Search Results - (Author, Cooperation:R. Roberts)
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1Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-03-06Publisher: Oxford University PressPrint ISSN: 0305-1048Electronic ISSN: 1362-4962Topics: BiologyPublished by: -
2Latest Papers from Table of Contents or Articles in PressEnis Kostallari, Petra Hirsova, Alena Prasnicka, Vikas K. Verma, Usman Yaqoob, Nicha Wongjarupong, Lewis R. Roberts, Vijay H. Shah
Wiley-Blackwell
Published 2018Staff ViewPublication Date: 2018-01-24Publisher: Wiley-BlackwellPrint ISSN: 0270-9139Electronic ISSN: 1527-3350Topics: MedicinePublished by: -
3Latest Papers from Table of Contents or Articles in PressE. Callaway ; T. Sutikna ; R. Roberts ; W. Saptomo ; P. Brown ; H. Gee ; L. Dayton ; B. Jungers ; M. Henneberg ; D. Falk ; R. Martin ; L. Aiello
Nature Publishing Group (NPG)
Published 2014Staff ViewPublication Date: 2014-10-25Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; *Biological Evolution ; Caves ; Expeditions ; Female ; *Fossils ; Hominidae/*anatomy & histology/*classification ; Humans ; Indonesia ; Islands ; Microcephaly ; Skeleton ; Skull/anatomy & histology/pathology ; Species SpecificityPublished by: -
4Latest Papers from Table of Contents or Articles in PressR. Do ; N. O. Stitziel ; H. H. Won ; A. B. Jorgensen ; S. Duga ; P. Angelica Merlini ; A. Kiezun ; M. Farrall ; A. Goel ; O. Zuk ; I. Guella ; R. Asselta ; L. A. Lange ; G. M. Peloso ; P. L. Auer ; D. Girelli ; N. Martinelli ; D. N. Farlow ; M. A. DePristo ; R. Roberts ; A. F. Stewart ; D. Saleheen ; J. Danesh ; S. E. Epstein ; S. Sivapalaratnam ; G. K. Hovingh ; J. J. Kastelein ; N. J. Samani ; H. Schunkert ; J. Erdmann ; S. H. Shah ; W. E. Kraus ; R. Davies ; M. Nikpay ; C. T. Johansen ; J. Wang ; R. A. Hegele ; E. Hechter ; W. Marz ; M. E. Kleber ; J. Huang ; A. D. Johnson ; M. Li ; G. L. Burke ; M. Gross ; Y. Liu ; T. L. Assimes ; G. Heiss ; E. M. Lange ; A. R. Folsom ; H. A. Taylor ; O. Olivieri ; A. Hamsten ; R. Clarke ; D. F. Reilly ; W. Yin ; M. A. Rivas ; P. Donnelly ; J. E. Rossouw ; B. M. Psaty ; D. M. Herrington ; J. G. Wilson ; S. S. Rich ; M. J. Bamshad ; R. P. Tracy ; L. A. Cupples ; D. J. Rader ; M. P. Reilly ; J. A. Spertus ; S. Cresci ; J. Hartiala ; W. H. Tang ; S. L. Hazen ; H. Allayee ; A. P. Reiner ; C. S. Carlson ; C. Kooperberg ; R. D. Jackson ; E. Boerwinkle ; E. S. Lander ; S. M. Schwartz ; D. S. Siscovick ; R. McPherson ; A. Tybjaerg-Hansen ; G. R. Abecasis ; H. Watkins ; D. A. Nickerson ; D. Ardissino ; S. R. Sunyaev ; C. J. O'Donnell ; D. Altshuler ; S. Gabriel ; S. Kathiresan
Nature Publishing Group (NPG)
Published 2014Staff ViewPublication Date: 2014-12-10Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Age Factors ; Age of Onset ; *Alleles ; Apolipoproteins A/*genetics ; Case-Control Studies ; Cholesterol, LDL/blood ; Coronary Artery Disease/genetics ; Exome/*genetics ; Female ; Genetic Predisposition to Disease/*genetics ; Genetics, Population ; Heterozygote ; Humans ; Male ; Middle Aged ; Mutation/genetics ; Myocardial Infarction/blood/*genetics ; National Heart, Lung, and Blood Institute (U.S.) ; Receptors, LDL/*genetics ; Triglycerides/blood ; United StatesPublished by: -
5Latest Papers from Table of Contents or Articles in PressB. A. Golomb ; S. Brenner ; M. Chalfie ; S. L. Glashow ; R. J. Glauber ; D. H. Hubel ; E. S. Maskin ; P. Greengard ; D. J. Gross ; R. Roberts ; S. Tonegawa ; F. A. Wilczek ; E. M. Brown ; T. J. Sejnowski
Nature Publishing Group (NPG)
Published 2013Staff ViewPublication Date: 2013-07-28Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: *Cacao ; Diet/*statistics & numerical data ; Humans ; Male ; *Nobel PrizePublished by: -
6Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2015-10-22Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; Bacteria/metabolism ; Climate Change ; Food Safety ; *Food, Genetically Modified ; Humans ; Microbiota/*physiology ; Nobel Prize ; Organisms, Genetically Modified/*geneticsPublished by: -
