Monday, May 11, 2020

First Urban City in History




Gone are the days when people lived in the village, having their own households, a portion of arable land, a few animals there.

 The population grew, everything became a bit crowded and so the cities were created, which had other functions, commercial and craft, where you live with your neighbors. For 200 years, since industrialization, cities have grown in size, creating an ever-expanding oil and cement civilization. I know that the first city was Mureybet in Syria, founded in 10,000 BC

Mureybet - Alchetron




Then came Catalhoyuk in Turkey,  Jericho in Palestine, Ur, Eridu, Lagas, Ummah, Uruk, and Babylon in Iraq, Dobrovody in Ukraine, Abydos, Thebes and Memphis in Egypt, Mohenjo-Darro and Harrapa in India, Yinxu and Chengzhou in China.

Ancient Çatalhöyük - Wikipedia


In the classical period, Athens was established in Greece, Alexandria in Egypt, Carthage in Tunisia, etc.  But the first really sexy city was Rome, a real modern city by the standards of the time.

There are many sources that show that Rome was the first city to have 1 million inhabitants in the first century.  You may also like : Inferno "Historical Review and facts"

Alexandria, Egypt - Ancient History 


The second city to reach such a population would be Chang'an in China in the ninth century, Baghdad in Iraq and Kaifeng in China in the 10th century.

The first city with a population of 1,500,000 was Hangzhou in China in 1300.

The first city with a population of over 2 million was London in 1850, in the midst of the revolution. industries.

Aerial view of London, 1850. View of London looking north-east Getty Images


In 1870, London would have a population of 4 million, and in 1900-6 million.

London In 1900 Londonist








In 1925, the population of New York City reached 7 million, and after in 1962 to reach 15 million.

New York: the world's largest city in 1925 AD Highbrow 


But cities are not only measured by area and population, but also by the endowment and quality of life it offers to the population. Mohenjo Daro had a systematized infrastructure. The concept of "citizenship" and "vote" appeared in Athens.

Carthage was a great commercial center, and Alexandria was a true cultural capital.

Carthage - Ancient History Encyclopedia






Baghdad and Constantinople were great cultural and religious centers. Small city-states like Florence, Genoa, or Venice created their commercial maritime empires.

The first industrialized city with infrastructure, modern sewerage, factories, and plants, was London, which faced problems regarding poverty, disease, and congestion. Paris was perhaps the first city of style, a city of entertainment, a capital of fashion.



But the first mega-city was New York because it was not only huge in area, but also in height with its skyscrapers, dominated by jobs in the tertiary sector, being imitated by other cities such as Shanghai, Dubai, Tokyo. and so on.

Sunday, May 10, 2020

Strong X-ray emissions from binary system 3A 0726-260 discovered by Indian researchers

A New Signal for a Neutron Star Collision Discovered  NASA


Scientists have established that the origin of this signal is the binary system 3A 0726-260.

Using data provided by the AstroSat satellite, a team of Indian researchers was able to identify strong X-ray emissions from the 3A 0726-260 binary system, which consists of a magnetized neutron star and a regular star. Scientists explain that in the case of these systems, X-ray emissions are based on the material that the neutron star attracts from the atmosphere of the neighboring star, notes Phys.

First astronomy satellite ASTROSAT


The 3A 0726-260 system is about 20,000 light-years away, and as Indian scientists explain, it is one of the least studied pulsars in binary systems, although, according to their data. , it tends to be a fairly "bright" source, if we look at X-ray emissions. Astronomers have established that this system has an orbital period of 34.55 days, and the rotation period of the pulsar is 103 seconds.  Also, this 103-second pulse appears to be followed by a secondary, but weaker, pulse detected in another observer's data.

3A_0726-260 INTEGRAL Galactic Plane Scanning

"Changing the pulse profile from a single peak to a double-peaked structure can be explained by the intrinsic change that occurs in the beam pattern from a pencil beam to a hay beam, leading to the beam coming out of our line. visual. The change in the impulse process can also be attributed to a transition of the accretion model from a smooth, low-energy accretion stream to several narrow, high-energy accretion streams that are blocked in phase with the neutron star.


