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https://www.readbyqxmd.com/read/28346218/wafer-scale-production-of-highly-uniform-two-dimensional-mos2-by-metal-organic-chemical-vapor-deposition
#1
TaeWan Kim, Jihun Mun, Hyeji Park, DaeHwa Joung, Mangesh Diware, Won Chegal, Jonghoo Park, Soo-Hwan Jeong, Sang-Woo Kang
Semiconducting two-dimensional (2D) materials, particularly, extremely thin molybdenum disulfide (MoS2) films are attracting considerable attention from the academia and industry owing to their distinctive optical and electrical properties. Here, we present the direct growth of a MoS2 monolayer with unprecedented spatial and structural uniformity across an entire 8-inch SiO2/Si wafer. The influences of growth pressure, ambient gases (Ar, H2), and S/Mo molar flow ratio on the MoS2 layered growth were explored by considering the domain size, nucleation sites, morphology, and impurity incorporation...
March 27, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28346064/modeling-and-simulation-of-two-wheelchair-accessories-for-pushing-doors
#2
Soran Jalal Abdullah, Javeed Shaikh Mohammed
Independent mobility is vital to individuals of all ages, and wheelchairs have proven to be great personal mobility devices. The tasks of opening and navigating through a door are trivial for healthy people, while the same tasks could be difficult for some wheelchair users. A wide range of intelligent wheelchair controllers and systems, robotic arms, or manipulator attachments integrated with wheelchairs have been developed for various applications, including manipulating door knobs. Unfortunately, the intelligent wheelchairs and robotic attachments are not widely available as commercial products...
March 27, 2017: Assistive Technology: the Official Journal of RESNA
https://www.readbyqxmd.com/read/28345584/terahertz-and-mid-infrared-plasmons-in-three-dimensional-nanoporous-graphene
#3
Fausto D'Apuzzo, Alba R Piacenti, Flavio Giorgianni, Marta Autore, Mariangela Cestelli Guidi, Augusto Marcelli, Ulrich Schade, Yoshikazu Ito, Mingwei Chen, Stefano Lupi
Two-dimensional (2D) graphene emerged as an outstanding material for plasmonic and photonic applications due to its charge-density tunability, high electron mobility, optical transparency and mechanical flexibility. Recently, novel fabrication processes have realised a three-dimensional (3D) nanoporous configuration of high-quality monolayer graphene which provides a third dimension to this material. In this work, we investigate the optical behaviour of nanoporous graphene by means of terahertz and infrared spectroscopy...
March 27, 2017: Nature Communications
https://www.readbyqxmd.com/read/28345549/sub-anesthesia-dose-of-isoflurane-in-60-oxygen-reduces-inflammatory-responses-in-experimental-sepsis-models
#4
Yi Huang, Xiao-Xia Wang, Dong-Dong Sun, Ze-Xin Zhang, Wan-Wan Yang, Tian Shao, Han Han, Er-Fei Zhang, Zhong-Shu Pu, Zuo-Xu Hou, Hai-Long Dong, Li-Ze Xiong, Li-Chao Hou
BACKGROUND: Sepsis is a major cause of mortality in Intensive Care Units. Anesthetic dose isoflurane and 100% oxygen were proved to be beneficial in sepsis; however, their application in septic patients is limited because long-term hyperoxia may induce oxygen toxicity and anesthetic dose isoflurane has potential adverse consequences. This study was scheduled to find the optimal combination of isoflurane and oxygen in protecting experimental sepsis and its mechanisms. METHODS: The effects of combined therapy with isoflurane and oxygen on lung injury and sepsis were determined in animal models of sepsis induced by cecal ligation and puncture (CLP) or intraperitoneal injection of lipopolysaccharide (LPS) or zymosan...
