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A [url=http://www.eeqformwork.com/formwork-accessories/wall-tie/]wall tie[/url] is used to tie the internal leaf and external leaf constructed of bricks, blocks or structural framing with a brick fa?ade. The tie is placed in the cavity wall during construction and spans the cavity. Each end of the tie is specifically designed to embed into the mortar at a minimum depth of 50mm at each side. For buildings constructed before 1970, mild steel wall ties were used as best practice. Due to
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Vinyl sheet piles are made of poly vinyl chloride also known as PVC: a material with excellent resistance to weather influences and it has a long service life. Moreover, the material will not be affected by natural forces occurring in the ground, rodents, and salt or fresh water. [url=http://www.bioetp.net/pvc-sheet-pile/]PVC sheet piling[/url] has a number of benefits over traditional steel timber or concrete piling, including, costs, durability, ease of handling and a reduced environmental im
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Grupo Góngora es una empresa de conserjes en Madrid que cuenta con un grupo de grandes profesionales y expertos en el sector.

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La Osteopatía te puede ayudar a resolver lesiones osteo-musculares. En Fisioterápiate realizamos osteopatía deportiva en Fuenlabrada con profesionales especializados y con experiencia.

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Organic fertilizers are soil nutrient supplements that are minimally processed and whose nutrients remain in their natural forms. This is quite unlike chemical fertilizer, whose nutrients are extracted and refined.


This type of fertilizer is made from animal and plant waste, and powdered minerals. Manure, compost, bone meal, and cottonseed meal are good examples. These natural lawn care options can be processed in a factory, or, in the case of manure and compost, on a farm.


Here are five reasons why you should consider using natural options to take care of your lawn.



They Improve the Soil Structure: Natural fertilizer is incredibly essential to the soil. Over time, as it breaks down and decomposes, it improves the soil structure and its ability to retain nutrients. This improves the quality of the soil, making it ideal for the cultivation of strong, healthy plants. You’re trying to accomplish a lush, green backyard? Organic lawn care services should get you there.




They are Safe for Your Plants: Natural fertilizer slowly releases nutrients into the soil. Due to its slow-release property, it’s almost impossible to overwhelm and poison your plants with manure. This is a significant advantage over chemical fertilizers, with which it is possible to over-fertilize and harm your plants.




Natural Fertilizer is Environmentally Sustainable: Chemical fertilizers are soluble in water. Because of this, excess, unused fertilizer is washed away by rain, eventually entering groundwater and polluting lakes and streams. Organic fertilizer, on the other hand, doesn’t pose such risks. It is renewable and biodegradable, making it environmentally sustainable. Because it is natural, there are no risks of toxic salt and chemical buildups, which could endanger the plants on your lawn. In addition, it improves the soil’s moisture-retaining properties. This reduces the likelihood of bleaching.


Natural fertilizer ensures that your plants get the nutrients they need. At the same time, it helps improve the quality of the soil by enhancing its moisture and nutrient-retaining properties. Nearly 90% of real estate agents encourage homeowners to invest in their landscaping before they place their house on the market. This is the surest way of getting the most out of the deal.

 

About Pesticides and Herbicides


[url=http://www.hjagrifeed.com/botanical-pesticide-additives/pyrethrum-extract.html]Pyrethrum[/url], also known as Dalmatian (or, inaccurately, Persian) insect powder, represents the dried flowers of the daisylike herbaceous perennial Tanacetum (Chrysanthemum) cinerariaefolium (Compositae) growing naturally along the east coast of the Adriatic Sea. It is the source of the economically most important botanical insecticides. Pyrethrum is one of the oldest natural insecticides in use in the world today, and it has one of the best safety records of all insecticides. It is a mixture of several esters, called pyrethrins, which are extracted from flowers belonging to the genus Chrysanthemum. Natural pyrethrins are unstable to light and are therefore unsuitable for residual application, particularly in agriculture. This led to the development of several classes of related synthetic compounds which have a higher stability to light and a high insecticidal activity. They are known as pyrethroids. In general, pyrethroids can be toxicologically divided into two classes on the basis of signs of toxicity: those causing mainly tremor and prostration (T syndrome) and those causing choreoathetosis and salivation (CS syndrome). For both groups, the main biological activity is mediated through the effect on sodium channels along the axon membrane of the nerves, in both insects and mammals. The effect on the sodium-exchange disturbance is fully reversible, the duration of which is different for the two classes of pyrethroids: compounds belonging to the group causing the T syndrome produce a considerably shorter effect on the sodium ‘gate’ openings than those belonging to the CS group. Being highly lipophilic, pyrethroids readily pass through cell membranes and are absorbed into the body by all routes following exposure. However, the ratio of the toxic dose by the oral route to that of intravenous injection is very high; this is because of rapid detoxification, mainly by cleaving of the ester bond by esterases. Present-day evidence indicates that doses of a pyrethroid likely to be encountered both in the workplace and through food consumption would not lead to any serious untoward effects, although reversible transient effects on the skin may be recorded and may be used as a warning response of inadvertent exposure.

