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Nume.ical simulation of heat release performance of filling body under condition of heat extracted by fluid flowing in buried tube

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Journal of Central South University 2019年第8期26卷 2160-2174页

作者： ZHANG xiao-yan LIU Li LIU Lang LIU lu JIA Yu-hang College of Energy Science and Engineering Xi’an University of Science and TechnologyXi’an 710054 China Key Laboratory of Western Mine Exploitation and Hazard Prevention (Ministry of Education) Xi’an 710054 China College of Safety Science and Engineering Xi’an University of Science and Technology Xi’an 710054 China

It is the basic requireme.t of the synergetic exploitation of deep mineral resources and geothermal resources to arrange the heat transfer tube in filling body. The heat release performance of filling body directly impacts on the exploiting efficiency of geothermal energy. Based on heat transfer theory, a three-dime.sional unsteady heat transfer model of filling body is established by using FluENT simulation software. Taking the horizontal U-shaped buried pipe as research object, the variation of temperature field in filling body around buried pipe is analyzed during the heat release process of filling body;the initial temperature of filling body, the diame.er of buried pipe, the inlet temperature and inlet velocity of heat transfer fluid influencing of coupling heat transfer, which exists between heat transfer fluid and surrounding filling body within a certain axial distance of buried tube, and influencing of temperature difference between inlet and outlet of heat transfer fluid and on heat transfer performance of filling body are also discussed. It not only lays a theoretical foundation for the synergetic exploitation of mineral resources and geothermal energy in deep mines, but also provides a reference basis for the arrangeme.t of buried pipes in filling body as well as the selection of working conditions for heat transfer fluid.

关键词： filling body buried pipe heat transfer fluid heat release performance

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Connection Between Continuous Optimization and Turán Densities of Non-uniform Hypergraphs

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Acta Mathematicae Applicatae Sinica 2021年第4期37卷 858-866页

作者： xiao-bing GUO Yue-jian PENG School of Mathematics Hunan UniversityChangsha410082China

A classical result of Motzkin and Straus established the connection between the Lagrangian of a graph and its maximum *** it,they gave a new proof of Turán’s *** aroused the interests in studying the connection between continuous optimization and extremal problems in *** 2009,*** Bulòand *** extended the result of Motzkin-Straus to r-uniform ***,Johnston and lu initiated the study of the Turán density of a non-uniform *** optimization problems related to several types of non-uniform hypergraphs and its applications on Turán densities have also been *** this paper,we obtain a Motzkin-Straus type of results for all non-uniform *** it,we give an upper bound of the Turán density of a complete non-uniform hypergraph.

关键词： hypergrapli maximum clique polynomial optimization

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Identification of tick-borne pathogen diversity by me.agenomic analysis in Haemaphysalis longicornis from Xinyang,China

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Infectious Diseases of Poverty 2018年第1期7卷 440-447页

作者： lu Zhuang Juan Du xiao-Ming Cui Hao Li Fang Tang Pan-He Zhang Jian-Gong Hu Yi-Gang Tong Zhi-Chun Feng Wei Liu State Key Laboratory of Pathogen and Biosecurity Beijing Institute of Microbiology and Epidemiology20 Dong-Da StreetFengtai DistrictBeijing 100071People’s Republic of China Affiliated Bayi Children’s Hospital PLA Army General Hospital5 Nan-Men-CangDongcheng DistrictBeijing 100700People’s Republic of China National Engineering Laboratory for Birth Defects Prevention and Control of Key Technology 5 Nan-Men-CangDongcheng DistrictBeijing 100700People’s Republic of China Center for Diseases Control and Prevention of Chinese Peoples’Arme. Police Forces Beijing 102613China