April 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28345446/inter-species-comparative-antioxidant-assay-and-hptlc-analysis-of-sakuranetin-in-the-chloroform-and-ethanol-extracts-of-aerial-parts-of-rhus-retinorrhoea-and-rhus-tripartita
#5
Perwez Alam, Mohammad Khalid Parvez, Ahmed Hassan Arbab, Nasir Ali Siddiqui, Mohammed Salem Al-Dosary, Adnan Jathlan Al-Rehaily, Sarfaraz Ahmed, Mohd Abul Kalam, Mohammad Shamim Ahmad
CONTEXT: Extensive research on Rhus (Anacardiaceae) shows their antioxidant potential, which warrants further evaluation of its other species. OBJECTIVE: To perform a comparative antioxidant assay on extracts of R. retinorrhoea and R. tripartita, including sakuranetin quantification by a validated HPTLC method. MATERIALS AND METHODS: In vitro antioxidant assay was performed on chloroform and ethanol extracts of R. retinorrhoea Steud. ex Oliv...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28344606/edema-worsens-target-coverage-in-high-dose-rate-interstitial-brachytherapy-of-mobile-tongue-cancer-a-report-of-two-cases
#6
Ken Yoshida, Hideya Yamazaki, Tadayuki Kotsuma, Hironori Akiyama, Tadashi Takenaka, Koji Masui, Yasuo Yoshioka, Yasuo Uesugi, Taiju Shimbo, Nobuhiko Yoshikawa, Hiroto Yoshioka, Takumi Arika, Eiichi Tanaka, Yoshifumi Narumi
PURPOSE: We report our study on two patients to highlight the risk of underdosage of the clinical target volume (CTV) due to edema during high-dose-rate interstitial brachytherapy (HDR-ISBT) of mobile tongue cancer. MATERIAL AND METHODS: To treat the lateral side of the CTV, flexible applicator tubes were implanted on the mouth floor. Two-dimensional planning was performed using X-ray images for Case 1, and three-dimensional (3D) planning was performed using computed tomography (CT) for Case 2...
February 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/28343831/stepping-toward-objective-outcomes-a-prospective-analysis-of-step-count-after-total-joint-arthroplasty
#7
Meredith P Crizer, Gregory S Kazarian, Andrew N Fleischman, Jess H Lonner, Mitchell G Maltenfort, Antonia F Chen
BACKGROUND: Functional recovery monitoring after total hip arthroplasty (THA) and total knee arthroplasty (TKA) is often limited to surgeon-based assessment and patient self-reporting rather than objective measures. However, traditional outcomes may not reliably gauge return of function. The goal of this study was to evaluate and compare an objective measure of postoperative recovery, daily step-count, with patient self-reported outcomes. METHODS: Prospectively, 589 patients used a mobile step-tracking application to record daily steps...
March 1, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28343078/development-and-validation-of-liquid-chromatography-tandem-mass-spectrometry-method-quantitative-determination-of-polymyxin-b1-polymyxin-b2-polymyxin-b3-and-isoleucine-polymyxin-b1-in-human-plasma-and-its-application-in-clinical-studies
#8
Kim H Hee, Yee K J Leaw, Jun L Ong, Lawrence S Lee
Polymyxin B (PB) is an antibiotic consisting of a cyclic heptapeptide and a tripeptide side chain used in treatment of infections caused by Gram-negative bacteria. Commercial formulations of PB contain multiple structurally related components with major constituents of PB1, PB2, PB3 and ile-PB1. To understand the pharmacokinetics of these major components, we have developed and validated a LC-MS/MS method to quantify PB1, PB2, PB3 and ile-PB1 in human plasma. PB was extracted from plasma by protein precipitation using trichloroacetic acid followed by chromatographic separation on Zorbax Bonus-RP column (100mm×2...
March 14, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28342973/effects-of-a-sustained-release-formulation-of-1-25-dihydroxyvitamin-d3-glycosides-for-milk-fever-prevention-on-serum-1-25-dihydroxyvitamin-d3-calcium-and-phosphorus-in-dairy-cows
#9
Heinrich Bachmann, Michael Lanz, Susanne Kehrle, Wolfgang Bittner, Annick Toggenburger, Georg A Mathis, Walter Rambeck
Milk fever (MF) is a metabolic disease in dairy cows around parturition. The clinical lead sign is muscular paresis leading in severe cases to paralysis of the affected animal. Multiparturient animals of high performing dairy breeds are most likely to be affected and have a high probability of recurrence. An acute drop in blood calcium levels causes the disease when the demand for calcium at the onset of lactation exceeds the ability to replete blood calcium levels through mobilization from bone and intestinal uptake...
March 22, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28342548/in-situ-reactive-zone-with-modified-mg-oh-2-for-remediation-of-heavy-metal-polluted-groundwater-immobilization-and-interaction-of-cr-iii-pb-ii-and-cd-ii
#10
Jun Dong, Bowen Li, Qiburi Bao
Mg(OH)2 dissolves slowly and can provide a long-term source of alkalinity, thus a promising alternative reagent for the in situ remediation of heavy metal polluted groundwater. However, the application of Mg(OH)2 on in situ reactive zone (IRZ) for heavy metal polluted groundwater has never been investigated. In this study, the behaviors of heavy metals in a Mg(OH)2 IRZ were monitored for 45d. The heavy metals show a sequential precipitation by modified Mg(OH)2 due to the difference of Ksp. Column tests were conducted to investigate the temporal and spatial distribution of heavy metals in Mg(OH)2 IRZ and evaluate the stabilization effect for multi-heavy metal polluted groundwater...
