bluuebunny/crossref_metadata_2025 huggingface dataset:
Awareness, knowledge, attitude, and practices (A-KAP) assessment of the One Health approach in health sciences education webinar series participants in select universities in the Philippines
Authors: Vigilla-Montecillo Kristine R. , Rivera Jules Christian P. , Montecillo Andrew D. , Almonte Maria Kristina G. , Bulao Maria Fe S. , Ong John Daniel P. , Pecundo Domini Theresa M. , Gundran Romeo S. , Salvador Roderick T. , Jamora Renard M. , Tee Michael L.
Published: May 2023

Background

A three-day One Health training program for undergraduate and graduate students, as well as professionals in One Health-related fields, was conducted by the Philippine One Health University Network (PhilOHUN), in collaboration with the Southeast Asia One Health University Network (SEAOHUN), through a webinar series. To measure the impact of the training on the awareness, knowledge, attitude, and practices (A-KAP) related to the topics covered in the program, this study was conducted.

Methods

A quasi-experimental design was employed to evaluate the effect of the One Health training program on the A-KAP of the participants. An online questionnaire developed based on the content of the training modules was administered to the participants before and after the training program. The attendees who accomplished both the pre- and post-training A-KAP assessment questionnaire were included as study participants; of the 225 attendees, 119 respondents qualified. The difference between the pre- and post-training mean A-KAP scores of participants was determined using paired t-test.

Results

Findings showed that the Awareness of the participants (P<0.001) across the topics discussed significantly increased after taking part in the training program. In the Knowledge aspect, however, there was no significant improvement in the general knowledge items score of the participants (P=0.06) but improvements were observed in all the modules included in the training (P<0.05). As for the Attitude and Practices scores of the participants, no significant improvements were observed (P>0.05) after taking part in the training.

Conclusions

The significant differences in awareness and knowledge suggest that the training modules contain relevant topics, which were effectively transmitted during the program. For Attitude and Practices, it may be premature to determine the impact of a single activity, although it is expected that these will change over time. Nevertheless, the training program can be used as a springboard for introducing One Health concepts to a wider audience and a continuing initiative to influence the development of appropriate attitudes and practices for current and future One Health practitioners.
Didácticas virtuales en educación superior
Authors: Muñoz-Murcia Nataly Marcela , Gómez-Contreras Jennifer Lorena , Camargo-Mayorga David Andrés
Published: May 2023

El presente artículo tiene como objetivo presentar el análisis documental acerca de las didácticas virtuales en educación superior, para esto se analizan 60 artículos de investigación, desde un enfoque cualitativo por medio del uso del Software de análisis documental Nvivo 12 plus, revisando categorías de enfoque metodológico y pedagógico. Esta investigación se desarrolló para los programas de Contaduría Pública presencial y a distancia de la Universidad Militar Nueva Granada (Bogotá, Colombia) en el año 2019. Se concluye que las estrategias didácticas propias de la virtualidad están siendo analizadas en su mayoría por investigaciones que se centran en la modalidad presencial y que a la par de las perspectivas constructivistas estas estrategias proponen nuevos enfoques pedagógicos como el Blended Learning.
Efficacy of Ipomoea batatas L. anthocyanin in reducing mammary Malondialdehyde levels in female rats exposed to tobacco smoke
Authors: Marini Atika Rahman  , Astika Gita Ningrum  , Baharika Suci Dwi Aningsih  , Syahrida Wahyu Utami  , Retty Ratnawati  , I Wayan Arsana Wiyasa  , Linda Purwaningsih  , Renata Alya Ulhaq
Published: May 2023

Objectives: Tobacco smoke is one source of free radicals that can enter the body through the respiratory tract and circulate through the bloodstream to reach all organs in the body. Purple sweet potato (Ipomoea batatas L.) anthocyanin is a potentially powerful antioxidant that reduces free radicals. This study aims to demonstrate that purple sweet potato anthocyanin can reduce mammary gland malondialdehyde concentrations in female white rats (Rattus norvegicus) exposed to tobacco smoke. Methods: This was experimental research with a randomized post-test control group. Thirty female white rats were used in this study. These samples were then divided into two control groups (negative control group - no exposure to tobacco smoke and anthocyanin; positive control group - exposure to tobacco smoke only -) and three exposure groups of exposure to cigarette smoke at a rate of two sticks/day and variety Anthocyanin doses for eight weeks. The malondialdehyde content of the mammary gland was measured spectrophotometrically. Results: The result showed that the higher dose of Ipomoea batatas L anthocyanin administered, the lower the MDA level in the breasts of rats exposed to cigarette smoke (ANOVA test, p-value = 0.002) Conclusions: Ipomoea batatas L. anthocyanin can decrease the concentration of mammary gland malondialdehyde in female rats exposed to tobacco smoke.
Prevalence and some associated symptoms of mosquito coil usage in Yenagoa Bayelsa State Nigeria
Authors: Emmanuel Tonbra Egoro  , Ferdinand Chukwuma Ezeiruaku  , Godwin Ikhide Ilegbedion
Published: May 2023

