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Insecticide-treated Mosquito Net
A mosquito net is a type of meshed curtain that is circumferentially draped over a bed or a sleeping area, to offer the sleeper barrier protection against bites and stings from mosquitos, flies, and other pest insects, and thus against the diseases they may carry. Examples of such preventable insect-borne diseases include malaria, dengue fever, yellow fever, zika virus, Chagas disease and various forms of encephalitis, including the West Nile virus. To be effective the mesh of a mosquito net must be fine enough to exclude such insects without obscuring visibility or ventilation to unacceptable levels. It is possible to increase the effectiveness of a mosquito net greatly by pretreating it with an appropriate insecticide or insect repellent. Research has shown mosquito nets to be an extremely effective method of malaria prevention, averting approximately 663 million cases of malaria over the period 2000–2015. History Mosquito netting is mainly used for the protection ag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mosquito Netting
Mosquitoes (or mosquitos) are members of a group of almost 3,600 species of small flies within the family Culicidae (from the Latin ''culex'' meaning "gnat"). The word "mosquito" (formed by ''mosca'' and diminutive ''-ito'') is Spanish for "little fly". Mosquitoes have a slender segmented body, one pair of wings, one pair of halteres, three pairs of long hair-like legs, and elongated mouthparts. The mosquito life cycle consists of egg, larva, pupa, and adult stages. Eggs are laid on the water surface; they hatch into motile larvae that feed on aquatic algae and organic material. These larvae are important food sources for many freshwater animals, such as dragonfly nymphs, many fish, and some birds such as ducks. The adult females of most species have tube-like mouthparts (called a proboscis) that can pierce the skin of a host and feed on blood, which contains protein and iron needed to produce eggs. Thousands of mosquito species feed on the blood of various hosts — ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insecticide
Insecticides are substances used to kill insects. They include ovicides and larvicides used against insect eggs and larvae, respectively. Insecticides are used in agriculture, medicine, industry and by consumers. Insecticides are claimed to be a major factor behind the increase in the 20th-century's agricultural productivity. Nearly all insecticides have the potential to significantly alter ecosystems; many are toxic to humans and/or animals; some become concentrated as they spread along the food chain. Insecticides can be classified into two major groups: systemic insecticides, which have residual or long term activity; and contact insecticides, which have no residual activity. The mode of action describes how the pesticide kills or inactivates a pest. It provides another way of classifying insecticides. Mode of action can be important in understanding whether an insecticide will be toxic to unrelated species, such as fish, birds and mammals. Insecticides may be repellent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyethylene
Polyethylene or polythene (abbreviated PE; IUPAC name polyethene or poly(methylene)) is the most commonly produced plastic. It is a polymer, primarily used for packaging ( plastic bags, plastic films, geomembranes and containers including bottles, etc.). , over 100 million tonnes of polyethylene resins are being produced annually, accounting for 34% of the total plastics market. Many kinds of polyethylene are known, with most having the chemical formula (C2H4)''n''. PE is usually a mixture of similar polymers of ethylene, with various values of ''n''. It can be ''low-density'' or ''high-density'': low-density polyethylene is extruded using high pressure () and high temperature (), while high-density polyethylene is extruded using low pressure () and low temperature (). Polyethylene is usually thermoplastic, but it can be modified to become thermosetting instead, for example, in cross-linked polyethylene. History Polyethylene was first synthesized by the German chemist Hans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cotton
Cotton is a soft, fluffy staple fiber that grows in a boll, or protective case, around the seeds of the cotton plants of the genus ''Gossypium'' in the mallow family Malvaceae. The fiber is almost pure cellulose, and can contain minor percentages of waxes, fats, pectins, and water. Under natural conditions, the cotton bolls will increase the dispersal of the seeds. The plant is a shrub native to tropical and subtropical regions around the world, including the Americas, Africa, Egypt and India. The greatest diversity of wild cotton species is found in Mexico, followed by Australia and Africa. Cotton was independently domesticated in the Old and New Worlds. The fiber is most often spun into yarn or thread and used to make a soft, breathable, and durable textile. The use of cotton for fabric is known to date to prehistoric times; fragments of cotton fabric dated to the fifth millennium BC have been found in the Indus Valley civilization, as well as fabric remnants dated back ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suez Canal
The Suez Canal ( arz, قَنَاةُ ٱلسُّوَيْسِ, ') is an artificial sea-level waterway in Egypt, connecting the Mediterranean Sea to the Red Sea through the Isthmus of Suez and dividing Africa and Asia. The long canal is a popular trade route between Europe and Asia. In 1858, Ferdinand de Lesseps formed the Suez Canal Company for the express purpose of building the canal. Construction of the canal lasted from 1859 to 1869. The canal officially opened on 17 November 1869. It offers vessels a direct route between the North Atlantic and northern Indian oceans via the Mediterranean Sea and the Red Sea, avoiding the South Atlantic and southern Indian oceans and reducing the journey distance from the Arabian Sea to London by approximately , or 10 days at to 8 days at . The canal extends from the northern terminus of Port Said to the southern terminus of Port Tewfik at the city of Suez. In 2021, more than 20,600 vessels traversed the canal (an average of 56 per day). T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pharaoh
