scholarly journals RESEARCH AND EVALUATION OF THE ENERGY FLUX DENSITY OF THE MOBILE PHONE ELECTROMAGNETIC FIELD / MOBILIŲJŲ TELEFONŲ ELEKTROMAGNETINIO LAUKO ENERGIJOS SRAUTO TANKIO TYRIMAI IR ĮVERTINIMAS

2012 ◽  
Vol 5 (4) ◽  
pp. 462-467
Author(s):  
Pranas Baltrėnas ◽  
Raimondas Buckus
Keyword(s):  
Electromagnetic Field ◽  
Mobile Phone ◽  
Flux Density ◽  
Energy Flux ◽  
Text Message ◽  
Text Messages ◽  
Mobile Internet ◽  
Effective Protection ◽  
Allowable Limit ◽  
Energy Flux Density

The article analyses variations in the energy flux density of the electromagnetic field of 10 mobile phones depending on distance. The studies have been conducted using three modes: sending a text message, receiving a text message and connecting a mobile phone to the Internet. When text messages are received or sent from a mobile phone, the values of the energy flux density of the mobile phone electromagnetic field exceed the safe allowable limit and make 10 μW / cm². A distance of 10, 20 and 30 cm from a mobile phone is effective protection against the energy flux density of the electromagnetic field when writing texts, receiving messages or connecting to the mobile Internet. Santrauka Nagrinėjami 10 mobiliųjų telefonų elektromagnetinių laukų energijos srauto tankio kitimai priklausomai nuo atstumo. Tyrimai atliekami, kai iš mobiliojo telefono siunčiamas SMS, kai į mobilųjį telefoną yra siunčiamas SMS iš kito mobiliojo telefono, kai mobilusis telefonas jungiamas prie mobiliojo interneto. Mobiliųjų telefonų elektromagnetinio lauko energijos srauto tankio vertės, kai iš mobiliojo telefono siunčiamas ar gaunamas SMS, viršija saugią leistiną 10 µW/cm² normą. 10, 20, 30 cm atstumas nuo mobiliojo telefono – tinkama apsauga nuo elektromagnetinio lauko energijos srauto tankio viršijimo rašant ar gaunant SMS žinutes, jungiantis prie mobiliojo interneto. Mobiliųjų telefonų elektromagnetinių laukų energijos srauto tankio priklausomybė nuo atstumo pateikiama grafikais.

scholarly journals Waves in Microstructured Conducting Sheath Helix Embedded Optical Guides with Chiral Nihility and Chiral Materials

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
N. Iqbal ◽  
M. A. Baqir ◽  
P. K. Choudhury
Keyword(s):  
Boundary Conditions ◽  
Flux Density ◽  
Energy Flux ◽  
Pitch Angle ◽  
Electromagnetic Waves ◽  
The Core ◽  
Dispersion Behavior ◽  
Chiral Materials ◽  
Energy Flux Density

The paper deals with the sustainment of electromagnetic waves in circularly cylindrical optical guide with chiral nihility and chiral materials in the core and the clad sections, respectively. A perfectly conducting tightly wound helix is introduced at the core-clad interface. The eigenvalue relation for such a complex optical microstructured guide is deduced by applying suitable boundary conditions at the core-clad interface, and the dispersion behavior is analyzed by varying the pitch angle of helix. The sustainment of energy flux density in such optical guides is estimated under various structural conditions, and the density patterns in core-clad sections are anatomized analytically.

HYGIENIC ASSESSMENT OF ELECTROMAGNETIC RADIATION LEVELS OF BASE STATIONS,INSTALLED ON THE ROOFS OF BUILDINGS AND THE TERRITORY OF LAND PLOTS IN TASHKENT

2021 ◽  
Vol 2 (5) ◽  
pp. 5-11
Author(s):  
G. A. Tashpulatova ◽  
◽  
A. N. Krasavin
Keyword(s):  
Public Health ◽  
Electromagnetic Radiation ◽  
Flux Density ◽  
Energy Flux ◽  
Mobile Communications ◽  
Base Station ◽  
Base Stations ◽  
Cellular Communications ◽  
Measurement Results ◽  
Energy Flux Density

This article is about instrumental measurements of the FR EMR energy flux density. The measurement results were analyzed with the division of the data obtained by the purpose of buildings and the height of the antenna equipment placement, a hygienic assessment of the RF EMR levels created by the equipment of base stations of cellular communications, installed on the roofs of residential and public buildings and adjacent territories of Tashkent is given. A proposal is made on the rational placement of radio engineering facilities.Keywords:electromagnetic field; electromagnetic safety; base station for mobile communications; protection of public health; sanitary supervision

scholarly journals REDUCING THE INFLUENCE OF ENVIRONMENTAL FACTORS ON THE BENDING DEFORMATION OF CURED CARBON FIBER BY MICROWAVE PROCESSING

2021 ◽  
pp. 56-58
Author(s):  
I. V. Zlobina
Keyword(s):  
Electromagnetic Field ◽  
Composite Materials ◽  
Carbon Fiber ◽  
Environmental Factors ◽  
Flux Density ◽  
Environmental Conditions ◽  
Climatic Factors ◽  
Transverse Load ◽  
Bending Deformation ◽  
Energy Flux Density

The article discusses the results of a study of bending deformation and creep under transverse load of cured polymer composite materials (PCM), which were located for 8 months in full-scale environmental conditions in Saratov. It was found that being under the influence of natural climatic factors for the specified time leads to an increase in the bending deformation of samples from 13,5 to 25,4%, depending on the load. Processing in a microwave electromagnetic field with a frequency of 2450 MHz with an energy flux density of (17-18) x10 mW / cm for 2 minutes reduces bending deformation by (9-18)%, and creep - up to 4 times.

