Biography:

Abstract:

Manufacturing systems are usually classified into 4 types (assembly for the order, production order, engineering to order and production for stock), although these four models consider more than ninety percent of the processes there are certain manufacturing processes that can not be treated with any of the previous models, it is why in this work we propose the need to consider and formalize the "disassembly for order" model. In the proposed manufacturing model, we make considerations on complications disassembly having a product as raw material, especially when the order is only for a specific part of disassembly, reason for which you have to include the Holding cost when it's time to do the costing, we also consider, in order to make a more robust model, the article to disassemble and products will get of it, as are perishable items, which reduce the cost each day they are stored. Finally, the model considers the seasonality of the product, the model assumes that market costs are dynamic and constantly changing, so that the model can (after a while) be able to statistically determine at what price a product should be offered to a specific client in order to move faster and improve profits right through the rapid inventory turnover, lower storage and use of market situations.

Biography:

Eng. Naser has completed his MSc in Thermal Power Fluid Engineering from Manchester University. He has 3 years of teching experiance as an instrocture in the department of mechanical engineering at the Australian College of Kuwait (ACK) and 4 years of research experiance in Kuwait Institute of Scientific Research (KISR). He lead several projects in the field of nuclear safety and risk assessment, nano coatings for enhancing energy efficincy, reverce engineering of wind turbines, biofuel, and improving diesel fuel.

Abstract:

A study was conducted in order to determine the feasibility of using used cooking oil as an alternative source of energy in Kuwait. The method used in this study involved data collection of all raw cooking oil produced in Kuwait and exported to it between the period of 2011 and 2014, which represents the overall amount of cooking oil within the country. This is followed by a calculation of the estimate used cooking oil produced from its initial stage. The estimated amount is then forecasted using linear trendline for forward data to determine the future changes in quantities and compared to diesel fuel in terms of cost, energy production, and environmental effects. The research findings showed that used cooking oil can be utilized as a supportive source of energy in Kuwait with less cost and environmental impact compared with diesel fuel. It also showed that energy outpot from such source is partialy less than diesel but can be enhanced using metal based and oxygenated additives.

Biography:

Yubao Chen is director at China Programme and professor at Department of Industrial & Manufacturing Systems Engineering in College of Engineering and Computer Science. He has obtained his Phd. in Mechanical Engineering, University of Wisconsin-Madison, U.S.A., 1986. M.S. in Mechanical Engineering, University of Wisconsin-Madison, U.S.A., 1984

Abstract:

With the ever increasing market competition and technology advances, more and more countries or regions are placing advanced manufacturing technology on their top priorities for economic growth and social development. In Europe, for instance, Germany has announced the Industry 4.0 strategy in 2013. In the US, President Obama launched the Advanced Manufacturing Partnership (AMP) in 2011. Since then, many other initiatives have been launched, including the Advanced Manufacturing Partnership Steering Committee 2.0 (AMP 2.0) in 2013, the Nationwide Network for Manufacturing Innovation (NNMI) in 2014, and the Revitalize American Manufacturing Act signed into law by the President in December 2014. Most recently, the Chinese government published the 10-year plan and roadmap towards manufacturing the Manufacturing 2025 strategy. The largest international collaborative program Intelligent Manufacturing Systems (IMS) led by Japan is also rolling out a road map for next step with its IMS2020 vision. With all these initiatives and programs, the core technology development and implementation area is in intelligent manufacturing. To this end, key technological enablers are identified, such as Internet of Things (IoT), Cyber-physical Systems (CPS), Information and Communication Technology (ICT), etc. There is a clear trend that all regions and countries have adopted these advanced enablers, and integrate them with traditional manufacturing systems so as to create smart products and smart factories. However, the approaches and strategies in different regions vary due to variations in industrial status and market conditions. This paper will provide a comparative study on the strategies and approaches from three representative regions on intelligent manufacturing technology: Germany, US, and China. Challenges and research focus at these regions will also be addressed.

