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Air pollution in Malaysia

Air pollution has been an ongoing problem in many countries in the Southeast Asia region, and Malaysia is one of the worst affected. The main cause of this haze is the slash and burn practice by farmers and peat fires blown by the wind from Indon ...

Selective non-catalytic reduction

Selective non-catalytic reduction is a method to lessen nitrogen oxide emissions in conventional power plants that burn biomass, waste and coal. The process involves injecting either ammonia or urea into the firebox of the boiler at a location wh ...

Diethylaluminium cyanide

Diethylaluminum cyanide is the organoaluminum compound with formula 2 AlCN) n. This colorless compound is usually handled as a solution in toluene. It is a reagent for the hydrocyanation of α,β-unsaturated ketones.

Silver cyanide

Silver cyanide is the chemical compound with the formula AgCN. This white solid forms upon treatment of solutions containing Ag + with cyanide. This precipitation step is used in some schemes to recover silver from solution. Silver cyanide is use ...

2-Ethoxyethanol

2-Ethoxyethanol, also known by the trademark Cellosolve or ethyl cellosolve, is a solvent used widely in commercial and industrial applications. It is a clear, colorless, nearly odorless liquid that is miscible with water, ethanol, diethyl ether, ...

2-(2-Ethoxyethoxy)ethanol

2-ethanol, also known under many trade names, is the organic compound with the formula CH 3 CH 2 OCH 2 CH 2 OCH 2 CH 2 OH. It is a colorless liquid. It is a popular solvent for commercial applications. It is produced by the ethoxylation of ethanol.

2-Methoxyethanol

2-Methoxyethanol, or methyl cellosolve, is an organic compound with formula C 3 H 8 O 2 that is used mainly as a solvent. It is a clear, colorless liquid with an ether-like odor. It is in a class of solvents known as glycol ethers which are notab ...

Octaethylene glycol monododecyl ether

Octaethylene glycol monododecyl ether is a nonionic surfactant formed by the ethoxylation of dodecanol to give a material with 8 repeat units of ethylene glycol.

Pentaethylene glycol monododecyl ether

Pentaethylene glycol monododecyl ether is a nonionic surfactant formed by the ethoxylation of dodecanol to give a material with 5 repeat units of ethylene glycol.

Propylene glycol methyl ether acetate

Propylene glycol methyl ether acetate is a P-type glycol ether used in inks, coatings, and cleaners. It is sold by Dow Chemical under the name Dowanol PMA, by Shell Chemical under the name methyl proxitol acetate, and by Eastman under the name PM ...

Acenaphthene

Acenaphthene is a polycyclic aromatic hydrocarbon consisting of naphthalene with an ethylene bridge connecting positions 1 and 8. It is a colourless solid. Coal tar consists of about 0.3% of this compound.

Acenaphthylene

Acenaphthylene is a polycyclic aromatic hydrocarbon. The molecule resembles naphthalene with positions 1 and 8 connected by a C 2 H 2 unit. It is a yellow solid. Unlike many polycyclic aromatic hydrocarbons, it has no fluorescence.

Benzo(c)fluorene

The structure of benzofluorene is depicted in the infobox on the right as well. It is mostly flat, because it consists of 3 aromatic rings. Only the 2 hydrogen atoms on the 5 ring are oriented into the 3D plane.

Benzocyclobutene

Benzocyclobutene is a benzene ring fused to a cyclobutane ring. It has chemical formula C 8 H 8. BCB is frequently used to create photosensitive polymers. BCB-based polymer dielectrics may be spun or applied to various substrates for use in micro ...

Circulene

A circulene is a macrocyclic arene in which a central polygon is completely surrounded and fused by benzenoids. Nomenclature within this class of molecules is based on the number of benzene rings surrounding the core, which is equivalent to the s ...

Cyclacene

Cyclacenes are hoop-like polycyclic compounds where aromatic moieties are fused together to form the ring structures. Because of their interesting electronic and structural properties as well as their potential applications in supramolecular chem ...

