Perseus · Tufts

Collections: Classics · Papyri · Renaissance · London · California · Upper Midwest · Chesapeake · Boyle · Tufts History Configure display · Help · Tools · Copyright · FAQ · Publications · Collaborations · Support Perseus

Results page: 1 2

4 from Perseus Tools and Information

1. Foca, Phocaea: Turkey [Atlas site] (16.79)

2. Phokaia: Turkey [Atlas site] (12.51)

3. Focal Point: Maryland, United States [Atlas site] (4.85)

   More

11 from Greek and Roman Materials

1. Phocaea [Reference article in Harry Thurston Peck, Harpers Dictionary of Classical Antiquities (1898)] (14.86)

2. PHOKAIA (Foca) Turkey. [Reference article in The Princeton Encyclopedia of Classical Sites (eds. Marian Holland McAllister, Richard Stillwell, William L. MacDonald)] (11.43)

3. PHOCAEA [Reference article in Dictionary of Greek and Roman Geography (1854) (ed. William Smith, LLD)] (11.18)

   More

1 from AIM25 - Archives in London

1. Bragg, Sir William Henry, 1862-1942. Knight. Physicist.; Bragg, Sir William Henry (1862-1942): Papers of Sir William Henry Bragg include: (Box1) pocket diaries 1924-1942 relating to day to day engagements. (Box2-Box11) Miscellaneous correspondence and notes c1898-1962, relate to various topics such as letters of praise over his lectures and addresses; his work on and observations of crystals and x-rays; his papers and books; honours and meetings. (Box26) Bragg-Rutherford correspondence 1904-1935, relates to letters and discussions between William Henry Bragg and Ernest Rutherford on his work; chairmanships; lectures and publications. (Box28) Father/Son correspondence and autobiography, relates to letters between William Henry Bragg and Lawrence Bragg discussing lectures; laboratory work; working together on research; also contains letters to other correspondents such as H Young and Kathleen Lonsdale; autobiographical notes. (Box37) A B Wood correspondence 1917-1962, relates to William Henry Bragg's work for the Admiralty and continual contact with A B Wood; also includes correspondence between Lawrence Bragg and others on biographical information 1962-1969. (Box12) Research notebooks c1900-1930 relate to his lectures, abstracts of literature and notes by Lawrence Bragg. (Box13) General files on scientific work relate to notes on sound and light; colours from plants; anthracene (under Lawrence Bragg); clay; crystals; paramagnetism and diamagnetism. (Box14-Box16) General files on crystallography relate to various aspects of his work on the subject such as, anthracene and naphthalene; proteins; liquid crystals; diamonds; calcium carbide as well as proofs on the Story of Electromagnetism; draft autobiography and biography; notes for a lecture on the solid state of matter and some correspondence on his research for the Admiralty in the First World War. (Box17) General files on research relate to studies in radioactivity; notes on topics such as focal conics, fluid crystals, nematic liquids and optics; correspondence on topics such as crystallised substances, x-rays, density values and publications. (Box18) Miscellaneous scientific notes and correspondence relate to discussions and drafts for the books Crystallography and X-Rays and Crystal Structure; discussions on other scientists' views for example Debye's 'relaxation time' argument. (Box19) Press cuttings and draft lectures relate to drafts for articles and papers as well as correspondence between Lawrence Bragg and Kathleen Lonsdale on the biography of William Henry Bragg. (Box20-Box24) Reprints 1891-1944 and synopses and reprints of lectures 1931-1942, relate to various publications by William Henry Bragg in journals such as Transactions Royal Society South Australia, Philosophical Magazine and Nature; also includes some articles about William Henry and Lawrence Bragg. (Box25) Medals 1887-1939. (Box27) Royal Institution administrative files 1923-1941, relate to correspondence regarding pupils, studentships, lectures, funding, laboratory work, bye-laws and the Bragg-Paul pulsator, an iron lung to aid artificial respiration (Robert W. Paul). (Box29) Lectures, manuscripts (MSS) and proofs 1938-1941; (Box30, Box32-Box34) lectures and articles 1920-1940; (Box31) lecture notes 1886-1888, relate to lectures, speeches and addresses given by William Henry Bragg at various locations for instance the Royal Society, the RI and those given in Adelaide, Australia, on subjects such as x-ray analysis, crystals, Count Rumford, acoustics and elementary physics; also includes proofs and drafts of articles for journals such as Nature. (Box35) Broadcast scripts 1928-1942, relate to scripts for radio broadcasts on topics such as Michael Faraday, crystals and x-rays. (Box36) Letters of condolence to Lawrence Bragg on the death of William Henry Bragg, Mar-Jun 1942. Notebooks 1904-1913, relate to topics such as radioactivity and x-ray crystallography. Newspaper cuttings (6 volumes) 1913-1940. [Text] [View with Perseus links] (0.06)

5 from BioMed Central

1. Wang, Chen, Yang, Tao, Noor, Raza, Shuaib, Ashfaq; Delayed minocycline but not delayed mild hypothermia protects against embolic stroke: (in English) AbstractBackgroundInflammatory reactions occurring in the brain after ischemia may contribute to secondary damage. In the present study, effects of minocycline, an anti-inflammatory agent, alone or in combination with mild hypothermia on focal embolic cerebral ischemia have been examined.MethodsFocal ischemic injury was induced by embolizing a preformed clot into the middle cerebral artery (MCA). Infarction volume was measured at 48 h after the injury. Mortality was also recorded.ResultsDelayed administration of minocycline alone or delayed minocycline plus delayed mild hypothermia reduced the infarction volume significantly. However, delayed mild hypothermia alone was not protective and delayed mild hypothermia in combination with minocycline did not show any additive effect.ConclusionsThese results suggest that minocycline is beneficial in focal ischemic brain injury, and the lack of the enhanced neuroprotection may be due to the brief exposure to hypothermia. [Text] [View with Perseus links] (0.79)

