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Firoz Ahmed,권용주 한국교원대학교 뇌기반교육연구소 2022 Brain, Digital, & Learning Vol.12 No.4
This study was focused on the development of a graphic-based digital textbook for for Bangladesh’s higher secondary level student’s academic success and learning satisfaction in biology learning. In Bangladesh, the teaching method is traditionally traditional like a ‘Jug and Mug’, called teacher-centered learning; the instructor is at the center of all learning, and students are merely a listener. In the study, the researcher made an interactive digital textbook using Canva on human eyes to facilitate an interactive learning environment through various texts and activities to facilitate student-centered learning. Student-centered learning has not yet been introduced in Bangladesh. The data collection was carried out using the pretest-posttest control design. The researcher used both quantitative and qualitative methodologies in the experiment. The results indicate that the digital textbook is usable in the classroom despite of few infrastructural limitations and the experience digital textbook has been showed a high level of academic success.
An Efficient Mobility Management for Infrastructure-Based MANETs
Trung-Dinh Han,Firoz Ahmed,Hoon Oh 한국공학안전보건예술학회 2010 한국공학예술학회 논문지 Vol.2 No.-
Mobile nodes must be managed efficiently for the Internet connectivity of mobile ad hoc networks. The tree-based mobility management approach is highly dependable in that mobile nodes register with Internet gateway along tree paths from itself up to a gateway without using flooding. However, it is costly to resume on-going communication if a node belonging to an active path loses its connectivity to its parent. In this paper, we introduce a new approach in which a node maintains multiple parents whenever possible. A mobile node can still retain its upstream path to a gateway even though it loses connectivity to one of its parents. The new approach is evaluated against the tree-based method by resorting to simulation. The result shows that the new method outperforms the tree-based approach and also is very robust against the change of topology.
Analgesic and antidiarrhoeal activities of Treama orientalis Linn. in mice
Uddin, Sarder Nasir,Uddin, Khan Mohammad Ahsan,Ahmed, Firoz Kyung Hee Oriental Medicine Research Center 2008 Oriental pharmacy and experimental medicine Vol.8 No.2
Trema orientalis Linn. is commonly grown in many parts of Bangladesh. Its leaves have been used for analgesic and anti-diarrhoeal activity in traditional medicine. This study evaluates the potential analgesic and anti-diarrhoeal activity of methanol and aqueous extracts of leaves in experimental acetic acid induced writhing and castor oil induced diarrhoea in mice. The aqueous extract of leaves showed significant (P < 0.001) analgesic effect in acetic acid induced writhing in mice at a dose of 500 mg/kg body weight In castor oil induced antidiarrhoeal screening both extract increased latent period (P < 0.025) and decrease the number of stool (P < 0.025) at the dose of 500 mg/kg body weight comparable with that of the standard drug loperamide. The results provide a support for the use of this plant in traditional medicine and suggest its further investigation.
Analgesic and antidiarrhoeal activities of Treama orientalis Linn. in mice
Sarder Nasir Uddin,Khan Mohammad Ahsan Uddin,Firoz Ahmed 경희대학교 융합한의과학연구소 2008 Oriental Pharmacy and Experimental Medicine Vol.8 No.2
Trema orientalis Linn. is commonly grown in many parts of Bangladesh. Its leaves have been used for analgesic and anti-diarrhoeal activity in traditional medicine. This study evaluates the potential analgesic and anti-diarrhoeal activity of methanol and aqueous extracts of leaves in experimental acetic acid induced writhing and castor oil induced diarrhoea in mice. The aqueous extract of leaves showed significant (P < 0.001) analgesic effect in acetic acid induced writhing in mice at a dose of 500 mg/kg body weight In castor oil induced antidiarrhoeal screening both extract increased latent period (P < 0.025) and decrease the number of stool (P < 0.025) at the dose of 500 mg/kg body weight comparable with that of the standard drug loperamide. The results provide a support for the use of this plant in traditional medicine and suggest its further investigation. Trema orientalis Linn. is commonly grown in many parts of Bangladesh. Its leaves have been used for analgesic and anti-diarrhoeal activity in traditional medicine. This study evaluates the potential analgesic and anti-diarrhoeal activity of methanol and aqueous extracts of leaves in experimental acetic acid induced writhing and castor oil induced diarrhoea in mice. The aqueous extract of leaves showed significant (P < 0.001) analgesic effect in acetic acid induced writhing in mice at a dose of 500 mg/kg body weight In castor oil induced antidiarrhoeal screening both extract increased latent period (P < 0.025) and decrease the number of stool (P < 0.025) at the dose of 500 mg/kg body weight comparable with that of the standard drug loperamide. The results provide a support for the use of this plant in traditional medicine and suggest its further investigation.
Md Abu Sayem Khan,Rifat Parveen,Sheikh Ariful Hoque,Md Firoz Ahmed,Abu Shara Shamsur Rouf,Sabita Rezwana Rahman 경희대학교 융합한의과학연구소 2023 Oriental Pharmacy and Experimental Medicine Vol.23 No.3
Emergence of antiviral drug resistance in influenza virus remains a major public health concern worldwide. Nowadays, different herbs receive renewed attention because of their enormous antiviral potential. In this study, we investigated the antiviral activity of Camellia sinensis, Persicaria hydropiper, Persicaria orientale, Persicaria lapathifolia, Persicaria stagnina, Mucuna pruriens and Chenopodium album against different influenza strains using both in vitro and in silico approaches. Antiviral effect of plant extracts was evaluated by cytopathic effect (CPE) inhibition assay on influenza infected MDCK (Madin Darby Canine Kidney) cell line. Later, the herb demonstrating antiviral activity was virtually screened for their available bioactive compounds and multiple in silico tools were performed to prioritize and establish these compounds as potential inhibitor. The methanol, but not the n-hexane and ethyl acetate extracts of C. sinensis, P. hydropiper, M. pruriens and C. album exhibited anti-influenza effect with EC50 values within 32–46 μg/ml. Importantly, the extracts remained effective against both amantadine-resistant and -sensitive influenza isolates. The molecular docking analysis showed that flavonoids, steroid and derivatives had strong binding affinity to the target proteins which may remain responsible for the anti-influenza characteristics of plant extracts. Pharmacokinetic properties, bioavailability and drug-likeness score revealed that ferulic acid, sinapic acid, campesterol, cryptomeridiol, eupatin and genistein could be attractive leads as potential influenza inhibitors. Taken together, the botanical ingredients of these herbs could be used as valuable candidates for developing novel therapeutics to control influenza related illnesses.