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https://www.readbyqxmd.com/read/29244777/sparse-adaptive-iteratively-weighted-thresholding-algorithm-saita-for-lp-regularization-using-the-multiple-sub-dictionary-representation
#1
Yunyi Li, Jie Zhang, Shangang Fan, Jie Yang, Jian Xiong, Xiefeng Cheng, Hikmet Sari, Fumiyuki Adachi, Guan Gui
Both L1/2 and L2/3 are two typical non-convex regularizations of Lp (0<p<1), which can be employed to obtain a sparser solution than the L₁ regularization. Recently, the multiple-state sparse transformation strategy has been developed to exploit the sparsity in L₁ regularization for sparse signal recovery, which combines the iterative reweighted algorithms. To further exploit the sparse structure of signal and image, this paper adopts multiple dictionary sparse transform strategies for the two typical cases p∈{1/2, 2/3} based on an iterative Lp thresholding algorithm and then proposes a sparse adaptive iterative-weighted Lp thresholding algorithm (SAITA)...
December 15, 2017: Sensors
https://www.readbyqxmd.com/read/29241386/modified-risk-associations-of-lipoproteins-and-apolipoproteins-by-chronic-low-grade-inflammation
#2
Altan Onat, Aysem Kaya, Evin Ademoglu
Lipoproteins and the apolipoproteins (apo) that they carry are major determinants of cardiovascular diseases (CVD) as well as metabolic, renal and inflammatory chronic disorders either directly or through mediation of risk factors. The notion that elevated low-density lipoprotein cholesterol (LDL-C) and apoB levels are related to the acquisition of CVD and, high-density lipoprotein cholesterol (HDL-C) and apoA-I indicate protection against CVD has been challenged in the past decade. Advanced age, adiposity, ethnicity or impaired glucose intolerance rendered autoimmune activation in an environment of pro-inflammatory state/oxidative stress and may disrupt the linear risk association between lipoproteins...
December 15, 2017: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/29240752/effect-of-early-dietary-energy-restriction-and-phosphorus-level-on-subsequent-growth-performance-intestinal-phosphate-transport-and-ampk-activity-in-young-broilers
#3
Zhiqiang Miao, Guixian Zhang, Junzhen Zhang, Jianhui Li, Yu Yang
We aimed to determine the effect of low dietary energy on intestinal phosphate transport and the possible underlying mechanism to explain the long-term effects of early dietary energy restriction and non-phytate phosphorus (NPP). A 2 × 3 factorial experiment, consisting of 2 energy levels and 3 NPP levels, was conducted. Broiler growth performance, intestinal morphology in 0-21 days and 22-35 days, type IIb sodium-phosphate co-transporter (NaPi-IIb) mRNA expression, adenylate purine concentrations in the duodenum, and phosphorylated adenosine monophosphate-activated protein kinase (AMPK-α) activity in 0-21 days were determined...
2017: PloS One
https://www.readbyqxmd.com/read/29240557/impact-of-motion-compensation-and-partial-volume-correction-for-18f-naf-pet-ct-imaging-of-coronary-plaque
#4
J Cal-González, C Tsoumpas, M L Lassen, S Rasul, L Koller, M Hacker, K Schäfers, T Beyer
Recent studies have suggested that 18F-NaF-PET enables visualization and quantification of plaque micro-calcification in the coronary tree. However, PET imaging of plaque calcification in the coronary arteries is challenging because of the respiratory and cardiac motion as well as partial volume effects. The objective of this work is to implement an image reconstruction framework, which incorporates compensation for respiratory as well as cardiac motion (MoCo) and partial volume correction (PVC), for cardiac 18F-NaF PET imaging in PET/CT...
December 14, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29240174/all-fiber-second-order-optical-vortex-generation-based-on-strong-modulated-long-period-grating-in-a-four-mode-fiber
#5
Hang Wu, Shecheng Gao, Bingsen Huang, Yuanhua Feng, Xincheng Huang, Weiping Liu, Zhaohui Li
We propose an effective all-fiber method to generate a high-order optical vortex (OV) via twisting a strong modulated long-period fiber grating (LPFG) written in a four-mode fiber (4MF). With a special design and optimization of the procedures of CO2-laser irradiation, an LPFG with strong period deformation is achieved in the 4MF. Based on this LPFG, we can directly convert the linear polarization (LP) fiber fundamental mode (LP01) to the high-order LP core mode (LP21) with efficiency of 99.7% and then transform the LP21 mode into a high-order OV mode (±2 order)...
