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https://www.readbyqxmd.com/read/28817777/predicting-nox-catalysis-by-quantifying-ce-3-from-surface-and-lattice-oxygen
#1
Vinod Kumar Paidi, Louisa Savereide, David J Childers, Justin M Notestein, Charles Alexander Roberts, Johan van Lierop
Our work introduces a novel technique based on the magnetic response of Ce(3+) and molecular oxygen adsorbed on the surface of nanoceria and ceria-based catalysts that quantifies the number and type of defects, and demonstrates that this information is the missing link that finally enables predictive design of NOx catalysis in ceria-based systems. The new insights into ceria catalysis are enabled by quantifying the above for different ceria nanoparticle shapes (i.e. surface terminations) and O2 partial pressure...
August 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28817604/therapeutic-flexible-airway-endoscopy-of-small-children-in-a-tertiary-referral-center-11-years-experience
#2
Wen-Jue Soong, Pei-Chen Tsao, Yu-Sheng Lee, Chia-Feng Yang
OBJECTIVES: Use of therapeutic flexible airway endoscopy (TFAE) is very limited in pediatrics. We report our clinical experiences and long term outcomes of TFAE in small children from a single tertiary referral center. METHODS: This is a retrospective cohort study. Small children with their body weight no more than 5.0 kg who had received TFAE between 2005 and 2015 were enrolled. Demographic information and outcomes were reviewed and analyzed from medical charts and TFAE videos...
2017: PloS One
https://www.readbyqxmd.com/read/28817508/end-tidal-co2-guided-chest-compression-delivery-improves-survival-in-a-neonatal-asphyxial-cardiac-arrest-model
#3
Justin T Hamrick, Jennifer L Hamrick, Utpal Bhalala, Jillian S Armstrong, Jeong-Hoo Lee, Ewa Kulikowicz, Jennifer K Lee, Sapna R Kudchadkar, Raymond C Koehler, Elizabeth A Hunt, Donald H Shaffner
OBJECTIVES: To determine whether end-tidal CO2-guided chest compression delivery improves survival over standard cardiopulmonary resuscitation after prolonged asphyxial arrest. DESIGN: Preclinical randomized controlled study. SETTING: University animal research laboratory. SUBJECTS: 1-2-week-old swine. INTERVENTIONS: After undergoing a 20-minute asphyxial arrest, animals received either standard or end-tidal CO2-guided cardiopulmonary resuscitation...
August 16, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28817334/community-health-worker-support-for-disadvantaged-patients-with-multiple-chronic-diseases-a-randomized-clinical-trial
#4
Shreya Kangovi, Nandita Mitra, David Grande, Hairong Huo, Robyn A Smith, Judith A Long
OBJECTIVES: To determine whether a community health worker (CHW) intervention improved outcomes in a low-income population with multiple chronic conditions. METHODS: We conducted a single-blind, randomized clinical trial in Philadelphia, Pennsylvania (2013-2014). Participants (n = 302) were high-poverty neighborhood residents, uninsured or publicly insured, and diagnosed with 2 or more chronic diseases (diabetes, obesity, tobacco dependence, hypertension). All patients set a disease-management goal...
August 17, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28816935/perimesencephalic-nonaneurysmal-subarachnoid-hemorrhage-caused-by-transverse-sinus-thrombosis-a-case-report-and-review-of-literature
#5
Fang-Wang Fu, Jie Rao, Yuan-Yuan Zheng, Liang Song, Wei Chen, Qi-Hui Zhou, Jian-Guang Yang, Jiang-Qiong Ke, Guo-Qing Zheng
RATIONALE: Perimesencephalic nonaneurysmal subarachnoid hemorrhage (PNSAH) is characterized by a pattern of extravasated blood restricted to the perimesencephalic cisterns, normal angiographic findings, and an excellent prognosis with an uneventful course and low risks of complication. The precise etiology of bleeding in patients with PNSAH has not yet been established. The most common hypothesis is that PNSAH is venous in origin. Intracranial venous hypertension has been considered as the pivotal factor in the pathogenesis of PNSAH...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28816919/enteral-nutrition-practices-in-critically-ill-children-requiring-noninvasive-positive-pressure-ventilation
#6
Matthew K Leroue, Ryan J Good, Heather E Skillman, Angela S Czaja
OBJECTIVES: Evaluate the practice of providing enteral nutrition in critically ill children requiring noninvasive positive pressure ventilation. DESIGN: Retrospective cohort study. SETTING: PICU within a quaternary care children's hospital. PATIENTS: PICU patients older than 30 days requiring noninvasive positive pressure ventilation for greater than or equal to 24 hours from August 2014 to June 2015. Invasive mechanical ventilation prior to noninvasive positive pressure ventilation and inability to receive enteral nutrition at baseline were additional exclusionary criteria...
