Unilibrary. Oliy ta'lim muassasalarining yagona elektron kutubxona axborot tizimi.

The Best Astronomical Events through 2020

There is a widespread impression that the scientific appreciation of the universe must be left wholly to those who have had years of formal training or who devote a large part of their free time to science as a hobby. It isn’t true, of course, and it’s less true now than ever before. Thanks to the Web, volunteers with little specific training are now assisting scientists in tasks as diverse as classifying galaxies, searching for lunar features, and monitoring bird nesting sites. But you don’t need expensive equipment, a steep investment of free time or even a broadband connection to start observing the heavens. All you need are your eyes. Everyone takes a moment to sky-gaze now and then – admiring the colors of a Sunset, pondering the Man in the Moon or playing connect-the-dots with bright stars. And while most of us are denied the awesome pleasure of a clear, dark country sky far from the tawny glow of city lights, we can still observe the solar system’s brightest members – the Sun, the Moon and five planets. Their ever-changing configurations fascinated and puzzled sky watchers for the first few thousand years of human civilization, a time when the human eye was the primary observing tool. Tracking their wanderings through the sky requires nothing more than good weather and some guidance on when and where to look.

АСКОРБАТ ХИТОЗАН BOMBYX MORI СИНТЕЗИ, ХОССАЛАРИ ВА ҚЎЛЛАНИШИ

Бугунги кунда жаҳонда хитозан ва унинг ҳосилаларини синтез қилиш ва уларнинг физик-кимёвий хоссаларини тадқиқ қилиш ҳамда улар асосида истиқболли препаратлар яратишга бағишланган илмий тадқиқотлар олиб борилмоқда. Бу борада хитозанни модификациялаб, сувда эрувчан ҳосилаларини синтез қилиш, тузилиши ва хоссаларини ўрганиш ҳамда унинг асосида ўсимликларнинг ўсиши ва ривожланишида яққол биофаоллик намоён қиладиган, комплекс таъсир қилувчи антимикроб ва иммуннофаоллик хоссаларига эга бўлган экологик хавфсиз, махсус хоссали препаратлар яратиш муҳим ахамият касб этади.

CANONICAL PROBLEMS IN SCATTERING AND POTENTIAL THEORY PART I: Canonical Structures in Potential Theory

Potential theory has its roots in the physical sciences and continues to find application in diverse areas including electrostatics and elasticity. From a mathematical point of view, the study of Laplace's equation has profoundly influenced the theory of partial differential equations and the development of functional analysis. Together with the wave operator and the diffusion operator, its study and application continue to dominate many areas of mathematics, physics, and engineering. Scattering of electromagnetic or acoustic waves is of widespread interest, because of the enormous number of technological applications developed in the last century, from imaging to telecommunications and radio astronomy. The advent of powerful computing resources has facilitated numerical modelling and simulation of many concrete problems in potential theory and scattering. The many methods developed and refined in the last three decades have had a significant impact in providing numerical solutions and insight into the important mechanisms in scattering and associated static problems. However, the accuracy of presentday purely numerical methods can be difficult to ascertain, particularly for objects of some complexity incorporating edges, re-entrant structures, and dielectrics. An example is the open metallic cavity with a dielectric inclusion. The study of closed bodies with smooth surfaces is rather more completely developed, from an analytical and numerical point of view, and computational algorithms have attained a good degree of accuracy and generality. In contradistinction to highly developed analysis for closed bodies of simple geometric shape which was the subject of Bowman, Senior, and Uslenghi's classic text on scattering [6] structures with edges, cavities, or inclusions have seemed, until now, intractable to analytical methods.

