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分光光度法测定生物样品中的痕量铜

长春理工大学学报（自然科学版） 2006年第2期29卷 107-109页

作者：李景梅于辉李牧翟庆洲长春理工大学纳米技术中心长春130022

在Ph 5.3 Hac-NaAc缓冲介质中,铜（II）与三溴偶氮胂（TB-ASA）形成紫红色络合物,络合物最大吸收波长λmax = 614nm,该波长下表观摩尔吸光系数ε = 1.16×10^4 L·mol^-1·cm^-1,络合物组成比为Cu（II）：R = 1：2,铜量在0.40 ～ 3.60 ... 详细信息

在Ph 5.3 Hac-NaAc缓冲介质中,铜（II）与三溴偶氮胂（TB-ASA）形成紫红色络合物,络合物最大吸收波长λmax = 614nm,该波长下表观摩尔吸光系数ε = 1.16×10^4 L·mol^-1·cm^-1,络合物组成比为Cu（II）：R = 1：2,铜量在0.40 ～ 3.60 μg·mL^-1范围内遵守比耳定律.方法已用于生物样品鸡肝、土豆、蒜苔样品中痕量铜的测定.

关键词：铜分光光度法三溴偶氮胂生物样品

大规模海上风电场桩基础对海洋水动力环境影响研究

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绿色科技 2024年第16期26卷 257-260页

作者：张孝严张琴丁玲余科平顾雯上海勘测设计研究院有限公司上海200335 中国长江三峡集团有限公司长江生态环境工程研究中心湖北武汉430014 上海东海风力发电有限公司上海200433

基于广东阳江青洲成片海上风电场项目,采用MIKE21软件搭建二维潮流数学模型,并结合项目海域实测潮流、潮汐资料对模型进行率定、验证,分析大规模海上风电项目实施前后的潮流动力场变化情况。结果表明:风电场建设后,单个桩基基础迎背水... 详细信息

基于广东阳江青洲成片海上风电场项目,采用MIKE21软件搭建二维潮流数学模型,并结合项目海域实测潮流、潮汐资料对模型进行率定、验证,分析大规模海上风电项目实施前后的潮流动力场变化情况。结果表明:风电场建设后,单个桩基基础迎背水面为流速减小区,垂直于涨落潮流方向为流速增大区,综合考虑7个风电场的布置情况,风机基础基群迎背水方向为流速减小区,垂直于风电场涨落潮方向为流速增大区,潮流流速流向改变的范围主要局限在7个风电场连片范围的区域内,7个风电场叠加效应并不明显。

关键词：风电场桩基水动力

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PpMAPK6 regulates peach bud endodormancy release through interactions with PpDAM6

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Journal of Integrative Agriculture 2023年第1期22卷 139-148页

作者： ZHANG yu-zheng XU Chen LU Wen-li WANG Xiao-zhe WANG Ning MENG Xiang-guang FANG yu-hui TAN Qiu-ping CHEN Xiu-de FU Xi-ling LI Ling College of Horticultural Science and Engineering Shandong Agricultural UniversityTai’an 271018P.R.China State Key Laboratory of Crop Biology Shandong Agricultural UniversityTai’an 271018P.R.China Shandong Collaborative Innovation Center for Fruit&Vegetable Production with High Quality and Efficiency Tai’an 271018P.R.China

The MADS-box(DAM)gene PpDAM6,which is related to dormancy,plays a key role in bud endodormancy release,and the expression of PpDAM6 decreases during endodormancy ***,the interaction network that governs its regulation of the endodormancy release of flower buds in peach remains *** this study,we used yeast two-hybrid(Y2H)assays to identify a mitogen-activated protein kinase,PpMAPK6,that interacts with PpDAM6 in a peach dormancy-associated SSHcDNA ***6 is primarily located in the nucleus,and Y2H and bimolecular fluorescence complementation(BiFC)assays verified that PpMAPK6 interacts with PpDAM6 by binding to the MADS-box domain of *** real-time PCR(qRT-PCR)analysis showed that the expression of PpMAPK6 was opposite that of PpDAM6 in the endodormancy release of three cultivars with different chilling requirements(Prunus persica‘Chunjie’,Prunus persica ***‘Zhongyou 5’,Prunus persica‘qingzhou peach’).In addition,abscisic acid(ABA)inhibited the expression of PpMAPK6 and promoted the expression of PpDAM6 in flower *** results indicated that PpMAPK6 might phosphorylate PpDAM6 to accelerate its degradation by interacting with *** expression of PpMAPK6 increased with decreasing ABA content during endodormancy release in peach flower buds,which in turn decreased the expression of PpDAM6 and promoted endodormancy release.

