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Fractal Characteristics and Prediction of Backsilting Quantity in Yangtze Estuary Deepwater Channel

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China Ocean Engineering 2018年第3期32卷 341-346页

作者： li lan-xi PAN Yun li li Business School Hohai University Marine Science and Technology College Zhejiang Ocean University Institute of Port Coastal and Offshore Engineering Ocean Collage Zhejiang University

Fractal interpolation has been an important method applied to engineering in recent years. It can not only be used to fit smooth curve and stationary data but also show its unique superiorities in the fatting of non-smooth curve and non-stationary data. Through analyzing such characteristic values as average value, standard deviations, skewness and kurtosis of measured backsilting quantities in the Yangtze Estuary 12.5 m Deepwater Channel during2011–2017, the fractal interpolation method can be used to study the backsilting quantity distribution with *** to the fractal interpolation made on the channel backsilting quantities from January 2011 to December2017, there was a good corresponding relationship between the annual(monthly) siltation quantities and the vertical scaling factor. On this basis, a calculation formula for prediction of the backsilting quantity in the Yangtze Estuary Deepwater Channel was constructed. With the relationship between the predicted annual backsilting quantities and the vertical scaling factor, the monthly backsilting quantities can be obtained. Thus, it provides a new method for estimating the backsilting quantity of the Yangtze Estuary Deepwater Channel.

关键词： Yangtze Estuary Deepwater Channel backsilting quantity fractal interpolation prediction

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运动对大学生肠道菌群影响的系统综述

中国组织工程研究 2025年第11期29卷 2394-2401页

作者：刘昭志黄丽田浩冬李岚陈晓陶云飞彭莉西南大学体育学院重庆市400715 西南大学体育学院国家体育总局体质评价与运动机能监控重点实验室重庆市400715 山东中医药大学健康学院山东省济南市250000

背景:运动对肠道菌群的调节与人体健康密切相关,但肠道菌群涉及多方面因素影响,国内外研究尚缺乏有关运动对大学生肠道菌群影响的较为一致的证据。目的:探讨运动对大学生肠道菌群多样性和物种组成的影响。方法:通过系统检索PubMed、Web ... 详细信息

背景:运动对肠道菌群的调节与人体健康密切相关,但肠道菌群涉及多方面因素影响,国内外研究尚缺乏有关运动对大学生肠道菌群影响的较为一致的证据。目的:探讨运动对大学生肠道菌群多样性和物种组成的影响。方法:通过系统检索PubMed、Web of Science、Embase、Medline、Cochrane library、中国知网、万方、维普数据库,筛选后纳入8篇实证研究,对其采用半定量的方法进行分析。结果与结论:①在运动改变大学生肠道菌群物种多样性方面,高强度间歇训练和太极拳运动均能显著提升大学生肠道菌群的物种多样性,而有氧运动对大学生肠道菌群多样性的提升效果不显著;②在运动影响肠道菌群物种组成方面,3种运动方式均能显著改变大学生肠道中菌群的组成结构,可以提高瘤胃球菌、普氏粪杆菌、布劳提亚菌等有益菌的丰度,降低埃希氏菌属等有害菌的丰度;相较于高强度间歇训练,有氧运动和太极拳运动引起了更多有益菌丰度的提升;③除肠道菌群特征的变化外,运动还可以改善大学生体成分、心肺功能以及执行功能等,这些健康效益与运动引起的菌群变化密切相关,这些菌群可通过代谢调节、屏障功能以及神经调节对机体产生健康效益;④虽然目前已有研究证实了运动与肠道菌群存在关联,但运动影响肠道菌群的机制尚未明确,同时定位与宿主健康相关的菌群是未来以肠道菌群为治疗靶点的关键,这些均值得学者进一步关注和探究。

关键词：运动干预大学生肠道菌群菌群多样性物种组成

A direct electrochemical biosensor for rapid glucose detection based on nitrogen-doped carbon nanocages

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Rare Metals 2024年第5期43卷 2184-2192页

作者： lan-lan li Yu Zhao li-Jia Pan Jian-Bin Xu Yi Shi College of Mechanical and Electrical Engineering Henan Agricultural UniversityZhengzhou 450002China School of Electronic Science and Engineering Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China Department of Electronic Engineering The Chinese University of HongKongHongkong 999077China

