189 research outputs found
Effects of Temperature and Light on Aerial Breathing of the Longnose Gar, Lepisosteus Osseus
Get PDFAuthor Institution: Department of Zoology, University of OklahomaSAKSENA, VISHNU P. Effects of temperature and Light on Aerial Breathing of the Longnose Gar, Lepisosteus osseus. Ohio J. Sci. 72(1): 58, 1975
An Analysis of Symphony No. 19 ( Vishnu ) by Alan Hovhaness, and Kshetrajna , an Original Composition for Orchestra.
Get PDFThis dissertation consists of two parts, both of which share a common link through their inspiration from Hinduism. Part I is an analysis of Hovhaness\u27s Symphony No. 19 (Vishnu). Part II is an original composition in three movements for orchestra entitled Kshetrajna. Hovhaness\u27s Symphony No. 19 (Vishnu), composed between July and August, 1966, in Luzern, Switzerland, is a single movement work of tripartite structure, for symphony orchestra. The title, Vishnu, refers to the second person of the Hindu trinity, whose name is a remarkable metaphor for the explosive energies and sustaining forces of the universe. The work is impressionistic in a sense; Hovhaness achieves a great wealth of atmospheric effects, highly suggestive of cosmic space and events (viz., exploding galaxies, vast emptiness and timelessness). Hovhaness is very much a mystic, and this one quality is poignantly manifested in Vishnu through the many Eastern and mesmeric devices employed in the work. In the following analysis the various parameters of form, tonality and modality, senza misura practices, melody and vertical sonority found in Hovhaness\u27s 19th symphony are described in depth. The second part of the dissertation, Kshetrajna, is an original orchestral composition in three movements by the author. The title, Kshetrajna, is a Sanskrit term meaning knower of the field. The work draws its inspiration from the thirteenth chapter of the Bhagavad Gita in which Krishna relates to Arjuna knowledge about the field (physical manifestation in its totality) and its knower (the conscious ego). Two basic motives are thus interwoven through the course of the work, and manipulated in diverse ways. The three movements generally adhere to the scheme, fast-slow-fast, respectively. The movements are essentially through-composed, and follow no traditional formal outlines
The iEBE-VISHNU code package for relativistic heavy-ion collisions
No full textThe iEBE-VISHNU code package performs event-by-event simulations for relativistic heavy-ion collisions using a hybrid approach based on (2 + 1)-dimensional viscous hydrodynamics coupled to a hadronic cascade model. We present the detailed model implementation, accompanied by some numerical code tests for the package. iEBE-VISHNU forms the core of a general theoretical framework for model-data comparisons through large scale Monte-Carlo simulations. A numerical interface between the hydrodynamically evolving medium and thermal photon radiation is also discussed. This interface is more generally designed for calculations of all kinds of rare probes that are coupled to the temperature and flow velocity evolution of the bulk medium, such as jet energy loss and heavy quark diffusion. Program summary Program title: iEBE-VISHNU Catalogue identifier: AEYA_v1_0 Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AEYA_v1_0.html Program obtainable from: CPC Program Library, Queen's University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 5257939 No. of bytes in distributed program, including test data, etc.: 262822421 Distribution format: tar.gz Programming language: Fortran, C++, python, bash, SQLite. Computer: Laptop, desktop, cluster. Operating system: Tested on GNU/Linux Ubuntu 12.04 x64, Red Hat Linux 6, Mac OS X 10.8+. RAM: 2G bytes Classification: 17.11, 17.16, 17.20. External routines: GNU Scientific Library (GSL), HDF5 (Fortran and C++ enabled), Numpy Nature of problem: Relativistic heavy-ion collisions are tiny in size (V approximate to 10(-42) m(3)) and live in a flash (similar to 5 x 10(-23) s). It is impossible to use external probes to study the properties of the quark-gluon plasma (QGP), a novel state of matter created during the collisions. Experiments can only measure the momentum information of stable hadrons, who are the remnants of the collisions. In order to extract the thermal and transport properties of the QGP one needs to rely on Monte-Carlo event-by-event model simulations, which reverse-engineer the experimental measurements to the early time dynamics of the relativistic heavy-ion collisions. Solution method: Relativistic heavy-ion collisions contain multiple stages of evolution. The physics that governs each stage is implemented into individual