Influence of annealing at intermediate temperature on oxygen transport kinetics of Pr2NiO4+δ

2018 ◽  
Vol 6 (18) ◽  
pp. 8331-8339 ◽  
Author(s):  
Saim Saher ◽  
Jia Song ◽  
Vaibhav Vibhu ◽  
Clément Nicollet ◽  
Aurélien Flura ◽  
...  
Keyword(s):  
Oxygen Transport ◽  
Higher Order ◽  
Transport Kinetics ◽  
Intermediate Temperature ◽  
Kinetics Of

Decomposition of the layered Ruddlesden–Popper (RP) phase Pr2NiO4+δ into higher order phases during long-term annealing dramatically enhances oxygen transport.

A permeation model study of oxygen transport kinetics of Ba x Sr 1‐x Co 0 . 8 Fe 0 . 2 O 3 ‐δ

AIChE Journal ◽  
2020 ◽  
Vol 66 (9) ◽  
Author(s):  
Yue Zhu ◽  
Lili Cai ◽  
Wenping Li ◽  
Zhongwei Cao ◽  
Hongbo Li ◽  
...  
Keyword(s):  
Oxygen Transport ◽  
Transport Kinetics ◽  
Model Study ◽  
Kinetics Of

Oxygen transport kinetics of the misfit layered oxide Ca3Co4O9+δ

2014 ◽  
Vol 2 (46) ◽  
pp. 19717-19725 ◽  
Author(s):  
V. Thoréton ◽  
Y. Hu ◽  
C. Pirovano ◽  
E. Capoen ◽  
N. Nuns ◽  
...  
Keyword(s):  
Oxygen Transport ◽  
Oxygen Exchange ◽  
Solid Oxide ◽  
Transport Kinetics ◽  
Air Electrode ◽  
Layered Oxide ◽  
Exchange Kinetics ◽  
Kinetics Of

Ca3Co4O9+δ exhibits fast oxygen exchange kinetics rendering it a promising electrode for application as an air electrode in solid oxide cells.

Oxygen transport kinetics of MIEC membranes coated with different catalysts

AIChE Journal ◽  
2016 ◽  
Vol 62 (8) ◽  
pp. 2803-2812 ◽  
Author(s):  
Yan Liu ◽  
Yue Zhu ◽  
Mingrun Li ◽  
Xuefeng Zhu ◽  
Weishen Yang
Keyword(s):  
Oxygen Transport ◽  
Transport Kinetics ◽  
Kinetics Of

Comparative Labelling and Biokinetic Studies of 99mTc-EDTA(Sn) and 99mTc-DTPA(Sn)

1977 ◽  
Vol 16 (01) ◽  
pp. 30-35 ◽  
Author(s):  
N. Agha ◽  
R. B. R. Persson
Keyword(s):  
Complex Formation ◽  
Significant Influence ◽  
Room Temperature ◽  
Ph Value ◽  
Maximum Activity ◽  
Reduction Step ◽  
Labelling Yield ◽  
Different Temperatures ◽  
Kinetics Of

SummaryGelchromatography column scanning has been used to study the fractions of 99mTc-pertechnetate, 99mTcchelate and reduced hydrolyzed 99mTc in preparations of 99mTc-EDTA(Sn) and 99mTc-DTPA(Sn). The labelling yield of 99mTc-EDTA(Sn) chelate was as high as 90—95% when 100 μmol EDTA · H4 and 0.5 (Amol SnCl2 was incubated with 10 ml 99mTceluate for 30—60 min at room temperature. The study of the influence of the pH-value on the fraction of 99mTc-EDTA shows that pH 2.8—2.9 gave the best labelling yield. In a comparative study of the labelling kinetics of 99mTc-EDTA(Sn) and 99mTc- DTPA(Sn) at different temperatures (7, 22 and 37°C), no significant influence on the reduction step was found. The rate constant for complex formation, however, increased more rapidly with increased temperature for 99mTc-DTPA(Sn). At room temperature only a few minutes was required to achieve a high labelling yield with 99mTc-DTPA(Sn) whereas about 60 min was required for 99mTc-EDTA(Sn). Comparative biokinetic studies in rabbits showed that the maximum activity in kidneys is achieved after 12 min with 99mTc-EDTA(Sn) but already after 6 min with 99mTc-DTPA(Sn). The long-term disappearance of 99mTc-DTPA(Sn) from the kidneys is about five times faster than that for 99mTc-EDTA(Sn).

scholarly journals “Is It Overtraining or Just Work Ethic?”: Coaches’ Perceptions of Overtraining in High-Performance Strength Sports

Sports ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 85
Author(s):  
Lee Bell ◽  
Alan Ruddock ◽  
Tom Maden-Wilkinson ◽  
Dave Hembrough ◽  
David Rogerson
Keyword(s):  
Physical Performance ◽  
Thematic Analysis ◽  
High Performance ◽  
Higher Order ◽  
Short Term ◽  
Semistructured Interviews ◽  
Diagnostic Symptoms ◽  
Careful Manipulation ◽  
Sport Coaches

