Investigation of the silver nanoparticle (Ag NPs) effects on the fertility potential of rats
Nanotechnology is rapidly growing science of producing and utilizing nano-sized particles that measure in nanometers. Now-a-day we are using nanoproducts in various field. Of these silver nanoparticles are playing a major role in the field of nanotechnology and nanomedicine. But it has toxic effect in biological systems, because of active oxygen production. They can also easily pass the cell membranes, blood-brain barrier as well as blood- testis barrier. In this study we try to investigate the effect of silver nanoparticles (Ag NPs) on the sperms quality in rats. In this study 75 male rats (body weight 150±20 gram, 4week year old) were used which were divided into 5 groups (1 control group and 4 experimental groups), with 15 rats in each group. Different dosages of Ag NPs (25, 50, 100, 200 mg/kg) were administered to the experimental rats in a period of spermatogenesis (35 days). After this time interval they were killed by spinal cord severing method, their epididymides were separated and in order to analyze the mobility of the sperms, a homogenous solution was prepared in the ham's medium. Moreover in order to study the morphology of sperms we used the Giemsa stained samples. Finally statistical data was analyzed by T-Test and SPSS software. Results showed by (p<0/05) administration of silver nanoparticle has a significant effect on the reduction of sperm mobility and its natural morphology (p<0/05). The results showed that Ag NPs decreased sperm mobility and worse natural morphology, so can affect fertility potential of lab animals.
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Issues in housing delivery systems and customer satisfaction
The Malaysian housing industry landscape is evolving and increasing in complexity, with increasing demand, growing competition and frequent reports of abandoned projects, poor quality and delayed delivery. Confronted with these issues, the industry has never been in a greater need to provide answers to the perennial questions; Are house buyers really satisfied? And do the private developers build to satisfy their house buyers? By looking at key facts and trends, this paper examines the latest developments in the housing delivery systems in Malaysia and the multiple concepts associated with customer satisfaction. It explores the current issues faced by housing developers and house buyers in the Malaysian housing industry.
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Macroeconomics Variables and Its Impact to Mudharabah Investment Deposits in Malaysia
This purpose of this paper is to study the impact of macroeconomics variables to Mudharabah Investment Deposits in Malaysia. It intends to examine the relationship and the significance influence between Gross Domestic Product (GDP), Rate of Return (ROR), Inflation Rate (INF) and Investment Deposits in Malaysia. Analysis was done using the Statistical Package for Social Science (SPSS). Pearson Correlation used in determining the relationship between the variables while three difference regression model (enter, forward, backward) used to determine the significance influence between the variables. The data gathered from Monthly Statistical Bulletin, Bank Negara Malaysia from 2003 until 2011. ROR showed there is significant strong positive relationship with Mudharabah Investment Deposit in Malaysia. It was found that by using three difference regression models, only one predictor namely Rate of Return (ROR) had significant influence with Mudharabah Investment Deposits while Gross Domestic Product (GDP) and Inflation Rate (INF) had no significant influence with Mudharabah Investment Deposits.
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MHD Flow Past an Impulsively Started Vertical Plate with Variable Temperature and Constant Mass Diffusion in the Presence of Hall Current
In the present paper, MHD flow past an impulsively started vertical plate with variable temperature and constant mass diffusion in the presence of Hall current is studied. The fluid considered is an electrically conducting, absorbing-emitting radiation but a non-scattering medium. The Laplace transform technique has been used to find the solutions for the velocity profile and Skin friction. The velocity profile and Skin friction have been studied for different parameters like Schmidt number, Hall parameter, Magnetic parameter, Mass Grashof number, Thermal Grashof number, Prandtl number, and Time. The effect of parameters is shown graphically and the values of the skin-friction for different parameters have been tabulated.
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Molecular structure, Vibrational spectra, non-linear optical properties, and docking study of 2-Methylidene -4-oxo-4-[(2, 4, 5-trichlorophenyl) amino]butanoic acid
In this work, the Fourier transform Raman and Fourier transform infrared spectra of 2-Methylidene -4-oxo-4-[(2, 4, 5-trichlorophenyl) amino] butanoic acid were recorded. The structural and spectroscopic analyses of the above compound were made by using B3LYP/ DGDZVP2 and DGTZVP basis sets. The detailed interpretation of the vibrational spectra has been carried out with the aid of VEDA program. The observed and calculated frequencies are found to be in good agreement. NMR spectra have been recorded and analysed. To investigate microscopic second order non linear optical behavior of the title compound, the electric dipole moment ?, the polarizability ? and hyper polarizability ? were computed. According to our calculation, the title compound exhibiting non-zero ? total value revealing microscopic second order NLO behavior. The value of HOMO-LUMO, Mulliken and natural charges have been calculated and analyzed. The natural bond orbital analysis confirms the occurrences of intra-molecular charge transfer interaction. Electrostatic potential surface has been plotted for predicting the structural activity relationship. Global reactivity descriptors and Fukui functions have been calculated for predicting the chemical reactivity and the stability of the chemical system. To test the biological activity of the title compound docking studies have been carried out.