code components. A general driver script glues all the modular packages as a whole to perform large-scale Monte-Carlo simulations. The final results are stored into SQLite database, which supports standard querying for massive data analysis. By tuning transport coefficients of the QGP as free parameters, e.g. the specific shear viscosity eta/s, we can constrain various transport properties of the QGP through model-data comparisons. Additional comments: !!!!! The distribution file for this program is over 260 Mbytes and therefore is not delivered directly when download or Email is requested. Instead a html file giving details of how the program can be obtained is sent. !!!!! Running time: The following running time is tested on a laptop computer with a 2.4 GHz Intel Core i5 CPU, 4 GB memory. All the C++ and Fortran codes are compiled with the GNU Compiler Collection (GCC) 4.9.2 and -03 optimization (Table 1). (C) 2015 Elsevier B.V. All rights reserved.U.S. Department of Energy, Office of Science, Office of Nuclear Physics [DE-SC0004286, DE-FG02-05ER41367, DE-SC0004104]; Natural Sciences and Engineering Research Council of CanadaSCI(E)[email protected]; [email protected]
Optogenetic control of developmental signaling pathways
Get PDFHow a complex multicellular organism forms from a single cell is a question that defies simplistic understanding. Yet, embryonic developmental programs use a surprisingly small set of signaling pathways to pattern the embryonic tissue into germ layers from which the various tissues and organs emerge. A hallmark of embryonic development is that these recurring developmental signaling pathways are carefully orchestrated in space and time to facilitate proper development. Understanding the spatiotemporal intricacies of these pathways necessitates tools which enable their perturbation in precisely defined spatiotemporal patterns. Optogenetics uses light-induced conformational changes to enable or disable protein-protein interactions, thereby permitting control of signal transduction at the flip of a switch. Consequently, light is emerging as a powerful tool to study embryonic development owing to its rapid, reversible and residue-free application, which empowers the researcher with excellent spatial and temporal control of signaling. Here, I first review recent accomplishments in optical microscopy and optogenetics which highlight the dual roles of light in visualizing as well as perturbing cellular microenvironments and processes. Second, I present an optogenetic approach to control the mitogen-activated protein kinase (MAPK) pathway which we successfully applied in both neuroblasts and frog embryos. Third, I demonstrate an optogenetic approach to control the Wnt signaling pathway in mammalian cells and frog embryos. Finally, I propose and provide working proof for a generalizable optogenetic platform to control those developmental signaling pathways, the activities of which involve the homo-association of plasma membrane-localized receptor tyrosine kinases.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2021-12-01The student, Vishnu Vardhan Krishnamurthy, accepted the attached license on 2019-11-27 at 10:27.The student, Vishnu Vardhan Krishnamurthy, submitted this Dissertation for approval on 2019-11-27 at 10:29.This Dissertation was approved for publication on 2019-12-04 at 10:19.DSpace SAF Submission Ingestion Package generated from Vireo submission #14554 on 2020-02-28 at 17:36:14Made available in DSpace on 2020-03-02T22:38:43Z (GMT). No. of bitstreams: 3
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Spectra and Elliptic Flow of (Multi)Strange Hadrons at RHIC and LHC within Viscous Hydrodynamics + Hadron Cascade Hybrid Model
Get PDFUsing the (2+1)-dimensional ultrarelativistic viscous hydrodynamics + hadron cascade, VISHNU, hybrid model, we study the pT-spectra and elliptic flow of Λ, Ξ, and Ω in Au + Au collisions at sNN = 200 GeV and in Pb + Pb collisions at sNN = 2.76 TeV. Comparing our model results with the data measurements, we find that the VISHNU model gives good descriptions of the measurements of these strange and multistrange hadrons at several centrality classes at RHIC and LHC. Mass ordering of elliptic flow v2 among π, K, p, Λ, Ξ, and Ω are further investigated and discussed at the two collision systems. We find that, at both RHIC and LHC, v2 mass ordering among π, K, p, and Ω is fairly reproduced within the VISHNU hybrid model, and more improvements are needed to be implemented for well describing v2 mass ordering among p, Λ, and Ξ
Scientometric portrait of Ram Gopal Rastogi
Get PDFPublication productivity of Indian scientist (R.G. Rastogi) has been documented.
