Dhaka University Journal of Biological Sciences最新文献_第4页

New record of slipper lobster Thenus indicus Leach, 1816 (Crustacea: Decapoda: Scyllaridae) from Bangladesh waters 孟加拉水域滑龙虾Thenus indicus Leach新记录，1816(甲壳纲:十足目:鳞蟹科)

Dhaka University Journal of Biological Sciences Pub Date : 2023-02-19 DOI: 10.3329/dujbs.v32i1.64186

Md Sagir Ahmed, S. K. Datta, Tonmoy Saha, Durjoy Raha Antu, Anindita Barua, Sumaiya Ahmed

引用次数: 0

A Brief Account on Protozoan Infection in Asian Stinging Catfish, Heteropneustes Fossilis (Bloch, 1794) In Different Seasons of Bangladesh 孟加拉不同季节亚洲刺鲶，Heteropneustes化石(Bloch, 1794)原生动物感染简述

Dhaka University Journal of Biological Sciences Pub Date : 2023-02-19 DOI: 10.3329/dujbs.v32i1.64187

Zannatun Nahar Jhinu, Rita Parveen, Md Aminul Islam Bhuiyan, A. J. Howlader

{"title":"A Brief Account on Protozoan Infection in Asian Stinging Catfish, Heteropneustes Fossilis (Bloch, 1794) In Different Seasons of Bangladesh","authors":"Zannatun Nahar Jhinu, Rita Parveen, Md Aminul Islam Bhuiyan, A. J. Howlader","doi":"10.3329/dujbs.v32i1.64187","DOIUrl":"https://doi.org/10.3329/dujbs.v32i1.64187","url":null,"abstract":"The study was conducted to identify the protozoan parasites in a freshwater indigenous air breathing fish, Heteropneustes fossilis (Bloch, 1794). The host fish was collected during mid of the April 2018 to end of the March 2019 from freshwater bodies of Mymensingh, Kishoregonj, Faridpur, Jashore, Manikganj and Bogura districts of Bangladesh. Three species of phylum myxozoa namely Henneguya singhi, Henneguya qadrii, Henneguya mystusia, one species of phylum ciliophora namely Trichodina siddiquae and two species of phylum mastigophora namely Trypanosoma singhii and Piscinoodium pillulare were identified in H. fossilis. The parasites of all infected hostswere observed in gill, body slime and blood, however gillswere commonly infected by parasites rather than body slime and blood. Three species of parasite Piscinoodium pillulare, Henneguya qadrii and Henneguya mystusia were first recorded in this host fish and novel locality record in Bangladesh. H. fossilis was found to be infected over the three major (p<0.05) (summer, rainy and winter) seasons and demonstrated a strong significant association (P0<05) with season during the study period. In H. fossilis, highest variety and highest number of parasites were found in winter season, prevalence and intensity was found 78.31% and 5.17 respectively. Lowest prevalence and intensity were found in rainy season respectively 45.87 and 4.72. Among all the parasites Henneguya singhi was common in all the three seasons and its rate of infection was found elevated in summer (20.69%) and rainy season (19.27%). In H. fossilis prevalence of female fish were highest in all the three seasons, summer (55.22%), rainy (50.75%) and winter (85.57%) than their male counterparts 38.76%, 38.09% and 68.12%, respectively.\u0000Dhaka Univ. J. Biol. Sci. 32(1): 21-32, 2023 (January)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85670645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of COVID-19 on Mental Health of Dhaka University Students 新冠肺炎疫情对达卡大学生心理健康的影响

Dhaka University Journal of Biological Sciences Pub Date : 2023-02-19 DOI: 10.3329/dujbs.v32i1.64189

