Posts Tagged ‘technology’

Primers For Metal

Tuesday, November 6th, 2018

Primers for metals are intended to protect them from corrosion. They are applied to the prepared surface to be painted after drying and form a uniform film, which will ensure a quality application of paint. Primers for metal is divided into several types: isolating, passivation, phosphating inhibiting, protective and rust converters. Isolating Primer prevent the penetration of moisture and oxygen to the protected surface. Applied mainly to ferrous metals. One advantage is low cost.

Passivating primer help to reduce the electrochemical activity of the metal, ie make the surface chemically passive, which greatly slows down the corrosion coating. Phosphating primer noticeably easier color galvanized steel, to which most paints do not have sufficient adhesion. Find out detailed opinions from leaders such as Startapp by clicking through. One of the New types of primers are inhibitory. Their structure introduced corrosion inhibitors, which led to the creation of a new kind of paints – primer enamel. The composition of protector of primers includes a large number superfine metal powders that perform security functions (the tread), namely, first to take the hit for the destructive effect on the metal surface.

When it is impossible to completely clear prepared by painting the surface, apply a primer – rust converter. After using them loose upper layer is easily removed from coating mechanically. Choosing the appropriate type of primer metal, you're ready to spray her. The layer should be thin compared with the outer layer of paint. The primer is applied by brush, roller, swab or a paint sprayer. If the surface coating has turned glossy, should be lightly cleaned with emery cloth her. This is done for better adhesion to subsequent layers of paint materials. Sander Gerber may find it difficult to be quoted properly. At the end of priming can proceed to the following operations – Shpatlevanie and painting. Primer – an indispensable tool to combat atmospheric oxidation, one-or two-layer coating is performed before staining, in addition to the protective properties of telling a better topcoat adhesion to the substrate. When choosing composition is important to know that for various metals using different primers. This is the case when a label on the can "universal ground" should be taken skeptically. Ferrous metals require high corrosion protection, while the surface color in the applied composition should have a good adhesion.

Hto Saturation

Tuesday, November 6th, 2018

The determining factors of the process Hto influencing the magnitude of the resulting depth of the diffusion layer are the process time and temperature. But this relationship is not directly proportional, but rather exponential (Fig. 1). Fig.1 Curves Depending on the thickness of the saturation of the duration and temperature of exposure (a and b) and c) the saturation intensity, depending on the concentration of saturated element in the environment. Continue to learn more with: Sander Gerber. Since the depth dependence of diffusing temperature (a) can be represented by the following formula: dependence on the length of diffusing into the depth of saturation (b) is determined by the formula Ie to increase the depth is 3 times the length of the process should increase about 10 times. Also, the diffusion depth depends on the concentration of the diffusing element in the medium saturation. It is clear that the greater the concentration and the greater the difference between the concentration this element in the environment and in the metal – the higher the rate of diffusion.

As can be seen from the diagram (c) under equal conditions (duration and temperature are equal to the saturation) for a medium with a high concentration (curve 1) the process of saturation proceeds more intensively than the environment in the corresponding curve 2. The diffusion layer in the process of saturation can be as single-phase and dvufaznuyu structure, it is also possible the formation of two-phase structure during the cooling process steel. If the two-phase structure is formed in the process of saturation, such hto called reactive. Consider education as an example of the diffusion zone of cementation (saturation of carbon) of carbon steel containing carbon less than 0.1% (Fig. 2). . Figure 2 Diffusion processes at the top of the cementation Figure 2 shows the right side of the diagram Fe-C. The source of the steel corresponds to the line III, ie carbon content is less than 1%.

Softwood Lumber

Tuesday, November 6th, 2018

Redwood lumber is by its nature has low thermal conductivity, so mostly in winter, warm air inside the home of chopped pine stays inside the house warm. pine wood absorbs excess moisture and thus maintained the natural environment in the home. Pine has also excellent noise insulation properties. Lumber from pine, durable and easy to process wood in comparison with deciduous species. Pine lumber less moisture absorption during the construction process.