7Articles: DFG German National LicensesFlexner, J. B. ; Flexner, L. B. ; Stellar, E. ; Haba, G. de la ; Roberts†, R. B.
Oxford, UK : Blackwell Publishing Ltd
Published 1962Staff ViewISSN: 1471-4159Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineType of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesSchilling, Christopher H. ; García, Victor J. ; Smith, Rachelle M. ; Roberts, R. A.
Westerville, Ohio : American Ceramics Society
Published 1998Staff ViewISSN: 1551-2916Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsPhysicsNotes: Green and partially sintered compacts of alpha-Al2O3 powder were made by filtration of aqueous suspensions under three conditions: (i) electrostatic stabilization without any organic additive, (ii) strong flocculation near the isoelectric point without any organic additive, and (iii) weak flocculation by the use of maltodextrin or oxalic acid additives. We evaluated relationships between the macroscopic and interparticle mechanical behavior of these compacts using model correlations with measurements of diametral compression, ultrasonic velocity, and ultrasonic attenuation. Although type iii green specimens were less dense than type i, type iii exhibited significant increases in velocity, macroscopic Young's modulus, interparticle-contact stiffness, and diametral compressive strength, suggesting that the mechanism of stiffening/strengthening entailed interparticle bridging of maltodextrin or oxalic acid. These properties were significantly reduced upon heating type iii specimens to 500°C, suggesting that pyrolysis of surface-adsorbed maltodextrin and oxalic acid may have reduced the interparticle stiffness and strength. In contrast, negligible changes in these properties occurred upon heating type i specimens to the same temperature. Despite small increases in packing density, significant decreases in attenuation and significant increases in velocity, interparticle-contact stiffness, and Young's modulus occurred upon heating all specimens to greaterthan equal to700°C, suggesting the formation of interparticle necks by solid-state sintering.Type of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesDwivedi, Y. ; Rizavi, H. S. ; Roberts, R. C. ; Conley, R. C. ; Tamminga, C. A. ; Pandey, G. N.
Oxford, UK : Blackwell Science Ltd
Published 2001Staff ViewISSN: 1471-4159Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: The extracellular regulated kinases (ERK) 1 and ERK2 are members of mitogen-activated protein (MAP) kinase family that play an important role in transducing extracellular signals to the nucleus and have been implicated in a broad spectrum of biological responses. To test the hypothesis that MAP kinases may be involved in depression, we examined the activation of p44/42 MAP kinase and expression of ERK1 and ERK2 in the post-mortem brain tissue obtained from non-psychiatric control subjects (n = 11) and age- and the post-mortem interval-matched depressed suicide subjects (n = 11). We observed that p44/42 MAP kinase activity was significantly decreased in the prefrontal cortical areas (Brodmann's areas 8, 9 and 10) and the hippocampus of depressed suicide subjects without any change in the cerebellum. This decrease was associated with a decrease in mRNA and protein levels of ERK1 and ERK2. In addition, the expression of MAP kinase phosphatase (MKP)2, a ‘dual function’ ERK1/2 phosphatase, was increased in the prefrontal cortex and hippocampus. These studies suggest that p44/42 MAP kinases are less activated in the post-mortem brain of depressed suicide subjects and this may be because of reduced expression of ERK1/2 and increased expression of MKP2. Given the role of MAP kinases in various physiological functions and gene expression, alterations in p44/42 MAP kinase activation and expression of ERK1/2 may contribute significantly to the pathophysiology of depressive disorders.Type of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesRoberts, R. G. ; Hagston, W. E. ; Harrison, P.
