MATTER: International Journal of Science and Technology最新文献_第2页

INACTIVATION EFFECTS OF NEGATIVE PRESSURES BY A METAL BERTHELOT TECHNIQUE ON BACTERIA SOLUTIONS 负压法对细菌溶液的失活效果

MATTER: International Journal of Science and Technology Pub Date : 2022-11-23 DOI: 10.20319/mijst.2022.83.1226

K. Hiro, Momoko Imanishi, H. Fukuoka, A. Itsuki, H. Kotake

引用次数: 0

QUENCHING BEHAVIOR OF THE SOLUTION FOR THE PROBLEMS WITH SEQUENTIAL CONCENTRATED SOURCES 序列集中源问题溶液的淬灭行为

MATTER: International Journal of Science and Technology Pub Date : 2022-11-15 DOI: 10.20319/mijst.2022.83.0111

H. T. Liu

引用次数: 0

THE EFFECTS OF SYSTEM PARAMETERS ON THE INCEPTION OF FLASHING USING RELAP5 用relap5研究了系统参数对闪现开始的影响

MATTER: International Journal of Science and Technology Pub Date : 2022-08-05 DOI: 10.20319/mijst.2022.82.5274

Bello Mary Olubunmi, Peng Minjun, Xia Genglei

{"title":"THE EFFECTS OF SYSTEM PARAMETERS ON THE INCEPTION OF FLASHING USING RELAP5","authors":"Bello Mary Olubunmi, Peng Minjun, Xia Genglei","doi":"10.20319/mijst.2022.82.5274","DOIUrl":"https://doi.org/10.20319/mijst.2022.82.5274","url":null,"abstract":"Natural circulation systems (NCS) are prone to instabilities, they are more unstable compared to forced circulation systems as a result of the low driving head and nonlinearity of the system. Flashing instability is prominent in these systems at low pressure due to the presence of a long nonheated riser to enhance the driving force. RELAP5 code has been identified as one of the Best Estimate (BE) codes used in the analysis of the systems. The studies by different authors showed that the effects of system parameters on instability generally have gained the attention of researchers in recent years. However, these studies have not discussed how these parameters prevent or enhance the commencement of flashing instability. This we sought to achieve in this work, by zeroing in on the inception of flashing instability, by comparing what happened at different heat fluxes. The objective of this work is to investigate the effects of system parameters on the inception of flashing instability in a natural circulation system using the RELAP5 code. With the increase in inlet subcooling and height of the riser, flashing moved to the outlet of the riser, stabilizing the system. However, an opposite effect was observed with an increase in the inlet resistance.","PeriodicalId":411113,"journal":{"name":"MATTER: International Journal of Science and Technology","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126319638","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}

引用次数: 0

PROPERTIES OF OXYGEN AND THEIR RELATIONSHIP TO EINSTEIN'S SPECIAL RELATIVITY THEORY 氧的性质及其与爱因斯坦狭义相对论的关系

MATTER: International Journal of Science and Technology Pub Date : 2022-07-21 DOI: 10.20319/mijst.2022.82.3451

K. O. Low, Kee Tong Khoo, Ying Yao Koon, J. Chua

{"title":"PROPERTIES OF OXYGEN AND THEIR RELATIONSHIP TO EINSTEIN'S SPECIAL RELATIVITY THEORY","authors":"K. O. Low, Kee Tong Khoo, Ying Yao Koon, J. Chua","doi":"10.20319/mijst.2022.82.3451","DOIUrl":"https://doi.org/10.20319/mijst.2022.82.3451","url":null,"abstract":"Oxygen has been shown able to be released from aqueous water when the water flows through magnetic fields. Such a production process is called magneto synthesis and it is successful when the principle of induced current took place. Oxygen produced from this newly discovered process possessed properties differently when compared to the photosynthesis process. This study can be made when the magneto synthesis process was carried out closed to the saturation point of oxygen dissolution equilibrium in aqueous water. At the saturation point, the exchange of oxygen atoms or molecules between these two processes has happened. This interchange state allowed a unique single steep-drop characteristic to be observed. The single steep-drop characteristic of the magneto synthesis process provides two pieces of evidence on the properties of oxygen; they are heavier by mass and higher by oxidative power. The unique properties as discovered are supported by Einstein’s Special Relativity Theory. In this matter, gamma-ray flashes are thought to produce when the hydrogen-electron pairs are formed. A mechanism where gamma-ray flashes could be produced was proposed and sufficient evidence for gamma-ray flashes to occur was outlined. The gamma-ray flashes are the clue in the inter-permutable between the mass and energy. This is the clue to let the special relativity theory take a place.","PeriodicalId":411113,"journal":{"name":"MATTER: International Journal of Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130129767","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}

引用次数: 0

BOOSTING THE HARVESTING OF NIGERIA’S ABUNDANT RENEWABLE ENERGY POTENTIALS AND LEGAL IMPLICATIONS 促进尼日利亚丰富的可再生能源潜力的收获和法律影响

