Results 41 to 50 of about 953,275 (337)

Determination of Vibration Properties and Reliable Frequency Estimation for Synchronous Vibrations Through Improved Blade Tip Timing Techniques Without a Once-per-Revolution Sensor

Sensors
Synchronous vibrations, which are caused by periodic excitations, can have a severe impact on the service life of impellers. Blade Tip Timing (BTT) is a promising technique for monitoring synchronous vibrations due to its non-intrusive nature and ability
Marios Sasakaros, Luca Mann, Markus Schafferus, Manfred Wirsum   +3 more
doaj   +1 more source

Effect of heat treatment environment on mechanical properties and microstructure of alumina fibers

Cailiao gongcheng, 2023
Continuous alumina fiber-reinforced ceramic matrix composites are one of the ideal thermal structural materials for aerospace applications. Mechanical properties of composites in different environments depend on the mechanical properties of continuous ...
SUN Jingwei, WANG Honglei, YANG Rui, ZHOU Xingui   +3 more
doaj   +1 more source

An innovative pressure swing adsorption cycle [PDF]

, 2019
Over the last century, fresh water and cooling demand have been increased tremendously due to improved living standard, industrial and economic development.
Burhan, Muhammad, Ng, Kim Choon, Oh, Seung Jin, Shahzad, Muhammad Wakil, Ybyraiymkul, Doskhan   +4 more
core   +1 more source

A Termite‐Inspired Alternative to Cement

Advanced Functional Materials, EarlyView.
A termite‐inspired composite of clay, cellulose, and lignin forms a dense fibrous network with concrete‐like strength (32 MPa) and superior elasticity, processed at ambient temperature. Abstract Clay combined with organic materials is used by termites as a strong and durable construction material for their mounds with minimal environmental impact. Here,
Oren Regev, Peter Fratzl, Emeline Raguin, Markus Antonietti   +3 more
wiley   +1 more source

Using AI-based chatbots for individualized teacher professional development: An empirical study of the in- service training programme at the University College of Teacher Education Burgenland

Ubiquity Proceedings
This research paper investigates the potential of AI-based chatbots to support teachers in identifying professional development (PD) opportunities tailored to subject-specific, pedagogical, and technological requirements.
Thomas Leitgeb, Michael Leitgeb
doaj   +1 more source

Gasification of Pine Wood Chips with Air-Steam in Fluidized Bed [PDF]

, 2015
Tato práce studovala vliv použití vzduchu a páry jako zplynovacího činidla ve zkapalňovacím generátoru plynu na vlastnosti vyprodukovaného plynu (oxid uhelnatý, vodík, obsah dehtu a nízká výhřevnost). Tato studie byla založena na experimentech které byly
Salami, Najdat
core  

Full‐Spectrum Solar Harvesting and Desalination Enabled by Supra‐Nano Amorphous Ruthenium Dioxide – Mineral Composites

Advanced Functional Materials, EarlyView.
A mineral‐based supra‐nano amorphous ruthenium dioxide composite (a‐Ru0.5‐AM) was designed, achieving 97% broadband solar absorption. Under one sun, it reaches 87.91 ± 0.32 °C with a distinct thermal buffering effect that favors thermal confinement.
Yunchen Long, Zhengyi Mao, Bowen Li, Xiujuan Hu, Xinxue Tang, Yuanchao Liu, Jia‐Hua Liu, Hongkun Li, Chong Wang, Hong Yue, Weihui Ou, Johnny Chung Yin Ho, Jian Lu, Yang Yang Li   +13 more
wiley   +1 more source

Simple prediction method of unstable fluid force in turbine blade row of steam turbine

Nihon Kikai Gakkai ronbunshu, 2016
Unstable fluid force may be induced by rotor blade eccentricity in turbo machinery such as steam turbines. To develop a prediction method for unstable fluid force in turbine blade rows, we calculated the fluid force by using computational fluid dynamics (
Kiyoshi YABATA, Kazuyuki YAMAGUCHI, Kenichi MURATA   +2 more
doaj   +1 more source

STEAM Oriented Science Learning Management During The COVID-19 Pandemic

Profesi Pendidikan Dasar, 2021
This research is motivated by the importance of experimentation in science learning which cannot be done directly in online learning during the pandemic.
Mimin Vera Dwi Priyantini, Bambang Sumardjoko, Choiriyah Widyasari, Yulia Maftuhah Hidayati   +3 more
doaj   +1 more source

THERMODYNAMIC ANALYSIS OF SYNTHESIS GAS AND HIGHER HYDROCARBONS PRODUCTION FROM METHANE [PDF]

, 2012
This chapter focused on thermodynamic chemical equilibrium analysis using method of direct minimization of Gibbs free energy for all possible methane reactions with oxygen (partial oxidation of methane), carbon dioxide (CO2 reforming of methane), steam ...
Istadi, Istadi
core