"Vampire" how much blood to drink every day?

Blood nutrient imbalances, vampire bats are very loving you Hey said "Vampire" 16 century, Teresa painter Bruegel's masterpieces of the death of victory is to draw the black death spread as the background.

As an artistic image of the vampire is very attractive. But historically, does anyone believe in vampires of objective existence, even in contemporary still found "kill vampires" tragedy. Next, we went from a scientific perspective, vampires really possible.

Mathematics

"Vampire" is not possible

In 2006, the United States physics professor Evelyn reference Mio (CostasEfthimiou) it is necessary to use the mathematical proof that the world is not possible to have the vampires exist.

Folklore that vampire to take blood for a living, to take over the person becomes a vampire and start taking another person's blood. However, from a mathematical point of view, this is similar to the "virus" will be give the number of the "Vampire" to expanding exponentially rapid growth. Evelyn reference Mio to prove the existence of vampires can't analysis process is as follows: according to his calculations, in the year 1600, 1/1 the total number of inhabitants of the Earth about 5.37 billion people. Assuming that the world's first vampire appear on this day, and each month the average consumption of a person's blood, so to 1600 years of 1 February, the number of vampires in the world will be increased to 2. Over time, the number of vampire will gradually increase. In this way, only about two and a half years, all people on Earth becomes a vampire. If you consider normal mortality rate, so human extinction rate will also be faster. Even if human reproduction speed surprisingly high, nor may hinder their own demise. So Avery reference Mio said: "If the world really exists, even if vampires human number each month doubling, nor is it possible to avoid the fate of final destruction. ”

br>Evelyn reference Mio.

Nutrition

Vampire too hard

From the nutritional point of view, a vampire life rely on spectrum?

United States Purdue University food engineering, science writer, a cloud, no human blood in approximately 45% of the estimated human red blood cells, red blood cells of nutritional value may talk to animals of other organizations. Blood in the remaining 55% is plasma. Plasma in approximately 8% of protein, minerals, glucose, free fatty acids, and so on a small number of components, the other 92% is water. And compared to other conventional food, the iron content in the blood of teach high. The food and nutrition knowledge, no single food provides all the nutrients the body needs, that is, only drink blood, will certainly be a lack of certain nutrients.

Then, the "Vampire" a day to absorb the number of blood can sustain life? take a look at protein.

1 l-plasma contains 900 910 g water, 65-85 grams of protein and 20 grams of low molecular substances, low molecular weight materials in a variety of electrolyte and organic compounds. Blood itself is a kind of high nutritional substances, the blood of the main raw material required for a protein, carbohydrate, iron, copper, folic acid, vitamin C, vitamin B12, as well as a variety of trace elements and substances such as hormones. Our recommendation of the nutrition society, my adult residents daily recommended intake of protein (RNI) respectively male and female light manual workers 75g, 65g, intermediate physical laborers 80g, 70g, heavy manual laborer 90g, 80g. Adult about 5 litres of blood, so that one person's entire supply of blood to approximately 5 business days required protein.

Look at the calories.

No one has studied the digested human blood can produce and how many calories, but scientists have studied the pig blood values: calories per 100 g pork blood containing 55 kcal calorie. According to Chinesenutriological society recommended daily dietary energy supply in the adult male very light labor day 2400 kcal calorie intake should be. Therefore, a male "Vampire" a day at least to drink 4 liter pig blood to maintain minimum thermal requirements.

Therefore, the vampire to sustain life, one day is going to kill a man; the cost is too high.

It is worth noting that the protein content in the blood, but a high carbohydrate content is very low and therefore heat low, unless you can guarantee that a large number of blood supply, blood-sucking vampire is not possible for a living.

Animal

Vampire bats are "gentleman"

We know that some animals to feed on blood.

