scholars' press jan 2021 (132 risultati)

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In this book, open flame synthesis has been selected as a method to study the thermodynamic chemical combustion aspect of the formation and growth mechanisms of soot obtained from two domestic fuels commonly and commercially available fuel known as Liquefied Petroleum Gas (LPG) and Biogas to establish the favourable parametric controlled conditions for maximizing the yield of CNTs derived from soot. The presence of MWCNTs was observed under TEM, while surface morphology was viewed under SEM. Mean tube diameter, chirality distribution, constituents of the sample and crystallinity of CNTs were observed under XRPD. Raman Spectroscopy is used to identify the presence of SWCNTs and purity of CNTs. Quality and thermal stability of CNTs has been checked by TGA. 88 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Highly conductive and transparent films have many important applications such as transparent electrodes for optoelectronic devices and transparent heat mirrors for solar energy utilization. Although indium-tin-oxide (ITO) thin films are generally used for practical applications, ITO is a relatively expensive material because indium is not abundant. Recently Al-doped ZnO thin films have attracted interest as a transparent and conductive coating material because the low cost of this material makes it attractive for large-scale applications. In this book, the optimized deposition conditions for the preparation of Al-doped ZnO thin films by reactive DC magnetron sputtering method will be discussed. The structural, surface morphological, electrical, and optical properties of Al-doped ZnO thin films were reported systematically. 80 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Cancer is one of the significant dangers to general wellbeing in the developed world and increasingly in the developing world. In developed countries, cancer is the second most frequent reason for death. Oral cancer generally incorporates cancer of the lip, tongue, salivary glands, and other sites in the mouth; while pharyngeal cancer includes cancers of the nasopharynx, oropharynx, and hypopharynx. Over 90% of oral or pharyngeal cancers are squamous cells in inception. The malignancy epidemic is because of the combined effect of the aging of populations, and the elevated or rising levels of prevalence of cancer risk factors. Precisely tying trends in cancer incidence to alter the risk or protective behaviors would necessitate national databases that focus on particular age groups, account for the numerous interactions between behavioral and demographic risk factors, and factor in the substantial lag time between exposure to risk or protective factors and the ultimate occurrence of disease. 84 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Humans have been using nanotechnology for a long time without realizing it. The processes of making steel, vulcanizing rubber, and sharpening a razor all rely on manipulations of nanoparticles. The term 'nanotechnology' was coined by Prof. Eric Drexler, a lecturer, and researcher of nano-technology. 'Nano' is derived from the Greek word 'dwarf.' Nanotechnology is a term that encompasses all fields of science that operate on the nanoscale. The basic idea of nanotechnology, used in the narrow sense of the world, is to employ individual atoms and molecules to construct functional structures. 68 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Today, diatoms are being used to assess ecological conditions in surface water bodies around the world. As diatoms occur in almost all the environmental niches, the same group of organisms can be used for comparison of lakes, streams, wetlands, oceans, estuaries, and even some ephemeral aquatic habitats. Diatoms play a significant ecological role and are being extensively used as indicators of water pollution because they are natural inhabitants of the water. The distribution of diatom species in surface water bodies is mainly governed by the physico-chemical composition of the water. It is important to understand which environmental variable can affect diatom growth, assemblage, and distribution. In India, Diatom studies especially for monitoring the environment are yet to gain momentum. The investigations on Lake Diatoms are scanty. Understanding threshold responses in diatom assemblages along environmental gradients is valuable for justifying specific management targets. Thus, a more complete understanding of the taxonomy and ecology of diatoms remains at the foundation of sound science for environmental assessments and advancements in that science. 60 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The All-on-4 concept is a highly successful treatment option for the edentulous patient with excellent clinical outcomes. The All-on-4 concept is a paradigm shift in how implants are placed and angulated compared to traditional concepts with axial placement in a vertical manner. The angulations allow placement that avoids anatomical structures and also allows the use of longer implants, enabling increased bone to implant contact and placement of the implant into better quality bone anteriorly. Placement of dental implants previously in attempts to treat the severely resorbed maxilla and mandible has had only limited success. But the rehabilitation of completely edentulous, atrophied maxilla and mandible by the placement of implants using the AII-on-Four protocol gives new hope for a perceivable success, while becoming a promising treatment method of choice and standard in the care for severely compromised patients. 