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https://www.readbyqxmd.com/read/28221382/mechanistic-insights-into-the-photoinduced-charge-carrier-dynamics-of-biobr-cds-nanosheet-heterojunctions-for-photovoltaic-application
#1
Huimin Jia, Beibei Zhang, Weiwei He, Yong Xiang, Zhi Zheng
The rational design of high performance hetero-structure photovoltaic devices requires a full understanding of the photoinduced charge transfer mechanism and kinetics at the interface of heterojunctions. In this paper, we intelligently fabricated p-BiOBr/n-CdS heterojunctions with perfect nanosheet arrays by using a facile successive ionic layer adsorption and reaction and chemical bath deposition methods at low temperature. A BiOBr/CdS heterojunction based solar cell has been fabricated which exhibited enhanced photovoltaic responses...
February 21, 2017: Nanoscale
https://www.readbyqxmd.com/read/28219106/reliability-and-validity-of-a-self-paced-cardiopulmonary-exercise-test-in-post-mi-patients
#2
Lauren Ann Jenkins, Alexis Mauger, Jane Fisher, James Hopker
A self-paced peak oxygen uptake (V̇O2peak) test (SPV) has been shown to produce higher V̇O2peak values compared to standard cardiopulmonary exercise tests (sCPET), but has not been tested on any clinical population. This study aimed to assess the reliability of the SPV in a healthy population (study 1), and the validity and reliability of the SPV in post-myocardial infarction (post-MI) patients (study 2). For study 1, 25 healthy participants completed 3 SPV's. For study 2, 28 post-MI patients completed one sCPET and 2 SPV's...
February 20, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28157631/enhanced-photocatalytic-degradation-of-phenol-and-photogenerated-charges-transfer-property-over-bioi-loaded-zno-composites
#3
Jingjing Jiang, Hongtao Wang, Xiaodong Chen, Shuo Li, Tengfeng Xie, Dejun Wang, Yanhong Lin
In this paper, a series of BiOI/ZnO photocatalysts containing various BiOI contents were prepared by a facile two-step synthetic method. The structure and crystal phase, morphology, surface element analysis, optical property of as-prepared samples are measured by X-ray diffraction (XRD), Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and UV-Vis diffuse reflectance spectrometry (DRS). BiOI/ZnO photocatalytic activities of the prepared photocatalysts were evaluated by photocatalytic degradation of phenol under simulated light irradiation...
May 15, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28146151/synthesis-of-novel-coox-decorated-ceo2-hollow-structures-with-an-enhanced-photocatalytic-water-oxidation-performance-under-visible-light-irradiation
#4
Siman Fang, Songsong Li, Lei Ge, Changcun Han, Ping Qiu, Yangqin Gao
Cobalt oxide decorated octahedral ceria hollow structures (CoOx/CeO2) with various contents of CoOx nanoparticles were prepared via a simple chemical impregnation method. The obtained samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), UV-Vis diffuse-reflectance spectroscopy (DRS), surface photovoltage spectroscopy (SPV) and transient photovoltage spectroscopy (TPV)...
February 1, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27996270/upconversion-triggered-charge-separation-in-polymer-semiconductors
#5
Yu Jin Jang, Eunah Kim, Seonghyeon Ahn, Kyungwha Chung, Jihyeon Kim, Heejun Kim, Huan Wang, Jiseok Lee, Dong-Wook Kim, Dong Ha Kim
Upconversion is a unique optical property that is driven by a sequential photon pumping and generation of higher energy photons in a consecutive manner. The efficiency improvement in photovoltaic devices can be achieved when upconverters are integrated since upconverters contribute to the generation of extra photons. Despite numerous experimental studies confirming the relationship, fundamental explanations for a real contribution of upconversion to photovoltaic efficiency are still in demand. In this respect, we suggest a new approach to visualize the upconversion event in terms of surface photovoltage (SPV) by virtue of Kelvin probe force microscopy (KPFM)...
