Noticias del portal de temática general Sólo el staff puede publicar aquí

Respuesta
 
Herramientas
  #1  
Viejo 17/01/16, 19:27:13
Array

[xs_avatar]
jorge_kai jorge_kai no está en línea
Administrador de HTCMania
 
Fecha de registro: abr 2007
Localización: Madrid
Mensajes: 150,163
Modelo de smartphone: Samsung Galaxy S23 Ultra
Tu operador: Movistar
noticia Funda anti-radiaciones, otro timo que no deberías comprar

Funda anti-radiaciones, otro timo que no deberías comprar



Leemos en elandroidelibre.com

Cada vez que la tecnología avanza, múltiples preocupaciones aparecen entre los usuarios. Cualquier nuevo utensilio que aparece y hace algo que nos parece magia, señalamos directamente que algo malo debe de tener. Con la popularización de las redes inalámbricas y los teléfonos móviles, son muchas las preocupaciones sobre los usuarios, especialmente en los temas referentes a la salud. Ante tantas dudas y preocupaciones, algunas empresas ven un filón por explotar, y sacan productos que en varias ocasiones no están del todo claro si realmente ayudan o solo sirven para tranquilizar la conciencia. Hoy conocemos un producto de este tipo.


leer más: elandroidelibre.com
Responder Con Cita


  #2  
Viejo 17/01/16, 19:27:49
Array

[xs_avatar]
jorge_kai jorge_kai no está en línea
Administrador de HTCMania
 
Fecha de registro: abr 2007
Localización: Madrid
Mensajes: 150,163
Modelo de smartphone: Samsung Galaxy S23 Ultra
Tu operador: Movistar
__________________
Administrador de HTCMania

Contactar vía Telegram
Responder Con Cita
  #3  
Viejo 17/01/16, 20:25:07
Array

[xs_avatar]
blackhawk_LA blackhawk_LA no está en línea
Vendedor verificado
· Votos compra/venta: (86)
 
Fecha de registro: nov 2010
Mensajes: 10,711
Modelo de smartphone: Galaxy S23 Ultra
Tu operador: Pepephone
A ver. Las radiaciones NO son inofensivas. ¿Por qué si no existe el valor SAR máximo?
Si alguien quiere ser ultra prudente y protegerse todo lo que pueda sin dejar de usar el móvil, esta funda le sirve.

Y calificarlo como un timo es bastante exagerado, espero que a la marca no les de por demandar a la página.
__________________
Responder Con Cita
  #4  
Viejo 17/01/16, 20:57:19
Array

[xs_avatar]
theusuario5000 theusuario5000 no está en línea
Usuario muy activo
 
Fecha de registro: jul 2014
Localización: españa,andalucia
Mensajes: 2,056
Modelo de smartphone: S21+ + watch 4 44mm/Iphone 15 pro max
Tu operador: Movistar
 Cita: Originalmente Escrito por blackhawk_LA Ver Mensaje
A ver. Las radiaciones NO son inofensivas. ¿Por qué si no existe el valor SAR máximo?
Si alguien quiere ser ultra prudente y protegerse todo lo que pueda sin dejar de usar el móvil, esta funda le sirve.

Y calificarlo como un timo es bastante exagerado, espero que a la marca no les de por demandar a la página.
Es un timo,si de verdad protegiera de las ondas,la funda sería inutil.,porque el móvil no tendría señal,así que es un timo.

Ademas,en caso de que funcione,de que te sirve teniendo cientos,incluso miles de dispositivos alrededor emitiendo radiación a lo largo del día.
__________________
A llorar a la lloreria
Responder Con Cita
Los siguientes 3 usuarios han agradecido a theusuario5000 su comentario:
[ Mostrar/Ocultar listado de agradecimientos ]
  #5  
Viejo 17/01/16, 21:10:23
Array

[xs_avatar]
_Fieldy_ _Fieldy_ no está en línea
Usuario muy activo
 
Fecha de registro: oct 2011
Mensajes: 1,932
Modelo de smartphone: samsung galaxy s scl
Tu operador: Yoigo
Claro que es un timo, y bien gordo. Hace no mucho tiempo hicieran un artículo sobre esta empresa en Naukas y los propios empresarios ingenieros ellos reconocían que lo hacían sabiendo que lo que hacen es engañar a la gente...
Responder Con Cita
  #6  
Viejo 17/01/16, 21:19:26
Array

