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Effect of nitrite on hydrolysis-acidification, biogas production and microbial community in semi-continuous two-phase anaerobic digestion of sewage sludge

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Journal of Environmental Sciences 2023年第4期126卷 434-444页

作者： Qian sheng Yiqing Lu Shijie Yuan Xiaowei Li Xiaohu Dai Yali guo Bin Dong State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China School of Environmental and Chemical Engineering Organic Compound Pollution Control EngineeringMinistry of EducationShanghai UniversityShanghai 200444China shanghai Investigation Design&Research institute Co.Ltd. Shanghai 200335China YANGTZE Eco-Environment Engineering Research Center China Three Gorges CorporationBeijing 100038China

Previous study found that the pre-treatment of sewage sludge with nitrite improves the biogas production during the mono/two-phase anaerobic digestion (AD) using batch biochemical methane potential *** this study,the effects of nitrite on hydrolysisacidification,biogas production,volatile solids destruction and microbial composition in semi-continuous two-phase AD of sewage sludge were *** addition of nitrite promotes sludge organic matter solubilization (+484%) and VFAs production (+98.9%),and causes an increase in the VS degradation rate during the AD process (+8.7%).The comparison of biogas production from the acidogenic and methanogenic reactors with or without the addition of nitrite implies that the nitrite has no significant effect on the overall biogas production of two-phase sludge AD ***-throughput sequencing analysis shows that the microbial communities of bacteria and archaea in two-phase AD reactors significantly changes after the addition of *** (bacteria) and Candidatus Methanofastidiosum (archaea) become the dominant genera in the acidogenic and methanogenic reactors with the nitrite *** findings provide new insights about using nitrite to promote the organic matter degradation of sewage sludge in a semicontinuous two-phase AD system.

关键词： Sewage sludge Bioenergy Methane production Nitrite Semi-continuous two-phase anaerobic digestion

甾体植物生长激素合成的研究 Ⅳ.一些中间体的合成

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化学学报 1987年第7期45卷 715-719页

作者：田伟生周维善中国科学院上海有机化学研究所中国科学院上海有机化学研究所上海

我国资源丰富的猪去氧胆酸（1）可以用作合成油菜甾醇内酯（2）、α-蜕皮甾酮（3）和维生素D代谢物4的原料.合成的关键是猪去氧胆酸侧链的改造.本文报道从猪去氧胆酸氧化脱羧所得到的△22-甾烯（5）分别转变成合成上述化合物的中间体6,7... 详细信息

我国资源丰富的猪去氧胆酸（1）可以用作合成油菜甾醇内酯（2）、α-蜕皮甾酮（3）和维生素D代谢物4的原料.合成的关键是猪去氧胆酸侧链的改造.本文报道从猪去氧胆酸氧化脱羧所得到的△22-甾烯（5）分别转变成合成上述化合物的中间体6,7和8,并利用从5经臭氧化制得的9合成了一个油菜甾醇内酯和α-蜕皮甾酮的共同中间体10.

关键词：中间体提取液饱和食盐水二氯甲烷氯代烃间氯过氧苯甲酸 ppm 猪去氧胆酸

有机磷化合物的研究ⅩⅩⅣ.辛基膦酸单丁酯的合成

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化学学报 1988年第3期46卷 290-293页

作者：袁承业胡水生中国科学院上海有机化学研究所

烷基膦酸单烷基酯是一类研究得较广泛的化合物,为探讨它们的化学结构对反应性能的影响,研究其合成方法是必要的.在众多的烷基膦酸单烷基酯的合成方法中,就产物纯度和操作简捷而言,以相应二烷基酯的碱性水解较可取.本文研究由辛基膦酸二... 详细信息

烷基膦酸单烷基酯是一类研究得较广泛的化合物,为探讨它们的化学结构对反应性能的影响,研究其合成方法是必要的.在众多的烷基膦酸单烷基酯的合成方法中,就产物纯度和操作简捷而言,以相应二烷基酯的碱性水解较可取.本文研究由辛基膦酸二丁酯的皂化法,包括氢氧化钠水解、季铵盐相转移催化及乙醇胺皂化,合成了辛基膦酸单丁酯,着重考察不同结构的辛基及酯丁基对皂化方法的适应性.所报道的辛基膦酸单丁酯诸异构体系尚未见记载的化合物,并在测定其物化常数的基础上,对它们的光谱作了研究。