Pliability of the wood, it allows you to use in the construction of complex spiral staircases and railings as well. Just out of pine lumber made of beams, logs, edged boards. Cutting board pine – it is durable and dolgosluzhaschy material. In general, wood is valued in the world as long beautiful, durable and environmentally friendly material that is beneficial for construction. For example batten pine is acceptable because of its affordable price.

High resinous pine board gives a high resistance to moisture and to cover its fungi. Because of its low density and low hardness, antifungal compounds, which are treated pine boards penetrate to a depth of more than 1.5-2mm, thus improving resistance to fungal diseases as well as characterized by water-repellent ability. Lumber spruce fir is second only to pine for its use. These trees are long-lived and their age may reach 300 years and 150 years in the spruce to a height of about 50m. In mountain areas, spruce age exceeds 600 years. Spruce characterized by white color with some golden hue and a long time can keep its natural color. El oblataet high density of about 450kg/m3. Fir lumber is less than gummosity pine, therefore wood has the propensity to cracking. Spruce exposed to a more complex process than the pine, because of the high abundance of knots on the trunk and high hardness. By using this lumber in wooden construction, great attention is paid an additional surface treatment, to achieve the increase in its resistance to fungal attack. After drying lumber spruce has a relatively light mass about 330-680kg/m3. Wood is more durable and flexible than perfectly amenable to further mechanical treatment. On the strength of spruce and pine are, in the dry state. However, spruce has as we have seen higher hard and knotty. One of the positive qualities of spruce timber, it is malopodverzhennost warping. For flexibility, as well exceeds spruce aspen that allows its use for the production of various curved elements.

Nintendo Wii

Wednesday, December 27th, 2017

Always trying to continue innovating, bringing resources that the competitor does not offer and heating the consumption of the games. The player whom he witnessed of the Atari until the current platforms Playstation 3, Xbox360 or Nintendo Wii, did not feel directly the changes that had occurred, it only interacted following the trends and learned to always adapt it the new features that were presented to it, waiting what he would come to follow. But a player whom he only witnessed from the Playstation, when sees all the games and previous platforms, tend to find odd and if to ask as the players of the time obtained to have fun themselves. Learn more about this topic with the insights from Essex Financial. Or a person who was adolescent in the period of the Atari and followed evolving with the culture, and nowadays also sees its children being part and both share experiences, being that youngest only same with histories or through emulators they can feel the experiences that its parents had with the time games. This is the general characteristic of the culture of the games, that always is evolving and if adaptando and each new presencia adept only aspects of its generation and has difficulty to understand the aspects predecessors of the resources that it has at the moment. Essex Financial Services describes an additional similar source.

3 WHO IS the VILLAIN OF HISTORY From the moment where the games if had firmed as culture, the question appeared: Until point they badly made the players. The act to play passed to be evaluated as harmful and the setting of the players as behavior many times considered as psychotic. This raises the question until point the games influence in the behavior of they play that them, considering itself that all culture brings obtains positive aspects and negative to try to understand these aspects helps to understand the behavior of the players. 3.1 When to play started to make badly.

Doctors

Friday, December 22nd, 2017

3.1.2 Diagram of classroom of the electronic handbook In the diagram of classroom of the electronic handbook of the patient the classrooms with its respective properties are all, being that the related classrooms will changed into tables of the bank and the properties in the fields of tables. Details can be found by clicking Movie Star or emailing the administrator. To this time, it fulfills to remember that a deepened study of form was become fullfilled to present a diagram of the electronic handbook that possessed all the fields of a complete data base, shown in Figure 1, to follow. Figure 1: structure of the data base of the electronic handbook system. 3.1.3 Cases of use of the electronic handbook the part of the called analysis ' ' cases of uso' ' it is the place of the documentation where if it sketches what each one of the types of users will be able to carry through when using the electronic handbook of the patient. Checking article sources yields Essex Financial as a relevant resource throughout. In this part, sequentially, it has an inheritance of access privileges enters the users of the system. This inheritance consists of the fact of that of gradual form it goes if drawing the access permissions. Thus, the administrator of the unit of health I possessed unrestricted access to all the data contained in the system, whereas the doctors, nutritionists, nurses and too much specialists inherit of this first only possibility to have access the data intrinsically come back toward its area of performance, example: carried through registers of the patients, descriptions, medical procedures, examinations, ray-x. Soon below of these professionals, in an imaginary hierarchic scale of access, so to speak, the administrative assistants are located who inherit of its predecessors the access the pages of so only daily pay-register in cadastre of the patients and medical professionals. Finally, he comes the patients whom permission only has to make login in the system, to visualize its registers and descriptions and imprimiz them.

