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A REVIEW ON RECYCLING OF THERMOSETS 热固性塑料回收研究进展
Pub Date : 2022-03-25 DOI: 10.14299/ijser.2022.03.05
L. Jayakumari, M. A. Kumar, B. Arunbala, R. Sailaja
Thermosets are a type of plastics that pose a major problem when it comes to easy reusability and recycling because they become irreversibly rigid when subjected to progressive increase in temperatures. Epoxy resins, Phenol Formaldehyde, and Polyurethanes are a few of the many thermosets that are widely employed in several different fields. The rigid, brittle, opaque thermosets, in general, possess qualities like good mechanical strength at elevated temperatures, good chemical resistance in addition to even being self-extinguishing at times (mostly with the help of additives), with low smoke emissions, as highlighted by the British Plastics Federation. However, these properties which serve as an advantage to the end product also affect their recyclability, which is difficult and limited, because of their ability to undergo cross-linking on heating, which ultimately results in the formation of strong covalent bonds that cannot be broken easily. Several commercial techniques are now available for recycling thermosets, which include - Mechanical Processing, Thermal Processing and Chemical Processing. These methods demand higher amount of energy for offering feasible results. There are several studies that have focused on degradation (which is the essential first step that progressively leads to recycling) of thermosets. This review highlights the importance of such studies, techniques and methodologies on aspects including feasibility, cost, sustainability and technological innovation.
热固性塑料是一种塑料,当它易于重复使用和回收时,会造成一个主要问题,因为当温度逐渐升高时,它们会变得不可逆地刚性。环氧树脂、酚醛树脂和聚氨酯是许多热固性材料中的几种,它们被广泛应用于几个不同的领域。一般来说,刚性、易碎、不透明的热固性塑料在高温下具有良好的机械强度、良好的耐化学性,有时甚至可以自熄(主要是在添加剂的帮助下),并且烟雾排放量低,正如英国塑料联合会所强调的那样。然而,这些作为最终产品优势的特性也影响了它们的可回收性,这是困难和有限的,因为它们在加热时能够进行交联,这最终导致形成不易断裂的强共价键。现在有几种商业技术可用于回收热固性材料,包括机械加工、热加工和化学加工。这些方法需要更高的能量来提供可行的结果。有几项研究的重点是热固性塑料的降解(这是逐步导致回收的重要第一步)。本审查强调了这些研究、技术和方法在可行性、成本、可持续性和技术革新等方面的重要性。
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引用次数: 1
A Survey on Virtual Machine Migration in Cloud Computing 云计算中虚拟机迁移研究综述
Pub Date : 2022-03-25 DOI: 10.14299/ijser.2022.03.03
Waqas Hasan
Cloud computing provides multiple services to users through the internet and these services include cloud storage, applications, servers, security and large network access. Virtual Machine allows the user to emulate multiple operating systems on a single computer; with the help of virtual machine migration users can transfer operating system instances from one computer to multiple computer machines. In this paper we will be discussing VM migration in cloud and also I will explain the whole procedure of VM migration. The two methods through which we can perform VM migration are Live VM migration and NON-live VM migration.VM migration also helps in managing the loads of the multiple machines and with VM we can save power consumption. People have written about cloud computing and virtual machines in previous studies, but in this research, we'll speak about virtual machine migration in cloud computing, as well as the techniques that are used in the VM migration process. I have used table to show the differences between VM migration techniques.
云计算通过互联网为用户提供多种服务,这些服务包括云存储、应用程序、服务器、安全和大型网络接入。虚拟机允许用户在一台计算机上模拟多个操作系统;在虚拟机迁移的帮助下,用户可以将操作系统实例从一台计算机转移到多台计算机。本文将讨论云中的虚拟机迁移,并解释虚拟机迁移的整个过程。虚拟机迁移有两种方式:Live VM迁移和NON-live VM迁移。VM迁移还有助于管理多台机器的负载,并且使用VM可以节省功耗。在以前的研究中,人们已经写过关于云计算和虚拟机的文章,但在本研究中,我们将讨论云计算中的虚拟机迁移,以及在VM迁移过程中使用的技术。我使用表格来显示VM迁移技术之间的差异。
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引用次数: 0
Supporting Families Who Lost Their Parents Due to COVID-19 支持因COVID-19而失去父母的家庭
Pub Date : 2022-03-25 DOI: 10.14299/ijser.2022.03.02
Huu Tien Ngo
On July 7, 2021, the global death toll from COVID-19 surpassed 4 million as the crisis devolved into a race between the vaccine and highly contagious variants. According to estimates from the Peace Research Institute in Oslo, the number of lives lost in the last year and a half, as compiled from official sources by Johns Hopkins University, is roughly equal to the number of people killed in battle in all of the world's wars since 1982 (Segarra, 2021). Among those who died from COVID-19, many people were parents in their families. Their deaths have severely affected their children's physical and mental health. Therefore, through a review of various reports, this paper will develop a familiarity with families whose parents have died of Covid-19. These families have received counseling and other types of support. Keywords: COVID-19, died, parents, families, counseling.