Biography:

Hamza Alsalla has got a high diploma in renewable energy and mechanical engineering from the academy of graduate studies, Libya and he has received his master degree in Aerospace materials from Sheffield University, department of material science and engineering, United Kingdom since 2012. Also he has started his PhD since September 2013 at the University of Exeter, College of Engineering, Mathematics and Physical Science. He is a lecture in the Technology College of Civil Aviation and Meteorology, Sbeah-Libya and Demonstrate Tutorial in mechanics at Exeter University. He is Ex-lecture in Alzzaytouna University –Libya. His research interests are in aerospace material and mechanical engineering.

Abstract:

Direct Metal Laser Sintering (DMLS) and Selective Laser Melting (SLM) are an Additive Manufacturing (AM) technique that produces complex three- dimensional parts by adding layer up on layer of powder materials from bottom to top. Recently, AM has received large amount of press and is set to have a large impact such as decreasing the cost of production, fast and flexible, design freedom, increase the innovation opportunities and develop new materials system for the consumption of Aerospace industries. Since the major problems come across in the process is limited surface quality, and residual porosity in SLM and DMLS parts may be undesirable for some applications where fatigue resistance and high strength are essential. This research aims to improve the fracture toughness, ductility and fatigue life for the metallic components, which is essential to entirely exploit potential of the SLM and DMLS of these alloys for aerospace applications. The development in the Additive Manufacturing technology is not only limited to new machines and new materials and methods but also new processes, to offer high mechanical properties and performance. This research focus on DMLS and SLM of Titanium and Stainless steel alloys to investigate the effect of different building direction on strength, ductility and fracture toughness property. This investigation may create a strong need for a system that could contribution in the selection of the possible process chains, materials and finishing options and may extend the capability of AM process to generate high performance component for commercial application in aerospace industries.

Biography:

Dr. Joseph Stokes, Head of School of Mechanical and Manufacturing Engineering in Dublin City University, was awarded the degrees of B.A. and B.A.I. in Mechanical and Manufacturing Engineering from Trinity College Dublin in 1997 and attained his PhD in Mechanical and Manufacturing Engineering from Dublin City University in 2003. He has been research active in the area of Surface Engineering since 1997. His professional achievement includes the production of coated and free-standing engineering components using the HVOF (High Velocity Oxy-Fuel) process, other processes include Atmospheric Plasma and Flame Thermal Spray (the only Thermal Spray facility in any University/Institution in Ireland), and Magnetron Sputtering PVD techniques, including Tribological Assessment. Applications of his research include: Wear Reduction, Bio-coatings for Implant Replacement Therapy, Oil and Gas Protective Coatings to mention a few. He is an active member of the Centre for Medical Engineering Research (MEDEng) and the National Centre for Plasma Science and Technology (NCPST).

Abstract:

To date economic and rapid solutions to equipment failure caused by wear and corrosion in many industries but partivcularly in oil and gas industries have been reduced through the deposition of cermets using HVOF thermal spray coatings especially tungsten carbide cobalt (Diamalloy 2004) deposits to reduce wear effects and Inconel 625 (Diamalloy 1005) to prevent corrosion . Research generally focused on monolitic coatings (single layers) or multi-layers where one material was applied upon another. However the trend is now moving towards the development of bimodal powders to form a composite coating structure and from here to the mixing of nano and micro size feedstock powders, through the addition of nano-structured WC-Co. This research paper demonstrates the benefit of using blended nano structured WC-Co with Inconel 625 over layered type coatings when subjected to hostile mechanical/wear/corrosion environments. This was achieved through design of experiment (DOE) analysis to study the influence of different powder percentage on the coating performance such as coating microstructure and coating mechanical performance, such as; three-point bending tests and hardness measurement. The results showed that 75% weight of nanostructured WC-12Co mixed with Diamalloy 1005 Inconel-625 was superior comparec to any other percentage mixture of the two powders and compared to single layer deposoition of each coating, due to the strong adhesion of WC nano size grains at the substrate/coating interface through improved mechanical interlocking and reduce the possibility of cracks initiation. The results show promise in terms the current maintenance challenges experience by the Oil/Gas industry today; in terms of possibly extending the life of components, plus providing huge economic savings.

