PRESENT STATUS, FUTURE PROSPECTIVE OF EFFECTIVENESS OF NUCLEAR MEDICINE IN BANGLADESH

Mannan, Abdul 대한핵의학회 1984 핵의학 분자영상 Vol.18 No.1

PRESENT STATUS , FUTURE PROSPECTIVE OF EFFECTIVENESS OF NUCLEAR MEDICINE IN BANGLADESH

Mannan, Abdul 대한핵의학회 1985 핵의학 분자영상 Vol.19 No.1

Energy Model Based Direct Torque Control of Induction Motor Using IP Controllers

Mannan, Mohammad Abdul,Murata, Toshiaki,Tamura, Junji Journal of International Conference on Electrical 2012 Journal of international Conference on Electrical Vol.1 No.4

This paper deals with direct torque control of an induction motor (IM) with constant switching frequency. The desired torque is obtained from the speed controller which is designed using the IP controller. Decoupling control of torque and flux is developed based on the energy model of IM using the IP controller strategies. The desired d-axis and q-axis stator voltage components are obtained from the designed controller, which decouples torque and flux. The constant switching frequency can be applied using space-vector pulse width modulation, since the desired stator voltage can be known from the decoupling torque and flux controllers. In order to achieve stable operation of the proposed IP controllers, the gains of the controllers are chosen by setting the poles in negative (left) half of s-plane and by choosing the rising time for the response of the step function. The proposed controller was verified in simulations using Matlab/Simulink and results have proven excellent performance. It was found that the proposed IP controllers can provide excellent performance to track the desired torque and speed and to reject the disturbance of load.

Effects of Vegetative and Flowering Stages on the Biosynthesis of Artemisinin in Artemisia Species

Abdul Mannan,Ibrar Ahmed,Waheed Arshad,Izhar Hussain,Bushra Mirza 대한약학회 2011 Archives of Pharmacal Research Vol.34 No.10

Artemisinin is an endoperoxide sesquiterpene lactone, and has been proven to be very effective in treating drug resistant cases of malaria, cancer, etc. The compound is obtained from Artemisia species. In the current study, the effects of vegetative and flowering stages on artemisinin production were studied, to determine the proper harvesting time of naturally growing Artemisia species with the highest levels of artemisinin. Eight Artemisia species along with two varieties were selected for this analytical work. The results showed that artemisinin content was high in the leaves of Artemisia indica, A. sieversiana, A. roxburghiana var. roxburghiana, A. roxburghiana var. gratae, and A. parviflora at the flowering stage. The highest artemisinin content was measured in the leaves of A. dracunculus var. dracunculus. Upon comparisons of artemisinin content among the individual plant species, the highest amount of artemisinin was again in A. dracunculus var. dracunculus followed by A. sieversiana when harvested at the flowering stage. In overall comparisons, the plants at the flowering stage showed high levels of artemisinin, which is deemed the optimum harvesting time of Artemisia species in Pakistan for maximum artemisinin content.

Performance Analysis of Metro WDM Star Network based on An Arrayed Waveguide Grating

Syed Abdul Mannan Kirmani,Seoyong Shin,양효식,Naeem Zafar Azeemi 한국광학회 2008 Current Optics and Photonics Vol.12 No.4

In this paper, we analyze the performance of a reliable, scalable, and cost-effective switchless wavelength division multiplexing (WDM) network based on an arrayed waveguide grating (AWG). The network efficiency is significantly increased by spatially reusing wavelengths and exploiting multiple free spectral ranges (FSRs) of the AWG employed in the architecture. We have analyzed the performance of this architecture by simulating in OptsimTM with a control channel which exploits the broadband light source, i.e., an LED. The data was successfully transmitted to a distance of 30 km without using any EDFA’s in the network, with a reasonable BER of 4.0530×10-14. We have analyzed the performance of this architecture with a control channel which exploits the broadband light source, i.e., an LED, by simulating in OptsimTM.