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Multiple Intelligences as a Mean of Giftedness Identification: A Reflection on the Saudi System
This paper provides an overview of the literature that involves the gifted education. It started with exploring the theories of intelligence, as some consider it as a basic characteristic of giftedness. Afterwards, the most fundamental theories of giftedness have been explored in depth. This was followed by the characteristics of gifted students, in order to clarify how their giftedness is manifested through their behaviour. The following section focused on the methods that are being used to identify gifted students. Particularly, the researcher advocates multiple intelligences theory as a mean of identification. The researcher, then, discusses the premises, with a special attention to the Saudi educational system, of the current paper and forward suggestions for future research.
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Natural Language Interface to Databases: Development Techniques
In the world of computing, information plays an important role in our lives. One of the major sources of information is database. Database and Database technology are having major impact on the growing use of computers. Almost all IT applications are storing and retrieving the information or data from the database. Database Management Systems (DBMS) have been widely used for storing and retrieving data. However, databases are often hard to use since their interface is quite rigid in co-operating with users. For storing and retrieving the information from database requires the knowledge of database language like SQL. Structured Query Language (SQL) is an ANSI standard for accessing and manipulating the information stored in database. However, everyone may not be able to write the SQL query as they may not be aware of the syntax and structure of SQL and database respectively. The purpose of Natural Language Interface is to allow users to compose questions in Natural Language and receive the response also in Natural Language. The idea of using Natural Language instead of SQL has promoted the development of new type of processing called Natural Language Interface to Database(NLIDB). This paper discuss about an introduction of Intelligent Database System, Natural Language Processing and Natural Language Interface to Database. It also gives a brief overview of subcomponent of NLIDB, techniques used to development of NLIDB along with its architecture.
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Older Pupil’s Views on the Ghana School Feeding Programme: A Case of Yikpee D/A Primary School in Lawra District of the Upper West Region
Previous studies on Ghana's school feeding programme have largely taken a quantitative approach in assessing and analyzing its impact on increases in enrolment, attendance, retention, short-term health and nutritional benefits. This study employed qualitative instruments, using a semi-structured interview guide and observation checklists on five pupils in one school Yikpee D/A Primary School in order to fill the gap in the quantitative studies as well as look at the views of older students on the School Feeding Programme. The results showed that older pupils often came from poor and illiterate families,-whose parents were peasant farmers and that for those children, their decisions to enroll in school were informed by a desire for gainful employment, escape from farming and the ability to read and write in the future. It was also revealed that it was not the food per se that attracted these children to school; but the fact that the school was viewed to be a welcoming place for learning and opportunity for them to achieve their future goals. Although the pupils were in favour of the feeding programme, they wished it stopped because it distracted their attention in class. The study has thus put forward some policy recommendations on the school feeding programmes which include the need to seek the views of target beneficiaries on whether, where and when to implement the programme as a policy intervention before final decisions are made to cover all neighbouring schools.
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On Identification of Distribution of Three Independent Markov Chains Subject to the Reliability Criterion
In this paper we solved the problem of identification of distribution one of many hypotheses for three independent objects by study of simple homogeneous stationary finite state of Markov chains.
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Optical and mechanical studies on unidirectional grown Tri-nitrophenol p-hydroxyacetophenone single crystal
The tri-nitrophenol p-hydroxyacetophenone (TNPHAP) single crystal was grown from aqueous solution by Sankaranarayanan-Ramasamy (SR) unidirectional growth method. The grown crystal with cylindrical shape about 12 mm diameter and 55 mm length was obtained by S-R technique. The formation of TNPHAP was confirmed by single crystal and powder X-ray diffraction studies. The optical properties of grown crystal has been analyzed by UV-Vis absorption studies. The mechanical strength of the grown crystal has been studied using Vicker’s microhardness tester. The dielectric constant and dielectric loss was studied as the function of frequencies. The results are discussed in detail.
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