水泥精细粉磨助力行业转型发展

世界商贸理事会可持续发展委员会（WBCSD）水泥可持续倡议（CSI）组织2010年开展了一项全球性调查,全球300名代表对水泥行业发展按重要性排序确定了11类活动领域：能源效率,可替代燃料和原料,个人的健康与安全,CO2排放,社区的健康与安全,空气质量和（非CO2）排放,可持续建设,低碳水泥产品,混凝土的循环,水,生物多样性和土地管理。

美国矿物技术有限公司拜访中国造纸学会

中国造纸学会报道 2016年8月29日,美国矿物技术有限公司（Minerals Technologies Inc.,MTI）高级副总裁Rand Mendez、亚洲区副总裁黄启光一行4人访问了中国造纸学会。中国造纸学会常务副理事长曹振雷、中国造纸学会常务副秘书长杜荣荣共同接待了来宾。曹振雷常务副理事长代表中国造纸学会对MTI公司的来访表示欢迎,并介绍了我国造纸工业的发展现状以及国家淘汰落后产能和节能减排的相关政策。

Ultrastructure of spermatozoa of Bullacta exarata （philippi） and its significance on reproductive evolution and physio-ecological adaptation

The morphology and ultrastructure of Bullacta exarata spermatozoa observed by light and transmission electron microscopy are presented in this paper. The spermatozoon is composed of head with a simple acrosomal complex and an elongated nucleus, and tail with a midpiece, principal piece and an end piece. The midpiece consists of a mitochondrial ring, and the principal piece is composed of axoneme and lateral fin. The structure of 5. exarata spermatozoa differs significantly from that of other gastropods, especially in the lateral fin and the principal piece, which was described scarcely before. A comparison is made between B. exarata and other gastropods, and its significance on reproductive evolution and physio-ecological adaptation is preliminarily discussed.

Total Reflux Operation of Multivessel Batch Distillation for Separation of Binary Mixtures

Multivessel batch distillation(MVBD) is mainly used to separate mixtures with more than two components. In this article, a new operation mode with MVBD is proposed for separation of binary mixtures under total reflux. A mathematic model is setup for the simulation. The proposed operation policy and the regular operation with constant reflux are compared theoretically and experimentally. The results show that the new operation mode has great advantages in time saving and operation flexibility. MVBD presents great potential for separation with high efficiency.

Coal flotation using wash oil as a new type of collector

The use of wash oil as a coal collector is proposed to overcome the disadvantages of regular collectors in coal slime flotation. These disadvantages include high price, limited sources and high consumption. The effect of additives on flotation was studied and an innovative ＂one rough separation--one cleaning separation＂ flotation technology was developed. The experimental resuits show that the clean coal ash content decreases by about 1.36% and the clean coal yield declines by around 10% with the application of the depressant. There is an increase of 3.76% in the yield of clean coal and a decrease of 0.40% in the ash content caused by utilizing a dispersant. An ultimate product having an ash content of 10.78% and yield of 70.12% can be attained using a combination of dispersant and depressant. The use of this new technology decreases the ash content by 1.21%, decreases the yield by 2.80% and an increases the coal flotation perfect index by 2.03%. Compared to common flotation, the utilization of the new technology reduces ash by 0.17%, increases yield by 5.3% and increases perfect index by 4.18%.

Electrofusion between Blastula Cells and Unfertilized Egg in Loach (Paramisgurnus dabryanus)

Electrofusion between blastula cells and unfertilized eggs in loach were investigated usingdielectrophoretic field where, under alternating sinusoidal electric field, blastula cells formed beads-like chain in close contact with the unfertilized egg and cell fusion occurred between eggs and thecells in tight contact with them. The nuclei ofblastula cells were brought into the cytoplasm of therecipient eggs, where they promoted the development of the fused eggs just like the zygote nuclei.But the development of the fused eggs was different from that of zygotes. Several nuclei might enterone and the same egg simultaneously and all of them could undergo division, resulting in severalblastomere after the first cleavage of the recipient egg. Before blastula stage, the embryo developingfrom the fused egg showcd irregular shape, but it was soon regulated and developed to a normalblastula which often continued its development into a normal individual. Cell/egg electrofusion cameto its highest fosion rate (80%) 8nd hatching rate (20%), with cell density at 1×10~3 cells/ml, Ca^(++)concentration at 10 mM, mannitol at 0.2 M and when the blastula cells were digested with 100μg/ml pronase E for 6-10 min at 20℃. The mechanism underlying development of electrofused eggsis discussed. As the result indicates, electrofusion might prove to be a promising biotechnology justas nuclear transplantation.

Combined process of sequencing batch reactor activated sludge process and constructed wetland for domestic wastewater treatment

By combining sequencing batch reactor (SBR) activated sludge process and constructed wetland (CW), this study is to achieve the domestic wastewater treatment. Our purpose was to determine the optimum operating parameters of the combined process. The process involved advantages and shortages of SBR and CW. Under normal temperature, the 3rd cycle (SBR’s operation cycle is 8 h: inflow for 1 h, limited aeration for 3 h, sediment for 1 h, outflow for 1 h, and idling for 2 h; CW’s hydraulic retention time (HRT) is 24.8 h and hydraulic loading is 24.5 m3/m2 d) was the best cyclic mode. The effluents can meet the standard GB/T18921-2002: "The reuse of urban recycling water: water quality standard for scenic environment use". In the 3rd cycle, the efficiency of CW was the maximum, and energy consumption of SBR was the minimum. Under the condition of low dissolved oxygen, the removing efficiency of chemical oxygen demand (COD) and ammonia was not affected obviously. Simultaneously, nitrification and denitrification phenomena occured and phosphorus was absorbed obviously.

汉语拼音中的缩写问题

采用拼音文字的各国,为了书写和口讲的方便起见,在正字法中制定了一些缩写的办法。缩写的好处是:易看、易写、易记;而且便于填写表格。如:英语的Mr.(先生)是Mister的缩写;法语的M.(先生)是Monsieur的缩写;意大利语的S.(先生)是Signore的缩写。英语的U.S.S.R.(苏维埃社会主义联盟共和国)是Union of Soviet SocialistRepublic的缩写;G.D.R.(德意志民主共和国)

改善土路的经验

为了进一步大力改善土路;千方百计增加晴雨通车里程,必须破除各种思想障碍、大革原始土路的命、向大自然要原材料,充份利用工业废品,大胆创试新办法,开辟改善土路的新除径。兹将这次大会中各单位的先进经验扼要综合如下作为很好开展这一工作的参考:一、关于改善土路的方法步骤方面在改善土路工作中,贯彻两条腿走路的方针,采取土洋结合,大中小型结合,群众运动与专业队伍相结合的办法,经验证明这就能加快改善速度。