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Searched all Perseus collections for "Troy" 397 results in 21 collections
Included alternate terms: Cammania Cestria Cestrine Filiates Ilion Ilium Troia Troja
Top results (items)
Perseus Tools and Information (120)
Greek and Roman Materials (115)
The Bolles Collection on the History of London (2)
American Memory: California (1)
American Memory: Upper Midwest (3)
American Memory: Chesapeake Bay (1)
AIM25 - Archives in London (1)
Beazley Archive (12)
CIMI Metadata Harvesting Working Group Demonstration... (8)
Hong Kong University Theses Online (1)
Institut National de Physique Nucleaire et... (4)
LSU Electronic Thesis and Dissertation Archive (2)
Library of Congress Open Archive Initiative... (65)
NCSTRL Historical Collection (1)
OCLC Online Computer Library Center Theses... (22)
The Eberhard Karls University of Tuebingen (2)
The University of Michigan. University Library.... (16)
University of Illinois Library (4)
University of Minnesota IMAGES (1)
Virginia Tech Electronic Thesis and Dissertation... (12)
arXiv (4)

Results page: 1 2 3

120 from Perseus Tools and Information

  1. Troy, Troy, Bradford County, Pennsylvania: Pennsylvania, United States [Atlas site] (34.51)

  2. Troy, Troy, Louisiana: Louisiana, United States [Atlas site] (34.51)

  3. Cestrine [Atlas site] (29.58)

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115 from Greek and Roman Materials

  1. Cestrine [Reference article in Harry Thurston Peck, Harpers Dictionary of Classical Antiquities (1898)] (26.45)

  2. Cestrine [Reference article in Perseus Encyclopedia] (25.01)

  3. CESTRINE [Reference article in Dictionary of Greek and Roman Geography (1854) (ed. William Smith, LLD)] (24.89)

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2 from The Bolles Collection on the History of London

  1. Troy Town: United Kingdom [London site] (12.00)

  2. TROY, JOHN THOMAS (1739-1823) [Reference article in Sidney Lee, Dictionary of National Biography: Index and Epitome] (8.98)

1 from American Memory: California

  1. A forty-niner speaks; a chronological record of a New Yorker and his adventures in various mining localities in California, his return trip across Nicaragua, including several descriptions of the changes in San Francisco and other mining centers from March 1849 to January 1851. With illustrations by the author Hiram Dwight Pierce: (in English) Hiram Dwight Pierce (b. 1810) was a successful blacksmith in Troy, New York, when news arrived of gold discoveries in California. Leaving his wife and seven children behind, Pierce set out in March 1849, crossing the Isthmus to reach San Francisco. A forty-niner speaks (1930) prints the contents of notebooks kept by Pierce from the day he left Troy until his return in January 1851. He describes his journey west and work in the gold fields near Sacramento, the Stanislas mines, and the Merced River at Washington Flat, until his return home via Panama. Pierce offers an excellent account of the details of a prospector's life and the organization of miners' camps as business companies and local government units. [Text] (32.64)

3 from American Memory: Upper Midwest

  1. TROY, [Section in Fifty years in the Northwest] (8.58)

  2. TROY. [Section in Michigan state gazetteer and business directory for 1863/1864, embracing historical and descriptive sketches of all the cities, towns and villages throughout the state] (8.12)

  3. Racine.--Its Early History.--Subsequent Growth.--Racine District.--Rev. Dr. Hobart.--Kenosha.--Rev. Salmon Stebbins.--Sylvania.--The Kelloggs.--Walworth Circuit.--Burlington and Rochester.--Lyons. Troy Circuit.--First Class at Troy.--Eagle.--Round Prairie.--Hart Prairie.--Delavan.--Elkhorn.--Pastorate at Racine.--Revival.--Church Enlargement.--Second Year.--Precious Memories. [Section in Thirty years in the itinerancy] (4.13)

