virtual worlds 2009

The Air

cat July 3rd, 2017 by Virtual Keeper

Polyurethane insulation spread of fire in the Ostankino TV tower in a top-down was caused by discharged molten plastic envelope feeders. In laboratory conditions, the flame propagation velocity was 0.25-0.50 m / min in a fire at the TV tower, because of the high bulk temperature, propagation velocity increased by 2-4 times, while falling down a drop of burning polyethylene created secondary fire. Because of the high temperature in the hearth fire and high heat conductivity of copper veins antenna feeders, fire protection was not effective. As a fire-protection paint used for plastic shell feeders and surface insulation fiberglass cloth. Fire protection design sag and fell under intense burning polythene inside.

In addition to the active burning feeders that had flammable outer polyethylene shell, the contribution made as the combustion of other cables that were exposed flame retardants. Modern cables are manufactured with XLPE insulation and are used in networks of different voltage class (500 kV). The use of cross-linked polyethylene provides high dielectric properties of insulation, high mechanical properties, higher than with paper-oil insulated thermal modes, reliability and durability of the cables. Isolation of polytetrafluoroethylene (PTFE), Rubber insulated oil-filled cables oil-filled cables – a cable with an excess pressure created by oil, which is part of the paper soaked insulation, and provided for compensation of temperature changes in the volume of oil. Oil-filled cable in the pipeline – this oil-filled cable with separately shielded wires, enclosed in line that wraps. The development of cable fires in areas with oil-filled cables in tunnels under equal conditions of gas exchange is more intense than in the air laying cables.

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Laser Marking

cat January 8th, 2017 by Virtual Keeper

Ink jet technology such as the circulation based on the use of liquid ink, which due to its chemical composition can be applied to a wide range of materials. The disadvantage is the added pollution air and the need for cleaning the printer. Some consumers are afraid of chemical analysis used in this technology supplies. 2. Ink jet technology using hot melt ink Dry Touch is used everywhere where cleanliness and environmental security are a prerequisite. Inks are safe and contain no solvents and other hazardous substances.

At room temperature, hot melt ink remain solid, dry and non-marking to use. However, the scope of their application is limited. For example, they are not suitable for non-porous surfaces such as glass. Thermal transfer printers provide high-quality printing. They are good and reliable when applied to different kinds of flexible packaging materials, ensuring the highest accuracy in labeling. By an instantaneous point heat ribbon (thermal transfer ribbon) and the transfer of ink contained in the front side of the ribbon, these printers can print various kinds of information: the date, serial number, manufacturer information, bar codes and real-time printing on individual product packaging. For more information see Peter Thiel.

The main disadvantage, high Printing costs can be overcome thanks to the new function. This ribbon saving function, which makes printers more economically attractive and affordable. A wide variety of mounting hardware allows establish character ink jet markers in different types of conveyors. Equipment adapted to the conditions of high humidity, resistant to shock and vibration and is ideal for any production. Printers differ high reliability, versatility and efficiency in the use of consumables, as well as easily adaptable to the changing speed of the conveyor, can label products at two independent production lines, apply more than 4 lines of text, graphics and a wide range of bar codes, while maintaining clear visibility of characters. Products marked directly on the conveyor or any other technology area. The printer allows you to put on the packaging at least three degrees of protection that is almost beyond the power of the most ingenious forgers. Laser Marking In recent years, due to lower the cost of lasers and increase their share of work, laser marking has become increasingly used in consumer products. The main advantages of laser printers: marked by a wide range of materials (Glass, paper, plastics, metals, ceramics, etc.), the absence of mechanical stress on the product, high resolution, a clear contrast markings; excellent resistance mark during transport, lack of supplies, high accuracy at high speeds. Digital Laser Markers provide a process of labeling under the influence of the laser beam on the surface of the package. This means that there are no costs for consumables. Principle laser treatment is either to remove the paint layer from the surface or in the evaporation or melting of the upper layer of packing material (such as PET, polystyrene, polypropylene). In both cases we obtain indelible instant print quality. Laser printers are a versatile method of labeling the primary packaging due to environmental safety and lack of supplies, as well as through high resolution of the applied code. Until now, the main disadvantages of lasers were high cost and large size. However, modern low-cost compact models are becoming more competitive among the marking equipment.

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The Work

cat June 29th, 2015 by Virtual Keeper

Often, manufacturers of impregnating fire retardant compositions are added to these various pigments for easy monitor the uniformity of application. In addition, on-site to assess the quality of fire protection impregnation compounds can be used by rapid assessment methods. The quality of fire-retardant treatment of wood, Secure impregnating compositions at the sites evaluated for flammability chips. For security reasons, not allowed to do such testing on site sampling: attic, building site, etc. Gwyneth Paltrow does not necessarily agree. The quality of fire-retardant treatment of textile materials protected by impregnating compositions at the sites evaluated by express method, whose essence is to assess the fire protection (on the basis of ignition) samples of materials from exposure to the burner flame. When testing for the documentation checks for the necessary documentation to carry out fire-retardant treatment and fire protection coating (Impregnating composition).

