Phenotiazine derivatives: general description, physical and chemical properties. Classification of drugs. Brief description of the main groups and typical representatives. Diseases for which these drugs are used. Contraindications and side effects. Pharmacokinetics. Last modified: 2025-06-01 07:06
Science
In heraldry, there are nine generally accepted forms of emblems. In addition, armorial shields are decorated with many figures and decorative elements. Last modified: 2025-01-23 12:01
Today, perhaps, you will not meet a person who does not know what pheromones are. Perfume with pheromones, the "aroma of seduction" and the smell of love are terms widely used by marketers and advertisers. The olfactory system, which is responsible for the recognition of volatile chemosignals associated with sexual and maternal instincts, controls neuroendocrine and behavioral reactions, is called vomeronasal. Last modified: 2025-01-23 12:01
Under normal conditions, when it enters the body, alcohol quickly decomposes into metabolites (non-toxic metabolic products). When drinking alcohol while taking a number of drugs, there are quite serious consequences. These include disulfiram-like reactions. Last modified: 2025-01-23 12:01
Each nation has its own characteristics, by which you can easily determine its belonging to a particular group. For example, the Irish are distinguished by red hair, and the British by a dryish physique and small features. But the Japanese stand out from other Asians with their small stature and weight. Have you ever wondered why the average height of the Japanese does not exceed 165 centimeters? What is the secret of their diminutiveness?. Last modified: 2025-01-23 12:01
Figuratively, economics as a science is characterized by ancient Greek origin, since many disciplines originated during this period. The term itself is obtained by combining two words. Translated into Russian, the first of them means "economy", and the second - "law". Thus, this concept implies the art of housekeeping. Last modified: 2025-01-23 12:01
The holographic image is increasingly used today. Some even believe that it may eventually replace the means of communication known to us. Like it or not, but now it is actively used in a variety of industries. For example, we are all familiar with holographic stickers. Last modified: 2025-01-23 12:01
The International Space Station is one of the most amazing man-made objects in the history of mankind, which is discussed in detail in this article. Last modified: 2025-01-23 12:01
The grandson of a peasant, who became a professor at the Sorbonne, the author of 50 fundamental works on sociology and philosophy that influenced the minds of the most prominent intellectuals of the whole world, the most witty and original writer, a photographer whose work is admired by professionals - how much can a human life contain?. Last modified: 2025-01-23 12:01
The article is devoted to soil horizons. The main layers of soils that arise in the process of soil formation are considered. Last modified: 2025-01-23 12:01
Ask anyone you know: "Which animals first flew around the moon?" A person who can give the correct answer to this question will have to be carefully looked for. Last modified: 2025-01-23 12:01
The crust of our planet consists of the so-called platforms (relatively homogeneous, stable blocks) and folded zones, which differ from each other in age. If you look at the tectonic map of the world, you can see that the folding areas occupy no more than 20% of the Earth's surface. What is Hercynian folding? What is its time frame? And what mountain systems were formed in this era of tectogenesis? Our article will tell about it. Last modified: 2025-01-23 12:01
Nature, given to man, decorates our life. Thanks to her, a person survives, and also dies. In this article, you will learn about various elements, about inanimate nature, about everything that should be protected, appreciated and honored. Last modified: 2025-01-23 12:01
Many people are interested in dispersing clouds. Indeed, a very interesting topic. How are they dispersed? How much money is spent on this? In general, it is worth noting that you really have to spend a lot. This pleasure is now very expensive. So, one of the last holidays cost the Russian government 430 thousand rubles. This is a very large amount. Many consider it a waste of money. But it's interesting anyway. How to disperse clouds?. Last modified: 2025-01-23 12:01
During the period of development of human civilization, important documents containing a lot of valuable information have accumulated enough. They are studied by paleography. This is a discipline that comprehends the secrets of handwritten historical monuments in terms of graphics and writing methods. Last modified: 2025-01-23 12:01
Climatic chambers heat-cold-moisture (TCW) are designed to create special conditions that are closest to natural. However, outdated units did not give the desired result, so you had to constantly use additional equipment. Previously, this whole process took a lot of time and effort and did not always end successfully. But since the advent of improved models, the general situation has undergone dramatic changes. Last modified: 2025-01-23 12:01
The greatest insights in biology of the 19th-20th centuries are considered to be the works of Charles Darwin on evolution, Gregor Mendel on heredity and variability, and Thomas Hunt Morgan on genes and chromosomes. Last modified: 2025-01-23 12:01
There are thousands of varieties of stones on Earth. And without a doubt, these are the most common formations on the planet, because the Earth itself is a stone covered with a thin layer of soil. Rocks, as we also call them, are completely diverse in their characteristics, composition, value, but above all - density. This is simply an indispensable material used in all kinds of construction when choosing the right stone. Density then becomes a fundamental criterion. Last modified: 2025-01-23 12:01
The article tells about the basic properties of the fabric, what is hygroscopicity and what it depends on. In addition, you will learn how the ability of a material to absorb moisture is determined in the laboratory. Last modified: 2025-01-23 12:01
