Diyar Abdulmajeed Jamil, S. Younus, Zaid Saad Ismail, Idrees Sadeq Kanabi, Baban Jabbar Othman, Hawta Tareq Faieq, Rozhgar Khorsheed Mahmood, B. Gardi, S. J. Jwmaa
The goal of this study is to look into the factors that influence stock exchange investment in Kurdistan, namely in Erbil. Emerging countries can leverage these marketplaces to develop their economies as well, however some developing countries may be unfamiliar with the process. For firms looking for profitable investment opportunities, the stock exchange is a popular option. Investors typically take their chances in these markets based on researching predicted profits and dangers associated with those investments, as these marketplaces are where monetary transactions are done. Investors typically shun high-revenue investments due to the significant dangers associated with them, opting instead for low-risk, low-revenue ventures. The current research was analyzed using a quantitative manner. Erbil was the location of the research. Only 71 questionnaires were received and completed properly after the researcher distributed 100 surveys. In order to uncover factors influencing stock exchange investment, the researcher employed single regression analysis. The data show that the supply and demand element that influences stock has the highest value, followed by the economy factor, the third component, competition, and finally the politic element, which has the lowest value. According to the findings, supply and demand seems to play an important impact in stock exchange investment in Kurdistan.
{"title":"Investing on the Stock Exchange: determining the essential factors affecting Stock Exchange Investment","authors":"Diyar Abdulmajeed Jamil, S. Younus, Zaid Saad Ismail, Idrees Sadeq Kanabi, Baban Jabbar Othman, Hawta Tareq Faieq, Rozhgar Khorsheed Mahmood, B. Gardi, S. J. Jwmaa","doi":"10.22161/ijcmp.6.3.2","DOIUrl":"https://doi.org/10.22161/ijcmp.6.3.2","url":null,"abstract":"The goal of this study is to look into the factors that influence stock exchange investment in Kurdistan, namely in Erbil. Emerging countries can leverage these marketplaces to develop their economies as well, however some developing countries may be unfamiliar with the process. For firms looking for profitable investment opportunities, the stock exchange is a popular option. Investors typically take their chances in these markets based on researching predicted profits and dangers associated with those investments, as these marketplaces are where monetary transactions are done. Investors typically shun high-revenue investments due to the significant dangers associated with them, opting instead for low-risk, low-revenue ventures. The current research was analyzed using a quantitative manner. Erbil was the location of the research. Only 71 questionnaires were received and completed properly after the researcher distributed 100 surveys. In order to uncover factors influencing stock exchange investment, the researcher employed single regression analysis. The data show that the supply and demand element that influences stock has the highest value, followed by the economy factor, the third component, competition, and finally the politic element, which has the lowest value. According to the findings, supply and demand seems to play an important impact in stock exchange investment in Kurdistan.","PeriodicalId":293651,"journal":{"name":"International Journal of Chemistry, Mathematics and Physics","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129057587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Relatively Complete Description of the Out-coupling Limitation for Planar OLEDs","authors":"G. Mongelli","doi":"10.22161/IJCMP.3.1.2","DOIUrl":"https://doi.org/10.22161/IJCMP.3.1.2","url":null,"abstract":"","PeriodicalId":293651,"journal":{"name":"International Journal of Chemistry, Mathematics and Physics","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124448149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Of concern in this work is the derivation and implementation of the multistep methods through Taylor’s expansion and numerical integration. For the Taylor’s expansion me thod, the series is truncated after some terms to give the needed approximations which allows for the necessary substitutions for the derivatives to be evaluated on the differential equations . For the numerical integration technique, an interpolating polyn omial that is determined by some data points replaces the differential equation function and it is integrated over a specified interval. The methods show that they are only convergent if and only if they are consistent and stable. In our numerical examples, the methods are applied on non-stiff initial value problems of first-order ordinary differential equations, where it is established that the multistep methods show superiority over the single-step methods in terms of robustness, efficiency, stability and accuracy, the only setback being that the multistep methods require more computational effort than the single-step methods. Keywords— linear multi-step method; numerical solution; ordinary differential equation; initial value problem; stability; convergence.
