Results 71 to 80 of about 7,196,003 (316)

Impacts of Self-Administered 3,4-Methylenedioxypyrovalerone (MDPV) Alone, and in Combination with Caffeine, on Recognition Memory and Striatal Monoamine Neurochemistry in Male Sprague Dawley Rats: Comparisons with Methamphetamine and Cocaine

open access: yesBrain Sciences
Recent data suggest that 3,4-methylenedioxypyrovalerone (MDPV) has neurotoxic effects; however, the cognitive and neurochemical consequences of MDPV self-administration remain largely unexplored.
Robert W. Seaman   +7 more
doaj   +1 more source

An update on CRF mechanisms underlying alcohol use disorders and dependence.

open access: yesFrontiers in Endocrinology, 2016
Alcohol is the most commonly used and abused substance worldwide. The emergence of alcohol use disorders, and alcohol dependence in particular, is accompanied by functional changes in brain reward and stress systems, which contribute to escalated alcohol
Isabel Marian Hartmann Quadros   +3 more
doaj   +1 more source

Self-beliefs and bullying : unravelling the relation between bullying, being bullied and self-concept for upper elementary school aged children

open access: yes, 2006
Previous examinations of relations between bullying, victimisation, and self-concept have been flawed by erroneous research practices such as the un-attenuated use of dichotomous variables to measure relationships between continuous variables (Finger ...
Finger, Linda R.   +2 more
core  

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Varied behavioral responses induced by morphine in the tree shrew: a possible model for human opiate addiction

open access: yesFrontiers in Behavioral Neuroscience, 2014
Tree shrews represent a suitable animal model to study the pathogenesis of human diseases as they are phylogenetically close to primates and have a well-developed central nervous system that possesses many homologies with primates.
Fang eShen   +3 more
doaj   +1 more source

The relation of self-concept to desirable educational outcomes

open access: yes, 2006
Reviewers (Byrne, 1996a, 1996b; Hattie, 1992; Marsh, Byrne, & Shavelson, 1988; Marsh & Craven, 1997; Craven, Marsh, & Burnett, 2003) consider that self-concept is multifaceted and espouse that self-concept cannot be adequately understood if its ...
Craven, Rhonda   +3 more
core  

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

open access: yesFEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source

Offspring of prenatal IV nicotine exposure exhibit increased sensitivity to the reinforcing effects of methamphetamine

open access: yesFrontiers in Pharmacology, 2012
Maternal smoking during pregnancy is associated with increased substance abuse in offspring. Preclinical research shows that in utero exposure to nicotine, the primary psychoactive compound in tobacco smoke, influences the neurodevelopment of reward ...
Steven Brown Harrod   +2 more
doaj   +1 more source

Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research

open access: yesFEBS Letters, EarlyView.
What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley   +1 more source

A comprehensive multilevel model meta-analysis of self-concept interventions

open access: yes, 2006
The efficacy of self-concept interventions has previously been examined through traditional meta-analytic methods, and a host of moderators of intervention outcomes have been identified (O’Mara, Marsh, & Craven, 2004; Haney & Durlak, 1998; Hattie, 1992).
Craven, Rhonda   +2 more
core  

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