February 24, 2017: Journal of Contaminant Hydrology
https://www.readbyqxmd.com/read/28342292/ultra-fast-liquid-chromatography-with-tandem-mass-spectrometry-determination-of-eight-bioactive-components-of-kai-xin-san-in-rat-plasma-and-its-application-to-a-comparative-pharmacokinetic-study-in-normal-and-alzheimer-s-disease-rats
#11
Xiaotong Wang, Yue Zhang, Huibin Niu, Yajing Geng, Bing Wang, Xiaomei Yang, Pengyu Yan, Qing Li, Kaishun Bi
A method of ultra-fast liquid chromatography with tandem mass spectrometry was developed and validated for the simultaneous quantitation of eight bioactive components, including polygalaxanthone III, sibiricaxanthone B, tenuifolin, sibiricose A5, sibiricose A6, tenuifoliside A, ginsenoside Re and ginsenoside Rb1 in rat plasma after oral administration of Kai-Xin-San. The plasma samples were extracted by liquid-liquid extraction using digoxin as internal standard. Chromatographic separation was performed on a Venusil MP C18 column (100 mm × 2...
March 25, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28342093/achieving-value-in-mobile-health-applications-for-cancer-survivors
#12
Sharon Watkins Davis, Ingrid Oakley-Girvan
PURPOSE: This study aimed to identify appropriate development and testing strategies for mobile health applications for cancer survivors. METHODS: In January of 2016, we conducted a PubMed search for mobile applications for cancer survivors. A total of 32 articles were selected for inclusion, including 13 review articles, and 19 articles describing an mHealth application or intervention. We assessed mobile app development and testing strategies and standards as described in these articles...
March 24, 2017: Journal of Cancer Survivorship: Research and Practice
https://www.readbyqxmd.com/read/28341988/unexpected-differences-between-planar-and-column-liquid-chromatographic-retention-of-1-acenaphthenol-enantiomers-controlled-by-supramolecular-interactions-involving-%C3%AE-cyclodextrin-at-subambient-temperatures
#13
Hatsuichi Ohta, Elżbieta Włodarczyk, Krzysztof Piaskowski, Aleksandra Kaleniecka, Lucyna Lewandowska, Michał J Baran, Mariusz Wojnicz, Kiyokatsu Jinno, Yoshihiro Saito, Paweł K Zarzycki
We report the results of experimental work focusing on host-guest supramolecular complex creation between macrocyclic compound (β-cyclodextrin) and 1-acenaphthenol enantiomers (racemic mixture) in liquid phase composed of 35% acetonitrile in water (v/v) at different temperatures ranging from 0 to 90 °C. Experimental setup involved several analytical protocols based on classical non-forced flow planar chromatography (RP-18 TLC plates), micro-TLC (RP-18 W HPTLC plates), column chromatography (HPLC with C-18 and C-30 stationary phases), as well as UV-Vis spectrophotometry and optical microscopy...
March 24, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28341961/from-smooth-to-rough-from-water-to-air-the-intertidal-habitat-of-northern-clingfish-gobiesox-maeandricus
#14
Petra Ditsche, Madeline Hicks, Lisa Truong, Christina Linkem, Adam Summers
The Northern clingfish is a small, Eastern North Pacific fish that can attach to rough, fouled rocks in the intertidal. Their ability to attach to surfaces has been measured previously in the laboratory, and in this study, we show the roughness and fouling of the natural habitat of these fish. We introduce a new method for measuring surface roughness of natural substrates with time-limited accessibility. We expect this method to be broadly applicable in studies of animal/substrate surface interactions in habitats difficult to characterize...
