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Andrew Spielman
Andrew Spielman (24 February 1930 – 20 December 2006) was a prominent American public health entomologist and Professor of Tropical Public Health in the Department of Immunology and Infectious Disease at the Harvard School of Public Health (HSPH). Spielman was a world-renowned expert in the vector-borne illnesses malaria, Lyme disease, babesiosis and in the ways in which they are transmitted by mosquitoes and ticks. He was a major figure in the modern history of public health entomology. Biography Early life, education and military service Spielman earned a B.S. from Colorado College and an Sc. D. in the malaria lab at Johns Hopkins University in 1952, serving thereafter as a public health entomologist in the U.S. Navy (he left the service as a lieutenant commander). Career Spielman became a member of the faculty at HSPH in 1959, where he divided his time between the lab and the field. After George Healy, a researcher at the Centers for Disease Control, helped diagnose a se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nantucket
Nantucket () is an island about south from Cape Cod. Together with the small islands of Tuckernuck and Muskeget, it constitutes the Town and County of Nantucket, a combined county/town government that is part of the U.S. state of Massachusetts. It is the only such consolidated town-county in Massachusetts. As of the 2020 census, the population was 14,255, making it the least populated county in Massachusetts. Part of the town is designated the Nantucket CDP, or census-designated place. The region of Surfside on Nantucket is the southernmost settlement in Massachusetts. The name "Nantucket" is adapted from similar Algonquian names for the island, but is very similar to the endonym of the native Nehantucket tribe that occupied the region at the time of European settlement. Nantucket is a tourist destination and summer colony. Due to tourists and seasonal residents, the population of the island increases to at least 50,000 during the summer months. The average sale price f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthropod
Arthropods (, (gen. ποδός)) are invertebrate animals with an exoskeleton, a Segmentation (biology), segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and Arthropod cuticle, cuticle made of chitin, often Mineralization (biology), mineralised with calcium carbonate. The arthropod body plan consists of segments, each with a pair of appendages. Arthropods are bilaterally symmetrical and their body possesses an exoskeleton, external skeleton. In order to keep growing, they must go through stages of moulting, a process by which they shed their exoskeleton to reveal a new one. Some species have wings. They are an extremely diverse group, with up to 10 million species. The haemocoel, an arthropod's internal cavity, through which its haemolymph – analogue of blood – circulates, accommodates its interior Organ (anatomy), organs; it has an open circulatory system. Like their exteriors, the internal or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spelunking
Caving – also known as spelunking in the United States and Canada and potholing in the United Kingdom and Ireland – is the recreational pastime of exploring wild cave systems (as distinguished from show caves). In contrast, speleology is the scientific study of caves and the cave environment.Caving in New Zealand (from Te Ara: The Encyclopedia of New Zealand, Accessed 2012-11.) The challenges involved in caving vary according to the cave being visited; in addition to the total absence of light beyond the entrance, negotiating pitches, squeezes, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Postdoctoral
A postdoctoral fellow, postdoctoral researcher, or simply postdoc, is a person professionally conducting research after the completion of their doctoral studies (typically a PhD). The ultimate goal of a postdoctoral research position is to pursue additional research, training, or teaching in order to have better skills to pursue a career in academia, research, or any other field. Postdocs often, but not always, have a temporary academic appointment, sometimes in preparation for an academic faculty position. They continue their studies or carry out research and further increase expertise in a specialist subject, including integrating a team and acquiring novel skills and research methods. Postdoctoral research is often considered essential while advancing the scholarly mission of the host institution; it is expected to produce relevant publications in peer-reviewed academic journals or conferences. In some countries, postdoctoral research may lead to further formal qualificati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard Kennedy School
The Harvard Kennedy School (HKS), officially the John F. Kennedy School of Government, is the school of public policy and government of Harvard University in Cambridge, Massachusetts. The school offers master's degrees in public policy, public administration, and international development, four doctoral degrees, and many executive education programs. It conducts research in subjects relating to politics, government, international affairs, and economics. As of 2021, HKS had an endowment of $1.7 billion. The School is a member of the Association of Professional Schools of International Affairs (APSIA), a global consortium of schools that trains leaders in international affairs. The School's primary campus is located on John F. Kennedy Street in Cambridge. The main buildings overlook the Charles River and are southwest of Harvard Yard and Harvard Square, on the site of a former MBTA Red Line trainyard. The School is adjacent to the public riverfront John F. Kennedy Memorial Park ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emerging Infectious Diseases