Biography:

Ahmed A D Sarhan graduated with a PhD in Precision Engineering Department, Kyoto University, Japan. He developed an intelligent spindle for CNC machine tool with displacement and thermal sensors to monitor the spindle characteristics and machining process simultaneously to protect spindle from damages at higher speed spindles. He is currently an Associate Professor in University of Malaya, Malaysia. He has published more than 120 papers in reputed journals and conferences and has been serving as an Editorial Board Member of many reputed journals. He is also a Reviewer for many PhD thesis, reputable engineering journals and refereed international conferences.

Abstract:

Owing to technical advances in CNC technology, the productivity and accuracy of machining process has been drastically increased. The CNC has enabled machine tools to move faster to be more accurate and more flexible. Compared with the advancement of the motion control, the control for machining process still has a lot of issues. Although there are several successful results applied in the market, the adaptive functions have not become general for machine tools especially for machining centers. This is because feedback control itself has time lag and it is difficult to control the process to enhance productivity while avoiding the unexpected situation such as tool breakage. This indicates that the combination of feed forward approach associated with CAM is necessary. Another reason is lack of monitoring capabilities. Adding expensive sensors is not welcomed by machine tool builders as they are always on the competitive edge. On the other hand, monitoring quality is very important in order to associate monitored information with prompt decision-making processes. We have been developing Intelligent Machine Tool (IMT) system that can autonomously determine machining conditions and adapt them according to the monitoring of actual machining processes in an intelligent manner. This research work describes the concept, configuration of the system and developed functions.

Biography:

Dibyendu Das has completed his B.E in Mechanical Engineering from Tripura University in the year 2005 and subsequently attained his Master in Engineering in Water Resources & Hydraulic Engineering from Jadavpur University in the year 2008. Presently he is pursuing his PhD from Jadavpur university and working as Motor Vehicle Inspector in Transport Department of Tripura state of Union of India. His earlier assignment includes Assistant Professorship in NIT AGARTALA for more than 5 years. He is also an Associate Member of Institute of Engineers, India.He has published 4 papers in reputed international journals including Taylor & Francis and presented paper in National Convention & National Seminar organised & sponsored the Institute of Engineers, India.

Abstract:

Manufacturing is considered to be the backbone of economy of a country. In present scenario, Green Manufacturing is paid much heed to increse the sustainability of manufacturing process. In this paper, perspective application of Green Manufacturing is carried out in a raw rubber processing plant located in Tripura. The paper illustrates the identification of possible reasons causing hazardous impact on environment and subsequent development of process that can reduce the impact on environment. Moreover, a feasibility study is conducted to find out the adaptability of the alternative process.

Biography:

Mandar M. Sumant is associated with Babaria Institute of Technology, India teaching various subjects of mechanical engineering. He has done M.E. in Advanced Manufacturing System. He has having four years of teaching experience. He also served as a lecturer at M.S. university Baroda. His skills include Project Management, AUTOCAD, Lean Manufacturing, Engineering Design, Education Leadership.

Abstract:

The aim of lean is to eliminate the waste found in respective industries by using the different lean tools. The main purpose of this study is to identify and prioritize the different types of waste found in industry and ranking it as per different Lean Waste. The questionnaire survey has been carried out in Manufacturing Sector. One of the best methods to prioritize the lean waste is Analytical Hierarchical Process (AHP) used to investigate. AHP model evaluated as per responses received from various designated industrial professional and experts. For manufacturing sector, transportation waste is critical. To, the knowledge of author, it is the first of its kind, paper who attempted to give rank to the lean waste in published journals.

