keyword
MENU ▼
Read by QxMD icon Read
search

prism

keyword
https://www.readbyqxmd.com/read/28103019/highly-water-stable-novel-lanthanide-wheel-cluster-organic-frameworks-featuring-coexistence-of-hydrophilic-cage-like-chambers-and-hydrophobic-nanosized-channels
#1
Yuan-Yuan Zhou, Yang Shi, Bing Geng, Qi-Bing Bo
In attempts to investigate the potential luminescent sensing materials for sensitive detection of environmental pollutants, a new family of lanthanide wheel cluster organic frameworks (Ln-WCOFs) UJN-Ln4 has been constructed by employing one of the cycloalkane dicarboxylic acid derivatives. Adopting different conformations, the ligand links Ln4 second building units (SBUs) and Ln24 tertiary building unit (TBUs) to form a unique wheel cluster layer-pillared 3D framework featuring the coexistence of hydrophobic nanosized channels and trigonal anti-prism arrays with hydrophilic cage-like chambers...
January 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28102678/a-self-assembled-cofacial-cobalt-porphyrin-prism-for-oxygen-reduction-catalysis
#2
Amanda N Oldacre, Alan E Friedman, Timothy R Cook
Herein we report the first study of the oxygen reduction reaction (ORR) catalyzed by a cofacial porphyrin scaffold accessed in high yield (overall 53%) using coordination-driven self-assembly with no chromatographic purification steps. The ORR activity was investigated using chemical and electrochemical techniques on monomeric cobalt(II) tetra(meso-4-pyridyl)porphyrinate (CoTPyP) and its cofacial analogue [Ru8(η(6)-iPrC6H4Me)8(dhbq)4(CoTPyP)2][OTf]8 (Co Prism) (dhbq = 2,5-dihydroxy-1,4-benzoquinato, OTf = triflate) as homogeneous oxygen reduction catalysts...
January 19, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28095087/binocular-and-accommodative-characteristics-in-a-normal-population
#3
AbbasAli Yekta, Mehdi Khabazkhoob, Hassan Hashemi, Hadi Ostadimoghaddam, Somayeh Ghasemi-Moghaddam, Javad Heravian, Asgar Doostdar, Payam Nabovati
PURPOSE: To study binocular and accommodative characteristics and their associations with age and gender in an Iranian young adult population. METHODS: In this cross-sectional study, multistage cluster sampling was done from the students of Mashhad University of Medical Sciences. All participants had visual acuity, refraction, and cover tests followed by measurements of the near point of convergence (NPC), amplitude of accommodation (AA), monocular and binocular accommodative facility (MAF and BAF) using ±2...
January 17, 2017: Strabismus
https://www.readbyqxmd.com/read/28092393/surgical-treatment-of-adult-onset-esotropia-characteristics-and-outcomes
#4
Sara F Grace, Kara M Cavuoto, Wei Shi, Hilda Capo
PURPOSE: To describe the characteristics of the strabismus, surgical management, and outcomes of patients who underwent surgery for adult-onset esotropia. METHODS: This was a retrospective case study of patients at an academic tertiary referral center who underwent surgical treatment of esotropia acquired at or after age 18 years. Primary outcome measures were resolution of diplopia in primary position and a deviation of 10 prism diopters or less in primary gaze...
January 13, 2017: Journal of Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28091443/molecular-characterization-of-exon-28-of-von-willebrand-s-factor-gene-in-nigerian-population
#5
E D Ezigbo, E O Ukaejiofo, T U Nwagha
BACKGROUND: Polymorphisms in von Willebrand factor (VWF) gene are an important contributor to the expression of VWF gene and differences in ethnic distribution of these single nucleotide polymorphisms (SNPs) exists. AIMS: Our objective was to molecularly characterize the exon 28 of the VWF gene in the three major ethnic groups of Nigeria. SUBJECTS AND METHODS: We recruited 90 subjects, 45 had a history of bleeding. Questions included those used in the Zimmerman Program for the Molecular and Clinical Biology of von Willebrand disease (VWD), and the bleeding scores were calculated using the Molecular and Clinical Markers for the Diagnosis and Management of type 1 VWD scoring system...
