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https://www.readbyqxmd.com/read/27908178/a-probability-based-multi-cycle-sorting-method-for-4d-mri-a-simulation-study
#1
Xiao Liang, Fang-Fang Yin, Yilin Liu, Jing Cai
PURPOSE: To develop a novel probability-based sorting method capable of generating multiple breathing cycles of 4D-MRI images and to evaluate performance of this new method by comparing with conventional phase-based methods in terms of image quality and tumor motion measurement. METHODS: Based on previous findings that breathing motion probability density function (PDF) of a single breathing cycle is dramatically different from true stabilized PDF that resulted from many breathing cycles, it is expected that a probability-based sorting method capable of generating multiple breathing cycles of 4D images may capture breathing variation information missing from conventional single-cycle sorting methods...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27908077/tropical-littoral-ambient-noise-probability-density-function-model-based-on-sea-surface-temperature
#2
Piyush Asolkar, Arnab Das, Suhas Gajre, Yashwant Joshi
Ambient noise variability in tropical shallow water presents a critical challenge for sonar designers and operators due to site-specific sea surface fluctuations. Sea surface temperature (SST) is a direct measure of energy balance defining the local climate of the region and hence ambient noise characteristics. In this work, an ambient noise probability density function (pdf) model for a spectral band of 3-10 kHz has been designed based on the statistical distribution of SST and validated using real field data...
November 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27906279/adaptive-multifocus-image-fusion-using-block-compressed-sensing-with-smoothed-projected-landweber-integration-in-the-wavelet-domain
#3
Unni V S, Deepak Mishra, G R K S Subrahmanyam
The need for image fusion in current image processing systems is increasing mainly due to the increased number and variety of image acquisition techniques. Image fusion is the process of combining substantial information from several sensors using mathematical techniques in order to create a single composite image that will be more comprehensive and thus more useful for a human operator or other computer vision tasks. This paper presents a new approach to multifocus image fusion based on sparse signal representation...
December 1, 2016: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/27902898/volume-contents
#4
(no author information available yet)
Please see the PDF version of the Volume Contents, 2016.
December 2016: Avian Diseases
https://www.readbyqxmd.com/read/27898895/effects-of-subacute-ruminal-acidosis-and-low-feed-intake-on-short-chain-fatty-acid-transporters-and-flux-pathways-in-holstein-steers
#5
A H Laarman, R-L A Pederzolli, K M Wood, G B Penner, B W McBride
The objective of this study was to investigate the role of protein-mediated transport pathways for short-chain fatty acid flux across the ruminal epithelium, using subacute ruminal acidosis (SARA) and feed restriction as models. Twenty-one Holstein steers (216.8 ± 31.4 kg BW) were individually housed and fed a total mixed ration (TMR) with a 50:50 forage:concentrate ad libitum for 5 d. After the 5 d diet adjustment period, calves were assigned 1 of 3 treatments: control (CTRL) calves were fed the TMR ad libitum on d 1, subacute ruminal acidosis calves were given 25% of their ad libitum DMI on d 1 and then given a barley grain challenge at 30% of ad libitum DMI on d2 (ACID) calves were given 25% of their ad libitum DMI on d 1 and then given a barley grain challenge at 30% of ad libitum DMI on d 2, and feed restriction (FR) calves were given 25% of their ad libitum DMI for 5 d...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27881125/enhanced-expression-of-the-stemness-related-factors-oct4-sox15-and-twist1-in-ectopic-endometrium-of-endometriosis-patients
#6
Katharina Proestling, Peter Birner, Sukirthini Balendran, Nadine Nirtl, Erika Marton, Gülen Yerlikaya, Lorenz Kuessel, Theresa Reischer, Rene Wenzl, Berthold Streubel, Heinrich Husslein
BACKGROUND: Current evidence suggests that endometrial-derived stem cells, spilled in the peritoneal cavity via retrograde menstruation, are key players in the establishment of endometriotic lesions. The aim of this study was to determine the presence and distribution of the stemness-related factors OCT4, SOX15, TWIST1 and DCAMLK1 in women with and without endometriosis. METHODS: Immunohistochemical analysis was used to determine stromal and epithelial expression of OCT4, SOX15, TWIST1 and DCAMLK1 in endometriosis patient (EP) endometrium (n = 69) and endometriotic tissue (n = 90) and in control endometrium (n = 50)...
November 24, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27876082/evaluating-data-abstraction-assistant-a-novel-software-application-for-data-abstraction-during-systematic-reviews-protocol-for-a-randomized-controlled-trial
#7
Ian J Saldanha, Christopher H Schmid, Joseph Lau, Kay Dickersin, Jesse A Berlin, Jens Jap, Bryant T Smith, Simona Carini, Wiley Chan, Berry De Bruijn, Byron C Wallace, Susan M Hutfless, Ida Sim, M Hassan Murad, Sandra A Walsh, Elizabeth J Whamond, Tianjing Li
BACKGROUND: Data abstraction, a critical systematic review step, is time-consuming and prone to errors. Current standards for approaches to data abstraction rest on a weak evidence base. We developed the Data Abstraction Assistant (DAA), a novel software application designed to facilitate the abstraction process by allowing users to (1) view study article PDFs juxtaposed to electronic data abstraction forms linked to a data abstraction system, (2) highlight (or "pin") the location of the text in the PDF, and (3) copy relevant text from the PDF into the form...