MATTER: International Journal of Science and Technology Pub Date : 2022-07-19 DOI: 10.20319/mijst.2022.82.1833

T. Chineke, J. Ozuomba, M. C. Anumaka, J.C. Ojiaka, O.C. Akwuegbu

{"title":"BOOSTING THE HARVESTING OF NIGERIA’S ABUNDANT RENEWABLE ENERGY POTENTIALS AND LEGAL IMPLICATIONS","authors":"T. Chineke, J. Ozuomba, M. C. Anumaka, J.C. Ojiaka, O.C. Akwuegbu","doi":"10.20319/mijst.2022.82.1833","DOIUrl":"https://doi.org/10.20319/mijst.2022.82.1833","url":null,"abstract":"Renewable energy has been highlighted not only as a means of satisfying the energy needs of Nigerians but also as a tool for the country's growth, thereby improving the income of the citizens who have more energy to work with, serving as the energy source for domestic and office use, in addition to reducing the carbon footprint from the conventional fossil fuels. From data obtained from the Photovoltaic Geographic Information System (PVGIS), the solar electricity potential at some selected cities in Southern Nigeria that ranges from 4.5 to 6.5 kWh/m2 has been presented as a tool, which when properly harnessed, can be used to mitigate avoidable energy-related “national disasters” such as unemployment and youth-restiveness, thereby accelerating Nigeria’s development. There is the urgent need to revise and effectively implement helpful laws and policies that support the addition of renewable energy sources for electricity generation. Lack of a coherent legal framework with incentives for the utilization of renewable energy is among the key factors causing poor utilization of renewable energy in Nigeria. Governmental and stakeholder collaboration is highly necessary for developing countries to robustly track renewable electricity adoption via laws aimed at boosting its adoption.","PeriodicalId":411113,"journal":{"name":"MATTER: International Journal of Science and Technology","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116533391","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}

引用次数: 0

EVALUATION OF ENVIRONMENTAL SITUATION IN NARTA LAGOON, VLORA, ALBANIA 阿尔巴尼亚维拉纳塔泻湖环境状况评价

MATTER: International Journal of Science and Technology Pub Date : 2022-07-15 DOI: 10.20319/mijst.2022.82.0117

A. Bakaj, H. Kiçaj, M. Ismailaj, Xhuljana Arapaj, Sibora Mehmeti

{"title":"EVALUATION OF ENVIRONMENTAL SITUATION IN NARTA LAGOON, VLORA, ALBANIA","authors":"A. Bakaj, H. Kiçaj, M. Ismailaj, Xhuljana Arapaj, Sibora Mehmeti","doi":"10.20319/mijst.2022.82.0117","DOIUrl":"https://doi.org/10.20319/mijst.2022.82.0117","url":null,"abstract":"Narta Lagoon is one of the biggest Lagoons in Albania. It is situated in the southern part of the Vjosa River delta. Two canals in the northwest and southwest parts of the lagoon connect it to the Adriatic Sea. These artificial canals enable the water exchange process with the sea during tidal flow. Vjose - Narta area is considered a Protected Landscape, so environmental monitoring is important. Setting and design: Water samples were taken monthly, at six evenly distributed sample stations. The study was conducted from January – to December 2018. Materials and methods: The assessment of microbial contamination was performed with the MPN method. Total coliform, fecal coliform, and fecal streptococci were tested as fecal contamination indicators. PH and salinity were the physicochemical parameters analyzed. Conclusions: the cleanest sampling station is the one near contact with the seawater. The most polluted stations are stations 2, 4, and 6. Temperature values range from 5 oC in January to 33 oC in August. Lagoon pollution is caused by an anthropogenic factor as well as a lack of appropriate cleaning strategies.","PeriodicalId":411113,"journal":{"name":"MATTER: International Journal of Science and Technology","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127207631","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}

引用次数: 0

EXPLORING INNOVATIVE SCALE-UP SOLUTIONS FOR LIGHT INTEGRATION IN TEXTILES USING ELECTROLUMINESCENT FIBERS 探索利用电致发光纤维在纺织品中集成光的创新放大解决方案

MATTER: International Journal of Science and Technology Pub Date : 2022-05-12 DOI: 10.20319/mijst.2022.81.89101

N. B. Sedrine, A. Melo, A. Goth, Nelson Durães, Ricardo F. Silva, Pedro G. Silva, Paulo Mendes

引用次数: 0

MICROBLOGGING MARKETING: A PRODUCT OF THE FOURTH INDUSTRIAL REVOLUTION 微博营销:第四次工业革命的产物

MATTER: International Journal of Science and Technology Pub Date : 2022-04-22 DOI: 10.20319/mijst.2022.81.7188