April 2017: Die Naturwissenschaften
https://www.readbyqxmd.com/read/28341842/a-scoring-system-to-predict-breast-cancer-mortality-at-5-and-10-years
#15
Esther Paredes-Aracil, Antonio Palazón-Bru, David Manuel Folgado-de la Rosa, José Ramón Ots-Gutiérrez, Antonio Fernando Compañ-Rosique, Vicente Francisco Gil-Guillén
Although predictive models exist for mortality in breast cancer (BC) (generally all cause-mortality), they are not applicable to all patients and their statistical methodology is not the most powerful to develop a predictive model. Consequently, we developed a predictive model specific for BC mortality at 5 and 10 years resolving the above issues. This cohort study included 287 patients diagnosed with BC in a Spanish region in 2003-2016. MAIN OUTCOME VARIABLE: time-to-BC death. Secondary variables: age, personal history of breast surgery, personal history of any cancer/BC, premenopause, postmenopause, grade, estrogen receptor, progesterone receptor, c-erbB2, TNM stage, multicentricity/multifocality, diagnosis and treatment...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28341309/polymorphic-distribution-of-proteins-in-solution-by-mass-spectrometry-the-analysis-of-insulin-analogues
#16
Maely P Fávero-Retto, Luiz Henrique Guerreiro, Cássio M Pessanha, Leonardo C Palmieri, Luís Maurício T R Lima
The characterization of conformational and oligomeric distribution of proteins is of paramount importance for the understanding of the correlation between structure and function. Among the bioanalytical approaches currently available, the electrospray ionization-mass spectrometry (ESI-MS) coupled to ion mobility spectrometry (IMS) is the best suited for high resolution identification with high sensitivity, allowing the in situ separation of oligomeric and conformational species. We tested the performance of the ESI-MS technique along with the IMS separation approach on a broad variety of insulin and insulin analogues with distinct oligomeric distribution pattern...
January 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28340781/use-of-multiresponse-statistical-techniques-to-optimize-the-separation-of-diosmin-hesperidin-diosmetin-and-hesperitin-in-different-pharmaceutical-preparations-by-high-performance-liquid-chromatography-with-uv-dad
#17
Mohamad Subhi Sammani, Sabrina Clavijo, Lindomar Portugal, Ruth Suárez, Hassan Seddik, Víctor Cerdà
A new method for the separation and determination of four flavonoids: hesperidin (HES), diosmin (DIO), hesperitin (HTIN), and diosmetin (DTIN) in pure form and pharmaceutical formulations has been developed by using high performance liquid chromatography (HPLC) with UV-DAD detection. Multivariate statistics (2(k) full factorial and Box Behnken Designs) has been used for the multiresponse optimization of the chromatographic separation, which was completed in 22min, and carried out on a symmetry® C18 column (250×3mm; 5µm) as stationary phase...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28340749/validation-of-a-new-method-based-on-salting-out-assisted-liquid-liquid-extraction-and-uhplc-ms-ms-for-the-determination-of-betalactam-antibiotics-in-infant-dairy-products
#18
David Moreno-González, Raquel Rodríguez-Ramírez, Monsalud Del Olmo-Iruela, Ana M García-Campaña
In this work a new multiresidue method has been developed for the determination of 15 betalactam antibiotics in infant milk and yogurt based on follow-on milk by ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). The separation was achieved in 6min, using a Kinetex Biphenyl Core-Shell column (50mmx2.1mm, 1.7µm), with a mobile phase of water with 0.05% acetic acid and methanol. The analytes were detected in ESI+ with multiple reaction monitoring mode and fragmentation conditions were optimized to obtain the highest sensitivity...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28340744/simultaneous-multi-residue-determination-of-twenty-one-veterinary-drugs-in-poultry-litter-by-modeling-three-way-liquid-chromatography-with-fluorescence-and-absorption-detection-data
#19
Carla M Teglia, Paola M Peltzer, Silvia N Seib, Rafael C Lajmanovich, María J Culzoni, Héctor C Goicoechea
A method for the simultaneous investigation of twenty one veterinary active ingredients in poultry litter based on MCR-ALS modeling of three-way liquid chromatography with fluorescence and UV detection data is presented. The chromatographic procedure was optimized in terms of both the nature of the organic solvent and the pH of the mobile phase to maximize the resolution of the analytes. In order to improve the simultaneous extraction efficiency of the twenty one veterinary drugs, a simplex-centroid design with combinations of the three components of the extracting mixture, i...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28340312/a-preliminary-investigation-on-the-effect-of-extracorporeal-shock-wave-therapy-as-a-treatment-for-neurogenic-heterotopic-ossification-following-traumatic-brain-injury-part-ii-effects-on-function
#20
J E Reznik, E Biros, Y Sacher, O Kibrik, S Milanese, S Gordon, M P Galea
INTRODUCTION: Neurogenic heterotopic ossification (NHO) occurs as a complication of traumatic brain injury (TBI). Management of clinically significant NHO remains variable. Complications of mature NHO include limitation of mobility. The effect of the extracorporeal shock wave therapy (ESWT) on range of motion at hip and knee, and function in patients with TBI with chronic NHO was investigated. METHODS: A series of single-case studies applying ESWT to chronic NHO at the hip or knee of 11 patients with TBI were undertaken at a rehabilitation hospital...
March 24, 2017: Brain Injury: [BI]
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