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Tree assemblages and diversity patterns in Tropical Juri Forest,Bangladesh

Journal of Forestry Research 2015年第1期26卷 159-169页

作者： Swapan Kumar Sarker Muhammad Nur-Un-Nabi Md.Mohasinul Haque Mahmuda Sharmin sanjay saha sonet Sourav Das Niamjit Das Department of Forestry and Environmental Science Shahjalal University of Science & Technology

Juri is a biodiversity-rich primary forest in Bangladesh, which remains ecologically unexplored. We identified tree species and examined the richness, alpha（a）diversity and floristic similarity patterns within the identified communities. Vegetation and environmental data were sampled in 120（0.04 ha） study plots. Tree communities were delimited by two-way indicator species analysis（TWINSPAN）. In total, 78 tree species of 35 families and58 genera were identified. TWINSPAN identified six tree communities： A—Tricalysia singularis; B—Kydia calycina-Castanopsis tribuloides; C—Polyalthia simiarum-Duabanga grandiflora; D—Ficus roxburghii; E—Artocarpus lacucha; F—Artocarpus lacucha. Mean richness, Shannon and Gini-Simpson indices were highest for the Polyalthia simiarum-Duabanga grandiflora community, while Ficus roxburghii showed lowest diversity. Significant differences（p = 0.05） in three diversity indices were recorded between Polyalthia simiarum-Duabanga grandiflora and Ficus roxburghii. Tree compositional similarity was greatest between Kydia calycina-Castanopsis tribuloides and Polyalthia simiarum-Duabanga grandiflora（0.712）.

关键词： Two-way indicator species analysis(TWINSPAN) Richness index Shannon index Gini-Simpson index Tropical forest Conservation

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孟加拉的非木材林产品在美容业的应用(英文)

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Journal of Forestry Research 2008年第1期19卷 72-78页

作者： Sayma Akhter Md. Abdul Halim Md. Shawkat Islam Sohel Swapan Kumar Sarker Mohammad Shaheed Hossain Chowdhury sanjay saha sonet Department of Forestry and Environmental Science Shahjalal University of Science and Technology School of Geography and Environmental Science Monash UniversityClaytan CampusVictoria3800 Australia Forest Policy Laboratory Department of Forest ScienceFaculty of AgricultureShinshu University

在查阅大量非木材林产品文献的基础上,作者总结了非木材林产品在孟加拉美容业的应用情况。本文评述了孟加拉的非木材产品在身体,面部和头发等的美容方面的应用,并对可用于美容产品的非木材树种进行归纳总结。本研究可以作为美容产品应... 详细信息

在查阅大量非木材林产品文献的基础上,作者总结了非木材林产品在孟加拉美容业的应用情况。本文评述了孟加拉的非木材产品在身体,面部和头发等的美容方面的应用,并对可用于美容产品的非木材树种进行归纳总结。本研究可以作为美容产品应用的可持续发展的原则指导生物多样性的保护。为了更有效的管理这些资源,了解产品的利用和收获的模式是非常必要的。表13参23。

关键词：森林木材孟加拉国环境保护

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Robotic ultrasound:An initial feasibility study

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World Journal of Methodology 2022年第4期12卷 274-284页

作者： Sheragaru Hanumanthappa Chandrashekhara Krithika Rangarajan Ayushi Agrawal sanjay Thulkar Shivanand Gamanagatti Deepak Raina Subir Kumar saha Chetan Arora Department of Radiodiagnosis All India Institute of Medical SciencesNew Delhi 110029DelhiIndia Department of Mechanical Engineering Indian Institute of TechnologyDelhi 110016India Department of Computer Science Indian Institute of TechnologyDelhi 110016India

