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冶金动力 2020年第7期 34-36页

作者：刘恒袁伟飚王杨华李国安安阳钢铁集团有限公司河南安阳455004

针对汽轮机EH油压降低的现象,从主油泵系统、无压回油系统、有压回流系统在线分析,查明原因,确定了3#高调油动机存在内漏。采取相应的措施消除隐患,确保机组EH油系统的可靠运行。

关键词： EH油在线分析油压降低处理

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头序楤木化学成分研究

天然产物研究与开发 1999年第4期11卷 14-18页

作者：肖凯易杨华王忠壮李伊庆林厚文第二军医大学药学院上海200433

自头序楤木70%EtOH提取物分得6个化合物,应用光谱技术(IR,MS,(?)~HNMR,^(13)C ***,2DNMR)及化学方法.确定了他们的结构,分别为β-谷甾醇(Ⅰ),胡萝卜甙(Ⅱ),齐墩果酸(Ⅲ),竹节参皂甙 (?)(Ⅳ):竹节参皂甙Ⅳa(Chikusetsusapomin Ⅳa)(Ⅴ),... 详细信息

自头序楤木70%EtOH提取物分得6个化合物,应用光谱技术(IR,MS,(?)~HNMR,^(13)C ***,2DNMR)及化学方法.确定了他们的结构,分别为β-谷甾醇(Ⅰ),胡萝卜甙(Ⅱ),齐墩果酸(Ⅲ),竹节参皂甙 (?)(Ⅳ):竹节参皂甙Ⅳa(Chikusetsusapomin Ⅳa)(Ⅴ),常春藤皂甙元—28-O-β-吡喃葡萄糖醛酸(1→4)-β-D-吡喃葡萄糖甙(Ⅵ),以上化合物均为首次从该植物中分得,其中Ⅵ为一新化合物.

关键词：头序Song木三萜皂甙化学成分

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燃气锅炉煤气管网疏水系统的优化设计

冶金动力 2015年第8期 18-19页

作者：张文善王伟明陈永峰刘恒王杨华安阳钢铁集团有限公司动力厂河南安阳455004

针对煤气管网疏水系统中存在的问题进行分析,通过采取有效的解决措施,取得了很好的效果,保证了煤气锅炉的安全稳定运行。

关键词：煤气系统疏水优化设计

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煤气锅炉的运行优化

冶金动力 2015年第9期 56-57页

作者：王伟明陈永峰刘恒张文善王杨华安阳钢铁集团有限公司河南安阳455004

针对煤气锅炉运行中出现的问题进行分析,提出了解决办法,取得了很好的效果,提高了锅炉的出力,保证了锅炉的安全稳定运行。

关键词：锅炉运行优化

Assessing Drought Conditions in Cloudy Regions Using Reconstructed Land Surface Temperature

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Journal of Meteorological Research 2020年第2期34卷 264-279页

作者： Shiqi YANG Dejun ZHANG Liang SUN Yongqian wang yanghua GAO Chongqing Institute of Meteorological Sciences Chongqing 401147 College of Resources and Environment Chengdu University of Information TechnologyChengdu 610225 Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences/Key Laboratory of Agricultural Remote SensingMinistry of Agriculture and Rural Affairs of the People’s Republic of ChinaBeijing 100081

Temperature vegetation dryness index(TVDI)in a triangular or trapezoidal feature space can be calculated from the land surface temperature(LST)and normalized difference vegetation index(NDVI),and has been widely applied to regional drought ***,thermal infrared sensors cannot penetrate clouds to detect surface information of sub-cloud *** cloudy areas,LST data include a large number of cloudy pixels,seriously degrading the spatial and temporal continuity of drought *** this paper,the Remotely Sensed Daily Land Surface Temperature Reconstruction model(RSDAST)is combined with the LST reconstructed(RLST)by the RSDAST and applied to drought monitoring in a cloudy *** drought monitoring capability of the reconstructed temperature vegetation drought index(RTVDI)under cloudy conditions is evaluated by comparing the correlation between land surface observations for soil moisture and the TVDI before and after surface temperature *** show that the effective duration and area of the RTVDI in the study area were larger than those of the original TVDI(OTVDI)in *** addition,RLST/NDVI scatter plots cover a wide range of values,with the fitted dry–wet boundaries more representative of real soil moisture *** continuously cloudy conditions,the OTVDI inverted from the original LST(OLST)loses its drought monitoring capability,whereas RTVDI can completely and accurately reconstruct surface moisture conditions across the entire study *** correlation between TVDI and soil moisture is stronger for RTVDI(R=-0.45)than that for OTVDI(R=-0.33).In terms of the spatial and temporal distributions,the R value for correlation between RTVDI and soil moisture was higher than that for ***,in continuously cloudy areas,RTVDI not only expands drought monitoring capability in time and space,but also improves the accuracy of surface soil moisture monitoring and enhances the applicability and reliability of thermal infrared

