Evaluation of Telephone Visits in Primary Care: Satisfaction of Pediatricians and Family Physicians and Their Perceptions of Quality of Care and Safety.

Telehealth has accelerated since the outbreak of the COVID-19 virus. As telephone visits become more common, it is important to examine the challenges involved in using this modality of care. In this study, we examined family physicians' and pediatricians' perceptions regarding three aspects of the use of telephone visits: quality of care, safety of care, and physicians' satisfaction.

Acute myocarditis associated with anti-COVID-19 vaccination.

Novel anti-coronavirus disease 2019 mRNA vaccines are rapidly implemented worldwide. Therefore, attention should be given to potentially life-threatening adverse reactions. We report on three young male patients, who developed acute myocarditis 2 days after receiving the second dose of the BNT162b2 vaccine.

A structured graduated protocol with heat denatured eggs in the treatment of egg allergy.

Background: Most children with egg allergy (EA) can tolerate extensively heated and baked egg (EHBE). Consumption of EHBE may promote faster resolution of EA; however, no consensus exists as to the required amounts and treatment protocols.

Objective: To evaluate the efficacy and safety of a structured graduated exposure protocol (SGEP) with EHBE in promoting tolerance to eggs in EA children under 2 years of age.

[HILLEL YAFFE MEDICAL CENTER - SIXTY YEARS OF ADVANCEMENT].

The Hillel Yaffe Medical Center began its journey sixty years ago. Since its early days, the hospital's dedicated teams have struggled to bridge the gaps between limited resources and their uncompromising desire to meet patients' needs. Today, Hillel Yaffe Medical Center possesses more than five hundred beds in approximately eighty departments and units and dozens of ambulatory clinics.

A Structured Gradual Exposure Protocol to Baked and Heated Milk in the Treatment of Milk Allergy.

Objective: To evaluate the efficacy and safety of a structured gradual exposure protocol (SGEP) with extensively heated and baked milk in promoting allergy resolution in children with cow milk allergy (CMA).

Study Design: In a case control study, children with CMA aged 1-4 years who were treated with SGEP including extensively heated and baked milk, were compared with children treated with strict avoidance. Data were collected from medical records and from validated telephone questionnaires.

[Telemedicine: a novel service in pediatric emergency care].

Introduction: Telemedicine is a field that deals with monitoring and caring for patients who are physically apart from the caregivers, so they cannot communicate without technological means. The use of telemedicine has been recognized by a number of official organizations worldwide. This article reviews a unique service, "pediatrician online", provided by Clalit HMO, through Medtrix Ltd, with Schneider Children's Hospital specialists' supervision.

Extracorporeal Membrane Oxygenation as a Resuscitation Measure in the Pediatric Emergency Department.

Background: Extracorporeal membrane oxygenation (ECMO) may serve as a bridge to regain cardiac function in refractory resuscitation. However, its use has so far been limited owing to low availability, especially in emergency departments.

Objectives: To describe two children with acute myocarditis successfully treated with ECMO in the emergency department of a tertiary pediatric medical center.

C-Reactive protein levels in children with primary herpetic gingivostomatitis.

Background: C-reactive protein (CRP) is often used to distinguish bacterial from viral infections. However, the CRP level does have implications, which depend on the clinical scenario and are still under research.

Objectives: To evaluate the distribution of CRP levels in children with primary herpetic gingivostomatitis.

Manipulating polarization of light with ultrathin epsilon-near-zero metamaterials.

One of the basic functionalities of photonic devices is the ability to manipulate the polarization state of light. Polarization components are usually implemented using the retardation effect in natural birefringent crystals and, thus, have a bulky design. Here, we have demonstrated the polarization manipulation of light by employing a thin subwavelength slab of metamaterial with an extremely anisotropic effective permittivity tensor.

Measuring the refractive index around intersubband transition resonance in GaN/AlN multi quantum wells.

We present the direct measurement of the refractive index distribution (spectral dispersion) arising from an intersubband transition in GaN/AlN multi quantum wells structure. The measurement is carried out through a novel interferometric technique. The measured interferogram yields a change in the refractive index varying from -5 × 10(-3) to 6 × 10(-3) as a function of the wavelength, introduced by the intersubband resonance at 1.

Indistinguishable photon pairs from independent true chaotic sources.

Indistinguishability of events in quantum mechanics is manifested by interference between their probability amplitudes. We report a unique kind of interference occurring between indistinguishable events of photon-pair emission, where each photon of the pair is emitted from a distinct true chaotic light source and has a different energy. The indistinguishability results in an interference which is observed as an ultrafast modulation of the second-order coherence function, measured on a femtosecond time scale by two-photon absorption in a semiconductor photomultiplier tube.

Light emission rate enhancement from InP MQW by plasmon nano-antenna arrays.

Arrays of gold single-strip and double-strip nano-antennas, with resonance in the wavelength range of 1200-1600 nm, were fabricated on the top of InGaAs/InP multi quantum well structure. Photo-luminescence from the quantum-wells was measured and shown to be enhanced by a factor of up to 9, with maximum enhancement wavelength corresponding to the nano-antennas resonance. Emission enhancement is attributed to the coupling of emitting charge-carriers to the plasmonic nano-antennas, causing an estimated increase in the radiative recombination rate by a factor of ~25, thus making it dominant over non-radiative recombination.

Resonances on-demand for plasmonic nano-particles.

A method for designing plasmonic particles with desired resonance spectra by exploiting the interaction of local geometry with surface charge distribution and applying evolutionary algorithm is presented. The method is based on repetitive perturbations of an initial particle's shape while calculating the eigenvalues of the various quasistatic resonances. Novel family of particles with collocated dipole-quadrupole resonances was designed, as an example for the unique power of the method.