Mosquito coils are insect repellents that are used mostly in Africa, sub-Sahara and some parts of the globe. This study was aimed on prevalence and some associated symptoms of mosquito coil usage in Yenagoa Bayelsa State Nigeria. One thousand four hundred and fifty one apparently healthy male and female volunteers within the age range of 20-50 years were recruited for this study after obtaining oral informed consent from each of them.. Among these volunteers, 527, 492 and 432 were from Agudama-Epie, Ede-pie and Akenfa communities in Yenagoa respectively. The data obtained from these volunteers via questionnaires which were analyzed using descriptive statistic of frequency and percentage revealed 403 (76) %, 365 (74) % and 324 (75) % as users of Read A Dream mosquito coil in the respective communities with 286 (71) %, 266 (73) % and 227 (70) % being unemployed while 264 (66) %, 247 (68) % and 203 (63) % are with no academic and/or professional qualifications. Symptom of throat irritation was manifested in 271 (67) %, 262 (72) % and 253 (78) % of these volunteers in the three communities respectively as compared with other symptoms such as cough, eye irritation, skin irritation, catarrh and headache which were not manifested. In conclusion, a high prevalence of Read A Dream mosquito coil usage was recorded in the three respective communities with unemployed apparently healthy volunteers as well as those with no academic and/or professional qualifications accounting for significant percentage while throat irritation was the only symptom manifested. It is therefore recommended that only mosquito coils certified safe for use by an appropriate authority should be sold in the market and used in accordance to prescribed safety precautions
Market Analysis of ITC products in rural areas with special reference to Nainital District
Authors: Uma Raikhola  , Pawan Singh Raikhola
Published: May 2023

ITC was established on August 24, 1910, as the Imperial Tobacco Company of India Ltd. in Kolkata, and its name changed to I.T.C. Ltd. in 1974. Finally, it changed its name to ITC Ltd. in 2001. ITC has a diversified presence in tobacco, foods and confectionery, apparel, packaging, and hotel business. They entered the food business in 2001 and launched the Kol brand under the Ready to Eat segment. They expanded with brand launches in the confectionary, staples, and snack food segments. The study was conducted in the Bhimtal, Betalghat, and Ramgarh blocks of Nainital district. The study is totally based on the primary data. The study found that there is a huge market and that there is scope for improvement. The organization has the capacity to give good business to ITC FMCG products, and more sales could be achieved if the services given by distributors are improved, more awareness of the products is made amongst the consumers through the advertisements, and if the company comes with new advancements in some of their products where they are lacking.
The social discrimination of woman roles in the Tarian Bumi and Kenanga novels by Oka Rusmini and its relevance to Indonesian learning for twelfth graders at science 1 class SMA negeri 2 Gorontalo (Marxism-literature sociology approach)
Authors: Sinta Dewi Ginoga  , Ellyana Hinta  , Muslimin
Published: May 2023

Discrimination is differentiating treatments given to citizens. This research explores the social discrimination of Balinese woman figures in Tarian Bumi and Kenanga, two novels by Oka Rusmini. The research approach was descriptive-qualitative. The results showed that six data were categorized in the upper- and lower-class sections, two data were in the country class section, five data were in the ideology section, and 12 data were in the individual section in Tarian Bumi and Kenanga. The relevance to learning was educational values in the novel, e.g., religious, moral, social, and cultural values.
Bio-purification of Ascaris lumbricoides ova in a transformed Echinochloa pyramidalis wastewater treatment filter plant in the city of Yaounde (Cameroon)
Authors: Francine Victorine Ngono Ngono  , Synthia Danielle Atchoukeu Yonguy  , Aghaindum Gideon Ajeagah
Published: May 2023

The reuse of wastewater is widespread across the globe, especially in regions with water scarcity. Recycled water can be utilized in irrigation but if not treated effectively can pose risk for public health owing to the pathogens present in the recycled water used for irrigation Ascaris lumbricoides is a major soil-transmitted helminth that is highly infective to humans. The ova of A. lumbricoides are able to survive wastewater treatment, thus making it an indicator organism for effective water treatment and sanitation. Hence, Ascaris ova must be removed from wastewater matrices for the safe use of recycled water. The results of the observations of Ascaris lumbricoides eggs indicate a general density of 88 ± 72 ova.l-1. The highest density was 338 ova.l-1 obtained in fat and oil removal basin during the LRS. Although a density of 24 larvae/L was detected at the outlet. Overall, larvae decreased at the secondary treatment level with a general purification yield of 85%.
Induction effect of Nigella sativa combined with bovine bone graft on osteoblast and osteoclast formation in post extraction tooth socket
Authors: Utari Kresnoadi  , Rifqi Hanindya Wicaksono  , Agus Dahlan
Published: May 2023