[S.l.] : American Institute of Physics (AIP)
Published 1996Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: The possibility of using spin-flip Raman spectroscopy as a tool for determining accurately the disorder in magnetic superlattice (SL) microstructures is examined theoretically. It is shown that the spin-flip Raman spectra for a weakly coupled SL, disordered in units of monolayers, will consist of a number of peaks equal to the number of possible values of the disorder (m) in a given quantum well associated with a given value of the magnitude of the disorder (M). The various peaks can be associated with a particular value of m from observation of their relative intensities. © 1996 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesRoberts, R. G. ; Hagston, W. E. ; Chen, P. ; Nicholls, J. E. ; O'Neill, M.
[S.l.] : American Institute of Physics (AIP)
Published 1997Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: The effects on the carrier wave functions of introducing monolayer disorder at the heterojunction interfaces of an undoped superlattice are elucidated. In particular the rate and extent of the resulting localization is quantified by means of an entity C, which is the joint probability of finding two carriers in the same region of space. Evaluating the latter for all states in the miniband provides clear evidence for the existence of a mobility edge in finite two-dimensional structures. Using the entity C as the basis for a semiclassical evaluation of carrier transport, it is shown that the experimentally observed activated transport can be accounted for in terms of the excitation of carriers from the localized states at the bottom of the miniband into the more extended midband miniband states. Comparison of the theoretical results with the experimental results given [Chen et al., J. Cryst. Growth 159, 1066 (1996)], enables conclusions to be drawn concerning the mechanism of activated carrier transport in doped superlattice systems. © 1997 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesMacfarlane, J. C. ; Driver, R. ; Roberts, R. B.
Woodbury, NY : American Institute of Physics (AIP)
Published 1987Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: We report the first observations at liquid-nitrogen temperatures of parametric inductance behavior, signal up-conversion, and the nondestructive read-out of persistent supercurrent states in a superconductor. These observations have been made using a toroidal transformer with a core of the high-temperature superconductor YBa2Cu3O6.8. The effects arise from the field-dependent behavior of the magnetic susceptibility of this superconductor.Type of Medium: Electronic ResourceURL: -
13Articles: DFG German National LicensesDou, S. X. ; Bourdillon, A. J. ; Sorrell, C. C. ; Ringer, S. P. ; Easterling, K. E. ; Savvides, N. ; Dunlop, J. B. ; Roberts, R. B.
Woodbury, NY : American Institute of Physics (AIP)
Published 1987Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: The onset of superconductivity at 140 K has been observed in the high Tc Y-Ba-Cu-O system in samples consisting of 90% by volume of a single-phase oxide of average cation ratio Y:Ba:Cu(approximately-equal-to)1:2:3. A sharp superconducting transition in the resistivity has been measured, where Tc0=140 K, Tc=93.2 K, ΔTc=0.5 K, and "zero resistance'' was observed at 92.0 K. Transmission electron microscopy and energy dispersive spectroscopy measurements revealed that the superconducting phase consisted of a large number of microcrystallites of (approximately-equal-to)0.5 μm size and that these contained a very high defect microtwinned/faulted structure.Type of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesFlexner, L. B. ; Flexner, J. B. ; La Haba, G. ; Roberts, R. B.
