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沈阳化工学院学报 2009年第3期23卷 226-229页

作者：于晓彩刘培于洋大连水产学院海洋环境工程学院辽宁大连116023 辽宁省高校近岸海洋环境科学与技术重点实验室辽宁大连116023 沈阳化工学院应用化学学院辽宁沈阳110142

研究利用壳聚糖为絮凝剂在电解质Na2SO4的作用下絮凝处理含锌废水的方法.考察pH值、废水负荷、絮凝剂浓度以及絮凝时间对含锌废水去除率的影响.实验结果表明:当废水锌质量浓度为100 mg/l、壳聚糖絮凝含锌废水pH值为11,絮凝时间为10 min... 详细信息

研究利用壳聚糖为絮凝剂在电解质Na2SO4的作用下絮凝处理含锌废水的方法.考察pH值、废水负荷、絮凝剂浓度以及絮凝时间对含锌废水去除率的影响.实验结果表明:当废水锌质量浓度为100 mg/l、壳聚糖絮凝含锌废水pH值为11,絮凝时间为10 min时废水中锌的去除率可达98.4%.壳聚糖的加入量过多过少都会影响除锌效果.

关键词：壳聚糖絮凝作用含锌废水

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用DCP化学交联聚丙烯的研究

山西化工 2001年第4期21卷 11-12,17页

作者：梁玉蓉华北工学院化学工程系太原030051

用过氧化二异丙苯（DCP）作为交联剂,以松节油和苯乙烯为助交联剂对聚丙烯（PP）进行化学交联,考察了DCP的用量对交联PP的力学性能、耐热性和凝胶量的影响。

关键词：聚丙烯化学交联过氧化二异丙苯 DCP 松节油苯乙烯

Physiological and molecular responses to cold stress in rapeseed(Brassica napus l.)

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Journal of Integrative Agriculture 2019年第12期18卷 2742-2752页

作者： YAN lei Tariq Shah CHENG Yong lü Yan ZHANG Xue-kun ZOU Xi-ling Oil Crops Research institute Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of Agriculture and Rural AffairsWuhan 430062P.R.China college of Plant Science and technology Huazhong Agricultural UniversityWuhan 430070P.R.China

low temperature is one of the most important abiotic factors inhibiting growth, productivity, and distribution of rapeseed(Brassica napus l.). Therefore, it is important to identify and cultivate cold-tolerant germplasm. The objective of this study was to figure out the mechanism of chilling(4 and 2°C) and freezing(–2 and –4°C) stresses along with a control(22°C) in B. napus cultivars(1801 and C20) under controlled environment(growth chamber). The experiment was arranged in a complete randomized design with three replications. Our results exhibited that under chilling and freezing stresses, the increment of proline accumulation, soluble sugar and protein contents, and antioxidant enzyme activity were enhanced more in 1801 cultivar compared with C20 cultivar. At –2 and –4°C, the seedlings of C20 cultivar died completely compared with 1801 cultivar. Hydrogen peroxide(H2 O2) and malondialdehyde contents(MDA) increased in both cultivars, but when the temperature was decreased up to –2 and –4°C, the MDA and H2 O2 contents continuously dropped in 1801 cultivar. Moreover, we found that leaf abscisic acid(ABA) was enhanced in 1801 cultivar under chilling and freezing stresses. Additionally, the transcriptional regulations of cold-tolerant genes(COlD1, CBF4, COR6.6, COR15, and COR25) were also determined using real-time quantitative PCR(RT-q PCR). RT-q PCR showed that higher expression of these genes were found in 1801 as compared to C20 under cold stress(chilling and freezing stresses). Therefore, it is concluded from this experiment that 1801 cultivar has a higher ability to respond to cold stress(chilling and freezing stresses) by maintaining hormonal, antioxidative, and osmotic activity along with gene transcription process than C20. The result of this study will provide a solid foundation for understanding physiological and molecular mechanisms of cold stress signaling in rapeseed(B. napus).

关键词： Brassica napus l. cold stress morphological features molecular regulation physiological indicators

Molecular cloning,characterization and expression analysis of Sox9a and Foxl2 genes in half-smooth tongue sole(Cynoglossussemilaevis)

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Acta Oceanologica Sinica 2011年第1期30卷 68-77页

作者： DONG Xiaoli CHEN Songlin JI Xiangshan SHAO Changwei college of Fisheries Ocean University of China Qingdao 266003 China Key laboratory for Sustainable Utilization of Marine Fisheries Resources of Ministry ofAgriculture Yellow Sea Fisheries Research Institute Chinese Academy of Fishery SciencesQingdao 266071 China college of Animal Science and technology Shandong Agricultural University Taian 271018 China

Two transcription factors, Sox9a and Foxl2 were cloned from half-smooth tongue sole （Cynoglossus semilaevis）. Sox9a is a new duplication of *** Sox9 gene. The complete cDNA of Sox9a gene was 1 842 bp long coding for 487 amino acids and Foxl2 gene was 1 817 bp coding for 308 amino acids. Sox9a was expressed higher in male brain, pituitary and gonad and Foxl2 were higher in female brain, pituitary and gonad. The expression of Sox9a gene in gonads of neo-males was higher than that of normal females. Sox9a and Foxl2 were expressed higher in gastrula stage than in other stages. In the period of sex differentiation, the expression of Sox9a was first going up and then going down and Foxl2 was higher expressed at 37 dph. The highest expressions of Sox9a and Foxl2 genes occurred in nine-month and 12-month old gonad tissues, respectively. Sox9a gene was considered to have inevitable links with sex reversal, sex differentiation and cell differentiation of embryos and formation of spermatogenic ceils. Foxl2 was considered to play a role in sex differentiation, cell differentiation of embryos but not to be necessary for sex determination and sex reversal.

