Results 131 to 140 of about 13,512 (265)

Distribution and Concentration of Canadian Livestock [PDF]

open access: yes
Livestock Production/Industries,
Beaulieu, Martin S.   +2 more
core   +1 more source

Bridging the gap between science, policy and stakeholders: Towards sustainable wolf–livestock coexistence in human‐dominated landscapes

open access: yesPeople and Nature, EarlyView.
Abstract While the return of wolves (Canis lupus) to many European countries is a conservation milestone, the negative impacts are unevenly distributed across society, placing high pressure on livestock grazing systems. For this perspective, scientists from diverse disciplines and geographical backgrounds reflect on the state of livestock–wolf ...
Emu‐Felicitas Ostermann‐Miyashita   +11 more
wiley   +1 more source

Research on the Permanent Magnet Synchronous Motor Drive Systemfor High-speed EMUs

open access: yes机车电传动, 2016
To achieve high energy-efficiency of high-speed EMUs, PMSM traction system for high-speed EMUs was developedbased on CRH380A technical platform. Overall technical parameters, traction characteristic curve design, main circuit of traction system,main ...
Feng Jianghua
doaj  

FACTORS AFFECTING PRODUCTION EFFICIENCY IN A NEW ALTERNATIVE ENTERPRISE: THE CASE OF THE RATITE INDUSTRY [PDF]

open access: yes
Technical efficiency measures are calculated for ratite producers using data envelopment analysis. Regression analysis is then used to determine producer characteristics that are likely to lead to higher technical efficiencies.
Gillespie, Jeffrey M.   +2 more
core   +1 more source

Engaging the public in plant science: Communication facilitators and barriers of scaling up a citizen science campaign

open access: yesPeople and Nature, EarlyView.
Abstract Volunteers have been involved in nature observations for decades through citizen science initiatives, providing large data sets as well as problem identification that allow a more complete understanding of many natural phenomena. Although communication is a core component in citizen science, the key factors that determine its effectiveness in ...
Kristiina Gibson   +18 more
wiley   +1 more source

Research on Development Trend of Intercity EMUs

open access: yes机车电传动, 2019
This paper analyzed the role of national policies in promoting the development of intercity EMUs, systematically analyzed intercity, line, passenger flow and other factors, and put forward the top-level indicators and future development direction of ...
Yanhui QI, Changlong ZHAO
doaj  

Repositories of biocultural diversity: Toward best practices for empowering ethnobotany in digital herbaria

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Societal Impact Statement As herbaria digitize millions of plant specimens, ethnobotanical information associated with them is becoming increasingly accessible. These biocultural data include plant uses, names, and/or management practices of Indigenous Peoples and Local Communities (IPLCs).
Robbie Hart   +23 more
wiley   +1 more source

TGA16 Type IGBT Converter for High-speed Test EMUs

open access: yes机车电传动, 2014
The main technical parameters, power circuit principle, structure and cooling system of the TGA16 type IGBT converter employed in the high-speed test EMUs were introduced, as well as the technical characteristics of the converter.
WENG Xing-fang, LIU Da, ZOU Dang-bing
doaj  

Ionogel Actuators: A Review

open access: yesSmartBot, EarlyView.
Ionogels dynamically and functionally couple ionic liquids with polymer networks, enabling multiscale programmable deformation and motion under electrical, magnetic, optical, thermal, humidity, and chemical stimuli. This article systematically elucidates the constituent components, structural design, and multiscale actuation mechanisms of ionogel ...
Dezhou Cao   +5 more
wiley   +1 more source

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