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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第6期12卷 507-514页

作者： mi LIN Wei-feng LV Ling-ling sun Department of Information Science and Electronic Engineering Zhejiang University Hangzhou 310027 China School of Electronics and lnformation Hangzhou Dianzi University Hangzhou 310018 China

The problems existing in the binary logic system and the advantages of multiple-valued logic (MVL) are introduced. A literal circuit with three-track-output structure is created based on resonant tunneling diodes (RTDs) and it has the most basic memory function. A ternary RTD D flip-flop with pre-set and pre-reset functions is also designed, the key module of which is the RTD literal circuit. Two types of output structure of the ternary RTD D flip-flop are optional: one is three-track and the other is single-track; these two structures can be transformed conveniently by merely adding tri-valued RTD NAND, NOR, and inverter units after the three-track output. The design is verified by simulation. Ternary flip-flop consists of an RTD literal circuit and it not only is easy to understand and implement but also provides a solution for the algebraic interface between the multiple-valued logic and the binary logic. The method can also be used for design of other types of multiple-valued RTD flip-flop circuits.

关键词： Resonant tunneling diode (RTD) Ternary logic Literal circuit D flip-flop

Compressive failure analysis of unidirectional carbon/epoxy composite based on micro-mechanical models

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Chinese Journal of Aeronautics 2017年第6期30卷 1907-1918页

作者： Wei sun Zhidong GUAN Zengshan LI mi ZHANG Yongjie HUANG School of Aeronautic Science and Engineering Beihang University Beijing 100083 China

A 2D micro-mechanical model was proposed to study the compressive failure of Uni Directional（UD） carbon/epoxy composite. Considering the initial imperfection and strength distribution of the fiber, the plasticity and ductile damage of the matrix, the failure of T300/914 UD composite under longitudinal compression and in-plane combined loads was simulated by this model. Simulation results show that the longitudinal compressive failure of the UD composite is caused by the plastic yielding of the matrix in kink band, and the fiber initial imperfection is the main reason for it. Under in-plane combined loads, the stress state of the matrix in kink band is changed, which affects the longitudinal compressive failure modes and strength of UD *** failure envelope of r_1–s_（12） and r_1–r_2 are obtained by the micro-mechanical model. Meanwhile,the compressive failure mechanism of the UD composite is analyzed. Numerical results agree well with the experimental data, which verifies the validity of the micro-mechanical model.

关键词： micro-mechanical model Unidirectional composite Initial imperfection Matrix plasticity Ductile damage Kink band

天山北麓中段绿洲带高砷地下水中砷的迁移转化规律

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地球科学 2024年第1期49卷 253-270页

作者：雷米周金龙周殷竹孙英韩双宝刘江涛鲁涵白凡闫志雲新疆农业大学水利与土木工程学院新疆乌鲁木齐830052 新疆水文水资源工程技术研究中心新疆乌鲁木齐830052 新疆水利工程安全与水灾害防治重点实验室新疆乌鲁木齐830052 中国地质调查局水文地质环境地质调查中心河北保定071051

准噶尔盆地是典型高砷地下水分布的内陆盆地,地下水作为盆地重要饮用水源,区域供水安全存在风险,高砷地下水迁移转化规律有待进一步查明.以天山北麓中段绿洲带为研究区,采用半变异函数模型和UNmiX源解析模型分析该区地下水砷的分布、地... 详细信息

准噶尔盆地是典型高砷地下水分布的内陆盆地,地下水作为盆地重要饮用水源,区域供水安全存在风险,高砷地下水迁移转化规律有待进一步查明.以天山北麓中段绿洲带为研究区,采用半变异函数模型和UNmiX源解析模型分析该区地下水砷的分布、地下水化学组分源贡献;结合地质条件、赋存环境与水文地球化学作用剖析典型剖面高砷地下水中砷的迁移转化与富集影响因素.结果表明:研究区地下水整体为弱碱性、偏还原环境的淡水,As含量在ND~887.0μg·L^(-1)之间,平均值为11.2μg·L^(-1),ρ(As)>10μg·L^(-1)的高砷地下水水化学类型以HCO_(3)·SO_(4)·Cl-Na(HSL-N型)和HCO_(3)·SO_(4)-Na(Na·Ca)型(HS-N(NC)型)为主.单一结构潜水、承压水区潜水、承压水中高砷地下水占比分别为0.4%、6.4%、18.6%,高砷地下水主要富集于冲积平原深度100~300 m的承压含水层中.原生矿物源、岩盐矿物源、土壤输入-人为排放源、硫酸-碳酸岩盐矿物源和环境影响源对地下水水化学组分贡献率分别为11.3%、21.1%、23.1%、23.4%和21.1%.25组典型剖面地下水样中,24组地下水砷形态为As(V)(占取样点的96.0%).沿着地下水流向,从山前倾斜平原到冲积平原,地下水总As含量呈先增大后减小的变化趋势.地下水砷富集不仅受到赋存环境中pH、Eh、HCO_(3)^(-)和PO_(4)^(3-)等水化学指标的影响,还与地质条件、水文地质条件、有机质降解和溶滤作用等因素有关.

