ETIMOLOGIA DA PALAVRA VIRUS
From Latin: slime, poisonous liquid; related to Old English wāse marsh, Greek ios poison.
O QUE SIGNIFICA VIRUS EM INGLÊS
Vírus
Um vírus é um pequeno agente infeccioso que replica apenas dentro das células vivas de outros organismos. Os vírus podem infectar todos os tipos de formas de vida, desde animais e plantas até bactérias e arqueias. Uma vez que o artigo de Dmitri Ivanovsky de 1892 descrevendo um patógeno não bacteriano infectando plantas de tabaco e a descoberta do vírus do mosaico do tabaco por Martinus Beijerinck em 1898, cerca de 5.000 vírus foram descritos em detalhes, embora existam milhões de tipos diferentes. Os vírus são encontrados em quase todos os ecossistemas na Terra e são o tipo mais abundante de entidade biológica. O estudo de vírus é conhecido como virologia, uma sub-especialidade de microbiologia. As partículas de vírus (conhecidas como viriões) consistem em duas ou três partes: i) o material genético feito de DNA ou RNA, moléculas longas que carregam informações genéticas; ii) um revestimento proteico que protege esses genes; e, em alguns casos, iii) um envelope de lipídios que envolve o revestimento de proteína quando estão fora de uma célula. As formas dos vírus variam de simples formas helicoidais e icosaédricas a estruturas mais complexas. O vírus médio é cerca de um centésimo do tamanho da bactéria média.
definição de virus no dicionário inglês
A primeira definição de vírus no dicionário é qualquer um de um grupo de entidades submicroscópicas consistindo de uma única cadeia de ácido nucleico cercada por uma camada de proteína e capaz de replicação somente dentro das células de organismos vivos: muitos são patogênicos. Outra definição de vírus é uma doença causada por um vírus. O vírus também é uma influência corrupta ou infectadora.
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10 CITAÇÕES EM INGLÊS COM «VIRUS»
Citações e frases célebres com a palavra
virus.
Dance music is like a virus: it has affected so many different genres.
The virus that causes AIDS is the trickiest pathogen scientists have ever confronted. It mutates furiously, it has decoys to evade the immune system, it attacks the very cells that are trying to fight it, and it quickly hides itself in your genome.
Natural selection shaped the human brain to be drawn toward aspects of nature that enhance our survival and reproduction, like verdant landscapes and docile creatures. There is no payoff to getting the warm fuzzies in the presence of rats, snakes, mosquitoes, cockroaches, herpes simplex and the rabies virus.
With the absence of a flu vaccination last year, I did not take a flu shot; but there is still some immunity that carries over from year to year; but about every 30 years, there is a major change in the genetics of the flu virus.
Changes... can only be effected by alterations in the original. The only thing not prerecorded in a prerecorded universe are the prerecordings themselves. The copies can only repeat themselves word for word. A virus is a copy. You can pretty it up, cut it up, scramble it - it will reassemble in the same form.
The unique nature about the influenza virus is its great potential for changes, for mutation.
A virus is not just DNA; a virus is also packaged up, covered over with a series of proteins in a nice, elegant, well-compacted form.
If an employee told you he had the flu, you'd send him home. If an employee told you he was feeling anxious, you'd probably tell him to get back to work. But the emotion is just as contagious as a flu virus.
It turns out that viruses evolve from each other, like everything else. So if you look at the evolutionary tree of viruses, you can find parts of their genome that haven't changed over evolutionary time. You can recognize what may be a new virus by identifying this little piece of their genome that hasn't changed and is represented on the chip.
I'm actually pretty scientifically interested. I have a lot of friends who are doctors, so the idea of the virus and the synapses in the brain and how the nervous system works was actually all pretty familiar to me.
10 LIVROS EM INGLÊS RELACIONADOS COM «VIRUS»
Descubra o uso de
virus na seguinte seleção bibliográfica. Livros relacionados com
virus e pequenos extratos deles para contextualizar o seu uso na literatura.
1
The Panic
Virus: The True Story Behind the Vaccine-Autism ...
A searing account of how vaccine opponents have used the media to spread their message of panic, despite no scientific evidence to support them.