Biography:

DR. Kamil has done masters in Mechanical Engineering from Ericyeds University in 1996 and obtained his doctorate from Gazi university in 2006. He has a vast teaching experience and served as a lecturer at Imam University for 14 yrs. He has published his many research work in leading international journal.

Abstract:

Structural elements made from steel sheet metal have a great importance in today's industry. One of the biggest problems with the parts bended by using dies is the spring angle because it destines bent sheet metal out of manufacturing tolerances. So, it is vital to know a part’s spring angle properties in advance which are mainly dependent on the properties of the sheet metal and bending conditions. This study aims to investigate the effects of bending angle and punch radius on spring angle of sheet metal with rolling angle of 45o in V-die bending process. After being removed from the bending dies spring-back rates of the specimens were measured by using optical goniometer. At a constant load with respect to the bending angle and punch radius values, spring angle shaded off into spring-back angle or spring-go angle. In this study, it was observed that the spring angle is 0o when the appropriate value for punch radius or bending angle are taken depending on the other bending conditions.

Biography:

University of Science and Technology of Oran-Mohamed-Boudiaf BP 1505, El M’Naouer,31000, Algeria

Abstract:

The performance of tow mixed flow turbocharger turbine rotors is numerically investigated, the tow rotors differ mainly in their inlet angle geometry, one has a constant blade angle (rotor A) and the other has a nominal constant incidence (rotor B).This study, performed with the ICEM and CFXsoftwares of ANSYS, presents a numerical performance prediction of tow mixed flow for a wide range of rotational speeds and pressure ratios. The influence of inlet blade angle on the turbine performances is also investigated.

Biography:

Abstract:

This Paper investigated effects of annealing and age hardening on the ultimate tensile strength (UTS) and electrical conductivity of aluminium-nickel cast using sand mould. Pure aluminium melt was alloyed with nickel which was added in 2% to 10%. Annealing and age hardening were carried out on the casts. Obtained results showed that Al-2% Ni alloy has the highest UTS of 604.44 MPa. On the other hand, Al-6% Ni annealed alloy has the highest electrical conductivity with a value of 6.15×107 S/m. The Al-4% Ni alloy combined both high strength and conductivity having UTS of 603.28 MPa and electrical conductivity of 5.69×107 S/m.

Biography:

L. Torchane is with the Mechanical Engineering Department, University of Tebessa, Algeria

Abstract:

In this work, our task is in optimizing the nitriding treatment at low-temperature of steel 32CrMoV13 by way of mixing ammonia gas, nitrogen and hydrogen to improve the mechanical properties of the surface (good wear resistance, friction and corrosion) and of the diffusion layer of the nitrogen (good resistance to fatigue and good tenacity with heart). By limiting our work to pure iron and to alloys iron-chromium and iron-chromium-carbon, we have studied the various parameters which manage the nitriding such as flow rate and composition of the gaseous phase, the interaction of chromium-nitrogen and chromium-carbon with the help of experiments in the laboratory by thermogravimetry. The acquired knowledge has been applied by mastery of the growth of ' combination layer on diffusion layer in the case of industrial steel 32CrMoV13.

Biography:

I Yahuza completed his MEng from Abubakar Tafawa Balewa University, Bauchi Nigeria. He is the Examination Officer of the Department of Automobile Engineering, Abubakar Tafawa Balewa University, Bauchi Nigeria. He has published 5 papers in reputable journals.

Abstract:

This work is on the development of the G&M codes for the production of the brake disc using CNC programming. This utilizes the knowledge of CNC machine language in developing the necessary machine codes that will be used for machining a prototype model of the brake disc used in automobiles. The dimensions of the output brake disc are Ø100mm x Ø20mm with a step turn of Ø70mm x Ø15mm. The prototype is machined by running the developed codes on a CNC milling machine and the work piece used is soft wood material. The work is aimed at developing these codes for the mass production of the brake disc with high precision in our automobile industries adding to the local content initiative.

