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journal of Earth Science 2016年第3期27卷 474-490页

作者： Fuhao xiong Changqian Ma Hong’an jiang Hang Zhang Key Laboratory of Tectonic Controls on Mineralization and Hydrocarbon Accumulation Ministry of Land and ResourcesCollege of Earth SciencesChengdu University of TechnologyChengdu 610059China State Key Laboratory of Continental Tectonics and Dynamics Institute of GeologyChinese Academy of Geological SciencesBeijing 100037China State Key Laboratory of Geological Processes and Mineral Resources China University ofGeosciencesWuhan 430074China Changsha Uranium Geology Research Institute CNNCChangsha 410007China

This study reports zircon U-Pb and Hf isotopes and whole-rock elemental data for granodiorites from the East Kunlun orogen. The zircon U-Pb dating defines their crystallization age of 235 Ma. The rocks are characterized by high-K calc-alkaline, magnesian and metaluminous with（K2O＋Na2O）=6.38 wt.%–7.01 wt.%, Mg#=42–50 [Mg#=100×molar Mg/（Mg＋Fe OT）], A/CNK=0.92–0.98, coupled with high εHf（t） values from-0.65 to-1.80. The rocks were derived from partial melting of a juvenile mafic crustal source within normal crust thickness. The juvenile lower crust was generated by mixing lithospheric mantle-derived melt（55%–60%） and supracrustal melt（40%–45%） during the seafloor subduction. Together with available data from the East Kunlun, it is proposed that the studied Middle Triassic granodiorites were formed in post-collisional extension setting, in which melting of the juvenile lower crust in response to the basaltic magma underplating resulted in the production of high-K granodioritic melts.

关键词： East Kunlun granodiorite geochronology Hf isotope magmatism

Microbial genes for degrading plant-derived carbon are a key factor affecting soil respiration and temperature sensitivity in plateau peatlands

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Pedosphere 2024年第6期34卷 1026-1037页

作者： Wei jiang Mingyao xiong Shuzhen ZOU Di KAng Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education) China West Normal University Key Laboratory of Environmental Science and Biodiversity Conservation (Sichuan Province) China West Normal University

Peatlands on the southwestern plateau of China are important carbon sinks for high-altitude terrestrial ecosystems in ***,the specific microecological mechanism responsible for alterations in carbon processes in this region due to the simultaneous impacts of global warming and drought has not been fully *** this mechanism will improve our understanding of carbon cycle feedback in peatland ecosystems,as it is affected by changes in hydrology and temperature,especially in vulnerable *** study examined the influence of soil carbon decomposition functional microorganisms on soil respiration and temperature sensitivity (expressed as Q10) in high-elevation peatlands using field investigations,simulated warming experiments,and metagenomic *** found that hydrothermal conditions had a significant effect on soil respiration,leading to an increase in cumulative soil respiration as soil moisture and temperature *** moisture affected soil respiration and soil organic carbon mainly through soil microorganisms,with a predominance of carbon-decomposing *** found that genes regulating the decomposition of plant-derived carbon such as cellulose and lignin were the critical factor influencing Q10in *** involved in cellulose and lignin decomposition showed a significant positive correlation with Q10（P10（P<0.05）.Specifically,genes such as ACO,xylF,and hpaE,which are involved in lignin decomposition,and glgB,which is responsible for cellulose decomposition,showed significant positive correlations （P<0.05） with ***,the gene uxaC,involved in the decomposition of hemicellulose,showed a significant negative correlation （P<0.05） with ***,we analyzed the relevant carbon metabolic pathways and found that although they were affected by water,they were not significantly related to *** short,th

关键词： carbon cycle carbon decomposition drought global warming lignin metagenomic sequencing microbial functional gene

Silver-Catalyzed Three-Component Coupling of Carbon Dioxide, Amines and α-Diazoesters

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Chinese journal of Chemistry 2018年第5期36卷 399-405页

