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基于模拟退火粒子群算法的配电网分布式储能布局规划研究

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电气应用 2024年第8期43卷 100-105页

作者：缪翼军康慨张云龙郑开琦施念龚琪湖北省电力规划设计研究院有限公司湖北武汉430040

储能系统可缓解大规模分布式新能源接入配电网所产生的不良影响,而储能系统在配电网中合理配置是其有效应用的前提。构建了一种考虑在配电网中全寿命周期成本的分布式储能布局规划模型,并以分布式储能接入配电网后安全稳定运行校核为约... 详细信息

储能系统可缓解大规模分布式新能源接入配电网所产生的不良影响,而储能系统在配电网中合理配置是其有效应用的前提。构建了一种考虑在配电网中全寿命周期成本的分布式储能布局规划模型,并以分布式储能接入配电网后安全稳定运行校核为约束条件,采用引入退火机制的粒子群算法对布局规划模型进行优化求解,提高算法迭代时寻找全局最优解的收敛速度和准确性。在IEEE 14节点配电系统上进行仿真分析,仿真结果表明该算法具有较好的收敛性和准确性,该规划方法可有效提高新能源发电就近消纳水平,可用于指导分布式储能在配电网中的规划布局。

关键词：模拟退火算法粒子群算法配电网分布式储能布局规划

Fundamentals and progress of the manifold method based on independent covers

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Science China(Technological Sciences) 2024年第4期67卷 966-991页

作者： SU HaiDong LIN ShaoZhong XIE Zhiqiang gong Yaqi qi YongFeng Material and Engineering Structure Department Yangtze River Scientific Research InstituteWuhan 430010China Research Center of Water Engineering Safety and Disaster Prevention of Ministry of Water Resources Wuhan 430010China

Aiming to solve mesh generation,computational stability,accuracy control,and other problems encountered with existing numerical methods,such as the finite element method and the finite volume method,a new numerical computational method for continuum mechanics,namely the manifold method based on independent covers(MMIC),is proposed based on the concept of mathematical manifolds,to form partitioned series solutions of partial differential *** partitions,the cover meshes have the characteristics of arbitrary shape,arbitrary connection,and arbitrary *** are expected to fundamentally solve the mesh generation problem and can also simulate the precise geometric boundaries of the CAD model and strictly impose boundary *** the selection of series solutions,local analytical solutions(such as series solutions at crack tips and series solutions in infinite domains)or proper forms of complete series can be used to reflect the local or global characteristics of the physical field to accelerate *** applications are presented.A new method of beam,plate,and shell analysis is *** deformation characteristics of beams,plates,and shells are simulated with polynomial series of suitable forms,and the analysis of curved beams and shells with accurate geometric representation is *** the static elastic analysis of two-dimensional structures,a mesh splitting algorithm is proposed,and h-p version adaptive analysis is carried out with error ***,automatic computation integrated with CAD is *** analysis is also attempted for the solution of differential equations of *** the one-dimensional convection-diffusion equation and Burgers equation,calculation results with high precision are obtained in strong convection and shock wave simulations,avoiding nonphysical *** solving the two-dimensional incompressible Navier-Stokes equation is also *** series solution formula is used to o

关键词： series solutions mesh generation adaptive analysis fixed meshes numerical manifold method

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Impact of heart failure on outcomes in patients with sepsis:A systematic review and meta-analysis

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World Journal of Clinical Cases 2023年第15期11卷 3511-3521页

作者： Ming-Yu Zhu Xiao-Kai Tang Yi Gao Jing-Jing Xu Yuan-qi gong Department of the Intensive Care Unit The Second Affiliated Hospital of Nanchang UniversityNanchang 330006Jiangxi ProvinceChina Department of the Orthopaedic The First Affiliated Hospital of Nanchang UniversityNanchang 330006Jiangxi ProvinceChina

