Xem 1-20 trên 33 kết quả Macroscopic
  • Fracture mechanics is the field of mechanics concerned with the study of the propagation of cracks in materials. It uses methods of analytical solid mechanics to calculate the driving force on a crack and those of experimental solid mechanics to characterize the material's resistance to fracture.In modern materials science, fracture mechanics is an important tool in improving the mechanical performance of materials and components.

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Liver metastasis originating from colorectal cancer with macroscopic portal vein tumor thrombosis: a case report and review of the literature

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành y đề tài: Fragmentation of decorin, biglycan, lumican and keratocan is elevated in degenerate human meniscus, knee and hip articular cartilages compared with age-matched macroscopically normal and control tissues...

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  • Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài:"Predicting of oak wood properties using X-ray inspection: representation, homogenisation and localisation. Part II: Computation of macroscopic properties and microscopic stress fields"

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học General Psychiatry cung cấp cho các bạn kiến thức về ngành y đề tài: Evaluation of arthroscopy and macroscopic scoring...

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  • Over the past several decades, the increases in acquisition costs for U.S. Navy amphibious ships, surface combatants, attack submarines, and nuclear aircraft carriers have outpaced the rate of inflation. To understand why, the authors of this book examined two principal source categories of ship cost escalation: economy-driven

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  • This report explores why, in recent decades, military fixed-wing aircraft costs have escalated beyond the rates of commonly used inflation indices, examining both economy-driven factors that the Services cannot control and customer-driven ones that they can. The authors found that this trend of cost increases is true for all types of aircraft

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  • Giải phẫu học người (human anatomy) là môn khoa học nghiên cứu cấu trúc cơ thể con người. Tuỳ thuộc vào phương tiện quan sát, giải phẫu học được chia ra thành 2 phân môn: giải phẫu đại thể (gross anatomy hay macroscopic anatomy) nghiên cứu các cấu trúc có thể quan sát bằng mắt thường; giải phẫu vi thể (microscopic anatomy hay histology) nghiên cứu các cấu trúc nhỏ chỉ có thể quan sát dưới kính hiển vi.

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  • Tools shape how we think; when the only tool you have is an axe, everything resembles a tree or a log. The rapid advances in instrumentation in the last decade, which allow us to measure and manipulate individual molecules and structures on the nanoscale, have caused a paradigm shift in the way we view molecular behavior and surfaces. The microscopic details underlying interfacial phenomena have customarily been inferred from in situ measurements of macroscopic quantities. Now we can see and “finger” physical and chemical processes at interfaces.

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  • Investigation of the magnetic properties of materials is very important, because magnetic phenomena have various scientific and technical applications. The macroscopic properties of matter are a manifestation of the microscopic properties of the atoms of which it is composed. The magnetic properties of materials may be very different for types of material, depending on their nature and structure.

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  • Various mesoscopic systems have their own unique characteristics, some of which are of importance due to bridging function over classical and quantum mechanics. It is quite natural that human beings living in macroscopic world could hardly grasp the phenomena occurring in the microscopic world in an intuitive manner. This situation offers a vital sense in the "observation" problem necessarily accompanied with the classical means. The fundamental core of the argument between Einstein-Podolsky-Rosen and Bohr starting in 1935 actually lies in this point.

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  • Progress of thermodynamics has been stimulated by the fi ndings of a variety of fi elds of science and technology. In the nineteenth century, studies on engineering problems, effi ciency of thermal machines, lead to the discovery of the second law of thermodynamics. Following development of statistical mechanics and quantum mechanics allowed us to understand thermodynamics on the basis of the properties of constituent molecules.

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  • Nanoscale physics, nowadays one of the most topical research subjects, has two major areas of focus. One is the important field of potential applications bearing the promise of a great variety of materials having specific properties that are desirable in daily life. Even more fascinating to the researcher in physics are the fundamental aspects where quantum mechanics is seen at work; most macroscopic phenomena of nanoscale physics can only be understood and described using quantum mechanics. The emphasis of the present volume is on this latter aspect....

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  • It is our everyday experience that materials in the solid, liquid, and gas phases are equally present in the world around us.1 Nevertheless it is the physics of solids that has acquired a privileged status in the vast field of research into the physical properties of macroscopic bodies. The reason for this is that while investigating liquids and real gases, let alone materials in so-called mesomorphic phases can yield a lot of new and interesting results, it is the processes taking place in solids that have, in the first place, led to a great many fundamentally new concepts.

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  • The postulate In 1864, James Clerk Maxwell proposed one of the most successful theories in the history of science. In a famous memoir to the Royal Society [125] he presented nine equations summarizing all known laws on electricity and magnetism. This was more than a mere cataloging of the laws of nature. By postulating the need for an additional term to make the set of equations self-consistent, Maxwell was able to put forth what is still considered a complete theory of macroscopic electromagnetism.

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  • Over the past decade, there has been a vast explosion in new information relating to the art and science of dermatology as well as fundamental cutaneous biology. Furthermore, this information is no longer of interest only to the small but growing specialty of dermatology. Scientists from a wide variety of disciplines have come to recognize both the importance of skin in fundamental biological processes and the broad implications of understanding the pathogenesis of skin disease. As a result, there is now a multidisciplinary and worldwide interest in the progress of dermatology....

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  • René Descartes gives few philosophical arguments to directly support his rejection of forms in favor of mechanisms . Moreover, the scattered reasons he offers in his corpus are cryptic and hard to unpack. Hence I will draw on Descartes’ intellectual context to reconstruct his reasoning and shed light on his historic elimination of Scholastic Aristotelian substantial forms from the physical world.

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  • The committee was tasked to determine the best instrumentation and procedures for measuring BFD (see Box S-1). To do this, it reviewed technical specifications, viewed demonstrations of the operation and use of current and prospective systems, and evaluated factors such as human handling variability, process transparency, and software variability judgment. The committee found that given the current clay variation, a measurement precision (standard deviation) of 0.5 mm is sufficient; instruments featuring greater precision add little practical value to the testing process.

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  • The increasing demand on ultra miniturized electronic devices for ever improving performances has led to the necessity of a deep and detailed understanding of the mathematical theory of charge transport in semiconductors.

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  • There are several differences between bamboo and wood. In bamboo, there are no rays or knots, which give bamboo a far more evenly distributed stresses throughout its length. Bamboo is a hollow tube, sometimes with thin walls, and consequently it is more difficult to join bamboo than pieces of wood. Bamboo does not contain the same chemical extractives as wood, and can therefore be glued very well [Jassen 1995].

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