Results 51 to 60 of about 623,482 (168)

Reconstructing Rural Settlements from a Living Space Perspective: Evidence from the Karst Mountainous Areas of Southwest China

Land
Rural settlements serve as the core spatial carriers of rural living space, and their spatial evolution and functional transformation reflect the dynamic restructuring of human–land relationships.
Qiuyu Zou, Xuesong Zhang, Jianwei Sun, Xiaowen Zhou, Hongjie Peng   +4 more
doaj   +1 more source

Numerical analysis of lifted hydrogen flame

MATEC Web of Conferences, 2018
A numerical analysis of a turbulent lifted H2/N2 flame is presented. As combustion mechanisms, a large spectrum is considered including single-step and two-step, as well as detailed mechanisms.
Iqbal Sohail, Pfeiffelmann Björn, Benim Ali Cemal, Joos Franz   +3 more
doaj   +1 more source

The effect of voltage on accuracy in electrochemical micromachining under two-tone sinusoidal signal

Electrochemistry Communications
Electrochemical micromachining (ECMM) is a non-traditional technology in the field of machining, which has excellent machining quality. Ultra short pulse power supply is widely used in electrochemical micro machining, and shortening the pulse width is ...
Xin Wang, JianChao Xiong, JiPeng Wang, Xi Chen   +3 more
doaj   +1 more source

Straw and Green Manure Return Can Improve Soil Fertility and Rice Yield in Long-Term Cultivation Paddy Fields with High Initial Organic Matter Content

Plants
Returning straw and green manure to the field is a vital agronomic practice for improving crop yields and ensuring food security. However, the existing research primarily focuses on drylands and low-fertility paddy fields.
Hailin Zhang, Long Chen, Yongsheng Wang, Mengyi Xu, Weiwen Qiu, Wei Liu, Tingyu Wang, Shenglong Li, Yuanhang Fei, Muxing Liu, Hanjiang Nie, Qi Li, Xin Ni, Jun Yi   +13 more
doaj   +1 more source

The evolution of animal-based dietary structure has contributed to the increase of healthcare expenditures in China

Humanities & Social Sciences Communications
The trends of diversified diets in China have generated a growing number of nutritional health problems, and healthcare investment is bearing a large burden from the diets, hindering the economic progress of the country and its residents toward affluence.
Yuanyuan Zhu, Yan Zhang, Xiaohua Zhu, Yuan Luo, ZhenFa Tu   +4 more
doaj   +1 more source

Research on the Coupling and Coordination of Land Ecological Security and High-Quality Agricultural Development in the Han River Basin

Land
This study aims to investigate the coupling and harmonization between land ecological security (LES) and high-quality agricultural development (HAD) in the Han River Basin (HRB), China, with the objective of promoting harmonious coexistence between ...
Yuelong Su, Yucheng Liu, Yong Zhou, Jiakang Liu   +3 more
doaj   +1 more source

CFD simulation of impeller shape effect on the solid cloud volume in the solid and liquid stirred vessel

Scientific Reports
Stirred vessels are considered as the essential equipment in chemical and process industries. This research aims to simulate the impact of 33 distinct impeller designs on the mixing quality of solid–liquid stirred vessels in terms of solid cloud volume ...
Amir Heidari, Abolfazl Risheh, Zahra Mehdiabadi   +2 more
doaj   +1 more source

The Impact of Urban Labor Skill Structure on Industrial Evolution in China and Its Heterogeneity from the Perspective of Cross-Relatedness

Redai dili
Industry and occupation are closely interwoven. Focusing solely on industrial structure cannot adequately address regional development challenges. Multifactor cross-relatedness provides a theoretical foundation for understanding the interplay between ...
Zhou Xiaoqi, Ao Rongjun, Chen Jing, Hou Chunguang   +3 more
doaj   +1 more source

Assessment of ecosystem health and driving forces in response to landscape pattern dynamics: the Shibing Karst world natural heritage site case study

Heritage Science
The Shibing Karst constitutes a pivotal component of the "South China Karst," and its ecosystem health integrity crucially influences the Outstanding Universal Value (OUV) of the corresponding Natural World Heritage (NWH).
Lixiang He, Juan Zhang, Bin Yu, Mengshan Hu, Zihao Zhang   +4 more
doaj   +1 more source

Aerodynamic Optimization of Airfoil Profiles for Small Horizontal Axis Wind Turbines

Computation, 2018
The purpose of this study is the development of an automated two-dimensional airfoil shape optimization procedure for small horizontal axis wind turbines (HAWT), with an emphasis on high thrust and aerodynamically stable performance.
Ali Cemal Benim, Michael Diederich, Björn Pfeiffelmann   +2 more
doaj   +1 more source