Scientometric analysis of 312 papers by Ram Gopal Rastogi published during 1954 to 1992 in various domains: (a) Luni -solar activity and quiet -time E & F- region (57); (b) Equatorial electric field and low and mid latitude iof:osphere (78); (c) Ionospheric E- region irregularities (19); (dj Ionospheric F- region irregularities (32); and (e) Magnetic disturbance effects on the equatorial low and mid latitude ionosphere (23) were analysed. Interdomainery contents and of the number of papers: a+b were 36; b+c and b+d were 20 each; b+e were 16;. c+e were 5; a+e were 3; d+e were 2; and a+d had only one publication. Highest collaborations were with H. Chandra (61), M.R. Deshpande (42), and G. Sethia (19) out of his total 97 collaborators. His highest productivity was during 1978 with 28 papers followed by 19 papers during 1977. The core journals preferred by him for publishing papers were: Indian Journal of Radio & Space Physics, India, and Journal of Atomic & Terrestrial Physics, UK (59 each), followed by Proceedings of the Indian Academy of Sciences, India (34). Most prolific title keywords with their frequencies were: Ionosphere (92); Equatorial (61); F-region (53); Equatorial electrojet region (40), and Magnetic equator (30)
High-order flow harmonics of identified hadrons in 2.76A TeV Pb plus Pb collisions
No full textUsing the iEBE-VISHNU hybrid model with AMPT initial conditions, we study the higher order flow harmonics of identified hadrons in 2.76A TeV Pb+Pb collisions. Comparison with the recent ALICE measurements at 20-30% centrality shows that our calculations generally describe the data below 2 GeV, especially for the upsilon(2), upsilon(3), and upsilon(4) mass orderings among pions, kaons, and protons. We also extended the calculations to other centrality bins, which presents similar mass-ordering patterns for these flow harmonics as the ones observed at 20-30% centrality. In the later part of this article, we explore the development of upsilon(n) mass ordering/splitting during the hadronic evolution through comparison runs from the iEBE-VISHNU hybrid model and pure hydrodynamics with different decoupling temperatures.NSFC; MOST [11435001, 2015CB856900]; China Postdoctoral Science Foundation [2015M580908]SCI(E)[email protected]
Virupaksa Temple, eastern part of n. wall
No full textThe central buttress has for its main image the 8-armed figure of Kapila, the author of the Sankhya teaching. In him Vishnu (Pradyumna) was incarnated. The 8 arms hold emblems of Vishnu. The right hands show: The gesture of granting Fearlessness (abhayamudra)the cakra or Sun-wheel, ploughshare, sword and mace. The main left hand rests on the hip, the others hold conch, bow and noose (?). A gnome-like Devagana on either side. Below the projecting plinth of Kapila stele is a relief panel of Durga, the Great Goddess, slayer of the Buffalo demon, which helps fill the Ghanadvara. Its pilasters are crowned by an arch of intricate carvings. In the middle, on a console, is Uma-Mahesvara (Siva and Parvati). It is flanked by Makaras with gaping jaws, bodies of feathery foam-scrolls and putti-like Yakshas. The pantheon of the central Rath is framed by outer set of pilasters, on the highest plane of projection. Identical pilasters frame the first projection. On recessed part of wall image slab of Vishnu Varaha is surrounded by the plain surface of the large building stones, whereas the following pier sets off the shape of a small shrine against its intermediate projection... -- Images of Kapila and Vishnu Varahaand a Saiva image
WHP1
No full textHere is the first of ten 16-page boxed pamphlets, 7¼" x 9⅜". After the introduction about Vishnu Sharma, there are nine stories, each with an explicit moral highlighted apart from the story. Only the last, "The Lion and the Carpenter," is new to me. A carpenter feeds a lion daily on condition that he come alone. When he brings friends, the carpenter and his wife flee up a tree. "You broke your promise. We can't be friends anymore." The monkey gets his foot caught in the wedge. The foolish sage has a moneybag, and he lets his disciple guard it while he bathes in the river. The animals punish the blue jackal severely. The illustrations are in the style of Disney.BoxedNo Autho
Protection Study of MTDC power system
No full textThis thesis investigates and compares the performance of HVDC protection algorithms in terms of their sensitivity, selectivity, speed, and robustness. The threshold determination process for each algorithm has been described in detail as well. Each algorithm is tested under various fault resistances, and fault distances to test the sensitivity of the algorithm. The trip time for each case in each algorithm is monitored to analyze the speed of the algorithm. Various external faults have been simulated to test the selectivity of the algorithm. Lastly, the resilience of each algorithm against white noise has been tested. Furthermore, the effect of varying the sampling frequency and the inductance of the current limiting inductors on each algorithm is investigated. The HVDC protection algorithms discussed are - current differential deviation-based protection, ROCOV-based protection, ROCOC-based protection, and DC reactor voltage change rate-based protection. All protection algorithms have been implemented in the PSCAD environment. The noise resilience analysis for each algorithm has been performed in MATLAB.Electrical Engineering | Sustainable Energy Technolog
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