Czynniki ryzyka i czynniki chroniące związane z zachowaniami problemowymi – przegląd badań przeprowadzonych w Polsce

Publikacja wydana w ramach projektu „Terapia przez rozwój”. Program rozwoju sieci placówek dla młodzieży zagrożonej przedwczesnym wypadnięciem z systemu oświaty. Projekt współfinansowany ze środków Unii Europejskiej w ramach Europejskiego Funduszu Społeczneg

ELECTRONIC STRUCTURE OF GE IN SIO2

It is argued that one-electron theory is insufficient to account for the origin of the observed spectra of Ge in SiO2 ( alpha -quartz) crystals. A simple model is employed to show that impurity states responsible for ESR spectra of SiO2:Ge are stabilised by many-electron polarisation effects associated with the Ge atom itself and its immediate oxygen neighbour

Full modelling of high-intensity focused ultrasound and thermal heating in the kidney using realistic patient models

Objective: High-intensity focused ultrasound (HIFU) therapy can be used for non-invasive treatment of kidney (renal) cancer, but the clinical outcomes have been variable. In this study, the efficacy of renal HIFU therapy was studied using nonlinear acoustic and thermal simulations in three patients. Methods: The acoustic simulations were conducted with and without refraction in order to investigate its effect on the shape, size and pressure distribution at the focus. The values for the attenuation, sound speed, perfusion and thermal conductivity of the kidney were varied over the reported ranges to determine the effect of variability on heating. Furthermore, the phase aberration was studied in order to quantify the underlying phase shifts using a second order polynomial function. Results: The ultrasound field intensity was found to drop on average 11.1 dB with refraction and 6.4 dB without refraction. Reflection at tissue interfaces was found to result in a loss less than 0.1 dB. Focal point splitting due to refraction significantly reduced the heating efficacy. Perfusion did not have a large effect on heating during short sonication durations. Small changes in temperature were seen with varying attenuation and thermal conductivity, but no visible changes were present with sound speed variations. The aberration study revealed an underlying trend in the spatial distribution of the phase shifts. Conclusion: The results show that the efficacy of HIFU therapy in the kidney could be improved with aberration correction. Significance: A method is proposed by which patient specific pre-treatment calculations could be used to overcome the aberration and therefore make ultrasound treatment possible.Comment: Journal paper, IEEE Transactions on Biomedical Engineering (2018

Experimental Approaches at Linear Colliders

This report summarises the activity of the E3 working group "Experimental Approaches at Linear Colliders". The group was charged with examining critically the physics case for a linear collider of energy of order 1 TeV as well as the cases for higher energy machines, assessing the performance requirements and exploring the viability of several special options. In addition it was asked to identify the critical areas where R&D is required.Comment: 21 pages, 13 figures, to appear in the Proceedings of the APS / DPF / DPB Summer Study on the Future of Particle Physics (Snowmass 2001), Snowmass, Colorado, 30 Jun - 21 Jul 200

Sustainable consumption: measurement problems

Celem pracy jest przedstawienie problematyki pomiaru zrównoważonej konsumpcji na podstawie najnowszych badań w dziedzinie pomiaru zrównoważonego rozwoju. Jednym z celów europejskiej polityki ochrony środowiska jest zrównoważona produkcja i konsumpcja (SCP –Sustainable Consumption and Production). Sustainable Consumption and Production zajmuje ważne miejsce w tzw. zielonej gospodarce (green economy), czyli takim rozwoju społeczno-gospodarczym, który w bardziej efektywny sposób realizuje cele zrównoważonego rozwoju. W pracy poddano analizie dostępną literaturę na temat mierników zrównoważonej konsumpcji zarówno polsko-, jak i angielskojęzyczną. W celu omówienia pomiaru postępu na drodze zrównoważonej konsumpcji wykorzystano m.in. raporty Europejskiej Agencji Środowiska (EEA – European Environment Agency), dane Eurostatu oraz prace Głównego Urzędu Statystycznego.The aim of the study is to present the issue of measuring sustainable consumption in the light of the latest research into sustainable development. Sustainable consumption and production (SCP) is one of the objectives of EU environmental policy. SCP occupies animportant place in the so-called green economy, i.e. socio-economic development that meets the objectives of sustainability more effectively. This paper examines the available literature, in both Polish and English, on measurement of sustainable consumption. In order to assess the progress towards reaching sustainable consumption, the author uses, inter alia, the reports of the European Environment Agency (EEA), Eurostat reports and the research outcomes obtained by the Polish Central Statistical [email protected] Barbara Jaros – Instytut Ekologii Terenów Uprzemysłowionych w Katowicac