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Listeria Monocytogenes
''Listeria monocytogenes'' is the species of pathogenic bacteria that causes the infection listeriosis. It is a facultative anaerobic bacterium, capable of surviving in the presence or absence of oxygen. It can grow and reproduce inside the host's cells and is one of the most virulent foodborne pathogens. Twenty to thirty percent of foodborne listeriosis infections in high-risk individuals may be fatal. In the European Union, listeriosis continues an upward trend that began in 2008, causing 2,161 confirmed cases and 210 reported deaths in 2014, 16% more than in 2013. In the EU, listeriosis mortality rates also are higher than those of other foodborne pathogens. Responsible for an estimated 1,600 illnesses and 260 deaths in the United States annually, listeriosis ranks third in total number of deaths among foodborne bacterial pathogens, with fatality rates exceeding even ''Salmonella'' spp. and ''Clostridium botulinum''. Named for Joseph Lister, ''Listeria monocytogenes'' is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scanning Electron Microscope
A scanning electron microscope (SEM) is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons. The electrons interact with atoms in the sample, producing various signals that contain information about the surface topography and composition. The electron beam is scanned in a raster scan pattern, and the position of the beam is combined with the intensity of the detected signal to produce an image. In the most common SEM mode, secondary electrons emitted by atoms excited by the electron beam are detected using a secondary electron detector ( Everhart–Thornley detector). The number of secondary electrons that can be detected, and thus the signal intensity, depends, among other things, on specimen topography. Some SEMs can achieve resolutions better than 1 nanometer. Specimens are observed in high vacuum in a conventional SEM, or in low vacuum or wet conditions in a variable pressure or environmental SEM, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymerization
In polymer chemistry, polymerization (American English), or polymerisation (British English), is a process of reacting monomer molecules together in a chemical reaction to form polymer chains or three-dimensional networks. There are many forms of polymerization and different systems exist to categorize them. In chemical compounds, polymerization can occur via a variety of reaction mechanisms that vary in complexity due to the functional groups present in the reactants and their inherent steric effects. In more straightforward polymerizations, alkenes form polymers through relatively simple radical reactions; in contrast, reactions involving substitution at a carbonyl group require more complex synthesis due to the way in which reactants polymerize. As alkenes can polymerize in somewhat straightforward radical reactions, they form useful compounds such as polyethylene and polyvinyl chloride (PVC), which are produced in high tonnages each year due to their usefulnes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queso Blanco
White cheese includes a wide variety of cheese types discovered in different regions, sharing the sole common characteristic of their white hue. The specific type of white cheese can vary significantly depending on the geographical location. Names * gebna beda * , jubna bayda – Akkawi, Jibneh Arabieh, Nabulsi cheese * , ''bjalo sirene'' * * – Quark (dairy product), Quark or brined white cheese * , ''lefko tyri'' – any brined white cheese that is not feta * , ''gvina levana'' * – ricotta, mozzarella * , ''belo sirenje'' * – fresh Minas cheese * – telemea * * * – costeño cheese, cuajada (cheese), cuajada, llanero cheese, Oaxaca cheese, panela cheese, queso de mano * * White cheese by region The Americas In Latin America, (Spanish language, Spanish) or (Portuguese language, Portuguese) refers to various white cheeses, with the specific type varying by region. is considered an easy cheese to make, as it requires no careful handling and does not ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feta Cheese
Feta ( ; ) is a Greek brined white cheese made from sheep milk or from a mixture of sheep and goat milk. It is soft, with small or no holes, and no skin. Crumbly with a slightly grainy texture, it is formed into large blocks and aged in brine. Its flavor is tangy and salty, ranging from mild to sharp. Feta is used in salads, such as Greek salad, and in pastries, notably the phyllo-based Greek dishes '' spanakopita'' "spinach pie" and '' tyropita'' "cheese pie". It is often served with olive oil or olives, and sprinkled with aromatic herbs such as oregano. It can also be served cooked (often grilled), as part of a sandwich, in omelettes, and many other dishes. Since 2002, feta has been a protected designation of origin in the European Union (EU). EU legislation and similar legislation in 25 other countries limits the name ''feta'' to cheeses produced in the traditional way in mainland Greece and Lesbos Prefecture, which are made from sheep milk, or from a mixture of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camembert (cheese)
Camembert ( , , ) is a moist, soft, creamy, surface-ripened cow's milk cheese. It was first made in the late 18th century in Camembert, Normandy, in northwest France. It is sometimes compared in look, taste and texture to brie cheese, albeit with a slightly lower butterfat content than brie's typical 20% – 25% by weight. Production The first camembert was made from unpasteurized milk, and the AOC variety "Camembert de Normandie" (approximately 10% of the production) is required by law to be made only with unpasteurized milk. Many modern cheesemakers outside of Normandy, France, however, use pasteurized milk for reasons of safety, compliance with regulations, or convenience. The cheese is made by inoculating warmed cow milk with mesophilic bacteria, then adding rennet and allowing the mixture to coagulate. The curd is then cut into roughly 1 cm (1/2 inch) cubes, salted, and transferred to low cylindrical camembert molds. The molds are turned every six to twelve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brie Cheese