Children's Text Messaging and Traditional Literacy

2009 ◽  
pp. 492-504 ◽  
Author(s):  
Beverly Plester ◽  
Clare Wood ◽  
Samantha Bowyer
Keyword(s):  
Mobile Phone ◽  
Text Messaging ◽  
Reading Ability ◽  
School Achievement ◽  
Text Message ◽  
Text Messages ◽  
Standard English ◽  
Verbal Reasoning ◽  
Mobile Phone Use ◽  
Lack Of Knowledge

The authors present three investigations into pre-teen children’s text message language and measures of their standard literacy abilities. The children translated sentences, from standard English into text, and from text into standard English , and wrote text messages appropriate to a set of scenarios. They categorised text abbreviations used and calculated the proportion of abbreviations to total words. The children completed a questionnaire about their mobile phone use. Text messaging facility was positively associated with verbal reasoning, vocabulary, school achievement in English, and reading ability across the three studies. Texting provides opportunity for children to communicate in writing without the constraints of standard English, and we propose that the playful variants on words that they use in texting, and their ability to encode spoken slang graphically, show not a lack of knowledge of English, but a light hearted use of phonological and alphabetic decoding principles that also underpin standard English.

scholarly journals Exploring the Use of Mobile Health to Improve Community-Based Health and Nutrition Service Utilization in the Hills of Nepal: Qualitative Study (Preprint)

2020 ◽  
Author(s):  
Ajay Acharya ◽  
Kenda Cunningham ◽  
Shraddha Manandhar ◽  
Niva Shrestha ◽  
Mario Chen ◽  
...  
Keyword(s):  
Mobile Phone ◽  
Health Facility ◽  
Text Message ◽  
Text Messages ◽  
Decision Makers ◽  
Mhealth Intervention ◽  
Health And Nutrition ◽  
Nutrition Service ◽  
Health Facility Staff ◽  
Facility Staff

BACKGROUND With mobile phone coverage and ownership expanding globally, mobile health (mHealth) interventions are increasingly being used to improve coverage and quality of health and nutrition services. However, evidence on mHealth intervention feasibility and factors to consider during program design is limited in low- and middle-income countries like Nepal. OBJECTIVE This study aimed to examine the potential of using text messages to improve health and nutrition services by exploring mobile phone ownership and sharing; mobile phone use and skills; and interest, preferences, and limitations regarding mHealth interventions. METHODS We conducted 35 in-depth interviews with 1000-day women (the period from conception to a child’s second birthday), health facility staff, and female community health volunteers (FCHVs), as well as eight focus group discussions with health facility staff, FCHVs, and 1000-day household decision-makers (ie, husbands, mothers-in-law, and fathers-in-law). We also conducted a mobile phone skills test. We employed thematic analysis using framework matrices and analytical memos. RESULTS The study included 70 study participants, of whom 68 (97%) had a mobile phone, and phone sharing was uncommon. Use of text messages was most commonly reported by 1000-day women and health facility staff than household decision-makers and FCHVs. More than 8 in 10 participants (54/64, 84%) could dial numbers, and the majority (28/34, 82%) of 1000-day women, health facility staff, and male decision-makers could also read and write text messages. We found that 1000-day women preferred educational and reminder messages, whereas health facility staff and FCHVs desired educational and motivational messages. Participants suggested different types of texts for 1000-day women, families, FCHVs, and health facility staff, and reported less value for texts received from unknown phone numbers. CONCLUSIONS A text message–based mHealth intervention is acceptable in the hills of Nepal and has the potential to improve community health and nutrition service utilization, particularly by sending meeting reminders and by providing information. Our findings contribute to text message–based mHealth intervention design in under-resourced settings.

The influence of the number of shock waves and the energy flux density on the Raman spectrum of collagen type I from rat

Shock Waves ◽  
2019 ◽  
Vol 30 (2) ◽  
pp. 201-214
Author(s):  
J. J. Cárcamo-Vega ◽  
M. R. Brañes ◽  
A. M. Loske ◽  
M. M. Campos-Vallette
Keyword(s):  
Raman Spectrum ◽  
Shock Waves ◽  
Flux Density ◽  
Energy Flux ◽  
Collagen Type ◽  
Collagen Type I ◽  
Type I ◽  
Energy Flux Density
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