作者： Chaorong Qi Donghao Yan Wenfang xiong Huanfeng jiang Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of TechnoFogy Guangzhou Guangdong 510640 China State Key Lab of Luminescent Materials and Devices South China University of Technology Guangzhou Guangdong 510640 China

A silver-catalyzed three-component coupling reaction of carbon dioxide, amines and α-diazoesters has been developed for the first time. The novel reaction provides an efficient and practical methodology for the synthesis of a wide range of new α-carbamoyloxy esters, which are difficult to prepare by existing methods. The advantages of the method include the use of readily available starting materials, simple catalytic system, good atom economy and high functional group tolerance.

关键词： carbon dioxide fixation carbamates diazo compounds multicomponent reactions silver

Treatment of postoperative gastric cancer with Fuzheng Huoxue anticancer prescription

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World journal of Gastroenterology 1997年第3期3卷 61-63页

作者： ZHOU A Gao 1, HUAng Da Wei 2, DIng Yu xiong 1, jiang Hua 3 and TAng Ming Lin 1

AIM Study on the effects of Fuzheng Huoxue anticancer prescription (Traditional Chinese Medicine) in treating gastric cancer. METHODS Sixty nine patients with gastric cancer of mid or late stage were confirmed histologically. They were divided into two groups. The treatment group included 35 cases (26 males and 9 females, 2 cases aged from 33～40 years, 18 from 41～60, 15 from 61～75, mean 58 4 years). The control group included 23 males and 11 females, 4 aged 33～40 years, 16 41～60, 14 61～75, averaging 56 8 years. The two groups were not significantly different in sex, age, clinical and pathological stages, operation mode, etc. The two group were given similar treatment. The treatment group was given Fuzheng Huoxue anticancer prescription. The cell line SGC 7901 was inoculated to the back of 30 nude mice under sterile condition. The nude mice were allocated randomly into control, traditional Chinese medicine and chemotherapeutic groups with 10 mice in each group with similar weight. Each nude mouse in control group received 0 5ml saline/day. The Fuzheng Huoxue anticancer prescreption was given to the traditional Chinese medicine group, 0 5ml/day (containing 1 5g crude drug) chamotherapentic group was injected with 1mg 5 Fu intraperitoneally once a week for 8 weeks. RESULTS Before treatment, OKT8 was 45 94±8 45%, OKT4/OKT8 was 0 89±0 19, AT Ⅲ was 29 9mg/dl±7 9mg/dl, Fa was 50 4%±24 4%, β TG was 91 0ng/dl±25 9ng/dl in treatment group; OKT8 was 49 21%±6 60%, OKT4/OKT8 was 0 94±0 20, AT Ⅲ was 32 3mg/dl±7 2mg/dl, Fa was 57 3%±24 6%, β TG was 87 5ng/dl±34 2ng/dl in controls before treatment. After treatment, OKT8 was 33 52%±7 80%, OKT4/OKT8 was 1 47±0 51, AT Ⅲ was 38 8mg/dl±5 5mg/dl, Fa was 102 6%±31 6%, β TG was 62 3ng/dl±15 1ng/dl in treatment group and OKT8 was 42 22%±7 07%, OKT4/OKT8 was 1 12±0 24, AT Ⅲ was 30 9mg/dl±8 0mg/dl, Fa was 64 6%±26 9%, β TG was 67 0ng/dl±42 1ng/dl in controls. After treatment, the T

关键词： stomach neoplasms/TCM therapy Fuzheng Huoxue survival rate T lymphocyte subsets medicine, Chinese traditional

Bioaccumulation of polychlorinated biphenyls in prawns and a mud crab from mixed-aquaculture ponds

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Acta Oceanologica Sinica 2009年第6期28卷 111-117页

作者： jiang jinhua Environmental Engineering Department Taizhou College Linhai 317000 China

