Results 91 to 100 of about 6,310 (207)

Qualitative identification of fentanyl and other synthetic opioids using ambient ionization high resolution time-of-flight mass spectrometry [PDF]

open access: yes, 2017
The Centers for Disease Control and Prevention deemed the increase in overdose fatalities, due to the use of opioids, an “opioid epidemic” in the United States. Heroin, fentanyl, and other synthetic opioids are commonly abused and are contributing to the
Moore, Amanda Marie
core  

How sensitive are various NN observables to changes in the $\pi NN$ coupling constant? [PDF]

open access: yes, 1999
The deuteron, NN analyzing powers A_y, and the singlet scattering length show great sensitivity to the $\pi NN$ coupling constant $g_\pi$. While the pp A_y data favor $g^2_\pi/4\pi\leq 13.6$, the np A_y data and the deuteron quadrupole moment imply $g^2_\
Machleidt, R.
core   +2 more sources

ANPP: Aplicabilidade na fase processual e retroatividade a fatos anteriores à Lei 13.964/2019

open access: yesBoletim IBCCRIM, 2023
Direito penal e processual penal. Agravo regimental em habeas corpus. Acordo de não persecução penal (art. 28-A do CPP). Retroatividade até o recebimento da denúncia. • A Lei nº 13.964/2019, no ponto em que institui o acordo de não persecução penal (ANPP), é considerada lei penal de natureza híbrida, admitindo conformação entre a retroatividade penal ...
Me. Anderson Bezerra Lopes   +1 more
openaire   +1 more source

Microbial functional diversity covaries with permafrost thaw-induced environmental heterogeneity in tundra soil. [PDF]

open access: yes, 2017
Permafrost soil in high latitude tundra is one of the largest terrestrial carbon (C) stocks and is highly sensitive to climate warming. Understanding microbial responses to warming-induced environmental changes is critical to evaluating their influences ...
Cole, James R   +17 more
core   +2 more sources

Spatial patterns and environmental constraints on ecosystem services at a catchment scale [PDF]

open access: yes, 2016
Improved understanding and prediction of the fundamental environmental controls on ecosystem service supply across the landscape will help to inform decisions made by policy makers and land-water managers.
Carter, Heather   +24 more
core   +3 more sources

Radiation use and understory aboveground net primary production in a temperate dryland

open access: yesEcosphere, Volume 16, Issue 12, December 2025.
Abstract We investigated the spatial and temporal variability of herbaceous radiation use efficiency (RUEh$$ {\mathrm{RUE}}_h $$) and herbaceous aboveground net primary production (ANPPh$$ {\mathrm{ANPP}}_h $$) of big sagebrush ecosystems in Wyoming's Upper Green River Basin.
Samuel Wilson   +3 more
wiley   +1 more source

Effects of Soil Moisture and Atmospheric Vapor Pressure Deficit on the Temporal Variability of Productivity in Eurasian Grasslands

open access: yesRemote Sensing
The grasslands in high-latitude areas are sensitive to climate warming and drought. However, the drought stress effect on the long-term variability of grassland productivity at the continental scale still hinders our understanding.
Tianyou Zhang   +4 more
doaj   +1 more source

Sustaining the Role of Marketing Strategies in Nigerian Electoral Politics [PDF]

open access: yes, 2010
This paper builds on recent studies which identified the roles of marketing strategies in politics as responsive leadership, mass mobilization, political branding, conflict management, promotion of democratic ideals.
Worlu, Rowland E.K.
core  

Rain-Use-Efficiency: What it Tells us about the Conflicting Sahel Greening and Sahelian Paradox [PDF]

open access: yes, 2014
Rain Use Efficiency (RUE), defined as Aboveground Net Primary Production (ANPP) divided by rainfall, is increasingly used to diagnose land degradation. Yet, the outcome of RUE monitoring has been much debated since opposite results were found about land ...
Albergel   +67 more
core   +3 more sources

Heatwaves leave a legacy on a dominant understory grass in longleaf pine savanna

open access: yesEcosphere, Volume 16, Issue 12, December 2025.
Abstract The frequency and intensity of extreme climatic events such as heatwaves are predicted to increase under continued climate change and rising atmospheric CO2. Degraded and fragmented ecosystems are at particular risk of being greatly impacted by such extreme events.
Kathryn J. Bloodworth   +23 more
wiley   +1 more source

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