Results 31 to 40 of about 89,189 (222)

Impactos do Programa Bolsa Floresta: uma avaliação preliminar (Cadernos de Sustentabilidade) [PDF]

, 2014
Este estudo trata do Programa Bolsa Floresta (PBF), um dos maiores programas de Pagamento por Serviços Ambientais (PSA) do mundo, com mais de 35 mil pessoas atendidas em 15 Unidades de Conservação Estaduais (UCs) do Amazonas.
Afrânio Soares, João Tezza, Suelen Marostica, Valcéia Solidade, Victor Salviati, Virgílio Viana   +5 more
core  

Tunable Negative Thermal Expansion in Fe/Cr‐Substituted Nd2Co17 Compounds via Magnetoelastic Coupling

Advanced Science, EarlyView.
This study achieves anisotropic thermal expansion tuning in Nd2(Co1‐xFex)17‐yCry compounds via a magnetoelastic strategy. Variable‐temperature synchrotron X‐ray diffraction reveals that increased Fe content induces switchable lattice responses. Compositional control reduces the volume expansion coefficient αV by 20% (x═0.7) and modulates TC (442–625 K),
Jiayuan Li, Chenfei Qv, Haoran Tu, Qinfen Gu, Wayne D. Hutchison, Stewart J. Campbell, Zhenxiang Cheng, Wenquan Wang, Jianli Wang   +8 more
wiley   +1 more source

Geo-engineering characterization of mining material: A case study in Yogyakarta, Indonesia

Journal of Degraded and Mining Lands Management
The extraction and processing of aggregates in quarrying operations leads to environmental degradation through various engineering methods. This study investigated the geo-engineering properties of tertiary volcanic rocks mined from various sites in ...
Wawan Budianta, I Wayan Warmada, Ohta Hideki, Jiro Takemura   +3 more
doaj   +1 more source

Campos de Cima da Serra e o turismo no espaço rural

Turismo: Visão e Ação, 2015
A região dos Campos de Cima da Serra está situada no nordeste do Estado Rio Grande do Sul, Brasil. Ao longo de décadas, o desenvolvimento do espaço rural pautou-se majoritariamente em atividades agrícolas, contudo, tais atividades, com o passar dos anos,
Eurico de Oliveira Santos, Magda M. Spindler, Andiara S. Valentini, Lisiane Scherer   +3 more
doaj   +1 more source

Research progress in animal models of dry eye disease: Types, mechanisms, and application prospects

Animal Models and Experimental Medicine, EarlyView.
Pivotal multifactorial animal models for translational dry eye disease research. Abstract Dry eye disease (DED) is a prevalent and complex multifactorial ocular surface disorder, leading to significant visual discomfort and diminished quality of life.
Jinshen Liu, Jiaqi Chen, Zhonghui Li, Jiamin Zhou, Hui Zhang, Yujia Yu, Feng Cheng, Jie Bao, Chunhan Feng, Xiangqu Yu, Zhao Xia, Rao Ding, Xiang Li   +12 more
wiley   +1 more source

Analisis Kuat Tekan Bebas Tanah Lempung Distabilisasi Pasir dan Semen [PDF]

, 2016
The purpose of this study was to determine how much additional sand and cement on clay soil stabilization Bukit Rawi to the pavement. The results showed that after the addition of 16% sand with cement 2% the value of UCS rose to 1.63 kg/cm2 of initial ...
Muda, A. (Anwar)
core  

An observationally-driven kinetic approach to coronal heating

, 2016
Coronal heating through the explosive release of magnetic energy remains an open problem in solar physics. Recent hydrodynamical models attempt an investigation by placing swarms of 'nanoflares' at random sites and times in modeled one-dimensional ...
Chintzoglou, G., Georgoulis, M., Isliker, H., Moraitis, K., Toutountzi, A., Vlahos, L.   +5 more
core   +1 more source

Study on the Fragmentation Characteristics and Dust Generation Mechanism of Coal Cutting by Pick

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT During underground excavation, coal dust generation threatens miners' health and damages ecosystems. Its generation is directly influenced by cutting pick performance and inherent coal properties. This study investigates the effects of coal properties and cutting parameters on coal fragmentation characteristics from a mesoscopic perspective ...
Shihang Li, Delong Li, Bohan Gao, Xingyue Chen, Hao Jin, Shuda Hu, Qiang Zhang, Wuping Peng, Ping Li, Jianping Li, Xuegang Wang   +10 more
wiley   +1 more source

Effect of confining pressure on fracture characteristics and mineralogical behavior of tight sandstone specimens after hydraulic fracturing

Deep Underground Science and Engineering, EarlyView.
Hydraulic fracturing in tight sandstone and fracture propagation characteristics using backscattered electron‐scanning electron microscope (BSE‐SEM) images. Abstract This study focuses on hydraulic fracturing experiments conducted under triaxial conditions on tight sandstone specimens from Shivpuri district, Madhya Pradesh, India.
Pankaj Rawat, Narendra Kumar Samadhiya
wiley   +1 more source

Rockburst prediction based on data preprocessing and hyperband‐RNN‐DNN

Deep Underground Science and Engineering, EarlyView.
A data preprocessing workflow is proposed to address challenges in rockburst data analysis. Coupled algorithms preprocess the data set, and hyperband optimization is used to enhance RNN performance. Results show that preprocessing improves accuracy, while dense layers enhance model stability and prediction performance.
Yong Fan, Chenxi Yin, Guangdong Yang, Shengyong Ding, Bin Tian   +4 more
wiley   +1 more source