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  • von Amir Samimi, Amir Safavian & Mahdieh Asgari Bajgirani
    20,00 €

    The corrosion of pipelines' coatings is one of the main problems in oil and gas industries for which a large amount of money is spent each year. Coating is the first defense line in front of a corrosive environment in which pipes have been buried. Good function of coating depends on its adhesiveness rate to the metal surface. Initial adhesiveness and its durability in the contact conditions are among those factors that enhance coating efficiency in long term. The rate of Initial adhesiveness has a high relationship with coating movement and surface wetness by this movement in the course of applying the coating and also with cleanliness and preparedness of pipe surface. Corrosion in oil and gas wells has the electrochemical mechanism, When the system reaches a temperature below the dew point, moisture is converted to liquid and many droplets occurs on the pipe's wall. In the electrochemical reaction, water plays role of the electrolyte. In this book we propose and teach some way to decrease corrosion in oil and gas industries.

  • 12% sparen
    von Rabi Alwaali
    28,00 €

    The unprecedented demand for optical network capacity has fueled the development of long-haul optical network systems which employ wavelength-division multiplexing(WDM) to achieve tremendous capacities. Such systems transport tens to hundreds of wavelengths per fiber ,with each wavelength modulated at 10 Gb /s or more [1].The switching burden in such systems has been laid almost entirely on electronics. In every switching node, optical signals are converted to electrical signals (O-E conversion), buffered electronically, and subsequently forwarded to their next hop after being converted to optical form again (E-O conversion).

  • von Teba Abdul-Razzaq Hasan Al-Sudanni & Firas Abdul-Munim Jawad
    20,00 €

    This study investigates courtesy in American political interviews through three speech acts, namely, compliment, praising and thanking. The data of the study is represented by four American political interviews by adopting Searle's (1969) model for analysis the speech acts, the extracts are taken from American political interviewees' speech that contains courteous expressions .The total number of the extracts is fourteen.

  • 16% sparen
    von Miaad Hamzah Al Gebori & Atyaf Ali Sahib
    41,00 €

    Many instructors want a manual that is directly correlated with a specific textbook. As a result, this laboratory manual was designed to help first and second year undergraduate medical field student at College of AL- Safawa University. In a manner that will complement the textbook and make the study of Human Biology both exciting and challenging. According to an old Chinese proverb: Tell me and I will forget. Show me and I might remember. Involve me and I will understand.

  • 16% sparen
    von Shatha Amer Ibrahim & Balsam Salim Al-Tawash
    41,00 €

    The study area is suffering from many environmental pollution problems, for many reasons, and this study attempts to evaluate it by collecting water, soil, and plants samples, to analyze them in the laboratories to detect the concentration of heavy metals and other parameters, which may cause any contamination. The results that presented in this study is the only database available for the specification of heavy metals in soil, water, and plant samples of this study area, which will certainly help in contributing to effective monitoring of environmental quality. Also, it will provide information about present levels of heavy metals in the studied area for the post studies. The study results presented here may assist in understanding the potential influence of the contaminants on designing a more cost-effective remediation plan for contaminated water or soil.

  • von Amaal Samir
    22,00 €

    Network coding is a technique where, the intermediate nodes of the network, instead of simply forwarding the information packets they receive, take several packets and combine them together in one packet for transmission. This can be used to obtain the maximum possible information flow in a network. Network coding is implemented in different scenarios; uni-casting, multi-casting and broadcasting. In multicast networks, network coding has proved to be better than the normal routing algorithms in different aspects as it increases the throughput and reduces the delay.

  • 15% sparen
    von Fathe Allythi
    34,00 €

    There no any doubt that, the science of electric machinery is one of the necessary important sciences for the undergraduate students in electrical engineering and in mechanical engineering as well. This book "Single Phase & Special Electric Machinery" covers single-phase and most of special electric machines. Single phase motors are those to be fed from single-phase supply. Although they are less efficient when compared to 3-phase motors, they are the most familiar in use for home appliances, shops, offices etc. This is because 3-phase power was originally generated and distributed for lighting only; millions of homes were given single phase supply. Even where 3-phase mains are present, single-phase supply may be obtained from it by using one of the three lines and the neutral. On the other hand, special electric machines are those used to perform special domestic. Some of them machines find applications in computer peripheral equipment or in process control systems whereas others can be used in devices such as home appliances.

