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Search Results: 1 - 10 of 696 matches for " Mina Wanis "
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Voltage profile generation for simultaneous multi-protein detection in western blot analysis  [PDF]
Matthew Blair, Mina Wanis, Gaurav Swarnkar, Hiroki Yokota, Stanley Chien
Journal of Biomedical Science and Engineering (JBiSE) , 2012, DOI: 10.4236/jbise.2012.59067
Abstract: Western blotting is a popular technique for examining expression levels of proteins using gel-based electrophoretic fractionation followed by blotting and antibody reactions. Although this is a mature technique, one of the major limitations is the need to prepare an individual electrophoretic gel for each of the protein species to be analyzed. Since most analyses require the detection of multiple protein species, a procedure that allows utilization of a single gel for detecting multiple protein species should significantly save time and resources. In this paper, we developed a novel multiprotein detection device, which enabled simultaneous detection of several proteins species from a single electrophoretic gel. In this device, a protein transfer unit utilized a multi-anode plate that generated a non-uniform voltage profile. This voltage profile enabled uniform transfer regardless of molecular mass of proteins. In vitro experiments using samples, isolated from boneforming osteoblast cells, showed that the expression levels of 5 - 7 different proteins were detectable in the presence and absence of mechanical stimulation that activated genes necessary for bone formation. The result supports the notion that through simultaneous detection of multiple protein species, the described device contributes to reduction in procedural time and sample amounts, as well as a removal of variations among multiple gels.
Structural Deformation Monitoring and Analysis of Highway Bridge Using Accurate Geodetic Techniques  [PDF]
Ashraf Abd El-Wanis Beshr
Engineering (ENG) , 2015, DOI: 10.4236/eng.2015.78045
Abstract: As the new materials and technologies are increasingly applied to construction of civil infrastructures such bridges, dam and tunnels, the need for structural monitoring systems, maintenance and restoration becomes more important and vital. Bridges are widespread in every society and affect its human, social, economical and cultural aspects. Measurements and monitoring of the structural deformation of highway bridges have an essential role in structural safety. This paper investigates an integrated monitoring system for estimation of the deformation behavior of one of the important reinforced bridges in Egypt. The applied data for analysing the deformation of any structure from geodetic observations are the coordinates of several monitoring points distributed on the structure itself. The coordinates of these points are calculated with respect to control fixed points. So any deviations in the control points coordinates between the two successive epochs of observations will affect the values of structural deformation. To overcome this shortage, applying the multi-parameter transformation will be studied in this paper for structural health monitoring of bridges. Statistical tests using F-Fisher criterion with a confidence level of 98% of the geodetic observations for bridge deformation values are also presented. The results of the practical measurements, analysis of the interesting deformation technique and traffic flow around the studied highway bridge are also presented. The resulting structural deformation values from statistical tests provide a significant improvement of understanding and prediction the structure deformation values of highway bridges.
Monitoring Bridge Deformation Using Auto-Correlation Adjustment Technique for Total Station Observations  [PDF]
Ashraf Abd El-Wanis Beshr, Mosbeh R. Kaloop
Positioning (POS) , 2013, DOI: 10.4236/pos.2013.41001
Abstract:

Bridges are omnipresent in every society and they affect its human, social, ecological, economical and cultural aspects. This is why a durable and safe usage of bridges is an imperative goal of structural management. Measurement and monitoring have an essential role in structural management. The benefits of the information obtained by monitoring are apparent in several domains. In deformation analysis, the functional relationship between the acting forces and the resulting deformations should be established. If time depending observations are given, a regression could be used as a functional model. In case of stochastic model uncorrelated observations with identical variance are assumed. Due to the high sampling rate, a small time difference arises between two observations. Thus the assumed stochastic model is not suitable. The calculation has to be effected by means of auto-correlated observations. This paper investigates an integrated monitoring system for the estimation of the deformation (i.e., static, quasi-static) behavior of bridges from total station observations and studies the effect of autocorrelation technique on the accuracy of the estimated parameters and variances. The results have shown that autocorrelation technique is reduced the standard deviation of X&Y-direction about 6.7% to 29.4% and 6.5% to 15.5% of the original value, respectively, but the situation was differ in Z direction; the standard deviation in vertical component Z was increased.

