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1.
科技期刊编辑技术经济分析一折 总被引:1,自引:0,他引:1
余仲芳 《武汉化工学院学报》1998,20(1):89-92
通过研究反映期刊信息密度的各参数与年论文容量、年载文页数及期费用之间的关系,导出了从一个方面描述编辑质量的年费用节约额计算公式,从而使编辑技术纳入了技术经济学的范畴.最后以实例说明其应用. 相似文献
2.
本试验研究了日本长野县山区蚕桑生产的条件,为使蚕桑业稳步发展,改变桑叶浪费严重和蚕室、蚕具长时间闲置的状况,提高土地利用率,增加蚕农收入,经过反复实践提出了年间8次育的技术体系。 相似文献
3.
《中国炼油与石油化工》2014,(2):96-96
正The Petrochemical Research Institute of PetroChina has completed the PDP on technology for recovery of butadiene through C4 alkynes hydrotreating which is ready for commercialization.It is told that Daqing Petrochemical Co.,Dushanzi Petrochemical Co.,Lanzhou Petrochemical Co.and Fushun Petrochemical Co.have all showed great concerns for the progress in the research on this topic.In 相似文献
4.
Ministry of Industry and Information Technology Published "Directory of Process,Technology and Equipment for Industrial Water Saving Encouraged by the State(First Edition)"(Draft) 下载免费PDF全文
《造纸信息》2014,(8):76-77
On December 25th, 2013, the Ministry of Industry and Information Technology published "Directory of Process Technology and Equipment for Industrial Water Saving Encouraged by the State (First Edition)" (Draft) on its website. 相似文献
5.
Yang Honghui 《中国橡胶》2014,(24):11-12
On October 16, Deng Yali, the president of CRIA, announced the formal release of Study on Development Strategy for China Rubber Industry Power (hereinafter referred to as Strategy for Rubber Industry Power) on the sub-forum of China International Rubber Industry Expo-"China Rubber Industry Power Development Forum & New Book Release Conference of Study on Development Strategy for China Rubber Industry Power" held by CRIA. 相似文献
6.
《中国标准化(英文版)》2014,(6):38-43
National Quality Working Conference
With high importance attached to the national quality work, the State Council has organized three national quality working conferences respectively in 1992, 1999 and 2007. 相似文献
With high importance attached to the national quality work, the State Council has organized three national quality working conferences respectively in 1992, 1999 and 2007. 相似文献
7.
分别用年均递增率法电力弹性系数法、分行业预测法对平顶山市2000~2015年期间的用电量做出预测,对平顶山市的经济发展具有较大意义. 相似文献
8.
采用Kendall秩次相关检验与重标极差R/S相结合的分析方法对闽江上游南平市年平均气温变化趋势进行了研究.结果表明,南平市年平均气温近50 a来总体呈上升趋势,尤其近年较显著,未来几年仍有上升趋势.该方法能较好地揭示气温变化的趋势特征,且可用于分析其他水文时间序列变化趋势,为流域防汛备汛提供科学依据. 相似文献
9.
金保明 《南昌大学学报(工科版)》2014,36(4):347-350
采用重标极差R/S法寻找年平均流量序列的变异点,对序列进行分割,然后运用线性回归法分析年平均流量分割样本序列变化趋势,利用R/S法求出分形Hurst指数并分析序列的持久性或反持久性特征,最后综合两者的结果分析序列未来的变化趋势特征。并以某站年平均流量序列为例进行分析,结果表明:基于线性回归与重标极差R/S法的年平均流量变化趋势分析方法可行。 相似文献
10.
《中国炼油与石油化工》2014,(3):83-83
正Till July 10,2014 the methanol-to-propylene(MTP)reactor C,which operated on domestic catalyst,has been running for 72 hours at the Datang Duolun Coal Chemical Company(DDCCC),symbolizing the successful commissioning of the commercial MTP unit applying the domestic catalyst.The MTP unit is the core of the chemical plant owned 相似文献