''Emerging Infectious Diseases'' (EID) is an open-access, peer-reviewed journal published by the Centers for Disease Control and Prevention (CDC). EID is a public domain journal and covers global instances of new and reemerging infectious diseases, putting greater emphasis on disease emergence, prevention, control, and elimination. According to Journal Citation Reports, the journal's 2016 impact factor is 6.99, ranking it 4th out of 82 journals in the infectious disease category. The journal also has a 2016 Google Scholar h5-index score of 79, ranking it 2nd in both the epidemiology category and among open-access epidemiological journals, as well as 4th in the communicable diseases category and 1st among open-access communicable disease journals. Abstracting and Indexing The journal is indexed in PubMed, MEDLINE, Web of Science: Science Citation Index Expanded, and Scopus. The journal has a 2021 impact factor The impact factor (IF) or journal impact factor (JIF) of an aca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White-footed Mouse
The white-footed mouse (''Peromyscus leucopus'') is a rodent native to North America from Ontario, Quebec, Labrador, and the Maritime Provinces (excluding the island of Newfoundland) to the southwestern United States and Mexico. In the Maritimes, its only location is a disjunct population in southern Nova Scotia. It is also known as the woodmouse, particularly in Texas. Description Adults are in length, not counting the tail, which can add another . A young adult weighs . While their maximum lifespan is 96 months, the mean life expectancy for the species is 45.5 months for females and 47.5 for males. In northern climates, the average life expectancy is 12–24 months. The species is similar to ''Peromyscus maniculatus''. White-footed Mouse, Quetico.jpg, In Quetico Provincial Park, Ontario File:Rhus typhina-Peromyscus leucopus-female.jpg, Female on a staghorn sumac Behavior and diet White-footed mice are omnivorous, and eat seeds and insects. They are timid and generally avoid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dog Tick
''Dermacentor variabilis'', also known as the American dog tick or wood tick, is a species of tick that is known to carry bacteria responsible for several diseases in humans, including Rocky Mountain spotted fever and tularemia (''Francisella tularensis''). It is one of the best-known hard ticks. Diseases are spread when it sucks blood from the host. It may take several days for the host to experience symptoms. Though ''D. variabilis'' may be exposed to ''Borrelia burgdorferi'', the causative agent of Lyme disease, these ticks are not competent vectors for the transmission of this disease. The primary vectors for ''B. burgdorferi'' are the deer ticks ''Ixodes scapularis'' in eastern parts of the United States, ''Ixodes pacificus'' in California and Oregon, and ''Ixodes ricinus'' in Europe. ''D. variabilis'' may also carry ''Anaplasma phagocytophilum'', the causative agent of human granulocytic anaplasmosis, and ''Ehrlichia chaffeensis'', the causative agent of human monocytic eh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ixodes Dammini
''Ixodes scapularis'' is commonly known as the deer tick or black-legged tick (although some people reserve the latter term for ''Ixodes pacificus'', which is found on the west coast of the US), and in some parts of the US as the bear tick. It was also named ''Ixodes dammini'' until it was shown to be the same species in 1993. It is a hard-bodied tick found in the eastern and northern Midwest of the United States as well as in southeastern Canada. It is a vector for several diseases of animals, including humans (Lyme disease, babesiosis, anaplasmosis, Powassan virus disease, etc.) and is known as the deer tick owing to its habit of parasitizing the white-tailed deer. It is also known to parasitize mice, lizards, migratory birds, etc. especially while the tick is in the larval or nymphal stage. Description The image shown here—and in fact, most images of ''Ixodes scapularis'' that are commonly available—show an adult female that is unengorged, that is, an adult female that h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protozoan
Protozoa (singular: protozoan or protozoon; alternative plural: protozoans) are a group of single-celled eukaryotes, either free-living or parasitic, that feed on organic matter such as other microorganisms or organic tissues and debris. Historically, protozoans were regarded as "one-celled animals", because they often possess animal-like behaviours, such as motility and predation, and lack a cell wall, as found in plants and many algae. When first introduced by Georg Goldfuss (originally spelled Goldfuß) in 1818, the taxon Protozoa was erected as a class within the Animalia, with the word 'protozoa' meaning "first animals". In later classification schemes it was elevated to a variety of higher ranks, including phylum, subkingdom and kingdom, and sometimes included within Protoctista or Protista. The approach of classifying Protozoa within the context of Animalia was widespread in the 19th and early 20th century, but not universal. By the 1970s, it became usual to require th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hamster
Hamsters are rodents (order Rodentia) belonging to the subfamily Cricetinae, which contains 19 species classified in seven genera.Fox, Sue. 2006. ''Hamsters''. T.F.H. Publications Inc. They have become established as popular small pets. The best-known species of hamster is the golden or Syrian hamster (''Mesocricetus auratus''), which is the type most commonly kept as pets. Other hamster species commonly kept as pets are the three species of dwarf hamster, Campbell's dwarf hamster (''Phodopus campbelli''), the winter white dwarf hamster (''Phodopus sungorus'') and the Roborovski hamster (''Phodopus roborovskii''). Hamsters are more crepuscular than nocturnal and, in the wild, remain underground during the day to avoid being caught by predators. They feed primarily on seeds, fruits, and vegetation, and will occasionally eat burrowing insects. Physically, they are stout-bodied with distinguishing features that include elongated cheek pouches extending to their shoulders, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
