检索结果-南通市图书馆

Nitrogen removal from coal gasification wastewater by activated carbon technologies combined with short-cut nitrogen removal process

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2014年第11期26卷 2231-2239页

作者： Qian Zhao Hongjun han Baolin Hou Haifeng Zhuang Shengyong Jia Fang Fang State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology

A system combining granular activated carbon and powdered activated carbon technologies along with shortcut biological nitrogen removal （gAC-PACT-SBNR） was developed to enhance total nitrogen （TN） removal for anaerobically treated coal gasification wastewater with less need for external carbon resources. The TN removal efficiency in SBNR was significantly improved by introducing the effluent from the gAC process into SBNR during the anoxic stage, with removal percentage increasing from 43.8%49.6% to 68.8%-75.8%. However, the TN removal rate decreased with the progressive deterioration of gAC adsorption. After adding activated sludge to the gAg compartment, the granular carbon had a longer service-life and the demand for external carbon resources became lower. Eventually, the TN removal rate in SBNR was almost constant at approx. 43.3%, as compared to approx. 20.0% before seeding with sludge. In addition, the production of some alkalinity during the denitrification resulted in a net savings in alkalinity requirements for the nitrification reaction and refractory chemical oxygen demand （COD） degradation by autotrophic bacteria in SBNR under oxic conditions. PACT showed excellent resilience to increasing organic loadings. The microbial community analysis revealed that the PACT had a greater variety of bacterial taxons and the dominant species associated with the three compartments were in good agreement with the removal of typical pollutants. The study demonstrated that pre-adsorption by the gAC-sludge process could be a technically and economically feasible method to enhance TN removal in coal gasification wastewater （CgW）.

关键词： Coal gasification wastewater Short-cut nitrogen removal granular activated carbon PCR-DggE Denitrification enhancement

Solid-state synthesis of Li[Li_(0.2)Mn_(0.56)Ni_(0.16)Co_(0.08)]O_2 cathode materials for lithium-ion batteries

在线全文

学校读者我要写书评

暂无评论

Particuology 2014年第4期12卷 18-26页

作者： Wenjuan Hao hanhui Zhan han Chen Yanhong Wang Qiangqiang Tan Fabing Su School of Environment Science and Spatial Informatics.China University of Mining and Technology State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of Sciences

Layered Li[Li0.2Mn.56Ni0.6Co0.08]O2 cathode materials were synthesized via a solid-state reaction for Liion batteries, in which lithium hydroxide monohydrate, manganese dioxide, nickel monoxide, and cobalt monoxide were employed as metal precursors. To uncover the relationship between the structure and electrochemical properties of the materials, synthesis conditions such as calcination temperature and time as well as quenching methods were investigated. For the synthesized Li[Li0.2Mn.56Ni0.6Co0.08]O2 materials, the metal components were found to be in the form of Mn4＋, Ni2＋, and Co3＋, and their molar ratio was in good agreement with stoichiometric ratio of 0.56：0.16：0.08. Among them, the one synthesized at 800 ℃ for 12 h and subsequently quenched in air showed the best electrochemical performances, which had an initial discharge specific capacity and coulombic efficiency of 265.6 mAh/g and 84.0%, respectively, and when cycled at 0.5, 1, and 2 C, the corresponding discharge specific capacities were 237.3, 212.6, and 178.6 mAh/g, respectively. After recovered to 0.1 C rate, the discharge specific capacity became 259.5 mAh/g and the capacity loss was only 2.3% of the initial value at 0.1 C. This work suggests that the solid-state synthesis route is easy for preparing high performance Li[Li0.2Mn0.56Ni0.16Co0.08]O2 cathode materials for Li-ion batteries.