November 22, 2016: Systematic Reviews
https://www.readbyqxmd.com/read/27875861/analyzing-signal-attenuation-in-pfg-anomalous-diffusion-via-a-non-gaussian-phase-distribution-approximation-approach-by-fractional-derivatives
#8
Guoxing Lin
Anomalous diffusion exists widely in polymer and biological systems. Pulsed-field gradient (PFG) techniques have been increasingly used to study anomalous diffusion in nuclear magnetic resonance and magnetic resonance imaging. However, the interpretation of PFG anomalous diffusion is complicated. Moreover, the exact signal attenuation expression including the finite gradient pulse width effect has not been obtained based on fractional derivatives for PFG anomalous diffusion. In this paper, a new method, a Mainardi-Luchko-Pagnini (MLP) phase distribution approximation, is proposed to describe PFG fractional diffusion...
November 21, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/27875234/a-pdf-free-change-detection-test-based-on-density-difference-estimation
#9
Li Bu, Cesare Alippi, Dongbin Zhao
The ability to detect online changes in stationarity or time variance in a data stream is a hot research topic with striking implications. In this paper, we propose a novel probability density function-free change detection test, which is based on the least squares density-difference estimation method and operates online on multidimensional inputs. The test does not require any assumption about the underlying data distribution, and is able to operate immediately after having been configured by adopting a reservoir sampling mechanism...
November 16, 2016: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/27859538/bacterial-peptide-deformylase-inhibition-of-tetrazole-substituted-biaryl-acid-analogs-synthesis-biological-evaluations-and-molecular-docking-study
#10
Firoz A Kalam Khan, Rajendra H Patil, Manjiri Patil, Rohidas Arote, Devanand B Shinde, Jaiprakash N Sangshetti
The synthesis and screening of tetrazole-substituted biaryl acid analogs 7a-l as bacterial peptide deformylase (PDF) enzyme inhibitors is reported. The compounds 7e (IC50 value = 5.50 μM) and 7g (IC50 value = 7.25 μM) showed good PDF inhibition activity. The compounds 7e (MIC range = 10.75-11.66 μg/mL) and 7g (MIC range = 8.91-12.83 μg/mL) also showed potent antibacterial activity when compared with the standard ciprofloxacin (MIC range = 25-50 μg/mL). Thus, the active derivatives were not only potent PDF enzyme inhibitors but also efficient antibacterial agents...
December 2016: Archiv der Pharmazie
https://www.readbyqxmd.com/read/27853240/modulation-of-light-driven-arousal-by-lim-homeodomain-transcription-factor-apterous-in-large-pdf-positive-lateral-neurons-of-the-drosophila-brain
#11
Naoto Shimada, Show Inami, Shoma Sato, Toshihiro Kitamoto, Takaomi Sakai
Apterous (Ap), the best studied LIM-homeodomain transcription factor in Drosophila, cooperates with the cofactor Chip (Chi) to regulate transcription of specific target genes. Although Ap regulates various developmental processes, its function in the adult brain remains unclear. Here, we report that Ap and Chi in the neurons expressing PDF, a neuropeptide, play important roles in proper sleep/wake regulation in adult flies. PDF-expressing neurons consist of two neuronal clusters: small ventral-lateral neurons (s-LNvs) acting as the circadian pacemaker and large ventral-lateral neurons (l-LNvs) regulating light-driven arousal...
November 17, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27852781/drosophila-dh31-neuropeptide-and-pdf-receptor-regulate-night-onset-temperature-preference
#12
Tadahiro Goda, Xin Tang, Yujiro Umezaki, Michelle L Chu, Fumika N Hamada
: Body temperature exhibits rhythmic fluctuations over a 24 h period (Refinetti and Menaker, 1992) and decreases during the night, which is associated with sleep initiation (Gilbert et al., 2004; Kräuchi, 2007a,b). However, the underlying mechanism of this temperature decrease is largely unknown. We have previously shown that Drosophila exhibit a daily temperature preference rhythm (TPR), in which their preferred temperatures increase during the daytime and then decrease at the transition from day to night (night-onset) (Kaneko et al...
November 16, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27851817/outage-probability-of-mrc-for-%C3%AE%C2%BA-%C3%AE-shadowed-fading-channels-under-co-channel-interference
#13
Changfang Chen, Minglei Shu, Yinglong Wang, Ming Yang, Chongqing Zhang
In this paper, exact closed-form expressions are derived for the outage probability (OP) of the maximal ratio combining (MRC) scheme in the κ-μ shadowed fading channels, in which both the independent and correlated shadowing components are considered. The scenario assumes the received desired signals are corrupted by the independent Rayleigh-faded co-channel interference (CCI) and background white Gaussian noise. To this end, first, the probability density function (PDF) of the κ-μ shadowed fading distribution is obtained in the form of a power series...
