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https://www.readbyqxmd.com/read/28441498/thin-wall-gan-inaln-multiple-quantum-well-tubes
#1
Christophe Durand, Jean-François Carlin, Catherine Bougerol, Bruno Gayral, Damien Salomon, Jean-Paul Barnes, Joel Eymery, Raphael Butte, Nicolas Grandjean
Thin-wall tubes composed of nitride semiconductors (III-N compounds) based on GaN/InAlN multiple quantum wells (MQWs) are fabricated by metal-organic vapor-phase epitaxy in a simple and full III-N approach. The synthesis of such MQW-tubes is based on the growth of N-polar c-axis vertical GaN wires surrounded by a core-shell MQW heterostructure followed by in situ selective etching using controlled H2/NH3 annealing at 1010°C to remove the inner GaN wire part. After this process, well-defined MQW-based tubes having non-polar m-plane orientation exhibit UV light near 330 nm up to room temperature, consistent with the emission of GaN/InAlN MQWs...
April 25, 2017: Nano Letters
https://www.readbyqxmd.com/read/28440933/what-s-in-a-butt-environmental-contamination-from-airborne-cigarette-butt-emissions
#2
Mengyan Gong, Shahana Khurshid, Dustin Poppendieck
No abstract text is available yet for this article.
May 2017: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/28439386/usefulness-of-clinical-prediction-rules-d-dimer-and-arterial-blood-gas-analysis-to-predict-pulmonary-embolism-in-cancer-patients
#3
Asifa Karamat, Shazia Awan, Muhammad Ghazanfar Hussain, Fahad Al Hameed, Faheem Butt, Ali Saeed Wahla
OBJECTIVES: Pulmonary embolism (PE) is seven times more common in cancer patients than non-cancer patients. Since the existing clinical prediction rules (CPRs) were validated predominantly in a non-cancer population, we decided to look at the utility of arterial blood gas (ABG) analysis and D-dimer in predicting PE in cancer patients. METHODS: Electronic medical records were reviewed between December 2005 and November 2010. A total of 177 computed tomography pulmonary angiograms (CTPAs) were performed...
March 2017: Oman Medical Journal
https://www.readbyqxmd.com/read/28438991/differentiation-of-v2a-interneurons-from-human-pluripotent-stem-cells
#4
Jessica C Butts, Dylan A McCreedy, Jorge Alexis Martinez-Vargas, Frederico N Mendoza-Camacho, Tracy A Hookway, Casey A Gifford, Praveen Taneja, Linda Noble-Haeusslein, Todd C McDevitt
The spinal cord consists of multiple neuronal cell types that are critical to motor control and arise from distinct progenitor domains in the developing neural tube. Excitatory V2a interneurons in particular are an integral component of central pattern generators that control respiration and locomotion; however, the lack of a robust source of human V2a interneurons limits the ability to molecularly profile these cells and examine their therapeutic potential to treat spinal cord injury (SCI). Here, we report the directed differentiation of CHX10(+) V2a interneurons from human pluripotent stem cells (hPSCs)...
April 24, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28438282/in-vitro-susceptibility-of-methicillin-resistant-stayphylococcus-aureus-to-honey
#5
Muhammad Barkaat Hussain, Abdul Hannan, Muhammad Absar, NadeemShafique Butt
Wound infections caused by methicillin-resistant Staphylococcus aureus (MRSA) is becoming much complicated and costly to treat as antimicrobial resistance is quite common. Twenty five MRSA strains isolated from infected wounds and three ATCC reference strains were evaluated for their susceptibility to locally produced black seed (Nigella sativa), beri (ZiziphusJujuba) and shain honey (Plectranthus rugosus wall) by agar incorporation assay. Medically graded manuka honey (UMF 21(+)) was included as control. Locally produced black seed honey inhibited all clinical isolates at mean MIC of 5...
May 2017: Complementary Therapies in Clinical Practice
https://www.readbyqxmd.com/read/28435557/internal-fixation-of-transverse-patella-fractures-using-cannulated-cancellous-screws-with-anterior-tension-band-wiring
#6
I Khan, M Y Dar, S Rashid, M F Butt
Aims: To evaluate the effectiveness and safety of anterior tension band wiring technique using two cannulated cancellous screws in patients with transverse (AO34-C1) or transverse with mildly comminuted (AO34-C2) patellar fractures. Materials and Methods: This is a prospective study of 25 patients with transverse fracture or transverse fracture with mildly comminuted patella fractures. All the patients were treated with open reduction and internal fixation using two parallel cannulated screws and 18G stainless steel wire as per the tension band principle...
