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Telefones celulares: Influência nos sistemas auditivo e vestibular
(2008-01-01)
Telecommunications systems emit radiofrequency, which is an invisible electromagnetic radiation. Mobile phones operate with microwaves (450900 MHz in the analog service, and 1,82,2 GHz in the digital service) very close ...
Cell phone usage and academic performance: An experiment
(Elsevier Ltd, 2018)
This paper makes use of an experiment to test the relationship between the actual average time students spend using their smartphones per day and academic performance. Differently from previous studies that rely on ...
Mobile health e excesso de peso: uma revisão sistemática
(Pan Amer Health Organization, 2014-05-01)
Objective. To evaluate the impact of using mobile health (mHealth) technologiesthe practice of medicine or public health through mobile devices, such as mobile phones-on the prevention of weight gain or treatment of ...
Genderstanding mobile telephony: Women, Men and their use of cellular phones in Jamaica
The mobile phone has emerged as the most widely-used communication device of the present era, with penetration levels among both men and women exceeding 94% in Jamaica. The cellular phone is also widely used across all ...
Telefones celulares: influência nos sistemas auditivo e vestibular
(ABORL-CCF Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial, 2008-02-01)
Os sistemas de telecomunicações emitem radiofreqüência, uma radiação eletromagnética invisível. Telefones celulares transmitem microondas (450900 MHz no sistema analógico e 1,82,2 GHz no sistema digital), muito próximo à ...
It's the phone, stupid: mobiles and murder
(National Bureau of Economic Research, 2019)
US homicide rates fell sharply in the early 1990s, a decade that also saw the mainstreaming of cell phones – a concurrence that may be more than a coincidence, we propose. Cell phones may have undercut turf-based street ...