Influence of differential leadership on teachers' professional ethics: an empirical study from Chinese universities

Zhu, Yong-yue,Guo, Min-yu 서울대학교 교육연구소 2021 Asia Pacific Education Review Vol.22 No.3

In Chinese society, the teachers’ professional ethics have been considered important since ancient times and have been widely discussed. This paper aims to explore the mechanism of the infuence of diferential leadership with local cultural adapt‑ ability on college teachers’ professional ethics. A total of 403 valid responses were collected from a questionnaire survey of university teachers in many regions of China, and the data were statistically analysed by SPSS17.0 and AMOS22.0. The results showed that diferential leadership positively infuences college teachers’ professional ethics, and college teachers’ professional identity plays a mediating role between diferential leadership and teachers’ professional ethics. The efect of diferential leadership on college teachers’ professional identity and professional ethics is negatively moderated by the tendency towards collectivism, and it seems to be contrary to the national culture of Chinese, which is high in collectivism, but consistent with the strong will of college teachers and the current workplace characteristics embodied in the sample investigated. It is expected that the research results of this paper can provide theoretical guidance for the construction of teachers’ professional ethics in relevant governments and colleges.

Sex-related Differences in DNA Copy Number Alterations in Hepatitis B Virus-Associated Hepatocellular Carcinoma

Zhu, Zhong-Zheng,Wang, Dong,Cong, Wen-Ming,Jiang, Hongmei,Yu, Yue,Wen, Bing-Ji,Dong, Hui,Zhang, Xiao,Liu, Shu-Fang,Wang, Ai-Zhong,Zhu, Guanshan,Hou, Lifang Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.1

Background: Males have a higher prevalence of hepatocellular carcinoma (HCC) than females in general, but the reasons for the sex disparity are still obscure. DNA copy number alteration (CNA) is a major feature of solid tumors including HCC, but whether CNA plays a role in sex-related differences in HCC development has never been evaluated. Methods: High-resolution array comparative genomic hybridization (CGH) was used to examine 17 female and 46 male HCC patients with chronic hepatitis B virus (HBV) infection in Shanghai, China. Two-tailed Fisher's exact or ${\chi}^2$ tests was used to compare CNAs between females and males. Results: The overall frequencies and patterns of CNAs in female and male cases were similar. However, female HCC tumors presented more copy number gains compared to those in males on 1q21.3-q22 (76.5% vs. 37.0%, P = 0.009), 11q11 (35.3% vs. 0.0%, P = 0.0002) and 19q13.31-q13.32 (23.5% vs. 0.0%, P = 0.004), and loss on 16p11.2 (35.3% vs. 6.5%, P = 0.009). Relative to females, male cases had greater copy number loss on 11q11 (63.0% vs. 17.6%, P = 0.002). Further analyses showed that 11q11 gain correlated with 19q13.31-q13.32 gain (P = 0.042), 11q11 loss (P = 0.011) and 16p11.2 loss (P = 0.033), while 1q21.3-q22 gain correlated with 19q13.31-q13.32 gain (P = 0.046). Conclusions: These findings suggest that CNAs may play a role in sex-related differences in HBVassociated HCC development.

Converting biochar to sulfonated solid acid catalysts for spiramycin hydrolyses: insights on the sulfonation processes

Yue Zhu,Xiaomin Dou,Zhen Chen,Yong Sik Ok 대한환경공학회 2019 대한환경공학회 학술발표논문집 Vol.2019 No.-

Property Modification of Caseinate Responsible to Transglutaminase-induced Glycosylation and Crosslinking in the Presence of a Degraded Chitosan

Chang-Yue Zhu,Xiao-Peng Wang,Xin-Huai Zhao 한국식품과학회 2015 Food Science and Biotechnology Vol.24 No.3

Transglutaminase at a concentration of 10 kU/kg of protein and degraded chitosan were used for glycosylation and crosslinking of caseinate at a fixed molar ratio of the acyl acceptor to the acyl donor of 3:1, a protein concentration of 50 g/L, a pH 7.5 at 37oC, and a reaction time of 4 h. Electrophoretic and chemical analyses showed glycosylation and crosslinking of caseinate. Glycosylated and crosslinked caseinate (GC-caseinate) contained glucosamine at 12.77 g/kg of protein, and the protein fraction had fewer reactable amino groups than original caseinate (0.58 vs. 0.64 mol/kg of protein). GC-caseinate exhibited an enhanced surface hydrophobicity, in vitro digestibility, water-binding capacity, and rheological properties, with poor protein dispensability and emulsification activity, but a similar oilbinding capacity and emulsion stability, compared with original caseinate. GC-caseinate also exhibited better properties than transglutaminase-crosslinked caseinate. Glycosylation and crosslinking was effective for better water-binding and rheological properties of caseinate.

