https://phys.org/ en-us Latest news from RUDN University One of the features of 5G networks is so-called slicing, which is segmentation of the network. Physically, the network remains the same but is logically divided into slices depending on current requests. This approach guarantees a given level of signal quality. Resources are allocated dynamically to a specific segment: If some resources are not currently being used, they can be redirected to another segment. https://techxplore.com/news/2024-02-mathematicians-algorithm-5g-network-slicing.html Internet Wed, 14 Feb 2024 16:38:03 EST news627151081 Future technologies rely on phenomena that were previously considered the exclusive domain of theoretical physics or chemistry. For example, the approach to devices with high-density information storage arose when chemists discovered single-molecule magnets—unusual complexes of transition metals and lanthanides. In addition, several lanthanide compounds exhibit temperature-dependent luminescence properties. https://phys.org/news/2024-02-chemists-emission-molecular-thermometer.html Analytical Chemistry Mon, 12 Feb 2024 15:40:01 EST news626974372 To determine pathological changes in tissues, immunohistochemical studies are used. This is a microscopic examination, for which a thin histological section is made, which is treated with a special substance—an antibody. It interacts with the desired substance in the tissue—for example, protein—and colors it. https://medicalxpress.com/news/2024-02-automatic-score-histological-artificial-intelligence.html Radiology & Imaging Mon, 05 Feb 2024 12:26:03 EST news626358362 Mathematicians from RUDN University have proposed a system that helps to use energy more efficiently. It is based on the Internet of Things and the digital twin of the household. The neural network optimally distributes tasks and decides how to divide energy between devices. The study is published in Sensors. https://techxplore.com/news/2024-01-iot-household-energy.html Energy & Green Tech Wed, 31 Jan 2024 16:28:02 EST news625940881 Mathematicians from RUDN University have created a new routing algorithm in the Internet of Things network. It optimally splits traffic, which improves network speed and reliability. The results were published in Mathematics. https://phys.org/news/2024-01-mathematicians-algorithm-iot-optimal-traffic.html Mathematics Wed, 31 Jan 2024 16:25:02 EST news625940701 The expansion of the universe at some stage of evolution is well described by the Friedmann model. It was derived from general relativity a hundred years ago, but it is still considered one of the most important and relevant cosmological models. https://phys.org/news/2024-01-astrophysicists-theoretical-proof-traversable-wormholes.html General Physics Mon, 22 Jan 2024 13:05:23 EST news625151121 Brain injuries cause widespread damage to brain tissue. Damaged cells begin to produce signaling molecules that trigger processes of inflammation, apoptosis—programmed cell death—and oxidative stress. After the acute phase (about a day), chronic neuroinflammation occurs. It can last a long time and cause secondary damage with negative consequences, including behavioral and cognitive dysfunction. https://medicalxpress.com/news/2024-01-consequences-brain-injuries-nasally-stem.html Neuroscience Thu, 18 Jan 2024 11:28:02 EST news624799681 RUDN University scientists have discovered that in weightlessness, the contractile activity of smooth muscles in the hollow organs of the gastrointestinal tract is disrupted. New data must be taken into account when planning long-term space missions. The results were published in the International Journal of Molecular Sciences. https://medicalxpress.com/news/2024-01-scientists-smooth-muscles-digestive-sensitive.html Medical research Tue, 16 Jan 2024 17:22:04 EST news624648121 Researchers from RUDN University have proposed a new scheme for the Internet of Things network. It uses flying drones that process data instead of cloud data centers, which speeds up the network. The results were published in Drones. https://techxplore.com/news/2024-01-scheme-internet-fog.html Internet Tue, 16 Jan 2024 14:38:24 EST news624638302 Future generation networks must provide high transmission speeds and flexible coverage. One way to do this is through networks of unmanned aerial vehicles, or drones. They operate in the millimeter wave range. But the use of a wide range of antennas and higher losses during signal propagation are disadvantages. All this requires energy, and drone batteries have limited capacity. https://techxplore.com/news/2024-01-artificial-neural-network-drones-optimize.html Robotics Tue, 16 Jan 2024 14:31:03 EST news624637862 A modern alternative to chemotherapy and radiotherapy is photodynamic therapy. It is used to treat cancer, skin diseases, and