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Optimal Harvesting and Stability for a Predator-prey System with Stage Structure

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Acta Mathematicae Applicatae Sinica 2002年第3期18卷 423-430页

作者： Xin-yu song, lan-sun ChenDepartment of Mathematics. Xinyang Teachers College, Henan 464000, ChinaInstitute of Mathematics, Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing100080, China Department of Mathematics Xinyang Teachers College Henan China Institute of Mathematics Academy of Mathematics and System Sciences Chinese Academy of Sciences Beijing China

The dynamics of a predator-prey system, where prey population has two stages, an immature stage and a mature stage with harvesting, the growth of predator population is of Lotka-Volterra nature, are modelled by a system of retarded functional differential equations. We obtain conditions for global asymptotic stability of three nonnegative equilibria and a threshold of harvesting for the mature prey population. The effect of delay on the population at positive equilibrium and the optimal harvesting of the mature prey population are also considered.

关键词： Optimal harvesting stage structure predator-prey system global asymptotic stability

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长效中药微胶囊面料的开发

上海纺织科技 2017年第3期45卷 12-13,37页

作者：郁兰宋春常盐城工业职业技术学院江苏盐城224005 上海水星家用纺织品股份有限公司技术研发中心上海201401

针对彩色粘胶纤维和中药芳香粘胶纤维的特点,开发具有中药香味的彩色粘胶家纺面料。为了提升面料中药香味的持久性能,选择合适的中药微胶囊对面料进行整理。彩色中药微胶囊面料生产工艺环保,使用性能优良,具有缓慢释放中药成分和香味的... 详细信息

针对彩色粘胶纤维和中药芳香粘胶纤维的特点,开发具有中药香味的彩色粘胶家纺面料。为了提升面料中药香味的持久性能,选择合适的中药微胶囊对面料进行整理。彩色中药微胶囊面料生产工艺环保,使用性能优良,具有缓慢释放中药成分和香味的效果,有一定的保健作用。

关键词：粘胶纤维芳香粘胶纤维微胶囊中药

Overview of analysis,risk assessment and control of Fusarium mycotoxins in contaminated foods

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Science Foundation in China 2018年第1期26卷 67-74页

作者： WU AiBo LIU Na yu DianZhen TIAN Ye YANG yunXia HU DongQiang WANG lan yu song SIBS-UGENT-SJ TU Joint Laboratory of Mycotoxin Research Shanghai Institutes for Biological Sciences Chinese Academy of Sciences University of Chinese Academy of Sciences Shanghai 200000 China

In the past decade,Fusarium mycotoxins as main biological contaminants in foods have attracted increasing attention due to their agro-economic importance across the global food *** chemical structural diversities and occurance in a variety of foods make it chanllenging to simultaneously and efficiently extract them for further *** the other hand,although various analytical methods have been widely applied for on-site and in-lab tests for rapid screening and/or quantitative determination,risk assessment of Fusarium mycotoxins is hardly performed due to the unavailability of affordable mycotoxin standards,as well as the lack of data of dietary consumption and food ***,there is an increasing demand for effective control of mycotoxins regarding prevention,neutralization,clearance,detoxification approaches using physico-chemical and biological *** review summarizes advances in the analysis and control of Fusarium mycotoxins in contaminated foods,providing valuable insights and references for subsequent studies on development of analytical methodology,control strategies,as well as regulations of food safety made by policy-makers.

关键词： Food safety Mycotoxins Fusarium Analysis Control

Inspires effective alternatives to backpropagation:predictive coding helps understand and build learning

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Neural Regeneration Research 2025年第11期20卷 3215-3216页

作者： Zhenghua Xu Miao yu yuhang song School of Health Sciences and Biomedical Engineering Hebei University of TechnologyTianjinChina Department of Computer Science University of OxfordOxfordUK

Artificial neural networks are capable of machine learning by simulating the hiera rchical structure of the human *** enable learning by brain and machine,it is essential to accurately identify and correct the prediction errors,referred to as credit assignment(Lillicrap et al.,2020).It is critical to develop artificial intelligence by understanding how the brain deals with credit assignment in neuroscience.

关键词： assignment learning enable

TRIPLET combined with microwave ablation:A novel treatment for advanced hepatocellular carcinoma

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 10-12页

作者： Fei-yu Zhao Guo-Wei Si Nian-song Qian Department of Thoracic Oncology Respiratory and Critical Care MedicineThe Eighth Medical Center of People’s Liberation Army General HospitalBeijing 100853China Department of Gastroenterology Fourth Medical CentreGeneral Hospital of the People's Liberation ArmyBeijing 100142China Senior Department of Thoracic Oncology Respiratory and Critical Care MedicineThe Eighth Medical Center of People’s Liberation Army General HospitalBeijing 100091China

This editorial comments on a study by Zuo et *** focus is on the efficacy of he-patic arterial infusion chemotherapy combined with camrelizumab and apatinib(the TRIPLET regimen),alongside microwave ablation therapy,in treating advanced hepatocellular carcinoma(HCC).The potential application of this combination therapy for patients with advanced HCC is evaluated.