2. Fumihiko Nakamura; Biochemical, electron microscopic and immunohistological observations of cationic detergent-extracted cells: detection and improved preservation of microextensions and ultramicroextensions: (in English) AbstractBackgroundFilopodia, retraction fibers and microvilli, are fragile microextensions of the plasma membrane that are easily damaged by mechanical force during specimen preparation for microscopy. To preserve these structures for electron microscopy glutaraldehyde is generally used, but it often causes antigen masking. By contrast, formaldehyde is generally used for immunofluorescence light microscopy, but few studies have been concerned with the loss of microextensions.ResultsWe demonstrate in biochemical experiments that cultured cells needed to be kept in 4% formaldehyde for at least 60 min at room temperature or for 20 min at 37°C to irreversibly crosslink most of the polypeptides. Also, fragmentation of fragile microextensions was observed after Triton X-100 extraction depending on concentration and extent of crosslinking. We also report on a novel fixation procedure that includes the cationic detergent dodecyltrimethylammonium chloride (DOTMAC). Treatment of NIH3T3 cells with DOTMAC resulted in complete removal of membrane lipids and in good preservation of the cytoskeleton in microextensions as well as preservation of ultramicroextensions of <0.05μm in diameter that have not been observed previously unless glutaraldehyde was used. Stress fibers and microextensions of DOTMAC-extracted cells were readily stained with anti-β-actin antibodies, and antibodies to vinculin and moesin stained focal contacts and microextensions, respectively.ConclusionsSome microextensions were fragmented by the standard Triton X-100 permeabilization method. By contrast, DOTMAC completely extracted membrane lipids while maintaining the cytoskeleton of microextensions. Thus, DOTMAC treatment may provide a valuable new tool for the reliable visualization of previously undetectable or poorly detectable antigens while preserving the actin cytoskeleton of microextensions. [Text] [View with Perseus links] (0.25)

3. Riccardo Mazzocchio, Giovanni Scarfo, Aldo Mariottini, Vitaliano Muzii, Lucio Palma; Recruitment curve of the soleus H-reflex in chronic back pain and lumbosacral radiculopathy: (in English) AbstractBackgroundNeedle EMG may be negative in mild or predominantly sensory lumbosacral radiculopathies. In such cases, an increase in the latency of the soleus H-reflex is a useful diagnostic criterion for establishing sensory fiber compromise at the S1 root level. However, if clinical signs of radicular involvement are lacking, the latency of the H-reflex is normal. We therefore studied the recruitment curve of the soleus H-reflex to investigate whether a change in the electrical threshold for eliciting the H-reflex might be a more sensitive criterion for detecting subclinical S1 root dysfunction.MethodsClinical and electrophysiological findings from 26 patients with chronic back pain and radiculopathy were compared with data obtained from 40 healthy subjects.ResultsAn increase in the mean H-reflex threshold was the only abnormal electrophysiological finding in patients with no clinical sign of root injury (58%). A decrease in the mean H-reflex amplitude and a prolongation of H-reflex latency was observed in patients with radicular signs (42%). In both patients groups, F-wave and needle EMG studies were normal. No radiological evidence of S1 root compression was found.ConclusionsThe study of the recruitment curve of the soleus H-reflex may be usefully associated to F-wave and needle EMG studies to detect possible S1 root dysfunction in mild lumbosacral radiculopathies. An increase in H-threshold may be the earliest abnormality in the absence of focal neurological signs. [Text] [View with Perseus links] (0.24)

   More

2 from CCSD th&egrave;ses-EN-ligne

1. SCHLOSSER, Nicolas; Etude et realisation de micro-pieges dipolaires optiques pour atomes neutres: Les atomes neutres pieges sont des candidats potentiels pour l'implementation de portes logiques quantiques. Dans ce contexte, cette etude porte sur la realisation d'un piege dipolaire optique de si petite taille qu'il ne puisse contenir qu'un atome unique. Pour cela, il est necessaire de focaliser tres fortement un laser a l'endroit ou l'on desire capturer les atomes. L'experience s'articule donc autour d'un objectif de microscope de grande ouverture numerique, entierement concu et realise au laboratoire. Cette optique est utilisee pour faire focaliser un laser au centre d'un piege magneto-optique, reservoir d'atomes froids alimentant le piege dipolaire ainsi cree. Le dispositif d'observation des atomes pieges est base sur le meme objectif, qui collecte, avec une grande efficacite, la fluorescence des atomes pieges et en fait l'image sur une camera CCD ou une photodiode a avalanche. La resolution spatiale du dispositif utilisant la camera permet d'obtenir une image des atomes captures, alors que l'on utilise la rapidite de la photodiode a avalanche pour les etudes de la dynamique du piege avec une bonne resolution temporelle. Apres une description detaillee de ce dispositif experimental, nous montrons qu'il est possible de realiser des micro-pieges dipolaires optiques, de quelques microns cube et contenant une dizaine d'atomes. L'etude de la dynamique de chargement et de la duree de vie de ces pieges revele egalement la presence de processus de collisions a deux corps. Nous montrons ensuite qu'en diminuant le taux de chargement il est possible d'observer, en temps reel, un atome unique piege pendant quelques secondes. Dans ce regime, un processus de "blocage collisionnel" limite ce nombre d'atome a un. Pour finir, nous decrirons la mise en place d'un double piege dipolaire, dans lequel on peut pieger un atome unique dans chaque site. Ce dispositif ouvre la voie vers l'etude de l'interaction entre atomes pieges individuellement. ---------- Neutral atoms are possible candidates for the implementation of quantum gates. In this context, the subject of this study is the realization of optical dipole traps, small enough to contain only a single atom. In order to obtain the dipole trap, we need to focus strongly a laser beam at the point where we want to trap the atoms. The central part of the experiment is an home-built microscope objective, with a great numerical aperture. This system focus the light in the center of a Magneto-Optical Trap which is the source of cold atoms used to load our dipole trap. The imaging set-up is based on the the same objective. It collects the fluorescence light coming from trapped atoms with a great efficiency and images them either on a CCD camera or an avalanche photodiode. The spatial resolution of the system using the camera gives images of the atom cloud, and the avalanche photodiode allows us to study the dynamic of the trap with a good time resolution. After the description of the experimental set-up, we demonstrate the realization of microscopic optical dipole traps with a volume of a few cubic microns and containing a few atoms. The study of loading process and the lifetime reveals the presence of two body collisions. Then, with a reduced loading rate, we can see, in real time, single atoms arriving one by one in the trap. In this regime, a process of "collisionnal blockade" limits the atom number to one. Finally, we present a realization of a double dipole trap, in which we can trap two individual atoms in each site. [Text] [View with Perseus links] (0.29)

