Results 81 to 90 of about 173,910 (337)

Stress Analysis and Structural Optimization of NCS38 Gas-tight Drill Pipe Joint

Shiyou jixie, 2017
To meet the requirements of tougher drilling environment,a new gas-tight drill pipe joint NCS38 was designed on the basis of NC38 drill pipe joint.The new joint is designed with a special radial metal sealing structure and auxiliary torque shoulder.The ...
Yang Ruimeng, Lu Xiaoqin, Xu Liuqing, Liu Guanghui, Gao Lianxin   +4 more
doaj  

Effects of Snake-Bioinspired Surface Texture on the Finger-Sealing Performance under Varied Working Conditions [PDF]

, 2022
Linping Chen, Yanchao Zhang, Yahui Cui, Jie Wang, Mingfeng Wang   +4 more
openalex   +1 more source

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source

High speed, self-acting, face-contact shaft seal has low leakage and very low wear [PDF]

, 1972
Design adds gas thrust bearing to face of conventional face seal. Bearing lifts seal's carbon face out of contact after startup and establishes thin gas film between sealing surfaces.
Johnson, R. L., Ludwig, L. P., Zuk, J.
core   +1 more source

Lipid Nanoparticles for the Delivery of CRISPR/Cas9 Machinery to Enable Site‐Specific Integration of CFTR and Mutation‐Agnostic Disease Rescue

Advanced Functional Materials, EarlyView.
Lipid nanoparticles (LNPs) are optimized to co‐deliver Cas9‐encoding messenger RNA (mRNA), a single guide RNA (sgRNA) targeting the endogenous cystic fibrosis transmembrane conductance regulator (CFTR) gene, and homologous linear double‐stranded donor DNA (ldsDNA) templates encoding CFTR.
Ruth A. Foley, Paul G. Ayoub, Vrishti Sinha, Colin Juett, Alicia Sanoyca, Emily C. Duggan, Lindsay E. Lathrop, Priyanka Bhatt, Kevin Coote, Beate Illek, Brigitte N. Gomperts, Donald B. Kohn, Steven J. Jonas   +12 more
wiley   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

Influence of Pitting Casing Damage on the Sealing Performance of Packers

Shiyou jixie
In downhole plugging operations, the pitting casing damage may affect the sealing performance of the packer, thus threatening the field operations and even leading to serious accidents.
Qiao Zhangyu, Lei Ning, Guo Yanbao, Zhang Zheng   +3 more
doaj  

Orthogonal Test and Regression Analysis on the Sealing Performance of Composite-type Ram BOP Packing Unit

Shiyou jixie, 2020
The sealing structure of the rubber packing unit of the ram BOP for snubbing operation mostly uses composite sealing. The material properties of the rubber matrix and wear-resistant block both affect the sealing performance of the rubber core. To analyze
Chen Ting, Ma Weiguo, Wang Wei, Zhu Kaihui   +3 more
doaj  

Gas-path seal technology [PDF]

Improved gas-path seals are needed for better fuel economy, longer performance retention, and lower maintenance, particularly in advanced, high-performance gas turbine engines.
Zuk, J.
core   +1 more source

Develop Guidelines for Pavement Preservation Treatments and for Building a Pavement Preservation Program Platform for Alaska [PDF]

, 2012
INE/AUTC 12 ...
Cheng, DingXin, Hicks, Gary, Liu, Jenny, Mullins, Tony, Zubeck, Hannele   +4 more
core