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3.920  Articles
1 of 392 pages  |  10  records  |  more records»
The article is devoted to questions of the admitted speeds establishment of various tipes of freight 4 axis cars movement with carriages 18-100 (????-?3), in empty and full a condition. The results of the complex researches of dynamic qualities of the car... see more

In clause offers on technology of performance of modernization of a way are formulated on is long the closed site. On the basis of the analysis of results theoretical and experimental researches recommendations on an establishment of admitted speeds of mo... see more

The features of determination of the permissible speeds in curves without easement curves are considered.

Purpose. Studies of the effect of aerodynamic pressure on the maximum permissible speeds of a high-speed train on the existing railway infrastructure. Methodology. The study of the magnitude and direction of the aerodynamic pressure, its effect on the max... see more

This study explored the relationship between travel speeds and accidents on single-carriageway roads, accounting for traffic exposure and road infrastructure characteristics. The speed data are free-flow travel speeds collected by GPS devices inside the v... see more

Adolescents with failure tend to make self-esteem feel dissatisfied with themselves and their sense of wanting to be someone else, more often experience negative emotions, difficult to accept failure and excessive disappointment when failing. The purpose ... see more

Background: Dengue infection is endemic in more than 100 countries; 70% of cases occur in Asia. One of dengue infection complication is hepatic dysfunction. The COVID-19 pandemic may cause a delay in seeking treatment and affect severe case of dengue infe... see more

Objectives: To determine the frequency of vaccination status in patients with SARS-CoV-2 infectionMethods: This case-control study was conducted at Dr Ruth KM Pfau Civil Hospital Karachi, Pakistan between September 2021 to October 2021. All patients who h... see more

Prior to COVID-19, dengue was an important public health problem in Malaysia. Due to the movement control order imposed by the Malaysian government to curb the COVID-19 transmission, a study predicted that mosquito-bornediseases would increase during... see more

1 of 392 pages  |  10  records  |  more records»