14 Articles Published

1. ASSESSMENT OF ARSENIC POLLUTION IN WATER FROM TALVAR RIVER, KURDESTAN PROVINCE, IRAN

Authors: AZIM RABIEE M , PARIZANGANEH A.H , ZAMANI A.A

Abstract: Toxic elements like heavy metals are natural constituents of the earth’s crust and a number of these elements are biologically essential at trace levels and play an important role in human health. Arsenic is a ubiquitous element in the environment, which is found in trace amounts in rocks, water, soils, and plants and even in air. It is concentrated in many ore deposit types, and may cause environmental hazards due to unwanted delivery of this element and other associated elements (Zn, Ni, Mn and Sb) in the environment. Talvar river basin located in NW Iran, is a significant mineralized zone and the most famous and important As-Au mine in Iran is located here. This paper attempts to document the concentration of arsenic in surface waters. Water samples collected from Talvar stream indicate high content of as which ranges from 0.001 to 0.286 mg/l- 1 in water samples. The anomalously high background of trace metals in the area and its exposure to weathering is considered to be the main s

Keywords: Heavy metals, Arsenic, Talvar River, Kurdestan Province, Iran

Pages: 1 - 4 | DOI: 10.15224/978-1-63248-075-0-37

2. SELENIUM PHYTOREMEDIATION IN WILD PLANTS GROWING NATURALLY IN THE GUMUSKOY (KUTAHYA) MINING AREA, TURKEY

Authors: AHMET SASMAZ , BUNYAMIN AKGUL , MERVE SASMAZ

Abstract: This study investigated selenium uptake and transport from the soil to 12 plant species in the mining area of Gumuskoy (Kutahya), Turkey. Plant samples and their associated soils were collected and analyzed for Se content by ICP-MS. Mean Se values in the soils, roots, and shoots of all plants were 0.9, 0.6, and 0.8 mg kg−1, respectively. The mean enrichment factors for roots (ECR) and shoots (ECS) of these plants were 0.78 and 0.97. The mean translocation factors (TLF) were 1.33. These values indicate that all 12 plant species had the ability to transfer Se from the roots to the shoot, but that transfer was more efficient in plants with higher ECR and ECS. Therefore, these plants may be useful in phytoremediation in rehabilitating areas contaminated by Se because their ECR, ECS and TLFs are greater than 1.

Keywords: Selenium uptake, wild plants, phytoremediation, mining area

Pages: 5 - 9 | DOI: 10.15224/978-1-63248-075-0-38

3. A SOLVENT EXTRACTION DESIGN FOR SEPARATION-RECOVERY OF HEAVY METALS USING AMIC ACID EXTRACTANTS

Authors: H. SOLTANI, M. GHORBANLOO , M. R. YAFTIAN, ZAMANI A.A

Abstract: A Solvent Extraction Design for Separation-Recovery of Heavy A multistep solvent extraction design based on the application of two amic acid extractants, named 2- (dibutylcarbamoyl)benzoic acid and 4-(dibutylamino)-4-oxobut- 2-enoic acid, and their mixtures with 2-thenoyltrifluoro acetone and tributylamine is presented for the separation and recovery of Pb2+, Cd2+, Zn2+, Co2+ and Ni2+ ions from industrial wastes and end-of-life products. Metals Using Amic Acid Extractants

Keywords: Amic acid ligands, Solvent extraction, Heavy metal

Pages: 10 - 12 | DOI: 10.15224/978-1-63248-075-0-39

4. EFFECT OF PRESSURE ON ELECTRICAL RESISTANCE OF SNSEREX (X=0.1, 0.2, 0.3, 0.4) (DVT) GROWN CRYSTALS

Authors: G. K. SOLANKI , PRATIK PATANIYA

Abstract: Rhenium dopped Tin monoselenide crystals have been grown by Direct Vapour Transport (DVT) technique using two zone horizontal furnace by trial and error method. The results of electrical resistance measurements under pressure on single crystals of SnSeRex (x = 0.1, 0.2, 0.3, 0.4) (DVT) are reported. Measurements up to 4GPa are carried out using Bridgman anvil set up. There is no clear indication of any phase transition till the highest pressure is reached in these measurements.

Keywords: Crystal growth, Bridgman anvil, high pressure

Pages: 13 - 15 | DOI: 10.15224/978-1-63248-075-0-40

5. EPIDEMIC MODEL FOR EBOLA DISEASE

Authors: DIPO ALDILA , EDY SOEWONO , TRI JULIANSYAH M. SAMBAS

Abstract: Outbreaks of Ebola disease in early 2014 in West Africa is a major highlight for researchers throughout the world because of the high mortality rate. Ebola disease is caused by a virus named Ebola virus which can be transmitted from infected humans to healthy humans through direct contact with their body fluids. But there is another evidence that Ebola virus can be transmitted through the bodies of humans who recently died from the disease. Because of that, this epidemic model for Ebola disease is built by considering the number of human bodies who recently died from the disease. The epidemic model is constructed with a SEIRD model, in which the addition D compartment represents the number of human bodies who recently died from Ebola disease. Two control parameters are included in the model in the form of a rate of isolation of infected persons and the expose period of the dead bodies. The basic reproductive number is obtained and sensitivity analysis of is shown.