Феъл-атвор ва ёзув

Ўзингизни қизиқтирган саволларга қўлингиздаги ушбу китобни мутолаа қилаётиб батафсил жавоб оласиз. Шунингдек, графология соҳасига оид билимларингиз мустаҳкамланиб боради

Асаларичилик хўжаликларини бошқаришнинг ташкилий-иқтисодий механизмлари

Ҳозирда жаҳоннинг турли илмий марказлари ва тадқиқот муассасаларида асаларичилик хўжаликлари фаолиятини самарали бошқаришнинг кўплаб илмий йўналишлари бўйича тадқиқотлар олиб борилмоқда. Жумладан, асаларичилик хўжаликлари фаолиятини бошқариш механизмларини шакллантириш, бошқаришнинг ташкилий-иқтисодий механизмлари асосий ёндашувларини такомиллаштириш, нисбатан кичик миқёсдаги хўжаликлар ўртасида кооперация алоқаларини кенгайтириш, асаларичилик маҳсулотларининг диверсификация даражасини кучайтириш, мазкур хўжаликларда инновацион жараёнларни бошкариш самарадорлигини долзарб масалалардан ҳисобланади.

BIZNES KITOB

Фикрлаш устида ишлаш жараёнини тушуниш ва мияни муваффақиятга созлаш. Сиз ҳаётингизда ва бизнесда эришишни истаган нарсаларингизни яратишда визуализация ва медитация қандай ёрдам беришини билиб олиш.

BUILDING BLOCKS OF MATTER

The concepts and ideas of elementary particle physics are abstract, and they are typically expressed in the language of mathematics. However, the goal of elementary particle physics is very simple, and all the efforts of elementary particle physicists are directed toward that simple goal: to identify the basic building blocks of matter and to understand how they interact to produce the material world we observe. This encyclopedia contains articles intended for a broad audience of general readers and is designed to edify and give readers an appreciation for one of the most active and productive areas of physics throughout the twentieth century and to the present time. On the one hand, most of the articles have been written in ordinary language and provide a solid base in particle physics concepts and history for those who are new to the field. On the other hand, some topics in particle physics are difficult to express in everyday words, and in the articles on such topics, symbols appear and even an occasional equation. Even these articles, however, are written so that the reader with little physics background can capture a general sense of the topic covered.

O'zbek tili ning imlo lug'ati.

Bu lug'at lotin yozuviga asoslangan o'zbek alifbosini joriy etish bo'yicha respublika davlat komissiyasining topshirig'i bilan yangi alifboga va yangi imlo qoidalariga mas holda tuzildi.

АНТИОКСИДАНТЛАРНИНГ ФАОЛЛИГИНИ ЎРГАНИШ АСОСИДА ВИНО ИШЛАБ ЧИҚАРИШ ТЕХНОЛОГИЯСИНИ ТАКОМИЛЛАШТИРИШ

Жаҳон амалиётида узок муддат сакланиб етиштириладиган маркали нордон ва юқори сифатли қувватланган вино ишлаб чикариш, оксидантлар таркиб, антиоксидант ҳимоя тизимини ўрганиш, вино технологиясининг мукаммал оксидланиш жараёнларини тадқиқ этишни оптималлаштириш ва моделлаштириш билан рақобатбардош ва экологик тоза табиий ичимликлар ишлаб чиқариш технологияларини такомиллаштириш борасида илмий тадкикотлар олиб борилмоқда.

Plastics materials

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АНГРЕН КАОЛИНИНИ НИТРАТ КИСЛОТАСИ БИЛАН ПАРЧАЛАБ АЛЮМИНИЙ ОКСИДИ ОЛИШ ТЕХНОЛОГИЯСИНИ ЯРАТИШ

Дунё миқёсида юқори силикатли таркибида алюминий тутган хомашёларни қайта ишлаш технологиясини ишлаб чиқишда қуйидаги илмий ечимларни асослаш зарур: паст сифатли, юқори кремнийли алюминий хомашёсини ишқорий ва кислотали усулларда кайта ишлаш жараёнларини ўрганиш, шу жумладан олдиндан термик ишлов бериш босқичлари, хомашёни ажратиб олиш, алюминийнинг кислотали эритмаларини темирсизлантириш ва тозаланган эритмаларни алюминий оксидига қайта ишлаш, айланма эритмалардан фойдаланиш ёки қайта ишлаш, юқори кремнийли таркибида алюминий тутган хомашёлардан алюминий оксиди олишнинг самарали технологиясини ишлаб чиқиш зарур.

