Factors influencing green transformation efficiency in China's mineral resource-based cities: Method analysis based on IPAT-E and PLS-SEM

2021 ◽  
pp. 129783
Author(s):  
Qing Yin ◽  
Yadong Wang ◽  
Zhehong Xu ◽  
Kaidi Wan ◽  
Delu Wang
Genome ◽  
2002 ◽  
Vol 45 (2) ◽  
pp. 421-430 ◽  
Author(s):  
A Pellegrineschi ◽  
L M Noguera ◽  
B Skovmand ◽  
R M Brito ◽  
L Velazquez ◽  
...  

The efficiency of wheat biolistic transformation systems strongly depends on the bombardment parameters, the condition of the donor plant, and the plant genotype chosen for the transformation process. This paper analyzes the transformation efficiency of the 129 wheat sister lines generically called 'Bobwhite', originally obtained from the cross 'Aurora'//'Kalyan'/'Bluebird 3'/'Woodpecker'. A number of factors influencing the transformation were examined, such as the ability to produce embryogenic callus, regeneration in selection medium, and overall transformation performance. Of the 129 genotypes evaluated, eight demonstrated transformation efficiencies above 60% (60 independent transgenic events per 100 immature embryos bombarded). Among the eight genotypes identified, we studied agronomic characteristics such as earliness to identify the most adaptable line(s) for different lab conditions. 'Bobwhite' SH 98 26 was identified as a super-transformable wheat line.Key words: wheat transformation, 'Bobwhite', genotype effect.


2020 ◽  
Vol 12 (22) ◽  
pp. 9455
Author(s):  
Qing Yin ◽  
Yadong Wang ◽  
Kaidi Wan ◽  
Delu Wang

With sustained and rapid economic growth, environmental degradation and resource depletion are becoming increasingly prominent in Chinese mineral resource-based cities (MRBC). An in-depth study regarding the efficiency and characteristics of urban green transformation in recent years will help to promote the healthy development of MRBC in China. In this study, we use a three-stage data envelopment analysis model to evaluate the green transformation efficiency and potential of 110 MRBC in China from 2008 to 2017. The results show that, first, the comprehensive green transformation efficiency in the vast majority of MRBC is relatively low. After excluding external factors, the efficiency of most MRBC is considerably improved. Second, regardless of whether the external factors are excluded, the green transformation efficiency in the western and northeast regions of China is relatively higher than that in the central and eastern regions, whereas the coal cities and ferrous cities have higher efficiencies compared with non-ferrous cities and oil cities. Third, compared with pure technology efficiency, scale efficiency plays a leading role in overall green transformation efficiency. Based on the empirical analysis results, this study indicates that China’s MRBC should pay special attention to the influence of external environmental factors when formulating green transformation policies.


2009 ◽  
Vol 29 (3) ◽  
pp. 165-170 ◽  
Author(s):  
Ki-Won Lee ◽  
Ki-Yong Kim ◽  
Joung-Kyong Lee ◽  
Hyung-Soo Park ◽  
Kyung-Hee Kim ◽  
...  

Author(s):  
Lei Zhu ◽  
Segen F. Estefen ◽  
Nilo de Moura Jorge ◽  
John H. Chujutalli ◽  
Marcelo Igor Lourenço Souza

A subsea Blowout Preventer system plays an extremely important role in providing safe working conditions for drilling activities in deepwater oil exploration. However, estimating the performance of Shear Ram Blowout Preventeris still a challenge for the industry. This paper considers different scenarios that may influence the shear capability of a typical subsea Blind Shearing Ram: the pipe size, ram shape, preload of pipe, off-center distance and tool joint of pipe. Element method analysis is conduct on the Abaqus software to calculate the maximum required shearing force for each scenario. Results of those simulations are collected and analyzed according to mechanic theories and oil field experience. Furthermore, some recommendations are offered both in theoretical and practical aspects to build the criterion for the shear ability of a specific type of Blind Shearing Ram. Factors influencing shearing capabilities have been listed according to the result of the numerical simulation.


2014 ◽  
Vol 1 (6) ◽  
pp. 186
Author(s):  
Anda Zvaigzne ◽  
Inese Saulāja ◽  
Aija Čerpinska

Competitiveness in the labour market is a range of various factors that assist an employee in getting or retaining a job, while an employer can attract and maintain a labour force adequate to meet the employer’s needs. The research aim is to examine the competitiveness of women in the labour market in Latvia and to develop proposals for its improvement. The present research deals with employment trends, especially focusing on statistical data on women. The research also examines statistical data on job vacancies, unemployment, wages, and other related data. To identify the factors influencing women’s competitiveness, 214 women were surveyed in Latgale region. According to the survey, there are several factors influencing women’s competitiveness in the labour market. Education, length of service, and experience are the most significant factors. The longer women’s unemployment period is, the more these women require support to restart their employment and to be competitive in the labour market. Research methods employed: the monographic method, the descriptive method, analysis and synthesis, the graphic method, document analysis, statistical analysis, and a sociological method – a survey. The survey results were processed using the tools of the Statistical Package for the Social Sciences (SPSS) and Microsoft Excel


Author(s):  
Julie A. Martini ◽  
Robert H. Doremus

Tracy and Doremus have demonstrated chemical bonding between bone and hydroxylapatite with transmission electron microscopy. Now researchers ponder how to improve upon this bond in turn improving the life expectancy and biocompatibility of implantable orthopedic devices.This report focuses on a study of the- chemical influences on the interfacial integrity and strength. Pure hydroxylapatite (HAP), magnesium doped HAP, strontium doped HAP, bioglass and medical grade titanium cylinders were implanted into the tibial cortices of New Zealand white rabbits. After 12 weeks, the implants were retrieved for a scanning electron microscopy study coupled with energy dispersive spectroscopy.Following sacrifice and careful retrieval, the samples were dehydrated through a graduated series starting with 50% ethanol and continuing through 60, 70, 80, 90, 95, and 100% ethanol over a period of two days. The samples were embedded in LR White. Again a graduated series was used with solutions of 50, 75 and 100% LR White diluted in ethanol.


1965 ◽  
Vol 8 (4) ◽  
pp. 323-347
Author(s):  
Robert Goldstein ◽  
Benjamin RosenblÜt

Electrodermal and electroencephalic responsivity to sound and to light was studied in 96 normal-hearing adults in three separate sessions. The subjects were subdivided into equal groups of white men, white women, colored men, and colored women. A 1 000 cps pure tone was the conditioned stimulus in two sessions and white light was used in a third session. Heat was the unconditioned stimulus in all sessions. Previously, an inverse relation had been found in white men between the prominence of alpha rhythm in the EEG and the ease with which electrodermal responses could be elicited. This relation did not hold true for white women. The main purpose of the present study was to answer the following questions: (1) are the previous findings on white subjects applicable to colored subjects? (2) are subjects who are most (or least) responsive electrophysiologically on one day equally responsive (or unresponsive) on another day? and (3) are subjects who are most (or least) responsive to sound equally responsive (or unresponsive) to light? In general, each question was answered affirmatively. Other factors influencing responsivity were also studied.


1950 ◽  
Vol 16 (1) ◽  
pp. 194-210 ◽  
Author(s):  
Frederick W. Hoffbauer ◽  
Jesse L. Bollman ◽  
John L. Grindlay

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