Saddam Hossain - Academia.edu (original) (raw)
Papers by Saddam Hossain
Sustainability
The COVID-19 pandemic has created massive issues around the world. To ensure that education conti... more The COVID-19 pandemic has created massive issues around the world. To ensure that education continued during the crisis, educational institutions had to implement a variety of initiatives. This paper aims to examine the growth and country collaboration on social media (SM) research during the COVID-19 pandemic through a systematic review and investigate the impact of this body of work by citation and network analyses. The number of articles, keywords, and clusters of worldwide academic scholars working in the area was mapped using R studio and the VOS viewer tool. According to the study results, 519 articles have been retrieved from the Web of Science in the field of domain. The USA has produced the most publications, and Chen IH and Lin CY were the most prolific authors. Furthermore, the most studies on SM use in higher education were released in the International Journal of Environmental Research and Public Health. This research will help academic researchers, organizations, and p...
This paper deals with the scientometric study on the publication on "Waste Management" ... more This paper deals with the scientometric study on the publication on "Waste Management" in India. The aim of the study is to measure the research output in Waste Management. The study is based on the data collected from Web of Science for a period of 2009-2018. The number of publications collected for this study was 1549 and various software tools such as Histcite, VOSviewer, and BibExcel were used to analyze the data. Analysis part focuses on the parameters like citation impact at local and global level, outstanding authors and their total output, ranking of contributing institutions and countries. The main objective of the study is to determine year wise distribution, the documents, growth of literature, author productivity, country wise productivity, and institution wise along with the review of literature related to area of scientometric research.
In this study, few studies have attempted to make a comprehensive and quantitative review on this... more In this study, few studies have attempted to make a comprehensive and quantitative review on this topic. This study conducted a scientometric review on the Earth Science research from 2015 to 2019 using HistCite. Totally 4200 articles from the Web of Science core collection database were selected as the research samples. Our result show that The highest publication output in the year of 2019 with 1026 records (24.43%) and lowest publications founded in the year of 2016 with 685 (16.31%) publications. The most vital development in Earth Science research occurred in the USA, China, England, Canada and Germany. We are Suggest special strengthening in building international partnerships since cooperation occurs in most countries. International cooperation can improve research performance and in the end it leads to better exploitation.
Enzyme and Microbial Technology, 2021
Pseudomonas sp. KM1 produces an amino acid ester hydrolase (KM1AEH) that catalyzes peptide bond f... more Pseudomonas sp. KM1 produces an amino acid ester hydrolase (KM1AEH) that catalyzes peptide bond formation by acting on carboxylic ester bonds. The KM1AEH gene was cloned from genomic DNA and expressed in Escherichia coli. The recombinant enzyme (rKM1AEH) was purified, and gel filtration showed that it is a 68 kDa monomeric protein. rKM1AEH can synthesize the vasoactive dipeptide tryptophan-histidine from tryptophan methyl ester and histidine as acyl donor and acceptor, respectively. The enzyme showed maximum activity at pH 9.5 and 45 °C and was specifically inhibited by silver (Ag+). Mutation of the catalytic Ser459 residue in the active site of rKM1AEH with Ala, Cys, or Thr eliminated all catalytic activity. The enzyme is a novel ester hydrolase that belongs to the peptidase family S9 based on the phylogenetic analysis.
As a subscriber becomes more aware of the mobile phone technology, he/she will seek for an approp... more As a subscriber becomes more aware of the mobile phone technology, he/she will seek for an appropriate package all together, including all the advanced features of a cellular phone can have. Hence, the search for new technology is always the main intention of the prime cell phone giants to out innovate their competitors. In addition, the main purpose of the fifth generation wireless networks (5G Wireless networks) is planned to design the best wireless world that is free from limitations and hindrance of the previous generations. 5G technologies will change the way most high bandwidth users access their Mobile Radio Communication (MRC). So, this paper represents, great evolution of 1G (First Generation) to 4G yield 5G, introduction to 5G technologies, why there is a need for 5G, advantages of 5G networks technology, exceptional applications, Quality of Service (QoS), 5G network architecture-The MasterCore as well as hardware and software for the 5G MasterCore technology.
