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Controllable Synthesis of Carboxymethyl Cellulose and Its Application in Tobacco Sheets

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武汉大学学报:自然科学英文版 2023年第4期28卷 341-350页

作者： YAN Qunshan WEI Pei PENG Rui TIAN Shilin LI Dan TONG Yuxing NI Jiazhi LIU Liangcai XIONG Bin China Tobacco Hubei industry Co. Ltd.Wuhan 430040HubeiChina Hubei Xinye Reconstituted Tobacco Development Co. Ltd.Wuhan 430056HubeiChina Hubei Key Lab of Applied Research institute of Reconstituted Tobacco Wuhan 430040HubeiChina School of Chemistry Chemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070HubeiChina

Carboxymethyl cellulose(CMC)with different degree of substitution(DS)was prepared by controlling feed ratio and times of alkalization and *** with different molecular weight was prepared by degradation of hydrochloric acid *** experiments were designed to study the effects of addition amount,molecular weight and DS of CMC on the tensile strength of tobacco *** effects of CMC on the thermal properties and aerosol release of tobacco sheets were also *** results showed that the addition amount and the molecular weight of CMC had obvious effect on the tensile strength of tobacco *** DS of CMC had no significant effect on the tensile strength of tobacco *** addition of CMC improved the thermal stability of tobacco sheets to a certain extent,and had certain influence on the content of nicotine in aerosol.

关键词： tobacco sheets carboxymethyl cellulose tensile strength thermal performance

Capacity of Natural Fatty Alcohols Is Surplus

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China chemical Reporter 2008年第3期19卷 18-19页

作者： Ms Luo Yi,China Research institute of Daily chemical industry China Research institute of Daily chemical industry

China started the research on the pro-duction of natural fatty alcohols in the late *** capacity of natu-ral fatty alcohols reached 60 000 t/a in *** to the rapid

关键词： alcohols today morethan manufactured jilin facilit

Distribution performance of gas–liquid mixture in the shell side of spiral-wound heat exchangers

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Chinese Journal of chemical Engineering 2019年第10期27卷 2284-2292页

作者： Wenke Zheng Weihua Cai Yiqiang Jiang School of Architecture Harbin Institute of TechnologyHarbin 150090China Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology Ministry of Industry and Information TechnologyHarbin 150090China School of Energy Science and Engineering Harbin Institute of TechnologyHarbin 150001China School of Energy and Power Engineering Northeast Electric Power UniversityJilin 132012China

The non-uniformity of gas–liquid mixture is a critical issue which leads to the heat transfer deterioration of spiralwound heat exchangers(SWHEs).Two-phase mass flow rate and the content of gas are important parameters as well as structural parameters which have prominent influences on flow distribution uniformity of SWHE shell *** order to investigate the influences of these parameters,an experimental test system was built using water and air as mediums and a novel distributor named"tubes distributor"was *** effects of mass flow rate and the content of gas on two-phase distribution performance were analyzed,where the mass flow rate ranged from 28.4 to 171.9 kg·h-1 and the content of gas changed from 0.2 to 0.8,*** results showed that the mixture mass flow rate considerably influenced the liquid distribution than that of gas phase and the larger mass flow rate exhibited the better distribution uniformity of two-phase *** was also found that the tubes distributor had the better two-phase uniformity when the content of gas was around *** diameter played an important role in the distribution of gas phase and slit width was more significant for the uniformity of liquid phase.

关键词： Spiral-wound heat exchanger Gas–liquid mixture Multiphase flow Distribution uniformity

Analysis and design of resistance-wire heater in MOCVD reactor

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Journal of Central South University 2014年第9期21卷 3518-3524页

作者：曲毓萱王斌胡仕刚吴笑峰李志明唐志军李劲胡莹璐 Advanced Technology Generalization institute of CNGC The Center of Coordination and Support of State Administration of Science Technology and Industry for National Defence School of Information and Electrical Engineering Hunan University of Science and Technology School of Information Science and Engineering University of Jinan The 41st institute of China Electronics Technology Group corporation

Metal organic chemical vapor deposition(MOCVD) is a key equipment in the manufacturing of semiconductor optoelectronic devices and microwave devices in industry. Heating system is a vital part of MOCVD. Specific heating device and thermal control technology are needed for each new reactor design. By using resistance-wire heating MOCVD reaction chamber model, thermal analysis and structure optimization of the reactor were developed from the vertical position and the distance between coils of the resistance-wire heater. It is indicated that, within a certain range, the average temperature of the graphite susceptor varies linearly with the vertical distance of heater to susceptor, and with the changed distances between the coils; furthermore, single resistance-wire heater should be placed loosely in the internal and tightly in the external. The modulate accuracy of the temperature field approximately equals the change of the average temperature corresponding to the change of the coil position.

