Secondary pores are formed during hydrothermal treatment of NH<sub>4</sub>NaY accompanyingdealumination and production of extraframework aluminum. There exist different views onthe formation of secondary p...Secondary pores are formed during hydrothermal treatment of NH<sub>4</sub>NaY accompanyingdealumination and production of extraframework aluminum. There exist different views onthe formation of secondary pores. Lohse suggested that the formation of secondarypores was due to partial structural breakdown resulting from dealumination of sodalite. ButYoshida reported that secondary pores would be formed after the Si（3Al） was展开更多
在以往的许多研究中，运用效用分析方法评价和预测人力资源活动的效能一直受到人们的关注。该文对效用分析的研究和应用做了简要回顾，主要结论有：（1）效用分析作为多特征效用理论在人力资源管理领域中的应用，对人力资源活动评价具...在以往的许多研究中，运用效用分析方法评价和预测人力资源活动的效能一直受到人们的关注。该文对效用分析的研究和应用做了简要回顾，主要结论有：（1）效用分析作为多特征效用理论在人力资源管理领域中的应用，对人力资源活动评价具有重要意义；（2）效用模型参数SD y 的估计方法研究仍然是现在研究的焦点，三种常用参数估计方法特别受到研究的关注；（3）人力资源决策情景的效用研究已经引起人们的广泛重视，效用概念、效用信息表示方法、决策情景因素和效用评价方法等都对人们的决策行为产生影响；（4）在传统效用模型基础上，对一般的人力资源活动进行效用分析是应用研究的发展趋势。该文最后对效用分析研究做了总结和展望。.展开更多
The process of sex determination(SD)and sex differentiation(Sd)with associated sex-specific behaviour in teleosts is brought about by genetic factors and environmental factors under the influence of chemical messenger...The process of sex determination(SD)and sex differentiation(Sd)with associated sex-specific behaviour in teleosts is brought about by genetic factors and environmental factors under the influence of chemical messengers.SD is initiated by inherited genes,which in turn influence Sd by the production of hormones.To understand the plasticity of SD in fishes,the functional role of genes must be clearly elucidated.During early development,the dimorphic expression of male and female are mediated by the differentially sexualized brain.In mammals,SD region(SDR)on the Y chromosome(SRY)can be considered as male-specific copy of SOX3 and in the absence of SRY in teleosts suggests SD might be regulated by alternate genes.DM(doublesex/mab)-related genes,AMH(anti-mullerian hormone),TGF-b(transforming growth factor beta),GSDF(gonadal soma derived growth factor)and other genes(around 18)located in chromosomes of teleosts are found to be responsible for SD.The SD gene,sdY(sexually dimorphic on the Y chromosome)has been detected in more than 15 salmonid species,and in medaka and tilapia SD system is governed by heterogametic mechanism.In mullet,Mugil cephalus Dor et al.identified 27 SDR genes and suggested to be potential candidate genes for SD.Recently whole-genome sequencing data were produced from mullet and assembled into a draft genome sequence in which>30 loci are potentially associated with SD.Further analysis is required to know the involvement of each sex-biased gene for its functional influence on sex.Investigators attempted to know the sex-linkage group in tilapia and found that 2 linkage group i.e.LG1 and LG22 show SD loci,whereas in mullet it was documented that LG8 is the SD loci.Rigorous study with all male population(YY)or knockout of male marker gene,might give conclusive understanding on SD in future.The review highlights the absence of genomic understanding of SD and SDR genes for futuristic direction of research.展开更多
基金Project supported by the National Natural Science Foundation of China.
文摘Secondary pores are formed during hydrothermal treatment of NH<sub>4</sub>NaY accompanyingdealumination and production of extraframework aluminum. There exist different views onthe formation of secondary pores. Lohse suggested that the formation of secondarypores was due to partial structural breakdown resulting from dealumination of sodalite. ButYoshida reported that secondary pores would be formed after the Si（3Al） was
文摘在以往的许多研究中，运用效用分析方法评价和预测人力资源活动的效能一直受到人们的关注。该文对效用分析的研究和应用做了简要回顾，主要结论有：（1）效用分析作为多特征效用理论在人力资源管理领域中的应用，对人力资源活动评价具有重要意义；（2）效用模型参数SD y 的估计方法研究仍然是现在研究的焦点，三种常用参数估计方法特别受到研究的关注；（3）人力资源决策情景的效用研究已经引起人们的广泛重视，效用概念、效用信息表示方法、决策情景因素和效用评价方法等都对人们的决策行为产生影响；（4）在传统效用模型基础上，对一般的人力资源活动进行效用分析是应用研究的发展趋势。该文最后对效用分析研究做了总结和展望。.
基金Department of Science and Technology-SERB No:CRG/2020/0004363,Govt.of India。
文摘The process of sex determination(SD)and sex differentiation(Sd)with associated sex-specific behaviour in teleosts is brought about by genetic factors and environmental factors under the influence of chemical messengers.SD is initiated by inherited genes,which in turn influence Sd by the production of hormones.To understand the plasticity of SD in fishes,the functional role of genes must be clearly elucidated.During early development,the dimorphic expression of male and female are mediated by the differentially sexualized brain.In mammals,SD region(SDR)on the Y chromosome(SRY)can be considered as male-specific copy of SOX3 and in the absence of SRY in teleosts suggests SD might be regulated by alternate genes.DM(doublesex/mab)-related genes,AMH(anti-mullerian hormone),TGF-b(transforming growth factor beta),GSDF(gonadal soma derived growth factor)and other genes(around 18)located in chromosomes of teleosts are found to be responsible for SD.The SD gene,sdY(sexually dimorphic on the Y chromosome)has been detected in more than 15 salmonid species,and in medaka and tilapia SD system is governed by heterogametic mechanism.In mullet,Mugil cephalus Dor et al.identified 27 SDR genes and suggested to be potential candidate genes for SD.Recently whole-genome sequencing data were produced from mullet and assembled into a draft genome sequence in which>30 loci are potentially associated with SD.Further analysis is required to know the involvement of each sex-biased gene for its functional influence on sex.Investigators attempted to know the sex-linkage group in tilapia and found that 2 linkage group i.e.LG1 and LG22 show SD loci,whereas in mullet it was documented that LG8 is the SD loci.Rigorous study with all male population(YY)or knockout of male marker gene,might give conclusive understanding on SD in future.The review highlights the absence of genomic understanding of SD and SDR genes for futuristic direction of research.