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Saturday, May 9, 2020

Carbon Dioxide Emissions and Global Warming can start the process of desertification of the Planet Earth as Sahara was Jungle a millennium ago

Sahara Jungle 10 000 years ago

A recent study brings us extremely worrying news: in 50 years, rising temperatures will dramatically affect the lives of more than three billion people.

10,000 years ago, the Sahara Desert was one of the wettest areas on Earth

This situation is proving extremely unfortunate, especially if we take into account the problems related to food security for these people whose agricultural land will become useless, notes Futurism.

Desert Earth Planet by Fragile-stock on DeviantArt


Fortunately, if we can say so, this is one of the darkest scenarios, but it starts from the reality we live in: insufficient actions related to stopping global warming and the continuous increase of carbon dioxide emissions globally.

Desert Earth ~ 3D Model ~ Download
The study points out that on every inhabited continent there will be a series of regions whose conditions will be extremely harsh and will not allow human life, among these regions are: Brazil, North Africa or India. This increase in temperatures will lead to the expansion of the temperate climate to more northern regions: Canada or even the Arctic.

Earth's Deserts: Definition Study.com


The direct consequence of these changes in environmental conditions will be the increase in the number of climate refugees, who will have to move from regions close to the equator to the north and south of the planet in search of less affected regions.



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Thursday, May 7, 2020

Antibodies from Llama helps world medicine in fight against the Coronavirus

Grippe et vaccin Sciences et Avenir


The antibodies produced by the Llama could be used against COVID-19.


You can also watch here number of infection with Coronavirus Updated (Live) on worldometers

A study by the University of Texas, USA, led to the discovery of antibodies that can "bind" to one of the key proteins on the surface of the coronavirus. The researchers explain that these antibodies attach to those proteins that allow SARS-CoV-2 to infect cells in the host organism. In addition to this discovery with significant potential against the pandemic we are going through, scientists also point to the unusual source from which they obtained these antibodies: a blade called Winter, notes Neuroscience News.

Antibodies for medicine génération et ingénierie MI-mAbs

This is one of the first known antibodies that can neutralize SARS-CoV-2
, said Jason McLellan, a member of the University of Texas Department of Molecular Bioscience and co-author of the study.

The effectiveness of these antibodies, called VHH-72, has been proven in laboratory cultures, and researchers are now focusing on studying their effects in laboratory animals. If these tests prove conclusive then scientists could receive the necessary approvals to start human testing.

Single-Antibodies Fusion explained Free Full-Text MDPI

"Vaccines should be given a month or two before infection to provide protection," said Dr. McLellan. "In the case of antibody therapies, we administer protective antibodies directly to a patient and thus, immediately after treatment, they should be protected. Antibodies could also be used to treat someone who is already ill to reduce the severity of the disease, ” he added.

Structural Basis for Potent Neutralization of Betacoronaviruses ScienceDirect.com

Scientists explain that when faced with an infection, the immune system of the lamellae produces two types of antibodies: one of them is similar to those produced by the human immune system and a type of small antibody, VHH- 72. The latter have only a quarter of the former and, in theory, could be administered with an inhaler. Scientists believe that such a method of administration could be extremely effective because it "directly" attacks the site of infection.



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The study was published in Cell.

Wednesday, May 6, 2020

May 9th: The End of the bloodiest conflagration in human history and three major holidays Independence Day, Victory Day, Europe Day

1945 front page Evening News (London) Alamy


On May 9th, we celebrate the end of the hostilities of the bloodiest conflagration in human history, when the trigger of World War II, German fascist Nazism, a great enemy of human civilization, was defeated, crushed and abolished as a state entity. On May 9th, 1945, under the concentric blows of United Nations forces, Nazi Germany was forced to surrender unconditionally.