 

Spirulina: Are There Health Benefits?


[url=http://www.hjagrifeed.com/natural-veterinary-ingredients/spirulina-powder.html]Spirulina [/url]is a blue-green algae, and is believed to be one of the oldest life forms on Earth. First used by the Aztecs as an endurance-booster, spirulina is considered a superfood — an all-in-one source of nutrients including protein levels comparable to eggs. The Aztecs also used spirulina to treat various diseases, and legends say that the kingdom’s messengers used the algae to sustain their marathon runs. Modern research supports many of the alleged benefits of taking spirulina, and continues to study its potential for treating health concerns. Spirulina has a bitter taste, so people often mix it with yogurts, juices, and smoothies to improve its flavor. Spirulina is commonly available as a supplement at health food stores. Spirulina is a potent source of nutrients. It contains a powerful plant-based protein called phycocyanin. Research shows this may have antioxidant, pain-relief, anti-inflammatory, and brain-protective properties. This antioxidant and other nutrients in spirulina are linked with several health benefits:




Anti-Cancer Properties




Heart Health




Allergy Relief




Immune System Support




May Maintain Eye and Oral Health

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A [url=http://www.asntegeosynthetics.com/geogrid/]geogrid[/url] is a geosynthetic made from a polymeric material. Geogrids are formed by weaving or knitting intersecting ribs with appropriate apertures (open spaces for the ribs to fit into). Primarily, a geogrid is used for reinforcement applications in various types of construction projects but can be used for separation applications as well. They are open grids that allow the soil to strike through the apertures and the tw
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En MonAir disponemos de los vestidos de comunión más excepcionales con unos detalles únicos. En nuestra web podrás ver todos nuestros looksbooks y distintos modelos de vestidos de comunión.
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En DNG Audiovisual nos dedicamos a la venta y al alquiler equipos audiovisuales Madrid. Contamos con material audiovisual de video, sonido y realización audiovisual profesional.

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WHAT IS BLOWN FILM?


[url=http://www.cnebpmmachine.com/blown-film-machine/mono-layer-blown-film-machine/]Blown Film[/url] is a manufacturing process that produce films of plastic sheeting and tubes. These sheets or tubes can either be fully cylindrical, or have other object inserted into them so they form useful objects like shopping bags, rubbish bags or cling wrap. In this article, we will explore what the process of blown film is and how and why you would use it. The process of blown film is reasonably simple. First you must take plastic pellets and heat them to their melting point (like injection moulding). The plastic is then forced through a cylindrical die and forms a thin walled bubble. This bubble is sustained by air, and is fed up through a scaffold where the tube continues to rise. Over this length, the plastic begins to cool. Once it has cooled enough, it is collapsed down on itself, forming a flattened tube. This tube is passed through various rollers and spun onto a spool. The edges of the tube can be trimmed and it can also be punched, cut or printed on before going on the spool. Blown film manufacturing is great for producing products that require uniform properties along the length and width of the product. It’s also a great high volume production method, however it requires massive capital cost to purchase a blown film machine. Blown film can produce up to 130 metres of products in a single minute. The sheets and film they can produce can be as fine as 10-20 microns (0.01mm – 0.02mm) to 250 microns (0.25mm) thick. Most Blown film is either High or Low Density Polyethylene (HDPE or LDPE) but there are exceptions. The downside to blown film is that it can only product sheets or tubes.

