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https://www.readbyqxmd.com/read/29151202/nmr-of-macromolecular-assemblies-and-machines-at-1-ghz-and-beyond-new-transformative-opportunities-for-molecular-structural-biology
#1
Caitlin M Quinn, Mingzhang Wang, Tatyana Polenova
As a result of profound gains in sensitivity and resolution afforded by ultrahigh magnetic fields, transformative applications in the fields of structural biology and materials science are being realized. The development of dual low temperature superconducting (LTS)/high-temperature superconducting (HTS) magnets has enabled the achievement of magnetic fields above 1 GHz (23.5 T), which will open doors to an unprecedented new range of applications. In this contribution, we discuss the promise of ultrahigh field magnetic resonance...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29151135/classification-of-g-protein-coupled-receptors-based-on-a-rich-generation-of-convolutional-neural-network-n-gram-transformation-and-multiple-sequence-alignments
#2
Man Li, Cheng Ling, Qi Xu, Jingyang Gao
Sequence classification is crucial in predicting the function of newly discovered sequences. In recent years, the prediction of the incremental large-scale and diversity of sequences has heavily relied on the involvement of machine-learning algorithms. To improve prediction accuracy, these algorithms must confront the key challenge of extracting valuable features. In this work, we propose a feature-enhanced protein classification approach, considering the rich generation of multiple sequence alignment algorithms, N-gram probabilistic language model and the deep learning technique...
November 18, 2017: Amino Acids
https://www.readbyqxmd.com/read/29151003/lung-ultrasound-in-the-critically-ill-luci-a-translational-discipline
#3
Daniel A Lichtenstein, Manu L N G Malbrain
In the early days of ultrasound, it was not a translational discipline. The heart was claimed by cardiologists, with others, such as gynaecologists, urologists and vascular surgeons claiming their part while the rest was given to radiologists. Only recently, ultrasound transgressed and crossed the usual borders between the different disciplines, such as emergency and critical care medicine. The advent of portable machines in the early 1980s, allowed the critical care physician to perform bedside ultrasound, and the development of whole body critical care ultrasound (CCUS) was born...
November 18, 2017: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/29150472/are-food-and-drink-retailers-within-nhs-venues-adhering-to-nice-quality-standard-94-guidance-on-childhood-obesity-a-cross-sectional-study-of-two-large-secondary-care-nhs-hospitals-in-england
#4
Alice James, Laura Birch, Peter Fletcher, Sally Pearson, Catherine Boyce, Andy R Ness, Julian P Hamilton-Shield, Fiona E Lithander
OBJECTIVE: To assess whether the food and drink retail outlets in two major National Health Service (NHS) district general hospitals in England adhere to quality statements 1-3 of the UK National Institute for Health and Care Excellence (NICE) quality standard 94. DESIGN: Cross-sectional, descriptive study to assess the food and drink options available in vending machines, restaurants, cafes and shops in two secondary care hospitals. MAIN OUTCOME MEASURES: Adherence to quality statement 1 whereby the food and drink items available in the vending machines were classified as either healthy or less healthy using the Nutrient Profiling Model (NPM)...
November 16, 2017: BMJ Open
https://www.readbyqxmd.com/read/29150140/visual-pathways-from-the-perspective-of-cost-functions-and-multi-task-deep-neural-networks
#5
REVIEW
H Steven Scholte, Max M Losch, Kandan Ramakrishnan, Edward H F de Haan, Sander M Bohte
Vision research has been shaped by the seminal insight that we can understand the higher-tier visual cortex from the perspective of multiple functional pathways with different goals. In this paper, we try to give a computational account of the functional organization of this system by reasoning from the perspective of multi-task deep neural networks. Machine learning has shown that tasks become easier to solve when they are decomposed into subtasks with their own cost function. We hypothesize that the visual system optimizes multiple cost functions of unrelated tasks and this causes the emergence of a ventral pathway dedicated to vision for perception, and a dorsal pathway dedicated to vision for action...
