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https://www.readbyqxmd.com/read/28324950/a-preliminary-evaluation-of-myoelectrical-energy-distribution-of-the-front-neck-muscles-in-pharyngeal-phase-during-normal-swallowing
#1
Mingxing Zhu, Wanzhang Yang, Oluwarotimi Williams Samuel, Yun Xiang, Jianping Huang, Haiqing Zou, Guanglin Li
Pharyngeal phase is a central hub of swallowing in which food bolus pass through from the oral cavity to the esophageal. Proper understanding of the muscular activities in the pharyngeal phase is useful for assessing swallowing function and the occurrence of dysphagia in humans. In this study, high-density (HD) surface electromyography (sEMG) was used to study the muscular activities in the pharyngeal phase during swallowing tasks involving three healthy male subjects. The root mean square (RMS) of the HD sEMG data was computed by using a series of segmented windows as myoelectrical energy...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28317606/metabolic-phenotyping-of-diet-and-dietary-intake
#2
J Brignardello, E Holmes, I Garcia-Perez
Nutrition provides the building blocks for growth, repair, and maintenance of the body and is key to maintaining health. Exposure to fast foods, mass production of dietary components, and wider importation of goods have challenged the balance between diet and health in recent decades, and both scientists and clinicians struggle to characterize the relationship between this changing dietary landscape and human metabolism with its consequent impact on health. Metabolic phenotyping of foods, using high-density data-generating technologies to profile the biochemical composition of foods, meals, and human samples (pre- and postfood intake), can be used to map the complex interaction between the diet and human metabolism and also to assess food quality and safety...
2017: Advances in Food and Nutrition Research
https://www.readbyqxmd.com/read/28316346/invasion-trajectory-of-pacific-oysters-in-the-northern-wadden-sea
#3
Karsten Reise, Christian Buschbaum, Heike Büttger, Johannes Rick, K Mathias Wegner
Invasion trajectories of introduced alien species usually begin with a long establishment phase of low abundance, often followed by exponential expansion and subsequent adjustment phases. We review the first 26 years of feral Pacific oysters Crassostrea gigas around the island of Sylt in the Wadden Sea (North Sea, NE Atlantic), and reveal causal conditions for the invasion phases. Sea-based oyster farming with repeated introductions made establishment of feral oysters almost inevitable. Beds of mussels Mytilus edulis on mud flats offered firm substrate for attachment and ideal growth conditions around low tide level...
2017: Marine Biology
https://www.readbyqxmd.com/read/28314801/characterization-of-foci-and-breakthrough-sites-during-persistent-and-long-standing-persistent-atrial-fibrillation-in-patients-studies-using-high-density-510-512-electrodes-biatrial-epicardial-mapping
#4
Seungyup Lee, Jayakumar Sahadevan, Celeen M Khrestian, Alan Markowitz, Albert L Waldo
BACKGROUND: We previously demonstrated that persistent and long-standing persistent atrial fibrillation is maintained by activation emanating from foci and breakthrough sites of different cycle lengths (CLs). The purpose of this study was to characterize the behavior of focal and nonrandom breakthrough activation identified during high-density mapping of atrial fibrillation in these patients. METHODS AND RESULTS: During open heart surgery, we recorded activation from both atria simultaneously using 510 to 512 epicardial electrodes along with ECG lead II in 12 patients with persistent and long-standing persistent atrial fibrillation...
March 17, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28306555/assessment-of-dosimetric-impact-of-system-specific-geometric-distortion-in-an-mri-only-based-radiotherapy-workflow-for-prostate
#5
C Gustafsson, F Nordström, E Persson, J Brynolfsson, L E Olsson
Dosimetric errors in a magnetic resonance imaging (MRI) only radiotherapy workflow may be caused by system specific geometric distortion from MRI. The aim of this study was to evaluate the impact on planned dose distribution and delineated structures for prostate patients, originating from this distortion. A method was developed, in which computer tomography (CT) images were distorted using the MRI distortion field. The displacement map for an optimized MRI treatment planning sequence was measured using a dedicated phantom in a 3 T MRI system...
