Results 21 to 30 of about 222,440 (307)

Well-log lithofacies classification based on machine learning for Chang-7 member in Longdong area of Ordos Basin [PDF]

open access: yesYouqicang pingjia yu kaifa, 2023
Lithofacies analysis serves as the foundation for reservoir evaluation. However, due to the limited coring quantity and cost constraints, identifying lithofacies using logging data for uncored wells becomes crucial.
SHEN Li,WANG Caizhi,NING Congqian,LIU Yingming,WANG Hao
doaj   +1 more source

GEOGRAPHICALANALYSIS WITH GIS METHODOLOGY FOR A SUSTAINABLE USE OF LOGGING RESIDUES IN MOUNTAINOUS AREA

open access: yesJournal of Agricultural Engineering, 2007
A GIS-based approach is presented in order to define a decision support system tool for strategic planning of forest biomass supply chain for a heating/energy use.
Raffaele Cavalli, Stefano Grigolato
doaj   +1 more source

Regional GIS-based evaluation of the potential and supply costs of forest biomass in Sweden [PDF]

open access: yesFrontiers of Agricultural Science and Engineering, 2017
The potential for harvestable forest fuel (logging residues and stumps from regeneration fellings and small diameter trees from early thinnings) in Sweden, divided in five regions, is provided.
Dimitris ATHANASSIADIS, Tomas NORDFJELL
doaj   +1 more source

Research on Rapid Identification and Evaluation Technology for Gas Formation during Underbalanced Drilling

open access: yesGeofluids, 2017
The underbalanced drilling (UBD) technology has been widely implemented due to its advantages in drilling efficiency improvement and cost reduction. However, this advanced technology requires very special equipment and operational mechanism, which raises
Hao Wu   +6 more
doaj   +1 more source

Investigation on production rate and cost of Timberjack-450C in two skidding direction in combined harvesting system [PDF]

open access: yesتحقیقات جنگل و صنوبر ایران, 2007
Managers of logging operation are faced with profit reduction due to rapid increases in equipment costs, rapid depreciation of equipment and changing logging systems from harvesting the large trees to the smaller ones.
Mahtab Pir Bavaghar   +4 more
doaj  

Energy-efficient off-body communication nodes with receive diversity [PDF]

open access: yes, 2013
Off-body wireless communication applications range from fall-detection systems for the elderly to monitoring networks for rescue workers. Further development of practical body-worn systems requires compact, low-cost and low-power battery-powered ...
Moerman, Ingrid   +3 more
core   +1 more source

A simple, low-cost, data-logging pendulum built from a computer mouse

open access: yes, 2009
Lessons and homework problems involving a pendulum are often a big part of introductory physics classes and laboratory courses from high school to undergraduate levels.
Gintautas, Vadas, Hubler, Alfred
core   +1 more source

Balloon logging with the inverted skyline [PDF]

open access: yes, 1975
There is a gap in aerial logging techniques that has to be filled. The need for a simple, safe, sizeable system has to be developed before aerial logging will become effective and accepted in the logging industry.
Mosher, C. F.
core   +1 more source

Detection of circulating tumor DNA in colorectal cancer patients using a methylation‐specific droplet digital PCR multiplex

open access: yesMolecular Oncology, EarlyView.
We developed a cost‐effective methylation‐specific droplet digital PCR multiplex assay containing tissue‐conserved and tumor‐specific methylation markers. The assay can detect circulating tumor DNA with high accuracy in patients with localized and metastatic colorectal cancer.
Luisa Matos do Canto   +8 more
wiley   +1 more source

Research on Prediction Method of Volcanic Rock Shear Wave Velocity Based on Improved Xu–White Model

open access: yesEnergies, 2022
Volcanic rock reservoirs have received extensive attention from scholars all over the world because of their geothermal, mineral, and oil and gas resources.
Hanqing Qiao, Bing Zhang, Cai Liu
doaj   +1 more source

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