关键词：高砷地下水空间分布源解析迁移转化水文地质

文化育人崇行尚美——德化县城关幼儿园“行美”教育背景下的校园文化建构与实施路径探索

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福建教育学院学报 2024年第9期25卷 125-128页

作者：郑少密孙艳红德化县城关幼儿园福建德化362500

在陶行知教育思想指引下,幼儿园融合办园文化底蕴进行顶层设计,并持续挖掘文化内涵,诠释文化理念,锻造价值体系,构建文化认同,遵循“自下而上”的校园文化构建原则;以园标设计、环境创设、特色活动为载体,促进校园文化形象化、立体化、... 详细信息

在陶行知教育思想指引下,幼儿园融合办园文化底蕴进行顶层设计,并持续挖掘文化内涵,诠释文化理念,锻造价值体系,构建文化认同,遵循“自下而上”的校园文化构建原则;以园标设计、环境创设、特色活动为载体,促进校园文化形象化、立体化、仪式化,形成“自上而下”的校园文化实施路径。两条路径相互结合,纵深开展“行美”教育特色校园文化建设,形成“崇行尚美”的校园文化特色。

关键词： “行美”教育校园文化文化建构实施路径

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基于PID控制的恒压模式压接技术研究

航天标准化 2024年第1期 53-57页

作者：武磊刘蜜刘林琳孙赫贵州航天电器股份有限公司贵阳550000 上海威克鲍尔通信科技有限公司上海200436

压接是指在自然环境下,采用压接工具或设备,使一种导线线芯与被连接连接器接触件发生机械挤压塑性变形而形成金属组织一体化的一种工艺方法。传统的导线与接触件的压接采用的是无压接压力控制的压接模式,仅在压接完成后通过金相检测设... 详细信息

压接是指在自然环境下,采用压接工具或设备,使一种导线线芯与被连接连接器接触件发生机械挤压塑性变形而形成金属组织一体化的一种工艺方法。传统的导线与接触件的压接采用的是无压接压力控制的压接模式,仅在压接完成后通过金相检测设备及拉力测试设备检查压接是否合格,该压接模式的应用有一定的局限性。在此基础上,设计了一套基于比例、积分、微分(PID)控制的恒压力压接的控制系统,该系统通过样机上验证,以400N压力为目标压力,压接了20个产品,压力的最大值为400.5N,最大偏差仅为0.125%,且压接的全部产品晶相检查均满足要求,证明基于PID控制的恒压力控制系统能有效的控制压接时的压力,提升产品的合格率,降低质量异常的风险。

关键词： PID 压接接触件导线

Successful treatment of breast metastasis from primary transverse colon cancer:A case report

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World Journal of Clinical Cases 2023年第11期11卷 2559-2566页

作者： Xin Jiao Fang-Zhou Xing mi-mi Zhai Peng sun Department of Gastrointestinal Surgery Affiliated Hospital of Weifang Medical UniversityWeifang 261041Shandong ProvinceChina Department of Digestive System Weifang People’s HospitalWeifang 261041Shandong ProvinceChina

BACKGROUND The incidence of colon cancer is increasing *** for colon cancer include surgery and surgery combined with chemotherapy and radiotherapy,but the median survival rate is still *** cancer most commonly metastasizes to the lymph nodes,lungs,liver,peritoneum,and brain,but breast metastasis is *** is no agreement on its *** SUMMARY A 23-year-old woman was admitted to our hospital for further treatment with a history of acute abdominal pain,nausea,and *** physical examination and computed tomography scan revealed an abdominal *** colectomy was successfully *** examination revealed that the tumor was a mucosecretory adenocarcinoma with signet ring *** patient inadvertently found a mass in the outer upper quadrant of the right breast after four cycles of XELOX chemotherapy[oxaliplatin 130 mg/m^(2),d1,intravenous(iv)drip for 2 h;capecitabine 1000 mg/m^(2),po,bid,d1–d14].After discussion with the patient,we performed a lumpectomy and frozen *** latter revealed that the breast tumor was intestinal *** testing showed wild-type RAS and *** we replaced the original chemotherapy with FOLFIRI[irinotecan 180 mg/m^(2),d1,iv drip for 3–90 min;leucovorin 400 mg/m^(2),d1,iv drip for 2 h;5-fluorouracil(5-FU)400 mg/m^(2),d1 and 5-FU 1200 mg/(m^(2)d)×2 d,continuous iv drip for 46–48 h]+cetuximab(500 mg/m^(2),d1,iv drip for 2 h).Serum levels of tumor markers returned to normal after several treatment cycles,and there was no evidence of tumor recurrence or *** Breast metastasis from colon cancer is *** breast surgery should be avoided unless needed for *** combined with targeted therapy should be the first choice.

