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Effect of different pre-sowing treatments on seed germination percentage and growth performance of Acacia auriculiformis

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Journal of Forestry Research 2011年第2期22卷 183-188页

作者： Md.Salim Azad Mizanur Rahman manik Md.Shamin Hasan Md.Abdul Matin Forestry and Wood Technology Discipline Khulna University

Seed morphology,germination and seedlings growth of Acacia auriculiformis were *** experiment was conducted in the nursery of Forestry and Wood Technology Discipline,Khulna University,*** seeds of the species were collected from healthy trees of road side plantation from different areas of Khulna District,Bangladesh and treated with five pre-sowing treatments（control,immersion in cold water,immersion in hot water,scarification with sand paper and immersion in concentrated H2SO4）.The average length,breadth and thickness were found to be（0.58±0.017） cm,（0.44±0.007） cm and（0.20±0.089） cm,*** was conducted in polybags with a mixture of top soil,coconut husk,coarse sand,and fine sand in a ratio of 3：4：1：*** reveal that pre-sowing treatments influences the germination rates of seeds that significantly increase the percentage germination compared with those in control（43%） and cold water treatment（52%）.The highest germination success rate was found 83% in hot water treatment followed by 78% in scarification with sand paper,and 75% with immersion in *** started from 7 to 12 days and completed between 28 and 35 days period in all *** showed the significant difference（p0.05） among the treatments in seed germination,but no significant difference among treatment with regard to starting day,closing day and total germination *** case of height and diameter growth,seedlings originated from the seeds with hot water treatment shows significantly higher in wet season（from May to July）.Hot water treatment can be recommended on seed germination of the species in rural Bangladesh.

关键词： seed germination seed dormancy pre-sowing treatment seedling growth Acacia auriculiformis

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Improvement of electrical and photovoltaic properties of methyl red dye based photoelectrochemical cells in presence of single walled carbon nanotubes

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Frontiers of Optoelectronics 2015年第3期8卷 289-297页

作者： Sujata CHAKRABORTY Nabin Baran manik Condensed Matter Physics Research Center Department of Physics Jadavpur University Kolkata 700032 India

In this work, we investigated the effect of single walled carbon nanotubes （SWCNT） on the electrical and photovoltaic properties of methyl red （MR） dye based photoelectrochemical cell （PEC）. MR dye based PEC with LiCl04 as ion salt were fabricated with and without mixing SWCNT. The cells were characterized through electrical and optical measurements. The performance of the devices changed drastically in presence of SWCNT. The transition voltage and trap energy of the cells were estimated from the steady-state dark current voltage （I-V） analysis. The transition voltage and trap energy decreased for MR dye cell in presence of SWCNT. Open circuit voltage （Voc）, short circuit current （Jsc）, fill factor （FF） and power conversion efficiency （v/） increased due to the addition of SWCNT. Further measurement of the transient photo- current showed that the growth and decay of photocurrent was quite faster in presence of SWCNT. The photocurrent decay with time was fitted for both the cells and found to follow a power law relation which indicates dispersive transport mechanism with exponential trap states distrib- uted in between lowest unoccupied molecular orbital （LUMO） and highest occupied molecular orbital （HOMO） levels. Possible interpretation is done on the lowering of trap energy with the photocurrent. These results suggest that SWCNT lowers the trap energy of the cells by providing efficient percolation pathways for the conduction of charges. It is expected that due to lowering of trap energy the residing time of the free carriers within the traps decreases. In other words, it may also be said that the charge recombination decreases. These factors affect the overall conduction of charges and improve the electrical and photovoltaic properties.

关键词： methyl red (MR) single walled carbon nanotubes (SWCNT) photoelectrochemical cell (PEC) trap energy percolation pathways

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Modeling Inflation in Bangladesh

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Open Journal of Statistics 2020年第6期10卷 998-1009页

作者： Mohammad Lutfor Rahman Mynul Islam manik Roy Institute of Statistical Research and Training (ISRT) University of Dhaka Dhaka Bangladesh

Inflation has a substantial impact on an economy because it affects the financial value of money and stability in the economy. Government and non-govern- ment policies might be hindered due to the excessive rate of inflation. This paper aims to model and forecast inflation by the Box-Jenkins autoregressive integrated moving average (ARIMA) technique using annual time series data on inflation from 1987 to 2017 in Bangladesh. It is found that ARIMA (2, 1, 0) model is the best optimal to forecast inflation for a period of up to eight years. Graphical tools, as well as theoretical tests such as Ljung-Box, Shapiro-Wilk, and runs tests have been used in the model diagnostics.

