A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  

  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
The end of the list has been reached or no journals were found for your choice.
Similar Journals
Journal Cover
Journal of the Asiatic Society of Bangladesh, Science
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1016-6947 - ISSN (Online) 1016-6947
Published by Bangladesh Journals Online Homepage  [87 journals]
  • Host range, damage extent and leaf consumptions by the bagworm,

    • Authors: Md Mohasin Hussain Khan
      Pages: 1 - 17
      Abstract: Bagworm, Thyridopteryx ephemeraeformis Haw. (Lepidoptera: Psychidae) is a polyphagous pest in Northern America and southern Australia, causing severe damage to several host plants. A study was conducted to record the host plants, damage extent, and morphometrics of bagworms in Patuakhali Science and Technology University (PSTU) from 2015 to 2018. Results revealed a limited number of host plants for bagworm namely guava (Psidium guajava), arborvitae/juniper (Thuja standishii), rangan or jungles, geranium (Ixora grandiflora/Ixora coccinea), mussaenda (Mussaenda philippica), cropperleaf (Acalypha wilkesiana ‘Ceylon), henna (Lawsonia inermis), mango (Mangifera indica), pomegranate (Punica granatum) and betel nut (Areca catechu). The length of tiny larvae, fully-grown larvae, pupa, adult winged male moths, and wingless adult maggot-like females was 1.02 mm, 24.8 mm, 14 mm, 15 mm, and 48 mm, respectively. The average length of the bag was 24.7 mm with a range of 21-28 mm, and the average breadth in the middle of the bag was 6.9 mm with a range of 6-8 mm. The highest number of larval cases per branch was found in guava (56), and the lowest was in copperleaf (8). The highest percent of leaf damage (86.23%) per plant was also observed in the guava plant, and the lowest percent of leaf damage (37.46%) was in copperleaf. The highest number of infested leaves and bags per leaf was observed in the lower stratum of the guava branch, while the lowest infestation was in the top stratum. The highest percentage of leaf area (30%) damage was recorded 72 hours after release (HAR), and the lowest percentage of leaf area (10%) damage was at 24 HAR in guava. The maximum amount of leaf was consumed by bagworm larva at 72 HAR and the minimum amount was consumed at 24 HAR in guava. The maximum leaf area (13.46 cm2) consumption was recorded at 72 HAR, while the minimum amount (3.42 cm2) was consumed at 24 HAR. No significant damage by T. ephemeraeformis was observed in the case of mango, pomegranate, and betel nut plants. J. Asiat. Soc. Bangladesh, Sci. 48(1-2): 1-17, June-December 2022
      PubDate: 2023-02-27
      DOI: 10.3329/jasbs.v48i1-2.64511
      Issue No: Vol. 48, No. 1-2 (2023)
  • An ethnobotanical survey of medicinal plants focusing on cardiovascular
           diseases used by the local people in and around Dinajpur district,

    • Authors: Atiya Begum Rifat, Farhana Yesmin Mitu, Tahmina Haque, Md Abdur Rahman, Md Abdul Mazid, Mohammad Zashim Uddin
      Pages: 19 - 40
      Abstract: This study aimed to document the medicinal plants through semi-structured interviews, key informant discussions, and informal conversations with local people in and around the Dinajpur district, Bangladesh. A total of 109 medicinal plant species distributed in 60 families with 210 formularies to treat 55 ailments were recorded. The most frequently utilized plant populations were herbs, followed by trees, shrubs, and climbers. Oral consumption was the main mode of treatment in the study area and was followed by external application. The highest factor of informant consensus (Fic) values was found in heart disease, followed by diabetes, gastrointestinal disorders, skin disease, respiratory disorders, sexual disease, and cuts and wounds. In the present survey, eight species have attained a fidelity level of 100 percent (Fl). Among the plants, 25 species have been used to treat cardiovascular diseases. The most cited medicinal plants for cardiac management are Terminalia arjuna (Roxb. ex DC.) Wight & Arn., Baccaurea ramiflora Lour., Dillenia indica L., Allium sativum L., Tamarindus indica L., Rauvolfia serpentina (L.) Benth. ex Kurz., Terminalia chebula Retz., Phyllanthus emblica L., Averrhoa carambola L. and Spondias pinnata (L. f.) Kurz. The ethnobotanical uses of the documented plants provide basic data, and further investigation focusing on pharmacological research is essential to confirm the results. Numerous threats to medicinal plants were identified during the ethnobotanical survey in the study area. Some recommendations are provided to mitigate the threats and the conservation of medicinal plants. J. Asiat. Soc. Bangladesh, Sci. 48(1-2): 19-40, June-December 2022
      PubDate: 2023-02-27
      DOI: 10.3329/jasbs.v48i1-2.64512
      Issue No: Vol. 48, No. 1-2 (2023)
  • Presence of methyl paraben in anti-diabetic herbal preparations

