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Radiative forcing due to dust aerosol over east Asia-north Pacific region during spring, 2001

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Chinese Science Bulletin 2004年第20期49卷 2212-2219页

作者： WANGHong SHIGuangyu AokiTeruo wangbiao ZHAOTianliang StateKeyLaboratoryofNumericalModelingforAtmosphericSciencesandGeophysicalFluidDynamics.InstituteofAtmosphericPhysics.ChineseAcademyofSciences Beijing100029China MeteorologicalResearchInstitute 1-1NagamineTsukubaIbaraki305-0052.Japan AirQualityResearchBranch MeteorologicalServiceofCanada.TorontoOntarioCanada

An optical model accounting for the East Asian dust is proposed as a result of theory calculation and compo-sition analysis of the aerosol samples collected in China de-sert during the international project, Studies on the Origin and Transport of Aeolian Dust and its Effects on Climate (ADEC). Study indicates that dust aerosols emitting from China deserts have smaller imaginary parts of refractive indices, therefore absorb less and scatter more solar radia-tion than the most dust optical models published so far. Fur-thermore, the forward fraction of scattering is less and the backscattering is stronger than those of the other models. The seasonal averaged radiative forcing in spring, 2001 over east Asia-north Pacific region is simulated employing the new dust optical model. The net forcing at the top of atmos-phere (TOA) is estimated as -0.943 W·m-2 for regional and seasonal mean, with shortwave and longwave contributions of -1.700 and 0.759 W·m-2, respectively. The surface net forcing is calculated to be -5.445 W·m-2, and made up of shortwave component of -6.250 W·m-2 and longwave component of +0.759 W·m-2. The distributions of TOA and surface net forcing over this region are also analyzed in this study.

关键词：辐射强度灰尘浮质东亚-北太平洋地区折射率辐射表征大气烟雾大气污染

Influence of solidification rate on the microstructure of (Nd,Dy)_(12.8)(Fe,Co)_(80.7)B_(6.5) cast strips

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Rare Metals 2005年第2期24卷 200-204页

作者： LIUHanqiang wangbiao HANGuangbing GAORuwei SchoolofPhysicsandMicroelectronics ShandongUniversityJinan250100China

The influence of solidification rate on the microstructure of (Nd,Dy)(12.8)(Fe,Co)(80.7)B-6.5 cast strips was reported in this paper. The strips prepared at different wheel speeds were analyzed by X-ray diffraction (XRD). The microstructure of the strips was investigated by backscattered scanning microscope (BSM). The XRD results show that the strips are mainly composed of the main phase (T-1) existing apparent alignment along [00L]. The thickness of T-1 columnar grains is larger when the solidification rate is lower and the over-small isotropic microcrystalline appear on the cooling surface of the strips when the solidification rate is too high. The adequate wheel speed for obtaining the optimum microstructure of the strips is about V = 2.0 m/s. The strip prepared at V = 2.0 m/s possesses suitable thickness and the highest alignment degree of T-1 columnar grains, uniformly distributed Nd-rich phase, and no existence of alpha-Fe phase. This kind of cast strip is an ideal starting material for preparing sintered magnets with high magnetic properties.

关键词： metal material microstructure solidification rate cast strip Nd-Fe-B

INVESTIGATION OF THE DYNAMIC BEHAVIOR OF TWO COLLINEAR ANTI—PLANE SHEAR CRACKS IN A PIEZOELECTRIC LAYER BONDED TO TWO HALF SPACES BY A NEW METOHD

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Applied Mathematics and Mechanics(English Edition) 2003年第1期24卷 1-13页

作者： ZHOUZhen－gong wangbiao CenterforCompositeMaterialsandElectro－OpticsResearchCenter HarbinInstituteofTechnologyHarbin150001China

The dynamic behavior of two collinear anti-plane shear cracks in a piezoelectriclayer bonded to two half spaces subjected to the harmonic waves is investigated by a newmethod. The cracks are parallel to the interfaces in the mid-plane of the piezoelectric *** using the Fourier transform, the problem can be solved with two pairs of triple integralequations. These equations are solved by using Schmidt's method. This process is quitedifferent from that adopted previously. Numerical examples are provided to show the effectof the geometry of cracks, the frequency of the incident wave, the thickness of thepiezoelectric layer and the constants of the materials upon the dynamic stress intensity factorof cracks.