M. R. Rabby, Roufun Naher

{"title":"Impact of COVID-19 on Mental Health of Dhaka University Students","authors":"M. R. Rabby, Roufun Naher","doi":"10.3329/dujbs.v32i1.64189","DOIUrl":"https://doi.org/10.3329/dujbs.v32i1.64189","url":null,"abstract":"Student mental health in the university setting has been an expanding concern. The COVID-19 pandemic could be detrimental to the psychological wellness of university students. The aim of this investigation was to see the mental health outcomes of Dhaka University students during the COVID-19 outbreak. A crosssectional survey using a convenient sampling technique was conducted among 193 students of the University of Dhaka within a time duration of 1 month. Data was gathered by utilizing the web survey including DASS-21BV, demographic questions, and health-related queries with respect to COVID-19. The prevalence of anxiety symptoms and depressive symptoms was 64.2 % and 66.9%, respectively, and 51.8% of students reported mild to extremely severe levels of stress. Age group was significantly associated with DASS-21 depression subscale scores (χ2 (2)> =14.179, p= .007). Hall status was also significantly associated with DASS-21 anxiety subscale scores (χ2 (2)> =10.001, p= .040). Sleep-related queries with respect to COVID-19 were significantly associated with DASS-21 anxiety subscale scores (χ2 (2)> =24.135, p= .002). COVID-19-related queries on attention, enthusiasm, mental state, and self-confidencewere also significantly associated with depressive symptoms, anxiety symptoms, and stress levels (p<.001). The COVID-19 outbreak seems to have had a considerable psychological impact on Dhaka University students and would be benefited greatly through adequate support from the relevant authorities to cope with the situation mentally.\u0000Dhaka Univ. J. Biol. Sci. 32(1): 45-55, 2023 (January)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79910390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integrated effects of vermicompost, climatic factors and soil mixing on selected soil fertility indicators 蚯蚓堆肥、气候因素和土壤混合对土壤肥力指标的综合影响

Dhaka University Journal of Biological Sciences Pub Date : 2023-02-19 DOI: 10.3329/dujbs.v32i1.64196

M. Saha, M. H. Khan, Sumana Akter, Md. Bayazid Hossain

{"title":"Integrated effects of vermicompost, climatic factors and soil mixing on selected soil fertility indicators","authors":"M. Saha, M. H. Khan, Sumana Akter, Md. Bayazid Hossain","doi":"10.3329/dujbs.v32i1.64196","DOIUrl":"https://doi.org/10.3329/dujbs.v32i1.64196","url":null,"abstract":"A field experiment was carried out to investigate the effects of vermicompost (0, 10, and 15 tha-1), climatic elements i.e. soil moisture (50%, 70%, and 100%) and elevation of soil temperature (1 to 20C) on the physico-chemical properties and nutrient availability of post-harvest calcareous-acid mixed soils after rice production. A total of 18 treatments assembling the afore-mentioned doses was applied. The analyses of the soils demonstrated significant variation in effects (p ≤0.05) of the treatments on both the available nutrient status and the physicochemical properties of soils. Except for available sulfur; soil pH, EC, organic carbon (OC), available nitrogen, phosphorous, potassium, calcium, and sodium were detected in the higher amounts in 1:1 (calcareous : acid-soils) mixed soils than those of 1:3 mixed counterpart both in initial and post-harvest soil conditions. The highest levels of soil pH, OC, available P and Zn were determined in the treatment T13. Whereas, treatment T6 proved to be the best dose for the highest availability of Ca and Mg. The treatments T1, T2, T11, and T16 were recorded to have the lower OC, available N, P, Ca, Mg, Zn and S contents in soils. In particular, the availability of Na was found to be in lesser amounts in all the subplots. In a nutshell, most of the treatments exerted favourable influence in maintaining a healthy level of soil physico-chemical parameters owing to their inherent characteristics.\u0000Dhaka Univ. J. Biol. Sci. 32(1): 119-134, 2023 (January)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"217 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74893743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Accumulation of nitrogen, phosphorus, potassium and sulfur in capsicum (Capsicum annuum L.) as influenced by vermicompost and NPK fertilizers 蚯蚓堆肥和氮磷钾对辣椒体内氮、磷、钾、硫积累的影响

Dhaka University Journal of Biological Sciences Pub Date : 2023-02-19 DOI: 10.3329/dujbs.v32i1.64192

