检索结果-南通市图书馆

Interaction of Glufosinate and colletotrichum truncatumon Ammonia Levels and Glutamine Synthetase Activity in Hemp Sesbania

引用

American Journal of Plant Sciences 2018年第11期9卷 2320-2337页

作者： Robert E. Hoagland c. douglas Boyette Robin H. Jordan Kenneth c. Stetina crop Production Systems Research Unit USDA-ARS Stoneville MS USA Biological control of Pests Research Unit USDA-ARS Stoneville MS USA

The use of microbes and microbial products as bioherbicides has been studied for several decades, and combinations of bioherbicides and herbicides have been examined to discover possible synergistic interactions to improve weed control efficacy. Bioassays were conducted to assess possible interactions of the herbicide glufosinate [2-amino-4-(hydroxymethylphosphinyl) butanoic acid] and colletotrichum truncatum (cT), a fungal bioherbicide to control hemp sesbania (Sesbania exaltata)]. Glufosinate acts as a glutamine synthetase (GS) inhibitor that causes elevated ammonia levels, but the mode of action of cT is unknown. GS has also been implicated in plant defense in certain plant-pathogen interactions. The effects of spray applications of glufosinate (1.0 mM) orbioherbicide (8.0 × 104 conidia ml-1), applied alone or in combination were monitored (88 h time-course) on seedling growth, GS activity and ammonia levels in hypocotyl tissues under controlled environmental conditions. Growth (elongation and fresh weight) and extractable GS activity were inhibited in tissues by glufosinate and glufosinate plus cT treatments as early as 16 h, but cT treatment did not cause substantial growth reduction or GS inhibition until after ~40 h. Generally, ammonia levels in hemp sesbania tissues under these various treatments were inversely correlated with GS activity. Localization of hemp sesbania GS activity on electrophoretic gels indicated a lack of activity after 30 h in glufosinate and glufosinate plus cT-treated tissue. Untreated control tissues contained much lower ammonia levels at 24, 64, and 88 h after treatment than treatments with cT, glufosinate or their combination. cT alone caused elevated ammonia levels only after 64 - 88 h. Glufosinate incorporated in agar at 0.25 mM to 2.0 mM, caused a 10% - 45% reduction of cT colony radial growth, compared to fungal growth on agar without glufosinate, and the herbicide also inhibited sporulation of cT. Although no synergistic interac

关键词： Bioherbicide Hemp Sesbania Glutamine Synthetase Ammonia Glufosinate colletotrichum truncatum

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于模糊逻辑的过程运行状态识别方法研究与应用

引用

现代化工 2008年第1期28卷 62-64页

作者：孙巍任钟旗 LENZ douglas H. 北京化工大学化学工程学院北京100029 FALcONEER Technologies LLc 4455 Transit RoadSuite 3CWilliamsvilleNY 14221USA

工业生产过程存在许多内在的风险,设备及传感器的故障或操作条件不当都会导致异常状况的发生。面对工业生产过程采集的大量生产运行数据,尤其是同时出现几个异常状况时,操作人员依靠经验难以及时有效地处理。自动化和计算机技术的迅速发... 详细信息

工业生产过程存在许多内在的风险,设备及传感器的故障或操作条件不当都会导致异常状况的发生。面对工业生产过程采集的大量生产运行数据,尤其是同时出现几个异常状况时,操作人员依靠经验难以及时有效地处理。自动化和计算机技术的迅速发展,为过程工业及时有效地处理大量数据提供了可能,通过处理这些数据可得到运行过程的完整信息。本文提出的基于模糊逻辑过程运行状态的最少证据辨识法可全面考虑与过程相关变量、参数对过程运行状态的影响,通过最少证据辨识法可准确判断过程所处的运行状态。在美国杜邦公司己二酸生产过程中的成功应用表明,该方法可及时有效地判断过程所处的运行状态,及时发现故障,其辨识准确率高达95%,确保了过程运行的安全性。

关键词：过程监测故障诊断模糊逻辑最少证据辨识法建模

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

PATTERNS IN SOIL FOOD WEB REPSONSES TO NATURAL AND ANTHROPOGENIc DISTRUBANcES

PATTERNS IN SOIL FOOD WEB REPSONSES TO NATURAL AND ANTHROPOG...

