Results 61 to 70 of about 1,631,931 (302)

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

Advanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel, Shriram Ramanathan, Ronald P. Jenkins, Michael J. Carter   +3 more
wiley   +1 more source

Study on Spatial Distribution Dispersion Evaluation and Driving Forces of Rural Settlements in the Yellow River Basin

Land
The spatial distribution pattern of rural settlements in the Yellow River Basin is scattered and numerous. It is of great significance to study the discrete distribution of rural settlements for achieving high-quality development and promoting rural ...
Heying Li, Jianchen Zhang, Yamin Shan, Guangxia Wang, Qin Tian, Jiayao Wang, Huiling Ma   +6 more
doaj   +1 more source

Spatiotemporal evolution and multi-scenario prediction of habitat quality in the Yellow River Basin

Frontiers in Ecology and Evolution, 2023
IntroductionThe Yellow River Basin (YRB) is not only a vital area for maintaining ecological security but also a key area for China’s economic and social development.
Yanglong Chen, Yanglong Chen, Yanglong Chen, Yanglong Chen, Zhilin He, Zhilin He, Zhilin He, Zhilin He, Tianming Yue, Tianming Yue, Tianming Yue, Tianming Yue, Weichen Mu, Weichen Mu, Weichen Mu, Weichen Mu, Fen Qin, Fen Qin, Fen Qin, Fen Qin   +19 more
doaj   +1 more source

Ferroelectric Devices for In‐Memory and In‐Sensor Computing

Advanced Science, EarlyView.
Inspired by biological systems, in‐memory and in‐sensor computing overcome von Neumann bottlenecks. Ferroelectric devices can mimic synaptic functions and sense stimuli like light or force, therefore are ideal for these paradigms. This review introduces the ferroelectric devices applied for in‐memory and in‐sensor computing, covering their structures ...
Hong Fang, Ronghuan Xie, Qiang Cao, Shishen Yan, Xiaolin Wang, Limei Zheng   +5 more
wiley   +1 more source

Soil Aggregate-Associated Organic Carbon Cascading Process and Priming Mechanism Affected by Tillage and Organic Amendments

Agronomy
Clarifying SOC sequestration via physical and microbial processes is key for improving farmland fertility, yet the relative contributions of agronomic practices to carbon fractions and aggregate sizes remain unclear.
Zhanhui Zhao, Congzhi Zhang, Nan Zhang, Zhan Liu, Chunyang Lu   +4 more
doaj   +1 more source

Effect of Population Migration and Socioeconomic Factors on the COVID-19 Epidemic at County Level in Guangdong, China

Frontiers in Environmental Science, 2022
Coronavirus disease 2019 (COVID-19) has become a major public health concern worldwide. In this study, we aimed to analyze spatial clusters of the COVID-19 epidemic and explore the effects of population emigration and socioeconomic factors on the ...
Jianhui Xu, Yingbin Deng, Ji Yang, Wumeng Huang, Yingwei Yan, Yingwei Yan, Yichun Xie, Yong Li, Wenlong Jing   +8 more
doaj   +1 more source

Unraveling Bone‐Skin Crosstalk Enables miRNA Nanoformulation for Cutaneous Neurovascular Reconstruction in Diabetic Mice

Advanced Science, EarlyView.
This study unravels that bone fracture accelerates diabetic wound healing by releasing exosomal microRNA (miR‐130b‐3p). To mimic this bone‐skin crosstalk, we engineered a self‐assembling agomir‐130b‐3p nanocomplex. Delivered via a photocrosslinkable hydrogel, this bio‐inspired therapy provides sustained localized agomir release.
Tao Shen, Hongdou Shen, Weiyue Wu, Zhuoying Jiang, Bin Liu, Yansi Xian, Rui Peng, An Yan, Yu Ben, Yong Shi, Xiang Chen, Baosheng Guo, Qing Jiang, Weijun Wang, Pingqiang Cai   +14 more
wiley   +1 more source

Spatio-temporal analysis and optimization of land use/cover change

, 2017
This book proposes a method to solve land use problems, and has made some significant contributions to the land use analysis and optimization study fields.
Huang, Bo, Zhang, Wenting, Liu, Biao
core   +1 more source

Polydopamine Nanoparticle‐Mediated Precise Near‐Infrared Optical Stimulation for Cognitive Enhancement

Advanced Science, EarlyView.
Polydopamine nanoparticles enable a precise, non‐genetic, and transcranial neuromodulation strategy via near‐infrared photothermal stimulation. By activating TRPV1 channels, this approach specifically enhances hippocampal gamma oscillations, thereby rescuing spatial memory deficits in models of perioperative neurocognitive disorder.
Yan‐Bo Zhou, Qiong Xue, Su‐Xuan Hou, Ke‐Yao Zhang, Wei‐Tong Pan, Ting‐Ting Zeng, Yu‐Ge Wang, Daqing Ma, Chenguang Zhao, Pan‐Miao Liu, Jian‐Jun Yang   +10 more
wiley   +1 more source

Yield Prediction of Winter Wheat at Different Growth Stages Based on Machine Learning

Agronomy
Accurate and timely prediction of crop yields is crucial for ensuring food security and promoting sustainable agricultural practices. This study developed a winter wheat yield prediction model using machine learning techniques, incorporating remote ...
Zhengfang Lou, Xiaoping Lu, Siyi Li
doaj   +1 more source