Search Results - (Author, Cooperation:V. Srinivas)

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  1. 1
    N. Annaluru ; H. Muller ; L. A. Mitchell ; S. Ramalingam ; G. Stracquadanio ; S. M. Richardson ; J. S. Dymond ; Z. Kuang ; L. Z. Scheifele ; E. M. Cooper ; Y. Cai ; K. Zeller ; N. Agmon ; J. S. Han ; M. Hadjithomas ; J. Tullman ; K. Caravelli ; K. Cirelli ; Z. Guo ; V. London ; A. Yeluru ; S. Murugan ; K. Kandavelou ; N. Agier ; G. Fischer ; K. Yang ; J. A. Martin ; M. Bilgel ; P. Bohutski ; K. M. Boulier ; B. J. Capaldo ; J. Chang ; K. Charoen ; W. J. Choi ; P. Deng ; J. E. DiCarlo ; J. Doong ; J. Dunn ; J. I. Feinberg ; C. Fernandez ; C. E. Floria ; D. Gladowski ; P. Hadidi ; I. Ishizuka ; J. Jabbari ; C. Y. Lau ; P. A. Lee ; S. Li ; D. Lin ; M. E. Linder ; J. Ling ; J. Liu ; M. London ; H. Ma ; J. Mao ; J. E. McDade ; A. McMillan ; A. M. Moore ; W. C. Oh ; Y. Ouyang ; R. Patel ; M. Paul ; L. C. Paulsen ; J. Qiu ; A. Rhee ; M. G. Rubashkin ; I. Y. Soh ; N. E. Sotuyo ; V. Srinivas ; A. Suarez ; A. Wong ; R. Wong ; W. R. Xie ; Y. Xu ; A. T. Yu ; R. Koszul ; J. S. Bader ; J. D. Boeke ; S. Chandrasegaran
    American Association for the Advancement of Science (AAAS)
    Published 2014
    Staff View
    Publication Date:
    2014-03-29
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Base Sequence ; *Chromosomes, Fungal/genetics/metabolism ; DNA, Fungal/genetics ; Genes, Fungal ; Genetic Fitness ; Genome, Fungal ; Genomic Instability ; Introns ; Molecular Sequence Data ; Mutation ; Polymerase Chain Reaction ; RNA, Fungal/genetics ; RNA, Transfer/genetics ; Saccharomyces cerevisiae/cytology/*genetics/physiology ; Sequence Analysis, DNA ; Sequence Deletion ; Synthetic Biology/*methods ; Transformation, Genetic
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Srinivas V. Koduru, Ben-hua Sun, Joanne M. Walker, Meiling Zhu, Christine Simpson, Madhav Dhodapkar, Karl L. Insogna
    The American Society for Biochemistry and Molecular Biology (ASBMB)
    Published 2018
    Staff View
    Publication Date:
    2018-09-29
    Publisher:
    The American Society for Biochemistry and Molecular Biology (ASBMB)
    Print ISSN:
    0021-9258
    Electronic ISSN:
    1083-351X
    Topics:
    Biology
    Chemistry and Pharmacology
    Published by:
    http://www.asbmb.org/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    Pietambaram, Srinivas V. ; Kumar, D. ; Singh, Rajiv K.

    [S.l.] : American Institute of Physics (AIP)
    Published 1999
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    In this article we report our studies on the microstructure, magnetoresistance (MR) behavior, and magnetic properties of the La1−x−yCaxMnO3 system in thin-film form. By varying the values of x and y in La1−x−yCaxMnO3, we have synthesized an external- (x=0.3, y=0), an internal- (x=0, y=0.3), and a mixed-doped (x=0.2, y=0.1) system with the same Mn3+/Mn4+ ratio. Thin films of these materials have been grown in situ on (100) LaAlO3 substrates using a pulsed-laser-deposition technique. Atomic force microscopy, x-ray diffraction and high-resolution transmission electron microscopy measurements carried out on these films have shown that the films are smooth, highly crystalline, and epitaxial on the (100) LaAlO3 substrates. Electrical resistance and magnetoresistance have been measured in the 10–300 K range in magnetic fields up to 5 T using a superconducting quantum interference device magnetometer. The MR ratios (calculated using the expression, [R0−RH]/RH, where R0 and RH are resistances in zero and applied fields) of the La0.7Ca0.3MnO3 (x=0.3, y=0), La0.7MnO3 (x=0, y=0.3), and La0.7Ca0.2MnO3 (x=0.2, y=0.1) films are found to be 825%, 700%, and 750% at 200, 240, and 220 K, respectively. The MR ratios of these films, calculated using the expression, [R0−RH]/RH, are 91%, 87%, and 88%, respectively, at the same temperatures. The variation in the insulator-to-metal transition and the MR ratio is attributed to internal chemical pressure and vacancy localization effects. Below Tc/2 (Tc is paramagnetic-to-ferromagnetic transition temperature), resistance increases as T2 for La0.7Ca0.3MnO3 and La0.7Ca0.2MnO3 while it increases as T5/2 for La0.7MnO3. The T2 and T5/2 dependence of resistance suggests that the transport is predominantly governed by an electron–electron scattering and a combination of electron–electron, electron–phonon, and electron–magnon scattering, respectively. High-temperature resistance has been observed to be consistent with small polaron hopping conductivity for all three systems. Magnetization measurements carried out on the films show that the films have reasonably square hysteresis loops with sharp Tc's. Below Tc/2, the magnetization decreases as T2 for La0.7Ca0.2MnO3 and La0.7MnO3, suggesting single-particle excitations in them, while it decreases as T3/2 for La0.7Ca0.3MnO3, representing collective oscillations in this system. © 1999 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.371208

