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https://www.readbyqxmd.com/read/28822408/-the-application-of-artificial-neural-network-on-the-assessment-of-lexical-tone-production-of-pediatric-cochlear-implant-users
#1
Y T Mao, Z M Chen, L Xu
Objective: The present study was carried out to explore the tone production ability of the Mandarin-speaking children with cochlear implants (CI) by using an artificial neural network model and to examine the potential contributing factors underlining their tone production performance. The results of this study might provide useful guidelines for post-operative rehabilitation processes of pediatric CI users. Methods: Two hundred and seventy-eight prelingually deafened children who received unilateral CI participated in this study...
August 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28817348/palliative-care-consults-in-u-s-nursing-homes-not-just-for-the-dying
#2
Julie C Lima, Susan C Miller
BACKGROUND: Little is known about nursing home (NH) residents who receive palliative care (PC) consults in the United States. OBJECTIVE: Separately by short versus long (≥90 days) stays, to describe NH residents with PC consults compared to a prevalent NH sample. DESIGN: Descriptive longitudinal study. SETTING/SUBJECTS: NH residents in 2008-2010 in 54 NHs. MEASUREMENTS: Resident characteristics came from merged Medicare and NH data from the Centers for Medicare and Medicaid Services and consult information from two PC organizations that were the sole PC consult providers in the study NHs...
August 17, 2017: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/28815946/model-catalytic-studies-of-novel-liquid-organic-hydrogen-carriers-indole-indoline-and-octahydroindole-on-pt-111
#3
Matthias Schwarz, Philipp Bachmann, Thais Nascimento Silva, Susanne Mohr, Marlene Scheuermeyer, Florian Späth, Udo Bauer, Fabian Düll, Johann Steinhauer, Chantal Hohner, Tibor Döpper, Heshmat Noei, Andreas Stierle, Christian Papp, Hans-Peter Steinrück, Peter Wasserscheid, Andreas Görling, Jörg Libuda
Indole derivatives were recently proposed as potential Liquid Organic Hydrogen Carriers (LOHC) for storage of renewable energies. In this work, we have investigated the adsorption, dehydrogenation and degradation mechanisms in the indole/indoline/octahydroindole system on Pt(111). We have combined infrared reflection absorption spectroscopy (IRAS), X-ray photoelectron spectroscopy (XPS) and density functional (DF) calculations. Indole multilayers show a crystallization transition at 200 K, in which the molecules adopt a strongly tilted orientation, before the multilayer desorbs at 220 K...
August 16, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28815829/reagent-free-c-h-n-h-cross-coupling-regioselective-synthesis-of-n-heteroaromatics-from-biaryl-aldehydes-and-nh%C3%A2
#4
Huai-Bo Zhao, Zhan-Jiang Liu, Jinshuai Song, Hai-Chao Xu
An unprecedented synthesis of N-heteroaromatics from biaryl aldehydes and NH3 through reagent-free C-H/N-H cross-coupling has been developed. The electrosynthesis uses NH3 as an inexpensive and atom-economic nitrogen donor, requires no oxidizing agents, and allows efficient and regioselective access to a wide range of phenanthridines and structurally related polycyclic N-heteroaromatic products.
August 16, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28815648/direct-uptake-of-hco3-in-the-marine-angiosperm-posidonia-oceanica-l-delile-driven-by-a-plasma-membrane-h-economy
#5
Lourdes Rubio, Delia García, María J García-Sánchez, F Xavier Niell, Hubert H Felle, José A Fernández
Seagrasses access HCO3(-) for photosynthesis by two mechanisms, apoplastic carbonic anhydrase-mediated dehydration of HCO3(-) to CO2 , and direct HCO3(-) uptake. Here we have studied plasma membrane energization and the mechanism for HCO3(-) import in Posidonia oceanica. Classical electrophysiology and ion selective microelectrodes were used to measure the membrane potential, cytosolic pH and the cytosolic concentrations of Na(+) and Cl(-) upon the addition of HCO3(-) . The photosynthetic response to HCO3(-) and to inhibitors was also measured...
