i am shakil ahmed khan connect with education before i was connect from factory line . Now recently i work in education in cambridge system of A level since approx 12 years as sceince lal in all three subject of Bio , Chem ,
Research in Agriculture Livestock and Fisheries, 2021
An experiment was conducted to investigate the immune response induced in chickens by capsular ex... more An experiment was conducted to investigate the immune response induced in chickens by capsular extract of Pasteurella multocida isolated from rats wandering in and around the poultry farms. The rat isolate of P. multocida was isolated and identified by cultural, morphological, and biochemical characteristics, followed by capsular extract preparation and experimental vaccine development. The isolated P. multocida was found Gram-negative, non-motile, non-spore forming rod occurring singly or pains and occasionally as chains or filaments in Gram’s-staining method. The isolates consistently produced acid from dextrose, sucrose and mannitol but not fermented maltose or lactose. The Capsular antigen was extracted and confirmed by acriflavine test. Finally, experimental fowl cholera vaccine was prepared. Primary vaccination was performed at the dose rate of 5.6×107 CFU/ml through intramuscular and subcutaneous routes in birds of group A (10 birds) and group B (10 birds) and group C (10 bir...
Reasoning about observed effects and their causes is important in many applications. For instance... more Reasoning about observed effects and their causes is important in many applications. For instance, understanding why a plan failed can aid the task of replanning by allowing the agent to tailor a better plan. But under incomplete information, an agent may be unable to determine which actions/events caused an effect. To overcome this, the agent may be able to perform some sensing actions that allow him to figure out what caused the effect. This becomes even more important in multiagent contexts, where an agent may want to identify which agents caused some effect, or possibly prevent other agents from determining who caused something. The effects involved may even be epistemic effects, such as an agent coming to know the PIN of a bank card, and the causes may be sensing actions. Reasoning about such causes is a key part of "theory of mind" and understanding other agents’ behaviour. While there has been much work on causality from an objective standpoint, causality from the p...
Asian Journal of Medical and Biological Research, 2020
This study was aimed to isolate and identify the potential probiotic bacteria from broiler chicke... more This study was aimed to isolate and identify the potential probiotic bacteria from broiler chickens and their related environment of the two districts in Bangladesh by using cultural and biochemical techniques and detection of the selected isolated probiotic potential bacterial species by using polymerase chain reaction (PCR). In this context five probiotic bacteria species of five bacteria genera were screened out from 750 samples in where there were 186 Lactobacillus genus isolates, 102 Bacillus genus isolates, 112 Streptococcus genus isolates, 220 Enterococcus genus isolates and 33 Bifidobacteriumgenus isolates on the basis of biochemical properties like 10% solution of total 22 different sugars. Other biochemical tests like MR-VP, Oxidase, Catalase, Citrate utilization, MIU and Indole test were major. Genus was detected through specific genus target gene and 16S r DNA based PCR. Selected probiotic bacteria species were detected through species specific target gene PCR. We confir...
Background: Lead toxicity is one of the most frequently reported unintentional toxic heavy metal ... more Background: Lead toxicity is one of the most frequently reported unintentional toxic heavy metal exposures and the leading cause of single metal toxicity in children. Lead has no known beneficial function in human metabolism, rather its exposure has various detrimental effect on child health. Lead exposure causes activation of several cellular and molecular processer in leukemic cells so the purpose of the study was to measure serum concentration of lead in newly diagnosed acute lymphoblastic leukemia (ALL) patients.Methodology: The study group consisted of newly diagnosed ALL patients ranging from 2 to 12 years who were admitted at the Department of Pediatrics in Dhaka Medical College Hospital (DMCH), from February 2013 to January 2014 and age and sex matched healthy children’s were selected as controls. Serum measurements for lead were performed by Atomic absorption spectrophotometer in Analytical Chemistry Laboratory of Atomic Energy Centre Ramna, Dhaka.Results: The ALL group com...
Black quarter (BQ), caused by Clostridium chauvoei, is an economically important, highly infectio... more Black quarter (BQ), caused by Clostridium chauvoei, is an economically important, highly infectious bacterial disease of cattle, goat and sheep. The present study was conducted to isolate and identify the causal agent of BQ from field cases. A total of 32 samples from necropsied areas of cattle presented to the Teaching Veterinary Hospital, Bangladesh Agricultural University were collected. The samples were subjected for bacteriological culture followed by identification through a series of conventional bacteriological techniques, staining properties and biochemical tests. The bacteria were cultured in anaerobic condition using candle jar. Morphological characters of bacteria were observed after Gram stain. The suspected samples were subjected for several passages in liver infusion broth to get pure culture. On neomycin blood agar, the bacteria showed hemolysis. Based on the cultural and staining characteristics and biochemical tests, 4 (12.5%) out of 32 samples were confirmed as Cl. chauvoei. It is concluded that Cl. chauvoei has been successfully isolated and identified from BQ affected cattle.