Biography:

Sanjay Misra obtained MTech degree in Software Engineering from Motilal Nehru National Institute of Technology, Allahabad, India and DPhil from University of Allahabad, India. Presently, he is Professor of Computer Engineering, in Covenant University, Nigeria. He is a Software Engineer and previously held academic positions at Atilim University, Turkey, Subharati University, and UP Technical University, India. His current researches cover the areas of software quality, software measurement, software metrics, software process improvement, software project management, object oriented technologies, XML, SOA, Web Services, and cognitive informatics.

Abstract:

Software development process is a human centric activity where cognitive and human factors play an important role in producing high quality software. This paper evaluates the impact of cognitive factors for implementing quality assurance program in software industries. In particular, an empirical study has been carried out to investigate how much human factors affect for the adoption of measurement and metric program in software industries. The results of the empirical studies have analyzed and conclusions are drawn. Our results show that management of the software companies-specially for small and medium scale software industries are reluctant for the adoption of measurement and metric program.

Biography:

M.Saravanabalaji is currently working as Assistant professor, Department of Electronics and instrumentation Engineering, Kumaraguru college of Technology, Coimbatore, India

Abstract:

Paper industries are using manual chemical control methods to apply the chemicals to the digester. The main objective of the project is to increase the quality of the paper by increasing the brightness of the pulp. The brightness of the pulp is inversely proportional to the pH value .Hence, the pH value should be maintained in the range of (2-4) to achieve the maximum brightness range 85%. Initially, concentrated sulphuric acid is pumped from the filtrate to the stand pipe in which the pulp is present. This mixture is mixed with the bleaching agent (ClO2 solution) in a D0 mixer. The acidity is controlled by the brightness given by a device. The industries are facing difficulty in calculating the accurate amount of acid to be supplied. The brightness shows fluctuations and makes it more difficult. In order to solve this problem, we are introducing pH meter(to detect the acidity of the solution) parallelly to the mixer .Due to this, the wastage of the pulp and chemicals is reduced and the quality of the paper is increased.

Biography:

Avigdor Gal is an Associate Professor of the Faculty of Industrial Engineering and Management at the Technion, he is a Graduate and an Expert on Information Systems. His research focuses on effective methods of integrating data from multiple and diverse sources which affect the way businesses and consumers seek information over the Internet. He has published more than 100 papers in leading professional journals, conferences and books. He authored the book “Uncertain schema Matching” in 2011, serves in various editorial capacities for periodicals and has helped organize professional workshops and conferences nearly every year since 1998.

Abstract:

Service systems play a central role in the health sector. The provisioning of services is realized by a service process that can be broadly captured by a set of activities that are executed by a service provider and designated to both attain a set of organizational goals and add value to customers. Service processes can be classified by the amount of interactions between service providers and customers and the level of demand predictability and capacity flexibility. A service can be multi-stage, in the sense that service provisioning involves a series of interactions of a customer with a provider or specific resources at a provider’s end. Further, a process can be scheduled, meaning that the number of customers to arrive is known in advance up to last moment cancellations and no-shows. Then, customers follow a predefined series of activities with every activity having a planned starting time for its execution, duration and a set of involved resources. Multi-stage scheduled processes are encountered for instance in outpatient clinics where various types of treatments are provided as a service to patients. Here, a schedule determines when a patient undergoes a specific examination or treatment. In this talk, we shall illustrate the impact big data has on the healthcare sector by analyzing RTLS-based data from a real-world use-case of scheduling in a large outpatient oncology clinic. We shall demonstrate the usefulness of the proposed methods in detecting operational bottlenecks in the schedule specifically longer-than-planned synchronization delays and diagnosing the root-cause to those problems.

Biography:

Dr. Dadach is a lecturer at Higher Colleges of Technology, Abu Dhabi. He has done PhD. In chemical engineering from Laval University, Canada. He has skills and expertise in CCS, ASPEN HYSYS, Exergy analysis and process engineering. He has developed a FORTRAN program on Markov analysis of DNA sequences of psbA genes of Synechocystis PCC 6803 in order to determine which genes might be responsible for divergent behavior of transcription in response to light intensity at Osaka National Research Institute , Japan.

