The Essence and Character of Student Youth Interethnic Tolerance Development Based on Material of Social Internet Networks

2021 ◽  
Vol 17 (3) ◽  
Keyword(s):  
Tolerance Development ◽  
Internet Networks

Constant light exposure impairs immune tolerance development in mice

2017 ◽  
Vol 86 (1) ◽  
pp. 63-70 ◽  
Author(s):  
Hiromi Mizutani ◽  
Risa Tamagawa-Mineoka ◽  
Yoichi Minami ◽  
Kazuhiro Yagita ◽  
Norito Katoh
Keyword(s):  
Immune Tolerance ◽  
Light Exposure ◽  
Constant Light ◽  
Tolerance Development

scholarly journals Acid tolerance in early colonizers of oral biofilms

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Gabriella Boisen ◽  
Julia R. Davies ◽  
Jessica Neilands
Keyword(s):  
Acid Tolerance ◽  
Low Ph ◽  
Salivary Proteins ◽  
Confocal Scanning Laser Microscopy ◽  
Planktonic Cells ◽  
Tolerance Development ◽  
Salivary Pellicle ◽  
Oral Biofilms ◽  
Acid Tolerant

Abstract Background In caries, low pH drives selection and enrichment of acidogenic and aciduric bacteria in oral biofilms, and development of acid tolerance in early colonizers is thought to play a key role in this shift. Since previous studies have focussed on planktonic cells, the effect of biofilm growth as well as the role of a salivary pellicle on this process is largely unknown. We explored acid tolerance and acid tolerance response (ATR) induction in biofilm cells of both clinical and laboratory strains of three oral streptococcal species (Streptococcus gordonii, Streptococcus oralis and Streptococcus mutans) as well as two oral species of Actinomyces (A. naeslundii and A. odontolyticus) and examined the role of salivary proteins in acid tolerance development. Methods Biofilms were formed on surfaces in Ibidi® mini flow cells with or without a coating of salivary proteins and acid tolerance assessed by exposing them to a challenge known to kill non-acid tolerant cells (pH 3.5 for 30 min) followed by staining with LIVE/DEAD BacLight and confocal scanning laser microscopy. The ability to induce an ATR was assessed by exposing the biofilms to an adaptation pH (pH 5.5) for 2 hours prior to the low pH challenge. Results Biofilm formation significantly increased acid tolerance in all the clinical streptococcal strains (P < 0.05) whereas the laboratory strains varied in their response. In biofilms, S. oralis was much more acid tolerant than S. gordonii or S. mutans. A. naeslundii showed a significant increase in acid tolerance in biofilms compared to planktonic cells (P < 0.001) which was not seen for A. odontolyticus. All strains except S. oralis induced an ATR after pre-exposure to pH 5.5 (P < 0.05). The presence of a salivary pellicle enhanced both acid tolerance development and ATR induction in S. gordonii biofilms (P < 0.05) but did not affect the other bacteria to the same extent. Conclusions These findings suggest that factors such as surface contact, the presence of a salivary pellicle and sensing of environmental pH can contribute to the development of high levels of acid tolerance amongst early colonizers in oral biofilms which may be important in the initiation of caries.

Effect of chemical sympathectomy on morphine antinociception and tolerance development in the rat

1973 ◽  
Vol 22 (21) ◽  
pp. 2769-2772 ◽  
Author(s):  
Hemendra N. Bhargava ◽  
Abdel-Halim Afifi ◽  
E.Leong Way
Keyword(s):  
Chemical Sympathectomy ◽  
Tolerance Development

Implementation of Virtual Classroom and Zoom Networks in Continuing Student Learning

2022 ◽  
Vol 3 (1) ◽  
Author(s):  
Nurbaiti Nurbaiti ◽  
Nadhrah Al Aflah ◽  
Supardi Supardi
Keyword(s):  
Virus Disease ◽  
Virtual Classroom ◽  
Learning Activity ◽  
The Internet ◽  
Activity System ◽  
Effective Learning ◽  
The World ◽  
Almost All ◽  
Internet Networks ◽  
Use Of Internet

Almost all corners of the world have been affected or affected by this Covid-19 virus disease, even some countries have set a lockdown status and other anticipations for the spread of the Covid-19 virus. The alternative used in this bold learning activity system is to utilize the internet network, namely the Zoom Meeting and Classroom application. This study aims to determine students' perceptions of the use of internet networks such as zoom meetings and classrooms used and how effective learning is during the Covid-19 pandemic. The research conducted here uses descriptive qualitative research methods. And the results of this study indicate that the zoom application is an application that is very effective and preferred by students because it is easier to use and very efficient when the learning process is bold and shows that some students who give their perception of the application used during learning that are brave are the Zoom Meeting application, namely the application. Zoom Meeting. by 66.7%, followed by the Google Meet application at 22.2% and the Classrom application at 11.1%.  

scholarly journals Robotic Control by Teleoperation and Delay Time Issues Using the Internet

2020 ◽  
Vol 14 ◽  
pp. 01-08
Author(s):  
Anuntachai Machim ◽  
Murray John Lawn ◽  
Ikuo Yamamoto
Keyword(s):  
Delay Time ◽  
Virtual Private Network ◽  
Critical Systems ◽  
Robotic Control ◽  
Daily Lives ◽  
Average Transmission ◽  
Set Up ◽  
Point To Point ◽  
Private Network ◽  
Internet Networks

Internet usage has become an essential part of our daily lives, it has become universal. The aim of this research is to consider existing Internet-based networks with regard to their support for the remote operation of robotic technology, in particular, looking at transmission speed and delay time as it relates to teleoperation. Currently dedicated connections are typically used when a high Quality of Service (QoS) is required for mission critical services or safety-critical systems (SCS), however such connections are very expensive to set up and maintain. Therefore, this study focuses on modifying existing internet networks in a manner to provide a better QoS with little additional cost. Using a number of microcontrollers, computers, and routers, two different protocols were used to control a robotic device remotely. Use of the Point-to-Point Tunnelling Protocol (PPTP) used for implementing a Virtual Private Network (VPN) was found to provide higher average transmission speeds compared to the using a Uniform Resource Locator (URL) which is a regular internet connection.

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