关键词： ARIMA Inflation Forecasting Model Validity Model Diagnostics Bangladesh

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Comparative efficacy of secukinumab against adalimumab and infliximab in patients with moderate-to-severe plaque psoriasis

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Chinese Medical Journal 2022年第1期135卷 11-19页

作者： Ran Pan Xiaolun Wang Min Shu Jaydeep Das manik Kalra Zhidong Wang Beijing Novartis Pharma Co.Ltd. ShanghaiChina Novartis Healthcare Pvt.Ltd. HyderabadIndia

Background: Psoriasis is a common, chronic, immune-mediated inflammatory skin disease with increased epidermal proliferation. The objective of this review was to systematically identify the evidence and perform a network meta-analysis (NMA) to estimate the relative efficacy of secukinumab (SEC) against adalimumab (ADA) and infliximab (INF) for the treatment of moderate-to-severe plaque ***: A systematic literature review (SLR) was conducted according to a pre-specified protocol to identify relevant studies. Initially, the databases were searched from database inception till June 2013, and the SLR was updated in April 2020. The eligibility criteria included adult patients (≥18 years old) with moderate-to-severe plaque psoriasis, and the SLR included randomized controlled trials (RCTs). The comparators of interest were SEC, ADA, INF, and placebo (PLA), while outcomes of interest were Psoriasis Area and Severity Index (PASI) (50, 75, and 90) at weeks 12, 16, and 24. A Bayesian NMA for PASI was utilized with a framework that evaluated the probability of PASI responses in different categories of PASI thresholds within a single ***: A total of 23 RCTs that assessed the efficacy of SEC, ADA, and INF in patients with moderate-to-severe plaque psoriasis were identified. At 12 weeks, SEC was associated with a significantly better response compared with PLA and ADA for PASI 75 and 90, while response results were comparable against INF. At 12 weeks, risk ratio (95% confidence interval) derived from NMA for SECvs. ADA and INF for PASI 75 was 1.35 (1.19, 1.57) and 1.01 (0.90, 1.18), respectively. At the 16-week and 24-week time interval, SEC was significantly better than PLA, ADA, and INF for PASI 75 and ***: Efficacy of SEC in the treatment of patient populations with moderate-to-severe plaque psoriasis is well demonstrated through NMA.

关键词： Moderate-to-severe plaque psoriasis Secukinumab against adalimumab and infliximab Indirect comparison PASI response

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Dynamic Promotional Resource Allocation for Segment Specific and Spectrum Effect of Promotion for a Product Line Incorporating Repeat Purchase Behavior

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American Journal of Operations Research 2013年第3期3卷 350-362页

作者： Prakash Chandra Jha Prerna manik Anshu Gupta Department of Operational Research University of Delhi Delhi India SBPPSE Dr. B.R. Ambedkar University Delhi India

Promotion is an essential element in the marketing mix. It is used by businesses to inform, influence and persuade customers to adopt the products and services they offer. Without promotion, business would be stagnant and lack substantial growth because the brands would have low visibility in the market. Moreover, today’s vast and assorted markets comprise of customers with different needs and varied behavior. So it is rarely possible for companies to satisfy all customers by treating them alike. Thus there arises a need to divide the market into segments having customers with similar traits/characteristics. After identifying appropriate market segments, firms can design differentiated promotional campaigns for each segment. At the same time there can be a mass market promotional campaign that reaches different segments with a fixed spectrum. Also since promotional effort resources are limited, one must use them judiciously. In this paper, we formulate mathematical programming problem under repeat purchase scenario, which optimally allocates mass promotional effort resources and differentiated promotional effort resources across the segments dynamically in order to maximize the overall sales obtained from multiple products of a product line under budgetary and minimum sales aspiration level constraint on each product under consideration in each segment. The planning horizon is divided into multi periods, the adoption pattern of each product in each segment is observed in every subinterval and accordingly promotional effort allocations are determined for the next period till we reach the end of planning period. The optimization model has been further extended to incorporate minimum aspiration level constraints on total sales for each product under consideration from all the segments taken together. The non linear programming problem so formulated is solved using differential evolution approach. A numerical example has been discussed to illustrate applicability of the

关键词： Market Segmentation Differentiated Market Promotion Mass Market Promotion Spectrum Effect Promotional Effort Allocation Repeat Purchase Product Line Non Linear Programming Problem Differential Evolution