    • Authors: Nazmul Islam, Rausan Zamir, Md Omar Faruque, Md Safiur Rahman
      Pages: 41 - 52
      Abstract: Plant-based hypoglycemic therapeutics have been increasing in consumption due to the escalation of type 2 diabetes and its related complications. However, the safety of the preparations is little understood. Parabens (alkyl esters of p-hydroxybenzoic acid) are widely used as preservatives in these pharmaceuticals. However, the presence of methylparaben in formulations raises anxiety due to its potential endocrine disruption functions. Endocrine disruption could lead to undesirable health abnormalities and carcinogenic, estrogenic, and adverse reproductive effects. The present investigation directs toward estimating of methylparaben in some anti-diabetic herbal preparations using UV- Vis spectrophotometric method abiding by International Conference on Harmonization (ICH) guidelines for validation. The analytical wavelength of methylparaben in methanol was determined and found at 256.5 nm. The method obeys Beer’s law in the analytical range and has a good coefficient of determination (r2= 0.9881). The limit of detection (LOD) and limit of quantification (LOQ) were 0.19 ppm and 0.57 ppm, respectively. Recoveries were 91.3-98.8% in analyte-free plant matrix and 91-105.8 % in a diluent. The coefficient of variation (CV%) varied between 0.005- 0.268% for different standards. Results of forty-eight anti-diabetic herbal preparations showed methylparaben was detected in thirty-four samples in the range of 13.12 – 325.13 mg/day with a mean exposure value of 78.25 mg/day. However, none of the samples raise concerns about safety (the safety ceiling for paraben is 420 mg/day). More investigation is required to determine, whether the herbal drugs are safe to consume in terms of methylparaben. J. Asiat. Soc. Bangladesh, Sci. 48(1-2): 41-52, June-December 2022
      PubDate: 2023-02-27
      DOI: 10.3329/jasbs.v48i1-2.64513
      Issue No: Vol. 48, No. 1-2 (2023)
  • Community structure, ecology, and conservation issues of avifauna of two
           human-dominated landscapes in Faridpur district, Bangladesh during
           Covid-19 pandemic

    • Authors: Dipto Biswas, Mohammad Firoj Jaman, Md Mahbub Alam, Md Fazle Rabbe, Ashikur Rahman Shome
      Pages: 53 - 66
      Abstract: A study was conducted on community structure, ecology, and conservation issues of the avifauna of two human-dominated landscapes in a lower Ganges Madhukhali Upazila, under the Faridpur district during the COVID-19 pandemic period. Direct field observations were made from April 2020 to March 2021. In total, 109 species of birds belong to 18 orders, and 49 families were observed, with a total count of 5,453 individuals. Resident bird species (93 species, 85.32%) dominant in the study area, whereas the migratory species were only 16 (14.68%). The highest number of bird species (93 species, 85.32%) with the highest number of individuals (n=3171, 58.15%) was observed in Beleswar (rural site) area. Shannon diversity index value (H=3.89, Ds= 0.9724) was higher in the rural site than Madhukhali municipal area (urban site). In the winter season, the highest number of bird species (95 species, 87.15%) with the highest number of individuals (n=2303, 42.23%) was observed. Among micro-habitats, trees, particularly the native tree species, were the preferable sites for bird nesting, foraging, and roosting. Among birds, Acridotheres tristis was the most abundant species (n=316, 5.79%) in the study area, and an uneven distribution of species in the community structure was observed. The abundance of birds shows that 59 (54.12%) species were very common, 8 (7.33%) common, 9 (8.25%) uncommon, and 33 (30.27%) rare. Among the bird species, Ichthyophaga ichthyaetus was categorised as Near Threatened (NT), and the rest are Least Concerned (IUCN Bangladesh 2015). Illegal hunting of birds, especially waterbirds, is the major threat in the rural site. Preparing a proper management plan based on the baseline data is essential for protecting of avian diversity in the study area. J. Asiat. Soc. Bangladesh, Sci. 48(1-2): 53-66, June-December 2022
      PubDate: 2023-02-27
      DOI: 10.3329/jasbs.v48i1-2.64514
      Issue No: Vol. 48, No. 1-2 (2023)
  • Monitoring and eco-friendly management of cucurbit fruit fly, Bactrocera
           cucurbitae (Coquillett) on bitter gourd

