This article describes the function and structure of the intestine, its diseases are considered. And also here you can find out the answer to the question: how long is the intestine in an adult?
Science 2024, November
Sir Andrey Konstantinovich Geim is a Fellow of the Royal Society, fellow of the University of Manchester and a Russian-born British-Dutch physicist. Together with Konstantin Novoselov, he was awarded the Nobel Prize in Physics in 2010 for his work on graphene. He is currently Regius Professor and Director of the Center for MesoScience and Nanotechnology at the University of Manchester
When theories of evolution appeared, suggesting the initial link in the origin of Homo sapiens in primates, they were met with incredulity, and more often with hostility. Ancient monkeys, located at the very beginning of the pedigree of some English lord, were perceived at best with humor. Today, science has identified the direct ancestors of our species, who lived more than 25 million years ago
The skeletons of different animals are different from each other. Their structure largely depends on the habitat and lifestyle of a particular organism. What do animal skeletons have in common? What differences exist? How is the human skeleton different from the structure of other mammals?
The magnetic moment of an atom is the main physical vector quantity that characterizes the magnetic properties of any substance. The source of the formation of magnetism, according to the classical electromagnetic theory, are microcurrents arising from the movement of an electron in orbit. The magnetic moment is an indispensable property of all elementary particles, nuclei, atomic electron shells and molecules without exception
Whoever invented the telescope undoubtedly deserves respect and great gratitude from all modern astronomers. This is one of the greatest discoveries in history. The telescope made it possible to study near space and learn a lot about the structure of the universe
This story begins back in 1969. The workers of the coal mine near the village of Rzhavchik, Tisulsky district, began their working day as usual. Until one of the miners noticed something unusual in the middle of the seam. It turned out to be a sarcophagus made of a material similar to marble
Water. It's such a common liquid. We do not think about the number of its species and the properties of this amazing substance. How important is the density of water, what features does it show and what does it depend on
And secondly, the Adam's apple is sometimes found in women, and in some ladies its size is in no way inferior to men's. Let's try to find out why a person needs it at all, where did the female's Adam's apple go and why is it sometimes still visible
Birds are the largest group of vertebrates. They are common in all ecosystems of our planet and even inhabit certain parts of Antarctica. What is the structure of the nervous system and sensory organs of birds? What are their features? How is the nervous system of birds different from the nervous system of reptiles?
When choosing amplifiers, monitors and similar equipment, an inexperienced person is often guided by such indicators as power and frequency response. More savvy people are interested in the value of the coefficient of harmonic presentations. And only the most knowledgeable mention intermodulation distortion. Although their detrimental effect is the largest among all those listed. In addition, they are very difficult to measure and define
Science is considered as a holistic, developing system that has its own foundations, has its own ideals and norms of research. These characteristics are characteristic of science not only as a specific form of activity, but also as a set of disciplinary knowledge, and as a social institution. Despite the deep specialization of modern science, all scientific knowledge meets certain standards and is based on common grounds
Craters on the Moon are so numerous that they literally clog each other. Today we can confidently consider only a few of them, the largest
Aleksey Lykov: a brief biography of the scientist, his origin and family. Discoveries and scientific developments. The contribution of A. V. Lykov to science and his pedagogical activity. The awards and titles he received. The main postulates of the Ph.D. thesis
The phrase "theory of relativity" is now on the buzz thanks to popular science articles and science fiction films. Time paradoxes, curvature of space… Can a theory from the last century really explain all this?
The entire autonomic nervous system (sympathetic, parasympathetic, metasympathetic divisions) is designed to control homeostasis, that is, the constancy of the internal environment. The metasympathetic division of the nervous system is an important and integral part of the entire network. The nerve plexuses of the metasympathetic network lie inside the hollow organs
Matter consists of molecules, molecules of atoms. How can you calculate the mass of atoms? Scientists have determined that the relative atomic mass (mass of an atom) of an element is the mass of the atom in carbon units. How this value was determined - we learn from the article
Food additives have long been an integral part of food production. Without them, it is difficult to imagine what you can buy in a regular store, and then serve it to the table. Everything that is in one way or another connected with human nutrition must undergo multi-level safety checks, and even better if the supplement will have any positive effect. One of these substances is sodium ascorbate: an antioxidant s alt with vitamin properties
Quantum engine… The concept that disturbed and worries many scientific minds, and the thoughts of ordinary people. Probably everyone has heard about this scientific phenomenon. And for those who have not heard, the article will describe the main facts from the history
Physical devices surround us everywhere and even in the most unexpected places. Even at home, you can find many measuring tools. So what is it?
