Suggested Topics within your search.
Suggested Topics within your search.
-
1161
Key technologies of efficient extraction of coalbed methane (gas) in Guizhou coal mine area
Published 2025-03-01“…It innovated and explored the following high efficiency extraction technology of “four zones” linked Wells in coal mining areas with Guizhou characteristics: ① By laying multi-functional pumping vertical Wells or small inclination oriented Wells in the goaf, it was the first time in Guizhou to realize efficient extraction and development of pressure relief gas in the overlying coal-covered strata and coal-bed methane in the sweet coal seam below the goaf; ② Taking advantage of the characteristics of spatial and temporal dislocation in the production area, the multi-mode extraction mode of “coalbed methane well + relief well + underground drilling” is adopted for the first coal seam mined in the upper protective layer, which realizes the purpose of the upper and lower vertical combined extraction of coalbed methane (gas) Wells and effectively solves the problem of multi-source gas flooding into coal mining roadway and gas accumulation in the upper corner during coal mining under the condition of coal seam group development in Guizhou; ③ In the preparation area and planning area, combined with the terrain and geological characteristics of the two areas, the horizontal well “well factory” + “two pairs of right and wrong” overlapping well layout mode is adopted to realize the efficient extraction of coal bed methane in the plane in advance and pre-pumping of the sweet coal seam and the pressure relief gas in the overlying coal-laden rock in the subsequent mining process, and at the same time to achieve the goal of “replacing the roadway with Wells”; ④ In view of the development of multi-thin coal seam groups in the study area and the development characteristics of “three zones” in the overlying strata after mining, due to the continuous change of the role of “four zones”, the surface coalbed methane Wells are initially deployed in the production area or preparation area, and the “bridge plug bottom sealing + layer selection perforation” technology is adopted to innovate the “transformation” technology of well structure to achieve the purpose of “multi-purpose in one well”; It also provides new technical ideas and accumulated valuable engineering experience for gas management in coal mine area under the condition of multi-thin coal seam group development in Guizhou.…”
Get full text
Article -
1162
The Pore Diffusion Coefficient of Iodide Ion in Rock Samples Using X-ray K-edge Imaging
Published 2023-08-01“…When the contamination source is removed after remediation, the contaminated porewater can be a long-term contamination source to the groundwater in fractures via back diffusion. …”
Get full text
Article -
1163
Evaluation of engineering, physiochemical and nutritional properties of three different varieties of pomelo fruit
Published 2025-03-01“…Purpose: The aim of this study was to identify the engineering, physiochemical, and nutritional properties of selected varieties of pomelo fruit. Research method: The study was carried out using a one-way analysis of variance with three replications on selected varieties of pomelo fruit. …”
Get full text
Article -
1164
Presepsin as a sepsis biomarker
Published 2018-05-01“…The measured levels of presepsin are significantly influenced by renal function; therefore, in patients with renal disease, other sepsis markers should be used or the normal presepsin levels should be adjusted to higher values. …”
Get full text
Article -
1165
An Intelligent Inspection and Scheduling Algorithm for Integrated Pipe Gallery Based on Cloud Robot
Published 2020-01-01“…The algorithm has very strong exploring precision and variable function, which makes this algorithm of fewer iterations, and can effectively improve the real-time detection of pipeline leakage source in pipeline corridor. …”
Get full text
Article -
1166
Recombinant Tissue Plasminogen Activator Induces Neurological Side Effects Independent on Thrombolysis in Mechanical Animal Models of Focal Cerebral Infarction: A Systematic Review...