1 from American Memory: Chesapeake Bay

  1. William H. Young; Journal of an excursion, from Troy, N.Y., to Gen. Carr' head quarters at Wilson' landing: (in English) [Text] (16.32)

1 from AIM25 - Archives in London

  1. Unknown; Colonne Translation (German): Manuscript volume, 15th century, containing a German translation of Guido Delle Colonne, 'Historia Troiana and Alexander Der Grosse' (history of Troy and Alexander the Great, ff 1r-97v and 98r-154v respectively). The binding bears on the back: Romances. M.S. <BR><BR>The binding includes strips of parchment from manuscripts of the 13th century and 1320. [Text] [View with Perseus links] (2.44)

12 from Beazley Archive

  1. CUP A; ANDOKIDES; ATHENA, HERMES, WARRIOR AND CHILD, GORGONEION, HERMES LEADING AINEIAS AND ASKANIOS FROM TROY, PAST THE PALLADION (?) [Beazley Archive Vase] (8.58)

  2. Berlin, Museum fur Vor- und Fruhgeschichte, 3830: LEKANIS FRAGMENT; SWAN GROUP; ANIMAL FRIEZE, SWANS [Beazley Archive Vase] (7.89)

  3. -, Unknown: CUP; EPIKTETOS; HERAKLES FIGHTING (AT TROY ?), WARRIORS, SHIELD DEVICES, LION, WHEEL, MAENAD WITH PANTHER AND THYRSOS, RETURN OF HEPHAISTOS [Beazley Archive Vase] (7.89)

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8 from CIMI Metadata Harvesting Working Group Demonstration Repository

  1. (in English) Gold-weighing, brass beam, troy loz, 6 penny weights, 6 grains, 14 weights in wood box [Text] (7.26)

  2. Rehearsing at Troy: Neil FINN (Singer/Songwriter), Paul HESTER (Drummer); Mounted black and white photograph of Crowded House band members rehearsing. Left to right: Neil Finn on guitar and Paul Hester on drums. [Text] (4.15)

  3. (in English) White rock fragment. [Text] (3.71)

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1 from Hong Kong University Theses Online

  1. Sing, Troy William; The physiology of pain : analgesic mechanisms of acupuncture and laser treatment [Text] [View with Perseus links] (4.52)

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

  1. ... , De Troy J. ... ; Robustness test of a system of MSGC + GEM detectors at the Cyclotron facility of the Paul Scherrer Institute [Text] (4.78)

  2. ... , De Troy J. ... ; Large scale test of wedge shaped micro strip gas counters [Text] (4.04)

  3. ... , De Troia G. ... ; A measurement of $\Omega$ from the north american test Flight of BOOMERANG [Text] (1.75)

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2 from LSU Electronic Thesis and Dissertation Archive

  1. Fassbender, Troy Dwayne; Free Will and Responsibility: Indeterminism and Its Problems: (in English) This work is devoted to criticisms of libertarian philosophers who attempt to provide an account of agent freedom that relies solely upon indeterminism. First, the philosophy of Robert Kane is examined. I argue that Kanes account does not succeed as an intelligible libertarian account of freedom and at best makes compatibilist accounts more intuitive. I next examine objections to indeterminist accounts as lodged by Galen Strawson, Thomas Nagel, Daniel Dennett, and Richard Double before turning to an analysis of a debate among Peter van Inwagen, John Martin Fischer and Mark Ravizza. Van Inwagen argues that we are seldom able to do other than we do but as long as we are in some way responsible for this inability then this does not entail that we can only rarely be held responsible. Typical cases are those in which an agents character determines a particular action and the agent is responsible for having the character she has. Fischer and Ravizza argue that van Inwagens account is empty because the character of an agent is formed at an early age by forces beyond her control. I conclude by arguing, pace Kane and van Inwagen, that even if an action is determined by an agents character and the agent is responsible for having that character, we still may not be able to hold the agent responsible in a significant amount of cases. Additionally, I attempt to provide a compatibilist solution to the problem of free will in an attempt to show that the ability to do otherwise is not relevant to the problem of free will. [Text] [View with Perseus links] (0.89)