The Relationship between Locus of Control, Test Anxiety, and Religious Orientation among Iranian EFL Students  [PDF]
Mina Rastegar, Nahid Heidari
Open Journal of Modern Linguistics (OJML) , 2013, DOI: 10.4236/ojml.2013.31009
Abstract:

The present study was designed to investigate the relationship between locus of control (LOC), religious orientation (RO) and test anxiety (TA) among Iranian EFL learners. Furthermore, it scrutinized the role of gender on these variables. To achieve such goals, 100 Iranian EFL students (57 females, 43 males) studying English at Shahid Bahonar University of Kerman participated in the study. These students were randomly selected from among junior and senior students majoring in English Translation and English Literature. In order to obtain the required data, three questionnaires were utilized: Rotters’s (1966) locus of control scale (LOCS) to measure participants’ level of LOC, Sarason’s (1975) test anxiety scale (TAS) to measure participants’ TA, and Allport and Ross’s (1967) Religious Orientation Scale (ROS) to determine participants’ intrinsic or extrinsic religious orientation. For analysis of data, the Pearson Product Moment Correlation and T-test were used. The results revealed that there was a significant negative relationship between ILOC and TA and a significant positive relationship between ELOC and TA. Furthermore, there was a significant positive relationship between ILOC and IRO and a significant positive relationship between ELOC and ERO. Also, there was a significant negative relationship between ILOC and TA, and a significant positive relationship between ELOC and TA. Finally, there were not any significant differences among males and females regarding ILOC, ELOC, TA, IRO, and ERO.