关键词： half-smooth tongue sole Cynoglossus semilaevis Sox9 Foxl2 real-time PCR sexreversal neo-male

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镍体系引发丁二烯聚合机理的研究

合成橡胶工业 1989年第5期12卷 337-343页

作者：陈滇宝王春仲崇祺唐学明青岛化工学院高分子材料工程系

阐述了Bd聚合用的各种镍系催化剂内部各组分的相互作用机理,分析和总结了一些动力学研究结果。重点讨论了三种活性中心模型:一种认为Ni(0)有催化活性,Ni(Ⅰ)无活性;另一种认为活性中心是附着在Ni(0)载体上的Ni(Ⅰ),而唐学明则认为Ni(0)... 详细信息

阐述了Bd聚合用的各种镍系催化剂内部各组分的相互作用机理,分析和总结了一些动力学研究结果。重点讨论了三种活性中心模型:一种认为Ni(0)有催化活性,Ni(Ⅰ)无活性;另一种认为活性中心是附着在Ni(0)载体上的Ni(Ⅰ),而唐学明则认为Ni(0)和Ni(Ⅰ)都具有催化活性。笔者还指出了进一步提高镍系催化剂的聚合活性及利用率等问题的研究方向。

关键词：镍系催化剂丁二烯聚合机理定向聚合综述

EXPONENTIAl ESTIMATE OF SOlUTION TO STOCHASTIC FUNCTIONAl DIFFERENTIAl EQUATIONS WITH INFINITE DElAY

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Annals of Differential Equations 2010年第3期26卷 332-340页

作者： Fengying Wei (college of Math. and Computer Sci., Fuzhou University, Fuzhou 350108) Ke Wang (Dept. of Math., Harbin institute of technology, Weihai 264209, Shandong)

In this paper, by the Burkholder-Davis-Gundy inequality and It? formula, the exponential estimate of the solution to stochastic functional differential equations with infinite delay is established in the phase space BC((-∞,0];Rd). Furthermore, the sample lyapunov exponent of the solution is obtained, which is less than a positive constant 2√K + 65K. Moreover, a pth moment of the solution is studied.

关键词： stochastic functional differential equations infinite delay exponential estimate It’s formula

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雷诺实验最优实验条件探究及装置改造

云南化工 2024年第9期51卷 113-115页

作者：林玲冯鹏举暨南大学化学与材料学院广东广州510630

雷诺演示实验对应“化学工程基础实验”流体流动与输送部分的学习内容,此实验能够使学生直观观察和了解水的三种流动型态,通过控制水箱内水的流量,记录不同实验条件下的水温、水流量、示踪剂型态,计算出对应的雷诺数。比较各组实验达到... 详细信息

雷诺演示实验对应“化学工程基础实验”流体流动与输送部分的学习内容,此实验能够使学生直观观察和了解水的三种流动型态,通过控制水箱内水的流量,记录不同实验条件下的水温、水流量、示踪剂型态,计算出对应的雷诺数。比较各组实验达到层流、湍流对应的雷诺数,探究最优实验条件。对实验装置水箱进行改进,通过增加浮球阀的方式控制进水,减少了等待水面稳定的时间,节约水资源,在实验台套数不足的情况下,提高了实验效率。

关键词：雷诺实验水流量浮球阀装置改造

基于装备作战效能的复杂电磁环境下训练效果评估

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系统仿真学报 2009年第17期21卷 5375-5378页

作者：刘义王国玉冯德军张宏远国防科技大学电子科学与工程学院长沙410073 防化指挥工程学院北京102205

训练效果的准确评估是改进训练方法提高训练效果的基础。复杂电磁环境下的训练对象是装备操作人员与指挥人员,目的是通过训练提高操作人员与指挥人员应对复杂电磁环境的能力。由于复杂电磁环境下训练的复杂性和不确定性,对指挥人员、操... 详细信息

训练效果的准确评估是改进训练方法提高训练效果的基础。复杂电磁环境下的训练对象是装备操作人员与指挥人员,目的是通过训练提高操作人员与指挥人员应对复杂电磁环境的能力。由于复杂电磁环境下训练的复杂性和不确定性,对指挥人员、操作人员的能力及其战术水平进行量化入模十分困难,直接建立指标体系对训练效果进行评估很难实现。提出了一种基于武器装备作战效能的训练效果评估方法,通过武器装备的作战效能反映操作人员和指挥人员的能力;通过训练前后武器作战效能的提高量化值对训练的效果进行评估。实例表明,该方法可以很好的解决复杂电磁环境下训练效果评估问题。

关键词：复杂电磁环境武器作战效能训练效果评估指标聚合建模评估

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结构钢断口遗传的消除

理化检验.物理分册 1987年第6期 2-7页

作者：任瑞铭戚正风大连铁道学院

用37CrNi3钢研究了过热淬火组织在再次中速加热时所出现的断口遗传,试验表明,此时所出现的断口遗传与再次加热时所保留的原奥氏体晶粒边界有关,随再次加热时保温时间的延长及加热温度的提高,所形成的细小的奥氏体晶粒将通过聚集再结晶... 详细信息

用37CrNi3钢研究了过热淬火组织在再次中速加热时所出现的断口遗传,试验表明,此时所出现的断口遗传与再次加热时所保留的原奥氏体晶粒边界有关,随再次加热时保温时间的延长及加热温度的提高,所形成的细小的奥氏体晶粒将通过聚集再结晶而长大,随新奥氏体晶粒的长大,原奥氏体晶界的消失,断口遗传也得到消除。

关键词：断口遗传组织遗传晶粒边界奥氏体晶界奥氏体 γ固溶体金相相组成油淬聚集再结晶保温时间粗晶粒