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MULTIPLE SOLUTIONS OF SOME ELLIPTIC SYSTEMS WITH LINEAR COUPLINGS

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Acta Mathematica Scientia 2021年第4期41卷 1141-1150页

作者： Yutong CHEN Jiabao su Mingzheng suN Rushun TTAN School of Mathematical Sciences Capital Normal UniversityBeijing 100048China College of Sciences North China University of TechnologyBeijing 100144China

In this paper,we study the existence of nontrivial solutions to the elliptic system {-△u=λv+Fu(x,u,v),x∈Ω,-△v=λu+Fv(x,u,v),x∈Ω,u=v=0,x∈∂Ω,where Ω■R^(N) is bounded with a smooth *** the Morse theory and the... 详细信息

关键词： Morse theory multiplicity elliptic system linear couplings

Discussion on the Mechanism of Boric Acid and Phosphoric Acid to Improve the Hardening of Complex Calcium Lubricating Grease

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China Petroleum Processing & Petrochemical Technology 2019年第4期21卷 112-118页

作者： Zheng Hui sun Hongwei He Yifeng su Shuo Zhuang Minyang Liu Xinyang SINOPEC Research Institute of Petroleum Processing

In order to solve the hardening problem of complex calcium lubricating grease, the water absorption test of several calcium salts was carried out, and it was found that calcium 12-hydroxystearate did not absorb water, and calcium acetate, calcium phosphate and calcium borate had different degrees of water absorption. Calcium acetate has the highest water absorption rate, while calcium phosphate and calcium borate show comparable water absorption rates. Upon using the molecular simulation technology, it is found that in the complex calcium grease system, calcium phosphate and calcium borate tend to combine with water, which inhibits the water absorption of calcium acetate and alleviate the hardening problem.

关键词： lubricating grease complex calcium hardening

The prediction method for folding boundaries of Escherichia coli chromosome based on multi-source information 36

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The prediction method for folding boundaries of Escherichia ...

Energy as Entanglement Witness in Bilinear-Biquadratic Spin-1 Chain

第36届中国控制会议

作者： Xin su Bo Zhao Yi Gong Han Zhang College of Computer and Control Engineering Nankai University Tianjin Key Laboratory of Intelligent Robotics Nankai University

ISBN: (纸本)9781538629185

The circular Escherichia coli chromosome has been suggested to form a partition of the genome where it folds into a collection of sequentially consecutive *** paper presents a prediction method to give the location of the folding *** genes involved in one domain tend to be co-expressed,the information of activation and co-expression level is extracted from multi-source data *** activation level of genes is described by frequencies of attending the pathways in different database,while Intensity Co-expression is defined for co-expression *** two types of data are processed by wavelet analysis and are used to improve the optimization model for *** objective function of this model is to minimize both the total number of unfoldings of these domains in the chromosome and total frequencies of folding *** multi-source information is also designed for the experimental *** experiment results show the good effect of the prediction method in Computational Biology.

关键词： Folding boundaries Multi-source information Wavelet transform Dynamic programming Gene co-expression

来源： cnki会议评论

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Communications in Theoretical Physics 2006年第4X期46卷 591-594页

作者： XU Feng WANG An-Min ZHAO Ning-Bo su Xiao-Qiang ZHU Ren-Gui Department of Modern Physics University of Science and Technology of China Hefei 230026 China

Energy is introduced as an entanglement witness to describe the entanglement property of a quantum system. The thermal equilibrium system is guaranteed to be entangled when system is cooled down below the entanglement temperature TE. By virtue of this concept we exploit the minimum separable state energy and entanglement temperature TE of the bilinear-biquadratic antiferromagnetic spin-1 chain model. We numerically calculate TE for arbitrary values of the strength of biquadratic exchange interaction Q up to N=7. We find TE decreases with Q for fixed N when Q is between -3 and 1/3 （J = 1）. In this regime TE also decreases with N for fixed Q and varies slowly for large N. While the thermal system is always entangled when Q is smaller than -3.

关键词： entanglement witness

Highly Stable sp^(2) Carbon-Conjugated Porous Organic Cages

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CCS Chemistry 2024年第1期6卷 149-156页

作者： Fenglei Qiu Xun Chen Wenjing Wang Kongzhao su Daqiang Yuan State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002 College of Chemistry Fuzhou UniversityFuzhouFujian 350116 University of the Chinese Academy of Sciences Beijing 100049

The high-yield synthesis of ultrastable porous organic cages(POCs)by facile methods is highly desirable but *** by highly stable sp^(2) carbon-conjugated(C=C)covalent organic frameworks,we used rational design and synthesized the first family of sp^(2) carbon-linked POCs(sp^(2)c-POCs)with triangular prism shapes by a one-step Knoevenagel reaction that is a high yield[2+3]condensation *** stability of sp^(2)c-POC was demonstrated under strenuous conditions involving for example concentrated HCl or saturated NaOH ***^(2)c-POC was used as a robust adsorbent for efficient separation of CO_(2)/CH_(4) or CO_(2)/N_(2) *** view of their facile synthesis and unique properties,we expect widespread use of these sp^(2) C=C linkages in the development of POC materials.

