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https://www.readbyqxmd.com/read/28538006/evaluation-and-management-of-patch-test-negative-patients-with-generalized-dermatitis
#1
Alison Spiker, Christen M Mowad
BACKGROUND: Patients with generalized dermatitis are common in dermatology practices. Allergic contact dermatitis is often suspected, and patients frequently undergo patch testing. When patch testing result is negative, further evaluation and management of these patients are challenging. OBJECTIVE: The purpose of this study was to survey members of the American Contact Dermatitis Society regarding the evaluation and management of patch test-negative patients with generalized dermatitis...
May 23, 2017: Dermatitis
https://www.readbyqxmd.com/read/28537820/photodynamic-diagnosis-and-narrow-band-imaging-in-the-management-of-bladder-cancer-a-review
#2
Piotr Kutwin, Tomasz Konecki, Marcin Cichocki, Piotr Falkowski, Zbigniew Jabłonowski
BACKGROUND: Bladder cancer is the most common malignancy of the urinary tract. Its proper diagnosis and efficient treatment is still considered a challenge in Urology today. White Light Cystoscopy is a gold standard for the diagnosis, follow-up, and endoscopic treatment of bladder cancer. To improve the efficacy of bladder cancer management, photodynamic diagnosis and narrow-band imaging have been introduced to the urological armamentarium. OBJECTIVE AND METHODS: The article presents the current state of knowledge of technical solutions that are intended to improve the diagnosis and management of bladder cancer...
May 22, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28535104/measuring-the-value-of-new-drugs-validity-and-reliability-of-4-value-assessment-frameworks-in-the-oncology-setting
#3
Tanya G K Bentley, Joshua T Cohen, Elena B Elkin, Julie Huynh, Arnab Mukherjea, Thanh H Neville, Matthew Mei, Ronda Copher, Russell Knoth, Ioana Popescu, Jackie Lee, Jenelle M Zambrano, Michael S Broder
BACKGROUND: Several organizations have developed frameworks to systematically assess the value of new drugs. OBJECTIVE: To evaluate the convergent validity and interrater reliability of 4 value frameworks to understand the extent to which these tools can facilitate value-based treatment decisions in oncology. METHODS: Eight panelists used the American Society of Clinical Oncology (ASCO), European Society for Medical Oncology (ESMO), Institute for Clinical and Economic Review (ICER), and National Comprehensive Cancer Network (NCCN) frameworks to conduct value assessments of 15 drugs for advanced lung and breast cancers and castration-refractory prostate cancer...
June 2017: Journal of Managed Care & Specialty Pharmacy
https://www.readbyqxmd.com/read/28534913/theoretical-investigation-of-energy-gap-bowing-in-cdsxse1-x-alloy-quantum-dots
#4
Laxman Tatikondewar, Anjali Kshirsagar
To investigate energy gap bowing in homogeneously alloyed CdSxSe1-x quantum dots (QDs) and to understand whether it is different from bulk, we perform density functional theory based electronic structure calculations for spherical QDs of different compositions x (0 ≤ x ≤ 1) and of varying sizes (2.2 to 4.6 nm). We find the bowing constant to be slightly higher than in bulk for different sizes of quantum dots. The change in the highest occupied molecular orbital (HOMO)-lowest unoccupied molecular orbital (LUMO) gap of QDs mainly arises due to the change in the LUMO energies...
May 23, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28534773/sparsity-based-color-image-super-resolution-via-exploiting-cross-channel-constraints
#5
Hojjat Mousavi, Vishal Monga
Sparsity constrained single image super-resolution (SR) has been of much recent interest. A typical approach involves sparsely representing patches in a low-resolution (LR) input image via a dictionary of example LR patches, and then using the coefficients of this representation to generate the highresolution (HR) output via an analogous HR dictionary. However, most existing sparse representation methods for super resolution focus on the luminance channel information and do not capture interactions between color channels...