关键词： Lithium-ion batteriesCathode materialSolid-state synthesisLithium-rich materialElectrochemical properties

Ionic Liquids-Assisted Highly Luminescent Copper Nanoclusters with Triangle Supramolecular Nanostructures

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2021年第7期39卷 1867-1870页

作者： Bingyan han Qin Yan Ze Xin Qifang Yan Jingmei Jiang State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalianLiaoning116023 China School of Chemical Engineering Dalian University of TechnologyPanjinLiaoning124221 China

Main observation and conclusion A novel and facile approach towards highly luminescent CuNCs@MMI(2-mercapto-1-methylimidazole)has been developed within 30 s with the assistance of ionic liquids(ILs)-[Bmim]BF_(4).FT-IR... 详细信息

关键词： Nanostructures Ionic liquids Aggregation Surface analysis [Bmim]BF_(4)

Propagation Mechanism of Cylindrical Cellular Detonation

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2012年第10期29卷 239-243页

作者： han Wen-Hu WANg Cheng NINg Jian-guo State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081

We investigate the evolution of cylindrical cellular detonation with different *** numerical results show that with decreasing initial temperature,detonation becomes more unstable and the cells of the cylindrical detonation tend to be *** stable detonation,a divergence of cylindrical detonation cells is formed eventually due to detonation instability resulting from a curved detonation *** mildly unstable detonation,local overdriven detonation *** detonation cell diverges and its size *** highly unstable detonation,locally driven detonation is more obvious and the front is highly *** a result,the diverging cylindrical detonation cell becomes highly irregular.

关键词： cylindrical irregular eventually

Microstructure and thermal conductivity of copper matrix composites reinforced with mixtures of diamond and SiC particles

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2012年第1期31卷 58-63页

作者： han, Yuanyuan guo, Hong Yin, Fazhang Zhang, Ximin Chu, Ke Fan, Yeming Nonferrous Metals Processing Division General Research Institute for Nonferrous Metals Beijing 100088 China

The thermal conductivity of diamond hybrid SiC/Cu,diamond/Cu and SiC/Cu composite were calculated by using the extended differential effective medium (DEM) theoretical model in this *** effects of the particle volume fraction,the particle size and the volume ratio of the diamond particles to the total particles on the thermal conductivity of the composite were *** DEM theoretical calculation results show that,for the diamond hybrid SiC/Cu composite,when the particle volume fraction is above 46% and the volume ratio of the diamond particles to the SiC particles is above 13:12,the thermal conductivity of the composite can reach 500 W·m-1·*** thermal conduc-tivity of the composite has little change when the particle size is above 200μ*** experimental results show that Ti can improve the wettability of the SiC and *** thermal conductivity of the diamond hybrid SiCTi/Cu is almost two times better than that of the diamond hybrid SiC/*** is feasible to predict the thermal conductivity of the composite by DEM theoretical model.

关键词： diamond hybrid SiC/Cu composite microstructure thermal conductivity differential effective medium

Synthesis and immunological study of a glycosylated wall teichoic acid-based vaccine against Staphylococcus aureus

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2023年第4期34卷 193-197页

作者： Peng Shen han Lin Yikai Bao Haofei Hong Zhimeng Wu Key Laboratory of Carbohydrate Chemistry&Biotechnology Ministry of EducationSchool of BiotechnologyJiangnan UniversityWuxi 214122China

Staphylococcus aureus wall teichoic acids(WTAs) are attractive targets for antibacterial vaccine development. In this study, three core glycosylated WTA structure, including α-1,4-glc NAc, β-1,4-glc NAc andβ-1,3-glc NAc modified ribitol phosphates containing a linker are chemically synthesized and conjugated with tetanus toxin(TT) carrier protein as vaccine candidates. In vivo immunological studies demonstrate that the synthesized glycosylated WTAs display high immunogenicity and all conjugates provoke strong immune responses and elicit high levels of specific Igg antibodies against the glc NAc-modified WTA. Furthermore, antibodies elicited by the vaccine candidates remain the capability to recognize S. aureus cells and display significant opsonophagocytic activity to clear S. aureus. This study demonstrates that the core structure of glycosylated WTAs are effective antigens for constructing anti-S. aureus vaccines to prevent and control S. aureus infections.