72 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Bone defects caused by trauma, infection, tooth loss, pathological lesions, etc., often lead to an abnormal form of maxillary and mandibular alveolar growths. When a tooth is lost, there is a lack of residual bone stimulation. It reduces and bone density in that area and loses external width and bone height. Bone width decreases by 25% during the first year of tooth loss and total 4 mm of height during the first year of extraction of teeth for a complete denture. It is lost immediately. Therefore, the remaining bone will not have a suitable anatomy for implant use without bone grafting. Different types of bone grafts such as allografts, auto grafts and allogeneic materials have been considered. Due to the Osteo conductive and Osteoinductive properties of autogenous bone, these materials are considered the standard method for correcting bone defects. For predictable bone growth in narrow ridges (0.5-4 mm), autogenous bone should be used. Only particulate grafts should be modified to improve prosthetic communication or autogenous bone block is used. 56 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The aim of the book is to present the synthetic strategy for the ligands optimization of reaction condition, formulation designing, characterization of synthesized compounds, and their evaluation for the biological activities i.e. antimicrobial activities. This book defining the medicinal value of synthesized compounds and their biological activities. Readers will find an exhaustive note on the mechanism and pharmacological actions of synthetic compounds. Toxicity evaluation of synthetic compounds will provide the safety level of consumption for medicinal purposes. The work was based on the determination of physico-chemical property of synthesized compounds against antimicrobial and Anti-inflammatory activity. Hope this book will be helpful to the researchers in the field of Pharmaceutical Chemistry, Phytochemistry, Pharmacology & Biology, and Biomedical Science. 76 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The study explains the properties of nanotubes in the wider context of materials science and highlights the contribution of research in this rapidly expanding field. A deeper understanding of the relationship between the structural order of the nanotubes and their mechanical properties will be necessary for the development of carbon-nanotube-based composites. The composites will benefit from the exceptional mechanical properties of carbon nanotubes, but that the major outstanding problem of load transfer efficiency must be overcome before suitable engineering materials can be produced.CNTs are unique due to the strong intermolecular bonds between the alternating 5 and 6 members that make rings of carbon atoms. Vander Waals forces present within carbon nanotubes make them prone to agglomeration/re-agglomeration and achieving good dispersion can be challenging due to those forces as well as their high aspect ratio and a high degree of entanglement with other CNTs.The synthesis, properties, and importance of nanotubes to improve the interlaminar strength of the fibrous composite. Study about the potential application of nanotubes for energy storage charge storage in supercapacitors. 52 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In this book, the available literature on nutrient management practices, viz., Application of organic manure, NPK fertilizers, and foliar spray in groundnut and grow their interactive effects on crop growth and yield are reviewed. Groundnut is an unpredictable consequence legume since its response to nutrient application is always not optimistic. Excessive application of nitrogen and potassium often resulted in excessive vegetative growth. Considering the availability of the major elements in the soil and the extent of losses due to leaching and/or fixation of the individual elements expected, a proper method of nutrient application and the time are need of the hour. These facts call for a concerted study on the possibility of more effective utilization of the nutrients in divided dosages like basal and top dressing. The book is aimed to have a better understanding of optimizing the nutrient requirement and uptake in increasing the pod yield of groundnut and the benefits of interactions between the organic and inorganic fertilizers. 84 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Heterocyclic compounds especially pyrazolo[1,5-a]pyrimidines and 1,2,4-triazines exhibited various biological and pharmacological applications such as DNA binding, anti-tubercular, antiviral, anti-inflammatory, antioxidant, antimicrobial and anticancer. Therefore, the main objective of this book is to display the synthesis, spectral analysis and biological evaluations of some pyrazolo[1,5-a]pyrimidines and 1,2,4-triazines. 56 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Cancer, an ancestral disease, has fascinating molecular aspects and is still challenging for those Physicians involved in its global treatment.This brief introductory book is destined to those people interested on some of the main biological aspects and on some related-clinical Cancer topics.The molecular biology of this disease is described in all the chapters, and the author also highlights Cancer as a tissue-disease, with critical patterns of behavior for the different Cancer cell populations.The Cancer phenotype carries a chapter, showing that even in a very 'genomic era', some phenotype aspects, are essentials for a better knowledge of what has been the old and what are the new medical treatments avenues.The 'cure of the all' is for the next 15 years, when also apart from the novel drug developments, our mind will have 'new concepts' of what really is considered as 'patient cure' in this complex disease. 