موضوعات
آموزش و پرورش
ادبیات و زبان
پزشکی، دندانپزشکی و داروسازی
تاریخ و جغرافیا
داستان و رمان
دیگر
دین و فلسفه
روانشناسی
ریاضیات و آمار
سلامتی، تناسب اندام و رژیم غذایی
شیمی و پلیمر
علوم اجتماعی و حقوق
علوم زیستی و بیوتکنولوژی
فیزیک و نجوم
کامپیوتر و اینترنت
کتابهای کودکان و داستان
کسب و کار و اقتصاد
کشاورزی و دامپزشکی و غذا
معماری
مهندسی و فناوری
هنر و تئاتر
محصولات
HISTORY by John Higham, Leonard Krieger and Felix Gilbert - Original PDF
نویسندگان: خلاصه: From the time of the earliest English settlements in America, men and women of many sorts have been writing history. No one group has ever had a monopoly of the production of competent histories. Leadership in setting standards, however, has usually belonged to a particular class. Twice this leadership has changed hands. During the seventeenth century the best history was written by Puritan clergymen and by lay officials associated with them in creat- ing a new Zion in the wilderness. They wrote hastily, in whatever moments they could spare from active labors in behalf of the Puritan cause. Their history was a further extension of scripture: a chronicle of God's inscrutable will working within their own community. Clergymen long remained one of the most numerous species of his- torical writers, but their importance diminished as the church ceased to form the cultural center of American life. In the eighteenth century, patrician historians came to the fore. The growth of private wealth allowed a margin of leisure time for their studies. The weightiness of history appealed to the strong sense of social responsibility that characterized many American gentlemen; to them the historian was the ultimate human judge of men and events. They strove-without always succeeding, of course-to play a judicial role fairly and impartially, for the patrician, untrammeled by religious orthodoxy, prided himself on his independence of mind. He participated in a wide, transatlantic literary culture and wrote for an unspecialized, cultivated audience.1 During the greater part of the eighteenth and nineteenth centuries the patrician historian held the center of the stage, and in the works of Thomas Hutchinson, Charles Gayarre, Francis Parkman, Henry C. Lea, and others, his history reached a high level of accuracy and distinction.
Imagining Prostitution in Modern Japan, 1850–1913 - PDF
نویسندگان: خلاصه: 1 O ne Introduction On a mid-winter morning, some months after the death of the Meiji Em- peror on July 30, 1912, daily newspapers across Japan informed the na- tion that an “unprecedented manuscript,” written by a prostitute under the pseudonym Wada Yoshiko, was arriving at bookstores everywhere. It was called Yūjo monogatari (A Prostitute’s Tale) and was published by Bunmeidō Press.1 The news of Wada’s accomplishment was so wide- spread that for the rest of the week, it attracted an unusual procession of visitors to her pleasure quarters in Naitō-Shinjuku, a famous commuter town located on the outskirts of Tokyo. Journalists lined up to interview her, current patrons came to congratulate her, and new potential clients showed up to set eyes on her.2 In her sequel, Yūjo monogatari, zoku-hen (A Prostitute’s Tale, Part II), published less than a year after the first book, Wada describes this mo- ment as a set of mixed blessings (see figure 1.1). At first, she encountered unrelenting scorn and criticism from her immediate circle of managers, colleagues, and patrons. After the book was released, the madam of the brothel harshly condemned her for divulging private information about their clients. Her book revealed unsavory details about the conditions of the syphilis hospital where the prostitutes went for regular mandatory health exams and were confined if found diseased. Given her negative exposé, the director of the hospital came to the brothel to denounce Wada for staining his good reputation. Although Wada was careful not to reveal any names, she had disclosed job titles, and therefore, the madam rea- soned, anyone could identify the director or other brothel affiliates men- tioned in her book. In response, the madam demanded that Wada issue an immediate apology and retract some of the sections of her publication. Prostitutes in the brothel shunned Wada, too, for sharing details about their district clients and destroying their mutual trust.
