scholarly journals Authors’ reply to: Comment on the article by Dr. N. Shakrawal: Barrier device prototype for open tracheotomy during COVID-19 pandemic

2020 ◽  
Author(s):  
Dr. Wellington Alves Filho
Keyword(s):  
Author(s):  
Olusola Akinbami ◽  
Grace N Ngubeni ◽  
Francis Otieno ◽  
Rudo Kadzutu-Sithole ◽  
Cebisa Linganiso ◽  
...  

2D hybrid perovskites are promising materials for solar cell applications, in particular, cesium based perovskite nanocrystals as they offer the stability that is absent in organic-inorganic perovskite. However, the most...


1995 ◽  
Vol 377 ◽  
Author(s):  
X. Deng ◽  
S. J. Jones ◽  
J. Evans ◽  
M. Izu

ABSTRACTThe Schottky barrier device with a metal/a-Si (n+) /a-Si alloy/metal structure has been widely used as an alternative evaluation tool for the photovoltaic performance of a-Si alloy material since it more reliably reflects the carrier transport in a solar cell than the conventional material characterization tool such as PDS, CPM, and SSPG, and is easier to be fabricated compared with a complete nip solar cell. However, a multiple chamber device making system is still needed to fabricate such a device since one does not want to deposit the a-Si intrinsic material to be studied together with an n+ layer in the same chamber. We have explored the use of a Schottky barrier device deposited on heavily doped n-type crystalline wafer substrate, c-Si (n+) /a-Si alloy/metal, as an evaluation tool for a-Si alloy materials. In this device, besides the evaporation of a thin semi-transparent metal layer, only the active a-Si alloy layer needs to be deposited using the plasma enhanced or other deposition techniques. We have compared the performance of such a device with that of reference n-i-p solar cells deposited at the same time and demonstrated that the FF measured under weak red light show a good correlation between these two types of devices. Therefore the c-Si (n+) /a-Si alloy/metal device can be used as a convenient technique to reliably evaluate the material performance in a solar cell device.


Author(s):  
Sungjung Joo ◽  
Jinki Hong ◽  
Kungwon Rhie ◽  
Kyung-Ho Shin ◽  
Jungseung Kim ◽  
...  

Endoscopy ◽  
2021 ◽  
Author(s):  
Hiroya Ueyama ◽  
Yoichi Akazawa ◽  
Toshio Fujisawa ◽  
Hiroyuki Isayama ◽  
Akihito Nagahara

2011 ◽  
Vol 12 (6) ◽  
pp. 241-245 ◽  
Author(s):  
Nitin Bhanot ◽  
Sriharsha Rao ◽  
Shobha Sharma ◽  
Edmond S Malka ◽  
Monica Ghitan ◽  
...  

phygmomanometers are frequently contaminated with bacteria and are implicated in the transmission of microbes. A pilot study was conducted to determine the effectiveness and feasibility of using a physical barrier device in reducing rates of microbial contamination of sphygmomanometer cuffs. Blood pressure recordings were made with and without a disposable plastic device on healthy individuals to ensure that it did not interfere with the accuracy of readings. Baseline rates of microbial colonisation of sphygmomanometer cuffs were obtained over a six week period. For six weeks the device was applied to patients’ arms before measuring blood pressure, and sphygmomanometer cuffs were recultured during the intervention period. No difference was found in blood pressure recordings with and without the device. No difference in rates of bacterial contamination was observed during the intervention phase of the study. A disposable plastic device acting as a physical barrier may not reduce surface contamination of sphygmomanometer cuffs.


2019 ◽  
Vol 25 (5) ◽  
pp. 612-617 ◽  
Author(s):  
Erin E. Grinich ◽  
Anuja V. Shah ◽  
Eric L. Simpson

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