Results 71 to 80 of about 167,724 (304)

Cadmium plated steel caps seal anodized aluminum fittings [PDF]

, 1971
Cadmium prevents fracturing of hard anodic coating under torquing to system specification requirements, prevents galvanic coupling, and eliminates need for crush washers, which, though commonly used in industry, do not correct leakage problem experienced
Padden, J.
core   +1 more source

Laser Powder Bed Fusion of Alumina: Effects of Scanning Strategies on External and Internal Defects

Advanced Engineering Materials, EarlyView.
This study investigates how scanning strategies affect pure alumina in laser powder bed fusion. Linear 45° scanning yields uniform surfaces but high porosity, while the island‐concentric strategy provides higher density with through‐holes favorable for infiltration. Findings highlight pathways toward optimizing defect‐free alumina parts.
Mohamed Abdelmoula, Gökhan Küçüktürk, Duran Kaya, David Grossin, Christophe Tenailleau, Benjamin Duployer, Enrique Juste, Fabrice Petit   +7 more
wiley   +1 more source

Remediation of the Old Ecological Load in the Protected Area of the Morava River – Re-abandonment of the Oil and Gas Production Wells

Rudarsko-geološko-naftni Zbornik, 2015
The presence of the former oil and gas producing wells that are or can be improperly abandoned creates a possible environmental hazard in terms of contamination of the groundwater and soil in the present.
Petr Bujok, Martin Klempa, Vladimír Slivka, Michal Porzer, Igor Němec, Věra Šťastná, Eva Smejkalová, Jaroslav Zdvořák   +7 more
doaj   +1 more source

Geo-environmental mapping using physiographic analysis: constraints on the evaluation of land instability and groundwater pollution hazards in the Metropolitan District of Campinas, Brazil [PDF]

, 2010
Geo-environmental terrain assessments and territorial zoning are useful tools for the formulation and implementation of environmental management instruments (including policy-making, planning, and enforcement of statutory regulations).
A Cendrero, A Finlayson, A-X Zhu, A-X Zhu, AD Howard, AJ Fernandes, AJ Fernandes, Amelia Joao Fernandes, Claudio Jose Ferreira, CW Mitchell, EAC Abella, FA Akiwumi, FF Sabins Jr, G Câmara, G Câmara, H Schmidt, H Tamura, HTh Verstappen, ID Moore, John Canning Cripps, JSY Wang, LT Aller, LV Zuquette, Maria Jose Brollo, MR Bennett, Paulo Cesar Fernandes-da-Silva, PC Fernandes Da Silva, PC Fernandes Da Silva, PC Soares, R Latifovic, Ricardo Vedovello, RJ Pine, S Sahay, SE Hill, SF Thornton, T Harris, T Lillesand, TE Beaumont, X Shi, Z Nedovic-Budic   +39 more
core   +1 more source

Fractures and fracture dislocations [PDF]

The Dublin Journal of Medical Science, 1916
n ...
openaire   +1 more source

Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials

Advanced Engineering Materials, EarlyView.
Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai, Xinrui Sarah Niu, Zhao Qin   +2 more
wiley   +1 more source

Implementations of star evaluation management model in complex high water-cut gas field during its integrated development of geological engineering

Youqicang pingjia yu kaifa, 2021
Poor reserve quality, high water-cut and high investment cost have become the bottleneck of developing Dongsheng Gas Field located in Ordos Basin. In this way, the star evaluation management model is put forward to enhance its production performance.
LIU Xiaobo, ZHOU Yongyi, WANG Zhi, LEI Tao, WANG Xiang, YOU Qidong, CAO Tongsheng, CHEN Kui, LIU Tao, YU Yaonan   +9 more
doaj  

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

SELECTION OF THE OPTIMAL TECHNOLOGY TO PREVENT SAND PRODUCTION, TAKING INTO ACCOUNT ROCK DECONSOLIDATION IN THE BOTTOMHOLE FORMATION ZONE

Rudarsko-geološko-naftni Zbornik
This article presents studies on the selection of the best sand control option, technologically based on the application of the method of fixing the bottomhole part of the well system with polymerized proppant, which will prevent the destruction of the ...
Larisa Churikova, Samal Akhmetzhan, Gali Gumarov, Ainash Mukambetkaliyeva, Kumiskali Gubaidullin   +4 more
doaj   +1 more source

Volume fracturing technology of deep shale gas in southern Sichuan

Youqicang pingjia yu kaifa, 2021
Due to the deep buried depth（3 500～4 200 m）, high ground stress, high ground stress discrepancy（7 to 17 MPa）, low reservoir brittle（< 0.5）and the undeveloped natural fracture, the hydraulic fracture of Weirong deep shale gas face the problems of high ...
Wang Xingwen, Lin Yongmao, Miao Weijie
doaj