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https://www.readbyqxmd.com/read/28645085/extending-the-functionality-of-the-slurry-ferrihydrite-dgt-method-performance-evaluation-for-the-measurement-of-vanadate-arsenate-antimonate-and-molybdate-in-water
#1
Shu Zhang, Paul N Williams, Chun-Yang Zhou, Lena Q Ma, Jun Luo
The monitoring of oxyanions in waters, presents significant challenges due to their relatively low concentrations, and a characteristically changeable/unstable/reactive geochemistry with high spatial and temporal turnover. This results in a very heterogeneous pattern of mobility and bioavailability, which is difficult to capture reliably and in a cost effective manner. The diffusive gradients in thin-films (DGT) technique is a popular analytical tool for testing water quality, primarily because it provides a time-integrated measurement...
June 18, 2017: Chemosphere
https://www.readbyqxmd.com/read/28644981/chemical-profiling-and-antioxidant-evaluation-of-yangxinshi-tablet-by-hplc-esi-q-tof-ms-ms-combined-with-dpph-assay
#2
Junfeng Zhu, Xiaojiao Yi, Jinghui Zhang, Shuqing Chen, Yongjiang Wu
Yangxinshi Tablet (YXST) is a Chinese patent medicine commonly used to treat cardiovascular diseases. However, its detailed chemical basis and mechanisms of action have not been clarified. In this study, high performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight mass spectrometry (HPLC-ESI-Q-TOF-MS) was applied for comprehensive analysis of the chemical constituents in YXST. A total of 127 compounds, including 19 phenolic acids, 12 alkaloids, 51 flavanoids, 32 triterpenoids, 2 lignans, 2 phenylethanoid glycosides, 2 anthraquinones, 1 coumarin, and 6 other compounds, were identified or tentatively deduced by comparing their retention times and MS spectra with those of authentic standards or literature data...
June 15, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28644641/emergent-weyl-fermion-excitations-in-tap-explored-by-181-ta-quadrupole-resonance
#3
H Yasuoka, T Kubo, Y Kishimoto, D Kasinathan, M Schmidt, B Yan, Y Zhang, H Tou, C Felser, A P Mackenzie, M Baenitz
The ^{181}Ta quadrupole resonance [nuclear quadrupole resonance (NQR)] technique is utilized to investigate the microscopic magnetic properties of the Weyl semimetal TaP. We find three zero-field NQR signals associated with the transition between the quadrupole split levels for Ta with I=7/2 nuclear spin. A quadrupole coupling constant, ν_{Q}=19.250  MHz, and an asymmetric parameter of the electric field gradient, η=0.423, are extracted, in good agreement with band structure calculations. In order to examine the magnetic excitations, the temperature dependence of the spin-lattice relaxation rate (1/T_{1}T) is measured for the f_{2} line (±5/2↔±3/2 transition)...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28644632/mott-transition-in-the-a15-phase-of-cs_-3-c_-60-absence-of-a-pseudogap-and-charge-order
#4
H Alloul, P Wzietek, T Mito, D Pontiroli, M Aramini, M Riccò, J P Itie, E Elkaim
We present a detailed NMR study of the insulator-to-metal transition induced by an applied pressure p in the A15 phase of Cs_{3}C_{60}. We evidence that the insulating antiferromagnetic (AFM) and superconducting (SC) phases coexist only in a narrow p range. At fixed p, in the metallic state above the SC transition T_{c}, the ^{133}Cs and ^{13}C NMR spin-lattice relaxation data are seemingly governed by a pseudogaplike feature. We prove that this feature, also seen in the ^{133}Cs NMR shift data, is rather a signature of the Mott transition which broadens and smears out progressively for increasing (p,T)...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28644575/comparison-of-10-days-levofloxacin-bismuth-based-quadruple-therapy-and-levofloxacin-based-triple-therapy-for-helicobacter-pylori-therapy
#5
Tzung-Shiun Wu, Ping-I Hsu, Chao-Hung Kuo, Huang-Ming Hu, I-Chen Wu, Sophie S W Wang, Yen-Hsu Chen, Deng-Chyang Wu, Wei-Wen Su, Fu-Chen Kuo
BACKGROUND: This was a prospective study, the aid was to prove if levofloxacin plus Bismuth-based quadruple therapy was more effective than levofloxacin-based triple therapy after failure of first-line therapies. METHODS: We collected total of 67 patients, who was infected by H.pylori. Patients were enrolled and were randomly assigned to two groups; one was levofloxacin plus Bismuth-based quadruple therapy (RBAL group) (Rabeprazole 20 mg b.i.d., bismuth subcitrate 120 mg q...