The bioaccumulation of ten polychlorinated biphenyl （PCB） congeners was investigated within different tissues in three prawns （Penaeusorientalis Kishinouce, Laomedia astacina de Haan and Penaeus vannamei Boone） and one mud crab （Scylla serrata Forsskal） from mixed-aquaculture ponds in Taizhou in April 2007. The average concentrations （wet mass） of ∑ PCBs in muscle, head, and rind tissues for mean among these prawn species were 7.04, 21.16, and 11.47 ng/g, respectively. The average concentrations of ∑ PCBs in muscle, branchia, and spawn in Scylla serrata were 6.49, 21.13, and 19.76 ng/g, respectively. The concentrations of CB28 were the highest in prawn tissues （2.40 ng/g）, and accounted for 18.60% of ∑ PCBs. The concentration of CB52 was the lowest. The application of principal component analysis （PCA） for the estimation of PCB sources of contamination resulted in first component main contributions of CB101, CB153 and CB28 in the muscle, head, and rind in combined prawn samples, respectively. The enrichment level of PCBs for different tissues varied greatly. The accumulation coefficient of ∑ PCBs in prawn muscle, head, and rind tissues were 396.35, 1 191.79, and 645.91, respectively. For the Scylla serrata, the accumulation coefficients were 365.81, 1 190.50, and 1 113.31 for muscle, branchia, and spawn tissues, respectively. For prawns, the accumulation coefficient of CB153 was the highest in muscle tissues, while CB155 had the highest coefficients in the head and rind tissues. The CB155 coefficient was the highest in spawn tissues of the mud crab.

关键词： bioaccumulation polychlorinated biphenyls prawn Scylla serrata

Ion current rectification: from nanoscale to microscale

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Science China Chemistry 2019年第10期62卷 1346-1359页

作者： Tianyi xiong Kailin Zhang Yanan jiang Ping Yu Lanqun Mao Beijing National Laboratory for Molecular Sciences Key Laboratory of Analytical Chemistry for Living BiosystemsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100149China

Ion current rectification(ICR)is an electrodynamic phenomenon in electrolyte solution which is defined as the asymmetric potential-dependent ion flux through a confined environment,giving rise to asymmetric electrical current-voltage characteristics induced by the influence of an asymmetric electrical double layer *** the discovery of the ICR phenomenon,the observation and application of ICR at nanoscale and microscale have been widely investigated experimentally and ***,the recent progress of ICR from nanoscale to microscale is systematically ***/micropore structures of different materials,shapes and pore sizes are first ***,the factors influencing ICRs by thermodynamically or kinetically regulating the electrical double layer structure are ***,theoretical models are presented to explain the mechanism of *** on the understanding of this phenomenon,the applications,especially in biosensors,are ***,future developments of this area are briefly *** review covers the representative related literature published since 2010 and is intended to give a systematic introduction to this area.

关键词： ion current rectification ion transport nanopore nanochannel micropipette

Visible and Ultraviolet Reflectivity of Hg_(0.8)Cd_(0.2)Te

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Chinese Physics Letters 1996年第12期13卷 937-939页

作者： jiang Run-qing HU Xie-rong FAng jia-xiong Infrared and Remote Sensing Research Laboratory Shandong UniversityJi’nan 250100 Shanghai Institute of Technical Physics Chinese Academy of SciencesShanghai 200083

The fundamental reflectivity spectra of Hg_(0.8)Cd_(0.2)Te have been *** feature of the spectra is the presence of E_(1) and E_(2) peaks within the fundamental absorption region.A three dimensional saddle point is used to fit the E_(1) and E_(1)+Δ_(1) critical point and some simulated calculation is done for E_(2) at X *** measured and calculated reflectivities are compared and prominent features of the reflectivity spectra are identified with critical point transition at the and X points in the Brillouin zone.