July 2016: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/28433203/the-limitations-of-transforming-very-high-body-mass-indexes-into-z-scores-among-8-7-million-2-to-4-year-old-children
#7
David S Freedman, Nancy F Butte, Elsie M Taveras, Alyson B Goodman, Cynthia L Ogden, Heidi M Blanck
OBJECTIVE: To examine the associations among several body mass index (BMI) metrics (z-scores, percent of the 95th percentile (%BMIp95) and BMI minus 95th percentile (ΔBMIp95) as calculated in the growth charts from the Centers for Disease Control and Prevention (CDC). It is known that the widely used BMI z-scores (BMIz) and percentiles calculated from the growth charts can differ substantially from those that directly observed in the data for BMIs above the 97th percentile (z = 1...
April 19, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28429528/use-of-adenosine-to-shorten-the-post-ablation-waiting-period-for-cavotricuspid-isthmus-dependent-atrial-flutter
#8
Gustavo Morales, Yousef H Darrat, Nicolas Lellouche, Sun Moon Kim, Muhammad Butt, Katrina Bidwell, William Lippert, Gbolahan Ogunbayo, David Hamon, Luigi Di Biase, Andrea Natale, Kevin Parrott, Claude S Elayi
BACKGROUND: Dormant conduction unmasked by adenosine predicts clinical recurrences of cavotricuspid isthmus (CTI) dependent atrial flutter following catheter ablation. Conventional practice involves a waiting period of 20 to 30 minutes after achievement of a bidirectional line of block (BDB) to monitor for recovery of conduction. OBJECTIVE: Assess whether abolition of dormant conduction with adenosine immediately after CTI ablation and BDB can predict the lack of CTI conduction recovery during the following 30 minutes...
April 21, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28427160/biomarker-analysis-of-the-phase-3-torch-trial-for-first-line-erlotinib-versus-chemotherapy-in-advanced-non-small-cell-lung-cancer-patients
#9
Lucia Kim, Mauro Saieg, Massimo Di Maio, Ciro Gallo, Charles Butts, Fortunato Ciardiello, Ronald Feld, Dengxiao Cheng, Vittorio Gebbia, Marco Angelo Burgio, Yasmin Alam, Simona Signoriello, Antonio Rossi, Natasha Leighl, Paolo Maione, Alessandro Morabito, Geoffrey Liu, Ming-Sound Tsao, Francesco Perrone, Cesare Gridelli
BACKGROUND: The TORCH phase III trial compared the efficacy of first-line erlotinib followed by chemotherapy at progression (experimental arm) with the reverse sequence (standard arm) in unselected advanced non-small cell lung cancer (NSCLC) patients. Here we report biomarker analyses. METHODS: EGFR and KRAS mutation, expression of EGFR family members and of cMET and PTEN and EGFR and ABCG2 germline polymorphisms were tested on tumor tissue or blood samples to either confirm previously proposed predictive role or describe it in an explorative setting...
February 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28425873/rapid-detection-of-mycobacterium-tuberculosis-and-rifampicin-resistance-in-extrapulmonary-tuberculosis-and-sputum-smear-negative-pulmonary-suspects-using-xpert-mtb-rif
#10
Irfan Ullah, Arshad Javaid, Haleema Masud, Mazhar Ali, Anila Basit, Waqas Ahmad, Faisal Younis, Rehana Yasmin, Afsar Khan, Abdul Jabbar, Masroor Husain, Zahid Ahmad Butt
BACKGROUND: Tuberculosis (TB) is a serious public health problem in developing countries such as Pakistan. Rapid diagnosis of TB and detection of drug resistance are very important for timely and appropriate management of multidrug-resistant TB (MDR-TB). OBJECTIVE: The purpose of this study was to determine the diagnostic efficacy of the Xpert MTB/RIF assay for rapid diagnosis of TB and detection of rifampicin (RIF) resistance in extrapulmonary and smear-negative pulmonary TB suspects...