2021年7月7日,全球COVID-19死亡人数超过400万,危机演变为疫苗与高传染性变体之间的竞赛。根据奥斯陆和平研究所(Peace Research Institute)的估计,根据约翰霍普金斯大学(Johns Hopkins University)的官方资料,过去一年半的死亡人数大致相当于1982年以来世界上所有战争中丧生的人数(Segarra, 2021)。在死于COVID-19的人中,许多人是他们家庭中的父母。她们的死亡严重影响了子女的身心健康。因此,通过对各种报告的回顾,本文将熟悉父母死于Covid-19的家庭。这些家庭得到了咨询和其他类型的支持。关键词:COVID-19,死者,父母,家属,咨询。
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引用次数: 0
ANALYSIS OF COMMUNITY CHARACTERISTICS USING BIODIVERSITY IN ECOSYSTEM AREAS NGAWI DISTRICT MANTINGAN FOREST 基于生物多样性的恩加威区曼汀安森林生态系统群落特征分析
Pub Date : 2022-02-25 DOI: 10.14299/ijser.2022.02.04
Rudy Bintoro Hari Larmintho
This study aims to determine the characteristics of communities that take advantage of diversity life in the Ecosystem Forest free district Ngawi . Research location covering the villages of Jatimulyo, Kedungharjo, Mantingan, Pakah Pengkol, Sambirejo and Tambakboyo. Sixth village the is in the District free district Ngawi . Data analysis techniques used include descriptive analysis and analysis of strength of association. Research findings indicate that the characteristics of respondents in utilizing the forest include age, income, education, number of dependents, occupation and distance from house to forest. Respondents aged 25-30 years (35.8%) are the largest age group in taking forest resources. Most of the community income groups from using the forest ranged from Rp. 151,000 to Rp. 300,000 (42.6%). The largest respondent who took forest resources had family dependents of more than 6 people (29.6%). Farmers' groups make the most use of forest products, 48.1%. As many as 38.9% of respondents use the forest within a distance of 0.51-1 km from their homes. The largest extraction of forest resources is in the form of firewood with a proportion reaching 40.7%. Based on an analysis of the strength of the association shows that there are five independent variables that affect the composition of resource use biological forests, each with a Cramer's . value V for variable age (0.409), education (0.247), income (0.333), number of dependents family (0.388), occupation (0.400) and distance from house to forest (0.434). The distance variable shows the most dominant strength for influencing respondents in utilizing resources forest, with a Cramer's V value of 0.434
本研究旨在确定利用生态系统森林无区恩加威生物多样性的群落特征。研究地点包括Jatimulyo、Kedungharjo、Mantingan、Pakah Pengkol、Sambirejo和Tambakboyo村。第六村是在自由区里的恩加威区。使用的数据分析技术包括描述性分析和关联强度分析。研究结果表明,被调查者利用森林的特征包括年龄、收入、受教育程度、受抚养人数量、职业和房屋与森林的距离。25-30岁的受访者(35.8%)是获取森林资源最多的年龄组。利用森林获得的大多数社区收入群体在15.1万至30万卢比之间(42.6%)。获取森林资源最多的被调查者家庭受抚养人超过6人(29.6%)。利用林产品最多的是农民团体,占48.1%。多达38.9%的受访者在离家0.51-1公里的范围内使用森林。森林资源的最大开采形式是薪柴,占比达40.7%。基于关联强度的分析表明,影响生物森林资源利用构成的独立变量有5个,每个变量都具有克莱默值。变量V值为年龄(0.409)、受教育程度(0.247)、收入(0.333)、受抚养家庭数(0.388)、职业(0.400)、家到森林距离(0.434)。距离变量对被调查者资源森林利用的影响最显著,克莱默V值为0.434
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引用次数: 0
Impact Of Work Load On Nursing Patient Interaction In Tertiary Care Hospital Punjab 工作负荷对旁遮普三级医院护理患者互动的影响
Pub Date : 2022-02-25 DOI: 10.14299/ijser.2022.02.07
Sukhjeet Kaur, Dr. Sukhdeep Kaur
