What is a deodorizer?

Tuesday, July 29, 2014

   A deodorizer is a substance that eliminates, changes, or masks unpleasant odors. Deodorizers are used in the home to overcome household smells, such as those caused by cooking and smoking. They are also used in industry to overcome the odors caused by certain manufacturing processes. Deodorizers for personal use are called deodorants. Deodorizers are often supplied in aerosol cans.

   Antiseptics and Disinfectants. Some deodorizers are antiseptics and disinfectants that eliminate odors by destroying the microorganisms that cause them. Some of the best-known antiseptics and disinfectants are chlorine, hydrogen peroxide, and iodine.

   Masking Deodorizers. Some masking deodorizers cover bad odors with strong pleasant odors. Perfumes and incense are examples of such deodorizers. Other masking deodorizers neutralize or change the unpleasant odors, and they can be used only when the molecular composition of the unpleasant odor is known.

   Adsorbent Deodorizers. An adsorbent deodorizer is a porous solid that removes odorous molecules from air that passes over it by gathering the molecules on its surface. The best-known adsorbent deodorizer is activated charcoal. Other adsorbent deodorizers are silica gel and fuller's earth, a claylike material.

   Solvent Deodorizers. Solvent deodorizers are liquids that dissolve or emulsify odor-causing molecules. Many solvent deodorizers are sprayed into the air to remove odorus molecules in this way. In the industrial deodorizing process called washing, or scrubbing, odorous air is passed through a spray or is bubbled through a con-tainer of water, oil, or some other solvent deodorizer.

Depilatory cream

   Depilatory is a cosmetic cream or lotion that is used to remove unwanted hair. Chemical agents used as depilatories dissolve the hair above the skin but do not affect the hair root or prevent regrowth. These agents are caustic and often are poisonous. Great care should always be taken in their application because they may damage or irritate the skin. Unwanted hair can be permanently removed by electrolysis. A weak electric current is passed through a fine needle, which is inserted into the hair canal. The current kills the hair follicle, and regrowth does not occur.

André Derain

Friday, July 11, 2014

   André Derain was a French painter. Born Chatou, France, June 10, 1880. Died Garches, France, Sept. 10, 1954.
   Derain was one of the leaders of Fauvism, a movement in modern art which emphasized brilliant colors and bold designs. He is especially famous for his landscapes, portraits, and still lifes. Derain was also an outstanding book illustrator and ballet designer. His important canvases include a portrait of Henri Matisse (Philadelphia Museum of Art) and The Farmhouse of Provence.
   Paintings by Derain, along with those by Matisse and others, were shown in the Fauve exhibition of 1905, which caused a sensation in the art world. Derain's later works, painted after World War I, are considered less important than his Fauvist canvases.

What is a depressant?

A depressant is a drug that reduces the activity of various body functions. Some depressants such as anesthetics, sedatives, antiepileptics, narcotics analgesics, and some muscle relaxants, slow nervous and muscular activity by acting on the central nervous system. Tranquilizers are depressants that affect only part of the nervous system. They induce relaxation without causing total depression.

Facts about birthstones

Facts about birthstones
Did you know? The current assignation of stones to months was established in 1912