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Congenital bronchobiliary fistula: A case report and review of the literature

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World Journal of Clinical Cases 2019年第7期7卷 881-890页

作者： tian-yu li Zhi-Bo Zhang Department of Pediatric Surgery Shengjing Hospital of China Medical University

BACKGROUND Congenital bronchobiliary fistula is a rare developmental abnormality with an abnormal fistula between the respiratory system and biliary tract. The aim of this report is to analyze and summarize the clinical features and experience of diagnosing and treating congenital bronchobiliary fistula(CBBF) occurring in the neonatal *** SUMMARY The onset of symptoms was 3 d after birth in our patient with progressive cyanosis and respiratory distress, and a large amount of green fluid was noticed in her respiratory secretion. We performed computed tomography(CT),fiberoptic bronchoscopy, and cholangiography to make a diagnosis, as well as fistulography with a bronchoscope for the first time. These examinations provided us with valuable images to make a correct diagnosis. The fistula was dissected and removed with excellent results. Surgical removal of the fistula was successful, and the baby recovered well and was discharged. She has been followed for 4 mo without any signs of *** The main symptom of CBBF is bile-like sputum. CT, bronchoscopy,fistulography, and intraoperative cholangiography can provide important evidence for diagnosis. Surgical resection of the fistula is the first choice of treatment.

关键词： Congenital bronchobiliary fistula Neonate Computed tomography Bronchoscopy Fistulography Case report

A study of the effect of local scour on the flow field near the spur dike

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Theoretical & Applied Mechanics Letters 2024年第2期14卷 98-105页

作者： yu-tian li Jie-Min Zhan Wing-Hong Onyx Wai Department of Industrial Design School of Industrial Design and Ceramic ArtFoshan UniversityFoshan 528000China Department of Applied Mechanics and Engineering Shenzhen Campus of Sun Yat-sen UniversityShenzhen 518107China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong Kong 999077China

The flow field near a spur dike such as down flow and horseshoe vortex system(HVS)are susceptible to the topographic changes in the local scouring process,resulting in variation of the sediment transport with *** this study,large eddy simulations with fixed-bed at different scouring stages were conducted to investigate the changes in flow *** results imply that the bed deformation leads to an increase in flow rate per unit area,which represent the capability of sediment transportation by water,in the scour ***,the intensity of turbulent kinetic energy and bimodal motion near the sand bed induced by the HVS were also ***,the peak moments between the two sediment transport mechanisms were ***,understanding the complex feedback mechanism between topography and flow field is essential for the local scour problem.

关键词： Spur dike Local scour Large eddy simulation Down flow Horseshoe vortex system

Effects of different courses of moxibustion treatment on intestinal flora and inflammation of a rat model of knee osteoarthritis

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Journal of Integrative Medicine 2022年第2期20卷 173-181页

作者： Ye-juan Jia tian-yu li Peng Han yu Chen li-jia Pan Chun-sheng Jia School of Acupuncture Moxibustion and TuinaHebei University of Chinese MedicineShijiazhuang 050200Hebei ProvinceChina

Objective:This study was done to determine the effects of different courses of moxibustion on a rat knee osteoarthritis(KOA)model,and explore the dose–effect relationship of moxibustion on KOA from the perspectives of intestinal flora and inflammatory ***:Wistar rats were randomly divided into five groups:normal,model,moxibustion for 2 weeks,moxibustion for 4 weeks and moxibustion for 6 weeks groups(n=5 each group).A KOA rat model was induced by monosodium iodoacetate,and moxibustion intervention was performed at the acupoints“Dubi”(ST35)and“Zusanli”(ST36),once every other *** changes in the cartilage of rat knee joints were assessed after intervention,and fecal samples were subjected to 16 S r RNA high-throughput sequencing for microbial diversity ***:Damage to the knee articular cartilage was obvious in the model group,which also had increased levels of pro-inflammatory factors,decreased levels of anti-inflammatory factors,and intestinal flora disorders with decreased *** degree of cartilage damage in the 4 and 6 weeks of moxibustion groups was significantly improved compared with the model *** 4 and 6 weeks of moxibustion groups also demonstrated reduced levels of interleukin-1βand tumor necrosis factor-a and increased levels of interleukin-10(Pligenes group and Ruminococcaceae UCG-014 increased,while that of the pathogenic bacteria Lachnospiraceae NK4 A136 group decreased(P<0.05).Although the abundance of Lachnospiraceae NK4 A136 group decreased in the 2 weeks of moxibustion group compared with the model group(P<0.05),there was no statistically significant difference in serum inflammatory factors,flora species diversity or degree of pathological damage compared with the model ***:Moxibustion treatment led to significant improvements in t

