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Characterization of P(Hema-Gma)-Ida Membrane to Adsorbing Leather Dye
Full text linkDifferent chemical substances and too much water are used during leather production. Therefore, the waste water load of the leather industry is harmful to the environment. One of the pollution source is the production of leather coloring process is a further need to focus on the removal of dye waste waters subject. These water-soluble dyes have a small organic molecular size. Besides the environmental hazards that these dyes cannot be underestimated, they also have harmful effects on human health.
In this study, poly (hydroxyethyl methacrylate-glycidyl methacrylate) p (HEMA-GMA) hydrogel membranes were synthesized by UV polymerization method. The hydrogel synthesized is modified with imino diacetic acid (IDA) and then chelated with trivalent chromium ions. The chelating capacity of the membranes were determined according to the time, pH and concentration parameters. Dynamic swelling test, elemental analysis, ninhydrin analysis and adsorption, desorption and reusability performances of membranes were also determined. As a result of the analyzes, it was understood that the hydrogel membrane had high adsorption capacity. The adsorption capacity of the p (HEMA-GMA) -IDA-Cr (III) hydrogel membrane did not decrease even after 5 desorption. At the end of the fifth cycle, the membrane was found to have a dye-binding capacity of about 92%. According to these results, the reusable property of the membrane also makes it cost effective as well as effective adsorption
Preparation and Characterization of Nano Titania modified PVA-Pectin polymer electrolyte membranes for DMFC
Full text linkIn this study, poly vinyl alcohol and pectin are in situ cross-linked using dual cross-linker comprising a mixture of sulfosuccinic acid and glutaraldehyde followed by solvent casting.Titanium dioxide nanoparticles are incorporated into polymer solutions that controls alignment and disentanglement of polymer chains at molecular level. It is shown that rational design of membrane microstructure with proper arrangement of hydrophobic and hydrophilic domains has been formulated by blending PVA with PC. Water sorption through nanocomposite membrane enhanced when optimum quantity of titanium dioxide particles are present. In addition, titanium dioxide nanoparticles help to provide more inter-connected proton conducting pathways and acts as reinforcing units. Through the hydrogen bonds formed between surface functional groups of titanium oxide nanoparticles and polymer chains, protons are transferred through the membrane both by hopping and vehicular mechanisms. Titanium dioxide nanoparticles also act as fillers and effectively prevent the methanol permeation. Polymer voids are occupied by the presence of Titanium dioxide nanoparticles that selectively allow protons to pass through form anode to cathode side. Both improved proton conductance and lower methanol permeability, electrochemical selectivity of nano Titanium dioxide modified PVA-Pectin polymer electrolyte membrane is enhanced. With further enriched proton conductivity by the presence of titanium dioxide nanoparticles, fabricated pectin polyvinyl alcohol hybrid nanocomposite membrane exhibit higher electrochemical selective factor
Design and Implementation of the Service-Aware Traffic Engineering (SATE) in the LISP Software- DefinedWireless Network (LISP-SDWN)
Full text linkSoftware Defined Wireless Networks (SDWN) have been considered to have a feasible architecture that enables the fast deployment of new services and solutions in response to the explosion in the number of users and network traffic. Currently, the telecommunications sector is ensuring flexibility in network management and configuration. However, fluctuations in traffic are still beyond the control of SDWN providers. This paper suggests ways to manage fluctuations of traffic with service type. We propose the design of a service-aware network management service that achieves the maximum network utilization among heterogeneous Radio Access Networks (RANs) as a form of Traffic Engineering (TE). In this paper, we implement and test the Service-Aware Traffic Engineering (SATE) that distributes the network traffic to RANs according to the service type of traffic in the network layer. The traffic shift latency (e.g., from an LTE RAN to a Wi-Fi RAN) is considered as a performance metric that does not affect the end-to-end latency of some network applications (e.g., VoIP), and it is 3.51ms from our testbed. Therefore, it might not affect the end-to-end latency of the VoIP application in the telecommunications. SATE is implemented using OpenDaylight (ODL) and Ingress/Egress Tunneling Routers (xTRs) running on Vector Packet Processing (VPP)
Development of Mobile Fatwa Application for the Selangor State of Mufti Department
Full text linkFatwa is an important reference of Muslims to seek of contemporary explanations regarding the Islamic law on new matters in their life affairs. It is the opinion of the scholars authoritative as mufti or related posts given mandate by the government to proclaim it as a guide to Muslims according to their waqi'. However, it is not widely accessed by the community to be guided in their lives. This e-fatwa application development initiative is intended to help facilitate information on fatwa disseminated to the public. It will be developed based on android mobile operating system since it is very popular and widely used in the current technology. The method of development of this apps is through comparison with other existing applications before provide a new and improve our own apps. Then it will assess the effectiveness of functionality of the apps from the perspective of the end user. The target user of this apps is for Muslims and specifically to Selangor state in Malaysia
Influence of Crosslinking Agent Concentration on The Microencapsulation Parameters of Collagen Hydrolysate-Walled Microcapsules
Full text linkDespite being a lot of discussion, a large amount of chrome tanned leather is still being tanned in the world. After tanning with chrome, chrome solid leather wastes occurred. These chrome wastes arise during mechanical processes such as trimming, shaving, buffing and splitting. These solid wastes containing trivalent chromium and may be oxidized to hexavalent chromium by the appropriate conditions in the landfill areas. Increasing environmental awareness and regulations have been making great pressure on the leather industry. Nowadays, solid leather wastes tanned with chromium are assessed by hydrolysis with the enzyme in high alkaline media and can subsequently be used for several applications. However, there is still no definitive solution to these chromed solid leather wastes. In this study, microcapsules of collagen hydrolysate cross-linked with glutaraldehyde containing Lavender essential oil were prepared by coacervation method. The influence of crosslinking agent concentration on the oil load (%), oil content (%) and encapsulation efficiency (%) of lavender oil microcapsules were investigated. As the crosslinking agent concentration increased, the oil load (%) decreased but oil content (%) and encapsulation efficiency (%) of microcapsules increased. The best result obtained by using 5 g of collagen hydrolysate, 7 ml of glutaraldehyde and 7 ml of lavender oil
