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https://www.readbyqxmd.com/read/28936513/solar-cells-with-pbs-quantum-dot-sensitized-tio2-multiwalled-carbon-nanotube-composites-sulfide-titania-gel-and-tin-sulfide-coated-c-fabric
#1
Ramesh K Kokal, Melepurath Deepa, Ankarao Kalluri, Shrishti Singh, Isaac Macwan, Prabir K Patra, Jeff Gilarde
Novel approaches to boost quantum dot solar cell (QDSC) efficiencies are in demand. Herein, three strategies are used: (i) a hydrothermally synthesized TiO2-multiwalled carbon nanotube (MWCNT) composite instead of conventional TiO2, (ii) a counter electrode (CE) that has not been applied to QDSCs until now, namely, tin sulfide (SnS) nanoparticles (NPs) coated over a conductive carbon (C)-fabric, and (iii) a quasi-solid-state gel electrolyte composed of S(2-), an inert polymer and TiO2 nanoparticles as opposed to a polysulfide solution based hole transport layer...
September 22, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28936219/a-high-density-genetic-map-derived-from-rad-sequencing-and-its-application-in-qtl-analysis-of-yield-related-traits-in-vigna-unguiculata
#2
Lei Pan, Nian Wang, Zhihua Wu, Rui Guo, Xiaolu Yu, Yu Zheng, Qiuju Xia, Songtao Gui, Chanyou Chen
Cowpea [Vigna unguiculata (L.) Walp.] is an annual legume of economic importance and widely grown in the semi-arid tropics. However, high-density genetic maps of cowpea are still lacking. Here, we identified 34,868 SNPs (single nucleotide polymorphisms) that were distributed in the cowpea genome based on the RAD sequencing (restriction-site associated DNA sequencing) technique using a population of 170 individuals (two cowpea parents and 168 F2:3 progenies). Of these, 17,996 reliable SNPs were allotted to 11 consensus linkage groups (LGs)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28935715/identification-of-the-centromeres-of-leishmania-major-revealing-the-hidden-pieces
#3
Maria-Rosa Garcia-Silva, Lauriane Sollelis, Cameron Ross MacPherson, Slavica Stanojcic, Nada Kuk, Lucien Crobu, Frédéric Bringaud, Patrick Bastien, Michel Pagès, Artur Scherf, Yvon Sterkers
Leishmania affects millions of people worldwide. Its genome undergoes constitutive mosaic aneuploidy, a type of genomic plasticity that may serve as an adaptive strategy to survive distinct host environments. We previously found high rates of asymmetric chromosome allotments during mitosis that lead to the generation of such ploidy. However, the underlying molecular events remain elusive. Centromeres and kinetochores most likely play a key role in this process, yet their identification has failed using classical methods...
September 21, 2017: EMBO Reports
https://www.readbyqxmd.com/read/28934223/ursodeoxycholic-acid-prevents-ventricular-conduction-slowing-and-arrhythmia-by-restoring-t-type-calcium-current-in-fetuses-during-cholestasis
#4
Oladipupo Adeyemi, Anita Alvarez-Laviada, Francisca Schultz, Effendi Ibrahim, Michael Trauner, Catherine Williamson, Alexey V Glukhov, Julia Gorelik
BACKGROUND: Increased maternal serum bile acid concentrations in intrahepatic cholestasis of pregnancy (ICP) are associated with fetal cardiac arrhythmias. Ursodeoxycholic acid (UDCA) has been shown to demonstrate anti-arrhythmic properties via preventing ICP-associated cardiac conduction slowing and development of reentrant arrhythmias, although the cellular mechanism is still being elucidated. METHODS: High-resolution fluorescent optical mapping of electrical activity and electrocardiogram measurements were used to characterize effects of UDCA on one-day-old neonatal and adult female Langendorff-perfused rat hearts...
