American Journal of Applied Sciences最新文献_第7页

Fractional Quantum Problem Based on Caputo-Fabrizio Derivative 基于Caputo-Fabrizio导数的分数阶量子问题

American Journal of Applied Sciences Pub Date : 2022-01-15 DOI: 10.3923/jas.2022.42.47

Bouzenna Fatma El-Genbazi, Meftah Mohammed T

引用次数: 0

Double Diffusive Convection Heat and Moisture Transfer Inside a Planted Roof Building Under Hot Humid Climate: Case of Lomé City in West Africa 湿热气候下植物屋面建筑内部的双扩散对流热湿传递:以西非lomovel市为例

American Journal of Applied Sciences Pub Date : 2022-01-01 DOI: 10.3844/ajassp.2022.6.20

H. Samah, M. Banna, B. Zeghmati

{"title":"Double Diffusive Convection Heat and Moisture Transfer Inside a Planted Roof Building Under Hot Humid Climate: Case of Lomé City in West Africa","authors":"H. Samah, M. Banna, B. Zeghmati","doi":"10.3844/ajassp.2022.6.20","DOIUrl":"https://doi.org/10.3844/ajassp.2022.6.20","url":null,"abstract":": Planted roofs have been investigated as a passive cooling technology for energy efficiency purposes in buildings. More quantitative data on this topic are required to solve a lack of information for many specific regions. This study is focused on a numerical investigation of the thermal comfort inside a green roof rectangular ventilated cavity in a hot and humid climate like the one of Lomé in west Africa. The left vertical is heated and partly saturated with water to provide humidification of the indoor air. Transfer dimensionless equations are solved using an implicit ﬁnite difference scheme, the Thomas algorithm, and the Gauss-Seidel iterative method. We analyze the effects of inlet airflow on the thermal process inside the ventilated and planted enclosure have been investigated. The comfort temperature range deduced from the data is 25°C < T c < 27°, and that of the indoor air humidity is 49% < Hr <60%. The different ranges obtained are significant and lead to improving inside thermal comfort. The solar flux of 350 W.m -2 , the average value in the case of Lomé city, was used to establish a heat transfer correlation to predict heat transfer through the roof with a relative error not exceeding 4%. This model can be very useful for engineers in the design and optimization stage of a green roof in practical buildings.","PeriodicalId":7436,"journal":{"name":"American Journal of Applied Sciences","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82040939","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

Comparative Studies on Development History of Chinese Diasporic Media in the West 中国流散媒体在西方的发展史比较研究

American Journal of Applied Sciences Pub Date : 2022-01-01 DOI: 10.3844/ajassp.2022.43.50

Jack Liu

{"title":"Comparative Studies on Development History of Chinese Diasporic Media in the West","authors":"Jack Liu","doi":"10.3844/ajassp.2022.43.50","DOIUrl":"https://doi.org/10.3844/ajassp.2022.43.50","url":null,"abstract":": This study compares and presents the similarities in the development of Chinese diasporic media in Western countries, especially focusing on the influence of the Chinese diaspora and the homeland political economy, from the past to the present. An investigation was conducted on the research sample-the Chinese diaspora and diasporic media in Australia and New Zealand through documentary and field research. The research results suggest that the transformation of sub-Chinese groups (from Hong Kongese to the mainlanders) and Greater China’s political economy simultaneously determine the readership, advertisements, ownership, as well as media content from the early 19 th century to the present. Subsequently, comparisons of the development of the Chinese diasporic media in the US, Canada, and Western Europe suggest the same two influential factors. Furthermore, the results of the findings show that contemporary Chinese diasporas and the mainland political economy impact are two of the most influential factors in the boom of overseas Chinese digital media. Overall, although Chinese diasporic media are varied and diverse, their development is determined by two external factors: the Chinese diaspora and the homeland. These findings could serve as a reference that contributes to both the diasporic media industry and research.","PeriodicalId":7436,"journal":{"name":"American Journal of Applied Sciences","volume":"122 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73106786","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

Omicron SARS Co-V2 Sub Variants BA.2 and BA.3 have Lower Free Binding Energy than BA.1 Omicron SARS Co-V2亚变体BA.2和BA.3的自由结合能低于BA.1

American Journal of Applied Sciences Pub Date : 2022-01-01 DOI: 10.3844/ajassp.2022.105.108

R. Mungmunpuntipantip, V. Wiwanitkit

引用次数: 0

Controlled Delivery System for NPK Agrochemical Release from Chitosan Copolymer Hydrogels 壳聚糖共聚物水凝胶释放氮磷钾农药的控制释放系统

American Journal of Applied Sciences Pub Date : 2022-01-01 DOI: 10.3844/ajassp.2022.84.92

F. H. Jabrail, M. S. Mutlaq

引用次数: 3

Optimization of Extraction of Cannabinoids and Flavonoids Substances from Influence Cannabis sp. and their Biological Activities before and after Decarboxylation 大麻科植物中大麻素和黄酮类物质提取工艺优化及脱羧前后生物活性研究