关键词： Colon cancer Breast metastasis Tumor markers FOLFIRI Cetuximab Prognosis Case report

前列腺癌患者与主要照顾者相依关系对积极感受的影响

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国际医药卫生导报 2024年第13期30卷 2253-2259页

作者：张燕糜远源孙丽雅许源江南大学附属医院泌尿外科无锡214000

目的基于主客体互倚模型(APIM)探讨前列腺癌患者与其主要照顾者相依关系对积极感受的影响。方法该研究属于前瞻性、单中心试验。选取江南大学附属医院2021年5月至2023年5月收治的133例前列腺癌患者及其主要照顾者为研究对象,前列腺癌患... 详细信息

目的基于主客体互倚模型(APIM)探讨前列腺癌患者与其主要照顾者相依关系对积极感受的影响。方法该研究属于前瞻性、单中心试验。选取江南大学附属医院2021年5月至2023年5月收治的133例前列腺癌患者及其主要照顾者为研究对象,前列腺癌患者均为男性,年龄49~90(70.52±12.65)岁;主要照顾者男42名,女91名,年龄22~79(62.56±10.45)岁。参考相依关系量表(MS)、积极感受量表(PAC)调查患者与主要照顾者的相依关系、积极感受,采用t检验统计分析前列腺癌患者与主要照顾者相依关系评分、积极感受评分差异;采用Pearson分析前列腺癌患者与主要照顾者相依关系、积极感受的相关性;采用线性混合模型APIM分析前列腺癌患者与主要照顾者相依关系对积极感受的影响。结果前列腺癌患者的相依关系中爱和感情维度评分、总分均高于主要照顾者[(4.45±0.77)分比(2.62±0.55)分、(15.75±2.88)分比(13.60±2.25)分],积极感受中自我肯定、生活展望评分以及总分均低于主要照顾者[(12.34±2.11)分比(13.28±2.59)分、(13.46±2.53)分比(15.30±2.95)分、(25.80±4.25)分比(28.58±3.43)分],差异均有统计学意义(t=22.30、6.78、3.25、5.46、5.87,均P<0.05);患者相依关系与主要照顾者相依关系、积极感受呈正相关(r=0.887、0.718,均P<0.001),患者积极感受与主要照顾者相依关系、积极感受呈正相关(r=0.590、0.527,均P<0.001);主体效应上,患者及其主要照顾者的相依关系可影响自身的积极感受(β=0.474、0.485,均P<0.05);客体效应上,患者及其主要照顾者的相依关系可影响对方的积极感受(β=0.356、0.265、0.344、0.315,均P<0.05)。结论前列腺癌患者与其主要照顾者之间的相依关系评分与自身和对方的积极感受评分呈正相关,且经APIM模型验证其相依关系可正向影响二者积极感受。

关键词：前列腺癌主客体互倚模型主要照顾者相依关系积极感受

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农田地膜使用信息监测系统设计与实现

中国农机化学报 2024年第8期45卷 302-307页

作者：徐靖孙池涛王鹏尹航米庆华柳平增山东农业大学信息科学与工程学院山东泰安271018 山东农业大学水利土木工程学院山东泰安271018 农业农村部农膜应用重点实验室山东泰安271018

开展农田地膜信息监测对科学使用地膜和治理农田白色污染具有重要意义。针对山东省农田地膜使用监测管理情况,利用信息技术与机器学习方法等手段,提出基于Springboot+Mysql+Mybatis为系统架构的山东省地膜监测系统研究模式,监测系统的... 详细信息