关键词： Schmidt方法三重积分方程压电材料动态应力强度因子裂纹反平面切变

Preparation and Its Properties of Vanadium Carbide Coating Through B_4C Reducing V_2O_5

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工程科学（英文版） 2005年第1期3卷 46-50页

作者： wangbiao WangYudong ZhangZihua SchoolofMechanicalEngineering KunmingUniversityofScience＆TechnologyKunming650051

A vanadium carbide coating on steel’s substrates was prepared through B 4C reducing V 2O 5 in molten salt bath. The thickness of VC-coating reached 14-18μm at 920℃ for 6 h, and the hardness of VC-coating reached HV2200-HV2400. The sliding wear resistance of the VC-coating is not only 3350 times of that of SCN-coating, but also more excellent than that of other VC-coatings, prepared through aluminum reducing V 2O 5 or through TD processing. The experimental results indicate that the different VC-coating resistances to wear and corrosion increase with a raise of the free carbon contents in VC-coatings. The continuous service life of a tongue grooves of the high speed cigarette machines, with this VC-coating, reached good results of 140-150 days.

关键词：碳化钒涂层还原碳化硼 B4C V2O5

固体废弃物矿物组分特征及其改良土壤的实验研究

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固体废弃物矿物组分特征及其改良土壤的实验研究

作者：汪彪成都理工大学

学位级别：硕士

固体废物急剧增加,不仅因堆放占据大量土地资源,而且造成环境的严重污染,甚至引发崩塌、滑坡、泥石流等次生地质灾害。另外,由于人地关系紧张和世界粮食短缺,人们不合理地开发利用土地并无节制地使用化肥和农药,加之生态环境持续恶化,... 详细信息

固体废物急剧增加,不仅因堆放占据大量土地资源,而且造成环境的严重污染,甚至引发崩塌、滑坡、泥石流等次生地质灾害。另外,由于人地关系紧张和世界粮食短缺,人们不合理地开发利用土地并无节制地使用化肥和农药,加之生态环境持续恶化,全球气候转暖等因素,造成土壤退化、肥力下降的现象日益严重,使得土壤不具备为植物协调和供应养分的能力。本文针对以上问题,利用固体废弃物粉煤灰、磷石膏和污泥按照一定的配比制备成改良剂,然后将改良剂应用于土壤改良,希望通过本课题的实验研究能够改善固体废弃物带来的环境问题和缓解土地受到的压力。本课题根据粉煤灰、磷石膏和污泥的物质组分特征,从pH值入手,将三者按一定比例配制成土壤改良剂,然后对彭州、金堂和邛崃三地的贫瘠土壤进行改良实验研究,得出结论如下:(1)实验运用扫描电镜、X射线衍射分析,结合农化分析和岩化分析等方法总结了粉煤灰、磷石膏和污泥三固体废弃物物质组分、理化性质和肥力状况,实验表明三固体废弃物具备改良土壤的条件。(2)通过对彭州、邛崃和金堂三地的贫瘠土壤进行地质背景、地层特征和第四系特征研究,经过X射线、农化分析和岩化分析等,结果发现土壤中石英所占比例大,硅酸盐含量高,风化严重,肥力不足,有效氮、磷、钾和有机质含量远低于土壤二级标准。(3)通过实验确定了粉煤灰、磷石膏和污泥三固体废弃物在16:30:0.05时所配土壤改良剂性能较好,与贫瘠土壤按照1:5混配,能很好地提高土壤肥力,配后土壤的有效氮、磷、钾和有机质均达到土壤二级标准。(4)本文探讨了固体废弃物改良土壤的机理,阐明污泥的加入提高了土壤有机质的含量,分析土壤中有效氮、磷、钾的提高是由于三固体废弃物直接提供或转化而来,同时固体废弃物的加入,有利于增加土壤的团粒结构和腐殖酸含量,促进土壤生态系统的优化,保证作物生长所需的养分需求,为作物生长创造条件。

关键词：固体废弃物矿物组分改良土壤

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整合素连接激酶在血管生成中的作用研究进展

中华烧伤杂志 2017年第5期33卷 317-320页

作者：周旺标李叶扬广州市红十字会医院暨南大学医学院附属广州红十字会医院烧伤整形科510220

Integrin-linked kinase (ILK) has been found for twenty years, and its biological characteristics have been extensively studied by multi-discipline. At present, studies of ILK are mainly focused on its roles in angiogenesis, tumor formation, and tissue fibrosis, etc. In recent years, the regulation effect of ILK in angiogenesis attracts attention of researchers. The studies showed that ILK can stimulate the secretion of angiogenic factor, promote the proliferation and migration of endothelial cells and inhibit their apoptosis, and therefore play an important role in the regulation of angiogenesis. Further research on molecular mechanism about the role of ILK playing in angiogenesis may provide an effective method for the treatment of some diseases.