March 17, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28301713/population-structure-and-genetic-basis-of-the-agronomic-traits-of-upland-cotton-in-china-revealed-by-a-genome-wide-association-study-using-high-density-snps
#6
Cong Huang, Xinhui Nie, Chao Shen, Chunyuan You, Wu Li, Wenxia Zhao, Xianlong Zhang, Zhongxu Lin
Gossypium hirsutum L. represents the largest source of textile fibre, and China is one of the largest cotton producing and consuming countries in the world. To investigate the genetic architecture of the agronomic traits of upland cotton in China, a diverse and nation-wide population containing 503 G. hirsutum accessions was collected for a genome-wide association study (GWAS) on 16 agronomic traits. The accessions were planted in four places from 2012 to 2013 for phenotyping. The CottonSNP63K array and a published high-density map based on this array were used for genotyping...
March 16, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28300291/are-rare-variants-really-independent
#7
Asuman Turkmen, Shili Lin
Recent advances in genotyping with high-density markers allow researchers access to genomic variants including rare ones. Linkage disequilibrium (LD) is widely used to provide insight into evolutionary history. It is also the basis for association mapping in humans and other species. Better understanding of the genomic LD structure may lead to better-informed statistical tests that can improve the power of association studies. Although rare variant associations with common diseases (RVCD) have been extensively studied recently, there is very limited understanding, and even controversial view of LD structures among rare variants and between rare and common variants...
March 16, 2017: Genetic Epidemiology
https://www.readbyqxmd.com/read/28297598/centimeter-scale-cvd-growth-of-highly-crystalline-single-layer-mos2-film-with-spatial-homogeneity-and-the-visualization-of-grain-boundaries
#8
Li Tao, Kun Chen, Zefeng Chen, Wenjun Chen, Xuchun Gui, Huanjun Chen, Xinming Li, Jianbin Xu
MoS2 monolayer attracts considerable attention due to its semiconducting nature with a direct bandgap which can be tuned by various approaches. Yet controllable and low-cost method to produce large-scale, high-quality and uniform MoS2 monolayer continuous film, which is of crucial importance for practical applications and optical measurements, remains a great challenge. Most previously reported MoS2 monolayer films had limited crystalline sizes, and the high density of grain boundaries inside the films greatly affected the electrical properties...
March 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28290316/food-losses-shelf-life-extension-and-environmental-impact-of-a-packaged-cheesecake-a-life-cycle-assessment
#9
Michele Mario Gutierrez, Marta Meleddu, Antonio Piga
Packaging is associated with a high environmental impact. This is also the case in the food industry despite packaging being necessary for maintaining food quality, safety assurance and preventing food waste. The aim of the present study was to identify improvements in food packaging solutions able to minimize environmental externalities while maximizing the economic sustainability. To this end, the life cycle assessment (LCA) methodology was applied to evaluate the environmental performance of new packaging solutions...
January 2017: Food Research International
https://www.readbyqxmd.com/read/28290194/inkjet-printed-photodetector-arrays-based-on-hybrid-perovskite-ch3nh3pbi3-microwires
#10
Yang Liu, Fushan Li, Chandrasekar Perumal Veeramalai, Wei Chen, Tailiang Guo, Chaoxing Wu, Tae Whan Kim
Hybrid perovskite CH3NH3PbI3 has attracted extensive research interests in optoelectronic devices in recent years. Herein, inkjet printing method has been employed to deposit a perovskite CH3NH3PbI3 layer. By choosing the proper solvent and controlling the crystal growth rate, hybrid perovskite CH3NH3PbI3 nanowires, microwires, network and islands were synthesized by means of inkjet printing. Electrode-gap-electrode lateral-structured photodetectors were fabricated with these different crystals, of which hybrid perovskite microwires-based photodetector would balance the uniformity and low defects to obtain switching ratio of 16000%, responsivity of 1...
March 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28283532/molecular-architecture-of-the-n-type-atpase-rotor-ring-from-burkholderia-pseudomallei
#11
Sarah Schulz, Martin Wilkes, Deryck J Mills, Werner Kühlbrandt, Thomas Meier
The genome of the highly infectious bacterium Burkholderia pseudomallei harbors an atp operon that encodes an N-type rotary ATPase, in addition to an operon for a regular F-type rotary ATPase. The molecular architecture of N-type ATPases is unknown and their biochemical properties and cellular functions are largely unexplored. We studied the B. pseudomallei N1No-type ATPase and investigated the structure and ion specificity of its membrane-embedded c-ring rotor by single-particle electron cryo-microscopy. Of several amphiphilic compounds tested for solubilizing the complex, the choice of the low-density, low-CMC detergent LDAO was optimal in terms of map quality and resolution...