Islamo-nationalism, domestic politics, and Bangladesh’s policy of balancing against India since the 1990s

Md. Abdul Mannan 한국외국어대학교 국제지역연구센터 2018 International Area Studies Review Vol.21 No.4

This article examines the connection between politics of Islamo-nationalism in Bangladesh and Bangladesh’s policy of balancing against India. In response to India’s regional supremacy in South Asia, especially India’s dominance over Bangladesh, policy makers in Bangladesh have constantly faced two options: either ‘bandwagoning’ with India, or ‘balancing’ against the regional hegemon. Interestingly, since the 1990s until 2013, Bangladesh’s response has always swung from one side to another – from bandwagoning to balancing – in connection with the rotation of Bangladesh regime between two major political parties: the Bangladesh Nationalist Party (BNP) and the Bangladesh Awami League (AL). Bangladesh – with the BNP’s hold on power – preferred a policy of balancing against India’s dominance. During the regime of the AL, such policy dramatically shifted towards bandwagoning with India. The BNP’s preference for a balancing policy constitutes a puzzle. Weak states – which are not capable of changing unequal outcomes in the face of a preponderant power – generally pursue a policy of bandwagoning. Thus, the puzzle is as to why Bangladesh – despite being a weak actor vis-a-vis India’s overwhelming regional supremacy – pursued a policy of balancing against India during the BNP’s hold on power. This article asserts that the BNP’s politics of Islamo-nationalism is a key variable that can answer the above puzzle. The ‘self–other’ notion of Islamo-nationalism defines the national ‘selfness’ of Bangladesh in terms of the Islamic identity for its overwhelming Muslim masses, and constructs India, henceforth in this article, ‘Hindu India’, as the ‘enemy–other’ to ‘Muslim Bangladesh’.

A Systematic Approach Of Construction Management Based On Last Planner System And Its Implementation In The Construction Industry

Hussain, SM Abdul Mannan,Sekhar, Dr.T.Seshadri,Fatima, Asra Korea Institute of Construction Engineering and Ma 2015 Journal of construction engineering and project ma Vol.5 No.2

The Last PlannerSystem (LPS) has been implemented on construction projects to increase work flow reliability, a precondition for project performance againstproductivity and progress targets. The LPS encompasses four tiers of planning processes:master scheduling, phase scheduling, lookahead planning, and commitment / weeklywork planning. This research highlights deficiencies in the current implementation of LPS including poor lookahead planning which results in poor linkage between weeklywork plans and the master schedule. This poor linkage undetermines the ability of theweekly work planning process to select for execution tasks that are critical to projectsuccess. As a result, percent plan complete (PPC) becomes a weak indicator of project progress. The purpose of this research is to improve lookahead planning (the bridgebetween weekly work planning and master scheduling), improve PPC, and improve theselection of tasks that are critical to project success by increasing the link betweenShould, Can, Will, and Did (components of the LPS), thereby rendering PPC a betterindicator of project progress. The research employs the case study research method to describe deficiencies inthe current implementation of the LPS and suggest guidelines for a better application ofLPS in general and lookahead planning in particular. It then introduces an analyticalsimulation model to analyze the lookahead planning process. This is done by examining the impact on PPC of increasing two lookahead planning performance metrics: tasksanticipated (TA) and tasks made ready (TMR). Finally, the research investigates theimportance of the lookahead planning functions: identification and removal ofconstraints, task breakdown, and operations design.The research findings confirm the positive impact of improving lookaheadplanning (i.e., TA and TMR) on PPC. It also recognizes the need to perform lookaheadplanning differently for three types of work involving different levels of uncertainty:stable work, medium uncertainty work, and highly emergent work.The research confirms the LPS rules for practice and specifically the need to planin greater detail as time gets closer to performing the work. It highlights the role of LPSas a production system that incorporates deliberate planning (predetermined andoptimized) and situated planning (flexible and adaptive). Finally, the research presents recommendations for production planningimprovements in three areas: process related, (suggesting guidelines for practice),technical, (highlighting issues with current software programs and advocating theinclusion of collaborative planning capability), and organizational improvements(suggesting transitional steps when applying the LPS).