56 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In teaching EFL, it is essential to consider the every factor that influences language learning proficiency. The key factor is student's personality that affects language learning process. Different learners have different abilities and these abilities are due to some personality issues. Learners and their needs should become a central part of the language teaching process. Dealing with psychology of the learners and designing teaching methods and activities are secrets of success in language learning and teaching. Actually, the role of personality factors in language learning is an obvious and undoubted issue in modern methods of teaching languages. The focused area of the research described in this book has been becoming an integral part of the educational process. 80 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Considered the southern region of Uzbekistan, the Land of Surkhon occupies a worthy place in the world civilization with its ancient archaeological monuments, ethnomadanism, scientific heritage of great scientists, monuments of Architecture, Art and trade relations of the Middle Ages, as well as its contribution to science. In ancient times, in the Surkhon oasis on the great Silk road, until the appearance of the Islamic religion, there were various forms of etiquette, such as primitive religions, Zarathustra, Buddhism, Christianity, and monasticism. In these regions there are archaeological sites, which include such ancient temples as Sopolitepa, jargon, airitom, Termez, Dalvarzintepa, Holchayon, Fayoztepa, Karatepa in the I-IV centuries BC.2These regions were the first centers of ancient culture with such names as Zaroutsoy, Sopollitepa, jargon, Termez, rust, where farming and crafting developed, distinguished by a favorable geographical location. 76 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Learners at primary level cannot link knowledge from the previous grade due to insufficient knowledge on practical investigations. This research book is designed to enlighten Natural Science Teachers on the importance of conducting practical activities in science classrooms. The book comprises of five chapters covering the following:Chapter 1: Background, Objectives and significance of the studyChapter 2: Literature Review on Practical activitiesChapter 3: The Methodology used for the researchChapter 4: Data Presentation and AnalysisChapter 5: Recommendations 88 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Our current civilization is the result of human mind living for centuries in the false reality of the process and purpose of Human life. This falsehood of life has led to the current social disorder full of extreme violence, inequitable distribution of planet wealth, social injustice, corruption, police brutality, disturbed planet ecology. A small number of rich people and corporations' control much of the planet wealth while majority of the population struggles for daily survival. Current political and business leadership running the affairs of the society are too busy to maintain the status quo. This absence of transformational leadership has opened up self-empowered youth leadership opportunities. Cultivating youth compassionate leadership holds the promise of building a vibrant global compassionate order. The knowledge and practices in the book prepare the youth to lead this challenge of social transformation. The book is of value to leadership program educators, psychologists, sociologists and spiritual leadership. 180 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This monograph uses the institutional economics and transaction costs theory of R. H. Coase to explain the experience of China in economic institutional choice in her quest for economic development and modernization. The monograph focuses on changes in economic institutions of China, from the establishment of the People's Republic of China until the reforms of the 1980s. The analysis shows that the institutional twists and turns in the history of economic development of China could be explained largely by one key factor, the constraints of incomplete information about the efficiency of different economic systems. The adoption of a market oriented reform and open door policy and the integration of China into the world economy have largely removed the constraint of incomplete information about efficiency of different economic models. Therefore, one would not expect China to experience such big swings in her economic institutional setups in the future. 76 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Cancer has the highest incidence and causes the most mortality worldwide. The phosphatidylinositol 3-kinase (PI3K)/Protein Kinase B (PKB, Akt) pathway is considered to be one of the most frequently altered pathways in human cancer with documented high relevance to tumour growth, metastatic spread, and resistance to anticancer treatment. Many human solid tumours harbour genetic alterations driving aberrant activation of the survival kinase Akt such as oncogenic activation of receptor tyrosine kinases, RAS or phosphatidylinositol-3-kinase (PI3K), loss of the tumour suppressor PTEN, or genomic amplification or gain-of-function mutations in one of the three known human Akt isoforms Akt1 (PKB ), Akt2 (PKBbeta) and Akt3 (PKBGamma). 