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Mostrar mensagens com a etiqueta Estudo. Mostrar todas as mensagens

segunda-feira, 3 de dezembro de 2018

Ai o tamanho do coiso...

E um estudo sobre o tamanho do pénis que foi cancelado por falta de dados válidos:
https://www.theguardian.com/commentisfree/2018/jul/06/penis-size-mental-health-issue-self-esteem

Quoting:
"She tried to do a noble thing, which was to conduct a study into how a man’s penis size is related to his self-esteem and other factors, only to find that the internet responded to her request for pictures (or “dick pics” as the media framed it) accordingly and flooded her with joke images of cartoon characters. She cancelled the study this week, saying the quality of the data had been compromised. I imagine she is royally dicked off."

terça-feira, 23 de outubro de 2018

Ai o tamanho dos dedos...

Em média, em média, note-se:
https://www.noticiasaominuto.com/lifestyle/1101985/o-que-o-tamanho-dos-dedos-diz-acerca-da-sua-sexualidade-diz-a-ciencia

Citando:
"Em média o gémeo homossexual apresentava uma maior diferença entre o tamanho do dedo indicador e o dedo anelar." (...) "“Os gémeos idênticos , que partilham 100% dos mesmos genes, podem divergir no que toca à sua orientação sexual. Como tal fatores para além da genética desempenham igualmente um papel”.

“Pesquisas sugerem que a sexualidade humana é determinada no útero e que está dependente da quantidade de hormonas masculinas às quais estamos expostos ou à forma como os nossos corpos reagem individualmente a essas hormonas. Estando aqueles que são mais sujeitos a altos níveis de testosterona mais predispostos a ser bissexuais ou homossexuais”."

quarta-feira, 12 de setembro de 2018

Saúde mental e música

https://www.sciencedaily.com/releases/2015/10/151022094959.htm

Citando:
""Some ways of coping with negative emotion, such as rumination, which means continually thinking over negative things, are linked to poor mental health. We wanted to learn whether there could be similar negative effects of some styles of music listening," explains Emily Carlson, a music therapist and the main author of the study.

Participants were assessed on several markers of mental health including depression, anxiety and neuroticism, and reported the ways they most often listened to music to regulate their emotions. Analysis showed that anxiety and neuroticism were higher in participants who tended to listen to sad or aggressive music to express negative feelings, particularly in males. "This style of listening results in the feeling of expression of negative feelings, not necessarily improving the negative mood," says Dr. Suvi Saarikallio, co-author of the study and developer of the Music in Mood Regulation (MMR) test."


quinta-feira, 9 de agosto de 2018

Vírus em bloco mais contagiosos...


https://text.npr.org/s.php?sId=637015778

Citando:
"Before this new research, scientists thought individual particles of a virus spread illnesses more effectively. It seemed like basic arithmetic. If you have 1,000 virus particles, you have 1,000 chances for cells to become infected. If you have only 20 clusters of viruses, they have only 20 chances to attack cells. Right?

Nope. In 2015, the researchers discovered that the viral clusters were much more effective at attacking human cells. But those results were from laboratory experiments. Could the same hold true in real life?"


terça-feira, 3 de abril de 2018

sexta-feira, 30 de março de 2018

quinta-feira, 26 de outubro de 2017

Trabalhar 30h aos quarenta?

http://www.curiosidadesdaterra.com/2017/10/pessoas-com-mais-de-40-anos-devem.html?m=1

sábado, 21 de outubro de 2017

Mortes

http://www.wpxi.com/news/national/imagine-being-dead-and-knowing-youre-dead-thats-what-happened-in-a-new-study/627155103

Citando:
"To do so, they examined individuals who suffered cardiac arrest, but were later revived. The scientists noted that death was defined by when the heart stops and blood stops flowing to the brain.

During the evaluation, many patients were able to recall full conversations and visuals, and in some cases, participants even reported hearing they had been pronounced dead. 

"They'll describe watching doctors and nurses working; they'll describe having awareness of full conversations, of visual things that were going on, that would otherwise not be known to them," lead author Sam Parnia told Live Science.

Scientists confirmed the patients’ stories with doctors and nurses present at the time of death, and were stunned to hear what the subjects remembered.

Why is there still brain activity after death?

Brain death is a process. It takes up to 20 seconds before brain waves are no longer detectable. Once they aren’t, a set of cellular processes take place that eventually result in brain death. And this could occur hours after the heart has stopped, Parnia said. 

"If you manage to restart the heart, which is what CPR attempts to do, you'll gradually start to get the brain functioning again. The longer you're doing CPR, those brain cell death pathways are still happening — they're just happening at a slightly slower rate," he said.

The scientists are now expanding their ongoing experiment, which will be the largest of its kind, to investigate the occurrences of consciousness after death and how it may affect the rest of a person’s life if they are revived."

quarta-feira, 30 de agosto de 2017

Beber café faz bem ou mal?