{"title":"Derivation and Application of Multistep Methods to a Class of First-order Ordinary Differential Equations","authors":"U. Akai, U. Abasiekwere, P. Udoh, Jonas Achuobi","doi":"10.22161/IJCMP.3.2.2","DOIUrl":"https://doi.org/10.22161/IJCMP.3.2.2","url":null,"abstract":"Of concern in this work is the derivation and implementation of the multistep methods through Taylor’s expansion and numerical integration. For the Taylor’s expansion me thod, the series is truncated after some terms to give the needed approximations which allows for the necessary substitutions for the derivatives to be evaluated on the differential equations . For the numerical integration technique, an interpolating polyn omial that is determined by some data points replaces the differential equation function and it is integrated over a specified interval. The methods show that they are only convergent if and only if they are consistent and stable. In our numerical examples, the methods are applied on non-stiff initial value problems of first-order ordinary differential equations, where it is established that the multistep methods show superiority over the single-step methods in terms of robustness, efficiency, stability and accuracy, the only setback being that the multistep methods require more computational effort than the single-step methods. Keywords— linear multi-step method; numerical solution; ordinary differential equation; initial value problem; stability; convergence.","PeriodicalId":293651,"journal":{"name":"International Journal of Chemistry, Mathematics and Physics","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133308969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Albedo of Metallic Nanoparticles Computed from FDTD","authors":"G. Mongelli","doi":"10.22161/ijcmp.3.1.6","DOIUrl":"https://doi.org/10.22161/ijcmp.3.1.6","url":null,"abstract":"","PeriodicalId":293651,"journal":{"name":"International Journal of Chemistry, Mathematics and Physics","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133130258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dr. Ashraf Sami Muhammad, Dr. Ali Ramzi Naji, Dr. Ibrahim Mustafa Siddik
{"title":"Wound dehiscence in surgical procedures and its relationship to increased mortality (a cross-sectional study)","authors":"Dr. Ashraf Sami Muhammad, Dr. Ali Ramzi Naji, Dr. Ibrahim Mustafa Siddik","doi":"10.22161/ijmpd.6.6.6","DOIUrl":"https://doi.org/10.22161/ijmpd.6.6.6","url":null,"abstract":"","PeriodicalId":293651,"journal":{"name":"International Journal of Chemistry, Mathematics and Physics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126011295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. A. Salam, K. Ahmed, T. Hossain, Md Shehan Habib, M. Uddin, N. Papri
A growing need of molecular sieves, now a day, in many industries of Bangladesh makes the materials most important and attracted special attention. The review explores each step involved in the whole process of molecular sieves preparation from rice husk (RH). Many refineries and chemical industries are using molecular sieves as adsorbent material and process catalyst very efficiently. Rice husk is one of the potential sources of biomass to get a maximum percent of SiO2 that is required to synthesize molecular sieves. 93.2% of SiO2 can be extracted from rice husk ash (RHA). In the fiscal year of 2016-2017, about 6.86 million tons of rice husk are produced in Bangladesh whereas worldwide production of rice husk is approximately 97.24 million tons. Geographical locations, combustion methods, and temperature are influencing factor mainly to get the content of silica and structure of molecular sieves.) Rice husk ash containing amorphous silica is produced at temperatures lower than 800C (500-800C). The chemical method with washing pretreatment and post heat treatment are considered as the most simple and successful SiO2 extraction methods from RH. Different types of molecular sieves; 13x, 3A, 4A & 5A can successfully be synthesized via the widely used hydrothermal method. Molar ratio of ingredients, reaction temperature, time, acid-base media, ageing etc. are key factors to be considered in designing different molecular sieves. Keywords— Molecular sieves, Biomass, Rice husk, Bio-silica, pyrolysis.
