Results 91 to 100 of about 6,260,127 (301)

Evaluation of Two Satellite Surface Solar Radiation Products in the Urban Region in Beijing, China

open access: yesRemote Sensing
Surface solar radiation, as a primary energy source, plays a pivotal role in governing land–atmosphere interactions, thereby influencing radiative, hydrological, and land surface dynamics.
Lin Xu, Yuna Mao
doaj   +1 more source

Electric Field‐Induced Hole‐ and Electron‐Type Flat Bands in Twisted Double Bilayer Graphene

open access: yesAdvanced Electronic Materials, EarlyView.
The electronic structure of twisted double bilayer graphene is visualized using angle‐resolved photoemission spectroscopy with micrometer spatial resolution at twists of 3.1∘$^\circ$ and 6.0∘$^\circ$ as a function of gate voltage. Tunable hybridization effects and flat band formation occurs between valence and conduction band states due to a finite ...
Zhihao Jiang   +13 more
wiley   +1 more source

Green‐Synthesized Bi‐Doped PEI N‐GQDs Enabling Long‐Term Stable Silicon Heterojunction Photodetectors

open access: yesAdvanced Electronic Materials, EarlyView.
Green‐engineered BiNPs&PEI N‐GQDs enable dual‐emission p‐Si Schottky photodetectors with strong photoresponse, long‐term stability, and a simple scalable fabrication strategy, offering a promising route for sustainable optoelectronic and photosensing applications.
Zeynep Berktaş   +6 more
wiley   +1 more source

Columbia Region handbook

open access: yes, 1980
Presents a general overview of the Columbia Region, its organization and its people, and some basic information about the region's fish and wildlife and their management.This archived document is maintained by the State Library of Oregon as part of the ...

core  

Hemp Cultivation and Crop Diversification: Implications for Ecosystem Services in Kentucky

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT This study examines the ecosystem benefits of expanding hemp cultivation by assessing its impact on crop diversity. Using scenario‐based simulations and fixed‐effect panel regressions with county‐level data in Kentucky, we find that increased hemp acreage tends to enhance crop diversity, improving water quality and bird diversity.
Yunsun Park   +4 more
wiley   +1 more source

Urban land grabs in Africa? [PDF]

open access: yes, 2019
Africa is rapidly urbanising. New dynamics of investments and mobilities ensue the expansive urbanisation, generating transformative effects on the continents urban land and built environment.
Otsuki, K.   +3 more
core   +1 more source

Why do adolescent girls become pregnant? Contextual pathways to adolescent pregnancy in rural Tanzania: a mixed-methods study

open access: yesBMJ Open
Introduction Adolescent pregnancy remains a significant public health and social challenge in sub-Saharan Africa, including Tanzania. The study aimed to explore contextual reasons and determinants of adolescent pregnancy among girls using a mixed-methods
Sia E Msuya   +9 more
doaj   +1 more source

Chinese Trade Competition and Rural Mexican Migration

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT China's accession to the World Trade Organization in 2001 reshaped global trade, reducing U.S. demand for Mexican manufactured goods and weakening Mexico's manufacturing employment. This study estimates how this trade‐induced decline affected migration and employment decisions among rural Mexicans.
Zachariah Rutledge, Joaquin Mayorga
wiley   +1 more source

Tropical urban design in Australia

open access: yes, 2013
[Extract] At the expense of sounding clichéd, the tropics are 'different' to other places. Whether it is because of the heat, torrential rain or even cyclones, the tropical world presents a challenge and opportunity for urban designers. Many envy the '
Law, Lisa, Anderson, Allison
core   +1 more source

Rural Labor Supply and Economic Opportunities: Commuting, Migration, Tariffs, and Immigration

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT Some rural counties remain dependent on agricultural or manufacturing jobs, but an increasing proportion have diversified economics. Rural counties also differ in their abilities to commute to an urban market characterized by higher wages and labor productivity.
Peter F. Orazem, Mary C. Ahearn
wiley   +1 more source

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