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https://www.readbyqxmd.com/read/28340524/controlled-hydrothermal-synthesis-and-photoluminescence-of-nanocrystalline-znga2o4-cr-3-monospheres
#1
Tian Luan, Jinhan Liu, Xiaoxue Yuan, Ji-Guang Li
The hydrothermal synthesis of nanocrystalline ZnGa2O4:Cr(3+) (ZGC) red phosphor monospheres was accomplished in this work, and the effects of system pH, reactant content, reaction time, and citrate anions (Cit(3-)) on the phase and morphology evolution of the product were systematically studied. Under the optimized conditions of Cit(3-)/M = 1.0 molar ratio (M = total cations), pH = 5.0, and 0.2 mmol of Zn(2+), well-dispersed ZGC monospheres with an average diameter of ~454 ± 56 nm (average crystallite size ~15 nm) were successfully obtained via hydrothermal reaction at 180 °C for 18 h...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28339546/multicentre-safety-of-adding-focal-impulse-and-rotor-modulation-firm-to-conventional-ablation-for-atrial-fibrillation
#2
David E Krummen, Tina Baykaner, Amir A Schricker, Christopher A B Kowalewski, Vijay Swarup, John M Miller, Gery F Tomassoni, Shirley Park, Mohan N Viswanathan, Paul J Wang, Sanjiv M Narayan
Aims: Focal Impulse and Rotor Modulation (FIRM) uses 64-electrode basket catheters to identify atrial fibrillation (AF)-sustaining sites for ablation, with promising results in many studies. Accordingly, new basket designs are being tested by several groups. We set out to determine the procedural safety of adding basket mapping and map-guided ablation to conventional pulmonary vein isolation (PVI). Methods and results: We collected 30 day procedural safety data in five US centres for consecutive patients undergoing FIRM plus PVI (FIRM-PVI) compared with contemporaneous controls undergoing PVI without FIRM...
December 22, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28339228/universal-work-fluctuations-during-shortcuts-to-adiabaticity-by-counterdiabatic-driving
#3
Ken Funo, Jing-Ning Zhang, Cyril Chatou, Kihwan Kim, Masahito Ueda, Adolfo Del Campo
Counterdiabatic driving (CD) exploits auxiliary control fields to tailor the nonequilibrium dynamics of a quantum system, making possible the suppression of dissipated work in finite-time thermodynamics and the engineering of optimal thermal machines with no friction. We show that while the mean work done by the auxiliary controls vanishes, CD leads to a broadening of the work distribution. We derive a fundamental inequality that relates nonequilibrium work fluctuations to the operation time and quantifies the thermodynamic cost of CD in both critical and noncritical systems...
March 10, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28335458/in-vitro-antioxidant-activity-and-in-vivo-anti-fatigue-effect-of-sea-horse-hippocampus-peptides
#4
Zebin Guo, Duanquan Lin, Juanjuan Guo, Yi Zhang, Baodong Zheng
This study investigated changes the in vitro antioxidant activity of Hippocampus polypeptides during enzymatic hydrolysis, including the effects of enzyme species, enzyme concentration, material-liquid ratio, hydrolysis time, pH, and temperature of the reaction system. Its in vivo anti-fatigue activity was also studied. Hippocampus peptide prepared by papain digestion exhibited the highest 1,1-diphenyl-2-picryl-hydrazyl free radical scavenging rate (71.89% ± 1.50%) and strong hydroxyl radical scavenging rate (75...
March 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28335433/evaluation-and-adaptation-of-a-laboratory-based-cdna-library-preparation-protocol-for-retrospective-sequencing-of-archived-micrornas-from-up-to-35-year-old-clinical-ffpe-specimens
#5
Olivier Loudig, Tao Wang, Kenny Ye, Juan Lin, Yihong Wang, Andrew Ramnauth, Christina Liu, Azadeh Stark, Dhananjay Chitale, Robert Greenlee, Deborah Multerer, Stacey Honda, Yihe Daida, Heather Spencer Feigelson, Andrew Glass, Fergus J Couch, Thomas Rohan, Iddo Z Ben-Dov
Formalin-fixed paraffin-embedded (FFPE) specimens, when used in conjunction with patient clinical data history, represent an invaluable resource for molecular studies of cancer. Even though nucleic acids extracted from archived FFPE tissues are degraded, their molecular analysis has become possible. In this study, we optimized a laboratory-based next-generation sequencing barcoded cDNA library preparation protocol for analysis of small RNAs recovered from archived FFPE tissues. Using matched fresh and FFPE specimens, we evaluated the robustness and reproducibility of our optimized approach, as well as its applicability to archived clinical specimens stored for up to 35 years...