June 23, 2017: Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28644547/a-genetic-epidemiology-study-of-congenital-adrenal-hyperplasia-in-italy
#6
Alessandro Gialluisi, Soara Menabò, Lilia Baldazzi, Letizia Casula, Antonella Meloni, Maria Carla Farci, Stefano Mariotti, Luisa Balestrino, Rita Ortolano, Stefania Murru, Carlo Carcassi, Sandro Loche, Antonio Balsamo, Giovanni Romeo
Congenital Adrenal Hyperplasia due to 21-hydroxylase deficiency (21OHD-CAH) is an autosomal recessive disorder affecting steroidogenesis, due to mutations in CYP21A2 (6p21.3). 21OHD-CAH neonatal screening is based on 17-hydroxyprogesterone (17OHP) serum levels, showing high type I error rate and low sensitivity to mild CAH forms. Here, we used an epidemiological approach, which estimates the allelic frequency (q) of an autosomal recessive disorder using the proportion of homozygous patients, the mutational spectrum and the inbreeding coefficient in a sample of affected individuals...
June 23, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/28644506/reduced-graphene-oxide-coated-porous-carbon-sulfur-nanofiber-as-a-flexible-paper-electrode-for-lithium-sulfur-batteries
#7
R X Chu, J Lin, C Q Wu, J Zheng, Y L Chen, J Zhang, R H Han, Y Zhang, H Guo
Lithium-sulfur (Li-S) batteries have attracted great attention owing to their excellent electrochemical properties, such as the high discharge voltage of 2.3 V, specific capacity of 1675 mA h g(-1) and energy density of 2600 Wh kg(-1). The widely used slurry made electrodes of Li-S batteries are plagued by the serious shuttle effect and insulating nature of sulfur. Herein, a reduced graphene oxide coated porous carbon nanofiber flexible paper (rGO@S-PCNP) was fabricated and directly used as an additive-free cathode for Li-S batteries...
June 23, 2017: Nanoscale
https://www.readbyqxmd.com/read/28644199/structure-and-function-of-the-human-insula
#8
Lucina Q Uddin, Jason S Nomi, Benjamin Hébert-Seropian, Jimmy Ghaziri, Olivier Boucher
The insular cortex, or "Island of Reil," is hidden deep within the lateral sulcus of the brain. Subdivisions within the insula have been identified on the basis of cytoarchitectonics, sulcal landmarks, and connectivity. Depending on the parcellation technique used, the insula can be divided into anywhere between 2 and 13 distinct subdivisions. The insula subserves a wide variety of functions in humans ranging from sensory and affective processing to high-level cognition. Here, we provide a concise summary of known structural and functional features of the human insular cortex with a focus on lesion case studies and recent neuroimaging evidence for considerable functional heterogeneity of this brain region...
July 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28643698/phonon-limited-electronic-transport-in-pb
#9
Florian Rittweger, Nicki Frank Hinsche, Ingrid Mertig
We present a fully <i>ab initio</i> based scheme to compute electronic transport properties, i.e. the electrical conductivity σ and thermopower <i>S</i>, in the presence of electron-phonon interaction. We explicitly investigate the <b>k</b>-dependent structure of the Éliashberg spectral function, the coupling strength, the linewidth and the relaxation time τ. We obtain a state-dependent τ and show its necessity to reproduce the increased thermopower for temperatures below the Debye temperature, without accounting for the phonon-drag effect...
June 23, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28643660/glue-mesh-fixation-feasibility-tolerance-and-complication-assessment-results-24months-after-laparoscopic-sacrocolpopexy
#10
P Panel, F Soffray, E Roussillon, C Devins, M Brouziyne, S Abramowicz
AIM: This study aims to assess short- and mid-term feasibility, strength and tolerance of glue mesh fixation for laparoscopic sacrocolpopexy, as well as postoperative quality of sexual activity. PATIENTS AND METHODS: This original prospective clinical study was carried out in multiple university surgical centres between 2012 and 2013. Data were obtained during immediate postoperative hospitalisation, at 3 and at 24 months postoperatively. For a total of 42 patients subjected to laparoscopic sacrocolpopexy, bladder catheterization and hospitalisation times, pain score, early and late postoperative complications, prolapse staging according to POP-Q classification, and quality of sexual activity were registered...
