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Institution

Oklahoma State University–Stillwater

EducationStillwater, Oklahoma, United States
About: Oklahoma State University–Stillwater is a education organization based out in Stillwater, Oklahoma, United States. It is known for research contribution in the topics: Population & Large Hadron Collider. The organization has 18267 authors who have published 36743 publications receiving 1107500 citations. The organization is also known as: Oklahoma State University & OKState.


Papers
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Journal ArticleDOI
TL;DR: In this paper, the authors considered M-theory compactification on Calabi-Yau threefolds and showed that the topological string partition function is the Calabi Yau version of the elliptic genus of the symmetric product of $K3$'s and used the macroscopic entropy of spinning black holes in 5 dimensions to obtain new predictions for the asymptotic growth of the topologically string amplitudes at high genera.
Abstract: We consider M-theory compactification on Calabi-Yau threefolds. The recently discovered connection between the BPS states of wrapped M2 branes and the topological string amplitudes on the threefold is used both as a tool to compute topological string amplitudes at higher genera as well as to unravel the degeneracies and quantum numbers of BPS states. Moduli spaces of $k$-fold symmetric products of the wrapped M2 brane play a crucial role. We also show that the topological string partition function is the Calabi-Yau version of the elliptic genus of the symmetric product of $K3$'s and use the macroscopic entropy of spinning black holes in 5 dimensions to obtain new predictions for the asymptotic growth of the topological string amplitudes at high genera.

347 citations

Book ChapterDOI
TL;DR: Methods for determining total ROS and lipid peroxidation assay, histochemical staining techniques for superoxide and H( 2)O(2) molecules are described.
Abstract: Reactive oxygen species or intermediates are formed by the incomplete reduction of oxygen. Organisms living in aerobic environment generate various kinds of reactive oxygen species (ROS) molecules, such as superoxide (*O(2)(-)), hydrogen peroxide (H(2)O(2)), hydroxyl radical (OH(-)), singlet oxygen, and lipid hydroperoxides. ROS are highly reactive molecules and are extremely unstable, so detection of ROS relies on measuring the end products that are formed when they react with particular substances. The end products can be measured by changes in their fluorescence, color, or luminescence. ROS causes lipid peroxidation wherein the lipids in the cell membranes are damaged. Lipid peroxidation is usually quantified using a colorimetric assay. When ROS concentrations reach a certain threshold, it activates a programmed cell death response in the cells. This is quantified by measuring the amount of ion leakage. ROS such as superoxide and hydrogen peroxide have been detected traditionally by staining techniques. Superoxide anion is detected with nitroblue tetrazolium (NBT) and hydrogen peroxide by Diaminobenzidine tetrahydrochloride (DAB) staining. In this chapter, methods for determining total ROS and lipid peroxidation assay, histochemical staining techniques for superoxide and H(2)O(2) molecules are described.

347 citations

Journal ArticleDOI
TL;DR: The hypothesis that insulin and IGF-I may have direct local effects on bovine ovarian function, and that these effects are influenced by dose and size of follicle, is supported.
Abstract: The objectives of the present studies were to determine the effect of insulin, insulin-like growth factor I (IGF-I), testosterone, and FSH on proliferation, progesterone production, and(or) estradiol production of bovine granulosa cells. In addition, existence of IGF-I mRNA in granulosa cells and in vitro IGF-I production by granulosa cells were assessed. Cells from small (1 to 5 mm) and large (> or = 8 mm) follicles were collected from cattle and cultured for either 3 or 4 d. When cells from small follicles were cultured, insulin (.1 to 10 micrograms/mL) and IGF-I (100 to 400 ng/mL) increased (P or = 5 micrograms/mL) had no effect on estradiol production by cells from small and large follicles. Granulosa cells contained four IGF-I mRNA transcripts and produced IGF-I in vitro. These results support the hypothesis that insulin and IGF-I may have direct local effects on bovine ovarian function, and that these effects are influenced by dose and size of follicle.

347 citations

Journal ArticleDOI
TL;DR: In this paper, four studies examined correlates of loneliness in order to explore explanations for the persistence of loneliness among college students, including self-report and attitude scales, ratings of others following dyadic interactions, and self and other ratings at two points during an extended period of group interactions.
Abstract: Four studies (total n= 469) examined correlates of loneliness in order to explore explanations for the persistence of loneliness among college students. Self-report and attitude scales, ratings of others following dyadic interactions, and self and other ratings at two points during an extended period of group interactions indicated that lonely students (a) rated themselves more negatively and reported deficits in social skills and self-concept, (b) rated specific others and people-in-general more negatively and were more alienated and externalized, (c) expected others to rate them negatively, but (d) in general were not differentially rated by others except in the initial phase of group interactions and by lonely others following dyadic interactions. Results suggested that loneliness may be perpetuated by its cognitive and affective concomitants, with some evidence for gender differences, whereas inconclusive evidence was found regarding responses of others to the lonely person.

347 citations

Journal ArticleDOI
TL;DR: This paper examined the constructs of entrepreneurial orientation (EO) versus small business orientation (SBO), their impact on small business performance, and whether these effects are moderated by longevity, and found that the structural paths connecting EO and SBO to performance are not the same in these groups: for the younger group, EO significantly predicts performance while for the older group, only SBO significantly predicted performance.
Abstract: This study examines the constructs of entrepreneurial orientation (EO) versus small business orientation (SBO), their impact on small business performance, and whether these effects are moderated by longevity. A sample of 267 small business owners from 11 small–medium downtowns was used in structural equation modeling (SEM) testing of the measurement, structural and moderation hypotheses. The measurement confirmatory factor analyses models of the two constructs revealed that EO and SBO are unique constructs. Then a structural model predicting performance was tested. Finally, a two-group model split on “below 11 years” versus “11+ years” demonstrated that the structural paths connecting EO and SBO to performance are not the same in these groups: for the younger group, only EO significantly predicts performance while for the older group, only SBO significantly predicts performance.

347 citations


Authors

Showing all 18403 results

NameH-indexPapersCitations
Gerald I. Shulman164579109520
James M. Tiedje150688102287
Robert J. Sternberg149106689193
Josh Moss139101989255
Brad Abbott137156698604
Itsuo Nakano135153997905
Luis M. Liz-Marzán13261661684
Flera Rizatdinova130124289525
Bernd Stelzer129120981931
Alexander Khanov129121987089
Dugan O'Neil128100080700
Michel Vetterli12890176064
Josu Cantero12684673616
Nicholas A. Kotov12357455210
Wei Chen122194689460
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202336
2022254
20211,902
20201,780
20191,633
20181,529