2. Revenu, Benoit; Anisotropies et polarisation du rayonnement fossile : methodes de detection et traitement de donnees: Le rayonnement fossile regorge d'une multitude d'informations physiques sur l'univers tel qu'il etait quelques centaines de milliers d'annees apres le Big-Bang. L'analyse de ses fluctuations de temperature et de polarisation permet de mesurer les parametres cosmologiques et de contraindre les theories de l'univers primordial. La polarisation permet en particulier de lever des degenerescences entre certains parametres cosmologiques en donnant un acces direct aux ondes gravitationnelles primordiales. La premiere partie de cette these est consacree au modele standard de la cosmologie. Je presente en particulier la polarisation du rayonnement fossile. Le signal polarise, dont l'intensite n'excede pas dans la plupart des scenarios 10 % des fluctuations de temperature, est attendu a quelques micro kelvins. Pour le mesurer, on utilise souvent des bolometres refroidis, couples a des polariseurs. Je montre qu'il existe des dispositions optimales des detecteurs dans le plan focal de l'instrument minimisant le volume de la boite d'erreurs et permettant d'avoir des erreurs decorrelees sur les parametres de Stokes, caracterisant la polarisation. La source majeure de bruit dans ces mesures provient des fluctuations du bain thermique dans lequel plongent les bolometres, de l'electronique de lecture, des instabilites de gain et de l'optique. Ces processus engendrent des derives basses frequences qui se traduisent par des niveaux de bruit relatifs entre detecteurs trop importants par rapport au signal recherche. J'applique aux donnees polarisees une methode simple permettant de soustraire ces derives basses frequences; elle utilise les redondances inherentes a la strategie de balayage du ciel par l'instrument. Les resultats montrent que ces derives peuvent etre soustraites jusqu'au niveau du bruit blanc. Enfin, je decris l'experience COSMOSOMAS et presente une analyse preliminaire. Elle fournira des cartes de l'emission polarisee de notre galaxie a des frequences de l'ordre de 10 GHz. ---------- The cosmic microwave background contains much information about the universe when it was young, a few hundred thousand years after the Big-Bang. The statistical analysis of its temperature and polarization fluctuations permits us to measure cosmological parameters and to constrain theories of the primordial universe. Moreover, polarization gives direct access to primordial gravity waves. The first part of this thesis presents the standard model of cosmology and, more specifically, the polarization of the cosmic microwave background. The polarized signal is not expected to be more than 10% of the temperature fluctuations and should be detected at a level of the order of a few micro-Kelvin. To achieve this sensitivity, we can use cooled bolometers coupled to polarizers. I show that there exist optimized configurations of the detectors in the focal plane of the instrument which lead to a minimal error box volume; these configurations also ensure that the errors on the Stokes parameters (used to quantify the polarization) are not correlated. The main sources of noise in these measurements come from thermal fluctuations, electronics, gain instabilities and optics. These processes lead to important low frequency drifts which significantly reduce the sensitivity of the experiment. I present a simple method which allows us to efficiently remove these drifts; this method uses the redundancies provided by the scanning strategy of the instrument. The results show that the low frequency noise can be removed down to the white noise level. The last part of this thesis is dedicated to a preliminary analysis of the COSMOSOMAS experiment. The goal of this experiment is to map the polarized emission of the galaxy and the cosmic microwave background fluctuations. [Text] [View with Perseus links] (0.28)

11 from CIMI Metadata Harvesting Working Group Demonstration Repository

1. George Browning; Diorama - Eureka Stockade: iers at the Eureka Stockade in Ballarat in 1854. Scene consists of many figurines representing both sides engaged in fighting. All soldiers are carrying rifles with bayonets attached. 6 soldiers are on horse back. Miners are using pistols, rifles and hand held weopons. Dead bodies on each side of fence line. A mud and canvas hut stands to the rear of the miner's section with a covered wagon between the hut and a corrugated tin structure. A blue and white Eureka flag stands as a main focal point of the miner's section. [Text] (1.93)

2. Fuji; Photograph - Woodturned Roof Accessory: white brick chimneys behind a wooden plank fence set against a blue sky with white fluffy clouds. Focal subject of photo appears to be a pointed/peaked woodturned object attached to the centre of the side of the roof. [Text] (1.50)

3. (in English) 1 A item. / Leather bellows attached to square plastic at each end trimmed with foam rubber. Bellows are very pliable and allow for flexibility in mis-alignment at short focal lengths, i.e., when they are most compressed. Could have been used with Arca, Plaubel or Swiss cameras. "Floppy bellows." [Text] (1.30)

   More

6 from CogPrints

1. Velmans, Max; Consciousness, Causality and Complementarity: Abstract of 1991 target article: Investigations of the function of consciousness in human information processing have focused mainly on two questions: (1) where does consciousness enter into the information processing sequence and (2) how does conscious processing differ from preconscious and unconscious processing. Input analysis is thought to be initially "preconscious," "pre-attentive," fast, involuntary, and automatic. This is followed by "conscious," "focal-attentive" analysis which is relatively slow, voluntary, and flexible. It is thought that simple, familiar stimuli can be identified preconsciously, but conscious processing is needed to identify complex, novel stimuli. Conscious processing has also been thought to be necessary for choice, learning and memory, and the organization of complex, novel responses, particularly those requiring planning, reflection, or creativity. The present target article reviews evidence that consciousness performs none of these functions. Consciousness nearly always results from focal-attentive processing (as a form of output) but does not itself enter into this or any other form of human information processing. This suggests that the term "conscious process" needs re-examination. Consciousness appears to be necessary in a variety of tasks because they require focal-attentive processing; if consciousness is absent, focal-attentive processing is absent. From a first-person perspective, however, conscious states are causally effective. First-person accounts are complementary to third-person accounts. Although they can be translated into third-person accounts, they cannot be reduced to them. [Text] [View with Perseus links] (2.02)

2. Humphrey, Nicholas K; Vision in a monkey without striate cortex: a case study: A rhesus monkey, Helen, from whom the striate cortex was almost totally removed, was studied intensively over a period of 8 years. During this time she regained an effective, though limited, degree of visually guided behaviour. The evidence suggests that while Helen suffered a permanent loss of 'focal vision' she retained (initially unexpressed) the capacity for 'ambient vision'. [Text] [View with Perseus links] (0.91)

