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Evidence-based control of stress response on intraoperative physiological indexes and recovery of patients undergoing gastrointestinal surgery

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World Journal of Gastroenterology 2025年第8期31卷 72-81页

作者： Chen-Dong Yuan Bao-zhu zhou Ning-Yan Wang Qing-Qing Wan Zhen-Zhen Hu Department of General Surgery The First Affiliated Hospital of Nanchang UniversityNanchang 330006Jiangxi ProvinceChina Department of Anesthesiology The First Affiliated Hospital of Nanchang UniversityNanchang 330006Jiangxi ProvinceChina

BACKGROUND Although the 2021 Chinese Clinical Practice Guidelines for Enhanced Recovery after Surgery(ERAS)provide recommendations for ERAS in gastrointestinal surgery,the clinical application of standard ERAS nursing models is challenging due to the variety of diseases involved in gastrointestinal surgery and the com-plex factors contributing to patient stress ***,stress responses are more severe in older adult ***,precision medicine is required to improve the quality of nursing care and promote postoperative recovery in gastrointestinal *** demonstrate nursing benefits through clinical *** This randomized clinical trial first established an evidence-based nursing ERAS protocol in older adult patients based on literature related to perioperative nursing measures for gastrointestinal surgery stress ***,392 older adult patients who underwent gastrointestinal surgery and were admitted to our hospital between December 2021 and June 2023 were categorized into two groups to receive evidence-based(study group)or conventional(control group)ERAS nursing models,*** physiological parameters during surgery and postoperative recovery indicators were compared between the *** Among 64 domestic and international studies,the stress responses of older adult patients mainly included emotional anxiety,sleep disorders,gastrointestinal discomfort,physical weakness,pain,and *** appropriate nursing interventions included comprehensive psychological counseling,pre-and postoperative nutritional support,temperature control,pain management,and rehabilitation *** with the control group,the study group showed lower heart rate,mean arterial pressure,blood glucose level,and adrenaline level;shorter duration of drainage tube placement,time to first flatus,time to first ambulation,and postoperative hospital stay;lower anxiety scores on postoperative day 3;and lower incidences of po

关键词： Older adult patients Gastrointestinal surgery Stress response Evidence-based nursing Enhanced recovery after surgery

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汉语学习者名词外部物性关系习得研究

汉语学习 2025年第1期 82-92页

作者：朱周晔熊文新北京大学对外汉语教育学院北京100871 北京外国语大学中国语言文学学院北京100089

本文以物性结构理论为指导,以405篇汉语学习者作文和135篇汉语本族语者作文为语料,自下而上获取28595个核心名词,从句子层面考察汉语学习者对名词与共现成分之间外部物性关系的习得表现。研究发现:(1)名词外部物性关系的分布呈现不均衡... 详细信息

本文以物性结构理论为指导,以405篇汉语学习者作文和135篇汉语本族语者作文为语料,自下而上获取28595个核心名词,从句子层面考察汉语学习者对名词与共现成分之间外部物性关系的习得表现。研究发现:(1)名词外部物性关系的分布呈现不均衡的特点:单个物性角色以处置、行为、定位、施成、评价、功用六种类型为主;多个物性角色组合以两个物性角色组合为主;(2)名词外部物性关系的产出呈现非线性发展路径:单个物性角色由稳定发展转为显著增加,多个物性角色组合保持稳定发展;不同物性角色的发展趋势各异。

关键词：物性结构名词外部物性关系汉语学习者

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新疆玛纳斯河流域平原区地下水无机组分分布特征、源解析及健康风险评价

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环境科学 2025年第2期46卷 843-853页

作者：康文辉周殷竹周金龙姜凤韩双宝雷米刘金巍新疆农业大学水利与土木工程学院乌鲁木齐830052 新疆水文水资源工程技术研究中心乌鲁木齐830052 新疆水利工程安全与水灾害防治重点实验室乌鲁木齐830052 中国地质调查局水文地质环境地质调查中心天津300304

在新疆玛纳斯河流域地下水是日常生活、农业灌溉和工业生产用水的主要来源.为了探明地下水中无机组分的空间分布、来源及其对人体健康的负面影响,在玛纳斯河流域平原区共采集37组地下水样品,通过GIS克里金插值、PMF来源解析、Pearson相... 详细信息