This study was done to assess the nursing knowing among nurse-patient workload by stratified random sampling. A total of 100 samples was selected and given the self-designed and pre-tested questionnaire. The data was collected and analyzed by using percentages and frequency. It is found that there is positive communication among Nurse- Patient. There is no significant (p<0.005) relationship between communication with age, sex, and education. But there is a significant relationship of quality of communication with the number of times patient was admitted in tertiary care Hospital
本研究采用分层随机抽样的方法,对护患工作量中的护理知识进行评估。共选取100个样本,给予自行设计和预测的问卷。数据的收集和分析采用百分比和频率。结果发现护患之间有良好的沟通。沟通与年龄、性别、受教育程度无显著关系(p<0.005)。但沟通质量与三级医院住院次数之间存在显著的相关关系
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引用次数: 0
Effectiveness of practical lab classes of basic sciences for doctors during clinical practice: KAP 临床实践中医生基础科学实践实验课的有效性:KAP
Pub Date : 2022-02-25 DOI: 10.14299/ijser.2022.02.03
Muhammad Zaeem, Hafiz Muhammad Faizan Javed, U. Ashraf, Muhammad Umar Shahzad, Talha Sajjad, N. Ain, Saleeha Sajjad, S. Ehsan
The aim of this study is to assess how beneficial are practical lab classes of basic sciences for medical practitioners during their clinical practice.
本研究的目的是评估如何有益的实践实验课的基础科学的医生在他们的临床实践。
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引用次数: 0
GEOTECHNICAL BEHAVIOR OF SILTY CLAY REINFORCED WITH MARBLE DUST AND CORN SILK FIBER 大理石粉和玉米丝纤维加筋粉质粘土的岩土性能
Pub Date : 2022-02-25 DOI: 10.14299/ijser.2022.02.02
Saima Mehrooi
The motivation behind this research was to learn more regarding the properties of soil strengthened with marble dust and cornsilk fiber, which are industrial waste products and corn products, respectively. The use of these waste materials reduces pollution and human reliance on natural resources, resulting in a more sustainable construction approach.The consequences of cornsilk and marble dust fiber on soil strength prospect for silty clay soil are investigated in this study. Cornsilk was mixed with soil at various rates in this study, including.4 %,.8 %, 1.2 %, and 1.8 %. Furthermore, the length of 40mm long fiber was used in the study. After that, the marble dust was blended in various amounts with the best soil fibre mix, including 5%, 15%, 25%, and 35%. The investigation of an influence of marble dust and cornsilk fiber on Atterbers limits, C.B.R., U.C.S., O.M.C., and D.D. was done. Adding marble dust and cornsilk fiber improved the U.C.S. and C.B.R. As per experimental results, the ideal value of C.B.R. and U.C.S. was at 25 % marble dust, 74.6 % soil and 0.4 % cornsilk fiber
此次研究的动机是为了进一步了解用工业废料大理石粉尘和玉米丝纤维加固土壤的特性,它们分别是玉米废料。这些废料的使用减少了污染和人类对自然资源的依赖,从而形成了一种更可持续的建筑方式。研究了玉米丝和大理石粉尘纤维对粉质粘土土强度前景的影响。在本研究中,玉米丝以不同的速率与土壤混合,包括。4%,。8%, 1.2%和1.8%。此外,研究中使用的纤维长度为40mm。然后,将大理石粉与最佳土壤纤维混合物(5%、15%、25%、35%)按不同比例混合。研究了大理石粉尘和玉米丝纤维对Atterbers限值、C.B.R、U.C.S、O.M.C和D.D.的影响。大理岩粉和玉米丝纤维的添加改善了土壤的C.B.R.和c.c.r.。试验结果表明,在大理岩粉25%、土壤74.6%和玉米丝纤维0.4%的条件下,C.B.R.和c.c.s.的理想值为
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引用次数: 0
THE EFFECT OF CAPITAL, RAW MATERIALS, TECHNOLOGY AND LABOR ON THE VALUE OF PRODUCTION IN MICRO ENTERPRISES IN MAGETAN DISTRICT 资本、原材料、技术和劳动力对马吉滩地区微型企业生产价值的影响
Pub Date : 2022-02-25 DOI: 10.14299/ijser.2022.02.05
A. Susanto