April 2017: Journal of gynecology obstetrics and human reproduction
https://www.readbyqxmd.com/read/28643517/a-novel-strategy-for-comprehensive-profiling-and-identification-of-acidic-glycosphingolipids-using-ultra-high-performance-liquid-chromatography-coupled-with-quadrupole-time-of-flight-mass-spectrometry
#11
Ting Hu, Zhixin Jia, Jinlan Zhang
Acidic glycosphingolipids (AGSLs), which mainly consist of ganglioside and sulfatide moieties, are highly concentrated in the central nervous system. Comprehensive profiling of AGSLs has historically been challenging because of their high complexity and the lack of standards. In this paper, a novel strategy was developed to comprehensively profile AGSLs using ultra-high-performance liquid chromatography-quadrupole time of flight mass spectrometry (UPLC-Q-TOF-MS). Ganglioside isomers with different glycan chains such as GD1a/ GD1b were completely separated on a C18 column for the first time to our knowledge, facilitated by the addition of formic acid in the mobile phase...
June 23, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28643450/scpp-genes-and-their-relatives-in-gar-rapid-expansion-of-mineralization-genes-in-osteichthyans
#12
Kazuhiko Kawasaki, Masato Mikami, Mitsushiro Nakatomi, Ingo Braasch, Peter Batzel, John H Postlethwait, Akie Sato, Ichiro Sasagawa, Mikio Ishiyama
Gar is an actinopterygian that has bone, dentin, enameloid, and ganoin (enamel) in teeth and/or scales. Mineralization of these tissues involves genes encoding various secretory calcium-binding phosphoproteins (SCPPs) in osteichthyans, but no SCPP genes have been identified in chondrichthyans to date. In the gar genome, we identified 38 SCPP genes, seven of which encode "acidic-residue-rich" proteins and 31 encode "Pro/Gln (P/Q) rich" proteins. These gar SCPP genes constitute the largest known repertoire, including many newly identified P/Q-rich genes expressed in teeth and/or scales...
June 22, 2017: Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution
https://www.readbyqxmd.com/read/28643449/morphology-of-the-tongue-of-vermilingua-xenarthra-pilosa-and-evolutionary-considerations
#13
Daniel M Casali, Elisângela Martins-Santos, André L Q Santos, Flávia R Miranda, Germán A B Mahecha, Fernando A Perini
The tongue of anteaters (Xenarthra, Pilosa, Vermilingua) is a highly specialized for myrmecophagy. Here, we describe the topography and histology of the tongue, and compare it to that of other xenarthrans and other myrmecophagous eutherian mammals. The tongue of Vermilingua is long and slender, with an apical protuberance, which differs between Myrmecophagidae and Cyclopes didactylus. In the former, the rostral region is conical, and in the latter, it is dorsoventrally compressed, as observed in sloths. The tongue of Vermilingua has filiform and circumvallate papillae on the surface; foliate and fungiform papillae are absent...
June 22, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28643389/combined-molecular-modelling-and-3d-qsar-study-for-understanding-the-inhibition-of-nqo1-by-heterocyclic-quinone-derivatives
#14
Claudia Lopez-Lira, Jans H Alzate-Morales, Margot Paulino, Jaime Mella-Raipán, Cristian O Salas, Ricardo A Tapia, Jorge Soto-Delgado
A combination of three-dimensional quantitative structure-activity relationship (3D-QSAR), and molecular modelling methods were used to understand the potent inhibitory NAD(P)H:quinone oxidoreductase 1 (NQO1) activity of a set of 52 heterocyclic quinones. Molecular docking results indicated that some favourable interactions of key amino acid residues at the binding site of NQO1 with these quinones, would be responsible for an improvement of the NQO1 activity of these compounds. The main interactions involved are hydrogen bond of the amino group of residue Tyr128, π-stacking interactions with Phe106 and Phe178, and electrostatic interactions with flavin adenine dinucleotide (FADH) cofactor...
June 23, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28643298/a-comparison-of-clinical-efficacy-and-economic-value-in-basalin-and-lantus-treated-patients-with-type-2-diabetes-using-continuous-glucose-monitoring-system
#15
H Q Li, C F Lu, J Wang, G P Yin, R Sun, X H Xu, B L Liu, F F Li, T Jing, K O Lee, L Ye, J H Ma, X F Su
AIM: To determine the clinical non-inferiority of recombinant glargine-Basalin vs glargine-Lantus, in treatment of type 2 diabetes mellitus (T2DM) using continuous glucose monitoring system (CGMS). METHODS: One hundred patients with T2DM were recruited. They were either regularly taking Basalin (Basalin group) or Lantus (Lantus group) (n = 50 each). CGMS was employed to real-time monitor blood glucose profile for 4 days (from day 1 to day 5). To exclude the effect of patient background, the study design was to have a blinded crossover from glargine-Basalin to glargine-Lantus on day 3, and vice versa...