A descriptive type of cross sectional study was conducted on 132 students of class IX and X of My... more A descriptive type of cross sectional study was conducted on 132 students of class IX and X of Mymensingh sadar upazilla during early April to late June, 2007. This study was performed to assess and compare the level of knowledge and practicing behavior of urban and rural students in regards to hand washing, bathing, tooth brushing and taking care of nail and hair. All the students were interviewed with a semi-structured questionnaire and observed with an observational check list. The mean age of the students was 14.5±0.94 years. The knowledge of the students regarding tube well water for drinking was significantly higher in rural area (98.3%) compared to urban area. In addition, tube well water was stated as safe for bathing by 77.3% and safe for washing by 80.3% students. Hand washing before meal with soap and water was found almost similar among urban and rural students but hand washing with soap and water after defecation was found significantly better practiced in urban (97.2%)...
International Journal of Sustainable Transportation, 2014
ABSTRACT The prevalence of urban sprawl, amplified levels of auto dependency, and nonwork travel ... more ABSTRACT The prevalence of urban sprawl, amplified levels of auto dependency, and nonwork travel during the afternoon peak hours have resulted in a steady increase in unsustainable patterns of travel in Canadian cities. Active and green modes of transportation along with smart growth have been promoted as a panacea. This article investigates the efficacy of such sustainable urban mobility strategies in Windsor, Ontario, using data records from a Household Travel Survey. Multinomial and mixed-logit models are developed to identify the factors influencing nonwork mode choice travel behavior. Next, the models are used in a scenario-building and simulation exercise to illustrate the benefits attained from jointly improving public transit, encouraging smart growth development, and lowering vehicle ownership. Based on the obtained results, embracing single-policy instruments is not an effective approach for reducing auto dependency in the study area. However, adopting a multidimensional policy approach that integrates land use and transportation policy instruments is proven more effective for achieving sustainable outcomes. It is recommended that the service and facilities for transit and nonmotorized modes be improved, and easier access to commercial and recreational activities be enhanced through progressive improvements to the built environment. Adoption of smart-growth strategies should be also pursued by planners and decision makers to create an environment conducive to reducing the levels of auto ownership. Such a goal is of paramount importance for sustainability because the level of auto ownership emerged as the most important policy instrument for reducing auto dependency in the study area.
Research in Agriculture Livestock and Fisheries, 2021
An experiment was conducted to investigate the immune response induced in chickens by capsular ex... more An experiment was conducted to investigate the immune response induced in chickens by capsular extract of Pasteurella multocida isolated from rats wandering in and around the poultry farms. The rat isolate of P. multocida was isolated and identified by cultural, morphological, and biochemical characteristics, followed by capsular extract preparation and experimental vaccine development. The isolated P. multocida was found Gram-negative, non-motile, non-spore forming rod occurring singly or pains and occasionally as chains or filaments in Gram’s-staining method. The isolates consistently produced acid from dextrose, sucrose and mannitol but not fermented maltose or lactose. The Capsular antigen was extracted and confirmed by acriflavine test. Finally, experimental fowl cholera vaccine was prepared. Primary vaccination was performed at the dose rate of 5.6×107 CFU/ml through intramuscular and subcutaneous routes in birds of group A (10 birds) and group B (10 birds) and group C (10 bir...
Reasoning about observed effects and their causes is important in many applications. For instance... more Reasoning about observed effects and their causes is important in many applications. For instance, understanding why a plan failed can aid the task of replanning by allowing the agent to tailor a better plan. But under incomplete information, an agent may be unable to determine which actions/events caused an effect. To overcome this, the agent may be able to perform some sensing actions that allow him to figure out what caused the effect. This becomes even more important in multiagent contexts, where an agent may want to identify which agents caused some effect, or possibly prevent other agents from determining who caused something. The effects involved may even be epistemic effects, such as an agent coming to know the PIN of a bank card, and the causes may be sensing actions. Reasoning about such causes is a key part of "theory of mind" and understanding other agents’ behaviour. While there has been much work on causality from an objective standpoint, causality from the p...
Asian Journal of Medical and Biological Research, 2020
This study was aimed to isolate and identify the potential probiotic bacteria from broiler chicke... more This study was aimed to isolate and identify the potential probiotic bacteria from broiler chickens and their related environment of the two districts in Bangladesh by using cultural and biochemical techniques and detection of the selected isolated probiotic potential bacterial species by using polymerase chain reaction (PCR). In this context five probiotic bacteria species of five bacteria genera were screened out from 750 samples in where there were 186 Lactobacillus genus isolates, 102 Bacillus genus isolates, 112 Streptococcus genus isolates, 220 Enterococcus genus isolates and 33 Bifidobacteriumgenus isolates on the basis of biochemical properties like 10% solution of total 22 different sugars. Other biochemical tests like MR-VP, Oxidase, Catalase, Citrate utilization, MIU and Indole test were major. Genus was detected through specific genus target gene and 16S r DNA based PCR. Selected probiotic bacteria species were detected through species specific target gene PCR. We confir...