[xs_avatar]
blackhawk_LA blackhawk_LA no está en línea
Vendedor verificado
· Votos compra/venta: (86)
 
Fecha de registro: nov 2010
Mensajes: 10,711
Modelo de smartphone: Galaxy S23 Ultra
Tu operador: Pepephone
 Cita: Originalmente Escrito por theusuario5000 Ver Mensaje
Es un timo,si de verdad protegiera de las ondas,la funda sería inutil.,porque el móvil no tendría señal,así que es un timo.

Ademas,en caso de que funcione,de que te sirve teniendo cientos,incluso miles de dispositivos alrededor emitiendo radiación a lo largo del día.
La funda sólo protege por un lado, de modo que no recibes las radiaciones directas.

Que sí, sera exagerado, una estupidez o lo que quieras, pero NO es un timo.
__________________
Responder Con Cita
  #7  
Viejo 17/01/16, 21:30:18
Array

[xs_avatar]
_Fieldy_ _Fieldy_ no está en línea
Usuario muy activo
 
Fecha de registro: oct 2011
Mensajes: 1,932
Modelo de smartphone: samsung galaxy s scl
Tu operador: Yoigo
 Cita: Originalmente Escrito por blackhawk_LA Ver Mensaje
La funda sólo protege por un lado, de modo que no recibes las radiaciones directas.

Que sí, sera exagerado, una estupidez o lo que quieras, pero NO es un timo.
 Cita:
En un momento dado alguien dice “luego vendéis algo que no sirve para nada, salvo para sacar dinero a gente asustada,” a lo que @emsafePaula responde con rotundidad:

“en ningún momento hemos dicho lo contrario”
Ir al link original: http://naukas.com/2015/08/24/informe-pelicano-em-safe



Responder Con Cita
  #8  
Viejo 17/01/16, 21:52:48
Array

[xs_avatar]
blackhawk_LA blackhawk_LA no está en línea
Vendedor verificado
· Votos compra/venta: (86)
 
Fecha de registro: nov 2010
Mensajes: 10,711
Modelo de smartphone: Galaxy S23 Ultra
Tu operador: Pepephone
Gracias por el enlace, es interesante. Parece que efectivamente sirven para menos aun de lo que parece.

En todo caso, aunque la discusión no sea exactamente esa en este caso, creo que no se debe infravalorar el potencial efecto perjudicial de la exposición exhaustiva a radiaciones electromagnéticas a la que estamos sometidos actualmente.
__________________
Responder Con Cita
  #9  
Viejo 17/01/16, 22:38:26
Array

[xs_avatar]
Fitoma
Usuario invitado
 
Mensajes: n/a

 Cita: Originalmente Escrito por blackhawk_LA Ver Mensaje
A ver. Las radiaciones NO son inofensivas. ¿Por qué si no existe el valor SAR máximo?
¿Pafa que algo sea peligroso tiene que haber un valor máximo? Bébete 30 litros de agua en un día y luego dime si es inocuo.


Es un timo como los plastiquillos esos que te protejen los ojos de las pantallas. Un negocio basado en la ignorancia y su hijo, el miedo.

Pero oye, mientras hay tontos con dinero...

P.D: compraros un paraguas de plomo que el sol os está friendo a base de bien con radiaciones electromagnéticas infinítamente más potentes.

Última edición por Fitoma Día 17/01/16 a las 22:42:03.
Responder Con Cita
  #10  
Viejo 17/01/16, 23:02:29
Array

[xs_avatar]
fenix80 fenix80 no está en línea
Usuario muy activo
 
Fecha de registro: ene 2010
Localización: Cantabria
Mensajes: 1,722
Modelo de smartphone: uno chino
Tu operador: Vodafone
Está funda es un fraude (que es ligeramente distinto a un timo).
Las microondas pueden ser malas, los primeros experimentos se usaban para comunicaciones y aprendieron que calentaban la comida por las malas, un científico notó que se derritió una chocolatina que tenía en el bolsillo y muchos de ellos acabaron con algún problema médico.
Pero esta funda bloquea la señal, por lo que el móvil tiene que aumentar la potencia de emisión, por lo que al final es lo mismo con funda que sin ella.
Como dice el artículo el que no quiera ondas que no use el teléfono y se aleje de antenas repetidoras.
Responder Con Cita
  #11  
Viejo 17/01/16, 23:50:05
Array

