Institution
University of Arkansas
Education•Fayetteville, Arkansas, United States•
About: University of Arkansas is a education organization based out in Fayetteville, Arkansas, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 17225 authors who have published 33329 publications receiving 941102 citations. The organization is also known as: Arkansas & UA.
Topics: Population, Poison control, Quantum dot, Broiler, Supply chain
Papers published on a yearly basis
Papers
More filters
••
TL;DR: This paper extends the guidelines of Venkatesh et al. (2013) for mixed-methods research by identifying and integrating variations in mixed- methods research and develops a decision tree to map the flow and relationship among the design strategies.
Abstract: The objective of this paper is to extend the guidelines of Venkatesh et al. (2013) for mixed methods research by identifying and integrating variations in mixed methods research. By taking into account 14 properties of mixed methods research (e.g., purposes, research questions, epistemological assumptions), our guidelines demonstrate how researchers can flexibly identify the existing variations in mixed methods research and proceed accordingly with a study design that suits their needs. To make the guidelines actionable for various situations and issues that researchers could encounter, we develop a decision tree to map the flow and relationship among the design strategies. We also provide an in-depth illustration of one possible type of mixed methods research in information systems and discuss how to develop and validate meta-inferences as the outcomes of such a study.
309 citations
••
TL;DR: The copper complex of histidine has been found to increase the secretion of luteinizing hormone-releasing hormone (LH-RH) from granules of the median eminence, consistent with the newly found role for copper in synthesis of neuroendocrine peptides.
Abstract: Publisher Summary This chapter discusses copper complexes that offer a physiological approach to the treatment of chronic diseases. Copper is recognized as an essential metalloelement just as sodium, potassium, magnesium, calcium, iron, zinc, chromium, vanadium, and manganese. Just as essential amino acids, essential fatty acids and essential cofactors (vitamins), essential metalloelements are required for normal metabolic processes but cannot be synthesized de novo, and daily dietary intake and absorption are required. The adult body contains between 1.4 mg (22 pmol) and 2.1 mg (33 pmol) of copper per kilogram of body weight while the infant body contains three times this amount, consistent with the fact that infant metabolic needs are that much greater than those of adults. The essentiality of copper is now understood as being based upon its recognized need for activation of copper-dependent enzymes. Complexed forms of copper also facilitate absorption, tissue distribution, and tissue utilization. In the nondisease state, these forms of copper account for the physiologic regulation of copper-dependent homeostatic processes. Consistent with the newly found role for copper in synthesis of neuroendocrine peptides, the copper complex of histidine has been found to increase the secretion of luteinizing hormone-releasing hormone (LH-RH) from granules of the median eminence.
309 citations
••
TL;DR: An equivalent electrical circuit, consisting of double layer capacitors, a dielectric capacitor, and a medium resistor, was introduced and used for interpreting the change in impedance during bacterial growth, and it had effect on the impedance measurement.
306 citations
••
University of Paris-Sud1, University of Rouen2, University of Arkansas3, Paris Diderot University4, University of New South Wales5, École Centrale Paris6, Moscow State University7, Russian Academy of Sciences8, University of South Florida9, Xi'an Jiaotong University10, Moscow Institute of Physics and Technology11
TL;DR: It is revealed that strain progressively drives the average spin angle from in-plane to out-of-plane, a property used to tune the exchange bias and giant-magnetoresistive response of spin valves.
Abstract: Multiferroics are compounds that show ferroelectricity and magnetism. BiFeO3, by far the most studied, has outstanding ferroelectric properties, a cycloidal magnetic order in the bulk, and many unexpected virtues such as conductive domain walls or a low bandgap of interest for photovoltaics. Although this flurry of properties makes BiFeO3 a paradigmatic multifunctional material, most are related to its ferroelectric character, and its other ferroic property--antiferromagnetism--has not been investigated extensively, especially in thin films. Here we bring insight into the rich spin physics of BiFeO3 in a detailed study of the static and dynamic magnetic response of strain-engineered films. Using Mossbauer and Raman spectroscopies combined with Landau-Ginzburg theory and effective Hamiltonian calculations, we show that the bulk-like cycloidal spin modulation that exists at low compressive strain is driven towards pseudo-collinear antiferromagnetism at high strain, both tensile and compressive. For moderate tensile strain we also predict and observe indications of a new cycloid. Accordingly, we find that the magnonic response is entirely modified, with low-energy magnon modes being suppressed as strain increases. Finally, we reveal that strain progressively drives the average spin angle from in-plane to out-of-plane, a property we use to tune the exchange bias and giant-magnetoresistive response of spin valves.
305 citations
••
TL;DR: The total phenolics and antioxidant activities of fenugreek, green tea, black tea, grape seed, ginger, rosemary, gotu kola, and ginkgo extracts, vitamin E, and tert-butylhydroquinone, were determined.
Abstract: The total phenolics and antioxidant activities of fenugreek, green tea, black tea, grape seed, ginger, rosemary, gotu kola, and ginkgo extracts, vitamin E, and tert-butylhydroquinone, were determined. Grape seed and green tea were analyzed for their phenolic constituents using high-performance liquid chromatography. The total phenolics of the plant extracts, determined by the Folin-Ciocalteu method, ranged from 24.8 to 92.5 mg of chlorogenic acid equivalent/g dry material. The antioxidant activities of methanolic extracts determined by conjugated diene measurement of methyl linoleate were 3.4-86.3%. The antioxidant activity of the extracts using chicken fat by an oxidative stability instrument (4.6-10.2 h of induction time) followed a similar trend in antioxidant activity as determined by the Folin-Ciocalteu method. Seven phenolics in grape seed and green tea extracts were identified that ranged from 15.38 to 1158.49 and 18.3 to 1087.02 mg/100 g of extract, respectively. Plant extracts such as green tea and grape seed extracts can be used to retard lipid oxidation in a variety of food products.
305 citations
Authors
Showing all 17387 results
Name | H-index | Papers | Citations |
---|---|---|---|
Robert M. Califf | 196 | 1561 | 167961 |
Hugh A. Sampson | 147 | 816 | 76492 |
Stephen Boyd | 138 | 822 | 151205 |
Nikhil C. Munshi | 134 | 906 | 67349 |
Jian-Guo Bian | 128 | 1219 | 80964 |
Bart Barlogie | 126 | 779 | 57803 |
Robert R. Wolfe | 124 | 566 | 54000 |
Daniel B. Mark | 124 | 576 | 78385 |
E. Magnus Ohman | 124 | 622 | 68976 |
Benoît Roux | 120 | 493 | 62215 |
Robert C. Haddon | 112 | 577 | 52712 |
Rodney J. Bartlett | 109 | 700 | 56154 |
Baoshan Xing | 109 | 823 | 48944 |
Gareth J. Morgan | 109 | 1019 | 52957 |
Josep Dalmau | 108 | 568 | 49331 |