Journal of the Iranian Chemical Society, 2021
Adsorption is one of the best techniques to mitigate industrial dye pollution. In this study, sur... more Adsorption is one of the best techniques to mitigate industrial dye pollution. In this study, surface of the Mg–Al layered double hydroxide (LDH) was modified with graphene oxide (GO) to improve its adsorption efficacy of Eriochrome Black T (EBT) dye molecules. A higher correlation coefficient value of the Langmuir adsorption model indicated monolayer adsorption of EBT at the active sites of Mg–Al LDH. The optimum adsorption potential was obtained around 0.4 and 1.4 mmol of EBT per g of the LDH and the modified LDH, respectively, and both adsorbents followed pseudo-second-order kinetics. Molecular dynamics study revealed that both GO and LDH contribute to adsorb EBT. Hydrogen bonds, such as C-H…O, O–H…N, O–H…O = S, O–H…N, and N = O…H–O-Al are the major contributing forces behind the adsorption. Besides, π…alkyl, Mg…O = S, π…cation, π…anion, π…donor, π…sigma, and π…lone pair of interactions are the additional contributing forces behind the enhancement of the efficacy of the modified composite.
Materials Chemistry and Physics, 2020
Geological Society of America Abstracts with Programs, 2020
International Journal of Scientific & Engineering Research, 2020
This paper tries to see the association among reserve, aggregate consumption expenditure, and eco... more This paper tries to see the association among reserve, aggregate consumption expenditure, and economic growth by employing the autoregressive distributed lag (ARDL) model. Both the explanatory variables such as consumption and reserve are statistically significant. The consumption expenditure is strongly affecting the economic growth both in the short and long-term. Performing the ADF and PP test the variables are integrated order of one I(1). The bound test confirmed that the long-term association exists between the variables. There ¬is a unidirectional association found among the variables.
American Journal of Computational Mathematics, 2020
International Journal of Economic Behavior and Organization, 2020
Italian Journal of Food Safety, 2019
Poultry is now considered as a major fast-growing source of meat in the world. The consumers dema... more Poultry is now considered as a major fast-growing source of meat in the world. The consumers demand safe and hygienic products without contamination with pathogenic microorganisms when the production and consumption of poultry meat is gradually increasing. The present study was conducted to assess the bacterial contamination of dressed chicken collected from different supershops in Dhaka, Bangladesh. The chicken samples from S1, S2, M1, M2 and A supershops were analyzed to determine the enteropathogenic bacteria in poultry meat. Three genera of bacteria were isolated from all of the chicken meat samples. These enteropathogens from various organs of dressing chickens were also enumerated. The isolates were presumptively identified as E. coli, Salmonella spp., and Shigella spp. by conventional culture method. The three enteropathogens were subjected to PCR assay for their confirmation as virulent enteropathogens. Only E. coli isolates were confirmed as pathogenic E. coli (Enterotoxige...
International Journal of Advanced Computer Science and Applications, 2018
Asian Journal of Research in Chemistry, 2017
Thiosemicarbazones are Schiff base ligands which have achieved much attention by the scientist ov... more Thiosemicarbazones are Schiff base ligands which have achieved much attention by the scientist over the decades as potential drug agent. Isatin is an endogenous compound isolated in 1988 and reported to possess a wide range of structural and biological activities involving the central nervous system. The versatility and flexibility of Schiff base compounds having, acyl, aroyl and heteroacroyl ligands have additional donor sites >C=O, >C=N-, >C=S etc. have made the Schiff bases to act as good complexing agents that form a variety of complexes with various transition and inner transition metals which also emphasized the attention of many researchers. Azomethine linkage(-CH=N-) of Schiff base play an significant role in medical field with so many pharmacological applications such as antimicrobial, antiviral, anti-tubercularculosis, anti-HIV, anti-diuretic and anticancer activity. The potency of these pharmaceutically useful drugs in treatment of microbial infections and other activities inspired the scientist for the development of some more potent and significant compounds and metal complexes over the years. Schiff base ligands are considered privileged ligands because they are easily prepared by a simple condensation reaction of an aldehyde and primary amines. In this review, the synthesis, biological activities along with application of Schiff base derived from isatin and thiosemicarbazides and their metal complexes are summarized.