关键词： Knee osteoarthritis Different courses Moxibustion treatment Intestinal flora Inflammatory cytokines

Simulation of inclined dendrites under natural convection by KKS phase field model based on CUDA

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China Foundry 2023年第5期20卷 432-442页

作者： Chang-sheng Zhu tian-yu li Bo-rui Zhao Cang-long Wang Zi-hao Gao College of Computer and Communication Lanzhou University of TechnologyLanzhou 730050China State Key Laboratory of Gansu Advanced Processing and Recycling of Non-Ferrous Metal Lanzhou University of TechnologyLanzhou 730050China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000GuangdongChina

In this work,Al-4.5wt.%Cu was selected as the research object,and a phase field-lattice Boltzmann method(PF-LBM)model based on compute unified device architecture(CUDA)was established to solve the problem of low serial computing efficiency of a traditional CPU and achieve significant *** model was used to explore the evolution of dendrite growth under natural *** the study of the tip velocities,it is found that the growth of the dendrite arms at the bottom is inhibited while the growth of the dendrite arms at the top is promoted by natural *** addition,research on the inclined dendrite under natural convection was *** is observed that there is a deviation between the actual growth direction and the preferred angle of the inclined *** the increase of the preferred angle of the seed,the difference between the actual growth direction and the initial preferred angle of the inclined dendrite shows a trend of increasing at first and then *** the simulation area,the relative deflection directions of the primary dendrite arms in the top right corner and the bottom left corner of the same dendrite are almost counterclockwise,while the relative deflection directions of the other two primary dendrite arms are clockwise.

关键词： PF-LBM natural convection inclined dendrites CUDA

Upper Bounds on the Multicolor Ramsey Numbers rk（C4）

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Acta Mathematicae Applicatae Sinica 2023年

作者： tian-yu li Qi-zhong liN Center for Discrete Mathematics Fuzhou University

The multicolor Ramsey number rk（C4） is the smallest integer N such that any k-edge coloring of KNcontains a monochromatic C4. The current best upper bound of rk（C4） was obtained by Chung（1974） and independently by Irving（1974）, i.e., rk（C4） ≤ k2+ k + 1 for all k ≥ 2. There is no progress on the upper bound since then. In this paper, we improve the upper bound of rk（C4） by showing that rk（C4） ≤ k2+ k-1 for even k ≥ 6. The improvement is based on the upper bound of the Turn number ex（n, C4）, in which we mainly use the double counting method and many novel ideas from Firke, Kosek, Nash, and Williford [J. Combin. Theory,Ser. B 103（2013）, 327–336].

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Discordance analysis for apolipoprotein and lipid measures for predicting myocardial infarction in statin-treated patients with coronary artery disease:a cohort study

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Journal of Geriatric Cardiology 2023年第12期20卷 845-854页

作者： tian-yu li Pei ZHU Ying SONG Xiao-Fang TANG Zhan GAO Run-lin GAO Jin-Qing yuAN National Clinical Research Center for Cardiovascular Diseases National Center for Cardiovascular DiseasesState Key Laboratory of Cardiovascular DiseaseFuwai HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Department of Cardiology Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

