Results 91 to 100 of about 23,045 (295)

Performance of dairy cows and calves in agro-pastoral production systems [PDF]

open access: yes, 2013
Seasonal changes in pasture quality and quantity and cattle management routines were examined on 10 farms in southwest Uganda in order to evaluate how these factors affected milk yield, live weight and body condition in cows and daily weight gain in ...
Johansson, Christina
core  

Solvent‐Mediated Reactivity Control of Lewis‐Paired Dopants as a Versatile Strategy for Tunable and Stable Doping of Organic Semiconductors

open access: yesAdvanced Materials, EarlyView.
Solvent‐mediated reactivity control of Lewis‐paired dopants enables highly efficient, finely tunable, and stable doping of organic semiconductors. The optimally doped semiconductor films exhibit superior thermoelectric performance and doping stability, feature delocalized polarons along structurally ordered polymer backbones, and outperform ...
Sang Beom Kim   +5 more
wiley   +1 more source

Livestock as insurance and social status. Evidence from reindeer herding in Norway [PDF]

open access: yes
The theory of livestock as a buffer stock predicts that agropastoralists facing substantial risks typically will use liquid assets, such as livestock, for self-insurance to smooth consumption.
Anders Skonhoft, Anne Borge Johannesen
core  

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

open access: yesAdvanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis   +19 more
wiley   +1 more source

A spatially explicit population model of stoloniferous N-fixing legumes in mixed pasture with grass

open access: yes, 1996
1 In a previous paper, we outlined the physiological prerequisites for population oscillations between a grass and a nitrogen-fixing legume, such as clover.
Parsons, A. J., Schwinning, S.
core   +1 more source

Thermodynamic Limits to Molecular Doping in Conjugated Polymers: A Perspective on Phase Behavior and Miscibility

open access: yesAdvanced Materials, EarlyView.
Molecular doping of conjugated polymers is fundamentally constrained by thermodynamic phase behavior. This Perspective reframes doping efficiency and stability in terms of miscibility limits, binodals, and solvus boundaries, highlighting the role of effective interaction parameters and charge transfer.
Somayeh Kashani   +10 more
wiley   +1 more source

Resistance to Overdoping Allows Over 2000 S cm−1 Conductivity in P(g3BTTT) With Anion‐Exchange Doping

open access: yesAdvanced Materials, EarlyView.
Anion‐exchange doping of conjugated polymers is an effective way to achieve high conductivities. Here, we report over 2000 S cm−1 electrical conductivity for doped P(g3BTTT). In addition, we show that P(g3BTTT) sustains exceptionally high doping levels without any drop in the charge mobility.
Basil Hunger   +14 more
wiley   +1 more source

Micronutrients limiting pasture production in Australia

open access: yes, 2019
Low levels of plant-available micronutrients were an inherent feature of many agricultural soils in Australia, mostly due to the prevalence of highly weathered soil parent materials.
Bell, R.W., Brennan, R.F., Penrose, B.
core   +1 more source

MICRO MINERAL DISTRIBUTION ON FIBER FRACTION OF FORAGES IN SOUTH SUMATRA, INDONESIA [PDF]

open access: yes, 2008
This study was conducted to evaluate the concentration of micro minerals (Zn, Fe, Mn, Cu and Se) of forages and their distribution in fiber fraction (Neutral Detergent Fiber/NDF and Acid Detergent Fiber/ADF) in South Sumatra during dry and rainy season.
Fariani, A
core  

Rethinking Charge Transport and Recombination in Donor‐Diluted Organic Solar Cells

open access: yesAdvanced Materials, EarlyView.
Organic solar cells with 1–45% PM6 content in Y12 were studied to link structure and charge dynamics to performance. The conductivity follows a 3D percolation model without a sharp threshold. Donor dilution preserves the photogeneration yield, but limits the fill factor due to transport resistance losses.
Chen Wang   +14 more
wiley   +1 more source

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