August 16, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28813166/are-inner-city-children-with-asthma-receiving-specialty-care-as-recommended-in-national-asthma-guidelines
#6
Karen L Warman, Ellen J Silver
OBJECTIVE: To examine whether children with asthma in an urban healthcare network are receiving asthma specialty care, and which factors, if any, are associated with receipt of this care, including: child's racial/ethnic group, age, socio-economic status (SES), insurance, and/or acute care utilization. METHODS: This study is a retrospective cohort study of children ages 7- 17 years old who received primary care in an urban medical center in 2012 and had a primary or secondary ICD9 code for asthma...
August 16, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28812984/modelling-the-effects-of-quinidine-disopyramide-and-e-4031-on-short-qt-syndrome-variant-3-in-the-human-ventricles
#7
Cunjin Luo, Kuanquan Wang, Henggui Zhang
Short QT syndrome (SQTS) is an inherited cardiac channelopathy, but at present little information is available on its pharmacological treatment. SQT3 variant (linked to the inward rectifier potassium current IK1) of SQTS, results from a gain-of-function mutation (Kir2.1 D172N) in the KCNJ2-encoded channels, which is associated with ventricular fibrillation (VF). Using biophysically-detailed human ventricular computer models, this study investigated the potential effects of quinidine, disopyramide, and E-4031 on SQT3...
August 16, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28809801/a-unique-and-simple-approach-to-improve-sensitivity-in-15-n-nmr-relaxation-measurements-for-nh%C3%A2-%C3%A2-%C2%BA-groups-application-to-a-protein-dna-complex
#8
Dan Nguyen, Ganesh L R Lokesh, David E Volk, Junji Iwahara
NMR spectroscopy is a powerful tool for research on protein dynamics. In the past decade, there has been significant progress in the development of NMR methods for studying charged side chains. In particular, NMR methods for lysine side-chain NH₃⁺ groups have been proven to be powerful for investigating the dynamics of hydrogen bonds or ion pairs that play important roles in biological processes. However, relatively low sensitivity has been a major practical issue in NMR experiments on NH₃⁺ groups. In this paper, we present a unique and simple approach to improve sensitivity in (15)N relaxation measurements for NH₃⁺ groups...
August 15, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28805928/effects-of-dietary-fish-oil-supplementation-on-performance-meat-quality-and-cecal-fermentation-of-growing-rabbits
#9
M Rodríguez, M D Carro, V Valiente, N Formoso-Rafferty, P G Rebollar
The objective of this study was to investigate the effect of dietary supplementation with fish oil on growth performance (during all fatening period), carcass characteristics and fatty acid (FA) profile of muscle and fat tissues (at slaughter), as well as cecal fermentation and ileal mucosa morphology of growing rabbits (at 30, 45, and 60 d of age). Two isonitrogenous and isoenergetic diets, only differing in their fat source, were formulated and provided each to 24 does (12 per diet) and their offspring during pregnancy and lactation...
August 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28805887/characterizing-ammonia-emissions-from-horses-fed-different-crude-protein-concentrations
#10
J Weir, H Li, L K Warren, E Macon, C Wickens
Evaluating impact of animal agriculture on air quality has been the focus of recent research. Ammonia (NH) volatilization occurs when undigested protein in feces and urea in urine is broken down by bacteria and enzymes. Information regarding NH emission from equine facilities is limited, and effects of CP intake on NH emissions have not been investigated. Nine mature geldings were used in a 3 × 3 replicated Latin square design study to determine effects of dietary CP on potential NH losses from feces and urine...
August 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28803784/race-ethnic-disparities-in-cardiometabolic-risk-profiles-among-stroke-survivors-with-undiagnosed-diabetes-and-prediabetes-in-the-united-states
#11
Okkyung Kim, Bruce Ovbiagele, Natalie Valle, Daniela Markovic, Amytis Towfighi
BACKGROUND AND PURPOSE: Up to 25% of the U.S. population has undiagnosed diabetes. Diabetes and stroke both disproportionately afflict race/ethnic minorities. We assessed race/ethnic differences in the prevalence of undiagnosed diabetes, prediabetes, and cardiometabolic risk profiles among stroke survivors in the United States. METHODS: The prevalence of diabetes and prediabetes among adults (≥20 years) with a self-reported history of stroke was assessed using the National Health and Nutrition Examination Surveys (NHANES) from 1999 to 2010...