    • Authors: Tonmoy Mondal, Md Adnan Al Bachchu, Roushan Ara, Md Nizam Uddin, Mohammad Mosharof Hossain Bhuyain, Rejvy Sultana
      Pages: 67 - 82
      Abstract: An experiment was conducted to assess the adequacy of distinctive management practices, viz. yellow sticky trap set at 50, 100, and 150 cm height, fruit fly bait with a mashed sweet gourd (MSG), bagging, sanitation, and Ecomec 1.8 EC at the rate of 1mL per liter of water sprayed at 7 days interval. The experiment was carried out with a randomized complete block design (RCBD) with 8 treatments and 3 replications. All the treatments significantly differed from the control. The total highest number and weight of healthy fruits were recorded in bagging (41.33 and 6.08 kg) but the lowest in control (19.00 and 2.22 kg, respectively). No infested fruits were found in bagging, meanwhile, the highest number and weight of infested fruits were counted in control (13.00 and 1.27 kg). In addition, bagging appeared to have no percent of infestation by number and weight. The highest percent of fruit infestation was found in control (40.75% and 36.48%) treatments based on number and weight. No wet reduction was found in the bagging treatment and the highest percent weight reduction per fruit was recorded in Ecomec 1.8 EC (30.17%). The highest number of larval densities were found in fruit fly bait with MSG (15.83) and the lowest in a yellow sticky trap set at 150 cm height (6.7). The highest number of fruit flies in a yellow sticky trap set at 50 cm height was captured on 21 March 2021 (4.33) and the lowest was on 29 April 2021 (1.33). The highest number of fruit flies were captured in a yellow sticky trap set at 50 cm height (43/trap) and the lowest in a bait trap with MSG (9.70/bait). The highest yield and increase of yield over control were found in bagging (12.16 tons/ha and 176.10%). J. Asiat. Soc. Bangladesh, Sci. 48(1-2): 67-82, June-December 2022
      PubDate: 2023-02-27
      DOI: 10.3329/jasbs.v48i1-2.64515
      Issue No: Vol. 48, No. 1-2 (2023)
  • Use of bagasse to remove 2-chlorophenol in aqueous system

    • Authors: Md Nurul Amin, Md Ibrahim Khalil, Zakia Amin
      Pages: 83 - 95
      Abstract: The adsorption method using waste bagasse has been examined to remove 2-chlorophenol (2-CP) from aqueous solutions at room temperature. The adsorption of 2-chlorophenol by bagasse carbon could be studied in batches by changing the contact time, operating temperature, pH of the solution, initial concentration, adsorbent dose, and particle size. It took three hours to reach equilibrium. The Langmuir model correctly predicted the adsorption equilibrium data for 2-chlorophenol-sorbent systems in the concentration range that was examined. When the pH was lower, getting rid of 2-CP from surfaces was easier. Studies of desorption show that chemisorption is an important part of the adsorption process. J. Asiat. Soc. Bangladesh, Sci. 48(1-2): 83-95, June-December 2022
      PubDate: 2023-02-27
      DOI: 10.3329/jasbs.v48i1-2.64516
      Issue No: Vol. 48, No. 1-2 (2023)
  • Evaluation of pant characteristics and physiological performance of
           mungbean (Vigna radiata (L.) Wilczek) genotypes under salt stress

    • Authors: Haider Iqbal Khan, Md Ayub Hossain Khan, Totan Kumar Ghosh, MA Baset Mia
      Pages: 97 - 110
      Abstract: Mungbean is a delicious popular pulse crop whose yield is hampered by biotic and abiotic factors. Salinity is considered serious abiotic stress that hinders growth and yield drastically. To find out the response features of salinity tolerance in mungbean, a series of experiments were carried out in the Department of Crop Botany of BSMRAU. The experiment was performed in the greenhouse of the Crop Botany department using nutrient solution under hydroponics conditions. Initially, fifty-two mungbean genotypes were used in the experiment to screen out a susceptible and tolerant genotype. The results indicated that salinity affected the plants at various morphological characteristics namely plant height, and dry matter of root, stem, and fruit. The genotypes were placed in four groups based on their performance in salinity. A higher quantity of proline with a lower amount of Malon-dialdehyde was observed with the increase in salinity. Chlorophyll content increased initially and after that declined sharply. The susceptible genotype resulted in a sharp decline of chlorophyll and increased proline content which reflected the 1accumulation of root and shoot dry matter, and consequently, the total dry matter content compared to that of the tolerant genotype. J. Asiat. Soc. Bangladesh, Sci. 48(1-2): 97-110, June-December 2022
      PubDate: 2023-02-27
      DOI: 10.3329/jasbs.v48i1-2.64517
      Issue No: Vol. 48, No. 1-2 (2023)
  • Effects of feeds on selected shellfish (Macrobrachium rosenbergii) and
           finfishes (Planiliza persia and Rhinomugil corsula) in polyculture system:
           profitability and viability

