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Global Journal of Science Frontier Research最新文献

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X-ray CT Analysis of FNS Mortars Mixed with Converter Slag Fine Aggregate 转炉渣细骨料FNS砂浆x射线CT分析
Global Journal of Science Frontier Research Pub Date : 2021-03-30 DOI: 10.34257/GJSFRBVOL21IS1PG1
W. Cho, Ji Seok Kim
{"title":"X-ray CT Analysis of FNS Mortars Mixed with Converter Slag Fine Aggregate","authors":"W. Cho, Ji Seok Kim","doi":"10.34257/GJSFRBVOL21IS1PG1","DOIUrl":"https://doi.org/10.34257/GJSFRBVOL21IS1PG1","url":null,"abstract":"Aggregate is an indispensable component in concrete occupying nearly 65-80% of the total volume, whose effects on concrete performance are rarely studied [1]. Due to their inert and impervious characteristics, the durability of concrete is also influenced by the quality of aggregates. To meet the global demand for concrete in the future, it is becoming a more challenging task to find suitable alternatives to natural aggregate for preparing concrete [2]. Hence, the use of alternative sources for natural aggregates is becoming increasingly important.","PeriodicalId":12547,"journal":{"name":"Global Journal of Science Frontier Research","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78476640","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
Results of Application of Clinpro White Varnish® and Tooth Mousse® during the Enamel Mineral Maturation and its Focal Demineralization Clinpro®白漆和摩丝®在牙釉质矿物成熟和局部脱矿中的应用效果
Global Journal of Science Frontier Research Pub Date : 2021-03-08 DOI: 10.34257/GJSFRCVOL21IS1PG9
M. Markaryan, Izabella F. Vardanyan, M. Manrikyan, Gayane E. Manrikyan
{"title":"Results of Application of Clinpro White Varnish® and Tooth Mousse® during the Enamel Mineral Maturation and its Focal Demineralization","authors":"M. Markaryan, Izabella F. Vardanyan, M. Manrikyan, Gayane E. Manrikyan","doi":"10.34257/GJSFRCVOL21IS1PG9","DOIUrl":"https://doi.org/10.34257/GJSFRCVOL21IS1PG9","url":null,"abstract":"According to some authors, the final maturation of tooth enamel occurs in 1- 2 years after eruption, and then for 2-3 years this process continues in just the fissure area. Full-fledged mineralization during this period is carried out due to the absorption of minerals from saliva, especially in respect to fluorine, calcium and phosphorus ions. As a result of the course of prophylactic treatment with Clin Pro White Varnish® and Tooth Mooth®, an activation of remineralization process was observed ended with the stabilization of the process or complete remineralization in the junior (6-7 years old) and the middle school group children (12-13 years old), which was confirmed by the obtained indices of the \"DiagnodentKaVo\" laser fluorometry test and the colorimetric test. The use of these preparations is a convenient and effective method in these age groups of children during the preventive treatment provision.","PeriodicalId":12547,"journal":{"name":"Global Journal of Science Frontier Research","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83661562","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
Effects of Long-Term Fertilisation and Weather on Soil Properties and Spring Barley Yield 长期施肥和气候对土壤性质及春大麦产量的影响
Global Journal of Science Frontier Research Pub Date : 2021-02-20 DOI: 10.34257/GJSFRDVOL21IS1PG35
V. Loide, L. Edesi
{"title":"Effects of Long-Term Fertilisation and Weather on Soil Properties and Spring Barley Yield","authors":"V. Loide, L. Edesi","doi":"10.34257/GJSFRDVOL21IS1PG35","DOIUrl":"https://doi.org/10.34257/GJSFRDVOL21IS1PG35","url":null,"abstract":"The purpose of the experiment was to determine long-term fertilization and the effects of weather on the soil properties and spring barley yields. A long-term field experiment—with crop rotations of potatoes (hemp oil from 2017), spring barley, spring barley with red clover (undersown), and red clover was established in 1960 Kuusiku, Estonia. Different barley varieties was used over the experimental period. With except the spring barley variety 'Anni', which was tested from 1995–2019.The experiment has three fertilizer treatments: the moderate dose of fertilization (NPK1),double NPK1 (NPK2), and moderate fertilization with farmyard manure (NPK1 + FYM). After harvest, the soil samples were collected from 0– 0.2 m of topsoil and 0.2–0.4 m of subsoil from each plot, using a soil drill.","PeriodicalId":12547,"journal":{"name":"Global Journal of Science Frontier Research","volume":"35 1","pages":"35-41"},"PeriodicalIF":0.0,"publicationDate":"2021-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78389077","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
A Note on Identifying Critical Activities in Project Scheduling via Linear Programming on Spreadsheets, with Incidental Pedagogical Remarks 通过电子表格上的线性规划识别项目调度中的关键活动的说明，附带教学注释
Global Journal of Science Frontier Research Pub Date : 2021-02-12 DOI: 10.34257/GJSFRFVOL21IS1PG1
G. Light