[xs_avatar]
zadock zadock no está en línea
Equipo de HTCMania
· Votos compra/venta: (5)
 
Fecha de registro: feb 2011
Mensajes: 51,119
Modelo de smartphone: Mi 9T Pro
Tu operador: Movistar
Ya solo denominándola "funda anti radiaciones" me parece un fraude
__________________
Responder Con Cita
  #12  
Viejo 17/01/16, 23:56:45
Array

[xs_avatar]
theusuario5000 theusuario5000 no está en línea
Usuario muy activo
 
Fecha de registro: jul 2014
Localización: españa,andalucia
Mensajes: 2,056
Modelo de smartphone: S21+ + watch 4 44mm/Iphone 15 pro max
Tu operador: Movistar
 Cita: Originalmente Escrito por blackhawk_LA Ver Mensaje
La funda sólo protege por un lado, de modo que no recibes las radiaciones directas.

Que sí, sera exagerado, una estupidez o lo que quieras, pero NO es un timo.
No recibes la de tu móvil,pero recibes la de los móviles d elas personas que tienes al lado,así que es inutil,es como esperar no mojarse si te duchas con un paraguas,a lo mejor el agua que cae no te moja,pero igualmente te salpica al llegar al suelo.
__________________
A llorar a la lloreria

Última edición por theusuario5000 Día 18/01/16 a las 00:03:04. Razón: El corrector del móvil ��
Responder Con Cita
  #13  
Viejo 18/01/16, 00:01:54
Array

[xs_avatar]
blackhawk_LA blackhawk_LA no está en línea
Vendedor verificado
· Votos compra/venta: (86)
 
Fecha de registro: nov 2010
Mensajes: 10,711
Modelo de smartphone: Galaxy S23 Ultra
Tu operador: Pepephone
 Cita: Originalmente Escrito por Fitoma Ver Mensaje
¿Pafa que algo sea peligroso tiene que haber un valor máximo? Bébete 30 litros de agua en un día y luego dime si es inocuo.


Es un timo como los plastiquillos esos que te protejen los ojos de las pantallas. Un negocio basado en la ignorancia y su hijo, el miedo.

Pero oye, mientras hay tontos con dinero...

P.D: compraros un paraguas de plomo que el sol os está friendo a base de bien con radiaciones electromagnéticas infinítamente más potentes.
Vaya ejemplos que pones. No tienen nada que ver .
El valor SAR tiene un máximo legal porque no se ha demostrado inocuo, y porque se aplica el PRINCIPIO DE PRECAUCIÓN. Si alguien quiere llevar ese principio mucho más a rajatabla, tiene sentido.

Que la funda cumpla mejor o peor su objetivo es otro tema. Para saberlo habría que pagar un estudio.

PD: No vayas de listo.

Sent from my HUAWEI MT7-L09 using Tapatalk
__________________
Responder Con Cita
  #14  
Viejo 18/01/16, 01:30:41
Array

[xs_avatar]
Vangonaj Vangonaj no está en línea
Usuario muy activo
 
Fecha de registro: oct 2012
Mensajes: 8,580
Modelo de smartphone: Moto g 4/Motorola Moto G 2014/Samsung galaxy ace 2
Tu operador: Yoigo
Es que hay que ser tolai, para caer en una trola asi.

Enviado desde mi XT1069 mediante Tapatalk
__________________
Responder Con Cita
  #15  
Viejo 18/01/16, 02:10:08
Array

[xs_avatar]
adric_ct adric_ct no está en línea
Miembro del foro
 
Fecha de registro: oct 2014
Localización: Cartagena
Mensajes: 463
Modelo de smartphone: xperia U
Tu operador: Amena
Responder Con Cita
  #16  
Viejo 18/01/16, 09:23:48
Array

[xs_avatar]
Fitoma
Usuario invitado
 
Mensajes: n/a

 Cita: Originalmente Escrito por blackhawk_LA Ver Mensaje
Que la funda cumpla mejor o peor su objetivo es otro tema. Para saberlo habría que pagar un estudio.
Si la funda hiciera lo que promete te dejaría sin cobertura. No creo que haya mucha gente que vaya con el móvil por ahí sin conectar a la red. Para eso llevas un taco de madera que es más barato.