  2. Mouton, Troy Michael; Organizational Culture's Contributions to Security Failures Within the United States Intelligence Community: (in English) The institutions that comprise the United States intelligence community have organizational cultures that are unique from other government agencies. These cultures encourage the development and retention of traits that are necessary to mission accomplishment, yet these exclusivities also hamstring organizations and may contribute to significant security failures. This thesis isolates elements of organizational culture that are specific to the United States intelligence community and explores the extent to which the culture is responsible for security and/or counterintelligence shortcomings. The author selected three governmental organizations with intelligence collection and analysis functions; they include the Naval Investigative Service (NIS), Central Intelligence Agency (CIA) and Federal Bureau of Investigation (FBI). These agencies demonstrate the intelligence community includes military (NIS), intelligence (CIA) and law enforcement (FBI) components with shared organizational traits. The author subsequently identified a significant security failure case encountered by each agency and employed a case study approach to determine the extent to which the agencies organizational cultures contributed to the security failures. Internal agency investigations and external assessments of espionage activities reveal cultural factors impede the early detection of security compromises and thwart law enforcement efforts to investigate suspicious behavior. Despite the deleterious effects of national security collapses, the intelligence communitys personnel increasingly recognize the complicity of organizational culture in such security failures. The intelligence community increasingly analyzes the negative aspects of its organizational traits, and there have been substantive strides within the intelligence establishment to minimize the security obstacles that organizational culture imposes on its constituent adherents. The intelligence apparatus must maintain an organizational culture that distinguishes it from other government agencies. Unfortunately, the communitys cultural characteristics also convey increased risks of security compromises. It is possible, however, for the United States intelligence community to maintain its unique organizational culture and simultaneously minimize the possibility of operational or security failure. [Text] [View with Perseus links] (0.44)

65 from Library of Congress Open Archive Initiative Repository 1

  1. Troy female seminary.; Troy female seminary. Mr. & Mrs. John H. Willard, principals. [Circular of the school.] Troy, Rensselaer County. N. Y. [n. d.].: (in English) Page Order: Leaflet, Printed Ephemera Collection; Portfolio 134, Folder 64. [Text] [View with Perseus links] (12.56)

  2. Ladies Association, Troy. N. Y.; Constitution of the Ladies Association of the City of Troy, for the assistance of students who intend to take orders in the Episcopal church. [Troy] November 1817.: (in English) Imprint 2., Printed Ephemera Collection; Portfolio 115, Folder 7. [Text] [View with Perseus links] (12.56)

  3. To arms! To arms!! [blank] For Herkimer to be taken!!! A steam packet will be at the Ilion dock at 1-2 past six this Friday evening, to carry citizens to Fort Herkimer, to attend a war meeting. By order of Committee. Ilion. N. Y. Loyal Citizens steam job press. [1864?].: (in English) Printed Ephemera Collection; Portfolio 125, Folder 32. [Text] [View with Perseus links] (12.35)

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1 from NCSTRL Historical Collection

  1. Antoniotti, M., Mishra, B.; Automatic Synthesis Algorithms for Supervisory Controllers (Preliminary Report): In this paper we describe our experience with a prototype system capable of synthesizing "Supervisor Controller Programs" based largely on the theory of discrete event systems (DES) first proposed by Ramadge and Wonham. We augment the theory by also allowing continuous time trajectories modeling transitions between events. We illustrate our approach by an example, - the discrete control of a walking machine - which poses some challenges on the applicability of the theory and finally, discuss some possible solutions. <P> Notes: Appeared in IEEE Proceedings of the Fourth International Conference on Computer Integrated Manufacturing and Automation Technology, Troy, NY, Oct. 1994 [Text] (1.52)

