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Showing posts from October 13, 2019

How much of what we think we know about black holes is actually true?

There’s a fascination with the idea of a region of space having a gravitational pull so strong, nothing can escape its deadly grasp, not even a sliver of light.Well, not quite. In fact, much of what we think we know about black holes turn out to be myths.
Black hole Myth 1 – All black holes are black. 
As this photograph from the Event Horizon telescope demonstrated, light can be detected near a black hole’s event horizon.
This is the boundary between normal space and the space affected by the black hole's gravity, from which no escape is possible. 

Part of this light comes from the black hole’s accretion disk, a flat, pancake like structure composed of dust, gas and other debris.

Friction constantly moves the disk’s material inward toward the event horizon. Light also comes from jet streams which propel matter outward along the disk’s north and south poles.

Black hole Myth 2: All black holes are about the same size, types of black holes.
Black holes actually come in several different si…

How can genetic engineering affect human health? (genetic engineering examples)

Humans have been engineering life for thousands of years. What are the benefits of genetic engineering in medicine?
Through selective breeding, we strengthened useful traits in plants and animals. We became very good at this, but never fully understood how it worked.
Until we discovered the code of life, Deoxyribonucleic Acid—DNA. A complex molecule that guides the growth, development, function, and reproduction of everything alive.
Information is encoded in the structure of the molecule. Four nucleotides are paired and make up a code that carries instructions.Change the instructions and you change the being carrying it.As soon as DNA was discovered, people tried to tinker with it.Genetic engineering examples in medicineIn the 1960's, scientist bombarded plants with radiation to cause random mutations in the genetic code.

The idea was to get a useful plant variation by pure chance. Sometimes it actually worked too.

In the 70's, scientists inserted DNA snippets into bacteria, plants…

Scientists grown miniature copies of the brains of chimpanzees, macaques, and humans.

Scientists tracked what exactly differs in the nature of growth of the nervous system of primates.The conclusion is that neurons in the cortex of chimpanzees and macaques “mature” faster than in humans.


Scientists have grown miniature copies of the brain of chimpanzees, macaques, and humans in vitro and for the first time tracked what exactly differs in the nature of growth of the nervous system of primates.Their findings were published in the journal Nature."We showed that the neurons of the cortex of chimpanzees and macaques mature "faster than in humans, if we compare them at the same developmental stage. This suggests that the human nervous system develops much more slowly than in the other two primates."
Said Barbara Treutlein, a geneticist at the Institute for Evolutionary Anthropology in Leipzig, Germany, whose words are quoted by the institution’s press service.

According to current estimates of scientists, human and chimpanzee genomes match by 99%, however, our ne…

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"Very high at the global level." WHO has changed the risk assessment for coronavirus COVID-19.

The Director-General of the World Health Organization, Tedros Adhanom Ghebreyesus, announced that the risk assessment of coronavirus at the global level has been raised to "very high". This was reported on Friday.

LIVE daily media briefing on #COVID19 with @DrTedros#coronavirushttps://t.co/Uuup642t9d — World Health Organization (WHO) (@WHO) February 28, 2020

We have raised our assessment of the risk of spread and impact of COVID-19 to a very high level at the global level, he said during a press conference that was broadcast on Twitter by the organization.



The full briefing on #COVID19 by @DrTedroshttps://t.co/TM5aCuNm9qpic.twitter.com/yzG0Y4hbTo — World Health Organization (WHO) (@WHO) February 28, 2020
Chinese authorities told WHO in late December 2019 about an outbreak of unknown pneumonia in the city of Wuhan in central Hubei province. 

🔹 Specialists found that the pathogen is a new type of coronavirus. 

WHO recognized the outbreak as an emergency of international importance an…

Mexico Confirms First Coronavirus Infection | COVID-19 SARS-Cov-2 Update

Mexican Assistant Secretary of Health Hugo Lopez-Gatell reported the first case of infection with the new coronavirus COVID-19 in the country.

