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https://www.readbyqxmd.com/read/28719651/link-prediction-on-twitter
#1
Sanda Martinčić-Ipšić, Edvin Močibob, Matjaž Perc
With over 300 million active users, Twitter is among the largest online news and social networking services in existence today. Open access to information on Twitter makes it a valuable source of data for research on social interactions, sentiment analysis, content diffusion, link prediction, and the dynamics behind human collective behaviour in general. Here we use Twitter data to construct co-occurrence language networks based on hashtags and based on all the words in tweets, and we use these networks to study link prediction by means of different methods and evaluation metrics...
2017: PloS One
https://www.readbyqxmd.com/read/28719319/phosphoproteome-of-toxoplasma-gondii-infected-host-cells-reveals-specific-cellular-processes-predominating-in-different-phases-of-infection
#2
Cheng He, Ai-Yuan Chen, Hai-Xia Wei, Xiao-Shuang Feng, Hong-Juan Peng
The invasion of Toxoplasma gondii tachyzoites into the host cell results in extensive host cell signaling activation/deactivation that is usually regulated by the phosphorylation/dephosphorylation. To elucidate how T. gondii regulates host cell signal transduction, the comparative phosphoproteome of stable isotope labeling with amino acids in cell culture-labeled human foreskin fibroblast cells was analyzed. The cells were grouped (Light [L], Medium [M], and Heavy [H] groups) based on the labeling isotope weight and were infected with T...
July 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719187/exploring-the-role-of-habitat-on-the-wettability-of-cicada-wings
#3
Junho Oh, Catherine Dana, Sungmin Hong, Jessica K Roman, Kyoo D Jo, Je W Hong, Jonah Nguyen, Donald M Cropek, Marianne Alleyne, Nenad Miljkovic
Evolutionary pressure has pushed the wings of many insect species to develop micro/nanostructures that can significantly affect wettability and enable functionalities such as droplet jumping, self-cleaning, anti-fogging, anti-microbial, and anti-reflectivity. Significant effort is underway to understand the wing surface structure to establish rational design tools for the development of novel engineered materials. Most studies, however, have focused on superhydrophobic wings obtained from a single insect species, in particular, the Psaltoda claripennis cicada...
July 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28718315/ulnar-styloid-base-fractures-cause-distal-radioulnar-joint-instability-in-a-cadaveric-model
#4
Tyler S Pidgeon, Joseph J Crisco, Gregory R Waryasz, Douglas C Moore, Manuel F DaSilva
BACKGROUND: The deep portion of the distal radioulnar ligaments (DRUL) inserts on the ulnar fovea and is the most important stabilizer of the distal radioulnar joint (DRUJ). Ulnar styloid base fractures that include the ulnar fovea may cause DRUJ instability. METHODS: DRUJ stability in pronosupination was evaluated in 12 fresh-frozen upper extremities (4 female) aged 52 to 68 years (mean: 58.8 years) using a custom fixture, which allowed free rotation of the radius around the fixed ulna...
January 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28718225/proteostasis-and-ageing-insights-from-long-lived-mutant-mice
#5
William A Sands, Melissa M Page, Colin Selman
The global increase in life expectancy is creating significant medical, social and economic challenges to current and future generations. Consequently, there is a need to identify the fundamental mechanisms underlying the ageing process. This knowledge should help develop realistic interventions capable of combatting age-related disease, and thus improving late-life health and vitality. While several mechanisms have been proposed as conserved lifespan determinants, the loss of proteostasis- where proteostasis is defined here as the maintenance of the proteome- appears highly relevant to both ageing and disease...
