Two Stage Evaporative Cooling Based Air Refrigeration System for very low Temperatures (Cryogenics)
Development of eco-friendly systems and energy efficient systems has been a great concern for sustainable development. In the present research paper, we are using a two-stage evaporative cooler (TSEC) consisting of two evaporative cooling chambers. The temperature drop through TSIEC can be achieved to be about 100K or below by applying the combined concept of bootstrap air refrigeration cycle and evaporative air refrigeration cycle. In this system we are using indirect evaporative cooling of compressed air in two stages of compression followed by cooling to attain very low temperature which can be used for scientific researches and cryogenics.
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Children's Psychology Development
The child is a gift given to each couple. Their growth process from children to adults plays an important role in shaping their personal qualities and behaviors. This reading is carried out in order to determine how the nature of the child is formed from a baby. This study emphasizes the child's development from the angle of cognitive and personality.
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Globalization and Iranian identity
Globalization, as a encompassing process all aspects of human life, individual and collective, in the range of identity, culture, politics and economy, has affected the complexity and ambiguity on this issue has increased. Since that globalization should be one of the main factors for renewed attention to the issue of national identity. After this process, a force for homogenization is not simple, through which a culture can destroy other identities. Iran, with the attainment of rich culture and civilization, the history of several thousand-year-old, joined the temporal sequence of their identity, respectively, and with that in different periods, different forms assumed, but never Iranian originality of the has not been altered. On the other hand, though changes in the surface layers of culture, and identity emerged, but never able to find a way into the depth of Iranian identity. The Iranian culture and civilization, with services to the development of the common heritage of human civilization, together with the various ethnic groups present in your neighborhood, your special identity that is created during extended times, and has evolved. In the process of globalization, in addition to the revolution in information and communication; two great event and important historical, in the last decade of the twentieth century, the question of identity for Iran before the Iranians raised, one of the Islamic Revolution and Islamist in new identity, after the 1980s, emerged and the collapse of the bipolar world, in the 1990s, which led to the disappearance of geopolitical balance in the political world. In this study, attempting, with descriptive - analytical method, and according to library resources and the Internet, explain Iranian identity, and to realize the opportunities and challenges of Iranian identity in the globalization process.
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Geotechnical investigation on lithomargic clay blended with quarry dust and lime and its application to slope stability problems
The coastal area of Andhra Pradesh has a hard crust on the top. These top layers of the laterite formations are highly porous but hard and strong. In between this top low level laterites and bottom high level laterites some of the beds are having size distribution between JEDI (clay) and GODI (silt) soils, but do not show the behaviour of the clay nor silt, called shedi soil (lithomargic clay). Shedi soil is the name given to the locally available whitish, pinkish/ yellowish lithomargic soil with high silt content and low bearing strength. When the shedi soil become saturated as a result of rain, it loses its strength and possess the same problems as that of dispersive soil. Usually the low lying areas of Karnataka state are usually filled up with these problematic soils. Construction on these type of soil possess problem of excessive settlement and low bearing capacity.In this paper, an attempt is made to stabilize the shedi soil of Baptla Guntur Dist Andhra Pradesh state using the quarry dust obtained from the Trident infrastructure, Bajpe and lime procured from the local market. The shedi soil was replaced by quarry dust in different proportion of 10, 20, 30, 40 and 50% by dry weight of soil whereas lime was added to soil in proportion of 2.5, 5 and 7.5% by dry weight. A series of laboratory experiments were conducted on the unstabilised bas well as stabilized specimens. All the specimens were prepared at OMC and MDD.
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Bowenoid papulosis: About a case with review of the literature
Described for the first time by Wade and Kopf in 1978, The Bowenoid papulosis is a vulvar intraepithelial neoplasia of high grade, due to an infection of oncogenic HPV. This affection affects essentially the young adult with a mean age of 30 years. The classic clinical aspect is a pigmented or pinkish papule, but it can also be polymorphic, often multifocal, which could affect the perineal and perianal areas.The evolution is often mild with a possibility of spontaneous regression, but there is a probability of a transformation into an invasive carcinoma especially by the immunosuppressed. The treatment is essentially conservative by local destruction of the lesions.We report the case of a female patient of 31 years, without pathological individual history, and who presented papular isolated vulvar lesions for which she presented for consultation of Maternity Souissi, University Hospital Ibn Sina, Rabat.
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An Experimental Study on Compressive Strength of Sustainable Concrete using Ceramic Waste as Partial Replacement of Cement
The transformation from a conventional consumption based society to a sustainable society is urgently required due to the pollution of the natural environment, the exhaustion of the natural resources and the decreasing capacity of the final waste disposal facilities. One of the ways to solve this problem is to use ceramic waste (CW) concrete as partial replacement with cement in structural concrete. Also to develop a sustainable concrete using new supplementary cementitious material (SCM) like ceramic waste powder which is produced from ceramic tiles at the manufacturing process and dismantled tiles, broken pieces of tiles and it was partially replaced with Ordinary Portland cement (OPC).Concrete mixtures were produced, tested and compared in terms of compressive strength to the conventional concrete. These tests were carried out to evaluate the mechanical properties for 7 and 28 days. As a result, the compressive strength achieved up to 30% replacing cement with ceramic waste. This research work is concerned with the experimental investigation on strength of concrete and optimum percentage of the partial replacement by replacing cement via 0%, 10%, 20%, 30%, 40% and 50% of ceramic waste. Keeping all this view, the aim of the investigation is to study the behavior of concrete while replacing the ceramic waste with different proportions in concrete.