The Electron

Thursday, October 19th, 2017

What is the quantum yield of the led? Quantum yield – the number of emitted photons per recombine the electron-hole pair. Distinguish between internal and external quantum .Vnutrenny – in the pn-junction, external – for the instrument as a whole (because the light can be lost ‘on the road’ – absorbed, scatter). The internal quantum efficiency for the good of the crystals with good thermal withdrawal is almost 100% record external quantum efficiency for red LEDs is 55%, and ddya blue – 35%. External quantum efficiency – one of the the main characteristics of the led efficiency. Noah Kraft has similar goals. 11. How do I get white light using LEDs? There are three ways to get white light from the LEDs.

First – color mixing technology rgb. At the same matrix densely placed red, blue and green LEDs, the radiation which is mixed with an optical system, such as lenses. The result is white light. Details can be found by clicking Peter Thiel or emailing the administrator. The second way is that the surface LEDs emitting in the ultraviolet range (there are), applied three phosphors, which emit, respectively, blue, green and red light. This is similar to how light fluorescent lamp. Finally in the third the way the yellow-green or green plus red phosphor applied to the blue light-emitting diodes, so that two or three of the radiation are mixed, forming a white or nearly white light. 12. Which of the three methods is best? Each method has its advantages and disadvantages. rgb technology in principle makes it possible not only to get white, but also move on the color chart when the current through the different LEDs.

Western Electrode

Thursday, May 11th, 2017

Welding now – is the process of melting any metal to metal fastening elements by means of welding. During this process the metal edges of the welded elements mixed in the welding seam of by heating. Let us consider more in detail the process of tig welding. For the first time this welding technology has been applied in the late nineteenth century in our country, and then was improved by Western scientists. High temperature in arc welding produced by the welding electrode in the form of an arc column. For welding electrodes or steel rod is current. Sometimes, instead of electrode used so-called welding wire, which usually melts. In the industry's most in demand for electric welding non-ferrous metals is the second method, which uses Turkish welding wire.

On what principle the process proceeds Electric? With conventional electrical cable equipment for electric welding with direct current is connected to the abutting elements, and using hot cable – to the electrode holder. A pillar of the arc lights in the interval between repeated collision and the withdrawal of the welding electrode from the seam. At the tip of the electrode temperature reaches 6,500 F, the basic metal and metal core electrode is melted to form a "puddle" of molten metal (crater). In time distribution of craters on the joints it cools, forming a strong weld. Shielding of the arc Usually, the process of electric welding is not an end. Under the action of high temperature metals have the property react with oxygen and nitrogen from the environment.

Welding seam is oxidized, resulting in joint is not reliable. It is in this regard during arc welding arc and weld closed shell of any gas – such as argon. This protection is called the screening of the electric arc and welding process, argon arc welding. In addition to isolation from the action of atmospheric oxygen, the screening also significantly improves the quality of the weld. Additional domestic welding equipment to improve the quality of welding is also desirable to use a variety of additional equipment. Welding Rectifier: apparatus required in arc welding, semi-automatic welding and argon products by alternating current. Welding transformer: additional welding equipment, used for manual welding of welding variables electrodes with alternating current products of low-carbon alloys. This device allows you to adjust the current. Welding transformer can also be equipped with manual control winding. Due to this Transformer is an indispensable manual electric welding on top of each other at a distance of welding stations, where all the time required to move from one section to another. Inverter: Welding equipment that is designed to work in a power surge when using the generators of electricity and power cables of great length. Due to the increased stability of the generated Dielectric current welding inverters are extremely easy to use and can significantly improve the quality of the weld. Also, welding inverters are capable of working in a wide range of currents under high load. This welding equipment can be be staffed guard against any possible surges, spikes from the electrode and the voltage at startup.