El día que haya un estudio independiente y con validez científica que demuestre que las radiaciones ambientales actuales, que son muchas más que la del móvil, son perjudiciales me compro una funda de esas y me la como. Ya te digo que eso no va a suceder.
Responder Con Cita
  #17  
Viejo 18/01/16, 14:37:41
Array

[xs_avatar]
blackhawk_LA blackhawk_LA no está en línea
Vendedor verificado
· Votos compra/venta: (86)
 
Fecha de registro: nov 2010
Mensajes: 10,711
Modelo de smartphone: Galaxy S23 Ultra
Tu operador: Pepephone
 Cita: Originalmente Escrito por Fitoma Ver Mensaje
Si la funda hiciera lo que promete te dejaría sin cobertura. No creo que haya mucha gente que vaya con el móvil por ahí sin conectar a la red. Para eso llevas un taco de madera que es más barato.
Hay que ver el trabajo que cuesta hablar sabiendo de lo que se habla. Ni te has leído el artículo.
Efectivamente, la funda NO te deja sin cobertura, porque sólo protege uno de los laterales (el que expones al cuerpo) Si eso provoca un descenso suficiente de la cobertura como para que el móvil tenga que utilizar mayor potencia y al final acabas más expuesto a las radiaciones, es lo que habría que estudiar. En principio, no tiene por qué, ya que la recepción de la señal mayoritariamente seguiría llegando desde el lateral que no está cubierto.

 Cita: Originalmente Escrito por Fitoma Ver Mensaje
El día que haya un estudio independiente y con validez científica que demuestre que las radiaciones ambientales actuales, que son muchas más que la del móvil, son perjudiciales me compro una funda de esas y me la como. Ya te digo que eso no va a suceder.
¿Quieres uno, o diez? ¿A qué te refieres con estudio "independiente"; sugieres que hay algún tipo de lobby con intereses en acabar con la industria de la telefonía móvil?

Aquí tienes los abstract de varios artículos (algunos son de pago)
Mobile phone and cordless phone use and the risk for glioma – Analysis of pooled case-control studies in Sweden, 1997–2003 and 2007–2009 - Pathophysiology (el factor de impacto es medio-bajo)
(Click para mostrar/ocultar)
Abstract
We made a pooled analysis of two case-control studies on malignant brain tumours with patients diagnosed during 1997–2003 and 2007–2009. They were aged 20–80 years and 18–75 years, respectively, at the time of diagnosis. Only cases with histopathological verification of the tumour were included. Population-based controls, matched on age and gender, were used. Exposures were assessed by questionnaire. The whole reference group was used in the unconditional regression analysis adjusted for gender, age, year of diagnosis, and socio-economic index. In total, 1498 (89%) cases and 3530 (87%) controls participated. Mobile phone use increased the risk of glioma, OR = 1.3, 95% CI = 1.1–1.6 overall, increasing to OR = 3.0, 95% CI = 1.7–5.2 in the >25 year latency group. Use of cordless phones increased the risk to OR = 1.4, 95% CI = 1.1–1.7, with highest risk in the >15–20 years latency group yielding OR = 1.7, 95% CI = 1.1–2.5. The OR increased statistically significant both per 100 h of cumulative use, and per year of latency for mobile and cordless phone use. Highest ORs overall were found for ipsilateral mobile or cordless phone use, OR = 1.8, 95% CI = 1.4–2.2 and OR = 1.7, 95% CI = 1.3–2.1, respectively. The highest risk was found for glioma in the temporal lobe. First use of mobile or cordless phone before the age of 20 gave higher OR for glioma than in later age groups.


