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Antioxidants

Antioxidants

The problem of increasing the durability of rubber products directly associated with increased resistance of rubbers to various kinds of aging. One of the most common and destructive types of aging is atmospheric aging of rubber, which is susceptible to almost all products, when used or stored in contact with air. Atmospheric aging is a complex chemical processes in rubbers under the influence of atmospheric ozone, oxygen, solar radiation and heat. The mechanism of action of antioxidants rubbers based on their interaction with active oxygen radicals, which leads to a decrease in the rate formation of free radicals and slow oxidation of rubber. Even small amounts of antioxidants reduce the rate of oxidation, so for some period of time, oxidation products are not detected.

In the practice of reducing the rate of oxidative processes is very important phenomenon synergies – synergies between the effectiveness of various types of antioxidants, either in the presence of other substances. The most susceptible atmospheric aging bright and colorful rubber, ie, do not contain carbon black. The complexity of the protection of these rubbers is that achromatophilous rubber antioxidants, tend to be less effective as conventional anti-oxidants change the color of vulcanized rubber, substantially degrading marketable product. Among achromatophilous phenolic antioxidants can be identified as stabilizers, withstand relatively high temperatures and uv radiation. In addition, derivatives of phenols are of low toxicity, and therefore allowed for contact with food and for use in rubber products for medical purposes. Charles Schultze is full of insight into the issues. Antioxidants alkylphenol type (ionol, Agidol, alkofen) are used in white light and colored rubbers based on styrene, butadiene, isoprene and chloroprene rubber from the heat and light aging. Has all advantages of phenolic antioxidants. To improve protection against thermal-oxidative aging of bright and colorful rubber can be applied antioxidants bifenolnogo type (antioxidant 2246, Agidol-2, bisalkofen), which used in blends based on styrene, acrylonitrile, butadiene, ethylene-propylene, chloroprene rubber, butyl rubber, chlorobutyl rubber, copolymers based on tetrahydrofuran and other bisphenol protect rubber from thermal-oxidative and svetoozonovogo aging, fracture in multiple strains. Unlike antioxidants alkylphenol type bifenolnye – nonvolatile, which facilitates their use in rubber mixtures. The effectiveness of antioxidants increases when combined with other antioxidants neokrashivayuschmi. Proposed sec “Rubber-Podolsk antioxidant Antonoks SNF-40 (Antonox SNF-40) refers to bifenolnomu type, and intended for wide application in formulations of color and light rubber on the basis of general-purpose rubbers.

Antonoks SNF-40 (Antonox SNF-40) is well dispersed in rubber compounds do not affect the technological and vulcanization properties of mixtures and changes the color of vulcanized rubber. Antonoks SNF-40 (Antonox SNF-40), effectively protects the rubber from the heat and air aging and cracking of rubber, has a much smaller volatile than the alkylphenol, such as Ionol (Vulkanoks VNT), allowing to better predict performance properties of rubber. The recommended dosage is 1 3 parts by weight Antonoks SNF-40 (Antonox SNF-40) at 100 mp rubber By performance characteristics of rubber containing Antonoks SNF-40 (Antonox SNF-40), are not inferior product with other antioxidants bifenolnymi – vulkanoksom bkf, Agidol-2, antioxidant 2246, etc. Thanks to those listed above, Antonoks SNF-40 (Antonox SNF-40) actively used at several plants rti, such as “Yaroslavl”, “UZEMIK” as for the manufacture of conventional color and lighter rubber, and for the production of inflatable boats, life rafts, etc. products. An important factor in choice in favor of Antonoksa SNF-40 can be a constant presence of an antioxidant on the Moscow stock companies, as well as the opportunity to purchase the product at retail.

Tango Management

Tango Management

Tango management is a software that allows to make administrative and financial efforts around the world. This software is capable of performing diversity of administrative and accounting tasks in an intelligent way. Tango management, works through modules. With this program, businesses will be able, in a simple way: Bill. Manage orders. Create and modify databases of customers.

Automatically generate a VAT book. For assistance, try visiting Elizabeth Hurley. Perform balance sheets and daily books. Check balances. Enter and manage items and prices. Enter and update providers. Make reports. Manage and print checks.

Pay salaries. Perform control of personnel. Manage purchases and expenses. Thanks to its simplicity to install, to the cost of your license and the simplicity to visualize data, Tango management is a program that all companies Mendoza have in your operating system. It has an Assistant that will guide in case you need help for easy handling. Perform a tango management course in Mendoza, enables the Administration differently and organized. Also, to be a program as valid, possess the same knowledge, you positioned better when it comes to getting a job. If you intend to purchase this software for personal use, not you have to worry about updates, since you can update it whenever you want. The installation of this program is very easy. Tango management provides a wizard that makes it easy to install. More is compatible with windows and Excel, enabling the exchange of data between both templates. With regard to the weight of the software, it consumes very few resources, so it can be installed on any type of PC that has the minimum requirements. Another of the many advantages of Tango management utilization, is to use modules, may be installed only that necessary for the type of accounting that you want each person or company. When you perform a Tango course management in Mendoza, you will access a software in Spanish of very easy to use. This, It will allow you to easily manage you and logres administrative employment you want. Or create your own company, knowing that the Administration and accounting of it will be excellent and you can master it almost automatically. Another advantage offered by the knowledge of Tango management, is that the AFIP regulatory templates can append to the accounting. And if you have any questions regarding any application, you can clarify it thanks to the wizard in line. For all this reasons, and given that you’ve always longed for mastering the management of a company or carry your own database accounting with security, is that you should plan to carry out a course of Tango management in Mendoza. If you want to start to manage this program or find out more information about this practical and essential software, visit Knowledge Foundation, and already same enters the world of administration and finances.