February 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28089744/predictors-of-surgical-success-in-patients-with-intermittent-exotropia
#6
Di Zou, Clémentine Casafina, Alex Whiteman, Saurabh Jain
BACKGROUND: In patients with moderate- to large-angle exotropic deviations, surgical correction remains the definitive treatment. The purpose of this study was to identify preoperative factors that correlate with surgical success and to produce a binomial model that predicts success based on preoperative factors. METHODS: We performed a retrospective review of patients with intermittent exotropia who underwent uniocular recession-resection surgery. Success was defined as ocular deviation ≤10(Δ) exotropia and ≤5(Δ) esotropia at distance at last follow-up (at least 3 months' postoperatively)...
January 9, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28089390/quantitative-evaluation-of-the-in-vivo-vocal-fold-medial-surface-shape
#7
Andrew M Vahabzadeh-Hagh, Zhaoyan Zhang, Dinesh K Chhetri
OBJECTIVES/HYPOTHESIS: Glottal insufficiency is a common clinical problem in otolaryngology and medialization laryngoplasty (ML) procedures remain the primary treatment modality. Although the goal of ML is to restore physiologic glottal posture and achieve optimal phonation, this posture has not been directly measured. In this study, we assessed glottal medial surface contour changes with selective activation of the intrinsic laryngeal muscles (ILMs). STUDY DESIGN: Basic science study using an in vivo canine hemilarynx model...
January 12, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28079906/4d-and-5d-bimetal-doped-tubular-silicon-clusters-si12m2-with-m-nb-ta-mo-and-w-a-bimetallic-configuration-model
#8
Hung Tan Pham, Devashis Majumdar, Jerzy Leszczynski, Minh Tho Nguyen
Geometries and electronic properties related to the ground state stabilities of several Si12M2 clusters (M: second-row (Nb and Mo) and third-row (Ta and W) transition metals, and their mixed bimetallic clusters M2: NbMo and TaW) were explored using density functional theory (DFT) computations. The computed results show that two different structural motifs emerge as the global energy minima of such clusters. They are basically singlet tubular structures in either a C2v prism ((1)A1) or a C6v antiprism ((1)A1) form...
January 12, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28074113/genetic-polymorphisms-of-human-cytochrome-p450-cyp1a1-in-an-egyptian-population-and-tobacco-induced-lung-cancer
#9
Nada Ezzeldin, Dalia El-Lebedy, Amira Darwish, Ahmed El-Bastawisy, Mirhane Hassan, Shereen Abd El-Aziz, Mohamed Abdel-Hamid, Amal Saad-Hussein
BACKGROUND: Cytochrome P450 CYP1A1 helps detoxify the potential carcinogens in tobacco smoke, it was reported that polymorphisms in the coding gene result in variation in the expression and activity levels which alter metabolism and clearance of carcinogens and therefore modify cancer risk. In this work, we aimed to identify CYP1A1 gene polymorphisms associated with lung cancer in Egyptian population and to examine the interaction effect with Tobacco smoking in modulating disease risk...
2017: Genes and Environment: the Official Journal of the Japanese Environmental Mutagen Society
https://www.readbyqxmd.com/read/28072671/evaluation-of-the-association-of-early-elevated-lactate-with-outcomes-in-children-with-severe-sepsis-or-septic-shock
#10
Noelle Gorgis, Jeannette M Asselin, Cynthia Fontana, R Scott Heidersbach, Heidi R Flori, Shan L Ward
OBJECTIVE: The aim of the study was to assess the association of initial lactate (L0) with mortality in children with severe sepsis. METHODS: This prospective cohort study included 74 patients younger than 18 years with severe sepsis admitted to the pediatric intensive care unit (PICU) of a tertiary, academic children's hospital with lactate measured within 3 hours of meeting severe sepsis or septic shock. The primary outcome was in-hospital mortality. The secondary outcomes included PICU and hospital length of stay...