Background:. Poor healing of alveolar bone after traumatic tooth extraction procedure increases the difficulty of treatments, especially in the field of prosthodontic. Therefore, adequate socket preservation of alveolar bone is beneficial. Nigella sativa (NS) and bovine bone graft (BBG) is expected to reduce osteoclast and increase osteoblast as a marker of alveolar bone healing. Purpose: This study was aimed to observe the effect of NS combined with BBG on osteoclast and osteoblast count on post-extraction socket of alveolar bone. Methods: Lower incisors of fifty-six Cavia cobaya were extracted and divided into four groups. First group was control group, second group was given BBG, third group with NS, and fourth group with NS and BBG combination. Cavia cobaya was terminated on the 7th and 14th day for further analysis of alveolar socket bone. Histological examinations of osteoclast & osteoblast were measured with a 400x magnification light microscope. One-way ANOVA and Tukey HSD tests were performed to analyze the data statistically. Results: There was a significant difference in osteoclast and osteoblast count between the groups. Both lowest mean of osteoclast and highest mean of osteoblast was found in the NS-BBG combination group on 7th and 14th day. Conclusion: The combination of NS and BBG can effectively decrease osteoclast and increase osteoblast count on post-extraction socket of the alveolar bone.
Analisis Struktural Puisi Sendiri Karya Abdul Hadi W.M.
Authors: Aziza Aulia Azzahra
Published: May 2023

This study aims to describe the physical structure and inner structure of the poetry contained in the collection of poems by Abdul Hadi W.M. The method used is descriptive in the form of qualitative. The approach used is structural analysis. Based on the results of the study, it was found several things related to the physical structure, namely, the Poetry of the Self by Abdul Hadi W.M.  using a physical structure.  In the inner structure his feelings show a sense of loneliness.  The tone or attitude that is shown through straightforward words is anger. The message does not have to vent emotions by harming others, we can be alone to calm the mind.
Nilai Nilai Akhlak Dalam Kepribadian Khalifah Umar Bin Khattab Pada Materi Akidah Akhlak Dan Penerapannya Pada Akhlak Siswa Di MTSN 2 Kota Pariaman
Authors: Tutia Ananda Putri  , Darul Ilmi  , Alimir Alimir  , Jasmienti Jasmienti
Published: May 2023

Akhlak merupakan suatu sikap tingkah laku baik atau buruk yang tertanam didalam jiwa seseorang. Akhlak terbagi menjadi dua yaitu akhlak terpuji dan akhlak tercela. Agama Islam menyuruh umatnya untuk senantiasa berbuat baik terhadap sesama. Akhlak dapat dipelajari melalui keteladanan yang dapat ditiru dari tokoh-tokoh yang memiliki kepribadian yang mulia seperti kepribadian khalifah Umar bin Khattab. Khalifah Umar bin Khattab merupakan sahabat nabi yang memiliki watak keras sebelum masuk Islam, namun setelah masuk Islam berubah menjadi pribadi yang taat kepada Allah dan memiliki pribadi yang mulia. Penelitian ini dilatar belakangi oleh kurangnya rasa menghargai dan menghormati pada diri seorang siswa serta kurangnya sikap jujur dan sikap sopan santun pada diri siswa. Adapun siswa kelas IX Madrasah Tsanawiyah mempelajari tentang materi keteladanan Khalifah Umar bin Khattab, yang mana kepribadian Khalifah Umar bin Khattab dapat diteladani dan dicontoh oleh siswa. Tujuan penelitian ini adalah untuk mengetahui nilai-nilai akhlak dalam kepribadian khalifah Umar bin Khattab pada materi Akidah Akhlak dan penerapannya pada akhlak siswa di MTsN 2 Kota Pariaman. Penelitian ini menggunakan pendekatan deskriptif kualitatif. Teknik pengumpulan data yang digunakan adalah menggunakan observasi, wawancara dan dokumentasi. Sedangkan teknik analisis data yang digunakan adalah reduksi data, penyajian data dan penarikan kesimpulan. Berdasarkan temuan penelitian dapat dijelaskan bahwa siswa sudah menerapkan dan meneladani kepribadian Khalifah Umar bin Khattab yang meliputi sikap takut akan azab Allah swt, sikap rendah hati, sikap santun, sikap dermawan dan sikap sederhana. Penerapan nilai-nilai akhlak pada siswa dilakukan dengan bimbingan dan arahan dari guru serta pembiasaan pada diri siswa dalam kehidupan sehari-hari. Maka dapat disimpulkan bahwa siswa sudah menerapkan nilai-nilai akhlak dalam kepribadian Khalifah Umar bin Khattab seperti sikap takut akan azab Allah swt, sikap rendah hati, sikap santun, sikap dermawan dan sikap sederhana.
Pacing Induced Cardiomyopathy: What is The Solution?
Authors: Butarbutar Maruli Wisnu Wardhana , Raharjo Sunu Budhi
Published: May 2023

ABSTRACT

Background

Right ventricular pacing is associated with adverse outcome including increased risks of cardiovascular morbidity and mortality. RV pacing causes abnormal ventricular activation results in an inefficient contraction pattern with ventricular dyssynchrony and loss of myocardial work that may lead to LV dilation, systolic dysfunction, and clinical HF. Pacing induced cardiomyopathy (PICM) is caused by chronic and high burden RV pacing that may occur several months or years after pacemaker implantation.

 

Objective

To present a case of pacing induced cardiomyopathy (PICM) managed by CRT-P implantation.