Keywords: Basic Reproductive Number, SEIRD model

Pages: 16 - 20 | DOI: 10.15224/978-1-63248-075-0-41

6. NEAR ENDEMIC COEXISTENCE IN A MODEL OF DENGUE AND CHIKUNGUNYA

Authors: EDY SOEWONO

Abstract: Chikungunya and dengue are re-emerging diseases which are transmitted by Aedes spp. mosquitoes. Although originated from a different location, as the human mobility increases a concurrent outbreak may happen in other places. A mathematical model of chikungunya and dengue transmission with a control is constructed in the framework of SEIR-SEI model. The model is expressed in the form of a 13-dimensional system of ordinary differential equations to describe the dynamics of compartments within human and mosquito populations. We find three equilibrium points and discuss its stability. By using the next generation matrix, we obtain two thresholds represent the basic reproduction number that related to chikungunya and dengue. We show that although there is no coexistence equilibrium, the two diseases could coexist for a relatively long period of time. In terms of control, we investigate the effect of fumigation treatment as a constant parameter in the model. Our analysis and simulation resul

Keywords: Chikungunya, Dengue, Endemic Equilibrium, Basic Reproduction Number

Pages: 21 - 25 | DOI: 10.15224/978-1-63248-075-0-42

7. INTERACTION BETWEEN AEDES AEGYPTI MOSQUITOES WITH AND WITHOUT WOLBACHIA BACTERIA

Authors: EDY SOEWONO , ASEP K. SUPRIATNA , DHITA S. Y. S. WALUYO

Abstract: Dengue disease is still a serious problem in many tropical countries which risks nearly 40% of the world population. There are some intervention programs to eliminate the disease, however they seem unsuccessful so far. Many creative solutions are explored to overcome the disease since some conventional solution, such as spraying the mosquitoes with insecticides, have created more problems (e.g. resistance to the drug). The introduction of wolbachia-infected mosquitoes into the wild Aedes aegypti population is among the new method to control the transmission of the disease. In this paper we develop a mathematical model to investigate the possibility of non coexistence of these two mosquitoes populations. The analysis of the model shows that the introduction of wolbachia-infected mosquitoes is promising, since it can replace the natural population once they are release into the wild

Keywords: dengue, Aedes aegypti, wolbachia-infected, coexistence equilibrium, competitive-exclusion equilibrium.

Pages: 26 - 30 | DOI: 10.15224/978-1-63248-075-0-43

8. ACCURATE TIME SERIES CLASSIFICATION USING PARTIAL DYNAMIC TIME WARPING

Authors: HAEMWAAN SIVARAKS , PHONGSAKORN SATHIANWIRIYAKHUN

Abstract: Dynamic Time Warping (DTW) has been widely used in time series domain as a distance function for similarity search. Several works have utilized DTW to improve the classification accuracy as it can deal with local time shiftings in time series data by non-linear warping. However, some types of time series data do have several segments that one segment should not be compared to others even though DTW can naturally warp across those segments. In this paper, we propose PartialDTW distance measure that utilizes domain knowledge about special characteristics of different sections of the data to limit the warping path. The experiment shows that our PartialDTW has much better performance when compare with other well known algorithms.

Keywords: Dynamic time warping, DTW, PartialDTW, time series classification

Pages: 31 - 35 | DOI: 10.15224/978-1-63248-075-0-44

9. POLITICAL TRENDS ANALYSIS IN SOCIAL NETWORKS USING HIDDEN MARKOV MODEL

Authors: KHURRAM MAHMOOD , NAZISH RAFIQUE , ZAINAB NAYYAR

Abstract: The main purpose of analyzing the social network data is to observe the behaviors and trends that are followed by people. How people interact with each other, what they usually share, what are their interests on social networks, so that analysts can focus new trends for the provision of those things which are of great interest for people so in this paper an easy approach of gathering and analyzing data through keyword based search in social networks is examined using NodeXL and data is gathered from twitter in which political trends have been analyzed and then its statistical calculation is done by applying hidden markov model on the data. As a result it will be analyzed that, what people are focusing most in politics.

Keywords: social networks, keyword searching, NodeXL, twitter, hidden markov model.

