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https://www.readbyqxmd.com/read/28535484/biomonitoring-of-genotoxicity-of-industrial-fertilizer-pollutants-in-aiolopus-thalassinus-orthoptera-acrididae-using-alkaline-comet-assay
#1
Eman A Abdelfattah, Maria Augustyniak, Hesham A Yousef
Phosphate fertilizer industry is considered as one of the main sources of environmental pollutants. Besides solid waste products, e.g. phosphates, sulphates, and heavy metals, also atmospheric pollutants, such as hydrofluoric acid fumes (HF), sulphur dioxide (SO2), nitrogen oxides (NO2), and particulate matter with diameter up to 10 μm (PM10) can be dangerous. Genotoxic effect of these pollutants was monitored by assessing the DNA damage using alkaline comet assay on cells from brain, thoracic muscles and gut of Aiolopus thalassinus collected at three sites (A-C) located at 1, 3, and 6 km away from Abu-Zaabal Company for Fertilizers and Chemical Industries...
May 16, 2017: Chemosphere
https://www.readbyqxmd.com/read/28535416/the-role-of-timing-in-the-treatment-of-spinal-cord-injury
#2
REVIEW
Amene Saghazadeh, Nima Rezaei
Regeneration failure after primary spinal cord injury (SCI) leads to diverse clinical complications in a severity- and level of SCI-dependent manner. The cost of treating both of them (initial regeneration failure and following complications) would be prohibitive, particularly in less developed nations. The well-recognized circumstances arose from primary SCI include excitotoxicity and inflammation. SCI increases concentrations of extracellular amino acids (EAAs) in the severity-dependent manner and the maximum level of EAAs at the injury site will be reduced by distance from the injury site...
May 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28535162/examining-the-social-context-of-injection-drug-use-social-proximity-vs-geographic-proximity-to-others-who-inject-drugs
#3
Abby E Rudolph, April M Young, Jennifer R Havens
This analysis uses social network and spatial data to examine associations between one's injection status and social and/or spatial proximity to others who inject. 503 rural persons who use drugs were recruited to participate in the Social Networks among Appalachian People (SNAP) Study (2008-2010). Interviewer-administered surveys collected information on recent sex, drug use, and social support network members (n = 897 ties). Using network simulations, we determined a threshold for the association between social proximity to others who inject and recent injection status ('socially proximal' defined by shortest path≤2)...
May 23, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28534912/prediction-on-the-light-assisted-exfoliation-of-multilayered-arsenene-by-the-photo-isomerization-of-azobenzene
#4
Jun Zhao, Chunyan Liu, Wanlin Guo, Jing Ma
The exfoliation of gray arsenic into single- or few-layered arsenene is a challenge of utmost importance. We propose here that the conformational change in the photo-isomerization of azobenzene-based photochromes might be used to promote the exfoliation of multilayered arsenene. Our density functional theory calculations show that the trans-to-cis conformational change can lead to an increase of the adjacent interlayer distance of arsenene from 6.59 Å to 11.07 Å. Starting from the transition state, the azobenzene molecule can be isomerized into the more stable trans form based on further ab initio molecular dynamics simulations...
May 23, 2017: Nanoscale
https://www.readbyqxmd.com/read/28534871/development-of-a-gridded-meteorological-dataset-over-java-island-indonesia-1985-2014
#5
Yanto, Ben Livneh, Balaji Rajagopalan
We describe a gridded daily meteorology dataset consisting of precipitation, minimum and maximum temperature over Java Island, Indonesia at 0.125°×0.125° (~14 km) resolution spanning 30 years from 1985-2014. Importantly, this data set represents a marked improvement from existing gridded data sets over Java with higher spatial resolution, derived exclusively from ground-based observations unlike existing satellite or reanalysis-based products. Gap-infilling and gridding were performed via the Inverse Distance Weighting (IDW) interpolation method (radius, r, of 25 km and power of influence, α, of 3 as optimal parameters) restricted to only those stations including at least 3,650 days (~10 years) of valid data...
