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Spatial distribution of Cd and Cu in soils in Shenyang Zhangshi Irrigation Area(SZIA),China

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2008年第3期9卷 271-278页

作者： li-na sun Xiao-bo YANG Wen-qing WANG li MA Su CHEN Key Laboratory of Eco-Remediation of Contaminated Environment and Resourcilization Technology Shenyang University Shenyang 110044 China liaoning Geology Academe Shenyang 110032 China

Heavy metal contamination of soils,derived from sewage irrigation,mining and inappropriate utilization of various agrochemicals and pesticides,and so on,has been of wide concern in the last several *** Shenyang Zhangshi Irrigation Area(SZIA) in China is a representative area of heavy metal contamination of soils resulting from sewage irrigation for about 30 *** study investigated the spatial distribution and temporal variation of soil cadmium(Cd) and copper(Cu) contamination in the *** soil samples were collected from the SZIA in 1990 and 2004;Cd and Cu in soils was analyzed and then the spatial distribution and temporal variation of Cd and Cu in soils were modeled using Kriging *** results show that long-term sewage irrigation had caused serious Cd and Cu contamination in *** mean and the maximum of soil Cd are markedly higher than the levels in second grade standard soil(LSGSS) in China,and the maximum of soil Cu is close to the LSGSS in China in 2004 and is more than the LSGSS in China in *** contamination magnitude of soil Cd and the soil extent of Cd contamination had evidently increased since sewage irrigation ceased in *** contamination magnitude of soil Cu and the soil extent of Cu contamination had evidently increased in topsoil,but obviously decresed in *** soil contamination of Cd and Cu was mainly related to Cd and Cu reactivation of contaminated sediments in Shenyang Xi River and the import of Cd and Cu during *** eluviation of Cd and Cu in contaminated topsoil with rainfall and irrigation water was another factor of temporal-spatial variability of Cd and Cu contamination in soils.

关键词： Cadmium (Cd) Copper (Cu) Contamination of soils Spatial distribution Shenyang Zhangshi Irrigation Area (SZLA)

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Changes in the peripapillary vasculature and macular thickness after cataract surgery using two phacoemulsification systems with optical coherence tomography angiography

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International Journal of Ophthalmology(English edition) 2022年第6期15卷 932-939页

作者： liang-Zhang Tan Fang Tian Lu Chen li-na sun Xue Gong Jing-li liang Hong Zhang Xiao-Rong li Tianjin Key Laboratory of Retinal Functions and Diseases Tianjin Branch of National Clinical Research Center for Ocular DiseaseEye Institute and School of OptometryTianjin Medical University Eye HospitalTianjin 300384China

AIM:To assess the changes in the peripapillary vasculature and macular thickness after cataract surgery using two phacoemulsification systems with optical coherence tomography angiography(OCTA).METHODS:Fifty-two eyes of 52 patients with agerelated cataract were randomized into two groups for phacoemulsification:Infiniti group(26 patients)using the Infiniti phacoemulsification system with gravity-fluidics and Centurion group(26 patients)using the Centurion phacoemulsification system with *** peripapillary vessel density(PVD)and macular thickness were examined using OCTA at baseline and at 1d,1 and 3mo after cataract ***:In the Infiniti group,the PVD was significantly reduced at 1d after the cataract surgery(Pnal nerve fiber layer(RNFL)thickness showed no significant change during the *** in PVD 1d postoperatively was significantly negatively correlated to the cumulative dissipated energy(CDE),estimated fluid usage(EFU),effective phacoemulsification time(EPT),intraocular pressure(IOP),and total operating time(TOT;P0.05).In the Centurion group,the VD and thickness in the optic papilla and macula did not significantly change in all regions during the follow-up(all P>0.05).The best-corrected visual acuity(BCVA)significantly improved in both groups postoperatively(Pnalysis of retinal vascular alterations,demonstrating a reduction of the PVD and an increase in the macular *** Centurion phacoemulsification system can provide better retinal vasculature preservation during cataract surgery.