2017: PloS One
https://www.readbyqxmd.com/read/28932230/high-density-linkage-map-construction-and-qtl-detection-for-three-silique-related-traits-in-orychophragmus-violaceus-derived-brassica-napus-population
#5
Yi Yang, Yusen Shen, Shunda Li, Xianhong Ge, Zaiyun Li
Seeds per silique (SS), seed weight (SW), and silique length (SL) are important determinant traits of seed yield potential in rapeseed (Brassica napus L.), and are controlled by naturally occurring quantitative trait loci (QTLs). Mapping QTLs to narrow chromosomal regions provides an effective means of characterizing the genetic basis of these complex traits. Orychophragmus violaceus is a crucifer with long siliques, many SS, and heavy seeds. A novel B. napus introgression line with many SS was previously selected from multiple crosses (B...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28931821/measuring-the-effects-of-particle-orientation-to-improve-the-efficiency-of-electron-cryomicroscopy
#6
Katerina Naydenova, Christopher J Russo
The orientation distribution of a single-particle electron cryomicroscopy specimen limits the resolution of the reconstructed density map. Here we define a statistical quantity, the efficiency, E od, which characterises the orientation distribution via its corresponding point spread function. The efficiency measures the ability of the distribution to provide uniform information and resolution in all directions of the reconstruction, independent of other factors. This metric allows rapid and rigorous evaluation of specimen preparation methods, assisting structure determination to high resolution with minimal data...
September 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28930100/the-joule-heating-problem-in-silver-nanowire-transparent-electrodes
#7
H H Khaligh, L Xu, A Khosropour, A Madeira, M Romano, C Pradére, M Tréguer-Delapierre, L Servant, M A Pope, I A Goldthorpe
Silver nanowire transparent electrodes have shown considerable potential to replace conventional transparent conductive materials. However, in this report we show that Joule heating is a unique and serious problem with these electrodes. When conducting current densities encountered in organic solar cells, the average surface temperature of indium tin oxide (ITO) and silver nanowire electrodes, both with sheet resistances of 60 ohms/square, remains below 35 °C. However, in contrast to ITO, the temperature in the nanowire electrode is very non-uniform, with some localized points reaching temperatures above 250 °C...
September 20, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28929970/bayesian-unidimensional-scaling-for-visualizing-uncertainty-in-high-dimensional-datasets-with-latent-ordering-of-observations
#8
Lan Huong Nguyen, Susan Holmes
BACKGROUND: Detecting patterns in high-dimensional multivariate datasets is non-trivial. Clustering and dimensionality reduction techniques often help in discerning inherent structures. In biological datasets such as microbial community composition or gene expression data, observations can be generated from a continuous process, often unknown. Estimating data points' 'natural ordering' and their corresponding uncertainties can help researchers draw insights about the mechanisms involved...
September 13, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28929733/energy-level-alignment-of-n-doping-fullerenes-and-fullerene-derivatives-using-air-stable-dopant
#9
Qinye Bao, Xianjie Liu, Slawomir Braun, Yanqing Li, Jian-Xin Tang, Chun-Gang Duan, Mats Fahlman
Doping has been proved to be one of the powerful technologies to achieve significant improvement in organic electronic device performance. Herein, we systematically map out the interface properties of solution processed air stable n-type 4-(1,3-dimethyl-2,3-dihydro-1H-benzoimidazol-2-yl)phenyl (DMBI) doping fullerenes and fullerene derivatives, and establish an universal energy level alignment scheme for this class of n-doped system. At low doping levels where the charge transfer doping induces mainly bound charges, the energy level alignment of the n-doping organic semiconductor can be described by combining integer charger transfer (ICT)-induced shifts with a so-called double dipole step...
