Results 111 to 120 of about 174,695 (299)

Nonelastomeric Rod Seals for Advanced Hydraulic Systems [PDF]

Advanced high temperature hydraulic system rod sealing requirements can be met by using seals made of nonelastomeric (plastic) materials in applications where elastomers do not have adequate life.
Hady, W. F., Waterman, A. W.
core   +2 more sources

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

Advanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho, M. Naeem, T. H. C. Costa, M. S. Libório, J. C. A. Queiroz, C. B. B. Luna, R. R. M. Sousa, P. S. Vieira, E. M. Araújo   +8 more
wiley   +1 more source

Variable area exhaust nozzle [PDF]

, 1979
An exhaust nozzle for a gas turbine engine comprises a number of arcuate flaps pivotally connected to the trailing edge of a cylindrical casing which houses the engine.
Johnston, E. A.
core   +1 more source

Nondestructive Testing of Welded Composite Metal Foams

Advanced Engineering Materials, EarlyView.
X‐ray computed tomography (CT) is used to evaluate welded steel–steel composite metal foam (CMF) joints of two density classes. It reports variation in postweld spatial void distribution and correlates it to weld‐induced changes, mechanical performance, and failure within welded CMF panels.
Chinmaya Prerana Inguva, Aman Kaushik, Afsaneh Rabiei   +2 more
wiley   +1 more source

Keperluan perkmdmatan e-kaunseling berasaskan laman web dikalangan pelajar sarjana pendidikan teknik dan vokasional (PTV) dI KUiTTHO [PDF]

, 2002
Kajian ini bertujuan mengetahui keperluan kaunseling berasaskan laman web yang digunakan sebagai medium perantaraan dalam sesi kaunseling. Ia adalah satu alternatif bagi menyokong kepada kaunseling secara bersemuka.
Abdul Manah, Mohd Hoirie
core  

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

Advanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund, Arthur Schulz, Peter Lunkenheimer, Maryana Kraft, Thomas Bergler, Harald Oberhofer, Dirk Volkmer   +6 more
wiley   +1 more source

Study on Influencing Factors of Non-contact Labyrinth Sealing Performance for High Speed Rotors

Jixie chuandong, 2022
In order to improve the sealing performance of the high-speed gearbox sealing device， this study analyzes the non-contact labyrinth sealing of the high-speed gear transmission commonly used in petroleum， chemical and other fields.
Jingyuan Wang, Yongfei Yang, Yufeng Li, Junhao Chen, Linjie Yang, Dongyang Li   +5 more
doaj  

Sealing performance of sealing structure in a sediment sampler under ultra-high pressure. [PDF]

Sci Rep, 2023
He S, Peng Y, Qiu S, Du X, Jin Y.
europepmc   +1 more source

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

Advanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal, Laura Calderón‐Rodríguez, Oksana Smirnova, Eren Grossmann, Aparna Binu Varghese, Karen Marlenne Garcia Alvarez, Andreas Schneemann, Thomas Hoyer, Ralf Wyrwa, Felix Helmut Schacher, Alexander Knebel   +10 more
wiley   +1 more source

Research on the Metal Sealing Performance of a Casing Head Hanger Under High-Pressure Conditions

Lubricants
With the deepening of oil and gas exploration and development into ultra-deep and ultra-high pressure environments, the pressure of wellhead equipment is becoming higher and higher. The sealing performance of the casing head hanger is directly related to
Zhenyu Jia, Pengcheng Wang, Junhui Wei, Guanggui Zou, Jinli Zhu, Jianfei Wang, Cong Guo   +6 more
doaj   +1 more source