Results 111 to 120 of about 34,337 (295)

Standards in Library Technology [PDF]

open access: yes, 1972
published or submitted for ...
Orne, Jerrold
core  

Perspectives and behaviors surrounding planting practices in North America inform genetic conservation realities for American ginseng (Panax quinquefolius)

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
American ginseng is a shade‐obligate, North American medicinal plant that is widely traded and used internationally. To meet global demand, ginseng is cultivated in forest farms in the Appalachian region of the USA and field‐based artificial shade farms in two regions: Ontario, Canada and Wisconsin, USA. We conducted social research leveraging in‐depth
Rachel E. Palkovitz   +2 more
wiley   +1 more source

Research and application of intelligent control technology for dust control parameters in fully mechanized excavation working face of coal mines

open access: yesMeitan kexue jishu
To address the technical challenge of manually adjusting dust control parameters in long-term the fully mechanized excavation working face, which leads to an inability to sustain optimal dust suppression effects, this paper adopts a research approach ...
Lei SHI   +3 more
doaj   +1 more source

A preliminary assessment of the coastal fishery resources in India: socioeconomic and bioeconomic perspective [PDF]

open access: yes
India is endowed with a continental shelf of 0.5 million km2 and an exclusive economic zone (EEZ) of about 2 million km2. Almost half (39%) of the Indian population utilizes the marine fisheries resources.
Immanuel, S.   +4 more
core  

From wild to tamed: Reimagining novel crops through omics and local plant diversity

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
The global food system faces growing pressure from climate change, biodiversity loss, and rising nutritional demands. Agriculture has increased yields but reduced crop diversity, flavor, and nutritional quality, leaving societies vulnerable and dependent on a narrow set of staple species.
Alexandra Sanfeliu Meliá   +1 more
wiley   +1 more source

RNA interference in crop protection: opportunities and challenges during the transition to commercialization

open access: yesPest Management Science, EarlyView.
RNA interference (RNAi) technologies, host‐induced gene silencing (HIGS) and spray‐induced gene silencing (SIGS), potentially offer sustainable crop protection. However, efficacy, costs, regulatory clarity, and socio‐environmental impacts require further evaluation for broader use.
Elisabetta Sergi   +12 more
wiley   +1 more source

Linkage control method of fully mechanized mining equipment based on thousand eyes intelligent analysis system

open access: yesMeikuang Anquan
The fully mechanized mining face system is complex and large, and the equipment is highly correlated. The reliability of the intelligent fully-mechanized coal mining equipment system has gradually become the key factor restricting the intelligent safe ...
Xu LI   +4 more
doaj   +1 more source

UWB based measurement system for pushing progress of fully mechanized working face

open access: yesGong-kuang zidonghua
A real-time measurement system for the pushing progress of fully mechanized working face based on UWB ranging technology is proposed to address the problems of existing measurement and calculation methods, such as time-consuming, labor-intensive, large cumulative errors, and inability to recalculate after sensor damage.
LIU Qing, LIU Junfeng
openaire   +1 more source

Small Pillar Driving Technique in Fully Mechanized Working Face of Outburst Coal Seam

open access: yesMeikuang Anquan, 2020
Aiming at the safety problems caused by poor roadway stability and other factors during gob-side entry driving of 15106 isolated island face in Sijiazhuang Mine, theoretical calculations, numerical simulations and field tests were adopted to determine the coal pillar size and field practice effect of gob-side entry driving in isolated face. The results
openaire   +1 more source

Impact hazard analysis and prevention research of square structure area in fully mechanized working face

open access: yesGong-kuang zidonghua, 2021
At present, the impact hazard analysis of fully mechanized working face is only carried out from a single geological structure or square effect factor. However, the mining conditions of rock burst mines are always changing, and the influencing factors are complex and diverse.
YAN Yaodong1,2   +4 more
openaire   +1 more source

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