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Streptomyces sp. RP1A-12 mediated control of peanut stem rot caused by Sclerotium rolfsii

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Journal of Integrative Agriculture 2018年第4期17卷 892-900页

作者： simi Jacob Ramgopal Rao Sajjalaguddam Hari Kishan Sudini International Crops Research Institute for the Semi-Arid Tropics Patancheru 502324 India Jawaharlal Nehru Technological University Kukatpally Hyderabad 500085 India Biocon Academy Biocon House Bangalore 560100 India

Sclerotium rolfsii Sacc. is a destructive soilborne fungal pathogen with a wide host range that includes peanuts. Biological control offers an interesting alternative to fungicides for sustainable management of soilborne diseases. The current investigation is aimed at evaluating one potential biocontrol agent Streptomyces sp. RP1 A-12 for growth promotion and the management of peanut stem rot disease caused by S. rolfsii under field conditions. Preliminary studies conducted under in vitro and the greenhouse conditions showed promising results against the stem rot pathogen. Further in vitro and pot experiments conducted to assess Streptomyces sp. RP1 A-12 for its growth promoting abilities using whole organisms have shown an increase in seed germination, root and shoot length. Other parameters like nodule number and plant biomass were also significantly increased over control treatments indicating that the test bioagent possesses growth promoting abilities along with disease suppression capabilities. Subsequently field studies were carried out for two consecutive rainy seasons. The bioagent was applied as whole organism and partially purified crude metabolites. Results indicate the bioagent reduced stem rot disease incidence by 64–67% and 22–49% respectively in two field trials conducted with notable increase in yield. Partially purified Streptomyces sp. RP1 A-12 metabolites exhibited an even greater effect in reducing the incidence and severity of stem rot compared to the pathogen inoculated control.

关键词： peanut stem rot Sclerotium rolfsii Streptomyces sp. crude metabolites

两株促进植物生长菌及其混合菌剂对888速生白菜的促生长作用

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分子植物育种 2024年第14期22卷 4681-4691页

作者：张文菲潘思蜜李金秋姜明国王金子广西民族大学海洋与生物技术学院广西多糖材料与改性重点实验室海洋生物资源保护与利用重点实验室南宁530008

为了寻找对作物有促生高效的混合菌剂,本研究利用从广西石角红树林筛选的两株菌株(L113和L35)建立以糖蜜废弃物为载体的混合菌剂,采用钼锑抗比色试验筛选最佳混合菌株配方;通过正交试验确定复合菌株的最佳发酵条件;通过盆栽实验对混合... 详细信息

为了寻找对作物有促生高效的混合菌剂,本研究利用从广西石角红树林筛选的两株菌株(L113和L35)建立以糖蜜废弃物为载体的混合菌剂,采用钼锑抗比色试验筛选最佳混合菌株配方;通过正交试验确定复合菌株的最佳发酵条件;通过盆栽实验对混合菌株对888速生白菜的促生作用进行验证。钼锑抗实验结果表明,菌株L113和L35配比为1∶1(体积比)、接种量为3%(体积比)进行配制的混合菌株的溶磷量为89.12 mg/L,此条件下配制的混合菌株的磷含量最佳。正交试验结果表明,配制的混合菌株最佳发酵条件为温度30℃,p H值为7.5,发酵时间为72 h,实验验证复合菌株的混菌数为1×109CFU/mL。盆栽试验结果表明,菌株L113和L35混合对白菜具有良好的促生效果,施用混合菌液白菜幼苗的株高、鲜重、干重和叶片数分别较清水对照(CK1)显著提高19.35%、24.22%、33.21%和28.60%,分别较无菌培养基对照(CK2)提高4.22%、16.50%、22.22%和16.36%,说明通过两株混合菌液配制发酵液培养的白菜生长状况优于对照组。本实验以糖蜜为培养基研制的混合菌剂,为复合菌剂的进一步产业化生产和推广提供了菌株配方和重要的实验数据支持。

关键词：混合菌种糖蜜废弃物发酵体系构建白菜促生

Progress on Preparation and Characteristics of Ultra-lightweight Foam Concrete

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China's Refractories 2020年第4期29卷 1-5页

作者： ZHENG Juanrong ZHANG simi ZHAO Zhenbo School of Civil Engineering Zhengzhou UniversityZhengzhou 450002China Zhengzhou Gongda New Building Material and High-Tech Co. Ltd.Zhengzhou 450002China

