Search results for keyword: vivi
The main factor affecting the spread is the amount of depression
Influence of Span Width
Span width refers to the measure of the overall width of a structure, whether it be a bridge, building, highway, or any other type of construction. Span width is a very important factor in determining the structural integrity and stability of a given structure, as the grea......
1031 
Avery
BOF method
The Art of Storytelling
Storytelling has been around since the beginning of time. From ancient folk tales, to the stories we hear in our daily lives, stories have the ability to captivate, entertain, and enlighten us. They can also help us to understand difficult concepts and ideas, and explore c......
Rest and Resurrection
Rest and Revival
Life is full of ups and downs that sometimes leave us weary and worn out. Even though you may be feeling run-down, there are ways to rejuvenate and get back to feeling healthy, full of energy and enthusiasm. Taking part in rest and revival activities can help to leave your body a......
The characteristics of the shaping process
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Broad-axe Craft Technology
Broad-axe craft is an ancient technology evolved from primitive society. It has enjoyed a long history and remains an important technology to this day. Broad-axe craft uses an axe to fashion a range of products from wooden materials. The broad-axe is used to shape the ......
Pigment Minerals
Pigments from Mineral Sources
Pigments from mineral sources have been used for thousands of years. Ancient Egyptians used kaolin to make their bright yellow pigments, while the Greeks and Romans used Egyptian blue and cinnabar, respectively. For centuries, these pigments were created by grinding ......
Pyrochlore
Malachite
Malachite is a rich, green stone material used for ornamental and decorative purposes, as well as for jewelry. It is found in various shapes, sizes and colors around the world. It is an important spiritual and mystical stone. Its energetic properties are said to help us to align to our h......
Attapulgite clay
Molding dough and carving stones dates back to the first reportings of art from the Paleolithic Age, roughly 18,000 years ago, when the use of just four rudimentary tools—a point, a drill, an awl, and a scraper—were used to create elaborate stone carvings. As time progressed, man found better an......
black manganese ore
Hematite is a very common mineral, composed of iron oxide, and is an important ore of iron. Its scientific name is ferric oxide and is also sometimes known as black iron ore. Throughout its history, hematite has been used for a number of purposes. Historically, it has been used to make red ochre p......
Spherical ink
History of Ink
Humans have been writing and leaving marks since the beginning of civilization, and the earliest records of ink date back over five thousand years ago. Ancient Sumerians and Egyptians used vines, leaves and bark to create inks for their purposes. The ancient Egyptians were the firs......
Semiconductor materials for light emission
Introduction
Light-emitting diodes (LEDs) are one of the most promising semiconductor materials used for light emission applications in the past decades. LEDs are widely used in consumer electronic products, automotive lighting, display industry, and lighting industry. LEDs are also used for illu......
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