A Metro WDM Star Network with a Hybrid MAC Protocol Based on an Arrayed Waveguide Grating

Kirmani, Syed Abdul Mannan,Shin, Seo-Yong,Yang, Hyo-Sik Optical Society of Korea 2007 Current Optics and Photonics Vol.11 No.2

In this paper, we introduce a reliable, scalable, and cost-effective switchless wavelength division multiplexing (WDM) network based on a quality-of-service supporting reservation-based medium access control (MAC) protocol. The protocol not only provides both packet and circuit switching but also supports multicasting. The network efficiency is significantly increased by spatially reusing wavelengths and exploiting multiple free spectral ranges (FSRs) of arrayed waveguide grating (AWG) employed in the architecture. We have demonstrated the feasibility of this architecture by simulating in $Optsim^{TM}$.

Standardization and Development of Pharmacopoeial Standard Operating Procedures (SOPs) of Classical Unani Formulation

Mannan, Mohd Nazir,Kazmi, Munawwar Husain,Zakir, Mohammad,Naikodi, Mohammed Abdul Rasheed,Zahid, Uzma,Siddiqui, Javed Inam Cellmed Orthocellular Medicine and Pharmaceutical 2020 셀메드 (CellMed) Vol.10 No.2

Standardization of drug deals with confirmation of drug identity and determination of drug quality and purity. Unani herbal formulations are used in traditional medicine for the treatment of various diseases. Cancer is a disease which causes abnormal, uncontrolled growth of body tissue or cells, which tend to proliferate in an uncontrolled way. Spread of cancer from site of origin to other organs of the body is called metastasis. It is a hyper proliferative disorder involving, transformation, dysregulation of apoptosis, invasion and angiogenesis. The present study aimed to standardize a classical Unani formulation (CUF) described as anticancer properties. The CUF has been used for anti-cancerous activity (Dāfi'-i-saraṭān) in human population by Unani physicians for centuries. The standardization parameters carried out for classical Unani formulation are pharmacognostical studies, physicochemical parameters, high-performance thin layer chromatography (HPTLC), microbial load, aflatoxins, and heavy metals revealing specific identities and to evaluate Pharmacopoeial standards. Experiment and the data obtained established the Pharmacopoeial standards for this formulation for identification and quality control purpose. The CUF has been successfully standardized and standard operating procedures (SOPs) for its preparation has been laid down which may serve as a standard reference in future. The standardization data of this formulation may be used as a standard guideline for preparation of the formulation in future.

Characterization of Sclerotinia sclerotiorum, an Emerging Fungal Pathogen Causing Blight in Hyacinth Bean (Lablab purpureus)

Ananya Prova,Abdul Mannan Akanda,Shaikhul Islam,Md. Motaher Hossain 한국식물병리학회 2018 Plant Pathology Journal Vol.34 No.5

Stems and pods of hyacinth bean cultivated in a farmer’s field in Gazipur District, Bangladesh, were found rotted in nearly 5% hyacinth bean plants. A fungus having fluffy mycelium and large sclerotia was isolated from affected tissues. Combined results of morphological, molecular and pathological analyses identified the fungus as Sclerotinia sclerotiorum (Lib) de Bary. Inoculating the fungus on healthy hyacinth bean plants and pods reproduced the symptoms previously observed in the field. The three isolates obtained from naturally infected plants were cross inoculated in hyacinth bean, okra and African-American marigold and they were pathogenic to these hosts. The optimum temperature and pH for its growth were 20°C and pH 5.0, respectively. Sclerotial development was favored at pH 5.0. Sucrose and mannitol were the best carbon sources to support hyphal growth, while glucose was the most favourable for sclerotial development. The hyacinth bean genotypes, HB-82 (Rupban Sheem) and HB-102 were found highly resistant, while HB-94 (Ashina) was moderate resistant to the fungus. Finally, S. sclerotiorum was sensitive to Bavistin, Dithane M-45 and Rovral fungicides and Ca in the form of CaCl2. This observation could possibly aid in eliminating field loss in hyacinth bean caused by an emerging pathogenic fungus S. sclerotiorum.