22 from OCLC Online Computer Library Center Theses and Dissertations Repository

  1. Ellis, William Carleton,--1902-; A study of the factors affecting the electrode potentials in the deposition of nickel /--by William Carleton Ellis.: Bound with Hunter, M.A. Thermo-electric force of some alloys. Troy, 1918. Hunter, M.A. Some electrical properties of titanium alloys. Troy, 1920. Blomquist, E.A. An investigation of the physical properties of some nickel-iron alloys. Troy, 1926. Irving, H.A. An investigation of the thermo-electric properties of some alloys of nickel. Troy, 1926. Ellis, W. C. A study of the physical properties of electrolytic cobalt. Troy, 1927. Ffolliott, C.F. An optical method of determining internal stresses in homogeneous materials. Troy, 1927. Bryson, T.A. The strength of flat plates. Troy, 1928. Robb, W. L. The fair price to pay for electrical energy. Troy, 1928. Sager, G.F. A study of the production of chromium surfaces. Troy, 1927., Thesis (M. S.)--Rensselaer Polytechnic Institute, 1925., Bibliography: p. 32-34. [Text] (29.07)

  2. Walkowitz, Daniel J.; Working-class culture in the gilded age :--the iron workers of Troy, New York, and the cotton workers of Cohoes, New York, 1855-1884 /--by Daniel J. Walkowitz.: Thesis--University of Rochester., Bibliography: leaves 281-298., Microfilm.--Ann Arbor, Mich. :--Xerox University Microfilms,--1974.--1 reel ; 35 mm.--s1974 nyun a [Text] (8.67)

  3. Womack, Troy A.; An analytical model for program analysis of a liberal arts college /--by Troy A. Womack.: Vita., Microfilm of typescript. Ann Arbor, Mich. : Xerox University Microfilms, 1970. -- 1 reel ; 35 mm., "70-4501", Thesis--University of Houston., Includes bibliography. [Text] (7.43)

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2 from The Eberhard Karls University of Tuebingen

  1. ... ; ... , Troia ... , Troia VI ... : Troia-Symposium, Podiumsdiskussion: Die Bedeutung Troias in der spaten Bronzezeit, Diskussionsleiter Prof. Dr. phil. Georg Wieland, Tubingen; Handelsfragen; Prof. Dr. Muller-Karpe, Andreas, Marburg; Prof. Dr. Kolb, Frank, Tubingen; Intervention: Prof. Dr. Lehmann, Gustav Adolf, Gottingen; Prof. Dr. Pfalzner, Peter, Tubingen; Prof. Dr. Kolb, Frank, Tubingen; Prof. Dr. Wilhelm, Gernot, Wurzburg; Prof. Dr. Kolb, Frank, Tubingen; Prof. Dr. Hauptmann, Harald, Heidelberg; Prof. Dr. Korfmann, Manfred, Tubingen; Intervention: Prof. Dr. Dr. Urpmann, Hans-Peter, Tubingen; Prof. Dr. Kolb, Frank, Tubingen; Prof. Dr. Hertel, Dieter, Munchen; Prof. Dr. Dr. h.c. Hansel, Bernhard; Prof. Dr. Niemeier, Wolfdietrich, Athen; Diskussionsleiter Prof. Dr. phil. Georg Wieland, Tubingen; Methodenfragen; Prof. Dr. Gehrke, Hans-Joachim, Freiburg; Dr. Easton, Donald, London; Prof. Dr. Antoni, Klaus, Tubingen; Prof. Dr. Brandt, Hartwin, Chemnitz; Prof. Dr. Korfmann, Manfred, Tubingen; Prof. Dr. Niemeier, Wolfdietrich, Athen; Prof. Dr. Starke, Frank, Tubingen; Prof. Dr. Latacz, Joachim, Basel; Diskussionsleiter Prof. Dr. phil. Georg Wieland, Tubingen; Homer, Mykene; Prof. Dr. Gauer, Werner, Tubingen; Prof. Dr. Niemeier, Wolfdietrich, Athen; Prof. Dr. Hiller, Stefan, Salzburg; Prof. Dr. Dr. h.c. Kullmann, Wolfgang, Freiburg; Prof. Dr. Cobet, Justus, Essen; Prof. Dr. Latacz, Joachim, Basel; Dr. Schuler, Christof, Tubingen; Prof. Dr. Latacz, Joachim, Basel; Prof. Dr. Korfmann, Manfred, Tubingen; Intervention: Prof. Dr. Niemeier, Wolfdietrich, Athen; Intervention: Prof. Dr. Hertel, Dieter, Munchen; Diskussionsleiter Prof. Dr. phil. Georg Wieland, Tubingen; Stellungnahme: Prof. Dr. Kolb, Frank, Manfred, Tubingen; Stellungnahme: Prof. Dr. Korfmann, Manfred, Tubingen [Image] [View with Perseus links] (2.40)