Pharaoh (, ; Egyptian: ''pr ꜥꜣ''; cop, , Pǝrro; Biblical Hebrew: ''Parʿō'') is the vernacular term often used by modern authors for the kings of ancient Egypt who ruled as monarchs from the First Dynasty (c. 3150 BC) until the annexation of Egypt by the Roman Empire in 30 BC. However, regardless of gender, "king" was the term used most frequently by the ancient Egyptians for their monarchs through the middle of the Eighteenth Dynasty during the New Kingdom. The term "pharaoh" was not used contemporaneously for a ruler until a possible reference to Merneptah, c. 1210 BC during the Nineteenth Dynasty, nor consistently used until the decline and instability that began with the Twenty-Fifth Dynasty. In the early dynasties, ancient Egyptian kings had as many as three titles: the Horus, the Sedge and Bee ( ''nswt-bjtj''), and the Two Ladies or Nebty ( ''nbtj'') name. The Golden Horus and the nomen and prenomen titles were added later. In Egyptian society, religio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cleopatra VII
Cleopatra VII Philopator ( grc-gre, Κλεοπάτρα Φιλοπάτωρ}, "Cleopatra the father-beloved"; 69 BC10 August 30 BC) was Queen of the Ptolemaic Kingdom of Egypt from 51 to 30 BC, and its last active ruler.She was also a diplomat, naval commander, linguist, and medical author; see and . A member of the Ptolemaic dynasty, she was a descendant of its founder Ptolemy I Soter, a Macedonian Greek general and companion of Alexander the Great. writes about Ptolemy I Soter: "The Ptolemaic dynasty, of which Cleopatra was the last representative, was founded at the end of the fourth century BC. The Ptolemies were not of Egyptian extraction, but stemmed from Ptolemy Soter, a Macedonian Greek in the entourage of Alexander the Great."For additional sources that describe the Ptolemaic dynasty as " Macedonian Greek", please see , , , and . Alternatively, describes them as a "Macedonian, Greek-speaking" dynasty. Other sources such as and describe the Ptolemies as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telugu Language
Telugu (; , ) is a Dravidian language spoken by Telugu people predominantly living in the Indian states of Andhra Pradesh and Telangana, where it is also the official language. It is the most widely spoken member of the Dravidian language family and one of the twenty-two scheduled languages of the Republic of India. It is one of the few languages that has primary official status in more than one Indian state, alongside Hindi and Bengali. Telugu is one of six languages designated as a classical language (of India) by the Government of India. Telugu is also a linguistic minority in the states of Karnataka, Tamil Nadu, Maharashtra, Gujarat, Chhattisgarh, Orissa, West Bengal, and the union territories of Puducherry and Andaman and Nicobar Islands. It is also spoken by members of the Telugu diaspora spread across countries like United States, Australia, United Kingdom, Canada, New Zealand in the Anglosphere; Myanmar, Malaysia, South Africa, Mauritius; and the Arabian Gulf count ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telugu People
Telugu people ( te, తెలుగువారు, Teluguvāru), or Telugus, or Telugu vaaru, are the largest of the four major Dravidian ethnolinguistic groups in terms of population. Telugus are native to the Indian states of Andhra Pradesh, Telangana and the Yanam district of Puducherry. A significant number of Telugus also reside in the surrounding Indian states of Karnataka, Tamil Nadu, Maharashtra, Gujarat, West Bengal, Chhattisgarh, Kerala, and Odisha, as well in the union territory of Andaman and Nicobar Islands. Telugus claim descent from the Andhras, from whom the Telugus inherit their ethnonym. Telugu is the fourth most spoken language in India and the 15th most spoken language in the world. Andhra was mentioned in the Sanskrit epics such as Aitareya Brahmana (by some estimates c. 800 BCE). According to Aitareya Brahmana of the Rigveda, the Andhras left North India from the banks of river Yamuna and migrated to South India. They are mentioned at the time of the d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annamayya
Tallapaka Annamacharya (Telugu : తాళ్ళపాక అన్నమాచార్య) (IAST: taḷḷapāka annamācārya; 22 May 1408 – 4 April 1503), also popularly known as Annamayya, was a 15th-century Hindu saint and the earliest known Indian musician to compose songs called ''sankirtanas'' in praise of the Venkateswara, a form of Vishnu. The musical form of the keertana songs that he composed, which are still popular among Carnatic music concert artists, have strongly influenced the structure of Carnatic music compositions. Jackson (1999), p. 216. Annamacharya is remembered for his saintly life, and is honoured as a great devotee of Vishnu by devotees and saintly singers. Jackson (1999), p. 265. He is believed to have been the avatar of Nandaka, the sword of Vishnu. He is widely regarded as the Andhra Pada kavitā Pitāmaha (Grandfather of Telugu song-writing). Personal life Tallapaka Annamacharya was born on Vaishakha Shuddha Pournami in the year Sarwadha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sir Ronald Ross
Sir Ronald Ross (13 May 1857 – 16 September 1932) was a British medical doctor who received the Nobel Prize for Physiology or Medicine in 1902 for his work on the transmission of malaria, becoming the first British Nobel laureate, and the first born outside Europe. His discovery of the malarial parasite in the gastrointestinal tract of a mosquito in 1897 proved that malaria was transmitted by mosquitoes, and laid the foundation for the method of combating the disease. Ross was a polymath, writing a number of poems, published several novels, and composed songs. He was also an amateur artist and mathematician. He worked in the Indian Medical Service for 25 years. It was during his service that he made the groundbreaking medical discovery. After resigning from his service in India, he joined the faculty of Liverpool School of Tropical Medicine, and continued as Professor and Chairman of Tropical Medicine of the institute for 10 years. In 1926, he became Director-in-Chief of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