May 16, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28534729/self-selection-of-frequency-tables-with-bilateral-mismatches-in-an-acoustic-simulation-of-a-cochlear-implant
#6
Matthew B Fitzgerald, Ksenia Prosolovich, Chin-Tuan Tan, E Katelyn Glassman, Mario A Svirsky
BACKGROUND: Many recipients of bilateral cochlear implants (CIs) may have differences in electrode insertion depth. Previous reports indicate that when a bilateral mismatch is imposed, performance on tests of speech understanding or sound localization becomes worse. If recipients of bilateral CIs cannot adjust to a difference in insertion depth, adjustments to the frequency table may be necessary to maximize bilateral performance. PURPOSE: The purpose of this study was to examine the feasibility of using real-time manipulations of the frequency table to offset any decrements in performance resulting from a bilateral mismatch...
May 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28533926/concomitant-lymphoplasmacytic-lymphoma-and-plasma-cell-myeloma-a-diagnostic-challenge
#7
Ahmad T Mansour, Alaleh Esmaeili Shandiz, Michelle K Zimmerman, Trenton D Roth, Jiehao Zhou
BACKGROUND: Lymphoplasmacytic lymphoma and plasma cell myeloma are two B cell lymphoproliferative neoplasms derived from mature B-lymphocytes in different differentiation stages. The coexistence of these two tumors in the same patient is exceedingly rare and can be difficult to diagnose. CASE PRESENTATION: A 76-year-old male presented with a pathologic fracture after a fall. Radiography showed a lytic lesion in the pelvis. Serum immunofixation showed distinct IgM kappa and IgA kappa monoclonal protein bands...
2017: American Journal of Blood Research
https://www.readbyqxmd.com/read/28532866/the-effects-of-12-weeks-pilates-inspired-exercise-training-on-functional-performance-in-older-women-a-randomized-clinical-trial
#8
Natália Donzeli Vieira, Daniela Testa, Paula Cristine Ruas, Tânia de Fátima Salvini, Aparecida Maria Catai, Ruth Caldeira Melo
BACKGROUND: Recent scientific evidence supports the benefits of Pilates exercises on postural balance and muscle strength of older persons. However, their effects on other aspects of physical fitness, which are also important for independent living in older age, are still unknown. OBJECTIVE: To investigate the effects of a 12-week Pilates-inspired exercise program on the functional performance of community-dwelling older women. METHODS: Forty community-dwelling older women were randomly enrolled in a Pilates-inspired exercise training (2 times/week, 60 min/session) (PG, n = 21, 66...
April 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28532026/high-performance-hydrogen-sensor-based-on-mn-implanted-zno-nanowires-array-fabricated-on-ito-substrate
#9
A Renitta, K Vijayalakshmi
In the present research, we propose a novel approach for the detection of hydrogen gas using Mn implanted ZnO nanowires fabricated onto ITO coated glass substrate by chemical spray pyrolysis deposition. The effect of Mn concentration on the structural, optical and morphological properties of ZnO films were investigated. X-ray diffraction studies showed that the Mn implanted ZnO films were grown as a polycrystalline hexagonal wurtzite phase without any impurities. The (101) peak position of ZnO-Mn films was shifted towards a lower angle with increasing Mn concentration...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28530748/photomultiplication-type-narrowband-organic-photodetectors-working-at-forward-and-reverse-bias
#10
Jianli Miao, Fujun Zhang, Mingde Du, Wenbin Wang, Ying Fang
It is a great challenge to obtain narrowband and photomultiplication (PM) type organic photodetectors (OPDs) without optical filters due to the broad absorption range and large exciton binding energy of organic materials. Narrowband OPDs with the special structure of ITO/PFN-OX/P3HT : PC61BM (100 : 1,wt/wt)/Al were successfully fabricated with different active layer thicknesses, exhibiting a tunable response window and PM phenomenon under bi-directional bias. The OPDs exhibit U-shaped EQE spectra with two narrowband response windows under forward bias and a single narrowband response window under reverse bias...