BACKGROUND The optimal apolipoprotein or lipid measures for identifying statin-treated patients with coronary artery disease(CAD)at residual cardiovascular risk remain *** study aimed to compare the predictive powers of apolipoprotein B(apoB),non-high-density lipoprotein cholesterol(non-HDL-C),low-density lipoprotein cholesterol(LDL-C),apoB/apolipoprotein A-1(apoA-1)and non-HDL-C/HDL-C for myocardial infarction(MI)in CAD patients treated with statins in the setting of secondary *** The study included 9191 statin-treated CAD patients with a five-year median *** measures were anal-yzed as continuous variables and concordance/discordance groups by *** hazard ratio(HR)with 95%CI was estimated by Cox proportional hazards *** were classified by the clinical presentation of CAD for further *** The high-apoB-low-LDL-C and the high-non-HDL-C-low-LDL-C categories yielded HR of 1.40(95%CI:1.04–1.88)and 1.51(95%CI:1.07–2.13)for MI,respectively,whereas discordant high LDL-C with low apoB or non-HDL-C was not associa-ted with the risk of *** association of MI with discordant apoB versus non-HDL-C,apoB/apoA-1 versus apoB,non-HDL-C/HDL-C versus non-HDL-C,or apoB/apoA-1 versus non-HDL-C/HDL-C was *** patterns were found in patients with acute coronary *** contrast,no association was observed between any concordance/discordance category and the risk of MI in patients with chronic coronary *** ApoB and non-HDL-C better predict MI in statin-treated CAD patients than LDL-C,especially in patients with acute coronary ***/apoA-1 and non-HDL-C/HDL-C show no superiority to apoB and non-HDL-C for predict-ing MI.

关键词： patients coronary infarction

Development of a low-background neutron detector array

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Nuclear Science and Techniques 2022年第4期33卷 10-18页

作者： yu-tian li Wei-Ping lin Bing-Shui Gao Han Chen Hao Huang yu Huang Tao-yu Jiao Kuo-Ang li Xiao-Dong Tang Xin-yu Wang Xiao Fang Han-Xiong Huang Jie Ren Long-Hui Ru Xi-Chao Ruan Ning-Tao Zhang Zhi-Chao Zhang CAS Key Laboratory of High Precision Nuclear Spectroscopy Institute of Modern PhysicsChinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Radiation Physics and Technology of the Ministry of Education Institute of Nuclear Science and TechnologySichuan UniversityChengdu 610064China Joint Department for Nuclear Physics Lanzhou University and Institute of Modern PhysicsChinese Academy of SciencesLanzhou 730000China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China China Institute of Atomic Energy Beijing 102413China

A low-background neutron detector array was developed to measure the cross section of the ^(13)C(a,n)^(16)O reaction,which is the neutron source for the s-process in AGB stars,in the Gamow window(E_(c.m.)=190±40 keV)at the China Jinping Underground Laboratory(CJPL).The detector array consists of 24^(3)He proportional counters embedded in a polyethylene *** to the deep underground location and a borated polyethylene shield around the detector array,a low background of 4.5(2)/h was *** ^(51)V(p,n)^(51)Cr reaction was used to determine the neutron detection efficiency of the array for neutrons with energies E_(n)<1 ***4 simulations are shown to effectively reproduce the experimental *** were used to extrapolate the detection efficiency to higher energies for neutrons emitted in the ^(13)C(α,n)^(16)O *** theoretical angular distributions of the ^(13)C(α,n)^(16)O reaction were shown to be important in the estimation of the uncertainties of the detection efficiency.