Cell phone radiation effects on cytogenetic abnormalities of oral mucosal cells. - Brazilian Oral Research (factor de impacto 0,9 medio-bajo)
(Click para mostrar/ocultar)
The aim of this study was to evaluate the effects of exposure to cell phone electromagnetic radiation on the frequency of micronuclei, broken eggs cells, binucleated cells, and karyorrhexis in epithelial cells of the oral mucosa. The sample was composed of 60 cell phone users, who were non-smokers and non-drinkers, and had no clinically visible oral lesions. Cells were obtained from anatomical sites with the highest incidence of oral cancer: lower lip, border of the tongue, and floor of the mouth. The Feulgen reaction was used for quantification of nuclear anomalies in 1,000 cells/slide. A slightly increase in the number of micronucleated cells in the lower lip and in binucleated cells on the floor of the mouth was observed in individuals who used their phones > 60 minutes/week. The analysis also revealed an increased number of broken eggs in the tongue of individuals owning a cell phone for over eight years. Results suggest that exposure to electromagnetic waves emitted by cell phones can increase nuclear abnormalities in individuals who use a cell phone for more than 60 minutes per week and for over eight years. Based on the present findings, we suggest that exposure to electromagnetic radiation emitted by cell phones may interfere with the development of metanuclear anomalies. Therefore, it is demonstrated that, despite a significant increase in these anomalies, the radiation emitted by cell phones among frequent users is within acceptable physiological limits.


Tumor promotion by exposure to radiofrequency electromagnetic fields below exposure limits for humans - International Journal of Radiation Biology (factor de impacto 1,7)
(Click para mostrar/ocultar)
The vast majority of in vitro and in vivo studies did not find cancerogenic effects of exposure to electromagnetic fields (RF-EMF), i.e. emitted by mobile phones and base stations. Previously published results from a pilot study with carcinogen-treated mice, however, suggested tumor-promoting effects of RF-EMF (Tillmann et al., 2010). We have performed a replication study using higher numbers of animals per group and including two additional exposure levels (0 (sham), 0.04, 0.4 and 2 W/kg SAR). We could confirm and extend the originally reported findings. Numbers of tumors of the lungs and livers in exposed animals were significantly higher than in sham-exposed controls. In addition, lymphomas were also found to be significantly elevated by exposure. A clear dose-response effect is absent. We hypothesize that these tumor-promoting effects may be caused by metabolic changes due to exposure. Since many of the tumor-promoting effects in our study were seen at low to moderate exposure levels (0.04 and 0.4 W/kg SAR), thus well below exposure limits for the users of mobile phones, further studies are warranted to investigate the underlying mechanisms. Our findings may help to understand the repeatedly reported increased incidences of brain tumors in heavy users of mobile phones.


Mobile phone radiation causes brain tumors and should be classified as a probable human carcinogen (2A) (review) - International Journal of Oncology (factor de impacto 3)
(Click para mostrar/ocultar)
Abstract
Quickly changing technologies and intensive uses of radiofrequency electromagnetic field (RF-EMF)‑emitting phones pose a challenge to public health. Mobile phone users and uses and exposures to other wireless transmitting devices (WTDs) have increased in the past few years. We consider that CERENAT, a French national study, provides an important addition to the literature evaluating the use of mobile phones and risk of brain tumors. The CERENAT finding of increased risk of glioma is consistent with studies that evaluated use of mobile phones for a decade or longer and corroborate those that have shown a risk of meningioma from mobile phone use. In CERENAT, exposure to RF‑EMF from digitally enhanced cordless telephones (DECTs), used by over half the population of France during the period of this study, was not evaluated. If exposures to DECT phones could have been taken into account, the risks of glioma from mobile phone use in CERENAT are likely to be higher than published. We conclude that radiofrequency fields should be classified as a Group 2A ̔probable̓ human carcinogen under the criteria used by the International Agency for Research on Cancer (Lyon, France). Additional data should be gathered on exposures to mobile and cordless phones, other WTDs, mobile phone base stations and Wi‑Fi routers to evaluate their impact on public health. We advise that the as low as reasonable achievable (ALARA) principle be adopted for uses of this technology, while a major cross‑disciplinary effort is generated to train researchers in bioelectromagnetics and provide monitoring of potential health impacts of RF‑EMF.


