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农村预防接种存在的主要问题及解决途径

中国卫生事业管理 2006年第1期22卷 48-49页

作者：何明彬湖北宜昌市夷陵区卫生局 443100

预防接种是农村公共卫生工作的重要组成部分。今年国务院颁布施行的《疫苗流通和预防接种管理条例》(下称条例),对依法加强疫苗流通和预防接种的管理、预防、控制传染病的发生、流行。保障人体健康和公共卫生具有重要意义。但当前农村... 详细信息

预防接种是农村公共卫生工作的重要组成部分。今年国务院颁布施行的《疫苗流通和预防接种管理条例》(下称条例),对依法加强疫苗流通和预防接种的管理、预防、控制传染病的发生、流行。保障人体健康和公共卫生具有重要意义。但当前农村预防接种的工作实际与条例规定还存在一定的差距和问题,值得探讨、改进和规范。[第一段]

关键词：预防接种农村公共卫生工作管理条例人体健康条例规定国务院传染病流通疫苗

数控机床切削控制能力对机械加工精度的影响分析

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现代制造技术与装备 2024年第3期60卷 208-211页

作者：贾清娟贺明彬江苏省射阳中等专业学校盐城224300

数控机床是现代制造业中广泛应用的重要设备之一,具有高效、精确、灵活等优点,在机械加工领域发挥着关键性作用。数控机床的切削控制能力和机械加工精度具有密不可分的联系,为进一步提高数控机床机械加工精度,从切削速度、走刀量、切线... 详细信息

数控机床是现代制造业中广泛应用的重要设备之一,具有高效、精确、灵活等优点,在机械加工领域发挥着关键性作用。数控机床的切削控制能力和机械加工精度具有密不可分的联系,为进一步提高数控机床机械加工精度,从切削速度、走刀量、切线深度等方面分析对机械加工精度的影响,提出加强数控机床切削控制,提高机械加工精度的具体措施,以期为相关工作人员提供借鉴,进而提高机械加工质量。

关键词：数控机床切削控制能力机械加工精度

双(2-柠康酰亚胺苯基)二硫化物对天然橡胶性能的影响

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橡胶工业 2024年第1期71卷 3-10页

作者：何铭彬邹立经陈朝晖黄学智吴再生林强华南理工大学材料科学与工程学院广东广州510641 江苏锐巴新材料科技有限公司江苏连云港222200

采用双(2-柠康酰亚胺苯基)二硫化物(BCoPD)作为天然橡胶(NR)的多功能硫化助剂,通过机械共混制备BCoPD/NR复合材料,探讨BCoPD用量和复合材料制备方法对BCoPD/NR复合材料的门尼粘度、Payne效应、硫化特性、交联键分布、物理性能和动态力... 详细信息

采用双(2-柠康酰亚胺苯基)二硫化物(BCoPD)作为天然橡胶(NR)的多功能硫化助剂,通过机械共混制备BCoPD/NR复合材料,探讨BCoPD用量和复合材料制备方法对BCoPD/NR复合材料的门尼粘度、Payne效应、硫化特性、交联键分布、物理性能和动态力学性能的影响。结果表明:采用在生胶塑解过程中加入BCoPD的BCoPD/NR复合材料制备方法,加入0.5份BCoPD使得复合材料的门尼粘度下降22.2%,60 min时的抗硫化返原率减小3%,多硫键比例增大3%,物理性能小幅下降,抗湿滑性能小幅提高;采用在加硫化体系时加入BCoPD的BCoPD/NR复合材料制备方法,加入1份BCoPD使得复合材料60 min时的抗硫化返原率下降11.9%,多硫键比例增大4%,物理性能有所提高,滚动阻力小幅下降。

关键词：天然橡胶双(2-柠康酰亚胺苯基)二硫化物塑解多硫键抗硫化返原性能

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抗硫化返原剂的合成与应用

弹性体 2022年第2期32卷 67-71页

作者：何铭彬黄若铭陈朝晖黄学智吴再生华南理工大学材料科学与工程学院教育部重点实验室广东广州510641 连云港锐巴新材料科技有限公司江苏连云港222200

参考二元促进剂体系的设计,合成抗硫化返原剂O,O-二丁基二硫代磷酸二硫化物(TBuPD)、1,6-双(二丁基二硫代磷酸)己烷(DBPH)、1,6-双(二苄基二硫代氨基甲酰)己烷(DBTH),探究其对天然橡胶的硫化性能、交联结构和力学性能的影响。结果表明,D... 详细信息

参考二元促进剂体系的设计,合成抗硫化返原剂O,O-二丁基二硫代磷酸二硫化物(TBuPD)、1,6-双(二丁基二硫代磷酸)己烷(DBPH)、1,6-双(二苄基二硫代氨基甲酰)己烷(DBTH),探究其对天然橡胶的硫化性能、交联结构和力学性能的影响。结果表明,DBTH、TBuPD和DBPH的加入使混炼胶在150℃下硫化60 min后的硫化返原率从8.2%降低到3.8%以下;硫化胶在长时间的硫化后均有良好的力学性能保持率;硫化胶在长时间的硫化后滚动阻力降低。