关键词： Microwave ablation Hepatic arterial infusion chemotherapy Apatinib Camrelizumab Hepatocellular carcinoma

VIBRATIONAL SPECTRA AND STRUCTURE OF POLYNUCLEAR COPPERlanTHANOID MIXED METAL CARBOXYLATE COMPLEXES

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福建分析测试 1998年第4期7卷 929-932页

作者： Zheng yu,lan Anjian,song Lin,Mao Jianggao,Huang Jinshun (State Key Laboratory of Structural Chemstry,Fujian Institute of Research on the Structure of Matter,Academia Sinica,Fuzhou 350002)

Five complexes of copper and lanthanide series containing iminodiacetic group Hgands have been synthesized and investigated. The structures of three compounds have been determined by X-ray single crystal diffraction. ... 详细信息

关键词： Vibrational Spectra Polynuclear Copper-lanthanoid Complexes

Effects of Shenqi Xiangyi granules in advanced gastric cancer chemotherapy

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 169-175页

作者： Xiao-Jing Shi yu song Xue-Xue Liang Ting Chen Huang-yu Hao Xue Han Ya-Nan Chen Department of Oncology Zhangjiagang First People's HospitalSuzhou 215600Jiangsu ProvinceChina

BACKGROUND Owing to the absence of specific symptoms in early-stage gastric cancer,most patients are diagnosed at intermediate or advanced *** a result,treatment often shifts from surgery to other therapies,with chemotherapy and targeted therapies being the primary options for advanced gastric cancer treatment.A total of 116 patients with advanced gastric cancer,admitted from January 2021 to December 2023,were selected and divided into two groups of 58 each using the random number table *** control group received FOLFOX4 chemothe-rapy(oxaliplatin+calcium+folinate+5-fluorouracil)combined with intravenous *** observation group received the same treatment as the control group,supplemented by oral administration of Senqi Shiyiwei *** groups underwent treatment cycles of 3 weeks,with a minimum of two *** therapeutic efficacy,immune mechanisms,and treatment-related toxicity and side effects were compared between the *** objective remission rate in the observation group(55.17%)was higher than that of the control group(36.21%)(P0.05).CONCLUSION Adjuvant therapy with Shenqixian granules may enhance the efficacy of simudizumab combined with FOLFOX4 chemotherapy in advanced gastric cancer and the immune function by increasing immune cell counts,making it a valuable option in clinical treatment.

关键词： Sindilizumab FOLFOX4 chemotherapy Advanced gastric cancer Ginseng Qi Xiangyi granule Clinic treatment

维生素D3对自然流产模型小鼠胚胎丢失率及外周血免疫细胞的影响

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解剖学报 2017年第5期48卷 595-599页

作者：徐慧王玉兰宋晓晖黄娟华中科技大学同济医学院附属武汉儿童医院(武汉市妇幼保健院)妇产科武汉430014 武汉市中心医院妇产科武汉430014 华中科技大学同济医学院附属武汉儿童医院(武汉市妇幼保健院)病理科武汉430014

目的探讨维生素D3(VitD_3)对自然流产模型小鼠胚胎丢失率及外周血免疫细胞的影响。方法采用CBA/J×BALB/c建立正常妊娠小鼠模型,采用CBA/J×DBA/2建立自然流产小鼠模型,实验动物分5组:正常组、自然流产组、VitD_3低剂量组、中剂量组和... 详细信息

目的探讨维生素D3(VitD_3)对自然流产模型小鼠胚胎丢失率及外周血免疫细胞的影响。方法采用CBA/J×BALB/c建立正常妊娠小鼠模型,采用CBA/J×DBA/2建立自然流产小鼠模型,实验动物分5组:正常组、自然流产组、VitD_3低剂量组、中剂量组和高剂量组,每组15只。VitD_3各组自妊娠第1天开始腹腔注射VitD_3溶液,单次VitD_3给药剂量分别为1μg、4μg、16μg。记录和观察各组小鼠胚胎丢失情况,检测各组血清调节性T细胞(Treg)细胞因子:白细胞介素-10(IL-10),辅助性T细胞17(Th17)细胞因子:白细胞介素-17A(IL-17A)以及各组外周血Treg、Th17。结果与正常组相比,自然流产组胚胎丢失率显著升高(χ~2=16.045,P<0.05);与自然流产组比较,VitD_3低剂量组、中剂量组和高剂量组胚胎丢失率显著降低(χ~2=5.881、13.704、15.663,P<0.05)。与正常组相比,自然流产组Treg、IL-10、Treg/Th17、IL-10/IL-17A显著降低,Th17、IL-17A显著升高,差异均有统计学意义(P<0.05);与自然流产组比较,VitD_3低剂量组、中剂量组和高剂量组Treg、IL-10、Treg/Th17、IL-10/IL-17A显著升高,Th17、IL-17A显著降低,差异均有统计学意义(P<0.05)。结论 VitD_3能够降低自然流产模型小鼠胚胎丢失率,可能与调节Treg/Th17平衡有关。

关键词：维生素D3 自然流产胚胎丢失调节性T细胞/辅助性T细胞17 流式细胞术小鼠

Preparation and characterization of HMX/NH₂-GO composite with enhanced thermal safety and desensitization

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