3. Velmans, Max; Is Human Information Processing Conscious?: Investigations of the function of consciousness in human information processing have focused mainly on two questions: (1) where does consciousness enter into the information processing sequence and (2) how does conscious processing differ from preconscious and unconscious processing. Input analysis is thought to be initially "preconscious," "pre-attentive," fast, involuntary, and automatic. This is followed by "conscious," "focal-attentive" analysis which is relatively slow, voluntary, and flexible. It is thought that simple, familiar stimuli can be identified preconsciously, but conscious processing is needed to identify complex, novel stimuli. Conscious processing has also been thought to be necessary for choice, learning and memory, and the organization of complex, novel responses, particularly those requiring planning, reflection, or creativity. [Text] [View with Perseus links] (0.73)

   More

2 from DUETT - Dissertations and other Documents of the Gerhard-Mercator-University Duisburg

1. Schicketanz, Peter; Untersuchung von Technologien fur Farbfilter und Mikrolinsen zur monolithischen Integration in CMOS-Fotosensorarrays - Technological investigation of colour filters and microlenses for the monolithic integration in CMOS-photodetector arrays: Prof. Dr. rer.nat Gunter Zimmer, Prof. Dr. Wolfgang Karthe; (in German) In this thesis two methods for the manufacturing of optical elements for the monolithic integration in CMOS image sensors are described. Polymeric micro colour filters and refractive micro lenses are presented. The colour filters were made of polyimid thin films with the colours Cyan, Yellow and Magenta. 9 x 9 um^2 filters were deposited on previously planarised CMOS substrates. Optical constants are measured by spectroscopic ellipsometry. The optical constants were used to calculate the colour sensor responses which are in good agreement with the experimental values. Raytracing calculations are used to evaluate the improvement of the responsivity by the use of microlenses. It is shown that the architecture of the pixel layout have to be considered to adapt the lens parameters. For the fabrication of the lenses Polymethyl-Methacrylat (PMMA) was used as a hight transparent material. By the melting of PMMA structures the lenses were obtained. A microlens array was deposited on a glass plate to determine the focal length by the following procedure. By illuminating the microlens array with laser light the focused beam was analysed with a microscope objective. It is estimated that the improvement in responsivity could be as high as 30 % with such a PMMA microlens array. [Text] [View with Perseus links] (0.31)

2. Jost, Michael; Computersimulationen zur statistischen Skalenvarianz von Grenzflachen in heterogenen magnetischen Systemen: Prof. Dr. rer.nat. Klaus Usadel; (in German) In dieser Arbeit werden die morphologischen und dynamischen Eigenschaften von getriebenen Grenzflaechen in heterogenen magnetischen Systemen diskutiert. Der Schwerpunkt der Untersuchung liegt hierbei auf Computersimulationen von Spinnmodellen mit Zufallsfeldunordnung und der numerischen Behandlung von Bewegungsgleichungen, welche zur Beschreibung dieser Grenzflaechen in der Literatur diskutiert werden. n the present thesis the morphological and dynamical properties of driven interfaces in heterogenous magnetic systems are discussed. The focal points are computersimulations of spin systems with random-field disorder and the numerical treatment of equations of motion which are discussed in the literature for the description of interfaces [Text] [View with Perseus links] (0.11)

1 from Digital Library of the Commons

1. Walker, Peter A., Peters, Pauline E.; The Meanings of Boundaries: Contested Landscapes of Resource Use in Malawi: (in English) From the Authors' Paper: This paper examines the changing meanings of boundaries that demarcate community, private, and public land in Malawi and their roles in shaping resource use. Boundaries have long been a central concept in many social science disciplines, and recently considerable attention has been given to the ways that boundaries---whether physical or socio-cultural---are socially constructed and contested. In some cases landscapes are said to reflect multiple overlapping or multi-layered boundaries asserted by competing social groups. In other cases boundaries are said to be blurred, or even erased, through social contests and competing discourses. The authors of this paper, one a geographer, one an anthropologist, suggest that such choices in analytical language and metaphors tend to obscure certain key social dynamics in which boundaries play a central role. Specifically, the paper argues that in the two case studies presented from southern and central Malawi, social contests focus not on competing ('overlapping', or 'multi-layers') sets of spatially-defined boundaries but over the meanings of de jure boundaries that demarcate community, private, and state land. In asserting rights to use resources on private and state land, villagers do not seek to shift or eliminate the boundaries marking community and private or state land or to assert alternative sets of spatial boundaries. Instead, the key contests over boundaries in these case studies involve efforts to re-define the meanings of existing boundaries---that is, how boundaries define rights and obligations among communities, private landowners, and the state. Similarly, language and metaphors centered on the notion of 'blurring' of boundaries may be misleading---boundaries in these case studies are not blurred butremain relatively stable and widely observed. Instead, boundaries serve as a focal point for discursive strategies to rework the social relations defined by these boundaries. The paper suggests an analytical approach that focuses not on multi-layered spatial boundaries nor the blurring of boundaries but on how boundaries help shape discursive strategies in which local villagers propose and act on claims to particular places and resources on private and state land rather than proposing alternative boundaries as lines-on-the-map. Thus, boundaries play a key role in creating a contested landscape characterized not by linear divisions of space but by multiple discursive struggles over access and control of particular places and resources." [Text] [View with Perseus links] (0.70)

