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Adsorption and desorption of steroid hormones on saline soil

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Frontiers of Environmental Science & Engineering 2022年第11期16卷 177-190页

作者： Jie wu Jian lu Jun wu CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation Yantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai 264003China Shandong Key Laboratory of Coastal Environmental Processes Yantai 264003China University of Chinese Academy of Sciences Beijing 100049China Yantai Research Institute Harbin Engineering UniversityYantai 264006China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

Soil organic matter content was the main driving factor affecting adsorption and desorption process of 17β-estradiol(E2)and 17α-ethynylestradiol(EE2)on saline *** adsorption and desorption of E2 and EE2 on three saline soils showed the similar behavior that soil with the highest organic content possessed the highest adsorption capacity and the lowest desorption capacity for E2 and *** adsorption capacity of untreated soil samples(with organic matter)was larger than that of soil samples without organic *** soil with the largest adsorption capacity,adsorption capacity of E2/EE2 on the untreated soil and soil colloid(with organic matter)respectively reached 0.15/0.30μg/g and 0.16/0.33μg/g while the soil and soil colloid without organic matter hardly adsorbed *** adsorption capacity of E2/EE2 at the initial concentration of 100μg/L was 25/15 times higher than that at the initial concentration of 5μg/L.E2 and EE2 had the same adsorption sites on saline soil while EE2 possessed higher competition intensity for adsorption sites than ***-first-order model(R^(2)=0.995–0.986)and Langmuir model(R^(2)=0.989–0.999)could better fit the adsorption process of E2 or *** thermodynamic study further showed that the adsorption of E2/EE2 on saline soil was a spontaneous exothermic *** desorption capacity of EE2/E2 accounted for 40%/78%of the total adsorption capacity to possibly exert potential risk to the *** variation of the salinity led to the variation of soil organic carbon which subsequently changed the adsorption and desorption behaviors of endocrine disrupting chemicals in coastal saline *** study provides a new insight on the interfacial behavior of endocrine disrupting chemicals on saline soil.

关键词： Saline soil Steroid hormones Adsorption Desorption Soil organic matter

Effect of gastric fluid on adsorption and desorption of endocrine disrupting chemicals on microplastics

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Frontiers of Environmental Science & Engineering 2022年第8期16卷 193-205页

作者： Jie wu Jian lu Jun wu CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation Yantai Institute of Coastal Zone Research(YIC)Chinese Academy of Sciences(CAS)Shandong Key Laboratory of Coastal Environmental ProcessesYICCASYantai 264003China University of Chinese Academy of Sciences Beijing 100049China Yantai Research Institute Harbin Engineering UniversityYantai 264006China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

Microplastics and endocrine disrupting chemicals are emerging pollutants in the marine environment because of their potential *** effect of gastric fluid on the adsorption and desorption of 17β-estradiol(E2)and 17α-ethynylestradiol(EE2)to microplastics was *** adsorption and desorption isotherms of E2/EE2 on microplastics could be well fitted by the Freundlich model while the Gibbs free energy of these processes were negative,proving that the reaction occurred spontaneously on the heterogeneous surface of the *** ratios of EE2(55%–59%)on PVC were larger than that of E2(49%–55%)to indicate that EE2 was less stable in gastric fluid,which could be explained by the fact that the hydrophobicity of EE2 was greater than E2.E2/EE2 were more easily desorbed from PVC in the gastric fluid and the desorption amount(5.25–12.91/7.19–17.86μg/g)increased by 2.51 times in comparison with that in saline solution(2.22–7.81/2.87–10.80μg/g).The decrease of pH and the increase of ionic strength in gastric fluid could further strengthen desorption of E2/EE2 from *** promotion of gastric juice on desorption of PVC was achieved by reducing the hydrophobicity of the PVC *** desorption rate of E2/EE2 at 18°C and 38°C was respectively 44%–47%/46%–50%and 49%–55%/56%–59%,indicating that PVC loaded with E2/EE2 had a relatively greater risk of releasing pollutants in the gastric fluid of constant temperature marine organisms while higher temperatures exposed higher hazards for variable temperature *** interaction between microplastics and pollutants might be mainly hydrophobic interaction.

关键词： Microplastics Gastric fluid Endocrine-disrupting chemicals Adsorption Desorption

B7-H1 expression is associated with expansion of regulatory T cells in colorectal carcinoma

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World Journal of Gastroenterology 2012年第9期18卷 971-978页

作者： Dong Hua Jing Sun Yong Mao lu-Jun Chen Yu-Yu wu Xue-guang Zhang Department of Oncology the FourthAffiliated Hospital of Suzhou University Wuxi 214062 JiangsuProvince China Institute of MedicalBiotechnology Soochow University Suzhou 215007 Jiangsu Pro-vince China Clinical central Laboratory The Third AffiliatedHospital of Soochow University Changzhou 213003 JiangsuProvince China Department of Pathology The Fourth Affiliated Hos-pital of Soochow University Wuxi 214062 Jiangsu ProvinceChina

AIM： To investigate the expression of B7-H1 in human colorectal carcinoma （CRC） to define its regulating ef- fects on T cells in tumor microenvironment.

关键词： Costimulatory molecule B7-H1 PD-1 Regu-latory T cell Colorectal carcinoma

Prime in Quadratic Progressions on Average

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Acta Mathematica Sinica,English Series 2011年第6期27卷 1187-1194页

作者： guang Shi lu Hai Wei SUN Department of Mathematics Shandong University Ji'nan 250100 P. R. China

In this paper we study the distribution of primes in quadratic progressions on average. Our result improves a previous result of Baier and Zhao in some aspects.

