Free technical library. Articles from Sam magazine, 2008

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Alphabetical list articles with abstracts, from journals published in 2008 in the journal Sam:

Hanger for every taste

Hanger-dryer

The return of the Russian stove

Home mini-bureau in the door niche

Refinement of the SUV

Wood in the interior of the bathroom

If metal attracts

Once again about Vetonite

Jardiniere-transformer

Coffee table

buried greenhouse

Clips and clamps

Cleaning device on a drilling machine

Metal corrosion protection

Noise protection

Bright light protection

Plumbing installation

History of one restoration

Uninterrupted power supply unit

How to make a chain link

How do I choose a welding machine

rocking snail

Masonry with wild stone

We glue the screen-partition

Forged lanterns

Forged openwork

Carpets

Some of the secrets of the chair

Well with a gate

Switch rack

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Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

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Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

Nerve cells still regenerate 13.10.2018

The study of neurogenesis (the formation of new nerve cells - neurons) is a relatively new area of research. In recent years, scientists have proven that new neurons are formed throughout life in the brain of many mammals, but there is still no consensus in the scientific community on the issue of human neurogenesis.

New imaging techniques (such as confocal microscopy) have shown that, at least before puberty, new neurons form in the human hippocampus, a region of the brain involved in the formation of emotions and memory. But data on neurogenesis in adults is conflicting; More recently, a study was published stating that the formation of new cells in the adult brain does not occur, but scientists have proven the opposite. The new data could help develop drugs for neurodegenerative diseases such as Alzheimer's, scientists say.

Maura Boldrini, a neuroscientist at Columbia University, and her colleagues took tissue samples from the hippocampus of 28 healthy people who had died no more than a few hours before. The age of these people at the time of death ranged from 14 to 79 years. Scientists have established the rate at which new blood cells and neurons of the dentate fascia of the hippocampus, the part of the brain where neurogenesis occurs, were formed in the body of the deceased during life.

Boldrini and her colleagues found that the number of "mother" cells decreases with age, while "daughter" cells do not. Scientists found thousands of young, incompletely formed neurons in the dentate gyrus in all samples, regardless of the age of the people from whom the samples were taken. However, the older the person, the less cells in the dentate fascia that produce substances that are associated with the ability of the brain to rebuild existing neural connections and form new ones (neuroplasticity). "New neurons that appear in adulthood may form fewer connections with each other and other neurons, or migrate to other parts of the brain less frequently," the scientists conclude.

The loss of neuroplasticity may explain the emotional vulnerability that some people experience in adulthood, but new brain cells, including neurons, are still able to withstand the decline in cognitive skills, the authors of the new work say. Now scientists plan to find out at what rate young neurons are formed in people suffering from Alzheimer's disease and emotional problems.

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