Dhaka University Journal of Biological Sciences最新文献_第2页

A taxonomic survey of pteridophytic flora of Lalmai Pahar and Mainamati of Cumilla district, Bangladesh 孟加拉国库米拉县 Lalmai Pahar 和 Mainamati 的翼手目植物区系分类调查

Dhaka University Journal of Biological Sciences Pub Date : 2024-04-08 DOI: 10.3329/dujbs.v33i1.72494

N. Tabassum, Momtaz Begum

引用次数: 0

Exopolysaccharide producing bacteria of Sundarban Mangrove Forest soil and their antibiotic sensitivity profile 孙德班红树林土壤外多糖产菌及其抗生素敏感性分析

Dhaka University Journal of Biological Sciences Pub Date : 2023-07-20 DOI: 10.3329/dujbs.v32i2.67683

Zennathara, S. Afrin, Mohammad Ali, M. Islam, M. Saha

{"title":"Exopolysaccharide producing bacteria of Sundarban Mangrove Forest soil and their antibiotic sensitivity profile","authors":"Zennathara, S. Afrin, Mohammad Ali, M. Islam, M. Saha","doi":"10.3329/dujbs.v32i2.67683","DOIUrl":"https://doi.org/10.3329/dujbs.v32i2.67683","url":null,"abstract":"This study focused on the investigation of Exopolysaccharide (EPS) producing bacteria from Sundarbans mangrove forest (SMF) soil, Bangladesh. The heterotrophic bacterial loads in the soil samples varied from 0.44×107 to 4.2×107 cfu/g indicating high bacterial load even under hostile environment. Fifteen EPS producing bacterial isolates were identified provisionally where thirteen isolates belonged to the genus Bacillus including B. badius (n=1, 6.67%), B. subtilis (n=3, 20.0%), B. pumilus (n=3, 20.0%), B. brevis (n=2, 13.33%), B. stearothermophilus (n=2, 13.33%), B. sphaericus (n=1, 6.67%) and B. alcalophilus (n=1, 6.67%). The remaining two isolates were recognized as the genus Micrococcus sp. (n=2, 13.33%). The genus Bacillus was predominant representing 86.67% abundance frequency. The LB medium was proven to be the most suitable medium for the growth of EPS producing bacterial isolates. 16S rDNA sequence analysis was conducted for three EPS producing bacterial isolates and they were identified as Bacillus subtilis, B. strearothermophilus and Micrococcus sp. The antibiogram profile of this study revealed streptomycin as the most effective antibiotic to control the growth of bacteria. The presence of antibiotic resistance bacteria in SMF soil is alarming for human health associated with this marine ecosystem. The multidrug resistance bacteria may come to the soil of SMF through the untreated discharged wastewaters and agricultural runoff from adjacent areas.\u0000Dhaka Univ. J. Biol. Sci. 32(2): 243-255, 2023 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"128 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88162746","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

Relapse of psychiatric patients during Covid- 19 pandemic Covid- 19大流行期间精神病患者的复发

Dhaka University Journal of Biological Sciences Pub Date : 2023-07-20 DOI: 10.3329/dujbs.v32i2.67674

Liza Akter, Farah Deeba

{"title":"Relapse of psychiatric patients during Covid- 19 pandemic","authors":"Liza Akter, Farah Deeba","doi":"10.3329/dujbs.v32i2.67674","DOIUrl":"https://doi.org/10.3329/dujbs.v32i2.67674","url":null,"abstract":"Relapse is a highly burdensome phenomenon in mental health care as it creates distress not only in the individual but also in the family and society. Therefore, detecting factors that are potential to develop relapse and the management measures for a psychiatric patient after relapse are very much important. The study was carried out to know whether different types of psychiatric patients were experiencing relapse due to the outbreak of the COVID-19 pandemic. A survey with telephonic interviews was conducted with 55 mental health professionals of Bangladesh. A total of 250 psychiatric patients’ information was collected. It was found that 56.40% of them relapsed after outbreak of the COVID-19 and most of them were females and young adult patients. Patients reported of suffering from anxiety disorders, depressive disorders, and obsessive-compulsive disorders before the COVID-19 relapsed more than the other disorders. The most reported causes of their relapse were fear of having COVID-19, feeling frightened and anxious due to uncertainty in the COVID-19 situation, feeling depressed due to social isolation and adjustment problems, and conflicts with family members. Relapsed patients had taken services mostly through telemedicine and tele-counseling rather than face-to-face services. Recommendations to the management of relapse of psychiatric patients in a pandemic based on the results of the study are discussed.\u0000Dhaka Univ. J. Biol. Sci. 32(2): 149-157, 2023 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88203283","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

Plankton seasonality and its relationship with some physicochemical factors in south-eastern coasts of Bay of Bengal, Bangladesh 孟加拉孟加拉湾东南海岸浮游生物季节性及其与某些理化因子的关系

Dhaka University Journal of Biological Sciences Pub Date : 2023-07-20 DOI: 10.3329/dujbs.v32i2.67673

