Pub Date : 1900-01-01DOI: 10.32508/stdj.v26i1.4024
{"title":"Relationship between electrical and optical characterization of Ga-doped ZnO thin films deposited by magnetron sputtering","authors":"","doi":"10.32508/stdj.v26i1.4024","DOIUrl":"https://doi.org/10.32508/stdj.v26i1.4024","url":null,"abstract":"","PeriodicalId":285953,"journal":{"name":"Science and Technology Development Journal","volume":"11 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":"121680217","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}
Pub Date : 1900-01-01DOI: 10.32508/stdj.v25i4.3949
{"title":"Enhancement of the Seebeck Coefficient of C doped SnSe: First Principles Study","authors":"","doi":"10.32508/stdj.v25i4.3949","DOIUrl":"https://doi.org/10.32508/stdj.v25i4.3949","url":null,"abstract":"","PeriodicalId":285953,"journal":{"name":"Science and Technology Development Journal","volume":"14 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":"116515775","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}
Pub Date : 1900-01-01DOI: 10.32508/stdj.v25i3.3992
Van‐Duong Dao, Nguyen Duc Chien, D. Phuong, P. T. Huy, Phan Bach Thang
The 12th National Conference on Solid State Physics and Materials Science (SPMS2021) gathered various notable scientists (7 plenary speakers and 34 invited speakers). Attending the conference and actively participating in the debate were more than 450 scholars with an interest in the topic. Four hundred reports were divided into five specialized sessions, including (A) physics and magnetic materials, (B) semiconductor and dielectric physics, (C) semiconductor and dielectric materials and devices, (D) biomedical materials and materials for agriculture, energy, and the environment, and (E) composite materials - metals, ceramics, and Vietnam-Korea sessions on applied physics. In addition, the Organizing Committee received numerous full-text reports that had been submitted to the Journal of Science and Technology (Vietnam Academy of Science and Technology) following a rigorous review procedure. SPMS2021 co-organized by the Vietnam Physical Society, the Vietnam Materials Research Society (V-MRS), the Institute of Physics, the Institute of Materials Science (Vietnam Academy of Science and Technology), Hanoi University of Science and Technology, Vietnam National University (VNU), Phenikaa University, and Can Tho University was held on 13 – 15 August 2022 in Can Tho City after nearly 9 months of postponement due to the COVID-19 pandemic. The conference has attracted 7 plenary speakers, 34 invited speakers, and over 450 scientists (Figure 1, Table 1, and Table 2) 1. It is not only a sizable and esteemed scientific conference that draws the interest of the Vietnamese scientific community, but it is also a venue for getting together, exchanging ideas, and disseminating the most recent advancements in the SPMS sector. Since 1995, it has been conducted continuously every two years. Many scientists are generally interested in the domains of solid-state physics and materials science, which have a wide range of activities and exceptional accomplishments in both basics and applications in Vietnam.
{"title":"Enthusiastic discussions on solid-state physics and materials science at SPMS2021","authors":"Van‐Duong Dao, Nguyen Duc Chien, D. Phuong, P. T. Huy, Phan Bach Thang","doi":"10.32508/stdj.v25i3.3992","DOIUrl":"https://doi.org/10.32508/stdj.v25i3.3992","url":null,"abstract":"The 12th National Conference on Solid State Physics and Materials Science (SPMS2021) gathered various notable scientists (7 plenary speakers and 34 invited speakers). Attending the conference and actively participating in the debate were more than 450 scholars with an interest in the topic. Four hundred reports were divided into five specialized sessions, including (A) physics and magnetic materials, (B) semiconductor and dielectric physics, (C) semiconductor and dielectric materials and devices, (D) biomedical materials and materials for agriculture, energy, and the environment, and (E) composite materials - metals, ceramics, and Vietnam-Korea sessions on applied physics. In addition, the Organizing Committee received numerous full-text reports that had been submitted to the Journal of Science and Technology (Vietnam Academy of Science and Technology) following a rigorous review procedure. SPMS2021 co-organized by the Vietnam Physical Society, the Vietnam Materials Research Society (V-MRS), the Institute of Physics, the Institute of Materials Science (Vietnam Academy of Science and Technology), Hanoi University of Science and Technology, Vietnam National University (VNU), Phenikaa University, and Can Tho University was held on 13 – 15 August 2022 in Can Tho City after nearly 9 months of postponement due to the COVID-19 