Investigation of the effects of distance from sources on apoptosis, oxidative stress and cytosolic calcium accumulation via TRPV1 channels induced by mobile phones and Wi-Fi in breast cancer cells. - Biochimica et Biophysica Acta (factor de impacto 5)
(Click para mostrar/ocultar)
TRPV1 is a Ca2+ permeable channel and gated by noxious heat, oxidative stress and capsaicin (CAP). Some reports have indicated that non-ionized electromagnetic radiation (EMR)-induces heat and oxidative stress effects. We aimed to investigate the effects of distance from sources on calcium signaling, cytosolic ROS production, cell viability, apoptosis, plus caspase-3 and -9 values induced by mobile phones and Wi-Fi in breast cancer cells MCF-7 human breast cancer cell lines were divided into A, B, C and D groups as control, 900, 1800 and 2450 MHz groups, respectively. Cells in Group A were used as control and were kept in cell culture conditions without EMR exposure. Groups B, C and D were exposed to the EMR frequencies at different distances (0 cm, 1 cm, 5 cm, 10 cm, 20 cm and 25 cm) for 1h before CAP stimulation. The cytosolic ROS production, Ca2+ concentrations, apoptosis, caspase-3 and caspase-9 values were higher in groups B, C and D than in A group at 0 cm, 1 cm and 5 cm distances although cell viability (MTT) values were increased by the distances. There was no statistically significant difference in the values between control, 20 and 25 cm. Wi-Fi and mobile phone EMR placed within 10 cm of the cells induced excessive oxidative responses and apoptosis via TRPV1-induced cytosolic Ca2+ accumulation in the cancer cells. Using cell phones and Wi-Fi sources which are farther away than 10 cm may provide useful protection against oxidative stress, apoptosis and overload of intracellular Ca2+. This article is part of a Special Issue entitled: Membrane channels and transporters in cancers.


Effects of extremely low frequency electromagnetic field (ELF-EMF) on catalase, cytochrome P450 and nitric oxide synthase in erythro-leukemic cells. - Life sciences (factor de impacto 2,7)
(Click para mostrar/ocultar)
AIMS:
Extremely low frequency electromagnetic fields (ELF-EMFs) are widely employed in electrical appliances and different equipment such as television sets, mobile phones, computers and microwaves. The molecular mechanism through which ELF-EMFs can influence cellular behavior is still unclear. A hypothesis is that ELF-EMFs could interfere with chemical reactions involving free radical production. Under physiologic conditions, cells maintain redox balance through production of ROS/RNS and antioxidant molecules. The altered balance between ROS generation and elimination plays a critical role in a variety of pathologic conditions including neurodegenerative diseases, aging and cancer. Actually, there is a disagreement as to whether there is a causal or coincidental relationship between ELF-EMF exposure and leukemia development. Increased ROS levels have been observed in several hematopoietic malignancies including acute and chronic myeloid leukemias.
MAIN METHODS:
In our study, the effect of ELF-EMF exposure on catalase, cytochrome P450 and inducible nitric oxide synthase activity and their expression by Western blot analysis in myelogenous leukemia cell line K562 was evaluated.
KEY FINDINGS:
A significant modulation of iNOS, CAT and Cyt P450 protein expression was recorded as a result of ELF-EMF exposure in both phorbol 12-myristate 13-acetate (PMA)-stimulated and non-stimulated cell lines. Modulation in kinetic parameters of CAT, CYP-450 and iNOS enzymes in response to ELF-EMF indicates an interaction between the ELF-EMF and the enzymological system.
SIGNIFICANCE:
These new insights might be important in establishing a mechanistic framework at the molecular level within which the possible effects of ELF-EMF on health can be understood.


