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Characteristics of Hydrogen and Oxygen Isotopes and Noble Gas Isotopes in the Groundwater of Weishan, Wudalianchi, Northeast China

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Acta Geologica Sinica(English Edition) 2022年第5期96卷 1729-1741页

作者： WANG Shuai huang Xuelian QI Shihua HAN Yongjie KUANG Jian WANG Siqi WANG He xiao Zhicai School of Environmental Studies China University of GeosciencesWuhan 430078China State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430078China Chinese Academy of Geological Sciences Beijing 100037China Hydrogeological Engineering Geological Survey Institute of Heilongjiang Province Harbin 150030China

According to the hydrochemical characteristics, hydrogen and oxygen isotope characteristics and the ratio of noble gas isotopes of the sandstone aquifer and basalt aquifer, this study calculated the recharge temperature and residence time of groundwater in the Weishan area of Wudalianchi, also calculating the contribution of noble gas components from different sources to the samples. Based on the characteristics of hydrogen and oxygen isotopes and noble gases Xe and Ne, the recharge altitude and recharge temperature of the two aquifers were estimated, and the recharge temperature fitting with the NGT model as verified, the results showing that the main recharge altitude of groundwater in the region was 500–600 m, the recharge temperature being 2–7°C. He_(eq) and He_(ea) of the samples have been simulated using the OD model, the content of radioactive ~4He in the crust being obtained, the groundwater ages under the two conditions(closed condition and open condition) both being simulated. The results show that groundwater from the sandstone layer water is older than groundwater from the basalt layer. Hydrochemical characteristics and noble gas isotope ratios indicate that in the basalt aquifer and sandstone aquifer in the Weishan area, in addition to atmospheric and crustal helium, there is also an input of mantle-derived helium. The fault constitutes the uplift channel for groundwater containings mantle components, which results in the mantle source composition in water samples near the fault being much higher than those form non-fault areas.

关键词： groundwater hydrochemistry hydrogen and oxygen isotopes noble gases ~4He age mantle source input

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Analysis of the Dynamic Response of a Shield Tunnel in Soft Soil Under a Metro-Train Vibrating Load

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Journal of China University of Mining and Technology 2006年第4期16卷 509-513页

作者： DENG Fei-huang MO Hai-hong ZENG Qing-jun YANG xiao-jie College of Architecture ＆ Civil Engineering South China University of Technology Guangzhou Guangdong 510640 China School of Mechanics ＆ Civil engineering China University of Mining ＆ Technology Beijing 100083 China

This paper concerns the impact of an operating metro train on the structure of a shield tunnel lining and its soft foundation. An elastoplastic 3D dynamic finite difference model was established by using the FLAC3D numerical soft- ware. By fully considering the joints, the A-B-K segments and the soft stratum, the dynamic response of the shield tunnel buried in thick, soft soil under the vibrating load induced by a metro train was numerically simulated. The simulation result, for which the joint was considered, was compared with the result when the joint was not considered. The results show that an operating metro train induces a significant dynamic response in the structure of the lining of the shield tunnel and its soft foundation. The severe dynamic response zones of the lining structure are largely distributed in the range of the lower half of the segment-ring and the nearer to the bottom of the segment-ring, the more severe the response. Of two horizontally symmetric, corresponding places on the segment lining, the one near the joint is more severe in its dynamic response than that of the one far from the joint; the nearer the zone of the foundation soil to the lower half of the seg- ment-ring, the more severe the dynamic response. The maximum shear strain of the foundation soil takes place near the joint between two normal segments at the bottom. The dynamic response influenced by joints is more severe than the response not influenced by joints, showing that the non-joint assumption is somewhat impractical.

关键词： dynamic response train vibrating load joint shield tunnel segment

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Effect of Zuogui Pill(左归丸) on Monoamine Neurotransmitters and Sex Hormones in Climacteric Rats with Panic Attack

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Chinese Journal of Integrative Medicine 2017年第3期23卷 190-195页

作者： LI xiao-yu WANG xiao-yun Department of Gynecologic the Second Affiliated Hospital of Guangzhou University of Chinese Medicine Guangzhou 510120China Post-doctoral Research Center of Guangzhou University of Chinese Medicine Guangzhou 510405 China