在新疆玛纳斯河流域地下水是日常生活、农业灌溉和工业生产用水的主要来源.为了探明地下水中无机组分的空间分布、来源及其对人体健康的负面影响,在玛纳斯河流域平原区共采集37组地下水样品,通过GIS克里金插值、PMF来源解析、Pearson相关性分析和健康风险评价模型,分析地下水中无机组分的空间分布、来源和潜在健康风险.结果表明,区内地下水整体呈弱碱性.TDS和Cl^(-)具有相似的分布特征,在平原区东部浓度较高;SO_(4)^(2-)高值区主要分布在玛纳斯县周边以及古尔班通古特沙漠边缘;NO_(3)^(-)-N浓度变化受人类活动的影响较大,空间分布不均,高值区主要分布在城市区域;砷(As)、氟(F)和碘(I)是影响地下水质量的重要无机组分,分别有51.35%、 45.95%和51.35%地下水超过《地下水质量标准》Ⅲ类限值,超标区均分布于西岸大渠以北的低平原区,该区域地形坡度和水力坡度较小,含水层颗粒较细,地下水径流强度较弱,利于地下水中As、F和I的富集.源解析结果表明,地下水不同含水层具有相似的来源或者演化过程.无机组分的富集主要受控于溶滤-富集作用、地质条件-生活污水-农业灌溉的点源污染、农业活动、生活污水导致的点源污染、碱性还原环境和离子交换作用.健康风险评价结果表明,玛河流域平原区无潜在非致癌风险.地下水中的As是威胁人类健康的主要无机物,其对儿童和成人的非致癌风险可以忽略不计,而致癌风险则不可忽略,且儿童对其致癌风险更敏感.因此,玛河流域饮用水供水安全应更多地关注As暴露的影响,特别是对儿童的影响.

关键词：地下水无机组分空间分布源解析健康风险评价玛纳斯河流域平原区

Computational analysis of(MAP_1,MAP_2)/(PH_1,PH_2)/N queues with finite buffer in wireless cellular networks

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Journal of Systems Engineering and Electronics 2011年第5期22卷 739-748页

作者： Zonghao zhou Yijun zhu Faculty of Science Jiangsu University Zhenjiang 212013 P. R. China

This paper studies a queueing model with the finite buffer of capacity K in wireless cellular networks, which has two types of arriving calls--handoff and originating calls, both of which follow the Markov arriving process with different rates. The channel holding times of the two types of calls follow different phase-type distributions. Firstly, the joint distribution of two queue lengths is derived, and then the dropping and blocking probabilities, the mean queue length and the mean waiting time from the joint distribution are gotten. Finally, numerical examples show the impact of different call arrival rates on the performance measures.

关键词： wireless cellular network queue Markov arriving process (MAP) phase-type (PH) distribution handoff call originating call.

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翼身融合布局平面参数对变弯度减阻特性分析

北京航空航天大学学报 2025年第2期51卷 525-545页

作者：王雨桐刘悦王浩杨体浩刘红阳周铸中国空气动力研究与发展中心计算空气动力研究所绵阳621000 西北工业大学航空学院西安710072

变弯度技术能提升飞行器气动性能,与翼身融合(BWB)布局相结合可进一步增强其气动优势。但无尾BWB仅靠后缘舵面配平,纵向力臂短,配平阻力惩罚大,因此进行BWB后缘变弯度设计时需充分考虑配平阻力损失。针对无尾BWB,考虑平面参数对后缘舵... 详细信息

变弯度技术能提升飞行器气动性能,与翼身融合(BWB)布局相结合可进一步增强其气动优势。但无尾BWB仅靠后缘舵面配平,纵向力臂短,配平阻力惩罚大,因此进行BWB后缘变弯度设计时需充分考虑配平阻力损失。针对无尾BWB,考虑平面参数对后缘舵面配平能力的影响,基于全局优化方法研究了不同机翼后掠角和机翼位置的BWB构型上后缘变弯度技术的减阻原理和作用效果。结果表明:在不同升力系数下,配平阻力损失都显著减小变弯度技术的减阻收益。BWB平面参数通过影响激波强度与配平能力,左右变弯度技术的减阻收益并影响舵面偏转角度。相比于基准构型,增大后掠角会使得小升力系数下减阻收益增加、大升力系数下降低;而机翼位置靠前,则会使得不考虑力矩配平时减阻收益增加、考虑力矩配平时阻收益降低。工程上进行无尾飞行器后缘变弯度设计时,应综合考虑后缘变弯度的减阻收益以及变形所需的舵面偏转角度。

关键词：翼身融合布局变弯度机翼减阻配平特性优化设计

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Co-based MoF derived metal catalysts: from nano-level to atom-level

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Tungsten 2023年第2期5卷 201-216页

作者： Yuan-Xin Du Yan-Ting zhou Man-zhou zhu College of Materials Science and Engineering and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials Department of Chemistry and Center for Atomic Engineering of Advanced MaterialsKey Laboratory of Structure and Functional Regulation of Hybrid Materials of the Ministry of EducationAnhui UniversityHefei 230601China

Co-based metal-organic framework(MOF),a kind of porous crystal material composed of Co ions and organic linkers,is a common type of *** not only has the intrinsic properties of MOF,such as structural diversity,functional adjustability,and high surface area,but more importantly,it contains Co metal species,which are considered by many reports to be active catalytic centers for many ***,metal catalysts always received wide and sustained *** combi-nation of the two types of catalysts can enhance the catalytic performance and achieve the"1+1>2"*** this review,we mainly overview the synthesis methods of Co-based MOF-derived metal catalysts from nano-to atom-level and their applications in the catalysis field in recent years and put forward our own views and prospects for this research direction.