March 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28334842/enhanced-hplc-dad-method-for-fast-determination-of-quercetin-3-o-%C3%AE-d-glucoside-in-extracts-and-polyherbal-formulations-containing-azadirachta-indica-optimization-and-validation
#6
Sonal Desai, Pratima Tatke, Satish Gabhe
Azadirachta indica has been used for its medicinal properties since time immemorial. Herbal medicines which are prepared using this medicinal tree are utilized to treat various diseases and disorders. No reports are available for marker-based standardization of these herbal medicines prepared from leaves of A. indica. Also existing HPLC methods for determination quercetin-3-O-β-d-glucoside are time consuming. There is an obvious need for development of new HPLC method for quantification of quercetin-3-O-β-d-glucoside which is fast enough to carry out analysis in stipulated time period...
March 18, 2017: Journal of Chromatographic Science
https://www.readbyqxmd.com/read/28334433/dietary-interventions-for-recurrent-abdominal-pain-in-childhood
#7
REVIEW
Tamsin V Newlove-Delgado, Alice E Martin, Rebecca A Abbott, Alison Bethel, Joanna Thompson-Coon, Rebecca Whear, Stuart Logan
BACKGROUND: This is an update of the original Cochrane review, last published in 2009 (Huertas-Ceballos 2009). Recurrent abdominal pain (RAP), including children with irritable bowel syndrome, is a common problem affecting between 4% and 25% of school-aged children. For the majority of such children, no organic cause for their pain can be found on physical examination or investigation. Many dietary inventions have been suggested to improve the symptoms of RAP. These may involve either excluding ingredients from the diet or adding supplements such as fibre or probiotics...
March 23, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28334329/metabolomics-of-pichia-pastoris-impact-of-buffering-conditions-on-the-kinetics-and-nature-of-metabolite-loss-during-quenching
#8
Matthias Mattanovich, Hannes Rußmayer, Theresa Scharl-Hirsch, Verena Puxbaum, Jonas Burgard, Diethard Mattanovich, Stephan Hann
Mass spectrometry based metabolomic profiling is a powerful strategy to quantify the concentrations of numerous primary metabolites in parallel. To avoid distortion of metabolite concentrations, quenching is applied to stop the cellular metabolism instantly. For yeasts, cold methanol quenching is accepted to be the most suitable method to stop metabolism, while keeping the cells intact for separation from the supernatant. During this treatment, metabolite loss may occur while the cells are suspended in the quenching solution...
March 15, 2017: FEMS Yeast Research
https://www.readbyqxmd.com/read/28333972/evaluation-of-high-resolution-in-vivo-mri-for-longitudinal-analysis-of-endochondral-fracture-healing-in-mice
#9
Melanie Haffner-Luntzer, Fabian Müller-Graf, Romano Matthys, Yvonne Hägele, Verena Fischer, René Jonas, Alireza Abaei, Florian Gebhard, Volker Rasche, Anita Ignatius
Mice are extensively used for experimental bone-healing studies. However, there are few established nondestructive in vivo techniques for longitudinal fracture-healing analysis in mice, including in vivo micro-computed tomography (μCT) and radiography. Importantly, none of the established methods can discriminate between non-mineralized fibrous tissue and cartilage in the soft fracture callus. Therefore, the objective was to establish high-resolution in vivo magnetic resonance imaging (MRI) for the longitudinal assessment of soft callus formation during bone healing in mice...
2017: PloS One
https://www.readbyqxmd.com/read/28333964/optimizing-ultrasound-molecular-imaging-of-secreted-frizzled-related-protein-2-expression-in-angiosarcoma
#10
James K Tsuruta, Nicholas P Schaub, Juan D Rojas, Jason Streeter, Nancy Klauber-DeMore, Paul Dayton
Secreted frizzled related protein 2 (SFRP2) is a tumor endothelial marker expressed in angiosarcoma. Previously, we showed ultrasound molecular imaging with SFRP2-targeted contrast increased average video pixel intensity (VI) of angiosarcoma vessels by 2.2 ± 0.6 VI versus streptavidin contrast. We hypothesized that redesigning our contrast agents would increase imaging performance. Improved molecular imaging reagents were created by combining NeutrAvidin™-functionalized microbubbles with biotinylated SFRP2 or IgY control antibodies...