Abstract:

The standard conditions used for the design of gas turbines are 15o C, sea level atmospheric pressure and 60% relative humidity. In Abu Dhabi, the performance of gas-turbine power plants is therefore affected by its specific atmospheric conditions since they are different from the ISO requirements. The main objective of this research work was to conduct an exergy analysis for a power-generation plant in Abu Dhabi (UAE) in order to investigate the effects of high temperatures and absolute humidity of ambient air on its performance. Our data showed that the temperature had more negative effects on the performance of the plant than the absolute humidity and the combustion chamber was the main source of irreversibility (70.2%). On the other hand, the compressor had the lowest contribution of exergy destruction (12.4%). Compared to the design conditions (T=15o C, RH=60%), our results indicated that in summer conditions (T=43o C, RH=50%), the power plant lost 4.66% of its net power output and 4.61% of its exergy efficiency.

Biography:

Ayman Batisha holds a PhD degree in Civil Engineering from Cairo University (Egypt, 2001). He taught graduate courses at Cairo University. He is a certified Environmental Consultant and Consultant Civil Engineer. He is the founding Editor-in-Chief of Practice, Progress and Proficiency in Sustainability Book Series. He is a Member in Egyptian National Scientific Committee on Problems of the Environment, SCOPE and National Committee for International Geosphere-Biosphere Programme (IGBP). He is selected as the Reviewer for both "The IPCC Guidelines for National Greenhouse Gas Inventories: Wetlands" and Climate Change 2014. He is an Editorial Board Member of the Environmental Development, Transdisciplinary Journal of SCOPE. He is a Reviewer of four Journals published by Elsevier: Hydrology; Sustainable Cities and Society; Urban Climate and Applied Soft Computing. He has also published a book with title "Structural Health Monitoring of Offshore Structures Using Artificial Intelligence Technique".

Abstract:

Water desalination is one of the few rainfall-independent water sources. Global dynamics and global warming are creating competing pressures on freshwater finite resources which diminishing dramatically. Competition over water is even more acute in the zones of water stress leading sometimes to serious tensions between different groups of users. Climate change is expected to add to more pressures on water resources in arid and semi arid zones. Water desalination can pave a safe way towards sustainable and peaceful development from every angle: social, economic, political, cultural and ecological. To improve the sustainability of desalination process in Egypt, we believe four ideas should be focused on both of the environmental impacts and water production cost of desalination should be minimized; the robustness and maturity of emerging promising technologies especially for Membrane technology and in its core are solar powered desalination system; reverse osmosis and forward osmosis should be enhanced and energy efficiency of desalination processes and their reliance on renewable energy sources should be maximized. The proposed research is focused on developing environmentally sound technologies; socially acceptable and economically viable of providing fresh water for human use in Egypt. The aim is a better understanding of the environmental impacts of desalination process leading to better mitigation plans through design and operational scenarios. Also, new membranes should have improved properties including higher flux, less fouling potential, lower ecological footprint and improved mechanical integrity. Water desalination can contribute to economic development, political security, poverty alleviation and regional integration.

Biography:

Deniz Herand is a lecturer at Turkish German University. He has experience of over eight years of teaching at graduate level. He obtained his Doctor of Philosophy (Ph.D.) from Sakarya University in Industrial Engineering in 2013.

Abstract:

Geographic Information System (GIS) is a type of system that can help users in decision support processes on the solutions of social, economic and environmental complex problems. Once it is thought that the vast majority of the data that enterprises use in decision-making processes are location-based, there is no need to emphasize the importance of GIS. However, the GIS software which is used on the market brings some technical problems. The first of them is the need for integration of different types and formats of data that are used by GIS software. The other problem is that GIS software has by their functionality strengths and weaknesses in different areas and cannot help each other in improving their weak fields in modular or functional basis. That GIS software structures are not so flexible that they can be adapted to quickly changing market conditions is one of the other problems. For the solution of all these individual problems, the Service Oriented Architecture (SOA Service Oriented Architecture) approach could be used on the necessary GIS. Since SOA is an enterprise architecture approach which can integrate any type of software technologies and can be extremely quickly adapted to the process changes, it can be used in GIS for data integration and communication between the existing GIS software. The main field through that can a GIS be supported by SOA is the ensuring a fast and flexible system restructuring the GIS service oriented.

