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Hace 6 días · This is a list of radioactive nuclides (sometimes also called isotopes ), ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between approximately 10 −19 and 10 −10 seconds. [1]
Hace 2 días · c = 439.90 pm (at 20 °C) Thermal expansion: 8.175 × 10 −6 /K (at 20 °C) Thermal conductivity: 50.6 W/(m⋅K) Electrical resistivity: 200 nΩ⋅m (at 20 °C) Magnetic ordering: Paramagnetic : Molar magnetic susceptibility +270.0 × 10 −6 cm 3 /mol (298 K) Speed of sound thin rod: 16,200 m/s (at 20 °C) CAS Number: 7440-26-8 ...
Hace 6 días · Now, NASA is stepping up its contributions to the mission after a memorandum of understanding was signed May 16 at ESA’s headquarters in Paris, France, including the supply of radioisotope heater units (RHUs) fueled—in a space exploration first—with americium-241.
Hace 2 días · In this infamous accident, 50 tons of radioactive material were released into the surrounding area, including the metals caesium-137 and strontium-90. In an attempt to help make the contaminated area eventually habitable, fields of sunflowers were grown.
Hace 1 día · Allied Market Research published a report, titled, "Radiopharmaceuticals Market by End User (Hospitals and Clinics, Medical Imaging Centers, and Others), Radioisotope (Technetium 99m, Gallium 68 ...
Hace 1 día · Unbinilium, also known as eka-radium or element 120, is a hypothetical chemical element; it has symbol Ubn and atomic number 120. Unbinilium and Ubn are the temporary systematic IUPAC name and symbol, which are used until the element is discovered, confirmed, and a permanent name is decided upon. In the periodic table of the elements, it is ...
Hace 1 día · Background: Exosomes are nanometer-sized, lipid bilayer membrane vesicles that are secreted by various cell types. Mesenchymal stem cells (MSCs) have been shown to exert therapeutic effects through the secretion of exosomes via a paracrine pathway. Functions: Recent studies have demonstrated that MSC-derived exosomes (MSC-Exos) can effectively transport various bioactive substances, including ...
