Results 31 to 40 of about 9,563 (223)

SE PUBLICAR É PRECISO, AVALIAR TAMBÉM É! [PDF]

Revista de Administração de Empresas, 2018
O tema “revisão de artigos” é relevante e faz parte do cotidiano de todo pesquisador. Entretanto, a minha experiência como editor e revisor em periódicos brasileiros e internacionais torna evidente que o comprometimento dos pesquisadores na função de revisores, em geral, é muito menor do que quando estão na posição de autores.
openaire   +2 more sources

Synergy of Strength and Plasticity in Extruded VZ91K Magnesium Alloy Achieved by Constructing Bimodal Grain Structure via Suppression of PSN‐DRX

Rare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Bimodal grain structure (BGS) demonstrates significant potential in synergistically optimizing the strength and plasticity of magnesium alloys. Acquiring the desired BGS consequently became a critical challenge. This study took the Mg‐9Gd‐1Zn‐0.5Zr (wt%, VZ91K) alloy as its subject. From the perspective of BGS formation mechanisms, it suggests
Shuai Yuan, Xiaohuan Pan, Tianhao Wu, Wenjun Ci, Baodong Shi, Xianhua Chen   +5 more
wiley   +1 more source

Etnografia é, etnografia não é

Ilha Revista de Antropologia, 2017
Usando uma noção de "digital" como uma de suas metáforas principais, uma versão do termo que se apoia na discussão de Kara Keeling sobre o "humanismo digital", este texto argumenta que há algo sobre as não-linearidades que definem a diferença da digitalidade que pode nos ajudar a pensar sobre recalibragens no próprio projeto etnográfico.
Araujo, F. N., Jackson, John L.
openaire   +2 more sources

Thermite‐Synthesized Fe–Ti–Al–Mg High‐Entropy Intermetallic Compound for Efficient Azo Dye Degradation

Rare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Most high‐entropy alloys (HEAs) tailored for contaminant degradation suffer from complex fabrication processes and high‐cost alloy design. Furthermore, low‐cost active elements such as Fe and Mg cannot be readily alloyed into HEAs via conventional routes.
Jiajia Si, Qing Liu, Hongjunfei Liu, Hengwei Luan, Guangqing Xu, Kefu Yao   +5 more
wiley   +1 more source

“Agro é tech, agro é pop, agro é tudo”?

Revista Tamoios
O objetivo deste artigo é apresentar um panorama dos conflitos pela água produzidos e intensificados pelo agronegócio em Minas Gerais entre os anos de 2002 e 2022, a partir do aporte teórico-metodológico da Ecologia Política. Para tanto, foi desenvolvida uma pesquisa qualitativa, de caráter descritivo.
José Vitor Palhares dos Santos, Alexandre de Pádua Carrieri, Gustavo dos Santos Miranda de Avelar   +2 more
openaire   +1 more source

Dehydrogenation Thermodynamic and Kinetic Challenges of Mg‐Ni‐Based Alloy Hydrides

Rare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Solid‐state hydrogen storage stands as a pivotal, safe, and efficient solution for the future hydrogen economy. Among diverse hydrogen storage systems, Mg‐Ni‐based alloy hydrides are recognized as cornerstone materials. However, their practical application is hindered by two core challenges: the high thermodynamic stability of the hydride ...
Jinglan He, Jie Tian, Xiaojiang Hou, Yuyang Zhao, Wenfeng Li, Bolong Huang, Hu Liu   +6 more
wiley   +1 more source

Achieving Superior Strength‐Ductility Synergy in Bionic Magnesium‐Iron Composites by Topological Optimization

Rare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Magnesium (Mg)‐based composites are regarded as promising lightweight materials with significant potential for structural applications. The structure–property relationships of bionic Mg‐based composites remain unclear. Herein, three honeycomb‐like Mg‐Fe composites are fabricated to uncover the underlying strengthening mechanisms.
Fan Zhang, Hui Fu, Jiahan Liu, Yudong Chen, Qiuming Peng, Tao Zhang   +5 more
wiley   +1 more source

Multiobjective Optimization‐Driven Design of Novel Zn Alloys Exhibiting Synergistic Enhancement of Strength and Ductility via NSGA‐III

Rare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT With excellent castability and dimensional stability, Zn alloys are widely used in the automotive and electronic industries. However, the inherent trade‐off between strength and ductility remains a key bottleneck limiting their application in high‐performance fields.
Jianxing Zhou, Ran Cui, Yaxuan Shen, Chenfeng Pan, Ka Chun Chan, Yuk Lun Chan, Yanwei Chen, Wei Jian, Hainan Wang, Qinhao Zhang, Xinkun Suo, Lu Ren   +11 more
wiley   +1 more source

Elastic Framework Driven Mg2+ Autocapture and Autocatalysis: Mechanistic Origin of Fast Hydrogen Release in 2LiBH4–MgH2

Rare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT The protracted incubation time has long been the Achilles' heel of the promising 2LiBH4–MgH2 hydrogen storage system. Instead of the usual route‐creating heterogeneous nucleation sites to hasten MgB2 formation, we shortened both de‐ and re‐hydrogenation incubation periods by steering the Mg transformation itself.
Kai Jia, Fuying Wu, Beibei Xiao, Ting Bian, Petr Senin, Daifen Chen, Liuting Zhang   +6 more
wiley   +1 more source

水质中钙、镁和硬度的在线监测

Gongye shui chuli, 1998
对水质中钙、镁和硬度的在线监测方法进行了研究.利用稳定性好、灵敏度高的偶氮氯膦Ⅲ作显色剂,在pH70时,加入EGTA掩蔽钙,测定镁;在pH为25,掩蔽镁的干扰,测定钙,在线分析时,采用混合分析流程,加三通分流消除气泡干扰,测定数据稳定可靠,镁的测试范围1×10-3～48×10-3mmol/L,钙的测试范围1×10-3～50×10-3mmol/L,钙镁的检测限05×10-3mmol/L,该方法开发成在线仪器,可单独测定钙、镁,又可根据水样得到水质硬度,具有较好的实用性.
杨铸, 孙原
doaj   +2 more sources