August 10, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28801884/identification-and-partial-structural-characterization-of-mass-isolated-valsartan-and-its-metabolite-with-messenger-tagging-vibrational-spectroscopy
#12
Olga Gorlova, Sean M Colvin, Antonio Brathwaite, Fabian S Menges, Stephanie M Craig, Scott J Miller, Mark A Johnson
Recent advances in the coupling of vibrational spectroscopy with mass spectrometry create new opportunities for the structural characterization of metabolites with great sensitivity. Previous studies have demonstrated this scheme on 300 K ions using very high power free electron lasers in the fingerprint region of the infrared. Here we extend the scope of this approach to a single investigator scale as well as extend the spectral range to include the OH stretching fundamentals. This is accomplished by detecting the IR absorptions in a linear action regime by photodissociation of weakly bound N2 molecules, which are attached to the target ions in a cryogenically cooled, rf ion trap...
August 11, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28801098/synthesis-and-in-vitro-evaluation-of-ca-2-channel-blockers-1-4-dihydropyridines-analogues-against-trypanosoma-cruzi-and-leishmania-amazonensis-sar-analysis
#13
Luiz A E Pollo, Milene H de Moraes, Júlia Cisilotto, Tânia B Creczynski-Pasa, Maique W Biavatti, Mario Steindel, Louis P Sandjo
Drugs containing the1,4-dihydropyridine (DHP) core have recently attracted attention concerning their antiparasitic effect against various species of Leishmania and Trypanosoma. This approach named drugs repositioning led to interesting results, which have prompted us to prepare 21 DHP's analogues. The 1,4-DHP scaffold was decorated with different function groups at tree points including the nitrogen atom (NH and N-phenyl), the aryl group attached to C-4 (various substituted aryl residues) and the carbon atoms 2 and 6 (bearing Ph or Me groups)...
August 8, 2017: Parasitology International
https://www.readbyqxmd.com/read/28800535/computational-investigation-of-the-nitrosation-mechanism-of-piperazine-in-co2-capture
#14
Qi Yu, Pan Wang, Fangfang Ma, Hong-Bin Xie, Ning He, Jingwen Chen
Quantum chemistry calculations and kinetic modeling were performed to investigate the nitrosation mechanism and kinetics of diamine piperazine (PZ), an alternative solvent for widely used monoethanolamine in postcombustion CO2 capture (PCCC), by two typical nitrosating agents, NO2(-) and N2O3, in the presence of CO2. Various PZ species and nitrosating agents formed by the reactions of PZ, NO2(-), and N2O3 with CO2 were considered. The results indicated that the reactions of PZ species having NH group with N2O3 contribute the most to the formation of nitrosamines in the absorber unit of PCCC and follow a novel three-step nitrosation mechanism, which is initiated by the formation of a charge-transfer complex...
August 4, 2017: Chemosphere
https://www.readbyqxmd.com/read/28800534/molecular-understanding-of-the-interaction-of-methyl-hydrogen-sulfate-with-ammonia-dimethylamine-water
#15
Xia Sheng, Hailiang Zhao, Lin Du
Theoretical calculations at the B3LYP-D3/aug-cc-pVTZ (aug-cc-pV(T+d)Z for sulfur) level were used to investigate the contribution of methyl hydrogen sulfate (MHS) to new particle formation with the common atmospheric aerosol nucleation precursors including water (H2O), ammonia (NH3), and dimethylamine (DMA). A typical characteristic feature of the MHS-containing complexes is the formation of six- or eight-membered ring structures via SOH⋯O (MHS donor), OH⋯O/N (H2O donor) and NH⋯O/N (NH3/DMA donor). The stability of the complexes was evaluated based on the calculated binding energies...