January 19, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/27942980/age-differences-in-physiological-responses-to-self-paced-and-incremental-formula-see-text-testing
#6
RANDOMIZED CONTROLLED TRIAL
Lauren A Jenkins, Alexis R Mauger, James G Hopker
PURPOSE: A self-paced maximal exercise protocol has demonstrated higher [Formula: see text] values when compared against traditional tests. The aim was to compare physiological responses to this self-paced [Formula: see text] protocol (SPV) in comparison to a traditional ramp [Formula: see text] (RAMP) protocol in young (18-30 years) and old (50-75 years) participants. METHODS: Forty-four participants (22 young; 22 old) completed both protocols in a randomised, counter-balanced, crossover design...
January 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/27922194/pharmacodynamic-response-profiles-of-anxiolytic-and-sedative-drugs
#7
Xia Chen, Freerk Broeyer, Marieke de Kam, Joke Baas, Adam Cohen, Joop van Gerven
INTRODUCTION: Centrally-acting acutely anxiolytic drugs, like benzodiazepines, barbiturates and gabapentinoids, affect various central nervous system (CNS) functions, which reflect not only their anxiolytic effects but also neuropsychological side-effects. To validate the pharmacodynamic biomarkers for GABA-ergic anxiolytics, this study determined the pharmacodynamics of two anxiolytics and a non-anxiolytic control and linked them to their anxiolytic and sedative effects, during an anxiety-challenge study day...
December 6, 2016: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27864781/isolation-identification-and-high-throughput-screening-of-neutral-lipid-producing-indigenous-microalgae-from-south-african-aquatic-habitats
#8
S T Gumbi, B M Majeke, A O Olaniran, T Mutanda
Exploring indigenous microalgae capable of producing significant amounts of neutral lipids through high-throughput screening is crucial for sustainable biodiesel production. In this study, 31 indigenous microalgal strains were isolated from diverse aquatic habitats in KwaZulu-Natal, South Africa. Eight superior lipid-producing strains were selected for further analysis, based on Nile red fluorescence microscopy screening. The microalgal isolates were identified to belong to the genera Chlorella, Neochloris and Chlamydomonas via morpho-taxonomic and molecular approach by 18S rRNA gene sequencing...
November 18, 2016: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/27831573/electron-acceptor-of-ni-decorated-porous-carbon-nitride-applied-in-photocatalytic-hydrogen-production
#9
Lingling Bi, Dedong Meng, Qijing Bu, Yanhong Lin, Dejun Wang, Tengfeng Xie
Nickel, a non-noble metal, is one of the most promising candidates for photocatalysis because it is inexpensive and an earth-abundant metal. Herein, Ni/CM-C3N4 nanocomposites with Ni as a cocatalyst were synthesized by a simple solvothermal method. Field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD) confirmed that Ni nanoparticles were loaded onto the surface of CM-C3N4. The prepared Ni/CM-C3N4 nanocomposites exhibited an enhanced hydrogen evolution activity...
November 10, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27821973/abnormal-bias-in-subjective-vertical-perception-in-a-post-stroke-astasia-patient
#10
Keisuke Tani, Akiyoshi Matsugi, Shintaro Uehara, Daisuke Kimura
[Purpose] Post-stroke astasia is an inability to stand without external support despite having sufficient muscle strength. However, the dysfunction underlying astasia is unclear. We tested the hypothesis that astasia is the result of an abnormal bias in vertical perception, especially subjective postural vertical (SPV), mediated by somatosensory inputs. [Subjects and Methods] A patient with a right posterolateral thalamus hemorrhage had a tendency to fall toward the contralesional side during standing after 8 weeks of treatment...
October 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27800482/stabilization-of-the-virulence-plasmid-pslt-of-salmonella-typhimurium-by-three-maintenance-systems-and-its-evaluation-by-using-a-new-stability-test
#11
Damián Lobato-Márquez, Laura Molina-García, Inma Moreno-Córdoba, Francisco García-Del Portillo, Ramón Díaz-Orejas
Certain Salmonella enterica serovars belonging to subspecies I carry low-copy-number virulence plasmids of variable size (50-90 kb). All of these plasmids share the spv operon, which is important for systemic infection. Virulence plasmids are present at low copy numbers. Few copies reduce metabolic burden but suppose a risk of plasmid loss during bacterial division. This drawback is counterbalanced by maintenance modules that ensure plasmid stability, including partition systems and toxin-antitoxin (TA) loci...