Elbe Day - Wikipedia


Among the victorious states is our country, which on August 23, 1944 leaves the alliance with Nazi Germany and joins the alliance with the countries of the United Nations, with its full economic potential and an army of over 600 thousand people.

History of the United Nations The United Nations


As a tribute to the victors, May 9th was proclaimed Europe Day, with its significance in marking the importance for Europeans of the European construction process from 1945 to the present day, in order to harmoniously develop European states in peace and progress. economic.

Winston Churchill gives his famous 'V for Victory' memoryprints


We hope that, in the end, reason and wisdom will triumph. Mankind will be convinced that prosperity and prosperity cannot be achieved in a world torn apart by wars, more recently viruses wars, that only peace and understanding ensure the peace and well-being of mankind.


How do you perceive May 9?

May 8th is Victory Day

May 10 is Independence Day

May 9 is the day of the Romanian Communist Party

May 5th and 9 are both declared Europe Days

On May 5, 1949, the Council of Europe is established

Tuesday, May 5, 2020

Ancient mummy of a teenage girl dates to the 17th Dynasty and fine jewelry was discovered in Draa Abul Naga

Mummy Of Ancient Egyptian Teenager, Buried In Fine Jewelry Disclose.tv



Archaeologists from the Spanish National Research Council (CSIC) have announced the discovery of the mummy of a teenager from Ancient Egypt on whom a series of fine jewelry was discovered. It lived during the seventeenth dynasty and was buried around 1600 BC, surprisingly, although its sarcophagus was discovered by grave robbers it has remained intact, notes The History Blog.

Mummy Jewelry 17th Dynasty Thehistoryblog


The scientists who collaborated to make this discovery explain that the teenager was 15-16 years old when she died and that she was placed in a sarcophagus made from the trunk of a single tree that was painted with red pigments.



Archaeologists also explain that the mummy is in a rather poor state of preservation and that they discovered on it earrings, two rings and four necklaces placed in a pile on her chest. These necklaces were made of expensive materials, some of which were used to represent various deities. Researchers are surprised by the contrast between the jewelry discovered, quite expensive by weather standards, and the simplicity of the sarcophagus.

Mummy Jewelry 17th Dynasty 2 Thehistoryblog


Near this mummy were discovered a pair of shoes, which were colored red and decorated with a series of representations of sacred animals: ibis, cats, hippos, but also with images of two deities, who patronized the pregnancy, which led archaeologists to conclude that they belonged to a woman.


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The above post is reprinted from materials provided by Descopera and The history blog . Note: Materials may be edited for content and length.

Monday, May 4, 2020

Star Wars Day: May The Force Be With You. "Isolation does not stop fans of the series around the world from celebrating Star Wars Day"

The Empire Strikes Back 1980 Encyclopedia Britannica


May 4 is considered Star Wars Day. Isolation does not stop fans of the series around the world from celebrating.

A fan convention and an online fundraising campaign and series-inspired game updates are just some of the ways franchise fans celebrate isolation in 2020. May 4 is considered Star Wars Day. In 1978, franchise fans invented a pun based on the classic slogan

"May the Force Be With You"

May the Fourth Be With You! "

In 2020, Reedpop, the organization behind this holiday, will mark the event with an online convention.

Star Wars – Yoda May The Force Be With You Poster EuroPosters

The convention "An Online Revelry: May the 4th Be With You and Revenge of the 5th" takes place on May 4 and 5, in collaboration with the Comic Con Festival in New York. The event schedules multiple events, including live streaming of episodes of "Star Wars: The Clone Wars" and "Star Wars: Rebels" on Twitter, as well as question and answer sessions with screenwriters and actors associated with the franchise.

Star Wars: The Clone Wars Returns on Disney StarWars.com


Fans will be able to participate in general culture contests with prizes, with organizers encouraging them to use the hashtags # Maythe4th and # Revengeofthe5th.