 

What makes ABA machine special for bag production?


Technically, in [url=http://www.cnebpmmachine.com/blown-film-machine/aba-blown-film-machine/]ABA type film[/url], the outer and inner layers will be of the same material fed by the same extruder and a middle layer will be of a different material that will be fed by a second extruder. A higher percentage (up to 50-70%) of calcium carbonate compounds or recycled material can be used in the middle layer of the film, thus cutting down the usage of virgin raw material and reducing production cost. This drawing of an ABA die head shows how the middle (B) layer is covered by the (A) inner and (A) outer layers. A high percentage of recycled material is usually put in the middle layer and “sandwiched” by the inner and outer layers using better quality materials. Besides reducing a significant amount of raw material used in the formula, another advantage of the ABA machine is that the 3-layered film that it produces is 30% stronger than the mono-layer film produced by a single extruder. ABA has only two extruders whereas ABC has three extruders. In most bag applications where producers can use the exact same materials in the outer (A) and inner (A) layers, ABA can achieve the same result as ABC (in terms of film strength and material cost reduction) while saving on the machine investment and electricity cost. For products such as industrial film or liner bags in which very less or no recycled materials are used, some producers use ABA machines rather than mono layer machines simply to produce film with higher strength of the same thickness. Here are some features of it:




Cost saving : Virgin material is applied mainly on the outer (thin) layers which is relatively a small percentage of the film composition. These thin layers can cover the middle layer well enough for shiny film surface and good sealing.




Stronger : higher resistance comparing to single layer film products of the same thickness.




Better material mixing : with co-extrusion process to produce better quality film (in which the material is more evenly distributed on the surface), especially when using recycled materials. The effect is very similar to ABC for bag applications.

 

Features of Ab Blown Film Extrusion Machine


This[url=http://www.cnebpmmachine.com/blown-film-machine/ab-blown-film-machine/] AB Film Blowing Machine [/url]is used for blowing the various kinds film of HDPE, LDPE, LLDPE etc, referred as to low density polyethylene (LDPE), high density polyethylene(HDPE)and linear low density polyethylene(LLDPE) etc, which are widely used for printing, agricultural,packing industrial, garments , textile, and making plastic bags, like T-shirt bag, flat bag, and other daily usage bag, etc. The produced film is very flat,reel is high-quality by the use of reversing haul-off units.The film can meet the demand for the high-speed printing. the film producted by this machine is very strong, can use a
as liquid package bag, like milk, joice and so on.1. Blowing film can be used either in tube form (e.g. for plastic bags and sacks) or the tube can be slit to form a sheet. Blown film extrusion can be used for the manufacture of co-extruded, double-layer or multi-layer films for high barrier applications such as food packaging.
2. Industry packaging (e.g. shrinkable film, stretch film, bag film or container liners).
3. Agricultural film (e.g. greenhouse film, crop forcing film, silage film, silage stretch film).
4.Consumer packaging (e.g. packaging film for frozen products, shrinkable film for transport packaging, food wrap film, packaging bags, or form, fill and seal packaging film).
5. Barrier film (e.g. film made of raw materials such as polyamides and EVOH acting as an aroma or oxygen barrier used for packaging food, e. g. cold meats and cheese), films for the packaging of medical products.
6.Laminating film (e.g. laminating of aluminum or paper used for packaging for example milk or coffee).

 

What is the features of ABC Two-layer Co-extrusion Blown Film Machine


The production line of [url=http://www.cnebpmmachine.com/]2-layer co-extrusion blown film machines [/url]can be used for the production of a wide range of general packaging films, and can be used to produce symmetrical film, including liquid packaging film, shrink/stretch film, electrostatic protection film, waterproof film in ponds, heavy packaging film, etc. Forced feeding main machine: All main machines of PLASTAR adopt dual-alloy forced-feeding screws that feature excellent hardness and wear resistance. It can still plasticize a large number of particles under the environment of high speed and high pressure. The service life can reach 3-5 times of ordinary screws.Cone stacking mold: The production line of two-layer co-extrusion blown film machines adopts a two-layer cone stacking mold. We optimize the layout by virtue of thermofluidics and observe the fluid condition with the help of 3D simulation software. We are sure that after a high degree of polishing and coating, each runner has the ability to clean itself under the high pressure and high speed scouring of PLASTAR’s high-speed screws. It will reduce waste in the particle replacement process and shorten the downtime of maintenance. Advanced automation module: The production line of two-layer co-extrusion blown film machines has advanced automation functions, such as centralized feeding, batching, weight control, IBC internal cooling, automatic thickness control, and automatic central winding. All functions are integrated on the touch screen, thus simplifying operations and increasing productivity.