Objective： To explore the effects of Chinese medicine prescription Zuogui Pill（左归丸, ZGP） on monoamine neurotransmitters and sex hormones in climacteric rats with induced panic attacks. Methods： Forty-eight climacteric female rats were randomized into 6 groups with 8 rats in each group： the control group, the model group, the low-, medium- and high-dose ZGP groups and the alprazolam group. Rats in the low-, medium- and high-dose ZGP groups were administered 4.725, 9.45, or 18.9 g/kg ZGP by gastric perfusion, respectively. The alprazolam group was treated by gastric perfusion with 0.036 mg/kg alprazolam. The control and model groups were treated with distilled water. The animals were pretreated once daily for 8 consecutive weeks. The behaviors of rats in the open field test and the elevated T-maze（ETM） were observed after induced panic attack, and the levels of brain monoamine neurotransmitters and the plasma levels of sex hormones were measured. Results： Compared with the control group, the mean ETM escape time and the levels of 5-hydroxytryptamine（5-HT） and noradrenalin（NE） of the model group were significantly reduced（P〈0.05）, Compared with the model group, the mean ETM escape time and the 5-HT and NE levels of all the ZGP groups increased significantly（P〈0.05 or P〈0.01）. However, no significant difference was observed in the levels of sex hormones between the groups. Conclusion： Pretreatment with ZGP in climacteric rats may improve the behavior of panic attack, which may be related to increased 5-HT and NE in the brain.

关键词： Zuogui Pill climacteric panic attack monoamine neurotransmitter sex hormone Chinese medicine

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Association between body mass index and the risk of bleeding in elderly patients with non-valvular atrial fibrillation taking dabigatran:a cohort study

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Journal of Geriatric Cardiology 2020年第4期17卷 193-201页

作者： Ming-Hui LI Li-Hua HU yu-Rong XIONG yu yu Wei ZHOU Tao WANG Ling-Juan ZHU Xi LIU Hui-Hui BAO xiao-Shu CHENG Department of Cardiovascular Medicine the Second Affiliated Hospital of Nanchang UniversityJiangxiChina Center for Prevention and Treatment of Cardiovascular Diseases the Second Affiliated Hospital of Nanchang UniversityJiangxiChina Center of Cardiovascular Inner Mongolia People’s HospitalHohhotInner MongoliaChina

Background Uncertainty remains regarding the association between body mass index(BMI)and the risk of bleeding in patients with non-valvular atrial fibrillation(NVAF).We aimed to investigate the association between BMI and the risk of bleeding in elderly NVAF patients taking *** A total of 509 elderly NVAF patients,who were being treated at twelve centers in China from February 2015 to December 2017 and taking dabigatran,were *** exposure and outcome variables were BMI at baseline and bleeding events within the subsequent six months,*** proportional hazards regression analysis was used to evaluate the association between BMI and the risk of ***,the Cox proportional hazards regression with cubic spline functions and smooth curve fitting was *** During the six-month follow-up,50 participants experienced *** 1 kg/m^2 increase in BMI was associated with a 12%increased risk of bleeding(P=0.021).Compared to those with BMI values in Tertile 1(25.3 kg/m^2)were 2.71(95%CI:1.02–7.17)and 3.5(95%CI:1.21–8.70),*** Ptrend-value was significant in all *** adjusted smooth curve showed a linear association between BMI and *** of the stratified variables showed significant effect modification on the association between BMI and bleeding(Pinteraction>0.05).Conclusions BMI was significantly and positively associated with the risk of bleeding in elderly NVAF patients treated with dabigatran.

关键词： Atrial fibrillation Bleeding Body mass index Dabigatran

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Transcription factor OsWRKY72 is involved in Cu/Cd toxicity by regulating lignin synthesis in rice

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The Crop Journal 2024年第5期12卷 1471-1482页

作者： Xiangchao Shangguan Zhonghe Tian yu Wang Tengwei xiao xiaoyu yu Wen Jing Kejian Peng Zhenguo Shen Zhubing Hu Yan Xia College of Life Sciences Jiangsu Collaborative Innovation Center for Solid Organic Waste ResourceNanjing Agricultural UniversityNanjing 210095JiangsuChina State Key Laboratory of Crop Stress Adaptation and Improvement School of Life SciencesCollege of AgricultureHenan UniversityKaifeng 475004HenanChina Hunan Research Academy of Environmental Sciences Changsha 410128HunanChina

Maintenance of ion homeostasis in plant cells is an essential physiological requirement for sustainable growth,development,and yield of *** respond to high levels of heavy metals such as copper(Cu)and cadmium(Cd)to avoid irreversible damage at the structural,physiological and molecular *** previous study found that rice germin-like proteins(OsGLPs)are a type of Cu-responsive *** deletion of 10 tandem OsGLP genes on chromosome 8 led to more severe heavy metal toxicity in *** this study,we show that rice WRKY transcription factor OsWRKY72 negatively regulates *** of OsWRKY72 weakens the Cu/Cd tolerance of rice when exposed to Cu and ***72 suppressed expression of OsGLP8-7 and lignin synthesis genes,resulting in reduced lignin polymerization and consequently lower lignin accumulation in cell walls,thereby increasing the Cu and Cd *** addition,OsWRKY53 bound to OsWRKY72 to alleviate the transcriptional inhibition of *** results revealed that OsWRKY72-OsGLP8-7 is an important module response of rice to heavy metal stress,and that transcription factor OsWRKY72 acts upstream of OsGLP8-7 to regulate Cu/Cd toxicity.

