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Topic Review
Pressure Swing Adsorption Modeling
The pressure swing adsorption (PSA) process has been considered a promising method for gas separation and purification. However, experimental methods are time-consuming, and it is difficult to obtain the detailed changes in variables in the PSA process.
  • 1.6K
  • 13 May 2022
Topic Review
Blancpain
Blancpain SA (French pronunciation: ​[blɑ̃pɛ̃]) is a Swiss luxury watch manufacturer, headquartered in Paudex/Le Brassus, Switzerland . It designs, manufactures, distributes, and sells prestige and luxury mechanical watches. Founded by Jehan-Jacques Blancpain in Villeret, Switzerland in 1735, Blancpain is the oldest surviving watchmaking brand in the world. Blancpain has been a subsidiary of the Swiss Swatch Group since 1992, and is regarded as a top-tier Swatch brand. It is best known for its Fifty Fathoms diving watch introduced in 1953 and its 1735 Grande Complication wristwatch introduced in 1991.
  • 1.6K
  • 16 Nov 2022
Topic Review
Fundamentals of Coupled Bulk Acoustic Wave MEMS Resonators
Bulk acoustic wave (BAW) resonators are a type of Micro-Electro-Mechanical System (MEMS) device experiencing acoustic wave propagation through the bulk of the medium. Combining the approach of coupled resonators with BAW resonators has recently led to achieving better performance and new functionalities. In particular, coupled BAW resonators based on lateral vibration modes are studied due to its advantages.
  • 1.6K
  • 06 Jun 2022
Topic Review
Ruby Pistol
The self-loading Ruby pistol is best known as a French World War I sidearm, the Pistolet Automatique de 7 millim.65 genre "Ruby". A very international piece of weaponry, it was closely modeled after John Browning's M1903 design produced by the Belgian Fabrique Nationale de Herstal, and was produced by over 50 Spanish companies, but primarily by the Spanish Gabilondo y Urresti firm (the official "Gabilondo Ruby"). It was decommissioned in 1958, more than a decade after World War II was brought to an end, and was subsequently replaced.
  • 1.6K
  • 20 Oct 2022
Topic Review
Terahertz Emitter Using Resonant-Tunneling Diode
The terahertz (THz) band, which has a frequency of about 0.1 to several THz, is expected to play key roles in various applications, such as imaging, chemical and bio-technological analyses, and communications. Compact solid-state THz sources are important devices for these applications and various kinds of such sources have been studied, comprising both optical and electronic devices, as the THz band is located between millimeter and light waves.
  • 1.6K
  • 08 Apr 2021
Topic Review
Brackish Water Reverse Osmosis Desalination
Brackish water desalination, using the reverse osmosis (BWRO) process, has become common in global regions, where vast reserves of brackish groundwater are found (e.g., the United States, North Africa).
  • 1.6K
  • 25 Aug 2021
Biography
Benjamin Bradley
Benjamin Bradley (March 1836–1904) was an American engineer and inventor. Benjamin's correct surname was Boardley,[1][2][3] but since 1859 when the African Repository published an article wrongly spelling Benjamin's surname as Bradley, authors have written about him with the incorrect surname.[4] Benjamin Bradley was born a slave in Anne Arundel County, Maryland in March 1836.[2]  It has
  • 1.6K
  • 13 Dec 2022
Topic Review
Schweizer 300
The Schweizer RSG 300 series (formerly Sikorsky S300, Hughes 300 and Schweizer 300) family of light utility helicopters was originally produced by Hughes Helicopters, as a development of the Hughes 269. Later manufactured by Schweizer Aircraft, the basic design has been in production for almost 50 years. The single, three-bladed main rotor and piston-powered S-300 is mostly used as a cost-effective platform for training and agriculture.
  • 1.6K
  • 08 Nov 2022
Topic Review Peer Reviewed
Energy Storage Flywheel Rotors – Mechanical Design
Definition: Energy storage flywheel systems are mechanical devices that typically utilize an electrical machine (motor/generator unit) to convert electrical energy in mechanical energy and vice versa. Energy is stored in a fast-rotating mass known as the flywheel rotor. The rotor is subject to high centripetal forces requiring careful design, analysis, and fabrication to ensure the safe operation of the storage device.
  • 1.6K
  • 13 Apr 2022
Topic Review
Low-GWP Refrigerants (Pure and Blended)
Low global warming potential (GWP) refrigerants for the next-generation air conditioning systems have been investigated with target domestic applications. High-GWP refrigerants are mostly used in climate control applications such as heating, ventilation and air conditioning (HVAC) and refrigeration systems. 
  • 1.6K
  • 15 Nov 2022
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