March 10, 2017: EMBO Reports
https://www.readbyqxmd.com/read/28282453/the-use-of-a-novel-signal-analysis-to-identify-the-origin-of-idiopathic-right-ventricular-outflow-tract-ventricular-tachycardia-during-sinus-rhythm-simultaneous-amplitude-frequency-electrogram-transformation-mapping
#12
Abigail Louise D Te, Satoshi Higa, Fa-Po Chung, Chin-Yu Lin, Men-Tzung Lo, Che-An Liu, Chen Lin, Yi-Chung Chang, Shih-Lin Chang, Li-Wei Lo, Yu-Feng Hu, Ta-Chuan Tuan, Tze-Fan Chao, Jonan Liao, Yao-Ting Chang, Chung-Hsing Lin, Yuan Hung, Shinya Yamada, Kuo-Li Pan, Yenn-Jiang Lin, Shih-Ann Chen
INTRODUCTION: The signal characteristics of intracardiac bipolar electrograms at the origin of idiopathic RVOT-VT during sinus rhythm remain unclear. OBJECTIVE: The study sought to develop a novel real-time/online technique, simultaneous amplitude frequency electrogram transformation (SAFE-T), to quantify and localize the diseased ventricular substrate in idiopathic RVOT-VT. METHODS: We retrospectively investigated the intracardiac bipolar recordings in 70 consecutive patients (26% male, mean age 42±12 years) who underwent successful radiofrequency catheter ablation of idiopathic RVOT-VT...
2017: PloS One
https://www.readbyqxmd.com/read/28281636/a-high-density-snp-genetic-map-consisting-of-a-complete-set-of-homologous-groups-in-autohexaploid-sweetpotato-ipomoea-batatas
#13
Kenta Shirasawa, Masaru Tanaka, Yasuhiro Takahata, Daifu Ma, Qinghe Cao, Qingchang Liu, Hong Zhai, Sang-Soo Kwak, Jae Cheol Jeong, Ung-Han Yoon, Hyeong-Un Lee, Hideki Hirakawa, Sachiko Isobe
Sweetpotato (Ipomoea batatas) is an autohexaploid species with 90 chromosomes (2n = 6x = 90) and a basic chromosome number of 15, and is therefore regarded as one of the most challenging species for high-density genetic map construction. Here, we used single nucleotide polymorphisms (SNPs) identified by double-digest restriction site-associated DNA sequencing based on next-generation sequencing technology to construct a map for sweetpotato. We then aligned the sequence reads onto the reference genome sequence of I...
March 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28280866/qtl-mapping-of-fruit-mineral-contents-provides-new-chances-for-molecular-breeding-of-tomato-nutritional-traits
#14
Carmen Capel, Fernando J Yuste-Lisbona, Gloria López-Casado, Trinidad Angosto, Antonio Heredia, Jesús Cuartero, Rafael Fernández-Muñoz, Rafael Lozano, Juan Capel
Agronomical characterization of a RIL population for fruit mineral contents allowed for the identification of QTL controlling these fruit quality traits, flanked by co-dominant markers useful for marker-assisted breeding. Tomato quality is a multi-variant attribute directly depending on fruit chemical composition, which in turn determines the benefits of tomato consumption for human health. Commercially available tomato varieties possess limited variability in fruit quality traits. Wild species, such as Solanum pimpinellifolium, could provide different nutritional advantages and can be used for tomato breeding to improve overall fruit quality...
March 9, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28275856/-window-sliding-analysis-combined-with-high-density-and-rapid-electroanatomical-mapping-its-efficacy-and-the-outcome-of-catheter-ablation-of-atrial-tachycardia
#15
Kosuke Nakasuka, Koji Miyamoto, Takashi Noda, Tsukasa Kamakura, Mitsuru Wada, Ikutaro Nakajima, Kohei Ishibashi, Yuko Inoue, Hideo Okamura, Satoshi Nagase, Takeshi Aiba, Shiro Kamakura, Wataru Shimizu, Teruo Noguchi, Toshihisa Anzai, Satoshi Yasuda, Nobuyuki Ohte, Kengo Kusano
Atrial tachycardia (AT) is a clinically challenging arrhythmia that can occur based on atrial substrates. Nowadays, a rapid construction of three-dimensional electroanatomical maps, which has an analysis function for complex arrhythmias, named 'Window Sliding' (WS) is available. However, little data has revealed the efficacy of this mapping strategy. The aim of this study was to investigate the efficacy of the WS analysis for AT treatments. All patients underwent electrophysiological studies during ATs and the characteristics of the ATs were analyzed using rapid high-density mapping followed by the WS analysis...