    Articles: DFG German National Licenses
  4. 4
    Srinivas, V. ; Nigam, A. K. ; Chandra, G. ; Lawther, D. W. ; Yewondwossen, M. ; Dunlap, R. A.

    [S.l.] : American Institute of Physics (AIP)
    Published 1994
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The magnetic and electrical transport properties of amorphous Fe-Zr based alloys with compositions near 10 at. % Zr with various elements substituted for Fe are of particular interest. In the case of Mn substitutions the Curie temperature and the average magnetic moment decrease monotonically with increasing Mn content and the temperature dependence of the magnetization is significantly modified. The electrical transport properties of amorphous Fe90−xMnxZr10 (for x=0, 4, 8, and 12) over the temperature range of 4.2–300 K and the magnetoresistance for fields up to 4.0 T at 4.2 K are reported in the present work. A broad minimum in the resistivity is observed at around 255, 235, 200, and 180 K for the four compositions, respectively. In the case of the x=8 sample a second minimum occurs at around 50 K. The magnetoresistance of all samples shows a sharp increase for small fields and a linear field relationship for fields above about 0.1 T.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.358242

    Articles: DFG German National Licenses
  5. 5
    Dunlap, R. A. ; McHenry, M. E. ; O'Handley, R. C. ; Bahadur, D. ; Srinivas, V.

    [S.l.] : American Institute of Physics (AIP)
    Published 1988
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Rapidly solidified Ti-Ni-Fe-Si alloys are found to form a metastable phase with x-ray diffraction patterns which can be indexed to a structure with icosahedral symmetry. 57 Fe Mössbauer effect spectra show a negligible quadrupole splitting for the icosahedral phase. This observation, along with a comparison of the measured x-ray diffraction line intensities with calculated values, suggests a structure based on a decoration of a three-dimensional Penrose tiling, with transition-metal atoms in sites with local icosahedral symmetry. Magnetic susceptibility measurements show that a local moment of ∼0.2 μB forms on the Fe atom. These results are discussed in terms of possible local Fe environments.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.342162

    Articles: DFG German National Licenses
  6. 6
    Pietambaram, Srinivas V. ; Kumar, D. ; Singh, Rajiv K.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 2001
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Superlattice structures consisting of La0.7MnO3−δ (LMO) and Pr0.65Ba0.05Ca0.3MnO3−δ (PBCMO) systems, in which the thickness of La0.7MnO3−δ is fixed and that of Pr0.65Ba0.05Ca0.3MnO3−δ varied from 1 to 8 unit cells, have been grown in situ on (100) LaAlO3 substrates using a pulsed-laser deposition technique. Microstructural characterization carried out on these films shows the presence of characteristic intense satellite peaks, indicating the chemical modulation of the superlattice structure. The insulator-to-metal transition and the magnetoresistance (MR) ratio are found to vary with the number of unit cells. The samples with 1, 2, 5, and 8 unit cells of Pr0.65Ba0.05Ca0.3MnO3−δ show transition temperatures of 240, 230, 150, and 160 K and MR ratios of 540%, 592%, 3150%, and 2875%, respectively. We have observed an enhancement of magnetoresistance ratios in the case of superlattices with a thickness of PBCMO greater than 5 unit cells, which may be attributed to a ferromagnetic biasing provided by the LMO layers acting as a ferromagnetic film below its transition temperature. © 2001 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.1338498

    Articles: DFG German National Licenses
  7. 7
    Deshabhoina, Srinivas V. ; Umbaugh, Scott E. ; Stoecker, William V. ; Moss, Randy H. ; Srinivasan, Subhashini K.

    Oxford, UK : Munksgaard International Publishers
    Published 2003
    Staff View
    ISSN:
    1600-0846
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    Purpose: To explore texture features in two-dimensional images to differentiate seborrheic keratosis from melanoma.Methods: A systematic approach to consistent classification of skin tumors is described. Texture features, based on the second-order histogram, were used to identify the features or a combination of features that could consistently differentiate a malignant skin tumor (melanoma) from a benign one (seborrheic keratosis). Two hundred and seventy-one skin tumor images were separated into training and test sets for accuracy and consistency. Automatic induction was applied to generate classification rules. Data analysis and modeling tools were used to gain further insight into the feature space.Result and Conclusions: In all, 85–90% of seborrheic keratosis images were correctly differentiated from the malignant skin tumors. The features correlation_average, correlation_range, texture_energy_average and texture_energy_range were found to be the most important features in differentiating seborrheic keratosis from melanoma. Over-all, the seborrheic keratosis images were better identified by the texture features than the melanoma images.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1034/j.1600-0846.2003.00044.x

    Articles: DFG German National Licenses
  8. 8
    Srinivas, V. ; Dunlap, R. A. ; McHenry, M. E. ; O'Handley, R. C.

