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Chinese Wax
Chinese wax, insect wax ( zh, 蟲蠟), whitewax or pela ( zh, 白蠟) is a white to yellowish-white, gelatinous, crystalline water-insoluble substance obtained from the wax secreted by certain insects. It may be used for the production of candles and polishes, and for the sizing of paper. It resembles spermaceti but is harder, more friable, and with a higher melting point. Production Two scale insects produce the wax: '' Ceroplastes ceriferus'', common in China and India, and the related '' Ericerus pela'', found in China and Japan. These insects deposit their secretions on the branches of certain species of ''Ligustrum'' (privet) tree. The insects and their secretions are harvested and boiled with water to extract the raw wax. The insect bodies, which settle to the bottom, are used as food for swine. A description of the cultivation of the insect for wax production is given in a November 1932 article from the ''Nature Magazine'': The substance scraped off the branches is boile ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crystal
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations. The scientific study of crystals and crystal formation is known as crystallography. The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification. The word ''crystal'' derives from the Ancient Greek word (), meaning both "ice" and " rock crystal", from (), "icy cold, frost". Examples of large crystals include snowflakes, diamonds, and table salt. Most inorganic solids are not crystals but polycrystals, i.e. many microscopic crystals fused together into a single solid. Polycrystals include most metals, rocks, ceramics, and ice. A third cat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Nature Association
American Nature Association, headquartered in Washington, D.C., was the publisher of ''Nature Magazine'' from 1923 to 1959; and a discount reseller of natural science books for its members. It was founded by Arthur Newton Pack and his father, Charles. ''Nature Magazine'' was an "illustrated monthly with popular articles about nature" and later, the "interpreter of the great outdoors." A May 1924 review of the organization and its magazine, written by Mildred Adams Fenton, Carroll Lane Fenton and published in ''American Midland Naturalist'' called the magazine "excellent" with "abundant pictures, admirably printed"; and said it was a "highly worth while publication" that deserves a wide circulation among town and school libraries." ''Natural History (magazine), Natural History'' magazine absorbed ''Nature Magazine'' in January 1960. References External linksCovers from ''Nature Magazine''from MagazineArt.orgOffice Girls: 1925 a 1925 photograph of American Nature Associ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wound
A wound is any disruption of or damage to living tissue, such as skin, mucous membranes, or organs. Wounds can either be the sudden result of direct trauma (mechanical, thermal, chemical), or can develop slowly over time due to underlying disease processes such as diabetes mellitus, venous/arterial insufficiency, or immunologic disease. Wounds can vary greatly in their appearance depending on wound location, injury mechanism, depth of injury, timing of onset ( acute vs chronic), and wound sterility, among other factors. Treatment strategies for wounds will vary based on the classification of the wound, therefore it is essential that wounds be thoroughly evaluated by a healthcare professional for proper management. In normal physiology, all wounds will undergo a series of steps collectively known as the wound healing process, which include hemostasis, inflammation, proliferation, and tissue remodeling. Age, tissue oxygenation, stress, underlying medical conditions, and certain m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ointment
A topical medication is a medication that is applied to a particular place on or in the body. Most often topical medication means application to body surfaces such as the skin or mucous membranes to treat ailments via a large range of classes including creams, foams, gels, lotions, and ointments. Many topical medications are epicutaneous, meaning that they are applied directly to the skin. Topical medications may also be inhalational, such as asthma medications, or applied to the surface of tissues other than the skin, such as eye drops applied to the conjunctiva, or ear drops placed in the ear, or medications applied to the surface of a tooth. The word ''topical'' derives from Greek τοπικός ''topikos'', "of a place". Justification Topical drug delivery is a route of administering drugs via the skin to provide topical therapeutic effects. As skin is one of the largest and most superficial organs in the human body, pharmacists utilise it to deliver various drugs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anxiety
Anxiety is an emotion characterised by an unpleasant state of inner wikt:turmoil, turmoil and includes feelings of dread over Anticipation, anticipated events. Anxiety is different from fear in that fear is defined as the emotional response to a present threat, whereas anxiety is the anticipation of a future one. It is often accompanied by nervous behavior such as pacing back and forth, Somatic anxiety, somatic complaints, and Rumination (psychology), rumination. Anxiety is a feeling of uneasiness and worry, usually generalized and unfocused as an overreaction to a situation that is only subjectively seen as menacing. It is often accompanied by muscular tension, restlessness, Fatigue (medical), fatigue, inability to catch one's breath, tightness in the abdominal region, nausea, and problems in concentration. Anxiety is closely related to fear, which is a response to a real or perceived immediate threat (fight-or-flight response); anxiety involves the expectation of a future t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helminths
Parasitic worms, also known as helminths, are a polyphyletic group of large macroparasites; adults can generally be seen with the naked eye. Many are intestinal worms that are soil-transmitted and infect the gastrointestinal tract. Other parasitic worms such as schistosomes reside in blood vessels. Some parasitic worms, including leeches and monogeneans, are ectoparasites thus, they are not classified as helminths, which are endoparasites. Parasitic worms live in and feed in living hosts. They receive nourishment and protection while disrupting their hosts' ability to absorb nutrients. This can cause weakness and disease in the host, and poses a global health and economic problem. Parasitic worms cannot reproduce entirely within their host's body; they have a life cycle that includes some stages that need to take place outside of the host. Helminths are able to survive in their mammalian hosts for many years due to their ability to manipulate the host's immune respons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hoarseness