BACKGROUND Heart failure(HF)often affects the progress of sepsis patients,although its impact on outcomes is inconsistent and *** To conduct a systematic review and meta-analysis of the impact of HF on mortality in patients with *** PubMed,Embase,Web of Science,and the Cochrane Library databases were searched to compare the outcomes of sepsis patients with HF.A random effect model was used to summarize the mortality data,and the odds ratio(OR)and 95%confidence interval(CI)were calculated as effect *** Among 18001 records retrieved in the literature search,35712 patients from 10 separate studies were *** results showed that sepsis patients with HF were associated with increased total mortality(OR=1.80,95%CI:1.34-2.43;I2=92.1%),with high heterogeneity between *** subgroup differences according to age,geographical location,and HF patient sample were *** did not increase the 1-year mortality of patients(OR=1.11,95%CI:0.75-1.62;I2=93.2%),and the mortality of patients with isolated right ventricular dysfunction(OR=2.32,95%CI:1.29-4.14;I2=91.5%)increased *** In patients with sepsis,HF is often associated with adverse outcomes and *** results call for more high-quality research and strategies to improve outcomes for sepsis patients with HF.

关键词： Heart failure Sepsis Septic shock Prognosis Meta-analysis

Joint Modeling of Failure Time Data with Transformation Model and Longitudinal Data When Covariates are Measured with Errors

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Acta Mathematicae Applicatae Sinica 2012年第4期28卷 663-672页

作者： Xi-ming CHENG qi gong School of Applied Science Beijing Information Science and Technology University Academy of Mathematics and Systems Science Chinese Academy of Sciences Department of Statistics University of Missouri

Semiparametric transformation models provide a class of flexible models for regression analysis of failure time data. Several authors have discussed them under different situations when covariates are time- independent （Chen et al., 2002; Cheng et al., 1995; Fine et al., 1998）. In this paper, we consider fitting these models to right-censored data when covariates are time-dependent longitudinal variables and, furthermore, may suffer measurement errors. For estimation, we investigate the maximum likelihood approach, and an EM algorithm is developed. Simulation results show that the proposed method is appropriate for practical application, and an illustrative example is provided.

关键词： EM algorithm linear random effects model maximum likelihood estimation measurement error

Regulating Oxygen Vacancy Defects in Heterogeneous NiO-CeO_(2)−δ Hollow Multi-shelled Structure for Boosting Oxygen Evolution Reaction

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Chemical Research in Chinese Universities 2024年第3期40卷 475-483页

作者： WANG Huan gong Guannan SUN Guohua qi Jian YU Ranbo WANG Dan Hebei Key Laboratory of Flexible Functionals Materials School of Materials Science and EngineeringHebei University of Science and TechnologyShijiazhuang 050000P.R.China Department of Physical Chemistry School of Metallurgical and Ecological EngineeringUniversity of Science&Technology BejingBeijing 100083P.R.China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190P.R.China

CeO_(2) with excellent oxygen storage-exchange capacity and NiO with excellent surface activity were used to construct a heterogeneous NiO-CeO_(2)−δhollow multi-shelled structure(HoMS)by spray *** turned out that as the proportion of CeO_(2) increases,the overpotential and Tafel slope of NiO-CeO_(2)−δHoMSs first decreased and then *** is mainly because the construction of the NiO-CeO_(2)−δHoMSs not only increases the specific surface area,but also introduces oxygen vacancy defects,thus improving the interface charge transfer capability of the materials and further improving the oxygen evolution reaction(OER)***,the increase of the calcination temperature will induce the decay of the OER performance of NiO-CeO_(2)−δHoMSs,which is mainly due to the decrease of the specific surface area,the reduction of oxygen vacancy defects,and the weakening of interface charge transfer ***,a series of heterogeneous composite HoMSs,such as Ni/Co,Mo/Ni,Al/Ni and Fe/Ni oxides was successfully constructed by spray drying,which enriched the diversity of HoMSs.