August 12, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28816431/carbon-nanotubes-arranged-as-smart-interfaces-in-lipid-langmuir-blodgett-films-enhancing-the-enzymatic-properties-of-penicillinase-for-biosensing-applications
#7
Fabio Scholl, Paulo Morais, Rayla Gabriel, Michael J Schöning, Jose Roberto Siqueira, Luciano Caseli
In this paper, carbon nanotubes (CNTs) were incorporated in penicillinase-phospholipid Langmuir and Langmuir-Blodgett (LB) films to enhance the enzyme catalytic properties. Adsorption of the penicillinase and CNTs at dimyristoylphosphatidic acid (DMPA) monolayers at the air-water interface was investigated by surface pressure-area isotherms, vibrational spectroscopy and Brewster angle microscopy. The floating monolayers were transferred to solid supports through the LB technique, forming mixed DMPA-CNTs-PEN films, which were investigated by quartz crystal microbalance, vibrational spectroscopy, and atomic force microscopy...
August 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28816245/ram-pressure-feeding-of-supermassive-black-holes
#8
Bianca M Poggianti, Yara L Jaffé, Alessia Moretti, Marco Gullieuszik, Mario Radovich, Stephanie Tonnesen, Jacopo Fritz, Daniela Bettoni, Benedetta Vulcani, Giovanni Fasano, Callum Bellhouse, George Hau, Alessandro Omizzolo
When a supermassive black hole at the centre of a galaxy accretes matter, it gives rise to a highly energetic phenomenon: an active galactic nucleus. Numerous physical processes have been proposed to account for the funnelling of gas towards the galactic centre to feed the black hole. There are also several physical processes that can remove gas from a galaxy, one of which is ram-pressure stripping by the hot gas that fills the space between galaxies in galaxy clusters. Here we report that six out of a sample of seven 'jellyfish' galaxies-galaxies with long 'tentacles' of material that extend for dozens of kiloparsecs beyond the galactic disks-host an active nucleus, and two of them also have galactic-scale ionization cones...
August 16, 2017: Nature
https://www.readbyqxmd.com/read/28815888/friction-and-wetting-transitions-of-magnetic-droplets-on-micropillared-superhydrophobic-surfaces
#9
Anas Al-Azawi, Mika Latikka, Ville Jokinen, Sami Franssila, Robin H A Ras
Reliable characterization of wetting properties is essential for the development and optimization of superhydrophobic surfaces. Here, the dynamics of superhydrophobicity is studied including droplet friction and wetting transitions by using droplet oscillations on micropillared surfaces. Analyzing droplet oscillations by high-speed camera makes it possible to obtain energy dissipation parameters such as contact angle hysteresis force and viscous damping coefficients, which indicate pinning and viscous losses, respectively...
August 16, 2017: Small
https://www.readbyqxmd.com/read/28815842/in-situ-investigation-of-methane-dry-reforming-on-m-ceo2-111-m-co-ni-cu-surfaces-metal-support-interactions-and-the-activation-of-c-h-bonds-at-low-temperature
#10
Jose A Rodriguez, Zongyuan Liu, Pablo Lustemberg, Ramon Gutierrez, John Carey, Robert Palomino, Mykhailo Vorohta, David Grinter, Pedro Ramirez, Vladimir Matolin, Michael Nolan, M Veronica Ganduglia-Pirovano, Sanjaya Senanayake
Studies with a series of M-CeO2(111) {M= Co, Ni, Cu} surfaces indicate that metal-oxide interactions can play a very important role for the activation of methane and its reforming with CO2 at relatively low temperatures (600-700 K). Among the systems examined, Co-CeO2(111) exhibits the best performance and Cu-CeO2(111) has negligible activity. Experiments using ambient pressure XPS indicate that methane dissociates on Co-CeO2(111), at temperatures as low as 300 K, generating CHx and COx species on the catalyst surface...
