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Search Results: 1 - 10 of 73677 matches for " 茆金祥 "
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过去天气统一编报方法

气象 , 2003, DOI: 10.7519/j.issn.1000-0526.2003.06.015
Abstract: 从对应角度出发,分析了《gd01ⅲ电码》有关天气现象各项原则规定的内在规律,在定义了对应码和非对应码的概念后,形成其完整体系,得到一种简单实用的编报方法。
正确理解新版《地面气象观测规范》风观测规定

气象 , 2004, DOI: 10.7519/j.issn.1000-0526.2004.12.020
Abstract:
用小型蒸发量估算E-601B型蒸发量研究
Estimation of E-601B Evaporation by Small Evaporation
 [PDF]

, , 周红梅, 曹慧
Climate Change Research Letters (CCRL) , 2019, DOI: 10.12677/CCRL.2019.84060
Abstract:
为延长单站小型蒸发量历史资料序列的使用价值,依据射阳站4年平行观测资料采用小型蒸发量线性回归方法和选用气温、湿度及日照时数等气候因子多元线性回归方法估算E-601B型蒸发器蒸发量。试验结果表明两者误差与折算系数方法相当:前者年相对误差?1.4%到+2.6%;后者年相对误差?0.9%到+1.6%。气候要素回归方法由于部分月份的多元方程中有个别因子不能通过0.1水平显著性检验,显示其模拟E-601B型蒸发量的可靠性存疑,可能增大年合成误差,计算繁杂,不建议使用该方法换算E-601B型蒸发量数据。
In order to prolong the use value of historical data series of small evaporation at single station, the evaporation of E-601B evaporator was estimated by using linear regression method of small evaporation and multiple linear regression method of climatic factors such as temperature, humidity and sunshine hours based on 4-year parallel observation data at Sheyang Station. The experimental results show that the errors of the two methods are equivalent: the annual relative error of the former is ?1.4% to +2.6%, and the annual relative error of the latter is ?0.9% to +1.6%. Because some factors in the multivariate equation of some months cannot pass the 0.1 level significance test, it shows that the reliability of the simulation of E-601B evaporation is doubtful, which may increase the annual synthetic error and make the calculation complicated. It is not recommended to use this method to convert the E-601B evaporation data.
群体性事件网络舆情的预警机制研究
Early Warning Mechanism Research of Network Public Opinion on Mass Incidents
 [PDF]


Journalism and Communications (JC) , 2014, DOI: 10.12677/JC.2014.23003
Abstract:
网络舆情对环境群体性事件的发生有重要的影响。环境群体性事件中的网络舆情主要有传播速度快、范围广、影响大、呈现非理性化、情绪化倾向等特征,伴随着谣言扩散的同时还具有动态性、表层性的特征。网上舆情控制工作,要讲究方式方法,应依照“主动介入、慎重操作、严肃对待”的策略,采取公开与隐蔽、谋略与技术相结合的方法,化解与转移网上热点与敏感问题,有效干扰、阻止、压制和反制网上出现的恶意炒作,维护健康的网络舆论环境。
The network public opinion has important influence on the occurrence of environmental mass in-cidents. The network public opinion in environmental mass incidents mainly has the characteristics of fast speed, wide range, large influence, and presents the non-rational and emotional tendencies, accompanied by the spread of rumors and at the same time dynamic and superficial characteristics. Online public opinion control work, should pay attention to methods, in accordance with the “active intervention, prudent operation, seriously treat” strategy, to take public and hidden strategy and combination of the technology and strategy, dissolving and transferring online hot and sensitive issues. Then we can interfere, prevent, suppress and counter online malicious hype effectively, maintaining a healthy network public opinion environment.

