Dementia has become rampant among human beings who are pushed into a deep mental abyss, devoid of memories and remembrance.
It has been termed as “the long goodbye”. Even though the person remains alive, memories fade away slowly and irreversibly due to dementia.
Dementia eventually snatches away the ability of a person to communicate, eat and drink on their own, recognise family members and understand where they are.
A new electrical power converter design developed by Kobe University offers significantly improved efficiency at a reduced cost and lower maintenance. This direct current voltage boost converter is set to make a substantial impact on the development of electric and electronic components in various sectors, including power generation, healthcare, mobility, and information technology.
Devices that harvest energy from sunlight or vibrations, or power medical devices or hydrogen-fueled cars have one key component in common. This so-called “boost converter” converts low-voltage direct current input into high-voltage direct current output. Because it is such a ubiquitous and key component, it is desirable that it uses as few parts as possible for reduced maintenance and cost and at the same time that it operates at the highest possible efficiency without generating electromagnetic noise or heat. The main working principle of boost converters is to quickly change between two states in a circuit, one that stores energy and another that releases it. The faster the switching is, the smaller the components can be and therefore the whole device can be downsized. However, this also increases the electromagnetic noise and heat production, which deteriorates the performance of the power converter.
The team of Kobe University power electronics researcher Mishima Tomokazu made significant progress in developing a new direct current power conversion circuit. They managed to combine high-frequency switching (about 10 times higher than before) with a technique that reduces electromagnetic noise and power losses due to heat dissipation, called “soft switching,” while also reducing the number of components and, therefore, keeping cost and complexity low.
It affects your airways, the tubes that carry air in and out of your lungs. When you have asthma, your airways can become inflamed and narrowed. Different triggers can cause different types of asthma. More info here.
Asthma causes one’s airways to become sore and swollen. An attack means a person’s lungs are getting less air. Learn about two types of treatment.
Now that’s Wonderful. It’s touching by how they were brought to tears in making progress in fighting neurogenitive disease.
Auckland scientists are celebrating an important breakthrough after zeroing in on a rare genetic mutation causing motor neuron disease. Their work is now being published in the journal Brain, and national correspondent Amanda Gillies spoke to the lead researcher. ➡️ SUBSCRIBE: https://bit.ly/NewshubYouTube.
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Poirier M, Smith OE, Therrien J, et al. Resiliency of equid H19 imprint to somatic cell reprogramming by oocyte nuclear transfer and genetically induced pluripotency†. Biol Reprod. 2019;102:211–9.
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Tan, Y., Landford, W.N., Garza, M. et al. Sci Rep 9, 16,368 (2019). https://doi.org/10.1038/s41598-019-51794-6
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Scientists at Oregon Health & Science University and the Oregon National Primate Research Center (ONPRC) have successfully reprogrammed human skin cells to become embryonic stem cells capable of transforming into any other cell type in the body. It is believed that stem cell therapies hold the promise of replacing cells damaged through injury or illness. Diseases or conditions that might be treated through stem cell therapy include Parkinson’s disease, multiple sclerosis, cardiac disease and spinal cord injuries.
The research breakthrough, led by Shoukhrat Mitalipov, Ph.D., a senior scientist at ONPRC, follows previous success in transforming monkey skin cells into embryonic stem cells in 2007. This latest research will be published in the journal Cell online May 15 and in print June 6.
The technique used by Drs. Mitalipov, Paula Amato, M.D., and their colleagues in OHSU’s Division of Reproductive Endocrinology and Infertility, Department of Obstetrics & Gynecology, is a variation of a commonly used method called somatic cell nuclear transfer, or SCNT. It involves transplanting the nucleus of one cell, containing an individual’s DNA, into an egg cell that has had its genetic material removed. The unfertilized egg cell then develops and eventually produces stem cells.