CTU Journal of Innovation and Sustainable Development最新文献_第6页

Synthesis and application of Fe3O4/GO/PVP composite material for methylene blue adsorption 亚甲基蓝吸附用Fe3O4/GO/PVP复合材料的合成及应用

CTU Journal of Innovation and Sustainable Development Pub Date : 2023-07-14 DOI: 10.22144/ctu.jen.2023.014

H. Luong, Thi Nhu Y Nguyen, V. Nguyen, T. Ngo, Nhu-Ngoc Nguyen, P. T. Ly

引用次数: 0

Enhancement of photocatalytic activity of TIO2 for gaseous toluene removal by simple mechanical mixing with modified zeolite 改性沸石对TIO2光催化去除气态甲苯活性的增强

CTU Journal of Innovation and Sustainable Development Pub Date : 2023-07-14 DOI: 10.22144/ctu.jen.2023.016

Thai Le Truong Giang, Quang Thi Hue Minh, Thai Nguyen Trieu Nguyen, Cu Hoang Minh, K. Le, Mai Hai Nghi, Le Huy Hoang, Quang Long Nguyen, Ngo Tran Hoang Duong

引用次数: 0

Theoretical and experimental assessment of the effect of adhesive bond thickness on the flexural capacity of CFRP strengthened beams 粘结厚度对CFRP加固梁抗弯性能影响的理论与实验研究

CTU Journal of Innovation and Sustainable Development Pub Date : 2023-07-14 DOI: 10.22144/ctu.jen.2023.028

E. Nwankwo, TrustGod John

{"title":"Theoretical and experimental assessment of the effect of adhesive bond thickness on the flexural capacity of CFRP strengthened beams","authors":"E. Nwankwo, TrustGod John","doi":"10.22144/ctu.jen.2023.028","DOIUrl":"https://doi.org/10.22144/ctu.jen.2023.028","url":null,"abstract":"Carbon Fiber Reinforced Polymer (CFRP) is a material of choice in the structural strengthening of reinforced concrete (RC) elements. In order to strengthen RC elements, CRFP is bonded externally to RC elements using adhesives. This paper investigates the effect of varying adhesive bond thickness on the moment capacity of CFRP strengthened RC beams in flexure. Thirty-eight (38) Reinforced concrete beams (1.2m length) were cast in the laboratory and their failure loads and corresponding moment capacities obtained when the adhesive bond thickness between the CFRP wraps and RC beams were varied. This paper examines the comparison between flexural moment capacities obtained experimentally and the predicted moment capacities using a theoretical procedure set out in AC440-2R-17 after structural strengthening with CFRP. It was observed that the adhesive thickness had a significant effect on the flexural capacity of strengthened beams. As the adhesive thickness increased beyond certain thresholds, the flexural capacity of strengthened beams reduced. At the optimum adhesive thickness threshold, the ACI 440-2r-17 procedures could predict to high accuracy the moment capacities of strengthened beams.","PeriodicalId":310835,"journal":{"name":"CTU Journal of Innovation and Sustainable Development","volume":"154 1-2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120907485","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

The effect of environmental accounting information disclosure on financial performance of Vietnamese listed industrial firms: The moderating role of Leverage and Big4 环境会计信息披露对越南工业上市公司财务绩效的影响:杠杆和Big4的调节作用

CTU Journal of Innovation and Sustainable Development Pub Date : 2023-07-14 DOI: 10.22144/ctu.jen.2023.027

Thuy an Nguyen, Phuoc Huong Le, Huu Dang Nguyen, Thi Ngoc Tu Luong, M. Ngo

{"title":"The effect of environmental accounting information disclosure on financial performance of Vietnamese listed industrial firms: The moderating role of Leverage and Big4","authors":"Thuy an Nguyen, Phuoc Huong Le, Huu Dang Nguyen, Thi Ngoc Tu Luong, M. Ngo","doi":"10.22144/ctu.jen.2023.027","DOIUrl":"https://doi.org/10.22144/ctu.jen.2023.027","url":null,"abstract":"Environmental Accounting Information Disclosure (EAID) is the most recent novelty in corporate non-financial information reporting practice. This study aims to evaluate the effects of EAID on the financial performance of Vietnamese enterprises. The population of this study comprises listed companies in the industrial sector on the Ho Chi Minh Stock Exchange for the period of five years (2017–2021). The research employed a purposive sampling technique and some analysis techniques, such as content analysis and regression analysis, including Ordinary Least Squares, Fixed Effects Model, Random Effects Model, and Feasible General Least Squares. The final regression results show a positive effect of EAID on profitability. Specifically, as a moderating variable, leverage weakens the relationship when financial performance is measured by ROA and ROE, whereas the quality of financial statements is assured by the Big 4, which strengthens the nexus between EAID and ROE. The study cannot confirm the negative moderating variable of the duality of the CEO position in the relationship. The research gives implications for improving financial performance with increased EAID and some future research directions.","PeriodicalId":310835,"journal":{"name":"CTU Journal of Innovation and Sustainable Development","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126744685","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 different plant growth regulators as the foliar application on growth and flower quality of potted rose (Rosa chinensis Jacq. cv. Nhung) 叶面施用不同植物生长调节剂对盆栽月季生长和花品质的影响。简历。Nhung)

CTU Journal of Innovation and Sustainable Development Pub Date : 2023-07-14 DOI: 10.22144/ctu.jen.2023.019

Thi-Phuong-Thao Pham, Van Hoa Le, T. Le, Van Ban Trinh

{"title":"Effects of different plant growth regulators as the foliar application on growth and flower quality of potted rose (Rosa chinensis Jacq. cv. Nhung)","authors":"Thi-Phuong-Thao Pham, Van Hoa Le, T. Le, Van Ban Trinh","doi":"10.22144/ctu.jen.2023.019","DOIUrl":"https://doi.org/10.22144/ctu.jen.2023.019","url":null,"abstract":"This study was conducted to evaluate the different concentrations of Naphthalene acetic acid (NAA), Benzyladenine (BA) and Gibberellic acid (GA3) as foliar applications on growth and flower quality of potted rose Nhung (Rosa chinensis Jacq. cv. Nhung). The experiment was constructed in a completely randomized design, that included seven treatments, such as control (sprayed water), NAA, BA and GA3 at two different concentrations of 25 and 50 ppm, in six replications, with one plant/pot for each replication. The chemical solutions were applied three times at an interval of fifteen days. The results revealed that some plant growth regulators increased the growth and flowering time of rose cv. Nhung. Using pre-harvest foliar sprays of NAA and BA at 25 and 50 ppm concentrations showed maximum bud diameter, flower diameter and flowering duration as compared with the control treatment. The concentration of GA3 foliar application at 25 ppm increased plant growth (the height of flowering branches and Spad values) without affecting flower quality values and the flowering duration in comparison with the control treatment.","PeriodicalId":310835,"journal":{"name":"CTU Journal of Innovation and Sustainable Development","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126857007","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

An insight into non-English major learners’ task engagement from a sociocultural perspective 社会文化视角下非英语专业学习者任务投入的洞察

CTU Journal of Innovation and Sustainable Development Pub Date : 2023-07-14 DOI: 10.22144/ctu.jen.2023.022

Thinh Nguyen, Quoc Lap Trinh, Mai Anh Pham

引用次数: 0