MA Hassan Talukder, Shawn Mazumdar, M. Rahman

{"title":"Accumulation of nitrogen, phosphorus, potassium and sulfur in capsicum (Capsicum annuum L.) as influenced by vermicompost and NPK fertilizers","authors":"MA Hassan Talukder, Shawn Mazumdar, M. Rahman","doi":"10.3329/dujbs.v32i1.64192","DOIUrl":"https://doi.org/10.3329/dujbs.v32i1.64192","url":null,"abstract":"Soil fertility is one of the most promising factors that directly impact sustainable crop production. Therefore, a pot experiment was conducted in net house on capsicum (Capsicum annuum L.) in the agricultural soil to study the effects of vermicompost (VC) and inorganic fertilizers (NPK) on growth, yield and nutrient content in capsicum plants. The growth parameters and nutritional values were observed during the experiment under eleven treatments. The treatments variables are T1 (control, -VC & -NPK), T2 (VC 5 ton/ha), T3 (VC 10 ton/ha), T4 (VC 15 ton/ha), T5 (N60P35K60 kg/ha), T6 (VC 5 ton/ha +N48P28K48 kg/ha), T7 (VC 10 ton/ha + N48P28K48 kg/ha), T8 (VC 15 ton/ha + N48P28K48 kg/ha), T9 (VC 5 ton/ha + N36P21K36 kg/ ha), T10 (VC 10 ton/ha + N36P21K36 kg/ha), T11 (VC 15 ton/ha + N36P21K36 kg/ha) which were arranged in a completely randomized design (CRD) with three replications. There were statistically significant differences in each treatment for growth and yield parameters. The highest plant height (45 cm), the highest number of leaves (44 no/plant), and the highest leaf area index (90 cm2) were found in the treatments T6, T5 and T9 respectively. The lowest values for all of the above parameters were found in the treatment T1 (control). Then the highest yield parameters fruit no/ plant (3), total fresh weight (39.60 g/plant), and total dry weight (2.38 g/plant) were observed under the treatment T11. The results of the growth and yield parameters varied significantly (p<0.05). The concentrations of total N, P, K and S in different parts were measured and varied significantly (p<0.05) in leaf, stem, root and seeds. Analysis of post-harvest soil also revealed that every physico-chemical property and nutritional value were changed significantly due to different treatments.\u0000Dhaka Univ. J. Biol. Sci. 32(1): 73-81, 2023 (January)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"463 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83004539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Growth and yield performance of sunflower (Helianthus annuus L.) as influenced by cow dung and NPK fertilizers 牛粪和氮磷钾对向日葵生长和产量的影响

Dhaka University Journal of Biological Sciences Pub Date : 2023-02-19 DOI: 10.3329/dujbs.v32i1.64193

Md. Alauddin, Mk Rahman, Ahmz Ali

{"title":"Growth and yield performance of sunflower (Helianthus annuus L.) as influenced by cow dung and NPK fertilizers","authors":"Md. Alauddin, Mk Rahman, Ahmz Ali","doi":"10.3329/dujbs.v32i1.64193","DOIUrl":"https://doi.org/10.3329/dujbs.v32i1.64193","url":null,"abstract":"A field experiment was conducted at the research farm of Charfasson Govt. College, Bhola, Bangladesh in rabi season in 2015-2016 to evaluate the effect of cow dung and chemical fertilizers on growth and yield of sunflower cv. BARI-2 (Keroni-2). Highest plant height (208.4 cm), leaf area (410.5 cm2) and leaf area index (12.75) were recorded in T16 (7.5 ton CD ha-1 +N120P90K150kg ha-1). Highest dry matter yield viz. stem (60.67g plant-1) found in treatment T16 (7.5 ton CD ha- 1+N120 P90K150kg ha-1). Maximum dry weight of leaf (25.33g plant-1) and dry weight of root (12.83g plant-1) were found in treatment T15 (7.5 ton CD ha-1 +N80P60K100kg ha-1). Highest dry weight of seed (64.7 g plant-1) and dry wt. of 100 seed (9.8 g) were found in treatment T15 (7.5 ton CD ha-1 +N80P60K100kg ha-1) but the highest number of seed (735.7plant-1) and florescence diameter (52.67 cm) were observed in treatment T13 (5 ton CD ha-1 +N120P90K150kg ha-1). Maximum total dry matter yield per plant was 92.01 g and per hectare was 5.75 ton in T16 (7.5 ton CD ha-1+N120P90K150kg ha-1). Results revealed that the combined application of cow dung and NPK fertilizers produced better growth and yield of sunflower in field condition at the coastal belt of Bangladesh.\u0000Dhaka Univ. J. Biol. Sci. 32(1): 83-90, 2023 (January)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76251891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Magnitudes of basic slag on iron dynamics in Two acid sulfate soils during 30-months of incubation under various moisture regimes 两种酸性硫酸盐土壤在不同水分条件下30个月孵育期间碱性渣对铁的影响

Dhaka University Journal of Biological Sciences Pub Date : 2023-02-19 DOI: 10.3329/dujbs.v32i1.64195