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Custom Vote es una pagina para hacer votaciones online. ¿Quieres saber cómo? Entra en nuestra página web para más información.

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For fodders, there are many kinds of elements indispensible. Dicalcium Phosphate 
 
Dihydrate os also widely used in it.
 
 
    [b]What is [/b][url=http://www.dtech-cn.com/dicalcium-phosphate/][b]Dicalcium 
 
Phosphate[/b][/url][b] Dihydrate (DCPD)?[/b]
 
 
    Dicalcium phosphate dihydrate (DCPD), or CaHPO4·2H2O, is a leavening salt that 
 
transfers into an acid when it contacts water and heat. This allows its reaction 
 
with bases to produce gas in batter-based products, such as cakes or muffins.
 
 
    One of the characteristics of DCPD is its slow rate of reaction. It reacts with 
 
baking soda during the late stages of baking. That’s why it’s known as a heat-
 
triggered leavening acid.
 
 
    [b]Origin[/b]
 
    DCPD is a type of orthophosphate, a single phosphate group with two calcium 
 
atoms and two water molecules. This compound is a very stable acid salt which can be 
 
stored under suboptimal conditions without adverse effects on its leavening 
 
performance.
 
 
    [b]Function[/b]
 
    Incorporation into aqueous systems and hydration is the key to DCPD 
 
functionality in bakery batters. Especially, when heated to temperatures above 150°
 
F (65°C). With these two conditions met, DCPD breaks down into phosphorus-
 
containing acids and tricalcium phosphate. The acids formed then react with the 
 
bicarbonate and produce CO2.
 
 
  And of course, you can never miss vitamin. [url=http://www.dtech-cn.com/vitamin/]
 
Vitamin[/url], any of several organic substances that are necessary in small 
 
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proteins, carbohydrates, and lipids. Although these latter substances also are 
 
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synthesized in amounts sufficient to meet bodily needs and therefore must be 
 
obtained from the diet or from some synthetic source. For this reason, vitamins are 
 
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in that relatively small quantities are needed to complete their functions. In 
 
general these functions are of a catalytic or regulatory nature, facilitating or 
 
controlling vital chemical reactions in the body's cells. If a vitamin is absent 
 
from the diet or is not properly absorbed by the body, a specific deficiency disease 
 
may develop.
 
 
    Vitamins are usually designated by selected letters of the alphabet, as in 
 
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niacin and folic acid. Biochemists traditionally separate them into two groups, the 
 
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    Besides, there are some others have to be mentioned like [url=http://www.dtech-
 
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chloride/]choline chloride[/url], [url=http://www.dtech-cn.com/carotenoid/]
 
carotenoid[/url], [url=http://www.dtech-cn.com/antioxidant/]antioxidant[/url], 
 
[url=http://www.dtech-cn.com/mould-inhibitor/]mould inhibitor[/url], 
 
[url=http://www.dtech-cn.com/feed-enzymes/]feed enzymes[/url] and other 
 
[url=http://www.dtech-cn.com/plant-protein/]plant protein[/url]s.
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A bot can't do what I do 😁
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When wire is rolled up into the form required by the client it is known as a 'coil' but this term, widely used within the steel industry to describe a roll of steel is somewhat ambiguous and can be confusing. Stainless steel is initially produced in slabs, which are then put through a conversion process using a Z mill, which converts the slab into coil prior to further rolling. These wide [url=http://www.avicmr-steel.com/stainless-steel-coil/]stainless steel coil[/url]s includ
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Gaskets are everywhere. They're in your car, at work, even in the air! A gasket is a common term used to describe any seal or grommet that holds two things together. You can make gaskets from rubber, plastic, metal, and other materials. The material choice depends on why you need to use a gasket.


