scholarly journals Investigation of construction material quality and workmanship defects of RC buildings collapsed and severely damaged in the 6.8 Mw Sivrice, Elazığ, Turkey earthquake, January 2020

2021 ◽  
Vol 54 (3) ◽  
pp. 184-196
Author(s):  
Murat Bikçe ◽  
M. Musab Erdem
Keyword(s):  
Sampling Method ◽  
Construction Material ◽  
Reinforcing Bars ◽  
Judicial Process ◽  
Adverse Conditions ◽  
Emotional Sensitivity ◽  
Earthquake Zone ◽  
Core Extraction

In the Sivrice, Elazığ, Turkey earthquake on January 24, 2020, 41 people lost their lives, more than 1600 people were injured, 672 buildings collapsed, and around 12600 buildings were severely damaged due to poor construction quality. After such devastating earthquakes, damage assessment and forensic investigations are normally carried out quickly for a judicial process, and material qualities are revealed. However, emotional sensitivity of the victims in the earthquake affected zone and disruptions in key lifeline services such as transportation, electricity supply often make these processes difficult. After the Elazığ earthquake, along with the conventional in-situ core sampling method, concrete pieces were collected from columns of collapsed and severely damaged buildings and transported out of the earthquake zone to overcome these adverse conditions. Unlike in the conventional method where the whole sampling process is carried out in the earthquake zone, the core extraction from the transported concrete pieces was carried out outside the earthquake-affected area. The extracted concrete samples were checked for compliance with the prevailing material standards. Moreover, multiple reinforcing bars of various diameters were also extracted and tested to check their compliance with the standards. Besides, the results of examination of the quality of materials and workmanship used in the construction are also discussed, along with the precautions required to minimize fatalities and damage from similar buildings.

scholarly journals Analysis of Gastropod Diversity as a Bioindicator of Waters in Situ Ciburuy Padalarang, West Bandung Regency, West Java, Indonesia

2021 ◽  
pp. 10-19
Author(s):  
Erwin Theofilius ◽  
Zahidah Hasan ◽  
Asep Agus Handaka ◽  
Herman Hamndani
Keyword(s):  
Water Quality ◽  
Species Diversity ◽  
Sampling Method ◽  
Diversity Index ◽  
Research Area ◽  
Survey Method ◽  
Gastropod Species ◽  
Evenness Index

This study conducted to determine the water quality of Situ Ciburuy based on the structure of the gastropod community as a bioindicator. The survey method used in this study based on collecting data directly at the research area (purpose sampling method).  For instance, species and density of gastropods were descriptively analyzed, using diversity index and evenes index. For instance, The findings showed that level of water quality in  Situ Ciburuy based on gastropods bioindicators was lightly polluted. That is indicated by the low to moderate diversity of gastropods, which ranges from 1.31-1.98. The Shannon evenness index (0,73-0.95) revealed low gastropod species diversity in Situ Ciburuy, indicating low evenness of gastropod in Situ Ciburuy.

scholarly journals Water quality status of an urban lake in the dry season from 2017 to 2020 (Situ Gintung, Banten Province, Indonesia)

2020 ◽  
Vol 211 ◽  
pp. 03008
Author(s):  
Sinta Ramadhania Putri Maresi ◽  
Tri Edhi Budhi Soesilo ◽  
Ami Aminah Meutia
Keyword(s):  
Water Quality ◽  
Sampling Method ◽  
Anthropogenic Activities ◽  
General Information ◽  
Dry Season ◽  
Domestic Waste ◽  
Water Quality Status ◽  
Quality Status

Urban lakes are experiencing various kinds of problems because of the anthropocentrism of environmental management. This also happens in Situ Gintung, Indonesia. This lake is polluted by many pollutants from urban activities, such as the entry of domestic waste into waters due to anthropogenic activities and the amount of leftover food not consumed by fisheries. These problems can be solved by observing the water quality of Situ Gintung to provide information about parameters that have exceeded environmental quality standards and provide general information about the water quality in the dry season from 2017 to 2020. The research is done using a purposive sampling method and determining water quality status with the STORET method based on the Indonesian standard with parameters less than ten. As a result, Situ Gintung water is neither classified as class I, II, III, and IV nor be utilized for consumption, recreation, fisheries, and irrigation because the quality status is mostly in the heavily polluted category. Furthermore, the three highest polluters from each class are BOD5, COD, and a total of Coliform.