关键词： WTAs Staphylococcus aureus glcNAc modifications glycoconjugates Antibacterial vaccine

Unifying colors by primes

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2023年第2期12卷 207-219页

作者： han-Lin Li Shu-Cherng Fang Bertrand M.T.Lin Way Kuo Department of Management Science City University of Hong KongHong KongChina Department of Industrial and Systems Engineering North Carolina State UniversityRaleighNC 27695USA institute of Information Management Yang Ming Chiao Tung UniversityTaiwanChina Hong Kong Institute for Advanced Study City University of Hong KongHong KongChina

RgB and CYMK are two major coloring schemes currently available for light colors and pigment colors,*** systems use letter-based color codes that require a large range of values to represent different *** problem is that these two systems are hard to use for manipulating any operations involving combinations of colors,and they lack the capacity for inter-changeability or *** on prime number theory and goldbach's conjecture,this study presents a universal color system(C235)using a number-based structure to encode,compute and unify all colors on a color *** proposed C235 system offers a unified representation for the efficient encoding and effective manipulation of *** can be applied to designing a high-rate LCD system and colorizing objects with multiple attributes and DNA codons,opening the door to manipulating colors and lights for even broader applications.

关键词： system unified letter

Deep Learning Based Attack Detection for Cyber-Physical System Cybersecurity:A Survey

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2022年第3期9卷 377-391页

作者： Jun Zhang Lei Pan Qing-Long han Chao Chen Sheng Wen Yang Xiang IEEE the School of Science Computing and Engineering TechnologiesSwinburne University of Technology the School of Information Technology Deakin University the College of Science and Engineering James CookUniversity

With the booming of cyber attacks and cyber criminals against cyber-physical systems(CPSs),detecting these attacks remains *** might be the worst of times,but it might be the best of times because of opportunities brought by machine learning(ML),in particular deep learning(DL).In general,DL delivers superior performance to ML because of its layered setting and its effective algorithm for extract useful information from training *** models are adopted quickly to cyber attacks against CPS *** this survey,a holistic view of recently proposed DL solutions is provided to cyber attack detection in the CPS context.A six-step DL driven methodology is provided to summarize and analyze the surveyed literature for applying DL methods to detect cyber attacks against CPS *** methodology includes CPS scenario analysis,cyber attack identification,ML problem formulation,DL model customization,data acquisition for training,and performance *** reviewed works indicate great potential to detect cyber attacks against CPS through DL ***,excellent performance is achieved partly because of several highquality datasets that are readily available for public ***,challenges,opportunities,and research trends are pointed out for future research.

关键词： Cyber-physical system cybersecurity deep learning intrusion detection pattern classification

A FRET biosensor reveals free zinc deficiency in diabetic beta-cell vesicles

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2020年第2期31卷 468-472页

作者： Yi Xian Mengxuan Zhou Shangchen han Rong Yang Yi Wang College of Life Science and Technology Huazhong University of Science and TechnologyWuhan 430074China Peking-Tsinghua Center for Life Sciences PKU-IDG/McGovern Institute for Brain ResearchAcademy for Advanced Interdisciplinary StudiesPeking UniversityBeijing 100871China State Key Laboratory of Membrane Biology Beijing Key Laboratory of Cardiometabolic Molecular MedicineInstitute of Molecular MedicinePeking UniversityBeijing 100871China

The concentration of free zinc within insulin-storing vesicles is important for vesicle maturity and therefore requires accurate ***,common small-molecule intensity-based probes and most available genetically encoded Forster resonance energy transfer(FRET)-based sensors for zinc are unsuitable for estimating the free zinc concentration in insulin-storing ***,we have developed a novel FRET-based zinc sensor based on the RINg motif of TRIM72,referred to as ZnT72 R,which has an approximate K_d that varies from 6.07±0.28 μmol/L to 7.84±0.42μmol/L in vitro and a cytosol-calibrated K_d of approximately 55.56±4.59μmol/L in HEK293T *** pinpoint the free zinc concentration of insulin-storing vesicles,we initially targeted ZnT72R to beta-cell vesicles by fu sing them to NPY(neuropeptide Y).Following NPY-ZnT72R labeling,the FRET intensity ratios of vesicles were *** found that the free zinc concentration in insulin-storing vesicles of diabetic db/db mice(28.30±1.33μmol/L) was significantly lower than that of control mice(41.46±3.53μmol/L).

关键词： Zinc FRET Insulin Biosensor Beta cell Vesicle Diabetes