基于生物反应器制药废水中活的但非可培养状态细菌的分离

[目的]探究制药废水中活的但非可培养（viable but non-culturable,VBNC）状态细菌的组成与系统关系。[方法]利用土质滤材构建生物反应器,基于复苏促进因子（resuscitation promoting factor,Rpf）对 VBNC细菌的复苏刺激生长作用,采用 MPN （most probable number）法,稀释平板法分离其中复苏可培养化的 VBNC 菌株并解析其16S rRNA基因系统关系。[结果]在 MPN培养系中,Rpf对部分细菌有生长刺激作用。制药废水中存在对 Rpf敏感、复苏可培养化的 VBNC优势菌群;制药废水中对 Rpf敏感的 VBNC优势细菌主要有革兰氏阳性放线菌Microbacterium、Gordonia 和 Leucobacter 属近缘菌,革兰氏阴性菌 Candidimonas、Xanthobacter和 Aminobacter属近缘菌,其中菌株 ZYM1、ZYM3、ZYZR4和 ZYXR1可能属于新种。[结论]研究结果揭示了制药废水中存在 VBNC状态细菌,为研究其形成机理、复苏活性化机制以及制药废水的深度处理等提供重要的思路与方法。     

基于3S技术的绿洲荒漠过渡带生态环境的安全研究

本文根据生态系统内部诸因子的相关性以及绿洲与荒漠两大生态系统间的耦合机理,通过对过渡带生态环境进行时空分析与生态安全分析,计算得出了该绿洲生态环境安全程度的定量结果和生态环境演变的空间信息,在此基础上定量地分析及评价了研究区绿洲—荒漠过渡带的演变趋势,进一步提出了绿洲-荒漠过渡带生态环境安全预警系统的建立思路和利用遥感数据对其生态环境进行预警的简单方法。     

莼菜药学研究概述

在广泛文献检索的基础上,对珍稀蔬菜莼菜的成分、保健研究方面的资料进行了概述,为深入开发此珍贵资源提供科学依据。     

新疆甜瓜根腐病研究初报

甜瓜根腐病是新疆喀什地区甜瓜上危害严重的一种病害,经多年的调查研究,摸清了甜瓜根腐病的病原种类、病害症状、发病规律、分布危害特点、寄主范围和防治技术措施.研究成果在生产上推广应用,取得了显著的防治效果.     

关于小蠹虫的防治策略及研究发展方向

小蠹虫是世界性大害虫 ,特别是对松树危害极大 ,猖獗时常可造成林木成片枯死。其生活隐蔽 ,繁殖迅速 ,在造成林木枯萎前不易被人们发现。但衰弱木及某些种类的性外激素对其有很强的吸引力 ,诱集效果显著 ,可作为重要的监测手段。该虫主要发生在立地条件差、林地卫生条件不好或由其它各种原因导致树木生长衰弱的林分。因此 ,其预防措施主要是选用良种壮苗 ,进行适地适树营造混交林 ;加强监测 ,及时消灭虫源基地。其防治策略及研究发展方向应向以生态管理为基础 ,以生物防治为主导的综合治理方向发展 ,方能达到可持续控制小蠹虫对林木的危害     

溶剂萃取法制备药用单宁酸的研究

由工业单宁酸经乙酸乙酯溶剂萃取（５０－５５℃，１－２ｈ），制得药用单宁酸，其得率约为８５％，单宁酸含量超过９４％，乙酸乙酯的回收率超过９０％。经乙酸乙酯萃取的剩余水液可用于碱水解制备没食子酸。产物总得率（包括药用单宁酸和没食子酸）约为９１％。     

Reason and Precaution of Seepage in NATM Tunnel

On the basis of investigation on seepage in the Jinyunshan Tunnel and the Songjiagou No.1 Tunnel,the reasons of the seepage were analyzed and the cracking in concrete that led to seepage was studied by using the probability fracture mechanics.Finally,some suggestions of tunnel waterproofing were proposed.     

Efficacy of the Boar-Operated-System to deliver baits to feral swine

Feral swine (Sus scrofa) pose a significant disease threat to livestock and humans. Emerging technologies to reduce feral swine disease transmission risks include fertility control, vaccination, and toxicants. However, for these technologies to be appropriate for field application, a feral swine-specific oral delivery system is needed. We used two field trials to generate information related to appropriate field application of the Boar-Operated-System (BOS?), an oral delivery system designed to provide bait access only to feral swine. Our objectives were to determine whether pre-baiting BOS? units increased bait removal and to evaluate the proportion of feral swine and non-target animals that ingest baits designed to deliver pharmaceuticals through the BOS?. During both trials we used baits housed within 10 BOS? units. We monitored wildlife visitation, bait removal, and ingestion using motion sensing digital photography and baits containing the bait marker tetracycline hydrochloride (TH). During trial 1 we found three of five pre-baited BOS? units were used by feral swine only. Additionally, we found the five BOS? units that were not pre-baited were not used by feral swine or non-target wildlife. During trial 2 we determined bait removal from the BOS? to be reduced by only 10% for feral swine when activated, whereas bait removal from the BOS? by all other wildlife was reduced by 100% when activated. We captured 81 feral swine and 23 raccoons and found 90% and 13% to have TH-marked teeth, respectively. With minor modifications, the BOS? should be considered a valuable tool to be used in feral swine disease management in conjunction with existing technologies.     

盐穗木研究进展

盐穗木是生长在荒漠、半荒漠盐碱地上的一类重要的半灌木植物资源。综述了盐穗木在生态学、形态学、生理学以及药物化学等方面的研究进展。     

大型环梁式基础油罐边缘板腐蚀的防护

分析了沧州首站８＾＃２００００ｍ＾３浮顶油罐边缘板严重腐蚀的具体情况，产生腐蚀的主要原因是，边缘板与基础间的缝隙进水后，缝隙开口较小，水分不易挥发，形成了边缘板基础和腐蚀环境在较长时间内存在。