Dibenzopyrenes

Dibenzopyrenes are a group of high molecular weight polycyclic aromatic hydrocarbons with the molecular formula C 24 H 14. There are five isomers of dibenzopyrene which differ by the arrangement of aromatic rings: dibenzopyrene. Dibenzopyrenes ha ...

2.6-Dimethylnaphthalene

2.6-Dimethylnaphthalene is a polycyclic aromatic hydrocarbon. It is one of the ten dimethylnaphthalene isomers, which are derived from naphthalene by the addition of two methyl groups. 2.6-DMN is of commercial importance as a starting material fo ...

Helicene

In organic chemistry, helicenes are ortho-condensed polycyclic aromatic compounds in which benzene rings or other aromatics are angularly annulated to give helically-shaped chiral molecules. The chemistry of helicenes has attracted continuing att ...

Kekulene

Kekulene is a polycyclic aromatic hydrocarbon and a circulene with the chemical formula C 48 H 24. It was first synthesized in 1978, and was named in honor of August Kekule, the discoverer of the structure of the benzene molecule.

Phenacene

Phenacenes are a class of organic compounds consisting of fused aromatic rings. They are polycyclic aromatic hydrocarbons, related to acenes and helicenes from which they differ by the arrangement of the fused rings.

Picene

Picene is a hydrocarbon found in the pitchy residue obtained in the distillation of peat tar and of petroleum. This is distilled to dryness and the distillate repeatedly recrystallized from cymene. It may be synthetically prepared by the action o ...

Tricyclobutabenzene

Tricyclobutabenzene is an aromatic hydrocarbon consisting of a benzene core with three cyclobutane rings fused onto it. This compound and related compounds are studied in the laboratory because they are often displaying unusual conformations and ...

Triphenylene

In chemistry, the organic compound triphenylene is a flat polycyclic aromatic hydrocarbon consisting of four fused benzene rings. Triphenylene can be isolated from coal tar. It is also made synthetically by synthesis and trimerization of benzyne. ...

Triptycene

Triptycene is an aromatic hydrocarbon, the simplest iptycene molecule with the formula C 2 H 2 3. It is a white solid that is soluble in organic solvents. The compound has a paddle-wheel configuration with D 3h symmetry. It is named after the med ...

Zethrene

Zethrene is a polycyclic aromatic hydrocarbon consisting of two phenalene units fused together. According to Clars rule, the two exterior naphthalene units are truly aromatic and the two central double bonds are not aromatic at all. For this reas ...

Celestino Vega

Celestino Lester Vega was a cigar maker, President of Centro Español and a promoter of Spanish arts and culture. He is listed as a Great Floridian. Vega was born in Asturias, Spain November 27, 1897. He emigrated to Tampa. He faced labor protests ...

Spalax

The genus Spalax contains the blind, fossorial, or subterranean mole rats, which are one of several types of rodents that are called "mole rats". The hystricognath mole-rats of the family Bathyergidae are completely unrelated, but some other form ...

Golan Heights blind mole-rat

The Golan Heights blind mole-rat is a rodent species in the family Spalacidae. It has been found on the Golan Heights. This species, along with Spalax judaei and, by a different mechanism, Heterocephalus glaber, appears to be immune to cancer.

Judean Mountains blind mole-rat

The Judean Mountains blind mole-rat is an extant species of subterranean rodent within the family Spalacidae, indigenous to central Israel. After determining S. judaei in 2001, Nevo et al. recorded samples in the immediate area around kibbutz Lah ...

Mount Carmel blind mole-rat

The Mount Carmel blind mole-rat is an extant species of subterranean rodent within the family Spalacidae, indigenous to northern Israel. Following the identification of S. carmeli in 2001, Nevo et al. recorded specimens in the vicinity surroundin ...

Upper Galilee Mountains blind mole-rat

The Upper Galilee Mountains blind mole-rat is an extant species of subterranean rodent within the family Spalacidae, indigenous to Upper Galilee in northern Israel. Following the identification of S. galili in 2001, Nevo et al. recorded specimens ...

Talpini

Talpini is a tribe, in the scientific classification system of binomial nomenclature. It encapsulates a group of mammals known as Old World Moles. It is a division of the subfamily Talpinae.