January 9, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28067993/on-the-structure-property-relationships-of-cation-exchanged-zk-5-zeolites-for-co2-adsorption
#11
Trong Pham, Raul Lobo, Matthew Hudson, Craig Brown
The CO2 adsorption properties of cation-exchanged Li-, Na-, K-, and Mg-ZK-5 zeolites are correlated to the molecular structures determined by Rietveld refinements of synchrotron powder X-ray diffraction patterns. Li-, K-, and Na-ZK-5 all exhibit high isosteric heats of adsorption (Qst) at low CO2 coverage, with Na-ZK-5 having the highest Qst (≈49 kJ/mol). Mg2+ is located at the center of the zeolite hexagonal prism, with the cation inaccessible to CO2, leading to a much lower Qst (≈30 kJ/mol) and lower overall uptake capacity...
January 9, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28063340/design-and-commissioning-of-an-aberration-corrected-ultrafast-spin-polarized-low-energy-electron-microscope-with-multiple-electron-sources
#12
Weishi Wan, Lei Yu, Lin Zhu, Xiaodong Yang, Zheng Wei, Jefferson Zhe Liu, Jun Feng, Kai Kunze, Oliver Schaff, Ruud Tromp, Wen-Xin Tang
We describe the design and commissioning of a novel aberration-corrected low energy electron microscope (AC-LEEM). A third magnetic prism array (MPA) is added to the standard AC-LEEM with two prism arrays, allowing the incorporation of an ultrafast spin-polarized electron source alongside the standard cold field emission electron source, without degrading spatial resolution. The high degree of symmetries of the AC-LEEM are utilized while we design the electron optics of the ultrafast spin-polarized electron source, so as to minimize the deleterious effect of time broadening, while maintaining full control of electron spin...
December 27, 2016: Ultramicroscopy
https://www.readbyqxmd.com/read/28059393/picosecond-high-power-355-nm-uv-generation-in-cslib-sub-6-sub-o-sub-10-sub-crystal
#13
Kentaro Ueda, Yosuke Orii, Yoshinori Takahashi, George Okada, Yusuke Mori, Masashi Yoshimura
We report third-harmonic generation (THG) at 355 nm in CsLiB<sub>6</sub>O<sub>10</sub> (CLBO) by using sum-frequency mixing process. As a fundamental laser source, we employ a hybrid master oscillator power amplifier (MOPA) system seeded by a gain-switched laser diode (GS-LD) at 1064 nm to produce narrow spectral picosecond pulses. Both CLBO and walk-off compensated prism-coupled CLBO device generate over 30-W output of 355-nm UV lights, which means walk-off effect in CLBO is negligible in the picosecond laser system...
December 26, 2016: Optics Express
https://www.readbyqxmd.com/read/28059290/self-calibration-single-lens-3d-video-extensometer-for-high-accuracy-and-real-time-strain-measurement
#14
Xinxing Shao, Mohammed Mokhtar Eisa, Zhenning Chen, Shuai Dong, Xiaoyuan He
The accuracy of strain measurement using a common optical extensometer with two-dimensional (2D) digital image correlation (DIC) is not sufficient for experimental applications due to the effect of out-of-plane motion. Although three-dimensional (3D) DIC can measure all three components of displacement without introducing in-plane displacement errors, 3D-DIC requires the stringent synchronization between two digital cameras and requires complicated system calibration of binocular stereovision, which makes the measurement rather inconvenient...
December 26, 2016: Optics Express
https://www.readbyqxmd.com/read/28057468/evaluation-of-a-newly-developed-mid-infrared-sensor-for-real-time-monitoring-of-yeast-fermentations
#15
Robert Schalk, Daniel Geoerg, Jens Staubach, Matthias Raedle, Frank-Juergen Methner, Thomas Beuermann
A mid-infrared (MIR) sensor using the attenuated total reflection (ATR) technique has been developed for real-time monitoring in biotechnology. The MIR-ATR sensor consists of an IR emitter as light source, a zinc selenide ATR prism as boundary to the process, and four thermopile detectors, each equipped with an optical bandpass filter. The suitability of the sensor for practical application was tested during aerobic batch-fermentations of Saccharomyces cerevisiae by simultaneous monitoring of glucose and ethanol...
