vpn protocols

What VPN Protocol Should You Use? PPTP v. L2TP v. Open Tunnel v. IPsec

If you’ve bought a new VPN connection, you might be a tad bit confused about which VPN protocol you should connect to.

VPN does help make your connections more secure, and you need to know the right VPN protocol to use.

Which VPN Standard Should You Use to Connect Online?

It all depends on how you intend to use your VPN services. We will take a look at which VPN standard would be right for you. Some of the VPN protocols, as we shall see, are best to avoid. If you would want to know more about VPN standards and choose a good VPN provider, check out the VPN service at AntaNET website.

When Should OpenVPN Be Your Choice?

It all depends on the type of security you need. If you need your connection to be secure, OpenVPN is the way to go. The SSL protocols ensure that your information remains encrypted, and the web traffic is often indistinguishable from the HTTPS traffic that you see online.

There is a problem, though – increased security sacrifices speed. Also, you would need your VPN provider to give you a desktop and mobile application so that you can access the OpenVPN standard; it isn’t compatible with your desktop or mobile OS otherwise.

When Should You Go In For PPTP?

If you have decided to go in for VPN to access geo-restricted content, and are looking for fast access to the Internet, PPTP is the way to go. You can just choose the VPN of the country you’re trying to geo-target, and use PPTP to access any blocked content.

The streaming is fast, making it a great way to watch movies or play games, no matter where you are in the world.

Don’t use PPTP if you’re concerned about your security. PPTP is known to have many security issues, and hackers can easily decrypt messages.

Should you go in for L2TP?

We wouldn’t recommend you going for it. The reason is simple – while PPTP does offer some protection, L2TP offers none. It’s open out there, and the only things you would love about it are the fast internet speeds, and its easy integration abilities with your desktop or mobile OS.

More, it’s easily distinguishable as well since it uses the UDP port, and if you intend to access geo-restricted content, you may find some sites identifying you. Getting past those firewalls can just seem impossible, and hacking can be simple.  It’s something that we recommend you shouldn’t use ever – it’s just not worth it.

Should you go in for IPsec?

IPsec is secure, but it’s even slower than OpenVPN. This is because it’s a two-step process involved here. The web traffic is first converted to L2TP and then encrypted, which slows down web traffic considerably. On the other hand, it’s not as secure as OpenVPN, which means that you wouldn’t benefit from using it.

We would recommend you to use OpenVPN whenever possible. If you aren’t concerned about security and need good internet speeds, switch to PPTP. Using the other two protocols don’t really make a lot of sense.

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nanotechnologies in medicine

Nanomedicine is a new word in the science and social life

Exciting possibilities with using nanotechnologies are opened for healthcare. The problem is that many methods and techniques are in process of trial and error, and only handful of them is actively used. Most of them do not have any proper names, so we call them, by and large, nanotechnologies.

First and foremost, drug delivery should be taken into account. One applicant has been developed that has ability to delivering remedy, light and even heat to cells that required it. It could be cancer cells or any other which suffer from disease. There are sort of engineered particles that tend to attach to affected cells and treat them directly till to full recovery. In that way, damage of healthy cells is avoided and let detect ill cells faster. Researchers are also elaborating sort of nanoprticles that could be used for defeat viruses. These nanoparticles, in fact, do not destroy molecules of viruses, but prevent them from increasing the quantity in the bloodstream. The successful results of such techniques have been shown in the labs.

As for using nanotechnology in diagnostic method, scientists consider that nano technologies could be used in ordinary lab check that could help to detect some affected cancer cells in the body. It was developed carbon sensor nanotubes which based on gel. This will show inflamed parts of body and then detect, find out cases that trigger them and treat illness. It happened with the help of the level nitric oxide in the bloodstream. Another example of applying nanotechnology in medicine is elaborated by researches of Michigan University. They have found the sensor that could detect low degree of cancer cells in the bloodstream. This kind of technology deals with fluorescent molecules which tag cancer cells and center of their highest activity. Thanks to such bioinstrumentation as highly-precise LIG Tech nano scope, scientists could observe how cancer cells react to both nanotubes and fluorescent molecules.

nanoscopy uk

However, not only cancer is the most crucial and vital disease nowadays, but also heart illnesses should not be underestimated.  The vast majority of people suffer from high pressure and heart attacks, so nanotechnology also offered some extraordinary outcome how to solve this problem. Researchers have tried a building delivery devices that transport drugs and nano devices to the place where harmful cells are occurred. In addition, self-assembling molecular stents, which help to support arteries, were contrived. So, there is likelihood that people, who have ill heart, should not worry about future perspective and live life to the fullest.

