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https://www.readbyqxmd.com/read/29201628/aluminum-doped-cesium-lead-bromide-perovskite-nanocrystals-with-stable-blue-photoluminescence-used-for-display-backlight
#1
Ming Liu, Guohua Zhong, Yongming Yin, Jingsheng Miao, Ke Li, Chengqun Wang, Xiuru Xu, Clifton Shen, Hong Meng
Bright and stable blue emitters with narrow full-width at half-maxima are particularly desirable for applications in television displays and related technologies. Here, this study shows that doping aluminum (Al3+) ion into CsPbBr3 nanocrystals (NCs) using AlBr3 can afford lead-halide perovskites NCs with stable blue photoluminescence. First, theoretical and experimental analyses reveal that the extended band gap and quantum confinement effect of elongated shape give rise to the desirable blueshifted emission...
November 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/29182799/inhaled-magnesium-sulfate-in-the-treatment-of-acute-asthma
#2
REVIEW
Rachel Knightly, Stephen J Milan, Rodney Hughes, Jennifer A Knopp-Sihota, Brian H Rowe, Rebecca Normansell, Colin Powell
BACKGROUND: Asthma exacerbations can be frequent and range in severity from mild to life-threatening. The use of magnesium sulfate (MgSO₄) is one of numerous treatment options available during acute exacerbations. While the efficacy of intravenous MgSO₄ has been demonstrated, the role of inhaled MgSO₄ is less clear. OBJECTIVES: To determine the efficacy and safety of inhaled MgSO₄ administered in acute asthma. SPECIFIC AIMS: to quantify the effects of inhaled MgSO₄ I) in addition to combination treatment with inhaled β₂-agonist and ipratropium bromide; ii) in addition to inhaled β₂-agonist; and iii) in comparison to inhaled β₂-agonist...
November 28, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29176904/mobile-microscopy-as-a-screening-tool-for-oral-cancer-in-india-a-pilot-study
#3
Arunan Skandarajah, Sumsum P Sunny, Praveen Gurpur, Clay D Reber, Michael V D'Ambrosio, Nisheena Raghavan, Bonney Lee James, Ravindra D Ramanjinappa, Amritha Suresh, Uma Kandasarma, Praveen Birur, Vinay V Kumar, Honorius-Cezar Galmeanu, Alexandru Mihail Itu, Mihai Modiga-Arsu, Saskia Rausch, Maria Sramek, Manohar Kollegal, Gianluca Paladini, Moni Kuriakose, Lance Ladic, Felix Koch, Daniel Fletcher
Oral cancer is the most common type of cancer among men in India and other countries in South Asia. Late diagnosis contributes significantly to this mortality, highlighting the need for effective and specific point-of-care diagnostic tools. The same regions with high prevalence of oral cancer have seen extensive growth in mobile phone infrastructure, which enables widespread access to telemedicine services. In this work, we describe the evaluation of an automated tablet-based mobile microscope as an adjunct for telemedicine-based oral cancer screening in India...
2017: PloS One
https://www.readbyqxmd.com/read/29169905/fully-laparoscopic-left-hepatectomy-a-technical-reference-proposed-for-standard-practice-compared-to-the-open-approach-a-retrospective-propensity-score-model
#4
Roberto Valente, Robert Sutcliffe, Eric Levesque, Mara Costa, Nicola De' Angelis, Claude Tayar, Daniel Cherqui, Alexis Laurent
BACKGROUND: Laparoscopic left hemihepatectomy (LLH) may be an alternative to open (OLH). There are several original variations in the technical aspects of LLH, and no accepted standard. The aim of this study is to assess the safety and effectiveness of the technique developed at Henri Mondor Hospital since 1996. METHODS: The technique of LLH was conceived for safety and training of two mature generations of lead surgeons. The technique includes full laparoscopy, ventral approach to the common trunk, extrahepatic pedicle dissection, CUSA® parenchymal transection, division of the left hilar plate laterally to the Arantius ligament, and ventral transection of the left hepatic vein...