May 23, 2017: Scientific Data
https://www.readbyqxmd.com/read/28534793/an-information-theoretic-cluster-visualization-for-self-organizing-maps
#6
Leonardo Enzo Brito da Silva, Donald C Wunsch
Improved data visualization will be a significant tool to enhance cluster analysis. In this paper, an information-theoretic-based method for cluster visualization using self-organizing maps (SOMs) is presented. The information-theoretic visualization (IT-vis) has the same structure as the unified distance matrix, but instead of depicting Euclidean distances between adjacent neurons, it displays the similarity between the distributions associated with adjacent neurons. Each SOM neuron has an associated subset of the data set whose cardinality controls the granularity of the IT-vis and with which the first- and second-order statistics are computed and used to estimate their probability density functions...
May 17, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28534777/on-the-performance-and-implementation-of-parallax-free-video-see-through-displays
#7
Ricardo Augusto Borsoi, Guilherme Holsbach Costa
In see-through systems an observer watches a (background) scene partially occluded by a display. In this display, usually positioned close to the observer, a region of the background scene is shown, yielding the sensation that the display is transparent. To achieve the transparency effect, it is very important to compensate the parallax error and other distortions caused by the image acquisition system. In this paper a detailed study of a video see-through methodology with parallax correction is performed. In a system composed by two cameras - one directed to the user and another to the background scene - and a display, the relative position between the user, the display and the scene is estimated using a feature detection algorithm and the parallax error is compensated assuming a planar scene model...
May 17, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28534772/discriminative-transformation-for-multi-dimensional-temporal-sequences
#8
Bing Su, Xiaoqing Ding, Changsong Liu, Hao Wang, Ying Wu
Feature space transformation (FST) techniques have been widely studied for dimensionality reduction in vector-based feature space. However, these techniques are inapplicable to sequence data because the features in the same sequence are not independent. In this paper, we propose a method called max-min inter-sequence distance analysis (MMSDA) to transform features in sequences into a low-dimensional subspace such that different sequence classes are holistically separated. To utilize the temporal dependencies, MMSDA first aligns features in sequences from the same class to an adapted number of temporal states and then constructs the sequence class separability based on the statistics of these ordered states...
May 16, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28534715/knowledge-attitudes-and-behaviors-related-to-child-safety-restraint-in-citizens-of-shenzhen-municipality-china-and-the-associations-between-these-factors
#9
Shengyuan Liu, Haibin Zhou, Jianping Ma, Changyi Wang, Zhongwei Chen, Sihan Chen, Yingzhou Yang, Xiaoli Liu, Ji Peng, Leilei Duan, Xiao Deng
Objective-A child safety restraint (CSR) is an effective measure to reduce the risk of child injury from traffic collisions. This study aims to explore knowledge, attitudes and behaviors regarding CSR in a Chinese population. Methods-A cross-sectional survey regarding CSR use was conducted from April to May 2014 in Shenzhen Municipality. Respondents were parents who had at least one child 0 to 6 years of age and simultaneously owned a car. These parents provided a self-report of demographic characteristics as well as information about their knowledge, attitudes and behaviors toward CSR use...
May 23, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28534619/quantitative-solid-state-nmr-study-on-ligand-surface-interaction-in-cysteine-capped-cdse-magic-sized-clusters
#10
Takuya Kurihara, Yasuto Noda, Kiyonori Takegoshi
Ligand-surface interaction of semiconductor nanoparticles (NPs) controls their optoelectronic properties, and thus examinations of the interaction are essential for the nanoelectronic applications of NPs. Herein, solid-state nuclear magnetic resonance (NMR) is performed to unravel the ligand-surface interaction in cysteine-capped CdSe magic-sized clusters. (15)N-(113)Cd through-bond J-filtered NMR directly shows the presence of the nitrogen-cadmium chemical bond for the first time and indicates that ~43% of the amines form the chemical bond...