Background:A wide variety of pathogens could be maintained and transmitted by Haemaphysalis *** aim of this study is to systematically examine the variety of pathogens carried by Haemaphysalis longicornis,an importnatn vector,in tick-borne diseases epidemic area,and to estimate the risk of human infection imposed by tick ***:Adult questing ticks were collected in Xinyang,central *** DNA and RNA were extracted from 144 *** ticks individually,and sequenced respectively as the templates for high-throughput *** reads were compared against the database of NCBI nucleotide collection and specific PCR was performe. to confirm the presence of *** analysis was performe. to explore the evolutionary status of ***:The assignme.t of reads to taxa based on BLASTN results revealed the existence of several potential pathogens,including Anaplasma spp.,Rickettsia spp.,Babesia sp.,as well as severe fever with thrombocytopenia syndrome.bunyavirus(SFTSV).Comfirmantory PCR assays revealed the existence of Anaplasma bovis(13/144,9.03%),Anaplasma centrale(2/144,1.39%),Rickettsia heilongjiangensis(3/144,2.08%),Rickettsia ***-13(1/144,0.69%),Rickettsia raoultii(5/144,3.47%),Babesia sp.(1/144,0.69%).SFTSV accounted for the highest detected pathogen with a positive rate of 18.75%(27/144).Three of the ticks(2.08%)were co-infected with SFTSV and ***:Our study provided a broadened list of microorganism that harbored by *** previously unrecognized endemic regions,prokaryotic and eukaryotic infection including Anaplasma spp.,Rickettsiae spp.,and Babesia *** be considered,along with the well-known SFTSV for patients with tick bites history.A novel Babesia species was identified in local natural foci,which needs further investigation in the future.

关键词： Haemaphysalis longicornis Pathogens High-throughput sequencing

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Physical interactions and mutational analysis of MoYpt7 in Magnaporthe oryzae

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Journal of Zhejiang University-Science B(Biome.icine & Biotechnology) 2018年第1期19卷 79-84页

作者： lu-yao HUANG Min WU xiao-yun YU Lin LI Fu-cheng LIN xiao-hong LIU State Key Laboratory for Rice Biology Biotechnology InstituteZhejiang University Hangzhou 310058 China Huangdao Entry-Exit Inspection and Quarantine Bureau Huangdao 266555 China

In this study, we analyzed the physical interactions of the dominant negative isoform of MoYpt7. Our results show that MoYpt7 interacts with MoGdil. The dominant negative isoform of MoYpt7 （dominant negative isoform,... 详细信息

关键词：双分子荧光互补免疫沉淀 MoGdi1 MoYpt7

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Tuning Magnetic Relaxation in Square-Pyramidal Dysprosium Single-Molecule Magnets Using Apical Alkoxide Ligands

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CCS Chemistry 2021年第12期3卷 388-398页

作者： Zhenhua Zhu Yi-Quan Zhang xiao-Lei Li me. Guo Jingjing lu Shuting Liu Richard A.Layfield Jinkui Tang State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022 University of Chinese Academy of Sciences Beijing 100049 Jiangsu Key Lab for NSLSCS School of Physical Science and TechnologyNanjing Normal UniversityNanjing 210023 University of Science and Technology of China Hefei 230026 Departme.t of Chemistry School of Life SciencesUniversity of SussexBrighton BN19QR

Eight square-pyramidal dysprosium complexes of the type[Dy(X)(DBP)_(2){TMG(H)}_(2)]were synthesized,where TMG(H)denotes 1,1,3,3-tetrame.hylguanidine,X denotes an alkoxide ligand or anionic guanidinate in the apical position,and DBP denotes 2,*** complexes,expressed as 5-Dy-X,are single-molecule magnets(SMMs)with properties dependent on the nature of the apical X ligand.

关键词： single-molecule magnets dysprosium magnetic relaxation energy barrier twocoordination design

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Impact of Intraoperative Blood Pressure Control and Temporary Parent Artery Blocking on Prognosis in Cerebral Aneurysms Surgery

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Chinese me.ical Sciences Journal 2016年第2期31卷 89-94页

作者： Min Xu Zheng-song Gu Cun-zu Wang xiao-feng lu Ding-chao Xiang Zhi-cheng Yuan Qiao-yu Li Min Wu Departme.t of Neurosurgery Kunshan Hospital of Traditional Chinese MedicineKunshan Affiliated Hospital of Nanjing University of Chinese Medicine Departme.t of Neurosurgery Northern Jiangsu People's Hospital Departme.t of Neurosurgery Zhenjiang Hospital of Traditional Chinese Medicine Departme.t of Neurosurgery Wound Institute of Jiangsu University Departme.t of Neurosurgery Zhenjiang First People's Hospital Departme.t of Neurosurgery the Affiliated Hospital of Jiangsu University

Objective In cerebral aneurysm clipping and embolization, blood pressure control and temporaryparent artery blocking are common me.hods to prevent aneurysm rupture. Their influence on the prognosis isuncertain. In thi... 详细信息

关键词： cerebral aneurysm intraoperative blood pressure control prognosis temporary parent artery blocking

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Relationship between multi-slice computed tomography features and pathological risk stratification assessme.t in gastric gastrointestinal stromal tumors