November 20, 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/29098002/serum-ferritin-a-backstage-weapon-in-diagnosis-of-dengue-fever
#5
Soumyabrata Roy Chaudhuri, Subhayan Bhattacharya, Mainak Chakraborty, Kingshuk Bhattacharjee
Aims: This retrospective study evaluates ferritin as a surrogate marker for dengue infection (NS1 and IgM negative stage) as opposed to other febrile illnesses of infective or inflammatory etiology (OFI). Methodology: Data of all patients admitted to medical ward and medical ITU during the dengue outbreak were collected. Patients admitted between 5 and 10 days of febrile illness without a diagnosis were included. Patients with NS1 positivity (Days 2-8) and/or positive IgM for dengue (Days 6-10) were considered to be dengue cases and those with other confirmed diagnoses were considered in the OFI group...
2017: Interdisciplinary Perspectives on Infectious Diseases
https://www.readbyqxmd.com/read/29097343/molecular-detection-of-multi-drug-resistant-mycobacterium-leprae-from-indian-leprosy-patients
#6
Mallika Lavania, Itu Singh, Ravindra P Turankar, Madhvi Ahuja, Vinay Pathak, Utpal Sengupta, Loretta Das, Archana Kumar, Joydeepa Darlong, Rajeev Nathan, Asha Maseey
OBJECTIVE: Emergence of multi drug resistant (MDR) organism for any infectious disease is a public health concern. Global efforts to control leprosy by intensive chemotherapy have led to a significant decrease in the number of registered patients. Currently recommended control measures for treating leprosy with MDT was designed to prevent the spread of dapsone resistant strains of Mycobacterium leprae. We report here the identification of MDR strains of M. leprae from relapsed leprosy patients from endemic regions in India...
October 30, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29092237/on-chip-free-beam-optics-on-a-polymer-based-photonic-integration-platform
#7
M Happach, D de Felipe, H Conradi, V N Friedhoff, E Schwartz, M Kleinert, W Brinker, C Zawadzki, N Keil, W Hofmann, M Schell
This paper presents on-chip free beam optics on polymer-based photonic components. Due to the circumstance that waveguide-based optics allows no direct beam access we use Gradient index (GRIN) lenses assembled into the chip to collimate the beam from the waveguides. This enables low loss power transmission over a length of 1432 µm. Even though the beam propagates through air it is possible to create a resonator with a wavelength shift of 0.002 nm/°C, hence the allowed deviations from the ITU-T grid (100 GHz) are met for ± 20 °C...
October 30, 2017: Optics Express
https://www.readbyqxmd.com/read/29073638/intratumoural-pd-l1-expression-is-associated-with-worse-survival-of-patients-with-epstein-barr-virus-associated-gastric-cancer
#8
An Na Seo, Byung Woog Kang, Oh Kyoung Kwon, Ki Bum Park, Seung Soo Lee, Ho Young Chung, Wansik Yu, Han Ik Bae, Seong Woo Jeon, Hyojeung Kang, Jong Gwang Kim
BACKGROUND: This study investigated the clinical relevance and prognostic impact of the overall expression of programmed cell death protein ligand-1 (PD-L1) and programmed cell death protein ligand-2 (PD-L2), in patients with Epstein-Barr virus-associated gastric cancer (EBVaGC). METHODS: After reviewing 1318 consecutive cases of surgically resected or endoscopic submucosal dissected gastric cancers, the expression status of PD-L1 and PD-L2 in 120 patients with EBVaGC identified by EBV-encoded RNA in situ hybridisation was retrospectively analysed using immunohistochemistry (IHC)...
December 5, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29060372/wearable-internet-of-things-from-human-activity-tracking-to-clinical-integration
#9
Poonam Kumari, Miguel Lopez-Benitez, Gyu Myoung Lee, Tae-Seong Kim, Atul S Minhas
Wearable devices for human activity tracking have been emerging rapidly. Most of them are capable of sending health statistics to smartphones, smartwatches or smart bands. However, they only provide the data for individual analysis and their data is not integrated into clinical practice. Leveraging on the Internet of Things (IoT), edge and cloud computing technologies, we propose an architecture which is capable of providing cloud based clinical services using human activity data. Such services could supplement the shortage of staff in primary healthcare centers thereby reducing the burden on healthcare service providers...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29042090/the-natural-history-of-flail-chest-injuries
#10
Kamil Naidoo, Layth Hanbali, Peter Bates
PURPOSE: Flail chest (FC) injuries represent a significant burden on trauma services because of its high morbidity and mortality. Current gold standard conservative management strategies for FC, are now being challenged by renewed interest in surgical rib fixation. This retrospective epidemiological study sets out to evaluate FC patients, and quantify the natural history of this injury by studying the injury patterns, epidemiology and mortality of patients sustaining FC injuries admitted to a major trauma centre (MTC)...