According to the Health Department, the virus was diagnosed in a 35-year-old man, who was in Italy from February 14 to 22. At the moment he is in isolation in one of the hospitals, his condition is stable.

The Chinese coronavirus continues to spread rapidly around the world. The number of infected people has exceeded 78.8 thousand in China itself, 2.3 thousand in South Korea, 388 in Iran and 650 in Italy. 

In the last 24 hours, the first cases of infection have been detected in the Netherlands, Nigeria, Lithuania, Belarus, New Zealand and Azerbaijan.

Undersecretary of Health, Hugo Lopez-Gatell, reported that the person infected by Covid-19 is in CDMX; they are waiting for a second test for another person in Sinaloa

Undersecretary of Health Hugo Lopez-Gatell confirmed the first case imported into Mexico of coronavirus, which is called Covid-19.

During…

Chinese and US scientists found new methods for virus detection

Two medRxiv articles on the same day: A new method to detect viruses has been found by Chinese as well as other scientists, which can be tested on-site, with results within 45 minutes.



🔹 These methods are of great significance for the community and the general population to detect infection with the virus.
The new coronavirus (SARS-CoV-2 or 2019-nCoV) threatens global health, and although it is very similar to SARS-CoV, it is more contagious.
Existing RT-qPCR detection methods often require expensive equipment and trained professionals. Under these circumstances, it is urgent to develop a technique that is fast, accurate, and capable of detecting viruses in the field.
On February 25, preprint website medRxiv issued respectively by the Institute of Applied Biology, Shenyang University of Chemical Technology, Dr. Yin Xiushan team, and the American Royal Oak, Michigan Beaumont Michael B Chancellor team.


The study reports brought by Chinese and foreign scientists revealed reverse transcriptas…

SpaceX wants to send three tourists to the ISS

The US space company SpaceX wants to send three tourists to the International Space Station ISS.



It is planned that the tourists will travel to the ISS in the second half of 2021 together with a commander in the "Crew Dragon" space capsule, as the Texas start-up Axiom - SpaceX's partner company in the project - announced on Thursday.Neither of the two companies gave any indication of how much the tourists would probably have to pay for the trip. 

The costs for the launch of the Falcon 9 rocket alone, which will transport the space capsule into space, amount to around 60 million dollars (53 million euros).

In addition, the construction of a new "Crew Dragon" capsule must be financed.

🔹 In this respect, the ticket for the flight should cost tens of millions of dollars.

In earlier years, a total of eight tourists had already travelled to the ISS in Russian Soyuz capsules. 

The first was US entrepreneur Dennis Tito in 2001, who paid 20 million dollars for a vacati…

A new species of insect was named after Lady Gaga for being eccentric. | Kaikaia gaga

Insect was named after Lady GagaBrendan Morris, PhD at the University of Illinois, observed the behavior of about a thousand treehoppers for his research project when he suddenly noticed one female who was different from the others.


Scientists decided to name the recently discovered insect in honor of Lady Gaga for their "eccentric sense of style," NME reports.

In the scientific publication Zootaxa, he and his co-author, the entomologist Christopher Dietrich, wrote about it "an additional cross m-cu (between the fourth and fifth longitudinal veins) in the front wing, as well as a frontal-clipella form".

Morris decided to call the insect "Kaikaia gaga" so that specialists could understand what kind of species we are talking about.

"If there ever is a Lady Gaga bug, it will definitely be a treehopper bug because of its crazy horns and eccentric sense of style. They don't look like anything you've seen before," he explained.

Now Morris hopes…

How the lungs of a person suffering from Coronavirus look | Photos

Chinese doctors have published an x-ray of the lungs of a patient with the coronavirus 2019-nCoV that has spread through China and other countries.

The images published by Chinese doctors are of a 33-year-old woman who entered the hospital after presenting symptoms such as fever and cough for five days.
CT Imaging of the 2019 Novel Coronavirus (2019-nCoV) Pneumonia.https://pubs.rsna.org/doi/10.1148/radiol.2020200236 …



At the time of the woman's admission, doctors noted that her body temperature had risen to 39°C and heard the sounds of her breathing were harsh in both lungs.