infectious diseases. The essence of the method is that light-sensitive substances are introduced into the blood, which accumulate in the affected tissues. They are then irradiated with light of the desired wavelength and intensity. https://phys.org/news/2024-01-chemists-potential-drug-photodynamic-cancer.html Biochemistry Tue, 16 Jan 2024 14:00:01 EST news624632907 The demand for high-quality wireless communications is growing along with the number of applications and devices. One way to provide such a network is to use a system of drone routers. Such a system would be useful, for example, in situations where it is necessary to quickly and simultaneously provide a signal to a large area—during natural disasters, large-scale incidents, and public events. https://techxplore.com/news/2024-01-energy-efficiency-wi-fi-networks.html Telecom Tue, 16 Jan 2024 13:51:01 EST news624635459 If the oxygen level in organs and tissues falls below normal, hypoxia occurs. Then the body launches defensive responses. In many ways, they coincide and overlap with the response to inflammation, because this process is accompanied by local hypoxia. https://medicalxpress.com/news/2024-01-personalized-treatment-inflammation-sensitivity-hypoxia.html Immunology Tue, 16 Jan 2024 13:27:03 EST news624634022 Many people consider hookah smoking to be less dangerous than smoking regular cigarettes. Yet hookah smoke is known to contain carcinogens, heavy metals, and other compounds that cause inflammation and oxidative stress that damage cells. https://medicalxpress.com/news/2024-01-green-tea-mitigate-hookah-mouse.html Medical research Tue, 16 Jan 2024 13:25:03 EST news624633901 Engineering structures made of concrete, steel, or other materials are subject to vibrations and stress. Because of this, small cracks appear, which grow and eventually lead to destruction. This phenomenon is called "fatigue failure." https://phys.org/news/2024-01-concrete-stronger-durable-resin.html Polymers Tue, 16 Jan 2024 13:22:03 EST news624633722 Mathematicians from RUDN University have built a neural network that recognizes breast cancer on histological samples with almost 100% accuracy. This was achieved with the help of a module, which "sharpened the attention" of the model. The results were published in Life. https://medicalxpress.com/news/2024-01-mathematicians-attentive-neural-network-breast.html Oncology & Cancer Tue, 16 Jan 2024 13:20:03 EST news624633601 5G and 6G networks must take into account the load and adapt resource consumption at every moment. To do this, they need to track current indicators and be able to predict them. This is how services will make decisions about dividing the network into slices and balancing the load. Typically, machine learning models are used for prediction. https://techxplore.com/news/2024-01-mathematicians-machine-5g-6g-traffic.html Internet Wed, 10 Jan 2024 17:31:02 EST news624130261 Metal matrix composites are a modern alternative to steel. They are molecular-reinforced materials, which consist of a metal reinforcement matrix and filler. Such composites can be further strengthened, for example, using titanium monobromide or titanium carbide. https://techxplore.com/news/2024-01-ai-strength-composite-titanium-carbide.html Engineering Wed, 10 Jan 2024 17:29:03 EST news624130141 Researchers have described a green method for obtaining copper oxide nanoparticles from the noni plant (Morinda citrifolia), common in Asia. These copper oxide nanoparticles exhibit bactericidal properties. Moreover, antibacterial activity depends on the physical properties of the particles—size, structure, and concentration of copper oxide. https://phys.org/news/2024-01-scientists-green-method-bactericidal-copper.html Nanomaterials Wed, 10 Jan 2024 14:27:03 EST news624119222 RUDN University agronomists and colleagues from China and Iran have helped tomatoes cope with the toxic effect of aluminum in acidic soils with the help of melatonin. This hormone contributes to nitric oxide production, blocking the toxic metal and preventing it from destroying plant cells. The results are published in the South African Journal of Botany. https://phys.org/news/2023-11-agronomists-tomatoes-toxic-aluminum-melatonin.html Plants & Animals Wed, 29 Nov 2023 15:55:25 EST news620495722 Scientists from the RUDN University and colleagues from Iran have determined the optimal dosage of a popular dietary supplement for rainbow trout. Exceeding it not only negates a positive effect, but can cause harm to the health of the fish. Results of the study have been published in Aquaculture. https://phys.org/news/2023-11-scientists-properly-rainbow-trout.html Plants & Animals Wed, 29 Nov 2023 15:55:09 EST news620495707 Researchers at the RUDN Laboratory of Biology of Single Cells have studied the possibilities of