Brie ( ; ) is a soft cow's-milk cheese named after Brie (itself from Gaulish ''briga'', "hill, height"), the French region from which it originated (roughly corresponding to the modern of Seine-et-Marne). It is pale in colour with a slight greyish tinge under a rind of white mould. The rind is typically eaten, with its flavour depending largely upon the ingredients used and its manufacturing environment. It is similar to Camembert, which is native to a different region of France. Brie typically contains between 60% and 75% butterfat, slightly higher than Camembert. "Brie" is a style of cheese, and is not in itself a protected name, although some regional bries are protected. Some of the flavour notes that are commonly found when eating Brie are: creamy, nutty, mushroom-like, and slightly-acidic. Production Brie may be produced from whole or semi-skimmed milk. The curd is obtained by adding rennet to raw milk and warming it to a maximum temperature of . The cheese is th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meningitis
Meningitis is acute or chronic inflammation of the protective membranes covering the brain and spinal cord, collectively called the meninges. The most common symptoms are fever, intense headache, vomiting and neck stiffness and occasionally photophobia. Other symptoms include confusion or altered consciousness, nausea, and an inability to tolerate loud noises. Young children often exhibit only nonspecific symptoms, such as irritability, drowsiness, or poor feeding. A non-blanching rash (a rash that does not fade when a glass is rolled over it) may also be present. The inflammation may be caused by infection with viruses, bacteria, fungi or parasites. Non-infectious causes include malignancy (cancer), subarachnoid hemorrhage, chronic inflammatory disease ( sarcoidosis) and certain drugs. Meningitis can be life-threatening because of the inflammation's proximity to the brain and spinal cord; therefore, the condition is classified as a medical emergency. A lumba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pathogenicity
In biology, a pathogen (, "suffering", "passion" and , "producer of"), in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. The term ''pathogen'' came into use in the 1880s. Typically, the term ''pathogen'' is used to describe an ''infectious'' microorganism or agent, such as a virus, bacterium, protozoan, prion, viroid, or fungus. Small animals, such as helminths and insects, can also cause or transmit disease. However, these animals are usually referred to as parasites rather than pathogens. The scientific study of microscopic organisms, including microscopic pathogenic organisms, is called microbiology, while parasitology refers to the scientific study of parasites and the organisms that host them. There are several pathways through which pathogens can invade a host. The principal pathways have different episodic time frames, but soil has the longest or most persis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Listeriosis In Animals
Listeriosis is an infectious disease, infectious but not contagious disease caused by the bacterium ''Listeria monocytogenes'', far more common in domestic animals (domestic mammals and poultry), especially ruminants, than in listeriosis, human beings. It can also occur in feral animals—among others, game animals—as well as in poultry and other birds. Aetiology The causative bacterium lives in the soil and in poorly made silage (In Iceland, the disease is called "silage sickness".) Epidemiology The portal of infection is uncertain, but ingestion of infected feed seems the most usual way. However, inhalation and conjunctival contamination might also play a role. The disease is not contagious. The disease is sporadic, but can occur as farm outbreaks in ruminants. Listeriosis in farm animals is important economically in Europe, North America, Australia and New Zealand. It is less common in tropical and subtropical areas. However, use of silage in those countries, most comm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruminant
Ruminants are herbivorous grazing or browsing artiodactyls belonging to the suborder Ruminantia that are able to acquire nutrients from plant-based food by fermenting it in a specialized stomach prior to digestion, principally through microbial actions. The process, which takes place in the front part of the digestive system and therefore is called foregut fermentation, typically requires the fermented ingesta (known as cud) to be regurgitated and chewed again. The process of rechewing the cud to further break down plant matter and stimulate digestion is called rumination. The word "ruminant" comes from the Latin ''ruminare'', which means "to chew over again". The roughly 200 species of ruminants include both domestic and wild species. Ruminating mammals include cattle, all domesticated and wild bovines, goats, sheep, giraffes, deer, gazelles, and antelopes.Fowler, M.E. (2010).Medicine and Surgery of Camelids, Ames, Iowa: Wiley-Blackwell. Chapter 1 General Biology and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meningoencephalitis
Meningoencephalitis (; from ; ; and the medical suffix ''-itis'', "inflammation"), also known as herpes meningoencephalitis, is a medical condition that simultaneously resembles both meningitis, which is an infection or inflammation of the meninges, and encephalitis, which is an infection or inflammation of the brain tissue. Signs and symptoms Signs of meningoencephalitis include unusual behavior, personality changes, nausea, and thinking problems. Symptoms may include headache, fever, pain in neck movement, light sensitivity, and seizure. Causes The organisms which cause meningoencephalitis include bacterial pathogens, protozoans, and viruses. Bacterial Veterinarians have observed meningoencephalitis in animals infected with listeriosis, caused by the pathogenic bacteria '' L. monocytogenes''. Meningitis and encephalitis already present in the brain or spinal cord of an animal may form simultaneously into meningeoencephalitis. The bacteria commonly targets the sensiti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Veterinarian
A veterinarian (vet) or veterinary surgeon is a medical professional who practices veterinary medicine. They manage a wide range of health conditions and injuries in non-human animals. Along with this, veterinarians also play a role in animal reproduction, health management, Animal Conservation, conservation, husbandry and breeding and preventive medicine like animal nutrition, nutrition, vaccination and parasitic control as well as biosecurity and zoonotic disease surveillance and prevention. Description In many countries, the local nomenclature for a veterinarian is a regulated and protected term, meaning that members of the public without the prerequisite qualifications and/or license are not able to use the title. This title is selective in order to produce the most knowledgeable veterinarians that pass these qualifications. In many cases, the activities that may be undertaken by a veterinarian (such as treatment of illness or surgery in animals) are restricted only to thos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