{"title":"A Note on Identifying Critical Activities in Project Scheduling via Linear Programming on Spreadsheets, with Incidental Pedagogical Remarks","authors":"G. Light","doi":"10.34257/GJSFRFVOL21IS1PG1","DOIUrl":"https://doi.org/10.34257/GJSFRFVOL21IS1PG1","url":null,"abstract":"This note presents a speedy resolution of the critical activities for the critical path method (CPM) in project management by first running Excel Solver to obtain the minimized time of the completion of the project in question and next perturbing the required times of all the involved activities concomitantly to reveal the critical activities by observing the difference in the minimized times. We use extensions of decimal places for the classroom demonstration of the above-said perturbation, and consider additions of log(prime numbers) to the required times of all the activities to serve any large-scale professional analyses without using tailored-made software. As a separate incidental pedagogical note, we show a heuristic approach to constructing exactly three constraints to yield positive optimal values for all the three decision variables in linear programming.","PeriodicalId":12547,"journal":{"name":"Global Journal of Science Frontier Research","volume":"49 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83206237","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
Tectono-Sedimentary Evolution of the Uranium Deposits of the DASA Graben, Northern Niger 尼日尔北部DASA地堑铀矿床的构造-沉积演化
Global Journal of Science Frontier Research Pub Date : 2021-02-06 DOI: 10.34257/GJSFRHVOL21IS1PG37
Abdoulwahid Sani, M. Konaté, P. Wollenberg, A. Christophe
{"title":"Tectono-Sedimentary Evolution of the Uranium Deposits of the DASA Graben, Northern Niger","authors":"Abdoulwahid Sani, M. Konaté, P. Wollenberg, A. Christophe","doi":"10.34257/GJSFRHVOL21IS1PG37","DOIUrl":"https://doi.org/10.34257/GJSFRHVOL21IS1PG37","url":null,"abstract":"This study presents the structural evolution of the N70° trending Paleozoic-Mesozoic DASA graben, which is considered a sub-basin of the Tim Mersoï basin, and is located in northern Niger. The DASA graben is a uranium-rich trough discovered in recent exploration surveys.\u0000A tectono-sedimentary analysis of the DASA graben was implemented with a combined use of satellite imagery, field observations, borehole data analysis and available literature. This graben was affected from the Carboniferous to the Early Cretaceous by two major tectonic periods. The first period was an uplifting stage, which prevailed during the Carboniferous-Permian times and the second, ranging from the Triassic to the Early Cretaceous, corresponds to a rifting episode. The particularity of the DASA graben is that the sediments contain very high uranium grades. Lithological and tectonic factors controlled the emplacement of the uranium mineralization in the graben. The successive fracturing phases that affected the DASA graben were associated with a greater circulation of hydrothermal fluids and would have favoured higher grades of uranium mineralization.","PeriodicalId":12547,"journal":{"name":"Global Journal of Science Frontier Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91382951","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
Climate Change, South Asia and Southeast Asian Region 气候变化，南亚和东南亚地区
Global Journal of Science Frontier Research Pub Date : 2021-01-15 DOI: 10.34257/GJSFRHVOL20IS6PG1
B. Kumar
{"title":"Climate Change, South Asia and Southeast Asian Region","authors":"B. Kumar","doi":"10.34257/GJSFRHVOL20IS6PG1","DOIUrl":"https://doi.org/10.34257/GJSFRHVOL20IS6PG1","url":null,"abstract":"It is well known that the climatic conditions of our earth have changed since its origin. In its early days environmental conditions were not suitable for life. However, with due course of time it has changed and origin of life took place. Scientists have found seven cycles of glacial advance and retreat during the last 650,000 years and also that the last ice age abruptly ended about 7,000 years ago. The phenomenon of climate change has many implications and immense effects on our environment. There are many factors such as emissions of greenhouse gases, deforestation, urbanization and industrialization which impact the climate. Some of the major consequences of climate change include impacts on sea level rise in coastal areas, impacts on forestry, agriculture and food productivity, life and property in coastal areas, marine life, wildlife habitat and natural ecosystem, biodiversity, glaciers, floods and human health. This paper is an attempt to understand the phenomenon of climate change, historical evidences of climate change, identify reasons of global warming and climate change and its consequences in the South Asia and, in its neighbouring regions.","PeriodicalId":12547,"journal":{"name":"Global Journal of Science Frontier Research","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75564909","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
Bi-Directional Infinity Box 双向无限箱
Global Journal of Science Frontier Research Pub Date : 2021-01-05 DOI: 10.34257/GJSFRFVOL20IS9PG1
Jayant Hooda
