http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Kibria, S.S. (검색결과 25 건)
- 무료
- 기관 내 무료
- 유료
-
Kibria, A . K . M . Fazle,Mo, Young Hwan,Yun, Min Hee,Kim, Moon J .,Nahm, Kee Suk 한국화학공학회 2001 Korean Journal of Chemical Engineering Vol.18 No.2
Multi-wall carbon nanotubes (MWNTs) were synthesized by catalytic decomposition of acetylene over Fe, Ni and Fe-Ni bimetallic catalysts supported on alumina under various controlled conditions. The growth density and diameter of CNTs were markedly dependent on the activation time of catalysts in H₂atmosphere, reaction time, reaction temperature, flow rate of acetylene, and catalyst composition. Bimetallic catalysts were apt to produce narrower diameter of CNTs than single metal catalysts. For the growth of CNTs at 600℃ under 10/100 sccm flow of C₂H₂/H₂mixture, the narrowest diameter about 20 nm was observed at the reaction time of 1 h for 20Fe : 20Ni 60 Al₂0O catalyst, but at that of 1.5 h for 10Fe : 30Ni : 60Al₂O₃ catalyst. It was considered that the diameter and density of CNTs decreased with the increase of the growth time mainly due to hydrogen etching. The growth of CNTs followed the tip growth mode.
-
DEVELOPMENT OF STRAW BASED RATION FOR FEEDING RUMINANTS
Kibria, S.S.,Islam, M.R.,Saha, C.K. Asian Australasian Association of Animal Productio 1991 Animal Bioscience Vol.4 No.3
A CRD experiment with thirty growing cross bred calves were assigned at random to three treatments rations. 1) $T_0$, 0% Urea + 20% M. O. cake, 2) $T_1$, 1% Urea + 10% M. O. cake and 3) $T_2$, 2% Urea + 0% M. O. cake to develop a rice straw based ration for ruminants. Sweetish odour and yellowish colour were observed in good recovered silage. Organic matter varied from 87.45% to 89.63% whereas crude protein varied from 14.0% to 14.5% in each treatment. No significant differences were found among the nutrient composition of the ration. The dry matter in take (DMI) and dry matter digestibility was higher in $T_0$ (0% Urea) than those of ration containing 1% ($T_1$) and 2% Urea ($T_2$). The organic matter digestibility decreases with increasing doses of urea. The crude protein & nitrogen-free-extract digestibility were found higher in the ration $T_1$ containing 1% urea whereas crude fibre digestibility and available metabolizable energy (ME) were higher in $T_0$ containing no urea as compared to $T_1$ and $T_2$. Total digestible nutrient (TDN) decreases with the increase of urea level. The highest feed efficiency was found in $T_0$ having no urea and lowest was in $T_2$. The animals gained in weights from each ration. Highest gain in weight was found in $T_0$ ration, then followed $T_1$, and $T_2$. This is due to natural protein available in M. O. cake only. It is concluded that supplemetation of urea or M. O. cake with readily available energy source as molasses upto 20% of total dietary dry matter in a complete ration may increase the intake of low quality fibrous roughage only when nitrogen and mineral are not limiting factor.
-
Kibria, B.M.-Golam The Korean Statistical Society 2004 Journal of the Korean Statistical Society Vol.33 No.4
The shrinkage preliminary test ridge regression estimators (SPTRRE) based on Wald (W), Likelihood Ratio (LR) and Lagrangian Multiplier (LM) tests for estimating the regression parameters of the multiple linear regression model with multivariate Student's t error distribution are considered in this paper. The quadratic biases and risks of the proposed estimators are compared under both null and alternative hypotheses. It is observed that there is conflict among the three estimators with respect to their risks because of certain inequalities that exist among the test statistics. In the neighborhood of the restriction, the SPTRRE based on LM test has the smallest risk followed by the estimators based on LR and W tests. However, the SPTRRE based on W test performs the best followed by the LR and LM based estimators when the parameters move away from the subspace of the restrictions. Some tables for the maximum and minimum guaranteed efficiency of the proposed estimators have been given, which allow us to determine the optimum level of significance corresponding to the optimum estimator among proposed estimators. It is evident that in the choice of the smallest significance level to yield the best estimator the SPTRRE based on Wald test dominates the other two estimators.