56 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The COVID-19 outbreak felt by respondents harmed their jobs in Bali which are still dominated by the tourism sectors. It appears that there are two contradictions between physical distancing calls that are considered to interfere with the work activities of respondents, but on the other hand, if it is not done physical distancing, it is predicted that the outbreak of COVID-19 will be getting worse. This research recommended to reduce the spread of the COVID-19 outbreak, the government can lock down territories or perhaps on a national scale with cautious policy while still considering the adequacy of food, communication networks, electricity, and water for the community at regionally or nationally so that people do not get out home to work. The COVID-19 outbreak education was still needed so that people's self-awareness increased, they still wanted to stay at home, always wash their hands with soap, always drink warm water, provide hand sanitizer installed at home, always wash hands after outside the home, use soap to wash hands, provide antiseptics at home, and consume Vit C and E and get enough sleep. 56 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Whenever we observe or measure, we are concerned with whether we are measuring what we intend to measure or whether our observations are influenced by the circumstances in which they are made and we reach conclusions about the quality of our measures conclusions that will play an important broader role in addressing the substantive issues of our study.A good measure must not only be reliable but also valid. We often think of reliability and validity as separate ideas but, in fact, they're related to each other. A measure can not be valid unless it is reliable, but a reliable measure may not be valid, and 'Reliability is a necessary but not sufficient condition for validity'. 56 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -'Forensic Maxillofacial Radiology', has evolved as a potential tool over the years and has extensive application in the field of forensic odontology. It incorporates various radiological tools from the 2D to 3D imaging, that significantly aids the forensic odontologists to master their skills in the forensic identification procedures. From personal identification, disaster victim management, age and gender determination, bite mark analysis, craniofacial reconstruction, virtual autopsy and 3D printing , using various radiological modalities, the reach of forensic radiology is wide in today's technical world. Radiological aids also play an important role in the medico-legal field and in the criminal justice system across the globe and require more exploration regarding this subject to enhance its establishment. The paradigm shift in the forensic world has been created by Maxillofacial Radiology, while also playing a key role to ensure law enforcement, hence, delivering justice to the security of the common man. 88 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Healthcare systems throughout the world are witnessing improvements that have been attributed to explosion in knowledge and introduction of innovations. However, our previous two descriptions of the Iraq health care system showed that the Iraq healthcare system was not witnessing worth mentioning improvement, but experiencing failures that have been attributed to corruption and lack of real leadership .The aim of this paper is to provide an updated description of the healthcare system before covid-19 based on the most recently available unpublished data. 56 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Temporo-mandibular disorders are known to cause diagnostic dilemmas in stomatognathic system as the pathologies currently defined may vary in nature. Therefore knowledge and awareness of these mysteries along with evidence of anatomy and function of TMJ are essential for solving the complex and controversial issues related to their management. Imaging of TMJ is desirable to evaluate normal growth and development of the TMJ along with alterations in pathologic conditions including developmental, degenerative, inflammatory and traumatic changes.It's essence is focused on future innovations directed towards taking the mystique out of the diagnosis and treatment of craniomandibular (TMJ) disorders. 