On the Relationship between EFL Teachers’ Job Satisfaction, Self-Efficacy, and Their Spiritual Sense of Well-Being  [PDF]
Mina Rastegar, Sholeh Moradi
Open Journal of Modern Linguistics (OJML) , 2016, DOI: 10.4236/ojml.2016.61001
Abstract: The purpose of this study was to examine the relationship among Iranian EFL teachers’ job satisfaction, self-efficacy, and their spiritual well-being. For this purpose, Job Satisfaction Survey (Spector, 1994), Teacher Self-Efficacy Scale (Tschannen-Moran & Woolfolk Hoy, 2001), and Spiritual Well-being Scale (Paloutzian & Ellison, 1982) were used to collect data. The statistical procedure of Pearson Product Moment Correlation was utilized using SPSS version 21. The results of the statistical test yielded a significant negative relationship between teachers’ job satisfaction and their spiritual well-being and there was no relationship between their job satisfaction and self-efficacy. Moreover, there was not any significant relationship between teachers’ sense of efficacy and spiritual well-being.
Does Greenhouses Gases Emissions Reduction Harms Economic Growth? A Lesson from Togolese Economy  [PDF]
Mikémina Pilo
Modern Economy (ME) , 2017, DOI: 10.4236/me.2017.88071
Abstract: The move towards lower greenhouses gases (GHGs) emissions as a solution to mitigate climate change is not costless. Focusing on Togolese economy, we assessed in this article the role played by the shift to renewable energy consumption path in the search for higher economic growth. Based on the Auto-Regressive Distributed Lagged (ARDL) model and with the help of time series data that cover the period 1983-2012, our estimates indicate that the effects of higher renewable energy consumption on per capita economic growth varies depending on time horizon. A 1% increase of renewable energy consumption reduces per capita economic growth by 2.33% in the short run while it boosts economic growth by 1.22% in the long run. These findings are partly explained by the high technological rigidity of the country. The message to be sold to policy makers is that switching from fossil energy technology to technology based on renewable energy is an expensive and time consuming process which is economically efficient only in the long run. Consequently, the country might need relatively considerable time to fully shift to a cleaner path in terms of carbon emissions mitigation. Thus, the country move towards lower GHGs emissions must be tactically managed and done progressively.
Necessity of Collaboration between Technology and Architectural Design in Order to Develop the Urban Space Quality  [PDF]
Mina Khodadad, Mohsen Sanei
World Journal of Engineering and Technology (WJET) , 2017, DOI: 10.4236/wjet.2017.54049
Abstract: Proper architectural design and appropriate usage of technology compatible with the environment in parts of a city which is called urban spaces, spaces such as parks, squares, sidewalks, shopping malls, leave a great impact on the quality of the urban life. Architectural design itself is born from technology; it means that, architecture is tied with science and technology, and is in direct contact with them. Technological innovations are one of the most important forces affecting the architectural changes. Nowadays, technological innovations are recognized as important and effective powers in development of sustainable environmental design. Today societies are constantly changing in terms of social, economic, political and technological alterations. Change is inevitable, and like all aspects of contemporary life, architecture should similarly offer an appropriate response to such changes for remaining sustainable, useful and appropriate. Architecture should also have a suitable response to laws and regulations of recent issues like safety, environment and energy conservation, and even personal security in architectural space. The purpose of this paper is, primarily an exploration of the concept of urban space, and in the second stage, it plans to review the fundamentals and impacts of using technology in urban spaces. The research method is descriptive-analytic and library research method is used for data collecting.
Chaotic Encryption Scheme Using 1-D Chaotic Map  [PDF]
Mina Mishra, Vijay H. Mankar
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2011, DOI: 10.4236/ijcns.2011.47054
Abstract: This paper proposes three different chaotic encryption methods using 1-D chaotic map known as Logistic map named as Logistic, NLFSR and Modified NLFSR according to the name of chaotic map and non-linear function involved in the scheme. The designed schemes have been crypt analyzed for five different methods for testing its strength. Cryptanalysis has been performed for various texts using various keys selected from domain of key space. Logistic and NLFSR methods are found to resist known plaintext attack for available first two characters of plaintext. Plaintext sensitivity of both methods is within small range along with medium key sensitivity. Identifiability for keys of first two of the scheme has not been derived concluding that methods may prove to be weak against brute-force attack. In the last modified scheme avalanche effect found to be improved compared to the previous ones and method is found to resist brute-force attack as it derives the conclusion for identifiability.
Identifying the dependency pattern of daily rainfall of Dhaka station in Bangladesh using Markov chain and logistic regression model  [PDF]
Mina Mahbub Hossain, Sayedul Anam
Agricultural Sciences (AS) , 2012, DOI: 10.4236/as.2012.33045
Abstract: Bangladesh is a subtropical monsoon climate characterized by wide seasonal variations in rainfall, moderately warm temperatures, and high humidity. Rainfall is the main source of irrigation water everywhere in the Bangladesh where the inhabitants derive their income primarily from farming. Stochastic rainfall models were concerned with the occurrence of wet day and depth of rainfall for different regions to model the daily occurrence of rainfall and achieved satisfactory results around the world. In connection to the Markov chain of different order, logistic regression is conducted to visualize the dependence of current rainfall upon the rainfall of previous two-time period. It had been shown that wet day of the previous two time period compared to the dry day of previous two time period influences positively the wet day of current time period, that is the dependency of dry-wet spell for the occurrence of rain in the rainy season from April to September in the study area. Daily data are collected from meteorological department of about 26 years on rainfall of Dhaka station during the period January 1985-August 2011 to conduct the study. The test result shows that the occurrence of rainfall follows a second order Markov chain and logistic regression also tells that dry followed by dry and wet followed by wet is more likely for the rainfall of Dhaka station and also the model could perform adequately for many applications of rainfall data satisfactorily.
Energy Based Simulation of Trabecular Bone Fracture Healing Using Finite Element and Fuzzy Logic  [PDF]
Mina Soleimanifar, Hamid R. Katoozian
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.45A006
Abstract:

The trabecular bone fracture healing differs from diaphyseal fracture healing, in which trabecular bone heals based on intramembraneous ossification. The process includes a small callus formation, then woven bone forms, it follows by remodeling process to form regular trabecular bone. The objective of this study was to present an energy based model to simulate bone formation and remodeling during trabecular bone fracture healing. This modeling mainly focused on the mechanical factors. The model distinguishes three basic type of tissue: bone, cartilage and soft tissue. In order to determine tissue differentiation a fuzzy controller was proposed. An algorithm was developed to link the fuzzy logic controller to a finite element model (FEM) of trabecular bone. In general, finite element analysis provides input for fuzzy controller. Based on the input data, the fuzzy system selects the type of tissue to build. Strain energy density was used as the mechanical stimulus and a new parameter was incorporated in to the healing process as the remodeling index.

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