pandemic. The conference has attracted 7 plenary speakers, 34 invited speakers, and over 450 scientists (Figure 1, Table 1, and Table 2) 1. It is not only a sizable and esteemed scientific conference that draws the interest of the Vietnamese scientific community, but it is also a venue for getting together, exchanging ideas, and disseminating the most recent advancements in the SPMS sector. Since 1995, it has been conducted continuously every two years. Many scientists are generally interested in the domains of solid-state physics and materials science, which have a wide range of activities and exceptional accomplishments in both basics and applications in Vietnam.","PeriodicalId":285953,"journal":{"name":"Science and Technology Development Journal","volume":"92 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":"123044648","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}
Pub Date : 1900-01-01DOI: 10.32508/stdj.v25i4.3978
{"title":"Synthesis and in vitro α-glucosidase inhibitory activity of some of the derivatives of 3-methylrhodanine","authors":"","doi":"10.32508/stdj.v25i4.3978","DOIUrl":"https://doi.org/10.32508/stdj.v25i4.3978","url":null,"abstract":"","PeriodicalId":285953,"journal":{"name":"Science and Technology Development Journal","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":"126435020","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}
Pub Date : 1900-01-01DOI: 10.32508/stdj.v25i4.4004
{"title":"Solvent free, microwave-assisted synthesis and cytotoxicity evaluation of benzoxazole derivatives","authors":"","doi":"10.32508/stdj.v25i4.4004","DOIUrl":"https://doi.org/10.32508/stdj.v25i4.4004","url":null,"abstract":"","PeriodicalId":285953,"journal":{"name":"Science and Technology Development Journal","volume":"104 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":"116432923","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}
Pub Date : 1900-01-01DOI: 10.32508/stdj.v25i4.3971
{"title":"Determine three-layer atmospheric electric fields using MGMR3D","authors":"","doi":"10.32508/stdj.v25i4.3971","DOIUrl":"https://doi.org/10.32508/stdj.v25i4.3971","url":null,"abstract":"","PeriodicalId":285953,"journal":{"name":"Science and Technology Development Journal","volume":"8 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":"116781411","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}
Pub Date : 1900-01-01DOI: 10.32508/stdj.v25i4.3989
{"title":"Optimization of the optical properties of circular lattice As2Se3 photonic crystal fibers over a wide range of wavelengths","authors":"","doi":"10.32508/stdj.v25i4.3989","DOIUrl":"https://doi.org/10.32508/stdj.v25i4.3989","url":null,"abstract":"","PeriodicalId":285953,"journal":{"name":"Science and Technology Development Journal","volume":"27 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":"126142998","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}
Pub Date : 1900-01-01DOI: 10.32508/stdj.v26i1.4025
D. V. Le
On the basis of a set of Fluid Mechanics Multiple-Choice Tests (FMMCT) in the form of MS Word files, the author used the programming languages and open source programs Android Studio, PHP, Java Script, HTML, and Hot Potatoes 6 to proceed developing an FMMCT program FluidMCT, operating on smartphones with the Android operating system, to create favorable conditions for learning fluid mechanics better. The program consists of two parts: (1) The program to be installed on the smartphone created through the Android Studio Bumblebee Software │2021.1.1 Patch 2 [1]; (2) The programs and databases are installed on the server. Hot Potatoes 6 software helps to create FMMCT lessons with results as HTML files containing JavaScript language to perform operations and scoring. Based on this sample test, 160 FMMCT lessons are conducted on the basis of separating the test content, the selected evaluation content and the JavaScript operating files in the form of *.js to optimize the saving process. storage and programming for big data. On the server, programs written in PHP, HTML, JavaScript and MySQL databases help to manage the data system containing FMMCT, the table user in the MySQL database along with PHP programs support account security management through the login process. These two program systems (1) and (2) are linked together. Using smartphones, users can freely run 20 FMMCT lessons; however, to continue running the remaining 140 lessons, students must provide resource system logins. In addition, a system program is created and installed on the server, and another result is the FluidMCT.apk file, allowing it to be installed on Android smartphones for use. Through the results of this program development, a multiple-choice test program of any other subject can be built conveniently and quickly.