scholarly journals Damage assessment of semi-precast slabs using impact-echo method

2017 ◽  
Author(s):  
Zhenghua Sun ◽  
Junwei Ma ◽  
Xiaobin Wei ◽  
Huyue Sun
Keyword(s):  
Traditional Method ◽  
Damage Assessment ◽  
Precast Concrete ◽  
Construction Quality ◽  
Impact Echo ◽  
Mapping Strategy ◽  
Core Extraction ◽  
Impact Echo Method

Semi-precast slabs are widely used in precast concrete constructions in China nowadays.However the construction quality of them are often hard to control, and the constructoion quality of the upper in-situ concrete of them is difficult to be guaranteed, as a result, how to detect the construction defects correctly and timely become more and more important. In this paper a traditional method Impact-Echo (IE) method is used to detect the flaws between the precast concrete and the upper in-situ concrete of the semi-precast slabs. Firstly one experimental slabs with many designed flaws was constructed, and than IE method was used to detect these flaws, fially the detected results were analysed to evaluate the proposed method. The results were processed using a mapping strategy, which indicated suspicious points where core extraction was undertaken. All cores taken from points derived from IE method results were found to have flaws providing evidence. The experimental results show that IE method may be a suitable tool to assess the construction quality of Semi-precast slabs

Investigational Studies on Quantity of Salinity in Netravati River Estuary Sand-Coastal Karnataka

2018 ◽  
Vol 6 (6) ◽  
pp. 46
Author(s):  
Raveesha P ◽  
K. E. Prakash ◽  
B. T. Suresh Babu
Keyword(s):  
Brackish Water ◽  
Sea Water ◽  
Salt Water ◽  
Construction Material ◽  
Salt Content ◽  
River Estuary ◽  
Sand Sample ◽  
River Sand ◽  
Natural Aggregates

The salt water mixes with fresh water and forms brackish water. The brackish water contains some quantity of salt, but not equal to sea water. Salinity determines the geographic distribution of the number of marshes found in estuary. Hence salinity is a very important environmental factor in estuary system. Sand is one major natural aggregate, required in construction industry mainly for the manufacture of concrete. The availability of good river sand is reduced due to salinity. The quality of sand available from estuarine regions is adversely affected due to this reason. It is the responsibility of engineers to check the quality of sand and its strength parameters before using it for any construction purpose. Presence of salt content in natural aggregates or manufactured aggregates is the cause for corrosion in steel. In this study the amount of salinity present in estuary sand was determined. Three different methods were used to determine the salinity in different seasonal variations. The sand sample collected nearer to the sea was found to be high in salinity in all methods.  It can be concluded that care should be taken before we use estuary sand as a construction material due to the presence of salinity.

PENGARUH STRATEGI PEMBELAJARAN DAN MINAT BELAJAR TERHADAP HASIL BELAJAR KONSTRUKSI POLA PADA SISWA SMK NEGERI 8 MEDAN

2012 ◽  
Vol 18 (3) ◽  
pp. 121
Author(s):  
Surniati Chalid
Keyword(s):  
Secondary Education ◽  
Learning Outcomes ◽  
Learning Strategies ◽  
Construction Material ◽  
Quality Of Education ◽  
Vocational Schools ◽  
Educational Facilities ◽  
Quality Of Learning

Vocational schools (SMK) is a secondary education that preparesstudents primarily for working on a particular field. Diverse efforts made by SMKgraduates increased 8 Medan include improving the quality of education byreforming both the substance of the material and the provision of facilities andinfrastructure. However, the results have not been up, cermatan can be seen fromthe low competence of graduates, making it less able to play a role in meeting thedemands of the workplace. Assumed to be an indication of the quality of learning isstill performed during less effective, less efficient and unable to increase studentinterest. In order to achieve maximum learning outcomes is through theimprovement of learning strategies to utilize the educational facilities in accordancewith existing conditions, ie, by examining one of the subjects namely Constructiondressmaking pattern. Construction material pattern done with learning strategyapproach manipulated into two comparing results STAD cooperative learningstrategies and learning strategies expository and compare the results with thelearning characteristics of students with high and low interest in learning onlearning outcomes Pattern Construction.