April 21, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28423866/relaxation-behavior-of-polyethylene-welded-joints
#11
Valeriy Demchenko, Maksym Iurzhenko, Andriy Shadrin, Anatoliy Galchun
The paper presents results of the investigation of structure relaxation and thermal properties of PE-80 and PE-100 polyethylene hot-tool butt welds. It was found that a weld with the re-crystallized crystalline structure is formed during the welding of dissimilar types of polyethylene. It is shown that within a long period (1 year) the relaxation occurs not only in amorphous but also in the crystalline phase (crystalline α-form transforms into mixed αβ-form), with respective changes in polyethylene properties...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28420926/femto-lasik-the-recent-innovation-in-laser-assisted-refractive-surgery
#12
Zubair Shahid Bashir, Muhammad Hassaan Ali, Ayesha Anwar, Muhammad Hammad Ayub, Nadeem Hafeez Butt
Femtosecond laser has been introduced in refractive surgery to create a thin-hinged corneal flap without using any blade. The current review was planned to analyse and compare femtosecond-assisted laser in-situ keratomileusis (LASIK), the latest refractive procedure, with conventional techniques in refractive surgery. The analysis showed that femtosecond-assisted LASIK yielded more predictable corneal flaps, lesser ocular aberrations, better uncorrected visual acuity, lesser variations in intraocular pressure (IOP) and fewer chances of developing dry eyes...
April 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28420791/adult-enteric-nervous-system-in-health-is-maintained-by-a-dynamic-balance-between-neuronal-apoptosis-and-neurogenesis
#13
Subhash Kulkarni, Maria-Adelaide Micci, Jenna Leser, Changsik Shin, Shiue-Cheng Tang, Ya-Yuan Fu, Liansheng Liu, Qian Li, Monalee Saha, Cuiping Li, Grigori Enikolopov, Laren Becker, Nikolai Rakhilin, Michael Anderson, Xiling Shen, Xinzhong Dong, Manish J Butte, Hongjun Song, E Michelle Southard-Smith, Raj P Kapur, Milena Bogunovic, Pankaj J Pasricha
According to current dogma, there is little or no ongoing neurogenesis in the fully developed adult enteric nervous system. This lack of neurogenesis leaves unanswered the question of how enteric neuronal populations are maintained in adult guts, given previous reports of ongoing neuronal death. Here, we confirm that despite ongoing neuronal cell loss because of apoptosis in the myenteric ganglia of the adult small intestine, total myenteric neuronal numbers remain constant. This observed neuronal homeostasis is maintained by new neurons formed in vivo from dividing precursor cells that are located within myenteric ganglia and express both Nestin and p75NTR, but not the pan-glial marker Sox10...
April 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28412396/systems-approach-to-uncover-signaling-networks-in-primary-immunodeficiency-diseases
#14
Jeff Choi, Rosemary Fernandez, Holden T Maecker, Manish J Butte
This broad, unbiased approach of studying signaling across all circulating immune cells in healthy subjects allowed identification of disrupted signaling networks in patients with primary immunodeficiencies.
April 12, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28408012/comparing-generic-and-condition-specific-preference-based-measures-in-epilepsy-eq-5d-3l-and-newqol-6d
#15
COMPARATIVE STUDY
Brendan Mulhern, Joshua Pink, Donna Rowen, Simon Borghs, Thomas Butt, Dyfrig Hughes, Antony Marson, John Brazier
BACKGROUND: There is debate about the psychometric characteristics of the three-level EuroQol five-dimensional questionnaire (EQ-5D-3L) for use in epilepsy. In response to the concerns, an epilepsy-specific preference-based measure (NEWQOL-6D) was developed. The psychometric characteristics of the NEWQOL-6D, however, have not been assessed. OBJECTIVES: To investigate the validity and responsiveness of the EQ-5D-3L and the Quality of Life in Newly Diagnosed Epilepsy Instrument-six dimensions (NEWQOL-6D) for use in the assessment of treatments for newly diagnosed focal epilepsy...
