Quantum Wave-Particle Duality in Free-Electron-Bound-Electron Interaction.

We present a comprehensive relativistic quantum-mechanical theory for interaction of a free electron with a bound electron in a model, where the free electron is represented as a finite-size quantum electron wave packet (QEW) and the bound electron is modeled by a quantum two-level system (TLS). The analysis reveals the wave-particle duality nature of the QEW, delineating the point-particle-like and wavelike interaction regimes and manifesting the physical reality of the wave function dimensions when interacting with matter. This QEW size dependence may be used for interrogation and coherent control of superposition states in a TLS and for enhancement of cathodoluminescence and electron energy-loss spectroscopy in electron microscopy.

The decision-making and learning roles of a professional social network: The case of a family physicians' network.

Purpose: This research was aimed at studying the evolution and roles of the Israeli physicians' professional social network as perceived by the members of the network.

Methodology: The research examined a case study of RAMBAM/KEHILA professional networks, applying both qualitative and quantitative methods for establishing a grounded theory.

Findings: Physicians want to be part of their professional community and consider the network as a place where the "wisdom of the crowd" exists.

Pulsed Laser Deposition of SWCNTs on Carbon Fibres: Effect of Deposition Temperature.

Single wall carbon nanotubes (SWCNTs) were grown on either sized or desized carbon fabric in a self-designed reactor by Pulsed Laser Deposition (PLD). The uniqueness of the PLD system lies, among other things, in the ability to keep the substrate at a low temperature, compared to the 1100 °C needed for the SWCNTs synthesis, thus, rendering it undamaged. Samples were placed at different positions on a cold finger (CF), where a temperature gradient develops, in the range 25-565 °C.

Evaluating teamwork among medical staff: How to measure and compare aspects of the team mental models of doctors and nurses.

Shared perceptions of a task among those responsible for its completion are important for achieving successful outcomes. This study proposes a framework for eliciting various aspects of team members' "mental models" (TMMs) of complex medical tasks. The intention is to provide 'proof of concept' for a methodology to measure similarities and differences between team members' perceptions of selected attributes of the task.

Hybrid Sol-Gel Superhydrophobic Coatings Based on Alkyl Silane-Modified Nanosilica.

Hybrid sol-gel superhydrophobic coatings based on alkyl silane-modified nanosilica were synthesized and studied. The hybrid coatings were synthesized using the classic Stöber process for producing hydrophilic silica nanoparticles (NPs) modified by the in-situ addition of long-chain alkyl silanes co-precursors in addition to the common tetraethyl orthosilicate (TEOS). It was demonstrated that the long-chain alkyl substituent silane induced a steric hindrance effect, slowing the alkylsilane self-condensation and allowing for the condensation of the TEOS to produce the silica NPs.

Erratum to "Digital wayfinding systems in hospitals: A qualitative evaluation based on managerial perceptions and considerations before and after implementation" [Appl. Ergon. 90 (2020) 103260].

Despite the benefits that digital wayfinding systems offer hospital visitors and patients as well as the hospitals themselves, their actual presence in hospitals is low. This study, carried out in twenty hospitals, presents an evaluation of these systems. Interviews with hospital managers (with and without systems) indicate considerations and evidence-based information that are new to the literature such as reducing task complexity and overall user stress and anxiety; enhancing user control and empowerment; decreasing the amount of time medical staff must devote to providing directions to patients; and reducing rate of delayed and missed appointments.

Poly (Dimethylsiloxane) Coating for Repellency of Polar and Non-Polar Liquids.

The wettability of poly (dimethylsiloxane) (PDMS) coating on plasma-treated glass was studied at room temperature using polar and non-polar liquids. The wettability was investigated regarding the liquids' surface tensions (STs), dielectric constants (DCs) and solubility parameters (SPs). For polar liquids, the contact angle (CA) and contact angle hysteresis (CAH) are controlled by the DCs and non-polar liquids by the liquids' STs.

Electrical Properties Enhancement of Carbon Nanotube Yarns by Cyclic Loading.

Carbon nanotube yarns (CNTYs) possess low density, high conductivity, high strength, and moderate flexibility. These intrinsic properties allow them to be a preferred choice for use as conductive elements in high-performance composites. To fully exploit their potential as conductive reinforcing elements, further improvement in their electrical conductivity is needed.

The mentally ill and how they were perceived in young Israel.

The article constitutes a widely researched account of mental patients and their perceptions in the early history of Israel, especially its second decade. It focuses on a single generation, which experienced the traumas of war in Europe, followed by insecurity in Israel's struggle for independence. The article claims that in the 1960s many suffered from depression, reflected in a record number of patients in mental hospitals and mentally sick people, mostly of European origin.

Technical Note: Noninvasive mid-IR fiber-optic evanescent wave spectroscopy (FEWS) for early detection of skin cancers.

Purpose: Melanoma is the most lethal of the three primary skin cancers, including also basal cell carcinoma (BCC) and squamous cell carcinoma (SCC), which are less lethal. The accepted diagnosis process involves manually observing a suspicious lesion through a Dermascope (i.e.

Polymers in the Medical Antiviral Front-Line.

Antiviral polymers are part of a major campaign led by the scientific community in recent years. Facing this most demanding of campaigns, two main approaches have been undertaken by scientists. First, the classic approach involves the development of relatively small molecules having antiviral properties to serve as drugs.

Hybrid Antibacterial and Electro-conductive Coating for Textiles Based on Cationic Conjugated Polymer.

