Define Dental science. Dental science synonyms, Dental science pronunciation, Dental science translation, English dictionary definition of Dental science. n. The science concerned with the diagnosis, prevention, and treatment of diseases of the teeth, gu
nucleus; a process called karyogamy. Only when the pronuclei become a single nucleus is the fertilized egg called a zygote (Fig. 2). The timing of nuclear formation varies greatly from one species to another. For example, it takes less than 1h insea urchinsand more than 12h in mice. ...
The nucleolus is the most prominent organelle in the mammalian nucleus, and was first observed more than 200 years ago. It is assembled around the tandemly repeated clusters of recombinant DNA (rDNA) genes, producing a subnuclear compartment that locally concentrates the transcription and processing ...
Nuclear fusion is the reaction that churns at the hearts of stars, in which two light atomic nuclei merge into a single heavier nucleus. Fusion produces very little nuclear waste, and no greenhouse gas emissions, which means it has long been touted as a potential clean alternative to conventio...
In the 1910s, Danish physicist Niels Bohr tried to describe the internal structure of atoms using quantum mechanics. By this point, it was known that an atom was made of a heavy, dense, positively charged nucleus surrounded by a swarm of tiny, light, negatively charged electrons. Bohr put ...
Definition of the p-p chain:In the field of nuclear physics, the p-p chain refers to a series of nuclear fusion reactions, starting with the fusion of two protons and leading, ultimately, to the creation of a helium-4 nucleus. The p-p chain is by far the most common fusion process ...
atomnucleus. Each electron carries one unit of negative charge (1.602 x 10-19coulomb) and has a smallmassas compared with that of aneutronorproton. Electrons are much less massive thanprotonsor neutrons. The mass of an electron is 9.10938 x 10-31kg. This is about 1/1836 the mass of a...
triggered by orthodontic force, resulting in transmission of painful signals to the brain.97,98,99This process activates an inflammatory cascade in the trigeminal spinal nucleus.87It is mediated by the activation of neurons and inflammatory cells,100,101leading to an increase in the secretion of ...
Open access to sequence data is a cornerstone of biology and biodiversity research, but has created tension under the United Nations Convention on Biological Diversity (CBD). Policy decisions could compromise research and development, unless a practical
Key Takeaways: Definition of Radioactivity Radioactivity is the process by which an unstable atomic nucleus loses energy by emitting radiation. While radioactivity results in the release of radiation, not all radiation is produced by radioactive material. ...