引用

第三世界生态高峰会

作者： moore John c. Neil Rooney Kevin Mccann Peter c.de Ruiter Natural Resource Ecology Laboratory colorado State University.Ft.collins.cO 80523 USA. Department of Integrative Biology University of Guelph Guelph Guelph.Ontario N1G 2W1 canada. Department of Integrative Biology University of Guelph Guelph Guelph.Ontario N1G 2W1 canada. Alterra.Wageningen University and Research center 47 6700 AA Wageningen.Netherlands

Soil food webs possess regularities in structure that are important to key ecosystem services such as the cycling of plant limiting nutrients and the formation and stabilization of soil organic *** webs are organized into energy channels that are based on different resources （plant roots and detritus）,organisms that differ in their physiologies, and coupled by *** detritus channel is subdivided into a fast cycling bacterial channel based on labile substrates,bacteria,and consumers of bacteria,and a slow cycling fungal channel based on resistant snbstrates,fungi,and consumers of *** natural systems one of the energy channels tends to dominate,resulting in an asylnmetry in the relative distribution of biomass and flow of energy within the food *** manipulations involving nutrient additions, tillage,grazing,warming and cO,augmentations in temperate grasslands,agricultural fields and Arctic tundra induce predictable changes in the architecture of the food web and the ecosystem *** and phosphorus additions,tillage,and grazing directly or indirectly alter the forms and availability of nutrients and carbon to alter the c:N ratio of substrates to more labile forms tend to

关键词： PATTERNS IN SOIL FOOD WEB REPSONSES TO NATURAL AND ANTHROPOGENIc DISTRUBANcES

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

牛津学术英语词汇精练

引用

2019年

作者： (英)Julie moore

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

Anesthesia Management for Pulmonary cryoablation

引用

Open Journal of Anesthesiology 2013年第4期3卷 255-261页

作者： Zvi c. Jacob Stephanie Rashewsky Ruth A. Reinsel Thomas V. Bilfinger William moore Department of Anesthesiology Stony Brook University School of Medicine New York USA Department of Anesthesiology Stony Brook University School of Medicine New York USA Department of Radiology Stony Brook University School of Medicine New York USA. Department of Surgery Stony Brook University School of Medicine New York USA

Lung tumors represent a major health impact globally. Pulmonary cryoablation treatment as a palliative measure for patients with non-operable pulmonary lesions has gained popularity over the last decade. With increasing case load and patients medical status becoming more complex, preparation for pulmonary cryoablation requires the implementation of an enhanced perioperative anesthetic plan. current literature as well as our institutional experience shows that this patient population presents with multiple comorbidities raising the challenge of providing anesthetic care. These procedures are done under challenging conditions with limited resources and in remote locations in the hospital. A team approach by the anesthesiologist, thoracic surgeon, and interventional radiologist is critical to the success of this treatment. The present review examines our institution’s anesthetic management of percutaneous cryoablation treatment (PcT) in the treatment of non-operable lung cancer and metastases. The objective of this article is to review the current literature guidelines and to discuss our retrospective institutional experience in anesthesia management of PcT procedures.

关键词： Anesthesia care Percutaneous cryoablation Treatment Lung cancer Pulmonary complications Pneumothorax Hemoptysis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Dietary choline activates the Ampk/Srebp signaling pathway and decreases lipid levels in Pacific white shrimp(Litopenaeus vannamei)

引用

Animal Nutrition 2023年第4期15卷 58-70页

作者： Jingjing Lu Xinyue Tao Jiaxiang Luo Tingting Zhu Lefei Jiao Peng Sun Qicun Zhou douglas R.Tocher Min Jin Laboratory of Fish and Shellfish Nutrition School of Marine SciencesNingbo UniversityNingbo 315211China Guangdong Provincial Key Laboratory of Marine Biotechnology Institute of Marine SciencesShantou UniversityShantou 515063China

