1. The researches are concerned with alpha rays这些研究是关于阿尔法射线的。 2. We have shown that it is possible to create a radioactivity characterized by the emission of positive or negative electrons in boron and magnesium , by bombardment with alpha rays我们已经展示了人工放射现象的可能性,这...
Define Alpha rays. Alpha rays synonyms, Alpha rays pronunciation, Alpha rays translation, English dictionary definition of Alpha rays. Alpha rays. Translations. Russian / Русский: альфа-лучи.
Since the electromagnetic interaction extends over some distance, alpha particles don’t have to collide with an atom directly. They can transfer energy simply bypassing close by.Alpha particlesinteract with matter primarily through coulomb forcesbetween their positive charge and the negative charge of ...
It was the first type of nuclear radiation to be discovered, before beta particles and gamma rays. But because an alpha particle is identical to the nucleus of a helium-4 atom, it is sometimes represented as He2+, that is, a doubly ionized helium-4 atom. Rutherford's gold foil ...
Define alpha p. alpha p synonyms, alpha p pronunciation, alpha p translation, English dictionary definition of alpha p. n. 1. A very small piece or part; a tiny portion or speck. 2. A very small or the smallest possible amount, trace, or degree: not a pa
Then bilateral knee reflex was found to be exaggerated, and the Babinski sign was positive. Brain MRI revealed T2 hyperintense signals in the bilateral frontopariental region, parieto-occipital white matter, corona radiata, and posterior capsule, which suggested dysmyelination or demyelination owing ...
keratin mRNAs, as indicated by the positive fluorescent signal. Dashes underline the epidermis. Scale bar=20μm. (F) In situ hybridization detail showing expression (arrows) of beta-keratin mRNAs in oberhautchen cells while those of the clear layer (arrowheads) are negative. Scale bar=5μm....
natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity" negative feedback - feedback in opposite phase with (decreasing) the input positive feedback, regen...
are those for whom testing for SARS-CoV-2 is inconclusive or who test positive using a pan-coronavirus assay and without laboratory evidence of other respiratory pathogens. A confirmed case is one with a laboratory confirmation of SARS-CoV-2 infection, irrespective of clinical signs and symptoms....
is greater or less than bo=2Z1e2/E for Vapositive or negative. Assuming that b is large compared to the nuclear radius, it follows that lnλ/λo=3.71Z1(E-1/2 -(E-Va)-1/2).(5) where 3.71 is a fit parameter used by Taagepera and Nurmia. It is clear that Vacontrols λ. ...