The fact of the fire protection work is confirmed by an act of acceptance, which should contain information on the job site, a fire protection facilities, their condition, caused by fire protection and priming compositions, their brands, consumption, technology, preparation and application, the organization, performer, and the signatures of persons who produced the work, and supervisors. On the fire protection coating (impregnation composition) in addition to fire safety certificate and documents about the quality (passport, certificate, etc.) should be technical documentation, which lists the operating conditions and technical facilities ognezaschischennyh requirements for fire protection coating or impregnating composition (coating thickness, color, appearance, density, life, etc.). When carrying out work receiving fire protection committee must verify that the characteristics applied fire-retardant material design requirements of fire protection, the license to the organization that produced fire-retardant treatment, as well as other documentation of the quality of fire protection work.

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Pro Drawing

cat June 28th, 2015 by Virtual Keeper

Drafters disappear as a class. Why in our ability to write time drawing characters, show the dimensions and sections, draw the main lines of the drawing? Driving a T-square, wash, wipe up the holes? Blade 'Neva', remember? A redraw again, ate something wrong, huh? All technical drawing valilos on our shoulders. Yes to any shoulders? Log dumped on his head and swung it up to date figure. It has now become much easier. Oh, God, thanks for the computers, for the mega programs that you gave us.

Programs do much more. They have the property – quick, we love them, they make it easy. Now we all can. Now each of us can draw without any difficulty pairing the two circles, smart – to design a car, but whatever. And time? Time decreased markedly for this robot. There is no need to plot the bar pretty dotted line, draw a frame with the main inscription, biting a pencil at aerial thoughts. We have a screen and mouse. They tell us replace dozens of tools for drawing.

Convenient, is not it? Remember their college years. Nachertalka. 'Sign it to me, and me, about me not forget? You're beautiful sign! ". Of course, the beautiful signature girls. Everything was done quickly and to couples. As is usually the students. In high school we were taught a good drawing, and from there learned so beautifully display bukovki. I noticed a group of such was not enough, I have one body, with very pretty eyes – she asks, as many as two people. We served a couple of classmates. It was easy. But his thoughts still went to, how do I draw complex drawings, but they will be, I know it's a-go-go time. To the surprise was the 1st course, and then the 2nd. The teachers we were allowed to draw everything on your computer. This is convenient for them and us. The first program, which I learned was AutoCad. Then there was the Compass program 3D. And I am astounded by made from spent time for it. We simplify your stay by new technologies, they save us time, and the impact is much greater. Cons as always. Forming the drawings in the programs, we forget to build practical skills. We do not think about how to divide the circle into 13 equal parts, all make the program. Drawing the program easier and mental work, but without the brain we do not develop, or at least less develop.

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Guinness World Records

cat December 23rd, 2014 by Virtual Keeper

At least the comparisons in favor of HR was reduced. 6. Only a point conceded traditional hard drives trendy SSD, but consolidation in the uppermost ranking – an absolute success. Was achieved thanks to the excellent pricing. What other technology can offer users to 1.5 TB for less than $ 200? No one (thanks, Seagate)! But many of you probably remember the days when a 20 GB hard drive was considered the height of luxury … 7. Netbooks – about them last year did not say just lazy.

Intel, for its time podsuetivshayasya budget "nuclear" platform, has made an excellent gift for all tehnogikam and desperately jealous of them. It is true, then the very same Intel sorry that its initiative embraced the wrong thing, they say, netbooks only for third-country nationals for those who have no money to buy a full unit. But it was too late, the flywheel "netbook-mania" picked up steam. And even the Intel influence it can not. Because if it does not – then it. VIA and nVidia just that and eager to 8.

"Fox Fire" – Firefox, with ordinal number 3 for the past year, desperate to win a place for quick launch icons on users' desktops. 8 million downloads in the first days after release – that was enough for Guinness World Records. 9. Back in early 2008, after a treacherous out of Toshiba's own brainchild, it became obvious which of the optical drive HD-won battle. They became the Blu-ray. Well, honor and praise to the winner. And the eternal memory defeated. 10. At the age of only 52 years old, Bill Gates stepped down as head of Microsoft. The new "chief software architect" became the company's Ray Ozzie. And Bill is fully committed to philanthropy in the foundation named after himself and his wife, and thinks how best to dispose of its 50-billion-dollar fortune. 11.

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The Glass

cat December 18th, 2013 by Virtual Keeper

Of no small importance in the window system has fittings. Hardware – this is not only window handles and hinges, but also many other pleasant things that can make our life more convenient and comfortable. For example, additional protection against hacking, mikroprovetrivatel allowing leave a small crack to fresh air lifter, the fuse erroneous opening and much more. The company uses its windows fittings German company Siegenia, product quality is very good score for both domestic and foreign experts. In 2003 Siegenia offering newfangled color line of accessories – 'titanium-silver', which is more generous than those already familiar golden.