关键词：辛基皂化法乙醇胺红外光谱氢氧化钠 IR 光谱氢氧化物钠盐特征频率

甾体植物生长激素的研究 Ⅵ.从猪去氧胆酸简法合成油菜甾醇内酯和昆虫蜕皮甾酮关键中间体——Δ^(2)-6-酮胆烯酸甲酯

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化学学报 1988年第8期46卷 824-826页

作者：田伟生周维善中国科学院上海有机化学研究所上海

我们已报道从猪去氧胆酸合成具有油菜甾醇内酯1和β-蜕皮甾酮2的A、B环结构单元的甾体化合物[1],在此合成中,我们以猪去氧胆酸3为原料.

关键词：猪去氧胆酸胆烷乙醚中间体简法昆虫

The development of laser-produced plasma EUV light source

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Chip 2022年第3期1卷 50-60页

作者： De-Kun Yang Du Wang Qiu-Shi Huang Yi Song Jian wu Wen-Xue Li Zhan-Shan Wang Xia-Hui Tang Hong-Xing Xu sheng Liu Cheng-qun Gui The institute of Technological Sciences Wuhan UniversityWuhan 430072China Key Laboratory of Advanced Micro-Structured Materials MOE Institute of Precision Optical EngineeringSchool of Physics Science and EngineeringTongji UniversityShanghai 200092China State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200241China School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China School of Physics and Technology Wuhan UniversityWuhan 430072China

Extreme ultraviolet lithography(EUVL)has been demonstrated to meet the industrial requirements of new-generation semiconductor *** development of high-power EUV sources is a long-term critical challenge to the implementation of EUVL in high-volume manufacturing(HVM),together with other technologies such as photoresist and ***,both theoretical studies and experiments have clearly indicated that the CO 2 laser-produced plasma(LPP)system is a promising solution for EUVL source,able to realize high conversion efficiency(CE)and output ***,ASML’s NXE:3400B EUV scanner configuring CO_(2) LPP source sys-tem has been installed and operated at chipmaker ***-while,other research teams have made different progresses in the development of LPP EUV ***,in their technologies,some critical areas need to be further improved to meet the requirements of 5 nm node and *** needed improvements include higher laser power,stable droplet generation system and longer collector *** this paper,we describe the performance characteristics of the laser system,droplet generator and mirror collector for different EUV sources,and also the new development results.

关键词： Extreme ultraviolet source Laser-produced plasma Sn target Long lifetime collector

chemistry of trichosanthin *** main amino acid sequence of proposed principle primary structure of trichosanthin

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Chinese Journal of chemistry 1984年第1期2卷 86-88页

作者： GU Zi-Wei QIAN Rui-Qing JIN Shan-Wei QIAN Wei-Wei XU Shan-Zhen ZHANG Li-Qing ZHANG Xiu-Lan YAO Yue-Zhen LIU Yong-Fu ZHU Shi-Qin CAO Bo-sheng WANG Shao-Fu WANG Qiang-Hua ZHANG Wei-Jun LIU yin-Zeng FU Yao-Hong WANG Yu shanghai institute of organic chemistry,academia sinica,shanghai shanghai institute of organic chemistry Academia Sinica Shanghai

In previous paper1-3were reported the physical and chemical properties,the deter-mination of the N-terminal amino acid sequence and the CNBr degradation fragment CBaof trichosanthin（TR）which is the active principle isolated from Chinese folk-medicine,TianHua Fen,traditionally used as abortificient and also for other OBS and GYN *** is a simple protein consisting of a single polypeptide chain of 224 amino acid（a.a.）

关键词： Li In acid IV

Recent advances in the applications of[1.1.1]propellane in organic synthesis

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Chinese Chemical Letters 2020年第12期31卷 3065-3072页