March 8, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28275817/discovery-and-characterization-of-two-new-stem-rust-resistance-genes-in-aegilops-sharonensis
#16
Guotai Yu, Nicolas Champouret, Burkhard Steuernagel, Pablo D Olivera, Jamie Simmons, Cole Williams, Ryan Johnson, Matthew J Moscou, Inmaculada Hernández-Pinzón, Phon Green, Hanan Sela, Eitan Millet, Jonathan D G Jones, Eric R Ward, Brian J Steffenson, Brande B H Wulff
We identified two novel wheat stem rust resistance genes, Sr-1644-1Sh and Sr-1644-5Sh in Aegilops sharonensis that are effective against widely virulent African races of the wheat stem rust pathogen. Stem rust is one of the most important diseases of wheat in the world. When single stem rust resistance (Sr) genes are deployed in wheat, they are often rapidly overcome by the pathogen. To this end, we initiated a search for novel sources of resistance in diverse wheat relatives and identified the wild goatgrass species Aegilops sharonesis (Sharon goatgrass) as a rich reservoir of resistance to wheat stem rust...
March 8, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28274293/genome-wide-population-structure-and-evolutionary-history-of-the-frizarta-dairy-sheep
#17
A Kominakis, A L Hager-Theodorides, A Saridaki, G Antonakos, G Tsiamis
In the present study, we used genomic data, generated with a medium density single nucleotide polymorphisms (SNP) array, to acquire more information on the population structure and evolutionary history of the synthetic Frizarta dairy sheep. First, two typical measures of linkage disequilibrium (LD) were estimated at various physical distances that were then used to make inferences on the effective population size at key past time points. Population structure was also assessed by both multidimensional scaling analysis and k-means clustering on the distance matrix obtained from the animals' genomic relationships...
March 9, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28270970/qualitative-and-quantitative-evaluation-of-in-vivo-sd-oct-measurement-of-rat-brain
#18
Yijing Xie, Laura-Adela Harsan, Thomas Bienert, Robert D Kirch, Dominik von Elverfeldt, Ulrich G Hofmann
OCT has been demonstrated as an efficient imaging modality in various biomedical and clinical applications. However, there is a missing link with respect to the source of contrast between OCT and other modern imaging modalities, no quantitative comparison has been demonstrated between them, yet. We evaluated, to our knowledge, for the first time in vivo OCT measurement of rat brain with our previously proposed forward imaging method by both qualitatively and quantitatively correlating OCT with the corresponding T1-weighted and T2-weighted magnetic resonance images, fiber density map (FDM), and two types of histology staining (cresyl violet and acetylcholinesterase AchE), respectively...
February 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28270287/correlation-between-dual-energy-and-perfusion-ct-in-patients-with-focal-liver-lesions-using-third-generation-dual-source-ct-scanner
#19
Jia Xu, Yongchang Zheng, Xuan Wang, Huadan Xue, Shitian Wang, Jixiang Liang, Zhengyu Jin
Objective To compare measurements of dual-energy CT iodine map parameters and liver perfusion CT parameters in patients with focal liver lesions using a third-generation dual-source CT scanner. Methods Between November 2015 and August 2016,33 patients with non-cystic focal lesions of liver were enrolled in this study. CT examinations were performed with a third-generation dual-source CT. The study CT protocol included a perfusion CT and dual-energy arterial and portal venous scans,with a time interval of 15 minutes...
February 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28269106/using-surface-electromyography-to-detect-changes-in-innervation-zones-pattern-after-human-cervical-spinal-cord-injury
#20
Babak Afsharipour, Milap S Sandhu, Ghulam Rasool, Nina L Suresh, William Z Rymer
Human spinal cord injuries (SCI) disrupt the pathways between brain and spinal cord, resulting in substantial impairment and loss of function. Currently, we do not have the ability to precisely quantify the "functional" level of motor injury. The aim of this study is to determine if high-density surface electromyography imaging (SEI) can be used to characterize the location and extent of the spinal lesion. SEI is a safe and non-invasive technique, which uses several electrodes to provide a map of muscle activity...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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