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https://www.readbyqxmd.com/read/29054404/fat-suppression-at-three-dimensional-t1-weighted-mr-imaging-of-the-hands-dixon-method-versus-chess-technique
#1
T Kirchgesner, V Perlepe, N Michoux, A Larbi, B Vande Berg
PURPOSE: To compare the effectiveness of fat suppression and the image quality of the Dixon method with those of the chemical shift-selective (CHESS) technique in hands of normal subjects at non-enhanced three-dimensional (3D) T1-weighted MR imaging. MATERIALS AND METHODS: Both hands of 14 healthy volunteers were imaged with 3D fast spoiled gradient echo (FSPGR) T1-weighted Dixon, 3D FSPGR T1-weighted CHESS and 3D T1-weighted fast spin echo (FSE) CHESS sequences in a 1...
October 17, 2017: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/29047615/optimal-micro-mirror-tilt-angle-and-sync-mark-design-for-digital-micro-mirror-device-based-collinear-holographic-data-storage-system
#2
Jinpeng Liu, Hideyoshi Horimai, Xiao Lin, Jinyan Liu, Yong Huang, Xiaodi Tan
The collinear holographic data storage system (CHDSS) is a very promising storage system due to its large storage capacities and high transfer rates in the era of big data. The digital micro-mirror device (DMD) as a spatial light modulator is the key device of the CHDSS due to its high speed, high precision, and broadband working range. To improve the system stability and performance, an optimal micro-mirror tilt angle was theoretically calculated and experimentally confirmed by analyzing the relationship between the tilt angle of the micro-mirror on the DMD and the power profiles of diffraction patterns of the DMD at the Fourier plane...
June 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/29047181/a-rotaxane-scaffold-for-the-construction-of-multiporphyrinic-light-harvesting-devices
#3
Jean-Francois Nierengarten, Béatrice Delavaux-Nicot, Haifa Ben Aziza, Iwona Nierengarten, Thi Minh Nguyet Trinh, Eric Meichsner, Matthieu Chessé, Michel Holler, Rym Abidi, Emmanuel Maisonhaute
A sophisticated photoactive molecular device has been prepared by combining recent concepts for the preparation of multifunctional nanomolecules (click chemistry on multifunctional scaffolds) with supramolecular chemistry (self-assembly to prepare rotaxanes). Specifically, a clickable [2]rotaxane scaffold incorporating a free-base porphyrin stopper has been prepared and functionalized with ten peripheral Zn(II)-porphyrin moieties. Electrochemical investigations of the final compound revealed a peculiar behavior resulting from the intramolecular coordination of the Zn(II) porphyrin moieties to 1,2,3-triazole units...
October 19, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29026739/mohalla-clinics-of-delhi-india-could-these-become-platform-to-strengthen-primary-healthcare
#4
EDITORIAL
Chandrakant Lahariya
The mohalla or community clinics in Delhi, India aims to provide basic health services to underserved population in urban settings. This article reviews and analyzes the strengths & limitations of the concept and explores the role these clinics can play in (1) reforming urban health service delivery, (2) addressing health inequities, and (3) strengthening primary health care. These clinics provide basic healthcare services to people, in underserved areas, in a responsive manner, have brought health higher on the political agenda and the governments of a number of Indian states have shown interest in adoption (of a variant) of this concept...
January 2017: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/28964945/validation-of-a-predictive-scoring-system-for-ventriculoperitoneal-shunt-insertion-following-aneurysmal-subarachnoid-hemorrhage
#5
Raghav Gupta, Luis C Ascanio, Alejandro Enriquez-Marulanda, Christoph J Griessenauer, Anu Chinnadurai, Ray Jhun, Abdulrahman Alturki, Christopher S Ogilvy, Ajith J Thomas, Justin M Moore
INTRODUCTION: Hydrocephalus is a frequently encountered complication in the context of aneurysmal subarachnoid hemorrhage (aSAH). Here, we performed an external validation of the recently proposed Post-Subarachnoid Shunt Scoring (PS3) system, which aims to stratify patients presenting with aSAH based on their relative risk of requiring ventriculoperitoneal (VP) shunt insertion. MATERIALS AND METHODS: A retrospective review of all patients presenting with aSAH to our institution between July 2007 and December 2016, who underwent CT imaging at the time of hospital admission, was performed...
September 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28922091/how-cancer-patients-use-and-benefit-from-an-interactive-cancer-communication-system
#6
Jeong Yeob Han, Robert Hawkins, Timothy Baker, Dhavan V Shah, Suzanne Pingree, David H Gustafson
Despite the mounting evidence of efficacy of eHealth interventions, their mechanisms of action remain unknown. The current study analyzed patient log data as each patient engaged in an eHealth system called the Comprehensive Health Enhancement Support System (CHESS) and reports on how patients engage with different combinations of eHealth services over time. Newly diagnosed breast cancer patients (N = 443) were given access for 6 months to one of four different configurations of CHESS: (1) Information, (2) Information and Support, (3) Information, Support, and Coaching (Full CHESS), and (4) Full CHESS and Mentor...