October 7, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29150133/effect-of-coloring-and-sintering-on-the-translucency-and-biaxial-strength-of-monolithic-zirconia
#6
Nazmiye Sen, Ibrahim Bülent Sermet, Sevki Cinar
STATEMENT OF PROBLEM: The influences of coloring and sintering procedures on the optical and mechanical properties of monolithic zirconia have not been thoroughly investigated. PURPOSE: The purpose of this in vitro study was to investigate the effects of the coloring procedure and of varying final sintering temperatures on the translucency parameter (TP) and biaxial flexural strength (BFS) of monolithic zirconia. MATERIAL AND METHODS: Disk-shaped specimens (N=210) of 2 different monolithic zirconia brands (Vita YZ HT(White) [VYZa]; Vita YZ HT(Color) A2 [VYZb]; Prettau Zirkonzahn [PZ]; Prettau Anterior Zirkonzahn [PZA]) with a diameter of 15 mm and a thickness of 1...
November 15, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29150091/prediction-of-menarcheal-status-of-girls-using-voice-features
#7
Marcin D Bugdol, Monika N Bugdol, Anna M Lipowicz, Andrzej W Mitas, Maria J Bienkowska, Agata M Wijata
A method for evaluating the menarcheal status of girls on the basis of their voice features is presented in the paper. The registration procedure consists of voice recording and measuring 20 anthropological features. The input feature vector is a combination of voice and anthropometric parameters, counting 220 features. The optimal set of parameters was selected using five different methods: Method A - stepwise regression (first forward, then backward regression) performed on features with statistically different means/medians; Method B - stepwise regression (forward and backward) on all features, with age; Method C - stepwise regression as in B; including age, Method D - all features with statistically different means/medians, Method E - all features excluding age...
November 8, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29149880/analytical-performance-of-envisia-a-genomic-classifier-for-usual-interstitial-pneumonia
#8
Yoonha Choi, Jiayi Lu, Zhanzhi Hu, Daniel G Pankratz, Huimin Jiang, Manqiu Cao, Cristina Marchisano, Jennifer Huiras, Grazyna Fedorowicz, Mei G Wong, Jessica R Anderson, Edward Y Tom, Joshua Babiarz, Urooj Imtiaz, Neil M Barth, P Sean Walsh, Giulia C Kennedy, Jing Huang
BACKGROUND: Clinical guidelines specify that diagnosis of interstitial pulmonary fibrosis (IPF) requires identification of usual interstitial pneumonia (UIP) pattern. While UIP can be identified by high resolution CT of the chest, the results are often inconclusive, making surgical lung biopsy necessary to reach a definitive diagnosis (Raghu et al., Am J Respir Crit Care Med 183(6):788-824, 2011). The Envisia genomic classifier differentiates UIP from non-UIP pathology in transbronchial biopsies (TBB), potentially allowing patients to avoid an invasive procedure (Brown et al...
November 17, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29149877/key-bottlenecks-to-the-provision-of-safe-obstetric-anaesthesia-in-low-income-countries-a-cross-sectional-survey-of-64-hospitals-in-uganda
#9
Isabella Epiu, Agnes Wabule, Andrew Kambugu, Harriet Mayanja-Kizza, Jossy Verel Bahe Tindimwebwa, Gerald Dubowitz
BACKGROUND: Despite recent advances in surgery and anaesthesia which significantly improve safety, many health facilities in low-and middle-income countries (LMICs) remain chronically under-resourced with inability to cope effectively with serious obstetric complications (Knight et al., PLoS One 8:e63846, 2013). As a result many of these countries still have unacceptably high maternal and neonatal mortality rates. Recent data at the national referral hospitals in East Africa reported that none of the national referral hospitals met the World Federation of Societies of Anesthesiologists (WFSA) international standards required to provide safe obstetric anaesthesia (Epiu I: Challenges of Anesthesia in Low-and Middle-Income Countries...