Strategies for mitigating burnout among early career doctors in Nigeria: lessons learnt from the qualitative CHARTING study

2020 ◽  
Vol 3 (1) ◽  
pp. 97-103 ◽  
Author(s):  
Oladimeji Adebayo ◽  
Kehinde Kanmodi ◽  
Olusegun Olaopa ◽  
Omotayo Francis Fagbule ◽  
Iyanu Adufe ◽  
...  
Keyword(s):  
Sampling Method ◽  
Psychosocial Problems ◽  
Early Career ◽  
Leadership Positions ◽  
Group Discussions ◽  
Psychological Review ◽  
Psychological Issues ◽  
Specific Factors ◽  
Stakeholder Dialog

AbstractBackgroundEarly career doctors (ECDs) are faced with many challenges due to their transition from undergraduate medical/dental studentship to being postgraduate doctors and being in an early phase of their career. The specific factors that affect ECDs in their careers and endeavors at the workplace range from poor remuneration, particularly in developing countries, to psychosocial problems (such as burnout [BO] syndrome). There is a dearth of information on BO among ECDs in Nigeria. This qualitative study aims to explore the opinions of ECDs in Nigeria on the causal/predisposing factors of BO, effects of BO, and strategies for mitigating BO among ECDs in Nigeria.MethodUsing purposive sampling method, two sessions of focus group discussions (FGDs) involving 14 ECDs (key informants) holding key leadership positions and who were delegates of other ECDs in Nigeria were conducted to explore their experiences on psychological issues among ECDs. Data collected were transcribed and analyzed thematically.ResultsBO is an issue of serious concern among ECDs in Nigeria. The causes of BO are diverse, some of which include low staff strength, prolonged work hours, wrong counseling, lack of job description and specification, and abuse of powers by trainers. In order to mitigate the issue of BO among ECDs, the respondents recommended that work policy review, medical workforce strengthening, stakeholder dialog on ECDs’ welfare, regular psychological review of ECDs, and provision of free yearly medicals need to be looked into. Conclusion: Our findings revealed that the participants considered BO issues among ECDs to be common, and it affected their performance and the overall quality of care in Nigeria health system. Based on our findings, there is an urgent need to mitigate the problem of emotional exhaustion among ECDs in Nigeria.

Pengaruh Jenis Co-Solvent terhadap Rendemen dan Mutu Biodiesel secara Transesterifikasi In Situ Menggunakan Radiasi Gelombang Mikro

2016 ◽  
Vol 10 (2) ◽  
pp. 119-126
Author(s):  
Mahlinda Mahlinda ◽  
Fitriana Djafar
Keyword(s):  
Catalyst Concentration ◽  
Maximum Yield ◽  
Acid Value ◽  
Experimental Result ◽  
In Situ Transesterification ◽  
Yield And Quality ◽  
Solvent Type ◽  
Biodiesel Quality