Experimental study on the injection and spray characteristics of biodiesel and diesel fuel within a common rail system

( Hao Yue Zhu ),( Zhen Huang ),( Jin Xiao ),( Jun Xing Hou ) 한국액체미립화학회 2010 한국액체미립화학회 학술강연회 논문집 Vol.2010 No.-

In this paper, the injection characteristics and macroscopic spray behavior of biodiesel and diesel fuel within a common rail system are investigated. The injection rate is measured with Bosch method, spray visualization system is employed to study the macroscopic spray characteristics of both fuels. The results show that the injection delays of biodiesel and diesel are almost the same. Comparing to diesel, injection duration of biodiesel is a little longer and injection fuel quantity is a little larger. The macroscopic spray result shows, with increased injection pressure, the tip penetration of biodiesel becomes longer and the spray cone angle becomes larger. When ambient pressure increases, the injection tip penetration becomes shorter and the spray cone angle becomes larger. Comparing to diesel, injection tip penetration of biodiesel is longer and spray cone angle is smaller, because the kinematic viscosity and surface tension of biodiesel are larger than those of diesel. The difference of spray characteristics of both fuels is no longer obvious under higher injection pressure. With increased ambient pressure, the difference of spray tip penetration of both fuels becomes larger, and the difference of spray cone angle become smaller.

Production of 3-hydroxypropionic acid by recombinant Klebsiella pneumoniae based on aeration and ORP controlled strategy

Jian-Guo Zhu,Xiao-Jun Ji,Jun Du,Shuang Li,Yue-Yue Ding,He Huang 한국화학공학회 2009 Korean Journal of Chemical Engineering Vol.26 No.6

A biosynthetic pathway for the production of 3-hydroxypropionic acid (3-HP) from glycerol was established in recombinant Klebsiella pneumoniae by introducing the aldehyde dehydrogenase gene from Escherichia coli. The activity of aldehyde dehydrogenase, which oxidized 3-hydroxypropionaldehyde (3-HPA) to 3-HP, was detected and 3-HP was produced by the recombinant strains. Three different oxygen supply strategies, associated with measuring the oxidoreduction potential (ORP) during the fermentation under these conditions, were adopted for higher production of 3-HP by the recombinant cells. About 0.8 g/l 3-HP and more 1,3-propanediol production by the recombinant Klebsiella pneumoniae were obtained under completely aerobic conditions. Under micro-aerobic conditions, 3-HP production could be increased to 2.2 g/l and 1,3-propanediol production was almost the same as in the original strain. Under the anaerobic conditions, 1,3-propanediol was the main product and about 1.3 g/l 3-HP was produced. Finally, 3-HP production of the recombinant strain was increased to 2.8 g/l under micro-aerobic condition with a further two-stage ORP controlled strategy.

Overexpression of rice phosphate transporter gene OsPT2 enhances nitrogen fixation and ammonium assimilation in transgenic soybean under phosphorus deficiency

Wen-Li Zhu,Li-Fei Yang,Shouping Yang,Jun-Yi Gai,Yue-Lin Zhu 한국식물학회 2016 Journal of Plant Biology Vol.59 No.2

