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Topic Review
Triply Periodic Minimal Surfaces Thermal Hydraulic Effects
Triply Periodic Minimal Surfaces (TPMS) are a kind of periodic implicit surface with zero mean curvature, that is, the surfaces that locally minimize surface area for a given boundary. The TPMS is composed of infinite, non-self-intersecting, periodic surfaces in three principal directions. The TPMS networks as repeated lattice structures have attracted much research interest because they have shown better mechanical performance, mass transfer, and thermal conductivity than conventional and strut-based structures, which have been employed in different disciplines. With excellent performances in the TPMS architectures, current works have investigated the TPMS structures to utilize in a wide range of applications.
  • 4.7K
  • 29 Dec 2022
Topic Review
Failure Diagnosis Method for Hydraulic Pump
To implement Prognostics Health Management (PHM) for hydraulic pumps, it is very important to study the faults of hydraulic pumps to ensure the stability and reliability of the whole life cycle. Hydraulic systems are applied to all crucial mechanical equipment and play an irreplaceable role in the field of industrial production and manufacturing. As the “heart” of the hydraulic system, the hydraulic pump is responsible for converting mechanical energy into hydraulic energy and providing pressure oil for the system.
  • 690
  • 29 Dec 2022
Biography
David E. Pergrin
Colonel David E. Pergrin (26 July 1917 – 7 April 2012) was commanding officer of the 291st Engineer Combat Battalion of the United States Army during World War II. Before the war he earned an engineering degree at Pennsylvania State University, graduating in 1940. While at Penn State he participated in the ROTC program. In addition, Pergrin played on the university's football team, was elected
  • 672
  • 29 Dec 2022
Topic Review
Indonesia Rice Irrigation System
Indonesia is likely to face a water crisis due to mismanagement of water resources, inefficient water systems, and weak institutions and regulatory organizations. In 2020, most of the fresh water in Indonesia was used for irrigation (74%) to support the agricultural sector, which occupies 30% of the total land area in Indonesia. Of all agricultural commodities, rice is one of the major and essential commodities, as it is the basic staple food for almost every Indonesian. However, in 2018, the Ministry of Public Works and Housing (MoPWH) reported that 46% of Indonesian irrigation infrastructure is moderately to heavily damaged. Aside from how climate change influences water availability for irrigation, rice production with a constant water ponding system has been found to contribute to climate change, as it emits methane (CH4) and other greenhouse gases from agricultural fields of Indonesia. Therefore, the required modernization of irrigation systems in Indonesia needs to consider several factors, such as food demands for the increasing population and the impact of irrigated agriculture on global warming. Multi-stakeholders, such as the government, farmers, water user associations (WUA), and local research institutions, need to work together on the modernization of irrigation systems in Indonesia to meet the increasing food demands of the growing population and to minimize the impacts of agriculture on climate change.
  • 738
  • 29 Dec 2022
Biography
Kevin Greenaugh
Kevin Greenaugh (born May 15, 1956) is an American nuclear engineer and senior manager at the National Nuclear Security Administration (NNSA) in Washington, DC, United States. Born in the United Kingdom as a U.S. military dependent, Greenaugh has been a part of the military and commercial energy industry for multiple decades. After attending school in Berlin, Germany at the height of the cold
  • 657
  • 29 Dec 2022
Biography
Walt Havenstein
Walter Perry "Walt" Havenstein (born April 24, 1949)[1] is an American businessman, engineer, and former United States Marine. He was the Republican nominee for Governor of New Hampshire in 2014. Havenstein is the son of Kathryn McKay (Creech) and Paul Lieder Havenstein, CDR, USN.[2][3][4] He graduated from the United States Naval Academy with a bachelor's degree in aerospace engineering and
  • 575
  • 29 Dec 2022
Biography
John Texter
John Texter (born August 9, 1949, in Lancaster, Pennsylvania) is an American engineer, chemist, and educator, and is professor of polymer and coating technology at Eastern Michigan University (EMU) in Ypsilanti, Michigan.[1] He is best known for his work in applied dispersion technology and small particle science, for his international conference organization activities, including Particles 2001
  • 716
  • 29 Dec 2022
Biography
Sossina M. Haile
Sossina M. Haile (born July 28, 1966) is an Ethiopian-United States chemist, known for developing the first solid acid fuel cells.[1] She is a professor of Materials Science and Engineering at Northwestern University, Illinois, USA.[2] Haile received the NSF National Young Investigator Award (1994–99), Humboldt Fellowship (1992–93), Fulbright Fellowship (1991–92), and AT&T Cooperative Res
  • 467
  • 29 Dec 2022
Topic Review
Enhanced Heat Transfer Technology for Helium–Xenon Gas Mixtures
As one of the most promising working substances for space nuclear power sources, research on the heat transfer characteristics of helium–xenon gas mixtures has become the key issue in focus. The ultimate goal is to improve the heat transfer efficiency of helium–xenon mixture in space nuclear power supply.
  • 664
  • 29 Dec 2022
Topic Review
MEMS-Based Micro Sensors for Measuring Tiny Forces Acting
Small insects perform agile locomotion, such as running, jumping, and flying. Recently, many robots, inspired by such insect performance, have been developed and are expected to be smaller and more maneuverable than conventional robots. For the development of insect-inspired robots, understanding the mechanical dynamics of the target insect is important. However, evaluating the dynamics via conventional commercialized force sensors is difficult because the exerted force and insect itself are tiny in strength and size. As the force sensor, micro-force plates for measuring the ground reaction force and micro-force probes for measuring the flying force have mainly been developed. In addition, many such sensors have been fabricated via a microelectromechanical system (MEMS) process, due to the process precision and high sensitivity.
  • 433
  • 28 Dec 2022
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