Browsing by Author "ALIM, MD. ABDUL"

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Design & Implementation Of Electrical Vehicle Wireless Charger
(Department of Electrical and Electronic Engineering, 2022) RHAMAN, MD. ASHIKUR; ALI, MD. TANVIR; ALIM, MD. ABDUL
Wireless charging is becoming increasingly popular owing to the rising usage of EVs and consumer devices. This article discusses the design and execution of a contactless battery charger for electric cars. Systems based on double-D (DD) coils, which try to minimize core loss by designing and optimizing the core, are the subject of this study. You'll notice core loss if you utilize a wireless charging pad with medium to high power. Conventional approaches imply that the magnetic field in the core is equally distributed. With its non-uniformity, the core's magnetic field creates a large surge in core loss. This study focuses on the design and implementation of a multi-purpose wireless charger. Based on a Colpitts oscillator, the transmitter's core construction is fairly simple. The receiver coil's coupling efficiency has been boosted owing to advancements in the coil's construction. A workable system has been constructed and is ready to be pushed out into the world.
EFFECT OF FOLIAR APPLICATION OF UREA ON GROWTH AND YIELD OF BORO RICE
(HAJEE MOHAMMOD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR, 2018-06) ALIM, MD. ABDUL; Professor Dr. Md. Sohidul Islam
The experiment was conducted at the research field, Department of Agronomy, Hajee Mohammad Danesh Science and Technology University, Dinajpur during January to May, 2017 to find out the effect of foliar application of urea on the yield traits and yield of boro rice cv. BRRI dhan28. The experiment was laid out in Randomized Complete Block Design with three replications. The one factorial experiment was consisted of 10 treatments viz. T1= N0 (Control i.e. no urea used), T2= N50+10% (50% urea as 2 times top dressing and 10% urea as 2 times foliar spray were applied), T3= N50+15% (50% urea as 2 times top dressing and 15% urea as 3 times foliar spray were applied), T4= N50+20% (60% urea as 2 times top dressing and 20% urea as 3 times foliar spray were applied), T5= N60+10% (60% urea as 2 times top dressing and 10% urea as 2 times foliar spray were applied), T6= N60+15% (60% urea as 2 times top dressing and 15% urea as 3 times foliar spray were applied), T7= N60+20% (70% urea as 2 times top dressing and 20% urea as 2 times foliar spray were applied), T8= N70+10% (70% urea as 2 times top dressing and 10% as 3 times foliar spray were applied), T9 all urea were applied as traditional method (33.33% during land preparation, 33.33% after 25 DAT and rest 33.33% urea at 40 DAT). T10 all urea were applied as traditional method (as T9 and 10% as 2 times foliar applications as treatment T2).The recommended dose of urea, TSP, MOP, gypsum, ZnSO4 and borax @ 250, 75, 100, 75, 10 and 5 kg ha-1 ,respectively. All fertilizers except urea were applied during land preparation. The results revealed that most of the parameters showed significant difference among the treatment. The plant height (100.6cm) was recorded in the T9 treatment, while the highest total grains panicle-1 (140), straw yield (8.317 t ha-1 ), number non-effective tillers plant-1 (7.865), number sterile grains panicle-1 (24.33) were observed in T10 treatment. However, the highest number effective tillers plant-1 (18.67), number of total tillers plant-1 (14.20), and length of panicle (21.43 cm), number of fertile grains panicle-1 (117.4), 1000 grain weight (24.56g), grain yield (6.314 t ha-1 ) and harvest index (52.51%) were opined in T8. In contrary, the lowest plant height (75.85 cm), number of effective tillers hill-1 (12.67), number of non-effective tillers hill-1 (1.33), panicle length (16.48 cm), number of fertile grains panicle-1 (85.34), number of sterile grains panicle-1 (7), 1000 grain weight (19.74g), grain yield (2.194 t ha-1 ), straw yield (4.08 t ha-1 ) were recorded under control condition (T1). The treatment T8 performed better to all the treatments including T9. Comparatively, better yield traits were obtained with the treatment T8 (70% soil +10% foliar urea application) among all the treatments and the values were statistically similar to the treatment T9 (100% urea soil application). To get the more confirmation and recommendation the experiments can be repeated in different agro ecological zone of Bangladesh.