关键词： reflectivity critical spectra

Confidentiality-aware message scheduling for security-critical wireless networks

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journal of Systems Engineering and Electronics 2010年第1期21卷 154-160页

作者： Wei jiang Guangze xiong Xuyang Ding Zhengwei Chang Nan Sang College of Computer Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 E R. China

Without considering security, existing message scheduling mechanisms may expose critical messages to malicious threats like confidentiality attacks. Incorporating confidentiality improvement into message scheduling, this paper investigates the problem of scheduling aperiodc messages with time-critical and security-critical requirements. A risk-based security profit model is built to quantify the security quality of messages; and a dynamic programming based approximation algorithm is proposed to schedule aperiodic messages with guaranteed security performance. Experimental results illustrate the efficiency and effectiveness of the proposed algorithm.

关键词： security-critical wireless networks confidentialityaware real-time message scheduling.

Determination of Surface Roughness in Wire and Arc Additive Manufacturing Based on Laser Vision Sensing

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Chinese journal of Mechanical Engineering 2018年第4期31卷 133-139页

作者： jun xiong Yan-jiang Li Zi-Qiu Yin Hui Chen School of Materials Science and Engineering Southwest Jiaotong University

Wire and arc additive manufacturing(WAAM) shows a great promise for fabricating fully dense metal parts by means of melting materials in layers using a welding heat source. However, due to a large layer height produced in WAAM, an unsatisfactory surface roughness of parts processed by this technology has been a key issue. A methodology based on laser vision sensing is proposed to quantitatively calculate the surface roughness of parts deposited by *** for a camera and a laser plane of the optical system are presented. The reconstruction precision of the laser vision system is verified by a standard workpiece. Additionally, this determination approach is utilized to calculate the surface roughness of a multi-layer single-pass thin-walled part. The results indicate that the optical measurement approach based on the laser vision sensing is a simple and effective way to characterize the surface roughness of parts deposited by WAAM. The maximum absolute error is less than 0.15 mm. The proposed research provides the foundation for surface roughness optimization with different process parameters.

关键词： Wire and arc additive manufacturing Surface roughness measurement Laser vision sensing Three-dimensional reconstruction

Reconstructing shock front of unstable detonations based on multi-layer perceptron

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Acta Mechanica Sinica 2021年第11期37卷 1610-1623,I0001页

作者： Lin Zhou Honghui Teng Hoi Dick ng Pengfei Yang Zonglin jiang School of Aerospace Engineering Beijing Institute of TechnologyBeijing100081China State Key Laboratory of Laser Propulsion and Application Beijing Power Machinery InstituteBeijing100074China Department of Mechanical Industrial and Aerospace EngineeringConcordia UniversityMontrealQCH3G 1M8Canada State Key Laboratory of High Temperature Gas Dynamics Institute of MechanicsChinese Academy of SciencesBeijing100190China School of Engineering Sciences University of Chinese Academy of SciencesBeijing100049China

The dynamics of frontal and transverse shocks in gaseous detonation waves is a complex phenomenon bringing many difficulties to both numerical and experimental *** laser-optical visualization of detonation structure may provide certain information of its reactive front,but the corresponding lead shock needs to be reconstructed building the complete flow *** the multi-layer perceptron(MLP)approach,we propose a shock front reconstruction method which can predict evolution of the lead shock wavefront from the state of the reactive *** method is verified through the numerical results of one-and two-dimensional unstable detonations based on the reactive Euler equations with a one-step irreversible chemical reaction *** show that the accuracy of the proposed method depends on the activation energy of the reactive mixture,which influences prominently the cellular detonation instability and hence,the distortion of the lead shock *** select the input variables for training and evaluate their influence on the effectiveness of the proposed method,five groups,one with six variables,and the other with four variables,are tested and analyzed in the MLP *** trained MLP is tested in the cases with different activation energies,demonstrates the inspiring generalization *** paper offers a universal framework for predicting detonation frontal evolution and provides a novel way to interpret numerical and experimental results of detonation waves.

关键词： Cellular detonation Lead shock evolution Multi-layer perceptron Numerical simulations