    [S.l.] : American Institute of Physics (AIP)
    Published 1990
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Magnetization and Mössbauer-effect studies of ferromagnetic Al-Mn-Si and Al-Mn-Cu-Ge quasicrystals are presented. All alloys show paramagnetic or spin-glass behavior in addition to ferromagnetism at low temperatures. The effects of Fe substitution on the magnetic properties were investigated. Possible models for ferromagnetic order in quasicrystals are discussed.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.346001

    Articles: DFG German National Licenses
  9. 9
    Chatterjee, Ratnamala ; Dunlap, R. A. ; Srinivas, V. ; O'Handley, R. C.

    [S.l.] : American Institute of Physics (AIP)
    Published 1990
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Recently, some Al-Mn-Si (Ref. 1) and Al-Mn-Ge (Ref. 2) quasicrystals (with high-Mn and metalloid content) have been reported to show ferromagnetic behavior. The ferromagnetic Al-Mn-Si quasicrystals show low Curie temperature, Tc∼107 K and very weak, strongly field-dependent magnetization (Ms∼0.1 emu/g). The Al-Mn-Ge ferromagnetic quasicrystals are also reported to have low magnetization (∼0.2 emu/g in a field of 20 kOe), fairly high Curie temperature (maximum Tc was quoted for Al52.5Ge22.5Mn25 to be ∼533 K), and also a coercivity in the range of 0.7–1.1 kOe. A crystalline compound close in composition to these quasicrystals, equiatomic AlMnGe,3 is strongly ferromagnetic with a moment at 77 K∼1.7 μB/Mn atom and Tc∼518 K. Many questions are unanswered about these new quasicrystals: Why do they have such low magnetization yet relatively high Tc? Why does Tc increase so strongly when Ge replaces Si? What kind of magnetic order exists in these alloys; is it really ferromagnetic? How many of the transition-metal species are participating in moment formation and what kind of exchange interactions are coupling them? Detailed magnetic measurements on the Al37Mn30Si33 quasicrystals are presented. It has been established that this high-Mn content quasicrystal is not a real ferromagnet and instead shows a concentrated spin-glass behavior with a reentrant ferromagnetism. For the first time a coherent picture of the magnetic phase-diagram of different Mn content Al-Mn-Si, Ge quasicrystals is presented and some of the crucial questions concerning the magnetism in quasicrystal structure have been answered.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.346011

    Articles: DFG German National Licenses
  10. 10
    Staff View
    ISSN:
    1600-065X
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1600-065X.1994.tb00858.x

    Articles: DFG German National Licenses
  11. 11
    Staff View
    ISSN:
    0304-8853
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0304-8853(92)91694-O

    Articles: DFG German National Licenses
  12. 12
    Staff View
    ISSN:
    0014-5793
    Keywords:
    Buffalo pituitary ; Immunoprecipitation ; LH antiserum ; Lutropin ; Rat LH ; Sulfate incorporation
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0014-5793(83)80171-9

    Articles: DFG German National Licenses
  13. 13
    Staff View
    ISSN:
    0040-4020
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/S0040-4020(01)80104-6

    Articles: DFG German National Licenses
  14. 14
    Staff View
    ISSN:
    0038-1098
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0038-1098(85)90004-3

    Articles: DFG German National Licenses
  15. 15
    Staff View
    ISSN:
    0038-1098
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0038-1098(92)90213-S

    Articles: DFG German National Licenses
  16. 16
    Srinivas, V. ; Chen, Y.J. ; Wood, C.E.C.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0038-1098
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0038-1098(94)90174-0

    Articles: DFG German National Licenses
  17. 17
    Staff View
    ISSN:
    0304-8853
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0304-8853(86)90577-9

    Articles: DFG German National Licenses
  18. 18
    Staff View
    ISSN:
    0304-8853
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0304-8853(88)90057-1

    Articles: DFG German National Licenses
  19. 19
    Staff View
    ISSN:
    0304-8853
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0304-8853(90)90684-I

    Articles: DFG German National Licenses
  20. 20
    Biswas, J. ; Srinivas, V.
    Springer
    Published 1999
    Staff View
    ISSN:
    1570-5846
    Keywords:
    0-cycle ; Roitman theorem ; Lefschetz theorem.
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Mathematics
    Notes:
    Abstract We construct an Abel–Jacobi mapping on the Chow group of 0-cycles of degree 0, and prove a Roitman theorem, for projective varieties over C with arbitrary singularities. Along the way, we obtain a new version of the Lefschetz Hyperplane theorem for singular varieties.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1023/A:1001793226084

    Articles: DFG German National Licenses