受体型酪氨酸激酶PDGFRβ在毕赤酵母中的表达与纯化
建胜,,张元兴
微生物学通报 , 2009,
Abstract: 构建了受体酪氨酸激酶 PDGFRβ 的融合表达载体 pPIC3.5K-PDGFRβ, 转化毕赤酵母GS115, 通过组氨酸营养缺陷型筛选, G4l8 高拷贝菌株筛选, 以及摇瓶诱导表达筛选, 得到一株高表达 PDGFRβ 毕赤酵母菌株 M3。对该菌株进行5 L罐培养, 镍柱亲和纯化在 250 mmol/L 咪唑浓度下洗下 PDGFRβ 融合蛋白, Western blot验证约为90.08 kD, 酶联免疫反应检测表明融合表达的PDGFRβ 具有高的酪氨酸激酶活性。为筛选其小分子抑制剂奠定了基础。
滨海盐渍土非饱和导水率的研究
陈效民,泽圣,徐中
南京农业大学学报 , 1995, DOI: 10.7685/j.issn.1000-2030.1995.03.012
Abstract: 采用结壳法对三种滨海盐渍土的非饱和导水率进行了研究。结果表明非饱和导水率与负压水头呈指数曲线关系,当负压水头达10kPa时,三种滨海盐渍土的非饱和导水率渐趋一致;在质地基本相同的情况下,土壤盐分、容重、孔隙度以及有机质含量均对非他和导水率有很大的影响;结壳层的组成不同对测定非饱和导水率也有一定的影响,但结壳法完全能运用于滨海盐渍土非饱和导水率的研究。
江苏大丰王港垦区河水水质监测及其评价
泽圣,方明,陈效民,陈铭达,徐中
南京农业大学学报 , 1996, DOI: 10.7685/j.issn.1000-2030.1996.04.009
Abstract: 研究了王港垦区河水盐分多点动态监测资料,进行水质评价,并对本区河水灌溉利用的可能性和改善区内河水水质提出了改进意见。
大丰王港试验站滨海盐渍土饱和导水率的初步研究
陈效民,泽圣,刘兆普,徐中
南京农业大学学报 , 1994, DOI: 10.7685/j.issn.1000-2030.1994.04.025
Abstract: 大丰王港试验站滨海盐渍土饱和导水率的初步研究陈效民,茆泽圣,刘兆普,徐中祥(南京农业大学自然资源与环境科学系,南京210095;大丰王港试验站,大丰224145)PRELIMINARYSTUDYONSATURATEDHYDRAULICCONDUCTI...
刺角瓜对南方根结线虫的抗性及特征分析
,振川,李惠霞,谢丙炎
园艺学报 , 2014,
Abstract: 采用温室盆栽人工接种鉴定技术,对刺角瓜(cucumismetuliferus)‘cm3’品系进行了抗南方根结线虫的鉴定,并且对其根结线虫的发育进行了观察。结果表明,刺角瓜‘cm3’对南方根结线虫具有稳定的抗性,根结数量、大小与对照栽培黄瓜(c.sativus)‘9930’存在显著差异。通过南方根结线虫发育状态观察证实,南方根结线虫在侵染栽培黄瓜21d后就能产卵完成其生活史,而侵染刺角瓜后发育缓慢或停止,28d也不能完成其生活史,只有少量的能够在42d时发育到成虫阶段。试验结果为黄瓜抗根结线虫育种提供了有力依据。
最大功率条件下串联太阳电池电流方程的确定
翟载腾,程晓舫,,查珺,美琴
中国电机工程学报 , 2007,
Abstract: 基于太阳电池电流方程和基本电路理论,通过各单体太阳电池参数求解出太阳电池串联后的短路电流ISC、开路电压UOC、最大功率点电流Im、最大功率点电压Um,从而对串联后的太阳电池建立封闭的方程组,可以对反向饱和电流I0、二极管理想因子A、电池串联内阻RS这3个待定参数封闭求解,达到了确定串联后新的太阳电池电流方程的目的。对2个单体太阳电池参数一致和不同时的2种情况进行模拟实验,结果证明所提方法的正确性和可行性:理论值与实验值的误差小于2%;在理论上直接确定出串联太阳电池电流方程所需的参数。
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