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An Integrated Model of Intensive and Extensive Reading in Teaching Reading For EFL University Students: Current Practice and Future Possibilities
The vast amount of information available on the internet makes Reading become more important than ever before. It is possible to say that reading is not a guarantee for someone success but success will be harder to come without becoming a skilled reader. Teaching Reading in EFL setting has always been problematic. This is due to the fact that most students have limited amount of vocabulary, limited opportunity to read, limited access to reading material for practice and low motivation to read. Meanwhile, most of Reading lessons resolved around reading passages and answering comprehension questions which looked more like testing Reading rather than teaching Reading. Moreover, most teachers were not concerned on promoting reading outside of the classroom as a means of practice and expect the students to be able to read without any difficulties. Fluency in Reading, as a matter of fact, is the result of thousands of hours of meaningful Reading. The problems mentioned above, lead the writer to develop a model that integrates intensive reading with extensive reading. The intensive reading is designed to teach reading skills and strategies which are needed to become skilled readers. The Extensive reading is designed as a means of practicing the skills and strategies that are taught in the classroom as well as to develop fluency, improve vocabulary and motivation to read. Therefore, this article will elaborate intensive reading, extensive reading and the integrated model of the two concepts as well as current practice and future possibilities
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Evaluation of Persica-added Periodontal Pack on Post-Surgical Complications of Periodontal Flap Surgery
Background and Objectives: Periodontal flap surgery to eliminate pockets may result in unpleasant consequences such as pain, bleeding and difficulty in eating. The goal of this study was to evaluate the local application of Persica mouthwash mixed with periodontal dressing for a direct and maximal impact on the surgical wound. Materials & Methods: A split-mouth study design was performed on 30 patients who had moderate to severe chronic periodontitis and were periodontal surgery candidates. The Persica-containing dressing was applied to case side and compared to the dressing containing Serum Physiologic Solution on the control side according to the interdental bleeding index, postoperative pain and discomfort during eating, and the data were analyzed by independent t-test. Results: In all cases evaluated, the Persica mouthwash application brought about more unfavorable results than the control dressing (p? 0.05). Conclusions: addition of Persica mouthwash to periodontal dressing has adverse effects on surgical wound healing and therefore is not recommended.
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Arching phenomenon Check with the finite element method in Tang-e Hamam Dam and compared with the precise instrumentation results of dam
Analysis of earth dams Stability, and their arching phenomenon, is one of the most important issues in geotechnical engineering. Arching dam, you can use one or more methods are analyzed. The main factor of instability dams, gravity effect, but other factors can, intensify or provoke them to be effective. To understand the factors intensifying landslide, could contribute significantly to the experts, and the stability of the dam dirt, and prevent the arching. The purpose of this paper is to examine the phenomenon of arching in the bathroom tight barrier with finite element method, and compared with studies of dam instrumentation, numerical analysis by finite element software PLAXIS, has been made. Analysis, using behavioral models Mohr-Coulomb, is done. On the other hand, we can say that, numerical methods in the analytical methods is very rapid, reliable and accurate, and therefore these methods, able to perform parametric studies, the boundary conditions are complex. So in this study, AH stresses dam Tang-e Hamam, has been studied, and then perform parametric studies, it was concluded that increasing the angle of internal friction shell dam, the dam will lead to increased confidence. However, by changing the geometry of the dam core, core thickness miles to miles and increase confidence rises Dam. Also, the arching, the barrier height is variable, and strongly arching and the maximum arching, core thickness depends on the height of the dam.
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Analysis of the automation telecommunication and how works it
The distribution automation system, should be the relationship between the different parts, this connection is performed by the telecommunication system. This study is based on a descriptive analysis and use of available resources to analyze automation telecommunication , and how it acted. Results indicated that collected information, tools and measuring equipment, as well as status indicators, this data includes voltage lines, switch status and key, and the temperature of the transformer and is, by means of relays digital, CT, PT, PI, or error detection, etc., collected, and for the electrical signal, is ready. The instrument is needed, to the various data collected, and ready to send. The device should be able to, such as terminal information act, and electrical signals different, the voltages and current levels vary in a range acceptable, and to send ready, and at the same time be able to signal receive operation also , to apply to the equipment, to reach the desired voltage level. The device, remote terminal units, or the so-called RTU, called. Telecommunication system, should be able to kind of adjustment between the data created. The data on the one hand, the path between the terminal and the control center to travel. Information, telecommunication system, some changes are to transfer from the environment to be prepared. These changes are known to act modulation. After sending the photo changes based on the signal, the signal becomes understandable message back into shape.
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