Supported bifunctional thioureas as recoverable and reusable catalysts for enantioselective nitro-Michael reactions.

The catalytic activity of different supported bifunctional thioureas on sulfonylpolystyrene resins has been studied in the nitro-Michael addition of different nucleophiles to trans-β-nitrostyrene derivatives. The activity of the catalysts depends on the length of the tether linking the chiral thiourea to the polymer. The best results were obtained with the thiourea derived from (L)-valine and 1,6-hexanediamine.

[Differences in eating habits and physical activity in a sample of preadolescent depending on their weight category].

Background: Obesity is a problem with serious implications for the physical, psychological and social health that affects millions of children and adolescents worldwide. This study wants to obtain updated prevalence data of obesity and overweight in adolescents from 10 to 12 years old in the province of Alicante, information on eating habits, physical activity and selected sociodemographic variables. It is important to examine their relation with children's obesity and overweight or at risk of suffering it.

Gonorrhoea diagnoses in a network of STI clinics in Spain during the period 2006-2010: differences by sex and transmission route.

Background: Gonorrhoea infection is one of the most common bacterial sexually transmitted infections and an important cause of morbidity and serious complications. The objectives of this paper are: a) to describe gonorrhoea cases diagnosed in a network of 15 (out of 16) STI clinics in Spain during 2006-2010; b) to analyse differences among men who have sex with men (MSM), men who have sex exclusively with women (MSW) and women; and c) to evaluate factors associated to with HIV co-infection.

Methods: All gonorrhoea cases diagnosed in the network were included (25.

Is psycho-physical stress a risk factor for stroke? A case-control study.

Background: Chronic stress is associated with cardiovascular diseases, but the link with stroke has not been well established. Stress is influenced by life-style habits, personality type and anxiety levels. We sought to evaluate psycho-physical stress as a risk factor for stroke, while assessing gender influences.

Agreement between information provided by stroke patients and their relatives on psychophysical and vascular risk factors.

Background: In studies examining vascular risk factors and the effects of stress in stroke patients, information sometimes has to be provided by a close relative.

Objectives: The present study was designed to assess agreement between the information provided by a stroke patient and his/her next-of-kin or other close relative on prior vascular risk factors and situations of psychophysical stress based on a standardized interview within 72 h after stroke.

Design: Case-control observational study.

CCD detectors for molecular absorption spectrophotometry. A theoretical and experimental study on characteristics and performance.

Uncertainty in charge-coupled devices (CCDs) as UV-vis spectrophotometric detectors is studied here considering that it highly affects the limit of detection of analytical methods. Opposite to photomultiplier-type detectors (PMDs) and diode-array detectors (DADs), where uncertainty is mainly dependent on the photonic signal (shot noise), in CCD detectors uncertainty may come from both independent and dependent effects upon the photonic signal. Shot noise is specially important for high photonic signals in the detector (those for low absorbances) while the uncertainty that is independent of the signal is specially important for low photonic signals in the detector (those for high absorbances).

Pulsed infrared light therapy does not increase nitric oxide concentration in the blood of patients with type 1 and type 2 diabetes mellitus.

The purpose of this study was to determine if NO blood concentrations increased acutely following an 8-week course of pulsed infrared light therapy (PILT) which could be linked to an improvement in peripheral protective sensation (PPS) in patients who have profound chronic diabetic peripheral neuropathy. A total of 22 subjects with the diagnosis of type 1 (N = 2) or type 2 (N = 20) diabetes participated in the study. PILT was administered to one foot chosen at random with the other foot serving as a within-subject control (no treatment).