But as you'll learn, there's more to gaskets than a seal preventing a leak. Before you blow a gasket trying to work out the difference between each one, let us do the dirty work for you and tell you everything you need to know about gaskets!


[b]Definition of a Gasket[/b]


A gasket, also known as an O-ring or washer, seals the gap between two surfaces. In most cases, these items are made of rubber and are available in a variety of sizes and shapes depending on their purpose.


The most common type of gasket is the flat gasket. It has a cross-section that is circular in shape. The diameter of cylindrical gaskets ranges from 1/4 inch to 3 inches. Typically, the diameter of cylindrical gaskets is round. The tubular gasket appears as a long tube with a different diameter at each end.


[b]
[/b]


[b]How Are Gaskets Tested?[/b]

 

As part of the process of evaluation, gaskets undergo tests such as hot compression tests. This test determines the heat that the gasket can withstand without causing damage or failure in the gasket material.


It is then necessary to check for any leaks in the sealant, as well as look for any other problems such as pinholes or cracks with the sealant. As the final stage in the manufacturing process, technicians will conduct an examination of the product, checking it for all aspects before it leaves the facility.


[b]Properties of a Gasket[/b]

The gasket material should have good flexibility, low density, and high tensile strength. It should also have a resistance to chemicals and internal pressure, and durability. It must also have excellent adhesion properties with itself and anything it touches. The ideal gasket will not only seal but also protect against corrosion. Further abrasion, vibration, impact, and temperature extremes need consideration.


That said, the most important feature of any gasket application is strength. It must have enough strength to withstand pressure without deforming under normal conditions. This is so it can serve its primary function of creating a tight seal.


Gaskets are the most commonly used in a car, just like our [url=http://www.autopartsxdl.com/honda-gasket/]Honda gasket[/url]. And they are used in various parts such as [url=http://www.autopartsxdl.com/honda-gasket/honda-vtec-solenoid-spool-valve-gasket/]Honda VTEC solenoid spool valve gasket[/url], [url=http://www.autopartsxdl.com/honda-gasket/honda-head-cylinder-solenoid-valve-gasket/]Honda head cylinder solenoid valve gasket[/url], [url=http://www.autopartsxdl.com/honda-gasket/transmission-lock-up-gasket/]transmission lock-up gasket[/url], etc.

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Bathrooms need to have [url=http://www.besllinsanitary.com/faucet/]faucet[/url]s for a decent
functioning. There are lots of kinds of faucets available in many styles, colors, shapes. All the faucets
can be grouped in four categories as per their working mechanisms. They can be grouped in following
categories: Cartridge, Compression, Ball and Disc.


These are in fact parts of faucets that control the water flow from them. Three of these faucets are
mixing faucets while the fourth is not. The compression faucet as the
[url=http://www.besllinsanitary.com/faucet/kitchen-faucet/]kitchen faucet[/url] has two controls: Hot and
Cold.


Compression [url=http://www.besllinsanitary.com/faucet/bathroom-faucet/]bathroom faucet[/url]s have
washers or seals that close against a valve seat to restrict water flow through the faucet body. This
control is turned off when you turn the handle off. The other three types don't use washers for the
off-and-on action, though they do have O-rings and neoprene seals to prevent leaking. They're
referred to as "washerless." Because washers and seals wear out with use-resulting in the
familiar drip, drip-washerless faucets are generally favored.


The fasces you purchase must be synchronized with the architecture of your bathroom. Some faucets
will remind you of old fashioned pumps while others will be quite modern. The two handled faucets are
more stylish then single handle ones.


Single-handle faucets are more practical then two handled ones. When you buy faucet, keep in mind the
spout's height and reach also. You need to choose the sink and this choice will affect your other
purchases. The spout should be long enough to reach into a sink's multiple basins and high enough to
provide ample working room. Buy high arch or gooseneck spouts if you have large pots and shallower sinks.
They will not suit a compact kitchen setting. Pullout sprayhead spouts have grown to be quite popular,
but look for a retractable double-interlock hose that won't kink.