关键词： porous organic cages Knoevenagel condensation sp^(2)C=C linkage exceptional chemical stability gas adsorption and separation properties

Effects of n-3 polyunsaturated fatty acids from seal oils on nonalcoholic fatty liver disease associated with hyperlipidemia

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World Journal of Gastroenterology 2008年第41期14卷 6395-6400页

作者： Feng-Shang Zhu su Liu Xi-Mei Chen Zhi-Gang Huang Dong-Wei Zhang Digestive Disease Institute of Tongji University Shanghai 200065 China Department of Gastroenterology Center Hospital of Shanghai Zhabei District Shanghai 200072 China

AIM: To investigate the efficacy and safety of n-3 polyunsaturated fatty acids (PUFA) from seal oils for patients with nonalcoholic fatty liver disease (NAFLD) associated with hyperlipidemia. METHODS: One hundred and forty-four patients with NAFLD associated with hyperlipidemia were included in the 24-wk, randomized, controlled trial. The patients were randomized into two groups. Group A (n = 72) received recommended diet and 2 g n-3 PUFA from seal oils, three times a day. Group B (n = 72) received recommended diet and 2 g placebo, three times a day. Primary endpoints were fatty liver assessed by symptom scores, liver alanine aminotransferase (ALT) and serum lipid levels after 8, 12, 16, and 24 wk. Hepatic fat inf iltration was detected by ultrasonography at weeks 12 and 24 after treatment. REsuLTS: A total of 134 patients (66 in group A, 68 in group B) were included in the study except for 10 patients who were excluded from the study. After 24 wk of treatment, no change was observed in body weight, fasting blood glucose (FBG), renal function and blood cells of these patients. Total symptom scores, ALT and triglyceride (TG) levels decreased more significantly in group A than in group B (P < 0.05). As expected, there was a tendency toward improvement in aspartate aminotransferase (AST), γ-glutamyltranspeptidase (GGT), and total cholesterol (TCHO) and high- density lipoprotein (HDL) cholesterol levels (P < 0.05) after administration in the two groups. However, no significant differences were found between the two groups. The values of low-density lipoprotein (LDL) were significantly improved in group A (P < 0.05), but no significant change was found in group B at different time points and after a 24-wk treatment. After treatment, complete fatty liver regression was observed in 19.70% (13/66) of the patients, and an overall reduction was found in 53.03% (35/66) of the patients in group A. In contrast, in group B, only f ive patients (7.35%, 5/68) achieved complete fatt

关键词： Nonalcoholic fatty liver disease Polyunsaturated fatty acids Seal oil Hyperlipidemia, Therapy

land Use Change and Anthropogenic Driving Forces:A Case Study in Yanhe River Basin

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Chinese Geographical Science 2011年第5期21卷 587-599页

作者： su Changhong FU Bojie LU Yihe LU Nan ZENG Yuan HE Anna Halina LAMPARSKI State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China Institute of Remote Sensing Applications Chinese Academy of Sciences Beijing 100101 China ENV Australia Pry Ltd 113 Hamersley Road Subiaco Perth 6008 Australia

Human activities alter land use patterns and affect landscape sustainability. It is therefore very important to investigate the relationship between land use change and human activities. This study focuses on the detection of changing land use patterns in the Yanhe River Basin in northern Loess Plateau of China between 1995 and 2008. landscape metrics were used to analyze the changing land use patterns and to explore the related anthropogenic driving forces. Results show that:1) Totally, 186 590 ha of croplands were converted into alternate land-use types (equivalent to 61.7% of the original cropland area). The majority of cropland areas were found to be converted into grassland and woodland areas (accounting for 55.9% and 4.9% respectively of the original cropland areas). 2) Both cropland and woodland demonstrated an increasing fragmentation tendency while grasslands showed a decreasing fragmentation tendency. 3) Multiple driving forces of land use change were thought to act together to changes in landscape metrics in the Yanhe River Basin. The anthropogenic driving forces were analyzed from four perspectives:ecological conservation policy, labor force transfer, industrial development, and rural settlement. The policy of the GfG (Grain for Green) project was the main driving factor which expedited the conversion from cropland to woodland and grassland. Industrial development was also found to affect land use change through the direct impact of economic activities such as oil exploration and agricultural production, or through indirect impacts such as the industrial structures readjustment. Labor force transfer from rural to urban areas was found to follow the industrial structure readjustment and further drove land use change from cropland to off-farm land use. Establishment of new tile-roofed houses instead of cave-type dwellings in rural settlements has helped to aggregate the original scattered land-use type of construction.