开展农田地膜信息监测对科学使用地膜和治理农田白色污染具有重要意义。针对山东省农田地膜使用监测管理情况,利用信息技术与机器学习方法等手段,提出基于Springboot+Mysql+Mybatis为系统架构的山东省地膜监测系统研究模式,监测系统的功能涵盖地膜使用监测网络的全部内容,包括地膜生产企业、地膜生产使用、回收与残留等全产业链关键业务数据报表的接收、上报、数据审核校验。同时实现数据综合分析,上报情况的统计,生产企业、监测点、审核单位和质量控制单位的基础信息管理,依托地膜使用监测上报数据,利用R语言对残留量与各类因子进行相关性分析以及方差分析,进一步精准农田地膜残留量预测模型设计。以2021年山东省农田地膜残留监测信息为依据,试运行系统,覆盖全省16地市122县,可实现地膜全产业链监测与信息共享,为地膜科学使用与管理提供技术支撑。

关键词：地膜残留功能设计数据分析数据上报污染防控

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COVID-19 in gastroenterology and hepatology:Lessons learned and questions to be answered

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World Journal of Clinical Cases 2021年第17期9卷 4199-4209页

作者： Shao Liu mi-mi Tang Jie Du Zhi-Cheng Gong Shu-Sen sun Department of Pharmacy Xiangya HospitalCentral South UniversityChangsha 410008Hunan ProvinceChina Department of Pharmacy The Hunan Institute of Pharmacy Practice and Clinical ResearchChangsha 410008Hunan ProvinceChina Institute of Hospital Pharmacy Central South UniversityChangsha 410008Hunan ProvinceChina Department of Pharmacy Practice College of Pharmacy and Health SciencesWestern New England UniversitySpringfieldMA 01119United States

BACKGROUND Although coronavirus disease 2019(COVID-19)presents primarily as a lower respiratory tract infection,increasing data suggests multiorgan,including the gastrointestinal(GI)tract and liver,involvement in patients who are infected by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).AIM To provide a comprehensive overview of COVID-19 in gastroenterology and *** Relevant studies on COVID-19 related to the study aim were undertaken through a literature search to synthesize the extracted *** We found that digestive symptoms and liver injury are not uncommon in patients with COVID-19 and varies in different *** most common GI symptoms reported are diarrhea,nausea,vomiting,and abdominal *** atypical GI symptoms,such as loss of smell and taste and GI bleeding,have also been reported along with the evolvement of *** chemistry abnormalities mainly include elevation of aspartate transferase,alanine transferase,and total *** is postulated to be related to the binding of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)virus to the angiotensin converting enzyme-2 receptor located on several different human *** Standardized criteria should be established for diagnosis and grading of the severity of GI symptoms in COVID-19 *** and hepatology in special populations,such as children and elderly,should be the focus of further *** long-term data regarding GI symptoms should not be overlooked.

关键词： COVID-19 SARS-CoV-2 Gastroenterology Hepatology Endoscopy Inflam-matory bowel disease

Facilitated Prediction of micropollutant Degradation via UV-AOPs in Various Waters by Combining Model Simulation and Portable Measurement

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Engineering 2024年第6期37卷 87-95页

作者： Yanyan Huang Mengkai Li Zhe sun Wentao Li James R.Bolton Zhimin Qiang Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Department of Civil and Environmental Engineering University of AlbertaEdmontonAB T6G 1H9Canada State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

The degradation of micropollutants in water via ultraviolet(UV)-based advanced oxidation processes(AOPs)is strongly dependent on the water *** reactive radicals(RRs)formed in UV-AOPs have different reaction selectivities toward water matrices and degradation efficiencies for target ***,process selection and optimization are *** study developed a facilitated prediction method for the photon fluence-based rate constant for micropollutant degradation(K′_(p,MP))in various UV-AOPs by combining model simulation with portable *** methods for measuring the scavenging capacities of the principal RRs(RRSCs)involved in UV-AOPs(i.e.,HO^(·),SO_(4)^(·-),and Cl^(·))using a mini-fluidic photoreaction system were *** simulation models consisted of photochemical,quantitative structure–activity relationship,and radical concentration steady-state approximation *** RRSCs were determined in eight test waters,and a higher RRSC was found to be associated with a more complex water ***,by taking sulfamethazine,caffeine,and carbamazepine as model micropollutants,the k′_(p,MP) values in various UV-AOPs were predicted and further verified experimentally.A lower k′_(p,MP) was found to be associated with a higher RRSC for a stronger RR competition;for example,k′_(p,MP) values of 130.9 and 332.5 m^(2) einstein^(–1),respectively,were obtained for carbamazepine degradation by UV/H_(2)O_(2) in the raw water(RRSC=9.47×10^(4) s^(-1))and sand-filtered effluent(RRSC=2.87×10^(4) s^(-1))of a drinking water treatment *** developed method facilitates process selection and optimization for UV-AOPs,which is essential for increasing the efficiency and cost-effectiveness of water treatment.

关键词： UV-AOPs micropollutant degradation Reactive radicals Water matrix Model simulation