October 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/29022481/intra-and-interobserver-variability-of-intrapartum-transperineal-ultrasound-measurements-with-contraction-and-pushing
#11
José A Sainz, Ana Fernández-Palacín, Carlota Borrero, Adriana Aquise, Zenaida Ramos, José A García-Mejido
The aim of this study was to evaluate the inter- and intraobserver correlation of the different intrapartum-transperineal-ultrasound-parameters(ITU) (angle of progression (AoP), progression-distance (PD), head-direction (HD), midline-angle (MLA) and head-perineum distance (HPD)) with contraction and pushing. We evaluated 28 nulliparous women at full dilatation under epidural analgesia. We performed a transperineal ultrasound evaluating AoP and PD in the longitudinal plane, and MLA and HPD in the transverse plane...
October 12, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29021897/patient-outcome-of-emergency-laparotomy-improved-with-increasing-number-of-surgeons-on-call-in-a-university-hospital-audit-loop
#12
Anwar Hussain, Fahad Mahmood, Chui Teng, Sadaf Jafferbhoy, David Luke, Achilleas Tsiamis
AIM: Emergency laparotomy is a commonly performed high-mortality surgical procedure. The National Emergency Laparotomy Network (NELA) published an average mortality rate of 11.1% and a median length of stay equivalent to 16.3 days in patients undergoing emergency laparotomy. This study presents a completed audit loop after implementing the change of increasing the number of on-call surgeons in the general surgery rota of a university hospital. The aim of this study was to evaluate the outcomes of emergency laparotomy in a single UK tertiary centre after addition of one more consultant in the daily on-call rota...
November 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28951288/on-or-off-pump-coronary-artery-bypass-grafting-for-octogenarians-a%C3%A2-meta-analysis-of-comparative-studies-involving-27-623-patients
#13
REVIEW
Habib Khan, Mohsin Uzzaman, Umberto Benedetto, Salman Butt, Shahzad G Raja
OBJECTIVE: Coronary artery bypass grafting (CABG) is being increasingly offered to octogenarians. Both on- and off-pump CABG are reported as effective surgical revascularization strategies for octogenarians by single institution studies. However, the issue of superiority of one strategy over the other for octogenarians remains unresolved due to limited sample size of these studies. A meta-analysis of studies comparing outcomes of on- and off-pump CABG in octogenarians was undertaken to address the issue...
November 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28647723/a-retrospective-cohort-study-of-high-impact-users-among-patients-with-cerebrovascular-conditions
#14
Ahsan Rao, Alice Jones, Alex Bottle, Ara Darzi, Paul Aylin
OBJECTIVE: To apply group-based trajectory modelling (GBTM) to the hospital administrative data to evaluate, model and visualise trends and changes in the frequency of long-term hospital care use of the subgroups of patients with cerebrovascular conditions. DESIGN: A retrospective cohort study of patients with cerebrovascular conditions. SETTINGS: Secondary care of all patients with cerebrovascular conditions admitted to English National Hospital Service hospitals...
June 24, 2017: BMJ Open
https://www.readbyqxmd.com/read/28629433/smoking-and-timing-of-cessation-on-postoperative-pulmonary-complications-after-curative-intent-lung-cancer-surgery
#15
Sebastian T Lugg, Theofano Tikka, Paula J Agostini, Amy Kerr, Kerry Adams, Maninder S Kalkat, Richard S Steyn, Pala B Rajesh, Ehab Bishay, David R Thickett, Babu Naidu
BACKGROUND: Smoking is a risk factor for postoperative pulmonary complications (PPC) following non-small cell lung cancer (NSCLC) surgery. The optimal timing for preoperative smoking cessation has not been identified. Our study aimed to observe the impact of preoperative smoking cessation on PPC incidence and other postoperative outcomes including long-term survival. METHODS: A prospective study included consecutive patients following resection for NSCLC in a regional thoracic centre over a 4-year period (2010-2014)...