April 2017: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/28405287/the-impact-of-climate-change-on-the-distribution-of-two-threatened-dipterocarp-trees
#16
Jiban C Deb, Stuart Phinn, Nathalie Butt, Clive A McAlpine
Two ecologically and economically important, and threatened Dipterocarp trees Sal (Shorea robusta) and Garjan (Dipterocarpus turbinatus) form mono-specific canopies in dry deciduous, moist deciduous, evergreen, and semievergreen forests across South Asia and continental parts of Southeast Asia. They provide valuable timber and play an important role in the economy of many Asian countries. However, both Dipterocarp trees are threatened by continuing forest clearing, habitat alteration, and global climate change...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28403437/postretinal-structure-and-function-in-severe-congenital-photoreceptor-blindness-caused-by-mutations-in-the-gucy2d-gene
#17
Geoffrey K Aguirre, Omar H Butt, Ritobrato Datta, Alejandro J Roman, Alexander Sumaroka, Sharon B Schwartz, Artur V Cideciyan, Samuel G Jacobson
Purpose: To examine how severe congenital blindness resulting from mutations of the GUCY2D gene alters brain structure and function, and to relate these findings to the notable preservation of retinal architecture in this form of Leber congenital amaurosis (LCA). Methods: Six GUCY2D-LCA patients (ages 20-46) were studied with optical coherence tomography of the retina and multimodal magnetic resonance imaging (MRI) of the brain. Measurements from this group were compared to those obtained from populations of normally sighted controls and people with congenital blindness of a variety of causes...
February 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28400942/treatment-of-distal-left-anterior-descending-artery-perforation-with-fat-embolization
#18
Galal Ahmed Abushahba, Salem Abujalala, Mehmood S Butt
Coronary perforation is a potentially fatal complication during percutaneous coronary intervention. Reports have shown that it occurs in 0.2 to 0.6% of all patients undergoing the procedures. Although the frequency of coronary perforation is low, it is a serious and potentially life-threatening situation that warrants prompt recognition and management. Here we present a case of distal coronary perforation, and review the management of coronary perforation in the current practice.
October 2016: Heart Views: the Official Journal of the Gulf Heart Association
https://www.readbyqxmd.com/read/28400540/cd56-bright-nk-il-7r%C3%AE-expression-negatively-associates-with-hcv-level-and-il-7-induced-nk-function-is-impaired-during-hcv-and-hiv-infections
#19
Chelsey J Judge, Lenche Kostadinova, Kenneth E Sherman, Adeel A Butt, Yngve Falck-Ytter, Nicholas T Funderburg, Alan L Landay, Michael M Lederman, Scott F Sieg, Johan K Sandberg, Donald D Anthony
Several lines of evidence support the concept that NK cells play an important role in control of hepatitis C virus (HCV) infection via cytokine secretion and cytotoxicity. IL-7 is a homeostatic cytokine with a role in T cell development, activation, proliferation, and cytokine secretion. The IL-7Rα chain [cluster of differentiation (CD)127] is expressed on NK cells, with greatest abundance on the CD56(bright)CD16(dim/-) (CD56(bright)) subset. Here, we measured CD127 expression on CD56(bright), CD56(dim)CD16(+) (CD56(dim)), or CD56(neg)CD16(+) (CD56(neg)) NK cell subsets of 25 uninfected donors (UD); 34 chronic HCV-infected, treatment-naïve; 25 HIV-infected, virally suppressed on antiretroviral therapy (ART); and 42 HCV-HIV-coinfected subjects on ART...
April 11, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28399421/a-role-for-gabaergic-interneuron-diversity-in-circuit-development-and-plasticity-of-the-neonatal-cerebral-cortex
#20
REVIEW
Simon Jb Butt, Jacqueline A Stacey, Yayoi Teramoto, Cristiana Vagnoni
GABAergic interneurons are a highly heterogeneous group of cells that are critical for the mature function and development of the neocortex. In terms of the latter, much attention has focused on the well-established role of parvalbumin (PV+)-expressing, fast spiking, basket cells in determining the critical period plasticity. However recent endeavours have started to shed the light on the contribution of other interneuron subtypes to early circuit formation and plasticity. Data suggests that there are significant interactions between PV+ cells and other interneuron subtypes that regulate circuit development in rodents in the first postnatal week...
April 8, 2017: Current Opinion in Neurobiology
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