关键词： Cadmium toxicity Copper toxicity Germin-like proteins Heavy metal stress Oryza sativa

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Molecular dynamics simulation of atomic hydrogen diffusion in strained amorphous silica

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Chinese Physics B 2020年第2期29卷 407-413页

作者： Fu-Jie Zhang Bao-Hua Zhou xiao Liu yu Song Xu Zuo College of Electronic Information and Optical Engineering Nankai UniversityTianjin 300071China Microsystem and Terahertz Research Center China Academy of Engineering PhysicsChengdu 610200China Institute of Electronic Engineering China Academy of Engineering PhysicsMianyang 621999China Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Tianjin 300350China

Understanding hydrogen diffusion in amorphous SiO2(a-SiO2),especially under strain,is of prominent importance for improving the reliability of semiconducting devices,such as metal-oxide-semiconductor field effect *** this work,the diffusion of hydrogen atom in a-SiO2 under strain is simulated by using molecular dynamics(MD)with the ReaxFF force field.A defect-free a-SiO2 atomic model,of which the local structure parameters accord well with the experimental results,is *** is applied by using the uniaxial tensile method,and the values of maximum strain,ultimate strength,and Young's modulus of the a-SiO2 model under different tensile rates are *** diffusion of hydrogen atom is simulated by MD with the ReaxFF,and its pathway is identified to be a series of hops among local energy ***,the calculated diffusivity and activation energy show their dependence on *** diffusivity is substantially enhanced by the tensile strain at a low temperature(below 500 K),but reduced at a high temperature(above 500 K).The activation energy decreases as strain *** research shows that the tensile strain can have an influence on hydrogen transportation in a-SiO2,which may be utilized to improve the reliability of semiconducting devices.

关键词： molecular dynamics tensile strain amorphous SiO2 hydrogen diffusion

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An effective connected dominating set based mobility management algorithm in MANETs

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第10期9卷 1318-1325页

作者： Xin-yu WANG xiao-hu YANG Jian-ling SUN Wei LI Wei SHI Shan-ping LI School of Computer Science and Technology Zhejiang University Hangzhou 310027 China

This paper proposes a connected dominating set (CDS) based mobility management algorithm, CMMA, to solve the problems of node entering, exiting and movement in mobile ad hoc networks (MANETs), which ensures the connectivity and efficiency of the CDS. Compared with Wu's algorithm, the proposed algorithm can make full use of present network conditions and involves fewer nodes. Also it has better performance with regard to the approximation factor, message complexity, and time complexity.

关键词： Mobile ad hoc network (MANET) Connected dominating set (CDS) Mobility Dominator No-key dominator Approximation factor

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Cavitation vortex dynamics of unsteady sheet/cloud cavitating flows with shock wave using different vortex identification methods

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Journal of Hydrodynamics 2019年第3期31卷 475-494页

作者： Chang-chang Wang Ying Liu Jie Chen Fu-yi Zhang Biao huang Guo-yu Wang School of Mechanical Engineering Beijing Institute of Technology Beijing 100081 China

Cavitation is a complex multiphase flow phenomenon with an abrupt transient phase change between the liquid and the vapor, including multiscale vortical motions. The transient cavitation dynamics is closely associated with the evolution of the cavitation vortex structures. The present paper investigates the cavitation vortex dynamics using different vortex identification methods, including the vorticity method, the Q criterion method, the Omega method (Ω), the method and the Rortex method. The Q criterion is an eigenvalue-based criterion, and in the Ω method, the parameter is normalized, is independent of the threshold value and in most conditions Ω= 0.52 . The Rortex method is based on an eigenvector-based criterion. Numerical simulations are conducted using the implemented compressible cavitation solver in the open source software OpenFOAM for the sheet/cloud cavitating flows around a NACA66 (mod) hydrofoil fixed at a = 6°,= 1.25 and Re = 7.96 × 10^5 . The flow is characterized by the alternate interactions of the re-entrant flow and the collapse induced shock wave. Results include the vapor structures and the vortex dynamics in the unsteady sheet/cloud cavitating flows, with emphasis on the vortex structures in thecavitation region, the cavity interface, the cavity closure, the cavity wakes, and the foil wakes with the shedding cavity. The comparisons of the various methods, including that the vorticity method, the Q criterion method, the Ω method, the λ2 method and the Rortex method, show the performances of different methods in identifying the cavitation vortex structures. Generally, during the attached cavity growth stage, the Q criteria can well predict the vortex structures in the cavitation region and at the foil trailing edge in the pure liquid region, while with the Ω method and the Rortex method, the vortex structures outside the attached cavity and on the foil pressure side can also be predicted. The λ2 method can well predict the vortex structures in t