 

Case Illustration

A male, 56 years old, was referred from dr. M. Djamil General Hospital with CHF Fc II-III, s/p PPM DDDR due to high degree AV block (2016) and history of failed CRT-P implantation (2018). He complained DOE (+), PND (+) and OP (+) since April 2017. Physical examination revealed pansystolic murmur grade 2/6 at apex, no rales and no oedema at both legs. ECG showed pacing rhythm and intrinsic rhythm was type 2 second degree AV block and RBBB with QRS duration 150 ms. Echocardiography showed global hypokinetic and dilated LV (LV EDD 71 mm, LV ESD 63 mm) with progressively reduced EF 38% à  33% (Simpson), functional moderate MR and mild TR. CAG showed non-significant coronary artery stenosis with 20% stenosis at distal LAD. Patient was diagnosed as pacing induced cardiomyopathy (PICM). At catheter laboratory, there was stenosis of left subclavian vein. His-Bundle pacing (HBP) was planned at first, however CRT-P with biventricular epicardial pacing was then performed in which LV lead was inserted through right axillary vein. During follow up at general ward, ECG showed biventricular pacing rhythm. There was no signs and symptoms of heart failure. Patient was hospitalized for 3 days and then discharged in a good condition.

 

 

 

Summary

We reported a case of pacing induced cardiomyopathy in male patient 56 years old. Pacing induced cardiomyopathy is a complication of high burden RV pacing. Options to treat PICM once it has developed, or to prevent it from developing in the first place, may include conduction system pacing (e.g.: HBP) or CRT-P implantation.
A Clinical Profile of Acute Coronary Syndrome Patients in Kupang
Authors: Adam Aditya Angela , Tiluata Leonora Johana , Yunita Lowry , Putra Magma Purnawan , Wilujeng Niva , Homalessy Leonita Vivian , Hutabarat Daniel Christian Fernandez
Published: May 2023

Background: Cardiovascular diseases (CVDs) have been the leading cause of global deaths over the years. In Indonesia, coronary heart disease (CHD) is the most common CVDs, responsible for 29% of all deaths in 2017. East Nusa Tenggara is one of the provinces in Indonesia with the highest prevalence of CHD, which corresponded with growing cases of acute coronary syndromes (ACS). Therefore, we develop a registry to obtain patients' profiles as a basis for strategy development in ACS management.

Methods: A retrospectively observational study was conducted on all patients who presented with ACS between January 2019 and September 2020 at a general hospital in Kupang, East Nusa Tenggara.  Data collected include demography, patient awareness and transfer history, risk factors, physical findings, diagnosis, workup, treatment, and mortality.

Results: A total of 282 patients with ACS (STEMI, 41,2%; NSTEACS, 58,8%) were included in this study. Most patients were male with a mean age of 58,2 ± 12,2 years and normal BMI (32.6%). Nearly 50% of all ACS patients have one or more comorbidities, followed by relatively low adherence to therapy. Half of the patients were referred, but only 16,9% of patients arrived at the first medical facility less than 1 hour after onset. Patients with NTSEACS had more risk factors than patients with STEMI. The median LOS was five days (range, 1-17 days) with 2,8% in-hospital death. The presence of patient and system delay might contribute to the low number of STEMI patients who received reperfusion therapy.

Conclusions: This research serves as the primary data for the improvement of acute coronary syndrome management in Kupang and East Nusa Tenggara.
Determining Tendency Levels and Opinions of Secondary School 12th Grade Students on Private Tutoring
Authors: TURKAN Azmi , ÇELİKÖZ Nadir
Published: May 2023

The purpose of this study is, based on various variables, to determine differentiation in private tutoring tendencies of 12th grade students and their opinions about private tutoring. Mixed method sequential explanatory design was used in this study because both quantitative and qualitative methods were included. Collecting qualitative data depends on quantitative data. Thus, explanatory sequential design, one of the mixed methods, was used. The quantitative study group consists of 717 students in 12th grade secondary school studying in different schools types in İstanbul. Quantitative data were collected through stratified sampling method. The qualitative study group consists of 11 students selected according to quantitative data. The maximum variation sampling method was preferred for collecting qualitative data. The “Private Tutoring Tendency Scale” was used for collecting quantitative data; the semi-structured interview form developed by the researchers was used for collecting qualitative data. The SPSS 22.0 software was used in analyzing the quantitative data. Microsoft Excel and Nvivo 8 software were used for qualitative data analysis. The content analysis was preferred for conducting qualitative data analysis. According to the study results, it was observed that; there is significant difference in private tutoring tendency levels of the participants with respect to the gender and private tutoring experience variables. When qualitative findings are considered, it is evident that opinions of the participants are mainly gathered under the titles; reason for private tutoring tendency, general opinions on private tutoring and methodological opinions on private tutoring.
Expatriate Non-native English-speaking Teachers’ Challenges and Coping Strategies in the Turkish EFL Classroom: A Qualitative Study
Authors: ALTAAİ Wurood Hashim Sahib , GOKGOZ-KURT Burcu
Published: May 2023

The global demand for teachers of English has led to an escalation in the number of non-native English speakers traveling overseas to teach English. Although teaching English abroad is typically associated with native English-speaking teachers hailing from inner-circle countries, it has also become commonplace to see non-native English-speaking expatriate teachers being hired. Yet, studies probing into expatriate non-native English-speaking teachers’ experiences have been sparse, particularly in the context of Turkey. This study endeavors to explore the challenges and coping strategies of expatriate non-native English-speaking teachers who worked in private schools and language programs in Turkey. To collect data, semi-structured interviews were conducted, and the analysis revealed that teachers faced several obstacles, including linguistic, cultural, and pedagogical challenges. Nevertheless, they managed to surmount these obstacles by acquiring proficiency in the local language, fostering intercultural awareness, and acquainting themselves with the education system. In light of the findings and the relevant literature, suggestions and implications are discussed for potential expatriate teachers intending to work in Turkey and other stakeholders.
Analisis Multimodal pada Teks Iklan untuk Mengidentifikasi Aspek Ketulusan Iklan
Authors: Hoon Lee Seung , Syihabuddin Syihabuddin , Sudana Dadang , Gunawan Wawan
Published: May 2023