9 from Humboldt University of Berlin, GERMANY, Document Server

1. Fitzenreiter, Martin; Statue und Kult: (in German) The focus of the study is the non-royal ("private") tomb statue of the Old Kingdom (3rd to 6th dynasties). Observations on the actual position of statues within the tomb are included, followed by a discussion of architectural and functional components of a residential funerary complex. Further a certain number of two-dimensional representations and inscriptions are consulted for the discussion of special topics. The aim of the study is to investigate the function of a cultural object within the frame of social practice. By using the tomb statue as an example and by restricting the topic spatially to the residence and temporally to the Old Kingdom, it is possible to detect how - on the basis of habitual concepts and patterns of action - a cultural object has been developed and activated by a specific social group (inhabitants of the residence) in the frame of funerary practice in a specific historical situation (consolidation of the centre of an early state). Using a wider score of sources it is thus possible to sketch the reality of funerary practice of a specific period. This study is divided into five parts. The sources referred to in the different chapters are gathered in sets of tables. Part I sets the main principles of the study. The two most important statue types - the sitting and the striding figure - are introduced. The following discussion of its place in the funerary complex and its function shows the importance of the object "statue" within the funerary cult. Preliminary observations on social implications of funerary practice are formulated. It is shown that statues are marked by some indexical information (striding = possibility of movement; sitting = existence in the tomb; raised hand = possibility of receiving offerings) which will be activated in the course of funerary practice. By developing certain of these indices it became possible to describe individual positions and to introduce them into the cultural communication (inscription of name and titles, naturalistic elements of representation). The principles used in part I for the sources from dyn. 1 to 3 will also be observed in the following parts, dividing due to the amount of material the investigation into a number of subtopics (statue types, context of the funerary complex, function in the cult). In part II statue types added to the corpus of tomb statues during dyn. 4 are investigated. Focal point is the individual activation of the communicative potencies inherent in the statues (indices). It is shown that the development of new statue types (scribe, striding figure with protruding kilt, group figure, servant figure) can be correlated to the establishment of new social positions at the residence. Additionally the development of specific patterns of behaviour and of concepts of funerary practice leads to the creation of peculiar types of statues (reserve head, bust, naked figure, pseudo group). Part III deals with the archaeological context of statues. In order to investigate communities and differences within the funerary practice of the residence, sources of different social groups (elite vs. dependants) are treated separately. As in the period dealt with in part I, it is possible to observe the development and the transformation of the funerary practice in time. Additionally with rock-cut statues and related objects, a group of sources is investigated linking in a specific manner statue type and its position in the funerary complex. Main topic of this part is the activation of the medium "statue" in the course of collective cult action. In this context the different references of religious action in a funerary complex observable in the archaeological record are described. Part IV adds the evidence of inscriptions and two-dimensional depictions. The main focus is on two-dimensional representations showing the employment of statues. Using textual and pictorial evidence, reconstructions of the offering ritual, the festival ritual and the burial ritual are proposed. Funerary practice is described as a complex of actual behaviour. The circumstances of the activation of its individual and collective potencies are detected. The importance of the process of "conceptualisation" (oral / written formulation and explanation) of phenomenons for the development of funerary practice is stressed. Using sources showing the formation of patterns of representation of practical actions in picture and text (called "scriptualization") it is shown that funerary practice is a dynamic, constantly changing process. Those changes refer not only to the realm of actions - i.e. the actual ceremonies - but also to the objects used (statue, funerary monument, deceased body) and to the conceptualisation of the whole process in a "funerary religion". Part V summarises the main conclusions. Additionally it deals with the emic conceptualisation of the object "tomb statue". Further a number of criteria allowing a periodization of funerary practice at the residence are listed. Finally the overall importance of funerary practice within the frame of social practice in pharaonic Egypt during the 3rd millennium B.C.E. is highlighted. [Text] [View with Perseus links] (1.28)

2. Kruger, Hagen; Elektrophysiologische Untersuchungen zu Einflussen von ionotropen Glutamatantagonisten sowie 5-HT1A-Agonisten auf die Kaliumchlorid-induzierte "spreading depression" im neokortikalen Hirnschnittpraparat der adulten Ratte: (in German) Repetitive cortical spreading depression (SD) and SD-like events, associated with a massive de-polarization of neuronal and glial cells, is thought to play a key role in the induction of neuronal damage in the peri-infarct zone following experimental focal cerebral ischemia. In addition, ex-perimental and clinical data suggest that SD is the underlying mechanism of neurological distur-bances during migraine auras as well. However, detailed analyses on the consequences of repeti-tive SDs on cortical function and involved receptors are lacking. Using an in vitro rat model of SD I investigated in this thesis the electrophysiological properties of repetitive potassium chloride (KCl)-induced SDs, their influence on synaptic neurotransmis-sion and the effects of ionotropic glutamate antagonists and 5-HT1A agonists in neocortical slices obtained from adult rats. Whereas repetitive SDs revealed only non-significant variations in du-ration, amplitude and integral when elicited at intervals of 30 min, paired-pulse inhibition of ex-tracellularly recorded field potential responses was significantly affected by repetitive SD even under normoxic conditions. Compared to the control recordings, each SD episode caused a sig-nificant decrease in the efficacy of intracortical GABAergic inhibition by approximately 10%. Since excitatory synaptic transmission was unaffected, these data indicate that repetitive SDs cause a selective suppression of GABAergic function even in the non-ischemic brain. None of the compounds tested prevented the SD-induced cortical disinhibition. However, the SD-associated negative shift in the extracellular DC potential was reduced by ketamine, a selective N-methyl-D-aspartic acid (NMDA-) receptor antagonist. Ketamine significantly (p < 0.01) re-duced the amplitude of the first SD peak and blocked the second SD peak. Ketamine also de-creased the SD duration at half maximal amplitude (p < 0.05). NBQX, a selective a-amino-3- hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor antagonist did not affect the SD-accompanied cortical depolarization, whereas selective 5-hydroxytryptamine (5-HT)1A receptor agonists 8-OH-DPAT and BAY x 3702 shortened concentration-dependently the duration of the SD up to 50 %. Nevertheless, both 5-HT1A receptor agonists caused a strong disinhibition of neu-ronal function with a tendency towards paired-pulse facilitation as well. Thus, repetitive SD and SD-like events may induce neuronal hyperexcitability due to a selective suppression of intrinsic inhibitory GABAergic function. Under normoxic conditions, SD-induced disinhibition may be involved in the generation and maintenance of migraine or associated neurological disturbances. Under hypoxic-ischemic conditions, neuronal hyperexcitability may contribute to the gradual expansion of the ischemic core and the metabolic deterioration of the penumbral tissue after SD episodes. This underlines the deleterious effect of SD to the outcome of focal cerebral ischemia. Although the precise mecha-nisms of SD generation and propagation remains far from established, the present pharmacologi-cal profile of KCl-induced SD in vitro links the induction and propagation of SD in rat neocorti-cal slices mainly to a local increase of [K + ] e and a subsequent activation of NMDA- receptors. This corroborates the neuroprotective effect of a NMDA- receptor blockade observed in various in vitro and in vivo models. However, as it has been demonstrated in clinical trials, NMDA- re-ceptor antagonists in use today cause psychomimetic and cardiovascular side effects in humans and are therefore currently of low clinical benefit. The activation of 5-HT1A receptors by selective agonists represents a new pharmacological strategy in the treatment of acute ischemic stroke, since shortened SD waves may represent a less energy-consuming process under conditions of limited energy supply and are probably associated with an efflux of excitatory neurotransmitters to a lesser extent. The potential clinical benefit of 5-HT 1A receptor agonists remains to be investi-gated in clinical trials, since systemic administration of these compounds after the onset of acute focal cerebral ischemia might interfere with normal functions of glutamatergic neurotransmission in the intact, non-ischemic brain. [Text] [View with Perseus links] (1.00)