There is center for nanotechnology in the Arizona University. The point is that this organization can help disabled patients with the help of nano technologies. Professionals and scientists came up with idea of molecular prosthetics, which can repair or change defective cellular circumstantial. Furthermore, retinal and cochlear and bionic implants are also available. Artificial muscles, joints, tongues, noses, kidneys and other parts of body are also the result of nano technological process.

In conclusion, nanomedicine have occupied prominent place among place and successfully developed in such directions like delivery of remedy, diagnostic method, finding dangerous cells, helping with heart disease and using molecular prosthetics to assist disabled patient.

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The Emergence Of Polyurea

Back in the 80s of the last century the technical literature mentions the polyurea for the first time. Just then, as a result of a reaction injection molding techniques (RIM), used in the automotive industry in the manufacture of bumpers by Texaco Chemical (which became later in the Huntsman Corporation), instead of the traditional high molecular weight polyurethane polyols used polyetheramines – a substance similar to them, but containing the ends of macromolecules hydroxyl and amine groups. This discovery has led to a reduction in molding time parts and to a few seconds pushing the productivity to incredible level.

The same firm adopted the idea of ​​using this new technology in the field of chemical sprayed coatings. Its implementation took more than ten years though. A series of extensive researches on the synthesis of amine crosslinkers (chain extenders) and isocyanate oligomers were carried out, which contributed to a fundamentally new type of equipment and technologies that helped to overcome such problems as substrate wetting, low adhesion between the substrate and the coating and mediocre quality of the finished coating. The new technology is now oftentimes called ‘sprayed polyurea elastomeric coatings’. In the late 90s of the twentieth century the United States and Canadian enterprises began to develop the market quite rapidly. In 2000, the Polyurea Development Association (PDA) was founded, which includes raw material suppliers, equipment manufacturers and contractors who install coatings on objects.

The geography

The most significant demand of sprayed coatings technology applied to the body pickups, popular in America, making them more durable, as well as a protective layer over the polyurethane foam insulation on roofs. At present, the volume of polyurea in North America is estimated at tens of thousands of tons per year, the market develops sprayed coatings and in Asia. In Europe, the market has started gaining momentum significantly during the recent years. The UK market is fueled by a number of innovators, such as Britannia, concentrating its efforts on producing totally efficient roof coatings and roof waterproofing products, such as Polyshield line-up.

Polyurea is the most promising to date material for coatings having a truly amazing properties. Formulation of raw materials is tailored to the requirements of the final product. All variety of properties polyurea coating is achieved by variation of the original components, so we get the material with predetermined properties.

The benefits

Protective coatings of polyurea stand out from the other types of coatings with strength, elasticity, abrasion resistance, durability, resistance to aggressive chemicals, the lack of effect on the coating of moisture and temperature and high adhesion. Polyurea technology is characterised by rapid response times. Curing occurs within a few minutes, which makes it possible to walk on the coated surface almost immediately after its application. Polyurea elastomers do not contain volatile organic solvents that make them nonflammable and nontoxic.

As a result, improvement of formulations and equipment expanded and the possibility of applying polyurea, especially where the possibility of other materials is exhausted. The technology now offers:

– waterproofing and decorative coating of swimming pools, facing tanks made of concrete and metal, septic tanks, dams, canals, wells

– waterproofing of foundations, floors and walls in rooms with high humidity and corrosive to concrete aggressive liquids

– flooring for shopping centers, multi-storey car parks, industrial premises and many more.

 

 

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The industrial application of ultrasound technologies

Ultrasonic systems are applied in numerous industries – their cost-efficiency, effectiveness and eco-friendliness are the vital aspects giving the technology a massive popularity boost. Mentioned below are the most common spheres of ultrasonic use according to Hilsonic, one of the leading ultrasonic cleaner manufacturers in the UK and the company deeply involved in ultrasound technologies development.

Degassing

The impact of sonication on melt significantly increases the intensity of the formation of bubbles of dissolved gas, and as a result, its content can be reduced by two times or even more, even if sonication is not prolonged. The occurrence of gas bubbles in the melt is followed by flotation of scattered hard nonmetallic inclusions, which increases the density of the casting and melt flowability, enabling to penetrate into the smallest recesses of the mold. Further degassing, there is a significant decrease in the grain, which results in further improvement of physico-mechanical properties of the casting. Melt treatment is usually performed immediately before casting and may be carried out both in a stationary volume of the furnace or mixing bucket using a submersible radiator with a working tool of refractory materials, and by ‘scoring’ the metal in the channel by means of a special tray or using a multi-layer filter screen of glass that provide, besides ultrasonic degassing, filtering the melt. The technology is applicable to a low-density low-melting metals and their alloys.

Intensification of galvanic and chemical processes

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