YIELD PERFORMANCE OF SESAME IN RESPONSE TO POPULATION DENSITY AND SOURCE-SINK MANIPULATION
(DEPARTMENT OF AGRONOMY, 2009) ALIM, MD. ABDUL
An experiment was conducted at the Sher-e-Bangla Agricultural University Farm Dhaka 1207 (Tejgaon series under AEZ No.28) during Kharif-1 (March – June), 2008 to study the yield performance of sesame in response to population density and source-sink manipulation. Two factors (A) population density and (B) source-sink manipulation were initiated. Three population densities viz. (1) 30 plants m -2 (D 1 ), (2) 40 plants m (D 2 ) and (3) 50 plants m -2 (D ) and four source-sink manipulation viz. (1) no removal (M 0 3 ), (2) removal of lower empty leaves, lower empty branches and top of the inflorescence (M 1 ), (3) removal of all branches (M ) and (4) removal of lower empty leaves and lower empty branches (M 3 2 ) were comprised for the experiment. The treatment combinations were (i) D 1 M 0 , (ii) D 1 M 1 , (iii) D 1 M 2 , (iv) D , (vi) D 2 M 1 , (vii) D 2 M 2 , (viii) D 2 M 3 , (ix) D 3 M 0 , (x) D 3 M 1 , (xi) D 3 M . Significant effect was observe on the basis of population density, source-sink manipulation and their combination on plant height (cm), number of branches plant 2 , leaf area index, dry weight plant -1 , dry weight m -2 1 M 3 , (v) D and (xii) D (g), crop growth rate, number of capsules plant -1 , number of capsules m -2 , number of seeds capsule -1 , 1000 seed weight (g), yield plant -1 (g), total yield (kg ha -1 ), stover yield (kg ha -1 ) and harvest index. Results revealed that the highest number of capsules plant m -2 (1135.20), number of seeds capsule -1 -1 (28.38), number of capsules (70.66), 1000 seed weight (3.45 g), total yield (1725.45 kg ha -1 ) and harvest index (40.72) were obtained with the combined effect of D 2 M 1 (40 plants m -2 + removal of lower empty leaves, lower empty branches and top of the inflorescence). But the lowest number of seeds capsule -1 (66.30) and total yield (1060.75 kg ha -1 ) were obtained with the combined effect of D 3 M 2 (50 plants m + removal of all branches). However, to obtain a specific result and recommendation, more research work on sesame should be done in different Agro-ecological zones of Bangladesh.
YIELD, QUALITY AND SHELF LIFE OF JUTE (Corchorus olitorius) SEED AS INFLUENCED BY POTASSIUM AND BORON
(HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR., 2013-09) ALIM, MD. ABDUL; Professor Dr. Musharraf Hossain Mian
Acute shortage of quality jute seeds (Corchorus olitorius) accentuated conduction of this study in order to find out appropriate doses and proper application of potassium (K) and boron (B) in quest of increasing seed production and improving seed qualities for longer duration of storage. To achieve these objectives, a research plan was made with three experiments conducted at the Jute Seed Production and Research Center, Nashipur, Dinajpur during July 2007 to December 2008. First experiment had the target for selecting appropriate dose and methods for K application from amongst six levels of K (0, 30, 60, 90, 120 & 150 kg ha!) applied in three ways -(i) all K as basal at final land preparation, (ii) half as basal and rest half as top dressing at 30-35 days after sowing (DAS), and (iii) one- third as basal one third at 25 DAS and one- third at 45 DAS as top dressing. Of all the parameters studied, the following six -(i) shoot dry matter yield, (ii) seed yield, (iii) seed quality (viability, vigour, seedling dry matter, EC, soluble protein, soluble sugar), (iv) seed shelf life (deterioration of seed quality as in (iii), (v) benefit cost ratio (BCR), and (vi) K and B, balance in soils, were used for selection of better treatments. Out of 16 treatments, only basal applications of 30, 60, and 90 kg K ha" were selected from the first experiment. The second experiment was conducted parallel to first experiment with four levels of B (0, 1, 2, & 3 kg ha‘) for application as - (1) basal (2) half as basal and half as top dressing at 35 DAS, (3) half as basal and half at 35 DAS as foliar spray, (4) one- third as basal, one third at 25 DAS and one- third at 45 DAS as top dressing, and (v) one- third as basal, one -third at 25 DAS and one- third at 45 DAS as foliar spray. Of the 16 treatments, basal applications of 1, 2 & 3 kg B ha were selected on the basis of their overall performances. The third experiment was carried out with 16 treatment-combination of K (0, 30, 60 and 90 kg ha") and B (0, 1, 2 and 3 kg ha-!) moduled form the finding of earlier two experiments. Basal application of K and B had significant positive effect on seed yield and seed qualities. They had beneficial effect on the degree of seed leachate conductivity, seedling dry weight and essaying vigour. Application of 60 or 90 kg K ha* along with 1 or 2 kg B ha did not differ significantly in respect of increasing seed yield (62.2-69.0% increase), seed viability (97.5-99.0% germination), EC (317-354 up S cm), vigour (98.33-98.50), seedling dry weight (0.966-1.023 g plant"), % protein in seed (22.2-22.5%), % sugar in seed (13.4-13.6%) and BCR (1.24-1.36). Seeds stored in air tight plastic pot retained good germination (more than 90%) up to 9 months in place of only 6 months for no application of K and B. Use of 60 or 90 kg K ha* with 1 or 2 kg B ha? may ensure safe storage of seeds up to one year having only some deterioration like a decrease in seed germination (7.07-9.09%) vigour (5.95- 7.70%), total soluble protein (4.41-8.42%) and total soluble sugar (5.16-7.95%). The highest seed yield and BCR (997.67 kg ha! and 1.36, respectively) were recorded for the application of 60 kg K + 2 kg B per hectare with a negative balance of 32.6 kg K hat anda positive balance of 1.44 kg B ha" with the corresponding values of 966.8 kg ha-! with 1.24 BCR, and a positive balance of K (1.32 kg ha!) and B (0.514 kg ha") with the application of 90 kg K + 1 kg B per hectare. Therefore, it is inferred that basal application of 90 kg K ha-! + 1 kg B ha? can be a recommendation for producing increased amounts of quality seeds of Corchorus olitorius leaving a positive balance of both K and B in soils.