检索结果-南通市图书馆

Selection of Rice Genotypes for Salinity Tolerance Through Morpho-Biochemical Assessment

Rice science 2014年第5期21卷 288-298页

作者： md. nasim ali Bhaswati GHOSH Saikat GANTAIT Somsubhra CHAKRABORTY Department of Agricultural Biotechnology Faculty Centre for Integrated Rural Development and Management School of Agriculture and Rural Development Ramakrishna Mission Vivekananda UniversityRamakrishna Mission Ashrama NarendrapurKolkata 700103 India Department of Crop Science Faculty of Agriculture University Putra Malaysia43400 Serdang SelangorMalaysia Sasya Shyamala Krishi Vigyan Kendra Ramakrishna Mission Vivekananda UniversityArapanch Sonarpur Kolkata 700150 India

The present study reported the morpho-biochemical evaluation of 15 selected rice genotypes for salt tolerance at the seedling stage. Growth parameters including shoot length, root length, plant biomass, plant turgid weight, plant dry weight along with relative water content were measured after exposure to saline solution （with electrical conductivity value of 12 dS/m）. Genotypes, showing significant differential responses towards salinity in the fields, were assessed through 14 salinity-linked morpho-biochemical attributes, measured at 14 d after exposure of seedling in saline nutrient solution. Relative water content, chlorophyll a/b, peroxidase activity and plant biomass were identified as potential indicators of salt tolerance. Principal component analysis and successive Hierarchical clustering using Euclidean distance revealed that Talmugur, Gheus, Ghunsi, Langalmura, Sabitapalui, and Sholerpona were promising genotypes for further breeding programmes in rice. The maximum Euclidean distance was plotted between Thavallakanan and Talmugur （7.49）, followed by Thavallakanan and Langalmura （6.82）, indicating these combinations may be exploited as parental lines in hybridization programmes to develop salinity tolerant variety.

关键词： chlorophyll content electrical conductivity Oryza sativa L. peroxidase activity prolinecontent relative water content salinity tolerance sugar content superoxide dismutase

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

Effect of Black Tea Polyphenol on Cell-ECM Interaction and MMP

引用

American Journal of Plant Sciences 2017年第4期8卷 856-866页

作者： Nabanita Bhattacharyya Subhajit Mondal Shuvojit Moulik Sathi Paul Shreoshi Bhattacharrya Alok Kumar Hazra md. nasim ali Anjan Adhikari Amitava Chatterjee Ramakrishna Mission Vivekananda University IRDM Kolkata India B.C.K.V Kalyani India R.G. Kar Medical College Kolkata India

Tea is one of the most widely consumed beverages in the world. Black tea, obtained from the leaves of Camellia sinensis is the preferred beverage in India and in most western countries. Epidemiological studies on black tea and cancer are limited. However, preliminary studies indicate a positive correlation between black tea consumption and a lower incidence of breast and ovarian cancer. In the present communication, we wanted to see the effect of black tea extract and the polyphenol theaflavin on cell-ECM interaction, MMP activity etc. to strengthen the anti-cancer effect of black tea.

关键词： Black Tea Polyphenol MMP ECM Cancer

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

Numerical storm surge model with higher order finite difference method of lines for the coast of Bangladesh

引用

Acta Oceanologica Sinica 2019年第6期38卷 100-116页

作者： Gour Chandra Paul md. Emran ali Department of Mathematics University of RajshahiRajshahi 6205Bangladesh Department of Textile Engineering Northern University BangladeshDhaka 1230Bangladesh

In this study, the method of lines (MOLs) with higher order central difference approximation method coupled with the classical fourth order Runge-Kutta (RK(4,4)) method is used in solving shallow water equations (SWEs) in Cartesian coordinates to foresee water levels associated with a storm accurately along the coast of Bangladesh. In doing so, the partial derivatives of the SWEs with respect to the space variables were discretized with 5-point central difference, as a test case, to obtain a system of ordinary differential equations with time as an independent variable for every spatial grid point, which with initial conditions were solved by the RK(4,4) method. The complex land-sea interface and bottom topographic details were incorporated closely using nested schemes. The coastal and island boundaries were rectangularized through proper stair step representation, and the storing positions of the scalar and momentum variables were specified according to the rules of structured C-grid. A stable tidal regime was made over the model domain considering the effect of the major tidal constituent, M2 along the southern open boundary of the outermost parent scheme. The Meghna River fresh water discharge was taken into account for the inner most child scheme. To take into account the dynamic interaction of tide and surge, the generated tidal regime was introduced as the initial state of the sea, and the surge was then made to come over it through computer simulation. Numerical experiments were performed with the cyclone April 1991 to simulate water levels due to tide, surge, and their interaction at different stations along the coast of Bangladesh. Our computed results were found to compare reasonable well with the limited observed data obtained from Bangladesh Inland Water Transport Authority (BIWTA) and were found to be better in comparison with the results obtained through the regular finite difference method and the 3-point central difference MOLs coupled with the RK(4,

关键词： shallow water equations method of lines higher order finite difference approximation method surge nested scheme

