Results 121 to 130 of about 17,474 (298)
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.A lightweight hybrid backpack integrating SC‐TENGs and R‐EMGs harvests biomechanical energy during walking. With a low activation speed of 3 km h−1 and a high specific power of 0.18 W kg−1, it enables self‐powered field safety management. The power backpack refers to an energy‐harvesting solution engineered to mitigate battery reliance in wearable ...
Jie Chen +6 more
wiley +1 more source
Drive Unit with Planetary Gear and Safety Clutch
, 2014 Tato bakalářská práce se zabývá návrhem pohonné jednotky zařízení s planetovou převodovkou. Návrh a konstrukce převodovky je podložen kontrolním výpočtem. Práce je rozdělena do dvou částí. První část se zabývá teoretickým nastíněním mechanických převodů,
Zaoral, Radek
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ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.This work reports one‐pot synthesized novel zwitterionic polydopamine‐silica (ZSiPDA) nanofillers for fabricating PES hybrid ultrafiltration membranes with enhanced hydrophilicity, permeability, and antifouling performance. The optimized membrane achieved over 91% humic acid removal and showed strong potential for municipal wastewater treatment.
Roqaya A. Ismail +5 more
wiley +1 more source
Environmental Policy and Governance, EarlyView.ABSTRACT Incoherence between national land use policies may weaken climate mitigation efforts by creating conditions under which agricultural and forestry production and GHG emissions are displaced across borders (leakage). Coherence depends on constellations and prioritization of national policy aims in land use (production) and climate (conservation).
Heiner von Lüpke +8 more
wiley +1 more source
, 1969 Self-lubricating gear, designed for long term operation in a vacuum at high, low, and ambient temperatures, is constructed of alternating layers of metal and a dry lubricant material, such as polytetrafluoroethylene, with a suitable reinforcing material ...
Demorest, K. E.
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Method for cutting worm and worm gear in a worm and gear reduction unit with circulation of bearing balls and related cutting tools [PDF]
, 2006 A method for cutting worm and worm wheel in a worm-gear reduction unit ( 1 ) with circulation of bearing balls, comprising the steps of: (a) obtaining races ( 30 ) for the bearing balls ( 4 ) onto the worm wheel ( 3 ); and (b) obtaining races ( 20 ) for .
Vivio, F +6 more
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The Dynamics of the Policy Mix and Sectoral Gaps in South Korea's Decarbonization Transition
Environmental Policy and Governance, EarlyView.ABSTRACT While a coherent policy mix is a fundamental prerequisite for successful energy transitions, existing frameworks predominantly rely on static evaluations. This horizontal approach fails to capture the deep temporal dynamics and physical inertia inherent in socio‐technical regime shifts.
Yong Hwan Kim, Kyung Nam Kim
wiley +1 more source
Method for cutting worm and worm gear in a worm and gear reduction unit with circulation of bearing balls and related cutting tools [PDF]
, 2009 A method for cutting worm and worm wheel in a worm-gear reduction unit ( 1 ) with circulation of bearing balls, comprising the steps of: (a) obtaining races ( 30 ) for the bearing balls ( 4 ) onto the worm wheel ( 3 ); and (b) obtaining races ( 20 ) for .
Vivio, F +6 more
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The Distributive Consequences of Active Welfare Policies in Europe
European Policy Analysis, EarlyView.ABSTRACT This article examines the distributive consequences of active welfare policies in Europe by analysing tier‐specific investments in individualised employment services across four European welfare states: Denmark, Germany, the Netherlands and the United Kingdom.
Deborah Jackwerth‐Rice +1 more
wiley +1 more source
Jixie chuandong, 2017 The distribution of the gear temperature field has a significant impact on the gear tooth surface gluing failures,which have a significant impact on the reliability and gear service life.
Chen Ting
doaj