Aparentemente bem, de acordo com este estudo que durou 18 anos:
http://visao.sapo.pt/visaomais/2017-08-29-Beber-cafe-reduz-risco-de-mortalidade

Citação:
"“Os resultados sugerem que beber quatro chávenas de café por dia pode ser incluído numa dieta saudável em pessoas saudáveis”, afirmou Adela Navarro, que não encontrou diferenças na taxa de mortalidade entre homens e mulheres ou entre quem segue muito ou pouco a dieta mediterrânea. Já na relação com a idade, os resultados variaram: nas pessoas com mais de 45 anos, o consumo de café em doses superiores a quatro chávenas diárias revelou uma tendência para uma taxa de mortalidade ainda mais reduzida, informou a Sociedade Europeia de Cardiologia em comunicado.

Estas conclusões estão em linha com outro estudo recente, que juntou uma equipa multidisciplinar para avaliar a relação entre o consumo de café e a taxa de mortalidade em dez países europeus. Financiada pela Comissão Europeia e a Agência Internacional para a Investigação do Cancro, a pesquisa envolveu mais de 500 mil pessoas, num período médio de 16 anos, e concluiu que “beber café foi associado a um menor risco de morte por várias causas”. Os investigadores não identificaram diferenças entre os países estudados, França, Alemanha, Reino Unido, Espanha, Holanda, Grécia, Itália, Suécia, Noruega e Dinamarca."

sábado, 19 de agosto de 2017

Sexo por idades (estudo)

http://metro.co.uk/2017/08/19/how-much-sex-are-people-in-your-age-group-having-6864252/

quarta-feira, 8 de março de 2017

Adultos estão a reduzir a sua "actividade" (RU)

https://www.theguardian.com/lifeandstyle/2017/mar/07/adults-are-having-less-sex-than-20-years-ago-finds-study
Citando:
"Adults are having sex less often than they were 20 years ago, according a US study based on a survey of almost 27,000 individuals.

Researchers have found that adults, on average, were having sex seven fewer times annually in the early 2010s compared to the early 1990s, and nine fewer times compared to the late 1990s.

The study follows research published by the same team last year which found that the percentage of adults aged between 20 and 24 who had had no sexual partner after the age of 18 had more than doubled between those born in the 1960s and the 1990s, rising from 6% to 15%."

terça-feira, 7 de março de 2017

Como é que os animais antecipam a altura de procriar?

R: Melatonina?

https://www.eurekalert.org/pub_releases/2017-03/uob-sdh030617.php

Citando:
"A new study, conducted at the University of Bristol, has identified how animals measure annual time to control seasonal fertility.

In birds and mammals, this process of adaptation is mediated by the release of hormones from the pituitary gland that control multiple functions such as reproduction, the response to stress, and when the animals grow a new coat. The measurement of day length, however, and consequently time of year, is mediated by the hormone melatonin, which is released from the pineal gland during the night. Until now, how melatonin could signal to the pituitary was not understood and has been the subject of a 30-year quest."

terça-feira, 14 de fevereiro de 2017

Poluição do fundo do mar estudada (e perdura por décadas aparentemente)

(os estudos tipicamente analisam até 2000m, este não):
http://www.nature.com/articles/s41559-016-0051

Citando:

  • "POPs were released into the environment through industrial accidents and discharges, leakage from landfills, or incomplete incineration 7 . Two key POPs are polychlorinated biphenyls (PCBs, used as dielectric fluid) and polybrominated diphenyl ethers (PBDEs, used as flame retardants). From the 1930s to when PCB production ceased in the 1970s, the total global production was ~1.3 million tonnes 8 . Approximately 65% is thought to be contained in landfills or still within electrical equipment, with the other 35% residing in coastal sediments and open oceans 9 . These pollutants are invulnerable to natural degradation 10 and so persist in the environment for decades. Moreover they can spread great distances, including to seemingly isolated environments, such as polar regions and the open ocean 3 .

Pollutants entering the deep sea are deposited in sediments and can readily accumulate in the food chain 11 . Studies on deep-sea organisms have reported higher concentrations than in nearby surface-water species 11,12 . However, although these studies are described as ‘deep sea’, they rarely extend beyond the continental shelf (<2,000 m), so contamination at greater distances from shore and at extreme depths is hitherto unknown."

segunda-feira, 23 de janeiro de 2017

Quem diz mais asneiredo é mais honesto?

Quem diz mais asneiredo é mais honesto? Não necessariamente:
https://www.yahoo.com/news/people-swear-more-may-more-150000691.html
Citando:
""Honesty in our article is mainly about the authentic genuine expression of the self in interactions with others,” Feldman told Mashable. “We did not measure blunt unethical or immoral behavior, and therefore cautioned in the article that the findings should not be interpreted to mean that the more a person uses profanity the less likely he or she will engage in more serious unethical or immoral behaviors.” 
In other words, this doesn't mean that people who swear more are somehow better people than those who don't. This study simply suggests that people who swear more demonstrate more honest language patterns and are less likely to pad their speech with lies or misleading information. "

quarta-feira, 3 de agosto de 2016

Mais estudos orgasmáticos

http://www.nydailynews.com/life-style/health/g-spot-vaginal-orgasms-don-exist-study-article-1.1967337


Citando:
"Whether you think it's vaginal or clitoral, it doesn't matter: it's all the same orgasm, according to researchers in a new Clinical Anatomy report.
Those moments of pleasure should be referred to as a "female orgasm," just like men's ejaculation is called a "male orgasm," they wrote."