{"title":"Prospect of Molecular Sieves Production using Rice Husk in Bangladesh: A Review","authors":"M. A. Salam, K. Ahmed, T. Hossain, Md Shehan Habib, M. Uddin, N. Papri","doi":"10.22161/ijcmp.3.6.2","DOIUrl":"https://doi.org/10.22161/ijcmp.3.6.2","url":null,"abstract":"A growing need of molecular sieves, now a day, in many industries of Bangladesh makes the materials most important and attracted special attention. The review explores each step involved in the whole process of molecular sieves preparation from rice husk (RH). Many refineries and chemical industries are using molecular sieves as adsorbent material and process catalyst very efficiently. Rice husk is one of the potential sources of biomass to get a maximum percent of SiO2 that is required to synthesize molecular sieves. 93.2% of SiO2 can be extracted from rice husk ash (RHA). In the fiscal year of 2016-2017, about 6.86 million tons of rice husk are produced in Bangladesh whereas worldwide production of rice husk is approximately 97.24 million tons. Geographical locations, combustion methods, and temperature are influencing factor mainly to get the content of silica and structure of molecular sieves.) Rice husk ash containing amorphous silica is produced at temperatures lower than 800C (500-800C). The chemical method with washing pretreatment and post heat treatment are considered as the most simple and successful SiO2 extraction methods from RH. Different types of molecular sieves; 13x, 3A, 4A & 5A can successfully be synthesized via the widely used hydrothermal method. Molar ratio of ingredients, reaction temperature, time, acid-base media, ageing etc. are key factors to be considered in designing different molecular sieves. Keywords— Molecular sieves, Biomass, Rice husk, Bio-silica, pyrolysis.","PeriodicalId":293651,"journal":{"name":"International Journal of Chemistry, Mathematics and Physics","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115506262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This article proposes an algorithm for generation of N-dimensional rotation matrix R, N=m+n, m=2p, n=2q, p,q [2, 4, 8] which rotates given N-dimensional vector X in the direction of coordinate axis x1 Algorithm uses block diagonal matrix, composed by Transpositions matrices. As practical realization article gives Matlab code of functions, which creates Householder and Transpositions matrices and V matrix for given n-dimensional vector X.
本文提出了一种生成N维旋转矩阵R, N=m+ N, m=2p, N= 2q, p,q[2,4,8]的算法，该算法使给定的N维向量X沿坐标轴x1方向旋转。该算法采用块对角矩阵，由转置矩阵组成。作为实际实现，本文给出了函数的Matlab代码，对给定的n维向量X生成Householder矩阵、转置矩阵和V矩阵。
{"title":"Application of the Transpositions matrix for obtaining n-dimensional rotation matrices","authors":"Ognyan Ivanov Zhelezov, Valentina Markova Petrova","doi":"10.22161/ijcmp.6.5.3","DOIUrl":"https://doi.org/10.22161/ijcmp.6.5.3","url":null,"abstract":"This article proposes an algorithm for generation of N-dimensional rotation matrix R, N=m+n, m=2p, n=2q, p,q [2, 4, 8] which rotates given N-dimensional vector X in the direction of coordinate axis x1 Algorithm uses block diagonal matrix, composed by Transpositions matrices. As practical realization article gives Matlab code of functions, which creates Householder and Transpositions matrices and V matrix for given n-dimensional vector X.","PeriodicalId":293651,"journal":{"name":"International Journal of Chemistry, Mathematics and Physics","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117278033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
— This work will investigate the behaviors of Moving distributed masses of orthotropic rectangular plates resting on bi-parametric elastic foundation with clamped-clamped end conditions. The governing equation is a fourth order partial differential equation with variable and singular co-efficients. The solutions to the problem will be obtained by transforming the partial differential equation for the problem to a set of coupled second order ordinary differential equations using the technique of Shadnam et al[18] which shall then be simplified using modified asymptotic method of Struble. The closed form solution will be analyzed, resonance condition shall be obtained and the result will be presented in plotted curves for both cases of moving distributed mass and moving distributed force.