Given the increasing number of diabetic patients,rapid and accurate detection of glucose in body fluids is *** study developed a direct electrochemical biosensor for glucose based on nitrogen-doped carbon nanocages(NCNCs).NCNCs possess a large specific surface area of 1395 m^(2)·g^(-1),a high N atomic content of 9.37%and good biocompatibility,which is favorable for enzyme loading and electron *** surface average concentration of electroactive glucose oxidase on NCNCs was 2.82×10^(-10)mol·cm^(-2).The NCNC-based direct electrochemical biosensor exhibited a high sensitivity of 13.7μA·(mmol·L^(-1))^(-1)·cm^(-2),rapid response time of 5 s and an impressive electron-transferrate constant(ks)of 1.87 s^(-1).Furthermore,we investigated an NCNC-based direct electron transfer(DET)biosensor for sweat glucose detection,which demonstrated tremendous promise for non-invasive wearable diabetes diagnosis.

关键词： Direct electron transfer(DET) Nitrogen-doped carbon nanocages(NCNCs) Glucose oxidase Biosensor

Existence of Pseudo-Almost Automorphic Solutions for Nonlinear Differential Equations

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Acta Mathematicae Applicatae Sinica 2014年第4期30卷 977-988页

作者： lan li YAN WANG College of Mathematics and Computational Science Shenzhen University School of Mathematical Sciences Dalian University of Technology

In this paper, we discuss the existence of pseudo-almost automorphic solutions to linear differential equation which has an exponential trichotomy~ and the results also hold for some nonlinear equations with the form x＇（t） = f（t,x（t））＋ λg（t,x（t））, where f,g are pseudo-almost automorphic functions. We prove our main result by the application of Leray-Schauder fixed point theorem.

关键词： Pseudo-almost automorphic exponential trichotomy Leray-Schauder fixed point theorem

A systematic review and meta-analysis of the Chinese literature for the treatment of achalasia

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World Journal of Gastroenterology 2008年第38期14卷 5900-5906页

作者： lan Wang You-Ming li lan li Chao-Hui Yu Department ofGastroenterology the First Affiliated Hospital Medical CollegeZhejiang University Hangzhou 310003 Zhejiang ProvinceChina

AIM: To evaluate the effect of different approaches in the treatment of achalasia in China. METHODS: We performed a systematic review and meta-analysis of Chinese literature by searching the Chinese Biomedical Database and Chinese scientific Journals database (up to March 2008). All cohort studies (controlled or uncontrolled) in which the patients were observed for more than a year were reviewed in detail. Dichotomous outcomes were reported as relative risks (RR) with 95% confidence interval (CI) for controlled trials. The efficacy in uncontrolled trials was assessed by a pooled estimate of response rate with individual studies weighted in proportion to the sample size. RESULTS: Seven controlled trials compared the effect of botulinum toxin injection (BoTx) with pneumatic dilation (PD). PD was superior to BoTx [65.2% vs 45.3%; RR 1.47 (95% CI 1.23-1.77), P linical relapse rate (BoTx 30.2% vs PD 10%, RR 0.32 (0.16-0.65), P = 0.001). Heller myotomy (HM) had superior remission rate compared to PD [HM 94.0% vs PD 64.1%, RR 1.48 (1.15-1.99), P = 0.002]. In uncontrolled trials, the effectiveness of PD was 86.6% (23.9%) vs 94.8% (10.6%) for HM. The main complications of PD were perforation and gastroesophageal reflux disease. CONCLUSION: HM is the most effective long-term treatment for patients with achalasia in China. In the future, controlled clinical trials on the treatment of achalasia should focus on comparing laparoscopic myotomy with or without antireflux procedure,including different partial and total fundoplication techniques.

