Search results
Results from the WOW.Com Content Network
[2] [4] They are commonly known as ivory palms, ivory-nut palms or tagua palms (/ ˈ t ɑː ɡ w ə, ˈ t æ ɡ-/); the scientific name Phytelephas means "plant ivory" or more literally, "plant elephant". This and the first two of the common names refer to the very hard white endosperm of their seeds (tagua nuts or jarina seeds), which ...
This ivory will be occasionally marked synthetic while "French Ivory" or "India Ivory" are common marks. It can be distinguished from natural ivory due to its lighter weight and more even coloring. [5] Cellulose nitrate can be identified with a chemical spot test using diphenylamine. This ivory can degrade and produce acidic and oxidizing nitrogen.
That is why it is important to apply preventive collections care measures wherever possible. The most effective method is to simply prevent pollutants from entering the building itself, this can be done by purchasing air conditioning and filtering methods to filter the air, and properly ventilate the building.
Ivory has been valued since ancient times in art or manufacturing for making a range of items from ivory carvings to false teeth, piano keys, fans, and dominoes. [9] Elephant ivory is the most important source, but ivory from mammoth, walrus, hippopotamus, sperm whale, orca, narwhal and warthog are used as well.
Many plant species have been studied thoroughly for their value as a source of medicine. [ 6 ] [ 7 ] They have a wide range of benefits such as anti-fever and anti-inflammatory properties, can treat diseases such as malaria and diabetes , and are used as vitamins and antibiotic and antifungal medications.
An early use of vegetable ivory, attested from the 1880s, was the manufacture of buttons.The material is called corozo or corosso when used in buttons.Rochester, New York was a center of manufacturing where the buttons were "subjected to a treatment which is secret among the Rochester manufacturers", presumably improving their "beauty and wearing qualities". [5]
The winners of the Nature Photographer of the Year (NPOTY) 2024 competition have been announced! This prestigious event celebrates the very best in nature photography, showcasing stunning work ...
As with any self-climbing façade green, some care is required to make best use of the positive effects: Ivy covering the walls of an old green wall is a familiar and often attractive sight. It has insulating as well as weather protection benefits, [ citation needed ] dries the soil and prevents wet walls, but can be problematic if not managed ...