Results 71 to 80 of about 1,873,571 (345)
Design and Simulation of Bionic Coupling PDC Cutter
Shiyou jixie, 2021 In order to solve the problems of PDC bit such as low working efficiency, easy stratification of diamond and hard alloy and bit balling formed by delayed discharge of rock fragment, the structure of polycrystalline diamond-hard alloy interface and the ...
吴泽兵, 席凯凯, 王杰, 郭禹伦
doaj
Apparatus and method to pulverize rock using a superconducting electromagnetic linear motor [PDF]
, 2009 A rock pulverizer device based on a superconducting linear motor. The superconducting electromagnetic rock pulverizer accelerates a projectile via a superconducting linear motor and directs the projectile at high speed toward a rock structure that is to ...
Ignatiev, Alex
core +1 more source
‘Put on your boots and Harrington!’: The ordinariness of 1970s UK punk dress [PDF]
, 2018 In 2013, the Metropolitan Museum hosted an exhibition of punk-inspired fashion entitled Punk: Chaos to Couture. The exhibition emphasized the ‘spectacular’ elements of the subculture, reflecting a narrative that dominates accounts of punk dress, whereby ...
Weiner, Nathaniel
core +3 more sources
Advanced Functional Materials, EarlyView.The ultrahard teeth of mollusks that feed on rocky substrates contain a wear‐resistant coating on their surfaces consisting of densely packed mesocrystalline magnetic nanoparticles within an organic matrix. These coatings display significant hardness and toughness through their highly controlled mesocrystalline architectures.
Taifeng Wang +7 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Fe and P co‐doped Co9S8 nanocorals (Fe, P‐Co9S8) are successfully synthesized by a heteroatom engineering strategy, which exhibit outstanding bifunctional electrocatalytic performance for both the hydrogen evolution reaction (HER) and hydrazine oxidation reaction (HzOR).
Yuying Meng +8 more
wiley +1 more source
From the mountains to the prairies and beyond the pale : American yodeling on early recordings [PDF]
, 2013 This sound review surveys yodeling in North American popular music, beginning with some of the earliest recordings on which it is featured. In order to better contextualize the recordings, I will also mention a few examples of sheet music with yodeling ...
Wise, T
core +1 more source
BuildingsPDC (polycrystalline diamond compact) drill bits are widely employed for rock-breaking in many industries like underground engineering and building constructions. The cutter layout would directly affect the overall performance of the drill bits.
Jian Huang +4 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.Permanent magnets derive their extraordinary strength from deep, universal electronic‐structure principles that control magnetization, anisotropy, and intrinsic performance. This work uncovers those governing rules, examines modern modeling and AI‐driven discovery methods, identifies critical bottlenecks, and reveals electronic fingerprints shared ...
Prashant Singh
wiley +1 more source
Rock breaking methods to replace blasting
IOP Conference Series: Materials Science and Engineering, 2018 The method of breaking rock by blasting has a high efficiency and the cost is relatively low, but the associated vibration, flyrock, production of toxic gases since the 1970's, the Western developed countries began to study the safety of breaking rock. This paper introduces different methods and their progress to safely break rock.
Huisheng Zhou, Xinghua Xie, Yuqing Feng
openaire +1 more source
Outbreak of Fatal Childhood Lead Poisoning Related to Artisanal Gold Mining in Northwestern Nigeria, 2010. [PDF]
, 2011 Background: In May 2010, a team of national and international organizations was assembled to investigate children's deaths due to lead poisoning in villages in northwestern Nigeria.
Abdullahi M. Bashir +18 more
core +2 more sources