August 16, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28814949/physicians-views-on-the-role-of-smoking-in-smoking-related-diseases-findings-from-cross-sectional-studies-from-1982-2014-in-estonia
#11
Kersti Pärna, Mariliis Põld, Inge Ringmets
BACKGROUND: Previous reports have shown that physicians who smoke underestimate the effects of smoking on health and this influences their practice. This study was designed to investigate the views of Estonian physicians on the role of smoking in smoking-related diseases. METHODS: Cross-sectional postal surveys were sent to all practising physicians in Estonia in 1982, 2002 and 2014 providing data from 3504, 2694, and 2865 physicians respectively. Data analysis involved calculation of the prevalence of smoking with 95% confidence intervals and calculation of the prevalence of agreement with a causal role of smoking in ischaemic heart disease (IHD), lung cancer and chronic bronchitis...
2017: Tobacco Induced Diseases
https://www.readbyqxmd.com/read/28814839/acceptance-and-usability-of-a-home-based-monitoring-tool-of-health-indicators-in-children-of-people-with-dementia-a-proof-of-principle-pop-study
#12
April Bcg Boessen, Joan Vermeulen, Luc P de Witte
BACKGROUND: Large-scale cohort studies are needed to confirm the relation between dementia and its possible risk factors. The inclusion of people with dementia in research is a challenge, however, children of people with dementia are at risk and are highly motivated to participate in dementia research. For technologies to support home-based data collection during large-scale studies, participants should be able and willing to use technology for a longer period of time. OBJECTIVE: This study investigated acceptance and usability of iVitality, a research platform for home-based monitoring of dementia health indicators, in 151 children of people with dementia and investigated which frequency of measurements is acceptable for them...
2017: Patient Preference and Adherence
https://www.readbyqxmd.com/read/28814753/the-psi-yeast-prion-does-not-wildly-affect-proteome-composition-whereas-selective-pressure-exerted-on-psi-cells-can-promote-aneuploidy
#13
Patrick H W Chan, Lisa Lee, Erin Kim, Tony Hui, Nikolay Stoynov, Roy Nassar, Michelle Moksa, Dale M Cameron, Martin Hirst, Joerg Gsponer, Thibault Mayor
The yeast Sup35 protein is a subunit of the translation termination factor, and its conversion to the [PSI (+)] prion state leads to more translational read-through. Although extensive studies have been done on [PSI (+)], changes at the proteomic level have not been performed exhaustively. We therefore used a SILAC-based quantitative mass spectrometry approach and identified 4187 proteins from both [psi (-)] and [PSI (+)] strains. Surprisingly, there was very little difference between the two proteomes under standard growth conditions...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28814664/pulmonary-arterial-hypertension-treatment-with-carvedilol-for-heart-failure-a-randomized-controlled-trial
#14
Samar Farha, Didem Saygin, Margaret M Park, Hoi I Cheong, Kewal Asosingh, Suzy Aa Comhair, Olivia R Stephens, Emir C Roach, Jacqueline Sharp, Kristin B Highland, Frank P DiFilippo, Donald R Neumann, W H Wilson Tang, Serpil C Erzurum
BACKGROUND: Right-sided heart failure is the leading cause of death in pulmonary arterial hypertension (PAH). Similar to left heart failure, sympathetic overactivation and β-adrenoreceptor (βAR) abnormalities are found in PAH. Based on successful therapy of left heart failure with β-blockade, the safety and benefits of the nonselective β-blocker/vasodilator carvedilol were evaluated in PAH. METHODS: PAH Treatment with Carvedilol for Heart Failure (PAHTCH) is a single-center, double-blind, randomized, controlled trial...
August 17, 2017: JCI Insight
https://www.readbyqxmd.com/read/28814247/fluid-and-medication-considerations-in-the-traumatized-patient
#15
Amita Misir
This article reviews fluid therapy and medications in pediatric trauma. For resuscitation in the setting of hemorrhagic shock, isotonic crystalloid solution is the first-line agent of choice. Colloid solutions offer no additional benefit, introduce possible increased risks and cost more than crystalloids. Blood products, starting with pRBCs, should be introduced after 20-40 ml/kg of crystalloid has been administered if there is ongoing need for volume replacement. The use of a massive transfusion protocol of 1:1:1 (if >30 kg) or 30:20:20 (if <30 kg) of pRBCs:FFP:platelets is suggested after an initial 30 ml/kg of pRBcs have been administered...