关键词： cataract surgery phacoemulsification system retinal vasculature optical coherence tomography angiography

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The Modified Weak Galerkin Finite Element Method for Solving Brinkman Equations

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Journal of Mathematical Research with Applications 2019年第6期39卷 657-676页

作者： li-na sun Yue FENG Yuanyuan liU Ran ZHANG Department of Mathematics Jilin University Laboratory of Computational Physics Institute of Applied Physics and Computational Mathematics

A modified weak Galerkin(MWG) finite element method is introduced for the Brinkman equations in this paper. We approximate the model by the variational formulation based on two discrete weak gradient operators. In the MWG finite element method, discontinuous piecewise polynomials of degree k and k-1 are used to approximate the velocity u and the pressure p, respectively. The main idea of the MWG finite element method is to replace the boundary functions by the average of the interior functions. Therefore, the MWG finite element method has fewer degrees of freedom than the WG finite element method without loss of accuracy. The MWG finite element method satisfies the stability conditions for any polynomial with degree no more than k-1. The MWG finite element method is highly flexible by allowing the use of discontinuous functions on arbitrary polygons or polyhedra with certain shape *** order error estimates are established for the velocity and pressure approximations in H~1 and L~2 norms. Some numerical examples are presented to demonstrate the accuracy, convergence and stability of the method.

关键词： the Brinkman equations the modified weak Galerkin finite element method discrete weak gradient

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Association between sensitivity to thyroid hormones and non-highdensity lipoprotein cholesterol levels in patients with type 2 diabetes mellitus

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World Journal of Diabetes 2024年第10期15卷 2081-2092页

作者： Xiao-Ye Duan Jun-ling Fu li-na sun Zhi-Jing Mu Shuang-ling Xiu Department of Endocrinology Beijing Institute of GeriatricsXuanwu HospitalCapital Medical UniversityBeijing 100053China

BACKGROUND Dyslipidemia and type 2 diabetes mellitus(T2DM)are chronic conditions with substantial public health *** management of lipid metabolism in patients with T2DM is ***,there has been insufficient attention given to the relationship between thyroid hormone sensitivity and dyslipidemia in the T2DM population,particularly concerning non-high-density lipoprotein cholesterol(non-HDL-C).AIM To clarify the association between thyroid hormone sensitivity and dyslipidemia in patients with *** In this cross-sectional study,thyroid hormone sensitivity indices,the thyroid feedback quantile-based index(TFQI),the thyroid-stimulating hormone index(TSHI),the thyrotrophic T4 resistance index(TT4RI),and the free triiodothyronine(FT3)/free thyroxine(FT4)ratio were *** regression analysis was performed to determine the associations between those composite indices and non-HDL-C *** forest variable importance and Shapley Additive Explanations(SHAP)summary plots were used to identify the strength and direction of the association between hyper-non-HDL-C and its major *** Among the 994 participants,389(39.13%)had high non-HDL-C *** regression analysis revealed that the risk of hyper-non-HDL-C was positively correlated with the TFQI(OR:1.584;95%CI:1.088-2.304;P=0.016),TSHI(OR:1.238;95%CI:1.034-1.482;P=0.02),and TT4RI(OR:1.075;95%CI:1.006-1.149;P=0.032)but was not significantly correlated with the FT3/FT4 *** relationships between composite indices of the thyroid system and non-HDL-C levels differed according to *** increased risk of hyper-non-HDL-C was associated with elevated TSHI levels in men(OR:1.331;95%CI:1.003-1.766;P=0.048)but elevated TFQI levels in women(OR:2.337;95%CI:1.4-3.901;P=0.001).Among the analyzed variables,the average SHAP values were highest for TSHI,followed by *** Impaired sensitivity to thyroid hormones was associated with high non-HDL-C levels in

关键词： Non-high-density lipoprotein cholesterol Sensitivity to thyroid hormones Type 2 diabetes mellitus Thyroid feedback quantile-based index Free triiodothyronine/free thyroxine ratio

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Magnolol attenuates sepsis-induced gastrointestinal dysmotility in rats by modulating inflammatory mediators

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World Journal of Gastroenterology 2008年第48期14卷 7353-7360页

作者： Tie-Cheng Yang Shu-Wen Zhang li-na sun Hong Wang Ai-Min Ren Intensive Care Unit and Medical Department of Infection Beijing Friendship Hospital Capital Medical University Beijing 100050 China Department of Pharmacology School of Chemical Biology and Pharmaceutical Sciences Capital Medical University Beijing 100069 China