关键词：新生血管化,生理性新生血管化,病理性整合素连接激酶机制

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用于铝板声弹性系数标定的电磁加载装置设计

电工技术学报 2020年第19期35卷 4139-4149页

作者：张闯王标刘素贞杨庆新省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学) 天津300130 河北省电磁场与电器可靠性重点实验室(河北工业大学) 天津300130

基于临界折射纵波对金属材料进行应力无损检测具有广泛的应用前景,该检测技术中金属材料声弹性系数的标定尤为重要。目前金属材料声弹性系数标定方法主要是采用机械加载方式对金属材料进行拉伸测试,这种方法不适用于一些在役金属构件的... 详细信息

基于临界折射纵波对金属材料进行应力无损检测具有广泛的应用前景,该检测技术中金属材料声弹性系数的标定尤为重要。目前金属材料声弹性系数标定方法主要是采用机械加载方式对金属材料进行拉伸测试,这种方法不适用于一些在役金属构件的声弹性系数的测量。针对上述问题,该文基于洛仑兹力的产生机理设计了一种用于铝板声弹性系数标定的电磁加载装置。采用二维仿真模型对装置进行了尺寸参数分析与选择,建立三维有限元仿真模型计算铝板轴向电磁加载力。搭建了电磁加载实验平台,测量电磁加载状态下铝板中临界折射纵波的传播时间并计算铝板中轴向应力平均值,实验结果与仿真结果基本一致,验证了电磁加载装置的可行性。

关键词：声弹性系数电磁加载装置尺寸选择临界折射纵波

创新驱动背景下绿色食品供给者与消费者演化博弈策略研究

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中国调味品 2023年第3期48卷 204-209页

作者：赵莉赵慧王彪哈尔滨商业大学商务学院哈尔滨150028

在目前以国内大循环为主体、国内国际双循环相互促进的新发展格局的关键时期,满足广大群众的消费需求是创新发展的出发点与落脚点。随着创新驱动发展战略的深入实施,绿色食品的供给者与消费者表现出不同的行为特征。文章引入政府激励的... 详细信息

在目前以国内大循环为主体、国内国际双循环相互促进的新发展格局的关键时期,满足广大群众的消费需求是创新发展的出发点与落脚点。随着创新驱动发展战略的深入实施,绿色食品的供给者与消费者表现出不同的行为特征。文章引入政府激励的相关要素,在完全竞争市场及有限理性假设下,构建绿色食品供给者和消费者两类行为主体之间的演化博弈分析模型,探究双方的相互作用及不同情形下两者做出何种策略选择行为及不同状态下演化博弈的均衡解。最后,根据研究结论,从政府、产业、消费者角度提出相应建议。

关键词：绿色食品供给者绿色食品消费者创新演化博弈

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我国微藻固定烟气CO_(2)潜力时空格局分析

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煤炭科学技术 2022年第6期50卷 107-116页

作者：万伟华程军郭王彪广东省环境科学研究院广东广州510045 浙江大学能源清洁利用国家重点实验室浙江杭州310027 Microbial Sciences Institute Department of Microbial PathogenesisYale UniversityConnecticut New Haven 06511

微藻固定烟气CO_(2)技术是温室气体控制领域的国际前沿研究热点和高技术竞争焦点,对我国发展低碳经济和节能减排具有重要意义。为促进微藻固定烟气CO_(2)技术在全国范围内的推广使用,研究基于内蒙古鄂尔多斯螺旋藻产业园内CO_(2)固定速... 详细信息

微藻固定烟气CO_(2)技术是温室气体控制领域的国际前沿研究热点和高技术竞争焦点,对我国发展低碳经济和节能减排具有重要意义。为促进微藻固定烟气CO_(2)技术在全国范围内的推广使用,研究基于内蒙古鄂尔多斯螺旋藻产业园内CO_(2)固定速率实测数据,模拟得出光照强度、平均气温和日照时长等气象要素对微藻固定烟气CO_(2)潜力的相互作用模型,并将该模型应用至全国范围。通过地理空间显示、全局空间自相关、局部空间自相关等手段与方法,探索分析全国361个行政区划研究单元内微藻固定烟气CO_(2)潜力的时空分异特征及影响因素。结果表明:①从影响因素分析来看,光照强度对微藻固定烟气CO_(2)潜力的影响效果最大,平均气温其次,日照时长最弱。②从时空变化规律来看,全国不同行政区划研究单元微藻固定烟气CO_(2)潜力呈现“夏秋季潜力大、冬春季潜力小”的特点。③从空间分异规律和集聚特征来看,各地区分时段的微藻固定烟气CO_(2)潜力呈现出差异化分布的空间格局,在区域上呈现不同的变化趋势;空间集聚特征上,全国范围内微藻固定烟气CO_(2)潜力存在显著的集聚效应,呈现出“高-高集聚”和“低-低集聚”特征。研究对我国微藻固定烟气CO_(2)潜力的时空格局、影响因素进行了综合分析,对于该技术在全国的广泛推广具有一定的指导意义。

关键词：微藻烟气CO_(2) 时空格局地理空间空间集聚