Equivalent teeth shrew mole

The equivalent teeth shrew mole is a species of mammal in the family Talpidae. It is endemic to Sichuan, China. It is characterized by having nine teeth in the row above and nine teeth in the lower row. The data indicate that it is the sister tax ...

Euroscaptor

Euroscaptor is a genus of mammal in the family Talpidae. Members are found in China, Japan and other countries of South and Southeast Asia. It contains the following species as of October 2018: Euroscaptor subanura. Japanese mountain mole Eurosca ...

Kobe mole

The Kobe mole is a species of mammal in the family Talpidae. It is endemic to a number of islands in central and southern Japan. At least one researcher believes M. kobeae and a large mole M. Robusta to be the same species. Further research is ne ...

Mogera

Mogera is a genus of mammals in the family Talpidae. Moles in this genus differ from Old World moles in the genus Talpa in having one fewer pairs of lower incisors and in having larger hind premolars in the lower jaw.

Kano mole

The Kano mole is a species of mole native to Taiwan. The specific name kanoana is derived from Tadao Kano, a Japanese naturalist who made the first record of these animals in 1940s. In 2004, biologists from Japan and Taiwan found a few samples an ...

Neurotrichini

Neurotrichini is a tribe within the subfamily Talpinae of the mole family. It includes the living genus Neurotrichus - with a single living species, the American shrew-mole as well as some fossil species - and the fossil Quyania.

Scalopinae

The Scalopinae, or New World moles, are one of three subfamilies of the family Talpidae, which consists of moles and mole-like animals, the other two subfamilies being the Old World Talpids and the Chinese Shrew-like Moles. The Scalpidae are the ...

Scalopini

The Scalopini are a tribe of moles belonging to the family Talpidae. They include all the New World moles apart from the strikingly distinctive star-nosed mole. As the similarity of the names implies, they are the standard form of the Scalopinae, ...

Scapanus

Scapanus is a genus of moles in the family Talpidae. They live in North America from west of the Rockies south to Baja California del Norte, and north to British Columbia, wherever conditions permit a mole population, that is to say, apart from t ...

Talpinae

The subfamily Talpinae, sometimes called "Old World moles" or "Old World moles and relatives", is one of three subfamilies of the mole family Talpidae, the others being the Scalopinae, or New World moles, and the Uropsilinae, or shrew-like moles. ...

Urotrichini

Urotrichini is a tribe of the mole family, and consists of Japanese and American shrew-moles. They belong to the Old World moles and relatives branch of the mole family. There are only two species, each of which represents its own genus. The name ...

Cerebrovascular disease

Cerebrovascular disease includes a variety of medical conditions that affect the blood vessels of the brain and the cerebral circulation. Arteries supplying oxygen and nutrients to the brain are often damaged or deformed in these disorders. The m ...

Carotid-cavernous fistula

A carotid-cavernous fistula results from an abnormal communication between the arterial and venous systems within the cavernous sinus in the skull. It is a type of arteriovenous fistula. As arterial blood under high pressure enters the cavernous ...

Intracranial aneurysm

Intracranial aneurysm, also known as brain aneurysm, is a cerebrovascular disorder in which weakness in the wall of a cerebral artery or vein causes a localized dilation or ballooning of the blood vessel. Rear circulation aneurysms of the basilar ...

Cerebral atherosclerosis

Cerebral atherosclerosis is a type of atherosclerosis where build-up of plaque in the blood vessels of the brain occurs. Some of the main components of the plaques are connective tissue, extracellular matrix, including collagen, proteoglycans, fi ...

Duret haemorrhages

Duret haemorrhages are small linear areas of bleeding in the midbrain and upper pons of the brainstem. They are caused by a traumatic downward displacement of the brainstem. They are named after Henri Duret.

Hypertensive encephalopathy

Hypertensive encephalopathy is general brain dysfunction due to significantly high blood pressure. Symptoms may include headache, vomiting, trouble with balance, and confusion. Onset is generally sudden. Complications can include seizures, poster ...