November 17, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29149847/individuals-explanations-for-their-persistent-or-recurrent-low-back-pain-a-cross-sectional-survey
#10
Jenny Setchell, Nathalia Costa, Manuela Ferreira, Joanna Makovey, Mandy Nielsen, Paul W Hodges
BACKGROUND: Most people experience low back pain (LBP), and it is often ongoing or recurrent. Contemporary research knowledge indicates individual's pain beliefs have a strong effect on their pain experience and management. This study's primary aim was to determine the discourses (patterns of thinking) underlying people's beliefs about what causes their LBP to persist. The secondary aim was to investigate what they believed was the source of this thinking. METHODS: We used a primarily qualitative survey design: 130 participants answered questions about what caused their LBP to persist, and where they learned about these causes...
November 17, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29149695/rheo-optical-near-infrared-nir-spectroscopy-study-of-partially-miscible-polymer-blend-of-polymethyl-methacrylate-pmma-and-polyethylene-glycol-peg
#11
Hideyuki Shinzawa, Junji Mizukado
Tensile deformations of a partially miscible blend of polymethyl methacrylate (PMMA) and polyethylene glycol (PEG) is studied by a rheo-optical characterization near-infrared (NIR) technique to probe deformation behavior during tensile deformation. Sets of NIR spectra of the polymer samples were collected by using an acousto-optic tunable filter (AOTF) NIR spectrometer coupled with a tensile testing machine as an excitation device. While deformations of the samples were readily captured as strain-dependent NIR spectra, the entire feature of the spectra was overwhelmed with the baseline fluctuation induced by the decrease in the sample thickness and subsequent change in the light scattering...
November 11, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29149684/combining-benford-s-law-and-machine-learning-to-detect-money-laundering-an-actual-spanish-court-case
#12
Elena Badal-Valero, José A Alvarez-Jareño, Jose M Pavía
OBJECTIVES: This paper is based on the analysis of the database of operations from a macro-case on money laundering orchestrated between a core company and a group of its suppliers, 26 of which had already been identified by the police as fraudulent companies. In the face of a well-founded suspicion that more companies have perpetrated criminal acts and in order to make better use of what are very limited police resources, we aim to construct a tool to detect money laundering criminals...
November 11, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29149465/controlled-sol-gel-transitions-of-a-thermoresponsive-polymer-in-a-photoswitchable-azobenzene-ionic-liquid-as-a-molecular-machine
#13
Masayoshi Watanabe, Caihong Wang, Kei Hashimoto, Ryota Tamate, Hisashi Kokubo
Producing ionic liquids (ILs) that function as molecular machines for macroscopic change is a challenging issue. We report that photoisomerization of an azobenzene IL at the molecular level could evoke a macroscopic response (light-controlled mechanical sol-gel transitions) for ABA triblock copolymer solutions. The A endblocks, poly(2-phenylethyl methacrylate), show a low critical solution temperature in the IL mixture containing azobenzene while the B midblock, poly(methyl methacrylate), is compatible with the mixture...
November 17, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/29149245/high-dimensional-therapeutic-inference-in-the-focally-damaged-human-brain
#14
Tianbo Xu, Hans Rolf Jäger, Masud Husain, Geraint Rees, Parashkev Nachev
Though consistency across the population renders the extraordinarily complex functional anatomy of the human brain surveyable, the inverse inference-from common functional maps to individual behaviour-is constrained by marked individual deviation from the population mean. Such inference is fundamental to the evaluation of therapeutic interventions in focal brain injury, where the impact of an induced structural change in the brain is quantified by its behavioural consequences, inevitably refracted through the lens of lesion-outcome relations...
November 15, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29149087/taxonomic-classification-for-living-organisms-using-convolutional-neural-networks
#15
Saed Khawaldeh, Usama Pervaiz, Mohammed Elsharnoby, Alaa Eddin Alchalabi, Nayel Al-Zubi
Taxonomic classification has a wide-range of applications such as finding out more about evolutionary history. Compared to the estimated number of organisms that nature harbors, humanity does not have a thorough comprehension of to which specific classes they belong. The classification of living organisms can be done in many machine learning techniques. However, in this study, this is performed using convolutional neural networks. Moreover, a DNA encoding technique is incorporated in the algorithm to increase performance and avoid misclassifications...