May 23, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28534501/electronic-evidence-of-temperature-induced-lifshitz-transition-and-topological-nature-in-zrte5
#11
Yan Zhang, Chenlu Wang, Li Yu, Guodong Liu, Aiji Liang, Jianwei Huang, Simin Nie, Xuan Sun, Yuxiao Zhang, Bing Shen, Jing Liu, Hongming Weng, Lingxiao Zhao, Genfu Chen, Xiaowen Jia, Cheng Hu, Ying Ding, Wenjuan Zhao, Qiang Gao, Cong Li, Shaolong He, Lin Zhao, Fengfeng Zhang, Shenjin Zhang, Feng Yang, Zhimin Wang, Qinjun Peng, Xi Dai, Zhong Fang, Zuyan Xu, Chuangtian Chen, X J Zhou
The topological materials have attracted much attention for their unique electronic structure and peculiar physical properties. ZrTe5 has host a long-standing puzzle on its anomalous transport properties manifested by its unusual resistivity peak and the reversal of the charge carrier type. It is also predicted that single-layer ZrTe5 is a two-dimensional topological insulator and there is possibly a topological phase transition in bulk ZrTe5. Here we report high-resolution laser-based angle-resolved photoemission measurements on the electronic structure and its detailed temperature evolution of ZrTe5...
May 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28534407/cdse-nanoplatelet-films-with-controlled-orientation-of-their-transition-dipole-moment
#12
Yunan Gao, Mark C Weidman, William A Tisdale
Using liquid-liquid interfacial assembly, we control the deposition of CdSe nanoplatelets into face-down or edge-up configurations. Controlled assembly, combined with back focal plane imaging, enabled unambiguous determination of the transition dipole orientation. The transition dipole moment of the emissive band-edge exciton in CdSe nanoplatelets was found to be isotropically oriented within the plane of the nanoplatelet, with no measurable out-of-plane component and no preference for the long- or short-axis of the nanoplatelet...
May 23, 2017: Nano Letters
https://www.readbyqxmd.com/read/28534345/korean-version-self-testing-application-for-reading-speed
#13
Soolienah Rhiu, Moses Kim, Jae Hyung Kim, Hye Jin Lee, Tae Hyung Lim
PURPOSE: This study introduces a reading chart application for the iPad tablet in the Korean language and investigates the reading speed in a normal-sighted population according to age group. METHODS: Sixty-three Korean sentences were selected from textbooks for second grade elementary school students. A commonly used typeface in everyday printed material, "BatangChe," was used. Letter size was presented in logarithm of the minimum angle of resolution (logMAR) 0...
May 12, 2017: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/28534342/the-effect-of-preoperative-occlusion-therapy-on-long-term-outcome-after-surgery-for-early-onset-exotropia
#14
Kwang Hoon Shin, Iris Naheah Kim, Hae Jung Paik
PURPOSE: To investigate the effect of preoperative part-time occlusion therapy on long-term surgical success in early-onset exotropia. METHODS: The medical records of patients who underwent surgery for exotropia with onset before the first year of age and who were followed for ≥3 years were reviewed. Patients were divided into two groups according to the degree of compliance with part-time occlusion therapy: the good compliance group (>50% adherence rate) and the poor compliance group (≤50% adherence rate)...
May 11, 2017: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/28534332/-efficacy-comparison-of-robotic-and-laparoscopic-radical-surgery-in-the-treatment-of-middle-low-rectal-cancer
#15
Hairong Zhang, Weitang Yuan, Quanbo Zhou, Xiaoming Gu, Fuqi Wang
OBJECTIVE: To compare the clinical efficacy of robotic and laparoscopic radical surgery in the treatment of middle-low rectal cancers. METHODS: From January 2015 to March 2016, intra-operative and postoperative follow-up data of 30 patients with middle-low rectal cancers who underwent robotic radical resection(robot group) and 32 patients with middle-low rectal cancers who underwent laparoscopic radical resection (laparoscopy group)n in our department were retrospectively collected...
