Sentences with phrase «nucleus increasing»

It shows the inner cloud of dust and gas surrounding the comet's nucleus increasing by 200 kilometres (about 120 miles) in size.

Using this marker, the green fluorescence of the nucleus increases progressively in cells in the growth phase and turns off after the division.

But as the size, and therefore charge, of the nucleus increases, the electromagnetic force takes on a larger role and, at a certain point, flips the directional preference for neutron production.

«The number of formed superheavy nuclei increases when a target made of heavy atoms (e.g., Pb) is used.

Mar. 31, 2017 — In budding yeast, accumulation of a certain type of RNA in the nucleus increased life span, offering a new clue to longevity.

Not exact matches

We anticipate some sort of growth toward increased complexity: increasingly larger organic macromolecules, then the convergence of many macromolecules to constitute a simple living system, either as a cell with its protective wall and vital nucleus or as some functional analogue, then the convergence of many cells to form larger organisms.

If, for any reason, the distance between the two iodine - atom nuclei should be less than that distance, there will be an unbalanced force (mainly arising from interactions of the filled shells) which will tend to increase the distance between the atomic centers.

Being now called upon by biology to consider the effects of synthesis, it is beginning to perceive that, parallel with the phenomenon of corpuscular disintegration, the Universe historically displays a second process as generalized and fundamental as the first: I mean that of the gradual concentration of its physico - chemical elements in nuclei of increasing complexity, each succeeding stage of material concentration and differentiation being accompanied by a more advanced form of spontaneity and spiritual energy.

In animal models, exposure to cigarette smoke or nicotine during fetal development alters the expression of the nicotinic acetylcholine receptor in areas of the brainstem important for autonomic function, 28 alters the neuronal excitability of neurons in the nucleus tractus solitarius (a brainstem region important for sensory integration), 29 and alters fetal autonomic activity and medullary neurotransmitter receptors.30 In human infants, there are strong associations between nicotinic acetylcholine receptor and serotonin receptors in the brainstem during development.31 Prenatal exposure to tobacco smoke attenuates recovery from hypoxia in preterm infants, 32 decreases heart rate variability in preterm33 and term34 infants, and abolishes the normal relationship between heart rate and gestational age at birth.33 Moreover, infants of smoking mothers exhibit impaired arousal patterns to trigeminal stimulation in proportion to urinary cotinine levels.35 It is important to note also that prenatal exposure to tobacco smoke alters the normal programming of cardiovascular reflexes such that there is a greater - than - expected increase in blood pressure and heart rate in response to breathing 4 % carbon dioxide or a 60 ° head - up tilt.36 These changes in autonomic function, arousal, and cardiovascular reflexes might all increase an infant's vulnerability to SIDS.

Perinuclear increases in [cAMP] slowly caused the translocation of the freed catalytic subunit into the nucleus to an extent proportional to the percentage of its dissociation from the regulatory subunit.

The idea was to increase the neutrons» chances of being absorbed by another uranium nucleus.

Its altered form moves to the nucleus, where it increases the activity of a gene involved in metastasis (The Journal of Clinical Investigation, DOI: 10.1172 / JCI40433).

The researchers discovered that social contact increased production of anandamide in a brain structure called the nucleus accumbens, which triggered cannabinoid receptors there to reinforce the pleasure of socialization.

The increase in disc height was due to restoration in the transplant group of the nucleus pulposus structure, which refers to the jelly - like substance in the disc, and an increased amount of water content, which is critical for the appropriate function of the disc as a cushion for the spinal column, the researchers concluded.

Getting positively charged nuclei to overcome their aversion to each other requires a huge energy input — like very high temperatures to increase the likelihood that these atoms will collide or immense compression to force them to stick together.

Accommodating these extra structures into the daughter cell's nucleus might be what increases the overall cell size.

The lines of hexagons are graphene nuclei, with increasing magnification from left to right, where the scale bars from left to right correspond to 10?

The theory is that electrified, umbrella - shaped towers can send negatively charged particles into the air, increasing the chance that supercooled droplets will collide with freezing nuclei, thus becoming rain.

One of the most immediate effects of drugs on the brain is an increase in the levels of dopamine, particularly in a region of the brain called the nucleus accumbens.

The researchers also found increased activity between areas of the prefrontal cortex and the nucleus accumbens, a center for reward sensitivity that is often implicated in addiction research.

By increasing the energy of the electrons, scientists are increasing the resolution of the CEBAF microscope for probing ever more deeply into the nucleus of the atom.

Albertini's group now suggests not only that these outside cells tell the egg where to locate the polar body — and, therefore, the nucleus and spindle — but also that their plumbing lines soften up the egg cell's rind in the opposite, or vegetal pole, to increase the odds that sperm will penetrate the hemisphere opposite the nucleus.