Pages: 36 - 40 | DOI: 10.15224/978-1-63248-075-0-45

10. CONVERTING WASTE AGRICULTURAL BIOMASS INTO AN ENERGY SOURCE: A POLICY FRAMEWORK

Authors: A. G. THUSITHA SUGATHAPALA

Abstract: The importance of the management of waste agricultural biomass is highlighted and a generic methodology for the development of policy framework in the promotion of waste agricultural biomass to energy conversions is presented. A stepwise process covering data collection and review, policy drivers, policy recommendations and policy coherence, with monitoring and continuous improvements is proposed. It is concluded that the establishment of a sound policy framework would enhance the benefits of the sector development, particularly contributing to the achievement of national development targets in genera

Keywords: waste agricultural biomass, policy framework, waste mangement, renewable energy

Pages: 41 - 46 | DOI: 10.15224/978-1-63248-075-0-46

11. MEGASONIC FREQUENCIES OPERATING IN THICKNESS MODE TRANSDUCERS ON REMOVAL OF NANO- DIMENSIONAL AND SUB-MICRON PARTICLES FROM CERAMIC COMPONENTS

Authors: M.J. GOODSON , TERRY LIM

Abstract: This study investigates the cleaning performance of high intensity megasonic frequencies operating in thickness mode transducers on removal of nano-dimensional and sub-micron particles from ceramic components. The effect of various megasonic frequencies such as 280 kHz, 360 kHz and 470 kHz on 3rd stage cleaning and final cleaning was studied for low temperature co-fired ceramic components. The multiple extractions study was carried out for various frequencies to measure the surface cleanliness, maximum cleaning potential and also to see the erosion propensity. Based on multiple extraction study the design of experiments was formed to develop the best cleaning process i.e higher cleaning efficiency and lower standard deviation. The result indicates that 3rd stage cleaning with 280 kHz followed by 470 kHz as final cleaning and 280 kHz followed by 360 kHz final cleaning provides significantly higher particle removal hence higher cleaning efficiency and lower standard deviation as compared

Keywords: megasonic sweeping, thickness mode transducers, cavitation intensity, particle removal, laser particle counting, nano, submicron

Pages: 47 - 51 | DOI: 10.15224/978-1-63248-075-0-47

12. HYDRAULIC CHARACTERISTICS OF CONICAL SHAPE DIFFUSER FOR AEROBIC BIOREACTOR

Authors: JU-SIN PARK , MYUNG-HAN KO , GIAN PAOLO O. BERNARDO

Abstract: This paper mainly discussed the hydraulic characteristics of conical type air diffuser made of rigid plastic with opened hole structures using numerical and empirical method. The unique conical shape of air diffuser prevented fine air bubbles from merging after injection from air diffuser nozzle. Furthermore, opened holes structures made lower pressure drop compare than that of membrane shape of air diffuser made of EPDM in water, owing to elimination of force which was required to expand rubber membrane of EPDM air diffuser. Due to unique morphology of air diffuser, fine air bubbles showed long retention time and higher SOTE (standard oxygen transfer efficiency) comparing than that of EPDM membrane air diffuser with same blower conditions to inject air into aerobic bioreactor system.

Keywords: air diffuser, aerobic bioreactor, conical shape air diffuser, high efficiency, low pressure drop

Pages: 52 - 56 | DOI: 10.15224/978-1-63248-075-0-48

13. SYNTHESIS AND OPTIMIZATION OF EPOXIDIZED CASTOR OIL IN THE PRESENCE OF A SULPHONATED POLYSTYRENE TYPE CATION EXCHANGE RESIN CATALYST

Authors: SANJAY KUMAR NAYAK , SMITA MOHANTY , SUDHA G S

Abstract: Epoxidized castor oil (ECO) has synthesized with glacial acetic acid and hydrogen peroxide in the presence of a catalyst. Here hydrogen peroxide (H2O2) acts as an oxygen donor and glacial acetic acid acts as an active oxygen carrier. Epoxidized oils have respectable oxirane oxygen content and highly reactive oxirane rings. The formation of the oxirane ring was confirmed by Fourier Transform Infrared Spectroscopy (FTIR) analysis and Nuclear Magnetic Resonance (NMR) studies. Vegetable oil-based epoxies are sustainable, renewable and biodegradable. These Epoxidized oils can replace petroleum derived materials in numerous industrial applications

Keywords: Castor oil, Epoxidation, Catalyst

Pages: 70 - 72 | DOI: 10.15224/978-1-63248-075-0-74

14. EVALUATION OF RECYCLABILITY OF WASTE MOBILE PHONE PLASTICS

Authors: SATEESH BONDA , SANJAY KUMAR NAYAK , SMITA MOHANTY

Abstract: Plastic components from waste mobile phones were sorted and characterized using visual, spectroscopic and thermal methods. The mechanical properties of the recovered plastics were investigated by comparing with commercially used reference materials. The results revealed the practical feasibility of these recovered plastics to make new products through mechanical recycling. The samples were also tested for brominated flame retardants (BFRs) using gas chromatography-mass spectrometry (GC/MS) technique and the results indicated the absence of BFR in recovered plastics, hence these can be processed without any risk of BFR toxicity.

Keywords: Mobile Phone Waste Valorisation, Plastics identification, Estimation of Recyclability, Plastics Recycling

Pages: 62 - 65 | DOI: 10.15224/978-1-63248-075-0-50