M. H. Khan

{"title":"Magnitudes of basic slag on iron dynamics in Two acid sulfate soils during 30-months of incubation under various moisture regimes","authors":"M. H. Khan","doi":"10.3329/dujbs.v32i1.64195","DOIUrl":"https://doi.org/10.3329/dujbs.v32i1.64195","url":null,"abstract":"The magnitudes of basic slag (BS) at 0, 10, 20 and 30 t ha-1 on iron dynamics in two acid sulfate soils (ASSs) under moisture at field capacity, saturated condition and wetting-drying cycle were studied during 30 months of incubation (25-30 0C). The impacts of BS in Sarisabari ASS were almost similar as those obtained in Purbapukuria ASS under various treatments, but the increments of pHs in Sarisabari ASS were not as pronounced as those observed in Purbapukuria ASS. The pH values were increased by about 1.0, 1.5 and 1.2 units in Sarisabari and 2.0, 1.7 and 1.5 in Purbapukuria ASSs, those received BS30 at field capacity, saturated condition and wetting-drying cycle, respectively and followed by BS20 > BS10 treatments. The contents of basic cations in the studiedASSswere low to medium, while acidic cations were very high in relation to the amounts found in the ASSs elsewhere. Magnesium contents were about 2 to 3 -folds than those of Ca but Fe contents were very high. The application of basic slag in the ASSs was found to reduce the acidity problems noticeably and decreased the Fe contents remarkably. Neutralization of acidity by BS30 at saturation moisture level was determined to be the best for both the ASSs followed by moisture at field capacity and wetting-drying cycle. The soil pH was found to have strong positive relationship with time, while the Fe contents showed strong negative relationship with the corresponding pHs of the ASSs. These indicate that the amelioration of ASSs by the application of BS is a sustainable reclamation and improvement measures regarding Fe toxicity of the soils.\u0000Dhaka Univ. J. Biol. Sci. 32(1): 107-118 2023 (January)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80318832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In Vitro Screening of Fungicides And Plant Extracts Against Two Pathogenic Fungi of Chrysanthemum Morifolium Ramat 菊花两种病原菌杀菌剂及植物提取物的体外筛选

Dhaka University Journal of Biological Sciences Pub Date : 2023-02-02 DOI: 10.3329/dujbs.v31i2.60886

F. T. Johora, S. Hosen, S. Shamsi

{"title":"In Vitro Screening of Fungicides And Plant Extracts Against Two Pathogenic Fungi of Chrysanthemum Morifolium Ramat","authors":"F. T. Johora, S. Hosen, S. Shamsi","doi":"10.3329/dujbs.v31i2.60886","DOIUrl":"https://doi.org/10.3329/dujbs.v31i2.60886","url":null,"abstract":"Chrysanthemum morifolium is one of the most famous cut flowers with a high ornamental value, occupying an irreplaceable position in international flower commerce. But most frequently occurred fungal diseases limit the production of this ornamental plant. A total of five fungicides viz., CM-75 WP, Dithane M 45, Ridomil Gold MZ 68 WG, Rovral 50 WP and Score 250 EC were selected to evaluate in vitro efficacy at 100, 200, 300, 400 and 500 ppm concentrations against two pathogenic fungi of Chrysanthemum morifolium namely, Curvularia lunata and Fusarium moniliforme. Rovral 50 WP showed complete growth inhibition of C. lunata and CM 75 WP showed complete growth inhibition of F. moniliforme at all concentrations used. Five plant extracts viz., Azadirachta indica, Citrus limon, Datura metel, Psidium guajava and Vitex negundo were selected to evaluate in vitro efficacy at 5, 10, 15 and 20% concentrations against the test pathogens. Out of the five plant extracts, A. indica showed complete growth inhibition of C. lunata at 15 and 20% concentrations. On the other hand, P. guajava showed complete growth inhibition of F. moniliforme at 20% concentrations.\u0000Dhaka Univ. J. Biol. Sci. 31(2): 281-288, 2022 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79020995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bacteria Associated With the Leafy Salad Vegetables Of Old Dhaka City and Their Multiple Antibiotic Resistance (Mar) Index 达卡老城叶沙拉蔬菜相关细菌及其多重抗生素耐药指数

Dhaka University Journal of Biological Sciences Pub Date : 2023-02-02 DOI: 10.3329/dujbs.v31i2.60893

