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7662
Study on aerodynamic drag and noise reduction of high-speed pantograph with streamwise holes
Published 2025-12-01“…Adding streamwise holes to the panhead results in a 20.81% reduction in aerodynamic drag and lowers the far-field noise level by 1.41 dBA. The research results can provide data support and reference for the development of higher speed pantograph.…”
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7663
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7664
One pot oxidative ethyl acetate synthesis using palladium activated SBA-15 type catalysts
Published 2025-02-01Get full text
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7665
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7666
Carbon emission of urban vehicles based on carbon emission factor correlation analysis
Published 2025-01-01“…This study is of great significance for energy conservation and emission reduction in road transportation.…”
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7667
Osteoporosis Screening Disparities among Ethnic and Racial Minorities: A Systematic Review
Published 2023-01-01“…Future efforts should focus on addressing these inconsistencies in screening and removing bias from the healthcare system. Additional research is required to determine the consequence of this discrepancy in screening and methods of equitizing osteoporosis care.…”
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7668
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7669
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7670
Static load sharing performance of non-orthogonal and offset helical face gear dual-branch drivetrain
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7671
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7672
Spatial-temporal Evolution of the Normalized Difference Vegetation Index (NDVI) in the Huaihe River Basin from 1999 to 2018
Published 2023-01-01“…Vegetation is one of the main participants in the global carbon cycle and plays an important role in land surface water transport and energy transmission.Based on the normalized difference vegetation index (NDVI) of the Huaihe River Basin (HRB) from 1999 to 2018,the spatial-temporal evolution law of NDVI was studied on three time scales (month,quarter,and year) through the Mann-Kendall trend test and empirical orthogonal function (EOF) decomposition.The following findings are obtained.① Affected by crop maturity and different landforms,the multi-year average values of monthly NDVI in the HRB present an M-shaped distribution as a whole,and there are some differences in the mean value and variation range of NDVI in different sub-basins.② In the downstream area with more farmlands,the NDVI shows an insignificant downward trend in summer and winter,while in other three sub-basins of the river,the NDVI follows an upward trend in all seasons,especially in spring and autumn.③ The annual NDVI of the basin exhibits a significant upward trend,which is the same as the global greening trend.This also indicates that returning cropland back to forests and other soil and water conservation measures have achieved remarkable results in vegetation restoration and ecological protection in the basin for the past 20 years.④ The spatial distribution of NDVI modes in the HRB shows simultaneous increases or decreases overall,with a great difference existing between the western and eastern areas.Vegetation coverage gradually decreases from inland to coastal.These research results can provide a reference basis for understanding the vegetation restoration characteristics and protecting the ecological environment in the HRB.…”
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7673
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7674
Youth and Socialization Spaces: A Field Study on Prediction of Risky Alcohol Use by Need for Social Approval and Drinking Motives in Alcohol-Using University Students
Published 2024-12-01“…The cross-sectional study was conducted as field research in campus cafes and “Küçükpark” in May–July 2024. 429 university students who were using alcohol were evaluated using the Addiction Profile Index Risk Screening-Alcohol, Drinking Motives Questionnaire-Revised, and Need for Social Approval Scale. …”
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7675
Influence of Base Rock Deterioration on Tunnel Bottom Structure Damage under Train Excitation
Published 2023-01-01Get full text
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7676
A description on decadal changes in warm season average of precipitation over the Caspian coast of Iran territory
Published 2022-03-01“…Change in precipitation amount, especially in warm season, may influences climato-environmental phenomenon as well as human activity. In current research the decadal changes of monthly precipitation over the Caspian coast of Iran territory was evaluated. …”
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7677
Prospect Analysis of Paleocene Coalbed Methane: A Case Study of Hangu Formation, Trans-Indus Ranges, Pakistan
Published 2022-01-01“…Further, the brittle and ductile properties of minerals influence in the extraction of the methane from the coal seams. In this research, Coalbed methane prospect is demonstrated by analysing the Hangu Formation’s coal seam of Trans-Indus Ranges, Pakistan. …”
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7678
Ranking Analysis for Online Customer Reviews of Products Using Opinion Mining with Clustering
Published 2018-01-01Get full text
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7679
Rancang Bangun Generator HHO untuk Aplikasi pada Engine 1108 Cm3
Published 2020-07-01“…Water electrolytic devices are called HHO generators, HHO generators use pure water electrolysis, the results of the meeting between H2 and O2 will be used as alternative fuels in meeting renewable energy needs. This research uses a HHO generator. …”
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7680
Application and Development Trend of Laser Technology in Food 3D Printing
Published 2025-01-01Get full text
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