November 17, 2017: Genes
https://www.readbyqxmd.com/read/29149053/laser-induced-breakdown-spectroscopy-for-rapid-discrimination-of-heavy-metal-contaminated-seafood-tegillarca-granosa
#16
Guoli Ji, Pengchao Ye, Yijian Shi, Leiming Yuan, Xiaojing Chen, Mingshun Yuan, Dehua Zhu, Xi Chen, Xinyu Hu, Jing Jiang
Tegillarca granosa samples contaminated artificially by three kinds of toxic heavy metals including zinc (Zn), cadmium (Cd), and lead (Pb) were attempted to be distinguished using laser-induced breakdown spectroscopy (LIBS) technology and pattern recognition methods in this study. The measured spectra were firstly processed by a wavelet transform algorithm (WTA), then the generated characteristic information was subsequently expressed by an information gain algorithm (IGA). As a result, 30 variables obtained were used as input variables for three classifiers: partial least square discriminant analysis (PLS-DA), support vector machine (SVM), and random forest (RF), among which the RF model exhibited the best performance, with 93...
November 17, 2017: Sensors
https://www.readbyqxmd.com/read/29148912/influence-of-different-restoration-techniques-on-fracture-resistance-of-root-filled-teeth-in-vitro-investigation
#17
M E Hshad, E E Dalkılıç, G C Ozturk, I Dogruer, F Koray
OBJECTIVE: The purpose of this study was to determine the fracture strength of endodontically treated mandibular premolar teeth restored with composites and different reinforcement techniques. METHODS AND MATERIALS: Forty-eight freshly extracted human mandibular premolar teeth were randomly divided into four groups: group IN, group CR, group FRC, and group PRF. Group IN consisted of teeth with intact crowns and served as the control group. In the other three groups, endodontic treatment was performed and standard mesio-occluso-distal (MOD) cavities were prepared...
November 17, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/29148570/robust-optimization-in-impt-using-quadratic-objective-functions-to-account-for-the-minimum-mu-constraint
#18
Jie Shan, Yu An, Martin Bues, Steven E Schild, Wei Liu
PURPOSE: Currently, in clinical practice of intensity-modulated proton therapy (IMPT), the influence of the minimum monitor unit (MU) constraint is taken into account through post-processing after the optimization is completed. This may degrade the plan quality and plan robustness. This study aims to mitigate the impact of the minimum MU constraint directly during the plan robust optimization. METHODS AND MATERIALS: Cao et al. have demonstrated a two-stage method to account for the minimum MU constraint using linear programming without the impact of uncertainties considered...
November 17, 2017: Medical Physics
https://www.readbyqxmd.com/read/29148121/position-accuracy-of-implant-analogs-on-3d-printed-polymer-versus-conventional-dental-stone-casts-measured-using-a-coordinate-measuring-machine
#19
Marta Revilla-León, Óscar Gonzalez-Martín, Javier Pérez López, José Luis Sánchez-Rubio, Mutlu Özcan
PURPOSE: To compare the accuracy of implant analog positions on complete edentulous maxillary casts made of either dental stone or additive manufactured polymers using a coordinate measuring machine (CMM). MATERIAL AND METHODS: A completely edentulous maxillary model of a patient with 7 implant analogs was obtained. From this model, two types of casts were duplicated, namely conventional dental stone (CDS) using a custom tray impression technique after splinting (N = 5) and polymer cast using additive manufacturing based on the STL file generated...
November 17, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29148090/assessment-of-cumulative-health-risk-in-the-world-trade-center-general-responder-cohort
#20
Ghalib A Bello, Susan L Teitelbaum, Roberto G Lucchini, Christopher R Dasaro, Moshe Shapiro, Julia R Kaplan, Michael A Crane, Denise J Harrison, Benjamin J Luft, Jacqueline M Moline, Iris G Udasin, Andrew C Todd
BACKGROUND: Multiple comorbidities have been reported among rescue/recovery workers responding to the 9/11/2001 WTC disaster. In this study, we developed an index that quantifies the cumulative physiological burden of comorbidities and predicts life expectancy in this cohort. METHODS: A machine learning approach (gradient boosting) was used to model the relationship between mortality and several clinical parameters (laboratory test results, blood pressure, pulmonary function measures)...
November 17, 2017: American Journal of Industrial Medicine
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