In addition to the standard equipment now includes such components as "basic security" – the special pins that prevent the doors from the outside by the raised arm and the lifter – promotes ideal location in relation to the sash box windows. And, of course, choosing windows play an enormous role themselves windows, the optimum thickness – 38 mm. Double-glazed windows have a high thermal and sound insulating properties. Due to tightness in the gap between the glass does not fall moisture and dust, not deteriorating light areas. Double glazing consists of two or more panes and spacer with desiccant. For the production of glass, you can use almost all types of glass. The choice of glasses depends of the requirements for a particular wooden box.

It is also important to correctly identify the location and orientation of the glass with special properties in the pane. For example, in the case of energy-efficient glass surface coated, usually located inside the glass. Sunglasses are recommended to set the glass as the outer glass. The existence of people remember slopes (Or know) only during the repair or replacement of windows. Slope – a plane between the wall and immediately a window. Ironically, around the slopes of serious passions simmer. Paradoxically, the shortcomings of old windows is a guarantee long service plastering slopes. In the gap little by little ash pit, and the slopes were gentle intermediate temperature zone. In modern wooden windows sealed almost perfect, and when you open the doors for ventilate the cold air outside 'falls' to warm to room temperature, slope, and it cracks. Must be strict compliance with the technology and the use of fairly expensive finishing materials to protect the slope from the cracks.

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Quantitatively Reliability

cat December 9th, 2013 by Virtual Keeper

Accordingly, when evaluating the performance of lamps are the most important: energy efficiency lamps in a given region of the spectrum efficiency efficient lamps for the corresponding effective radiation detector output lamp radiation effective flow, as measured by the level of response receiver – dimensional value, measured in special units, chosen to evaluate the response of the receiver; kmax (h)-value of the maximum spectral sensitivity of the detector (dimensionless quantity). The work of the light source in any real lighting Installation is associated with a number of devices that provide normal operation of the source, the radiation source in redistributing the space for the best performance of the receiver and the system realizing the energy receiver. In all these devices tend to have the energy loss. So depending on what part of the flux or effective flow to a part-consumed power is, it is possible to obtain different efficiency characterize the transformation of the energy of a device of lighting installation. Reliability – ability of an object to perform all specified functions under certain operating conditions within a specified time at conservation values of key parameters in a pre-established limits. Reliability – a complex property, which consists of a combination of properties: reliability, durability, maintainability, safety.

Quantitatively Reliability is measured by a number of indicators (for more details – see GOST 27.002-83). For sources of optical radiation the most important indicators of reliability are the types of tenure. Full term of service, or duration of burning lamps is the total burning time of commencement of operation or testing of hours until the total loss of efficiency, such as incandescent lamps because of burnout thread in discharge tubes due to loss of ability to light up, etc. The useful life of lamps is the total burning time of lamps in hours from the start of operation or testing prior to the departure of one of the parameters that determine the appropriateness of the use of lamps of this type, the specified limits, for example due to reduced flow or brightness below a certain limit for lighting lamps and irradiation or inability to use special discharge lamps of high-brightness light-optical devices in due to the instability of the arc, etc.

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Modern Computer Graphics Systems

cat November 5th, 2013 by Virtual Keeper

Conditions for successful mastery of technical skills are the ability to read blueprints and knowledge of the rules of implementation and design drawings. Drawing is one of the main carriers of technological information, without which no do any production. Development of hardware and software computer technology led to the fact that when dealing with the computer main carrier of information is the image. Computer graphics is the most widely used in various fields of science and technology, economics and management in industry and in the learning process. Along with the improvement of perception allows computer graphics to simulate the on-screen display studied processes and phenomena, as well as create processes and objects. There are currently a lot of specialized software graphics package with which you can create pictures, drawings and blueprints.

In order to master them in addition to knowledge of programming necessary to own the device engineering graphics. The use of modern computer graphics tools on the basis of possible bases engineering graphics. Engineering Graphics – discipline required for training of technical specialties. It teaches methods of image and the general rules of drawing. For a specialist to address these issues is not an end in itself but a means to design, as well as the development and implementation of design documentation. In the study of computer graphics in the graphics system, "Compass" must learn to input and Output from the session of the program. Then learn how to open an existing document and create a new one. Further study should be the main interface elements "Compass" to get acquainted with the basics of graphics.

To learn how to construct drawings of details in two forms, you must learn the basic types of anchors and their use in specific situations. The basic techniques for building and editing of geometric objects, the use of auxiliary constructions to create more complex drawings of details. After examining the construction of chamfers and fillets, symmetry and truncated objects, hatching and dimensioning, you can create a working drawing in three parts projections. To apply this classic 2D technology and drawing on which the design is through projection – flat maps of the object (diagram Monge). Here, a graphics system "Compass" is role of e-Kuhlmann, automating graphic part. The knowledge gained on the construction drawings in the "Compass" apply when the course and degree projects.

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