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Storage Potentialities of Some Exotic Potato Varieties at Farmers’ Condition in Bangladesh

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Agricultural Sciences 2017年第2期8卷 183-193页

作者： Abul Kalam Azad humayun kabir Touria El-Jaoual Eaton Edward Binod Soren Department of Crop Science & Technology Rajshahi University Rajshahi Bangladesh Department of Horticulture Lincoln University of Missouri Jefferson City USA

Potatoes have to be stored after harvest for a shorter or longer period in order to maintain even supply to the market throughout the year for direct human consumption as well as for the processing industry. The present study focused on the storage potentialities of six exotic varieties of potato viz., Diamant, Cardinal, Granola, Felsina, Provento and Asterix at farmers’ condition. The experiment was conducted during winter (December to March) for cultivation, and spring and summer (March to August) for storage at Domar Foundation Seed Potato Production Farm, BADC, Nilphamari, Bangladesh. Results revealed that there were significant variations in storage behavior among the varieties of potato tubers. Asterix showed minimum weight loss (7.10%) which was statistically identical with Cardinal (7.85%) while it was maximum in Felsina (18.83%) followed by Provento (13.41%) during four months storage conditions practicing by farmers (farmers’ conditions). In respect of rotting, significantly highest degree was found in Felsina (18.72%) followed by Provento (15.01%) and the lowest was in Asterix (2.02%) identically similar with Granola (2.22%). The highest percentage of water loss was found in Provento (27.01%) and the lowest was recorded in Asterix (17.03%). Dormancy period and sprouts per tuber were found highest in Asterix (70 days and 9.67) while the lowest dormancy was in Diamant (56 days) and the lowest sprouting was in Granola (2.50). Asterix was found to produce significantly highest amount of dry matter content (20.50%) along with higher amount of edible stored tubers (80.21%) compared to those of other varieties at the end of four months storage. Under the same condition, Diamant was the second highest producer of dry matter (20%) which was statistically similar with Asterix, and had good storage ability that retained 69.07% edible tubers, whereas Felsina contained the lowest amount of dry matter (16%) and showed poor storage ability retaining 55.85% edible tubers

关键词： Potato Sprouting Behavior Dormancy Weight Loss Tuber Dry Matter Content

Evaluation of Six Modern Varieties of Potatoes for Yield, Plant Growth Parameters and Resistance to Insects and Diseases

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Agricultural Sciences 2017年第11期8卷 1315-1326页

作者： Touria E. Eaton Abul Kalam Azad humayun kabir Abu Bakkar Siddiq Cooperative Extension and Research Lincoln University of Missouri Jefferson City MO USA Department of Crop Science & Technology Rajshahi University Rajshahi Bangladesh

Six modern varieties of potatoes (Diamant, Cardinal, Granola, Felsina, Provento and Asterix) were investigated for their growth parameters and yield to determine their suitability for production in Bangladesh. Results indicate significant variations among the varieties in the yield and morphological characteristics and no difference in the number of main stems per hill. Among the six studied varieties, Asterix produced the greatest yield (29.60 t/ha), the greatest number of tubers per hill (13 tubers/hill), the largest percentage (84%) of medium sized tubers (28 - 55 mm diameter), and the greatest plant height (61.33 cm). Diamant performed second after Asterix with a yield of 28.33 t/ha, and a plant height of 59.0 cm. Felsina produced the lowest yield (25.13 t/ha) and the lowest number of tubers per hill (8.67 tubers/hill). In a farmers’ perception study, where farmers scored the yield and resistance to diseases and insect damage of the six varieties, from 1 to 6 (6 being the highest and 1 being the lowest), Asterix was the most preferred variety by farmers with scores of 6, 5.67 and 5.83 for yield, disease resistance and insect resistance respectively. Provento was the least preferred by farmers with a score of overall performance of 4. The results of this study indicate that Asterix and Diamant have the potential to be grown successfully by the farmers in Bangladesh.

关键词： Potato Cultivars Vegetative Parameters Yield Potentials Farmers’ Condition

A Modified Enhanced Recovery after Surgery (ERAS): Use and Surgical Outcome in Breast Cancer Patients

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Journal of Biosciences and Medicines 2018年第3期6卷 15-25页

作者： Tajudeen A.Wahab Hanna Uwakwe Maher Jumah Rilwan Aransi humayun kabir Khan Elm Breast Care Centre BarkingHavering and Redbridge University Hospitals NHS TrustKing George HospitalLondonUK