2017: PloS One
https://www.readbyqxmd.com/read/28333499/are-applicants-more-likely-to-quit-longer-assessments-examining-the-effect-of-assessment-length-on-applicant-attrition-behavior
#11
Jay H Hardy, Carter Gibson, Matthew Sloan, Alison Carr
Conventional wisdom suggests that assessment length is positively related to the rate at which applicants opt out of the assessment phase. However, restricting assessment length can negatively impact the utility of a selection system by reducing the reliability of its construct scores and constraining coverage of the relevant criterion domain. Given the costly nature of these tradeoffs, is it better for managers to prioritize (a) shortening assessments to reduce applicant attrition rates or (b) ensuring optimal reliability and validity of their assessment scores? In the present study, we use data from 222,772 job-seekers nested within 69 selection systems to challenge the popular notion that selection system length predicts applicant attrition behavior...
March 23, 2017: Journal of Applied Psychology
https://www.readbyqxmd.com/read/28332643/virus-mutations-and-their-impact-on-vaccination-against-infectious-bursal-disease-gumboro-disease
#12
A Boudaoud, B Mamache, W Tombari, A Ghram
Infectious bursal disease (also known as Gumboro disease) is an immunosuppressive viral disease specific to chickens. In spite of all the information amassed on the antigenic and immunological characteristics of the virus, the disease has not yet been brought fully under control. It is still prevalent in properly vaccinated flocks carrying specific antibodies at levels normally high enough to prevent the disease. Common causes apart, failure of vaccination against infectious bursal disease is associated mainly with early vaccination in flocks of unknown immune status and with the evolution of viruses circulating in the field, leading to antigenic drift and a sharp rise in pathogenicity...
December 2016: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28332389/enhancing-photocatalytic-hydrogen-evolution-performance-of-metal-semiconductor-catalyst-through-modulation-of-schottky-barrier-height-by-controlling-orientation-of-interface
#13
Yang Liu, Xin Gu, Wen Qi, Hong Zhu, Hao Shan, Wenlong Chen, Peng Tao, Chengyi Song, Wen Shang, Tao Deng, Jianbo Wu
Construction of a metal-semiconductor heterojunction is a promising method to improve heterogeneous photocatalysis for various reactions. Though the structure and photocatalytic performance of such catalyst system have been extensively studied, few report has been demonstrated the effect of interface orientation at metal-semiconductor junction on the junction barrier bending and the electronic transport properties. Here, we construct a Pt/PbS heterojunction, where Pt NPs are used as highly active catalysts and PbS nanocrystals (NCs) with well-controlled shapes are used as light-harvesting support...
March 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28331362/anesthesia-for-the-patient-undergoing-total-knee-replacement-current-status-and-future-prospects
#14
REVIEW
Zachary A Turnbull, Dahniel Sastow, Gregory P Giambrone, Tiffany Tedore
Total knee arthroplasty (TKA) has become one of the most common orthopedic surgical procedures performed nationally. As the population and surgical techniques for TKAs have evolved over time, so have the anesthesia and analgesia used for these procedures. General anesthesia has been the dominant form of anesthesia utilized for TKA in the past, but regional anesthetic techniques are on the rise. Multiple studies have shown the potential for regional anesthesia to improve patient outcomes, such as a decrease in intraoperative blood loss, length of stay, and patient mortality...
2017: Local and Regional Anesthesia
https://www.readbyqxmd.com/read/28330963/decrease-in-a%C3%AE-42-predicts-dopa-resistant-gait-progression-in-early-parkinson-disease
#15
Lynn Rochester, Brook Galna, Sue Lord, Alison J Yarnall, Rosie Morris, Gordon Duncan, Tien K Khoo, Brit Mollenhauer, David J Burn
OBJECTIVE: This prospective observational study investigates the role of CSF biomarkers in predicting progression of dopa-resistant gait impairments in Parkinson disease (PD) in the first 36 months from diagnosis. METHODS: Quantitative gait analysis was carried out longitudinally using an instrumented walkway (GAITRite) in 108 people with PD and 130 age-matched controls. A subgroup of 44 people with PD underwent lumbar puncture from which a battery of CSF biomarkers was measured: β-amyloid 1-42 and 1-40 (Aβ42 and Aβ40), total and phosphorylated tau protein (t-tau/p-tau181), and α-synuclein (αSyn)...