Integral Waterproofing of Concrete Structures - Original PDF
نویسندگان: خلاصه: Concrete is the most popular construction material, which has a widespread range of structural applications, under numerous environmental conditions and under various levels and types of mechanical loads. It is used in buildings, infrastruc- tures, dams etc. Its suitability and durability require a set of mechanical, physi- cal, and chemical characteristics in order to extend its service life. Concrete durability is defined according to Concrete Terminology by American Concrete Institute (ACI) [1], as “the ability of concrete to resist weathering action, chemi- cal attack, abrasion, and other conditions of service.” This performance is simply based on concrete chemistry. Concrete durability properties are determined by its chemical structure and porosity. These structural characteristics are determined by cement components and their reactions with water. Understanding concrete durability problems and solutions requires a sufficient knowledge about concrete chemistry.
Iron Oxides by Damien Faivre - PDF
نویسندگان: خلاصه: As the name of the book “Iron oxides: from nature to applications” suggests, iron oxides are not only widespread in the environment, but also widely used by mankind in a variety of applications (Figure 1.1). Both this ubiquitous presence in nature and the utilization as tools have been established for cen- turies and are still valid today. The first illustrative examples of iron oxides certainly are compass needle or rust (Figure 1.2). Iron oxides are present in solid, liquid, and gaseous environments, with respective examples such as rocks, as mineral inclusion in swimming bacteria or in aerosols. Depending on the type of use, several sources of iron oxides exist. Applications range from the heavy steel production to medicine and art. The different aspects of mineral formation and their use as well as modern characterization techniques are reviewed in this book
Arvid Schors Doppelter Boden. Die SALT-Verhandlungen 1963-1979 - Original PDF
نویسندگان: خلاصه: Initiativen zur Reduzierung der nuklearen Bedrohung hatte es seit Be- ginn des Kalten Krieges immer wieder gegeben. Die USA hatten bereits 1946 unter dem Eindruck der Atombombenabwürfe über Hiroshima und Nagasaki den Baruch-Plan vorgelegt. Er sah die Errichtung einer internationalen Körperschaft vor, der ein globales Monopol für die militärische Nutzung der Atomkraft zukommen sollte. Dieses Konzept einer vollständigen nuklearen Abrüstung scheiterte am Widerstand der Sowjetunion, die zu diesem Zeitpunkt den USA nukleartechnisch unter- legen und deshalb nicht bereit war, eine Vereinbarung zu schließen, die das US -amerikanische Atomwaffenmonopol auf Jahre hin festgeschrie- ben hätte.1 Mit ihrem ersten erfolgreichen Atomwaffentest brach die Sowjetunion 1949 schließlich dieses amerikanische Monopol.2 Während der 1950er Jahre begann auch sie stärkeres Gewicht auf Atomwaffen und ballistische Raketen zu legen
Essentials of Flow Assurance Solids in Oil and Gas Operations Understanding Fundamentals, Characterization, Prediction, Environmental Safety, and Managemen - Original PDF
نویسندگان: خلاصه: ntroduction Oil and gas were formed over millions of years from the dead bodies of plankton (tiny marine organ- isms). These prehistoric dead plankton and their naturally engineered product have dominated and shaped modern times into “the Great Oil Age,” as McKenzie-Brown, Jaremko, and Finch titled their book on the subject [1]. Petroleum shapes our modern times in two main ways: first by serving as the main source of energy, and secondly by being the raw material for thousands of products that play critical roles in modern civilization. Fossil fuels still constitute the major global source of energy, despite the recent advances in renew- able sources of energy. Fossil fuels represent 85% of global primary energy consumption [2,3], with oil remaining as the most used source in the energy mix (33%–34%), as shown in Fig. 1.1. The global consumption of and demand for hydrocarbons (oil and gas) outweigh that of other sources of energy such as coal, nuclear, and renewable energies, due to the fast-growing population and newly emerging technologies. The global energy demand is projected to more than double by 2050 due to the growth in population and economies [4]. The demand for gas is growing faster than the demand for oil, especially in developing countries [5,6]
Structured Fluids: Polymers, Colloids, Surfactants - Original PDF