This study aims to analyze the sincerity aspect of Indonesian and Korean advertisements through multimodal analysis. This study uses a content analysis research method using the FCB Grid Model on several products, namely fast food, tobacco, and telecommunications. The selection of ad samples was carried out based on the FCB Grid Model. The results of the study show that some products such as tobacco and fast food are included in the category of products that involve low emotions and thoughts when consumers consider these products. However, telecommunications products fall into the category of products that involve high rational thinking skills, thus requiring serious consideration from consumers. Other findings show that there are several semantic and pragmatic expressions that make consumers confused in choosing a product. The most frequent violations found in products are false expressions and explanations that lead consumers astray. In addition, other violations are expression omissions, exaggerated expressions, fictitious, and omission of important information, thus making consumers feel lost in choosing products.
Monolithic Structure Technology: A New Construction Process to Enhance Traditional Construction
Authors:   Ibn Zohr University, Belabid Abderrahim , Akhzouz Hajar ,   Euromed University of Fez, Elminor Hannane ,   Universiapolis University of Agadir, Elminor Hassan ,   Ibn Zohr University
Published: May 2023

Let's imagine a low clay soil or aggregates, lime or cement and fibers; how can we create value with these three materials or rather how can we achieve an affordable, sustainable building with low environmental impact that requires less maintenance. The elimination of steel increases the life span of buildings by avoiding the corrosion of steel through the phenomenon of the concrete carbonation. So what is the proposed mix and with what mode can we build. The objective of this paper is to propose and evaluate a new construction technology: the technology of monolithic structures applied to low-rise buildings. This technology focuses on the valorization of local materials through a modern construction process. Thus, in this paper describestheprocess, propose and analysisthe adequate models in materials and architecture. Finally,itanalyze the feasibility, the ecological and economic profitability of this technology. This construction process uses the same ingredients as traditional buildings, but with innovative approaches in design and execution.
Flexural Behaviour of Reinforced Concrete Beams using Alkali Activated Binders
Authors:   NIT Jamshedpur, Paswan Rajesh Kumar , Kumar Virendra ,   NIT Jamshedpur, U. Kapure Gajanan ,   Ferro Alloy Minerals Research Group, Research & Development, Murthy Y. Rama ,   Ferro Alloy Minerals Research Group, Research & Development
Published: May 2023

This article discusses several different percentages of alkali activators that can be used in place of conventional cement with ground granulated blast furnace slag (GGBFS) resulting in alkali activated binder (AAB). They are labelled as G10 percent, G7 percent, G6 percent, and G5 percent, respectively, since they include 90 percent, 93 percent, 94 percent, and 95 percent of GGBFS, as well as 10 percent, 7 percent, 6 percent, and 5 percent alkali as an activator, respectively. A comparison of specimens formed of reinforced beams utilising alkaline binders and conventional cement is shown in this study. One of the six varieties of reinforced concrete beams is composed of Portland slag cement, four of the beams are cast with varied chemical concentrations of AAB concrete, and the last beam is produced with Ordinary Portland cement. They are examined using four-point bend test. The behaviour of reinforced concrete beams composed of AAB and conventional cement is analysed in this study, and the crack types and ultimate loads of failure are also demonstrated. It was established that the combination of alkali activated binders known as G10 percent was the most successful one since it led to good performance when compared to the OPC concrete.
Factors Affecting the Success of PPP Transport Projects in Vietnam
Authors:   University of Transport Technology, Tran Kien Trung , Nguyen Nguyet Minh ,   University of Transport Technology
Published: May 2023

Transport infrastructure plays an important role in the development of each country, especially for developing countries like Vietnam. To promote the development of transport infrastructure as well as to deal with some challenges such as budget and project efficiency, the Public Private Partnership (PPP) model is a very proper choice. The factors that determine the success of PPP transport projects are important issues to be analyzed in different countries. The article aims at identifying the factors and the extent of their influence on the success of PPP transport project in Vietnam. Research data are collected from surveys with questionnaire to capture related partners' perceptions of success factors. The influence level of the factors is assessed on a 5-point Likert scale (from 1 -very low to 5 -very high). A total of 92 questionnaires were collected and analyzed using Statistical Package for the Social Sciences (SPSS) software to rank the influence of success factors. Research results show that “Adequate and transparent legal framework”, “State and private commitments and responsibilities”, “Transparency in bidding”, “State support policy” and “Good governance” are the top five factors determining the success of a PPP transport project in Vietnam. The new findings of the study help the State and investors better understand the factors determining the success of PPP transport projects in Vietnam in order to make appropriate decisions on policies.
Numerical Studies on Flexural Behaviour of Carbon Fiber Reinforced Polymer-Wrapped Reinforced Concrete Beam
Authors:   Sathyabama Institute of Science and Technology, Geetha J. , Padmapriya R. ,   Sathyabama Institute of Science and Technology
Published: May 2023

