Results 11 to 20 of about 2,732,747 (312)

AN ASSESSMENT OF WORLD HYDROCARBON RESOURCES [PDF]

open access: yesAnnual Review of Energy and the Environment, 1997
▪ Abstract  Assessments of global coal, oil, and natural gas occurrences usually focus on conventional hydrocarbon reserves, i.e. those occurrences that can be exploited with current technology and present market conditions. The focus on reserves seriously underestimates long-term global hydrocarbon availability.
openaire   +4 more sources

Tidal current resource assessment [PDF]

open access: yesProceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2007
This paper outlines present thinking on the determination of accessible tidal current resources within channels and other potentially exploitable locations. The fundamental principles behind tides and tidal currents are briefly discussed and the implications of temporal and spatial variations on the evaluation of the resources considered in the ...
Bryden, Ian   +3 more
openaire   +2 more sources

Socio-Economic Determinants of Vulnerability to Climate Variability and Change Across Gender in Southeast Nigeria

open access: yesJournal of Agricultural Extension, 2019
This study assessed vulnerability problems in Southeast Nigeria. The specific objectives were to, assess vulnerability to impacts of climate variability and change (CVC) and their differences across gender and identify socio-economic determinants of ...
Onyinyechi Ifeanyi Nnadi   +2 more
doaj   +4 more sources

Particular aspects of geo-ecologic assessment in geo-eco-socio-economic approach to the development of northern territories [PDF]

open access: yes, 2015
In today’s context, the preservation of territory’s ecosystem, when it becomes involved in the economic turnover, requires preemptive geo-ecological assessment aimed at identifying the extent of its sustainability to expected anthropogenic impact.
Semyachkov, A. I., Slavikovskaya, Yu. O.
core   +2 more sources

Study on Emerald-level Beryl from the Zhen'an W-Be Polymetallic Deposit in Shaanxi Province by Electron Probe Microanalyzer and Micro X-ray Diffractometer

open access: yesYankuang ceshi, 2018
BACKGROUND A new deposit type with a scheelite-beryl-molybdenite assemblage was first discovered in the Zhen'an area of Shaanxi Province. BAOBJECTIVES The research on chromatic mechanism and genetic mechanism of emerald was carried out.
DAI Hong-zhang   +4 more
doaj   +1 more source

Diurnal cycle RANS simulations applied to wind resource assessment [PDF]

open access: yes, 2019
Microscale computational fluid dynamics (CFD) models can be used for wind resource assessment on complex terrains. These models generally assume neutral atmospheric stratification, an assumption that can lead to inaccurate modeling results and to large ...
Apsley   +26 more
core   +2 more sources

Evaluation of Three Prokaryote Primers for Identification of Prokaryote Community Structure and Their Abode Preference in Three Distinct Wetland Ecosystems

open access: yesFrontiers in Microbiology, 2021
The ultimate role of prokaryote (bacteria and archaea), the decomposer of the wetland ecosystem, depends on its community structure and its interaction with the environment.
Kavita Kumari   +8 more
doaj   +1 more source

Land-use patterns and their implication on malaria transmission in Kilosa District, Tanzania

open access: yesTropical Diseases, Travel Medicine and Vaccines, 2018
Background Understanding of the land use and malaria transmission among farming communities in Tanzania is of great significance. Water resource development projects, deforestation, wetland cultivation, and land use changes for agricultural purposes all ...
Phillipo Paul   +2 more
doaj   +1 more source

Role of Climate-Smart Agriculture in Enhancing Farmers' Livelihoods and Sustainable Forest Management: A Case of Villages Around Songe-Bokwa Forest, Kilindi District, Tanzania

open access: yesFrontiers in Sustainable Food Systems, 2021
Climate change and variability are happening in Tanzania, and their impacts are felt in the socioeconomic sectors, as they have resulted in the decline of agricultural productivity and increased deforestation.
Hamza Omary Nkumulwa   +2 more
doaj   +1 more source

A systematic review on clinical effectiveness, side-effect profile and meta-analysis on continuation rate of etonogestrel contraceptive implant

open access: yesReproductive Health, 2021
Background Unintended pregnancies (UIP) have a significant impact on health of women and the health budget of countries. Contraception is an effective way to prevent UIPs.
Kusum V. Moray   +3 more
doaj   +1 more source

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