Phosphorus (P) deficiency is one of the major factors that limit legume nodulation and nitrogen (N) fixation, and thus legume productivity. In our previous study, we showed that three T2 transgenic soybean lines overexpressing rice phosphate transporter gene OsPT2 showed enhanced tolerance to low P stress. This study aimed to determine whether OsPT2 overexpression would increase N2 fixation and ammonium assimilation in three T3 homozygous transgenic lines (HTLs) under P deficiency in pot culture. Under low inorganic phosphate (Pi) conditions, the P accumulation, total N and total ureide concentrations were significantly higher in the T3 HTLs than in the wild type (WT) plants. Further, the T3 HTLs showed significantly better plant growth performance and nodule development than the WT plants under low-Pi conditions. Quantitative real-time PCR (qRT-PCR) analysis showed that the expression levels of GmENOD40-1, GmENOD40-2 (two early nodulin genes), and GmLba (one leghemoglobin gene) were significantly increased in T3 HTLs under P deficiency at 24 and 32 d after inoculation (DAI). The increased transcript levels of GmGS1β1 and GmGS1β2 (two cytosolic glutamine synthetase genes) in the T3 HTLs were consistent with the increase in glutamine synthetase (GS, EC 6.3.1.2) activity at 32 DAI. Our results indicated that the overexpression of OsPT2 in T3 HTLs enhances N2 fixation and ammonium assimilation activity under low P stress.

The State of the Art of Finite Element Analysis in Mechanical Clinching

Yue Zhang,Honghe Xu,Ruitao Peng,Yan Lu,Linwei Zhu 한국정밀공학회 2022 International Journal of Precision Engineering and Vol.9 No.4

Clinching technology is a mechanical connection technology that is applied to connect metal or non-metal sheet materials. It is widely used in different applications, such as automobile, aircraft, household appliances and other industries. In order to reduce weight, save energy, reduce fuel consumption, reduce pollution and curb global warming, lightweight structures with clinched joint are increasingly used in transportation. The finite element technology is popularized in engineering, so that it can get similar results with the test after investing less time, manpower, energy and material resources, which is conducive to the prediction and smooth progress of the test. A review of the finite element analysis of clinching technology is provided in the present paper. The article’s work also discusses the strength of the clinched joint, the factors influencing the clinched joint’s strength, the failure mechanism of the clinched joint, etc. Furthermore, the novel technologies of clinching as well as the finite element models and methods used in clinching, are introduced. The present paper’s main objective was to review the recent developments in the finite element analysis of clinching and provide a basis for further investigation in this area of research.

Influence of Alkalization Treatment on the Color Quality and the Total Phenolic and Anthocyanin Contents in Cocoa Powder

Yue Li,Song Zhu,Yun Feng,Feifei Xu,Jianguo Ma,Fang Zhong 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.1

The effects of alkalization treatments on color,colorimetric fractions, total polyphenol content, andanthocyanin content of cocoa powder were investigated. Adarker color and a lower total polyphenol content wereobtained for cocoa powder alkalized using a K2CO3solution than with an NaOH solution. A high temperatureand basic pH conditions favored formation of darkcomponents during alkalization due to sugar degradation,Maillard reactions, and anthocyanin polymerizing. Theanthocyanin content decreased with an increasing alkaliconcentration, suggesting that more anthocyanins weretransformed into brown polymers in darker cocoa powder. Cocoa powder with a heavy degree of alkalization had thelowest ratio of monomer anthocyanins to yellow/brownpolymer content. OD460/OD525 values for alkalized sampleswere higher than for non-alkalized samples. Cocoa powderpresented a better color quality after alkalization treatment.

Strain energy-based fatigue life prediction under variable amplitude loadings

Zhu, Shun-Peng,Yue, Peng,Correia, Jose,Blason, Sergio,De Jesus, Abilio,Wang, Qingyuan Techno-Press 2018 Structural Engineering and Mechanics, An Int'l Jou Vol.66 No.2

With the aim to evaluate the fatigue damage accumulation and predict the residual life of engineering components under variable amplitude loadings, this paper proposed a new strain energy-based damage accumulation model by considering both effects of mean stress and load interaction on fatigue life in a low cycle fatigue (LCF) regime. Moreover, an integrated procedure is elaborated for facilitating its application based on S-N curve and loading conditions. Eight experimental datasets of aluminum alloys and steels are utilized for model validation and comparison. Through comparing experimental results with model predictions by the proposed, Miner's rule, damaged stress model (DSM) and damaged energy model (DEM), results show that the proposed one provides more accurate predictions than others, which can be extended for further application under multi-level stress loadings.