112 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Hygienic textiles and congenial micro environment are prime requirements for human beings to live comfortably and healthy. The major hindrance that comes in their way is microorganism which cause harm to human being by transmitting disease and infection. Basically, with a view to protect the wearer and the textile substrates itselfantibacterial treatment is applied to textile materials. Therefore, cotton fabric was treated with kinnow peels extract to assess its efficacy against antibacterial activity & washing. Aqueous (cold) extracts prepared from kinnow peels is applied on cotton fabric and antibacterial activity of the treated cotton fabrics were also assessed before and after washing using standard test method. The results revealed that kinnow peels extract treated samples exhibited good wash durability after 24 hours of inoculation in washed samples (one wash). After 24 hours, it gradually decreased in the antibacterial activity with an increase in incubation period. However, it is needed to retreat the fabric samples after every wash. 120 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Infertility is a medical condition or clinical term for couples who do not have the ability to achieve pregnancy from unprotected sexual contact for a period of 12 months. vitamin D is considered one of the important causes of many diseases, as the current study evaluated the levels of this vitamin with the anti-Mullerian hormone (AMH) in women with infertility, both primary and secondary types, in addition to that nanotechnology is one of the modern technologies that have taken a wide field and have many applications In many fields due to its chemical, optical and engineering properties. Therefore, researchers in chemistry, biology, medicine and other fields were interested in the sciences of nanomaterials, So, the study aimed to find out the role and effect of nanoparticles of metals (Se NPs) and metal oxides (CuO NPs) on levels of vitamin D and AMH in women with primary and secondary infertility. 124 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The purpose of our book is to study the impact of financial crisis on Risk premium evolution. Our first chapter investigates the various contemporary financial crises and reviews the literature concerning financial markets' behavior in crisis times.In a second chapter, we will present our research's conceptual basis, the CAPM financial asset valuation model, with its conditional international version. A critical review of the literature will be conducted to identify the methodological limitations of previous studies, which seem to us to be limited insofar as they tested the CAPM either under the hypothesis of perfect integration or under strict segmentation.As for the third chapter of our work, its objective is to study international portfolio management's performance during financial crises. 108 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Nigeria and India Law and Policy issue in Forest Conservation and Management for Sustainable Development started with a vision to search for law and policy in Nigeria that when compared with India, will control and eliminate deforestation. We are aware that without Law and Policy that restrict unnecessary felling of trees in Nigeria and India, people will fell trees indiscriminately; hereby leading to loss and extinction of habitats, ecosystem, biodiversity, Environmental degradation, Environmental decline and may even lead to climate change. This book, therefore, seeks to find out and make available for future research on how to restrict, abate, restrain and limit deforestation thereby encouraging aforestation. It is apt and innovative as the present trends in the world are green environment, climate change and environmental sustainability. 116 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The word photography comes from two ancient Greek words: photo, for 'light,' and graph, for 'drawing.' 'Drawing with light' is a way of describing photography. When a photograph is made, light or some other form of radiant energy, such as X-rays, is used to record a picture of an object or scene on a light-sensitive surface. Early photographs were called sun pictures because sunlight itself was used to create the image. With the invention of photography, a realistic image that would have taken skilled artist hours or even days to draw could be recorded in exact detail within a fraction of a second. 108 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The importance of azo dyes is shown by the fact that they account for over 60% of the total number of dye structures known to be manufactured. Azo dyes are the most widely used class of colorants because of their versatile applications in various fields that range from textile to non-textile applications. In this context, thiazole azo dyes similar to other heterocyclic analogs have the advantage of bright and strong shades that range from red to green and blue. In addition, thiazole azo dyes are of great importance since they have pronounced batho-chromic absorptions compared to corresponding benzenoid dyes as the heterocyclic ring can act as auxiliary electron acceptor due to the electro-negativity of the nitrogen and sulfur atoms. 2-amino thiazole and its different substituents are broadly used in a heterocyclic azo dyes as a diazo component as well as coupling component. 104 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Particulate Matter (PM) is a significant source of air pollution component that has been associated to a number of adverse health and environmental effects resulting from factors which influence its characteristics, composition and distribution in ambient atmosphere. High concentrations of PM can also result in secondary effects that include heart failure, aggravation of diabetes, neuro-degenerative diseases, skin problems, and can also cause lung diseases. Metals present in suspended particulate matter are also considered to be a health hazard since they can be absorbed into human lung tissue during breathing.The focus of the present work was to describe urban ambient particulate matter in terms of its metal content and then to evaluate its distribution in the atmosphere of metropolitan Karachi, Pakistan. 128 pp. Englisch.