scholarly journals Experimental Study on Factors Affecting the Recovery of Nickel from Spent Catalyst

2017 ◽  
Vol 06 (01) ◽  
Author(s):  
Khalid MM ◽  
Athraa BA
Keyword(s):  
Experimental Study ◽  
Spent Catalyst ◽  
Factors Affecting

scholarly journals Protocol for a quasi-experimental study examining the effect of a ball skills intervention on four domains of preschooler development

2021 ◽  
Vol 22 ◽  
Author(s):  
Hua Wu ◽  
Wichai Eungpinichpong ◽  
Hui Ruan ◽  
Xinding Zhang ◽  
Sansan Wang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Motor Development ◽  
Self Regulation ◽  
Ecological Factors ◽  
Pilot Project ◽  
Background Information ◽  
Factors Affecting ◽  
Quasi Experimental ◽  
The Impact ◽  
Ball Skills

Abstract Background: Preschooler inactivity and insufficient motor development have serious long-term consequences. The Chinese Ministry of Education launched a nationwide football-focused pilot project aimed at kindergartens in 2019 and issued the policy “Notice on the Establishment of National Football Kindergartens” in 2020. However, the impact of fundamental movement skills (FMS) interventions on other aspects of child development is unclear. Aim: This study will evaluate the effects of ball skills physical education projects on the development of Chinese preschoolers’ physical, motor, cognitive, and social competencies and examine the influencing factors. Method: This is a quasi-experimental study evaluating how well the “Hello Sunshine” curriculum project promotes children’s development over 10 weeks. The trial will be conducted from September 2021 to November 2021 in 12 classes from 3 kindergartens with a total of 249 children aged 4 to 6 years in Haikou, China. Pre- and posttest analyses will include tests on participants’ physical fitness, FMS, cognitive self-regulation, and emotional competence. Participants’ background information will be collected through questionnaires answered by parents and teachers. The intervention will focus on game-based basic ball skills. Findings: If this intervention provides evidence that these skills improve children’s multidimensional development, it will support the promotion of similar programs in China. We will also outline the social-ecological factors affecting the intervention’s results, providing further information for improving pedagogical methods related to preschool ball skills.

Experimental study on factors affecting the end effect in gas viscosity measurement using capillary-tube viscometer

2019 ◽  
Vol 90 (7) ◽  
pp. 074101
Author(s):  
Xin Fang ◽  
Xiang’an Yue ◽  
Joseph Y. Fu ◽  
Weiqing An ◽  
Jirui Zou ◽  
...  
Keyword(s):  
Experimental Study ◽  
Capillary Tube ◽  
Viscosity Measurement ◽  
End Effect ◽  
Factors Affecting ◽  
Gas Viscosity

scholarly journals Experimental Study of Factors Affecting Hypergolic Ignition of Ammonia Borane

2020 ◽  
pp. 1-9
Author(s):  
Kathryn A. Clements ◽  
Michael J. Baier ◽  
P. Veeraraghavan Ramachandran ◽  
Steven F. Son
Keyword(s):  
Experimental Study ◽  
Ammonia Borane ◽  
Factors Affecting

Experimental study on the repeatability of positioning of linear axes of machine tools

2019 ◽  
Vol 234 (4) ◽  
pp. 739-751
Author(s):  
Guangming Sun ◽  
Gaiyun He ◽  
Dawei Zhang ◽  
Bohui Ding
Keyword(s):  
Experimental Study ◽  
Machine Tools ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Experimental Investigations ◽  
Single Factor ◽  
Factors Affecting ◽  
Assembly Method ◽  
Orthogonal Experiments ◽  
Control Machine

This study presents experimental investigations on the mechanisms of the repeatability of positioning of linear axes of computer numerical control machine tools. First, the factors affecting the repeatability of positioning of linear axes are obtained based on orthogonal experiments. Second, the mechanism of each factor affecting the repeatability of positioning is studied based on single-factor experiments. Finally, an assembly method to improve the repeatability of positioning of linear axes is proposed. The method can provide designers and workers with informative guidelines for improving the repeatability of positioning in design and assembly processes.

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