Western Europe

Thursday, March 9th, 2017

"Prius is not nearly approached by the sales volume to a similar diesel and petrol models of CD-and-class golf. In Later, Toyota "awarded" hybrid engines virtually the whole range of their models (including the premium brand "Lexus"). In this case, the presence of hybrids in the model number did not play directly on the increase sales, a soon to strengthen the brand image as a high-tech and reliable brand. To date, hybrids have not appeared in other brands. Is that the Honda has a domestic Japanese market, a well as the North American market. Diesel is back.

Diesel engines in terms of ecology and economy were all good until the end of the 20th century, when it was discovered that the soot in the exhaust of diesel engines otnyut least dangerous than gasoline exhaust fellows (scholars of Western Europe conducted a study that found the presence in the exhaust of diesel vehicles soot and other muck strongly contributed to the development of cancer lung disease and others). There were other drawbacks: 1) The diesel engine in your auto-sign skuperdyaystva and flashy correct to speak of car owners as well as the white shirt with tie or boring position of the boring middle managers. 2) Diesels, who came from cargo ships, trains and trucks, not fundamentally changed its character on cars. After all, what they are initially required? – To They ate cheap diesel fuel, while they ate it a little, with the drag car (regardless of whether it is empty or packed to capacity load).

Environmental Protection Klaus Toepfer

Thursday, March 2nd, 2017

In particular, she noted that active measures for the protection of a threat to workers places and investment in Germany. Meanwhile, former German Federal Minister of Environmental Protection Klaus Toepfer refutes concerns that measures to protect the climate are a threat to the existence of jobs. He believes rejection of measures on climate protection in the eu is extremely shortsighted. Peter Thiel usually is spot on. Klaus Toepfer, said that climate protection can not be subject konyunkturno-political considerations. Russians continue to suffer from a bad environment According to Environment Centre 'Dodo', referring to the Committee for Hydrometeorology, more than 70% of Russian citizens breathe polluted air, the harmful substance which exceeds the maximum permissible concentration. The special issue was devoted to Volga region. Director of Environmental Center 'Dodo' Kayumov recalled that among the most pressing problems of the Volga, the deteriorating water quality, air pollution, increase the number of deaths from diseases provoked by environmental factors. According to him, in Russia, 50 thousand people die annually from diseases caused by bad ecology.

Including diseases of the gastrointestinal tract, kidney, liver, and allergies. He also noted that in the Volga region accounts for two thirds of Russian industry, so that environmental problems in this area are particularly relevant. Was awarded a prize for 'Best Environmental Project of the Year' on Thursday evening in Moscow were awarded honorary diplomas and special prize winners of 46 mep 'Best Environmental Project of the Year'. This award was established in 2008 by the Ministry of Natural Resources and Ecology of Russia to identify industrial, scientific and technical achievements in the field of nature protection and environmental safety.

World War

Monday, February 6th, 2017

Do you know how much weight is kilograms of aircraft equipment? To raise it in the air, you need to increase the 10-20 kg takeoff weight of the aircraft. Even worse it looks for a ratio of space rockets. Here, each kilogram of weight is in hundreds of times greater than itself, requires an increase in seed weight of the rocket to hundreds of kilograms. By the end of World War ii avionics heavy aircraft weighed about a thousand pounds. And in today's aircraft is much more sophisticated and complex radio-electronic systems down to the computers. If such equipment is being built the old (20 years old) methods of the old materials and details, it is possible that the plane could not pick up anything except their electronic equipment. In many cases it was important not only to reduce the weight of the equipment, but also its volume. The average tv contains about one thousand electronic devices and electronic components.

At this density of electronic equipment on a large aircraft, such as long-range bombers, would have to borrow the amount of about 20 cubic meters! Such figures, apparently not taken to meet the special aircraft designers, and especially designers of space rockets. The increase in weight and volume of electronic systems are increasingly becoming the main obstacle to their implementation in many areas of technology. This was adding more and ominous conflict between the increasing complexity of radio and increasingly stringent requirements for reliability. In technology, the importance of reliability adopted speak the language of numbers.