May 22, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28530410/correction-to-kujawa-proudfit-and-klein-2014
#11
(no author information available yet)
Reports an error in "Neural reactivity to rewards and losses in offspring of mothers and fathers with histories of depressive and anxiety disorders" by Autumn Kujawa, Greg Hajcak Proudfit and Daniel N. Klein (Journal of Abnormal Psychology, 2014[May], Vol 123[2], 287-297). In the original article, there was an error in the Measures section. The article stated that the EEG data were band-pass filtered with cutoffs of 0.1 and 30 Hz and baseline corrected using the 200 ms interval prior to feedback. Instead, the data were actually filtered with cutoffs of 0...
May 22, 2017: Journal of Abnormal Psychology
https://www.readbyqxmd.com/read/28530289/ca-nir-a-ratiometric-near-infrared-calcium-probe-based-on-a-dihydroxanthene-hemicyanine-fluorophore
#12
Mayeul Collot, Flavien Ponsot, Andrey S Klymchenko
Fluorescent calcium probes are essential tools for studying the fluctuation of calcium ions in cells. Herein, we developed Ca-NIR, the first ratiometric calcium probe emitting in the near infrared region. This probe arose from the fusion of a BAPTA chelator and a dihydroxanthene-hemicyanine fluorophore. It is efficiently excited with common 630-640 nm lasers and displays two distinct emission bands depending on the calcium concentration (Kd = ∼8 μM). The physicochemical and spectroscopic properties of Ca-NIR allowed for ratiometric imaging of calcium distribution in live cells...
May 22, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28530190/green-synthesis-of-ce2o3-nps-and-determination-of-its-antioxidant-activity
#13
Hayrunnisa Nadaroglu, Hicran Onem, Azize Alayli Gungor
In this study, the authors presented synthesis of ceria nanoparticles (NPs) by the bio-reduction method and their antioxidative activity. Aqueous extract of Euphorbia (Euphorbia amygdaloides) was used as reducing and stabilising agents. They used aqueous extract of Euphorbia (E. amygdaloides) as reducing and stabilising agent. Ultraviolet-visible (UV-vis) absorption spectroscopy was used to monitor the quantitative formation of ceria NPs. They also addressed the characteristics of the obtained ceria NPs using scanning electron microscopy (SEM), X-ray diffraction (XRD) and transmitting electron microscope (TEM)...
June 2017: IET Nanobiotechnology
https://www.readbyqxmd.com/read/28530099/a-p-type-zinc-based-metal-organic-framework
#14
Congcong Shang, Romain Gautier, Tengfei Jiang, Eric Faulques, Camille Latouche, Michael Paris, Laurent Cario, Martine Bujoli-Doeuff, Stéphane Jobic
An original concept for the property tuning of semiconductors is demonstrated by the synthesis of a p-type zinc oxide (ZnO)-like metal-organic framework (MOF), (ZnC2O3H2)n, which can be regarded as a possible alternative for ZnO, a natural n-type semiconductor. When small oxygen-rich organic linkers are introduced to the Zn-O system, oxygen vacancies and a deep valence-band maximum, the two obstacles for generating p-type behavior in ZnO, are restrained and raised, respectively. Further studies of this material on the doping and photoluminescence behaviors confirm its resemblance to metal oxides (MOs)...
May 22, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28528848/temporal-expectancies-driven-by-self-and-externally-generated-rhythms
#15
Alexander Jones, Yi-Fang Hsu, Lionel Granjon, Florian Waszak
The dynamic attending theory proposes that rhythms entrain periodic fluctuations of attention which modulate the gain of sensory input. However, temporal expectancies can also be driven by the mere passage of time (foreperiod effect). It is currently unknown how these two types of temporal expectancy relate to each other, i.e. whether they work in parallel and have distinguishable neural signatures. The current research addresses this issue. Participants either tapped a 1Hz rhythm (active task) or were passively presented with the same rhythm using tactile stimulators (passive task)...
