Role of the chamber wall in low‐pressure high‐density etching plasmas

1995 ◽  
Vol 77 (2) ◽  
pp. 497-504 ◽  
Author(s):  
James A. O’Neill ◽  
Jyothi Singh
Keyword(s):  
Low Pressure ◽  
High Density ◽  
Chamber Wall

scholarly journals Role of ions in SiO2 deposition with pulsed and continuous helicon plasmas

2002 ◽  
Vol 74 (3) ◽  
pp. 401-405
Author(s):  
Christine Charles
Keyword(s):  
Low Temperature ◽  
Silicon Dioxide ◽  
Compressive Stress ◽  
Structural Properties ◽  
Film Growth ◽  
Low Pressure ◽  
Ion Flux ◽  
High Density ◽  
Silicon Dioxide Films

Good-quality silicon dioxide films have been deposited at low temperature (200 °C) using continuous and pulsed oxygen/silane plasmas coupled in a high-density, low-pressure helicon reactor. Although the total ion flux determines many of the structural properties of the deposited oxide, we have found that silicon-containing ions contribute to the film growth (up to 50 %) and appear to be responsible for the measured compressive stress.

Role of Reaction Products in F-Production in Low-Pressure, High-Density CF4Plasmas

1999 ◽  
Vol 38 (Part 1, No. 10) ◽  
pp. 6084-6089 ◽  
Author(s):  
Daiyu Hayashi ◽  
Masahiko Nakamoto ◽  
Noriharu Takada ◽  
Koichi Sasaki ◽  
Kiyoshi Kadota
Keyword(s):  
Low Pressure ◽  
High Density ◽  
Reaction Products

scholarly journals Importance of Apolipoprotein A-I and A-II Composition in HDL and Its Potential for Studying COVID-19 and SARS-CoV-2

Medicines ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 38
Author(s):  
Kyung-Hyun Cho
Keyword(s):  
Antiviral Activity ◽  
High Density ◽  
High Density Lipoproteins ◽  
Potent Antiviral Activity ◽  
Apolipoprotein A ◽  
Putative Role

The composition and properties of apolipoprotein (apo) A-I and apoA-II in high-density lipoproteins (HDL) might be critical to SARS-CoV-2 infection via SR-BI and antiviral activity against COVID-19. HDL containing native apoA-I showed potent antiviral activity, while HDL containing glycated apoA-I or other apolipoproteins did not. However, there has been no report to elucidate the putative role of apoA-II in the antiviral activity of HDL.

scholarly journals The Role of Preschool Hours in Achieving Physical Activity Recommendations for Preschoolers

Children ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 82
Author(s):  
Sara Lahuerta-Contell ◽  
Javier Molina-García ◽  
Ana Queralt ◽  
Vladimir E. Martínez-Bello
Keyword(s):  
Physical Activity ◽  
Early Childhood ◽  
School Environment ◽  
High Density ◽  
Childhood Education ◽  
Gender And Age ◽  
Sociodemographic Correlates ◽  
Physical Activity Recommendations ◽  
Activity Recommendations

Research on physical activity (PA) in different educational settings could elucidate which interventions promote a healthy school lifestyle in early childhood education (ECE). The aims of this study were: (a) to analyse the PA levels of preschoolers during school hours, as well as the rate of compliance with specific recommendations on total PA (TPA) and moderate-vigorous PA (MVPA); (b) to examine the role of structured movement sessions and recess time in the MVPA levels during school hours; (c) to evaluate the sociodemographic correlates of preschoolers and the school environment on MVPA behaviour during school hours. PA was evaluated with Actigraph accelerometers. Our main findings were that: (a) preschoolers engaged in very little TPA and MVPA during school hours; (b) children showed significantly higher MVPA levels on days with versus without structured movement sessions, and the contribution of the structured sessions to MVPA was significantly higher than that of recess time; (c) gender and age were associated with PA, and a high density of young children on the playground was associated with high levels of vigorous PA, whereas in the classroom, high density was associated with more sedentary behaviour. Structured PA could reduce the gap in achieving international recommendations.

Sign in / Sign up

Export Citation Format

Share Document