  • - a systematic
    von Ali Wadi
    20,00 €

    Mobile learning refers to the acquisition of skills and knowledge through the use of mobile devices such as smartphones and tablets to enhance the overall learning experience. In this research, a systematic literature review of 38 articles was conducted to identify the current trends in mobile learning adoption between the periods 2012 to 2017. Of the 38 articles reviewed, 6 were extracted from EBSCO database, 8 from Emerald Insight, 9 from Science Direct, 8 from Springer and 7 from Scopus. The main aim of this study was to investigate the current trends in mobile learning technologies adoption by reviewing the methodologies used by researchers, theoretical frameworks, publication types, missing gaps, publication years and venues.

  • von Hasanain Abdalridha Al-Tai
    20,00 €

    Motion detection and tracking are an important technique in image processing with extensive applications in medicine, remote sensing, and various fields, with increasing popularity in surveillance systems, military applications, and healthcare, for example. Detection algorithms depending on the application. And in the selection of the technique required in most cases, which depends on the application and the image in question rather than fragmentation of the image.

  • von Asaad Alhossaini
    22,00 €

    An R-module M is called fully dual stable, if N is contained in Ker f, for every submodule N of M and any homomorphism f of M into M/N. This new concept is dual to full stability and the two concepts are stronger than duo property. Fully dual stable modules stands strictly between duo and multiplication modules. In the class of projective modules, the three concepts coincide. In the class of quasi-projective modules duo and full dual stability coincide. Under certain conditions fully dual stable modules are quasi-projective but not in general. Several properties and characterization have been given for full dual stability. The concept of full dual stability, in fact, depends on submodules and homomorphisms. The researcher considers that some generalizations based on their submodules and others based on their homomorphisms. Maximal and minimal dual stable modules are generalizations of the new concept by modifying the condition on maximal and minimal submodule respectively. Fully pseudo dual stable module is another generalization by modifying the condition on the homomorphism.

  • 15% sparen
    von Alaauldeen Al-Sallami
    34,00 €

    Infertility has threatened many couples to continue married life. Traditional semen analysis conducted in laboratories is inadequate to judge and correct diagnosis of infertility patients. Determination of levels of hormones, vitamins and antioxidants in men Men infertility gives the correct and clear picture in the diagnosis of infertility in men who are sterile. So this book dealt with a complete thesis for the diagnosis of patients with semen Asthenospermia .

  • von Wafaa Wahdan Abd-Elaziz
    22,00 €

  • von Rachid Tigrine & Lamia Saim
    22,00 €

    L¿objectif de notre travail est d¿apporter notre contribution à une meilleure compréhension des phénomènes d¿ondes de spin dans les couches minces avec brisures de symétrie, et des nanostructures implantées. Nous entreprenons une étude théorique et de modélisation des états précessionnelles de différents types de systèmes avec brisures de symétries. En plus de l¿étude des propriétés dynamiques de spin. Plusieurs résultats intéressants découlent de ce travail, notamment une cartographie complète du champ précessionnel des états évanescents et propageants au voisinage des différents défauts étudiés, des magnons localisés, des coefficients de transmission et de réflexion , de la conductance magnonique et enfin des densités spectrales et d¿états associées.

  • 15% sparen
    von Sura K Ibrahim
    34,00 €

    Hristov-Taylor antenna has been designed at 10 GHz without and with the dielectric strips. Experimental measurements and theoretical calculations have been made. The results have shown improved characteristics when using the dielectric strips as a single antenna only. Three proposed designs of the long backfire antenna are presented at 10 GHz with different dimensions and lengths. Hristov and three proposed antennas have been designed in linear array with uniform and non uniform amplitude distributions for even and odd numbers of the elements. The resulting characteristics have been improved for the three proposed designs when using the dielectric strips as a single and linear array antenna.

  • 16% sparen
    von Huda Abdel Rehim Abdel Hami El Sharkawy
    46,00 €

    The present study aimed at investigating the effectiveness of Literature ¿ based Curriculum in developing preparatory students Reading Skills and attitudes. Sixty third year EFL preparatory school students from Dayrout Prep school , El Mahmoudia Administration, Behiera Governate, were randomly chosen to be trained on Literature-based Curiculum teaching strategy to develop their reading skills and attitudes in the academic year2013-2014.During the study a pre-post test was administered to the experimental group and the control group . A post test related to the allocated story was administered to the two groups. An attitude questionnaire was administered to the two groups. The results of the study supported the two study hypotheses: - there is a statistically significant difference at 0.01 or 0.05 levels between the mean scores of the experimental group and the control group in the first reading skills post test and in the second post test in favor of the experimental group.