The unit of the evolutionary process is the population. Characterization of population and species as units of evolution. The main provisions of the evolutionary doctrine according to Darwin. The history of the development of evolutionary doctrine. Last modified: 2025-01-23 12:01
Manganese is a chemical element: electronic structure, history of discovery. Physical and chemical properties, production, applications. Interesting element details. Last modified: 2025-01-23 12:01
Carboxylic acids: physical properties, chemical properties, history of discovery and study. Obtaining in the laboratory and industry, reaction equations. The main compounds of carboxylic acids: soaps and esters. Characteristics of acetic and formic acids. Last modified: 2025-01-23 12:01
What is the reason for the infertility of interspecific hybrids? Methods for solving such a problem. General concept of types and types of crossing, characteristics of first generation hybrids. Interspecific hybrids, their features and examples. Last modified: 2025-01-23 12:01
Hydrocarbons are a very large class of organic compounds. They include several main groups of substances, among which almost every one is widely used in industry, everyday life, and nature. Of particular importance are halogenated hydrocarbons, which will be discussed in the article. Last modified: 2025-01-23 12:01
Achievements of population genetics, its massive theoretical substantiation of all natural processes occurring in habitats, allow people to use this knowledge in their own needs. So, phenomena such as inbreeding and outbreeding are very common. A more familiar synonymous concept for these terms is incest. What are these processes from a scientific point of view and what a person can achieve using them, we will analyze in this article. Last modified: 2025-01-23 12:01
It's amazing how many interesting facts about metals exist! They are one of the most common and frequently used resources that find themselves in completely different areas. An infinitely wide range of possibilities for their application, the need for which manifests itself both in everyday life and in the industrial field. You can tell a lot of interesting things about each element, but now I would like to pay attention to only a few of them. Last modified: 2025-01-23 12:01
Cesium is an important raw material for the production of special optical devices, lamps with unique properties and other high-tech products. At the same time, softness is not its most demanded quality. Last modified: 2025-01-23 12:01
The name of this mineral comes from the Greek word "sphaleros", which means "deceptive". Who and how this stone is trying to deceive - read in our article. In addition, from it you will learn about the main physical and chemical properties of the sphalerite mineral, as well as in which areas of modern industry it is used. Last modified: 2025-01-23 12:01
Radioactive radiation poses a threat to living organisms. High doses of radiation lead to severe illness and even death. Therefore, in many situations it is necessary to measure the radiation background of the area or premises. A device for measuring radiation levels is called a dosimeter. Last modified: 2025-01-23 12:01
Copper pyrite is used in various industries. Let's analyze its presence in nature, application. Last modified: 2025-01-23 12:01
Spontaneous combustion is a phenomenon in which a person ignites without an external source of fire. This is a paranormal phenomenon, unproven by scientists. Some sources say that after spontaneous combustion, a pile of ash remains, others claim that some parts of the body and whole clothes remain. Eyewitnesses prove that a flame literally bursts out of a person’s mouth, and the torso and head are charred to ashes in a matter of minutes. Some say the flame is blue, others say it's yellow. Last modified: 2025-01-23 12:01
Biology of the cell in general terms is known to everyone from the school curriculum. We invite you to remember what you once studied, as well as discover something new about it. The name "cell" was proposed as early as 1665 by the Englishman R. Hooke. However, it was only in the 19th century that it began to be studied systematically. Last modified: 2025-01-23 12:01
Everyone who is looking for the Bermuda Triangle on the map will be disappointed: there is no clear location and no boundaries. It is known that the most mysterious site in the world is located next to the islands from which it got its name. Last modified: 2025-01-23 12:01
There are thousands of named reactions in chemistry, but most of them won't tell a layman anything. But there is one reaction with which everyone is perfectly familiar - this is the Maillard reaction. We encounter it when we drink aromatic coffee, eat freshly baked bread and fried steak. And even when we drink beer with friends. Maillard's chemical reaction is the most "tasty" and it is she who makes the food fragrant and beautiful. And although she surrounds us everywhere - the formation of humus, peat, therapeutic mud - we will talk about her magic in the kitchen. Last modified: 2025-01-23 12:01
Erlich Paul is a world famous German scientist and physician who received the Nobel Prize in 1908 for his work in the field of immunology. He was also a chemist and bacteriologist. Became the founder of chemotherapy. Last modified: 2025-01-23 12:01
What is technology? What is meant by development? What types of technologies exist? Where are they applied?. Last modified: 2025-01-23 12:01
Biography of the famous primatologist of the last century. Jane Goodall's research and discoveries on the wild life of chimpanzees. Last modified: 2025-01-23 12:01
The biography of Miklouho-Maclay does not just tell the insipid story of a person's life, but captures and does not let go until the last lines. No wonder this famous traveler often became a guest of the emperor's family, to whom he told interesting stories about the Papuans. Last modified: 2025-01-23 12:01
Schmidt Otto Yulievich is an outstanding explorer of the North, a Soviet astronomer and mathematician, statesman and public figure, Hero of the Soviet Union, who has achieved world recognition in the scientific field. Last modified: 2025-01-23 12:01
Herpetology is the science that studies reptiles. It also includes batrachology - the study of amphibians. Science explores the structure, habits, features of the development of reptiles and amphibians. Last modified: 2025-01-23 12:01