We demonstrate that the ionic current through a solid-state nanopore can be used to measure at single nanometer resolution the three-dimensional intensity profile of a laser directly in the focus of a microscope objective. We find a linear dependence of the ionic current on the incident laser power since the laser-induced heat increases the temperature locally in the solution. Our data show a t...

It is known that the Zn doping profile in strained multi-quantumwell (MQW) InGaAsP lasers strongly affects the electro-optical characteristics of these devices and their temperature sensitivity. A systematic investigation of the excitation dependence of the active layer photoluminescence (PL) intensity from compressively strained InGaAsP MQW pin laser material with different Zn doping profiles ...

STUDY DESIGN A survey of pain intensity and psychological symptoms in patients with chronic neck pain after whiplash injury. OBJECTIVES To describe the pain and psychological profiles of patients with chronic whiplash. SUMMARY OF BACKGROUND DATA Reports in the literature mention a constellation of symptoms associated with chronic whiplash injury but no systematic survey using objective pati...

We present a method for unsupervised boundary classification by producing and analyzing intensity profiles. Each profile is created by sampling an ellipsoidal neighborhood of voxels oriented along the image gradient. The profile is analyzed via non-linear optimization to find the best fitting cumulative Gaussian. The parameters of the cumulative Gaussian parameterize the boundary directly yield...

BACKGROUND Sedentariness is one of the main cardiovascular risk factors. Aerobic exercise can reduce the risk; however, resistance training seems to be more effective in reducing cardiovascular risk. AIM To determine the metabolic effects of a 12 weeks resistance training program of high intensity and low volume in two groups of sedentary adult women. MATERIAL AND METHODS Forty women aged b...

Introduction: Potential clinical benefits of high-resolution imaging using intravascular probes is often limited due to the image intensity distortion caused by the signal inhomogeneity associated with the placement of the probe. Methods developed for the phased-array and other surface coils are not as successful for intravascular imaging since the conducting structures of the RF-receiving devi...

We describe a unique approach for extracting the temporal profile of ultrashort laser pulses from typical autocorrelation measurements. The use of the constraint that intensity is a nonnegative quantity enables an iterative numerical algorithm to reconstruct pulse shapes in a one-dimensional procedure. With the reconstruction of the intensity profile, the Gerchberg–Saxton algorithm can be used ...

This study correlates the time-intensity profile of a magnetohydrodynamic (MHD) shock with the corresponding solar energetic oxygen for a coronal mass ejection (CME) event that occurred on October 28, 2003. The intensity of MHD shock, in terms of Mach number, is simulated using a 1.5D MHD code, whereas the solar energetic oxygen flux is observed by the Solar Isotope Spectrometer (SIS) on board ...

We present a theoretical method to calculate the small angle neutron scattering profile of nucleic acid structures in solution. Our approach is sensitive to the sequence and the structure of the nucleic acid. In order to test our approach, we apply this method to the calculation of the experimental scattered intensity of the decamer d(CCAACGTTGG)2 in H2O. This sequence was specifically chosen f...

OBJECTIVES Observational studies have reported an association among physical activity, fitness and lipid profile in youth. The purpose of this study was to analyse the effect of a school-based intervention focused on increasing the number and intensity of Physical Education (PE) sessions a week, on adolescents' lipid profile. METHODS A 4-month group-randomized controlled trial was conducted i...