Influence of the Diameter of Sections on Electrochemical Thermodynamics of Nanorod Electrodes: Theoretical and Experimental Research Studies

2021 ◽  
Author(s):  
Zuohui Cheng ◽  
Huijuan Duan ◽  
Yongqiang Xue ◽  
Jinzhong Zhao ◽  
Xing Yu ◽  
...  
Keyword(s):  
Experimental Research ◽  
Electrochemical Thermodynamics ◽  
Research Studies

scholarly journals Methodology Appraisal of Experimental Research Studies in Mathematics Teaching

2019 ◽  
Vol 5 (1) ◽  
pp. 40-45
Author(s):  
Capote Paul John
Keyword(s):  
Learning Strategies ◽  
Experimental Research ◽  
Teaching And Learning ◽  
Research Problem ◽  
Effect Sizes ◽  
P Value ◽  
Experimental Teaching ◽  
Teaching And Learning Strategies ◽  
The Mean ◽  
Research Studies

This study made use of Gene Glass Effect Size formula to estimate the mean effect sizes of the eleven (11) reviewed experimental research studies on the effect of experimental and conventional teaching and learning strategies to the academic performance of students in mathematics. A validated Inclusion Criteria was utilized in the selection of studies and a modified Methodology Appraisal Checklist was employed in the analysis of elements of the research problem and research methodology. The mean effect sizes and variances of the reviewed studies vary across the elements of the research problem and methodology, an indication that teaching and learning strategies are dependent on the quality of methodology used by the researcher. This study stressed that there is no enough evidence to prove that experimental teaching and learning strategies are more effective than conventional pedagogies in improving learnings in math, as the analysis of variance (ANOVA) revealed a p-value of 0.982 (critical value=0.05).

Internal Validity of Group Experimental Research

1983 ◽  
Vol 4 (3) ◽  
pp. 77-83
Author(s):  
Jean R. Harber
Keyword(s):  
Research Design ◽  
Experimental Research ◽  
Internal Validity ◽  
Experimental Designs ◽  
Causal Relationships ◽  
Control Groups ◽  
Quasi Experimental ◽  
Research Studies

This article stresses the importance of controlling extraneous variables when studying educational problems. Various types of research studies are described. The experimental research design, which is ideally suited to detecting causal relationships if proper controls are used, and quasi-experimental procedures, which are employed when true experimental designs cannot be used, are discussed. Threats to internal validity are presented and hypothetical examples are given to illustrate these threats and the means of controlling them. The importance of utilizing control groups is illustrated.

scholarly journals Experimental Research of Paperboard Cutting in Die Cutting Press with the Screw–Nut Transmission of Drive Mechanism of a Movable Pressure Plate

2021 ◽  
Vol 15 (3) ◽  
pp. 122-131
Author(s):  
Serhii Ternytskyi ◽  
Ivan Rehei ◽  
Nazar Kandiak ◽  
Ihor Radikhovskyi ◽  
Oksana Mlynko
Keyword(s):  
Experimental Research ◽  
Drive Shaft ◽  
Practical Implementation ◽  
Fibre Direction ◽  
Pressure Plate ◽  
Drive Mechanism ◽  
Cutting Velocity ◽  
Torque Values ◽  
The Impact ◽  
Research Studies

Abstract This paper reports experimental research of torques during paperboard cutting in the die cutting press with the screw–nut transmission in the drive mechanism of the movable pressure plate. The purpose of the study is to substantiate the practical implementation of the pressure plate drive mechanism with the use of screw–nut transmission for the production of cartons of paperboard blanks. The manufactured experimental bench for the research of paperboard blanks provides the possibility of getting dependencies of loads on different parameters of the die cutting process. The developed method of the experimental research envisages the use of the strain gauge method and the wireless module for data measurement and software for its processing that allow getting trustworthy results with minimum faults. As a result of experimental research studies, the impact of paperboard thickness and cutting velocity on torque values has been established. Results of experimental research allow getting trustworthy and systematised information about torque values depending on the thickness of the paperboard, the paperboard fibre direction and pressure plate displacement velocity. It is established that torque values on drive shaft during die cutting of paperboard blanks made of folding boxboard with thickness that lay in range of 0.3–0.7 mm. Experimental research studies show the impact of rotation speed of a drive shaft of the pressure plate drive mechanism on the torque value. The article shows the workability of the designed device with screw–nut transmission in the drive mechanism of a movable pressure plate.

The neuropharmacological preclinical effects of Nigella Sativa: A review

2021 ◽  
Vol 17 ◽  
Author(s):  
Youness Kadil ◽  
Houda Filali
Keyword(s):  
Experimental Research ◽  
Nigella Sativa ◽  
Present Review ◽  
Google Scholar ◽  
Pharmacological Properties ◽  
Aromatic Plants ◽  
Central Effects ◽  
Research Studies

Background: Many researches papers have demonstrated that Nigella has neurotropic properties, and it has also been shown that Nigella seeds have several activities, such as analgesic, antiepileptic, anxiolytic, antidepressant, and psychostimulant activities. Methods: Databases such as PubMed, Science Direct, Scopus, and Google Scholar were used. Results : The orientation towards this type of research has become more and more accentuated to enhance and detail the pharmacological properties of medicinal aromatic plants. Conclusion : The present review consists in revealing and combining the experimental research studies carried out to demonstrate the central effects of nigella.

Computational study on C–B homolytic bond dissociation enthalpies of organoboron compounds

2017 ◽  
Vol 41 (3) ◽  
pp. 1346-1362 ◽  
Author(s):  
JiaoYang Wang ◽  
WenRui Zheng ◽  
LanLan Ding ◽  
YingXing Wang
Keyword(s):  
Experimental Research ◽  
Theoretical Study ◽  
Computational Study ◽  
Organoboron Compounds ◽  
Bond Dissociation ◽  
Research Studies

The theoretical study of three hybridized C–B BDEs with different substituents can provide corresponding guidance to experimental research studies.

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