P. K. Mozumder, Bipul Chandra Biswas, Md Abdur Rob Mollah

引用次数: 0

Distinctive feature training in Bangla consonants: distinguishing learning and working memory 孟加拉语辅音特征训练:区分学习与工作记忆

Dhaka University Journal of Biological Sciences Pub Date : 2023-07-20 DOI: 10.3329/dujbs.v32i2.67684

Tanzila Pias, Fariea Bakul, Mst Sonia Islam Nisha, Shahin Ahmed

{"title":"Distinctive feature training in Bangla consonants: distinguishing learning and working memory","authors":"Tanzila Pias, Fariea Bakul, Mst Sonia Islam Nisha, Shahin Ahmed","doi":"10.3329/dujbs.v32i2.67684","DOIUrl":"https://doi.org/10.3329/dujbs.v32i2.67684","url":null,"abstract":"Like other languages, Bangla has some phonetically distinct letters that make it difficult for young children to learn and pronounce. As a result, they make mistakes in the articulation of those letters. Results from earlier studies suggest that phonemes that are similar in sound become confusing for each other in short-term memory, which can create a barrier for learning and retention in long-term memory. However, any comprehensive study of the distinctive features of the Bangla alphabet has yet to be carried out. The goal of the current study was to determine whether there are any differences between the two independent groups' levels of learning and working memory (the training/experimental group, which received training in phonetic distinctive features, and the non-training/control group, which received no training). Children between seven and eight years of age were selected as participants in the study. The result of this experiment shows a clear connection between distinctive feature training and articulation. Specific training in some alphabet letters in Bangla helps the children in their letter learning and working memory. For children with articulation problems, distinctive feature training can bring about significant developments in terms of the number of errors and sound precision.\u0000Dhaka Univ. J. Biol. Sci. 32(2): 257-263, 2023 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78660137","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

Soil organic carbon stocks in the blue carbon habitats of Bangladesh 孟加拉国蓝碳栖息地的土壤有机碳储量

Dhaka University Journal of Biological Sciences Pub Date : 2023-07-20 DOI: 10.3329/dujbs.v32i2.67677

Md. Jashim Uddin, Arafat Rahman, A. M. E. Kibria, Ahmz Ali

{"title":"Soil organic carbon stocks in the blue carbon habitats of Bangladesh","authors":"Md. Jashim Uddin, Arafat Rahman, A. M. E. Kibria, Ahmz Ali","doi":"10.3329/dujbs.v32i2.67677","DOIUrl":"https://doi.org/10.3329/dujbs.v32i2.67677","url":null,"abstract":"A study was conducted in the coastal blue carbon habitats of Bangladesh regarding soil organic carbon (SOC) stocks. Fifty soil samples covering 10 soil profiles at five different depths level up to 1 m was considered to complete the above research. In the salt marsh sites, SOC ranged from 13.1 to 45.7 g/kg with a mean value of 27.5 g/kg. In the mangrove sites, SOC varied from 14.1 to 46.3 g/kg with a mean value 26.4 g/kg. In Mangrove ecosystem soils, clay contents showed a very strong positive correlation with SOC (r = 0.901 and p < 0.01) whereas silt showed a significant positive correlation with the SOC (r = 0.691 and p< 0.05) in the salt marsh sites. As the mangrove ecosystem holds more clay than the salt marsh ecosystem so it may be said that mangrove soils are more potential for carbon storage than salt marsh soils. The study revealed that both of these ecosystems hold more carbon than the threshold level (20.0 g/kg). It is suggested to protect and regenerate the blue carbon habitats in the coastal ecosystem considering the present findings to tackle climate change and other sudden disasters.\u0000Dhaka Univ. J. Biol. Sci. 32(2): 179-188, 2023 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76974352","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

Self-compassion and interpersonal reactivity among Bangladeshi University students 孟加拉大学生自我同情与人际反应

Dhaka University Journal of Biological Sciences Pub Date : 2023-07-20 DOI: 10.3329/dujbs.v32i2.67686

Masuda Afrin, Roufun Naher, M. R. Rabby

引用次数: 0

Mental health and perceived stress in relation to personality traits among Bangladeshi University students 孟加拉国大学生的心理健康和感知压力与人格特征的关系

Dhaka University Journal of Biological Sciences Pub Date : 2023-07-20 DOI: 10.3329/dujbs.v32i2.67682

