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Preparation of a novel supported electrode comprising a nickel(Ⅱ)hydroxide-modified carbon paste electrode(Ni(OH)_2-X/CPE)for the electrocatalytic oxidation of formaldehyde

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Chinese Journal of Catalysis 2016年第1期37卷 159-168页

作者： safura kavian Seyed Naser Azizi Shahram Ghasemi 马赞德兰大学化学学院分析部马赞德兰大学化学学院

We prepared a novel nickel（II）hydroxide-modified carbon paste electrode（Ni（OH）2-X/CPE）for the electrocatalytic oxidation of *** electrode was prepared by a simple method without the use of linking *** prepared Ni（OH）2-X/CPE material was characterized by scanning electron microscopy and energy dispersive X-ray *** electrochemical performance of the proposed electrode was investigated using cyclic voltammetry,electrochemical impedance spectroscopy,and *** results indicate that Ni（OH）2-X/CPE exhibits good electrocatalytic activity with regards to formaldehyde oxidation owing to its nanoporous structure and the large surface area of zeolite *** values of the electron transfer coefficient and the catalytic rate constant were 0.7 and 6.1 × 104 cm3/（mol·s）,***,the proposed electrode,which showed remarkable electroactivity with regards to formaldehyde oxidation with long-term stability and good reproducibility,could be useful in fuel cells.

关键词： Fuel cell Electrocatalyst Porous NaX nanozeolite Formaldehyde Chronoamperometry

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Carbon Nanotube Ring Oscillator for Detecting Ionized Radiation

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材料科学与工程（中英文A版） 2016年第4期6卷 205-212页

作者： Yaser Mohammadi Banadaki safura Sharifi College of Science and Engineering Southern University Baton Rouge LA 70813 USA Division of Electrical and Computer Engineering Louisiana State University USA College of Science Louisiana State University Baton Rouge LA 70803 USA

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Factors associated with refractory pain in emergency patients admitted to emergency general surgery

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World Journal of Emergency Medicine 2021年第1期12卷 12-17页

作者： William Gilliam Jackson FBarr Brandon Bruns Brandon Cave Jordan Mitchell Tina Nguyen Jamie Palmer Mark Rose safura Tanveer Chris Yum Quincy K.Tran Johns Hopkins University Baltimore 21218USA Research Associate Program in Emergency Medicine and Critical Care Department of Emergency MedicineUniversity of Maryland School of MedicineBaltimore 21201USA R Adams Cowley Shock Trauma Center University of Maryland School of MedicineBaltimore 21201USA Department of Surgery University of Maryland School of MedicineBaltimore 21201USA Louisiana State University Louisiana 70803USA University of Maryland School of Medicine Baltimore 21201USA Department of Emergency Medicine University of Maryland School of MedicineBaltimore 21201USA

BACKGROUND: Oligoanalgesia in emergency departments (EDs) is multifactorial. A previousstudy reported that emergency providers did not adequately manage patients with severe paindespite objective findings for surgical pathologies. Our study aims to investigate clinical andlaboratory factors, in addition to providers’ interventions, that might have been associated witholigoanalgesia in a group of ED patients with moderate and severe pains due to surgical ***: We conducted a retrospective study of adult patients who were transferred directlyfrom referring EDs to the emergency general surgery (EGS) service at a quaternary academic centerbetween January 2014 and December 2016. Patients who were intubated, did not have adequaterecords, or had mild pain were excluded. The primary outcome was refractory pain, which wasdefi ned as pain reduction <2 units on the 0–10 pain scale between triage and ED ***: We analyzed 200 patients, and 58 (29%) had refractory pain. Patients with refractory painhad signifi cantly higher disease severity, serum lactate (3.4±2.0 mg/dL vs. 1.4±0.9 mg/dL, P=0.001), and lessfrequent pain medication administration (median [interquartile range], 3 [3–5] vs. 4 [3–7], P=0.001), whencompared to patients with no refractory pain. Multivariable logistic regression showed that the number of painmedication administration (odds ratio [OR] 0.80, 95% confi dence interval [95% CI] 0.68–0.98) and ED serumlactate levels (OR 3.80, 95% CI 2.10–6.80) were signifi cantly associated with the likelihood of refractory ***: In ED patients transferring to EGS service, elevated serum lactate levelswere associated with a higher likelihood of refractory pain.