Through Four Seasons, Star Wars Rebels Has Been a Storytelling StarWars.com


Latest updates for Star Wars Battlefront 2

The events will take place on ReedPop properties' associated social media accounts, including New York Comic Con, C2E2, BookCon, Emerald City Comic Con and Florida SuperCon

Star Wars Battlefront II Eneba


In 2020, fans have an additional reason to celebrate. The Star Wars Battlefront 2 game receives the latest updates. The latest package of options is called "The Battle on Scarif" and has already been broadcast online.

Battle of Scarif Wookieepedia - Fandom


The celebration began on Sunday with Rebelthon 2020, an online action that aims to raise funds for UNICEF and the fight against Covid-19.

The anniversary is also an opportunity for the Disney Plus platform to gather all the movies in the series and launch a documentary about the newest series dedicated to the Star Wars universe, "The Mandalorian". The second season of the story built around the little hero of the species of Master Yoda is scheduled for October.

Jon Favreau's live-action Star Wars The Verge


In 1978, fans invented a pun based on the classic "Star Wars" slogan "May the Force Be With You": "May the Fourth Be With You". Although fans in the United States initially called the expression Independence Day, July 4, the following year the date was reset to May 4, following the publication of an advertising page in The London Evening News, which contained a congratulatory message. addressed to the first British woman in office as Prime Minister, Margaret Thatcher, who won the election on May 4, 1979: “May the Fourth Be With You, Maggie. Congratulations! ".


At that time, the movie "Star Wars", released on May 25, 1977, had already won six Oscars, for best music, best sound mix, best visual effects, best costumes, best better decors and best fitting.

In addition, after the release of the movie "Star Wars-Episode III: Revenge of the Sith Lords", the phrase "Revenge of the 5th" appeared, which marks a holiday on May 5, dedicated to the negative characters of the franchise.

May 25, 1977: 'Star Wars' Opens in Theaters The Nation


Created from the imagination of George Lucas, the "Star Wars" franchise marked, in 1977, the birth of a new genre in commercial, popular cinema for the general public. Lucas sold Lucasfilm in 2012 for $ 4.05 billion to Disney studios, which continued the "Star Wars" series with three new films, released in 2015, as well as other derivative productions.

How 'Star Wars' creator George Lucas spends his $6.4 billion Business Insider


The Star Wars franchise has become a veritable cultural phenomenon, and characters such as Luke Skywalker, Princess Leia and Darth Vader and phrases such as "May the force be with you" have entered world popular culture.



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The above post is reprinted from materials provided by Descopera and Mediafax . Note: Materials may be edited for content and length.

Sunday, May 3, 2020

What are zoonotic diseases? Pathogens that spread between animals and humans

Zoonotic Diseases One Health CDC





























Updated today: 30/05/2021

The pandemic we are going through also brings a wave of misinformation which, in these conditions, proves to be extremely dangerous for public health, and for this problem there is only one effective solution: correct information. One of the terms that has been circulating in recent months is "zoonotic disease," but what does that mean?


"Simply, a zoonotic disease is one that originates in animals and is transmitted to humans," said Barbara Han, a researcher in disease ecology at the Cary Institute for the Study of Ecosystems in New York, USA, quoted by Live Science and Descopera.


Scientists at the US Centers for Disease Control and Prevention (CDC) explain that these diseases are prevalent worldwide and can be caused by viruses, bacteria, fungi. The infections that these pathogens can cause can have serious severity, ranging from mild symptoms to even death.

How are animal and human diseases interconnected? Foodsource























Experts estimate that about 60% of the infectious diseases we can suffer from can be spread by animals, and more importantly, three out of four new types of infections originate in animals.


How are these diseases transmitted?

Direct contact with animals proves to be the simplest way we can be infected with pathogens of animal origin, we are talking here about caresses, bites or scratches, because of this, those who work with animals daily are at greater risk of infection. . Unfortunately, even pets / pets are proving to be a potential source of exposure to pathogens in the animal microbiome.