  2. ... ; ... , Troia ... , Troia VI ... : Troia-Symposium, Abschlussdiskussion: Die Bedeutung Troias in der spaten Bronzezeit, Begrussung durch Prof. Dr. Dr. h.c. Eberhard Schaich; Prof. Dr. phil. Georg Wieland, Diskussionsleitung; Stellungnahmen der Symposionteilnehmer; Prof. Dr. Korfmann, Manfred; Dr. Jablonka, Peter; Prof. Dr. Hauptmann, Harald; Prof. Dr. Dr. h.c. Hansel, Bernhard; Prof. Dr. Dr. Urpmann, Hans-Peter; Prof. Dr. Hertel, Dieter; Prof. Dr. Niemeier, Wolfdietrich; Prof. Dr. Starke, Frank; Dr. Heinhold-Krahmer, Susanne; Prof. Dr. Lehmann, Gustav Adolf; Prof. Dr. Kolb, Frank; Prof. Dr. Latacz, Joachim; Prof. Dr. Dr. h.c. Kullmann, Wolfgang [Image] [View with Perseus links] (0.88)

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

  1. Vinton, Rev. Frederic; The Disentombment of Troy, The Princeton review. [Text] [View with Perseus links] (8.58)

  2. Salisbury, Stephen, 1835-1905.; Troy and Homer. Remarks on the discoveries of Dr. Heinrich Schliemann in the Troad ... / by Stephen Salisbury.: "Part of the report of the Council of the American antiquarian society, presented April 21, 1875.", buhr, Schliemann, Heinrich, 1822-1890., American Antiquarian Society. [Text] [View with Perseus links] (8.31)

  3. Rensselaer Polytechnic Institute.; Proceedings of the semi-centennial celebration of the Rensselaer polytechnic institute, Troy, N.Y., held June 14-18, 1874,: buhr, Nason, Henry B. (Henry Bradford), 1831-1895. ed. [Text] [View with Perseus links] (7.85)

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4 from University of Illinois Library

  1. Kelly, J.; That black man from Troy [Text] (8.35)

  2. Troy, D.; Ain't That Cute [Text] (8.12)

  3. Will County, Illinois: United States. Commodity Stabilization Service., Hycon Aerial Surveys, Inc.; [Text] [View with Perseus links] (2.66)

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1 from University of Minnesota IMAGES

  1. Troy sales and service office, "Burroughs Corporation has announced the construction of a $250,000 branch Sales and Service office in Troy, Michigan. Looking over plans for the new facility are (from left), C. "Mac" Lorah, Burroughs Properties Representative : Frank Celentano, Business Machines Group Branch Manager : and R. T. Kennedy, Business Forms and Supplies Group Branch Manager. Completion of the building is slated for June 1971.": This object is held by: Charles Babbage Institute, University of Minnesota, Minneapolis, long shot, horizontal composition., Three men holding a large page and standing on the turned up soil in front of a partially completed single story brick building. [Text] (6.74)

