Results 71 to 80 of about 41,416 (285)

Custom Unit Pump Development for the EVA PLSS [PDF]

This paper describes the effort by the Texas Engineering Experiment Station (TEES) and Honeywell for NASA to design and test a pre-flight prototype pump for use in the Extra-vehicular activity (EVA) portable life support subsystem (PLSS).
Goldman, Jeff, Kurwitz, Cable, Larsen, Ben, Little, Frank, Oinuma, Ryoji, Reinis, Filip, Schuller, Michael, Trevino, Luis   +7 more
core   +1 more source

Open Space Policy‐Making and Planning in Urban Regions: Towards a Theoretical Approach Based on the Multiple Streams Framework

Environmental Policy and Governance, EarlyView.
ABSTRACT Open space networks provide multiple ecosystem services and other benefits which are particularly important to urban regions. Accordingly, there are many examples around the world of urban‐regional open space policies such as regional parks and green belts that connect non‐built‐up areas over several municipalities. Yet it is still unclear how
Gerd Lintz, Mariam Diagayété
wiley   +1 more source

Design of a Hydroelectronic Solar‐Tracking System for Solar Panels

Energy Science &Engineering, EarlyView.
A prototype of a passive solar‐tracking system utilizing buoyant force based on water level was developed, and its MATLAB/Simulink model was implemented. This study is expected to encourage researchers to design solar‐tracking mechanisms using metals with different thermal expansion coefficients, air, oil, and other fluids. ABSTRACT This study presents
Ufuk Süğürtin, Türker Fedai Çavuş
wiley   +1 more source

Study on the Oil Churning Power Loss of External Gear Pump

Jixie chuandong, 2016
The pressure generated by the compression of the trapped oil lead to a resistance moment,which will result in a certain oil churning power losses,when the external gear pump is working.
Tang Jinglai, Deng Bin, Wang Guozhi, Yu Lanying   +3 more
doaj  

Multi‐material and dual‐stimulus coupled actuation micro‐gears for shape–rotation control in intelligent micro‐electro‐mechanical systems

FlexMat, EarlyView.
A multi‐material and dual‐stimulus coupled actuation micro‐gear (MDCAMG) is developed via femtosecond‐laser 3D printing combined with magnetic nanoparticle absorption, enabling integrated environmental sensing and remote actuation at the microscale. The device incorporates a pH‐responsive hydrogel matrix for autonomous swelling/shrinking and a magnetic
Sida Peng, Shengzhi Sun, Jian Li, Yi Zhu
wiley   +1 more source

Numerical Study on the Instantaneous Theoretical Flow Rate of the Continuous Contact Gear Pump with a New Geometrical Approach

Journal of Marine Science and Engineering
External gear pumps with an involute tooth profile are used in many applications because of their simple shape, low production cost, and excellent reliability.
Hosung Jang, Sangwon Ji
doaj   +1 more source

Design of an advanced 500-hp helicopter transmission [PDF]

, 1983
High contact ratio spar gears planetary, spiral besel gears, bearings, investment-cast planet carrier, and investment cast stainless-steel housings are ...
Battles, R. A., Braddock, C. E.
core   +1 more source

Exploring Belonging Through the Student Union: The Power of Familiar Faces and Comfortable Spaces

New Directions for Higher Education, EarlyView.
ABSTRACT Since their origin, college unions have played a significant role in fostering a sense of belonging and advancing the academic mission of colleges. However, published empirical studies remain scarce due to the focus of college union professionals’ work on both student development and facility operations.
Katheryn Paynter‐Fanning, Adriane Reilly   +1 more
wiley   +1 more source

Unintended Consequences of Life‐Saving Pharmaceutical Innovations: How HAART Led to the Resurgence of Syphilis

Health Economics, EarlyView.
ABSTRACT Syphilis, a sexually transmitted infection that can lead to serious health complications, was almost eliminated in the United States by 2000. But since then, its incidence began to increase, recently reaching a 60‐year peak. We suggest that the introduction of the highly active antiretroviral therapy (HAART) drug regimen, which transformed HIV
David Beheshti, Scott Cunningham, Nir Eilam   +2 more
wiley   +1 more source

Building High Involvement Work Systems in the Digital Era: Employee Experience‐Oriented Digital HRM and Employee Involvement

Human Resource Management, EarlyView.
ABSTRACT Despite the increasing application of digital technology in management practices, its implications for employee involvement and high involvement work systems (HIWSs) remain largely unexplored. Based on an in‐depth qualitative case study of Tencent—one of China's largest information technology companies—this article explores whether and in what
Wei Wei, Xiaolan Fu
wiley   +1 more source