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Hace 1 día · Pese a que ya han pasado tres decenios del desastre de Chernóbil, la situación no ha cambiado lo suficiente como para que la gente vuelva a vivir en esta zona ni para que se destine a la actividad agrícola. Sí, los niveles de radiación de cesio-137 y de estroncio-90, que tienen un promedio de vida de treinta años, realmente han disminuido.
Hace 5 días · Strontium and barium have fewer applications than the lighter alkaline earth metals. Strontium carbonate is used in the manufacturing of red fireworks. Pure strontium is used in the study of neurotransmitter release in neurons. Radioactive strontium-90 finds some use in RTGs, which utilize its decay heat.
- IIA
- IIA
- beryllium group
- alkaline earth metals
Hace 3 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 5 días · a radioactive isotope of strontium (with the mass number 90) that is present in the fallout from nuclear explosions; can be assimilated like calcium into bones.
Hace 1 día · Taking these factors into account, SrAl 12 O 19 appears to be a suitable choice, as strontium ranelate has been widely used in the treatment of osteoporosis patients, and strontium-containing biomaterials are already utilized in bone tissue engineering [27], [28].
Hace 4 días · Porous ferroelectric materials with random and aligned pore channels with their applications in catalysis, energy, and sensing technology fields have attracted significant attention due to their high...
Hace 5 días · This article delves into the realm of first-principles calculations to explore novel phases of strontium nitride (Sr–N) under varying pressures. Structural stability is rigorously examined through phonon calculations and mechanical property assessments, accompanied by an in-depth exploration of electronic band structures and electron–phonon interactions within the identified nonzero band ...
