Results 111 to 120 of about 95,125 (344)

Sealing evaluation of Liuzhuang UGS in Subei Basin [PDF]

open access: yesYouqicang pingjia yu kaifa
The evaluation of underground gas storage(UGS) tightness is a critical aspect of the construction and operation phases. The Liuzhuang UGS in the Subei Basin, characterized by a fault-controlled fault nose structure and edge water UGS, underwent a ...
ZHU Ziheng, REN Zhongxin, WANG Zhaozhou, GUO Shangtao, WANG Chaoguo, LIU Yujian, YANG Tao, WEI Bing
doaj   +1 more source

Tire/wheel concept [PDF]

open access: yes, 1981
A tire and wheel assembly is disclosed in which a low profile pneumatic tire (having sidewalls which deflect inwardly under load) and a wheel (having a rim featuring a narrow central channel and extended rim flanges) form the combination.
Harper, P. M., Sr.
core   +1 more source

Impact of Pre‐Oxidation Treatments on a Recycled MgO/Steel‐Composite as Carbon Free Anode in Aluminum‐Electrolysis Environments

open access: yesAdvanced Engineering Materials, EarlyView.
Cermets (60 vol.% AISI 316L stainless steel, 40 vol.% recycled MgO), intended for use in aluminum electrolysis, were pre‐oxidized in three furnaces with different heating technologies and subjected to a cryolite corrosion test. The different atmospheres influenced the formation of oxide layers, which in turn affected corrosion resistance and ...
Patricia Kaiser   +4 more
wiley   +1 more source

The Effect of Different Obturation Techniques on the Sealing Ability of Root Canal Filling Materials

open access: yesJournal of Pharmacy and Bioallied Sciences
Background: The performance of root canal filling materials in sealing is crucial for the effectiveness of endodontic procedures as it prevents the escape of microorganisms and guarantees the durability of the treatment.
Regula Sri Lakshmi   +5 more
doaj   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Building Solutions: Opportunities for Coloradans to Save Energy and Money Through Efficient Home Heating [PDF]

open access: yes, 2008
Proposes ways to improve home heating efficiency to reduce energy use and costs, describes the expected economic benefits to the state, and makes policy recommendations for raising efficiency standards and expanding weatherization assistance ...
Aaron Segel, Danny Katz, Travis Madsen
core  

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb   +6 more
wiley   +1 more source

Clinical Observation on Normal Saline of Tube-sealing Solution for Vein Permanent Needle

open access: yesHuli yanjiu, 1998
Selected 300 patients(times)received to vein permanent perfusion were divided randomly into 2 groups of normal saline and natrium heparin as tube-sealing solution respectively.Results showed that the effectiveness through tube was no difference between ...
梁燕, 王业钊, 李德群
doaj  

Sealing efficacy of various rubber dam barrier materials used for isolation procedures: A randomized controlled trial

open access: yesEndodontology
Aim: The aim of the study was to assess the sealing efficacy of three dam seal materials. Methods: Ninety participants were enrolled after obtaining consent.
Jaimini J. Patel   +5 more
doaj   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

open access: yesAdvanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich   +3 more
wiley   +1 more source

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