Influence of Selected Sociodemographic and Cultural Factors on the Age of Sexual Initiation of Students from Polish Universities.

Sexuality is the one of the most important parts of human life. The aim of our study was to identify the factors influencing the onset and age of sexual initiation in students and drawing attention to the need to improve access to sexual education in Polish schools at a sufficiently high level. An original questionnaire with 31 questions was used for the study.

Threshold performance of pulse-operating quantum-cascade vertical-cavity surface-emitting lasers.

Quantum-cascade (QC) vertical-cavity surface-emitting lasers (VCSELs) could combine the single longitudinal mode operation, low threshold currents, circular output beam, and on-wafer testing associated with VCSEL configuration and the unprecedented flexibility of QCs in terms of wavelength emission tuning in the infrared spectral range. The key component of QC VCSEL is the monolithic high-contrast grating (MHCG) inducing light polarization, which is required for stimulated emission in unipolar quantum wells. In this paper, we demonstrate a numerical model of the threshold operation of a QC VCSEL under the pulse regime.

Analysis of Factors Influencing Polish Students' Opinions on Euthanasia.

Due to the continuous development of palliative care and methods of pain relief in the last moments of patients’ lives, we are faced with the question of how long we should take measures to delay inevitable death for, without providing prolonged therapy against the patient’s will. For terminally ill and people experiencing unimaginable suffering, euthanasia is considered as one of the possible options for a dignified farewell. The aim of the study was to determine the views on euthanasia in a group of students from Polish universities.

Mercy Procedure or a Nightmare? Attitude towards Pregnancy Termination among Polish University Students.

Worldwide, there are about 121 million unintended pregnancies per year. The aim of the study was to assess the attitudes in different groups of students from 40 Polish universities towards pregnancy termination. In total, 9686 university students (20.

Composite detection rate as an upper gastrointestinal endoscopy quality measure correlating with detection of neoplasia.

Background: Esophagogastroduodenoscopy (EGD) is commonly used diagnostic method with no widely accepted quality measure. We assessed quality indicator-composite detection rate (CDR)-consisting of detection of at least one of the following: cervical inlet patch, gastric polyp and post-ulcer duodenal bulb deformation. The aim of the study was to validate CDR according to detection rate of upper gastrointestinal neoplasms (UGN).

Analysis of High-Risk Sexual Behavior among Polish University Students.

High-risk sexual behavior consists of activities and habits that put a person at increased risk of sexually transmitted infections (STIs) or unplanned pregnancy. Poland is currently experiencing a problem with increased STI rates, largely due to poor sexual education. Our exploratory study aims to evaluate the sexual behavior of students attending universities across Poland.

Optimization of MBE Growth Conditions of InAlAs Waveguide Layers for InGaAs/InAlAs/InP Quantum Cascade Lasers.

We investigate molecular beam epitaxy (MBE) growth conditions of micrometers-thick InAlAs designed for waveguide of InGaAs/InAlAs/InP quantum cascade lasers. The effects of growth temperature and V/III ratio on the surface morphology and defect structure were studied. The growth conditions which were developed for the growth of cascaded InGaAs/InAlAs active region, e.

The first successful implantation of an intravenous AAIR pacemaker into autologous extracardiac lateral tunnel Fontan in the child.

Patients with a single ventricle have complex anatomy that requires staged palliation which is usually the Fontan procedure. This procedure has undergone a lot of modifications to improve hemodynamics. Despite these efforts, sinus node dysfunction (SND) and bradyarrythmias are still common complications after Fontan operation, therefore there is a need of pacemakers implantation.

Characterization of the superlattice region of a quantum cascade laser by secondary ion mass spectrometry.

Secondary ion mass spectrometry is applied to the depth profiling of the superlattice active region of lattice matched (∼9.2 μm) AlInAs/InGaAs/InP quantum cascade lasers. The developed measurement procedure is capable of characterizing the quality of each individual layer in the superlattice region, including layers as thin as 0.