关键词：抗硫化返原剂 NR 硫化返原

二水合六亚甲基-1,6-二硫代硫酸二钠盐对天然橡胶-镀铜钢丝黏合性能的影响

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弹性体 2023年第2期33卷 77-82页

作者：邹立经黄学智陈朝晖何铭彬覃荆鹏林强华南理工大学材料科学与工程学院教育部重点实验室广东广州510640 江苏锐巴新材料科技有限公司江苏连云港222200

研究了二水合六亚甲基-1,6-二硫代硫酸二钠盐(HTS)用量对天然橡胶(NR)-镀铜钢丝黏合胶料硫化性能、力学性能黏合性能的影响。结果表明,HTS的加入减少了胶料的焦烧时间,随着HTS用量增加,硫化胶的表观交联密度呈现先上升后下降的趋势,力... 详细信息

研究了二水合六亚甲基-1,6-二硫代硫酸二钠盐(HTS)用量对天然橡胶(NR)-镀铜钢丝黏合胶料硫化性能、力学性能黏合性能的影响。结果表明,HTS的加入减少了胶料的焦烧时间,随着HTS用量增加,硫化胶的表观交联密度呈现先上升后下降的趋势,力学性能也表现出相近的变化规律;HTS可以改善NR-镀铜钢丝黏合界面强度及橡胶本体强度,当HTS的用量为2份时,黏合性能最佳。

关键词：二水合六亚甲基-1,6-二硫代硫酸二钠盐天然橡胶镀铜钢丝黏合性能

Predictions of soil and nutrient losses using a modified SWAT model in a large hilly-gully watershed of the Chinese Loess Plateau

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International Soil and Water Conservation Research 2021年第2期9卷 291-304页

作者： Wenhai Shi mingbin Huang The State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water ConservationNorthwest A&F UniversityYanglingShaanxi Province712100China School of Water and Environment Chang’an UniversityXian710054China CAS Center for Excellence in Quaternary Science and Global Change XianShaanxi710061China University of Chinese Academy of Sciences Beijing100049China

Hydrological models are effective tools for assessing the effects of soil and nutrient losses on land ***(Soil and Water Assessment Tool)model is widely used to simulate soil and nutrient losses caused by various management ***,its performance of predicting nutrient loss has not been assessed adequately on the Loess *** study proposed a modified SWAT model by incorporating the modified Soil Conservation Service curve number method,the storm-based Chinese soil loss equation and the nutrient loss *** observed daily data of runoff and sediment over 16 years and the monthly soluble phosphorus(P)and nitrate losses over 9 years and 4 years,respectively at the outlet of the upper Beiluo river(UBR)basin were used to assess the model *** sensitivity and uncertainty analyses of parameters to runoff,sediment,soluble P and nitrate in the modified SWAT were *** findings during calibration and validation showed that the modified SWAT was highly accurate in terms of model efficiency(calibration:0.83,0.83,0.48,and 0.49;validation:0.58,0.57,0.53,and 0.65)for runoff,sediment,soluble P loss and nitrate loss,*** model efficiency indicated that the modified SWAT could accurately predict soil and nutrient losses at the river basin scale for the Loess ***,the temporal variations from month to year and the spatial variations at the sub-basin scale for soil loss and the total N and P losses were analysed using the data simulated by the modified *** results indicated that the critical loss period occurred in July and August,and the Grain for Green project significantly affected the hydrological behaviour and reduced the soil and nutrient losses in the UBR basin.

关键词： Sediment Runoff Total N Total P

Spatial confinement of copper single atoms into covalent triazinebased frameworks for highly efficient and selective photocatalytic CO_(2)reduction

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Nano Research 2022年第9期15卷 8001-8009页

作者： Guocheng Huang Qing Niu Yuxin he Jinjin Tian mingbin Gao Chaoyang Li Ning An Jinhong Bi Jiangwei Zhang Department of Environmental Science and Engineering Fuzhou UniversityFuzhou 350108China Advanced Chemical Engineering and Energy Materials Research Center China University of Petroleum(East China)Qingdao 266580China State Key Laboratory of Photocatalysis on Energy and Environment Fuzhou UniversityFuzhou 350108China National Engineering Laboratory for Methanol to Olefins Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Anhui Chuangpu Instrument Technology Co. LTD.Hefei 230088China

Converting CO_(2)into carbonaceous fuels via photocatalysis represents an appealing strategy to simultaneously alleviate the energy crisis and associated environmental problems,yet designing with high photoreduction activity catalysts remains a compelling ***,combining the merits of highly porous structure and maximum atomic efficiency,we rationally constructed covalent triazine-based frameworks(CTFs)anchoring copper single atoms(Cu-SA/CTF)photocatalysts for efficient CO_(2)*** Cu single atoms were visualized by high-angle annular dark-field scanning transmission electron microscopy(HAADF-STEM)images and coordination structure of Cu-N-C2 sites was revealed by extended X-ray absorption fine structure(EXAFS)*** as-prepared Cu-SA/CTF photocatalysts exhibited superior photocatalytic CO_(2)conversion to CH4 performance associated with a high selectivity of 98.31%.Significantly,the introduction of Cu single atoms endowed the CuSA/CTF catalysts with increased CO_(2)adsorption capacity,strengthened visible light responsive ability,and improved the photogenerated carriers separation efficiency,thus enhancing the photocatalytic *** work provides useful guidelines for designing robust visible light responsive photoreduction CO_(2)catalysts on the atomic scale.