August 14, 2017: Current Pediatric Reviews
https://www.readbyqxmd.com/read/28813512/implementation-of-a-comprehensive-intervention-for-patients-at-high-risk-of-cardiovascular-disease-in-rural-china-a-pragmatic-cluster-randomized-controlled-trial
#16
Xiaolin Wei, John D Walley, Zhitong Zhang, Guanyang Zou, Weiwei Gong, Simin Deng, Anthony D Harries, Joseph P Hicks, Marc K C Chong, James N Newell, Jieming Zhong, Min Yu
OBJECTIVE: This study aims to assess whether a standard intervention package of cardiovascular disease (CVD) care was being delivered effectively, and if it was associated with improved lifestyle and biomedical indicators. METHODS: In rural China, we implemented a pragmatic cluster randomized controlled trial for 12 months, randomized at the township hospital level, and compared with usual care. Intervention case management guideline, training and performance monitoring meeting and patient support activities were designed to fit within the job description of family doctors in the township hospitals and comprised: 1) prescription of a standardised package of medicines targeted at those with hypertension or diabetes; 2) advice about specific lifestyle interventions; and 3) advice about medication adherence...
2017: PloS One
https://www.readbyqxmd.com/read/28812942/acute-hypertensive-response-in-patients-with-intracerebral-hemorrhage-pathophysiology-and-treatment
#17
Adnan I Qureshi, Mushtaq H Qureshi
Acute hypertensive response is a common systemic response to occurrence of intracerebral hemorrhage which has gained unique prominence due to high prevalence and association with hematoma expansion and increased mortality. Presumably, the higher systemic blood pressure predisposes to continued intraparenchymal hemorrhage by transmission of higher pressure to the damaged small arteries and may interact with hemostatic and inflammatory pathways. Therefore, intensive reduction of systolic blood pressure has been evaluated in several clinical trials as a strategy to reduce hematoma expansion and subsequent death and disability...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28812745/hysteresis-and-bonding-reconstruction-in-the-pressure-induced-b3-b1-phase-transition-of-3c-sic
#18
Miguel A Salvadó, R Franco, Pilar Pertierra, T Ouahrani, J M Recio
The determination of kinetic factors affecting phase metastability is crucial for the design of materials out of the ambient conditions. At a given temperature, the kinetic barrier associated with the reconstruction of the bonding network of a pressure-induced phase transition can be only overcome at pressures where the available vibrational energy of the system is equal or higher than the corresponding activation energy. Our work demonstrates that these pressures provide boundaries to hysteresis cycles that can be evaluated following a three-step computational strategy: (i) total energy electronic structure calculations, (ii) determination of vibrational contributions by means of a simple Debye model, and (iii) description of the energetic profile along the transition path in the framework of the martensitic approximation...
August 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28812699/primate-brain-size-is-predicted-by-diet-but-not-sociality
#19
Alex R DeCasien, Scott A Williams, James P Higham
The social brain hypothesis posits that social complexity is the primary driver of primate cognitive complexity, and that social pressures ultimately led to the evolution of the large human brain. Although this idea has been supported by studies indicating positive relationships between relative brain and/or neocortex size and group size, reported effects of different social and mating systems are highly conflicting. Here, we use a much larger sample of primates, more recent phylogenies, and updated statistical techniques, to show that brain size is predicted by diet, rather than multiple measures of sociality, after controlling for body size and phylogeny...
March 27, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812203/assessment-of-methodologies-to-calculate-intraventricular-pressure-differences-in-computational-models-and-patients
#20
Francisco J Londono-Hoyos, Abigail Swillens, Joris Van Cauwenberge, Brett Meyers, Maheswara Reddy Koppula, Pavlos Vlachos, Julio A Chirinos, Patrick Segers
Intraventricular pressure differences (IVPDs) govern left ventricular (LV) efficient filling and are a significant determinant of LV diastolic function. Our primary aim is to assess the performance of available methods (color M-mode (CMM) and 1D/2D MRI-based methods) to determine IVPDs from intracardiac flow measurements. Performance of three methods to calculate IVPDs was first investigated via an LV computational fluid dynamics (CFD) model. CFD velocity data were derived along a modifiable scan line, mimicking ultrasound/MRI acquisition of 1D (IVPDCMM/IVPD1D MRI) and 2D (IVPD2D MRI) velocity-based IVPD information...
August 16, 2017: Medical & Biological Engineering & Computing
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