September 18, 2017: Journal of Health Communication
https://www.readbyqxmd.com/read/28873312/efficient-computation-of-sparse-matrix-functions-for-large-scale-electronic-structure-calculations-the-chess-library
#7
Stephan Mohr, William Dawson, Michael Wagner, Damien Caliste, Takahito Nakajima, Luigi Genovese
We present CheSS, the "Chebyshev Sparse Solvers" library, which has been designed to solve typical problems arising in large-scale electronic structure calculations using localized basis sets. The library is based on a flexible and efficient expansion in terms of Chebyshev polynomials and presently features the calculation of the density matrix, the calculation of matrix powers for arbitrary powers, and the extraction of eigenvalues in a selected interval. CheSS is able to exploit the sparsity of the matrices and scales linearly with respect to the number of nonzero entries, making it well-suited for large-scale calculations...
September 27, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28870834/prevalence-of-preventive-cardiovascular-medication-use-in-nursing-home-residents-room-for-deprescribing-the-shelter-study
#8
Alireza Malek Makan, Hein van Hout, Graziano Onder, Harriet Finne-Soveri, Henriëtte van der Roest, Rob van Marum
INTRODUCTION: In nursing home (NH) residents with a very short life expectancy, the benefits of preventive cardiovascular medication maintenance are questionable. OBJECTIVE: To assess the prevalence of 4 classes of preventive cardiovascular medication (PCM) in NH residents, and to explore differences of prevalence across length of stay, mortality risk, cognitive impairment, functional disability, and across countries. METHODS: A 12-month prospective cohort study was conducted in 57 NHs in 8 countries (Czech Republic, England, Finland, France, Germany, Italy, The Netherlands, and Israel)...
September 1, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28820199/tuning-the-copper-ii-coordination-properties-of-cyclam-by-subtle-chemical-modifications
#9
Nathalie Camus, Nathalie Le Bris, Selbi Nuryyeva, Matthieu Chessé, David Esteban-Gómez, Carlos Platas-Iglesias, Raphaël Tripier, Mourad Elhabiri
The acid-base and copper(ii) coordination properties of three previously described cyclam derivatives are reported. Potentiometry, mass spectrometry, UV-vis absorption spectroscopy, electrochemistry and theoretical calculations were combined to investigate the protonation and binding properties of Bn-cyclam-EtOH (L1), oxo-cyclam-EtOH (L2) and oxo-Bn-cyclam-EtOH (L3). These three cyclams are C-functionalized by a hydroxyethyl pendant arm and display either one N-benzyl group and/or an amide replacing one macrocyclic secondary amine...
August 29, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28817470/the-use-of-pharmacologic-cognitive-enhancers-in-competitive-chess
#10
Andreas G Franke, Pavel Dietz, Karla Ranft, Harald Balló, Perikles Simon, Klaus Lieb
No abstract text is available yet for this article.
November 2017: Epidemiology
https://www.readbyqxmd.com/read/28813563/chess-study-revives-debate-over-cognition-enhancing-drugs
#11
Jeff Lyon
No abstract text is available yet for this article.
September 5, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28801425/non-pharmacological-self-management-for-people-living-with-migraine-or-tension-type-headache-a-systematic-review-including-analysis-of-intervention-components
#12
Katrin Probyn, Hannah Bowers, Dipesh Mistry, Fiona Caldwell, Martin Underwood, Shilpa Patel, Harbinder Kaur Sandhu, Manjit Matharu, Tamar Pincus
OBJECTIVES: To assess the effect of non-pharmacological self-management interventions against usual care, and to explore different components and delivery methods within those interventions PARTICIPANTS: People living with migraine and/or tension-type headache INTERVENTIONS: Non-pharmacological educational or psychological self-management interventions; excluding biofeedback and physical therapy.We assessed the overall effectiveness against usual care on headache frequency, pain intensity, mood, headache-related disability, quality of life and medication consumption in meta-analysis...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28726819/catalogue-of-items-in-the-chess-exhibition-at-the-humanities-museum-pre-enlightenment-wing
#13
Alex Shvartsman
No abstract text is available yet for this article.
July 19, 2017: Nature
https://www.readbyqxmd.com/read/28692420/use-of-a-smartphone-recovery-tool-for-latinos-with-co-occurring-alcohol-and-other-drug-disorders-and-mental-disorders
#14
Jordana Muroff, Winslow Robinson, Deborah Chassler, Luz M López, Erika Gaitan, Lena Lundgren, Claudia Guauque, Susan Dargon-Hart, Emily Stewart, Diliana Dejesus, Kimberly Johnson, Klaren Pe-Romashko, David H Gustafson
OBJECTIVE: Addressing alcohol and other drug disorders (AOD) and other mental disorders (MD) among adult Hispanics/Latinos is of critical concern being one of the fastest growing ethnic groups with a disproportionate rate of disease, mental disorders, and poverty. Although improvement in outcomes is associated with sustained participation in ongoing treatment for co-occurring AOD/MD, continuing care is rare for these chronic conditions, especially for Latinos with more limited access to culturally and linguistically competent services...