关键词： land surface temperature reconstruction Remotely Sensed Daily Land Surface Temperature Reconstruction model(RSDAST) temperature vegetation dryness index(TVDI) soil moisture drought

A new Doppler frequency anomaly algorithm for surface current measurement with SAR

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Journal of Oceanology and Limnology 2022年第2期40卷 470-484页

作者： Lihua wang yanghua GAO Peng LU Li FAN Yunxuan ZHOU Department of Geography and Spatial Information Techniques Center for Land and Marine Spatial Utilization and Governance ResearchNingbo UniversityNingbo 315211China Institute of East China Sea Ningbo UniversityNingbo 315211China Chongqing Institute of Meteorological Sciences Chongqing 401147China College of Geo-Exploration Science and Technology Jilin UniversityChangchun 130026China State Key Laboratory of Estuarine and Coastal Research East China Normal UniversityShanghai 200062China

Values for Doppler center frequency are calculated from the echo signal at the satellite using the Doppler centroid method and so include the predicted Doppler frequency caused by the relative motion of the satellite and the Earth,which is the main component of Doppler center frequency and must be removed to obtain the Doppler frequency anomaly for ocean current *** this paper,a new Doppler frequency anomaly algorithm was proposed when measuring surface currents with synthetic aperture radar(SAR).The key of the proposed algorithm involved mean filtering method in the range direction and linear fitting in the azimuth direction to remove the radial and the azimuthal component of predicted Doppler frequency from the Doppler center frequency,*** basis is that the theoretical Doppler center frequency model of SAR exhibits an approximately linear characteristic in both the range direction and in the azimuth *** the help of the new algorithm for predicted Doppler frequency removal,the estimation error of Doppler frequency anomaly can be reduced by avoiding employing the theoretical antenna pattern and imperfect satellite attitude parameters in the conventional Doppler frequency *** measurement results demonstrated that,compared to the conventional Doppler frequency with/without error correction method,the proposed algorithm allows for a pronounced improvement in the current measuring accuracy in comparison with the global ocean multi-observation(MOB)*** addition,the eff ectiveness and robustness of the proposed Doppler algorithm has been demonstrated by its application in the high velocity current in the Kuroshio region.

关键词： synthetic aperture radar(SAR) Doppler frequency Doppler frequency anomaly current retrieval ocean surface currents

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彩超诊断小儿膀胱结石1例

中国中西医结合影像学杂志 2009年第1期7卷 43-43页

作者：王杨华湖北省京山县中医院超声诊断室

男，6岁，因尿频、尿急、间歇性血尿及排尿中断半月余就诊。尿常规示：RBC（＋＋＋）、WBC（＋＋）。超声所见：双肾切面形态大小正常，实质回声均匀。集合系统光点群无分离，内未见异常回声。膀胱内探及一个大小约4．1cm×3．5cm强回... 详细信息

男，6岁，因尿频、尿急、间歇性血尿及排尿中断半月余就诊。尿常规示：RBC（＋＋＋）、WBC（＋＋）。超声所见：双肾切面形态大小正常，实质回声均匀。集合系统光点群无分离，内未见异常回声。膀胱内探及一个大小约4．1cm×3．5cm强回声光团，后方伴声影及彩影，随体位改变而移动。膀胱壁增厚不光滑，最厚处约0．8cm（见图1）。

关键词：彩超诊断小儿膀胱结石

TWO-DIMENSIONAL PARTICLE IMAGE VELOCIMETRY(PIV) MEASUREMENTS IN A TRANSPARENT CENTRIFUGAL PUMP

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Chinese Journal of Mechanical Engineering 2005年第1期18卷 98-102页