Applied Mathematics, 2017
Sustainability
The COVID-19 pandemic has created massive issues around the world. To ensure that education conti... more The COVID-19 pandemic has created massive issues around the world. To ensure that education continued during the crisis, educational institutions had to implement a variety of initiatives. This paper aims to examine the growth and country collaboration on social media (SM) research during the COVID-19 pandemic through a systematic review and investigate the impact of this body of work by citation and network analyses. The number of articles, keywords, and clusters of worldwide academic scholars working in the area was mapped using R studio and the VOS viewer tool. According to the study results, 519 articles have been retrieved from the Web of Science in the field of domain. The USA has produced the most publications, and Chen IH and Lin CY were the most prolific authors. Furthermore, the most studies on SM use in higher education were released in the International Journal of Environmental Research and Public Health. This research will help academic researchers, organizations, and p...
This paper deals with the scientometric study on the publication on "Waste Management" ... more This paper deals with the scientometric study on the publication on "Waste Management" in India. The aim of the study is to measure the research output in Waste Management. The study is based on the data collected from Web of Science for a period of 2009-2018. The number of publications collected for this study was 1549 and various software tools such as Histcite, VOSviewer, and BibExcel were used to analyze the data. Analysis part focuses on the parameters like citation impact at local and global level, outstanding authors and their total output, ranking of contributing institutions and countries. The main objective of the study is to determine year wise distribution, the documents, growth of literature, author productivity, country wise productivity, and institution wise along with the review of literature related to area of scientometric research.
In this study, few studies have attempted to make a comprehensive and quantitative review on this... more In this study, few studies have attempted to make a comprehensive and quantitative review on this topic. This study conducted a scientometric review on the Earth Science research from 2015 to 2019 using HistCite. Totally 4200 articles from the Web of Science core collection database were selected as the research samples. Our result show that The highest publication output in the year of 2019 with 1026 records (24.43%) and lowest publications founded in the year of 2016 with 685 (16.31%) publications. The most vital development in Earth Science research occurred in the USA, China, England, Canada and Germany. We are Suggest special strengthening in building international partnerships since cooperation occurs in most countries. International cooperation can improve research performance and in the end it leads to better exploitation.
Enzyme and Microbial Technology, 2021
Pseudomonas sp. KM1 produces an amino acid ester hydrolase (KM1AEH) that catalyzes peptide bond f... more Pseudomonas sp. KM1 produces an amino acid ester hydrolase (KM1AEH) that catalyzes peptide bond formation by acting on carboxylic ester bonds. The KM1AEH gene was cloned from genomic DNA and expressed in Escherichia coli. The recombinant enzyme (rKM1AEH) was purified, and gel filtration showed that it is a 68 kDa monomeric protein. rKM1AEH can synthesize the vasoactive dipeptide tryptophan-histidine from tryptophan methyl ester and histidine as acyl donor and acceptor, respectively. The enzyme showed maximum activity at pH 9.5 and 45 °C and was specifically inhibited by silver (Ag+). Mutation of the catalytic Ser459 residue in the active site of rKM1AEH with Ala, Cys, or Thr eliminated all catalytic activity. The enzyme is a novel ester hydrolase that belongs to the peptidase family S9 based on the phylogenetic analysis.
As a subscriber becomes more aware of the mobile phone technology, he/she will seek for an approp... more As a subscriber becomes more aware of the mobile phone technology, he/she will seek for an appropriate package all together, including all the advanced features of a cellular phone can have. Hence, the search for new technology is always the main intention of the prime cell phone giants to out innovate their competitors. In addition, the main purpose of the fifth generation wireless networks (5G Wireless networks) is planned to design the best wireless world that is free from limitations and hindrance of the previous generations. 5G technologies will change the way most high bandwidth users access their Mobile Radio Communication (MRC). So, this paper represents, great evolution of 1G (First Generation) to 4G yield 5G, introduction to 5G technologies, why there is a need for 5G, advantages of 5G networks technology, exceptional applications, Quality of Service (QoS), 5G network architecture-The MasterCore as well as hardware and software for the 5G MasterCore technology.