July 17, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28718080/a-comparison-of-live-birth-rates-and-perinatal-outcomes-between-cryopreserved-oocytes-and-cryopreserved-embryos
#6
Jacqueline R Ho, Irene Woo, Kristin Louie, Wael Salem, Sami I Jabara, Kristin A Bendikson, Richard J Paulson, Karine Chung
PURPOSE: Prior studies suggest that pregnancy outcomes after autologous oocyte cryopreservation are similar to fresh in vitro fertilization (IVF) cycles. It is unknown whether there are differences in pregnancy and perinatal outcomes between cryopreserved oocytes and cryopreserved embryos. METHODS: This is a retrospective cohort study comparing pregnancy and perinatal outcomes between oocyte and embryo cryopreservation at a university-based fertility center. We included 42 patients and 68 embryo transfers in patients who underwent embryo transfer after elective oocyte preservation (frozen oocyte-derived embryo transfer (FOET)) from 2005 to 2015...
July 17, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28717985/basic-echocardiography-for-undergraduate-students-a-comparison-of-different-peer-teaching-approaches
#7
G Gradl-Dietsch, A K Menon, A Gürsel, A Götzenich, N Hatam, A Aljalloud, S Schrading, F Hölzl, M Knobe
BACKGROUND: The aim of this study was to assess the impact of different teaching interventions in a peer-teaching environment on basic echocardiography skills and to examine the influence of gender on learning outcomes. METHODS: We randomly assigned 79 s year medical students (55 women, 24 men) to one of four groups: peer teaching (PT), peer teaching using Peyton's four-step approach (PPT), team based learning (TBL) and video-based learning (VBL). All groups received theoretical and practical hands-on training according to the different approaches...
July 17, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28717963/the-role-of-multislice-computed-tomography-of-the-costal-cartilage-in-adult-age-estimation
#8
Kui Zhang, Fei Fan, Meng Tu, Jing-Hui Cui, Jing-Song Li, Zhao Peng, Zhen-Hua Deng
To establish population-specific age estimation models in adults from costal cartilage for contemporary Chinese by using three-dimensional volume-rendering technique. Five hundred and twelve individuals (254 females and 258 males) with documented ages between 20 and 85 years were retrospectively included. Their clinical CT examinations (1 mm slice thickness) were used to develop the sex-specific age prediction model. A validation sample comprising 26 female and 24 male individuals was then used to test the predictive accuracy of the established models...
July 17, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28717890/application-of-phototherapy-for-the-healing-of-the-navels-of-neonatal-dairy-calves
#9
Ana Lúcia Borges de Souza Faria, Luis Augusto Lupato Conrado, Luiz Sergio Vanzela, Antonio Balbin Villaverde, Egberto Munin
The present work evaluated the effects of LED light irradiation on the healing of the navels of neonatal dairy calves. Fifty-seven neonatal calves were divided into two groups. Animals had their umbilical stumps immersed in 10% iodine tincture for 60 s, and this process was repeated every 24 h for three consecutive days. The 29 animals in the first group did not receive LED therapy. The 28 animals in the second group received LED light irradiation at 640 nm with 300 mW power, 46.8 J/cm(2) energy density, 60 s irradiation time, and 0...
July 17, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28717427/comparison-of-the-effects-of-low-dose-interferon-and-high-dose-interferon-on-reduction-of-the-number-and-size-of-plaques-in-patients-with-multiple-sclerosis-a-historical-cohort
#10
Payam Khomand, Ghobad Moradi, Behrooz Ahsan, Setareh Abtahi
Background: This study was performed to compare the effects of low dose interferon beta-1 (IFN-β-1) (CinnoVex, 30 mcg) and high dose IFN-β-1 (REBIF, 44 mcg) on the reduction of the number and size of plaques in magnetic resonance imaging (MRI) in patients with multiple sclerosis (MS). Methods: This historical cohort study, which was performed in 2014 in Sanandaj (western part of Iran). 43 MS patients in two groups were investigated. The first group, which included 19 patients, was treated using high dose IFN (44 mcg) and the second group, which was consisted of 24 patients, was treated using low dose IFN (30 mcg)...
