当前位置: 首页 > 知识库

What Is Cryonics?

来源:四库百科 时间 : 2021-05-08 12:20:53 属于:Did You Know

Cryonics is the preservation of organic tissue by keeping it under freezing temperatures, typically below -196°C, in a controlled environment. This is achieved by storing the body in an air-tight container filled with liquid nitrogen. The extremely low temperatures freeze the extracellular water, with the water inside the cell being absorbed through osmosis and causing the cells to become dehydrated and making the tissue less susceptible to decomposition. Modern technology doesn’t make it possible for the preserved tissue/body to be revived. Therefore, the preservation of the body is done in the hope that future technology will make it possible to revive the preserved organic tissue. Futurists were the first group of people to embrace cryonics fully and represent the largest group of people with bodies or organs currently under cryonic preservation.

History of Cryonics

Since prehistoric times, one of the most popular ways of preserving meat has been freezing it. Ancient humans used ice and snow to freeze their meat, preventing it from decomposing and hence extending its shelf life. Modern technology brought refrigerators and freezers that use the same process to store perishable foods. 20th-century scientists had to tap into this ancient knowledge to come up with cryonics. One problem scientists frequently faced was the storage of transferrable organs, as the medical technology of the time was inefficient in tissue preservation. Cryopreservation was introduced to the world in 1967 with the preservation of Dr. James Bedford’s body.

Controversial Issues

The science of cryonics has been a controversial topic since its introduction in the 20th century. First is the morality of the whole process. Religion has for the longest time been at loggerheads with the scientific community, and cryonics does not make the situation better. Religious leaders have been vocal in their displeasure with the process, which defies their most crucial belief; the transition of the body into the afterlife. Another issue is the fact that the revival of the preserved organic tissue is purely dependent on future advancements in medical technology and nanotechnology in particular. Another problem arising from cryonics is the fact that modern medical technology does not make it possible for scientists to assess whether the tissue under preservation has experienced any substantial or irreversible damage. Another contentious issue is the astronomical cost that the procedure requires. The average cryopreservation procedure involving preservation of the whole body costs between $28,000 and $200,000 in the four existing facilities around the world.

The Demand

There are four cryopreservation facilities around the world; one in Russia and three situated in the US. However, these facilities cannot meet the demand for the procedure. It is estimated that about 250 human bodies are under cryopreservation and an additional 1,500 people have expressed their interest to have their bodies under cryopreservation after being established to be legally dead.

热门推荐
  • 生活常识
  • 家务日常
  • 习俗礼仪
  • 舌尖美食
  • 经典国学
最新发布
冷串串和钵钵鸡一样吗
冷串串和钵钵鸡一样吗
冷串串和钵钵鸡不一样,区别表现在原料、口味以及食用方法上,冷串串原料丰富,既有蔬菜也有肉食,多为红油口味,食用时蘸上调料即
普通锁没有钥匙怎么开
普通锁没有钥匙怎么开
在没有钥匙的前提下,想将普通锁打开,可以使用回形针、塑料片处理,准备两根回形针,一根掰直以4:6的比例折叠,另一根掰直一个角后
寒天粉是什么东西
寒天粉是什么东西
寒天粉是一种多糖物质,是将紫菜、石花菜、江蓠菜使用科学的方法提炼制成的物质,寒天粉一般被用作于食品添加剂,因为其本身的
干饭人口号
干饭人口号
干饭人口号有很多,常见的有“没有难吃的食物只有坚强的干饭人”、“干饭人,干饭魂,干饭人吃饭得用盆”
萝卜怎么保存时间长不糠
萝卜怎么保存时间长不糠
萝卜长时间保存不糠需要低温环境,将萝卜存放的环境保持在0到10度之间,即可使萝卜处于休眠状态,或者将萝卜茎叶全部去除,然后使
口菇内部发黑还能吃吗
口菇内部发黑还能吃吗
口菇内部发黑不能吃,口菇发黑后说明内部已经滋生大量的和有害物质,继续食用会影响人体健康,口菇需要放入保鲜袋中,然后放置冰
狐狸毛和貉子毛区别
狐狸毛和貉子毛区别
狐狸毛和貉子毛的区别表现在手感、价格、用途上,狐狸毛手感较为柔软、毛色呈现红褐色或者白色,价格较高,常用于制作装饰或者
冬季卧室湿度多少合适
冬季卧室湿度多少合适
冬季卧室湿度为百分之五十合适,此时的湿度不会导致家具、环境潮湿,也不会让人体出现不适的感觉,想将室内的湿度提高,可以在家
山药削皮了能放多久
山药削皮了能放多久
山药削皮了以后,能放一天的时间,一天后山药就会氧化,导致果肉呈现黑色,无法继续食用,而且食用山药的过程中,不要吃荞麦、鹿肉以
鹿邑县属于哪个市
鹿邑县属于哪个市
鹿邑县属于河南省周口县,位于豫东平原东部,它是连接中原经济区和皖江经济带、长三角的枢纽。而鹿邑县在古代也被称为鸣鹿、