3. Thomale, Ulrich-Wilhelm N.; Evaluation des tierexperimentellen Modells einer traumatischen kortikalen Kontusion (Controlled Cortical Impact Injury) fur Therapiestudien: (in German) Objective: A new model of focal contusion (Controlled Cortical Impact Injury, CCII) should be evaluated to proof potential neuroprotective drug effects on posttraumatic alterations. Materials and Methods: In 86 Sprague Dawley rats a left temporo-parietal contusion was applied. 23 h following CCII rats were examined neurologically. In all animals brains were removed 24 hours after contusion. Posttraumatic hemispheric swelling and water content were determined gravimetrically. Using the triphenyltetrazoliumchloride (TTC) staining contusion volume was measured planimetrically. Extravasation of Evans blue was quantified sepctrophotometrically. For histological characterization hematoxylin/eosin staining, Bielschowsky staining and Evans blue fluorescence microscopy was used. In a representative study the potential neuroprotective effect of a 5-hydrxoytryptamine1A receptor agonist (Bay X 3702) on contusion volume and brain edema following CCII was determined. Results: Neurological examination showed deficits in motility and beam balance task, respectively. Posttraumatic hemispheric water content increased significantly after contusion (82.5 ± 0.12%) versus contralateral hemisphere (79.8 ± 0.08%). Posttraumatic swelling was 14.3 ± 1.2%. Spectrophotometrically, concentration of extravasated Evans Blue was 47.3 ± 11.8 ng/mg dry weight. Contusion volume was 58.9 ± 9.1 cmm. Histologically, a hemorrhagic necrosis was observed following CCII. Axonal injury was found in pericontusional area, only. Evans Blue was detected pericontsionally in the ipsilateral extra- and intracellular space. Bay X 3702 had no significant effect on posttraumatic hemispheric swelling and water content. In contrast to neuroprotective effect, shown following focal and global ischemia Bay X 3702 administration resulted in significant increase of contusion volume to 126 ± 21.8 cmm, versus placebo group (58.6 ± 7.5 cmm) following CCII. MABP showed significant decreased values after injection of Bay X 3702 up to 30 Minutes following trauma. A significant correlation could be shown between decrease of MABP and increase of contusion volume. Conclusion: The Controlled Cortical Impact Injury represents important aspects of human focal traumatic brain injury. The posttraumatic lesion is reproduceable and quantifiable. Although a neuroprotective effect of the 5-hydroxytryptamine1A agonist could not be verified, effects of potential neuroprotective agents can accurately be proved in this model. [Text] [View with Perseus links] (0.66)

   More

2 from Institut National de Physique Nucleaire et de Physique des Particules

1. ... ; Identification of intermediate energy heavy ions in the focal plane of a spectrometer [Text] (1.98)

2. Plankl-Chabib E.; Contribution a la construction et a la mise au point d'un systeme de detection pour le plan focal du spectrometre BBS. Application a l'etude de la decroissance par emission de neutrons d'etats resonants peuples par la reaction ($^4$He,$^3$He) a 42 MeV/u dans les noyaux $^{208}$Pb et $^{209}$Pb [Text] (1.04)

1 from LSU Electronic Thesis and Dissertation Archive

1. Haynes, Laura Sams; Christio-Conjure in Voodoo Dreams, Baby of the Family, The Salt Eaters, Sassafrass, Cypress & Indigo, and Mama Day: (in English) This project examines contemporary African American womens literature and the legacy established by literary foremother, Zora Neale Hurston. The discussion is positioned at the cross-section of three on-going conversations: 1) current discourses on Conjure in African American womens literature, 2) analyses of Africanisms in black culture, and 3) previous scholarship on recurring topics in African American womens writing. Here these frames are unified under one thematic: Christio-Conjurea rubric borne of the trans-Atlantic slave trade that designates the fusing of Christian and West African religious tradition in African American culture. Thus, this project establishes a new literary matrix for analyzing twentieth-century black womens writing. Each chapter features a novel viewed through the critical lens of Christio-Conjure. Zora Neale Hurstons and Luisah Teishs research offers a framework for the elements of Christio-Conjure integrated throughout the novels. Chapter two, Christio-Conjure as Historical Fiction, analyzes Jewel Parker Rhodess Voodoo Dreams: A Novel of Marie Laveau (1993), a work that provides a compelling image of the black woman as a Christio-Conjure priestess. Chapter three, Christio-Conjure and the Ghost Story, examines how Tina McElroy Ansas Baby of the Family (1988) incorporates the Christio-Conjure tenet of matrilineage with the cultural transmission of mother wit as African American folk wisdom. Chapter four, Revolutionary Christio-Conjure, addresses the revolutionary aspects of Toni Cade Bambaras The Salt Eaters (1980), highlighting African American communal transformation and afrofemcentric female bonding. Chapter five, Christio-Conjure Activism, examines Ntozake Shanges Sassafrass, Cypress & Indigo (1982) with the title characters as proverbial soul sistahs who employ Christio-Conjure in self-actualization and communal healing. Chapter six, Christio-Conjure Romance and Magic, discusses the love story of Cocoa and George against the backdrop of Gloria Naylors revision of the holy trinity in Mama Day (1989). As liberation tales, these novels depict characters that appropriate Christio-Conjure as a source of empowerment. In addition, the authors themselves employ Christio-Conjure in their writing as a reaffirmation of their cultural and literary heritage. As a focal point, then, Christio-Conjure functions as a centering mechanism in contemporary twentieth-century black womens writing, a body of literature historically marginalized. [Text] [View with Perseus links] (0.60)