2016: PloS One
https://www.readbyqxmd.com/read/27830889/sectioned-images-and-surface-models-of-a-cadaver-for-understanding-the-free-vascularized-anterior-rib-flap
#14
Dong Sun Shin, Hyung Jun Kim, Bong Chul Kim
BACKGROUND: The purpose of this study is to describe the vascularized anterior rib flap on sectioned images and surface models using Visible Korean for medical education and clinical training in the field of mandibular reconstructive surgery. MATERIALS AND METHODS: Serially sectioned images of the thorax were obtained from a cadaver. Significant structures in the sectioned images were outlined and stacked to create a surface model. RESULTS: The PDF file (8...
November 10, 2016: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/27828334/novel-approximation-of-misalignment-fading-modeled-by-beckmann-distribution-on-free-space-optical-links
#15
Rubén Boluda-Ruiz, Antonio García-Zambrana, Carmen Castillo-Vázquez, Beatriz Castillo-Vázquez
A novel accurate and useful approximation of the well-known Beckmann distribution is presented here, which is used to model generalized pointing errors in the context of free-space optical (FSO) communication systems. We derive an approximate closed-form probability density function (PDF) for the composite gamma-gamma (GG) atmospheric turbulence with the pointing error model using the proposed approximation of the Beckmann distribution, which is valid for most practical terrestrial FSO links. This approximation takes into account the effect of the beam width, different jitters for the elevation and the horizontal displacement and the simultaneous effect of nonzero boresight errors for each axis at the receiver plane...
October 3, 2016: Optics Express
https://www.readbyqxmd.com/read/27820689/full-issue-pdf
#16
(no author information available yet)
No abstract text is available yet for this article.
November 2016: Operative Dentistry
https://www.readbyqxmd.com/read/27807795/can-we-shorten-the-q-space-imaging-to-make-it-clinically-feasible
#17
Koji Sakai, Kei Yamada, Kentaro Akazawa, Jun Tazoe, Masashi Yasuike, Hitomi Nagano, Hiroyasu Ikeno, Toshiaki Nakagawa
PURPOSE: Q-space imaging (QSI) is a novel magnetic resonance imaging (MRI) technique that enables assessment of micro-structural changes of white matter. The acquisition time, however, is comparatively long to use for routine clinical assessment. Therefore, the present study investigated the clinically feasible b value combinations to measure the water molecular displacement probability density function (PDF) in healthy subjects. METHODS: The subjects consisted of five healthy volunteers (1 female and 4 male; 40...
November 2, 2016: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/27802478/management-of-gout-a-systematic-review-in-support-of-an-american-college-of-physicians-clinical-practice-guideline
#18
Paul G Shekelle, Sydne J Newberry, John D FitzGerald, Aneesa Motala, Claire E O'Hanlon, Abdul Tariq, Adeyemi Okunogbe, Dan Han, Roberta Shanman
Background: Gout is a common type of inflammatory arthritis in patients seen by primary care physicians. Purpose: To review evidence about treatment of acute gout attacks, management of hyperuricemia to prevent attacks, and discontinuation of medications for chronic gout in adults. Data Sources: Multiple electronic databases from January 2010 to March 2016, reference mining, and pharmaceutical manufacturers. Study Selection: Studies of drugs approved by the U...
November 1, 2016: Annals of Internal Medicine
https://www.readbyqxmd.com/read/27801287/designing-synthesis-and-antimicrobial-action-of-oxazoline-and-thiazoline-derivatives-of-fatty-acid-esters
#19
Anis Ahmad, Aiman Ahmad, Raja Sudhakar, Himani Varshney, Naidu Subbarao, Saba Ansari, Abdul Rauf, Asad U Khan
In this study, a novel series of oxazoline and thiazoline were designed as inhibitors of cytochrome P450 14 alpha-sterol demethylase (CYP51) from Candida albicans and peptide deformylase of Escherichia coli. The long chain dibromo derivative of fatty acid esters on reaction with urea and thiourea gave their corresponding oxazolines and thiazolines respectively. All the compounds were characterized by their spectral data (IR, (1)H NMR, (13)C NMR and MS) and tested for antibacterial and antifungal activity by disk diffusion assay and minimum inhibitory concentration (MIC) by the broth microdilution method against Gram-positive and Gram-negative strains of bacteria as well as fungus strains...
November 1, 2016: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/27796180/evaluation-of-a-new-automated-microscopy-urine-sediment-analyser-sedimax-contrust%C3%A2
#20
Laura Bogaert, Bart Peeters, Jaak Billen
This study evaluated the performance of the stand-alone sediMAX conTRUST (77Elektronika, Budapest, Hungary) analyser as an alternative to microscopic analysis of urine. The validation included a precision, carry-over, categorical correlation and diagnostic performance study with manual phase-contrast microscopy as reference method. A total of 260 routine urine samples were assessed. The within-run precision was much better at higher concentrations than at very low concentrations. The precision met our predefined limits for all the elements at the different concentrations, with the exception of the lowest RBC, the WBC, pathological casts and crystals count...
October 31, 2016: Acta Clinica Belgica
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