Doctors examine the patient for coronavirusAccording to the results of the studies published in the journal Radiology, the patient had a clear deficiency of white blood cells, as well as multiple peripheral opacities in ground-glass in both lungs.
The outbreak of coronavirus that has put the whole world on alert because of its spread in several countries emerged in the Chinese city of Wuhan at the end of December …

Germany Has Announced a Coronavirus Epidemic | COVID-19, SARS-CoV-2 Update

German Health Minister Jens Spahn announced that the country is at the beginning of the COVID-19 epidemic, the Tagesspiegel newspaper reported.


According to the minister, the chain of infection with coronavirus SARS-CoV-2 has recently become extremely difficult to track - and because of this it is not clear whether the current strategy to combat the virus will lead to limiting its spread.

According to Spahn, the Ministry Health, the Robert Koch Institute for Infectious Diseases and the authorities of the federal states affected by the virus have established a crisis headquarters to counter the epidemic.

The minister urged citizens not to panic and not to go to hospital because of a simple cough - but those who have visited infected areas in the past two weeks are advised to be examined and go to home quarantine.




Video | In early February 2020, thousands of people around the world were infected with a brand-new type of coronavirus. The authorities are taking "unprecedented" mea…

The number of patients with coronavirus in the United States exceeded 60 people

The number of confirmed coronavirus cases in the U.S. has reached 62, the Center for Disease Control and Prevention (CDC) said Friday.
The CDC reported 34 cases last Friday. In 11 of them, those who had previously returned to the U.S. from abroad, and in two more cases coronavirus was transmitted from person to person in the United States.

In addition, 21 people were transported by State Department flights: three from Wuhan and 18 from the Diamond Princess ship from Japan.






According to the latest CDC data, of the 62 infected, 12 had previously returned to the United States from overseas trips. The number of human-to-human infections has increased to three.

The number of infected US citizens evacuated from the Diamond Princess has reached 44. The number of infected citizens coming from Chinese Wuhan remained the same.

On December 31, 2019, Chinese authorities informed the World Health Organization (WHO) about an outbreak of unknown pneumonia in Wuhan city in central Hubei province. Speciali…

Scientists propose to fight viruses with fullerenes

Fight viruses with fullerenes
Scientists from Skoltech and the Institute of Problems of Chemical Physics of the Russian Academy of Sciences have created water-soluble fullerene compounds that have valuable biological properties. The results of the study are published in the journal Chemical Communications. Thanks to this biological properties they can be used to develop effective antiviral drugs, including to suppress the human immunodeficiency virus (HIV).

Fullerenes are molecular compounds composed of three-coordinated carbon atoms, which are closed convex polyhedra. Depending on the number of atoms in the molecule, fullerenes resemble a soccer ball (C 60 ) or a rugby ball (C 70 ) in shape.

Compounds based on fullerenes have a pronounced antiviral, antibacterial, antitumor and antioxidant activity, so scientists have long viewed them as a promising basis for the creation of new drugs. Unfortunately, fullerenes are absolutely insoluble in water, which prevents their use in medicine.

R…

The number of deaths from coronavirus in Italy rose to 12.

The number of deaths due to coronavirus infection in Italy has risen to 12, with a total of 374 cases since the beginning of the epidemic, the head of the Italian Civil Protection Service Angelo Borrelli said at a press conference in Rome on Wednesday.



Borrelli, who was appointed by the government on 31 January as commissioner for the implementation of the state of emergency in connection with the spread of coronavirus, said that the total number of infected people includes all dead and recovered people.

Eleven deaths had previously been reported. All of them had been recorded in northern Italy in the Lombardy and Veneto regions. 

🔹 All the deceased were elderly people, some of them suffering from serious chronic diseases.

On Wednesday morning, the authorities of Emilia Romagna officially announced the first fatal outcome of coronavirus infection in the region. 

It was a 70-year-old patient permanently residing in Lombardy. He died in a hospital in Piacenza. According to medical reports, …