DNA sequencing at the level of individual cells in patients with a rare form of childhood leukemia. The study revealed the mechanisms of the clonal evolution of the tumor and its transformation into a more aggressive form of leukemia at the level of individual subclones. It has also been shown that this technology can also be used as a very accurate tool for assessing the response of the disease to the treatment. https://medicalxpress.com/news/2023-11-dna-sequencing-reveals-clonal-evolution.html Oncology & Cancer Wed, 29 Nov 2023 15:54:38 EST news620495675 RUDN University biotechnologists have created a method for detection of bacterial infection in apple, pear, hawthorn and other plants of the Rosaceae family. The test does not require laboratory equipment, the result is ready in 10 minutes. This will allow detecting the disease quickly and prevent the spread of infection. The results are published in Physiological and Molecular Pathology of Plants. https://phys.org/news/2021-06-rapid-blight.html Plants & Animals Thu, 17 Jun 2021 13:09:19 EDT news543154153 RUDN University mathematicians built a model of COVID-19 spreading based on two regression models. The mathematicians divided the countries into three groups, depending on the spreading rate and on the climatic conditions, and found a suitable mathematical approximation for each of them. Based on the model, the mathematicians predicted the subsequent waves. The forecast was accurate in countries where mass vaccination was not introduced. The results are published in Mathematics. https://phys.org/news/2021-06-covid-vaccination-affects-pandemic.html Mathematics Thu, 17 Jun 2021 12:18:49 EDT news543151126 An RUDN and Shahid Beheshti University(SBU) chemist proposed an eco-friendly method for the synthesis of pyrrole and pyrazole derivatives with a wide range of applications in medicine: from antidepressants to anticancer. Moreover, the synthesized compounds possess interesting fluorescence features, and the bioactive scaffolds might attract great interest in the fields of clinical diagnostics and biomedical research in the future. The results are published in the Organic & Biomolecular Chemistry. https://phys.org/news/2021-06-chemist-eco-friendly-synthesis-fluorescent-compounds.html Materials Science Thu, 10 Jun 2021 11:16:27 EDT news542542585 An RUDN University professor and her colleagues from France proved that higher intake of magnesium and vitamin B6 helps pregnant people cope with the consequences of magnesium deficiency during pregnancy and with hormone-related conditions. Within four weeks, the painful symptoms become less severe, the quality of life improves, and the risks of miscarriage are reduced. The results of the study are published in Scientific Reports. https://medicalxpress.com/news/2021-06-professor-benefits-magnesium-supplementation-pregnancy.html Obstetrics & gynaecology Wed, 09 Jun 2021 11:14:47 EDT news542456085 An RUDN University chemist with his colleagues from Portugal has developed two types of coating based on new coordination polymers with silver. Both compounds were successfully tested against four common pathogens. The results are published in ACS Publications (ACS Appl. Mater. Interfaces). https://phys.org/news/2021-06-polymers-antibacterial-efficiency.html Materials Science Wed, 09 Jun 2021 11:12:53 EDT news542455971 A RUDN University mathematician and his colleagues from France and Hungary developed an algorithm for parallel computing, which allows solving applied problems, such as in electrodynamics or hydrodynamics. The gain in time is up to 50%. The results are published in the Journal of Computational and Applied Mathematics. https://phys.org/news/2021-06-mathematician-boosts-domain-decomposition-method.html Mathematics Thu, 03 Jun 2021 12:50:49 EDT news541943447 A team of researchers from RUDN University and Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences synthesized and studied a range of new chlorine derivatives to be used in cancer phototherapy to diagnose tumors and to increase the sensitivity of tumor cells to light. The results of the study were published in the Dyes and Pigments journal. https://medicalxpress.com/news/2021-03-scientists-compounds-photodynamic-antitumor-therapy.html Oncology & Cancer Thu, 18 Mar 2021 09:47:20 EDT news535279637 A clinical pharmacologist from RUDN University together with his colleagues from Gamaleya Research Institute of Epidemiology and Microbiology completed the second stage of a clinical trial of a new TB vaccine that was conducted with the participation of 180 volunteers. The trial confirmed the safety and efficiency of the vaccine. The results of the study were published in the Vaccines journal. https://medicalxpress.com/news/2021-03-tb-vaccine.html Vaccination Thu, 18 Mar 2021 08:08:33 EDT news535273711