May 18, 2017: NeuroImage
https://www.readbyqxmd.com/read/28528255/molecular-structure-second-and-third-order-nonlinear-optical-properties-and-dft-studies-of-a-novel-non-centrosymmetric-chalcone-derivative-2e-3-4-fluorophenyl-1-4-1e-4-fluorophenyl-methylene-amino-phenyl-prop-2-en-1-one
#16
Shivaraj R Maidur, Parutagouda Shankaragouda Patil, Anusha Ekbote, Tze Shyang Chia, Ching Kheng Quah
In the present work, the title chalcone, (2E)-3-(4-fluorophenyl)-1-(4-{[(1E)-(4-fluorophenyl) methylene]amino}phenyl)prop-2-en-1-one (abbreviated as FAMFC), was synthesized and structurally characterized by single-crystal X-ray diffraction. The compound is crystallized in the monoclinic system with non-centrosymmetric space group P21 and hence it satisfies the essential condition for materials to exhibit second-order nonlinear optical properties. The molecular structure was further confirmed by using FT-IR and (1)H NMR spectroscopic techniques...
May 9, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28528253/pressure-induced-transformations-in-sorbic-acid
#17
G D Saraiva, J R Maia, J A Lima, C E S Nogueira, P T C Freire, F F de Sousa, A M R Teixeira, J Mendes Filho
This research reports a pressure dependent Raman study of the sorbic acid between 0.0 and 10.0GPa. The unpolarized Raman spectra were measured in the spectral range of 20-3000cm(-1). The high-pressure Raman scattering study of the sorbic acid showed that it underwent a gradual, disordering process. At the room temperature and at the ambient pressure conditions, the crystal structure of the sorbic acid belongs to the monoclinic system with a C2/c (C2h(6)) space group. The pressure increase induced a higher disorder in the monoclinic unit cell, since a single bending mode, and only very broad stretching Raman modes are present at pressure of ~10GPa...
May 10, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28527471/the-electron-shuffle-cerium-influences-samarium-4f-orbital-occupancy-in-heteronuclear-ce-sm-oxide-clusters
#18
Jared O Kafader, Josey E Topolski, Vicmarie Marrero-Colon, Srinivasan S Iyengar, Caroline Chick Jarrold
The anion photoelectron (PE) spectra along with supporting results of density functional theory (DFT) calculations on SmO(-), SmCeOy(-), and Sm2Oy(-) (y = 1, 2) are reported and compared to previous results on CeO(-) [M. Ray et al., J. Chem. Phys. 142, 064305 (2015)] and Ce2Oy(-) (y = 1, 2) [J. O. Kafader et al., J. Chem. Phys. 145, 154306 (2016)]. Similar to the results on CexOy(-) clusters, the PE spectra of SmO(-), SmCeOy(-), and Sm2Oy(-) (y = 1, 2) all exhibit electronic transitions to the neutral ground state at approximately 1 eV e(-)BE...
May 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28527394/elucidation-of-penetration-enhancement-mechanism-of-emu-oil-using-ftir-microspectroscopy-at-emira-laboratory-of-sesame-synchrotron
#19
Randa S H Mansour, Alsayed A Sallam, Imad I Hamdan, Enam A Khalil, Ibraheem Yousef
It has been proposed that Emu oil possesses skin permeation-enhancing effect. This study aimed to address its possible penetration enhancement mechanism(s) using IR microscopy, in accordance with LPP theory. The penetration of Emu oil through the layers of human skin was accomplished by monitoring oil-IR characteristic feature at 3006cm(-1). The unsaturated components of Emu oil accumulated at about 270μm depth of skin surface. The interaction of Emu oil with lipid and protein constituents of SC was investigated in comparison with a commonly used enhancer, IPM...
May 12, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28527204/levetiracetam-alters-oscillatory-connectivity-in-alzheimer-s-disease
#20
Christian S Musaeus, Mouhsin M Shafi, Emiliano Santarnecchi, Susan T Herman, Daniel Z Press
Seizures occur at a higher frequency in people with Alzheimer's disease (AD) but overt, clinically obvious events are infrequent. Evidence from animal models and studies in mild cognitive impairment suggest that subclinical epileptic discharges may play a role in the clinical and pathophysiological manifestations of AD. In this feasibility study, the neurophysiological and cognitive effects of acute administration of levetiracetam (LEV) are measured in patients with mild AD to test whether it could have a therapeutic benefit...
May 17, 2017: Journal of Alzheimer's Disease: JAD
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