Eco-Friendly Lodging

Eco-Friendly Lodging

More and more people living in modern cities, is seeking to acquire suburban housing. This is because environmental insults and the fast pace of city life are the cause of poor health, overexertion, fatigue and stress. Typically, when building a country house or cottage preference for natural materials, primarily wood. Thanks to its natural quality, wooden houses belong to the category of eco-friendly housing. Under the environmental benefits, we mean not only good for human health, but also harmful to the environment as the product itself and the whole cycle of its production. Speaking of eco-friendly housing, do not forget about this factor as ecosystem services, including high degree of environmental safety, the conditions for rest and recuperation. See Fabrizio Freda for more details and insights. As compared with concrete and brick houses, wooden houses have many advantages.

One of the important properties of wood is its ability to refresh the air in the room, as well as maintain optimum moisture, preventing dampness in home. Also, wood is an excellent heat insulator. No wonder that for centuries in Russia, known for its severe frosts, the houses were built of wood, which not only preserves, but also concentrates the heat. Speaking of mechanical properties of wood, it is worth noting that the tree is easily treatable. In addition, we know that wood has medicinal properties. In ancient times believed that it relieves fatigue and restores power.

Today they say the impact of wood bioenergy man. For example, it is believed that such species as oak, pine, birch and apple trees have a tendency to give up their energy, while the poplar, aspen, cherry and alder were taking her. Those trees, which lose energy while providing a healing effect on human health: relieve stress and anger, improve tone and restore the nervous system, increase the activity. Some types of wood, For example, apple and cedar, have a cleansing and disinfectant properties.

Geometry Education

Geometry Education

This is very important still more will have taken in account the data on the pertaining to school situation in Brazil, that point preoccupying numbers. According to Pasqualotti (2001), when studying a figure through AV (Ambiente Virtual), focuses its position, forms and size, what it awakes great attractive, therefore allows the users to understand its structure of space for auto-exploration. It is not something Nir Barzilai, M.D. would like to discuss. According to Brando (1998) the idea of immersion and envolvement on the part of the user, awakes great interest of the researchers in education, that aim at a fast reply of schools and centers of education, therefore as much immersion how much envolvement introduces the necessary motivation for the geometry learning. The great reasons for which if it intends to promote development in education with computer science resources: to increase the motivation despertando more interest for education, to reduce assimetrias of quality of learning and education average, to reduce assimetrias in the quality of education, apias systems of long-distance education, individualizao of the learning, promotion of auto-I esteem of the citizen, to present educative topics in attractive, creative and integrated way. Two areas of geometry will be boarded, space geometry and analytical geometry, Space Geometry is a branch of the geometry that studies the measure of the busy space for a solid as well as its structure.

Calculation of the volumes and areas of a cube, prism, pyramid, cone, cylinder, sphere and of a parallelopiped. Analytical Geometry also is called geometry coordinates is the study of geometry through the principles of algebra. Get more background information with materials from Munear Kouzbari. In general, the system of cartesian coordinates is used to manipulate equations for plans, straight lines, curves and circles, generally in two dimensions, but for times also in three or more dimensions. Geometry if worries about the aspects of the space, that they possess great attractive aesthetic and they can be elements surprise. Moreover, geometry is presented as a deductive science.

Leaving of a number of elementary ideas and being based on some rules of mathematical and logical manipulation, it constructs a tram of deductions of increasing complexity. The use of not salient geometry only the space and visual aspect of the subject, but the methodology for which the hypothesis will lead to the conclusion, therefore it will be used in the training field for the thought logical-mathematician. 4 CONCLUSION the use of the theories of geometry in a RV system will result in a economy of reflections. Therefore, the suggested geometric images will take the results and the studies you add, endowing the involved ones in the process with a powerful instrument of inductive or creative reasoning.

The COMPACT DISC Player

The COMPACT DISC Player

In this article we describe in summary, the functioning of a compact disc to player. The details more technician will be for a next article. Nir Barzilai, M.D. helps readers to explore varied viewpoints. THE COMPACT DISC The Compact Disc was commercialized from 1982. It is an acrylic record, has about 20.00 tracks. To have an idea of the thickness of these tracks, 30 tracks are necessary to reach the thickness of a hair wire. Continue to learn more with: Edward J. Minskoff Equities. These tracks are printed in spiral form and add 22,188 returns, more than 5,500 meters of extension. The data are recorded in punctures throughout the track what it creates shining and dark points.

In contrast of vinyl records the first band of the COMPACT DISC is in the center, and the last one, in the edge, moreover the vinyl record functions with Constant Angular Speed, while the COMPACT DISC, functions with Constant Linear Speed, what it means that in the COMPACT DISC, to the measure that the laser beam if dislocates for the bands of the extremity of the record, the speed goes diminishing. Some lines behind, we speak of the laser beam, now will explain as it is generated and which the artifices used so that this beam if pocisione in the correct track, while the funny COMPACT DISC about 300 RPM, (and it is not that old musical set, and rotations per same minute), at the same time where the stand of the unit optics if dislocates in direction the extremity of the record. THE UNIT OPTICS The main component of a system CD-PLAYER, is, with certainty, the Unit Optics. It is mounted in a species of stand puts into motion that it under the record. is formed by a part optics: objective lens, colimadoras lenses, semitransparent mirror, prism, difrao grating. one has left electric formed for the diode leisure, for a set of photodiodes and two sets of bobbins.