January 5, 2017: Iranian Journal of Neurology
https://www.readbyqxmd.com/read/28717238/molecular-mechanism-of-pd-1-pd-l1-blockade-via-anti-pd-l1-antibodies-atezolizumab-and-durvalumab
#11
Hyun Tae Lee, Ju Yeon Lee, Heejin Lim, Sang Hyung Lee, Yu Jeong Moon, Hyo Jeong Pyo, Seong Eon Ryu, Woori Shin, Yong-Seok Heo
In 2016 and 2017, monoclonal antibodies targeting PD-L1, including atezolizumab, durvalumab, and avelumab, were approved by the FDA for the treatment of multiple advanced cancers. And many other anti-PD-L1 antibodies are under clinical trials. Recently, the crystal structures of PD-L1 in complex with BMS-936559 and avelumab have been determined, revealing details of the antigen-antibody interactions. However, it is still unknown how atezolizumab and durvalumab specifically recognize PD-L1, although this is important for investigating novel binding sites on PD-L1 targeted by other therapeutic antibodies for the design and improvement of anti-PD-L1 agents...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28716716/fiber-tractography-using-machine-learning
#12
Peter F Neher, Marc-Alexandre Côté, Jean-Christophe Houde, Maxime Descoteaux, Klaus H Maier-Hein
We present a fiber tractography approach based on a random forest classification and voting process, guiding each step of the streamline progression by directly processing raw diffusion-weighted signal intensities. For comparison to the state-of-the-art, i.e. tractography pipelines that rely on mathematical modeling, we performed a quantitative and qualitative evaluation with multiple phantom and in vivo experiments, including a comparison to the 96 submissions of the ISMRM tractography challenge 2015. The results demonstrate the vast potential of machine learning for fiber tractography...
July 14, 2017: NeuroImage
https://www.readbyqxmd.com/read/28716686/sedative-and-cardiovascular-effects-of-intranasal-or-intramuscular-dexmedetomidine-in-healthy-dogs
#13
Fabiana Micieli, Bruna Santangelo, Fabiana Reynaud, Alessandro Mirra, Giusy Napoleone, Giovanni Della Valle, Karine G Portier, Giancarlo Vesce
OBJECTIVE: To compare the clinical effects and sedation scores following either intranasal (IN) or intramuscular (IM) administration of dexmedetomidine in dogs. STUDY DESIGN: Prospective, blinded, randomized, clinical study. ANIMALS: A total of 20 client-owned dogs scheduled for noninvasive diagnostic procedures. METHODS: Dogs were allocated to be administered dexmedetomidine 0.02 mg kg(-1) IN (IN group) or IM (IM group)...
April 5, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28716683/trimmed-autocalibrating-k-space-estimation-based-on-structured-matrix-completion
#14
Mark Bydder, Stanislas Rapacchi, Olivier Girard, Maxime Guye, Jean-Philippe Ranjeva
PURPOSE: Parallel imaging allows the reconstruction of undersampled data from multiple coils. This provides a means to reject and regenerate corrupt data (e.g. from motion artefact). The purpose of this work is to approach this problem using the SAKE parallel imaging method. THEORY AND METHODS: Parallel imaging methods typically require calibration by fully sampling the center of k-space. This is a challenge in the presence of corrupted data, since the calibration data may be corrupted which leads to an errors-in-variables problem that cannot be solved by least squares or even iteratively reweighted least squares...
July 14, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28716628/transduction-of-a-neospora-caninum-antigen-gene-into-mammalian-cells-using-a-modified-bombyx-mori-nucleopolyhedrovirus-for-antibody-production
#15
Tatsuya Kato, Kohei Itagaki, Mai Yoshimoto, Rikito Hiramatsu, Hamizah Suhaimi, Tetsuya Kohsaka, Enoch Y Park
Autographa californica multiple nucleopolyhedrovirus (AcMNPV) can easily enter and transduce foreign genes into mammalian cells, but these functions are difficult for Bombyx mori nucleopolyhedrovirus (BmNPV). In this study, we investigated the induction of antibody production in mice immunized with an engineered BmNPV. The GP64 of BmNPV (BmGP64) was replaced with the GP64 of AcMNPV (AcGP64); this construct, designated BmNPVΔbgp/AcGP64, displays AcGP64 on the surface of BmNPV. The Neospora caninum antigen (NcSRS2) expression cassette, consisting of the cytomegalovirus immediate-early promoter and NcSRS2 from N...