作者： Fu-sheng he Shimin Xie Yanfang Yao Jie wu School of Pharmaceutical and Materials Engineering&institute for Advanced Studies Taizhou UniversityTaizhou 318000China College of chemistry Xiangtan UniversityXiangtan 411105China State Key Laboratory of Organometallic chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

As a highly strained small molecule,[1.1.1]propellane has been widely used in various synthetic transformations owing to the exceptional reactivity of the central bond between the two bridgehead *** strain-release approaches,the rapid development of strategies for the construction of bicyclo[1.1.1]pentane(BCP)and cyclobutane derivatives using[1.1.1]propellane as the starting material has been witnessed in the past few *** this review,we highlight the most recent advances in this ***,the reactivity of[1.1.1]p ropellane can be divided into three pathways,including radical,anionic and transition metal-catalyzed pathways under appropriate conditions.

关键词： [1.1.1]Propellane Bicyclo[1.1.1]pentane Cyclobutane Radical Transition metal catalysis Photocatalyst

凡纳对虾高低繁殖力群体卵巢组织学观察及相关候选基因的表达分析

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渔业科学进展 2024年第5期45卷 183-194页

作者：张建春孔杰曹家旺谭建代平孟宪红罗坤傅强陈宝龙刘东亚邢群隋娟栾生中国水产科学研究院黄海水产研究所、农业农村部海洋渔业与可持续发展重点实验室、青岛海洋科技中心海洋渔业科学与食物产出过程功能实验室山东青岛266071 上海海洋大学水产与生命学院上海201306 邦普种业科技有限公司山东潍坊261312

在生产中,凡纳对虾(Penaeus vannamei)雌虾的繁殖性能表现出巨大差异。本研究以一个生产周期中雌虾产卵频次为繁殖力指标性状,以高繁殖力和低繁殖力雌虾为研究对象,对雌虾不同卵巢发育阶段(增殖期、小生长期、大生长期和成熟期)进行组... 详细信息

在生产中,凡纳对虾(Penaeus vannamei)雌虾的繁殖性能表现出巨大差异。本研究以一个生产周期中雌虾产卵频次为繁殖力指标性状,以高繁殖力和低繁殖力雌虾为研究对象,对雌虾不同卵巢发育阶段(增殖期、小生长期、大生长期和成熟期)进行组织学观察。针对在前期选择清除分析中筛选到的繁殖候选基因TRX2、PARD3、PLCβ4和RERE,在高、低繁殖力雌虾不同卵巢发育阶段,采用实时荧光定量PCR方法,首次分析比较这些基因在卵巢、眼柄组织中的表达规律。组织观察结果显示,低繁殖力雌虾卵巢在整个生产周期中无法发育至成熟期,高繁殖力雌虾卵巢在卵黄颗粒的形成和积累、皮质棒形成等关键过程的速度要快于低繁殖力雌虾。基因表达检测结果显示,在卵巢小生长期和大生长期,TRX2、PLCβ4和RERE基因在高繁殖力组卵巢的表达量均显著高于低繁殖力组卵巢(P<0.05),4个基因在高繁殖力组成熟期卵巢中均维持较高的表达水平;在不同时期的眼柄组织中,低繁殖力组中TRX2、PARD3、PLCβ4和RERE基因的表达量均高于高繁殖力组。研究表明,上述4种基因可能在凡纳对虾卵巢发育过程中发挥重要作用。以上结果为深入研究凡纳对虾雌虾繁殖力产生差异的分子机制以及分子辅助育种提供了重要参考。

关键词：凡纳对虾繁殖卵巢组织学基因表达模式

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芳香族羟肟及其过渡金属配合物的质谱研究

化学学报 1987年第11期45卷 1085-1090页

作者：傅桂香陈耀焕周澄明吴元伟徐笑云曾明英盛怀禹中国科学院上海有机化学研究所中国科学院上海有机化学研究所上海

本文报道某些芳香族羟肟及其过渡金属铜、镍、钴和铁配合物的EI质谱,借助亚稳跃迁、高分辨质谱和稳定同位素15N、63Cu、和65Cu标记物,讨论其断裂途径,总结断裂规律.

关键词：过渡金属配合物质谱配位体金属原子粒子谱分子离子峰芳香族