关键词： Heterogeneous composite structure Hollow multishelled structure Oxygen vacancy defect Oxygen evolution reaction

Airblast evolution initiated by Wangjiayan landslides in the M_(s)8.0 Wenchuan earthquake and its destructive capacity analysis

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China Geology 2024年第2期7卷 237-247页

作者： Yu-feng Wang qian-gong Cheng qi Zhu Department of Geological Engineering Southwest Jiaotong UniversityChengdu 610031China Sichuan Highway Planning SurveyDesign and Research Institute LtdChengdu 610041China

Airblasts,as one common phenomenon accompanied by rapid movements of landslides or rock/snow avalanches,commonly result in catastrophic damages and are attracting more and more scientific *** quantitatively analyze the intensity of airblast initiated by landslides,the Wangjiayan landslide,occurred in the Wenchuan earthquake,is selected here with the landslide propagation and airblast evolution being studied using FLUENT by introducing the Voellmy rheological *** results reveal that:(1)For the Wangjiayan landslide,its whole travelling duration is only 12 s with its maximum velocity reaching 36 m/s at t=10 s;(2)corresponding to the landslide propagation,the maximum velocity,28 m/s,of the airblast initiated by the landslide also appears at t=10 s with its maximum pressure reaching594.8 Pa,which is equivalent to violent storm;(3)under the attack of airblast,the load suffered by buildings in the airblast zone increases to 1300 Pa at t=9.4 s and sharply decreased to-7000 Pa as the rapid decrease of the velocity of the sliding mass at t=10 s,which is seriously unfavorable for buildings and might be the key reason for the destructive collapse of buildings in the airblast zone of the Wangjiayan landslide.

关键词： Landslide Voellmy rheological law 3D FLUENT simulation Airblast Intensity Building destructive collapse Wenchuan earthquake Geological hazards survey engineering

The acceptance of traditional Chinese medicine among patients with Parkinson's disease:A hospital survey

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Journal of Integrative Medicine 2024年第2期22卷 180-187页

作者： Peng Wang Jing Hong Zhu-qian Tang Bi-zhen gong Xiao-rong qi Han Jiang Bo Pan qi Chen Postgraduate School Medical School of Chinese People’s Liberation ArmyBeijing 100853China Senior Department of Traditional Chinese Medicine the Sixth Medical Center of PLA General HospitalBeijing 100853China Department of Integration of Chinese and Western Medicine School of Basic Medical SciencesPeking UniversityBeijing 100191China Department of Integrative Oncology the First Affiliated Hospital of Naval Medical UniversityShanghai 200433China School of Traditional Chinese Medicine Naval Medical UniversityShanghai 200433China School of Pharmacy Nanjing University of Chinese MedicineNanjing 210023Jiangsu ProvinceChina Department of Dermatology the First Clinical Medical CollegeAnhui University of Chinese MedicineHefei 230012Anhui ProvinceChina

Objective:The efficacy of medications for Parkinson’s disease(PD)tend to decline over time,which has a serious impact on patients’health and quality of *** some extent,traditional Chinese medicine(TCM)can resolve the distressing problem of ineffective dopaminergic medication in PD *** purpose of this study was to investigate the attitude,acceptance,and independent predictors of TCM in PD patients admitted to the outpatient department of a tertiary ***:A cross-sectional study of PD patients was conducted in the outpatient department of a large tertiary hospital in Beijing from March 2022 to June 2023.A self-report questionnaire was developed to investigate PD patients’attitudes and acceptance of TCM based on the *** logistic regression analyses were also performed to further clarify the independent predictors influencing patients’adoption of TCM ***:A total of 397 patients completed the questionnaire,of which 78.09%were willing to be treated with TCM and 21.91%indicated that they were not willing to use *** logistic regression analysis showed that several parameters were correlated with a patient’s willingness to include TCM in their therapeutic *** included education level of a bachelor’s degree(odds ratio[OR)=8.554;95%confidence interval[CI]:4.112–17.794;P<0.001,vs junior high school education),living in an urban setting(OR=8.022;95%CI:4.577–14.060;P<0.001,vs rural),having other underlying diseases(OR=5.126;95%CI:3.078–8.537;P<0.001,vs none),having previously used TCM(OR=3.083;95%CI:1.852–5.134;P<0.001,vs not used),believing that TCM therapy is safe(OR=3.530;95%CI:1.446–8.616;P=0.006,vs not thought),believing that TCM therapy is effective(OR=3.859;95%CI:1.482–10.047;P=0.006,vs not understood),and being willing to discuss ongoing TCM therapy with an attending physician(OR=62.468;95%CI:30.350–128.574;P<0.001,vs not informed).Conclusion:This study initially investigated the acceptance