With the increase in global warming,building energy saving becomes a principal policy for most *** 70%of the energy consumption loss of buildings is through the external walls of the ***-lightweight foam concretes with dry density of 150-300 kg·m-3 as the thermal insulation materials have been commercially prepared and used in building insulation engineering in *** paper reports the raw materials and procedures for preparation of ultralightweight foam concretes by chemical foaming(UFC-C)and physical foaming(UFC-P).The characteristics of the air-voids structure,the mechanical properties,the water absorption,the thermal conductivity and the fire resistance of UFC-C and UFC-P were summarized in this *** on existing research progress,the future research works were presented.

关键词： ultra-lightweight micron-pore air-voids structure mechanical properties water absorption thermal insulation fire resistance

Effi ciency of phosphorus accumulation by plankton,periphyton developed on submerged artifi cial substrata and metaphyton:in-situ observation in two shallow ponds

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Journal of Oceanology and Limnology 2021年第3期39卷 928-945页

作者： Marija PEĆIĆ Slađana POPOVIĆ Vesna MILUTINOVIĆ Gordana SUBAKOV simiĆ Ivana TRBOJEVIĆ Dragana PREDOJEVIĆ Institute of Botany and Botanical Garden‘Jevremovac’ Faculty of BiologyUniversity of BelgradeBelgrade 11000Serbia Institute of Chemistry Technology and MetallurgyScientific InstitutionNational InstituteCenter for Ecology and TechnoeconomicsUniversity of BelgradeBelgrade 11000Serbia Institute of Public Health of Belgrade Belgrade 11000Serbia

Phosphorus overenrichment of shallow ponds prevailing in wetlands leads to their eutrophication causing the collapse of those vulnerable *** potential of phosphorus accumulation by periphyton developed on artificial substrata has been investigated in two shallow ponds(Bara?ka and?iroki Rit)in northwest Serbia and compared to the same ability of plankton and *** periphyton substrate carrier has been submerged from May to *** continuously(CS)and monthly developed(MS)periphyton were *** component of all investigated communities has been qualitatively *** accumulation of only 14.7 mg TP/m^(2) was recorded in three-month exposed periphyton *** exposed from July to August reached maximal 12.7 mg TP/m^(2).Plankton community that was characterized by more diverse and abundantly developed algal component was more effective in phosphorus accumulation(0.7 mg/g dry weight)in comparison with dominantly inorganic and diatom-dominated periphyton in Bara?*** conditions caused by recent revitalization(dredging organic matter and mud from pond basin—redigging)as well as rapid desiccation of?iroki Rit disabled making an unambiguous conclusion about the efficiency of phosphorus accumulation among different communities,but suggested slight potential of phosphorus harvesting by metaphyton in this *** to the shorter exposure time that brings the reduced risk of unpredictable changes in the ecosystem,as well as the considerable amount of accumulated phosphorus,large-scale application of one-month exposed periphyton developed on artificial substrates would be more advisable for phosphorus harvesting in nutrient affected shallow ponds.

关键词： periphyton phosphorus accumulation shallow ponds (phyto)plankton metaphyton eutrophication

Sedimentation History of Neogene Lacustrine Sediments of Sueoka Bela Stena Based on Geochemical Parameters(Valjevo-Mionica Basin,Serbia)

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Acta Geologica Sinica(English Edition) 2008年第6期82卷 1201-1212页

作者： Aleksandra AJNOVI Vladimir simi Branimir JOVANIEVI Olga CVETKOVI Radovan DIMITRIJEVI Nenad GRUBIN Center of Chemistry IChTM11000 BelgradeSerbia Faculty of Mining and Geology University of Belgrade11000 BelgradeSerbia Faculty of Chemistry University of Belgrade11000 BelgradeSerbia Rio Tinto Exploration Bulevar A VNOJ-a 7111000 BelgradeSerbia