  • 15% sparen
    von Hend Mansour
    34,00 €

    Triage is one of the most important and challenging tasks of the emergency department (ED). Therefore triage needs to be applied in all ED. An effective triage system classifies patients into groups according to acuity of illness or injury and ensure that the patients with life threatening illness or injury receive immediate intervention. Triage is the first pathway to competency so improving competence of newly graduate nurses is a major challenge. This book is guide for newly graduate nurses, junior nurse, educators, and anyone working in the emergency department for improving the competencies, knowledge and skills, or to implement triage training program to achieve highly qualified care. The book includes handouts, assessments, tools, training program and a reference to help you rapidly triage patients with urgent, life threatening conditions and determine the most appropriate treatment area for every patients presenting to the ED.

  • von Khaled Elmahjoub
    22,00 €

    Dans l'espace de ce livre consacré à l'immense domaine géographique de la productivité romanesque maghrébine polyphonique, il est incontestable que nous n'aspirons nullement à l'exhaustivité. Nous aborderons dans une optique comparable deux textes de Maghreb (libyen arabophone et marocain francophone). Pensant que nous avions affaire à un imaginaire maghrébin «arabe» transposé dans le français et «touareg» transformé en arabe, nous voulions étudier deux textes convergents culturellement et divergents linguistiquement. Le travail concerne surtout l'analyse des procédés poétiques. Ces derniers se répètent d'un écrit à l'autre chez nos auteurs, plus ou moins accentués. Au niveau de l'écriture et de la langue, ces écrits sont plus proches d'une recherche expérimentale et en tant que tels, ils nous ont paru plus à même de constituer un objet pour notre recherche, du travail d'une langue à l'autre.

  • von Shahrzad Sarrami Foroushani
    20,00 €

    In this research we try to recommended policy and planning strategies for climate change management. We are also investigating natural resources conservation and tourism sustainable development. Knowledge of ecotourism or nature tourism is regarded as one of the most attractive and at the same time the most profitable science related to natural resources and the environment, which has been highly regarded as a tool for increasing the national income of less industrialized countries. Tourism in the national and global scope (tourism) has grown more than other parts of the industry in order to access natural areas, and ecotourism or responsible tourism in nature as a part of this market has grown from 10% to 30%.Well-designed, well-planned tourism can provide additional benefits for indigenous communities and local economies while preserving and managing optimal nature. According to the definition of ecotourism association, nature tourism is a purpose-oriented journey to nature to understand the natural and cultural history of the environment by avoiding changes in ecosystems and environmental degradation.

  • von Soroush Zarinabadi, Mahmoud Bayanak & Khalil Shahbazi
    22,00 €

    Nowadays, the tracing of Nano materials in every large or small part of the industry and process is clearly evident and expanding. Laboratory assemblies, chemical industries, manufacturing processes, and the oil and gas industry have also come up with Nanotechnology over the last few years.In this project, it has been decided that application of Nano-silica to add to the formulation of cement slurry has been tested and analyzed to evaluate its effect on conventional properties and in particular its effect on reducing infiltration of gas of formation into the slurry. It is based on the fact that the scope or scope for the use and addition of Nano-materials to the composition of cement slurry that is currently in use, is identified and extracted, which maintains or enhances all previously approved conditions and has a positive impact on the reduction of immigration take a year therefore, at first, the conventional cement is designed and all the necessary properties are proved, then adding different percentages of Nano-scale materials is tested. In these experiments, the optimal percentage for the application of Nano-scale materials (if possible) is determined.

  • 12% sparen
    von Fathe Allythi
    28,00 €

    Three phase induction motor is one of ac machines family. It converts the ac electrical power input into a mechanical power output. The conversion process takes place through the rotating magnetic field. Its theory of operation is based on the mutual electromagnetic induction between the primary circuit and secondary circuit. Three-phase induction motors are the most widely used electric motors in industry. When fed from constant voltage constant frequency they run at nearly constant speed from no-load to full-load. 3-phase induction motors are simple, rugged, low-priced, easy to maintain and can be manufactured with characteristics to suit most industrial requirements. Nowadays, with the development of power semiconductors, induction motors may be considered as serious rivals to dc motors in many speed control systems.