Nonlinear Optical

It has been a great pleasure for me to have prepared the latest edition of my book on nonlinear optics. My intrigue in the subject matter of this book is as strong as it was when the first edition was published in 1992. The principal changes present in the third edition are as follows: (1) The book has been entirely rewritten using the SI system of units. I personally prefer the elegance of the gaussian system of units, which was used in the first two editions, but I realize that most readers would prefer the SI system, and the change was made for this reason. (2) In addition, a large number of minor changes have been made throughout the text to clarify the intended meaning and to make the arguments easier to follow. I am indebted to the countless comments received from students and colleagues both in Rochester and from around the world that have allowed me to improve the writing in this manner. (3) Moreover, several sections that treat entirely new material have been added. Applications of harmonic generation, including applications within the fields of microscopy and biophotonics, are treated in Subsection 2.7.1. Electromagnetically induced transparency is treated in Section 3.8. Some brief but crucial comments regarding limitations to the maximum size of the intensityinduced refractive-index change are made in Section 4.7. The use of nonlinear optical methods for inducing unusual values of the group velocity of light are discussed briefly in Section 3.8 and in Subsection 6.6.2. Spectroscopy based on coherent anti–Stokes Raman scattering (CARS) is discussed in Section 10.5. In addition, the appendix has been expanded to include brief descriptions of both the SI and gaussian systems of units and procedures for conversion between them.

Gender Smart Mobility Concepts, Methods, and Practices

This book presents gender and diversity in smart transport as a cutting-edge issue in urban contexts around the globe. It addresses new challenges and possibilities related to the smart transport sector. It demonstrates how gender and diversity are entangled in concepts and various forms of current smart mobility practices in policy, planning, and innovation.

АМИНОКИСЛОТАЛАР ВА ГОМОВЕРАТРИЛАМИН АСОСИДА АЗОТ САҚЛАГАН ГЕТЕРОЦИКЛИК БИРИКМАЛАР СИНТЕЗИ

Мамлакатимизда фармацевтика саноатини қўллаб-қувватлаш чора- тадбирлари негизида маҳаллий хомашёлар ва органик синтез маҳсулотлари асосида сифатли дори воситаларини яратиш ва ички бозорни зарурий дори воситалари билан тўлдириш ҳамда импорт даражасини камайтириш учун илмий тадқиқотлар ташкил этиган бўлиб, бу борада қатор натижаларга эришилмоқда. Ўзбекистон Республикасини янада ривожлантириш бўйича Ҳаракатлар стратегиясида «фармацевтика саноатини янада ривожлантириш, аҳоли ва тиббиёт муассасаларининг арзон, сифатли дори воситалари билан таъминланишини яхшилаш» вазифалари белгилаб берилган.

Infrastrukturen der Biosicherheit Zur Macht sozio-technischer Prognoseverfahren am Beispiel des Syndromischen Gesundheitsmonitoring in den USA

Dieses Werk ist lizenziert unter der Creative Commons Attribution 4.0 Lizenz (BY). Diese Lizenz erlaubt unter Voraussetzung der Namensnennung des Urhebers die Bearbeitung, Vervielfältigung und Verbreitung des Materials in jedem Format oder Medium für belie- bige Zwecke, auch kommerziell.

INTRODUCTION TO CONTINUUM MECHANICS FOR ENGINEERS

This textbook is intended to introduce engineering graduate students to the essentials of modern Continuum Mechanics. The objective of an introductory course is to establish certain classical continuum models within a modern framework. Engineering students need a firm understanding of classical models such as the linear viscous fluids (Navier-Stokes theory) and infinitesimal elasticity. This understanding should include an appreciation for the status of the classical theories as special cases of general nonlinear continuum models. The relationship of the classical theories to nonlinear models is essential in light of the increasing reliance, by engineering designers and researchers, on prepackaged computer codes. These codes are based upon models which have a specific and limited range of validity. Given the danger associated with the use of these computer codes in circumstances where the model is not valid, engineers have a need for an in depth understanding of continuum mechanics and the continuum models which can be formulated by use of continuum mechanics techniques.