西安市草坪应用现状调查研究   总被引：6，自引：0，他引：6  

吉文丽  李卫忠  田养森 《西北林学院学报》1999,14(4):104-108

通过西安市高校、工厂、街道、广场草坪应用的调查分析,认为西安草坪发展不尽合理,指出草坪应用中存在的问题。并针对性地提出了一系列合理化建议,以便使草坪在西安市绿化中充分发挥其美化环境、保护环境和改善环境的作用。  相似文献   

黑龙江省土壤分类与中国系统分类参比分析     

张之一  田秀萍  辛刚 《黑龙江八一农垦大学学报》1999,11(2):1-6

本计黑龙江省土壤普查查分出的１３个剖面,、按中国土壤系统分类的方法进行检索,并对两个分类的差异经和有关问题进行讨论。  相似文献   

Development of 127 Novel Microsatellite Markers for the Pacific Abalone,Haliotis discus hannai     

Zhen Zhang  Jingjie Hu  Zhenmin Bao  Chuanqi Lu  Weiwei Li  Le Tian  Xiao Liu 《Journal of the World Aquaculture Society》2011,42(3):423-434

  相似文献   

Silymarin inhibits adipogenesis in the adipocytes in grass carp <Emphasis Type="Italic">Ctenopharyngodon idellus</Emphasis> in vitro and in vivo     

Peizhen Xiao  Zhou Yang  Jian Sun  Jingjing Tian  Zhiguang Chang  Xuexian Li  Baotong Zhang  Yuantu Ye  Hong Ji  Ermeng Yu  Jun Xie 《Fish physiology and biochemistry》2017,43(6):1487-1500

In this study, two experiments were performed to explore the function of silymarin in adipogenesis in grass carp (Ctenopharyngodon idellus) using in vitro and in vivo models. In experiment 1, differentiated grass carp pre-adipocytes were treated with silymarin for 6 days. Treatment with 100 μg mL^?1silymarin (SM100 group) significantly reduced triglyceride accumulation at day 6. The adipogenic gene expression levels of PPARγ, C/EBPα, SREBP1c, FAS, SCD1, and LPL, and the protein expression level of PPARγ were significantly down-regulated in the SM100 group. Additionally, the SM100 group had significantly lower reactive oxygen species production and reduced glutathione contents compared with the control in vitro. In experiment 2, the juvenile grass carp (mean body weight= 27.4 ± 0.17 g) were fed six isonitrogenous and isocaloric diets in a factorial design containing 0, 100, or 200 mg kg^?1 silymarin (SM0, SM100, SM200) associated with either 4 or 8% lipid levels (low lipid, LL, and high lipid, HL, respectively) for 82 days. The results demonstrated that dietary silymarin supplementation significantly reduced the elevated intraperitoneal fat index in grass carp fed with high-lipid diets, and the gene expression of adipogenesis (PPARγ, FAS) when supplemented with dietary silymarin was notably lower than when no silymarin was supplemented under the high-lipid diets. Thus, our data suggest that silymarin suppressed lipid accumulation in grass carp both in vitro and in vivo, and the effect might be due to an influence on the expression of adipogenesis factors and ROS production partly associated with effects on antioxidant capability.  相似文献   

浅谈依饶公路宝清至八五三段建设项目几条监理经验     

田春河 《林业科技情报》2005,37(2):89-90

通过在依饶公路的学习与实践,总结了做好监理工作的几条经验。  相似文献   

Semisynthetic ferulic acid derivative: an efficient feed additive for Genetically Improved Farmed Tilapia (Oreochromis niloticus)          下载免费PDF全文

Wei Liu  Juan Tian  Xing Lu  Hua Wen 《Aquaculture Research》2017,48(9):5017-5028

Ferulic acid (FA) derivative was synthesized by modifying the functional groups of FA as dietary additive in the feeding of Genetically Improved Farmed Tilapia (GIFT) juveniles. Structural confirmation of this compound was based on IR, ¹H and ¹³C NMR techniques. This study was conducted to evaluate the effects of dietary FA derivative supplementation on growth performance, antioxidant status and serum biochemical parameters of GIFT juveniles compared with that of FA. A total of 675 fish with an average initial weight of 10.73 ± 0.40 g were fed nine diets supplemented with 0, 0.26, 0.52, 1.04 and 2.08 mmol kg^?1 FA, or 0.26, 0.52, 1.04 and 2.08 mmol kg^?1 FA derivative. Each diet was assigned to three replicate groups of 25 experimental tilapia for 56 days. Weight gain (WG) in groups of fish fed FA derivative was much higher than that of fish fed FA diet (P < 0.05). The antioxidant enzyme activities (SOD, CAT and GPx) in serum and liver of tilapia fed the FA derivative diets were significantly higher, while the malondialdehyde values were significantly lower than those of the fish fed the FA diets (P < 0.05). The serum biochemical parameters of GIFT were significantly improved by the FA derivative supplement. Moreover, feed conversion ratio, hepatosomatic index and viscerosomatic index were significantly decreased in fish fed FA or FA derivative diet at 0.52 mmol kg^?1 feed (P < 0.05). The investigation on the semisynthetic FA derivative provides a new way for developing safe and efficient feed additives.  相似文献   