{"title":"Building a fluid mechanics multiple-choice test program for smartphones with android operating system","authors":"D. V. Le","doi":"10.32508/stdj.v26i1.4025","DOIUrl":"https://doi.org/10.32508/stdj.v26i1.4025","url":null,"abstract":"On the basis of a set of Fluid Mechanics Multiple-Choice Tests (FMMCT) in the form of MS Word files, the author used the programming languages and open source programs Android Studio, PHP, Java Script, HTML, and Hot Potatoes 6 to proceed developing an FMMCT program FluidMCT, operating on smartphones with the Android operating system, to create favorable conditions for learning fluid mechanics better. The program consists of two parts: (1) The program to be installed on the smartphone created through the Android Studio Bumblebee Software │2021.1.1 Patch 2 [1]; (2) The programs and databases are installed on the server. Hot Potatoes 6 software helps to create FMMCT lessons with results as HTML files containing JavaScript language to perform operations and scoring. Based on this sample test, 160 FMMCT lessons are conducted on the basis of separating the test content, the selected evaluation content and the JavaScript operating files in the form of *.js to optimize the saving process. storage and programming for big data. On the server, programs written in PHP, HTML, JavaScript and MySQL databases help to manage the data system containing FMMCT, the table user in the MySQL database along with PHP programs support account security management through the login process. These two program systems (1) and (2) are linked together. Using smartphones, users can freely run 20 FMMCT lessons; however, to continue running the remaining 140 lessons, students must provide resource system logins. In addition, a system program is created and installed on the server, and another result is the FluidMCT.apk file, allowing it to be installed on Android smartphones for use. Through the results of this program development, a multiple-choice test program of any other subject can be built conveniently and quickly.","PeriodicalId":285953,"journal":{"name":"Science and Technology Development Journal","volume":"19 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":"131018705","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}
Pub Date : 1900-01-01DOI: 10.32508/stdj.v24i4.2572
Cuong Hoang Phan, Hoang Quoc Pham
This paper researches a design process of a parallel plate-fins heatsink subjected to an impinging airflow in a broadcast vehicle system. First, it is demonstrated theoretically that the thermal conductance between the plate and the air stream can be maximized by optimizing geometric parameters. Next, the research studies the heat transfer theory across parallel plate-fins of the heatsink to optimize the geometric parameters. Those parameters are used to design a three-dimensional heatsink. In the next step, the design model simulates temperature under working conditions by using computational fluid dynamics (CFD). The simulation results show that the maximum temperature is smaller than the maximum permitted temperature of electronic equipment given by the manufacturer. Then, the design model is trial manufactured for testing before moving to mass production.
{"title":"Optimization of geometric design parameters for a parallel plate fins heatsink of broadcast vehicle system","authors":"Cuong Hoang Phan, Hoang Quoc Pham","doi":"10.32508/stdj.v24i4.2572","DOIUrl":"https://doi.org/10.32508/stdj.v24i4.2572","url":null,"abstract":"This paper researches a design process of a parallel plate-fins heatsink subjected to an impinging airflow in a broadcast vehicle system. First, it is demonstrated theoretically that the thermal conductance between the plate and the air stream can be maximized by optimizing geometric parameters. Next, the research studies the heat transfer theory across parallel plate-fins of the heatsink to optimize the geometric parameters. Those parameters are used to design a three-dimensional heatsink. In the next step, the design model simulates temperature under working conditions by using computational fluid dynamics (CFD). The simulation results show that the maximum temperature is smaller than the maximum permitted temperature of electronic equipment given by the manufacturer. Then, the design model is trial manufactured for testing before moving to mass production.","PeriodicalId":285953,"journal":{"name":"Science and Technology Development Journal","volume":"40 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":"124008832","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}
Pub Date : 1900-01-01DOI: 10.32508/stdj.v25i3.3970
T. T. Bui, Dat Hung Tran, H. Phan, D. Dao, Quoc-Thiet Nguyen, S. Cu, H. Nguyen
{"title":"Synthesis and Optical Properties of Conjugated Copolymers based on Phenoxazine and Fluorene for an Activated Layer in Polymeric Solar Cell Applications","authors":"T. T. Bui, Dat Hung Tran, H. Phan, D. Dao, Quoc-Thiet Nguyen, S. Cu, H. Nguyen","doi":"10.32508/stdj.v25i3.3970","DOIUrl":"https://doi.org/10.32508/stdj.v25i3.3970","url":null,"abstract":"","PeriodicalId":285953,"journal":{"name":"Science and Technology Development Journal","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":"130470503","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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