8 from NCSTRL Historical Collection

1. Tversky, Oren J., Snibbe, Scott S., Zeleznik, Robert; Cone Trees in the UGA Graphics System: Suggestions for a More Robust Visualization Tool: The Xerox PARC cone tree is an efficient, practical tool for visualizing hierarchical information. It makes use of three-dimensional space to display more information than is possible in two dimensions. It employs animation and interactive selection to create a focal point on the structure. Shadows and perspective serve to enhance the effect. In this paper, we describe an implementation of cone trees under the UGA graphics architecture. The implementation is in the FLESH language -- an object-oriented graphics language that is the core of the UGA system. The FLESH language allows for rapid prototyping of three-dimensional widgets such as this. In addition to the rapid implementation, several extensions of the vanilla Xerox trees were implemented. A critique of the cone tree is offered, as well as suggestions for future direction of visualization of hierarchical data sets. [Text] (0.69)

2. Campbell, Neill, Muller, Henk, Randell, Cliff; Combining Positional Information with Visual Media: By integrating visual media with positioning information obtained with our wearable computer, we create new opportunities for using visuals both in the field and at the workstation. The position information we store with each visual is direction, pitch, roll, location, focal length, and zoom. This information allows any system to reconstruct the frustum of the visual, and, if height data is available to reconstruct which parts of the earth are visible in the visual. This enables position based lookup and 3D mosaicing of visuals to reconstruct a 3D model. [Text] (0.61)

3. Abbass, H.A., Macrossan, P., Towsey, M., Mengersen, K., Finn, G.D.; Knowledge Discovery in a Dairy Cattle Database (Mining for predictive models): Proper design of a breeding program has been an issue of primary concern in much animal breeding research during the last decade. Data Mining (DM) is a powerful paradigm for finding patterns that can be used to predict the productivity of progeny given information about their sire, dam and the environment. The more accurate the discovered patterns, the more genetic gain one can achieve in a breeding program. This paper describes a DM process on an Australian dairy database. The focal point of this paper is the selection of a point estimation model for predicting the daughter milk yield within an intelligent decision support system, currently being developed for the Australian dairy industry. The selection of the minimum number of attributes, sufficient for satisfactory prediction, and of an accurate mining algorithm form the overall objective of the paper. In addition, the advantages of Bayesian neural networks over conventional feed-forward neural networks are explored. [Text] [View with Perseus links] (0.56)

   More

5 from NSDL Test Collection

1. Focal Depth [Reference article in Glossary for USGS Earthquake Unit] (5.13)

2. focal plane scale [Reference article in LEVEL5 Astronomical Glossary] (4.72)

3. focal reducer [Reference article in LEVEL5 Astronomical Glossary] (3.37)

   More

7 from OCLC Online Computer Library Center Theses and Dissertations Repository

1. Pedersen, James Henry,--1942-; Focal point of conflict :--the United States and Greece, 1943-1947 /--James Henry Pedersen.: Thesis - University of Michigan., Bibliography: leaves 390-407. [Text] (1.59)

2. Baker, Dirk Edmond,--1945-; The focal-region fields of paraboloidal reflectors of arbitrary f/D ratio.: Thesis - Ohio State University., Includes bibliographical references. [Text] (1.17)

3. Hall, Gary Jon; An analysis of the role and function of communication in the 1959 prohibition repeal campaign in Oklahoma : focal point, Oklahoma County /--Gary Jon Hall.: Vita., Microfilm. Ann Arbor, Mich. : University Microfilms, 1972. -- 1 reel ; 35 mm., Thesis--Southern Illinois University., Bibliography: leaves 288-299. [Text] (1.10)

   More

1 from Objects under development

1. Weiss, Wolfgang; Exegese und Religionspadagogik: (in German) This lecture deals with the relationship between religious education and exegesis and especially with the function of biblical texts used for religious instruction in school. The didactic aspects of exegesis are discussed in connection with religious education. The focal point of this lecture is New Testament exegesis. [Text] (0.99)

1 from The University of Michigan. University Library. Digital Library Production Service.

1. Houng, S. J.; Surface currents induced by a plane wave on a parabolic cylinder with a focal length comparable to the incident wavelength / / by S.J. Houng and R.F. Goodrich.: Includes bibliographical references., Goodrich, R. F., University of Michigan. Radiation Laboratory. [Text] [View with Perseus links] (1.17)

3 from Virginia Tech Electronic Thesis and Dissertation Collection

1. McCullough, Julie Graham; perspective: design of Cascades visitors' center: Mario Cortes, Albert J. Davis, William Galloway; (in English) Consider the construction of a perspective drawing. The perspective is made by drawing lines between a point of origin and several focal points. A series of lines connect the focal points to one another. The culmination of lines drawn from origin to focal point and focal point to focal point describes a place. The perspective is a view, or window into this place. The relationship of these three elements - the origin, focal points, and view - is analogous to the development of a architectural project. The origin is a point of beginning. Each architect brings a set of experiences and ideas to the project. The project springs from the architects knowledge and ideals. The focal points involve the design development of a project. They relate to the areas of study and discovery for the project. Some foci are specific to a site or program. Some foci further investigate design intentions and how they relate to a given program. The links between foci create a place. Each drawing or description of this place is a view into the project. This thesis outlines the origins, focal points and views of a design for a visitors center located in southwestern Virginia. [Text] [View with Perseus links] (5.55)