Sediments of the western part of the Valjevo-Mionica basin （Serbia） were examined both geochemically and mineralogically to explain, on the basis of their sedimentologicai characteristics, the causes of changes in their qualitative and quantitative composition. A total of 62 samples obtained from the drillhole at depths up to 400 m was investigated. Using correlation of the obtained data, six geochemical zones were defined, two of which being specially distinguished by their mineralogical, geochemical and sedimentological characteristics. The first one, upper zone A, consists of banded marlstones interbedded with clay and oil shales and is characterized by presence of analcite and searlesite. These minerals and very high contents of Na20 indicate sedimentation in alkaline conditions with increased salinity in arid climate. That provided pronounced water stratification, as well as higher bioproductivity in the basin and sedimentary organic matter preservation. Therefore, the zone A sediments are characterized by high organic matter contents of the type which provides good potential for production of liquid hydrocarbons. Another specific zone, zone F, contains sediments with very high MgO, K2O and Li concentrations. Their geochemical correlation, as well as almost complete absence of illite in this zone, indicates the presence of interstratified clay mineral type illite-saponite （lithium-bearing Mg-smectite）.

关键词： lacustrine sediments geochemistry searlesite statistical analysis

Si-Assisted Solidification Path and Microstructure Control of 7075 Aluminum Alloy with Improved Mechanical Properties by Selective Laser Melting

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Acta Metallurgica Sinica(English Letters) 2022年第9期35卷 1424-1438页

作者： Junwei Sha Meixian Li Lizhuang Yang Xudong Rong Bowen Pu Dongdong Zhao simi Sui Xiang Zhang Chunnian He Jianglin Lan Naiqin Zhao School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials Tianjin UniversityTianjin300350China Collaborative Innovation Center of Chemical Science and Engineering Tianjin300350China Key Laboratory of Advanced Ceramics and Machining Technology Ministry of EducationTianjin300350China Central Iron and Steel Research Institute(CISRI) Beijing100081China

The construction and application of traditional high-strength 7075 aluminum alloy(Al7075) through selective laser melting(SLM) are currently restricted by the serious hot cracking phenomenon. To address this critical issue, in this study, Si is employed to assist the SLM printing of high-strength Al7075. The laser energy density during SLM is optimized, and the eff ects of Si element on solidification path, relative density, microstructure and mechanical properties of Al7075 alloy are studied systematically. With the modified solidification path, laser energy density, and the dense microstructure with refined grain size and semi-continuous precipitates network at grain boundaries, which consists of fine Si, β-MgSi, Q-phase and θ-AlCu, the hot cracking phenomenon and mechanical properties are eff ectively improved. As a result, the tensile strength of the SLM-processed Si-modified Al7075 can reach 486 ± 3 MPa, with a high relative density of ~ 99.4%, a yield strength of 291 ± 8 MPa, fracture elongation of(6.4 ± 0.4)% and hardness of 162 ± 2(HV) at the laser energy density of 112.5 J/mm~3. The main strengthening mechanism with Si modification is demonstrated to be the synergetic enhancement of grain refinement, solution strengthening, load transfer, and dislocation strengthening. This work will inspire more new design of high-strength alloys through SLM.

关键词： Selective laser melting(SLM) 7075 aluminum alloy High-strength alloy Microstructure control Solidification path

NAFLD Epidemiology, Emerging Pharmacotherapy, Liver Transplantation Implications and the Trends in the United States

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Journal of Clinical and Translational Hepatology 2020年第2期8卷 215-221页

作者： Chiranjeevi Gadiparthi Moshe spatz simi Greenberg Umair Iqbal Sowjanya Kanna Sanjaya K Satapathy Arkady Broder Aijaz Ahmed Division of Gastroenterology Hepatology and Clinical NutritionSaint Peter’s University HospitalNew BrunswickNJUSA Rutgers Robert Wood Johnson Medical School PiscatawayNJUSA Nova Southeastern University College of Osteopathic Medicine DavieFLUSA Geisinger Commonwealth School of Medicine DanvillePAUSA Division of Gastroenterology Allegheny Health NetworkTarentumPAUSA Northwell Health Division of Hepatology&Sandra Atlas Bass Center for Liver DiseasesManhassetNYUSA Stanford University School of Medicine Division of Gastroenterology and HepatologyStanfordCAUSA

Nonalcoholic fatty liver disease (NAFLD) is a hepatic mani-festation of metabolic syndrome. The spread of obesity worldwide in pandemic proportions has led to a rapid rise of NAFLD in developed and developing countries alike. There are no approved pharmacological agents to treat steatohepatitis or advanced fibrosis but obeticholic acid recently has shown some promise in phase III trial. Currently, NAFLD is the number one etiology for simultaneous liver and kidney trans-plantation in the USA, second most common indication for liver transplantation (LT) and projected to become number one very soon. LT for NAFLD poses unique challenges, as these patients are generally older, obese and more likely to have a number of metabolic risk factors. Bariatric surgery is an option and can be considered if a structured weight loss program does not achieve the sustained weight loss goal. Comprehensive cardiovascular risk assessment and aggres-sive management of comorbid conditions are crucial in the LT evaluation process to improve post-transplant survival. Re-current nonalcoholic steatohepatitis after LT is not uncom-mon, and thus warrants primary and secondary prevention strategies through a multidisciplinary approach. Prevalence of NAFLD in a donor population is a unique and growing concern that limits the access to quality liver grafts.