关键词： Cavitation vortex dynamics vortex identification sheet/cloud cavitating flow re-entrant jet shock wave OpenFOAM

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Preparation and efficacy evaluation of Paenibacillus polymyxa KM2501-1 microbial organic fertilizer against root-knot nematodes

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Journal of Integrative Agriculture 2022年第2期21卷 542-551页

作者： CHENG Wan-li ZENG Li YANG Xue huang Dian yu Hao CHEN Wen CAI Min-min ZHENG Long-yu yu Zi-niu ZHANG Ji-bin State Key Laboratory of Agricultural Microbiology/National Engineering Research Center of Microbial Pesticides/College of Life Science and Technology Huazhong Agricultural UniversityWuhan 430070P.R.China

Root-knot nematodes(RKNs) cause huge yield losses to agricultural crops worldwide. Meanwhile, livestock manure is often improperly managed by farmers, which leads to serious environmental pollution. To resolve these two problems, this study developed a procedure for the conversion of chicken manure to organic fertilizer by larvae of Hermetia illucens L. and Bacillus subtilis BSF-CL. Chicken manure organic fertilizer was then mixed thoroughly with Paenibacillus polymyxa KM2501-1 to a final concentration of 1.5×10^(8)CFU g^(-1). The efficacy of KM2501-1 microbial organic fertilizer in controlling root-knot nematodes was evaluated in pot and field experiments. In pot experiments, applying KM2501-1 microbial organic fertilizer either as a base fertilizer or as a fumigant at the dose of 40 g/pot suppressed root-knot disease by 61.76 and 69.05% compared to the corresponding control treatments, respectively. When applied as a fumigant at the dose of 1 kg m;in field experiments, KM2501-1 microbial organic fertilizer enhanced the growth of tomato plants, suppressed root-knot disease by 49.97%, and reduced second stage juveniles of RKN in soil by 88.68%. KM2501-1 microbial organic fertilizer controlled RKNs better than commercial bio-organic fertilizer in both pot and field experiments. These results demonstrate that this co-conversion process efficiently transforms chicken manure into high value-added larvae biomass and KM2501-1 microbial organic fertilizer with potential application as a novel nematode control agent.

关键词： chicken manure Hermetia illucens L. microbial organic fertilizer root-knot nematode field experiment

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The identity of Dinochloa species and enumeration of Melocalamus(Poaceae:Bambusoideae) in China

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Plant Diversity 2023年第2期45卷 133-146页

作者： Jing-Xia Liu Zu-Chang Xu yu-xiao Zhang Meng-yuan Zhou De-Zhu Li Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China yunnan Academy of Biodiversity Southwest Forestry UniversityKunmingYunnan 650224China CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China

Three woody bamboo species collected in Hainan,China in 1940 have been described as Dinochloa based on vegetative ***,the identity of these species has long been in doubt,largely because the vegetative phase in species of Dinochloa is morphologically similar to that in species of Melocalamus,a climbing or scrambling bamboo genus of the paleotropical woody bamboos(Poaceae:Bambusoideae)that consists of about 15 species and one *** determine the phylogenetic affinity of the three Dinochloa species from Hainan,we sampled almost all recognized Chinese species of Melocalamus and representative species of Dinochloa as well as other closely related genera,performed molecular phylogenetic analysis,and compared their morphology based on herbarium and fieldwork *** ddRAD data indicate that the three species from Hainan are closely related to Melocalamus,not *** analysis showed that these three species have a climbing habit but do not grow spirally,their culm leaves have smooth bases,and there is a ring of powder and/or tomenta above and below the *** together our findings indicate that the three species from Hainan originally published in Dinochloa should be transferred to Melocalamus,i.e.,Melocalamus orenudus(McClure) ***& ***,Melocalamus puberulus(McClure) *** & ***,and Melocalamus utilis(McClure) *** &***,*** study concludes with an enumeration of Chinese species of Melocalamus,with a key to nine recognized species and one variety,and a lectotypification for M. compatiflorus.

关键词： ddRAD Melocalamus orenudus Melocalamus puberulus Melocalamus utilis New combinations Lectotypification

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