Published 2016-01-01“…Subgroup analysis, meta-regression and sensitivity analysis were performed to explore sources of heterogeneity. Funnel plot, Trim and Fill method and Egger's test were obtained to detect publication bias.…”
Get full text
Article -
1167
Soil methane emission suppression control using unmanned aircraft vehicle swarm application of biochar mulch - A simulation study
Published 2023-05-01“…In this paper, we present a soil methane emissions suppression approach using swarms of unmanned aerial vehicles (UAVs), by spreading biochar mulch on top of the detected methane emissions area/source. Soil microorganisms can produce methane and release it into the atmosphere causing climate change such as global warming. …”
Get full text
Article -
1168
SMART Based Multi-Point Matching Assisted Approximation of Renewable Interconnected Power System
Published 2025-01-01“…The errors between expansion parameters obtained in terms of coefficients of HO HPP system and its RO model are minimized around selected multi-points, further. For the error minimization, objective function is framed. …”
Get full text
Article -
1169
Simultaneous removal and optical determination of mercury ions by constructing fluorescent recombinant T. thermophila SB210 strains
Published 2025-06-01“…Removing and monitoring Hg2+ ions in the pollution sources based on microorganisms have the advantages of low cost and convenience. …”
Get full text
Article -
1170
Genetic assessment of farmed Oreochromis mossambicus populations in South Africa
Published 2025-04-01Get full text
Article -
1171
Wave-packet manipulation of He Rydberg states by a seeded free-electron laser
Published 2024-12-01“…The He atoms were postionized by infrared (IR) pulses, and the ion yield was measured as a function of XUV phase and IR arrival time. We tagged and sorted the relative phase of the XUV pulse pair on a single-shot basis by fitting each FEL spectrum with a suitable function that accounts for nonidealities of the XUV pulse pairs, associated with the seeding process; more generally, the fit returns the time-dependent electric field of the FEL spectra. …”
Get full text
Article -
1172
A Robust InSAR-DEM Block Adjustment Method Based on Affine and Polynomial Models for Geometric Distortion
Published 2025-04-01“…Additionally, we select additional Sentinel-1 and Copernicus DEM data to verify the reliability of multi-source DEM matching and adjustment. …”
Get full text
Article -
1173
Neural Correlates of Changes in a Visual Search Task due to Cognitive Training in Seniors
Published 2012-01-01“…This study aimed to elucidate the underlying neural sources of near transfer after a multidomain cognitive training in older participants in a visual search task. …”
Get full text
Article -
1174
Cost-Effective Photoacoustic Imaging Using High-Power Light-Emitting Diodes Driven by an Avalanche Oscillator
Published 2025-03-01“…While lasers have traditionally been the light source for PAI, their high cost and complexity drive interest towards alternative sources like light-emitting diodes (LEDs). …”
Get full text
Article -
1175
A Gradient Grating Period Guided-Mode Resonance Spectrometer
Published 2018-01-01“…In this study, a GGP-GMR spectrometer less than 3 mm long that can achieve a wavelength detection range of 200 nm was demonstrated to reconstruct various incident spectra, including a single wavelength of light with a resolution of 0.5 nm, a single wavelength of light with varying intensity levels, and dual incident light sources.…”
Get full text
Article -
1176
Characteristics of Plasmodium vivax apicomplexan amino acid transporter 8 (PvApiAT8) in the cationic amino acid transport
Published 2025-02-01“…PvApiAT8 was sodium-independent and functioned at pH levels between 6.5 and 8.5, with no efflux activity observed. …”
Get full text
Article -
1177
In Vivo Assessment of Bone Regeneration in Alginate/Bone ECM Hydrogels with Incorporated Skeletal Stem Cells and Single Growth Factors.
Published 2015-01-01“…The proposed hydrogel system functioned without the need for growth factor incorporation or an exogenous inducible cell source. …”
Get full text
Article -
1178
The effect of exercise on the immune response in different environmental conditions
Published 2014-10-01“…It is illustrated that abnormal environments are the primary source of physiological stresses which can disarrange the function of immune system. …”
Get full text
Article -
1179
Comparative analysis of gut symbionts in Tribolium castaneum (Coleoptera: Tenebrionidae) and their dietary substrate, sauce-flavored Daqu
Published 2025-07-01“…., Weissella) were scarce in guts (0.6%) and vice versa. Fungal source tracking revealed SFD contributed 89–94% of gut fungi, vastly exceeding bacterial inputs (2.8–5%). …”
Get full text
Article -
1180
Suspensory Materials for Surgery of Blepharoptosis: A Systematic Review of Observational Studies.
Published 2016-01-01“…The following materials were investigated: Fascia Lata, Mersilene, polytetrafluoroethylene (PTFE) and Silicon.<h4>Data source and methods</h4>Following the Prisma procedure, on January 30th, 2016 we used the following electronic databases to select the studies: MEDLINE and Scopus.…”
Get full text
Article