Biography:

Dr. Nacer BEZZI , Research Director at the Technology Laboratory of Materials and Process Engineering ( LTMGP ) of the University of Bejaia (Algeria), author of several national and international communications and publications, involved in several research projects in mineral industry and materials (CMEP Tassili CNEPRU, PNR); coordinator of several European projects (Tempus , Erasmus Mundus , Erasmus +) on various themes: employability , communication, inclusive education , international relations, etc. Regional operational person in charge (ROR) of the program of cooperation Algéro-UE on the higher education (PAPS) and provided various responsibilities: scientific, educational and administrative and organized several meetings (seminars, conferences and forums ...).

Abstract:

Adsorption tests were carried out in static mode on natural phosphate waste samples in a raw state and after processing. Various techniques of analyses were used (1) To characterize the material adsorbing on the granulo-chemical and thermo-mineralogical levels, (2) To evaluate the performances of the process of adsorption used in relation to the existing mineralogical species in phosphatic and gangue elements, (3) To evaluate incubation condition in ions PO43-, carboxylate grouping and steric obstruction effect on lateral chains of adsorbates. This effect is significantly affected by the composition of the incubation medium. Thus, the fractions that are low in phosphate ions appeared definitely more effective. The physico-chemical characterization of the waste phosphate samples by the previous techniques (DRX, MEB, IR) revealed appreciable differences on granulometric, mineralogical, chemical and structural levels. These differences had a remarkable influence on the performances of the adsorption process of the phosphate amino-acid couple. Adsorption tests revealed that the fixing of the amino-acids on this kind of substrate is appreciably affected by the composition of the incubation medium. Examination of the influence of the composition on this substrate in PO43- ions showed that they obstruct the adsorption processes. For a given adsorbent, the quantity adsorbed at saturation of alanine is higher than that of aspartic acid. This is partly related to the steric obstruction of these molecules. The quantity of amino-acid adsorbed at equilibrium is more important for adsorbents that are low in phosphate ions. Thus, under the experimental conditions used and whatever the type of adsorbate, the adsorbent which adsorbs more than (1.45 mmol/g) is the raw phosphate. The phosphate treated by calcination at 900° C during 20 mn involved a considerable drop of the adsorption quantity. This is probably related to specific surface, mineralogical and chemical composition of the used adsorbents as well as the effect of the steric obstruction of side chains of both amino-acids and particularly aspartic acid. The results obtained also revealed a good correlation between experimental points and values predicted by the Temkin model compared to the other models. This clearly confirms the influence of interaction effects of adsorbates loaded on the adsorption processes.

Biography:

Chaiporn Vongpisal is a lecturer in the Department of Material Handling and Logistics Engineering, Faculty of Engineering, King Mongkut’s University of Technology North Bangkok, Thailand. He received a M.Eng in Industrial Engineering from Chulalongkorn University in 1987. His research interests are in the areas of human factors engineering/ergonomics and supply chain management.

Abstract:

Thailand’s national statistical report indicates that construction is the most dangerous work. Construction industry has the largest number of fatalities and injuries. The purpose of this research is to examine the safety climate and work system characteristics in construction site environments in Thailand. Findings from statistical analysis of construction accidents show major factors affecting workers’ behaviors that can lead to incidents and accidents. Practical implications from this research for preventing major causes of construction accidents are discussed. This research can benefit workers, contractors, and owners by providing them with the importance of the role of organizational management, workers’ involvement, and supportive environments to achieve better safety performance.