Results 81 to 90 of about 36,017 (247)

Aerospike thrust chamber program [PDF]

An existing, but damaged, 25,000-pound thrust, flightweight, oxygen/hydrogen aerospike rocket thrust chamber was disassembled and partially repaired.
Campbell, J., Jr., Cobb, S. M.
core   +1 more source

Response of Remote Tropical West Pacific Islands to Climate Variability: A Multiproxy Record From T‐Lake, Palau, Spanning the Early Holocene to Present

Archaeometry, EarlyView.
ABSTRACT Lake sediments are natural archives of past environmental dynamics and how these systems have responded to past climate variability. Sediment geochemistry, governed by local geology and climate processes, is unique to each lake‐catchment and geochemical proxies must be validated for each study site.
Jalene Nalbant, Larissa Schneider, Jessica L. Blois, Matthew Wolhowe, Julian P. Sachs, Simon G. Haberle, Geoffrey Clark   +6 more
wiley   +1 more source

Numerical Simulation of Interfacial Fracture Behavior of Heat-Insulating and Abradable Seal Coatings [PDF]

Cailiao Baohu
In order to explore the failure behavior of heat-insulating and abradable seal coating，the effects of interface roughness and the abradable structure of the surface layer near the interface on the cracking of the composite coating were investigated.The ...
WANG Xu, SHI Qiusheng, LI Guangrong, YANG Guanjun
doaj   +1 more source

Performance Enhancement on Gas Fired Water Heater Using Titanium Heat Exchanger for Latent Heat Recovery

Journal of the Japan Institute of Energy, 2005
The present study has been carried out to evaluate the performance of natural gas (13A) fired water heater with titanium heat exchanger for latent heat recovery. The latent heat recovery with condensation is very useful method to enhance the thermal efficiency of the water heater.
Kyudae HWANG, Sunggun HYUN, Kiyoshi SAITO, Sunao KAWAI, Katsuyuki INAGAKI, Ryuji OZAWA   +5 more
openaire   +2 more sources

The Material Basis of 18th‐Century Meissen Porcelain

Archaeometry, EarlyView.
ABSTRACT In the summer of 1708, the quest for making hard‐paste porcelain from Saxonian clay and other mineral resources succeeded. This was achieved by applying as its essential ingredient newly discovered pure kaolin from Heidelsberg near Aue, western Saxon Ore Mountains.
Robert B. Heimann
wiley   +1 more source

Feedback control of excitability and high K+ induced epileptiform bursts in male rat hippocampal slices with a photocaged adenosine A1 receptor agonist

British Journal of Pharmacology, EarlyView.
Background and Purpose Adenosine is a potent regulator of neurotransmission and neuronal excitability, through activation of Gi coupled adenosine A1 receptors (A1Rs). Adenosine has gained interest as an anticonvulsant because of its endogenous involvement in ending seizure activity, but peripheral side effects require local application.
Erine Craey, Marijke Vergaelen, Serge Van Calenbergh, Jeroen Spanoghe, Evelien Carrette, Kristl Vonck, Paul Boon, Wytse J. Wadman, Robrecht Raedt   +8 more
wiley   +1 more source

A study of aircraft fire hazards related to natural electrical phenomena Final report, Jun. 1966 - Jul. 1967 [PDF]

Natural electrical phenomena as aircraft fire hazards, with study of flame propagation in fuel vent ...
Gerstein, M., Kester, F. L., Plumer, J. A.   +2 more
core   +1 more source

Porcelain bonding to titanium with two veneering principles and two firing temperatures.

Swedish dental journal, 2013
Dental literature, as well as dental laboratories, has described problems with ceramic veneering of titanium, while clinical and in vitro studies have reported good results. The objective of this study was to investigate the effect of firing temperature, thermo cycling, and veneering methods on bond strength between porcelain and titanium.
Haag, Per, Andersson, Martin, Nilner, Krister   +2 more
openaire   +2 more sources

Bond strength and interfacial analysis of six CoCr alloys made by conventional casting and selective laser melting

Journal of Prosthodontics, EarlyView.
Abstract Purpose To investigate the effects of the elemental composition and the manufacturing process of cobalt chromium–molybdenum (CoCr–Mo), cobalt chromium–tungsten (CoCr–W), and CoCr–Mo‐W alloys on metal–ceramic bond strength. Materials and Methods Six CoCr‐based alloys were included in this study, a were classified into three different groups ...
Youssef S. Al Jabbari, Konstantinos Dimitriadis, Aref Sufyan, Spiros Zinelis   +3 more
wiley   +1 more source

Flame-retardant mechanism of TiAl alloy by frictional ignition method

Materials & Design
TiAl is used as the preferred material for aero-engine low-pressure turbine blades, which is also faced with similar problems of “Titanium fire” under long-term high temperature service conditions.
Shichao Zhu, Jinhu Liu, Tielong Sun, Leiting Jia, Yongfeng Liang, Hui Peng, Junpin Lin   +6 more
doaj   +1 more source