Metallic objects

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  • One of the most important inventions for the development of radars was made by Christian Huelsmeyer in 1904. The German scientist demonstrated the possibility of detecting metallic objects at a distance of a few kilometres. While many basic principles of radar, namely using electromagnetic waves to measure the range, altitude, direction or speed of objects are remained up to now practically unchanged, the user requirements and technologies to realise modern radar systems are highly elaborated....

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  • POWDER METALLURGY has been called a lost art. Unlike clay and other ceramic materials, the art of molding and firing practical or decorative metallic objects was only occasionally applied during the early stages of recorded history. Sintering of metals was entirely forgotten during the succeeding centuries, only to be revived in Europe at the end of the 18th century, when various methods of platinum powder production were recorded (

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  • Purpose, object and scope of studying: Apply of q-deformed Fermi-Dirac statistics to research heat capacity and paramagnetic susceptibility of free electron gas in metals at low temperatures, formula of heat capacity and magnetic susceptibility from the free electron gas in a metal depends on q deformation

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  • Inductive proximity sensors are widely used in various applications to detect metal devices. They consist of an oscillator, trigger, and switching amplifier. If a metal object enters the electromagnetic field of the oscillator coil, eddy currents are induced in this coil which change the amplitude of oscillation, which causes the trigger stage to trip and the semiconductor output stage to switch.

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  • While driving on a busy city street one night a few years ago, I flinched as something from out of the sky crashed down on my windshield, striking it with a tremendous thud. The thing startled me and I heard the glass give under the object’s force—but it didn’t crack. I stopped, got out, and looked around. On the side of the road I spotted the menace—a section of tailpipe that apparently had been struck and thrown up into the air by a passing vehicle. The rusty metal object landed hard, leaving a few deep scratches on my windshield—the safety glass held up under the...

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  • At its inception, the original plan for this symposium was to emphasize the medical aspects of inorganic chemistry, rather than to go over once more new developments in bioinorganic chemistry, important as the subject is, since the latter topic has been treated many times in recent symposia reviews and monographs.

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  • Sintering refers to the science and technology of production objects from fines or powders. Being a very complex phenomenon, sintering covers a broad subject field and combines chemistry, physics and mechanics. Sintering deals with various material systems such as metals, non-metals, ceramics, polymers, and their combinations. Processes of sintering may occur in a wide temperature range - in a solid state as well as with participation of a liquid phase.

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  • Wastes are very process-specific but the key pollutants can be derived from knowledge of: the process, construction materials, corrosion / erosion mechanisms and maintenance materials. Waste audits are used to gather information on the source, composition, quantity and variability of all wastes. Waste prevention typically involves preventing the arising of waste at source, minimising the arisings and recycling any waste that is generated.

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  • Hence, tourism marketing should not only be regarded as a tool for attracting more visitors to a region, as it has been the case for most destinations. Instead, tourism marketing should operate as a mechanism to facilitate regional development objectives and to rationalise the provision of tourism in order to ensure that the strategic objectives of destinations are achieved. Tourism marketing should also ensure equitable returns-on-resources-utilised for the production and delivery of tourism products, as well as the regeneration of these resources.

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  • We believe that it is interesting to study the system and software architecture of environments which integrate the evolving ideas of computational grids, distributed objects, web services, peer-to-peer networks and message oriented middleware. Such peer-to-peer (P2P) Grids should seamlessly integrate users to themselves and to resources which are also linked to each other. We can abstract such environments as a distributed system of “clients” which consist either of “users” or “resources” or proxies thereto.

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  • The international Colloquium “Open Issues in Local Star Formation and Early Stellar Evolution” was held in Ouro Preto (Brazil) from April 05 to 10, 2003. The Colloquium took place in the “Parque Metal´urgico”, an old iron industry that has been transformed into a nice modern conference center. Ouro Preto is a 18th century colonial city that has been declared a Cultural Heritage of Mankind in 1980. It is situated in the hills of the State of Minas Gerais at about 100 km from Belo Horizonte....

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  • Examination of Sensation The main components of the sensory examination are tests of primary sensation (pain, touch, vibration, joint position, and thermal sensation; Table 251).

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  • Anterior view of dermatomes (left) and cutaneous areas (right) supplied by individual peripheral nerves. (Modified from MB Carpenter and J Sutin, in Human Neuroanatomy, 8th ed, Baltimore, Williams & Wilkins, 1983.) Figure 25-3 Posterior view of dermatomes (left) and cutaneous areas (right) supplied by individual peripheral nerves. (Modified from MB Carpenter and J Sutin, in Human Neuroanatomy, 8th ed, Baltimore, Williams & Wilkins, 1983.)Temperature sensation, to both hot and cold, is best tested with small containers filled with water of the desired temperature.

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  • The firm’s beta ratios, its market value to book value, its current price to earnings ratio and the historical growth rate in earning per share are identified by Moore & Beltz (2002) as possessing strong influence on the equity price of the firm. They also argue that the identified factors have varying effects on the price and the effects vary from time to time, sector to sector and even from firm to firm within the same industry.

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  • One of the most significant contributions of the MEASURE DHS program is the creation of an internationally comparable body of data on the demographic and health characteristics of populations in developing countries. The DHS Comparative Reports series examines these data across countries in a comparative framework. The DHS Analytical Studies series focuses on specific topics. The principal objectives of both series are to provide information for policy formulation at the international level and to examine individual country results in an international context.

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  • In extreme cases of mental disability, substituted judgment may be appropriate when a severe emotional disturbance or cognitive impairment compromises an individual’s ability to give informed consent. Any restriction or denial of decision-making author- ity to a disabled woman should be the consequence of an objective procedure, con- taining proper legal safeguards against every form of abuse. This procedure must be based on an evaluation of the capability of the mentally disabled person by qualified experts, subject to periodic review and to appeal.

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  • The Baltic Sea is a unique basin, being productive with intensive fishing potential and has therefore been the object of many studies. It is a brackish, nontidal, relatively shallow and semi-enclosed sea. The Baltic is located at a high latitude, hence one of its characteristic features is ice. Another unique geographical pattern are the archipelagos located off the coast of Stockholm which consist of more than 25 000 islands. The relative ionic concentration of toxic substances e.g. chemical elements is generally higher in the low-saline Baltic Sea than compared to the North Sea....

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  • A good management and control of the societies in general is essential for their successful functioning and for that purpose the Government has been aiding them with trained and experienced personals and also with financial assistance. The management having no fear of evaluation of their works and checking of their accounts by some independent agencies might go reckless and the interest of the society might be affected adversely. With this objective in view audit of each Co-operative society at least once in each year has statutorily been provide.

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  • The nano-scale spatial organization of metallic and other inorganic materi-als into 1D objects is a key task in nanotechnology. Nano-scale fibers and tubes are very useful templates for such organization because of their inherent 1D organization. Fibrillar biological molecules and biomolecular assemblies are excellent physical supports on which to organize the inor-ganic material.

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  • The natural world is there without us. When we constitute it, we want to appreciate something of the objective geomorphology and ecosystem that exists whether or not humans are interacting with it. Realizing this, we can follow the argument that landscape perception needs to be science-based, as well as participatory. Science becomes the primary avenue for perceiving land- scapes, better than any other—necessary though not sufficient for their most adequate understanding.

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