January 2, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28057455/comparison-of-botulinum-toxin-with-surgery-for-the-treatment-of-acute-onset-comitant-esotropia-in-children
#16
Michael J Wan, Iason S Mantagos, Ankoor S Shah, Melanie Kazlas, David G Hunter
PURPOSE: To determine whether botulinum toxin is as effective as strabismus surgery in the treatment of acute-onset, comitant esotropia in children. DESIGN: Retrospective, non-randomized, comparative clinical study. METHODS: Setting: Tertiary care pediatric hospital. STUDY POPULATION: 49 children with acute-onset, comitant esotropia. INTERVENTION: Treatment with either botulinum toxin ("chemodenervation group") or standard incisional strabismus surgery ("surgery group")...
January 2, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28050473/evaluation-of-sinonasal-diseases-by-computed-tomography
#17
Rashmi Kandukuri, Suresh Phatak
INTRODUCTION: Computed Tomography (CT) plays an important diagnostic role in patients with sinonasal diseases and determines the treatment. The CT images clearly show fine structural architecture of bony anatomy thereby determining various anatomical variation, extent of disease and characterization of various inflammatory, benign and malignant sinonasal diseases. AIM: To evaluate sensitivity and specificity of CT in diagnosis of sinonasal diseases and to characterise the benign and malignant lesions with the help of various CT parameters...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28048833/su-g-iep1-13-sub-nyquist-dynamic-mri-via-prior-rank-intensity-and-sparsity-model-prism
#18
B Jiang, H Gao
PURPOSE: Accelerated dynamic MRI is important for MRI guided radiotherapy. Inspired by compressive sensing (CS), sub-Nyquist dynamic MRI has been an active research area, i.e., sparse sampling in k-t space for accelerated dynamic MRI. This work is to investigate sub-Nyquist dynamic MRI via a previously developed CS model, namely Prior Rank, Intensity and Sparsity Model (PRISM). METHODS: The proposed method utilizes PRISM with rank minimization and incoherent sampling patterns for sub-Nyquist reconstruction...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046680/su-f-j-14-kilovoltage-cone-beam-ct-dose-estimation-of-varian-on-board-imager-using-gmctdospp-monte-carlo-framework
#19
S Kim, D Rangaraj
PURPOSE: Although cone-beam CT (CBCT) imaging became popular in radiation oncology, its imaging dose estimation is still challenging. The goal of this study is to assess the kilovoltage CBCT doses using GMctdospp - an EGSnrc based Monte Carlo (MC) framework. METHODS: Two Varian OBI x-ray tube models were implemented in the GMctpdospp framework of EGSnrc MC System. The x-ray spectrum of 125 kVp CBCT beam was acquired from an EGSnrc/BEAMnrc simulation and validated with IPEM report 78...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28039678/studying-the-neural-bases-of-prism-adaptation-using-fmri-a-technical-and-design-challenge
#20
Janet H Bultitude, Alessandro Farnè, Romeo Salemme, Danielle Ibarrola, Christian Urquizar, Jacinta O'Shea, Jacques Luauté
Prism adaptation induces rapid recalibration of visuomotor coordination. The neural mechanisms of prism adaptation have come under scrutiny since the observations that the technique can alleviate hemispatial neglect following stroke, and can alter spatial cognition in healthy controls. Relative to non-imaging behavioral studies, fMRI investigations of prism adaptation face several challenges arising from the confined physical environment of the scanner and the supine position of the participants. Any researcher who wishes to administer prism adaptation in an fMRI environment must adjust their procedures enough to enable the experiment to be performed, but not so much that the behavioral task departs too much from true prism adaptation...
December 30, 2016: Behavior Research Methods
keyword
keyword
99743
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"