Ajayi Olalekan Ezekiel

{"title":"MICROBLOGGING MARKETING: A PRODUCT OF THE FOURTH INDUSTRIAL REVOLUTION","authors":"Ajayi Olalekan Ezekiel","doi":"10.20319/mijst.2022.81.7188","DOIUrl":"https://doi.org/10.20319/mijst.2022.81.7188","url":null,"abstract":"Microblogging is a new and socialized media form born of the fourth industrial revolution. In every sense, aggressive development has far-reaching effects on humanity. Stakeholders, non-profit groups, and state and non-state actors are all interested in internet marketing. A vast number of social websites, such as Twitter, Tumblr, Plurk, and others, have recently gained popularity among normal internet users. This study sought to illustrate how microblogging has driven the market to expand and established tactics in such a period. The study used an exploratory research approach with a focus on literature in the fields of business administration, entrepreneurship, internet academic journal, blogs, government publications and records, a variety of research reports, and individual research. The study established that users relied on microblogging to share different types of information through frequent and lengthy conversions and microblogging marketing is an aggressive alternative source of business growth. Therefore, Microblogging marketing has contributed to global business and supported marketing strategy. The study suggested that microblogging marketing should be users’ friendly, actively forward users' objective quality evaluation products, and create a harmonious and equitable social media environment. Further research should be conducted to determine how corporate microblogging might benefit workers at work and business world","PeriodicalId":411113,"journal":{"name":"MATTER: International Journal of Science and Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134029836","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}

引用次数: 1

INNOVATION AND CHANGES IN THE DIDACTIC SPACE 教学空间的创新和变化

MATTER: International Journal of Science and Technology Pub Date : 2022-03-15 DOI: 10.20319/mijst.2022.81.3351

F. Martinazzo

{"title":"INNOVATION AND CHANGES IN THE DIDACTIC SPACE","authors":"F. Martinazzo","doi":"10.20319/mijst.2022.81.3351","DOIUrl":"https://doi.org/10.20319/mijst.2022.81.3351","url":null,"abstract":"In Italy, the theme of the school, and more generally of education in the broadest sense, already in turmoil before the epidemic, seems to be exploding today in all its urgency, both because of the instances - above all pedagogical - of transformation brought by the pandemic itself (which from this point of view has acted as a catalyst), and because of the uncertain consequences of a building heritage that now largely needs to be restored, because it is architecturally and technologically inadequate. This has led to the structuring of a literature review that takes into account two main time spans: on the one hand, that of the 1960s-1970s (often called \"the golden age of school\"), investigated through the international architectural journals of that period, where the typology-technology problem emerges strongly; on the other hand, the selection (through Scopus, WoS, etc.) of current or recent studies and pedagogical experiences related to new technologies. The criterion for the choice of case studies is therefore based on their propulsive potential in relation to today's transformation needs, seeking to consider the school as an organism and not merely as a set of functional parts (as much current literature does).","PeriodicalId":411113,"journal":{"name":"MATTER: International Journal of Science and Technology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127243254","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}

引用次数: 1

OPTIMIZATION OF SURFACE ROUGHNESS AND CONE ANGLE IN AWJ MACHINING OF AIRCRAFT MATERIAL USING RSM 用RSM优化飞机材料刃磨加工的表面粗糙度和锥角

MATTER: International Journal of Science and Technology Pub Date : 2022-03-15 DOI: 10.20319/mijst.2022.81.1732

Y. Deshpande, P. S. Barve, T. A. Madankar, S. S. Pund

{"title":"OPTIMIZATION OF SURFACE ROUGHNESS AND CONE ANGLE IN AWJ MACHINING OF AIRCRAFT MATERIAL USING RSM","authors":"Y. Deshpande, P. S. Barve, T. A. Madankar, S. S. Pund","doi":"10.20319/mijst.2022.81.1732","DOIUrl":"https://doi.org/10.20319/mijst.2022.81.1732","url":null,"abstract":"Abrasive water jet machining (AWJM) of aircraft material is a difficult process using conventional machines. Machined parts of Inconel 718, a nickel-based alloy (aircraft material) are widely used in the aerospace industries. However, these alloys are expensive and difficult to machine. The objective of this article is to optimize AWJM process parameters. Response Surface Methodology (RSM) is planned with travel speed, abrasive flow rate, and stand-off distance as inputs. The response models of surface finish and cone angle show the correlation coefficient `R2` of 96.94% and 96.67%, respectively. 3D surface plot with analysis of variance (ANOVA) is presented to distinguish significant AWJM parameters. The work revealed that travel speed is a significant factor for surface finish and cone angle. Multi-response optimization results in the best optimal values of traverse speed; abrasive flow rate and standoff distance are 200 mm/min, 460 g/min, and 4 mm respectively. This research outcome showed more than 90 % of accuracy for both the responses. This article is helpful to the AWJM centers to select optimal machining parameters for achieving the desirability in the machining of Inconel 718. The obtained novel results confirmed that such a technique can be implemented to identify optimal parameters in the machining of different materials.","PeriodicalId":411113,"journal":{"name":"MATTER: International Journal of Science and Technology","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130212951","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}

引用次数: 0