Chinese Academy of Sciences, Institute of Zoology doctoral student Zhang Jin-Suk, many invertebrates to vampire-dependent, such as mosquitoes and leeches. Vertebrates living with blood-sucking. Such as Darwin had studied in Galapagos land bird, in recent years to differentiate a subspecies of the vampire. Speaking of vampire bats, 1200 species of bats, only 3 is a vampire. These three are blood-sucking bats in South America, are ye Kou bat branch vampire bats subfamily. Interestingly, there is a so-called "false vampire bat", which is actually a small animals to eat meat, on birds, other bat and mouse for a living, my tongue often have blood, be mistaken for vampire bats.

Known 3 vampire bats are the common vampire bat, wool white vampire bats leg and wing vampire bats.

The latter two primarily attracts birds of blood, relatively rare, and the common vampire bat in South America most districts have distribution and suck the blood of large mammals, including humans. In South America, many people do not notice that sleep is vampire bat attacks. Vampire bats about 40 grams of weight, a maximum blood-sucking 20 g. Mankind lost so much blood was not a priority. However, frightening is the bat's mouth may have a large number of bacteriaand viruses,Including the rabies virus. Of course, they also have the benefit of mankind. Vampire bats of saliva contains anesthetics and resistance to blood agent, now scientists have begun to study the vampire bat saliva may thus can be made into new drugs against thrombosis.

Vampire bats are the most well-known vampire animal.

In addition to the common vampire bat, there are two species of bats, by blood-sucking.

In fact, the vampire bat is not cruel clones, it's still very loving breed.

In vampire bat groups, if a vampire bat stomach empty, you can add another fluttering, full of blood-sucking bats will spit out to the hungry peer. Scientific research has shown that vampire bat first consider the spit to feed a relationship similar, secondly consider "good friends". The so-called "good friends" is used to spit blood to his eating a companion, or on their own pay positive return Companion. Scientists believe that "social" and "credit" is the origin of the moral sense, the vampire bat is a vivid example.

History

The hunt for "Vampire" was once popular

Early this year, Italy forensic anthropologists in Venice near an island discovered the remains of a special.

Dead man's mouth stuffed with a brick. Qualified, with remains of a 15th century was executed "Vampire". Found locations are 1468, when the black death pandemic "mess of a buried bury gangzi", 1500 deceased.

In Venice, on the outskirts of mouth stuffed with bricks of bones, this practice is considered and the legend of the "Vampire".

Florence University Porini (MatteoBorrini) that this remains the owner of a black patients: "the black death of victims mouth often drop out of the blood, which probably is to let people think ' Vampire '.

" When people think" vampires "in the body of the underground attracts other blood to resurrect the ground harm, so will the" it "mouth hardwith a big brick, not only the fortress live" it "in the mouth, but also to pulverize the" it "teeth," it "can't suck blood.

In the 18th century 20 s, Serbia has two famous "Vampire".

In the first incident, the 62-year-old man in the high mijovic (PeterPlogojowitz) was buried and then went home to his son to eat, the son is not for him. The next day, was found dead in General an old man's exposed, and later died of blood loss with neighbors, people think it is formed of vampire ascribes General old man; in the second incident, allegedly had bitten by vampire veterans Bob Le (Paole) in mowing time of death, then o Opera have died. From this "wild hunting vampires". Some people live as a vampire to death, while the "Vampire Hunter" break up a large amount of the grave, the damage is considered to be the body of the "Vampire". In northern Russia and Germany, people will Pierce could become the heart of the vampire's body, which is dealing with "intumescent vampire" is the best way; in Western Serbia, people will be the body's head cut down and in between his legs, buttocks or also find below buries, so it's "soul" and "body" can not be combined again. In Romania, it will be considered to be the body of the "Vampire" mouth with garlic.

In modern times, some people believe that the vampires exist, in the West there are many "Vampire Hunter" societies, but they mostly just for social purposes.

New thematic interviews/reporter Liu Zheng interns Ding Kai

The picture of the topic are information pictures

This special appreciated:

Cloud Centerless (United States of food engineering, Purdue University)

Zhang Jin-Suk (zhongkeyuandongwuyanjiusuo doctoral)