Sentences with phrase «hypothesized mechanisms of»

Identification of these genes provides support for previously hypothesized mechanisms of high - altitude adaptation and illuminates the complexity of hypoxia - response pathways in humans.

Not exact matches

What these scientists hypothesize goes far beyond the realm of cannibalism and into the very mechanisms of evolution itself.

«Since urine formation and excretion by the kidney is one of the most easily detectable rhythmic processes (we are forming and excreting much more urine during the day), we hypothesized that at least a part of this rhythmicity is dependent on the circadian clock mechanism,» said Dr. Tokonami.

«The basic science question of what causes these mounds has long existed, and the mechanism we simulated has been hypothesized.

«We hypothesized that C. difficile must tightly control the production of its iron acquisition mechanisms so that just the right amount of iron is brought into the bacteria,» said Ellermeier, who is an Associate Professor in the Department of Microbiology, University of Iowa, Iowa City.

Consulting the model, the researchers hypothesized that the overall cell cycle's lack of variation was the result of a built - in negative feedback mechanism.

We hypothesize that the mechanism of action of J147 is related to its ability to increase the levels of BDNF and NGF, and studies are being conducted to identify its molecular target.

Some of the hypothesized mechanisms that contribute to weight loss on the ketogenic diet include increased metabolism from the thermic effects of the high protein levels and reduced appetite from the high satiety effect of protein.

Piche et al (14) observed colonic fermentation — mediated lower esophageal sphincter relaxation, and they hypothesized that a neural mechanism was responsible for the action of SCFAs on muscular tone.

A study that looked at the mechanism behind dietary fibers effect on the microbiome, they hypothesized that «dietary fiber resists digestion in the small intestine, and enters the colon where it is fermented to produce [short chain fatty acids] that may enhance the healthy composition of gut microbiota.»

They also hypothesize that antibiotics may increase breast cancer risk because they inhibit key parts of the immune system that protect against cancer, as well as anti-inflammatory mechanisms.

''... it could be hypothesized that PD is, at least in part, a type of «segmental» aging, in which specific, localized, and accelerated aging mechanisms, which for reasons at present largely unknown, markedly affect dopaminergic (DA) neurons in the pars compacta region of the midbrain substantia nigra (SnPC).»

The researchers found that «1) ingestion of a large number of calories at one time (binge eating) impacts metabolic parameters even when total calories and macronutrients are appropriate for weight; 2) the timing of energy intake is an independent determinant of the diurnal rhythm of leptin secretion, indicating a relatively acute affect of energy balance on leptin dynamics; 3) the mechanism of exaggerated insulin secretion after a binge meal remains to be determined, but may be related to the altered diurnal pattern of leptin secretion; and 4) as most binge eating episodes in the population are associated with the ingestion of excess calories, it is hypothesized that binge eating behavior is associated with even greater metabolic dysfunction than that described herein.»

Both of these mechanisms could lead to more stable glucose patterns over time, which some have hypothesized may result in reduced appetite and energy intake (76,77).

Moreover, two features of this study — the analysis sample of experienced teachers and Cincinnati's use of peer evaluators — may increase the saliency of these hypothesized mechanisms.

The hypothesized mechanism is analogous to that by which El Niño, the periodic warming of the eastern and central Pacific Ocean, affects weather thousands of kilometers away.

Now imagine if there was already a known mechanism of IR scattering that reduced IR loss to space resulting in a heating effect, and that the particulars of the mechanism were well understood, and that the substances responsible for this mechanism were very well known, and that we were increasing the concentration of this substance quite dramatically, and that we we seeing temperature rises as had had been hypothesized almost a century ago, and that some signs indicative of this particular mechanism for warming had been observed.

Some mechanisms for that are hypothesized, e.g. methane release from polar regions, increased melting of Greenland leading to stopping the Gulf Stream, rapid reduction of Arctic sea - ice and its positive feedback, collapse of Antarctic ice shelves, loss of the Amazon, large volcanoes, asteroid impacts, unexpected solar variation.

Consider this key sentence: «The (climate) forcing from changes in total solar irradiance alone does not seem to account for these observations, implying the existence of an amplifying mechanism such as the hypothesized GCR - cloud link.»

The hypothesized mechanism is provided by the absorption bands of CO2 that are located near the peak of the black - body spectrum at the mean temperature of the Earth.

This is precisely the kind of feedback hypothesized for enhanced greenhouse except this now has a demonstrated physical mechanism and is of such importance we should walk through its function just to be clear.

Additionally, individuals from lower SES homes report more stressful events during their lifetime, and the biological response to stressors has been hypothesized as one of the underlying mechanisms for health and cognitive disparities in relation to SES (Anderson and Armstead, 1995; Hackman and Farah, 2009; Noble et al., 2012a).

To explain this interrelation we hypothesized the same mechanisms indicated in Borkovec» model (2004) and Alloy and colleagues (2000), which states that ruminative worrying is a form of emotional avoidance that plays a role in the maintenance of anxiety in generalized anxiety disorder (GAD) and mood disorders.

As hypothesized, the experiments demonstrated that improving parenting practices and reducing contacts with deviant peers served as mediating mechanisms for reducing rates of adolescent delinquency.

Retraining the addicted brain: A review of hypothesized neurobiological mechanisms of mindfulness - based relapse prevention.

Changes in parenting behaviour have now been shown in several studies to mediate the effects of PMT with young children with conduct problems.15 This is a critical finding that goes to the core of PMT, as improvement in parenting behaviour is hypothesized to be the central mechanism by which change in child behaviour occurs.

Re-Training the Addicted Brain: A Review of Hypothesized Neurobiological Mechanisms of Mindfulness - Based Relapse Prevention.

Hypothesized mechanisms aside, these findings suggest that support for PA may serve to ameliorate the potentially maladaptive effects of permissiveness, underscoring the need for assessment and joint consideration of both practices and styles.

The primary constructs within the hypothesized framework are: (1) social position variables — characteristics that are used within societies to hierarchically stratify groups (race, gender, socioeconomic status); (2) parenting variables — familial mechanisms that may influence African American adolescents well - being, perceptions of competence, and attitudes towards others in various contexts (e.g., parenting practices and racial socialization messages); (3) racial discrimination — negative racially driven experiences that may influence feelings of competence, belongingness, and self - worth; (4) environmental / contextual factors — settings and surroundings that may impede or promote healthy identity development (e.g., academic settings); and (5) learner characteristics — individual characteristics that may promote or hinder positive psychological adjustment outcomes (e.g., racial identity, coping styles).

For positive emotion differentiation, we expect a similar mechanism to hold true in the sense that we hypothesize that people low on positive emotion differentiation show larger increases in intrinsic motivation in response to the experience of specific positive emotions than people high on positive emotion differentiation.

Hypothesizing that owner behavior relies on mechanisms that originally evolved to promote parenting, we predicted that, similarly to parenting behavior, we would find various components of owner behavior related to support, warmth and control.

Using constructs with mismatched sources of data, we conducted a set of latent growth mediational analyses to test hypothesized mechanisms explaining change.