Nurses' attitudes toward caring for terminally ill neonates and their families in Iran: a cross-sectional study.

Providing care for terminally ill neonates is an important issue in NICUs. This research aimed to determine nurses' attitudes toward providing care for terminally ill neonates and their families. A total of 138 nurses working in neonatal intensive care units (NICUs) affiliated to Tehran University of Medical Sciences participated in this cross-sectional study via convenience sampling in 2019.

Single PEDOT Catalyst Boosts CO Photoreduction Efficiency.

Atmospheric pollution demands the development of solar-driven photocatalytic technologies for the conversion of CO into a fuel; state-of-the-art cocatalyst systems demonstrate conversion efficiencies currently unattainable by a single catalyst. Here, we upend the status quo demonstrating that the nanofibrillar conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) is a record-breaking single catalyst for the photoreduction of CO to CO. This high catalytic efficiency stems from a highly conductive nanofibrillar structure that significantly enhances surface area, CO adsorption and light absorption.

One-step aerosol synthesis of a double perovskite oxide (KBaTeBiO) as a potential catalyst for CO photoreduction.

This study presents a comprehensive investigation on the aerosol synthesis of a semiconducting double perovskite oxide with a nominal composition of KBaTeBiO6, which is considered as a potential candidate for CO2 photoreduction. We demonstrate the rapid synthesis of the multispecies compound KBaTeBiO6 with extremely high purity and controllable size through a single-step furnace aerosol reactor (FuAR) process. The formation mechanism of the perovskite through the aerosol route is investigated using thermogravimetric analysis to identify the optimal reference temperature, residence time and other operational parameters in the FuAR synthesis process to obtain highly pure KBaTeBiO6 nanoparticles.

Spectroscopic investigations of electron and hole dynamics in MAPbBr perovskite film and carrier extraction to PEDOT hole transport layer.

Organometallic halide perovskite (MAPPbBr3), Rust-based Vapor Phase Polymerization (RVPP)-PEDOT hole transporting layers and (RVPP-PEDOT)/MAPPbBr3 dual-layer, deposited on fluorine doped tin oxide glass were studied at room temperature using steady-state absorption, time-resolved photoluminescence imaging and femtosecond time-resolved absorption spectroscopy. Application of these techniques in conjunction with diverse excitation intensities allowed determination of various optoelectronic properties of the perovskite film and the time constant of the hole extraction process. Spectral reconstruction of the bandedge absorption spectrum using Elliot's formula enabled separation of the exciton band.

Concept analysis of human dignity in patient care: Rodgers' evolutionary approach.

Human dignity (HD) in patient care is an important concept in clinical ethics that has various definitions in existing literature. This study aimed at analyzing the concept of HD in patient care. To this end, Rodgers' evolutionary concept analysis was used.

Correlation between moral sensitivity and self-esteem in nursing personnel.

Nurses are continuously involved with ethical problems in their area of practice and need to possess a satisfactory level of moral sensitivity in order to be able to offer moral care. Additionally, they act as agents for proper management of ethical dilemmas and are therefore required to have high self-esteem. This study aimed to determine the correlation between moral sensitivity and self-esteem in nurses.

Mixed-mode oscillations in pyramidal neurons under antiepileptic drug conditions.

Subthreshold oscillations in combination with large-amplitude oscillations generate mixed-mode oscillations (MMOs), which mediate various spatial and temporal cognition and memory processes and behavioral motor tasks. Although many studies have shown that canard theory is a reliable method to investigate the properties underlying the MMOs phenomena, the relationship between the results obtained by applying canard theory and conductance-based models of neurons and their electrophysiological mechanisms are still not well understood. The goal of this study was to apply canard theory to the conductance-based model of pyramidal neurons in layer V of the Entorhinal Cortex to investigate the properties of MMOs under antiepileptic drug conditions (i.

BIOPHYSICAL PROPERTIES OF SUBTHRESHOLD RESONANCE OSCILLATIONS AND SUBTHRESHOLD MEMBRANE OSCILLATIONS IN NEURONS.

Subthreshold-level activities in neurons play a crucial role in neuronal oscillations. These small-amplitude oscillations have been suggested to be involved in synaptic plasticity and in determining the frequency of network oscillations. Subthreshold membrane oscillations (STOs) and subthreshold resonance oscillations (SROs) are the main constituents of subthreshold-level activities in neurons.