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

Evaluation of Genetic Divergence in Various Potato Genotypes Grown in Bangladesh through Different Traits Assessment

引用

American Journal of Plant Sciences 2023年第11期14卷 1235-1247页

作者： md. Mukhtar Hossain md. Abdul Kaium md. Al Amin Tabaraka Binte ali Nusrat Jahan md.nasim Uddin Department of Crop Science and Technology Faculty of Agriculture Rajshahi University Rajshahi Bangladesh

The goal of the study was to quantify the genetic diversity of different potato varieties. Five groups were named to classify the 25 genres of potatoes as: Cluster I (Lalpakri, Diamond), Cluster II (Hagrai, Green Mountain, G.M.O., Elvera), Cluster III (Atlantic, Shepody, Raja, Fundy, Multa, Granulla, Shibilati, Japanese Red), Cluster IV (Atlas, Brondy, Yucon Gold, Monona, Petrones, Cheroki), and Cluster V (Calwhite, Prelude, Allblue, Russet, Burbank, TPS-67). The highest and lowest genotypes are found in Clusters III and I, respectively. The two groups’ maximum inter-cluster distance (the cluster’s distance between them) demonstrates the enormous diversity between Clusters II & III. Cluster III had the greatest intra-cluster distance (distance within a set), whereas Cluster V had the smallest. In most cases, the distance between gaps was more significant than the distance within the holes, showing greater genetic diversity between different groups’ genotypes. The highest, second highest, and third highest eigenvalues, accompanying the positive canonical values for Vectors I and II of three characteristics: average tuber weight in each plant, the tubers number in each plant, and the eyes number in each tuber, showed the most outstanding contribution to the complete difference between genotypes. Of the nine features, the smaller leaves number in each plant, the shorter plant height, the more minor genotypes, the fewer eyes per tube generated from Cluster I, the maximum height of the plants, the high-quality tubers in each plant, the tubers number in each plant, the fresh weight in each plant, and the leaf number in each plant from Cluster II could be chosen in the role of parents in this program for hybridization. Given the size of the genetic distance, the various characteristics that contribute to the overall difference, and the average population size, Hagrai, Green Mountain, O.M.G., Elvera Cluster II and Cluster I, Lalpakri, and Diamond genotypes can be regarded a

关键词： Genetic Divergence Potato Genotypes Different Traits Cluster Analysis Principal Component Analysis

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

Whole Leea macrophylla ethanolic extract normalizes kidney deposits and recovers renal impairments in an ethylene glycol-induced urolithiasis model of rats

引用

Asian Pacific Journal of Tropical Medicine 2012年第7期5卷 533-538页

作者： Abu nasim Nizami md.Atiar Rahman Nazim Uddin Ahmed md.Shahidul Islam Department of Biochemistry and Molecular Biology University of ChittagongChittagong-4331Bangladesh Department of Biochemistry School of BiochemistryGenetics and MicrobiologyUniversity of KwaZulu-NatalDurban 4000South Africa Bangladesh Council of Scientific and Industrial Research(BCSIR) Chittagong-4220Bangladesh

Objective:To investigate the antilithiatic effect of the whole Leea macrophylla(L macrophylla) Roxb(Leeaeeae) ethanol extract in ediylene glycol-induced urolithiasis model of ***: Forty two seven weeks old male wistar albino rats were randomly divided into two major groups namely:preventive(n=18) and therapeutic(n=24).Preventive group was further subdivided into 3 groups of 6 rats namely:preventive control(PC),preventive lithiatic control(PLC) and preventive lithiatic ***(PLLM).Similarly,therapeutic group was also subdivided into 4 groups of 6 rats namely:therapeutic control(TC),therapeutic lithiatic control(TLC).therapeutic lithitatic L macrophylla(TLLM) and therapeutic lithiatic cystone(TLCYS).The lithiasis was induced by 0.75%(v/v) ethylene glycol in the drinking water of all groups except the PC and TC *** urinary ionic parameters such as calcium,inorganic phosphate,oxalate,magnesium & creatinine and renal morphology were altered by ediylene glycol,which were partially recovered by 14 d preventive and almost fully recovered by 28 d therapeutic intervention trials with L macrophylla extract(500 mg/kg BW daily).Results:Significant difference on recovery was observed between preventive and dierapeutic interventional ***-urolithiatic effect of cystone was significantly(P<0.001) higher than extracts.L macrophylla extract was found nontoxic in the acute toxicity ***:The results of this study demonstrated very promising antiurolithiatic effect of *** extract with preventive and therapeutic treatments in this experimental condition.