2016: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/27780297/pharmacokinetics-and-pharmacodynamics-of-a-new-highly-concentrated-intranasal-midazolam-formulation-for-conscious-sedation
#12
Lenneke Schrier, Rob Zuiker, Frans W H M Merkus, Erica S Klaassen, Zheng Guan, Bert Tuk, Joop M A van Gerven, Ronald van der Geest, Geert Jan Groeneveld
AIM: To evaluate the pharmacokinetics, pharmacodynamics, nasal tolerance and effects on sedation of a highly concentrated aqueous intranasal midazolam formulation (Nazolam) and to compare these to intravenous midazolam. METHODS: In this four-way crossover, double-blind, double-dummy, randomized, placebo-controlled study, 16 subjects received 2.5 mg Nazolam, 5.0 mg Nazolam, 2.5 mg intravenous midazolam or placebo on different occasions. Pharmacokinetics of midazolam and α-hydroxy-midazolam were characterized and related to outcome variables for sedation (saccadic peak velocity, the Bond and Lader visual analogue scale for sedation, the simple reaction time task and the observer's assessment of alertness/sedation)...
October 25, 2016: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27695992/analysis-of-the-blood-supply-to-the-post-fracture-edentulous-mandible-study-by-colour-doppler-sonography
#13
Júlio Cezar M A Mancini, Márcio Ricardo Taveira Garcia, Ilka Regina Souza de Oliveira, Ronaldo Rodrigues de Freitas, João Gualberto C Luz
PURPOSE: This study assessed the arterial blood supply to the mandible of edentulous patients treated for mandibular fractures using colour Doppler ultrasound. METHODS: The blood supply of edentulous patients surgically treated for mandibular fractures (group A) and edentulous fracture-free individuals (group B) was assessed. Only the fractured sides were evaluated in the first group (N = 17), whereas each side was evaluated in the second group (N = 20)...
December 2016: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27679549/pancreaticoduodenectomy-for-ductal-adenocarcinoma-of-the-pancreatic-head-with-venous-resection
#14
Vojko Flis, Stojan Potrc, Nina Kobilica, Arpad Ivanecz
BACKGROUND: Recent reports have shown that patients with vascular tumour invasion who undergo concurrent vascular resection can achieve long-term survival rates equivalent to those without vascular involvement requiring pancreaticoduodenectomy alone. There is no consensus about which patients benefit from the portal-superior mesenteric vein resection and there is no consensus about the best surgical technique of vessel reconstruction (resection with or without graft reconstruction). As published series are small the aim of this study was to evaluate our experience in pancreatectomies with en bloc vascular resection and reconstruction of vessels...
September 1, 2016: Radiology and Oncology
https://www.readbyqxmd.com/read/27666190/salmonella-spv-locus-suppresses-host-innate-immune-responses-to-bacterial-infection
#15
Shu-Yan Wu, Li-Dan Wang, Jin-Ling Li, Guang-Mei Xu, Mei-Ling He, Yuan-Yuan Li, Rui Huang
Salmonella enterica serovar typhimurium (S. typhimurium) is globally distributed and causes massive morbidity and mortality in humans and animals. S. typhimurium carries Salmonella plasmid virulence (spv) locus, which is highly conserved and closely related to bacterial pathogenicity, while its exact role in host immune responses during infection remains to be elucidated. To counteract the invaders, the host has evolved numerous strategies, among which the innate immunity and autophagy act as the first defense...