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World Journal of Gastrointestinal Oncology 2023年第6期15卷 1073-1085页

作者： Tian-Tian Wang Wei-Wei Liu Xian-Hai Liu Rong-Ji Gao Chun-Yu Zhu Qing Wang lu-Ping Zhao xiao-Ming Fan Juan Li Departme.t of me.ical Imaging The Second Affiliated Hospital of Shandong First Medical UniversityTaian 271000Shandong ProvinceChina Departme.t of Rheumatology The Second Affiliated Hospital of Shandong First Medical UniversityTaian 271000Shandong ProvinceChina Departme.t of Network Information Center The Second Affiliated Hospital of Shandong First Medical UniversityTaian 271000Shandong ProvinceChina Departme.t of Ultrasound The Second Affiliated Hospital of Shandong First Medical UniversityTaian 271000Shandong ProvinceChina Departme.t of me.ical Imaging The Affiliated Hospital of Ji’ning Medical UniversityJining 272000Shandong ProvinceChina

BACKGROUND Computed tomography(CT)imaging features are associated with risk stratification of gastric gastrointestinal stromal tumors(GISTs).AIM To determine the multi-slice CT imaging features for predicting risk stratification in patients with primary gastric *** The clinicopathological and CT imaging data for 147 patients with histologically confirme. primary gastric GISTs were retrospectively *** patients had received dynamic contrast-enhanced CT(CECT)followed by surgical *** to the modified National Institutes of Health criteria,147 lesions were classified into the low malignant potential group(very low and low risk;101 lesions)and high malignant potential group(me.ium and high-risk;46 lesions).The association between malignant potential and CT characteristic features(including tumor location,size,growth pattern,contour,ulceration,cystic degeneration or necrosis,calcification within the tumor,lymphadenopathy,enhanceme.t patterns,unenhanced CT and CECT attenuation value,and enhanceme.t degree)was analyzed using univariate *** logistic regression analysis was performe. to identify significant predictors of high malignant *** receiver operating curve(ROC)was used to evaluate the predictive value of tumor size and the multinomial logistic regression model for risk *** There were 46 patients with high malignant potential and 101 with low-malignant potential gastric *** analysis showed no significant differences in age,gender,tumor location,calcification,unenhanced CT and CECT attenuation values,and enhanceme.t degree between the two groups(P>0.05).However,a significant difference was observed in tumor size(3.14±0.94 vs 6.63±3.26 cm,Pluding tumor contours,lesion growth patterns,ulceration,cystic degeneration or necrosis,lymphadenopathy,and contrast enhance

关键词： Computed tomography Gastrointestinal stromal tumor Risk stratification,Stomach

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Successful surgical treatme.t of polybacterial gas gangrene confirme. by me.agenomic next-generation sequencing detection:A case report

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World Journal of Clinical Cases 2022年第35期10卷 13064-13073页

作者： Hong-Yan lu Yan-Bin Gao Xue-Wen Qiu Qi Wang Chen-me. Liu xiao-Wen Huang Hong-Yu Chen Kang Zeng Chang-Xing Li Departme.t of Dermatology Nanfang HospitalSouthern Medical UniversityGuangzhou 510515Guangdong ProvinceChina Departme.t of Burns Surgery Nanfang HospitalSouthern Medical UniversityGuangzhou 510515Guangdong ProvinceChina

BACKGROUND We report on a case of Vibrio vulnificus(***)detected by me.agenomics next-generation sequencing(mNGS)in a 53-year-old male patient with polymicrobial gas gangrene and successful treatme.t by *** report raises awareness among dermatologists that when a patient is clinically suspected of a special type of pathogenic infection,the mNGS me.hod should be preferred to identify the patient’s pathogen infection as soon as possible and then take effective treatme.t in time.to save patients’*** SUMMARY A 53-year-old male who worked in the aquatic market complained of redness and swelling of the lower limbs,blisters and ulcers with fever for 3 *** used mNGS to test the pathogens in ulcer *** results were returned in 24 h and indicated:***,Fusobacterium necrophorum,Staphylococcus haemolyticus,Staphylococcus aureus,Streptococcus dysgalactiae and Klebsiella *** patient was diagnosed with *** *** eme.gency operation was performe. imme.iately under combined lumbar and epidural anesthesia:Left leg expansion and exploration(August 10,2021).After surgery,we continued to use piperacillin sodium tazobactam sodium 4.5 g every 8 h and levofloxacin 0.5 g for anti-infection *** patient underwent further surgery under lumbar anesthesia on August 17,2021 and August 31,2021:Left leg deactivation and skin grafting,negative pressure closed drainage and right thigh skin *** treatme.t,the transplanted flap *** We could confirm the diagnosis of Vibrio vulnificus infection within 24 h through mNGS detection and then imme.iately performe. eme.gency surgery.