12 from Virginia Tech Electronic Thesis and Dissertation Collection

  1. Stimson, Erin Leigh; Detection of Feline Leukemia Virus in Feline Bone Marrow Using Polymerase Chain Reaction: Thomas E. Toth, Gregory C. Troy, S. Dru Forrester; (in English) Detection of Feline Leukemia Virus in Bone Marrow Using Polymerase Chain Reaction <p> Erin Leigh Stimson <p> Latent feline leukemia virus (FeLV) infections, in which proviral DNA is integrated into host DNA, but not actively transcribed, are suspected to be associated with many diseases. Bone marrow is the suspected site of the majority of latent infections. The purpose of this study was to determine if polymerase chain reaction (PCR) could detect FeLV proviral DNA in bone marrow and provide a method of detecting latent infections. Blood and bone marrow samples from fifty cats and bone marrow from one fetus were collected; sixteen had FeLV-associated diseases. Serum ELISA, blood and bone marrow immunofluorescent antibody test (IFA), and blood and bone marrow PCR were performed on each cat, and IFA and PCR on bone marrow of the fetus. Forty-one cats were FeLV negative. Five cats and one fetus were persistently infected with FeLV. Four cats were discordant; two ELISA positive with other tests negative, one bone marrow IFA negative with other tests positive, and one bone marrow IFA positive with other tests negative. No cats were positive on bone marrow PCR only. These results indicate that PCR can detect FeLV in bone marrow, but no cats in this study harbored FeLV only in the bone marrow. Not all cats with FeLV-associated diseases are persistently or latently infected with FeLV. [Text] [View with Perseus links] (1.70)

  2. Herring, Ian Phillip; Feline Leukemia Virus Detection in Corneal Tissues of Cats by Polymerase Chain Reaction and Immunohistochemistry: Erin S. Champagne, J. Phillip Pickett, Thomas Toth, Gregory C. Troy; (in English) Corneal transplantation carries a high rate of success in the domestic cat and is an indicated treatment for specific corneal diseases in this species. The potential for iatrogenic transmission of viral diseases is a well-recognized problem in human corneal transplantation programs and screening donors for certain diseases is routine. Feline leukemia virus (FeLV) is a common agent of disease in domestic cats and available blood tests are highly effective in identification of infected individuals. This study investigates the presence of FeLV within corneal tissues of FeLV infected cats.<p> Seventeen cats were identified to be positive for serum p27 antigen by enzyme-linked immunosorbent assay (ELISA). Twelve of these individuals were found to be positive on peripheral blood by immunofluorescent antibody (IFA) testing. Seventeen ELISA negative cats were identified to serve as negative controls. Full thickness corneal specimens were collected from all subjects and analyzed for the presence of FeLV proviral DNA and gp70 antigen by polymerase chain reaction (PCR) and immunohistochemical (IHC) testing, respectively. <p> Eleven (64.7%) positive corneal PCR results were obtained from 17 ELISA positive cats. Of 12 cats which were both ELISA and IFA positive on peripheral blood, 10 (83.3%) had positive corneal PCR results. All corneal tissues from ELISA negative subjects were PCR negative. IHC staining of corneal sections revealed the presence of FeLV gp70 in corneal tissues of nine (52.9%) ELISA positive cats. Of the 12 cats which were both ELISA and IFA positive on peripheral blood, 8 (66.7%) had positive corneal IHC results. Positive IHC staining was localized to the corneal epithelium. Corneal tissues of all ELISA negative cats and all IFA negative cats were negative on IHC testing. <p> This study reveals FeLV to be present within the corneal epithelium of some FeLV infected cats. Screening potential corneal donors for this virus is warranted. <p> This work was funded by grants from the American College of Veterinary Ophthalmologists, the Virginia Veterinary Medical Association Pet Memorial Fund, and the DSACS Quick Response Fund. [Text] [View with Perseus links] (1.36)