Just like the faucets, the [url=http://www.besllinsanitary.com/handheld-shower/shower-head/]shower
head[/url] has the similar functions. And they are all essential parts for
[url=http://www.besllinsanitary.com/shower-system/]shower system[/url] or
[url=http://www.besllinsanitary.com/shower-system/shower-set/]shower set[/url]. Are you looking for ways
to improve your shower experience by upgrading the shower head? There are a lot of attractive options out
there. Here, you'll learn about the different types of shower heads. Most of the products discussed
here can be installed easily and can dramatically change the quality of your shower as long as you pick
the one that suits you best.


Before we get started, let's start with the basics, the shower head is the piece that the water
comes out of when you turn on the shower. Shower faucets are the shower head plus the valve that controls
the flow of water and its temperature.


Depending on the proportions of your shower or bath and your ceiling height, your options will vary.
Overhead mounting is generally preferable for the true rainshower experience. If an overhead mount is not
available due to a low ceiling, you can still get the rainshower experience as long as you are not too
tall to stand comfortably under a wall-mounted shower head.


Single function and multi-function rain shower heads are available. Single function models may be
best with an overhead mount if the fixture is water pressure,,, beyond your reach. A multi-function rain
shower head will usually include both a top rain shower head element along with a hand-held faucet. That
way you get the best of both worlds! However, do keep in mind that the water pressure will diminish a bit
with a larger shower head and multiple nozzles. If water pressure is something you need for a good shower
experience be sure to discuss this with your remodeler about options for pressurizing your water system.
If your dream is to have a multiple shower head/nozzle shower, make sure to run multiple water lines to
the bathroom so that each can function properly. There are many different types of shower head like
[url=http://www.besllinsanitary.com/handheld-shower/filtered-shower-head/]filtered shower head[/url],
[url=http://www.besllinsanitary.com/overhead-shower/]overhead shower[/url],
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Talleres Autocenter es un taller de mecánica en Móstoles donde ofrecemos todo tipo de reparación: cambio de aceite, de rueda, chapa y pintura...

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You may be familiar with [url=http://www.right-diytools.com/hot-melt-glue-gun/]hot glue[/url] guns from your high school home-economics class. You may remember weird, cylindrical, solid-but-flexible, sticks of translucent glue that you placed into a small hot glue gun. The gun would heat the glue, and you could use the hot glue to adhere pieces of fabric together (or to make other craft projects). Hot glue also has the name of hot melt adhesives, which is the term typically used in industr

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[url=http://www.evergrow-optical.com/single-vision-lens/]Prescription lenses[/url] are the heart of what makes a pair of glasses provide the sharp, clear vision you want to have. There are several types of prescription eyeglasses to address your visual needs, whether you are nearsighted, farsighted or need multiple prescriptions in one lens:


Single Vision – Single vision prescription lenses are used to correct a single vision problem such as nearsightedness, farsightedness, astigmatism. They contain the same amount of vision correction throughout the entire lens. In terms of single vision reading glasses, full frame readers are the most common. You’ll also find single vision lenses in half frame reading glasses which are narrower and sit at the end of your nose for easier up-close and distance viewing.

Multifocal Lenses – People who have more than one vision problem often need eyeglasses with multifocal lenses. Multifocal lenses, such as bifocals and progressive lenses, contain two or more vision-correcting prescriptions.

Bifocal – Bifocals contain two prescriptions within the same lens. The eyeglass lens is split into two sections; the upper part is for distance vision and the lower part for near vision. When you’re looking at someone who is wearing bifocals, you can often see the line between their nearsighted and farsighted prescription.

Progressive – Progressives are multifocal lenses that contain three main fields of vision including near, intermediate and distance. However, progressives do not have a visible line between prescriptions. This gives the wearer a seamless and uninterrupted transition when looking from up-close objects to far-away distance.

Computer Glasses – The lenses of computer glasses are designed to deal with eyestrain caused by computer screens. Computer glasses help with an intermediate distance of around 20 to 26 inches, which is the distance most people sit from their monitor. Many computer glasses have tinted lenses to block out blue light radiating from your electronic devices.

Reading – Even if you don’t have an eyeglass prescription from your eye doctor, you may find yourself needing reading glasses. A valid prescription is not required to purchase reading glasses, though your eye doctor can tell you the magnification you need.


Which Is Better Bifocal or Progressive Lenses?

When you are now thinking about which lenses you should choose. Stay with me because we will break down exactly the pros & cons of progressives and [url=http://www.evergrow-optical.com/bifocal-progressive-lens/]bifocals [/url]for you.


In most cases, progressives are a better choice. Because they provide a continuous clear vision from far to near and in between. Although you need to plan in a little more time to get used to them due to the blurry sides. Progressives also look better because of the missing line. And if you need a strong reading zone they will not have a blurry gap in front of you. But you will learn in the article when each of them would work better.


Usually, bifocals have a bigger reading segment. However, this depends on what kind of segment you choose in your bifocal lenses. There is a variety of them. You can choose between different shapes of the reading segment and different sizes. The standard bifocals come with a shape that has a flat or slightly rounded top and has a semicircle shape in the bottom. The size of it varies between 25-28mm which gives you as a wearer the ability to perform really big eye movements as you read your newspaper.


But bifocals just provide you with only one sharp distance. Compared to bifocals, progressive lenses have a smaller reading zone that gives lets you see two to three articles clearly in your newspaper depending on your prescription. But progressive lenses enable you to have every distance sharp between the distance vision and the near range which bifocals do not. In progressive lenses, you can not really choose the size of the reading zone but you can stretch the transition into the reading zone a bit more to get more out of the middle distance.


On the one hand, really short progressive glasses will have a smaller zone for the middle distance like your laptop and you do not have to look down as much while reading. On the other hand, you get really long progressive lenses to force perform bigger eye movements down to be able to read. But therefore you get a slightly bigger reading zone.


Blue Light: the good and the bad

The [url=http://www.evergrow-optical.com/blue-cut-lens/]light[/url] that reaches and enters the human eye is divided into visible light, comprising wavelengths from 380 to 780 nm, and non-visible light, which includes light in the ultraviolet range (UV light) and the infrared range (IR light).

Experts have been aware for some time that UV light can potentially damage biological tissue, such as our skin and eyes. That is why people typically take precautions to protect themselves from the sun, using items such as sun cream or a pair of sunglasses. However, visible blue-violet light also has the potential to cause damage to our eyes. Although blue-violet light has less energy than ultraviolet light, it is almost entirely unfiltered as it passes through the eye and reaches the retina. By way of contrast, ultraviolet light is almost entirely absorbed by the front part of the eye, and significantly less than 5% of it reaches as far as the retina.

The blue component of light between 380 and 500 nm is also known as high-energy visible (HEV) light. In particular blue-violet wavelengths between 380 and 440 nm are seen as potentially damaging and have been implicated as one of the possible causes of photoretinitis, i.e. damage to the retina caused by high-energy incident light.


Light does more than just help us see, it is also an important means of regulating our biological rhythms and affects our general well-being. Light influences whether or not we are awake, focused and productive and feel energized and healthy.

Scientific studies have confirmed the biological effect of light on our body. Ultraviolet light, for example, influences the production of vitamins. Exposure to bright light and, in particular, the portion of blue light affects our hormonal balance. Hormones in the body regulate how a person feels as well as their sleep-wake cycle. In daylight, the portion of blue light is relatively high, whereas it is significantly reduced in the evening.

When it's bright outside, the body releases serotonin – also known as one of the "happy hormones" – and cortisol, a stress hormone. Both of these make us feel awake and active. However, melatonin is considered a sleep hormone and causes us to feel tired and sleep soundly when it is dark.

Light, in particular blue light that reaches the retina, also affects our psychological well-being. That is why light therapy is successfully employed to treat winter depression and insomnia. But, as is so often the case, the axiom "everything in moderation" still applies. Exposure to too much light also carries certain risks and can even be damaging.


What Are Photochromic lenses?

[url=http://www.evergrow-optical.com/photochromic-lens/]Photochromic lenses[/url] are just like normal lenses but they automatically become dark when we move in the sunlight. Ultraviolet rays coming from the sun affect the molecules present in the photochromic lenses therefore, these lenses change their colors. These lenses get darker in bright lights and vice-versa.

These lenses, therefore, provide the best vision in all lighting conditions. Transition is the best and very well-known brand of photochromic lenses therefore, these lenses are also known as “transition lenses”. The other names also which have been given to these lenses are:

Adaptive lens

Auto tinted lens

Variable tint lens

Photochromic lenses and polarized lenses i.e. sunglasses are very different from each other as the sunglasses have a set tint that protects our eyes from glares but they are not changeable whereas the photochromic lenses easily adapt to the nature of the light present around and changes accordingly.


Helps in reducing eye strain and eye damage by blocking up to 100% harmful UVA/ UVB light.


These glasses are very convenient to carry as you do not need different glasses for different lighting conditions.


These lenses also protect our eyes from the high risk of cataracts by blocking out as much light as possible.


Photochromic lenses are cost-effective. It has the feature of both the lenses (normal lens and sunglasses).


These lenses are available in different shades, tints, and styles suitable for your taste.

Photochromic lenses get darken when coming in contact with the sunlight, blocking your windshields. Therefore, they are risky to wear while driving.


These lenses are also affected by the weather. This means that it takes more time to get dark in the winters.


Some photochromic lenses are not polarized, leading to harsh glares of sunlight. Therefore, make sure you ask the doctor about all the details of the glasses that you wear.


Sunglasses Lens Tints: Which Colour is Right for You?

It’s common for people to pick a lens colour for their [url=http://www.evergrow-optical.com/]sunglasses[/url] purely for the look. But did you know that there is a purpose to each different lens colour? Different sunglasses lens tints will perform at their best during different activities and in different environments. In fact, lens tint can boost depth perception, reduce eye fatigue, and improve vision in a wide range of weather conditions.

So, before you pick your next pair of sunglasses, it’s worth knowing a thing or two about sunglasses lens tints. Matching a tint to your lifestyle will lead to better performance from your sunglasses.


Grey Lenses

Grey lenses are one of the most popular tints. They provide good protection from glare, whether shining from above or from wet roads. Grey tints will provide plenty of protection, whilst offering the purest colour perception of all the lenses. With good performance on sunny and cloudy days, grey is a great all-purpose tint.


Brown Lenses

Brown tints perform most strongly in the sunniest weather. A brown tint will heighten contrast in sunny conditions, allowing you to clearly pick things out from the landscape. This goes hand in hand with improved depth perception over other tints, making them great for any job involving judging distance. However, this tint isn’t recommended for a cloudy, dull day.


Yellow Lenses

Yellow lenses are popular with all kinds of sports people. In foggy, hazy, or low-light conditions yellow tints can provide a strong boost to clarity. This is perfect for sportsmen who need to track moving objects in this kind of weather. But that’s not all, yellow tints can also reduce eye strain from screens. So whether you’re playing cricket or playing a flight simulator, you might want to consider yellow.


Blue Lenses

Blue lenses offer practical protection from UV rays. At the same time, they’re a fashionable colour which is popular at pool-sides everywhere. A blue tint keeps colour perception strong, whilst also helping you pick out outlines. This makes them good for foggy or snowy conditions. Whether you’re hitting ski slopes or sand dunes, blue lenses will look the part.


Pink & Red Lenses

Pink or red tints bring a bold splash of colour to your look, whilst also boosting your vision. An increased depth of field makes these tints popular with both drivers and winter sports fans. By blocking blue light, this rosy tint also reduces eye strain from computers and helps the eyes grapple with changing contrast.


Green Lenses

Green lenses are something of an underdog, offering all-purpose performance in sunny and low light environments. A green tint will greatly reduce glare, whilst keeping colour accuracy. For outdoor use in all kinds of weathers, you can’t top the adaptability of green lenses.


Sunglasses designed to last from Focus on Broadway

Picking the right tint is an important part of putting together the perfect pair of sunglasses. Whether you’re after prescription sunglasses, or looking to treat yourself to some designer frames, Focus on Broadway can help you pick from an amazing range of frames and lenses. To find your next pair of prescription sunglasses, pop in store today.

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