نویسندگان: خلاصه: Over the last thirty years, the study of liquids containing polymers, surfactants, or colloidal particles has developed from a loose assembly of facts into a coherent discipline with substantial predictive power. These liquids expand our conception of what condensed matter can do. Such structured-fluid phenomena dominate the physical environment within living cells. This book teaches how to think of these fluids from a unified point of view showing the far-reaching effects of thermal fluctuations in producing forces and motions. Keeping mathematics to a minimum, the book seeks the simplest explanations that account for the distinctive scaling properties of these fluids. An example is the growth of viscosity of a polymer solution as the cube of the molecular weight of the constituent polymers. Another is the hydrodynamic radius of a colloidal aggregate, which remains comparable to its geometrical radius even though the density of particles in the aggregate becomes arbitrarily small. The book aims for a simplicity, unity and depth not found in previous treatments, and includes numerous figures, tables and problems. It will be an ideal textbook for teaching undergraduates in physical science how to understand soft matter, but will also be of interest to industrial scientists, who want to gain a broader understanding of soft matter systems
Alkylene Oxides and Their Polymers - Original PDF
نویسندگان: خلاصه: The poly(alkylene oxide)s are linear or branched-chain polymers that contain ether linkages in their main polymer chain structure and are derived from monomers that are vicinal cyclic oxides, or epoxides, of aliphatic olefins, principally ethylene and propylene and, to a much lesser extent, butylene. These polyethers are commercially produced over a range of molecular weights from a few hundred to several million for use as functional materials and as intermediates. Lower polymers are liquids, increasing in viscosity with molecular weight. The high polymers can be thermoplastic. Solubilities range from hydrophilic water-soluble polymers that are principally derived from ethylene oxide, to hydrophobic, oil-soluble polymers of propylene oxide and butylene oxide. A wide variety of copolymers is produced, both random copolymers and block copolymers. The latter may be used for their surface-active characteristics.
Absorbable biodegradable polymers - Original PDF
نویسندگان: خلاصه: Egyptians sutured wounds as early as 3500 B.C. using a variety of natural polymers including treated intestines, which are the early versions of collagen-based surgical gut sutures.1 Synthetic, absorbable polyesters based on 2-hydroxyacetic acids were developed for preparing less tissue reactive alternatives to surgical gut sutures in the early 1970s. In addition to collagenbased polymers, other natural, absorbable polymers, such as albumin, chitosan, and hyaluronic acid and derivatives thereof have been used for many pharmaceutical and biomedical applications for several decades.2 Of these polymers, the application of chitosan and hyaluronic acid–based polymers has received a great deal of attention in the past 15 years for use in controlled drug delivery systems, tissue repair, tissue engineering, and controlling certain biological events.
Handbook of Biodegradable Polymers - Original PDF
نویسندگان: خلاصه: Biodegradable polymers are niche market materials finding focused applications, including agricultural applications such as mulch films, flowerpots and controlled-release fertilisers and packaging items such as carrier bags and food wrapping and containers. They have the potential to provide a solution to a range of environmental concerns: decreasing availability of landfill space, declining petrochemical sources, and also offer an alternative option to recycling. Rapra's Handbook of Biodegradable Polymers is a complete guide to the subject of biodegradable polymers and is ideal for those new to the subject or those wanting to supplement their existing knowledge. The book covers the mechanisms of degradation in various environments, by both biological and non-biological means, and the methods for measuring biodegradation. The degree and rate of biodegradation is dependent on the chemical composition of the polymer and its working environment, and so there is no single optimal method for determining biodegradation. This handbook provides discussion of international and national standards and certification procedures developed to ensure accurate communication of a material's biodegradability between producers, authorities and consumers. The book goes on to consider the characteristics, processability and application areas for biodegradable polymers, with key polymer family groups discussed.آیا کتاب مورد نظر هنوز بر روی سایت قرار نگرفته است؟ جای نگرانی نیست! کافی است بر روی گزینه سفارش کتاب کلیک کرده و درخواست خود را ثبت کنید. در کمتر از چند ساعت کتاب شما را آماده خواهیم کرد.