Door makers often fashion table tops,
cabinet facing and other decorative wood features from veneers, which are thin
slices of wood shaved from tree trunks. Ash -- Fraxinus americana -- is a
hardwood that that grows in Northeastern China, and it makes a utilitarian
light veneer that resembles red oak and is suitable for desks, dressers and
other household items. Slicing ash into a veneer is a way to take the most
advantage of the highly figured grain patterns that appear on some logs.
An important reason for using a veneer
instead of solid wood is that the veneer, once glued to a substrate of particle
Board or plywood, makes a more stable building material than the wood itself.
Whereas wood can crack and warp in conditions of variable temperature and humidity,
a veneer-covered sheet of plywood seldom does. Veneers can display especially
interesting grain features, depending on which part of the log they originate
from, and often make furniture more decorative and ornate. Moreover, because
veneers are bendable, woodworkers can use them to cover curved surfaces.
The blond, open grain of ash is attractive in
itself, but you can stain it any color you like, usually with good results; it
accepts stain evenly and doesn't blotch. You can finish it with oil, polyurethane
or lacquer, and care of the finish is straightforward. Dust it frequently, and,
when washing becomes necessary, use a pH-neutral cleaner, such as an ounce of
dish soap in a gallon of warm water. When the finish turns dull, you can
usually restore the shine with light coat of furniture polish followed by
gentle buffing.
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Volcanic rock is a stone formed by magma after volcanic eruption. The surface of this stone is very rough and full of small holes, rich in minerals and trace elements, is a very precious stone. As a new type of environmental protection energy, volcanic rock has been widely used in various fields of people's life. However, many people have questioned: What are the functions of volcanic rocks? Let's introduce Xiao Bian to the following.
The most widely used place for volcanic rock is in the aquarium field, so let's first look at the role of volcanic rock in the aquarium field:
1. Living water: Putting volcanic stones into water can increase the content of oxygen ions in the water. It can also play a role in disinfecting the aquarium and is conducive to the growth of fish. It can also play a role in preventing diseases. In addition, volcanic rocks can also release trace amounts of infrared rays and a-rays, which are not only beneficial to the growth of fish but also have a good effect on the human body.
2. Stable Water Quality: Putting volcanic rocks into water, it can adjust water with high acidity or alkalinity to near neutrality, and stabilize water quality. Volcanic rocks are rich in minerals and can play a role in improving water quality.
3. Induced color: Some ornamental fishes have characteristics close to the surrounding environment, such as arhats, parrots, and red horses. The color of the volcanic stone is bright and beautiful. Putting together fish such as Lohan can make the color closer to the volcanic rock and become very beautiful.
4. Adsorption: The volcanic rock is adsorbed. He not only can adjust the pH, but also can absorb harmful heavy metal ions and harmful bacteria in the water and play a role in purifying water quality.
5, to promote metabolism: Volcanic rock contains dozens of minerals and trace elements, can play a role in promoting cell metabolism, enhance immunity.
6. Cultivation of Nitrifying Bacteria: The porosity and positive electricity load on the surface of volcanic rock is a hotbed for the cultivation of nitrifying bacteria and microorganisms. Nitrifying bacteria are a kind of aerobic bacteria and can play a role in improving water quality.
Today, the unique properties of volcanic stones are also of great benefit to the human body. Nowadays, there are also volcanic stones used as ornaments. The role of volcanic stones on the human body:
1, radiation protection: volcanic stone with anti-micro-radiation effect. After leaking from Japan nuclear, volcanic rock was widely used as an anti-radiation jewelry. At present, many people's working environment is to avoid computers every day. Even if they return home, there are all kinds of home appliances that have radiation, and there is a volcanic stone jewelry that can help you to effectively mitigate the harm caused by radiation.
2, beauty and beauty: Volcanic stone contains a large energy magnetic field, often wear can promote cell metabolism, open up congestion blood, regulate the digestive system, burn excess fat, play a role in detoxification and physical fitness. Volcanic rocks contain a large amount of trace elements and minerals, often wearing volcanic stone jewelry can play a role in enhancing physical fitness.