Oxford, UK : Blackwell Publishing Ltd
Published 1965Staff ViewISSN: 1471-4159Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineType of Medium: Electronic ResourceURL: -
15Articles: DFG German National LicensesReisinger, A. R. ; Roberts, R. N. ; Chinn, S. R. ; Myers II, T. H.
[S.l.] : American Institute of Physics (AIP)
Published 1989Staff ViewISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: Semiconductor materials commonly used in mid- and long-wavelength infrared sensing applications generally have a low radiative efficiency, and the ambient blackbody radiation spectrum often dominates and interferes with the identification of the photoluminescence peak. Two techniques designed to facilitate the extraction of the spontaneous radiative spectrum are discussed and compared.Type of Medium: Electronic ResourceURL: -
16Articles: DFG German National LicensesStaff View
ISSN: 1467-9787Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: GeographyEconomicsType of Medium: Electronic ResourceURL: -
17Articles: DFG German National LicensesStaff View
ISSN: 1467-9787Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: GeographyEconomicsType of Medium: Electronic ResourceURL: -
18Articles: DFG German National LicensesAnderson, C. D. ; Roberts, R. J. ; MacKenzie, K. ; McVicar, A. H.
Oxford, UK : Blackwell Publishing Ltd
Published 1976Staff ViewISSN: 1095-8649Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyNotes: The histopathology of biliary hyperplasia and renal calcinosis, associated with infections of two parasites, Myxidium incurvatum and Rhabdospora thelohani, is described in turbot, Scophthalmus maximus (L.), from Scottish marine fish farms and wild populations. Liver and kidney lesions were divided into four, and parasite infections into five grades of severity. A few of the fish examined were not parasitized, but every one showed some evidence of pathological change, even the apparently normal individuals from all populations. Although there is a positive association between the parasitic and pathological data, parasitism is not considered to be the principal cause of either the hepatic or renal lesion; the evidence suggests rather a secondary opportunist role for the parasites. The general severity of the condition in captive stocks suggests that the cause may lie in the fundamentals of present techniques of turbot husbandry, but no specific agent has been identified. A case is put forward for considering Rhabdospora to be a parasite rather than a specialized host cell.Type of Medium: Electronic ResourceURL: -
19Articles: DFG German National LicensesEllis, A. E. ; Munroe, A. L. S. ; Roberts, R. J.
Oxford, UK : Blackwell Publishing Ltd
Published 1976Staff ViewISSN: 1095-8649Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyNotes: The lympho-reticular tissues in the plaice were investigated for their phagocytic properties on colloidal carbon after its intraperitoneal injection. Fish were killed at intervals ranging from 10 min to 25 days after injection. Although peritoneal macrophages constituted a large population of phagocytic cells, most of the carbon apparently gained access to the circulation as free particles and phagocytosis was performed predominantly by the ellipsoids of the spleen, the network of reticulo-endothelial (RE) cells throughout the haemopoietic tissue of the kidney, and by the RE cells occupying intermuscular spaces in the atrium of the heart. The cardiac macrophages rapidly emigrated from the organ while the carbon containing macrophages in the kidney and spleen formed aggregates in the lymphoid areas, either within or outwith pre-existing aggregates of melano-macrophages.The possible significance of phagocyte aggregations, including melano-macrophages, in association with lymphoid elements in the kidney and spleen is discussed in the context of immune mechanisms.Type of Medium: Electronic ResourceURL: -
20Articles: DFG German National LicensesStaff View
ISSN: 1095-8649Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyNotes: The rate of healing of a surgical wound was studied in two teleost fish, one with a tropical, and the other with a temperate temperature range. Comparisons were made of both the rate and qualitative nature of wound healing within and between species at temperatures of 30,23,10 and 5° C. The rate of wound healing was found to be proportional to temperature and temperature stress had little effect on healing rates. The findings were related to reported rates of wound healing in man. In general the wounds studied healed at a rate comparable to those reported for the healing of superficial skin wounds in man and other mammals despite the fact that the fish wounds were not merely superficial but involved integument and muscle.Type of Medium: Electronic ResourceURL: