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https://www.readbyqxmd.com/read/28819644/hfse2-and-zrse2-two-dimensional-semiconductors-with-native-high-%C3%AE%C2%BA-oxides
#1
Michal J Mleczko, Chaofan Zhang, Hye Ryoung Lee, Hsueh-Hui Kuo, Blanka Magyari-Köpe, Robert G Moore, Zhi-Xun Shen, Ian R Fisher, Yoshio Nishi, Eric Pop
The success of silicon as a dominant semiconductor technology has been enabled by its moderate band gap (1.1 eV), permitting low-voltage operation at reduced leakage current, and the existence of SiO2 as a high-quality "native" insulator. In contrast, other mainstream semiconductors lack stable oxides and must rely on deposited insulators, presenting numerous compatibility challenges. We demonstrate that layered two-dimensional (2D) semiconductors HfSe2 and ZrSe2 have band gaps of 0.9 to 1.2 eV (bulk to monolayer) and technologically desirable "high-κ" native dielectrics HfO2 and ZrO2, respectively...
August 2017: Science Advances
https://www.readbyqxmd.com/read/28819593/an-isolated-pure-dislocation-of-fifth-carpometacarpal-joint-case-report-and-review-of-literature
#2
Rashid Anjum, Amit Roy, Kamran Farooque, Vijay Sharma
INTRODUCTION: Isolated pure dislocation of the fifth carpometacarpal (CMC) joint is a very rare injury and classified depending on displacement of the metacarpal base. This rare injury is often difficult to recognize and is liable to be overlooked. The purpose of this case report is to present a patient with an isolated dislocation of the fifth CMC joint that was satisfactorily treated with closed reduction and ulnar gutter pop slab. CASE REPORT: A 21-year-old male presented with severe pain on the right carpus following a fall with injury to right hand...
March 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28819254/investigations-of-phase-transformation-in-monocrystalline-silicon-at-low-temperatures-via-nanoindentation
#3
Shunbo Wang, Hang Liu, Lixia Xu, Xiancheng Du, Dan Zhao, Bo Zhu, Miao Yu, Hongwei Zhao
Nanoindentations of monocrystalline silicon are conducted to investigate the phase transformation process at a temperature range from 292 K to 210 K. The load-displacement curves are obtained and the residual indents are detected by Raman spectra. MD simulations are also conducted to identify the phase state during nanoindentation. The results show that the low temperature has no influence on the generation of Si-II during loading process of indentation, but the phenomenon of pop-out is inhibited with the temperature decreasing...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818814/exposure-to-polybrominated-diphenyl-ethers-and-perfluoroalkyl-substances-in-a-remote-population-of-alaska-natives
#4
Samuel Byrne, Samarys Seguinot-Medina, Pamela Miller, Vi Waghiyi, Frank A von Hippel, C Loren Buck, David O Carpenter
BACKGROUND: Many Alaska Native communities rely on a traditional marine diet that contains persistent organic pollutants (POPs). The indoor environment is also a source of POPs. Polybrominated diphenyl ethers (PBDEs) and perfluoroalkyl substances (PFASs) are present both in the traditional diet and the home indoor environment. OBJECTIVES: We assessed exposure to PBDEs and PFASs among residents of two remote Alaska Native villages on St. Lawrence Island. Ninespine stickleback (Pungitious pungitious) and Alaska blackfish (Dallia pectoralis) were used to detect accumulation of these compounds in the local environment...
August 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28816558/effect-of-feedback-from-a-socially-interactive-humanoid-robot-on-reaching-kinematics-in-children-with-and-without-cerebral-palsy-a-pilot-study
#5
Yuping Chen, Sergio Garcia-Vergara, Ayanna M Howard
PURPOSE: To examine whether children with or without cerebral palsy (CP) would follow a humanoid robot's (i.e., Darwin) feedback to move their arm faster when playing virtual reality (VR) games. METHODS: Seven children with mild CP and 10 able-bodied children participated. Real-time reaching was evaluated by playing the Super Pop VR(TM) system, including 2-game baseline, 3-game acquisition, and another 2-game extinction. During acquisition, Darwin provided verbal feedback to direct the child to reach a kinematically defined target goal (i...
August 17, 2017: Developmental Neurorehabilitation
https://www.readbyqxmd.com/read/28816020/real-world-efficacy-and-safety-of-ombitasvir-paritaprevir-r-dasabuvir-ribavirin-in-genotype-1b-patients-with-hcv-liver-cirrhosis
#6
Carmen Monica Preda, Corneliu Petru Popescu, Cristian Baicus, Theodor Voiosu, Mircea Manuc, Corina Silvia Pop, Liana Gheorghe, Ioan Sporea, Anca Trifan, Marcel Tantau, Alina Tantau, Emanoil Ceausu, Doina Proca, Ileana Constantinescu, Simona Maria Ruta, Mircea Diculescu, Alexandru Oproiu
BACKGROUND: Direct antiviral agents (DAA) showed very good results in terms of efficacy and safety in clinical trials, but real life data are still needed in order to confirm this profile. MATERIAL AND METHODS: In Romania, through a nationwide government-funded programme in 2015-2016, approx.5800 patients with virus C liver cirrhosis received fully reimbursed DAA therapy with OBV/PTV/r+DSV+RBV for 12 weeks. We analysed a national prospective cohort enrolling the first 2070 patients, all with genotype 1b...
August 17, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28815283/risk-factors-for-recurrence-after-hysterectomy-plus-native-tissue-repair-as-primary-treatment-for-genital-prolapse
#7
Stefano Manodoro, Matteo Frigerio, Alice Cola, Federico Spelzini, Rodolfo Milani
INTRODUCTION AND HYPOTHESIS: Identification of risk factors for pelvic organ prolapse (POP) recurrence is crucial to provide adequate preoperative counselling and tailor surgical treatment. The aim of this retrospective study was to identify risk factors for recurrence in a large series of patients with POP treated with primary transvaginal native-tissue repair involving high uterosacral ligament suspension. METHODS: Postoperative descent of POP-Q stage 2 or higher in any compartment was considered as recurrence...
August 16, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28814860/quantum-dots-in-imaging-drug-delivery-and-sensor-applications
#8
REVIEW
Cristian T Matea, Teodora Mocan, Flaviu Tabaran, Teodora Pop, Ofelia Mosteanu, Cosmin Puia, Cornel Iancu, Lucian Mocan
Quantum dots (QDs), also known as nanoscale semiconductor crystals, are nanoparticles with unique optical and electronic properties such as bright and intensive fluorescence. Since most conventional organic label dyes do not offer the near-infrared (>650 nm) emission possibility, QDs, with their tunable optical properties, have gained a lot of interest. They possess characteristics such as good chemical and photo-stability, high quantum yield and size-tunable light emission. Different types of QDs can be excited with the same light wavelength, and their narrow emission bands can be detected simultaneously for multiple assays...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28814839/acceptance-and-usability-of-a-home-based-monitoring-tool-of-health-indicators-in-children-of-people-with-dementia-a-proof-of-principle-pop-study
#9
April Bcg Boessen, Joan Vermeulen, Luc P de Witte
BACKGROUND: Large-scale cohort studies are needed to confirm the relation between dementia and its possible risk factors. The inclusion of people with dementia in research is a challenge, however, children of people with dementia are at risk and are highly motivated to participate in dementia research. For technologies to support home-based data collection during large-scale studies, participants should be able and willing to use technology for a longer period of time. OBJECTIVE: This study investigated acceptance and usability of iVitality, a research platform for home-based monitoring of dementia health indicators, in 151 children of people with dementia and investigated which frequency of measurements is acceptable for them...
2017: Patient Preference and Adherence
https://www.readbyqxmd.com/read/28812025/baseline-characteristics-of-the-paediatric-observation-priority-score-in-emergency-departments-outside-its-centre-of-derivation
#10
Damian Roland, Fawaz Arshad, Tim Coats, Ffion Davies
OBJECTIVES AND BACKGROUND: Scoring systems in Emergency Departments (EDs) are rarely validated. This study aimed to examine the Paediatric Observation Priority Score (POPS), a method of quantifying patient acuity, in EDs in the United Kingdom, and determine baseline performance characteristics. METHODS: POPS was implemented in 4 EDs for children (ages of 0 to 16) with participants grouped into 3 categories: discharged from ED, discharged but with return within 7 days, and admitted for less or more than 24 hours...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28810991/posterior-cruciate-ligament-injuries-associated-with-military-survival-swim-training
#11
Michael S Crowell, John S Mason, Matthew A Posner, Chad A Haley
OBJECTIVES: Posterior cruciate ligament (PCL) injuries are relatively common injuries associated with athletic activities and high-energy trauma. Posterolateral corner (PLC) injuries frequently accompany injury to the PCL. Diagnosis can be challenging and requires a comprehensive history and physical examination. Patients frequently report vague, nonspecific symptoms and the mechanism of injury is often useful in localizing injured structures. Two of the more common mechanisms for PCL injury include a direct blow to the proximal anterior tibia with the knee flexed, as well as a significant knee hyperextension injury...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28808839/individuals-with-autism-have-higher-8-iso-pgf2%C3%AE-levels-than-controls-but-no-correlation-with-quantitative-assay-of-paraoxonase-1-serum-levels
#12
Bianca Pop, Alexandru-Ștefan Niculae, Tudor Lucian Pop, Andreea Liana Răchișan
Autism spectrum disorder (ASD) represents a very large set of neurodevelopmental issues with diverse clinical outcomes. Various hypotheses have been put forth for the etiology of autism spectrum disorder, including issues pertaining to oxidative stress. In this study, we conducted measurements of serum 8-Iso-Prostaglanding F2 α (8-iso-PGF2α, which is the results of non-enzimatically mediated polyunsaturated fatty acid oxidation) in a population of individuals with autism and a control group of age and sex matched controls...
August 14, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28806690/occurrence-and-distribution-of-halogenated-flame-retardants-in-an-urban-watershed-comparison-to-polychlorinated-biphenyls-and-organochlorine-pesticides
#13
Qian Wang, Barry C Kelly
Due to restrictions on polybrominated diphenyl ethers (PBDEs), market demand for alternative flame retardants is projected to increase, worldwide. Information regarding the environmental behavior of these compounds is limited. The present study involved field measurements of several alternative halogenated flame retardants (HFRs), along with PBDEs and legacy persistent organic pollutants (POPs) in surface water, bottom sediments and suspended particulate matter (SPM) within a highly urbanized watershed in Singapore...
August 11, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28806565/implications-of-biological-factors-on-accumulation-of-persistent-organic-pollutants-in-antarctic-notothenioid-fish
#14
J M Ríos, N B Lana, N F Ciocco, A Covaci, E Barrera-Oro, E Moreira, J C Altamirano
In the present study, the possible associations between selected persistent organic pollutants (POPs) and biological factors were assessed in different tissues of two Antarctic notothenioid fish: Notothenia rossii (NOR) and Trematomus newnesi (TRN) collected at Potter Cove, King George Island/Isla 25 de Mayo, South Shetland Islands. Specifically, association patterns between biological factors (body size, lipid content, body condition) and POP concentrations (polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane (DDT) and metabolites, polybrominated diphenyl ethers (PBDEs), and hexachlorocyclohexane (HCH), hexachlorobenzene (HCB), chlordanes (CHLs) and methoxylated polybrominated diphenyl ethers (MeO-PBDEs)), were explored by using two approaches: multivariate analyses (principal component analysis: PCA) and intraspecific correlations...
August 11, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28806556/persistent-organic-pollutants-in-fat-of-three-species-of-pacific-pelagic-longline-caught-sea-turtles-accumulation-in-relation-to-ingested-plastic-marine-debris
#15
Katharine E Clukey, Christopher A Lepczyk, George H Balazs, Thierry M Work, Qing X Li, Melannie J Bachman, Jennifer M Lynch
In addition to eating contaminated prey, sea turtles may be exposed to persistent organic pollutants (POPs) from ingesting plastic debris that has absorbed these chemicals. Given the limited knowledge about POPs in pelagic sea turtles and how plastic ingestion influences POP exposure, our objectives were to: 1) provide baseline contaminant levels of three species of pelagic Pacific sea turtles; and 2) assess trends of contaminant levels in relation to species, sex, length, body condition and capture location...
August 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28804498/feasibility-of-cervical-epidural-anesthesia-for-breast-cancer-surgery
#16
Manuel Wenk, Christina Massoth, Daniel M Pöpping, Michael Möllmann
BACKGROUND: Effects of perioperative cervical level neuraxial blocks on the dissemination of cancer metastases have become a matter of substantial interest. However, experience with these catheters has been limited and data on feasibility and efficacy is sparse. METHODS: Data from 39 patients scheduled to undergo breast cancer surgery while awake with a cervical epidural alone was retrospectively analyzed. RESULTS: In 26 patients (66,7%, 95% CI 51,7-81,7) the cervical epidural catheter was sufficient for surgery...
2017: Anesthesiology Research and Practice
https://www.readbyqxmd.com/read/28803433/distribution-of-serum-levels-of-persistent-organic-pollutants-heterocyclic-aromatic-amine-theoretical-intake-and-nutritional-cofactors-in-a-semi-rural-island-population
#17
Daniel Carrizo, Sarah F Brennan, Olivier P Chevallier, Jayne Woodside, Kevin M Cooper, Marie M Cantwell, Geraldine Cuskelly, Christopher T Elliott
Persistent organic pollutant (POP) exposure is strongly associated with negative health effects in humans. Heterocyclic aromatic amines (HAAs) are formed during high temperature cooking of foods (i.e. meat and fish). Human exposure to HAA is through food consumption and from similar food groups to POPs. A study of serum samples for POPs in a non-occupational exposed population (n = 149, age range 18-80 years, recruited in 2012) and comparison with estimated HAA daily intake calculations based on food diaries were undertaken...
August 12, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28803190/legacy-and-new-halogenated-persistent-organic-pollutants-in-polar-bears-from-a-contamination-hotspot-in-the-arctic-hudson-bay-canada
#18
R J Letcher, A D Morris, M Dyck, E Sverko, E J Reiner, D A D Blair, S G Chu, L Shen
A large and complex suite of 295 legacy and new halogenated persistent organic pollutants (POPs) were investigated in fat or liver tissue samples of polar bears collected in 2013-2014 from Southern (SHB) and Western (WHB) subpopulations of the Canadian Arctic contaminants hotspot of Hudson Bay. A total of 210 POPs were detected and/or quantifiable with some frequency in all fat or liver samples. POP profile and concentration differences were investigated both within (e.g. age and sex) and between the two subpopulations...
August 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28802104/results-of-the-second-national-forest-soil-inventory-in-germany-interpretation-of-level-and-stock-profiles-for-pcdd-f-and-pcb-in-terms-of-vegetation-and-humus-type
#19
Marchela Pandelova, Bernhard Henkelmann, Bernd M Bussian, Karl-Werner Schramm
Polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and polychlorinated biphenyls (PCBs) were detected in 86 humic topsoil layers and in a subset of 11 randomly selected top mineral forest soils at the depths of 0-5cm and 5-10cm collected from different federal states of Germany. The distribution of these persistent organic pollutants (POPs) in humic topsoils with respect to vegetation cover (coniferous vs. deciduous vs. mixed), total organic carbon (TOC), altitude and latitude data was investigated...
August 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28801324/mechanical-thrombectomy-for-repeated-cerebral-tumor-embolism-from-a-thoracic-sarcomatoid-carcinoma
#20
Raoul Pop, Dan Mihoc, Monica Manisor, Johann Sebastian Richter, Veronique Lindner, Ralf Janssen-Langenstein, Mihaela Simu, Valerie Wolff, Remy Beaujeux
Cerebral embolism originating from intracardiac tumors represents a rare cause of stroke and has been documented in both adult and pediatric populations. We present a patient recently diagnosed with a right pulmonary hilum tumor, invading the pulmonary veins and the left atrium. Two consecutive episodes of large cerebral vessel occlusion in separate vascular territories occurred in the same day and were treated by mechanical thrombectomy. Embolic material retrieved on both occasions contained tumor fragments with peripheral endothelialization...
August 11, 2017: BMJ Case Reports
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