Results 21 to 30 of about 765,499 (287)

Pit latrines and their impacts on groundwater quality: a systematic review. [PDF]

open access: yes, 2013
BackgroundPit latrines are one of the most common human excreta disposal systems in low-income countries, and their use is on the rise as countries aim to meet the sanitation-related target of the Millennium Development Goals.
Graham, Jay P, Polizzotto, Matthew L
core   +2 more sources

Determining UAV Flight Trajectory for Target Recognition Using EO/IR and SAR

open access: yesSensors, 2020
The paper presents the concept of planning the optimal trajectory of fixed-wing unmanned aerial vehicle (UAV) of a short-range tactical class, whose task is to recognize a set of ground objects as a part of a reconnaissance mission.
Wojciech Stecz, Krzysztof Gromada
doaj   +1 more source

Optimization of Land Saving and Loss Reducing and Slope Stability Variation Patterns in Open-Pit Mine

open access: yesGeofluids, 2021
This study presents different land saving and loss reducing schemes. Comprehensively compare the economic benefits of the schemes. It is shown that the optimal scheme can recover tons of coal resources on the south slope, creating significant economic ...
Tongsuo Guo   +9 more
doaj   +1 more source

Comparative Study of Point Intercept Transect (PIT) Method and Underwater Photo Transect (UPT) to Calculate Hard Coral Cover Percentage

open access: yesJurnal Ilmiah Perikanan dan Kelautan, 2022
Highlight Research • Point Intercept Transect Method (PIT) and Underwater Photo Transect (UPT) to monitor coral cover was compared • Percentage of hard coral cover was analyzed • The average difference of the percentage of hard coral cover obtained from ...
Johan Danu Prasetya   +1 more
doaj   +1 more source

Relationship Between the Foveal Avascular Zone and Foveal Pit Morphology [PDF]

open access: yes, 2012
Purpose.To assess the relationship between foveal pit morphology and size of the foveal avascular zone (FAZ). Methods. Forty-two subjects were recruited.
Beringer, Joseph   +5 more
core   +2 more sources

Justification of the technological scheme parameters for the development of flooded deposits of construction sand

open access: yesЗаписки Горного института, 2022
The article describes the main types of technological schemes for working out the flooded strata of sand deposits using hydraulic shovel excavators. The analysis of scientific and technical literature describing the experience of using hydraulic shovel ...
Vladimir V. Ivanov, Denis O. Dzyurich
doaj   +1 more source

Assessing the Spatial Relationship Between Fixation and Foveal Specializations [PDF]

open access: yes, 2016
Increased cone photoreceptor density, an avascular zone (FAZ), and the displacement of inner retinal neurons to form a pit are distinct features of the human fovea.
Carroll, Joseph   +5 more
core   +2 more sources

From a pit to a palace: Deconstructing the economics and politics of labour migration in the City of Tshwane through the lenses of Genesis 41:41–57

open access: yesHTS Teologiese Studies/Theological Studies, 2021
Migration to the City of Tshwane has, amongst others, been propelled by economic and political dynamics. This has always manifested in the scramble for resources as internal and cross-border migrants struggle to access the mainstream economy of the host ...
Thinandavha D. Mashau, Leomile Mangoedi
doaj   +1 more source

Tuning localized plasmons in nanostructured substrates for surface-enhanced Raman scattering [PDF]

open access: yes, 2006
Comprehensive reflectivity mapping of the angular dispersion of nanostructured arrays comprising of inverted pyramidal pits is demonstrated. By comparing equivalently structured dielectric and metallic arrays, diffraction and plasmonic features are ...
Abdelsalam   +19 more
core   +1 more source

Studies of Rural Settlements in the Areas of Golden Horde Cities in West Kazakhstan (on the example of Zhaiyk settlement)

open access: yesАрхеология евразийских степей, 2022
The paper features the results of archaeological studies carried out on the periphery of Zhaiyk settlement. Reconnaissance and exploration work was carried out in 2013. Later, archaeological excavations were carried out based on the exploration materials.
Murat D. Kalmenov   +2 more
doaj   +1 more source

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