scholarly journals A Tribute to Marcin Opallo on his 65 th Birthday: Electrochemistry over 40 Years

2021 ◽  
Author(s):  
Joanna Niedziółka‐Jönsson ◽  
Wojciech Nogala ◽  
Galyna Shul
Keyword(s):  
2015 ◽  
Vol 21 ◽  
pp. 17
Author(s):  
Jose Paz-Ibarra ◽  
Sofia Saenz ◽  
Natali Jauregui ◽  
Marialejandra Delgado ◽  
Jose Somocurcio

2007 ◽  
Vol 30 (4) ◽  
pp. 46
Author(s):  
L. P. Hwi ◽  
J. W. Ting

Cecil Cameron Ewing (1925-2006) was a lecturer and head of ophthalmology at the University of Saskatchewan. Throughout his Canadian career, he was an active researcher who published several articles on retinoschisis and was the editor of the Canadian Journal of Ophthalmology. For his contributions to Canadian ophthalmology, the Canadian Ophthalmological Society awarded Ewing a silver medal. Throughout his celebrated medical career, Ewing maintained his passion for music. His love for music led him to be an active member in choir, orchestra, opera and chamber music in which he sang and played the piano, violin and viola. He was also the director of the American Liszt Society and a member for over 40 years. The connection between music and ophthalmology exists as early as the 18th Century. John Taylor (1703-1772) was an English surgeon who specialized in eye diseases. On the one hand, Taylor was a scientist who contributed to ophthalmology by publishing books on ocular physiology and diseases, and by advancing theories of strabismus. On the other hand, Taylor was a charlatan who traveled throughout Europe and blinded many patients with his surgeries. Taylor’s connection to music was through his surgeries on two of the most famous Baroque composers: Johann Sebastian Bach (1685-1750) and George Frederick Handel (1685-1759). Bach had a painful eye disorder and after two surgeries by Taylor, Bach was blind. Handel had poor or absent vision prior to Taylor’s surgery, and his vision did not improve after surgery. The connection between ophthalmology and music spans over three centuries from the surgeries of Taylor to the musical passion of Ewing. Ewing E. Cecil Cameron Ewing. BMJ 2006; 332(7552):1278. Jackson DM. Bach, Handel, and the Chevalier Taylor. Med Hist 1968; 12(4):385-93. Zegers RH. The Eyes of Johann Sebastian Bach. Arch Ophthalmol 2005; 123(10):1427-30.


2018 ◽  
Author(s):  
Francisco Schneuer ◽  
Elizabeth Milne ◽  
Sarra E. Jamieson ◽  
Gavin Pereira ◽  
Michele Hansen ◽  
...  

2021 ◽  
Vol 28 (1) ◽  
pp. e100351
Author(s):  
Victoria Alba Malek Pascha ◽  
Li Sun ◽  
Ramiro Gilardino ◽  
Rosa Legood

ObjectivesArgentina is a low and middle-income country (LMIC) with a highly fragmented healthcare system that conflicts with access to healthcare stated by the country’s Universal Health Coverage plan. A tele-mammography network could improve access to breast cancer screening decreasing its mortality. This research aims to conduct an economic evaluation of the implementation of a tele-mammography program to improve access to healthcare.MethodsA cost-utility analysis was performed to explore the incremental benefit of annual tele-mammography screening for at-risk Argentinian women over 40 years old. A Markov model was developed to simulate annual mammography or tele-mammography screening in two hypothetical population-based cohorts of asymptomatic women. Parameter uncertainty was evaluated through deterministic and probabilistic sensitivity analysis. Model structure uncertainty was also explored to test the robustness of the results.ResultsIt was estimated that 31 out of 100 new cases of breast cancer would be detected by mammography and 39/100 by tele-mammography. The model returned an incremental cost-effectiveness ratio (ICER) of £26 051/quality-adjusted life-year (QALY) which is lower than the WHO-recommended threshold of £26 288/QALY for Argentina. Deterministic sensitivity analysis showed the ICER is most sensitive to the uptake and sensitivity of the screening tests. Probabilistic sensitivity analysis showed tele-mammography is cost-effective in 59% of simulations.DiscussionTele-mammography should be considered for adoption as it could improve access to expertise in underserved areas where adherence to screening protocols is poor. Disaggregated data by province is needed for a better- informed policy decision. Telemedicine could also be beneficial in ensuring the continuity of care when health systems are under stress like in the current COVID-19 pandemic.ConclusionThere is a 59% chance that tele-mammography is cost-effective compared to mammography for at-risk Argentinian women over 40- years old, and should be adopted to improve access to healthcare in underserved areas of the country.


2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Xinyue Zhang ◽  
Ting Feng ◽  
Jihong Yang ◽  
Yingying Hao ◽  
Suying Li ◽  
...  

Abstract Background Ovarian responsiveness to controlled ovarian stimulation is essential for a successful clinical outcome in assisted reproductive technology (ART) cycles. We aimed to find a suitable new ovulation stimulation protocol for poor ovarian response (POR) patients over 40 years old. Methods A retrospective analysis of 488 ART cycles was evaluated from January 2015 to June 2019. Comparisons were made between the flexible short protocol (FSP), routine short protocol and mild stimulation protocol. Results Compared with the routine short protocol, the FSP delayed the gonadotropin start time and reduced the total gonadotropin dose per stimulation cycle. At the same time, compared with the mild stimulation protocol, the FSP improved oocyte quality and embryo quality and improved embryo implantation potential after transfer. Furthermore, the use of the FSP reduced the probability of premature ovulation, as it inhibited the premature luteinizing hormone (LH) surge to a certain extent. Conclusions The FSP yielded better outcomes than other protocols for patients with POR over 40 years old in our study. However, further prospective studies are needed to provide more substantial evidence and to determine whether the FSP can be successful for both patients over 40 years group and younger POR patients.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xinsheng Xia ◽  
D. C. Van Hoesen ◽  
Matthew E. McKenzie ◽  
Randall E. Youngman ◽  
K. F. Kelton

AbstractFor over 40 years, measurements of the nucleation rates in a large number of silicate glasses have indicated a breakdown in the Classical Nucleation Theory at temperatures below that of the peak nucleation rate. The data show that instead of steadily decreasing with decreasing temperature, the work of critical cluster formation enters a plateau and even starts to increase. Many explanations have been offered to explain this anomaly, but none have provided a satisfactory answer. We present an experimental approach to demonstrate explicitly for the example of a 5BaO ∙ 8SiO2 glass that the anomaly is not a real phenomenon, but instead an artifact arising from an insufficient heating time at low temperatures. Heating times much longer than previously used at a temperature 50 K below the peak nucleation rate temperature give results that are consistent with the predictions of the Classical Nucleation Theory. These results raise the question of whether the claimed anomaly is also an artifact in other glasses.


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