How are animal and human diseases interconnected? Foodsource




























Researchers also point out that contracting a zoonotic disease can also be achieved through indirect contact, in which case we should pay attention to the water we consume or use, especially if it has come into contact with animals. Some pathogens of animal origin can also be transmitted through the air we breathe, for example Hantaviruses fall into this category, being transmitted through the fecal particles of rodents that reach the air we breathe.

Hantavirus Briej Twiter


Some zoonotic diseases are also transmitted through intermediaries, ticks or other organisms transmit through the blood the pathogens responsible for these diseases from animals to humans or between humans. These "intermediates" include mosquitoes or fleas, which transmit the Zike virus and the plague, respectively.


The most common zoonotic diseases

Intergovernmental and non-governmental organizations work together internationally to identify and manage the situation of these zoonotic diseases. Although this list is much longer, the CDC points out that the following eight are under constant scrutiny by the authorities:

Zoonotic flu


Salmonellosis



West Nile virus







Lyme disease



Why is zoonotic disease a threat?

Scientists explain that these diseases are a constant cause for concern for two important reasons: their incidence is increasing and the inability to determine where the next threat will occur.

Ecology of zoonoses: natural and unnatural histories The Lancet

One of the hypotheses that enjoys widespread support in the scientific community and which explains why the incidence of these diseases that originate in animals is increasing is the one that emphasizes the fact that we humans are increasingly invading animal habitats. We must also take into account the fact that our world is more and more connected, which exponentially increases the possibility that such a disease will spread over a large area in a very short time.


How do we protect ourselves?

Given the fact that the appearance of these diseases is not under our control, we need a plan to protect ourselves from them. First of all, we must be aware that, no matter what we see in the media, nature does not try to eliminate us and that the high risk of such diseases is small, but which should not be ignored.

Under these conditions, researchers recommend that we take care of personal hygiene, especially when we come in contact with animals and make sure that our pets or pets follow the recommended vaccine schedule, both for their health and for our health.


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Saturday, May 2, 2020

The longest Ancient Highway road in Yucatan built by Warrior Mayan Queen

Credit foto: Traci Ardren (University of Miami)/ Proyecto Sacbe Yacuna-Coba/ Cultural Heritage Engineering Initiative





The road was built about 1,000 years ago.

In the 1930s, scientists at the Carniege Archaeological Institute in Washington discovered a road connecting the cities of Cobá and Yaxuná in the Yucatan Peninsula, Mexico. Due to the materials used to build roads in this region, they were called "white roads", and the reason for their existence fascinated researchers.

A recent study, in which excavations were used but also aerial observations with the help of lidar, three-dimensional scanning with the help of laser, brings new evidence related to who ordered its construction. Travis Stanton, an archaeologist at the University of California Riverside, explains that the road was most likely ordered by K'awiil Ajaw, a warrior Mayan queen who ruled Cobá more than 1,000 years ago.  Live Science.

Maya warrior queen may have built the longest 'white road' Live Science


"Given the warlike nature of its monuments, it is possible that it was the leader who extended the road to extend his control to Yaxuná," explains Stanton.

Scientists who have studied the material culture of the Mayan civilization explain that these "white roads" were common throughout their territory, but that between Cobá and Yaxuná is the longest and has been a massive logistical effort, both in terms of time, but also of resources.

"We tend to interpret them as a kind of activity that presents the power of a political regime, or at least the alliance between two centers of power," said Traci Ardren, an archaeologist at the University of Miami.

A complicated political situation

Historians believe that Cobá's invasion of Yaxuná was caused by an increase in the military and political power of a third city: Chichen Itza. This city was about 23 kilometers from Yaxuna and, according to archaeological evidence, this city was the main political force in the center of the Yucatan Peninsula.

The death of Queen K'awiil Ajaw was followed by the decline of the military and political power of the city of Cobá. Arden explains that Cobá was a city in which only one family had a monopoly on political power, which means that the increase or decrease of influence in the region depended, to a large extent, on a strong central figure. Instead, Chichen Itza was, according to archaeological evidence, a more decentralized state, with several centers of power that stretched throughout.



