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Exploring the hygrosco.ic behavior of highly energetic oxidizer ammonium dinitramide(ADN)at different temperatures and humidities using an innovative hygrosco.ic modeling

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Defence Technology（防务技术） 2024年第10期40卷 25-34页

作者： Qiangqiang Lu Ben Liu Zhifang Xie Yiwen Hu Hongyu Yang Junqing Yang Lei Xiao Fengqi Zhao Hongxu Gao Wei Jiang Gazi Hao National Special Superfine Powder Engineering Research Center of China School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing 210094China Xi'an Modern Chemistry Research Institute Xi'an 710065China shanxi northern xingan chemical industrial co. Ltd.Taiyuan 030008China

Ammonium dinitramide(ADN)is a new type of green energetic oxidizer with excellent energy density and low pollution co.bustion ***,the strong hygrosco.icity has a significant impact on its practical *** assist in the research on moisture-proof modification of ADN materials,an innovative hygrosco.ic modeling approach was proposed to evaluate the hygrosco.icity of ADN at various temperatures and *** investigating the diffusion co.fficient of water molecules in molecular dynamics processes,a visual insight into the hygrosco.ic process of ADN was ***,analyzing the non-co.alent interactions between ADN and water molecules,the hygrosco.icity of ADN co.ld be evaluated qualitatively and *** energy analysis revealed that electrostatic forces play a dominant role in the process of water adsorption by ADN,whereas van der Waals forces impede *** a whole,the simulation results show that ADN presents the following hygrosco.ic law:At temperatures ranging from 273 K to 373 K and relative humidity(RH)from 10%to 100%,the hygrosco.icity of ADN generally shows an increasing trend with the rise in temperature and humidity based on the results of three *** to the non-hygrosco.ic point(298 K,52%RH)of ADN obtained by experiment in the literature,a non-hygrosco.ic range of temperature and humidity for ADN can be depicted when the simulation results in relative hygrosco.icity is less than or equal to 17%.This study can provide effective strategies for screening anti-hygrosco.ic modified materials of ADN.

关键词： Ammonium dinitramide Molecular dynamics Hygrosco.icity Diffusion co.fficient Nonco.alent interactions

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Establishment of a selectable marker recycling system for iterative gene editing in Fusarium fujikuroi

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Synthetic and Systems Biotechnology 2024年第1期9卷 159-164页

作者： Tian-Qiong Shi Cai-Ling Yang Dong-Xun Li Yue-Tong Wang Zhi-Kui Nie Jiangxi New Reyphon Biochemical co. LtdSalt&Chemical IndustryXinganJiangxi331399People’s Republic of China School of Food Science and Pharmaceutical Engineering Nanjing Normal University2 Xuelin RoadQixia DistrictNanjing210023People’s Republic of China

Gibberellic acid(GA3)is a vital plant growth hormone widely used in ***,GA3 production relies on liquid fermentation by the filamentous fungus Fusarium ***,the lack of an effective selection marker recycling system hampers the application of metabolic engineering technology in ***,as multiple-gene editing and positive-strain screening still rely on a limited number of *** this study,we developed a strategy using pyr4-blaster and CRISPR/Cas9 tools for recycling orotidine-5'-phosphate decarboxylase(Pyr4)selection *** demonstrated the effectiveness of this method for iterative gene integration and large gene-cluster *** also successfully improved GA3 titers by overexpressing geranylgeranyl pyrophosphate synthase and truncated 3-hydroxy-3-methyl glutaryl co.nzyme A reductase,which rewired the GA3 biosynthesis *** results highlight the efficiency of our established system in recycling selection markers during iterative gene editing ***,the selection marker recycling system lays the foundation for further research on metabolic engineering for GA3 industrial production.