July 10, 2017: Journal of Dual Diagnosis
https://www.readbyqxmd.com/read/28646322/does-chess-instruction-improve-mathematical-problem-solving-ability-two-experimental-studies-with-an-active-control-group
#15
Giovanni Sala, Fernand Gobet
It has been proposed that playing chess enables children to improve their ability in mathematics. These claims have been recently evaluated in a meta-analysis (Sala & Gobet, 2016, Educational Research Review, 18, 46-57), which indicated a significant effect in favor of the groups playing chess. However, the meta-analysis also showed that most of the reviewed studies used a poor experimental design (in particular, they lacked an active control group). We ran two experiments that used a three-group design including both an active and a passive control group, with a focus on mathematical ability...
June 23, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28636029/cross-impact-of-surface-and-interaction-anisotropy-in-the-self-assembly-of-organic-adsorption-monolayers-a-monte-carlo-and-transfer-matrix-study
#16
V A Gorbunov, S S Akimenko, A V Myshlyavtsev
Using a simple lattice gas model we study the features of self-assembly in adsorption layers where both "molecule-surface" and "molecule-molecule" interactions are anisotropic. Based on the example of adsorption layers of mono-functional organic molecules on the heterogeneous surface with strip-like topography, we have revealed plenty of possible self-assembled structures in this simple system, such as discrete, linear, zigzag, chess board-like, two-dimensional porous and close-packed patterns. However, the phase behavior of the adsorption layer is much richer, if the interactions between functional and non-functional parts of adjacent adsorbed molecules have comparable strength and opposite signs...
June 21, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28620199/predicting-the-outcomes-of-organic-reactions-via-machine-learning-are-current-descriptors-sufficient
#17
G Skoraczyński, P Dittwald, B Miasojedow, S Szymkuć, E P Gajewska, B A Grzybowski, A Gambin
As machine learning/artificial intelligence algorithms are defeating chess masters and, most recently, GO champions, there is interest - and hope - that they will prove equally useful in assisting chemists in predicting outcomes of organic reactions. This paper demonstrates, however, that the applicability of machine learning to the problems of chemical reactivity over diverse types of chemistries remains limited - in particular, with the currently available chemical descriptors, fundamental mathematical theorems impose upper bounds on the accuracy with which raction yields and times can be predicted...
June 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28615422/prognostic-factors-for-chronic-headache-a-systematic-review
#18
REVIEW
Katrin Probyn, Hannah Bowers, Fiona Caldwell, Dipesh Mistry, Martin Underwood, Manjit Matharu, Tamar Pincus
OBJECTIVE: To identify predictors of prognosis and trial outcomes in prospective studies of people with chronic headache. METHODS: This was a systematic review of published literature in peer-reviewed journals. We included (1) randomized controlled trials (RCTs) of interventions for chronic headache that reported subgroup analyses and (2) prospective cohort studies, published in English, since 1980. Participants included adults with chronic headache (including chronic headache, chronic migraine, and chronic tension-type headache with or without medication overuse headache)...
July 18, 2017: Neurology
https://www.readbyqxmd.com/read/28598279/a-novel-score-to-predict-shunt-dependency-after-aneurysmal-subarachnoid-hemorrhage
#19
Dominik Diesing, Stefan Wolf, Jenny Sommerfeld, Asita Sarrafzadeh, Peter Vajkoczy, Nora F Dengler
OBJECTIVE Feasible clinical scores for predicting shunt-dependent hydrocephalus (SDHC) after aneurysmal subarachnoid hemorrhage (aSAH) are scarce. The chronic hydrocephalus ensuing from SAH score (CHESS) was introduced in 2015 and has a high predictive value for SDHC. Although this score is easy to calculate, several early clinical and radiological factors are required. The authors designed the retrospective analysis described here for external CHESS validation and determination of predictive values for the radiographic Barrow Neurological Institute (BNI) scoring system and a new simplified combined scoring system...
June 9, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28596746/a-systematic-review-of-psychosocial-interventions-to-cancer-caregivers
#20
REVIEW
Fang Fu, Huaijuan Zhao, Feng Tong, Iris Chi
Objective: To systematically review the effect of psychosocial interventions on improving QoL, depression and anxiety of cancer caregivers. Methods: We conducted a systematic review of psychosocial interventions among adult cancer caregivers published from 2011 to 2016. PsycINFO, PubMed, Proquest, Cochrane Library, Embase, Applied Social Sciences Index and Abstracts (ASSIA), Cumulative Index to Nursing and Allied Health Literature, Social Sciences Citation Index (SSCI) and EBSCO, China National Knowledge Infrastructure (CNKI) and WANFANG were searched...
2017: Frontiers in Psychology
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