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In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers.
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Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>
Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research - Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows you to monitor both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. "By assessing target pests at the right time, we can take necessary measures to control both insect pests and diseases," says Kapil Kumar Sharma, lead researcher on this study. ... >>
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A polymer that responds to mechanical stress like a muscle
12.02.2021
Scientists have created segmented polyurethane elastomers with mechanochromic and self-reinforcing features. The development is useful for intuitive damage detection and the creation of adaptive materials.
An important ability of such a biological tissue as muscles is self-healing and self-reinforcing. It occurs in response to damage caused by external forces. Most artificial polymers break down irreversibly when subjected to sufficient mechanical stress. This makes them less useful for, for example, the production of artificial organs. But what if you could create polymers that react chemically to mechanical stress and use that energy to improve their properties?
A team of scientists from Tokyo Institute of Technology, Yamagata University and Sagami Institute of Chemical Research, Japan, has made significant progress in the field of bulk self-reinforcing substances. Their new polymer reacts to mechanical stress almost like a muscle.
Segmented polyurethanes (SPUs) containing difluorenylsuccinonitrile (DFSN) fragments and methacryloyl groups have been synthesized. The resulting elastomers formed pink cyanofluorene radicals and changed color when compressed or stretched. This is the first example of crosslinking reactions under force, achieved only by stretching or compressing the bulk film. Credit: Tokyo Tech
The team created segmented polyurethane polymer chains with hard and soft functional segments. The soft segments contain DFSN molecules acting as their "weakest link", with both halves connected by a single covalent bond. The side chains of the soft segments end in methacryloyl units. When the polymer is subjected to mechanical stress, such as simple compression or stretching, the DFSN molecule splits into two equal cyanofluorene (CF) radicals. These CF radicals, unlike DFSN, turn pink, making it easy to visually detect damage.
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