关键词： MOCVD 反应堆设计加热器电阻丝反应器金属有机化学气相沉积半导体光电器件垂直距离

Novel High-nitrogen Energetic Compound Based on Semicarbazide-substituted Tetrazine

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chemical Research in Chinese Universities 2012年第6期28卷 931-935页

作者： ZHANG Jlan-guo LIANG Yan-hui XIE Shao-hua FENG Jin-ling WANG Kun ZHANG Tong-lai State Key Laboratory of Explosion Science and Technology Beij'ing Institute of Technology Beo'ing 100081 P. R. China The 46th institute of the Sixth Academy of China Aerospace Science & industry corporation Hohhot 010010 P. R. China

A novel energetic compound 3-（3,5-dimethylpyrazol-1-yl）-6-semicarbazide-1,2,4,5-tetrazine（DSTZ） was prepared and characterized by elemental analysis and Fourier transform infrared（FTIR） *** crystal structure was determined by X-ray single crystal diffraction *** crystal belongs to the monoclinic system with a P2 1 /c space group,a=0.9942（7） nm,b=0.5067（3） nm,c=1.1830（8） nm,β=109.616°,Z=2 and D c =1.475 g/cm *** extensive hydrogen bonds,the molecules were linked together to form a three-dimensional herringbone-like *** analysis of the compound was carried out via differential scanning calorimetry（DSC） and thermogravimetric-derivative thermogravimetry（TG-DTG）.Under a nitrogen atmosphere at a heating rate of 10 K/min,DSTZ decomposed directly in a range of 493―513 *** one intense exothermic process was observed and the decomposition products were all gaseous *** sensitivity properties were determined,showing that the title complex was insensitive to friction,impact and flame.

关键词： 1 2 4 5-Tetrazine Semicarbazide Crystal structure Sensitivity property

Research and Application of In-seam Seismic Survey Technology for Disaster-causing Potential Geology Anomalous Body in Coal Seam

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Acta Geologica Sinica(English Edition) 2020年第1期94卷 10-26页

作者： TENG Jiwen LI Songying JIA Mingkui LIAN Jie LIU Honglei LIU Guodong WANG Wei Volker SCHAPE FENG Lei YAO Xiaoshuai WANG Kang YAN Yafen ZHANG Wanpeng institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China jilin University Changchun 130026China University of Chinese Academy of Sciences Beijing 100049China Research institute Henan Energy&Chemical Industry Group Co.Ltd.Zhengzhou 450046China Henan Energy&chemical industry Group Co. Ltd.Zhengzhou 450046China Yima Coal industry Group Co.Ltd. Yima 472300China College of Geosciences and Surveying Engineering China University of Mining and Technology-BeijingBeijing 100083China University of Illinois at Urbana-Champaign Champaign 61801USA Geological institute China Earthquake AdministrationBeijing 100029China institute of Geographic Science and Natural Resources Research Chinese Academy of ScienceBeijing 100101China DMT GmbH&Co.KG Essen 45307Germany School of Resource&Environment Henan Polytechnic UniversityJiaozuo 454003China Henan University of Science and Technology Luoyang 471000 China

In order to effectively detect potential geology anomalous bodies in coal bearing formation,such as coal seam thickness variation,small faults,goafs and collapse columns,and provide scientific guidance for safe and efficient mining,the SUMMIT-II EX explosion-proof seismic slot wave instrument,produced by German DMT Company,was used to detect the underground channel wave with the help of transmission method,reflection method and transflective *** area detection experiment in mining face had been carried out thanks to the advantage of channel wave,such as its great dispersion,abundant geology information,strong anti-interference ability and long-distance *** experimental results showed that:(1)Coal seam thickness variation in extremely unstable coal seam has been quantitatively interpreted with an accuracy of more than 80%generally;(2)The faults,goafs and collapse columns could be detected and predicted accurately;(3)Experimental detection of gas enrichment areas,stress concentration regions and water inrush risk zone has been collated;(4)A research system of disaster-causing geology anomalous body detection by in-seam seismic survey has been built,valuable and innovative achievements have been *** of innovation obtained for the first time in this study indicated that it was more effective to detect disaster-causing potential geology anomalies by in-seam seismic survey than by ground seismic *** had significant scientific value and application prospect under complex coal seam conditions.