The goal of this study was to examine the impact of capital, raw materials, technology, and labor on the output value of micro-enterprises in Magetan Regency. The population in this study consisted of 32 micro-enterprises in Magetan Regency that were chosen based on specific criteria. Documentation is used in data collecting strategies. The data analysis approach employs multiple linear regression analysis, regression coefficient analysis, determination analysis, and hypothesis testing (t test and F test). The study found that (1) capital has a positive and significant effect on the production value of micro-enterprises in Magetan Regency; (2) raw materials have a positive and significant effect on the production value of micro-enterprises in Magetan Regency; (3) technology has no positive and significant effect on the production value of micro-enterprises in Magetan Regency; and (4) labor has a positive and significant effect on the production value of micro-enterprises in Magetan Regency
摘要本研究旨在探讨资本、原材料、技术和劳动力对马吉坦县微型企业产值的影响。本研究的人口包括根据特定标准选择的Magetan Regency的32家微型企业。文档用于数据收集策略。数据分析方法采用多元线性回归分析、回归系数分析、决定分析和假设检验(t检验和F检验)。研究发现:(1)资本对马吉坦县域微型企业的产值有显著的正向影响;(2)原材料对马吉滩县域微型企业的产值有显著的正向影响;(3)技术对马吉坦县域微型企业产值没有显著的正向影响;(4)劳动力对马吉坦县域微型企业的产值有显著的正向影响
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引用次数: 0
App-based motorbike taxi driver: The career trend in Ho Chi Minh City, Vietnam from 2021-2026 基于app的摩托车出租车司机:2021-2026年越南胡志明市的职业趋势
Pub Date : 2022-01-25 DOI: 10.14299/ijser.2022.03.01
Huu Tien Ngo
Recently, app-based motorbike taxi drivers have been one of Vietnam's most popular jobs, especially in Ho Chi Minh City. This is a job with simple requirements and a stable income, and it makes travelling convenient for city dwellers and is a source of livelihood for many people of this largest city. The aim of this paper is to prove that app-base motorbike taxi driver is the career trend in Ho Chi Minh City from 2021 to 2026 by using a literature review method because the method used in this paper is supported by relevant sources. Although severely affected by the outbreak of the Covid-19 pandemic during the past two years like other occupations, technology motorbikes taxi driver will still attract many people in the next five years. Keywords: app-based motorbike taxi, driver, Ho Chi Minh City, career trend, from 2021 to 2026.
最近,基于应用程序的摩托车出租车司机已经成为越南最受欢迎的工作之一,尤其是在胡志明市。这是一份要求简单、收入稳定的工作,为城市居民的出行提供了便利,也是这个最大城市许多人的生计来源。本文的目的是为了证明基于app的摩托车出租车司机是胡志明市从2021年到2026年的职业趋势,使用文献综述的方法,因为本文使用的方法是有相关资料支持的。尽管像其他职业一样,在过去两年受到新冠肺炎疫情的严重影响,但在未来五年内,科技摩托车出租车司机仍将吸引很多人。关键词:app摩托车出租车司机胡志明市职业趋势2021 - 2026
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引用次数: 0
Consequences of unrealistic optimism and pessimism for actual behavior: An experimental evidence 不切实际的乐观和悲观对实际行为的影响:实验证据
Pub Date : 2021-12-25 DOI: 10.14299/ijser.2021.12.03
Dr Subramanian S Iyer, S. S., Sai Balaji Smr
In this study, we performed experiments to investigate the negative consequences of unrealistic optimism and pessimism. We also attempted to extend the theory of unrealistic optimism and pessimism by investigating how past events running contrary to expectations impact unrealistic optimism and pessimism. We made participants play an insurance decision game pertaining to a gamble for two consecutive rounds while inducing unrealistic optimism and pessimism within the context of the game.
在这项研究中,我们进行了实验来调查不现实的乐观主义和悲观主义的负面影响。我们还试图通过调查与预期相反的过去事件如何影响不切实际的乐观主义和悲观主义来扩展不切实际的乐观主义和悲观主义理论。我们让参与者连续玩两轮与赌博有关的保险决策游戏,同时在游戏背景下诱导不切实际的乐观和悲观。
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引用次数: 0
期刊
International Journal of Scientific &amp; Engineering Research
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