May 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28534316/relationship-between-air-quality-and-outdoor-exercise-behavior-in-china-a-novel-mobile-based-study
#16
Liang Hu, Li Zhu, Yaping Xu, Jiaying Lyu, Kellie Imm, Lin Yang
PURPOSE: Based on data collected from an exercise app, the study aims to provide empirical evidence on the relationship between air quality and patterns of outdoor exercise in China. METHODS: Objective outdoor exercise data spanning 160 days were collected from 153 users of an exercise app, Tulipsport in China. Each exercise mode (running, biking, and walking, respectively) was organized into five air quality categories based on Air Quality Index (AQI): excellent, good, mild pollution, moderate pollution, and serious pollution...
May 22, 2017: International Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/28534242/lvot-vti-is-a-useful-indicator-of-low-ventricular-function-in-young-patients
#17
Manchula Navaratnam, Rajesh Punn, Chandra Ramamoorthy, Theresa A Tacy
Left ventricular outflow tract velocity time integral (LVOT-VTI), a Doppler-derived measure of stroke distance, is used as a surrogate marker of cardiac function in adults. LVOT-VTI is easily obtained, independent of ventricular geometry and wall motion abnormalities. We investigated the relationship between LVOT-VTI and conventional measures of function in young patients by comparing controls to children with dilated cardiomyopathy (DCM). Sixty-two healthy and 52 DCM patients over 1 year were studied retrospectively...
May 22, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28534224/characterization-of-mhc-class-i-in-a-long-distance-migratory-wader-the-icelandic-black-tailed-godwit
#18
Sara Pardal, Anna Drews, José A Alves, Jaime A Ramos, Helena Westerdahl
The major histocompatibility complex (MHC) encodes proteins that are central for antigen presentation and pathogen elimination. MHC class I (MHC-I) genes have attracted a great deal of interest among researchers in ecology and evolution and have been partly characterized in a wide range of bird species. So far, the main focus has been on species within the bird orders Galliformes and Passeriformes, while Charadriiformes remain vastly underrepresented with only two species studied to date. These two Charadriiformes species exhibit striking differences in MHC-I characteristics and MHC-I diversity...
May 23, 2017: Immunogenetics
https://www.readbyqxmd.com/read/28534081/power-of-pedigree-likelihood-analysis-in-extended-pedigrees-to-classify-rare-variants-of-uncertain-significance-in-cancer-risk-genes
#19
Elisabeth A Rosenthal, John Michael O Ranola, Brian H Shirts
Rare and private variants of uncertain significance (VUS) are routinely identified in clinical panel, exome, and genome sequencing. We investigated the power of single family co-segregation analysis to aid classification of VUS. We simulated thousands of pedigrees using demographics in China and the United States, segregating benign and pathogenic variants. Genotypes and phenotypes were simulated using penetrance models for Lynch syndrome and breast/ovarian cancer. We calculated LOD scores adjusted for proband ascertainment (LODadj), to determine power to yield quantitative evidence for, or against, pathogenicity of the VUS...
May 22, 2017: Familial Cancer
https://www.readbyqxmd.com/read/28533985/metabarcoding-monitoring-analysis-the-pros-and-cons-of-using-co-extracted-environmental-dna-and-rna-data-to-assess-offshore-oil-production-impacts-on-benthic-communities
#20
Olivier Laroche, Susanna A Wood, Louis A Tremblay, Gavin Lear, Joanne I Ellis, Xavier Pochon
Sequencing environmental DNA (eDNA) is increasingly being used as an alternative to traditional morphological-based identification to characterize biological assemblages and monitor anthropogenic impacts in marine environments. Most studies only assess eDNA which, compared to eRNA, can persist longer in the environment after cell death. Therefore, eRNA may provide a more immediate census of the environment due to its relatively weaker stability, leading some researchers to advocate for the use of eRNA as an additional, or perhaps superior proxy for portraying ecological changes...
2017: PeerJ
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