A snapshot of the science of meditation and mindfulness [Review of the book Presence: How Mindfulness and Meditation Shape Your Brain, Mind, and Life, by P. Verhaeghen]

Book Review

Casting production management system

The paper presents the results of casting production management system for foundry industry. The production proces management system collects data from the entire production preparation proces, technology development using simulations, molding sand parameters, liquid metal, quality control, etc. By using the system, the foundry is able to reduce the time needed to prepare the production proces while maintaining high quality of the casting

Casting production management system

The paper presents the results of casting production management system for foundry industry. The production proces management system collects data from the entire production preparation proces, technology development using simulations, molding sand parameters, liquid metal, quality control, etc. By using the system, the foundry is able to reduce the time needed to prepare the production proces while maintaining high quality of the casting

Editorial

We use a linear FROG technique based on electro-optic modulation to fully characterise for the first time pulses from a 1.06 µm FP laser diode and design a grating to provide optimum pulse compression

Attention with a mindful attitude attenuates subjective appetitive reactions and food intake following food-cue exposure.

BACKGROUND: Excessive energy intake that contributes to overweight and obesity is arguably driven by pleasure associated with the rewarding properties of energy-dense palatable foods. It is important to address influences of external food cues in food-abundant societies where people make over 200 food related decisions each day. This study experimentally examines protective effects of a mindful attention induction on appetitive measures, state craving and food intake following exposure to energy-dense foods. METHOD: Forty females were randomly allocated to a standard food-cue exposure condition in which attention is brought to the hedonic properties of food or food-cue exposure following a mindful attention induction. Appetitive reactions were measured pre, post and ten minutes after post-cue exposure, after which a plate of cookies was used as a surreptitious means of measuring food intake. RESULTS: Self-reported hunger remained unchanged and fullness significantly increased for the mindful attention group post-cue exposure whereas hunger significantly increased for the standard attention group and fullness remained unchanged. There was no significant between-group difference in state craving post-cue exposure and ten minutes later. Significantly more cookies were eaten by the standard attention group ten minutes post-cue exposure although no significant between-group differences in appetitive and craving measures were reported at that time. CONCLUSION: Our results point to a promising brief intervention strategy and highlights the importance of distinguishing mindful attention from attention. Results also demonstrate that mindful attention can influence food intake even when craving and hunger are experienced

Percutaneous transluminal angioplasty in patients with peripheral arterial disease does not affect circulating monocyte subpopulations

Monocytes are mononuclear cells characterized by distinct morphology and expression of CD14 and CD16 surface receptors. Classical, quiescent monocytes are positive for CD14 (lipopolysaccharide receptor) but do not express Fc gamma receptor III (CD16). Intermediate monocytes coexpress CD16 and CD14. Nonclassical monocytes with low expression of CD14 represent mature macrophage-like monocytes. Monocyte behavior in peripheral arterial disease (PAD) and during vessel wall directed treatment is not well defined. This observation study aimed at monitoring of acute changes in monocyte subpopulations during percutaneous transluminal angioplasty (PTA) in PAD patients. Patients with Rutherford 3 and 4 PAD with no signs of inflammatory process underwent PTA of iliac, femoral, or popliteal segments. Flow cytometry for CD14, CD16, HLA-DR, CD11b, CD11c, and CD45RA antigens allowed characterization of monocyte subpopulations in blood sampled before and after PTA (direct angioplasty catheter sampling). Patients were clinically followed up for 12 months. All 61 enrolled patients completed 12-month follow-up. Target vessel failure occurred in 12 patients. While absolute counts of monocyte were significantly lower after PTA, only subtle monocyte activation after PTA (CD45RA and β-integrins) occurred. None of the monocyte parameters correlated with long-term adverse clinical outcome. Changes in absolute monocyte counts and subtle changes towards an activation phenotype after PTA may reflect local cell adhesion phenomenon in patients with Rutherford 3 or 4 peripheral arterial disease

Matrix replica-based assessment of the microstructure of primary steam piping elbows after long-term operation

The degree of degradation of ferritic-pearlitic steels is assessed by describing the size, dispersion and distribution of carbides along the grain boundaries, grain growth and the occurrence of microcracks. The article reports the results of the microstructural assessment of primary steam pipeline elbows made of 13HMF steel. Digital image analysis of matrix replicas was performed. It included the classification of microstructures in terms of pearlite/bainite change classes (fragmentation of cementite plates, spheroidization, coagulation) and the evaluation of carbide precipitation processes and damage processes (presence of isolated oriented creep pores and microcracks). The perlite/ bainite areas were found to disappear completely after long-term operation

Room temperature spin relaxation in GaAs/AlGaAs multiple quantum wells

We have explored the dependence of electron spin relaxation in undoped GaAs/AlGaAs quantum wells on well width (confinement energy) at 300 K. For wide wells, the relaxation rate tends to the intrinsic bulk value due to the D'yakonov-Perel (DP) mechanism with momentum scattering by phonons. In narrower wells, there is a strong dependence of relaxation rate on well width, as expected for the DP mechanism, but also considerable variation between samples from different sources, which we attribute to differences in sample interface morphology. (C) 1998 American Institute of Physics. [S0003-6951(98)02541-8].</p