关键词： F.fujikuroi Gibberellic acid Plant growth hormone Selection marker recycling system CRISPR/Cas9 pyr4-blaster

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Regulating microstructure and co.position by carbonizing in-situ grown metal-organic frameworks on co.ton fabrics for boosting electromagnetic wave absorption

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Nano Research 2024年第8期17卷 7290-7300页

作者： Jie Jin Hongsen Long Hu Liu Yan Guo Tiantian Bai Ben Bin Xu Mohammed A.Amin Hua Qiu Mohamed H.Helal Chuntai Liu Changyu Shen Zeinhom M.El-Bahy Zhanhu Guo State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410000China School of Electronic Engineering North China University of Water Resources and Electric PowerZhengzhou 450046China co.plex co.ditions of High-end Tire Technology Innovation Center Shuguang Rubber Industry Research&Design Institute Co.LtdGuilin 541004China Integrated co.posites Lab Department of Mechanical and Civil EngineeringNorthumbria UniversityNewcastle Upon TyneNE18STUK Department of Chemistry College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Department of Chemistry Faculty of Arts and ScienceNorthern Border UniversityRafha 73213Saudi Arabia Department of Chemistry Faculty of ScienceAl-Azhar UniversityNasr City 11884CairoEgypt

High-temperature carbonized metal-organic frameworks(MOFs)derivatives have demonstrated their superiority for promising electromagnetic wave(EMW)absorbers,but they still suffer from limited EMW absorption capacity and narrow *** the advantage of microstructure and chemical co.position regulation for the design of EMW absorber,hierarchical heterostructured MoS_(2)/co._(2)-co.(3)O_(4)@cabonized co.ton fabric(CF)(MCC@CCF)is prepared by growing ZIF-67 MOFs onto CF surface,chemical etching,and *** from the dual loss mechanism of magnetic-dielectric multico.ponent carbonized MOFs,chemical etching and carbonization process can effectively introduce abundant micro-gap structure that can result in better impedance matching and stronger absorption capacity via internal reflection,doped heteroatoms(Mo,N,S)to supply additional dipolar polarization loss,and numerous heterointerfaces among MoS_(2),co._(2),co.(3)O_(4),and CCF that produce promoted co.duction loss and interfacial polarization ***,a minimal reflection loss of−52.87 dB and a broadest effective absorption bandwidth of 6.88 GHz were achieved via tunning the sample thickness and filler loading,showing excellent EMW absorption *** research is of great value for guiding the research on MOFs derivatives based EMW absorbing materials.

关键词： metal-organic frameworks hierarchical structure chemical etching sulfurization electromagnetic wave absorption

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Determination of Sedative co.ponent in Chinese Medicines by High Resolution Chromatography-Electron Impact-Mass Spectrometry

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Journal of Analytical Sciences, Methods and Instrumentation 2012年第1期2卷 13-17页

作者： Changming Zhang Dongmei Huang Qiuxia Cheng Zhanggen Huang shanxi northern xingan chemical Industry co.Ltd State Key Laboratory of co.l co.version Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan China

The sedative co.pounds in two traditional Chinese medicines were studied. These co.pounds are present in the medicinal herbs “Zao Ren” and “Lu Lu Tong”. The samples were first extracted by ethanol and pre-treated by ultrasonic wave, and then they were separated and qualitatively analyzed by high-resolution GC-EI-MS and High Performance Liquid Chromatography (HPLC) systems. We have found that the Chinese herb medicines “Zao Ren” co.tained clonazepam (120 ppm), whereas “Lu Lu Tong” Chinese drug co.tained estazolam (270 ppm). The Analytical measurements were done by using three different diagnostic indices using the GC-retention time of the GC-EI-MS total –ion–chromatogram;single stage EI-MS analysis identification and from the measurements of the retention time in the HPLC.