关键词： land use landscape metrics anthropogenic driving force Grain for Green (GfG) policy Yanhe River Basin

Comparison of clinical efficacy and postoperative inflammatory response between laparoscopic and open radical resection of colorectal cancer

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World Journal of Clinical Cases 2022年第13期10卷 4042-4049页

作者： Long-Hai He Bo Yang Xiao-Qin su Yue Zhou Zhen Zhang Department of General surgery The First People’s Hospital of Wanzhou DistrictChongqing 404040China Department of Clinical Nutrition The First People’s Hospital of Wanzhou DistrictChongqing 404040China

BACKGROUND In recent years,the incidence of colorectal cancer(CRC)has increased annually,which has seriously threatened the health and quality of life of *** the treatment of CRC,both laparoscopic and radical resection are widely *** To explore and discuss clinical efficacy and postoperative inflammatory response of laparoscopic and open radical resection of *** A total of 96 patients with CRC diagnosed in our hospital from March 2016 to April 2021 were selected,and were divided into the study group(n=48)and control group(n=48)using a simple random *** control group was treated with open radical resection of CRC,and the study group was treated with laparoscopic radical resection of *** perioperative conditions(operation time,intraoperative blood loss,the recovery time of gastrointestinal function,number of lymph node dissections and length of hospital stay),inflammatory response index levels[interleukin(IL)-6,IL-8,IL-10,C-reactive protein(CRP)]before and after operation,pain stress response indices[levels of neuropeptide(NPY),prostaglandin E2(PGE2),5-hydroxytryptamine(5-HT)],and the incidence of the complications between the two groups were *** The operation time in the study group was(186.18±33.54 min),which was longer than that of the control group(129.38±26.83 min),but the intraoperative blood loss(111.34±21.45 mL),recovery time of gastrointestinal function(25.35±4.55 h),and hospital stay(10.09±2.38 d)were better than those in the control group(163.77±32.41 mL,36.06±7.13 h,13.51±3.66 d)(P0.05).There was no significant difference between the levels of serum IL-6(9.79±4.11 ng/mL),IL-8(3.79±1.71 ng/L),IL-10(48.96±12.51 ng/L)and CRP(7.98±2.33 mg/L)in the study group and the control group(10.56±3.78 ng/mL,4.08±1.45 ng/L,50.13±11.67 ng/L,8.29±2.60 mg/L)before the operation(P

关键词： Laparoscope Open surgery Colorectal cancer Inflammatory response Pain stress response

三七总皂苷注射液与复方丹参注射液治疗冠心病心绞痛的比较

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中国新药与临床杂志 2000年第6期19卷 458-460页

作者：陈际苏赵兰坤苏卫东曹县中医院山东曹县274400

目的 :观察比较三七总皂苷与复方丹参注射液对冠心痛心绞痛的疗效。方法 :治疗组 65例(男性 4 4例 ,女性 2 1例 ;年龄 62a±s 9a)以三七总皂苷注射液 4mL ;对照组 50例 (男性 34例 ,女性16例 ;年龄 60a± 7a)以复方丹参注射液 2 0mL ;2... 详细信息

目的 :观察比较三七总皂苷与复方丹参注射液对冠心痛心绞痛的疗效。方法 :治疗组 65例(男性 4 4例 ,女性 2 1例 ;年龄 62a±s 9a)以三七总皂苷注射液 4mL ;对照组 50例 (男性 34例 ,女性16例 ;年龄 60a± 7a)以复方丹参注射液 2 0mL ;2组药物均加入 10 %葡萄糖注射液 50 0mL中静脉滴注 ,qd× 2 0d。结果 :治疗组临床总有效率、心电图总有效率及降血脂总有效率依次为 83% ,82 %及62 % ;对照组依次为 68% ,62 %及 35% ;2组组间比较 ,差别均有显著意义 (P <0 .0 5)。三七总皂苷且有降低血液流变学各参数的作用 ,2组均未发现显著不良反应。结论 :三七总皂苷治疗冠心病心绞痛疗效优于复方丹参。

关键词：冠心病心绞痛三七总皂苷复方丹参注射液治疗