我国造纸行业环境保护类型区划分及环境政策建议

基于造纸行业现有分区，结合其原料结构和制约因素，将我国划分为8个环境保护类型区，并提出分区环境政策建议，旨在帮助和强化造纸行业环境管理，改善区域环境质量。  

The proteasomal inhibitor MG132 increases the efficiency of mouse embryo production after cloning by electrofusion

In this study, we cloned mice from ES cells by a post-electrofusion MG132 treatment and improved development of cloned embryos with a sequential cultivation protocol. When 5 microM MG132, a proteasome inhibitor, were used to treat the reconstructed embryos, the capacity of in vitro development, implantation and full-term development were significantly improved. Blastocyst formation rates of the reconstructed embryos from X4 ES cells (F1 strain derived from C57BL/6 x 129sv) and J1 ES cells obtained with or without MG132 treatment were 66.9% and 26.6%, and 66.1% and 34.5% respectively (P < 0.05). A total of 146 two-cell embryos cloned from X4 ES cells with MG132 treatment were transferred to recipients, and five cloned pups (3.4%) were born, of which four survived. When the same numbers of two-cell embryos cloned from X4 ES cells without MG132 treatment were transferred, however, no live-born mice were obtained. When embryos cloned from J1 ES cells without MG132 treatment were cultured in KSOM medium for 54 h followed by culture in CZB medium containing 5.6 mM glucose for 42 h, the blastocyst rate was significantly higher than when they were cultured in KSOM continuously for 96 h (34.5% vs 17.1%). However, sequential cultivation did not improve the development of embryos cloned with MG132 treatment and that of parthenotes. In conclusion, MG132 treatment increased the developmental potential of reconstructed mouse embryos, and sequential cultivation improved development of the embryos cloned by electrofusion without MG132 treatment.  

“十一五”我国造纸行业污染减排分析

造纸行业既是我国社会经济发展重要的基础原材料产业,同时也是当前我国水环境主要的污染行业.因此,造纸行业的污染减排对于完成我国"十一五"主要污染物削减目标至关重要.通过对过去造纸行业环境污染的回顾,综合分析了我国造纸行业环境污染物的排放特征,阐述了今后我国造纸行业发展过程中面临的环境压力和存在的污染减排趋势.  

肉制品生命周期中温室气体排放及减控措施探析

低碳经济号召下,发展以低能耗、低污染、低排放为基础的低碳食品已成为越来越多人的共识。肉制品是重要的温室气体排放源。本文分析了肉制品生命周期温室气体排放,并且从畜禽养殖、生产加工、食用及废物处置等环节提出了降低肉制品生命周期温室气体排放的技术措施。  

我国食品行业建立食品碳标签标识探析

低碳经济号召下,发展以低能耗、低污染、低排放为基础的低碳食品已成为越来越多人的共识。食品碳足迹分析有助于了解食品生产温室气体碳排放和寻找碳减排策略。本文对食品碳足迹与碳标签相关概念进行了介绍,分析了国内外实施食品碳标签的现状,对我国建立食品碳标签体系的意义进行了阐述,为促进我国食品碳标签体系的发展提供借鉴与参考。  

我国农产品产地生态环境状况与农产品安全研究进展

随着我国工农业的快速发展，农业生态环境污染日趋加重，对农产品安全构成严重威胁，而农产品安全问题是直接关系到人体健康的重大民生问题。本文从农业生态环境对农产品安全的影响与危害角度阐述生态环境污染现状，全面分析农业生态环境对农产品安全的危害和存在的问题，在此基础上提出了相应的对策和建议。  

细脚拟青霉甘露醇含量的测定

采用比色法在波长412nm处测定细脚拟青霉菌丝体及固体培养物中甘露醇含量。考察提取溶剂、提取温度、提取时间对甘露醇提取率的影响,得到甘露醇最佳提取条件,以蒸馏水为提取溶剂,菌丝体在60℃时提取60min,固体培养物在10 0℃时提取60m in;对测定方法进行回收率、精密度、稳定性实验,菌丝体中甘露醇回收率为99.94%,相对标准偏差为0.74%,精密度实验相对标准偏差为0.80%,60min内光密度值稳定,固体培养物中甘露醇回收率99.79%,相对标准偏差为1.17%,精密度实验相对标准偏差为1.00%,60min内光密度值稳定。  

制造业突破库存管理瓶颈的方法及实证研究

通过分析目前国内制造业的库存现状及管理思路,找出美国卡莱公司造成成品库存积压的原因及库存积压给企业生产经营带来的不良影响。结合卡莱公司降低库存的实例,指出运用目标管理、鱼骨图、ABC分类等管理工具,是降低库存的最有效方法。本次成功地降低了库存量,为相关制造业进行有效的库存管理提供借鉴。  

发酵液中红霉素的含量测定

建立了红霉素的含量测定方法-初筛用紫外分光光度法(UV),复筛用高效液相色谱法(HPLC).UV法确定磷酸浓度10mol/L,反应温度80℃,反应时间3min,测定波长485nm;确定HPLC法柱温50℃,检测波长210nm.此种方法针对性好,适用于大批量的红霉素发酵液的检测.