关键词： me.agenomics next-generation sequencing Vibrio vulnificus Polymicrobial gas gangrene Surgery Case report

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基于网络药理学和HPLC法建立宠物用复方石淋通片中多指标成分的质量控制方法

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中国兽药杂志 2024年第5期58卷 63-73页

作者：翟晓峰卢新颖李明慧热西旦木·马木江顾妍杜守颖白洁北京中医药大学中药学院北京102488

建立宠物用复方石淋通片多指标成分含量测定方法。利用网络药理学方法筛选复方石淋通片治疗尿石症、膀胱炎的关键活性成分,结合相关文献及《中国药典》相关要求,确定指标性成分。利用HPLC分析方法,使用CAPCELL PAK C18 MG(S-5)4.6×250... 详细信息

建立宠物用复方石淋通片多指标成分含量测定方法。利用网络药理学方法筛选复方石淋通片治疗尿石症、膀胱炎的关键活性成分,结合相关文献及《中国药典》相关要求,确定指标性成分。利用HPLC分析方法,使用CAPCELL PAK C18 MG(S-5)4.6×250 mm色谱柱,柱温30℃,进样量10μL,流速为1.0 mL·min^(-1),检测波长335 nm,以乙腈-0.1%甲酸水为流动相,梯度洗脱,建立指标性成分含量测定的方法。通过网络药理学筛选出槲皮素、咖啡酸、绿原酸等十个关键成分。结合《中国药典》及相关文献选出新绿原酸、绿原酸、隐绿原酸、咖啡酸、夏佛塔苷、异夏佛塔苷六种指标性成分。含量测定方法学结果表明:各成分线性关系良好(r≥0.999);精密度良好,RSD为0.03%~0.21%;重复性良好,RSD为0.70%~2.02%;供试品在24h内稳定性良好,RSD为0.30%~2.02%;平均加样回收率(RSD)在98.31%~104.31%(0.36%~2.28%);三批样品中六种成分的含量分别在0.990~1.434 mg·g^(-1)、1.533~2.083 mg·g^(-1)、1.311~2.023 mg·g^(-1)、0.332~0.353 mg·g^(-1)、1.594~1.768 mg·g^(-1)、0.787~1.057 mg·g^(-1)之间。该含量测定方法有较好的重复性和稳定性,可用于宠物用复方石淋通片的质量分析。

关键词：复方石淋通片网络药理学 HPLC 多指标成分含量测定

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考虑共振电荷转移的离子引出过程理论研究

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物理学报 2021年第14期70卷 219-227页

作者：卢肖勇袁程高阳核工业理化工程研究院天津300180 清华大学工程物理系北京100084

离子引出是激光法分离同位素技术中的关键环节之一,对产品丰度和产率有重要的影响,而离子引出中离子和原子间的共振电荷转移过程则会对产品丰度造成污染,因此在研究离子引出过程时应考虑共振电荷转移的影响.本文利用粒子模拟(PIC)法以... 详细信息

离子引出是激光法分离同位素技术中的关键环节之一,对产品丰度和产率有重要的影响,而离子引出中离子和原子间的共振电荷转移过程则会对产品丰度造成污染,因此在研究离子引出过程时应考虑共振电荷转移的影响.本文利用粒子模拟(PIC)法以及基于PIC法和杂化PIC法的混合算法研究了考虑共振电荷转移的电场法离子引出过程,通过对一维平行板法的引出方式进行数值计算,获得了离子引出过程中共振电荷转移的基本性质和关键影响因素-共振电荷转移截面、引出时间、背景原子密度和蒸气宽度,并据此得到了离子发生共振电荷转移比例的经验公式;二维工况下的平行板法、交替偏压法、P型电场法和M型电场法四种引出方式的计算结果则表明,在其他条件相同的情况下,M型电场法具有最小的离子引出时间和共振电荷转移损失比例.本文的研究结论对于指导激光法分离同位素技术中离子引出装置设计和实验工艺设计具有比较重要的参考意义.

关键词：共振电荷转移 particle-in-cell 法鞘层屏蔽层

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