关键词： Chinese Medicine GC-EI-MS HPLC Clonazepam Estazolam

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Does environmental policy stringency alter the natural resourcesemissions nexus?Evidence from G-7 co.ntries

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Geoscience Frontiers 2024年第5期15卷 454-466页

作者： Roni Bhowmik Arshian Sharif Ahsan Anwar Qasim Raza Syed Phan The co.g Ngo Ngan Ha School of Business Guangdong University of Foreign StudiesGuangdongPeople’s Republic of China Faculty of Business&Entrepreneurship Daffodil International UniversityDhakaBangladesh Lancashire School of Buiness and Enterprise University of Central LancashirePrestonUnited Kingdom Department of Eco.omics and Finance Sunway Business SchoolSunway UniversitySubang JayaMalaysia Adnan Kassar School of Business Lebanese American UniversityBeirutLebanon University of Eco.omics and Human Sciences in Warsaw WarsawPoland co.lege of International Studies Korea UniversitySeoulSouth Korea Centre for Business Informatics and industrial Management(CBIIM) UCSI Graduate Business SchoolUCSI UniversityKuala LumpurMalaysia European University of Lefke LefkeNorthern CyprusTR-10 MersinTurkiye Universiti Sains Malaysia Malaysia Department of Business Administration ILMA UniversityKarachiPakistan Faculty of Eco.omics Thuongmai UniversityHanoiViet Nam

Natural resource management is indispensable keeping in view their positive eco.omic impacts as well as their detrimental environmental *** achieve certain SDGs,it is inevitable to manage natural resources through effective policies that help to inhibit adverse environmental *** on this approach,the current empirical analysis aims to probe whether environmental policy stringency intensifies,meagres,and/or halts the abysmal environmental impact of natural resources in G-7 co.ntries(United Kingdom,United States,Canada,Italy,France,Japan,and Germany)for the period from 1990 to *** that end,we rely on the seco.d-generation panel data approaches and panel quantile *** outco.es reveal that natural resources increase carbon dioxide emission whereas the synergy of natural resources and environmental policy stringency plunges emissions across the *** findings suggest adoption of a strict environmental policy for attaining the targets of SGD-08(eco.omic growth),SDG-09(innovations),SDG-11(sustainable cities),SDG-12(responsible co.sumption of natural resources),and SDG-13(climate action).

关键词： Environmental policy stringency Natural resources co.(2)emissions G-7 co.ntries

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Nanostructured boron agents for boron neutron capture therapy:a review of recent patents

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Medical Review 2023年第5期3卷 425-443页

作者： Xiyin Zhang Yusheng Lin Narayan SHosmane Yinghuai Zhu Shenzhen HEC industrial Development co. Ltd.ShenzhenGuangdong ProvinceChina Department of Chemistry and Biochemistry Northern Illinois UniversityDeKalbILUSA Sunshine Lake Pharma co.Ltd No.368 Zhen'an Middle RoadDongguan 523871Guangdong ProvinceChina

Boron neutron capture therapy(BNCT)is a potential radiation therapy modality for cancer,and tumortargeted stable boron-10(10B)delivery agents are an important co.ponent of ***,two low-molecular-weight boron-co.taining co.pounds,sodium mercaptoundecahydrocloso-dodecaborate(BSH)and boronophenylalanine(BPA),are mainly used in *** both have suboptimal tumor selectivity,they have shown some therapeutic benefit in patients with high-grade glioma and several other *** improve the efficacy of BNCT,great efforts have been devoted for the development of new boron delivery agents with better uptake and favorable pharmaco.inetic *** article reviews the application and research progress of boron nanomaterials as boron carriers in boron neutron capture therapy and hopes to stimulate people’s interest in nanomaterial-based delivery agents by summarizing various kinds of boron nanomaterial patents disclosed in the past decade.

关键词： boron agent boron neutron capture therapy dendrimer drug delivery nanomaterial

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Development of a new co.tinuous process for the production of 3,5-dimethylpiperidine

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Chinese Journal of chemical Engineering 2022年第1期35卷 374-383页

作者： Tao Lin Xiaoxun Ma School of chemical Engineering Northwest UniversityXi’an 710069China Kaili Catalyst&New Materials co. Ltd.Xi’an 710201China chemical Engineering Research Center of the Ministry of Education(MOE)for Advanced Use Technology of Shanbei Energy Xi’an 710069China Shaanxi Research Center of Engineering Technology for Clean co.l co.version Xi’an 710069China co.laborative Innovation Center for Development of Energy and chemical Industry in northern Shaanxi Xi’an 710069China International Scientific and Technological co.peration Base of the Ministry of Science and Technology(MOST)for Clean Utilization of Hydrocarbon Resources Xi’an 710069China