A hoarse voice, also known as dysphonia or hoarseness, is when the voice involuntarily sounds breathy, raspy, or strained, or is softer in volume or lower in pitch. A hoarse voice can be associated with a feeling of unease or scratchiness in the throat. Hoarseness is often a symptom of problems in the vocal folds of the larynx. It may be caused by laryngitis, which in turn may be caused by an upper respiratory infection, a cold, or allergies. Cheering at sporting events, speaking loudly in noisy environments, talking for too long without resting one's voice, singing loudly, or speaking with a voice that is too high or too low can also cause temporary hoarseness. A number of other causes for losing one's voice exist, and treatment is generally by resting the voice and treating the underlying cause. If the cause is misuse or overuse of the voice, drinking plenty of water may alleviate the problems. It appears to occur more commonly in females and the elderly. Furthermore, certain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Go (game)
# Go is an abstract strategy game, abstract strategy board game for two players in which the aim is to fence off more territory than the opponent. The game was invented in China more than 2,500 years ago and is believed to be the oldest board game continuously played to the present day. A 2016 survey by the International Go Federation's 75 member nations found that there are over 46 million people worldwide who know how to play Go, and over 20 million current players, the majority of whom live in East Asia. The Game piece (board game), playing pieces are called ''Go equipment#Stones, stones''. One player uses the white stones and the other black stones. The players take turns placing their stones on the vacant intersections (''points'') on the #Boards, board. Once placed, stones may not be moved, but ''captured stones'' are immediately removed from the board. A single stone (or connected group of stones) is ''captured'' when surrounded by the opponent's stones on all Orthogona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hanging Scroll
A hanging scroll is one of the many traditional ways to display and exhibit East Asian painting and calligraphy. They are different from handscrolls, which are narrower and designed to be viewed flat on a table. Hanging scrolls are generally intended to be displayed for short periods of time, after which they are rolled up and tied for storage. They are traditionally rotated according to season or occasion, rather than be on permanent display. Their artwork could be mounted with decorative brocade silk borders. The craft of creating a hanging scroll is considered an art in itself. History Scrolls originated in their earliest form from texts written on Bamboo and wooden slips, bamboo strips and silk banners across ancient China. The earliest hanging scrolls are related to and developed from silk banners in early Chinese history. These banners were long and hung vertically on walls. Such silk banners and hanging scroll paintings were found at Mawangdui dating back to the Han dyna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sizing
Sizing or size is a substance that is applied to, or incorporated into, other materials—especially papers and textiles—to act as a protective filler or glaze. Sizing is used in papermaking and textile manufacturing to change the absorption and wear characteristics of those materials. Sizing is used for oil-based surface preparation for gilding (sometimes called ''mordant'' in this context). It is used by painters and artists to prepare paper and textile surfaces for some art techniques. Sizing is used in photography to increase the sharpness of a print, to change the glossiness of a print, or for other purposes depending on the type of paper and printing technique. Fibers used in composite materials are treated with various sizing agents to promote adhesion with the matrix material. Sizing is used during paper manufacture to reduce the paper's tendency when dry to absorb liquid, with the goal of allowing inks and paints to remain on the surface of the paper and to dry t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chien-Chang
Xichang (Northern Yi: /o̝˨˩dʐo̝˧/) is a city in and the seat of the Liangshan Yi Autonomous Prefecture in the south of Sichuan, China. History The Qiongdu were the local people at the time of contact with China. The county of Qiongdu is attested in the area from the Han dynasty. Under the Song dynasty, a local lord was given the title of "King of the Qiongdu" (''Qiongdu Wang''). The area formed part of the medieval Kingdom of Dali and was subdued by the Mongolians from 1253–56, after which it was incorporated into Yunnan of the Yuan dynasty. It was organized as the Jiandu Ningyuan duhufu, qianhufu, or wanhufu but continued to be often known as Jiandu. In the book of his travels, Marco Polo recorded that the people of Jiandu and its hinterland used no coins but rods of gold bullion reckoned in '. A small change was made using half-catty pieces of molded salt, each reckoned as one-eightieth of a ' of pure gold. Under the Qing, it was officially known as Ningyuan Commande ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swine
Suina (also known as Suiformes) is a suborder of omnivorous, non-ruminant artiodactyl mammals that includes the domestic pig and peccaries. A member of this clade is known as a suine. Suina includes the family Suidae, termed suids, known in English as pigs or swine, as well as the family Tayassuidae, termed tayassuids or peccaries. Suines are largely native to Africa, South America, and Southeast Asia, with the exception of the wild boar, which is additionally native to Europe and Asia and introduced to North America and Australasia, including widespread use in farming of the domestic pig subspecies. Suines range in size from the 55 cm (22 in) long pygmy hog to the 210 cm (83 in) long giant forest hog, and are primarily found in forest, shrubland, and grassland biomes, though some can be found in deserts, wetlands, or coastal regions. Most species do not have population estimates, though approximately two billion domestic pigs are used in farming, while ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