November 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27620878/revised-ct-angiography-venous-score-with-consideration-of-infratentorial-circulation-value-for-diagnosing-brain-death
#16
Antoine J Marchand, Philippe Seguin, Yannick Malledant, Marion Taleb, Hélène Raoult, Jean Yves Gauvrit
BACKGROUND: Computed tomography angiography (CTA) is largely performed in European countries as an ancillary test for diagnosing brain death. However, CTA suffers from a lack of sensitivity, especially in patients who have previously undergone decompressive craniectomy. The aim of this study was to assess the performance of a revised four-point venous CTA score, including non-opacification of the infratentorial venous circulation, for diagnosing brain death. METHODS: A preliminary study of 43 control patients with normal CTAs confirmed that the infratentorial superior petrosal vein (SPV) was consistently visible...
December 2016: Annals of Intensive Care
https://www.readbyqxmd.com/read/27601782/the-effect-of-trial-familiarisation-on-the-validity-and-reproducibility-of-a-field-based-self-paced-vo2max-test
#17
W Lim, D Lambrick, A R Mauger, B Woolley, J Faulkner
The self-paced maximal oxygen uptake (VO2max) test (SPV), which is based on the Borg 6-20 Ratings of Perceived Exertion (RPE) scale, allows participants to self-regulate their exercise intensity during a closed-loop incremental maximal exercise test. As previous research has assessed the utility of the SPV test within laboratory conditions, the purpose to this study was to assess the effect of trial familiarisation on the validity and reproducibility of a field-based, SPV test. In a cross-sectional study, fifteen men completed one laboratory-based graded exercise test (GXT) and three field-based SPV tests...
September 2016: Biology of Sport
https://www.readbyqxmd.com/read/27515038/can-a-central-blood-volume-deficit-be-detected-by-systolic-pressure-variation-during-spontaneous-breathing
#18
Michael Dahl, Chris Hayes, Bodil Steen Rasmussen, Anders Larsson, Niels H Secher
BACKGROUND: Whether during spontaneous breathing arterial pressure variations (APV) can detect a volume deficit is not established. We hypothesized that amplification of intra-thoracic pressure oscillations by breathing through resistors would enhance APV to allow identification of a reduced cardiac output (CO). This study tested that hypothesis in healthy volunteers exposed to central hypovolemia by head-up tilt. METHODS: Thirteen healthy volunteers were exposed to central hypovolemia by 45° head-up tilt while breathing through a facemask with 7...
August 11, 2016: BMC Anesthesiology
https://www.readbyqxmd.com/read/27386107/rheological-baking-and-sensory-properties-of-composite-bread-dough-with-breadfruit-artocarpus-communis-forst-and-wheat-flours
#19
Adegoke H Bakare, Oluwatooyin F Osundahunsi, Joseph O Olusanya
The rheological (Pasting, farinograph, and alveograph) properties of wheat flour (WF) replaced with breadfruit four (05-40%) was analyzed. Baking and sensory qualities of the resulting bread were evaluated. Differences in baking properties of loaves produced under laboratory and industrial conditions were analyzed with t-test, whereas ANOVA was used for other analyses. Peak and final viscosities in the composite blends (CB) ranged from 109.20 to 114.06 RVU and 111.86 to 134.40 RVU, respectively. Dough stability decreased from 9...
July 2016: Food Science & Nutrition
https://www.readbyqxmd.com/read/27352973/salmonella-infection-in-healthy-pet-reptiles-bacteriological-isolation-and-study-of-some-pathogenic-characters
#20
Fabrizio Bertelloni, Marianne Chemaly, Domenico Cerri, Françoise Le Gall, Valentina Virginia Ebani
The fecal samples from 213 captive reptiles were examined, and 29 (13.61%) Salmonella enterica isolates were detected: 14/62 (22.58%) from chelonians, 14/135 (10.37%) from saurians, and 1/16 (6.25%) from ophidians. The isolates were distributed among 14 different serotypes: Miami, Ebrie, Hermannsweder, Tiergarten, Tornov, Pomona, Poona, Goteborg, Abaetetube, Nyanza, Kumasi, Typhimurium, 50:b:z6, 9,12:z29:1,5, and a non-motile serotype with antigenic formula 1,4,[5],12:-:-. Salmonella typhimurium and 50:b:z6 isolates showed the spv plasmid virulence genes, responsible of the capability to induce extra-intestinal infections...
June 2016: Acta Microbiologica et Immunologica Hungarica
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