关键词： Metal-organic framework Cobalt Catalysis Nanoparticle Nanocluster Single-atom catalyst

A Variational ODE and its Application to an Elliptic Problem

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Acta Mathematicae Applicatae Sinica 2007年第4期23卷 685-696页

作者： Huan-song zhou Hong-bo zhu Wuhan Institute of Physics and Mathematics Chinese Academy of Sciences P.O. Box 71010 Wuhan 430071 China

In this paper, we consider the following ODE problem { （-u＂（τ）＋（N-1）（N-3）/4τ^2 ）u（τ）＋λu（τ）=f（τ,τ（1-N）/2 u）u（τ）,τ〉0, u∈H, N≥3. （P）,where f ∈ C（（0,＋∞） ×R,R）, f（τ,s） goes t... 详细信息

In this paper, we consider the following ODE problem { （-u＂（τ）＋（N-1）（N-3）/4τ^2 ）u（τ）＋λu（τ）=f（τ,τ（1-N）/2 u）u（τ）,τ〉0, u∈H, N≥3. （P）,where f ∈ C（（0,＋∞） ×R,R）, f（τ,s） goes to p（τ） and q（τ） uniformly in τ 〉 0 as s→ 0 and s→＋∞ respectively, 0≤ p（τ） ≤ q（τ） ∈L^∞（0,∞）. Moreover, for τ 〉 0, f（τ, s） is nondecreasing in s≥ 0. Some existence and non-existence of positive solutions to problem （P） are proved without assuming that p（τ） = 0 and q（τ） has a limit at infinity. Based on these results, we get the existence of positive solutions for an elliptic problem.

关键词： Elliptic equation asymptotically linear mountain pass theorem

An improved adaptive sampling and experiment design method for aerodynamic optimization

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Chinese Journal of Aeronautics 2015年第5期28卷 1391-1399页

作者： Huang Jiangtao Gao Zhenghong zhou zhu Zhao Ke Computational Aerodynamics Institute China Aerodynamics Research and Development Center National Key Laboratory of Aerodynamic Design and Research Northwestern Polytechnical University

Experiment design method is a key to construct a highly reliable surrogate model for numerical optimization in large-scale project. Within the method, the experimental design criterion directly affects the accuracy of the surrogate model and the optimization efficient. According to the shortcomings of the traditional experimental design, an improved adaptive sampling method is proposed in this paper. The surrogate model is firstly constructed by basic sparse samples. Then the supplementary sampling position is detected according to the specified criteria, which introduces the energy function and curvature sampling criteria based on radial basis function （RBF） network. Sampling detection criteria considers both the uniformity of sample distribution and the description of hypersurface curvature so as to significantly improve the prediction accuracy of the surrogate model with much less samples. For the surrogate model constructed with sparse samples, the sample uniformity is an important factor to the interpolation accuracy in the initial stage of adaptive sam- pling and surrogate model training. Along with the improvement of uniformity, the curvature description of objective function surface gradually becomes more important. In consideration of these issues, crowdness enhance function and root mean square error （RMSE） feedback function are introduced in C criterion expression. Thus, a new sampling method called RMSE and crowd- ness enhance （RCE） adaptive sampling is established. The validity of RCE adaptive sampling method is studied through typical test function firstly and then the airfoil/wing aerodynamic opti- mization design problem, which has high-dimensional design space. The results show that RCE adaptive sampling method not only reduces the requirement for the number of samples, but also effectively improves the prediction accuracy of the surrogate model, which has a broad prospects for applications.

关键词： Aerodynamic optimization Crowdness enhance function RBF model RCE adaptive sampfing RMSE feedback

Settlement Mode Analysis for An Immersed Tube Tunnel Considering A Nonuniform Foundation Under Tidal Load

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China Ocean Engineering 2022年第3期36卷 427-438页

作者： WANG Yan-ning zhou Huan-zhu WANG Le-chen Department of Civil and Environmental Engineering Shantou UniversityShantou 515063China State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and TechnologyXuzhou 221000China

Immersed tube tunnels are usually placed on soft soil layers in cross-sea tunnelling *** to the influence of stratum conditions and slope design,the longitudinal distribution of substratum layers is generally ***,the inhomogeneous deformation of the element-joint becomes the key factor in the failure of the immersed tube ***,a corresponding calculation method for joint deformation is needed to explore the deformation law of immersed tube *** constructing a three-section immersed tube tunnel analysis model(TTM),the relationship between the two types of deformation of the immersed tube tunnel structure in a longitudinal nonuniform soft soil foundation is described,and the deformation characteristics of the immersed structure under different boundaries are *** on the mechanical behaviour of the joint and foundation,according to the Timoshenko beam on the Vlasov two-parameter foundation(VTM),considering the tidal cyclic load during the operation and maintenance period,an example analysis is ***,the deformation characteristics and development trend of the immersed tube tunnel under the influence of different soil layers are *** obtained results have a certain guiding significance for the deformation calculation of immersed tube tunnels.

关键词： geotechnical engineering immersed tube tunnel theoretical analysis soft soil foundation element-soil interaction