关键词： peach endodormancy release PpDAM6 PpMAPK6 ABA

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分光光度法测定香烟及化学试剂中的铁

长春理工大学学报（自然科学版） 2005年第2期28卷 64-66页

作者：张晓霞苗润忠于辉翟庆洲长春理工大学纳米技术研究中心长春130022

研究了乳化剂OP存在下铁(Ⅲ)与土霉素显色反应光度性质,在pH4.0的HOAc-NaOAc缓冲溶液中,铁(Ⅲ)与土霉素形成1:3橙黄色配合物,最大吸收波长为396nm,铁(Ⅲ)含量在0-5μ***-1内服从比耳定律,表观摩尔吸光系数3ε96nm=1.12×***-1,方法用于... 详细信息

研究了乳化剂OP存在下铁(Ⅲ)与土霉素显色反应光度性质,在pH4.0的HOAc-NaOAc缓冲溶液中,铁(Ⅲ)与土霉素形成1:3橙黄色配合物,最大吸收波长为396nm,铁(Ⅲ)含量在0-5μ***-1内服从比耳定律,表观摩尔吸光系数3ε96nm=1.12×***-1,方法用于香烟、硝酸钠、醋酸钠及氯化铵化学试剂中铁的测定,结果满意。

关键词：铁(Ⅲ) 分光光度法土霉素乳化剂OP 香烟化学试剂

1-10KW级质子交换膜燃料电池冷却系统的建模

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微型电脑应用 2010年第3期26卷 16-17,20页

作者：阮庆洲余晴春胡鸣若上海交通大学电子信息与电气工程学院上海交通大学机械与动力学院

通过对质子交换膜燃料电池冷却系统的分析,利用模糊控制理论,对1～10kW级的质子交换膜燃料电池冷却系统进行建模,并计算出输出决策矩阵.通过对输入空间进行线性变换.将可能的输入值变换到-3到+3这样的一个标准区间,最后,通过对输入空间... 详细信息

通过对质子交换膜燃料电池冷却系统的分析,利用模糊控制理论,对1～10kW级的质子交换膜燃料电池冷却系统进行建模,并计算出输出决策矩阵.通过对输入空间进行线性变换.将可能的输入值变换到-3到+3这样的一个标准区间,最后,通过对输入空间内-3到3的整数取植进行了计算,得到了对应的输出。

关键词：模糊控制 PID控制关系矩阵输出决策矩阵

Impact of Soil Fumigation Practices on Soil Nematodes and Microbial Biomass

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Pedosphere 2004年第3期14卷 387-393页

作者： CAO Zhi—Ping yu Yong—Li CHEN Guo-Kang R.DAWSON Department of Ecology and Ecological Engineering College of Resources and Environmental ScienceChina Agricultural UniversityBeijing 100094(China).

This study was designed to understand the impact of methyl bromide (MB) (CH3Br) and its alternatives on both free-living and root-knot nematodes in the soil. A randomized complete block experiment with six treatments and 4 replicates (each replicate in a separate greenhouse) was established in qingzhou, Shandong Province, China. In addition to MB and untreated control (CK) treatments there were four alternative soil fumigation practices including MB+virtually impermeable films (VIF), metam sodium (MS), MS +VIF and soil solarization combined with selected biological control agents (SS+BCA). Two tomato (Lycopersicum esculentum Mill.) cultivars, cv. Maofen-802 from the Xian Institute of Vegetable Science, China, and cv. AF179 Brillante from the Israeli Hazera Quality Seeds, were selected as test crops. The results indicated that Rhabditidae was the most dominant population with percentage abundance as high as 85% of the total number of identified free-living nematodes, followed by that of Cephalobidae. Methyl bromide and its alternatives except for the non-chemical SS+BCA treatment controlled the target pest, root-knot nematodes. Also, the impact of the three chemical alternatives on free-living nematode number and functional group abundance was similar to the impact associated with a typical methyl bromide application. Chemical fumigation practices, especially that with MB, significantly reduced the number of nematodes in the soil and simultaneously significantly reduced the number of nematode genera thereby reducing nematode diversity. All the four soil chemical fumigation activities decreased soil microbial biomass and had an obvious initial impact on microorganism biomass. Furthermore, both plant-parasitic and fungivore nematodes were positively correlated with soil microbial biomass.

关键词： methyl bromide microbial biomass nematode soil fumigation

An Overlapping Structured P2P for REIK Overlay Network

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An Overlapping Structured P2P for REIK Overlay Network