Construction faults and poor maintenance of concrete buildings become crucial as a result of heavy loading. Fibre reinforced polymer increases load bearing capacity, improves ductility, and decreases degradation damages. The researchers are looking for new and novel ways to strengthen beams since traditional techniques of reinforcement have limits that must be addressed. Due to its better qualities, the technology of wrapping a Reinforced Concrete (RC) beam with composite material has become popular and widely employed in structural applications. FRP has a lower labour cost and is a simple technique to reinforce buildings for a more effective solution. The experimental and analytical work was done for both conventional and CFRP strengthening with various intervals, such as CFRP wrapped with a 100mm interval, CFRP wrapped with a 200mm interval, and CFRP wrapped without an interval, with improved results in deformationand stress analysis. All of the experimental data were compared to the calculated analytical values. When CFRP is used on a beam, it enhances its strength, load bearing capability, and ductility.
Sustainable Client-Driven Marketing Strategies of Quantity Surveying Firms in the Built Environment
Authors:   Obafemi Awolowo University, Ebunoluwa Esther Ilori , Ojo Grace Kehinde ,   Obafemi Awolowo University
Published: May 2023

Marketing strategy had been understood to mean the way and manner in which a firm create and achieve a profitable customer relationship in a competitive environment. However, not all strategies could capture the attention of clients in such a competitive business environment. Therefore, this study seeks to identify marketing strategies that drive clients in engaging the services of quantity surveying firms for the sustainability of the firms in the built environment. The opinions of 46registered quantity surveying firms in Lagos, Oyo and Ondo States on the usage and effectiveness of sustainable customer-driven marketing strategies were obtained through a well-structured questionnaire. The surveyed respondents’ quantity surveying firms were randomly sampled in the selected locations. Mean Response Analysis (MRA) and Analysis of Variance (ANOVA) were used to analyze the data collected. Findings show that professional-client relationship (MS=4.13) is the most frequently used (MS=4.17) and effective (MS=4.13) marketing strategy that drives clients and sustains the quantity surveying firms. This is closely followed by follow-up and expanding service to existing clients. Furthermore, the view of the respondents on the effectiveness of professional-client relationship (p-value=0.104) and follow-up (p-value=0.157) marketing strategies were the same at P>0.05. However, a significant difference existed in the view of respondents on one marketing strategy i.e. expanding service to existing clients (p-value=0.019). The study concluded that professional-client relationship and follow-up are the strategies that drive the attention of the clients mostly in the study area; this increases the chances of firms’ sustainability in the built environment. The implication of this is that quantity surveying firms will much more survive in the competitive environment using these highly effective sustainable client-driven marketing strategies.
Construction and Demolition Waste Management in Urban Transformation: A Case Study for Performance Evaluation
Authors:   Yasar University, Yazgan Ogulcan , Ozturkoglu Yucel ,   Yasar University, Ozkan-Ozen Yesim Deniz ,   Yasar University
Published: May 2023

Due to the decreasing resources in the world, different recycling applications in different sectors are gaining more importance. Urban transformations initiated especially for earthquake remnants and old buildings provide many advantages for the construction sector. Recycling of valuable materials from the wastes from each demolished construction site is very important in terms of costs. It is also important to analyse the effectiveness of both public and private companies to compare different approaches and illustrate best practices. From this point of view, this research has been carried out on the recycling of construction and demolition wastes in Turkey and the performance of companies dealing with this business. Analytical hierarchy process (AHP) and gray relations analysis (GRA) will be applied for the evaluation phase. The criteria will be analysed through AHP and the connectionbetween companies will be determined with the GRA method. According to the results, potential improvement opportunities will be identified to increase the performance and competitiveness of construction excavation companies. This will also allow the findings to serve as a potential model for other construction companies operating under different contingency factors, as well as presenting the list of criteria that construction companies should pay attention for performance evaluation.
Analyzing The Role of Migration Phenomenon on The Human Development Index of The City, Case Study: Bojnord City
Authors:   University of Bojnord, Sedaghati Atefeh , Talebkhah Hamid ,   Shahid Beheshti University, Omrani Sogand ,   Tehran University
Published: May 2023

One of the UN's Human Development Reports on Migration shows that the negative impact of migrants on host communities is inconsistent with reality. The main message of the Human Development Report is that the benefits of human development can be reaped by reducing barriers to mobility and improving the treatment of migrants. The present study is done, using a descriptive-analytical method of applied studies. This study tries to calculate and analyze the Human Development Index (HDI) during the official general census of the country in 2006, 2011 and 2016 and do a comparative study among "population of the province", "urban areas of the county" and "immigrants" in the county of Bojnord, using two possible methods of calculation and analysis of this index (Natural and geometric method in addition to changes in the type of data in accordance with the old and new method proposed by the United Nations and contained in valid scientific texts in calculating the human development index). According to the findings, migration has not reduced the human development index, and has also grown at all three levels. On the other hand, the results show that migration is not necessarily associated with negative consequences and, conversely, has been able to accelerate development in the host society, and this is because the nature of modern migration is more related to improving one's position in society and human mobility than simply respond to the basic instincts of survival. The index calculated for immigrants in 2016 (0.752) was more than the other two periods (0.744 and 0.7); While the number of immigrants entering the urban areas of the county was less than the previous two periods. In general, the development index of 2011 and 2016 is more than 2006, due to the opportunities created by the centralization of Bojnord in 2005.
Seismic Performance of X-Braced Frame with Vertical Link Beam (XBF-VLB)
Authors:   Islamic Azad University, Nouria Pouria
Published: May 2023