  • 15% sparen
    von Radhi Sh Hamodi Al-Taweel, Fatima M Hussain & Fouad A Majeed
    34,00 €

    In this thesis, the total fusion cross section sF, the fusion barrier distribution DF and the fusion probability PF, for the reactions 40Ca+44Ca, 40Ar+110Pd, 40Ca+194Pt, 46Ti+46Ti, 48Ti+60Ni, 48Ca+238U, 58Ni+54Fe, 58Ni+58Ni, 81Br+104Ru, 86kr+76Ge, 86kr+100Mo, 124Sn+96Zr, 132Sn+48Ca and 134Te+40Ca has been studied. The semiclassical approach employed in the present study is based on the theory of Alder andWinther (AW) which was originally proposed to treat the Coulomb excitation of nuclei which is called Continuum-Discretized Coupled Channels (CDCC) method. The semiclassical approach uses the Wentzel, Kramers and Brillouin (WKB) approximation to treat the classical fusion probability, whereas that the intrinsic motion is handled as a time-dependent Quantum Mechanics. To sustain our semiclassical calculations and to test its success or shortfall, we had performed full quantum mechanical calculations using the well-known CCFULL code which is used to study the fusion reactions for heavy ions. The calculations for both semiclassical and full quantum mechanical have been performed in the case of no-coupling and in the case of coupling effect included.

  • 15% sparen
    von Mariam Hafez
    34,00 €

    Resveratrol as a phyto-estrogenic polyphenolic compound extracted from red grapes, has a calorie restriction effect on colorectal cancer cells. It stimulates the metabolic re-programming of cells from the anaerobic glycolysis into oxidative respiration. So that it is called to be a glucose deprivation mimic drug with a chemo- preventive and chemo- therapeutic effects. The calorie restriction effect of resveratrol is the deriving force for the enhanced cytotoxicity and apoptosis and the reduced angiogeneis of colorectal cancer cells.

  • von Dr Anan Abu-Hummour
    22,00 €

    Unemployment in Jordan is a seriously negative phenomenon as it adversely affects people in many ways. It increases in complexity and demands a deep investigation for comprehending its reasons to find out proper policy plans for such crisis. It is a universal issue with negative effects. All countries including Jordan confront this issue. This issue is growing in Arab countries, while, more than fifteen million jobless people in these Arab countries. Say: My Allah! Enhance my knowledge¿ Holly Quran EDUCATION IS LIFE: EDUCATION IS YOUR POWER

  • 12% sparen
    von Ammar Eesa Mahdi
    28,00 €

    The urinary bladder cancer (UBC ) are most common type of cancer of the urinary tract. It is regarded as the second and the fourth most common cancer types for males in Iraq and in the United State of America (USA) respectively and as tenth and eleventh most common cancer types for females in both Iraq and USA respectively. HER2/neu protein is glycoprotein produced by HER2 gene which lies in 17q21 (long arm of chromosome 17). This glycoprotein is normally found in lung, breast, urinary bladder, prostate and stomach, and its cytoplasmic portion has enzymatic function (tyrosine kinase activity). This receptor is responsible for the cell survival, normal cell growing and inhibition of apoptosis. HER2/neu protein overexpression is measured by IHC, but when the result of IHC is equivocal to HER2/neu protein (+ 2), Then, HER2 gene amplification is measured by using an accurate and more practical CISH method Several clinical trials are currently investigating the benefit of HER2-targeted therapy in urothelial bladder cancer. Patients with HER2 amplified UBC could potentially profit from these therapies.

  • 14% sparen
    von Mohamed Eissa
    31,00 €

    The first research investigates ideological structures of polarized discourse coded in the reports of two online news websites: egyptindependent and Ikhwanweb. . The study concludes with a discussion of how both websites establish a dichotomy of 'we' versus 'them'. In addition, the reports of each website marginalize the other through what is termed as ' Absent News'. The second research compares and contrasts the verbal systems of locals and immigrants using a 'prototypical pidgin' i.e. Gulf Pidgin Arabic.. The process of mimicking works both ways between locals and immigrants.

