J Phys Condens Matter
December 2024
GdN is a ferromagnetic semiconductor which has seen increasing interest in the preceding decades particularly in the areas of spin- and superconducting- based electronics. Here we report a detailed computational and optical spectroscopy study of the electronic structure of stoichiometric and nitrogen vacancy doped GdN. Based on our calculations we provide the effective mass tensor for undoped GdN, and some indicative values for electron doped GdN.
View Article and Find Full Text PDFThis retrospective study analyzed 230 pediatric opioid exposures from a statewide poison control center over a 5-year period. Most exposures involved pharmaceutical opioids and children below 2-years-old. Narrative details were reviewed to identify uncommon sources of opioids involved in poisoning and highlight the need for tailored prevention strategies and guidance.
View Article and Find Full Text PDFJ Pediatr Gastroenterol Nutr
February 2024
Background: Ingestion of multiple high-powered neodymium rare-earth magnets poses a significant risk for gastrointestinal (GI) injury such as bowel perforation or ischemia. Given the rising incidence of rare earth magnetic ingestions and the corresponding increase in serious injuries in children, published guidelines recommend urgent endoscopic removal of all magnets within endoscopic reach in cases involving ingestions of two or more magnets.
Research Question: Do management patterns for multiple magnet ingestion align with current practice guidelines, and does hospital length of stay (LOS) differ based on the initial emergency department (ED) approach?
Methods: This is a retrospective chart review of consecutive patient encounters reported to the New Jersey Poison Information and Education System (NJPIES) between January 2021 and April 2022 involving multiple magnet ingestion.
We investigate the previously observed superconductivity in ferromagnetic SmN in the context of the breakdown of order between two magnetic phases. Nitrogen vacancy doped SmN[Formula: see text] is a semiconductor which lies in the intermediary between ferromagnetic SmN and anti-ferromagnetic Sm. Optical data reported here corroborate the prediction that electrical transport is mediated by Sm 4f defect states, and electrical transport measurements characterise the metal-insulator transition over the doping range.
View Article and Find Full Text PDFBackground: Poison Centers are uniquely positioned to respond to an unprecedented public health threat such as the COVID-19 pandemic, as fully operational 24-h hotlines already staffed with healthcare professionals.
Methods: On January 27, 2020 the New Jersey Poison Information and Education System (NJPIES) agreed to operate the New Jersey Coronavirus Hotline. Call patterns, subject matter, and staffing and infrastructure strategies that were implemented to meet the demand are described.
Objective: Hurricane Sandy made landfall in New Jersey on October 29, 2012, resulting in widespread power outages and gasoline shortages. These events led to potentially toxic exposures and the need for information related to poisons/toxins in the environment. This report characterizes the New Jersey Poison Information and Education System (NJPIES) call patterns in the days immediately preceding, during, and after Hurricane Sandy to identify areas in need of public health education and prevention.
View Article and Find Full Text PDFBackground: Opioid-associated ototoxicity is a known complication of opioid exposure, although the mechanism remains unclear. While historically most closely linked to heroin and oxycodone, evolving reports suggest that it may be a class effect of opioids. However, the evidence is limited to case reports.
View Article and Find Full Text PDFThe strongly correlated rare earth nitrides display unusual coupled magnetic, electronic and superconducting properties, with predicted topological states. However, their air-sensitiveness has prevented in-depth investigations of their properties. In this paper, we show that a 100 nm thick epitaxial samarium layer provides adequate passivation of 100 nm thick thin films of gadolinium nitride (GdN), the prototypical rare earth nitride, enabling ex-situ magnetic and structural characterizations.
View Article and Find Full Text PDFWe report an investigation of the ferromagnetic semiconductor rare earth nitrides (RENs) for their potential for cryogenic-temperature electronics and spintronics applications. We have identified ohmic contacts suitable for the device structures that demand electron transport through interface layers, and grown REN/insulator/REN heterostructures that display tunnelling characteristics, an enormous 400% tunneling magnetoresistance and a hysteresis promising their exploitation in non-volatile magnetic random access memory.