关键词： Urolithiasis Ethylene glycol Leea macrophylla Urinary parameter Rats

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

Machine learning model for snow depth estimation using a multisensory ubiquitous platform

引用

Journal of Mountain Science 2022年第9期19卷 2506-2527页

作者： Sofeem nasim Mourad OUSSALAH Björn KLÖVE ali Torabi HAGHIGHI Department of Computer Science and Engineering University of OuluOulu 90570Finland Water Energy and Environmental EngineeringUniversity of OuluOulu 90570Finland

Snow depth estimation is an important parameter that guides several hydrological applications and climate change *** advances in remote sensing technology and enhanced satellite observations,the estimation of snow depth at local scale still requires improved accuracy and *** advances in ubiquitous and wearable technology promote new prospects in tackling this *** this paper,a wearable IoT platform that exploits pressure and acoustic sensor readings to estimate and classify snow depth classes using some machine-learning models have been put ***,the results of Random Forest classifier showed an accuracy of 94%,indicating a promising alternative in snow depth measurement compared to in situ,LiDAR,or expensive large-scale wireless sensor network,which may foster the development of further affordable ecological monitoring systems based on cheap ubiquitous sensors.

关键词： Snow depth Wearable technology Machine learning Random forest classifier

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

Effects of Hydromagnetic and Thermophoresis of Unsteady Forced Convection Boundary Layer Flow over Flat Plates

引用

Journal of Applied Mathematics and Physics 2016年第9期4卷 1756-1776页

作者： md. Jashim Uddin md. Yeakub ali Department of Mathematics Chittagong University of Engineering & Technology Chittagong-4349 Bangladesh Department of Electrical & Electronic Engineering International Islamic University Chittagong Chittagong-4318 Bangladesh

In this paper, we analyze unsteady two dimensional hydromagnetic forced convection boundary layer flow of a viscous incompressible fluid along flat plates with thermophoresis. The potential flow velocity has been taken as a function of the distance x and time t. The governing partial differential equations are transformed to ordinary differential equation by applying local similarity transformation. The resulting similarity equations are then solved numerically for unsteady case, applying Nachtsheim-Swigert shooting iteration technique with six order Runge-Kutta method. The variations in fluid velocity, fluid temperature and species concentration are displayed graphically and discussed for different material parameters entering into the analysis. The effects of the pertinent parameters on the skin-friction coefficient, wall heat transfer coefficient and wall deposition flux rate are also displayed in tabulated form and discussed them from the physical point of view. An analysis of the obtained results shows that the flow field is influenced appreciably by the magnetic field parameter and the thermophoresis particle deposition.

关键词： Forced Convection Hydromagnetic Field Similarity Solution Unsteady Thermophoresis

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

Critical Properties of the Two-Dimensional Villain Model with Ferromagnetic Impurities

引用

World Journal of Mechanics 2017年第6期7卷 167-175页

作者： md. Yeakub ali Department of Mathematics Chittagong University of Engineering & Technology Chittagong Bangladesh

This work investigates the square lattice in the presence of an-ti-ferromagnetic exchange considering the two-dimensional Ising Villain model. A computational scheme is constructed to evaluate the degeneracy of ground states at zero temperature employing the Pfaffian method through perturbation theory. The entropy and canonical spin glass of the considered model are precisely obtained. The critical point between the Villain phase and canonical spin glass phase with the line fit of entropy at the thermodynamic limit is investigated. It is also shown that the transition point of the Villain model lies in the low concentration regime.

关键词： Villain Entropy Critical Point Square Lattice

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

Graph-Directed Coalescence Hidden Variable Fractal Interpolation Functions

引用

Applied Mathematics 2016年第4期7卷 335-345页

作者： md. nasim Akhtar M. Guru Prem Prasad Department of Mathematics Indian Institute of Technology Guwahati Guwahati India

Fractal interpolation function (FIF) is a special type of continuous function which interpolates certain data set and the attractor of the Iterated Function System (IFS) corresponding to a data set is the graph of the FIF. Coalescence Hidden-variable Fractal Interpolation Function (CHFIF) is both self-affine and non self-affine in nature depending on the free variables and constrained free variables for a generalized IFS. In this article, graph directed iterated function system for a finite number of generalized data sets is considered and it is shown that the projection of the attractors on is the graph of the CHFIFs interpolating the corresponding data sets.

关键词： Iterated Function System Graph-Directed Iterated Function System Fractal Interpolation Functions Coalescence Hidden Variable FIFs

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

Vector Autoregressive （VAR） Modeling and Projection of DSE

引用

Chinese Business Review 2015年第6期14卷 273-289页

作者： Ahammad Hossain md. Kamruzzaman md. Ayub ali Varendra University Rajshahi Bangladesh University of Rajshahi Rajshahi Bangladesh

In this paper, vector autoregressive （VAR） models have been recognized for the selected indicators of Dhaka stock exchange （DSE）. Bangladesh uses the micro economic variables, such as stock trade, invested stock capital, stock volume, current market value, and DSE general indexes which have the direct impact on DSE prices. The data were collected for the period from June 2004 to July 2013 as the basis on daily scale. But to get the maximum explorative information and reduction of volatility, the data have been transformed to the monthly scale. The outliers and extreme values of the study variables are detected through box and whisker plot. To detect the unit root property of the study variables, various unit root tests have been applied. The forecast performance of the different VAR models is compared to have the minimum residual. Moreover, the dynamics of this financial market is analyzed through Granger causality and impulse response analysis.

关键词： vector autoregressive (VAR) model impulse response analysis Granger causality

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

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

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：