Background: Lead toxicity is one of the most frequently reported unintentional toxic heavy metal ... more Background: Lead toxicity is one of the most frequently reported unintentional toxic heavy metal exposures and the leading cause of single metal toxicity in children. Lead has no known beneficial function in human metabolism, rather its exposure has various detrimental effect on child health. Lead exposure causes activation of several cellular and molecular processer in leukemic cells so the purpose of the study was to measure serum concentration of lead in newly diagnosed acute lymphoblastic leukemia (ALL) patients.Methodology: The study group consisted of newly diagnosed ALL patients ranging from 2 to 12 years who were admitted at the Department of Pediatrics in Dhaka Medical College Hospital (DMCH), from February 2013 to January 2014 and age and sex matched healthy children’s were selected as controls. Serum measurements for lead were performed by Atomic absorption spectrophotometer in Analytical Chemistry Laboratory of Atomic Energy Centre Ramna, Dhaka.Results: The ALL group com...
Black quarter (BQ), caused by Clostridium chauvoei, is an economically important, highly infectio... more Black quarter (BQ), caused by Clostridium chauvoei, is an economically important, highly infectious bacterial disease of cattle, goat and sheep. The present study was conducted to isolate and identify the causal agent of BQ from field cases. A total of 32 samples from necropsied areas of cattle presented to the Teaching Veterinary Hospital, Bangladesh Agricultural University were collected. The samples were subjected for bacteriological culture followed by identification through a series of conventional bacteriological techniques, staining properties and biochemical tests. The bacteria were cultured in anaerobic condition using candle jar. Morphological characters of bacteria were observed after Gram stain. The suspected samples were subjected for several passages in liver infusion broth to get pure culture. On neomycin blood agar, the bacteria showed hemolysis. Based on the cultural and staining characteristics and biochemical tests, 4 (12.5%) out of 32 samples were confirmed as Cl. chauvoei. It is concluded that Cl. chauvoei has been successfully isolated and identified from BQ affected cattle.
A descriptive type of cross sectional study was conducted on 132 students of class IX and X of My... more A descriptive type of cross sectional study was conducted on 132 students of class IX and X of Mymensingh sadar upazilla during early April to late June, 2007. This study was performed to assess and compare the level of knowledge and practicing behavior of urban and rural students in regards to hand washing, bathing, tooth brushing and taking care of nail and hair. All the students were interviewed with a semi-structured questionnaire and observed with an observational check list. The mean age of the students was 14.5±0.94 years. The knowledge of the students regarding tube well water for drinking was significantly higher in rural area (98.3%) compared to urban area. In addition, tube well water was stated as safe for bathing by 77.3% and safe for washing by 80.3% students. Hand washing before meal with soap and water was found almost similar among urban and rural students but hand washing with soap and water after defecation was found significantly better practiced in urban (97.2%)...
International Journal of Sustainable Transportation, 2014
ABSTRACT The prevalence of urban sprawl, amplified levels of auto dependency, and nonwork travel ... more ABSTRACT The prevalence of urban sprawl, amplified levels of auto dependency, and nonwork travel during the afternoon peak hours have resulted in a steady increase in unsustainable patterns of travel in Canadian cities. Active and green modes of transportation along with smart growth have been promoted as a panacea. This article investigates the efficacy of such sustainable urban mobility strategies in Windsor, Ontario, using data records from a Household Travel Survey. Multinomial and mixed-logit models are developed to identify the factors influencing nonwork mode choice travel behavior. Next, the models are used in a scenario-building and simulation exercise to illustrate the benefits attained from jointly improving public transit, encouraging smart growth development, and lowering vehicle ownership. Based on the obtained results, embracing single-policy instruments is not an effective approach for reducing auto dependency in the study area. However, adopting a multidimensional policy approach that integrates land use and transportation policy instruments is proven more effective for achieving sustainable outcomes. It is recommended that the service and facilities for transit and nonmotorized modes be improved, and easier access to commercial and recreational activities be enhanced through progressive improvements to the built environment. Adoption of smart-growth strategies should be also pursued by planners and decision makers to create an environment conducive to reducing the levels of auto ownership. Such a goal is of paramount importance for sustainability because the level of auto ownership emerged as the most important policy instrument for reducing auto dependency in the study area.
this ia past paper of cambridge A level stage i took from download side and manage in illustrator... more this ia past paper of cambridge A level stage i took from download side and manage in illustrator and save as pdf file for make a past paper book hands out of several years Ex . as a 5 years and give for students for learn your study.
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Papers by Shakil Khan