AIM： To investigate the protective effects of magnolol on sepsis-induced inflammation and intestinal dysmotility. METHODS： Sepsis was induced by a single intraperitoneal injection of lipopolysaccharide （LPS）. Male Wistar rats were randomly assigned to one of three treatment groups： magnolol prior to LPS injection （LPS/Mag group）; vehicle prior to LPS injection （LPS/Veh group）; vehicle prior to injection of saline （Control/Veh）. Intestinal transit and circular muscle mechanical activity were assessed 12 h after LPS injection. Tumor necrosis factor-α （TNF-α）, interleukin-10 （IL-10）, monocyte chemoattractant protein-1 （MCP-1） and inducible nitric oxide synthase （iNOS） mRna in rat ileum were studied by RT-PCR 2 h after LPS injection. Nuclear factor-κB （NF-κB） activity in the intestine was also investigated at this time using electrophoretic mobility shift assay. In addition, antioxidant activity was determined by measuring malondialdehyde （MDA） concentration and superoxide dismutase （SOD） activity in the intestine 2 h after LPS ***： Magnolol significantly increased intestinal transit and circular muscle mechanical activity in LPS- treated animals. TNF-α, MCP-1 and iNOS mRna expression in the small intestine were significantly reduced after magnolol treatment in LPS-induced septic animals, compared with untreated septic animals. Additionally,magnolol significantly increased IL-10 mRna expression in septic rat ileum. Magnolol also significantly suppressed NF-κB activity in septic rat intestine. In addition, magnolol significantly decreased MDA concentration and increased SOD activity in rat ileum. CONCLUSION： Magnolol prevents sepsis-induced suppression of intestinal motility in rats. The potential mechanism of this benefit of magnolol appears to be modulation of self-amplified inflammatory events and block of oxidative stress in the intestine.

关键词： Sepsis Motility Cytokines Magnolol lipopolysaccharide

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Contribution of Atmospheric Nitrogen Compounds to N Deposition in a Broadleaf Forest of Southern China

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Pedosphere 2007年第3期17卷 360-365页

作者： HU Zheng-Yi XU Cheng-Kai ZHOU li-na sun Ben-Hua HE Yuan-Qiu ZHOU Jing CAO Zhi-Hong State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of SciencesNanjing 210008 （China） College of Forest Resources and Environment Nanjing Forestry University Nanjing 210007 （China） College of Resources and Environment Northwest Sci-Tech University of Agriculture and Forestry Yangling 712100（China）

A one-year study in a typical red soil region of southern China was conducted to determine atmospheric nitrogen (N) fluxes of typical N compounds (NH3, NH4-N, NO3-N, and NO2) and contribution of three sources (gas, rainwater, and particles) to N deposition. From July 2003 to June 2004, the total atmospheric N deposition was 70.7 kg N ha-1, with dry deposition accounting for 75% of the total deposition. Dry NH3 deposition accounted for 73% of the dry deposition and 55% of the total deposition. Moreover, NO2 contributed 11% of the dry deposition and 8% of the total deposition. Reduced N compounds (NH4+ and NH3) were the predominate contributors, accounting for 66% of the total deposition. Therefore, atmospheric N deposition should be considered when soil acidification and critical loads of atmospheric deposition on soils are estimated.

关键词： atmospheric deposition broadleaf forest nitrogen red soil soil acidification

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Health Risk Assessment on Heavy Metal Pollution in the Water Environment of Benxi Reach of Taizihe River

Health Risk Assessment on Heavy Metal Pollution in the Water...

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International Conference on Environmental Pollution and Public Health(EPPH 2012) Vol1

作者： Hui Wang li-na sun Zheng Zhang Min Shi Institute of Applied Ecology Chinese Academy of Sciences Graduate School of the Chinese Academy of Sciences Shenyang University Laboratory of Eco-Remediation and Resource Reuse liaoning Environment Monitoring Center

The objective of this research was to study the status of heavy metal pollution and the health risk of heavy metal in Benxi reach of Taizihe river. Results showed that the major carcinogenic heavy metal was Cr and As, and there were five monitoring stations where the health risk exceeded over the standard of ICRP. The health risk in Qinjingou and New Xihugou monitoring stations were bigger than other monitoring stations. This research would significantly improve the understanding of the status of heavy metal pollution and enhance the attention to health risk of heavy metal in water environment.