Journal of the Iranian Chemical Society, 2021
Adsorption is one of the best techniques to mitigate industrial dye pollution. In this study, sur... more Adsorption is one of the best techniques to mitigate industrial dye pollution. In this study, surface of the Mg–Al layered double hydroxide (LDH) was modified with graphene oxide (GO) to improve its adsorption efficacy of Eriochrome Black T (EBT) dye molecules. A higher correlation coefficient value of the Langmuir adsorption model indicated monolayer adsorption of EBT at the active sites of Mg–Al LDH. The optimum adsorption potential was obtained around 0.4 and 1.4 mmol of EBT per g of the LDH and the modified LDH, respectively, and both adsorbents followed pseudo-second-order kinetics. Molecular dynamics study revealed that both GO and LDH contribute to adsorb EBT. Hydrogen bonds, such as C-H…O, O–H…N, O–H…O = S, O–H…N, and N = O…H–O-Al are the major contributing forces behind the adsorption. Besides, π…alkyl, Mg…O = S, π…cation, π…anion, π…donor, π…sigma, and π…lone pair of interactions are the additional contributing forces behind the enhancement of the efficacy of the modified composite.
Materials Chemistry and Physics, 2020
Geological Society of America Abstracts with Programs, 2020
International Journal of Scientific & Engineering Research, 2020
This paper tries to see the association among reserve, aggregate consumption expenditure, and eco... more This paper tries to see the association among reserve, aggregate consumption expenditure, and economic growth by employing the autoregressive distributed lag (ARDL) model. Both the explanatory variables such as consumption and reserve are statistically significant. The consumption expenditure is strongly affecting the economic growth both in the short and long-term. Performing the ADF and PP test the variables are integrated order of one I(1). The bound test confirmed that the long-term association exists between the variables. There ¬is a unidirectional association found among the variables.
American Journal of Computational Mathematics, 2020
International Journal of Economic Behavior and Organization, 2020
Italian Journal of Food Safety, 2019
Poultry is now considered as a major fast-growing source of meat in the world. The consumers dema... more Poultry is now considered as a major fast-growing source of meat in the world. The consumers demand safe and hygienic products without contamination with pathogenic microorganisms when the production and consumption of poultry meat is gradually increasing. The present study was conducted to assess the bacterial contamination of dressed chicken collected from different supershops in Dhaka, Bangladesh. The chicken samples from S1, S2, M1, M2 and A supershops were analyzed to determine the enteropathogenic bacteria in poultry meat. Three genera of bacteria were isolated from all of the chicken meat samples. These enteropathogens from various organs of dressing chickens were also enumerated. The isolates were presumptively identified as E. coli, Salmonella spp., and Shigella spp. by conventional culture method. The three enteropathogens were subjected to PCR assay for their confirmation as virulent enteropathogens. Only E. coli isolates were confirmed as pathogenic E. coli (Enterotoxige...
International Journal of Advanced Computer Science and Applications, 2018
Asian Journal of Research in Chemistry, 2017
Thiosemicarbazones are Schiff base ligands which have achieved much attention by the scientist ov... more Thiosemicarbazones are Schiff base ligands which have achieved much attention by the scientist over the decades as potential drug agent. Isatin is an endogenous compound isolated in 1988 and reported to possess a wide range of structural and biological activities involving the central nervous system. The versatility and flexibility of Schiff base compounds having, acyl, aroyl and heteroacroyl ligands have additional donor sites >C=O, >C=N-, >C=S etc. have made the Schiff bases to act as good complexing agents that form a variety of complexes with various transition and inner transition metals which also emphasized the attention of many researchers. Azomethine linkage(-CH=N-) of Schiff base play an significant role in medical field with so many pharmacological applications such as antimicrobial, antiviral, anti-tubercularculosis, anti-HIV, anti-diuretic and anticancer activity. The potency of these pharmaceutically useful drugs in treatment of microbial infections and other activities inspired the scientist for the development of some more potent and significant compounds and metal complexes over the years. Schiff base ligands are considered privileged ligands because they are easily prepared by a simple condensation reaction of an aldehyde and primary amines. In this review, the synthesis, biological activities along with application of Schiff base derived from isatin and thiosemicarbazides and their metal complexes are summarized.
Applied Mathematics, 2017