The development of efficient synthetic strategies for incorporating antibacterial coatings into textiles for pharma and medical applications is of great interest. This paper describes the preparation of functional nonwoven fabrics coated with polyaniline (PANI) via in situ polymerization of aniline in aqueous solution. The effect of three different monomer concentrations on the level of polyaniline coating on the fibers comprising the fabrics, and its electrical resistivities and antibacterial attributes, were studied.

Strong, tough and bio-degradable polymer-based 3D-ink for fused filament fabrication (FFF) using WS nanotubes.

WS inorganic nanotubes (WS-NT) have been incorporated into Polylactic Acid (PLA) by melt mixing to create a bio-degradable, mechanically reinforced nanocomposite filament. The filament was then processed by Fused Filament Fabrication (FFF) 3D-printer, and the morphology and characteristics before and after printing were compared. We found that addition of WS-NT to PLA by extrusion mixing increases the elastic modulus, yield strength and strain-at-failure by 20%, 23% and 35%, respectively.

Full-Spectrum Extract Microdepots Support Controlled Release of Multiple Phytocannabinoids for Extended Therapeutic Effect.

The therapeutic effect of the plant largely depends on the presence and specific ratio of a spectrum of phytocannabinoids. Although prescription of medicinal for various conditions constantly grows, its consumption is mostly limited to oral or respiratory pathways, impeding its duration of action, bioavailability, and efficacy. Herein, a long-acting formulation in the form of melt-printed polymeric microdepots for full-spectrum cannabidiol (CBD)-rich extract administration is described.

Developing ReApp: an emotion regulation mobile intervention for intergroup conflict.

People living in areas of intractable conflicts experience extreme negative emotions which ultimately lead to support of aggressive policies. Emotion regulation and particularly cognitive reappraisal has been found to be effective in reducing negative emotional experiences and shifting policy preferences. Therefore, it is important to develop scalable, evidence-based interventions aimed at regulating negative emotions in such contexts.

Strong bonding of corneal incisions using a noncontact fiber-optic laser soldering method.

Suturing of corneal incisions requires significant skill. We demonstrate a noncontact method that will simplify the bonding process. 5-mm-long penetrating vertical and slanted incisions were made in corneas of eyes, extracted from dead piglets.

Impact of N, P, K, and Humic Acid Supplementation on the Chemical Profile of Medical Cannabis ( L).

Mineral nutrition is a major factor affecting plant growth and function. Increasing evidence supports the involvement of macro and micronutrients in secondary metabolism. The use of the appropriate nutritional measures including organic fertilizers, supplements, and biostimulants is therefore a vital aspect of medicinal plant production including medical cannabis.

The role of various transporters in the placental uptake of ofloxacin in an in vitro model of human villous trophoblasts.

Introduction: Six years after the US Food and Drug Administration approval of the broad-spectrum antibiotic ofloxacin (OFLX), the chiral switching of this racemic mixture resulted in a drug composed of the L-optical isomer levofloxacin (LVFX). Since both fluoroquinolones (FQs) were introduced to the pharmaceutical market, they have been widely prescribed by physicians, with careful administration during pregnancy and breastfeeding. Therefore, the role of the influx and efflux placental transporters in the concentrations of these drugs that permeate through human placental barrier model was investigated in this study.

Oscillations in the mean transition time of a particle scattered on a double slit potential.

Scattering through a double slit potential is one of the most fundamental problems in quantum mechanics. It is well understood that due to the superposition of amplitudes, one observes a spatial interference pattern in the scattered wavefunction reflecting the superposition of amplitudes coming from both slits. However, the effect of the double slit on the mean time it takes to traverse the slit has not been considered previously.

Catalytic Functionalization of C-H Bonds of Azulene by Carbene/Nitrene Incorporation.

The selective catalytic functionalization of the C-H bond of azulene upon incorporation of carbene or nitrene units with metal-based catalysts is described. Ethyl diazoacetate or ArI═NTs are employed as carbene or nitrene precursors, respectively. The azulene derivatives are subsequently employed as building blocks toward more complex structures with potential use as biodegradable materials.

A group-level approach to analyzing participative ergonomics (PE) effectiveness: The relationship between PE dimensions and employee exposure to injuries.

Most studies concerned with participative ergonomic (PE) interventions, focus on organizational rather than group level analysis. By implementing an intervention at a manufacturing plant, the current study, utilizing advanced information systems, measured the effect of line-supervisor leadership on employee exposure to risks. The study evaluated which PE dimensions (i.

Enhancement of mechanical and electrical properties of continuous-fiber-reinforced epoxy composites with stacked graphene.

Impregnation of expandable graphite (EG) after thermal treatment with an epoxy resin containing surface-active agents (SAAs) enhanced the intercalation of epoxy monomer between EG layers and led to further exfoliation of the graphite, resulting in stacks of few graphene layers, so-called "stacked" graphene (SG). This process enabled electrical conductivity of cured epoxy/SG composites at lower percolation thresholds, and improved thermo-mechanical properties were measured with either Kevlar, carbon or glass-fiber-reinforced composites. Several compositions with SAA-modified SG led to higher dynamic moduli especially at high temperatures, reflecting the better wetting ability of the modified nanoparticles.

Wireless power transfer for a pacemaker application.

An artificial pacemaker is a small medical device that uses electrical impulses, delivered by electrodes contracting the heart muscles, to regulate the beating of the heart. The pacemaker is implanted under the skin, and uses for many years regular non-rechargeable batteries. However, the demand for rechargeable batteries in pacemakers increased, and the aim of this work is to design an efficient charging system for pacemakers.