The main purpose of this research was to observer effect co-solvent type (n-Hexane, chloroform and without co-solvent)  toward yield and quality of biodiesel via in situ transesterification process using microwave irradiation. The process was studied at microwave power 450 watt, reaction time 4 minutes, methanol to seed ratio 25:1 and catalyst concentration 5%. The physicochemical parameters of the biodiesel produced such as viscosity, density and acid value were analysed and compared with the SNI 7182-2012 standard. The experimental result showed the maximum yield biodiesel 78,32% obtained by using co-solvent chloroform.Test result of physicochemical properties (viscosity, density and acid value) of biodiesel products using co solvent n-Hexane, chloroform and without co solvent showed that these products conform to the SNI 7182-2012 standars. The type of co-solvent only affectedon biodiesel yield dan not affected on biodiesel quality (viscosity, density and acid value).  ABSTRAKTujuan penelitian ini adalah untuk mempelajari pengaruh jenis co-solvent (n-Hexane, chloroform dan tanpa co-solvent) terhadap rendemen dan mutu biodiesel secara trasesterifikasi in situ menggunakan radiasi gelombang mikro. Proses dilakukan pada daya gelombang mikro 450 watt, waktu reaksi 4 menit, perbandingan berat metanol terhadap bahan baku 25:1 dan jumlah katalis 5%. Parameter fisiko kimia dari produk biodiesel seperti viskositas, densitas dan angka asam di analisa dan dibandingkan dengan standar SNI 7182-2012 tentang biodiesel. Hasil penelitian menunjukkan rendemen maksimum biodiesel sebesar 78,32% diperoleh dengan menggunakan co-solvent chloroform. Hasil pengujian  karakteristik fisiko kimia (viskositas, densitas dan angka asam) dari produk biodiesel menggunakan co-solvent n-Hexane, chloroform dan tanpa co-solvent menunjukkan bahwa semua parameter ini masih memenuhi standar SNI 1782-2012 tentang biodiesel. Jenis co-solvent hanya berpengaruh pada rendemen biodiesel dan tidak berpengaruh terhadap mutu biodiesel (viskositas, densitas dan bilangan asam).Kata kunci: co-solvent, in situ transesterifikasi, microwave, rendemen, mutu   

PENGARUH NILAI PELANGGAN, INOVASI PRODUK DAN KUALITAS LAYANAN TERHADAP LOYALITAS NASABAH BANK MUAMALAT INDONESIA CABANG MADIUN

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Binti Mutafarida
Keyword(s):  
Quality Of Service ◽  
Customer Loyalty ◽  
Random Sampling ◽  
Product Innovation ◽  
Customer Value ◽  
Research Method ◽  
Sampling Method ◽  
Descriptive Research ◽  
Independent Variable

The development of sharia banking in Indonesia very rapidly grow up preceded by Bank Muamalat Indonesia and in 2013 ranked as the bank with the highest loyalty and the best among other sharia banking nationally. Bank Muamalat Indonesia branch of Madiun is one of the first branch in Madiun and currently has many competitors from other sharia banking. Based on this background, in this study take what factors affect the size of customer loyalty Bank Muamalat Indonesia branch of Madiun. Based on the result of research, it is found that the level of loyalty of customer of Bank Muamalat of Madiun branch is mostly influenced by product innovation with value of t test value obtained by t-count 2,493, while second factor is influenced by service quality with result of tcount 2,268. So the least influenced factor by the value of the customer is with value of 2.217. This research is a descriptive research method and associative / relationship, this matter to know the value of independent variable. While population of this research is funding customer of Bank Muamalat Indonesia branch of Madiun with amount of 22.196 customer by taking data using random sampling method as much as 108 customer. Keyword: Customer Value, Product Innovation AND Quality Of Service

Estudio del proceso de lavado de contenedores para eliminar tiempos y movimientos innecesarios, caso: Wash Containers S.A de C.V.

2020 ◽  
pp. 25-36
Author(s):  
Juan Alfredo Lino-Gamiño ◽  
Carlos Méndez-González ◽  
Eduardo José Salazar-Araujo ◽  
Pablo Adrián Magaña-Sánchez
Keyword(s):  
Business Process ◽  
Value Chain ◽  
Process Management ◽  
Core Business ◽  
The Core ◽  
Washing Process ◽  
Overall Performance ◽  
The Times

In the value chain it is important to keep in mind the core business of the company, since it depends largely on the competitiveness of the company and its overall performance, bearing in mind that all business indicators depend on it. In this work we will study the washing process within the company WASH CONTAINERS SA DE CV, to improve the washing processes and in this way reduce times and movements in the process leading the company to reduce costs considerably within the operations company daily, having a more competitive operation and with greater profit margin in its business process. Goals: It Improve the logistics of the movement of containers for washing and with it the core business of the company. Methodology: The action research will be applied applying Business Process Management for the improvement of processes in situ, it will be developed in a certain period of time and with that it will establish an improvement projection. Contribution: The improvement of the times for the disposal of the containers and their subsequent use, allows a better competitiveness and with it the income of the company, on the other hand, the transport companies improve in performance in quantity, quality of disposition and with it their income.

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