Optimal physical performance is achieved through the careful manipulation of training and recovery. Short-term increases in training demand can induce functional overreaching (FOR) that can lead to improved physical capabilities, whereas nonfunctional overreaching (NFOR) or the overtraining syndrome (OTS) occur when high training-demand is applied for extensive periods with limited recovery. To date, little is known about the OTS in strength sports, particularly from the perspective of the strength sport coach. Fourteen high-performance strength sport coaches from a range of strength sports (weightlifting; n = 5, powerlifting; n = 4, sprinting; n = 2, throws; n = 2, jumps; n = 1) participated in semistructured interviews (mean duration 57; SD = 10 min) to discuss their experiences of the OTS. Reflexive thematic analysis resulted in the identification of four higher order themes: definitions, symptoms, recovery and experiences and observations. Additional subthemes were created to facilitate organisation and presentation of data, and to aid both cohesiveness of reporting and publicising of results. Participants provided varied and sometimes dichotomous perceptions of the OTS and proposed a multifactorial profile of diagnostic symptoms. Prevalence of OTS within strength sports was considered low, with the majority of participants not observing or experiencing long-term reductions in performance with their athletes.

scholarly journals Automated Microscopy: Macro Language Controlling a Confocal Microscope and its External Illumination: Adaptation for Photosynthetic Organisms

2016 ◽  
Vol 22 (2) ◽  
pp. 258-263 ◽  
Author(s):  
Gábor Steinbach ◽  
Radek Kaňa
Keyword(s):  
Light Sources ◽  
Light Conditions ◽  
Photosynthetic Organisms ◽  
Automated Microscopy ◽  
Photosynthetic Microorganisms ◽  
Arduino Microcontroller ◽  
Microscopy Data ◽  
Kinetics Of ◽  
Photosynthetic Cells

AbstractPhotosynthesis research employs several biophysical methods, including the detection of fluorescence. Even though fluorescence is a key method to detect photosynthetic efficiency, it has not been applied/adapted to single-cell confocal microscopy measurements to examine photosynthetic microorganisms. Experiments with photosynthetic cells may require automation to perform a large number of measurements with different parameters, especially concerning light conditions. However, commercial microscopes support custom protocols (throughTime Controlleroffered by Olympus orExperiment Designeroffered by Zeiss) that are often unable to provide special set-ups and connection to external devices (e.g., for irradiation). Our new system combining an Arduino microcontroller with theCell⊕Findersoftware was developed for controlling Olympus FV1000 and FV1200 confocal microscopes and the attached hardware modules. Our software/hardware solution offers (1) a text file-based macro language to control the imaging functions of the microscope; (2) programmable control of several external hardware devices (light sources, thermal controllers, actuators) during imaging via the Arduino microcontroller; (3) theCell⊕Findersoftware with ergonomic user environment, a fast selection method for the biologically important cells and precise positioning feature that reduces unwanted bleaching of the cells by the scanning laser.Cell⊕Findercan be downloaded fromhttp://www.alga.cz/cellfinder. The system was applied to study changes in fluorescence intensity inSynechocystissp. PCC6803 cells under long-term illumination. Thus, we were able to describe the kinetics of phycobilisome decoupling. Microscopy data showed that phycobilisome decoupling appears slowly after long-term (>1 h) exposure to high light.

Long-Term Clinical Effects, Bioavailability, and Kinetics of Minoxidil in Relation to Renal Function

1978 ◽  
Vol 18 (10) ◽  
pp. 500-508 ◽  
Author(s):  
DAVID T. LOWENTHAL ◽  
GADDO ONESTI ◽  
ROBERT MUTTERPERL ◽  
MELTON APFRIME ◽  
EDUARDO W. MARTINEZ ◽  
...  
Keyword(s):  
Renal Function ◽  
Clinical Effects ◽  
Kinetics Of

Phosphorus removal by apatite in horizontal flow constructed wetlands for small communities: pilot and full-scale evidence

2011 ◽  
Vol 63 (8) ◽  
pp. 1629-1637 ◽  
Author(s):  
N. Harouiya ◽  
S. Martin Rue ◽  
S. Prost-Boucle ◽  
A. Liénar ◽  
D. Esser ◽  
...  
Keyword(s):  
Constructed Wetlands ◽  
Particle Surface ◽  
Full Scale ◽  
Retention Capacity ◽  
Small Communities ◽  
Lab Experiments ◽  
Apatite Mineral ◽  
Kinetics Of ◽  
P Removal

Phosphorus (P) removals in constructed wetlands (CWs) have received particular attention in recent decades by using specific materials which promote adsorption/precipitation mechanisms. Recent studies have shown interest in using apatite materials to promote P precipitation onto the particle surface. As previous trials were mainly done by lab experiments, this present study aims to evaluate the real potential of apatites to remove P from wastewater in pilot units and a full-scale plant over a 2 year period. P retention kinetics of two qualities of apatites are presented and discussed. In this work apatite appears to have high retention capacity (>80% of P removal) and is still an interesting way for P removal in CWs for limiting the risk of eutrophication downstream of small communities. Nevertheless, the apatite quality appears to be of great importance for a reliable and long term P removal. The use of materials with low content of apatite mineral (40–50%) seems to be not economically relevant.

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