关键词： NAFLD NAFL NASH Liver transplantation

Non-iterative parameter estimation of the 2R-1C model suitable for low-cost embedded hardware

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Frontiers of Information Technology & Electronic Engineering 2020年第3期21卷 476-491页

作者： Mitar simi? Zdenka BABI? Vladimir RISOJEVI? Goran MSTOJANOVI? Faculty of Electrical Engineering University of Banja LukaBanja Luka 78000Bosnia and Herzegovina Faculty of Technical Sciences University of Novi SadNovi Sad 21000Republic of Serbia

Parameter estimation of the 2 R-1 C model is usually performed using iterative methods that require high-performance processing ***,there is a strong motivation to develop less time-consuming and more power-efficient parameter estimation *** low-complexity algorithms would be suitable for implementation in portable microcontroller-based *** this study,we propose the quadratic interpolation non-iterative parameter estimation(QINIPE)method,based on quadratic interpolation of the imaginary part of the measured impedance,which enables more accurate estimation of the characteristic *** 2 R-1 C model parameters are subsequently calculated from the real and imaginary parts of the measured impedance using a set of closed-form *** analysis conducted on the impedance data of the 2 R-1 C model obtained in both simulation and measurements shows that the proposed QINIPE method reduces the number of required measurement points by 80%in comparison with our previously reported non-iterative parameter estimation(NIPE)method,while keeping the relative estimation error to less than 1%for all estimated *** non-iterative methods are implemented on a microcontroller-based device;the estimation accuracy,RAM,flash memory usage,and execution time are *** show that the QINIPE method slightly increases the execution time by 0.576 ms(about 6.7%),and requires 24%(1.2 KB)more flash memory and just 2.4%(32 bytes)more RAM in comparison to the NIPE ***,the impedance root mean square errors(RMSEs)of the QINIPE method are decreased to 42.8%(for the real part)and 64.5%(for the imaginary part)of the corresponding RMSEs obtained using the NIPE ***,we compared the QINIPE and the complex nonlinear least squares(CNLS)estimation of the 2 R-1 C model *** results obtained show that although the estimation accuracy of the QINIPE is somewhat lower than the estimation accuracy of the CNLS,

关键词： 2R-1C model Embedded systems Parameter estimation Non-iterative methods Quadratic interpolation

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基于互联网的图书馆信息系统的设计和实现

基于互联网的图书馆信息系统的设计和实现

作者： simi NELI（西米）武汉理工大学

学位级别：硕士

基于Web的信息系统通过Internet来为用户或其它系统提供信息服务,随着Web技术的不断发展,这类系统越来越普遍。学习和研究Web信息系统的开发方法,在当前具有重要的现实意义,有很大的实用性。本文是一个系统分析与设计报告。以一... 详细信息

基于Web的信息系统通过Internet来为用户或其它系统提供信息服务,随着Web技术的不断发展,这类系统越来越普遍。学习和研究Web信息系统的开发方法,在当前具有重要的现实意义,有很大的实用性。本文是一个系统分析与设计报告。以一个虚构的图书馆信息系统的开发为例子,学习并研究Web信息系统的开发方法,包括需求分析、系统设计和实现的方法。第2章介绍需求分析。第3章介绍系统设计,详细介绍了图书馆系统的数据库设计,给出了概念模型和逻辑模型。为了实现基于Web的图书馆信息系统,本文选择了Microsoft的产品作为主要技术平台和工具;第4章较详细地介绍和分析了这些实现技术,包括：Internet Information Services （ⅡS）, ***, MySQL, ADO等,还分析了一些应用开发方法。上述学习和研究工作,为下一步系统的具体实现打下了良好的技术基础。

关键词：基于Web的信息系统数据库设计 *** IIS MySQL