  3. Culver, Britt Wayne; Technique for Repeatable Hyperosmotic Blood-Brain Barrier Disruption in the Dog: Karen Inzana, Gregory Troy, Jeryl Jones, bernard Jortner; (in English) Reversible hyperosmotic blood-brain barrier disruption (BBBD) has been used in pharmaceutical research as well as human medicine to enhance drug delivery across the blood-brain barrier. However a technique for repeatable BBBD in the canine has not been described. This study describes a repeatable technique for BBBD in the dog and evaluates the clinical and morphological effects of BBBD. Using fluoroscopic guidance, an arterial catheter was directed into the internal carotid artery via the femoral artery in ten dogs. BBBD was achieved in 5 dogs using 25% mannitol while 5 control dogs received only saline. Following recovery, dogs were monitored for clinical signs before a second, non-survival procedure was performed 2-3 weeks later. BBBD was estimated using CT densitometry as well as Evans blue staining on post-mortem exam. Histopathological evaluation of the brain was performed on all dogs. Seven dogs completed the study. Two treatment dogs were lost after the first infusion with deteriorating neurologic function attributed to CNS edema and increased intracranial pressure. One control dog was lost due to vessel wall damage during catheterization. The remaining dogs exhibited only transient neurologic, ocular, and vasculature injury. Successful BBBD was demonstrated in all treatment dogs as evidenced by CT and Evans blue staining. Histopathological evaluation revealed multifocal areas of infarction in all dogs indicating refinement of the technique is needed. This study shows that repeatable disruption the BBB in the dog is possible and opens the way for further investigations of BBBD using the dog as a model. [Text] [View with Perseus links] (0.97)

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4 from arXiv

  1. Karas, V., Dovciak, M.; Region of magnetic dominance near a rotating black hole: This is a brief contribution in which a simplified criterion of the relevance of the test-particle approximation describing motion of material near a magnetized black hole is discussed. Application to processes of the dissipative collimation of astronomical jets (as proposed by de Felice and Curir, 1992) is mentioned., Comment: 11 pages, to appear in General Relativity and Gravitation, also available (with additional illustrations) at http://otokar.troja.mff.cuni.cz/user/karas/au_www/karas/papers.htm [Text] [View with Perseus links] (2.12)

  2. Ashtekar, Abhay, Schilling, Troy A.; Geometrical Formulation of Quantum Mechanics: States of a quantum mechanical system are represented by rays in a complex Hilbert space. The space of rays has, naturally, the structure of a K\"ahler manifold. This leads to a geometrical formulation of the postulates of quantum mechanics which, although equivalent to the standard algebraic formulation, has a very different appearance. In particular, states are now represented by points of a symplectic manifold (which happens to have, in addition, a compatible Riemannian metric), observables are represented by certain real-valued functions on this space and the Schr\"odinger evolution is captured by the symplectic flow generated by a Hamiltonian function. There is thus a remarkable similarity with the standard symplectic formulation of classical mechanics. Features---such as uncertainties and state vector reductions---which are specific to quantum mechanics can also be formulated geometrically but now refer to the Riemannian metric---a structure which is absent in classical mechanics. The geometrical formulation sheds considerable light on a number of issues such as the second quantization procedure, the role of coherent states in semi-classical considerations and the WKB approximation. More importantly, it suggests generalizations of quantum mechanics. The simplest among these are equivalent to the dynamical generalizations that have appeared in the literature. The geometrical reformulation provides a unified framework to discuss these and to correct a misconception. Finally, it also suggests directions in which more radical generalizations may be found., Comment: 41 pages, ReVTeX [Text] [View with Perseus links] (1.80)

  3. Vokrouhlicky, D., Karas, V.; Stellar capture by an accretion disc: Long-term evolution of a stellar orbit captured by a massive galactic center via successive interactions with an accretion disc has been examined. An analytical solution describing evolution of the stellar orbital parameters during the initial stage of the capture was found. Our results are applicable to thin Keplerian discs with an arbitrary radial distribution of density and rather general prescription for the star-disc interaction. Temporal evolution is given in the form of quadrature which can be carried out numerically., Comment: Letter to MNRAS, 5 pages and 3 figures; also available at http://otokar.troja.mff.cuni.cz/user/karas/au_www/karas/papers.htm [Text] [View with Perseus links] (1.18)

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