关键词： covalent triazine-based frameworks Cu single atoms photocatalytic CO_(2)reduction visible light selectivity

Ladder-Type Thienoacenaphthopyrazine-Based Molecules:Synthesis,Properties,and Application to Construct High-Performance Polymer for Organic Solar Cells

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CCS Chemistry 2023年第6期5卷 1318-1331页

作者： Pengwei Han Man Lin Qiuju Jiang Haijun Ning mingbin Su Li Dang Feng he Qinghe Wu Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Department of ChemistryShantou UniversityShantouGuangdong Department of Chemistry Shenzhen Grubbs InstituteSouthern University of Science and TechnologyShenzhen

We present a new design strategy to synthesize ladder-type thienoacenaphthopyrazine(TAP)-based monomers through two different coupling reactions from starting material 5,6-dibromoacenaphthylene-1,*** bringing varous electron-deficient groups together(such as five-membered aromatic rings,pyrazine,fluorine,and thiadiazols),this new family of molecules exhibits good stability in ambient conditions and easily tunes the electronic,photophysical and film-forming properties of *** unique molecular shape with its extendedπ-conjugated backbone perpendicular to the polymer chain,offers a remarkable platform for the development of a semiconducting polymer with rare *** planar and enlarged conjugated backbone enables TAP-based copolymers PTAP1 and PTAP2 to exhibit distinguishing solubility properties that are different from small-molecule-based polymers,indicating the advantages of novel ladder-type *** insolubility in chloroform supports orthogonal solvent processing to fabricate layer-by-layer organic solar cells(LBL-OSCs).Owing to its shorterπ–πstacking distance,higher hole mobility,and more favorable phase separation caused bymultifluorine substitution,polymer PTAP1-based LBL-OSC exhibits the highest efficiency of 17.14%by using Y6-BO as the electron acceptor while the efficiency for the PTAP2-based device is 14.20%.This high efficiency indicates the tremendous potential of these novel building units.

关键词： ladder-type monomer thienoacenaphthopyrazine polymer donor organic solar cell

Estimating the optimal vegetation coverage for the dominant tree and shrub species over China's northwest drylands

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Science China Earth Sciences 2024年第5期67卷 1500-1517页

作者： Zhongdian ZHANG Xiaoxu JIA Ping ZHU mingbin HUANG Lidong REN Ming’an SHAO School of Geographic Sciences Xinyang Normal UniversityXinyang 464000China Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100190China Yellow River Delta Modern Agricultural Engineering Laboratory Chinese Academy of SciencesBeijing 100101China State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water ConservationNorthwest A&F UniversityYangling 712100China

Anthropogenic revegetation is an effective way to control soil erosion and restore degraded ecosystems in China's northwest drylands(NWD).However,excessive vegetation cover expansion has long been known to increase evapotranspiration,leading to reduced local water availability,which can in turn threaten the health and services of restored *** the optimal vegetation coverage(OVC)is critical for balancing the trade-off between plant growth and water consumption in water-stressed areas,yet quantitative assessments over the entire NWD are still *** this study,a modified Biome BioGeochemical Cycles(Biome-BGC)model was used to simulate the long-term(1961–2020)dynamics of actual evapotranspiration(ET_(a)),net primary productivity(NPP),and leaf area index(LAI)for the dominant non-native tree(*** and ***)and shrub(*** and ***)species at 246 meteorological sites over *** modified model incorporated the Richards equation to simulate transient unsaturated water flow in a multilayer soil module,and both soil and eco-physiological parameters required by the model were validated using field-observed ETadata for each *** distributions of OVC(given by the mean maximum LAI,LAI_(max))for the dominant species were determined within three hydrogeomorphic sub-areas(i.e.,the loess hilly-gully sub-area,the windy and sandy sub-area,and the desert sub-area).The modified Biome-BGC model performed well in terms of simulating ET_(a) dynamics for the four plant *** distributions of mean ET_a,NPP,and LAI_(max)generally exhibited patterns similar to mean annual precipitation(MAP).In the loess hilly-gully sub-area(MAP:210 to 710 mm),the OVC respectively ranged from 1.7 to 2.9 and 0.8 to 2.9 for *** and *** the windy and sandy sub-area(MAP:135 to 500 mm),the OVC ranged from 0.3 to 3.3,0.5 to 2.6 and 0.6 to 2.1for ***,*** and ***,*** the desert sub-

关键词： Optimal vegetation coverage Water balance Leaf area index Biome-BGC model Dryland