June 22, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28643290/does-the-eating-disorder-examination-questionnaire-global-subscale-adequately-predict-eating-disorder-psychopathology-in-the-daily-life-of-obese-adults
#16
Tyler B Mason, Kathryn E Smith, Ross D Crosby, Stephen A Wonderlich, Scott J Crow, Scott G Engel, Carol B Peterson
The eating disorder examination questionnaire (EDE-Q) Global score is a self-report measure of global eating disorder (ED) psychopathology. This study used ecological momentary assessment (EMA) to evaluate the ecological validity of EDE-Q Global scores among obese adults. Fifty obese adults completed the EDE-Q and 2 weeks of EMA ratings prior to initiating eating episodes and subsequently after eating episodes. EMA items assessed behavioral symptoms [i.e., loss of control (LOC) eating and overeating] and cognitive symptoms (i...
June 22, 2017: Eating and Weight Disorders: EWD
https://www.readbyqxmd.com/read/28643080/elaboration-of-the-reciprocal-engagement-model-of-genetic-counseling-practice-a-qualitative-investigation-of-goals-and-strategies
#17
Krista Redlinger-Grosse, Patricia McCarthy Veach, Bonnie S LeRoy, Heather Zierhut
As the genetic counseling field evolves, a comprehensive model of practice is critical. The Reciprocal-Engagement Model (REM) consists of 5 tenets and 17 goals. Lacking in the REM, however, are well-articulated counselor strategies and behaviors. The purpose of the present study was to further elaborate and provide supporting evidence for the REM by identifying and mapping genetic counseling strategies to the REM goals. A secondary, qualitative analysis was conducted on data from two prior studies: 1) focus group results of genetic counseling outcomes (Redlinger-Grosse et al...
June 22, 2017: Journal of Genetic Counseling
https://www.readbyqxmd.com/read/28643041/skull-fracture-with-effacement-of-the-superior-sagittal-sinus-following-drone-impact-a-case-report
#18
Lawrance K Chung, Yuri Cheung, Carlito Lagman, Nicholas Au Yong, Duncan Q McBride, Isaac Yang
BACKGROUND: The popularity of unmanned aerial vehicles, or drones, raises safety concerns as they become increasingly common for commercial, personal, and recreational use. Collisions between drones and people may result in serious injuries. CASE REPORT: A 13-year-old male presented with a comminuted depressed skull fracture causing effacement of the superior sagittal sinus secondary to a racing drone impact. The patient experienced a brief loss of consciousness and reported lower extremity numbness and weakness after the accident...
June 22, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28643007/the-role-of-lipofilling-after-breast-reconstruction-evaluation-of-outcomes-and-patient-satisfaction-with-breast-q
#19
Annalisa Cogliandro, Mauro Barone, Stefania Tenna, Marco Morelli Coppola, Paolo Persichetti
INTRODUCTION: The aim of this study was to measure patient satisfaction using the BREAST-Q reconstruction module in patients selected for lipofilling procedures after implant breast reconstructions. MATERIALS AND METHODS: Seventy patients who underwent breast reconstruction with or without delayed lipofilling were enrolled between 2011 and 2015, and they completed BREAST-Q surveys. We administered the questionnaire electronically 6 months and 1 year after surgery...
June 22, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28642619/understanding-the-unusual-response-to-high-pressure-in-kbe2bo3f2
#20
D H Yu, M Avdeev, D H Sun, L Q Huston, Thomas B Shiell, Q B Sun, T Lu, Q Gu, H Liu, J E Bradby, N Yie, Y Liu, J Y Wang, G J McIntyre
Strong anisotropic compression with pressure on the remarkable non-linear optical material KBe2BO3F2 has been observed with the linear compression coefficient along the c axis found to be about 40 times larger than that along the a axis. An unusual non-monotonic pressure response was observed for the a lattice parameter. The derived bulk modulus of 31 ± 1 GPa indicates that KBe2BO3F2 is a very soft oxide material yet with stable structure up to 45 GPa. A combination of high-pressure synchrotron powder X-ray diffraction, high-pressure Raman spectroscopy, and Density Functional Theory calculations points to the mechanism for the unusual pressure response being due to the competition between the K-F bond length and K-F-K bond angle and the coupling between the stretching and twisting vibration modes...
June 22, 2017: Scientific Reports
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