Ultrafast three-photon counting in a photomultiplier tube.

We demonstrate experimentally ultrafast three-photon counting by three-photon absorption in a GaAsP photomultiplier tube at the wavelength range of 1800-1900 nm, and analyze its sensitivity and time response. Pulse energy of ∼500 fJ is shown to be detectable for ultrafast 170 fs pulses. The presented three-photon counter may serve as a unique tool for ultrafast quantum state characterization as well as for ultrasensitive third-order temporal measurements.

Plasmonic resonance effects for tandem receiving-transmitting nanoantennas.

A nanoplasmonic "transceiver" was assembled to examine the efficiency of coupled plasmonic antennas and their resonance interactions. In particular, plasmonic focusing receiver antenna coupled to transmitting annular antenna having a short central plasmonic wire was measured. The receiver collected incoming radially polarized light and efficiently focused and coupled it to a rear side transmitter comprised of a short resonant plasmonic wire and annular aperture.

Ultrafast pulse compression by semiconductor two-photon gain.

We demonstrate experimentally the compression of femtosecond-scale pulses by two-photon gain in a compact electrically driven AlGaAs waveguide. Dynamic control of the pulse width from 240 to 140 fs is achieved by varying the current injection levels--in good agreement with the calculations. The pulse width is measured by a high-sensitivity intensity autocorrelator based on two-photon absorption in a GaAs photomultiplier tube.

Measurement of optical two-photon gain in electrically pumped AlGaAs at room temperature.

We demonstrate experimentally two-photon gain in semiconductor structures, shown previously only in dilute atomic systems. Two-photon gain is directly observed and characterized in electrically pumped room-temperature semiconductor devices, in good agreement with theory. The semiconductor structure was designed to enhance the two-photon interaction and reduce parasitic effects.

Community-associated methicillin-resistant Staphylococcus aureus infections in Israel.

Background: Community-associated methicillin-resistant Staphylococcus aureus infections are increasingly being documented worldwide. In Israel, however, CA-MRSA infections have not yet been reported, so awareness among physicians may be low.

Objective: To alert physicians to the possibility of CA-MRSA infection, which necessitates a distinct therapeutic approach.

Cascadable and reconfigurable photonic logic gates based on linear lightwave interference and non-linear phase erasure.

Feasibility of cascading and reconfiguring a pair of linear-nonlinear all-optical logic gate structures is experimentally demonstrated using RF photonics. Progress in highly integrated O/E/O repeaters over Si/InP hybrid platforms enables large-scale reconfigurable gate arrays.

Plasmonic nanoantennas for broad-band enhancement of two-photon emission from semiconductors.

We demonstrate experimentally and theoretically a broad-band enhancement of the spontaneous two-photon emission from AlGaAs at room temperature by plasmonic nanoantenna arrays fabricated on the semiconductor surface. Plasmonic structures with inherently low quality factors but very small effective volumes are shown to be optimal. A 20-fold enhancement was achieved for the entire antenna array, corresponding to an enhancement of nearly 3 orders of magnitude for charge carriers emitting at the near field of a plasmonic antenna.

Ultrafast partial measurement of fourth-order coherence by HBT interferometry of upconversion-based autocorrelation.

We introduce, analyze, and experimentally demonstrate a compact semiconductor-based scheme for a femtosecond-scale partial fourth-order coherence g((4)) measurements. The scheme is based on a start-stop photon-counting Hanbury Brown and Twiss (HBT) interferometry of an upconversion-based Michelson-interferometer autocorrelation. The experimental realization employs second-harmonic generation in a semiconductor quantum-well structure, which may be further integrated with the HBT setup as a miniature photonic circuit, allowing compact characterization devices for photon-pair statistics in quantum photonics and quantum information processing.

All-optical linear reconfigurable logic with nonlinear phase erasure.

We introduce a novel all-optical logic architecture whereby the gates may be readily reconfigured to reprogram their logic to implement (N)AND/(N)OR/X(N)OR. A single gate structure may be used throughout the logic circuit to implement multiple truth tables. The reconfiguration is effected by an optical reference signal.

Electrically induced two-photon transparency in semiconductor quantum wells.

We demonstrate experimentally two-photon transparency, achieved by current injection into a semiconductor quantum-well structure which exhibits two-photon emission. The two-photon induced luminescence is progressively reduced by the injected current, reaching the point of two-photon transparency-a necessary condition for semiconductor two-photon gain and lasing. These results agree with our calculations.

Physiology and pathophysiology of the basal ganglia-thalamo-cortical networks.

Low-frequency resting tremor is one of the cardinal signs of Parkinson's disease (PD) and occurs also in some of its animal models. Current physiological studies and models of the basal ganglia indicate that changes of discharge pattern and synchronization of basal ganglia neurons rather than modification in their discharge rate are crucial to the pathophysiology of PD. However, parkinsonian tremor is not strictly correlated with the synchronous oscillations in the basal ganglia networks.

Encoding by response duration in the basal ganglia.

Several models have suggested that information transmission in the basal ganglia (BG) involves gating mechanisms, where neuronal activity modulates the extent of gate aperture and its duration. Here, we demonstrate that BG response duration is informative about a highly abstract stimulus feature and show that the duration of "gate opening" can indeed be used for information transmission through the BG. We analyzed recordings from three BG locations: the external part of the globus pallidus (GPe), the substantia nigra pars reticulata (SNr), and dopaminergic neurons from the substantia nigra pars compacta (SNc) during performance of a probabilistic visuomotor task.