August 4, 2017: Chemosphere
https://www.readbyqxmd.com/read/28800372/alveolar-and-postalveolar-voiceless-fricative-and-affricate-productions-of-spanish-english-bilingual-children-with-cochlear-implants
#16
Fangfang Li, Ferenc Bunta, J Bruce Tomblin
Purpose: This study investigates the production of voiceless alveolar and postalveolar fricatives and affricates by bilingual and monolingual children with hearing loss who use cochlear implants (CIs) and their peers with normal hearing (NH). Method: Fifty-four children participated in our study, including 12 Spanish-English bilingual CI users (M = 6;0 [years;months]), 12 monolingual English-speaking children with CIs (M = 6;1), 20 bilingual children with NH (M = 6;5), and 10 monolingual English-speaking children with NH (M = 5;10)...
August 11, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28799983/discrimination-of-voice-pitch-and-vocal-tract-length-in-cochlear-implant-users
#17
Etienne Gaudrain, Deniz Başkent
OBJECTIVES: When listening to two competing speakers, normal-hearing (NH) listeners can take advantage of voice differences between the speakers. Users of cochlear implants (CIs) have difficulty in perceiving speech on speech. Previous literature has indicated sensitivity to voice pitch (related to fundamental frequency, F0) to be poor among implant users, while sensitivity to vocal-tract length (VTL; related to the height of the speaker and formant frequencies), the other principal voice characteristic, has not been directly investigated in CIs...
August 9, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28797942/high-calcium-fly-ash-geopolymer-stabilized-lateritic-soil-and-granulated-blast-furnace-slag-blends-as-a-pavement-base-material
#18
Itthikorn Phummiphan, Suksun Horpibulsuk, Runglawan Rachan, Arul Arulrajah, Shui-Long Shen, Prinya Chindaprasirt
Granulated Blast Furnace Slag (GBFS) was used as a replacement material in marginal lateritic soil (LS) while class C Fly Ash (FA) was used as a precursor for the geopolymerization process to develop a low-carbon pavement base material at ambient temperature. Unconfined Compression Strength (UCS) tests were performed to investigate the strength development of geopolymer stabilized LS/GBFS blends. Scanning Electron Microscopy and X-ray Diffraction analysis were undertaken to examine the role of the various influencing factors on UCS development...
July 31, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28797841/a-cr-vi-selective-probe-based-on-a-quinoline-amide-calix-4-arene
#19
Juliane F Ferreira, Izilda A Bagatin
A new quinoline-amide calix[4]arene 3-receptor for detection of hazardous anions and cations have been synthesized. The 3-receptor was examined for its sensing properties towards several different anions (Cr2O7(2-), SCN(-), F(-), Cl(-), NO3) and metal ions (Hg(2+), Cd(2+), Ag(+)) by UV-vis and fluorescence spectroscopies. It was detected that the 3-receptor has only sensing ability for Cr2O7(2-) and Hg(2+) ions, resulting in the association constants higher for Cr2O7(2-) than to the Hg(2+) ions. High selectivity towards Cr2O7(2-) were also observed by fluorescence measurement among other ions (F(-), Cl(-), SCN(-), Hg(2+), Cd(2+), Ag(+)) with a low limit of detection (7...
August 3, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28797590/antibiotic-stewardship-programs-in-nursing-homes-a-systematic-review
#20
REVIEW
Diana Feldstein, Philip D Sloane, Cynthia Feltner
INTRODUCTION: Antibiotic stewardship programs (ASPs) are coordinated interventions promoting the appropriate use of antibiotics to improve patient outcomes and reduce microbial resistance. These programs are now mandated in nursing homes (NHs) but it is unclear if these programs improve resident outcomes. This systematic review evaluated the current evidence regarding outcomes of ASPs in the NH. METHODS: PubMed, CINAHL, EMBASE, and the Cochrane Library were systematically searched for intervention trials of ASPs performed in NHs that evaluated final health outcomes (mortality and Clostridium difficile infections), healthcare utilization outcomes (emergency department visits and hospital admissions) and intermediate health outcomes (number of antibiotics prescribed, adherence to recommended guidelines)...
August 7, 2017: Journal of the American Medical Directors Association
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