Effects of GSM modulated radio-frequency electromagnetic radiation on permeability of blood-brain barrier in male & female rats. - Journal of Chemical Neuroanatomy (factor de impacto 2,3)
(Click para mostrar/ocultar)
With the increased use of mobile phones, their biological and health effects have become more important. Usage of mobile phones near the head increases the possibility of effects on brain tissue. This study was designed to investigate the possible effects of pulse modulated 900MHz and 1800MHz radio-frequency radiation on the permeability of blood-brain barrier of rats. Study was performed with 6 groups of young adult male and female wistar albino rats. The permeability of blood-brain barrier to intravenously injected evans blue dye was quantitatively examined for both control and radio-frequency radiarion exposed groups. For male groups; Evans blue content in the whole brain was found to be 0.08±0.01mg% in the control, 0.13±0.03mg% in 900MHz exposed and 0.26±0.05mg% in 1800MHz exposed animals. In both male radio-frequency radiation exposed groups, the permeability of blood-brain barrier found to be increased with respect to the controls (p<0.01). 1800MHz pulse modulated radio-frequency radiation exposure was found more effective on the male animals (p<0.01). For female groups; dye contents in the whole brains were 0.14±0.01mg% in the control, 0.24±0.03mg% in 900MHz exposed and 0.14±0.02mg% in 1800MHz exposed animals. No statistical variance found between the control and 1800MHz exposed animals (p>0.01). However 900MHz pulse modulated radio-frequency exposure was found effective on the permeability of blood-brain barrier of female animals. Results have shown that 20minutes pulse modulated radio-frequency radiation exposure of 900MHz and 1800MHz induces an effect and increases the permeability of blood-brain barrier of male rats. For females, 900MHz was found effective and it could be concluded that this result may due to the physiological differences between female and male animals. The results of this study suggest that mobile phone radation could lead to increase the permeability of blood-brain barrier under non-thermal exposure levels. More studies are needed to demonstrate the mechanisms of that breakdown.


Electromagnetic field and brain development. - Journal of Chemical Neuroanatomy
(Click para mostrar/ocultar)
Rapid advances in technology involve increased exposures to radio-frequency/microwave radiation from mobile phones and other wireless transmitting devices. As cell phones are held close to the head during talking and often stored next to the reproductive organs, studies are mostly focused on the brain. In fact, more research is especially needed to investigate electromagnetic field (EMF)'s effects on the central nervous system (CNS). Several studies clearly demonstrate that EMF emitted by cell phones could affect a range of body systems and functions. Recent work has demonstrated that EMF inhibit the formation and differentiation of neural stem cells during embryonic development and also affect reproductive and neurological health of adults that have undergone prenatal exposure. The aim of this review is to discuss the developing CNS and explain potential impacts of EMF on this system.


Association of Exposure to Radio-Frequency Electromagnetic Field Radiation (RF-EMFR) Generated by Mobile Phone Base Stations with Glycated Hemoglobin (HbA1c) and Risk of Type 2 Diabetes Mellitus. - International Journal of Environmental Research and Public Health (factor de impacto 2)
(Click para mostrar/ocultar)
Installation of mobile phone base stations in residential areas has initiated public debate about possible adverse effects on human health. This study aimed to determine the association of exposure to radio frequency electromagnetic field radiation (RF-EMFR) generated by mobile phone base stations with glycated hemoglobin (HbA1c) and occurrence of type 2 diabetes mellitus. For this study, two different elementary schools (school-1 and school-2) were selected. We recruited 159 students in total; 96 male students from school-1, with age range 12-16 years, and 63 male students with age range 12-17 years from school-2. Mobile phone base stations with towers existed about 200 m away from the school buildings. RF-EMFR was measured inside both schools. In school-1, RF-EMFR was 9.601 nW/cm² at frequency of 925 MHz, and students had been exposed to RF-EMFR for a duration of 6 h daily, five days in a week. In school-2, RF-EMFR was 1.909 nW/cm² at frequency of 925 MHz and students had been exposed for 6 h daily, five days in a week. 5-6 mL blood was collected from all the students and HbA1c was measured by using a Dimension Xpand Plus Integrated Chemistry System, Siemens. The mean HbA1c for the students who were exposed to high RF-EMFR was significantly higher (5.44 ± 0.22) than the mean HbA1c for the students who were exposed to low RF-EMFR (5.32 ± 0.34) (p = 0.007). Moreover, students who were exposed to high RF-EMFR generated by MPBS had a significantly higher risk of type 2 diabetes mellitus (p = 0.016) relative to their counterparts who were exposed to low RF-EMFR. It is concluded that exposure to high RF-EMFR generated by MPBS is associated with elevated levels of HbA1c and risk of type 2 diabetes mellitus.