Background: ERAS protocols are perioperative interventions aimed at reducing postoperative complications, length of hospital stay (LOS) and early return to normal activities. This has improved outcome in many surgical specialties, including breast surgery. We present the surgical outcome of breast cancer (BC) patients treated over a 12-month period following the principle of ERAS protocols and highlight the underpinning evidence. Methods: A retrospective analysis of all BC patients diagnosed and had breast cancer surgery over 12 months. Data collected included patient’s demographics, type of surgery, LOS, other perioperative care and significant postoperative complications. Excluded were patients with bilateral cancer surgeries, diagnostic excision, margin clearance or breast reconstruction. Results: There were 621 BC diagnosed including 5 male and 12 bilateral female BC. The ages ranged from 25 to 93 years. Excluding bilateral BC, 351 patients (70.2 %) had breast conserving surgery (BCS) while 149 (29.8%) patients had mastectomy as index cancer surgery. Sixteen (4.5%) of the women who initially underwent BCS subsequently had a completion mastectomy. The overall rate of successful BCS was 335/500 (67%). 441 (85.5%) of patients were discharged same or next day. 12 (7.2%) cases of postoperative haematoma, 6 cases of wound infection and a case of seroma requiring surgical/radiological drainage recorded. Conclusion: ERAS protocol in BC surgery is associated with decreased LOS and low complication rate. Delayed discharges are mostly due to adverse social factors and medical comorbidity rather than post-operative surgical complications.

关键词： ERAS^(■) Breast Cancer Surgical Outcome

Stable Sensor Network (SSN): A Dynamic Clustering Technique for Maximizing Stability in Wireless Sensor Networks

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Wireless Sensor Network 2010年第7期2卷 538-554页

作者： A. B. M. Alim Al Islam Chowdhury Sayeed Hyder humayun kabir Mahmuda Naznin 不详

Stability is one of the major concerns in advancement of Wireless Sensor Networks (WSN). A number of applications of WSN require guaranteed sensing, coverage and connectivity throughout its operational period. Death of the first node might cause instability in the network. Therefore, all of the sensor nodes in the network must be alive to achieve the goal during that period. One of the major obstacles to ensure these phenomena is unbalanced energy consumption rate. Different techniques have already been proposed to improve energy consumption rate such as clustering, efficient routing, and data aggregation. However, most of them do not consider the balanced energy consumption rate which is required to improve network stability. In this paper, we present a novel technique, Stable Sensor Network (SSN) to achieve balanced energy consumption rate using dynamic clustering to guarantee stability in WSN. Our technique is based on LEACH (Low-Energy Adaptive Clustering Hierarchy), which is one of the most widely deployed simple and effective clustering solutions for WSN. We present three heuristics to increase the time before the death of first sensor node in the network. We devise the algorithm of SSN based on those heuristics and also formulate its complete mathematical model. We verify the efficiency of SSN and correctness of the mathematical model by simulation results. Our simulation results show that SSN significantly improves network stability period compared to LEACH and its best variant.

关键词： Network Stability Period Clustering Energy Consumption Rate

Fabrication and Optical Characterization of Palm Fiber Reinforced Acrylonitrile Butadiene Styrene Based Composites: Band Gap Studies

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Materials Sciences and Applications 2018年第2期9卷 246-257页

作者： Budrun Neher Md. Mahbubur Rahman Bhuiyan humayun kabir Md. Abdul Gafur Farid Ahmed Department of Physics Jahangirnagar University Dhaka Bangladesh Department of Physics Saga University Saga Japan PP and PDC Bangladesh Council of Scientific and Industrial Research Dhaka Bangladesh

The composite materials are replacing the conventional materials, owing to their excellent properties. The developments of new materials are on the anvil and are thriving day by day. Natural fiber composites such as palm fiber (PF) polymer composites became more enchanting because of their high specific strength, low weight and biodegradability. Mixing of natural fiber like PF with acrylonitrile butadiene styrene (ABS) polymer is finding increased applications. In this work, PF reinforced ABS composites PF-ABS was fabricated by Injection Moulding Machine. The effect of UV-Visible radiation on PF-ABS composites was studied by means of ultraviolet-visible spectroscopy in the wavelength 200 - 1000 nm at room temperature. The present investigation shows that the addition of palm fiber modifies the absorption property of the materials. The absorption ability is maximal for 10% PF-ABS composites while minimal for 20% PF-ABS composites in the visible region of the spectrum. Optical constant like direct band gap energy, Urbach energy and Steepness parameter were determined using absorbance data. The values of direct energy band gap, Urbach energy as well as Steepness parameter were found to be in the range 2.6 - 3.9 eV, 0.40 - 0.85 eV and 0.03 - 0.06, respectively. It was observed that the value of direct band gap energy as well as Urbach energy is higher while the value of Steepness parameter is lower for PF-ABS composites with 10% palm fiber.

关键词： Palm Fiber UV-Visible Spectroscopy Band Gap Bio-Degradable

Finding the Optimal Percentage of Cluster Heads from a New and Complete Mathematical Model on LEACH

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Wireless Sensor Network 2010年第2期2卷 129-140页

作者： A. B. M. ALIM AL ISLAM CHOWDHURY SAYEED HYDER humayun kabir MAHMUDA NAZNIN 不详

Network lifetime is one of the important metrics that indicate the performance of a sensor network. Different techniques are used to elongate network lifetime. Among them, clustering is one of the popular techniques. LEACH (Low-Energy Adaptive Clustering Hierarchy) is one of the most widely cited clustering solutions due to its simplicity and effectiveness. LEACH has several parameters that can be tuned to get better performance. Percentage of cluster heads is one such important parameter which affects the network lifetime significantly. At present it is hard to find the optimum value for the percentage of cluster head parameter due to the absence of a complete mathematical model on LEACH. A complete mathematical model on LEACH can be used to tune other LEACH parameters in order to get better performance. In this paper, we formulate a new and complete mathematical model on LEACH. From this new mathematical model, we compute the value for the optimal percentage of cluster heads in order to increase the network lifetime. Simulation results verify both the correctness of our mathematical model and the effectiveness of computing the optimal percentage of cluster heads to increase the network lifetime.