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source descopera

500 years since the death of the great Leonardo Piero da Vinci

Decoding Da Vinci Limelight Magazine

501 years have passed since Leonardo da Vinci, a prominent figure in the Renaissance, passed away. His genius allowed him to leave his mark on the era, being a painter, sculptor, architect, musician, engineer, inventor, anatomist, geologist, cartographer, botanist and writer.

Leonardo da Vinci's personality also proved to be tender 500 years after his death, on May 2, 1519.

Two Italian experts will perform a DNA test using a strand of hair believed to belong to da Vinci. The strand comes from a private collection in the United States and will be exhibited starting Thursday at the Leonardo Davinci Museum of Ideals in Vinci, the city in Tuscany where the famous artist was born.

Decoding Da Vinci Death 500 years tribute Limelight Magazine


Scientists believe that the DNA analysis could dispel any doubts about the artist's remains, which are said to have been discovered in a tomb in Amboise, France.

Da Vinci was originally buried in the chapel of Saint Florentin in the Amboise Castle in the Loire Valley. But the tomb was destroyed during the French Revolution and the bones are believed to have been moved to a smaller chapel (Saint-Hubert) of the same castle. However, so far it has never been established with certainty that these are Leonardo's remains.

Leonardo da Vinci's Tomb Atlas Obscura


Leonardo Da Vinci lived in France for the last three years of his life, at the invitation of King Francis I.

Born on April 15, 1452, Leonardo is considered one of the most important personalities of the Renaissance. Famous both as a painter and as a sculptor, architect, musician, engineer, inventor, anatomist, geologist, cartographer, botanist and writer, da Vinci reflected his aspirations for a practical approach to the theoretical fields specific to his time.

Chapel of Saint Hubert, Amboise (Illustration) - Ancient History Encyclopedia

We have all heard of "The Vitruvian Man" and "The Mona Lisa", some of the works that made da Vinci known throughout the world. Mona Lisa has always generated discussion among scientists and artists, all trying to find out more about the woman with the look "following you around the room" and has an unmistakable smile.

According to the most widespread hypothesis, the model of the painting was named Lisa Gherardini, born in 1479, in Florence. A descendant of a modest family, she married at the age of 16 the son of a cloth merchant, himself a merchant, Francesco di Bartolomeo del Giocondo, and gave him three children.

When, in 1503, Francesco del Giocondo moved to a more spacious apartment on Via del Stufa and decided to make a portrait of his wife, he turned to Leonardo da Vinci. Francesco never received his commissioned work.


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Friday, May 1, 2020

Fundamental forces are different depending on the region of space!

EarthSky

Data collected from a quasar 13 billion light-years away suggest a discrepancy between measurements of fundamental forces on Earth and those in that region.

Scientists have observed over time the existence of four fundamental forces: electromagnetism, gravity, strong nuclear force and weak nuclear force. A study that gathered data from a number of previous studies concluded that electromagnetism has values ​​that vary depending on the region of the universe in which it is measured, and this has a number of implications for how we understand the universe.

Starting from these differences in the values ​​of electromagnetism, scientists have theorized that they have a kind of north and south poles, which show the direction in which these variations can be mapped. "The new study seems to support this idea that there could be a directionality in the Universe, which is really very strange. So the universe may not be isotropic in its physical laws to be the same, statistically, in all directions, ”explains James Webb, a researcher at the University of New South Wales in Australia.



"But, in fact, there could be a certain direction or preferred direction in the Universe where the laws of physics change, but not in a perpendicular direction. In other words, the Universe has, in a certain sense, a dipole structure ", explains the researcher.

The data collected in this study call into question the theories and explanatory models that scientists currently use to explain how the universe evolves and various phenomena occur. "Our standard model of cosmology is based on an isotropic universe, one that is statistically the same in all directions. This standard model is built on Einstein's theory of gravity, which explicitly assumes the constancy of the laws of nature, "adds Webb.


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The study was published in Science Advances.