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Synthesis and Characterization of Co<sub>3</sub>O<sub>4</sub>Thin Film

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Soft Nanoscience Letters 2012年第1期2卷 1-7页

作者： Vikas Patil Pradeep Joshi manik Chougule Shashwati Sen 不详

Nanosized Co3O4 thin films were prepared on glass substrates by using sol-gel spin coating technique. The effect of annealing temperature (400°C - 700°C) on structural, morphological, electrical and optical properties of Co3O4 thin films were studied by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Electrical conductivity and UV-visible Spectroscopy (UV-Vis). XRD measurements show that all the films are nanocrystallized in the cubic spinel structure and present a random orientation. Six prominent peaks, corresponding to the (111) phase (2θ ≈ 18.90°), (220) phase (2θ ≈ 31.29°), (311) phase (2θ ≈ 36.81°), (222) phase (2θ ≈ 38.54°), (400) phase (2θ ≈ 44.80°), (511) phase (2θ ≈ 59.37°) and (440) phase (2θ ≈ 65.27°) appear on the diffractograms. The crystallite size increases with increasing annealing temperature. These modifications influence the optical properties. The morphology of the sol gel derived Co3O4 shows nanocrystalline grains with some overgrown clusters and it varies with annealing temperature. The optical band gap has been determined from the absorption coefficient. We found that the optical band gap energy decreases from 2.58 eV to 2.07 eV with increasing annealing temperature between 400°C - 700°C. These mean that the optical quality of Co3O4 films is improved by annealing. The dc electrical conductivity of Co3O4 thin films were increased from 10–4 to 10–2 (Ω.cm)–1 with increase in annealing temperature. The electron carrier concentration (n) and mobility (μ) of Co3O4 films annealed at 400°C - 700°C were estimated to be of the order of 2.4 to 4.5 × 1019 cm–3 and 5.2 to 7.0 × 10–5 cm2.V–1.s–1 respectively. It is observed that Co3O4 thin film annealing at 700°C after deposition provide a smooth and flat texture suited for optoelectronic applications.

关键词： Sol Gel Method Structural Properties Optical Properties Electrical Properties

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Promoting Economic Recovery Through Taxation in Indonesia

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Belt and Road Initiative Tax Journal 2022年第2期3卷 19-25页

作者： Yusuf Alaidrus Hidayatullah Frans Hans Z D manik Tax Official Directorate of International Taxation Directorate General of Taxes of Indonesia

After two consecutive quarters of decreasing GDP,Indonesia expe-rienced a recession for the first time in 22 *** Indonesian government has responded since the COVID-19 pandemic and started with new measures to reduce the pandemic’s potential for further *** 2021,efforts to revive and speed up economic growth ***’s economic recovery has been boosted by the country’s tax policy,particularly concerning the tax incentives to mitigate the harm from the COVID-19 outbreak.

关键词： Tax policy Tax incentive Economic recovery COVID-19

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林烟草CBL基因家族成员NsylCBL2的功能分析

林烟草CBL基因家族成员NsylCBL2的功能分析

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作者： S M Nuruzzaman manik 中国农业科学院

学位级别：硕士

类钙调神经素B亚基蛋白(CBL)是植物中普遍存在的一种钙感受器家族。很多研究表明CBL在植物响应生物胁迫和非生物胁迫中起着至关重要的作用。因此,它被认为是基因抗逆育种工作中很重要的候选基因。本研究旨在从林烟草中分离CBL基因并对... 详细信息