关键词： in-seam seismic survey technology(ISS) disaster-causing potential geology anomalous body dispersion feature mine geophysical prospecting quantitative interpretation

Enzyme-directed pH-responsive exfoliation and dispersion of graphene and its decoration by gold nanoparticles for use as a hybrid catalyst

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Nano Research 2013年第9期6卷 693-702页

作者： Konggang Qu Li Wu Jinsong Ren Xiaogang Qu Laboratory of chemical Biology Division of Biological Inorganic Chemistry State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied Chemistry Graduate School of the Chinese Academy of Sciences Chinese Academy of Sciences ChangchunJilin 130022 China

在高产量生产高质量的 graphene 的非破坏性、安全、实际的策略着急地被要求，自从这以后将为 graphene 的大量应用铺平道路。这里我们在场为由使用溶解酵素的 graphene 的脱落和 functionalization 的一个 pH 应答的水可分散的方法。gr... 详细信息

在高产量生产高质量的 graphene 的非破坏性、安全、实际的策略着急地被要求，自从这以后将为 graphene 的大量应用铺平道路。这里我们在场为由使用溶解酵素的 graphene 的脱落和 functionalization 的一个 pH 应答的水可分散的方法。graphene 的 pH 应答的分散可能为 multicomponent/multifunctional nanohybrid 材料和 nanoscale 的可逆集会是有用的电子设备。更重要地， composites 能容易在溶解酵素和金 nanoparticles (AuNPs ) 通过在二硫化物组之间的相互作用被构造。产生 graphene-AuNPs composites 表演向由 NaBH4 的 o 硝基苯胺的减小的优秀催化活动。因为溶解酵素是低费用并且有抗菌剂性质，并且广泛地在食物保藏，药和药品的工业被使用了，我们的途径可以为实际应用为高质量的、非破坏性的 graphene 的制造打开一条新可伸缩的线路。

关键词： pH响应性溶菌酶分散体金纳米颗粒石墨催化剂装饰用金纳米粒子

Effect of Polyaniline as Hole-Acceptor and Energy-Acceptor on the Photoluminescence of CdSe

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chemical Research in Chinese Universities 2007年第2期23卷 131-134页

作者： ZHUANG Hong LIU Jing-bo ZENG Qing-hui KONG Xiang-gui Colledge of Light industry and Economics ＆ Management Jilin University Changchun 130062 P. R. China Key Laboratory of Excited State Process Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 P. R. China

The results of interaction between CdSe quantum dots and polyaniline were reported. Polyaniline effectively decreases the emission of CdSe quantum dots, and the CdSe luminescence lifetime is decreased by the addition of polyaniline. The mechanism of the emission observed in CdSe is assumed to result from the energy transfer and from the combination of surface-trapped electrons and holes energy is transferred from CdSe to polyaniline, and polyaniline occupies the hole sites.

关键词： CdSe Polyaniline Hole-acceptor Energy-acceptor

Determination of Sex Hormones in Antler Velvet by High Performance Liquid Chromatography Tandem Mass Spectrometry

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chemical Research in Chinese Universities 2012年第2期28卷 191-194页

作者： LU Chun-mei WANG Ming-tai MU Jun BAI Yu-ping DU Jian-shi ZHANG Han-qi WANG Jian-wei College of Chemistry Jilin UniversityChangchun 130012P.R.China China-Japan Union Hospital of jilin University Changchun 130021P.R.China jilin Entry-exit Inspection and Quarantine Bureau Changehun 130061R R.China China FAW Group corporation R&D Center Changchun 130011P.R.China institute of Applied Chemistry Chinese Academy of SciencesChangchun 130022P.R.China

Eighteen sex hormones in antler velvet were determined by high performance liquid chromatography tandem mass *** solid phase extraction was applied to eliminating the matrix *** experimental conditions were examined and *** the optimal conditions,the proposed method provides the good linearities and determination limits（0.2―1.0 μg/kg） of the analytes *** recoveries ranging from 72.3% to 149.5% were obtained for the target analytes at two concentration *** method was applied to the determination of eighteen sex hormones in different kinds of antler velvet samples and the obtained results are *** results indicate that the proposed method is suitable for the determination of sex hormones in antler velvet samples.

关键词： Antler velvet Liquid chromatography tandem mass spectrometry Sex hormone Solid-phase extraction