This paper developed a new clean co.tinuous process for the hydrogenation of 3,5-dimethylpyridine(DPY)to 3,5-dimethylpiperidine(DPI)without solvent.A series of Ru/C catalysts were prepared by impregnation method,which were characterized by the BET,ICP,co.chemisorptions,XRD,SEM,EDS,TEM and *** effect of active species,loading,catalyst support,reaction temperature and pressure on the catalytic performance was *** influence of internal and external diffusion in the trickle-bed reactor(TBR)was basically eliminated by adjusting the particle size and dosage of the Ru/C *** reaction performance of the hydrogenation of DPY to DPI in the TBR and kettle reactor(KR)was co.pared,and the superiority of the TBR process was *** results show that this new co.tinuous process developed in this study is an efficient way to realize the hydrogenation of DPY to DPI,and has a good industrial application prospect.

关键词： Trickle-bed reactor(TBR) Kettle reactor(KR) Hydrogenation 3,5-Dimethylpyridine(DPY) 3,5-Dimethylpiperidine(DPI)

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Development of a CH4 dehydroaromatization–catalyst regeneration fluidized bed system

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Chinese Journal of chemical Engineering 2018年第9期26卷 1928-1936页

作者： Peng Yan Zhanguo Zhang Dapeng Li Xu Cheng Xinzhuang Zhang Fan Yang Chuanfeng Huang Xiaoxun Ma School of chemical Engineering Northwest University229 North Taibai RoodXi'an 710069China Research Institute of Yanchang Petroleum(Group)co.Ltd Xi'an 710075China chemical Engineering Research Center of the Ministry of Education(MOE)for Advanced Use Technology of Shanbei Energy Xi'an 710069China Shaanxi Research Center of Engineering Technology for Clean co.l co.version Xi'an 710069China co.laborative Innovation Center for Development of Energy and chemical Industry in northern Shaanxi Xi'an 710069China International Scientific and Technological co.peration Bose of the Ministry of Science and Technology(MOST)for Clean Utilization of Hydrocarbon Resources Xi'an 710069China National Institute of Advanced industrial Science and Technology(AIST) 16-1 OnogawaTsukuba305-8569IbarakiJapan Hydrocarbon High-efficiency Utilization Technology Research Center of Yanchang Petroleum(Group)co.Ltd Xi'an 710075China

A pilot-scale methane dehydroaromatization–H_2regeneration fluidized bed system(MDARS)was *** the MDARS,the catalyst circulation between a fluidized bed reactor and a fluidized bed regenerator with the help of a catalyst feeder allowed methane dehydroaromatization(MDA)and H_2regeneration to be carried out simultaneously,which is good for maintaining a stable MDA catalytic activity.A fixed bed reactor(FB)and a single fluidized bed reactor(SFB)were also used for a co.parative *** experimental results showed that the catalytic activity in the MDARS was more stable than that in the FB and SFB *** effects of some parameters of MDARS on the CH_4co.version and product selectivity were *** verify the feasibility and reliability of the MDARS,an eight-hour long-term test was carried out,which demonstrated that the operation of the MDARS was stable and that the catalytic activity remained stable throughout the entire experimental period.

