Results 91 to 100 of about 309,563 (194)

Radioisotopic labeling reveals inaccuracy of phosphorus use efficiency of ammonium phosphate fertilizers calculated by the difference method

open access: yesAgricultural & Environmental Letters
Management of phosphorus (P) inputs to agroecosystems is often evaluated by phosphorus use efficiency (PUE), but different calculation approaches may yield discrepancies in estimated PUE values. We evaluated PUE (i) indirectly calculated by difference in
Andrew J. Margenot   +2 more
doaj   +1 more source

Marijuana Regulation and Federalism [PDF]

open access: yes, 2017
[Excerpt] Federal law makes the cultivation and use of marijuana illegal for all purposes. Yet, over the past two decades, 28 states plus the District of Columbia have legalized marijuana for medicinal purposes, and eight states plus the District of ...
Greabe, John M.
core   +2 more sources

Design and Performance Analysis of Non-Coherent Detection Systems with Massive Receiver Arrays

open access: yes, 2016
Harvesting the gain of a large number of antennas in a mmWave band has mainly been relying on the costly operation of channel state information (CSI) acquisition and cumbersome phase shifters.
De Carvalho, Elisabeth   +3 more
core   +1 more source

Explaining Gender Differences in Unemployment with Micro Data on Flows in Post-Communist Economies [PDF]

open access: yes, 2002
Post-communist labor markets provide an interesting laboratory since unemployment rates grew from zero to double digits and gender differences began to vary greatly across these countries.
Lauerová, Jana Stefanová   +1 more
core  

Pues no se pudo... del todo

open access: yesCPU-e, Revista de Investigación Educativa, 2013
En este texto se exponen el desarrollo y las experiencias obtenidas durante la implementación de un proyecto denominado Sí se puede, Teocelo: promoción cultural y construcción local de ciudadanías, de dos años de duración. En él intervinieron principalmente la Universidad Veracruzana, la Red Iberoamericana para el Desarrollo Sustentable (Reddes) y el ...
Dr. Jorge Vaca Uribe   +1 more
openaire   +3 more sources

Puerarin, a key bioactive ingredient of Radix Puerariae, inhibits oxidative stress and protects against homocysteine-induced cardiac injury via PI3K/Akt/Nrf2/HO-1 signaling

open access: yesJournal of Agriculture and Food Research
Elevated plasma homocysteine (Hcy) levels are a major contributor to the risk factor for the developing cardiovascular diseases (CVDs). This study explored the protective efficacy of puerarin (Pue), a key bioactive ingredient derived from Radix Puerariae,
Shuang Jiang   +4 more
doaj   +1 more source

A novel multi-fold security framework for cognitive radio wireless ad-hoc networks [PDF]

open access: yes, 2012
Cognitive Radio (CR) Technology has emerged as a smart and intelligent technology to address the problem of spectrum scarcity and its under-utilization. CR nodes sense the environment for vacant channels, exchange control information, and agree upon free
Maple, Carsten   +2 more
core  

Micelles Loaded With Puerarin And Modified With Triphenylphosphonium Cation Possess Mitochondrial Targeting And Demonstrate Enhanced Protective Effect Against Isoprenaline-Induced H9c2 Cells Apoptosis

open access: yesInternational Journal of Nanomedicine, 2019
Wen-qun Li,1–3,* Jun-yong Wu,1–3,* Da-xiong Xiang,1–3 Shi-lin Luo,1–3 Xiong-bin Hu,1–3 Tian-tian Tang,1–3 Tao-li Sun,4 Xin-yi Liu1–3 1Department of Pharmacy, The Second Xiangya Hospital, Central South University,
Li W   +7 more
doaj  

¡Ay! Pues yo, trabajando en el gerundio

open access: yesBorealis – An International Journal of Hispanic Linguistics, 2012
<span style="font-size: 10.0pt; font-family: &quot;Times New Roman&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;;" lang="ES-TRAD">El uso del gerundio no perifr&aacute;stico en oraciones independientes, es decir no subordinadas a un predicado principal, ha sido descrito muy poco en la gram&aacute;tica del espa ...
openaire   +5 more sources

Effects of puerarin as a feed additive on the laying performance, egg quality, endocrine hormones, antioxidant capacity, and intestinal morphology of aged laying hens

open access: yesPoultry Science
: The aim of this study was to investigate the effects of puerarin (Pue), a phytoestrogen, on the production performance, egg quality, endocrine hormones, antioxidant capacity, and intestinal morphology in aged laying hens.
Xubin Du   +6 more
doaj   +1 more source

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