Iran diabetes research roadmap (IDRR) study: a preliminary study on diabetes research in the world and Iran.

Backgrounds: Diabetes is one of the most common metabolic disorders worldwide. This study aim was to provide detail analysis of diabetes research output and its trend in Iran as well as in the world and compare them.

Methods: Data was retrieved from PubMed database using a suitable search strategy and application of proper operator "AND", "OR" and "NOT".

Toxicity of cuprizone a Cu(2+) chelating agent on isolated mouse brain mitochondria: a justification for demyelination and subsequent behavioral dysfunction.

Multiple Sclerosis (MS) is a complex disease with an unknown etiology and no effective cure, despite decades of extensive research that led to the development of several partially effective treatments. In this study we aimed to investigate brain mitochondrial dysfunction in demyelination induced by cuprizone in mice. Cuprizone was used for induction of demyelination in mice through a diet containing 0.

Mesenchymal Stem Cells: Rising Concerns over Their Application in Treatment of Type One Diabetes Mellitus.

Type 1 diabetes mellitus (T1DM) is an autoimmune disorder that leads to beta cell destruction and lowered insulin production. In recent years, stem cell therapies have opened up new horizons to treatment of diabetes mellitus. Among all kinds of stem cells, mesenchymal stem cells (MSCs) have been shown to be an interesting therapeutic option based on their immunomodulatory properties and differentiation potentials confirmed in various experimental and clinical trial studies.

Mathematical modeling of subthreshold resonant properties in pyloric dilator neurons.

Various types of neurons exhibit subthreshold resonance oscillation (preferred frequency response) to fluctuating sinusoidal input currents. This phenomenon is well known to influence the synaptic plasticity and frequency of neural network oscillation. This study evaluates the resonant properties of pacemaker pyloric dilator (PD) neurons in the central pattern generator network through mathematical modeling.

Carbonaceous materials and their advances as a counter electrode in dye-sensitized solar cells: challenges and prospects.

Dye-sensitized solar cells (DSSCs) serve as low-costing alternatives to silicon solar cells because of their low material and fabrication costs. Usually, they utilize Pt as the counter electrode (CE) to catalyze the iodine redox couple and to complete the electric circuit. Given that Pt is a rare and expensive metal, various carbon materials have been intensively investigated because of their low costs, high surface areas, excellent electrochemical stabilities, reasonable electrochemical activities, and high corrosion resistances.

Effects of Vitamin D and Calcium Supplementation on Micro-architectural and Densitometric Changes of Rat Femur in a Microgravity Simulator Model.

Background: Revealing data on the role of vitamin D and calcium supplementation in bone health has led some to suggest that vitamin D and calcium treatment could also play a role in protecting bone against microgravity-induced mineral loss.

Objectives: The aim of the present study was to investigate the effects of vitamin D and calcium administration on microscopic and densitometric changes of rat femur in a Microgravity Simulator Model.

Materials And Methods: After designing a Microgravity Simulator Model, 14 rats were placed in the cages as follows: seven rats as osteoporosis group and seven rats received oral supplement of calcium/vitamin D as the treatment group.

Scalp block for awake craniotomy in a patient with a frontal bone mass: a case report.

"Anesthesia" for awake craniotomy is a unique clinical condition that requires the anesthesiologist to provide changing states of sedation and analgesia, to ensure optimal patient comfort without interfering with electrophysiologic monitoring and patient cooperation, and also to manipulate cerebral and systemic hemodynamics while guaranteeing adequate ventilation and patency of airways. Awake craniotomy is not as popular in developing countries as in European countries. This might be due to the lack of information regarding awake craniotomy and its benefits among the neurosurgeons and anesthetists in developing countries.

Comparative study of fig tree efficacy in the treatment of common warts (Verruca vulgaris) vs. cryotherapy.

Background: A traditional method for the treatment of warts in some rural areas of Iran comprises the use of fig tree (ficus carica) latex as a local treatment; however, there is no scientific evaluation of its efficacy.

Methods: A prospective, open right/left comparative trial of fig tree latex therapy vs. local standard of cryotherapy was carried out.