{"title":"Bi-Directional Infinity Box","authors":"Jayant Hooda","doi":"10.34257/GJSFRFVOL20IS9PG1","DOIUrl":"https://doi.org/10.34257/GJSFRFVOL20IS9PG1","url":null,"abstract":"The following article introduces a new concept of Bi-directional Box. The concept is explained by simultaneously calculating a new result: sum of all the natural multiples of each natural number up to infinity. The concept of Bi-directional Box helps to organise multiple infinite series and study different patterns in multiple infinite series. This Bi-directional box can be converted into a triangle by rearranging the already organised terms of the initial box. Similar to Pascal’s triangle, this box has many patterns and properties instilled in it too. Along with the initial standard box, infinite such boxes can be made depending upon the sequence/series in which the pattern is to be observed: an example with different sequences is provided at the end of the article.","PeriodicalId":12547,"journal":{"name":"Global Journal of Science Frontier Research","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80613715","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
Reduced Symmetrizer Equation 简化对称方程
Global Journal of Science Frontier Research Pub Date : 2021-01-05 DOI: 10.34257/GJSFRFVOL20IS9PG15
R. Nair
{"title":"Reduced Symmetrizer Equation","authors":"R. Nair","doi":"10.34257/GJSFRFVOL20IS9PG15","DOIUrl":"https://doi.org/10.34257/GJSFRFVOL20IS9PG15","url":null,"abstract":"This paper revisits the real symmetrizer equation in the literature to transform it into a reduced symmetrizer equation. This reduction can be accomplished by decomposing the symmetrizer of the equation. The reduced equation has a diagonal matrix as its symmetrizer and can be further decomposed into more such equations. These reduced equations are coexisting and synchronized with the original symmetrizer equation. Associated results concerning the reduced symmetrizer equation are introduced. A numerical algorithm for symmetrizer computation is developed based on these results. Typical symmetrizer problems in the literature are solved using the algorithm and the results are presented.","PeriodicalId":12547,"journal":{"name":"Global Journal of Science Frontier Research","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84523880","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
Is there a Similiarity between Fibonacci Sequence and Euler’s Number with Respect to Quantum Perspective Model? 在量子透视模型方面，斐波那契数列和欧拉数有相似之处吗?
Global Journal of Science Frontier Research Pub Date : 2021-01-05 DOI: 10.34257/GJSFRFVOL20IS9PG35
Tahir Ölmez
{"title":"Is there a Similiarity between Fibonacci Sequence and Euler’s Number with Respect to Quantum Perspective Model?","authors":"Tahir Ölmez","doi":"10.34257/GJSFRFVOL20IS9PG35","DOIUrl":"https://doi.org/10.34257/GJSFRFVOL20IS9PG35","url":null,"abstract":"According to Quantum Perspective Model, this article studies whether there is a link between the Euler’s numbers and the Fibonacci series. When the digits of the Euler’s number after the comma are converted from decimal(10) number base system to binary(2) number base system, it corresponds to the number in the Fibonacci series.(0,1,1,2,3,5,8,13,21,34,55...)[7].From this point of view, when the first hundred digits of the Euler’s numbers after the comma were calculated, the number \"55\" (ten times) in the Fibonacci series was found, in particular. Besides, the eleventh number in the Fibonacci series is also \"55\".In other words, the approximate unchanged numbers of the golden ratio numbers after the comma can be reached for the first time after dividing them from “55” to “34” (1,618). In sum, Euler’s numbers are not only attributed to the Fibonacci series in mathematics, but also attributed to the golden ratio in nature.","PeriodicalId":12547,"journal":{"name":"Global Journal of Science Frontier Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75355084","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
With Respect to Quantum Perspective Model, Can Euler Numbers be Related to Biochemistry? 关于量子透视模型，欧拉数是否与生物化学有关?
Global Journal of Science Frontier Research Pub Date : 2021-01-05 DOI: 10.34257/GJSFRFVOL20IS9PG7
Tahir Ölmez
{"title":"With Respect to Quantum Perspective Model, Can Euler Numbers be Related to Biochemistry?","authors":"Tahir Ölmez","doi":"10.34257/GJSFRFVOL20IS9PG7","DOIUrl":"https://doi.org/10.34257/GJSFRFVOL20IS9PG7","url":null,"abstract":"This article researches whether there is a link between Euler’s numbers and genetic codes. At first, the sum of the numbers of the first fifteen \"15\" digits of Euler’s numbers after the comma are converted to bases in genetic codes. Secondly, after the comma, Euler’s numbers with eighteen fifteen groups are converted to nucleotide bases. So, the results obtained by this way are expressed as nucleotide bases ( A, T, C, G, U). (A)Adenine, (T)Thymine, (C)Cytosine, (G),Guanine, (U)Uracil. Thirdly, the search result is similar to ZEBRAFISH-DANIO RERIO, and even bat coronavirus after the NCBI (National Biotechnology Information Center) searched this sequence ”AUGUUGAUAUTAAUCATC”. Fourtly, the genetic codes of Zebrafish have been proven to be very similar to human genetic codes. Fifthly, multiple spawning of these fish species also means that Euler's numbers are increasing. In sum, the relationship between the Euler’s numbers in mathematical science and the atomic weights of atomic elements in genetic codes also shed lights on Biochemistry.","PeriodicalId":12547,"journal":{"name":"Global Journal of Science Frontier Research","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80210682","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
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