يشير تحليل جديد أجرته جامعة كوين ماري في لندن إلى أن الثوابت الفيزيائية للكون تقع ضمن نطاق ضيق يسمح للسوائل بالتدفق بشكل مناسب داخل الخلايا الحية.
يجادل باحثون بقيادة الفيزيائي كوستيا تريتشينكو بأن أي تغييرات طفيفة في قيم مثل ثابت بلانك أو شحنة الإلكترون من شأنها أن تغير اللزوجة بما يكفي لتعطيل نقل المغذيات، وطوي البروتين، وغيرها من العمليات الخلوية الضرورية للحياة.
من إعداد الذكاء الاصطناعي صورة مولدة بواسطة الذكاء الاصطناعي تم التحقق من الحقائق
Researchers at Texas A&M University say they have developed a customizable “vessel-chip” that recreates the complex shapes of human blood vessels—including branches, aneurysm-like bulges and stenosis-like narrowings—so scientists can study how altered blood flow affects endothelial cells and evaluate potential treatments without relying on animal models.
Researchers at Oregon Health & Science University have identified hidden fluid flows inside cells that rapidly transport proteins to the leading edge, challenging traditional views of cellular movement. The discovery, made during a classroom experiment, could explain why some cancer cells spread aggressively. The findings appear in Nature Communications.
من إعداد الذكاء الاصطناعي
Researchers at Drexel University have discovered that certain viscous liquids can snap apart like solids when stretched with sufficient force. The finding, detailed in a study published in Physical Review Letters, challenges traditional views of fluid dynamics by linking the behavior to viscosity rather than elasticity. This phenomenon was observed in simple liquids such as tar-like hydrocarbons and styrene oligomer.
Physicists with the STAR collaboration have observed particles emerging directly from empty space during high-energy proton collisions at Brookhaven National Laboratory. The experiment provides strong evidence that mass can arise from vacuum fluctuations, as predicted by quantum chromodynamics. Quark-antiquark pairs promoted to real particles retained spin correlations tracing back to the vacuum.
من إعداد الذكاء الاصطناعي
Researchers at EPFL have created a new membrane using lipid-coated nanopores that boosts the efficiency of blue energy production from mixing saltwater and freshwater. The innovation allows ions to pass through more smoothly, generating up to three times more power than existing technologies. This advance could make osmotic energy a more viable renewable source.