    • Authors: Mafia Akter, Israt Nur Suravi, Md Shahidul Islam
      Pages: 111 - 122
      Abstract: The experiment was conducted at earthen ponds in the Bagerhat sadar upazila of Bagerhat to examine the growth, production capacity, and economic return of freshwater prawn (Macrobrachium rosenbergii) with persa (Planiliza persia) and corsula mullet (Rhinomugil corsula) under polyculture system. Four treatments, designated as T1, T2, T3, and T4 were used in the study, each with three replicates. The final weight of the prawns after 120 days of culture was highest in T1 (72.07 g) and lowest in T4 (50.23 g), but there was no significant difference in prawn growth between T1 and T2. In T4, where artificial feed was not employed, prawn, persa, and corsula mullet growth and survival rates were lower. T1 produced more prawns (173.27 kg ha-1), while T4 produced less (617.83 kg ha- 1). Significantly (p<0.05) higher production of persa was found in T1 (295.97 kg ha-1) and lower in T4 (152.28 kg ha-1). Corsula production was also observed to be higher in T1 (275.70 kg ha-1) and lower in T4 (155.36 kg ha-1). However, T1 had much higher total production and net profit from prawn and fish farming (1744.94 kg ha-1, BDT 244694.75 ha-1), whereas T4 had a significantly lower total production and net profit (925.46 kg ha-1, BDT 115894.42 ha-1). According to the study, quality feed (T1) outperforms other commercial feeds in terms of growth, production, and net profit. In order to increase productivity and get a high return on investment in a short period of time. The quality feed can be recommended. J. Asiat. Soc. Bangladesh, Sci. 48(1-2): 111-122, June-December 2022
      PubDate: 2023-02-27
      DOI: 10.3329/jasbs.v48i1-2.64518
      Issue No: Vol. 48, No. 1-2 (2023)
  • Incidence of chilli mite on chilli varieties under field conditions

    • Authors: Sanjida Sultana, Md Ahsanul Haque Swapon, Md Shamim Hossain, Haider Iqbal Khan, Md Masudul Haque, MA Baset Mia
      Pages: 123 - 136
      Abstract: The current experiment was carried out to evaluate the occurrence of mites on chilli (Capsicum spp.) leaves. The trial was conducted in the experimental field and laboratory of RSRC, BARI, from December 2020 to April 2021. Three released varieties (viz. BARI Morich 1, BARI Morich 2, and BARI Morich 3) and six genotypes (Viz. G10, G13, G25, G27, G30, and G31) were used as the test crops of the experiment. The findings showed a considerable amount of variation among the treatments. Regarding the number of mites/leaf, the G25 had the highest mean number (7.24) whereas the G31 had the lowest (0.69). The G30 was the most productive in terms of yield (512.27 g/plant). The weight of each fruit and the number of fruits per plant were directly related to yield. On the contrary, the G10 and the G13 supplied an optimum yield per plant, whereas the G25 produced the least yield (21.02/plant). The correlation between yield and mite infestation was negative, and the results revealed that the BARI Morich-1, the G27, and the G31 were highly resistant to chilli mite infestation, and the G13, the BARI Morich-3, and the G30 were resistant, while the BARI Morich-2 was only moderately resistant. The G10 was tolerant and the G25 was susceptible to chilli mite infestation. The results concluded that the tested genotypes G13, G27, G30 and G31 showed remarkable resistance to mite infestation. J. Asiat. Soc. Bangladesh, Sci. 48(1-2): 123-136, June-December 2022
      PubDate: 2023-02-27
      DOI: 10.3329/jasbs.v48i1-2.64519
      Issue No: Vol. 48, No. 1-2 (2023)
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762

Your IP address:
Home (Search)
About JournalTOCs
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-