Design of Cross Flow Heat Exchanger Using Performance Charts
Full text linkThe manuscript reviews the various steps involved in the design of a cross flow heat exchanger. Performance charts describing the thermal performance of the heat exchanger in terms of dimensionless parameters are used to develop the preliminary design of the heat exchanger. The preliminary design involves choosing the required number of heat exchanger passes, the required number of transfer units (NTU) and the capacity rate ratio for a given heat transfer application. These dimensionless parameters account for material, flow and thermal characteristics of the heat exchanger. In addition, NTU accounts for heat exchanger size, flow configuration and the type of heat exchanger. Since the preliminary design accounts for all the major characteristics of the heat exchanger, this approach is beneficial in optimizing the heat exchanger during the design phase. Performance charts indicate that indefinitely increasing the surface area (or NTU) does not increase the rate of heat transfer. There exists a threshold limit beyond which increasing the surface area adds no benefit to the heat exchanger. Instead, it just adds weight, material and cost of the heat exchanger. It must be noted that an undersized heat exchanger for a given application may not deliver the required heat transfer and while an oversized heat exchanger will increase the capital cost. Hence, it is very important to choose the right parameters during design of a heat exchanger. From the preliminary design, the detailed design for the heat exchanger can be readily extrapolated. The benefits of using performance charts in the design of a cross flow heat exchanger are described in the manuscript
Using mobile device in-store: which implications for retailers?
Full text linkThe widespread mobile connectivity has not only changed the way we interact and communicate, but has significantly impacted on consumer decision-making process. Consumers in a retail setting use mobile devices with different purposes: finding information on the web, comparing pricing and purchasing goods and services. Therefore, it becomes crucial to understand how the mobile influences the decision-making process as well as the purchasing decisions in-store. This topic is of great importance in grocery sector since retailers and manufacturers devote many investments in instore marketing activities with the aim to influence consumers’ decisions and stimulate impulse purchases. The rise of the mobile channel has produced disruptive changes in shopping habits designed to gradually reduce the effectiveness of in-store marketing levers in influencing shopping behavior. Manufacturers and retailers are worried that the mobile could potentially distract the customer from the products and services offered within the store. Our research intends to explore the impact of in-store mobile technology use on shopper behavior instore in order to understand its effects on planned versus unplanned purchases. According to our preliminary results, consumers using mobile technology instore make less unplanned items and fail to purchase more planned items. Moreover, the use of mobile technology negatively affects shoppers’ ability to recall in-store stimuli. Our findings are interesting for both retailers and manufacturers who are looking for new ways to better address their marketing efforts and increase consumers’ engagement instore
Analysis of Total Quality Management dimensions towards Market Orientation in Electric Utility Industry in Malaysia: A Structural Approach
Full text linkTotal quality management (TQM) philosophy and principle targeting on the regular changes for customer satisfaction, were proposed to be used in guiding the change process in electric utility industry towards market orientation through quality improvement of TQM practices. The aim of this study to analyses the TQM dimensions of; employee relation, training, and customer focus towards market orientation of electric utility industry in Peninsular of Malaysia. Total of 127 questionnaires distributed and 80 questionnaires useable for further analysis. A structural approach using Partial Least Square was adopted to analyze this relationship. The findings showed that all studied variables influence market orientation. Future direction was proposed for further research
Enhancing Two Standard Privacy Preserving to Improve the Security Policy in Cloud Environment
Full text linkCloud computing is emerging computing model where the data owners are outsourcing their data into the cloud storage. By outsourcing the data files into the cloud, it gives many benefits to the large enterprises as well as individual users for accessing database security. In data base Storage management systems to cloud it still faces a number of fundamental and critical challenges, among which storage space and security is the top concern. We consider the problem of processing range query search over a confidential numeric attribute K in an outsourced setting of cloud computing. To ensure the correctness of user and user's data in the cloud, we propose a multilevel round random key policy third party authentication system in crypto policy standard. In addition to simplified data storage and secure data acquisition. Also, we consider processing range query search over a confidential numeric attribute with two main challenges. First, the confidentiality requires hiding the value and the relative order of the attribute in records from the cloud server. Finally, we will perform security and performance analysis which shows that the proposed scheme is highly efficient for maintaining secure data storage and acquisition
An Intelligent Forecasting Model for Rowing
Full text linkAccording to the current International Rowing Federation, the distance from the rowing competition is 2000 meters, the match time depending on the different items. The boating operation relies on the paddle hand of the boat to push the boat forward quickly with the work done by the paddle hand. As a result, boating wants to pass the endpoint at less time in a specified distance, and must increase the frequency of rowing per minute on the ship as a power paddle. Increasing the strength of each paddle allows the ship to paddle at the most force of each oar. Each oar hand puts forward the required quality requirements, that is, strength, speed, muscular endurance and rhythm. At present, many scholars have put forward many methods to study sports monitoring at home and abroad, but this sport is rarer in rowing.
Therefore, this study will present the intelligent prediction of rowing performance model to predict the performance of the contestants, including:
We use four weight methods to defuzzify: (a) dynamic weight forecasting, (b) equal weight, (c) sequential weight, and (d) trends weight.
Finally, the forecasting value is optimized by the adaptive adjustment method.
Finally, this study uses the public information provided by the International Rowing Alliance website as a training prediction model. The test results are compared with the weight-cutting and forecasting methods