September 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28928647/individual-differences-in-frequency-and-topography-of-slow-and-fast-sleep-spindles
#10
Roy Cox, Anna C Schapiro, Dara S Manoach, Robert Stickgold
Sleep spindles are transient oscillatory waveforms that occur during non-rapid eye movement (NREM) sleep across widespread cortical areas. In humans, spindles can be classified as either slow or fast, but large individual differences in spindle frequency as well as methodological difficulties have hindered progress towards understanding their function. Using two nights of high-density electroencephalography recordings from 28 healthy individuals, we first characterize the individual variability of NREM spectra and demonstrate the difficulty of determining subject-specific spindle frequencies...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28924118/atrial-arrhythmia-ablation-in-adult-congenital-heart-disease-with-a-persistent-left-side-superior-vena-cava
#11
Shinya Yamada, Li-Wei Lo, Yenn-Jiang Lin, Atul Prabhu, Shih-Ann Chen
We herein report a case of atrial tachycardia (AT) originating from the dilated coronary sinus (CS) connected to a persistent left superior vena cava. The earliest activation site of AT was localized at the superior CS ostium, identified using a novel ultra-rapid high-density mapping system (Rhythmia™). Successful ablation was performed at the corresponding position. This report demonstrated the utility of an ultra-rapid high-density mapping system in identifying arrhythmogenic foci in adult cases of congenital heart disease...
September 15, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28923925/exposure-to-seismic-air-gun-signals-causes-physiological-harm-and-alters-behavior-in-the-scallop-pecten-fumatus
#12
Ryan D Day, Robert D McCauley, Quinn P Fitzgibbon, Klaas Hartmann, Jayson M Semmens
Seismic surveys map the seabed using intense, low-frequency sound signals that penetrate kilometers into the Earth's crust. Little is known regarding how invertebrates, including economically and ecologically important bivalves, are affected by exposure to seismic signals. In a series of field-based experiments, we investigate the impact of exposure to seismic surveys on scallops, using measurements of physiological and behavioral parameters to determine whether exposure may cause mass mortality or result in other sublethal effects...
September 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28922944/revised-inverse-problem-algorithm-based-prediction-of-coronary-artery-stenosis-readings-from-the-clinical-data-of-patients-with-coronary-heart-diseases
#13
Lung-Fa Pan, Shao-Wen Chiu, Min-Feng Xiao, Chia-Hui Chen, Lung-Kwang Pan
AIM: Coronary artery stenosis readings were predicted in this study on the basis of clinical data for patients with coronary heart diseases using the inverse problem algorithm. METHOD: Five factors, including age, BSA (body surface area), MAP (mean artery pressure), sugar AC (ante cibum), and LDL-C (low-density Lipoprotein-Cholesterol) were incorporated into a nonlinear first-order regression fit analysis to develop a prediction equation with sixteen terms derived via a revised inverse problem algorithm implemented through the STATISTICA default regression fit...
September 18, 2017: Computer Assisted Surgery (Abingdon, England)
https://www.readbyqxmd.com/read/28922608/j-si-h-coupling-constants-of-activated-si-h-bonds
#14
Petra Meixner, Kilian Batke, Andreas Fischer, Dominik Schmitz, Georg Eickerling, Marcel Kalter, Klaus Ruhland, Klaus Eichele, José E Barquera-Lozada, Nicola P M Casati, Fabio Montisci, Piero Macchi, Wolfgang Scherer
We outline in this combined experimental and theoretical NMR study that sign and magnitude of J(Si,H) coupling constants provide reliable indicators to evaluate the extent of the oxidative addition of Si-H bonds in hydrosilane complexes. In combination with experimental electron density studies and MO analyses a simple structure-property relationship emerges: positive J(Si,H) coupling constants are observed in cases where M → L π-back-donation (M = transition metal; L = hydrosilane ligand) dominates. The corresponding complexes are located close to the terminus of the respective oxidative addition trajectory...
September 18, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28920597/an-assessment-of-the-random-phase-approximation-functional-and-characteristics-analysis-for-noncovalent-cation-%C3%AF-interactions
#15
He Su, Qiyang Wu, Hongyan Wang, Hui Wang
The binding energy is of great importance in understanding the formation and stability of noncovalent interactions. However, the determination of the binding energy with high precision and efficiency in medium- and long-range noncovalent interactions is still challenging for quantum chemistry. Here, we assess the performance of random-phase approximation (RPA), a fully non-local fifth-rung of the Jacob ladder functional, in determining the binding energy of cation-π systems (cation = Li(+), Na(+), Be(2+), Mg(2+), Al(+), and NH4(+); π = C6H6), which, to the best of our knowledge, has not been investigated...
