Preliminary Research the Influence of Different Voltage Level on Composite Insulator Sheds using FTIR

2013 ◽  
Author(s):  
Ying Liang ◽  
Xiaohui Yang ◽  
Yunpeng Liu
Keyword(s):  
Composite Insulator ◽  
Voltage Level ◽  
Preliminary Research

Preliminary research of the aldosterone synthesized by bone morrow stem cells of adult male ratsin vitro

2010 ◽  
Vol 34 (8) ◽  
pp. S43-S43
Author(s):  
Wei‑ying Zou ◽  
Bei Yang ◽  
Xiuli Ni ◽  
Da‑lei Zhang ◽  
Lei Wu ◽  
...  
Keyword(s):  
Stem Cells ◽  
Adult Male ◽  
Preliminary Research ◽  
Bone Morrow

Cross-Cultural Validity of Career Calling in Korea: Preliminary Research

2011 ◽  
Author(s):  
Taesun Kim ◽  
Lawrence H. Gerstein ◽  
Stefania Aegisdottir
Keyword(s):  
Cross Cultural ◽  
Cultural Validity ◽  
Preliminary Research ◽  
Career Calling

Dependence of Current Harmonics of Greenhouse Irradiators on Supply Voltage

2020 ◽  
pp. 85-88 ◽  
Author(s):  
Nadezhda P. Kondratieva
Keyword(s):  
Mathematical Models ◽  
Supply Voltage ◽  
Harmonic Distortion ◽  
Feasibility Studies ◽  
Power Losses ◽  
Voltage Level ◽  
Supply Networks ◽  
Current Harmonics ◽  
Cable Lines ◽  
Harmonic Composition

The article describes the results of the study concerning the effect of the voltage level on current harmonic composition in greenhouses irradiators. It is found that its change affects the level of current harmonics of all types of the studied greenhouse irradiators. With decrease of nominal supply voltage by 10 %, the total harmonic distortion THDi decreases by 9 % for emitters equipped with high pressure sodium lamps (HPSL), by 10 % for emitters with electrode-less lamps and by 3 % for LED based emitters. With increase of nominal supply voltage by 10 %, THDi increases by 23 % for lighting devices equipped with HPSL, by 10 % for irradiators with electrode-less lamps and by 3 % for LED based emitters. Therefore, changes of supply voltage cause the least effect on the level of current harmonics of LED based emitters and then the emitters with electrode-less lamps. Change of the level of supply voltage causes the greatest effect on the level of current harmonics of HPSL based irradiators. Mathematical models of dependence of THDi on the level of supply voltage for greenhouse emitters equipped with LED, electrode-less lamps and HPSL lamps were formulated. These mathematical models may be used for calculations of total current when selecting transformers and supply cable lines for greenhouse lighting devices, for design of new or reconstruction of existing irradiation systems of greenhouse facilities, and for calculation of power losses in power supply networks of greenhouse facilities during feasibility studies for energy saving and energy efficiency increasing projects.

Ricerca preliminare sulla valutazione Italiana dell'Internet Disorder Scale – Short Form (IDS9-SF)

2019 ◽  
Author(s):  
Paolo Soraci
Keyword(s):  
Social Networks ◽  
Factor Analysis ◽  
Data Analysis ◽  
Concurrent Validity ◽  
Short Form ◽  
Analysis Techniques ◽  
Validity Criterion ◽  
Preliminary Research ◽  
Nomological Validity ◽  
Italian Territory

The purpose of this study is to create a new tool capable of diagnosing the severity of internet addiction (IA) and is based on the nine IGD criteria. These same criteria were suggested by the APA in the last edition of the DSM-51. A sample was recruited with a method of convenience and 300+ participants were recruited through different forums and social networks. The construct validity of the IDS9SF test was achieved through factor analysis and nomological validity. The concurrent validity, criterion and reliability of the test itself have been thoroughly investigated through the most common and consolidated data analysis techniques, confirming that the same test has sufficient psychometric properties to be used also in the Italian territory. Furthermore it is necessary to remember that this preliminary research is only valid in the field of data and statistics with all the limitations of the case and cannot be used for a real clinical evaluation.

Bottled Water Industry in Brunei Darussalam: The Unregulated Sector?

2020 ◽  
Vol 2 (2) ◽  
pp. 149-165
Keyword(s):  
Bottled Water ◽  
Water Industry ◽  
Valuable Resource ◽  
Water Supplies ◽  
The Public ◽  
Available Water ◽  
Brunei Darussalam ◽  
Preliminary Research ◽  
Water Companies ◽  
The Government

Brunei is seeing a proliferation of bottled companies established in the country in the last decade, driven by cheap water supplies, easily available water filtering systems and demand by the public. This research found 16 ‘companies,’ ‘producing’ and distributing over 34 brands of bottled waters in the country. Since bottled water industry is ‘popular,’ it is necessary to understand how the industry is being monitored and regulated by the government as it involved products consumed by the public. Since most of the bottled water companies use water drawn from the pipes supplied by the government, it is also important to understand how the government is protecting, monitoring and regulating this valuable resource from exploitation. This paper is a preliminary research on the bottled water industry in Brunei Darussalam.

Preliminary research on isotopic composition of water vapor in irrigated fields

2012 ◽  
Vol 19 (5) ◽  
pp. 1060-1066 ◽  
Author(s):  
Yu-Cui ZHANG ◽  
Ying-Zhe CAI ◽  
Parkes Stephen ◽  
McCabe Matthew F. ◽  
Fan YANG ◽  
...  
Keyword(s):  
Water Vapor ◽  
Isotopic Composition ◽  
Preliminary Research
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