X-braced Frames(XBFs), one of the most prevalent lateral load-resisting structures, has low energy dissipation and ductility. This study investigates the behavior of a single-story, single-span X-braced frame equipped with a Vertical Link Beam (XBF-VLB) under monotonic and cyclic loading using the nonlinear finite element technique in the Abaqus software and validated with experimental data. The VLBs were positioned where the bracing members were connected to the beam in double, single, and wide forms. The impacts of the length, depth, and the number of links, stiffeners, and other VLB section parameters were assessed. The A36 steel ductile damage method (DDM)estimated the damage of the main structural members, such as bracing members. The results revealed that X-braced frames with single, double, and wide form Vertical Link Beams (XBF-VLBs) performed better under cyclic and monotonic loading than X-braced frames without Vertical Link Beam (XBFs). Likewise, because the bracing members did not buckle inthe XBF-VLB specimens, there was no rapid loss in the stiffness and strength of the X-braced frames. Also, theresults of the cyclic loading of the XBF-VLB specimens demonstrated that no rapid drop in stiffness or strength was detected due to no buckling of the bracing members under the cyclic loading, as was the case with the monotonic loading. Additionally, compared to the XBF specimens, the drifts corresponding to the first plastic hinges of the XBF-VLB specimens show that the bracing members experienced nonlinear deformation at greater drifts, with the plastic hinges created in them at bigger displacements. According to the cyclic loading results, the VLB also reduced Von Mises stress and damage in the bracing members of the XBF-VLB specimens. Moreover, theultimate von Mises stress reduction in the bracing members of the models with VLBs equals 33%, which prevents buckling.
Probabilistic of in Situ Seismic Soil Liquefaction Potential Based on CPT-Data in Central Jakarta, Indonesia
Authors:   Politeknik Negeri Jakarta, Maha Agung Putera Agung , Sultan Ramlan ,   Politeknik Negeri Ujung Pandang, Idris Muhammad ,   Politeknik Negeri Ujung Pandang, Sudjianto Agus Tugas ,   Widyagama University, Ahmad Mustaffa Anjang ,   Universiti Tun Hussein Onn Malaysia, Rouf Hasan Muhammad Fathur ,   Politeknik Negeri Jakarta
Published: May 2023

Jakarta City located at the northern part of Java Island has a potential liquefaction since there are many soil layers as a qualified as liquefaction susceptible, such as: silty sand and sand. The effects of liquefaction occurrence on saturated silty sand and sand during earthquakes can have potential to damage structure. A case history using CPT-data randomly taken from Central Jakarta region was compiled and back analyzed to investigated probability of liquefaction. The present study focuses on the probabilistic evaluation of liquefaction potential of this region, considering silty sand and sand layers related to CPT soundings. Silty sand was found as a thin layer or a lens between silty clay, silt and clay which was classified as a soft soil layer, and the sand layer is mostly found as a hard bottom layer. Normalization of tip CPT resistance (qc) corrected by an effective overburden stress was not only used to thick layer of silty sand and sand, but also it was applied to determine liquefaction potential existed as the “thin” layers. The silty sand and sand layers have a probability of liquefaction (PL) between 5 to 50% for magnitudes and distances of 500 years with PGA less than 0.42 gal.
Synthesis and Applications of Organotin(IV) Compounds: Mini Review
Authors:   Al-Nahrain University, Naoom Noor , Yousif Emad ,   Al-Nahrain University, Zainulabdeen Khalid ,   Al-Nahrain University, Salman Israa ,   Al-Nahrain University, Amalia Husnun ,   Universitas Trisakti, M Yusop Rahimi ,   Universiti Kebangsaan Malaysia, Redwan Amamer ,   Bani Waleed University, Bufaroosha Muna ,   United Arab Emirates University
Published: May 2023

Organotin(IV) compounds have seen a marked increase in industry utilization over the years and exhibited enormous economic benefits as well as environmental costs due to their numerous industrial, medical, and agricultural uses and other applications. The present review is a continuation of aseries of reviews on the use of organotin(IV), chemicals, synthesis, characteristics and geometry as well as the industrial and biological applications.
Radiation Shielding Properties of Synthetic Ca-Al2O3 Polymer Based Composites
Authors:   University of Ilorin, A. Salawu Mufutau , K. Ayinla Ibrahim ,   University of Ilorin, C. Ezike Sabastine ,   Modibbo Adama University of Technology, O. Bello Mojeed ,   University of Ilorin, O. Usman Usman ,   University of Ilorin, O. Yussuf Abdulmojeed ,   University of Ilorin, A. Gbolahan Julius ,   University of Ilorin, B. Alabi Aderemi ,   University of Ilorin
Published: May 2023