The article is devoted to the idea generation method called synectics. The features of this technique, its essence and the procedure for carrying out
People have long been accustomed to the existence of a diverse animal and plant world on land. What do we know about life in the ocean? How diverse is it? Who, besides commercial fish, can be found in its waters? Let's find answers to these questions together
Probably few people do not know that touch is a feeling that we feel when one or another part of the body touches the surface. Thanks to this feeling, we can say with closed eyes that we are holding in our hands, velvet or cotton, wood or iron. But not everyone knows what types of touch exist, when and how to develop it
The Babylonian number system, which arose thousands of years before the advent of a new era, was the beginning of the beginning of mathematics. Despite its ancient age, it succumbed to deciphering and revealed to researchers many secrets of the Ancient East. We, too, will now plunge into the past and find out how the ancients believed
System - what is it? This word of foreign origin is ambiguous and is used in various areas of life. For example, it is used in mathematics, technology, geology, everyday life. Information that this is a system will be presented in the article
A. A. Reformatsky is a famous domestic linguist, professor. In 1962, for his work, he was awarded the degree of Doctor of Philology, even without defending a dissertation. One of the most famous and influential representatives of the Moscow phonological school. He was considered an expert in spelling and graphics, semiotics, the history of linguistics, terminology and many other related fields
A planet is, in the understanding of Ancient Greece, any object moving in the sky. Since antiquity, our knowledge of the cosmos has expanded significantly, and therefore such a use of the term would introduce confusion into voluminous works on the universe. The discovery of a number of new objects led to the need to revise and consolidate the definition of the planet, which was done in 2006
Sir James Chadwick is an English physicist, Nobel laureate, who became famous after the discovery of the neutron. This radically changed the physics of that time and allowed scientists to create new elements, and also led to the discovery of nuclear fission and its use for military and civilian purposes. Chadwick was part of a group of British scientists who helped the US develop the atomic bomb during World War II
The largest American sociologist Robert King Merton (1910-2003) believed that the search for a universal social theory is meaningless. And such a theory will be consigned to oblivion, like numerous comprehensive philosophical systems of previous eras
In the structure of the human body, it is possible to distinguish areas in which parts of various physiological systems are located, united by common anatomical and physiological features. These include, for example, the throat - an area in which there are elements of two systems - the respiratory and digestive
Innovation is an economic science that studies the patterns of innovative changes in macro- and microeconomic systems. The subject of the study of innovation are: innovations (innovations), innovations (innovations), innovation processes
Mankind knows quite a lot about water. But scientists continue to make amazing discoveries, find its new wonderful properties. In the article we will analyze one of these noteworthy studies. It is devoted to answering the question, what is the ORP of water. We will also consider the characteristics of a liquid with positive and negative potentials, we will figure out what is hidden under the abbreviation
What is an invention? Is it creativity, science or chance? In fact, it is different. About the essence of the concept, as well as where and how inventions were made, read further in the article
Our planet is densely populated by animals of different classes, orders and species. Scientists study their structure and functional significance of individual organs. Read about the heart of amphibians and reptiles in the article
The level of illumination is considered a very important indicator of the microclimate of the room, its determination is necessary both in residential buildings and in office buildings. This is also important in livestock and poultry farms
How much does air weigh? This question is not without meaning when it comes to weight in the context of chemical reactions and calculations. Usually chemists operate with the molar mass of air. What is it and how did scientists manage to weigh the air?
All matter in our world is formed by vibrations of strings and branes. A natural consequence of superstring theory is the concept of gravity. That is why scientists believe that it contains the key to uniting all known forces
After reading this article, you will learn what cultural studies are, what this science studies, what varieties of it stand out and what other disciplines it interacts with. We will consider all this in detail. First of all, we should decide on the meaning of the concept we are interested in
Purine bases: description of substances and their properties, the process of formation in the human body. Functions of purine bases, participation in biological processes. Pathologies associated with metabolic disorders. The most common compounds of this class. Foods Containing These Purine Bases
A macromolecule is a macromolecular compound that is important for the life of organisms. Let's analyze the features of the structures of macromolecules, their configurations, applications