American Journal of Applied Sciences Pub Date : 2022-01-01 DOI: 10.3844/ajassp.2022.68.77

O. Kronusová, Michala Piklová, Kristýna Šírová, P. Kastanek, R. Gürlich, Petr Bratka

{"title":"Optimization of Extraction of Cannabinoids and Flavonoids Substances from Influence Cannabis sp. and their Biological Activities before and after Decarboxylation","authors":"O. Kronusová, Michala Piklová, Kristýna Šírová, P. Kastanek, R. Gürlich, Petr Bratka","doi":"10.3844/ajassp.2022.68.77","DOIUrl":"https://doi.org/10.3844/ajassp.2022.68.77","url":null,"abstract":": Inflorescence of eight different varieties of Cannabis sp. (3 hemp varieties and 5 medical cannabis varieties) were subjected to extraction with n-hexane or ethanol as representatives of non-polar and polar solvents. Crude extracts were either used directly or after decarboxylation of cannabis acids for measurement of selected biological activities-cytotoxicity against carcinogenic line B16 (musculus skin melanoma cells), cytotoxicity against Human Dermal Fibroblast (HDF) as a control non-carcinogenic line, antimicrobial activity against Candida albicans (DBM, 2186), Staphylococcus aureus (ATCC, 25923) and Salmonella enterica (CCM, 4420) and antioxidant activity using the ORAC (Oxygen Radical Absorbance Capacity) assay. 32 samples with a different profile of cannabinoids measured by HLPC were thus obtained and evaluated. The content of total flavonoids that could exert synergic action on bioactivity was measured by the spectrophotometric method. The hexane extracts showed higher antimicrobial activity, decarboxylation of the samples led to an increase in cytotoxicity against the human skin fibroblast line in most of the studied samples, and to decrease in the antioxidant effects of the decarboxylated extracts. The obtained findings suggest a therapeutic potential of the selected cannabis extracts in the treatment of skin cancer, skin wounds, or surgical wound healing.","PeriodicalId":7436,"journal":{"name":"American Journal of Applied Sciences","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85755204","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 Data-Sharing Model to Secure Borders Using an Artificial-Intelligence-Based Risk Engine and Big-Data Concepts 利用基于人工智能的风险引擎和大数据概念实现边境安全的数据共享模型

American Journal of Applied Sciences Pub Date : 2022-01-01 DOI: 10.3844/ajassp.2022.51.67

Mohammad S. Al Rousan, B. Intrigila

引用次数: 0

Rainwater Harvesting and Treatment Systems in South America: A Bibliometric Analysis (2000-2021) 南美的雨水收集和处理系统:文献计量分析(2000-2021)

American Journal of Applied Sciences Pub Date : 2022-01-01 DOI: 10.3844/ajassp.2022.93.98

E. Rojas, Manuel E. Reátegui-Inga, Reiner Reátegui Inga, Pierina Lizbeth Neyra Vargas, Meliza del Pilar Bustos Chavez, Alberto Franco Cerna Cueva, Lenin Quiñones Huatangari, A. Guadalupe, Jorge Luis Vargas Espinoza

引用次数: 0

Presenting a New Equation that Accurately Determines the Size of a Moving Elementary Particle 提出了一个新的方程，可以精确地确定运动基本粒子的大小

American Journal of Applied Sciences Pub Date : 2022-01-01 DOI: 10.3844/ajassp.2022.109.119

F. Petrescu

引用次数: 0

Effectiveness of Business Practices Related to Climate Change as a Driver for Improving Environmental Performance 与气候变化相关的商业实践作为改善环境绩效的驱动力的有效性

American Journal of Applied Sciences Pub Date : 2022-01-01 DOI: 10.3844/ajassp.2022.21.33

Naciti Valeria, Centorrino Giovanna

{"title":"Effectiveness of Business Practices Related to Climate Change as a Driver for Improving Environmental Performance","authors":"Naciti Valeria, Centorrino Giovanna","doi":"10.3844/ajassp.2022.21.33","DOIUrl":"https://doi.org/10.3844/ajassp.2022.21.33","url":null,"abstract":"Corresponding Author: Naciti Valeria Department of Economics, University of Messina, Messina, Italy Email: vnaciti@unime.it Abstract: This study explores the relationship between business practices related to climate change and environmental performance. Using an international sample of analysis from 2013 to 2017, the paper examines how managerial incentives, public policy, disclosure, and responsibilities to executives on climate change, as corporate governance factors, affect a firm's environmental performance. By employing several regression analyses, our independent variables-incentives, public policy, disclosure, and responsibilities-show to improve the environmental performance in terms of reduction of GHG emissions. In addition, results show that stakeholders' engagement seems less relevant in the US concerning other countries, this could be related to the US public opinion which exerts lower pressures on companies to deal with climate change. This study contributes to the environmental governance literature, where the impact of governance practices on environmental problem solving has not been widely studied.","PeriodicalId":7436,"journal":{"name":"American Journal of Applied Sciences","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84607832","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