类钙调神经素B亚基蛋白(CBL)是植物中普遍存在的一种钙感受器家族。很多研究表明CBL在植物响应生物胁迫和非生物胁迫中起着至关重要的作用。因此,它被认为是基因抗逆育种工作中很重要的候选基因。本研究旨在从林烟草中分离CBL基因并对其进行功能验证。主要工作内容如下:1.利用同源克隆的策略,从林烟草的叶片中获得一个基因。进化树分析表明该基因与其它物种中的CBL2基因在同一个分支上。因此将其命名为林烟草CBL2基因。多序列比对分析表明林烟草CBL2蛋白与拟南芥CBL2蛋白的序列相似度高达89.38%,与杨树、水稻和玉米CBL2蛋白的序列相似度分别为86.22%、84.00%、48.21%。***2的CDS序列全长为675 bp,编码一个由223个氨基酸组成的蛋白质,其基因组包括7个内含子和8个外显子。NsylCBL2的4个EF手型结构之间的距离分别为23、25和32个氨基酸。生物信息学分析表明NsylCBL2的结构和理化性质与其它物种中CBL2相似。3.通过浸花法将NsylCBL2转入拟南芥中,对T1代植株进行RCR阳性鉴定和RT-PCR表达量检测,对T2和T3代植株进行抗性筛选,T3代纯合株系用来进行NsylCBL2的功能验证,拟南芥cbl2突变体从TAIR上订购并进行了T-DNA插入验证。4.已有研究表明CBL2基因参与盐和镁的信号转导,因此本试验也进行了高盐和高镁处理,来检测NsylCBL2是否也具有这样的功能。但是萌发、表型观察和生理数据表明过表达NsylCBL2拟南芥植株、突变体与野生型在这些处理下没有明显差异。因此,NsylCBL2可能不参与盐与镁的信号转导。5.另一方面,pCHF3-NsylCBL2这个质粒通过叶盘转化法侵染到烟草里面。过表达转基因烟草就已经获得,并且表达量水平高于普通烟草。从转基因烟草收到种子后做特定的抗性筛选检测测试,获得符合3:1比例的T1代,然后种到温室获得T2代,供以后的实验做准备。6.获得NsylCBL2的启动子序列并对其进行了预测分析,发现其含有多种逆境和激素相关转录因子。构建了NsylCBL2启动子与GUS基因融合的表达载体pBI101-CBL2pro。本研究是对NsylCBL2基因的首次报道。因此,本研究期望能给NsylCBL2今后的研究提供一定的指导。

关键词： NsylCBL2 克隆生物信息学功能启动子分析

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Tunneling current in Si-doped n type-GaAs heterostructures infrared emitter

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Frontiers of Optoelectronics 2014年第4期7卷 501-508页

作者： Pradip DALAPATI Nabin Baran manik Asok Nath BASU Condensed Matter Physics Research Center Department of Physics Jadavpur University

In the present work, we measured the forward bias current-voltage（I-V） characteristics of Si-doped n type gallium arsenide（GaAs） heterostructures infrared emitter over a wide temperature range from 350 to 77 K. Results showed that the slopes of the exponential curve changed slowly with temperature. The analysis of the various tunneling mechanisms indicated that the tunneling current varied approximately as a function of ～ exp（ – αEg+ βeV）where the parameters α and β varied indistinctively with temperature and voltage. The dependence of forward tunneling current on the temperature and bias can be explained by thermally induced band gap shrinkage and bias induced route change respectively. These results will be helpful for application of the optoelectronics device in both high and low temperature ambiences.

关键词： infrared emitter tunneling characteristic energy band gap thermal stress

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Power System Stability Improvement by Using STATCOM with POC ＆ Excitation Controller

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Computer Technology and Application 2013年第12期4卷 643-648页

作者： Zannat-E-Noor manik Mia Atiqur Rahman Sohel Hossain Department of Electrical & Electronic Engineering Rajshahi University of Engineering & Technology (RUET) Rajshahi-6204Bangladesh Department of Electrical & Electronic Engineering Khulna University of Engineering & Technology (KUET) Khulna-9100

This paper presents the model of a static synchronous condenser （STATCOM） which is controlled externally by a newly designed power oscillation controller （POC） for the improvements of power system stability and damping effect of an on line power system. The proposed POC consists of two controllers （power oscillation damping ＆ proportional integral derivative PID ＆ POD）. PID parameters have been optimized by Zigler Necles close loop tuning method. Machine excitation has been controller by using excitation controller as required. Both single phase and three phase faults has been considered in the research. In this paper, a power system network is considered which is simulated in the phasor simulation method ＆ the network is simulated in three steps： without STATCOM, with STATCOM but no externally controlled, STATCOM with POC. Simulation result shows that without STATCOM, the system parameters become unstable during faults. When STATCOM is imposed in the network, then system parameters become stable. Again, when STATCOM is controlled externally by POC controllers, then system voltage ＆ power becomes stable in faster way then without controller It has been observed that the STATCOM ratings are only 20 MVA with controllers and 200 MVA without controllers. Therefore, STATCOM with POC controllers are more effective to enhance the voltage stability and increases power transmission capacity of a power system. So STATCOM with POC ＆ excitation controllers, the system performance is greatly enhanced.

关键词： STATCOM voltage regulator power system controller PID POD POC and MATLAB simulink.

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