{"title":"Dynamic behavior of Moving distributed Masses of Orthotropic Rectangular Plate with Clamped-Clamped Boundary conditions Resting on a Constant Elastic Bi-Parametric Foundation","authors":"A. Adeoye, T. Awodola","doi":"10.22161/ijcmp.4.4.2","DOIUrl":"https://doi.org/10.22161/ijcmp.4.4.2","url":null,"abstract":"— This work will investigate the behaviors of Moving distributed masses of orthotropic rectangular plates resting on bi-parametric elastic foundation with clamped-clamped end conditions. The governing equation is a fourth order partial differential equation with variable and singular co-efficients. The solutions to the problem will be obtained by transforming the partial differential equation for the problem to a set of coupled second order ordinary differential equations using the technique of Shadnam et al[18] which shall then be simplified using modified asymptotic method of Struble. The closed form solution will be analyzed, resonance condition shall be obtained and the result will be presented in plotted curves for both cases of moving distributed mass and moving distributed force.","PeriodicalId":293651,"journal":{"name":"International Journal of Chemistry, Mathematics and Physics","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128234752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Under simulated physiological conditions (pH=7.40), the interaction between Mobic and lysozyme was studied by synchronous fluorescence spectroscopy, ultraviolet spectroscopy, circular dichroism spectroscopy and molecular docking simulation technique.The results of spectroscopy showed that the fluorescence of lysozyme was statically quenched by Mobic, the number of binding sites was about 1, and the conformation of lysozyme was changed.The thermodynamic parameters obtained from the van't Hoff equation show that the Gibbs free energy ΔG<0 showed that the reaction between them was spontaneous, and ΔH<0, ΔS>0, indicating that the hydrophobic force plays an important role in the formation of Mobic-lysozyme complex.The results of molecular docking showed that the binding site of Mobic was close to the active site composed of Asp48 and Glu35 residues, indicating that Mobic could change the microenvironment of amino acid residues at the catalytic active center of lysozyme.The results of docking further showed that there was a hydrogen bond between Moby and lysozyme, so the interaction between Mobic and lysozyme was driven by hydrophobic interaction and hydrogen bond. Keywords— Mobic; lysozyme; spectroscopy; conformational; molecular docking.
{"title":"Spectroscopic Study on the Interaction between Mobic and Lysozyme","authors":"Bao-Sheng Liu, Xu Cheng, Hongcai Zhang","doi":"10.22161/ijcmp.3.3.3","DOIUrl":"https://doi.org/10.22161/ijcmp.3.3.3","url":null,"abstract":"Under simulated physiological conditions (pH=7.40), the interaction between Mobic and lysozyme was studied by synchronous fluorescence spectroscopy, ultraviolet spectroscopy, circular dichroism spectroscopy and molecular docking simulation technique.The results of spectroscopy showed that the fluorescence of lysozyme was statically quenched by Mobic, the number of binding sites was about 1, and the conformation of lysozyme was changed.The thermodynamic parameters obtained from the van't Hoff equation show that the Gibbs free energy ΔG<0 showed that the reaction between them was spontaneous, and ΔH<0, ΔS>0, indicating that the hydrophobic force plays an important role in the formation of Mobic-lysozyme complex.The results of molecular docking showed that the binding site of Mobic was close to the active site composed of Asp48 and Glu35 residues, indicating that Mobic could change the microenvironment of amino acid residues at the catalytic active center of lysozyme.The results of docking further showed that there was a hydrogen bond between Moby and lysozyme, so the interaction between Mobic and lysozyme was driven by hydrophobic interaction and hydrogen bond. Keywords— Mobic; lysozyme; spectroscopy; conformational; molecular docking.","PeriodicalId":293651,"journal":{"name":"International Journal of Chemistry, Mathematics and Physics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115198112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Within this work the major breakthroughs in the development of OLED technologies are described. There is a strong emphasis placed upon materials discovery. The basic OLED structure is shown and the plasmonic effect is detailed in the context of OLED technologies. Keywords— organic light emitting diode (OLED), outcoupling efficiency, plasmonic materials, singlet/triplet emissions.
{"title":"OLED Device Review and A Summary of the Plasmonic Enhancement thereof","authors":"G. Mongelli","doi":"10.22161/IJCMP.3.1.1","DOIUrl":"https://doi.org/10.22161/IJCMP.3.1.1","url":null,"abstract":"Within this work the major breakthroughs in the development of OLED technologies are described. There is a strong emphasis placed upon materials discovery. The basic OLED structure is shown and the plasmonic effect is detailed in the context of OLED technologies. Keywords— organic light emitting diode (OLED), outcoupling efficiency, plasmonic materials, singlet/triplet emissions.","PeriodicalId":293651,"journal":{"name":"International Journal of Chemistry, Mathematics and Physics","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124122577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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