December 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/29229232/dyslipidemia-in-children-with-arterial-ischemic-stroke-prevalence-and-risk-factors
#6
Sally Sultan, Michael Dowling, Adam Kirton, Gabrielle DeVeber, Alexandra Linds, Mitchell S V Elkind
BACKGROUND: Risk factors for pediatric stroke are poorly understood and require study to improve prevention. Total cholesterol and triglyceride values peak to near-adult levels before puberty, a period of increased stroke incidence. The role of lipids in childhood arterial ischemic stroke has been minimally investigated. METHODS: We performed a cross-sectional analysis of lipid and Lp(a) concentrations in children with arterial ischemic stroke in the International Pediatric Stroke Study to compare the prevalence of dyslipidemia and high- or low-ranking lipid values in our dataset with reported population values...
October 10, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/29228915/qualitative-and-quantitative-evaluation-of-acute-angle-closure-mechanisms
#7
Yanin Suwan, Sunpong Jiamsawad, Apichat Tantraworasin, Lawrence Geyman, Wasu Supakontanasan, Chaiwat Teekhasaenee
BACKGROUND: To evaluate ocular biometric parameters in different subtypes of acute angle closure and compared to fellow eyes of AAC and PACS eyes. METHODS: This is a retrospective chart review study. A total of 167 eyes (96 patients) consisting of 71 AAC eyes, 71 fellow eyes of AAC, and 25 PACS eyes were recruited. All patients underwent ocular examination and biometry. The mechanism of AAC was confirmed by ultrasound biomicroscopy. We then subdivided AAC eyes into four subgroups: crowded-angle (CR), lens subluxation (LS) pupillary block (PB), and plateau iris syndrome (PL)...
December 11, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/29228739/regulatory-role-of-nkg2d-nk-cells-in-intestinal-lamina-propria-by-secreting-double-edged-th1-cytokines-in-ulcerative-colitis
#8
Fan Wang, Pai-Lan Peng, Xue Lin, Ying Chang, Jing Liu, Rui Zhou, Jia-Yan Nie, Wei-Guo Dong, Qiu Zhao, Jin Li
The role of intestinal lamina propria (LP) NKG2D+ NK cells is unclear in regulating Th1/Th2 balance in ulcerative colitis (UC). In this study, we investigated the frequency of LP NKG2D+ NK cells in DSS-induced colitis model and intestinal mucosal samples of UC patients, as well as the secretion of Th1/Th2/Th17 cytokines in NK cell lines after MICA stimulation. The role of Th1 cytokines in UC was validated by bioinformatics analysis. We found that DSS-induced colitis in mice was characterized by a Th2-mediated process...
November 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29228186/aether-leveraging-linear-programming-for-optimal-cloud-computing-in-genomics
#9
Jacob M Luber, Braden T Tierney, Evan M Cofer, Chirag J Patel, Aleksandar D Kostic
Motivation: Across biology we are seeing rapid developments in scale of data production without a corresponding increase in data analysis capabilities. Results: Here, we present Aether (http://aether.kosticlab.org), an intuitive, easy-to-use, cost-effective, and scalable framework that uses linear programming (LP) to optimally bid on and deploy combinations of underutilized cloud computing resources. Our approach simultaneously minimizes the cost of data analysis and provides an easy transition from users' existing HPC pipelines...
December 8, 2017: Bioinformatics
https://www.readbyqxmd.com/read/29227508/laboratory-evaluation-of-the-influence-of-decentration-and-pupil-size-on-the-optical-performance-of-a-monofocal-bifocal-and-trifocal-intraocular-lens
#10
Tamer Tandogan, Hyeck Soo Son, Chul Young Choi, Michael C Knorz, Gerd U Auffarth, Ramin Khoramnia
PURPOSE: To assess the influence of decentration and aperture size on the optical quality of different intraocular lenses (IOLs) of the same material, body design, and refractive power using standardized optical bench testing. METHODS: Using an optical bench set-up, an aspheric monofocal (CT ASPHINA 409M; Carl Zeiss Meditec, Jena, Germany), an aspheric diffractive bifocal (AT LISA 809M; Carl Zeiss Meditec), and an aspheric diffractive trifocal (AT LISA 839M; Carl Zeiss Meditec) intraocular lens (IOL) were evaluated, each with the same distance power, body design, and material...