2
Virus of the Mind: The New Science of the Meme
In Virus of the Mind, Richard Brodie carefully builds on the work of scientists Richard Dawkins, Douglas Hofstadter, Daniel Dennett, and others who have become fascinated with memes and their potential impact on our lives.
Doctors investigating the outbreak of an unknown disorder discover a connection between the deadly epidemic and computers
4
Virus Taxonomy: Classification and Nomenclature of Viruses : ...
Representing the work of more than 500 virologists worldwide, this report is the authoritative reference for virus organization, distinction, and structure.
Andrew M.Q. King, Michael J. Adams, Elliot J. Lefkowitz,
2012
5
Inventing the AIDS
Virus
Investigates the political and financial forces that have shaped AIDS research, including the growing dissension within scientific ranks, the power politics among virologists, and other controversial issues
In Virus, every aspect of Penna's life is controlled for her: a computer programme tells her when to get up, eat, sleep.
When a deadly superflu is unleashed on the world, scientist James Logan must confront a desperate terrorist, armed government agents, and Virus Thirteen to save his wife and the world.
8
West Nile
Virus: Overview and Abstracts
Carefully selected abstracts of virus-related literature follow as do accessible author, title, and subject indexes. For the study of the West Nile Virus, this book is a valuable resource.
9
Virus Taxonomy: VIIIth Report of the International Committee ...
This is the standard and definitive reference for virus taxonomy, generated by the ICTV approximately every 3 years.
Claude M. Fauquet, M.A. Mayo, J. Maniloff,
2005
Including the technical description of four basic virus types found on IBM PCs and compatibles, along with programs to detect these viruses and programs to remove them, this book enables readers to learn how to protect a computer system ...
10 NOTÍCIAS NAS QUAIS SE INCLUI O TERMO «VIRUS»
Conheça de que se fala nos meios de comunicação nacionais e internacionais e como se utiliza o termo
virus no contexto das seguintes notícias.
#theBrief: Why Isn't There a Vaccine for the MERS Virus?
MERS is a virus similar to SARS, and easily confused with the flu or common cold. It's also highly contagious.The disease was first identified in Saudi Arabia in ... «TIME, jun 15»
'Shopping' for hospitals may have spread deadly MERS virus
The deadly MERS virus found ideal conditions to spread quickly in South Korea, where emergency rooms are known to cram beds closely together and patients ... «The Seattle Times, jun 15»
Liberia Nearly Ebola-Free, But Could the Virus Come Back?
Health officials typically wait 42 days to declare a country Ebola-free, because this is twice as long as the 21-day incubation period of the virus (the time it takes ... «Live Science, mai 15»
New York doctor diagnosed with Ebola now cleared of virus
Cleared of the virus, Spencer no longer poses a public health risk and is due to ... Thomas Eric Duncan, the first person to be diagnosed with the virus in the US ... «The Guardian, nov 14»
How long does the ebola virus live on a surface?
The New York Times published an interesting piece on Ebola facts and how many have been treated for the deadly virus outside of Africa, including who has ... «AOL News, out 14»
Dallas nurse Nina Pham cleared of Ebola virus, released from hospital
A Dallas-area nurse infected by the Ebola virus, and who sparked a nationwide search for other possible infections, was declared free of the virus and released ... «Fox News, out 14»
Ebola Study Projects Spread of Virus on Overseas Flights
The upshot is “that controlling the outbreak at the source is the most important thing that needs to happen” to prevent the international spread of the virus, said ... «Wall Street Journal, out 14»
Ebola crisis: Spanish health workers attack poor training for …
Spanish health professionals have taken aim at the scant amount of training offered to those on the frontline fighting the Ebola virus as the investigation ... «The Guardian, out 14»
Ebola patient Thomas Duncan may have spread virus, NIH expert says
Although he believes Ebola is contained in Texas, where Liberian man Thomas Eric Duncan first showed symptoms of the virus after traveling to the U.S., ... «CBS News, out 14»
How the Ebola virus spreads
But the first thing you should know is that it's not very contagious -- "Common sense and observation tell us that spread of the virus via coughing or sneezing is ... «CNN, out 14»