June 19, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28628968/performance-trends-in-age-group-triathletes-in-the-olympic-distance-triathlon-at-the-world-championships-2009-2014
#16
Martin Wonerow, Christoph Alexander Rüst, Pantelis Theodoros Nikolaidis, Thomas Rosemann, Beat Knechtle
Performance trends in elite triathletes competing in age group classes have been investigated for Ironman triathlon in ‘Ironman Hawaii’ but not for short distance triathletes competing at international level in events such as the Olympic distance triathlon at the World Championships. The aim of the present study was to evaluate participation and performance trends of age group triathletes competing in the Olympic distance triathlon at the International Triathlon Union (ITU) World Championships 2009-2014...
June 30, 2017: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/28562077/medical-student-perceptions-of-clinical-neurosurgery-teaching-in-an-undergraduate-medical-school-curriculum
#17
James Knight, Lauren Stroud, Thomas Geyton, Anthony Stead, Hannah R Cock
AIM: The aim of this study was to evaluate undergraduate medical student perceptions as to the value of different types of neurosurgical teaching to their general neuroscience education, delivered in the penultimate year of a U.K medical school. METHODS: We surveyed penultimate-year medical students at St George's Hospital Medical School, University of London (SGUL), who were undertaking their clinical neuroscience attachment from August 2014 to July 2015. A questionnaire comprising closed Likert scale questions and an open question inviting participants to comment freely was used to assess student perception about the value of Neurosurgical sessions within their overall neuroscience education...
May 31, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28501815/can-the-prehospital-national-early-warning-score-identify-patients-most-at-risk-from-subsequent-deterioration
#18
Joanna Shaw, Rachael T Fothergill, Sophie Clark, Fionna Moore
INTRODUCTION: The National Early Warning Score (NEWS) aids the early recognition of those at risk of becoming critically ill. NEWS has been recommended for use by ambulance services, but very little work has been undertaken to date to determine its suitability. This paper examines whether a prehospital NEWS derived from ambulance service clinical observations is associated with the hospital ED disposition. METHODS: Prehospital NEWS was retrospectively calculated from the ambulance service clinical records of 287 patients who were treated by the ambulance service and transported to hospital...
August 2017: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/28490285/a-comparative-study-of-short-term-outcomes-of-colorectal-cancer-surgery-in-the-elderly-population
#19
Clarence Yen, Constantinos Simillis, Mariam Choudhry, Sarah Mills, Oliver Warren, Paris P Tekkis, Christos Kontovounisios
BACKGROUND: Colorectal Cancer (CRC) is a disease of the elderly, and with an ageing population, oncological surgical procedures for CRC in the elderly is expected to increase. However, the balance between surgical benefits and risks associated with age and comorbidities in elderly patients is obscure. MATERIALS AND METHODS: A retrospective database of consecutive patients who received CRC surgery was used to compare short-term surgical and oncological outcomes between patients aged ≥75 and <75 years old undergoing CRC resection...
May 11, 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28460211/controversies-about-cervical-cancer-screening-a-qualitative-study-of-roma-women-s-non-participation-in-cervical-cancer-screening-in-romania
#20
Trude Andreassen, Elisabete Weiderpass, Florian Nicula, Ofelia Suteu, Andreea Itu, Minodora Bumbu, Aida Tincu, Giske Ursin, Kåre Moen
Romania has Europe's highest incidence and mortality of cervical cancer. While a free national cervical cancer-screening programme has been in operation since 2012, participation in the programme is low, particularly in minority populations. The aim of this study was to explore Roma women's (non)participation in the programme from women's own perspectives and those of healthcare providers and policy makers. We carried out fieldwork for a period of 125 days in 2015/16 involving 144 study participants in Cluj and Bucharest counties...
June 2017: Social Science & Medicine
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