December 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29226050/determinants-of-computed-tomography-head-scan-ordering-for-patients-with-low-risk-headache-in-the-emergency-department
#11
Meaghan J Mackenzie, Rashi Hiranandani, Dongmei Wang, Tak Fung, Eddy Lang
Background Many specialty societies have found that neuroimaging in headache is a low-value intervention for benign presentations. This study describes factors that influence Emergency Room (ER) physicians' adherence to Choosing Wisely (CW) recommendations for low-risk headache patients presenting to Calgary's Emergency Departments (EDs). Emergency medicine has yet to address imaging in headache as a CW topic; however, this study may inform that decision. Methods Data were retrospectively collected for all patients presenting to Calgary EDs with headaches from April 1, 2014 to March 31, 2016...
October 9, 2017: Curēus
https://www.readbyqxmd.com/read/29224805/prognostic-value-of-masticatory-muscle-involvement-in-nasopharyngeal-carcinoma-patients-treated-with-intensity-modulated-radiation-therapy
#12
Min Kang, Pingting Zhou, Xueyin Liao, Meng Xu, Rensheng Wang
BACKGROUND AND PURPOSE: In 2017, the 8th edition of the nasopharyngeal carcinoma (NPC) staging manual published by the Union for International Cancer Control/American Joint Committee on Cancer (UICC/AJCC) defined new rules regarding the involvement of anatomical masticatory muscles (MM). The purpose of this study is to evaluate the validity of the current T-staging system after the addition of revisions regarding MM involvement. METHODS: We performed a retrospective review of 608 patients, who were newly diagnosed with NPC and treated with intensity-modulated radiotherapy (IMRT) between January 2008 and March 2010...
December 2017: Oral Oncology
https://www.readbyqxmd.com/read/29224585/long-term-implications-of-feed-energy-source-in-different-genetic-types-of-reproductive-rabbit-females-i-resource-acquisition-and-allocation
#13
A Arnau-Bonachera, C Cervera, E Blas, T Larsen, E Martínez-Paredes, L Ródenas, J J Pascual
To achieve functional but also productive females, we hypothesised that it is possible to modulate acquisition and allocation of animals from different genetic types by varying the main energy source of the diet. To test this hypothesis, we used 203 rabbit females belonging to three genetic types: H (n=66), a maternal line characterised by hyper-prolificacy; LP (n=67), a maternal line characterised by functional hyper-longevity; R (n=79), a paternal line characterised by growth rate. Females were fed with two isoenergetic and isoprotein diets differing in energy source: animal fat (AF) enhancing milk yield; cereal starch (CS) promoting body reserves recovery...
December 11, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29224584/long-term-implications-of-feed-energy-source-in-different-genetic-types-of-reproductive-rabbit-females-iii-fitness-and-productivity
#14
A Arnau-Bonachera, D Savietto, J J Pascual
The specialization process associated with genetic selection could be associated with functional disorders, affecting the reproductive success of females (fitness). We hypothesized that by modulating energy acquisition and allocation of females we could balance productivity and reproductive success. To test this hypothesis, we used 203 rabbit females belonging to three genetic types: H (n=66) maternal line specialized in prolificacy, LP (n=67) generalist maternal line, R (n=70) paternal line specialized in growth rate...
December 11, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29224577/long-term-implications-of-feed-energy-source-in-different-genetic-types-of-reproductive-rabbit-females-ii-immunologic-status
#15
M Penadés, A Arnau-Bonachera, A García-Quirós, D Viana, L Selva, J M Corpa, J J Pascual
Genetic selection and nutrition management have played a central role in the development of commercial rabbitry industry over the last few decades, being able to affect productive and immunological traits of the animals. However, the implication of different energy sources in animals from diverse genetic lines achieving such evolutionary success remains still unknown. Therefore, in this work, 203 female rabbits housed and bred in the same conditions were used from their first artificial insemination until their fifth weaning...