Joyonto Dasgupto, Zinnatul Borak, M. R. Rabby

{"title":"Mental health and perceived stress in relation to personality traits among Bangladeshi University students","authors":"Joyonto Dasgupto, Zinnatul Borak, M. R. Rabby","doi":"10.3329/dujbs.v32i2.67682","DOIUrl":"https://doi.org/10.3329/dujbs.v32i2.67682","url":null,"abstract":"While attending university is a conceivably stressful situation, there is growing evidence that a sizable proportion of students suffer from mental health issues. The present study aims to observe the mental health issues, perceived stress, and personality traits among Bangladeshi university students well as to identify whether personality traits are associated with mental health status or perceived stress among university students. 300 conveniently sampled university students participated in a web-based cross-sectional survey that collected demographic information as well as results from the Bangla GHQ-12, Bangla PSS-10, and Bangla BFPT-44 scales. The average score of mental health-related issues and perceived stress was 15.91 and 20.20, respectively. Neuroticism was significantly associated with mental health issues (B = .473, AR2 = .423, 95% CI: .450 to .690) as well as with stress (B = .401, AR2 = .222, 95% CI: .211 to .382). Agreeableness, extraversion, and conscientiousness were also found to be significantly associated with mental health issues and stress (p<.001). Since neuroticism is associated with a higher risk of mental health issues and higher levels of perceived stress in students, and extraversion, conscientiousness, and agreeableness are associated with a lower risk, this information can be used to design preventative and educational programs that focus on these specific personality traits.\u0000Dhaka Univ. J. Biol. Sci. 32(2): 233-241, 2023 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90988193","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

Psychological well-being and coping strategies of the forcefully displaced Rohingya refugees 被迫流离失所的罗兴亚难民的心理健康和应对策略

Dhaka University Journal of Biological Sciences Pub Date : 2023-07-20 DOI: 10.3329/dujbs.v32i2.67675

Mehrin Mostafa Mumu, M. R. Rabby, Parveen Huque

{"title":"Psychological well-being and coping strategies of the forcefully displaced Rohingya refugees","authors":"Mehrin Mostafa Mumu, M. R. Rabby, Parveen Huque","doi":"10.3329/dujbs.v32i2.67675","DOIUrl":"https://doi.org/10.3329/dujbs.v32i2.67675","url":null,"abstract":"Despite the immensity and severity of the Rohingya refugee crisis, information on their psychological well-being and coping mechanisms are limited. This work aims to synthesize research on the mental health and coping strategies of Rohingya refugees. Forty-four purposely sampled refugees completed a cross-sectional survey in the form of a structured interview, providing demographic information as well as responses on the Bangla Psychological well-being measure and the Bangla coping scale. The mean score for respondents' psychological well-being was 246.9 (SD = 25.39), while the mean score for adaptive coping was 35.93 (SD = 4.64) and the mean score for nonadaptive coping was 26.29 (SD = 3.76). Results showed a statistically significant difference (t= -2.185, p<.05) in adaptive coping scores between single/unmarried and married participants. Awareness of past traumatic experiences needs to be harmonized with consideration of existing stressors and factors pertaining to future concerns. It is imperative to construct mental health interventions that mobilize the individual and community capabilities of Rohingya refugees.\u0000Dhaka Univ. J. Biol. Sci. 32(2): 159-166, 2023 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83187087","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

Determination of antibiotic resistance pattern of bacteria isolated from livestock feces 家畜粪便中分离细菌的抗生素耐药性模式测定

Dhaka University Journal of Biological Sciences Pub Date : 2023-07-20 DOI: 10.3329/dujbs.v32i2.67685

Sahri Rahman, A. Noman, M. Islam, S. Ahsan

{"title":"Determination of antibiotic resistance pattern of bacteria isolated from livestock feces","authors":"Sahri Rahman, A. Noman, M. Islam, S. Ahsan","doi":"10.3329/dujbs.v32i2.67685","DOIUrl":"https://doi.org/10.3329/dujbs.v32i2.67685","url":null,"abstract":"In Bangladesh, antibiotics are given to animals in order to improve their health and productivity. This can, however, lead to development of antibiotic resistance in the bacteria and subsequent transfer of the resistance property to human. Twenty one bacteria were isolated from five livestock fecal samples collected from Chankharpul, Sadarghat and Savar. Seven of the most commonly used antibiotics (Streptomycin, Chloramphenicol, Ciprofloxacin, Azithromycin, Oxytetracycline, Co-trimoxazole and Erythromycin) in animal feed in Bangladesh were tested. All (100%) the isolates were sensitive to Chloramphenicol and Tetracycline. Highest resistance was shown to Oxacillin (52.38%) followed by Erythromycin (33.33%) and Streptomycin (33.33%), Azithromycin (23.81%), Oxytetracycline (19.05%) and Ciprofloxacin (19.05%) and finally Co-trimomoxazole (14.29%). Four (19%, n = 21) of the bacteria were resistant to three or more antibiotics and were hence multidrug resistant. All isolates from Chankharpul were resistant to Streptomycin, Erythromycin and Oxacillin whereas all were sensitive to Chloramphenicol and Tetracycline. In case of Sadarghat, highest resistance (67%) was shown to Azithromycin and least (0 %) to Oxytetracycline, Streptomycin and Tetracycline. Isolates from Savar showed highest resistance (87.5%) to Oxacillin and all were sensitive to Chloramphenicol. Based on the findings of this study, we recommend the use of Chloramphenicol and Tetracycline for the treatment of livestock. High resistance to Streptomycin, Erythromycin, Oxacillin and Azithromycin suggests that the use of these antibiotics must be restricted in animal feed.\u0000Dhaka Univ. J. Biol. Sci. 32(2): 265-269, 2023 (July)","PeriodicalId":11095,"journal":{"name":"Dhaka University Journal of Biological Sciences","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80216381","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