Long-term exposure to electromagnetic radiation from mobile phones and Wi-Fi devices decreases plasma prolactin, progesterone, and estrogen levels but increases uterine oxidative stress in pregnant rats and their offspring. - endocrine (factor de impacto 2)
(Click para mostrar/ocultar)
Abstract
We investigated the effects of mobile phone (900 and 1800 MHz)- and Wi-Fi (2450 MHz)-induced electromagnetic radiation (EMR) exposure on uterine oxidative stress and plasma hormone levels in pregnant rats and their offspring. Thirty-two rats and their forty newborn offspring were divided into the following four groups according to the type of EMR exposure they were subjected to: the control, 900, 1800, and 2450 MHz groups. Each experimental group was exposed to EMR for 60 min/day during the pregnancy and growth periods. The pregnant rats were allowed to stand for four generations (total 52 weeks) before, plasma and uterine samples were obtained. During the 4th, 5th, and 6th weeks of the experiment, plasma and uterine samples were also obtained from the developing rats. Although uterine lipid peroxidation increased in the EMR groups, uterine glutathione peroxidase activity (4th and 5th weeks) and plasma prolactin levels (6th week) in developing rats decreased in these groups. In the maternal rats, the plasma prolactin, estrogen, and progesterone levels decreased in the EMR groups, while the plasma total oxidant status, and body temperatures increased. There were no changes in the levels of reduced glutathione, total antioxidants, or vitamins A, C, and E in the uterine and plasma samples of maternal rats. In conclusion, although EMR exposure decreased the prolactin, estrogen, and progesterone levels in the plasma of maternal rats and their offspring, EMR-induced oxidative stress in the uteri of maternal rats increased during the development of offspring. Mobile phone- and Wi-Fi-induced EMR may be one cause of increased oxidative uterine injury in growing rats and decreased hormone levels in maternal rats. TRPV1 cation channels are the possible molecular pathways responsible for changes in the hormone, oxidative stress, and body temperature levels in the uterus of maternal rats following a year-long exposure to electromagnetic radiation exposure from mobile phones and Wi-Fi devices. It is likely that TRPV1-mediated Ca2+ entry in the uterus of pregnant rats involves accumulation of oxidative stress and opening of mitochondrial membrane pores that consequently leads to mitochondrial dysfunction, substantial swelling of the mitochondria with rupture of the outer membrane and release of oxidants such as superoxide (O2 -) and hydrogen peroxide (H2O2). The superoxide radical is converted to H2O2 by superoxide dismutase (SOD) enzyme. Glutathione peroxidase (GSH-Px) is an important antioxidant enzyme for removing lipid hydroperoxides and hydrogen peroxide and it catalyzes the reduction of H2O2 to water.


Y sí,por supuesto que hay otros cientos de estudios que no han encontrado relación significativa. Pero como mínimo hay un riesgo probable. Ni paranoia exagerada, ni tampoco inocuidad demostrada. Algunos creen que con saber que no es radiación ionizante ya es inofensiva porque no puede alterar el adn. La biología es bastante más compleja.
Es bastante probable que se termine asociando la exposición a radiación electromágnetica con un incremento (mayor o menor, está claro que no va a ser del 500% ) de determinados tipos de cáncer u otras enfermedades. Para eso se necesitan unos cuantos años y más investigaciones, para concretar. Pero todos los indicios están ahí.
__________________
Responder Con Cita
Gracias de parte de:
  #18  
Viejo 20/01/16, 03:16:50
Array

[xs_avatar]
rodrigoboss rodrigoboss no está en línea
Usuario muy activo
· Votos compra/venta: (1)
 
Fecha de registro: dic 2015
Localización: mexico, chiapas !
Mensajes: 1,174
Modelo de smartphone: lenovo k5
Tu operador: Otra
que gran fiasco la verdad lastima por aquellos que compraron estas fundas, mercadotecnia sin escrupulos
Responder Con Cita
Respuesta

Estás aquí
Regresar   Portal | Indice > HTCMania > Discusión general sobre smartphones y tecnología > Noticias del portal de temática general



Hora actual: 19:28:24 (GMT +1)



User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2026 DragonByte Technologies Ltd.

Contactar por correo / Contact by mail / 邮件联系 /