An 8-week feeding trial was conducted in Pacific white shrimp(Litopenaeus vannamei)to evaluate the effects of dietary choline supplementation on choline transport and metabolism,hepatopancreas histological structure and fatty acid profile,and regulation of lipid *** isonitrogenous and isolipidic diets were formulated to contain different choline levels of 2.91(basal diet),3.85,4.67,6.55,10.70 and 18.90 g/kg,respectively.A total of 960 shrimp(initial weight,1.38±0.01 g)were distributed randomly into twenty-four 250-L cylindrical fiber-glass tanks,with each diet assigned randomly to 4replicate *** results indicated that dietary choline significantly promoted the deposition of choline,betaine and carnitine(Pcells,total lipid and triglyceride contents in hepatopancreas,and triglyceride and non-esterified fatty acid contents in hemolymph were negatively correlated with dietary choline *** contents of functional fatty acids in hepatopancreas,the activity of acetyl-coA carboxylase(Acc),and the mRNA expression of fas,srebp and acc were highest in shrimp fed the diet containing 4.67 g/kg choline,and significantly higher than those fed the diet containing 2.91 g/kg,the lowest level of choline(Pcells,content of very lowdensity lipoprotein(VLDL),activities of carnitine palmitoyl-transferase(cpt1),lipoprotein lipase and hepatic lipase,and the mRNA expression levels of cpt1,fabp,fatp,ldlr,and ampk in hepatopancreas increased significantly as dietary choline increased(Pcreas m RNA expression levels of ctl1,ctl2,oct1,badh,bhmt,ck,cept,and cct were generally up-regulated as dietary choline level increased(Pconclusion,dietary choline promoted the deposition of choline and its metabolites by up-regulating genes related to choline transport and ***,appropriate dietary choline level promoted the development of hepatopancreas R cells and maintained the n

关键词： Pacific white shrimp choline Lipid Fatty acid Histology Ampk signaling pathway

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Photothermal controls of vegetative dormancy in Poa secunda

引用

Grassland Research 2022年第1期1卷 43-52页

作者： Allen A.chen Shui-zhang Fei Andrew W.Lenssen Kenneth J.moore Department of Horticulture Iowa State UniversityAmesIowaUSA Department of Agronomy Iowa State UniversityAmesIowaUSA

Background:Summer vegetative dormancy is a desirable trait in cool-season grasses when they are interplanted with annual *** bluegrass(Poa secunda ***.)shows summer dormancy,but the environmental cues that control dormancy remain ***:A controlled environment study using temperature and day length combinations of 32.2℃/15 h,26.6℃/14 h,21.1℃/13 h,and 15.5℃/12 h was conducted with *** accessions PI232347,PI639272,and PI232348,and‘Audubon’red fescue as a nondormant control to determine the optimum treatment for dormancy induction.A second study using treatments of 26.6℃/14 h,21.1℃/13 h,and 15.5℃/12 h was conducted to determine the thresholds for dormancy release.A third study used a factorial experiment with two temperatures(32.2℃ and 15.5℃)and two day lengths(15 and 12 h)to differentiate between temperature and day length effects on dormancy ***:Of the four temperature and day length combinations,all except for 15.5℃/12 h resulted in dormancy by the end of 6 weeks,with 32.2℃/15 h inducing dormancy in only 17 *** the three treatments for dormancy release,15.5℃/12 h broke dormancy the fastest in all accessions and released the most number of plants from *** variation existed between accessions for the speed of dormancy release in the 21.1℃/13 h and 26.6℃/14 h *** third study showed that temperature is the primary inducer for summer dormancy,while longer day length may promote dormancy under inductive ***:This study identified the optimum photothermal for induction and release of summer dormancy in ***,which will help future studies in elucidating the mechanism of summer dormancy.