Swagata Sen, M. Saha

{"title":"Bacteria Associated With the Leafy Salad Vegetables Of Old Dhaka City and Their Multiple Antibiotic Resistance (Mar) Index","authors":"Swagata Sen, M. Saha","doi":"10.3329/dujbs.v31i2.60893","DOIUrl":"https://doi.org/10.3329/dujbs.v31i2.60893","url":null,"abstract":"The present work aimed to evaluate the bacteria associated with the most popular leafy salad vegetables like Coriander, Mint, and Lettuce and their antibiotic resistance pattern. Samples were collected from Rayshaheb Bazar, Nazira Bazar, and Shyam Bazar during June-August 2019. The maximum bacterial load was found in Coriander and the minimum bacterial load was in Mint. A total of 149 colonies were isolated and 35 isolates were selected for Culture and Sensitivity test against 15 common antibiotics like Amoxicillin (Ax), Cefixime (CFM), Levofloxacin (Lev), Clarithromycin (CLR), Ceftriaxone (CRO), Neomycin (N), Kanamycin (K), Ciprofloxacin (Cip), Erythromycin (E), Doxycycline (Do), Vancomycin (VA), Cefuroxime (CXM), Chloramphenicol (C), Rifampicin (RA), and Gentamycin (CN). Sixteen antibiotic resistant bacterial isolates were selected for their identification and drug resistance pattern. Among these 15 antibiotic resistant bacterial isolates, only 2 were Gram positive and were identified as Enterococcus faecalis and the Gram negative bacteria belonged to the genus Enterobacter (9), Serratia (3), Klebsiella (2).The drug resistance pattern showed that most of the isolated bacteria were resistant against Amoxicillin and susceptible to Chloramphenicol. The (multiple antibiotic resistance (MAR) inedx of the isolated bacteria ranged between 33.33% and 86.67% which is very alarming.\u0000Dhaka Univ. J. Biol. Sci. 31(2): 361-369, 2022 (July) ","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78823469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reactions of Students Towards Class Cancellation, Class Rescheduling, Inadequate Classes and Classes for Less Than Designated Duration in Dhaka University 达卡大学学生对取消课程、重新安排课程、课程不足和课程少于规定时间的反应

Dhaka University Journal of Biological Sciences Pub Date : 2023-02-02 DOI: 10.3329/dujbs.v31i2.60889

M. K. Uddin, Jakia Rahman, Tazbina Zaman, Khadiza Ahsan

{"title":"Reactions of Students Towards Class Cancellation, Class Rescheduling, Inadequate Classes and Classes for Less Than Designated Duration in Dhaka University","authors":"M. K. Uddin, Jakia Rahman, Tazbina Zaman, Khadiza Ahsan","doi":"10.3329/dujbs.v31i2.60889","DOIUrl":"https://doi.org/10.3329/dujbs.v31i2.60889","url":null,"abstract":"A serious departure from the norm in taking classes has been a regular phenomenon in the University of Dhaka in recent years. The present study aimed to investigate perceptions, reactions, and grievances of students towards class cancellation, class rescheduling, inadequate classes, and classes for less than duration at the University of Dhaka. Data were collected online from 522 students (51.5% male and 48.5% female, mean age = 21.74 years) of the university using a mixed-method design. The quantitative data were analyzed by t-test, Chi-square test, and Pearson product-moment correlation coefficients in SPSS version 24. The results of the t-test demonstrated no significant gender differences in perception towards the main variables. The Chi-square test reveals that the frequencies of occurrences of these phenomena significantly differ among the faculties of four hierarchical positions. The content analysis of the qualitative data revealed 12 major themes namely the four factors across academic units, the favorable impact of these phenomena, increased absenteeism, the sources of stress, anxiety, and frustration, lack of priority, teachers’ disinterest in teaching and learning, a sense of punctuality and responsibility, mutual understanding, timetable of the rescheduled classes, teacher’s accountability and students’ feedback, introducing training for teachers, and the role of authority. The findings of the study suggest a clear lack of administrative control over the teaching behavior of the faculties. The study recommends that the university authority should immediately address these issues to redress the grievances of the students and thereby ensure a quality culture in teaching, learning and research.\u0000Dhaka Univ. J. Biol. Sci. 31(2): 309-319, 2022 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90252513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0