Results 71 to 80 of about 14,054 (273)
Lost in aggregation? On the importance of local food price data for food poverty estimates
American Journal of Agricultural Economics, EarlyView.Abstract This paper explores within‐country variations in food price dynamics and food poverty estimates by employing local market price data and national consumer price index (CPI) data. Our results show that national CPI data may be useful for approximating national trends but they fail to detect and identify spatial variations in local trends, which
Stephan Dietrich +4 more
wiley +1 more source
Annals of Neurology, EarlyView.Objective Cerebral ischemic stroke causes neuronal oxygen/energy deprivation, disrupting mitochondrial function including reduced membrane potential and bioenergetics, exacerbating neuronal injury. Mitochondrial defects are, therefore, a central neuropathological node and potential therapeutic target.
Ning Bian +9 more
wiley +1 more source
Experimental and analytical evaluation of efficiency of helicopter planetary stage [PDF]
The efficiency of a helicopter transmission planetary stage was studied both experimentally and analytically. Experiments were done by using a back-to-back, test-and-slave arrangement.
Krantz, Timothy L.
core +1 more source
Options for smallholder milk processing in sub-Saharan Africa [PDF]
, 2011 Describes the major constituents of cow's milk and their exploitation in milk processing. Discusses the technologies needed for small-scale manufacture of such dairy products as fermented milks, milk-fat products and soft or pickled cheeses; and the ...
O'Mahony, F., Peters, Kurt J.
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Natural Aging of Biomaterials in Ambient and Physiological Environments
Advanced NanoBiomed Research, EarlyView.Biomaterials used in biomedical applications can change their physical properties over time, even under ambient and physiological conditions. This review highlights key studies on the natural aging of materials ranging from soft hydrogels to metals and ceramics, emphasizing how time‐dependent changes influence function and performance.
Shuyu Zhang, Anne E. Staples
wiley +1 more source
Aggregate worker reallocation and occupational mobility in the United States: 1971-2000 [PDF]
We investigate the evolution and the sources of aggregate employment reallocation in the United States in the 1971-2000 March files of the Current Population Survey.
Francis Vella, Giuseppe Moscarini
core
An overview of advancements in helicopter transmission design [PDF]
, 1983 Development of a high temperature operating helicopter gearbox is ...
Mancini, J. H.
core +1 more source
Alexandria Engineering JournalAccurate analysis of the thermal equilibrium characteristics of high-speed train gearboxes can aid in preventing high-temperature malfunctions and ensuring the safe and efficient operation of trains.
Shuai Shao +5 more
doaj +1 more source
Efficiency testing of a helicopter transmission planetary reduction stage [PDF]
A parametric study of the efficiency of a 310-kW (420-hp) helicopter transmission planetary test section (four planets) was performed. The purpose was to determine the planetary contribution to the overall transmission power loss.
Handschuh, Robert F., Rohn, Douglas A.
core +1 more source
Jixie chuandong, 2017 Aiming at the frequent lubrication accidents of the high-speed train gearbox,the theoretical calculation of required volume of the gearbox lubrication oil is carried out.
Liu Jie +4 more
doaj