关键词： Parkinson's disease Traditional Chinese medicine Cross-sectional study

Porcine enteric alphacoronavirus infection increases lipid droplet accumulation to facilitate the virus replication

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Journal of Integrative Agriculture 2024年第3期23卷 988-1005页

作者： qi Gao Yongzhi Feng Ting gong Dongdong Wu Xiaoyu Zheng Yizhuo Luo Yunlong Yang Zebu Song Lang gong Guihong Zhang Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control College of Veterinary MedicineSouth China Agricultural UniversityGuangzhou 510642China Maoming Branch Guangdong Laboratory for Lingnan Modern AgricultureMaoming 525000China Key Laboratory of Animal Vaccine Development Ministry of Agriculture and Rural AffairsGuangzhou 510000China Guangdong Laboratory for Lingnan Modern Agriculture Guangzhou 510642China

Coronaviruses are widely transmissible between humans and animals, causing diseases of varying severity. Porcine enteric alphacoronavirus(PEAV) is a newly-discovered pathogenic porcine enteric coronavirus in recent years, which causes watery diarrhea in newborn piglets. The host inflammatory responses to PEAV and its metabolic regulation mechanisms remain unclear, and no antiviral studies have been reported. Therefore, we investigated the pathogenic mechanism and antiviral drugs of PEAV. The transcriptomic analysis of PEAV-infected host cells revealed that PEAV could upregulate lipid metabolism pathways. In lipid metabolism, steady-state energy processes, which can be mediated by lipid droplets(LDs), are the main functions of organelles. LDs are also important in viral infection and inflammation. In infected cells, PEAV increased LD accumulation, upregulated NF-κB signaling, promoted the production of the inflammatory cytokines IL-1β and IL-8, and induced cell death. Inhibiting LD accumulation with a DGAT-1 inhibitor significantly inhibited PEAV replication, downregulated the NF-κB signaling pathway, reduced the production of IL-1β and IL-8, and inhibited cell death. The NF-κB signaling pathway inhibitor BAY11-7082 significantly inhibited LD accumulation and PEAV replication. Metformin hydrochloride also exerted anti-PEAV effects and significantly inhibited LD accumulation, downregulated the NF-κB signaling pathway, reduced the production of IL-1β and IL-8, and inhibited cell death. LD accumulation in the lipid metabolism pathway therefore plays an important role in the replication and pathogenesis of PEAV, and metformin hydrochloride inhibits LD accumulation and the inflammatory response to exert anti-PEAV activity and reducing pathological injury. These findings contribute new targets for developing treatments for PEAV infections.

关键词： porcine enteric alphacoronavirus NF-κB inflammatory pathway lipid droplet metformin hydrochloride

一株椪柑内生真菌的鉴定及其对青霉病的防治作用

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北方果树 2024年第1期 11-14页

作者：龚琪雯刘惠朱宇正陈梦洁周防震周志湖北民族大学生物与食品工程学院湖北恩施445000

从一枚外观完好的巴东椪柑果心中发现肉眼可见的内生真菌,分离、鉴定并研究其生防活性,以期为该内生真菌的开发与利用奠定基础。采用单孢分离法纯化内生真菌,根据科赫法则进行内生真菌的验证,经形态学观察和rDNA-ITS序列分析进行鉴定,... 详细信息

从一枚外观完好的巴东椪柑果心中发现肉眼可见的内生真菌,分离、鉴定并研究其生防活性,以期为该内生真菌的开发与利用奠定基础。采用单孢分离法纯化内生真菌,根据科赫法则进行内生真菌的验证,经形态学观察和rDNA-ITS序列分析进行鉴定,并通过平板对峙和活体接种试验研究其对柑橘青霉(***)的防治作用。结果表明,分离得到1株内生真菌BP-1,该菌与斯氏青霉(***)相似度达到99.46%。此外BP-1对***的离体拮抗活性不明显,但活体条件下能够显著降低由***引起的腐烂速度和腐烂率,且BP-1孢子悬液对椪柑青霉病的保护效果远高于其治疗效果。BP-1为***近缘种,其预防柑橘青霉病的主要机制可能是营养竞争和诱导宿主抗性。

关键词：椪柑内生真菌青霉病防治