作者： yanghua GuChuangang wangTong KeyLaboratoryforPowerMachinery＆EngineeringofMinistryofEducation ShanghaiJiaotongUniversityShanghai200030China

A special transparent centrifugal pump is designed. Detailed opticalmeasurements of the flow inside the rotating passages of a five-bladed shroud centrifugal pumpimpeller have been performed by using two-dimensional particle image velocimetry (PIV). The flow issurveyed at three load conditions q_V/q_(Vd) = 0.4, q_V/q_(Vd) = 1.0, q_V/q_(Vd) = 1.5,respectively. As a result, phase averaged PIV velocity vector maps on three planes between hub andshroud of the impeller are presented. At design load, the mean field of relative velocity ispredominantly vane congruent, showing well-behaved flow without separation. The distributions of therelative velocity on different plane along the pump shaft are very different and there is always alow velocity zone near the pressure-side of the blade at both low and design flow rate, but thelow-velocity-zone at the low flow rate is much larger than that at the design one. The studydemonstrates that the PIV technique is efficient in providing reliable and detailed velocity dataover a full impeller passage.

关键词： Particle image velocimetry (PIV) Centrifugal pump Measurements

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椎间孔镜应用于腰椎间盘突出症的临床观察

中国卫生标准管理 2020年第23期11卷 81-83页

作者：李祥炎连福明朱轶郭立利孙金琼王养华福建医科大学附属三明第一医院骨科福建三明365000

目的研究腰椎间盘突出症(lumbar disc herniation,LDH)采用椎间孔镜的治疗效果。方法选取2017年10月—2019年10月在本院行经皮椎间孔镜手术治疗的92例患病部位为L5~S1的LDH患者,按照经皮内窥镜下椎间盘切除术入路不同分为观察组与对照组... 详细信息

目的研究腰椎间盘突出症(lumbar disc herniation,LDH)采用椎间孔镜的治疗效果。方法选取2017年10月—2019年10月在本院行经皮椎间孔镜手术治疗的92例患病部位为L5~S1的LDH患者,按照经皮内窥镜下椎间盘切除术入路不同分为观察组与对照组,每组46例。对照组采用经椎间孔入路经皮内镜下椎间盘切除术(percutaneous endoscopic transforaminal discectomy,PETD),观察组采用经皮椎板间入路内镜下椎间盘切除术(percutaneous endoscopic interlaminar discectomy,PEID),比较两组手术效果。结果两组手术前后的日本矫形外科协会(Japanese orthopaedic association scores,JOA)评分和Oswetry功能障碍指数(Oswestry disability index,ODI)比较,差异均无统计学意义(P> 0.05);观察组手术时间短于对照组,X线透视次数少于对照组,比较差异均有统计学意义(P <0.05)。结论 PETD、PEID在脱出型腰椎间盘突出症治疗中均有良好疗效,但PEID手术时间更短,X线透视次数更少。

关键词： PETD PEID 腰椎间盘突出症经皮椎间孔镜手术效果透视次数

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高温钛合金支架制件热成形工艺研究

科技资讯 2024年第12期22卷 88-90页

作者：汪洋华万丹黄芳张冬兵束飞王锋罗庆辉航空工业江西洪都航空工业集团有限责任公司江西南昌330096

高温钛合金因其卓越的机械性能和耐高温特性,在航空、航天和高性能汽车工业中展示出广泛的应用潜力。尽管如此,高温钛合金在加工与成形过程中仍面临许多挑战,难以在保持材料性能的同时,实现精确成形。对此,须详细探究高温钛合金的重要... 详细信息

高温钛合金因其卓越的机械性能和耐高温特性,在航空、航天和高性能汽车工业中展示出广泛的应用潜力。尽管如此,高温钛合金在加工与成形过程中仍面临许多挑战,难以在保持材料性能的同时,实现精确成形。对此,须详细探究高温钛合金的重要性及其在各个领域中的应用,并分析高温钛合金支架制件的热成形工艺,探讨在热成形过程中对质量检测和控制的关键点,提供相关的参考信息。

关键词：高温钛合金支架热成形材料性能