关键词： Wireless Senor Network Clustering Mathematical Model Network Lifetime Energy Consumption Rate Renewal Reward Process

LC-MS法测定拟南芥原生质体脱落酸的研究

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华南师范大学学报（自然科学版） 2012年第4期44卷 109-112页

作者：郭磊 Mohammed humayun kabir 童建华黄志刚萧浪涛湖南农业大学植物激素与生长发育湖南省重点实验室长沙410128

利用高效液相色谱与质谱联用法(LC-MS法)对从土培拟南芥叶片和水培拟南芥根系中分离的原生质体进行脱落酸含量分析.结果表明,所测原生质体的脱落酸含量与原生质体数目之间具有较好的线性关系,相关系数分别为0.992 3和0.993 1.脱落酸含... 详细信息

利用高效液相色谱与质谱联用法(LC-MS法)对从土培拟南芥叶片和水培拟南芥根系中分离的原生质体进行脱落酸含量分析.结果表明,所测原生质体的脱落酸含量与原生质体数目之间具有较好的线性关系,相关系数分别为0.992 3和0.993 1.脱落酸含量的检测下限为1.07 ng/mL,土培拟南芥叶片和水培拟南芥根系原生质体检测下限分别为3万个和2万个.该研究以原生质体为材料,避免了细胞间隙中的复杂化学成干扰,提高了植物激素测定的灵敏度和精度,完善了经典的植物激素测定技术.

关键词：脱落酸高效液相色谱与质谱联用拟南芥原生质体

Convergence Platform of Cloud Computing and Internet of Things (IoT) for Smart Healthcare Application

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Journal of Computer and Communications 2020年第8期8卷 1-11页

作者： M. Mamun-Ibn-Abdullah M. Shahinuzzaman S. M. Abdur Rahim M. humayun kabir Department of Electrical and Electronic Engineering Islamic University Kushtia Bangladesh

Internet of Things (IoT) is a widely distributed network which requires small amount of power supply having limited storage and processing capacity. On the other hand, Cloud computing has virtually unlimited storage and processing capabilities and is a much more mature technology. Therefore, combination of Cloud computing and IoT can provide the best performance for users. Cloud computing nowadays provides lifesaving healthcare application by collecting data from bedside devices, viewing patient information and diagnose in real time. There may some concerns about security and other issues of the patient’s data but utilization of IoT and Cloud technologies in healthcare industry would open a new era in the field of healthcare. To ensure basic healthcare needs of the people in the rural areas, we have proposed Cloud-IoT based smart healthcare system. In this system various types of sensors (Temperature, Heart bit, ECG, etc.) are equipped in the patient side to sense the patient’s physiological data. For securing data RSA based authentication algorithm and mitigation of several security threats have been used. The sensed data will process and store in the Cloud server. Stored data can be used by the authorized and/or concerned medical practitioner upon approved by the user for patient caring.

关键词： Cloud Computing Embedded Hardware and Software IoT Smart Healthcare System

Study of Mechanical and Physical Properties of Palm Fiber Reinforced Acrylonitrile Butadiene Styrene Composite

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Materials Sciences and Applications 2014年第1期5卷 39-45页

作者： Budrun Neher Md. Mahbubur Rahman Bhuiyan humayun kabir Md. Rakibul Qadir Md. Abdul Gafur Farid Ahmed Department of Physics Comilla University Comilla Bangladesh Department of Physics Jahangirnagar University Dhaka Bangladesh Department of Physics Jahangirnagar University Dhaka Bangladesh Department of Physics Comilla University Comilla Bangladesh PP and PDC Bangladesh Council of Scientific and Industrial Research Dhaka Bangladesh

Palm fiber (PF) reinforced acrylonitrile butadiene styrene (ABS) composite matrix was prepared by employing Injection Moulding Machine (IMM). Palm fiber was collected from ten different trees of different age group from Comilla region in Bangladesh. Three sets of samples were prepared for three different wt% (5%, 10% and 20%) of fiber contents. The mechanical (tensile strength, flexural stress, micro hardness, Leeb’s rebound hardness) and physical (bulk density and water absorption) properties were measured. The observed result reveals that the tensile strength (TS) and flexural stress (FS) were decreased with increasing fiber contents in the PF-ABS composites except 10% fiber content.

关键词： Acrylonitrile Butadiene Styrene Composite Tensile Stress Flexural Stress Vicker’s Hardness and Leeb’s Rebound Hardness