关键词： Meta-analysis Achalasia Esophageal Treatment Pneumatic dilation Botulinum toxin injection Laparoscopic myotomy

13th Asia-Pacific Congress of Clinical Microbiology and Infection Consensus Guidelines for diagnosis and treatment of liver failure

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Hepatobiliary & Pancreatic Diseases International 2013年第4期12卷 346-354页

作者： lan-Juan li Organization Committee of 13th Asia-Pacific Congress of Clinical Microbiology and Infection State Key Laboratory for Diagnosis and Treatment of Infectious Diseases First Affiliated Hospital Zhejiang University School of Medicine

Introduction liver failure is defined as hepatocellular dysfunction manifested by severe synthetic and metabolic disturbance with extremely high *** and clinicians have been trying to explore itsdefinition,classificat... 详细信息

关键词： liver failure

Impact of forcing data and land surface properties on snow simulation in a regional climate model:a case study over the Tianshan Mountains,Central Asia

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Journal of Mountain Science 2021年第12期18卷 3147-3164页

作者： li Qian YANG Tao li lan-hai State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China Ili Station for Watershed Ecosystem Research Chinese Academy of SciencesXinyuan 835800China Key Laboratory for Mountain Hazards and Earth Surface Process Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China CAS Research Centre for Ecology and Environment of Central Asia Urumqi 830011China Xinjiang Key Laboratory of Water Cycle and Utilization in Arid Zone Urumqi 830011China

Snow is a key variable that influences hydrological and climatic *** surface models employing snow physics-modules can simulate the snow accumulation and ablation ***,there are still uncertainties in modeling snow resources over complex terrain such as *** study employed the National Center for Atmospheric Research’s Weather Research and Forecasting(WRF)model coupled with the Noah-Multiparameterization(Noah-MP)land surface model to run one-year simulations to assess its ability to simulate snow across the Tianshan *** tests were conducted based on different reanalysis forcing datasets and different land surface *** results indicated that the snow dynamics were reproduced in a snow hydrological year by the WRF/Noah-MP model for all of the *** model produced a low bias in snow depth and snow water equivalent(SWE)regardless of the forcing ***,the underestimation of snow depth and SWE could be relatively alleviated by modifying the land cover and vegetation ***,no significant improvement in accuracy was found in the date of snow depth maximum and melt *** best performance was achieved using ERA5 with modified land cover and vegetation parameters(mean bias=−4.03 mm and−1.441 mm for snow depth and SWE,respectively).This study highlights the importance of selecting forcing data for snow simulation over the Tianshan Mountains.

关键词： WRF/Noah-MP model Initial and lateral boundary conditions land surface properties Snow depth Snow water equivalent

Damping of displaced chaotic light field in amplitude dissipation channel

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Chinese Physics B 2020年第10期29卷 161-166页

作者： Ke Zhang lan-lan li Hong-Yi Fan School of Electronic Engineering Huainan Normal UniversityHuainan 232038China University of Science and Technology of China Hefei 230031China

We explore how a displaced chaotic light (DCL) behaves in an amplitude dissipation channel, and what is its time evolution formula of photon number distribution. With the use of the method of integration within ordered product product of operator (IWOP) and the new binomial theorem involving two-variable Hermite polynomials we obtain the evolution law of DCL in the channel.

关键词： displaced chaotic light amplitude dissipation channel time evolution formula IWOP

Perspectives and Challenges of Family Members in Providing Mental Support to Cancer Patients:A Qualitative Study in Beijing,China

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Psycho-Oncologie 2024年第4期18卷 257-269页

作者： Wei Wang lan li Department of Social Sciences Universiti SelangorBatang Berjuntai45600Selangor Beijing Youth Research Association Beijing100044China Sinounited Investment Group Corporation limited Postdoctoral Programme Beijing102611China

This study explores the perspectives and challenges faced by family members providing mental support to cancer patients in Beijing,*** primary objective is to understand the emotional and practical roles family members undertake and the difficulties they *** a qualitative research design,data were collected through semi-structured interviews with family caregivers of cancer *** analysis revealed several key themes:the dual burden of emotional support and caregiving responsibilities,the impact on daily life and personal well-being,the role and effectiveness of external support systems,perceptions of medical staff support,and the common challenges and conflicts faced in *** findings highlight the critical need for comprehensive support systems that address both the emotional and practical needs of family *** for enhancing family-centered support programs in oncology settings are discussed.

关键词： Family caregivers mental health support cancer patients qualitative study Beijing caregiving challenges emotional support healthcare systems