-
-
Kibria, Mohammad Golam,Anik, Sawon Istiak Institute of Forest Science 2010 Journal of Forest Science Vol.26 No.1
This paper analyzes data on the plant species diversity and their contribution to the livelihoods of rural people in five villages of Domar upazila, Nilphamari district, Bangladesh. Assessment was done by means of multistage random sampling. Information collected from a total of 40 households ranging from small, medium and large categories. A total of 52 plant species belonging to 34 families were identified as being important to local livelihoods. Fruits (37%), timber (23%) and medicinal (17%) species were the most important plant use categories. Determination of the relative density of the different species revealed that Areca catechu constitutes 19.17% of homestead vegetation of the area followed by Artocarpus heterophyllus, which occupies 10.34%. Margalef index showed that there is no major difference (5.11 for large, 5.49 for medium, 4.73 for small) across the different size classes and Shannon-Weiner Index of the study area varies from 2.75 to 2.98. Results show that the average annual homestead income varied from US$108.69 to US$291.67 and contribute 6.63% of the household income.
-
Kibria, Golam,Hatakeyama, Hiroto,Harashima, Hideyoshi 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.1
Multidrug resistance (MDR), the principal mechanism by which many cancers develop resistance to chemotherapy, is one of the major obstacles to the successful clinical treatment of various types of cancer. Several key regulators are responsible for mediating MDR, a process that renders chemotherapeutic drugs ineffective in the internal organelles of target cells. A nanoparticulate drug delivery system (DDS) is a potentially promising tool for circumventing such MDR, which can be achieved by targeting tumor cells themselves or tumor endothelial cells that support the survival of MDR cancer cells. The present article discusses key factors that are responsible for MDR in cancer cells, with a specific focus on the application of DDS to overcome MDR via the use of chemotherapy or macromolecules.
-
Al Kibria Gulam Muhammed,Gupta Rajat Das,Jannatun Nayeem 대한고혈압학회 2021 Clinical Hypertension Vol.27 No.4
Background: The prevalence of hypertension is increasing in Bangladesh, however, few recent studies investigated the proportion of people and factors associated with prevalence, awareness, and control of this condition in this country. This study investigated these among Bangladeshi adults. Methods: Using Bangladesh Demographic and Health Survey 2017–18 data, a cross-sectional study was conducted. Multilevel logistic regression analysis was employed after descriptive analysis and prevalence estimation. Results: Among 12,926 persons (mean age: 40 years, 57% women), the prevalence of hypertension was 27.4% (n = 3551), it was 28.4 and 26.2% among females and males, respectively. Among hypertensive people, about 42.4% (n = 1508) people were aware of having it, 48.7% among females and 33.5% among males. Of the 1313 people who were taking antihypertensive medication, only 33.8% (n = 443) had controlled hypertension, 34.7 and 31.7% among females and males, respectively. Among the studied factors associated with hypertension, people with older age, female gender, overweight/ obesity, diabetes, richer wealth quintiles, and residence in some administrative divisions had higher odds of hypertension (p < 0.05). However, the odds of awareness was lower among younger people, males, and people without overweight/obesity, diabetes, or richer wealth quintiles. Odds of controlled hypertension was also lower among people with older age and higher among college-educated people. Conclusion: This study identified several important factors associated with prevalence, awareness, and control of hypertension. It is important to address these factors with nationwide prevention and control programs.
-
Golam Kibria,Hiroto Hatakeyama,Hideyoshi Harashima 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.1
Multidrug resistance (MDR), the principalmechanism by which many cancers develop resistance tochemotherapy, is one of the major obstacles to the successfulclinical treatment of various types of cancer. Severalkey regulators are responsible for mediating MDR, aprocess that renders chemotherapeutic drugs ineffective inthe internal organelles of target cells. A nanoparticulatedrug delivery system (DDS) is a potentially promising toolfor circumventing such MDR, which can be achieved bytargeting tumor cells themselves or tumor endothelial cellsthat support the survival of MDR cancer cells. The presentarticle discusses key factors that are responsible for MDRin cancer cells, with a specific focus on the application ofDDS to overcome MDR via the use of chemotherapy ormacromolecules.
-
-
Mohammad Golam Kibria,Sawon Istiak Anik 강원대학교 산림과학연구소 2010 Journal of Forest Science Vol.26 No.1
This paper analyzes data on the plant species diversity and their contribution to the livelihoods of rural people in five villages of Domar upazila, Nilphamari district, Bangladesh. Assessment was done by means of multistage random sampling. Information collected from a total of 40 households ranging from small, medium and large categories. A total of 52 plant species belonging to 34 families were identified as being important to local livelihoods. Fruits (37%), timber (23%) and medicinal (17%) species were the most important plant use categories. Determination of the relative density of the different species revealed that Areca catechu constitutes 19.17% of homestead vegetation of the area followed by Artocarpus heterophyllus, which occupies 10.34%. Margalef index showed that there is no major difference (5.11 for large, 5.49 for medium, 4.73 for small) across the different size classes and Shannon-Weiner Index of the study area varies from 2.75 to 2.98. Results show that the average annual homestead income varied from US$108.69 to US$291.67 and contribute 6.63% of the household income.
DBpia연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