Liver cells lacking TRF1 gene (right) show, under chronic stress, larger nuclei and other markers characteristic of patients with cirrhosis or hepatitis (an increase in p21, PCNA and cyclin D1), when compared to normal cells under the same stimulus (left).

As the density increased, the distance between the nuclei decreased, setting off a chain reaction.

In an earlier study, the research team, led by U.T. Southwestern psychiatry professor Eric Nestler, found that levels of BDNF — which is implicated in learning because of its role in creating stronger connections between neurons — increase in the nucleus accumbens in response to chronic stress.

«Diamonds may be the key to future NMR / MRI technologies: Researchers increase NMR / MRI sensitivity through hyperpolarization of nuclei in diamond.»

But by adding neutrons into the nucleus, it might be possible to increase their lifetimes.

These oxidation products of compounds such as monoterpenes results in an increase of condensing vapours that can further form cloud condensation nuclei over the continents and thus has an influence on the formation of clouds.

They saw an increase in low - frequency («delta band») brain - wave activity in the nucleus accumbens, which peaked one second before a mouse indulged in a binge session.

Over the course of about five seconds increasing numbers of red dots appear outside the nucleus, in the cell's cytoplasm.

The largest increase in blood flow occurred in two small areas, or nuclei, within the brain stem which control the constriction and dilation of blood vessels in the brain.

Indeed, in humans, imaging studies have shown that drugs of abuse increase DA release in striatum (including the nucleus accumbens), and these increases have been associated with the subjective experience of reward (7 ⇓ — 9).

Kehr, J.; Ichinose, F.; Yoshitake, S.; Goiny, M.; Sievertsson, T.; Nyberg, F.; Yoshitake, T. Mephedrone, compared to MDMA (ecstasy) and amphetamine, rapidly increases both dopamine and serotonin levels in nucleus accumbens of awake rats.

CARS microscopy also confirmed the gradual increase of the size of lipid containing structures during oogenesis (Figs. 5A and 5B), the sudden re-localization of these structures to the periphery of the dividing nucleus in the first embryonic division (Fig. 5E), and the propagation of this phenotype, although with gradually diminishing appearance, throughout embryonic development (Figs. 5F and 5H).

γH2Ax assay revealed a significant increase (p < 0.05) in number of foci / nuclei in siTRF2 cells compared to scrambled (Fig 3d and 3e).

Mean γH2Ax foci / nuclei was observed to significantly increase (p < 0.05) with increasing concentrations of Bleomycin (20, 40, 60, 80 μM) in parental HCT - 116 (Fig 1e and 1f).

With increasing dosage of Bleomycin, significantly low foci per nuclei (p < 0.05) was observed in clonospheres as compared to that in parental HCT - 116 (Fig 2a and 2b).

During periods of oxidative stress, as levels of reactive electrophilic metabolites increase, the ability of Keap1 to target Nrf2 for ubiquitin - dependent degradation is disrupted, thereby increasing Nrf2 protein levels and its transport into the nucleus, resulting in transcription of antioxidant response genes [5], [6], [8], [10], [11].

The Society believes that research involving the transfer of a human nucleus into an animal egg will lead to important new knowledge about cell nuclear replacement (CNR) technology and, if it were to prove possible to produce embryonic stem cells by this route, would increase understanding of how to programme these cells to develop into different tissue types.

By increasing expression of Ran, the researchers were able to elevate TDP - 43 levels in the nucleus of progranulin - deficient neurons and prevent their death.

You can keep increasing the size of this nucleus by adding more neutrons, but there's a trade - off.

That's why in order for them to grow beyond the current size, they need to increase the number of nuclei which are present in the area.

In addition, fructose caused a stronger reaction in the nucleus accumbens, a «reward» center of the brain, increasing the participants» desire to eat.

It is believed that the nucleus releases increased amounts of mRNA as a response to muscle tension and myofibrillar damage, which happens because of insufficient cycling of the actin / myosin cross-bridges which happen during very intense muscle contractions, even though the exact mechanism is not yet understood in detail.

[20] Music increases nucleus accumbens activity, an area of the brain which releases dopamine.

But, she also found increased interaction between the nucleus accumbens and higher, cortical structures of the brain involved in pattern recognition, musical memory, and emotional processing.

At the same time, magnetic resonance imaging (MRI) brain scans of those who drank the corn syrup drink showed increased activation in a region of the brain called the nucleus accumbens, which has been tied to reward and cravings in past research, compared with the men who drank the low - glycemic index drink.

When ROS levels increase, such as during a high volume Mountain Dog workout, Keap1 is degraded, releasing NRF2, which then moves into the nucleus.

The nuclei from the satellite cells are donated toward making new myofibrils within muscle fibers and toward increasing the size of pre-existing ones.

Muscle biopsies reveal multifocal necrosis, hypertrophy, atrophy, increased fibrosis and a variable increase in the number of fibers with internal nuclei and occasional whorled fibers.