2. Gallivan, Sean Thomas; Safety of Epidurally Administered Ketorolac in Dogs: Bradley Klein, Spencer A. Johnston, Richard V. Broadstone; (in English) The objective of this study was to evaluate the clinical, cerebrospinal fluid (CSF), and histopathologic effects of an epidurally administered NSAID (ketorolac) in dogs. This was performed as a blinded, placebo controlled study using twenty-two adult mixed breed dogs with 16 treatment and 6 control dogs. Dogs were anesthetized and epidural catheters were placed at the lumbosacral space. Catheter placement was evaluated fluoroscopically. Ketorolac (0.4 mg/kg) or placebo (5% ethanol) was administered epidurally over a 52 hour period, with 5 injections given at 12 hour intervals. At 1, 2, 4, or 8 hours after the first and last injection of ketorolac, dogs were anesthetized and CSF was obtained. Control dogs had CSF sampled 1 hour after the first and last ethanol injection. Neurologic function and pain response was evaluated before and during the study. Selected dogs were then euthanized and necropsies performed. None of the dogs exhibited any clinical or neurological abnormalities during the study. No statistical difference was noted in pain response or CSF analysis between treatment and control dogs. Gross necropsy revealed gastrointestinal ulceration of varying degrees in all treatment dogs. Histopathologic analysis of the spinal cord and meninges revealed minimal focal leptomeningeal phlebitis in 2 of 8 treatment dogs and minor subdural inflammation in one control dog. No changes to the neural structures were noted in any dogs. Epidural administration of ketorolac did not cause clinical signs, alteration in CSF values, or pathologic changes to the spinal cord when used for short duration. Gastrointestinal ulceration was common when ketorolac was administered epidurally at 0.4 mg/kg every 12 hours for 5 treatments. This study documented the safety of epidurally administered ketorolac in dogs before an efficacy trial can be performed. Gastrointestinal ulceration may limit use to short duration or single injection. [Text] [View with Perseus links] (0.58)

3. Im, Joann Hyohan; Chapel, Crematorium, and Columbaria: William Brown, Donna Dunay, Steve Thompson; (in English) Modern park-cemeteries have overcome the problems associated with cemeteries in past centuries. They usually are located away from population centers. They are designed for efficiency and are operated by professional caretakers. When loved ones are laid to rest there, we can be confident, as it is possible to be that their rest will not be disturbed by human beings. But for all we have gained in peace of mind, we have lost as much or more of the trappings that reminds us of our connections to our ancestors. Cemetery landscapes usually are banal. Neither their settings nor their designs evoke memories or renew our spirits. When we visit cemeteries, we visit another suburb, another mall, a place that "sells" us with promises of security and efficiency, a place that keeps its promises but nevertheless disappoints. Except for individual graves, there is no focal point either in the landscape or architecture of a park-cemetery to help us honor the dead or to rejoice in life. The Chapel Building is a focal point for a cemetery, the place where the dead and the living co-exist, however briefly. The ground floor of the Chapel houses the business of death. There is a place for preparation of bodies for burial, as well as a crematorium. The retaining walls cutting a section in the earth in an "L" shape is the columbaria. [Text] [View with Perseus links] (0.58)

6 from arXiv

1. ... ; The CAT Imaging Telescope: The VHE gamma-ray imaging telescope CAT started taking data in October 1996. Located at the Themis solar site in southern France, it features a 17.7 m^2 Davies-Cotton mirror equipped with 600 PMT camera at the focal plane. The mechanics and optics, the PMTs and the electronics are presented. The performance, based on the first 7 months of operation, is discribed., Comment: 4 pages, 2 figures, Tex, contribution to 25th ICRC Durban [Text] [View with Perseus links] (0.46)

2. Labeyrie, Antoine; Resolved imaging of extra-solar planets with future 10-100km optical interferometric arrays: In the recent years, interferometric arrays of optical telescopes have reached sizes of the order of 100m, but they have yet to produce high-resolution images. The analysis of image formation now shows that such images are obtainable directly in the recombined focal plane, if there are enough telescopes. Resolved images of extra-solar planets are in principle obtainable with 10km ground-based arrays., Comment: 4 pages, 5 figures. Paper available at http://www.obs-hp.fr/www/preprints/pp92/pp92.html [Text] [View with Perseus links] (0.44)

3. Dalcanton, Julianne J.; Systematic Biases in Galaxy Luminosity Functions: Both the detection of galaxies and the derivation of the luminosity function depend upon isophotal magnitudes, implicitly in the first case, and explicitly in the latter. However, unlike perfect point sources, the fraction of a galaxy's light contained within the limiting isophote is a function of redshift, due to the combined effects of the point spread function and cosmological dimming. This redshift variation in the measured isophotal luminosity can strongly affect the derived luminosity function. Using simulations which include the effects of seeing upon both disk and elliptical galaxies, we explore the size of the systematic biases which can result from ignoring the redshift variation in the fraction of detected light. We show that the biases lead to underestimates in the normalization of the luminosity function, as well as changes in shape. The size of the bias depends upon redshift, and thus can mimic galaxy evolution. Surprisingly, these biases can be extremely large without affecting <V/V_max>. However, these biases can be detected in the full distribution of V/V_max, and in fact may have already been detected in recent surveys. Because the systematic biases result from the redshift variation in the fraction of lost light, the biases are not significant when the fraction of lost light is always small over the entire survey volume, for all galaxy types; however, modern surveys usually violate these conditions. We show that the expected biases are not necessarily eliminated when using aperture magnitudes, FOCAS "total" magnitudes, or Kron magnitudes, but may be reduced if Petrosian magnitudes are used. These considerations may also apply to samples of clusters selected in X-rays., Comment: 31 pages, including 12 pages of figures. LaTex with aaspp4.sty. Accepted to the Astrophysical Journal [Text] [View with Perseus links] (0.44)

   More

Results page: 1 2

To search in individual texts, see instructions. texts to search

Perseus catalogue English text French text German text Greek text Italian text Latin text Any collection Perseus Tools and Information Perseus Project Research Preprints Greek and Roman Materials Holinshed's Chronicles Holinshed's Chronicles of England Holinshed's Chronicles of Scotland Holinshed's Chronicles of Ireland The Works of Christopher Marlowe Peachum's Garden of Eloquence Renaissance Materials Secondary Materials The Works of William Shakespeare Globe Shakespeare New Variorum Shakespeare The Tragedie of Anthonie, and Cleopatra The Tragedie of Coriolanus Archimedes: Sources for the History of Mechanics The Bolles Collection on the History of London American Memory: California American Memory: Upper Midwest American Memory: Chesapeake Bay Tufts University History Duke Databank of Documentary Papyri Works Beyond the Collections Beazley Archive Boyle Work Diaries NSDL Test Collection only exact matches alternate names include external sites [Go to help] Group results by single list document type collection matching field author/titledynamic clustering [What's this?]