The optical and radiation shielding capabilities of Ca-Al2O3polymer-based composites were explored by combining synthesized aluminum oxide (Al2O3) with calcium (Ca) obtained from different shells. The obtained powders were dispersed into polymeric materials in a ratio of 2:1 via the melt-mixing process and then cast in a 10cm x10cm mold with a thickness of 10 mm and allowed to set at ambient temperature. The X-ray transmission through the composite samples was investigated using a well-collimated point source, and a linear attenuation coefficient was estimated. X-ray fluorescence results revealed calcium contents of 32 %, 37 %, and 34 % for snail shells, seashells, and periwinkle shells, respectively. The X-ray diffraction result confirmed the Al2O3polymorphs at approximately 32oand 57oand the aluminum phase at 46o. The X-ray photon transmittance of the composites is quite low at 40 keV to 60 keV and comparatively higher at 100 keV to 200 keV. For Ca-Al2O3polymer-based composites with calcium contents sourced from seashells, periwinkle shells, and snail shells, the maximum linear attenuation coefficients were 1.0 cm-1,0.79 cm-1, and 0.65 cm-1, respectively. The half-value layer (HVL) and relaxation length of all the samples under investigation decreased abruptly at 40 keV and 60 keV and grew linearly as the energy increased from 100 keV to 200 keV. A Ca-Al2O3polymer-based composite with calcium contents sourced from seashells was found to have higher x-ray attenuating characteristics than other composites.
Utilization of Oyster Shell Powder for Hydration and Mechanical Properties Improvement of Portland Cement Pastes
Authors:   National Research Centre, Darweesh H.H.M.
Published: May 2023

Supplementary cementitious materials (SCMs) are usually partially substituted at the expense of Portland cement (OPC) to reduce, as possible, the CO2emission. There has been limited studies involved the use of Oyster shell (OS) to replace OPC. The current study investigated the properties of a ternary base batch containing Oyster shell powder (OSP).The ternary cement batch was consisting of OPC, granulated blast furnace slag (GbfS) and metakaolin (MK). The results indicated that the water consistency and setting times (initial and final) are gradually increased. The water absorption and total porosity are decreased, while the bulk density and combined water content increased. This behaviour continued up till 16 % OSP content, but then reverse was obtained with any further increase of OSP content. The same trend was achieved with the compressive strength. The addition of OSP often formed mono-and/or hemicarbonate instead of monosulfate because it is mainly composed of carbonates, and moreover it is stabilizing the formation of trisulphate or ettringite in the hydrated samples. The decrease is not the decrease of free lime contents proved that the OSP is a pozzolanic material. This was confirmed by FT-IR spectra. From the results it could be concluded that the optimum content of OSP was at most 16 %.
Analyzing the Heat Transfer Rate of Nanostructures of Poly (Methyl Methacrylate) / Al2O3 Utilizing Molecular Dynamics Simulations
Authors:   University of Babylon, Al-Timimi Zahra , J. Tammemi Zeina ,   University of Babylon
Published: May 2023

The main methods for preventing fires are physical, chemical, or a combination of the two. One of the main thermophysical characteristics that connect the chemical structure is thermal diffusivity. The relationship between heat transport as well as heat resistance has been thoroughly established in the literature. Heat transmission can also be connected to various fire-retardant characteristics, like maximal heat release or time to ignite, which rank among the most crucial factors in defining the potential fire danger of a specific material. The thermal stability, as well as fire-retardant qualities of polymers, are enhanced by metal oxides. In the present investigation, simulations of molecular dynamics constructed using the single atom approach was used to examine the consequence of Al2O3nanoparticles on thermal transfer of isotactic polymethyl methacrylate. Capacity, density, and thermal transfer were studied in the 300-700 K range to examine the heat transfer rate of poly (methyl methacrylate) besides poly (methyl methacrylate)/Al2O3nanocomposite. It is possible to calculate heat capacity using fluctuating characteristics. Conductivity was calculated through a non-equilibrium modeling simulation using Fourier's law. The thermal diffusivity of the poly (methyl methacrylate) with the thermal conductivity is increased by over ten times by the alumina nanoparticles, which also enhances the Tg by around 10 K The results show that the Al2O3nanoparticles increase a transition temperature of glass; conductivity, in addition diffusivity of the poly (methyl methacrylate) while decreasing the heat capacity.
Multicomponent Biosorption of Heavy Metals Using Fluidized Bed of Algal Biomass
Authors: Sulaymon Abbas Hameed , Mohammed Ahmed Abed , Al-Musawi Tariq Jwad
Published: May 2023

This paper aims to study the biosorption for removal of lead, cadmium, copper and arsenic ions using algae as a biosorbent. A series of experiments were carried out to obtain the breakthrough data in a fluidized bed reactor. The minimum fluidization velocities of beds were found to be 2.27 and 3.64 mm/s for mish sizes of 0.4-0.6 and 0.6-1 mm diameters, respectively. An ideal plug flow model has been adopted to characterize the fluidized bed reactor. This model has been solved numerically using MATLAB version 6.5. The results showed a well fitting with the experimental data. Different operating conditions were varied: static bed height, superficial velocity and particle diameter. The breakthrough curves were plotted for each metal. Pb2+ showed the largest breakthrough time compared with others, while Cd2+ had the lowest value