关键词： controlled environment dormancy induction dormancy release Sandberg bluegrass summer dormancy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

correction to:Effects of chemical sterilization of the culture media,porous membranes and luminosity on in vitro culture of Eucalyptus grandis×Eucalyptus urophylla

引用

Journal of Forestry Research 2022年第5期33卷 1705-1707页

作者： Letícia Vaz Molinari Denys Matheus Santana costa Souza Maria Lopes Martins Avelar Sérgio Bruno Fernandes douglas Santos Gonçalves Júlio cézar Tannure Faria Dulcineia de carvalho Gilvano Ebling Brondani Department of Forestry Sciences Federal University of LavrasLavrasMinas GeraisBrazil

correction to:***://***/10.1007/s11676-020-01240-5 In the original publication of the article,there were errors in the fig 3 and fig *** corrected Figs.3 and 6 are given below:The original article has been corrected.

关键词： corrected porous media

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effects of Myrothecium verrucariaon Ultrastructural Integrity of Kudzu (Pueraria montana var. lobata) and Phytotoxin Implications

引用

American Journal of Plant Sciences 2012年第11期3卷 1513-1519页

作者： Robert E. Hoagland c. douglas Boyette Kevin c. Vaughn Neal D. Teaster Ken Stetina United States Department of Agriculture-Agricultural Research Service (USDA-ARS) Crop Production Systems Research Unit Stoneville USA USDA-ARS Biological Control of Pests Research Unit Stoneville USA.

The fungus Myrothecium verrucaria (Alb. & Schwein.) (MV), originally isolated from diseased sicklepod (Senna obtusifolia L.), has bioherbicial activity against kudzu and several other weeds when applied with low concentrations of the surfactant Silwet L-77. To more fully understand the initial events of MV infection or disease progression, and to improve knowledge related to its mechanism of action, the effects of MV and its product (roridin A) on kudzu seedlings were examined at the ultrastructural level. Ultrastructural analysis of MV effects on kudzu seedlings revealed a rapid (~1 h after treatment) detachment of the protoplast from the cell wall and plasmodesmata appeared to be broken off and retained in the wall. These symptoms occurred well in advance of the appearance of any fungal growth structures. Some fungal growth was observed after severe tissue degeneration (24 to 48 h after treatment), but this occurred primarily at the extra-cellular location with respect to the kudzu tissues. Kudzu seedlings treated with roridin A, a trichothecene produced by the fungus, exhibited some symptoms similar to those induced by the fungus applied in spore formulations with surfactant. The overall results are the first to report the ultrastructural effects of this bioherbicide on plants and suggest that penetration of a phytotoxic substance(s) in the fungal formulation was facilitated by the surfactant, and that roridin A exerts phytotoxicity toward kudzu.

关键词： Bioherbicide Biological Weed control Kudzu Myrothecium verrucaria Ultrastructure Trichothecene

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Management of concomitant hepatocellular carcinoma and chronic hepatitis c: a review

引用

Hepatoma Research 2019年第7期5卷 47-59页

作者： Elizabeth Harrod carlos Moctezuma-Velazquez Ahmet Gurakar Aftab Ala douglas Dieterich Behnam Saberi Icahn School of Medicine at Mount Sinai Division of Liver DiseasesNew YorkNY 10029USA Royal Surrey county Hospital NHS Foundation Trust Dept of Gastroenterology and HepatologyGuildfordSurrey 571122UK University of Surrey Dept of Clinical and Experimental and MedicineGuildfordSurrey GU27XHUK Johns Hopkins University School of Medicine Division of Gastroenterology and Hepatology-Transplant HepatologyBaltimoreMD 21287USA

Our comprehensive review focuses on the treatment of hepatitis c virus in the context of hepatocellular carcinoma and vice versa,highlighting the ongoing complexity of this clinical *** remain multiple unanswered questions when considering the management of these complex patients and,with a rapidly-changing treatment landscape for both chronic hepatitis c and hepatocellular carcinoma,these questions are only going to *** timing,interactions and the impact of one disease condition on the other are vitally important,though guidance generally remains non-specific,suggesting that we make these decisions on a case-by-case *** focus on the current evidence for managing these cases,depending on disease stage and treatment type.

关键词： Hepatocellular carcinoma liver cancer hepatitis c virus direct-acting antiviral agents

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：