关键词： Serum lactate Refractory pain Emergency general surgery Emergency department

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Assessing adequacy of emergency provider documentation among interhospital transferred patients with acute aortic dissection

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World Journal of Emergency Medicine 2019年第2期10卷 94-100页

作者： Mark Rose Carina Newton Benchaa Boualam Nancy Bogne Adam Ketchum Umang Shah Jordan Mitchell safura Tanveer Tucker Lurie Walesia Robinson Rebecca Duncan Stephen Thom Quincy Khoi Tran Department of Emergency Medicine University of Maryland School of Medicine University of Maryland at College Park University of Maryland School of Medicine Program of Trauma The R Adams Cowley Shock Trauma Center University of Maryland School of Medicine

BACKGROUND: Acute aortic dissection(AoD) is a hypertensive emergency often requiring the transfer of patients to higher care hospitals; thus, clinical care documentation and compliance with the Emergency Medical Treatment and Active Labor Act(EMTALA) is crucial. The study assessed emergency providers(EP) documentation of clinical care and EMTALA compliance among interhospital transferred AoD ***: This retrospective study examined adult patients transferred directly from a referring emergency department(ED) to a quaternary academic center between January 1, 2011 and September 30, 2015. The primary outcome was the percentage of records with adequate documentation of clinical care(ADoCC). The secondary outcome was the percentage of records with adequate documentation of EMTALA compliance(ADoEMTALA). RESULTS: There were 563 electronically identified patients with 287 included in the final analysis. One hundred and five(36.6%) patients had ADoCC while 166(57.8%) patients had ADoEMTALA. Patients with inadequate documentation of EMTALA(IDoEMTALA) were associated with a higher likelihood of not meeting the American Heart Association(AHA) ED Departure SBP guideline(OR 1.8, 95% CI 1.03–3.2, P=0.04). Male gender, handwritten type of documentation, and transport by air were associated with an increased risk of inadequate documentation of clinical care(IDoCC), while receiving continuous infusion was associated with higher risk of ***: Documentation of clinical care and EMTALA compliance by Emergency Providers is poor. Inadequate EMTALA documentation was associated with a higher likelihood of patients not meeting the AHA ED Departure SBP guideline. Therefore, Emergency Providers should thoroughly document clinical care and EMTALA compliance among this critically ill group before transfer.

关键词： Acute aortic dissection EMTALA Interhospital transfer Documentation Compliance

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Detection of Breast Cancer 1 (BRCA1) Gene Using an Electrochemical DNA Biosensor Based on Immobilized ZnO Nanowires

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Open Journal of Applied Biosensor 2014年第2期3卷 9-17页

作者： Nur Azimah Mansor Zainiharyati Mohd Zain Hairul Hisham Hamzah Mohd Shihabuddin Ahmad Noorden Siti safura Jaapar Valerio Beni Zafar Husain Ibupoto Faculty of Applied Sciences Universiti Teknologi MARAShah AlamMalaysia Faculty of Pharmacy Universiti Teknologi MARAPuncak AlamMalaysia Atta-ur-Rahman Institute for Natural Product Discovery Universiti Teknologi MARAPuncak AlamMalaysia Biosensors and Bioelectronics Centre Department of PhysicsChemistryand BiologyLinkoping UniversityLinkopingSweden Physical Electronics and Nanotechnology Division Department of Science and Technology(ITN)Campus NorrkopingLinkoping UniversityNorrkopingSweden

Herein we report an electrochemical DNA biosensor for the rapid detection of sequence (5’ AAT GGA TTT ATC TGC TCT TCG 3’) specific for the breast cancer 1 (BRCA1) gene. The proposed electrochemical genosensor is based on short oligonucleotide DNA probe immobilized onto zinc oxide nanowires (ZnONWs) chemically synthesized onto gold electrode via hydrothermal technique. The morphology studies of the ZnONWs, performed by field emission scanning electron microscopy (FESEM), showed that the ZnO nanowires are uniform, highly dense and oriented perpendicularly to the substrate. Recognition event between the DNA probe and the target was investigated by differential pulse voltammetry (DPV) in 0.1 M acetate buffer solution (ABS), pH 7.00;as a result of the hybridization, an oxidation signal was observed at +0.8 V. The influences of pH, target concentration, and non-complimentary DNA on biosensor performance were examined. The proposed DNA biosensor has the ability to detect the target sequence in the range of concentration between 10.0 and 100.0 μM with a detection limit of 3.32 μM. The experimental results demonstrated that the prepared ZnONWs/Au electrodes are suitable platform for the immobilization of DNA.

关键词： Zinc Oxide Nanowires DNA Biosensor Breast Cancer Gene BRCA1 DNA Hybridization Differential Pulse Voltammetry

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