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    Blood Factor Can Turn Back Time in the Aging Brain

    August 17, 2023, Categories  Health/Medical, Biology/Biotechnology

    Blood factor can turn back time in the aging brain
    Systemic PF4 enhances adult hippocampal neurogenesis in vivo. a Experimental design of PF4 injection paradigm in young mice. b, c Intravenous (i.v.) PF4 injections for 1 week did not affect neural precursor cell proliferation in the subgranular zone (SGZ; n = 10 mice in saline group; n = 9 mice in PF4 group; counts of one hemisphere), but increased the number of doublecortin+ (DCX+) cells (n = 15 mice per group; counts of one hemisphere). d Experimental design of the double-labeling paradigm with CldU and IdU. e Acute administration of PF4 did not affect neural precursor cell proliferation, including the recruitment of cells from quiescence (n = 20 mice per group). f Running paradigm of PF4 knockout (KO) mice. g Representative images of Ki67+ cells in the S...
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    Researchers fabricate Phase-Heterojunction All-Inorganic Perovskite Solar Cells with an Efficiency Above 21.5%

    August 17, 2023, Categories  Physics, Technology/Electronics, Chemistry/Nanotechnology

    Phase-heterojunction all-inorganic perovskite solar cells with an efficiency above 21.5%
    Schematic representation of fabrication of phase-heterojunction perovskite solar cells. Credit: Mali et al.

    Solar technologies have become increasingly advanced over the years, with the discovery of new photovoltaic materials and designs. While solar cells based on a mixture of organic and inorganic halide perovskite materials have been the topic of numerous research studies and achieved promising performances, these cells are often difficult to fabricate on a large-scale.

    Researchers at Chonnam University in South Korea recently introduced an alternative solar cell design fully based on inorganic perovskites. Their solar cells, introduced in Nature Energy, could be easier to fabricate on a large-scale, while nonetheless achieving promising power conversion efficiencies (PCEs).

    “...

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    XRISM Spacecraft will Open New Window on the Xray Cosmos

    August 17, 2023, Categories  Astronomy/Space

    Scientists studied NGC 7319, part of the visual grouping of galaxies called Stephan’s Quintet, using the Medium-Resolution Spectrometer (MRS) in the Mid-Infrared Instrument (MIRI) on NASA’s James Webb Space Telescope. The galaxy contains a supermassive black hole that is actively accreting material. The spectrometer features integral field units (IFUs) – each containing a camera and spectrograph. IFUs provided the Webb team with a collection of images of the galactic core’s spectral features, shown here. Blue-colored regions indicate movement toward the viewer and orange-colored regions represent movement away from the viewer. Powerful radiation and winds from the black hole ionize hot spots of super-heated gas, creating the argon and neon lines...
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    Older Adults who play Digital Puzzle Games have the Same Memory Abilities as People in their 20s, a new study has shown.

    August 16, 2023, Categories  Health/Medical, Biology/Biotechnology

    Age plays a part in the type of digital games that are best to stimulate memory

    The study, from the University of York, also found that adults aged 60 and over who play digital puzzle games had a greater ability to ignore irrelevant distractions, but older adults who played strategy games did not show the same improvements in memory or concentration.

    It is known that as humans age, their mental abilities tend to decrease, particularly the ability to remember a number of things at a single time — known as working memory. Working memory is thought to peak between the ages of 20 and 30 before slowly declining as a person gets older.

    Previous research, however, has shown that the way we hold information in the brain changes as we get older, and so the York team looked at whether the ...

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