July 14, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28716567/moving-the-goalposts-a-comparison-of-different-definitions-for-primary-external-ventricular-drain-infection-and-its-risk-factors-a-multi-center-study-of-2575-patients
#16
Peter Y M Woo, Hoi-Tung Wong, Jenny K S Pu, Wai-Kei Wong, Larry Y W Wong, Michael W Y Lee, Kwong-Yui Yam, Wai-Man Lui, Wai-Sang Poon
External ventricular drainage is the most common procedure performed in daily neurosurgical practice. One devastating complication is ventriculostomy-associated infection, but the establishment of evidence-based management guidelines has been hindered by the lack of an universal definition. There is also limited data with regard to the utility of comorbidity health indices and surgery-related factors in predicting infection. This study aims to compare the incidence of infection according to five commonly used definitions and to identify risk factors for this complication...
July 14, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28716520/modeling-color-preference-using-color-space-metrics
#17
Karen B Schloss, Laurent Lessard, Chris Racey, Anya C Hurlbert
Studying color preferences provides a means to discover how perceptual experiences map onto cognitive and affective judgments. A challenge is finding a parsimonious way to describe and predict patterns of color preferences, which are complex with rich individual differences. One approach has been to model color preferences using factors from metric color spaces to establish direct correspondences between dimensions of color and preference. Prior work established that substantial, but not all, variance in color preferences could be captured by weights on color space dimensions using multiple linear regression...
July 14, 2017: Vision Research
https://www.readbyqxmd.com/read/28716417/alcohol-dehydrogenase-1-adh1-confers-both-abiotic-and-biotic-stress-resistance-in-arabidopsis
#18
Haitao Shi, Wen Liu, Yue Yao, Yunxie Wei, Zhulong Chan
Although the transcriptional regulation and upstream transcription factors of AtADH1 in response to abiotic stress are widely revealed, the in vivo roles of AtADH1 remain unknown. In this study, we found that the expression of AtADH1 was largely induced after salt, drought, cold and pathogen infection. Further studies found that AtADH1 overexpressing plants were more sensitive to abscisic acid (ABA) in comparison to wide type (WT), while AtADH1 knockout mutants showed no significant difference compared with WT in ABA sensitivity...
September 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28716207/influence-of-true-within-herd-prevalence-of-small-ruminant-lentivirus-infection-in-goats-on-agreement-between-serological-immunoenzymatic-tests
#19
Michał Czopowicz, Olga Szaluś-Jordanow, Marcin Mickiewicz, Agata Moroz, Lucjan Witkowski, Iwona Markowska-Daniel, Emilia Bagnicka, Jarosław Kaba
The study was conducted to evaluate influence of the true within-herd prevalence of small ruminant lentivirus (SRLV) infection on agreement beyond chance between three different types of commercial serological ELISAs. Blood samples were collected from 865 goats from 12 dairy goat herds. Serum samples were tested using three commercial ELISA kits: whole-virus indirect ELISA (wELISA), indirect ELISA based on recombined TM and CA antigens (TM/CA-ELISA), and competitive-inhibition ELISA based on SU antigen (SU-ELISA)...
September 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28716078/cognate-comparative-gene-annotation-characterizer
#20
Jeanne Wilbrandt, Bernhard Misof, Oliver Niehuis
BACKGROUND: The comparison of gene and genome structures across species has the potential to reveal major trends of genome evolution. However, such a comparative approach is currently hampered by a lack of standardization (e.g., Elliott TA, Gregory TR, Philos Trans Royal Soc B: Biol Sci 370:20140331, 2015). For example, testing the hypothesis that the total amount of coding sequences is a reliable measure of potential proteome diversity (Wang M, Kurland CG, Caetano-Anollés G, PNAS 108:11954, 2011) requires the application of standardized definitions of coding sequence and genes to create both comparable and comprehensive data sets and corresponding summary statistics...
July 17, 2017: BMC Genomics
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