关键词： Primes quadratic progressions circle method

GPU-based cross-platform Monte Carlo proton dose calculation engine in the framework of Taichi

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Nuclear Science and Techniques 2023年第5期34卷 152-162页

作者： Wei-guang Li Cheng Chang Yao Qin Zi-lu Wang Kai-Wen Li Li-Sheng Geng Hao wu School of Physics Beihang UniversityBeijing 102206China Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education/Beijing) Department of Radiation OncologyPeking University Cancer Hospital and Institute52 Fucheng RoadBeijing 100142China Medical Management Department CAS Ion Medical Technology Co.Ltd.Beijing 100190China Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang UniversityBeijing 102206China School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China Institute of Medical Technology Peking University Health Science Center38 Xueyuan RoadBeijing 100191China

In recent years,graphics processing units(GPUs)have been applied to accelerate Monte Carlo(MC)simulations for proton dose calculation in ***,current GPU platforms,such as Compute Unified Device Architecture(CUDA)and Open Computing Language(OpenCL),suffer from cross-platform limitation or relatively high programming ***,the Taichi toolkit,which was developed to overcome these difficulties,has been successfully applied to high-performance numerical *** on the class II condensed history simulation scheme with various proton-nucleus interactions,we developed a GPU-accelerated MC engine for proton transport using the Taichi *** distributions in homogeneous and heterogeneous geometries were calculated for 110,160,and 200 MeV protons and were compared with those obtained by full MC simulations using *** gamma passing rates were greater than 0.99 and 0.95 with criteria of 2 mm,2%and 1 mm,1%,respectively,in all the benchmark ***,the calculation speed was at least 5800 times faster than that of TOPAS,and the number of lines of code was approximately 10 times less than those of CUDA or *** study provides a highly accurate,efficient,and easy-to-use proton dose calculation engine for fast prototyping,beamlet calculation,and education purposes.

关键词： Proton therapy Monte Carlo dose calculation GPU acceleration Taichi

Difference in Organic Carbon Contents and Distributions in Particle-size Fractions between Soil and Sediment on the Southern Loess Plateau, China

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Journal of Mountain Science 2014年第3期11卷 717-726页

作者： LI guang-lu PANG Xiao-ming College of Resources and Environment Northwest A&F University Tianshui Soil and Water Conservation Experiment Station of YRCC

The purpose of this study was to assess the effect of long-term cultivation and water erosion on the soil organic carbon （OC） in particle-size fractions. The study site is located at Nihegou Watershed in the Southern Loess Plateau, China. The soil at this site is loess with loose and silty structure, and contains macropores. The results showed that the OC concentrations in sediments and in the particle-size fractions of sediments were higher than those in soils and in the particle-size fractions of soils. The OC concentration was highest in the clay particles and was lowest in the sand particles. Clay particles possessed higher OC enrichment ability than silt and sand particles. The proportions of OC in the silt fractions of soil and sediment were the highest （mean value of 53.87% and 58.48%, respectively）, and the total proportion of OC in the clay and silt fractions accounted for 96% and 98% of the total OC in the soil and sediment, respectively. The loss of OC was highest in silt particles, with an average value of 0.16 Mg ha^-1 y^-1, and was lowest in the sand （0.003 Mg ha^-1 y^-l）. This result suggests that the fine particle-size fraction in the removed sediment may be an important indicator to assess soil OC losses.

关键词： Soil organic carbon Loess Plateau Enrichment ratio Water erosion Particle fraction

Motor Imagery EEG Fuzzy Fusion of Multiple Classification

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Journal of Electronic Science and Technology 2017年第1期15卷 58-63页

作者： lu-Qiang Xu guang-Can Xiao School of Computer South West University of Science and TechnologyMianyang 621010China

Due to the volume conduction,electroencephalogram（EEG） gives a rather blurred image of brain activities. It is a challenge for generating satisfactory performance with EEG. This paper studies the multiple areas fusion of EEG classifiers to improve the motor imagery EEG classification performance. Two feature extraction methods are employed to extract the feature from three different areas of EEG. One is power spectral density（PSD）, and the other is common spatial patterns（CSP）. Classifiers are designed based on the well-known linear discrimination analysis（LDA）. The fusion of the individual classifiers is realized by means of the Choquet fuzzy integral. It is demonstrated that the proposed method comes with better performance compared with the individual classifier.

关键词： classifier discrimination satisfactory imagery conduction generating challenge processed projection spatially

On Sums of a Prime and Four Prime Squares in Short Intervals

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Acta Mathematica Sinica,English Series 2008年第8期24卷 1291-1302页

作者： guang Shi lu Xian Meng MENG Department of Mathematics Shandong University Ji'nan 250100 P. R. China Department of Statistics and Mathematics Shandong Finance Institute Ji'nan 250014 P. R. China

In this paper, we prove that each sufficiently large integer N ≠1（mod 3） can be written as N=p＋p1^2＋p2^2＋p3^2＋p4^2, with｜p-N/5｜≤U,｜pj-√N/5｜≤U,j=1,2,3,4,where U=N^2/20＋c and p,pj are primes.

关键词： exponential sums over primes circle method prime

Locally-primitive Arc-transitive lO-Valent Graphs of Square-free Order

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Algebra Colloquium 2018年第2期25卷 243-264页

作者： guang Li Zaiping lu Xiaoyuan Zhang Center for Combinatorics LPMC-TJKLC Nankai University Tianjin 300071 China

In this paper, we present a complete classification for locally-primitive arctransitive graphs which have square-free order and valency 10. The classification involves nine graphs and three infinite families of graphs.

关键词： arc-transitive graph locally-primitive graph normal quotient vertexstabilizer (almost) simple group