March 22, 2017: Neurology
https://www.readbyqxmd.com/read/28330701/modeling-malaria-control-intervention-effect-in-kwazulu-natal-south-africa-using-intervention-time-series-analysis
#16
Osadolor Ebhuoma, Michael Gebreslasie, Lethumusa Magubane
The change of the malaria control intervention policy in South Africa (SA), re-introduction of dichlorodiphenyltrichloroethane (DDT), may be responsible for the low and sustained malaria transmission in KwaZulu-Natal (KZN). We evaluated the effect of the re-introduction of DDT on malaria in KZN and suggested practical ways the province can strengthen her already existing malaria control and elimination efforts, to achieve zero malaria transmission. We obtained confirmed monthly malaria cases in KZN from the malaria control program of KZN from 1998 to 2014...
March 18, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28330328/optimization-of-phytase-production-from-potato-waste-using-aspergillus-ficuum
#17
Mengmeng Tian, Qiuyan Yuan
Solid-state fermentation (SSF) can divert food waste from landfills and produce high-value products. This study was aimed to investigate the feasibility of using SSF and optimize the conditions of production of phytase by Aspergillus ficuum from potato waste. Different parameters including pH of the potato waste, inoculum level, moisture content, incubation period, temperature, and supplementary nitrogen and carbon sources were evaluated. The results indicated that pH, inoculum level, and moisture content did not significantly vary phytase production...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330012/mechanical-thrombectomy-for-minor-and-mild-stroke-patients-harboring-large-vessel-occlusion-in-the-anterior-circulation-a-multicenter-case-control-study
#18
Cyril Dargazanli, Caroline Arquizan, Arturo Consoli, Benjamin Gory, Omer Eker, Xavier Ayrignac, Jean-Pierre Decroix, Astrid Corlobé, Isabelle Mourand, Grégory Gascou, Mahmoud Charif, Julien Labreuche, Alain Duhamel, Paul-Emile Labeyrie, Hocine Redjem, Gabriele Ciccio, Stanislas Smajda, Carlos Riquelme, Oguzhan Coskun, Jean-Philippe Desilles, Frédéric Bourdain, Roberto Riva, Mikael Obadia, Francis Turjman, Georges Rodesch, Pierre Labauge, Alain Bonafé, Mikael Mazighi, Vincent Costalat, Michel Piotin, Raphaël Blanc, Bertrand Lapergue
BACKGROUND AND PURPOSE: Proximal large vessel occlusion (LVO) is present in up to 30% of minor strokes. There is no proven effectiveness of MT in the subgroup of minor stroke with LVO in the anterior circulation and data about mechanical thrombectomy (MT) in this subgroup of patients are sparse, with optimal management of these patients being yet not definitely addressed. The purpose of this case-control study was to evaluate MT in patients suffering from acute ischemic stroke (AIS) and LVO in the anterior circulation, presenting with minor to mild stroke symptoms (NIHSS<8)...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28329638/developing-a-continuous-quality-improvement-assessment-using-a-patient-centered-approach-in-optimizing-sle-disease-control
#19
Katelyn Updyke, Brittany Urso, James A Solomon
Systemic lupus erythematous is a multi-organ autoimmune disease in which the patient has "lost" self- tolerance and developed immune-complexes containing self-antigen that cause disease through tissue inflammation and multi-organ damage. Patients often have unpredictable flares in symptoms with poorly identified triggers. However, it has been suggested in other literature that exogenous exposures, including ingested beef, cigarette smoke, UV radiation, metal-complexing agents, and infections can contribute to exacerbations and improvements in SLE symptoms...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329026/the-effect-of-early-versus-late-initiation-of-renal-replacement-therapy-in-patients-with-acute-kidney-injury-a-meta-analysis-with-trial-sequential-analysis-of-randomized-controlled-trials
#20
Yan-Mei Feng, Yuan Yang, Xiao-Li Han, Fan Zhang, Dong Wan, Rui Guo
BACKGROUND: The optimal timing for initiating renal replacement therapy (RRT) in patients with acute kidney injury (AKI) remains controversial. METHODS: We conducted a meta-analysis with trial sequential analysis (TSA) of randomized controlled trials (RCTs) using PUBMED, Cochrane Library databases, and Web of Science (from January 1, 1985, to August 21, 2016). Adult patients with AKI who received RRT with different timing were included. The primary outcome was mortality...
2017: PloS One
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