September 18, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28918527/alterations-in-epididymal-proteomics-and-antioxidant-activity-of-mice-exposed-to-fluoride
#16
Zilong Sun, Sujuan Li, Yuxiang Yu, Hongyu Chen, Mohammad Mehdi Ommati, Ram Kumar Manthari, Ruiyan Niu, Jundong Wang
It is well known that high fluoride results in low fertility. Epididymis is the important place for spermatozoa maturation, which is essential for successful fertilization. In the previous studies, fluoride was reported to damage the epididymal structure of mouse and rabbit. However, the mechanism underlying sodium fluoride (NaF)-induced epididymal toxicity has not yet been well elucidated. The aim of this study is to explore the global protein alterations in epididymis of mice exposed to NaF using the iTRAQ technique...
September 16, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/28917813/structural-impacts-on-the-timing-and-amplitude-of-the-negative-bold-response
#17
David Provencher, Alexandre Bizeau, Guillaume Gilbert, Yves Bérubé-Lauzière, Kevin Whittingstall
The positive (PBR) and negative BOLD responses (NBR) arising in task-fMRI display varying magnitudes and dynamics across voxels. While the effects of structure, particularly of veins, on the PBR have been studied, little is known of NBR-structure relationships. Like the PBR, the NBR is often used as a surrogate marker of neuronal activation in both basic and clinical research and assessing its relationship with cortical structure may help interpret group differences. We therefore investigated how local structure affects BOLD amplitude and timing in PBR and NBR areas using multi-band fMRI during visual stimulation to obtain high temporal resolution (TR=0...
September 13, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28913885/development-and-evaluation-of-high-density-snp-array-axiom-%C3%A2-cicersnp%C3%A2-array-for-high-resolution-genetic-mapping-and-breeding-applications-in-chickpea
#18
Manish Roorkiwal, Ankit Jain, Sandip M Kale, Dadakhalandar Doddamani, Annapurna Chitikineni, Mahendar Thudi, Rajeev K Varshney
To accelerate genomics research and molecular breeding applications in chickpea, a high-throughput SNP genotyping platform 'Axiom(®) CicerSNP array' has been designed, developed and validated. Screening of whole genome re-sequencing data from 429 chickpea lines identified 4.9 million SNPs from which a sub-set of 70,463 high quality non redundant SNPs was selected using different stringent filter criteria's. This was further narrowed down to 61,174 SNPs based on p-convert score ≥ 0.3, of which 50,590 SNPs could be tiled on array...
September 15, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28912473/fine-scale-harbour-seal-usage-for-informed-marine-spatial-planning
#19
Esther L Jones, Carol E Sparling, Bernie J McConnell, Christopher D Morris, Sophie Smout
High-resolution distribution maps can help inform conservation measures for protected species; including where any impacts of proposed commercial developments overlap the range of focal species. Around Orkney, northern Scotland, UK, the harbour seal (Phoca vitulina) population has decreased by 78% over 20 years. Concern for the declining harbour seal population has led to constraints being placed on tidal energy generation developments. For this study area, telemetry data from 54 animals tagged between 2003 and 2015 were used to produce density estimation maps...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28911868/central-and-peripheral-expression-sites-of-phoenixin-14-immunoreactivity-in-rats
#20
Philip Prinz, Sophie Scharner, Tiemo Friedrich, Martha Schalla, Miriam Goebel-Stengel, Matthias Rose, Andreas Stengel
Phoenixin is a pleiotropic peptide involved in reproduction, anxiety and recently also implicated in the control of food intake. Besides the 20-amino acid phoenixin, the 14-amino acid phoenixin-14 also shows bioactive properties. However, the expression sites of phoenixin-14 in the brain and peripheral tissues are not yet described in detail. Therefore, a mapping of the brain and peripheral tissues from male and female Sprague-Dawley rats with a specific phoenixin-14 antibody was performed using western blot and immunohistochemistry...
September 11, 2017: Biochemical and Biophysical Research Communications
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