青海省英得尔种羊场种羊流产血清学调查   总被引：1，自引：0，他引：1  

冉双存  靳文忠  李长宏  田小龙  雅航前  董廷贵 《中国动物检疫》2010,27(6):54-55

通过间接血凝试验(IHA)和虎红平板凝集试验(RBPT),对来自青海省英得尔种羊场的353份羊血清进行布鲁氏菌、弓形虫和衣原体三种主要疫病的血清抗体检测。结果表明,18.9%(33/174)的山羊血清和3.9%(7/179)的绵羊血清其衣原体抗体血清凝集效价≥1:16(++),被判为阳性;抗布鲁氏菌和弓形虫的血清抗体均未检测到。  相似文献   

FBG传感器在特殊洞段结构稳定性监测中的应用     

欧阳宏  夏天 《中国农村水利水电》2022,(2):206-209

光纤光栅传感器具有抗电磁干扰、无需供电、耐腐蚀、灵敏度高等特点,已广泛应用于土木水利工程领域.引水隧洞作为水利行业一种常见的建筑结构,受隧洞本身结构、工程及环境等特点影响,其部分特殊洞段结构存在安全隐患,需对其进行长期有效的稳定性监测.以甘肃省引洮供水一期工程7号隧洞为例,介绍光纤传感技术在引水隧洞结构安全监测中的应用...  相似文献   

新疆石河子地区牛支原体的分离鉴定及药物敏感性分析     

肖洋洋  李芮芮  马忠臣  唐恬  王娜  陈创夫  郑炜  王勇  王鹏雁 《中国畜牧兽医》2023,50(2):754-763

【目的】确定引起新疆石河子地区集约化牛场常发性肺炎的主要病原同时进行病原的体外药物敏感性分析。【方法】采集有典型咳嗽、流涕症状的牛鼻拭子10份和病死牛肺脏组织1份,用牛支原体特异性引物进行PCR检测,将检测为阳性的样本进行病原培养纯化,对纯化后的分离株菌落进行形态学观察、Dienes染色、生化试验及16S rRNA测序和进化分析,通过测定颜色变化单位(CCU)测定分离株生长曲线,并对分离株进行药物敏感性试验。【结果】PCR结果显示,10份鼻拭子中检测出7份牛支原体阳性样本,1份病死牛肺脏组织也检测为阳性;在涂有肺脏组织研磨液培养液的PPLO固体培养基上长出针尖状的菌落,纯化后分离株菌落形态为典型的煎蛋状;Dienes染色可见明显的深蓝色中心脐;生化试验结果显示,分离株不水解明胶、精氨酸、七叶苷,不发酵乳糖、葡萄糖和甘露醇,不分解尿素,可还原氯化三苯基四氮唑;16S rRNA测序结果显示,分离株与牛支原体国际标准株PG45相似性为99.7%,与国内牛支原体地方流行株XBY01、Ningxia-1、NM2012、Tibet-10的相似性最高,均为99.9%;生长曲线测定结果显示,分离株在培...  相似文献   

白果活性蛋白的酶法水解及抗氧化活性研究   总被引：15，自引：6，他引：9  

邓乾春  陈春艳  潘雪梅  田斌强  谢笔钧 《农业工程学报》2005,21(11):155-159

白果活性蛋白(GAP)是华中农业大学天然产物化学实验室首次从白果中分离得到的一种以清蛋白为主的且具有显著生物活性的蛋白,为扩大该蛋白在食品中的用途,提高其生物活性,研究了酶法水解制备白果肽段的方法及其抗氧化活性的变化。通过单因素分析、正交试验以及对试验结果的分析,确定了2709碱性蛋白酶水解白果活性蛋白的最佳水解条件为：底物浓度1%,pH值8.5,水解温度45℃,酶浓度7000 U/g,反应时间6 h。以Fenton体系和邻苯三酚体系检验其抗氧化活性,结果表明白果肽段较酶解前的活性蛋白,抗氧化活性有不同程度的提高,但两者均具有较强的抗氧化活性。  相似文献