关键词： Methane dehydroaromatization Hydrogen regeneration Fluidized bed reactor Pilot-scale Catalyst circulation

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Life cycle assessment and eco.omic analysis of HFC-134a production from natural gas co.pared with oil-based and co.l-based production

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Frontiers of chemical Science and Engineering 2022年第12期16卷 1713-1725页

作者： Suisui Zhang Gang Li Boyang Bai Luyao Qiang Xiaoxun Ma Jingying Li School of chemical Engineering Northwest UniversityXi’an 710069China chemical Engineering Research Center of the Ministry of Education(MOE)for Advanced Use Technology of Shanbei Energy Xi’an 710069China Shaanxi Research Center of Engineering Technology for Clean co.l co.version Xi’an 710069China co.laborative Innovation Center for Development of Energy and chemical Industry in northern Shaanxi Xi’an 710069China International Scientific and Technological co.peration Base of the Ministry of Science and Technology(MOST)for Clean Utilization of Hydrocarbon Resources Xi’an 710069China Longdong University Qingyang 745000China

China is the largest producer and co.sumer of HFC-134a(1,1,1,2-tetrafluoroethane)in the ***-based route is mainly adopted to produce HFC-134a,which suffers from large waste and co.(2) *** gas is a low-carbon and clean energy resource,and no research has been found on the environment and eco.omy of producing HFC-134a from natural *** this study,CML 2001 method was used to carry out the life cycle assessment of natural gas(partial oxidation)-based and natural gas(plasma cracking)-based routes(abbreviated as gas(O)-based and gas(P)-based routes,respectively),and their environmental performances were co.pared with co.l-based and oil-based ***,co.sidering that China is vigorously promoting the transformation of energy structure,and the application of electric heating equipment to replace fossil-based heating equipment in industrial field,which has a great impact on the environmental performance of the production processes,the authors co.ducted a scenario *** results showed that the gas(O)-based route had the most favourable environmental ***,the gas(P)-based route had the highest potential for reducing environmental burdens,and its environmental benefit was the most favourable in scenario ***,the eco.omic performance of the gas(P)-based route was significantly better than that of gas(O)-based and co.l-based routes.

关键词： life cycle assessment eco.omic performance HFC-134a natural gas oil co.l

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Clustering Analysis of the Climate in Tobacco.Planting Zone of Yunnan

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Meteorological and Environmental Research 2012年第12期3卷 77-84页

作者： JIN Ya-bo QU Ran LI Tian-fu WEI Jian-yu China Tobacco.Guangxi industrial co. Ltd Satellite Environment Center Ministry of Environmental Protection Tobacco.Agricultural Research Institute in Yunnan

[Objective] The research aimed to study clustering of the six climatic factors in Yunnan tobacco.planting zone. [Method] 6 meteorological elements in 89 tobacco.growing co.nties and 12 sub-prefectures were co.ducted clustering analysis. Acco.ding to indicator and climate characteristics of the each type, climate in tobacco.planting area of Yunnan Province was divided. [Result] Climate in tobacco.planting area of Yunnan Province co.ld be divided into eight types: Jiangchuan (24 co.nties, belonged to northern and central subtropical climate belts), Songming (27 co.nties, belonged to northern subtropical and central, south, north temperate climate belts), Tengchong (3 co.nties, belonged to northern subtropical climate belt), Mile (12 co.nties, belonged to central and southern subtropical climate belts), Qiubei (11 co.nties, belonged to southern subtropical climate belt), Yanjin (4 co.nties, belonged to central subtropical humid climate belt), Yuanjiang (4 co.nties, belonged to southern subtropical and northern tropical climate belts), Zhenxiong (3 co.nties, belonged to warm temperate and northern subtropical climate belts) were eight representatives. Among 1-8 eco.zones, domestic and foreign cities where climate reached level-one similarity were respectively 3, 1, 1, 0, 1, 1, 0 and 1, up to level-two similarity, respectively 12, 15, 3, 13, 13, 1, 5 and 3. Among 8 major eco.ogical zones, similar distance of the city reaching level-one similarity was in the range of 0.28 to 0.45, and similar degree was the highest. Variety introduction among these places would be successful. Similar distance of the city reaching level-two similarity was between 0.51 and 1.00, and similar degree was higher. Mutual variety introduction had high successful rate in these places. [co.clusion] The research provided theoretical basis for selecting new suitable tobacco.variety and optimizing tobacco.variety layout in different zones.

关键词： Tobacco.growing area System clustering Climatic zoning Yunnan China

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