关键词： Underground laboratory Neutron detector Low background ^(3)He Counter

Bending behaviors of large diameter thin-walled CP-Ti tube in rotary draw bending

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Progress in Natural Science:Materials International 2011年第5期21卷 401-412页

作者： Zhi-yong ZHANG,He YANG,Heng li,Ning REN,yu-li tian State Key Laboratory of Solidification Processing,School of Materials Science and Engineering, Northwestern Polytechnical University,Xi’an 710072,China State Key Laboratory of Solidification Processing School of Materials Science and Engineering Northwestern Polytechnical University Xi'an 710072 China

The rotary draw bending(RDB) of large diameter thin-walled(LDTW) tube needs the strict cooperation of multiple processing parameters to avoid possible multiple *** to the specific properties,the bending behaviors of LDTW commercial pure titanium(CP-Ti) tube are much more complex to achieve precise *** the CP-Ti tube of 50.8 mm(out diameter, D)×0.508 mm(wall thickness,t)×101.6 mm(bending radius,R) as a representative component,the bending behaviors of LDTW CP-Ti tube under different processing conditions were *** experiments and analytical analysis,the bending characteristics of the CP-Ti tube were ***,based on the orthogonal experimental design,a series of three-dimensional FE models of RDB for LDTW CP-Ti tube were established,and the effects of processing parameters on the bending behaviors were numerically *** results show that:1) Wrinkling is the primary behavior for the LDTW CP-Ti tube in RDB,and the larger the difference between the maximum wall thickening and the maximum wall thinning degrees of the bent tube,the larger the wrinkling tendency;2) The bending behaviors of the LDTW CP-Ti tube are very sensitive to the some processing parameters,and the wrinkling is significantly affected by the mandrel shank diameter,while the wall thinning is remarkably affected by the clearance between wiper die and tube,mandrel shank *** qualified bent tube with the wall thinning of 11.43%,the cross-section distortion of 2.69%and the wrinkling height less than 2%is then obtained.

关键词： CP-Ti tube large diameter rotary draw bending bending behaviors processing parameters

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残留农药的光学检测技术和去噪处理

计量学报 2009年第6期30卷 -页

作者：王玉田张立梅 yu-tian li-mei 燕山大学测试计量技术与仪器河北省重点实验室　　河北秦皇岛　　（066004）

根据残留农药受到紫外光激发能够发出荧光的机理,研究了一种用于测量残留农药浓度的荧光光纤测量系统.该系统采用脉冲氙灯作为激发光源,光纤探测并传输荧光,电荷耦合器(CCD)作为荧光检测系统的光电转换器件.由于荧光是微弱信号,系统采... 详细信息

根据残留农药受到紫外光激发能够发出荧光的机理,研究了一种用于测量残留农药浓度的荧光光纤测量系统.该系统采用脉冲氙灯作为激发光源,光纤探测并传输荧光,电荷耦合器(CCD)作为荧光检测系统的光电转换器件.由于荧光是微弱信号,系统采用微弱信号处理电路对CCD输出信号进行了处理,并且采用相关双采样技术有效地抑制了CCD输出噪声的干扰.用该系统对吡虫啉溶液进行荧光分析,实现了对吡虫啉的快速测定,在5～100μg/L范围内,荧光强度和浓度基本呈线性关系,线性相关系数为0.9959.Abstract：Based on the mechanism that pesticide can emit fluorescence in the ultraviolet light, a fluorescence fiber- optical measuring system is developed for monitoring its concentration. This system makes use of pulse xenon lamp as exciting light source, the optical fiber detects and transmits the fluorescence, charge coupled device (CCD) is used to photo-electricity transformation component of fluorescence measuring system. Because fluorescence is a weak signal, the system uses the weak signal processing circuit to carry on processing to the CCD output signal and uses the correlated double sample technique to control the disturbance Of CCD output noise effectively. Carting on the fluorescence analysis with this system to the imidaeloprid, the imidacloprid fast determination was realized. In the scope of 5～100 μg/L, the fluorescence intensity and the density assume the linear relations, the linear correlation coefficient is basically 0. 9959.

关键词：残留农药光学检测技术去噪处理 fluorescence intensity measuring system 荧光检测系统 correlation coefficient weak signal fluorescence analysis exciting light source CCD输出信号 ultraviolet light signal processing 微弱信号处理电路 transformation output signal optical fiber 线性相关系数光纤测量系统光电转换器件