  • von Mariam Ahmad & Ali Al-Saadi
    22,00 €

    This study aims to evaluate oxidative stress status and investigate some important genes that were related to type 2 diabetes mellitus. This study was a case-control study conducted from November 2015 to April 2016 and included 60 Iraqi patients with diabetes mellitus type 2 (35 females and 25 males) with an average age (40-60 year), and it was carried out at diabetes and endocrine care center Al-Sadder Teaching Hospital, Al-Najaf, Iraq. Also, this study included 40 of apparently healthy people who were (20 females and 20 males) with an average age (40-60) as control matched with disease groups. The present study was divided into two main parts: biochemical and molecular. The biochemical part included study total antioxidants status (TAS), reactive oxygen species (ROS) levels and fasting blood glucose (FBG) levels, while molecular part included study catalase gene by using polymerase chain reaction technique (PCR) and restriction fragment length polymerase (RFLP-PCR), and GSTM1 and GSTT1 genes by using Multiplex technique.

  • 18% sparen
    von Miaad Hamzah Zghair
    46,00 €

    This lab manual and the course textbook should provide sufficient background to enable students enjoy with studying these small organisms.In this book I maintain or improve THREE KEY FEATURES. First, the written text itself has been upgraded in many areas while keeping its clear expository style and its integration with related subjects. All topics have been re-examined in the light of current literature and updated or refined if necessary. the result is a thoroughly modern treatment of medically important bacteria, focused on the need of students in medical collages . Second, the experiment that support each item with well explained procedure and important features of every exercise. Finally, the Report Paper that designed to help students learn to collect and present data in a systematic fashion, the laboratory report concludes each exercise. Students are first asked to write their expected results using information provided in background and their own experience. Tables are provided to record results. The questions in Review Questions are designed to lead the student form a collection of data or observations to a conclusion.

  • 15% sparen
    von Samah Oudah
    34,00 €

    Wind power is a clean source of energy that could compensate the electricity shortage and balancing the increasing demands for electricity .The world is facing great environmental threats due to climate change and energy security, the rising cost of fossil fuels and even economic development interests are making wind power to grow worldwide. Before a wind farm can be planned and built, the wind regime at asite must be characterized precisely. The wind data is used as the basis for a planning strategy that places wind turbines on the site where maximum power production. This work provides a valuable techno/economical guideline for the investors in construction of wind farm in the most promising studied locations .The expected outcome will encourage and support decision makers for successful migration toward wind energy. This study includes a mathematical and statistical modeling of wind speed, the planning stages, layout design and economic evaluation of wind energy project. It includes a case study of most promising site and technical and economical evaluation of nine selected wind turbines to investigate the most productivity of wind energy. The sensitivity analysis was adopted.

  • von Muhamd Abdulnafaa, Zuheir Karabash & Ali Cabalar
    20,00 €

    Increasing urbanization, population explosion, and improving standards of living due to technological innovations have contributed to increases in the quantity of a variety of Solid Waste Materials generated by industrial, domestic, mining, and agricultural activities. Because of the land using growth in the construction in the world, clay is mixed with different types of Solid Waste Materials from various sources. Recent re-construction activities for the urban transformation of cities have resulted in environmental impacts. Waste materials are left behind after large-scale transformation projects and accumulated in tremendous amounts force geo-environmental engineers to look for every opportunity to ¿make use of this bulk material in environmentally friendly manners. Most Solid Waste Materials are produced by the Construction and Demolition Materials sectors.

  • 18% sparen
    von Lamyaa Dawood & Zainab Taha
    46,00 €

    In this research we monitor production control (shop floor system) in Heavy Engineering Equipment State Company " H.E.E.S.Co." which is regarded as an integral part of productions system. In this research, production control system in Heavy Engineering Equipment State Company " H.E.E.S.Co." used to monitor material and information flow when producing different products is investigated. Analysis of information flow further is conducted so as to solve delay and bottleneck in production in this system. Actual questionnaire is performed in H.E.E.S.Co (80%) of workers claimed (information / communication) is bad in different dimensions . Internal collaborative system is developed to boost communication so as to reduce delays in due date, because customers may have real time basis to their products progress. Different reports generated from the Coll.P.S depend upon the direction of use i.e for customers that could be instantly informed through the web of their order progress, or for mangers where detailed data about (orders, work station, materials¿.etc) are revealed

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