关键词： Health Risk Assessment Heavy metal pollution Benxi Reach Taizihe River

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Two-Qubit Geometric Gates Based on Ground-State Blockade of Rydberg Atoms

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Chinese Physics Letters 2022年第9期39卷 1-5页

作者： Ji-Ze Xu li-na sun J-F.Wei Y-L.Du Ronghui Luo Lei-Lei Yan M.Feng Shi-Lei Su School of Physics Zhengzhou UniversityZhengzhou 450001China State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and MathematicsInnovation Academy of Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan 430071China Department of Physics Zhejiang Normal UniversityJinhua 321004China Research Center for Quantum Precision Measurement Guangzhou Institute of Industry TechnologyGuangzhou 511458China

We achieve the robust nonadiabatic holonomic two-qubit controlled gate in one step based on the groundstate blockade mechanism between two Rydberg atoms. By using the Rydberg-blockade effect and the Raman transition mechanism, we can produce the blockade effect of double occupation of the corresponding ground state,i.e., ground-state blockade, to encode the computational subspace into the ground state, thus effectively avoiding the spontaneous emission of the excited Rydberg state. On the other hand, the feature of geometric quantum computation independent of the evolutionary details makes the scheme robust to control errors. In this way,the controlled quantum gate constructed by our scheme not only greatly reduces the gate infidelity caused by spontaneous emission but is also robust to control errors.

关键词： state Rydberg quantum

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FFA与OCT检查在葡萄膜炎诊疗中的价值

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国际眼科杂志 2017年第8期17卷 1572-1575页

作者：孙利娜郑州爱尔眼科医院中国河南省郑州市450000

目的:研究眼底荧光血管造影(FFA)和光学相干断层扫描(OCT)检查在葡萄膜炎诊疗中的临床影像学价值。方法:选取2014-04/2016-04在本院接受治疗的葡萄膜炎患者共140例244眼,其中双眼发病患者104例208眼,单眼发病患者36例36眼,患者均经过病... 详细信息

目的:研究眼底荧光血管造影(FFA)和光学相干断层扫描(OCT)检查在葡萄膜炎诊疗中的临床影像学价值。方法:选取2014-04/2016-04在本院接受治疗的葡萄膜炎患者共140例244眼,其中双眼发病患者104例208眼,单眼发病患者36例36眼,患者均经过病史询问、裂隙灯、检眼镜、眼B超等检查确诊是葡萄膜炎。依据葡萄膜炎的解剖部位分成:前葡萄膜炎患者72例132眼,中间葡萄膜炎患者24例48眼,后葡萄膜炎患者28例40眼,全葡萄膜炎患者16例24眼。对以上患者行FFA与OCT检查,评估患者眼底的病变情况。结果:前葡萄膜炎的检出率为46.2%,中间葡萄膜炎的检出率为43.8%,后葡萄膜炎的检出率为45.0%,全葡萄膜炎的检出率为54.2%,前葡萄膜炎患者出现的眼底炎症性病变多位于眼底周边部,后葡萄膜炎和全葡萄膜炎患者的眼底炎症主要位于后极部位。结论:FFA客观反映了葡萄膜炎对视网膜产生的影响,帮助了解患者脉络膜、视神经和视网膜的病变程度,从而使用合适的方法进行治疗;OCT则为患者提供了客观、直接的评价手段。

关键词：荧光血管造影葡萄膜炎眼底炎症

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内质网应激在酒精性肝病细胞凋亡中的作用

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世界华人消化杂志 2010年第1期18卷 70-74页

作者：孙丽娜周俊英河北医科大学第三医院儿科河北省石家庄市050051 河北医科大学第三医院感染科河北省石家庄市050051

内质网应激是内质网生理功能发生紊乱的一种亚细胞器的病理状态,既是机体的一种自我保护机制,也是促进细胞凋亡的一条重要途径.在酒精性肝病中,可通过高同型半胱氨酸血症等的作用诱导内质网应激,并可导致肝细胞凋亡.本文就内质网应激在... 详细信息

内质网应激是内质网生理功能发生紊乱的一种亚细胞器的病理状态,既是机体的一种自我保护机制,也是促进细胞凋亡的一条重要途径.在酒精性肝病中,可通过高同型半胱氨酸血症等的作用诱导内质网应激,并可导致肝细胞凋亡.本文就内质网应激在酒精性肝病细胞凋亡中的作用作一综述.

关键词：内质网应激酒精性肝病肝细胞凋亡

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