View Article and Find Full Text PDFRecently, there has been an increase in prescription drug abuse and related fatalities. Although opioid analgesics are commonly implicated, there have been significant increases in the prevalence of benzodiazepine exposures and overdoses. To describe national trends in pediatric benzodiazepine exposures from 2000 to 2015.
View Article and Find Full Text PDFA route to break molecular nitrogen (N) under mild conditions is demonstrated by N gas cracking on, and incorporation into, lanthanide films. Successful growth of lanthanide nitride thin films, made by evaporation of lanthanides in a partial N atmosphere at room temperature and pressure as low as 10 Torr, is confirmed using X-ray diffraction. In situ conductance measurements of pure lanthanide thin films exposed to N gas show an immediate surface reaction and a slower bulk reaction.
View Article and Find Full Text PDFBismuth subsalicylate (BSS) is the active ingredient in over-the-counter antacid and antidiarrheal medications. Coagulopathy in the setting of acetylsalicylic acid toxicity is well documented but not in setting of bismuth subsalicylate overuse. We present a case report of coagulopathy from BSS poisoning in a patient with underlying cirrhosis.
View Article and Find Full Text PDFIntroduction: Loperamide is a readily accessible nonprescription medication that is increasingly being used surreptitiously as an opioid substitute to alleviate the symptoms of acute opioid withdrawal. The objective of this study was to determine the clinical characteristics of patients with loperamide misuse and toxicity.
Methods: The ToxIC registry, a nationwide, prospectively collected cohort of patients evaluated by medical toxicologists was searched from November 2011-December 2016 for patients with loperamide exposure.
Magnetic skyrmions are topologically protected spin textures with great technological potential. These topologically non-trivial non-coplanar spin textures give rise to a topological Hall effect, enabling the purely electronic detection of magnetic skyrmions. We report a clear topological Hall effect in thin films of the the Heusler alloy MnCoAl, a ferromagnetic spin-gapless semiconductor, capped by a thin layer of Pd.
View Article and Find Full Text PDFWe report on the low-temperature fabrication of field-effect transistors by bridging pre-patterned electrodes using ZnO nanowires grown in situ, which operate without requiring post-growth processing or annealing. The devices show good performance using as-grown nanowires, with on-off ratios of 10 and threshold voltages of 2 V. Electron microscopy shows the field-dependent nanowires hierarchically nucleate from larger ZnO nanorods, and both are oriented along a common c-axis.
View Article and Find Full Text PDFPurpose: The American Association of Poison Control Center's annual reports demonstrate that acute fluoride exposure is not an uncommon occurrence. Despite its prevalence, there has been little published research on the topic in the last 10 years. The purpose of this study was to calculate the incidence of acute fluoride toxicity and lethality as it occurs in New Jersey and provide a descriptive epidemiology of acute fluoride exposures.
View Article and Find Full Text PDFEuropium nitride is semiconducting and contains nonmagnetic Eu3+, but substoichiometric EuN has Eu in a mix of 2+ and 3+ charge states. We show that at Eu2+ concentrations near 15%-20% EuN is ferromagnetic with a Curie temperature as high as 120 K. The Eu3+ polarization follows that of the Eu2+, confirming that the ferromagnetism is intrinsic to the EuN which is, thus, a novel diluted magnetic semiconductor.
View Article and Find Full Text PDFSoluble aggregated forms of amyloid-β protein (Aβ) have garnered significant attention recently for their role in Alzheimer's disease (AD). Protofibrils are a subset of these soluble species and are considered intermediates in the aggregation pathway to mature Aβ fibrils. Biological studies have demonstrated that protofibrils exhibit both toxic and inflammatory activities.
View Article and Find Full Text PDFCrit Care Nurs Clin North Am
March 2012
Critical care areas are fast moving, often chaotic, and therefore confusing, even frightening, to patients attempting to understand what has happened to them. The nurse acts to mitigate these reactions by understanding the range of possibilities that can occur with patients, including potential psychiatric issues, and serving as patient advocate to ensure that appropriate treatment is initiated. Certainly there may be other psychiatric problems not described in the preceding text.
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