BACKGROUND Performing ultrasound during the current pandemic time is quite *** reduce the chances of cross-infection and keep healthcare workers safe,a robotic ultrasound system was developed,which can be controlled *** will also pave way for broadening the reach of ultrasound in remote distant rural areas as *** To assess the feasibility of a robotic system in performing abdominal ultrasound and compare it with the conventional ultrasound *** A total of 21 healthy volunteers were *** was performed in two settings,using the robotic arm and conventional hand-held *** acquired were analyzed by separate *** Our study showed that the robotic arm model was feasible,and the results varied based on the organ *** liver images showed no significant *** other organs,the need for repeat imaging was higher in the robotic arm,which could be attributed to the radiologist’s learning curve and ability to control the haptic *** doctor and volunteer surveys also showed significant comfort with acceptance of the technology and they expressed their desire to use it in the *** study shows that robotic ultrasound is feasible and is the need of the hour during thepandemic.

关键词： Robotic ultrasound Telemedicine Ultrasonography Haptic device Pandemic

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Liquid chromatography-tandem mass spectrometry method for the estimation of adefovir in human plasma:Application to a pharmacokinetic study

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Journal of Pharmaceutical Analysis 2015年第3期5卷 190-199页

作者： Dipanjan Goswami sanjay Gurule Arabinda saha Poonam Vats Arshad Khuroo Tausif Monif Sun Pharmaceutical industries Ltd. Department of Clinical Pharmacology and Pharmacokinetics Ranbaxy LaboratoriesLtd.

An analytical method based on solid phase extraction was developed and validated for analysis of adefovir in human plasma. Adefovir-d4 was used as an internal standard and Synergi MAX RP80A （150rnmx4.6mm. 41am） column provided the desired chromatographic separation of compounds followed by detection with mass spectrometry. The method used simple isocratic chromato- graphic condition and mass spectrometric detection in the positive ionization mode. The calibration cuives were linear over the range of 0.50-42.47 ng/mL with the lower limit of quantitation validated at 0.50 ng/mL. Matrix effect was assessed by post-column infusion experiment to monitor phospholipids and post- extraction addition experiment was performed. The degree of matrix effect for adefovir was determined as 7.5% and ion-enhancement in five different lots of human plasma was 7.1% and had no impact on study samples analysis with 4.5 rain run time. The intra- and inter-day precision values were within 7.7% and 7.8%, respectively, for adefovir at the lower limit of quantification level. Validated bioanalytical method was successfully applied to clinical sample analysis.

关键词： Liquid chromatography-tandem massspectrometry Solid phase extraction Pharmacokinetic study

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Stress and Strain Accumulation Due to a Long Dip-Slip Fault Movement in an Elastic-Layer over a Viscoelastic Half Space Model of the Lithosphere-Asthenosphere System

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International Journal of Geosciences 2013年第3期4卷 549-557页

作者： sanjay Sen Subrata Kr. Debnath Department of Applied Mathematics University of Calcutta Kolkata India Department of Basic Science and Humanities Meghnad Saha Institute of Technology(A Unit of Techno India Group) Kolkata India

Most of the earthquake faults in North-East India, China, mid Atlantic-ridge, the Pacific seismic belt and Japan are found to be predominantly dip-slip in nature. In the present paper a dip-slip fault is taken situated in an elastic layer over a viscoelastic half space representing the lithosphere-asthenosphere system. A movement of the dip-slip nature across the fault occurs when the accumulated stress due to various tectonic reasons e.g. mantle convection etc., exceeds the local friction and cohesive forces across the fault. The movement is assumed to be slipping in nature, expressions for displacements, stresses and strains are obtained by solving associated boundary value problem with the help of integral transformation and Green’s function method and a suitable numerical methods is used for computation. A detailed study of these expressions may give some ideas about the nature of stress accumulation in the system, which in turn will be helpful in formulating an earthquake prediction programme.

关键词： Aseismic Period Dip-Slip Fault Earthquake Prediction Mantle Convection Plate Movements Stress Accumulation Tectonic Process Viscoelastic-Layered Model

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