December 11, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29223817/elevated-inflammatory-lp-pla2-and-il-6-link-e-waste-pb-toxicity-to-cardiovascular-risk-factors-in-preschool-children
#16
Xueling Lu, Xijin Xu, Yu Zhang, Yuling Zhang, Chenyang Wang, Xia Huo
Cardiovascular toxicity of lead (Pb) manifests primarily as an effect on blood pressure and eventual increased risk of atherosclerosis and cardiovascular events. Therefore, we investigated vascular inflammatory biomarkers and cardiovascular effects of Pb-exposed children. A total of 590 children (3-7 years old) were recruited from Guiyu (n = 337), an electronic waste (e-waste)-exposed group, and Haojiang (n = 253), a reference group, from November to December 2016. We measured child blood Pb levels (BPbs), and systolic and diastolic blood pressure...
December 7, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29223178/relative-influence-of-dietary-protein-and-energy-contents-on-lysine-requirements-and-voluntary-feed-intake-of-rainbow-trout-fry
#17
Mélusine Van Larebeke, Guillaume Dockx, Yvan Larondelle, Xavier Rollin
The effect of dietary digestible protein (DP) and/or digestible energy (DE) levels on lysine (Lys) requirements, Lys utilisation efficiency and voluntary feed intake (VFI) were studied in rainbow trout fry when Lys was the first limiting indispensable amino acid or in excess in the diet. Two trials were conducted at 11·6°C with eighty-one experimental diets, containing 280 g DP/kg DM (low protein (LP), trial 1), 600 g DP/kg DM (high protein (HP), trial 1) or 440 g DP/kg DM (medium protein (MP), trial 2), 17 MJ DE/kg (low energy (LE)), 19·5 MJ DE/kg (medium energy (ME)) or 22 MJ DE/kg (high energy (HE)), and nine Lys levels from deeply deficient to large excess (2·3-36 g/kg DM)...
December 10, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/29222858/obesity-lipid-profiles-and-oxidative-stress-in-children-after-liver-transplantation
#18
Piotr Czubkowski, Aldona Wierzbicka, Joanna Pawłowska, Irena Jankowska, Piotr Socha
PURPOSE: In adult liver transplant recipients, coronary artery disease and congestive heart failure are significant cause of morbidity and mortality. This may be attributed to the long-term immunosuppressive treatment, mostly with calcineurin inhibitors and steroids, which in long-term may be associated with hyperlipidemia, oxidative stress and cardiovascular complications. Since such data for children is sparse, the aim of this study was to assess the lipid and oxidative stress markers after pediatric liver transplantation (LTx)...
December 10, 2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/29220775/sio2-nanomaterial-as-a-tool-to-improve-hordeum-vulgare-l-tolerance-to-nano-nio-stress
#19
Cristiano Soares, Simão Branco-Neves, Alexandra de Sousa, Manuel Azenha, Ana Cunha, Ruth Pereira, Fernanda Fidalgo
This work was designed to assess the potential role of silicon dioxide nanomaterial (nano-SiO2) in enhancing barley's tolerance to nickel oxide nanomaterial (nano-NiO). For this purpose, plants were grown for 14days under nano-NiO (120mgkg-1) single and co-exposure with nano-SiO2 (3mgkg-1). The exposure of barley to nano-NiO caused a significant decrease in growth-related parameters and induced a negative response on the photosynthetic apparatus. However, upon nano-SiO2 co-exposure, the inhibitory effects of nano-NiO were partially reduced, with lower reductions in fresh and dry biomass, and with the recovery of the photosynthesis-related parameters...
December 5, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29220639/early-lumbar-puncture-and-risk-of-intraventricular-hemorrhage-in-very-low-birth-weight-infants
#20
Daniela Testoni, Christoph P Hornik, Ruth Guinsburg, Reese H Clark, Rachel G Greenberg, Daniel K Benjamin, P Brian Smith
BACKGROUND: Lumbar puncture (LP) is the gold standard for diagnosing meningitis; however it is unknown whether early LP (≤3days of life) is associated with increased risk of intraventricular hemorrhage (IVH) in very low birth weight (VLBW) infants. OBJECTIVE: To determine whether early LP in VLBW infants is associated with severe IVH. METHODS: VLBW infants from a cohort of 1,158,789 infants discharged from 382 neonatal intensive care units (1997-2015) were enrolled...
December 5, 2017: Early Human Development
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