Jovens em web rádio: representações sociais sobre papiloma vírus humano

RESUMOObjetivo: apreender as representações sociais de jovens escolares acerca do papilomavírus humano por meio de uma web rádio. Método: trata-se de um estudo quantitativo, exploratório-descritivo, realizado por meio de registros documentais do programa “Em sintonia com a saúde”, da web rádio Ajir, de uma universidade, com 215 jovens de escolas públicas. Organizaram-se os dados pelo software Iramuteq, analisando-os com base na Teoria de Representações Sociais e na literatura relacionada. Apresentaram-se os resultados em forma de figuras. Resultados: evidenciou-se o conhecimento dos jovens acerca da temática e dos fatores de proteção e de risco. Conclusão: verificam-se percepções diferenciadas a respeito da doença, carregadas de inúmeras dúvidas, configurando a necessidade de diálogo com os jovens, sendo a web rádio uma ferramenta de importante alcance na educação em saúde. Descritores: Juventudes; Escola; Papilomavírus Humano; Enfermagem; Saúde do Adolescente; Tecnologia.ABSTRACT Objective: to understand the social representations of schoolchildren about human papillomavirus through a web radio. Method: this is a quantitative, exploratory-descriptive study carried out through documentary records of the program "In harmony with health", from the web radio Ajir, of a university, with 215 young people from public schools. Data was organized by Iramuteq software, analyzing them based on Social Representation Theory and related literature. The results were presented in the form of figures. Results: the knowledge of young people about the theme and the protection and risk factors was evidenced. Conclusion: there are different perceptions about the disease, loaded with numerous doubts, configuring the need for dialogue with young people, and the radio web is an important tool in health education. Descritores: Youths; School; Human Papillomavirus; Nursing; Adolescent Health; Technology.RESUMEN Objetivo: aprehender las representaciones sociales de jóvenes escolares acerca del papiloma virus humano a través de una web radio. Método: se trata de un estudio cuantitativo, exploratorio-descriptivo, realizado por medio de registros documentales del programa "En sintonía con la salud", de la web radio Ajir, de una universidad, con 215 jóvenes de escuelas públicas. Se organizaron los datos por el software Iramuteq, analizándolos con base en la Teoría de Representaciones Sociales y en la literatura relacionada. Se presentaron los resultados en forma de figuras. Resultados: se evidenció el conocimiento de los jóvenes acerca de la temática y de los factores de protección y de riesgo. Conclusión: se observan percepciones diferenciadas respecto de la enfermedad, cargadas de innumerables dudas, configurando la necesidad de diálogo con los jóvenes, siendo la web radio una herramienta de importante alcance en la educación en salud. Descritores: Jóvenes; La Escuela; Papilomavirus Humano; Enfermería; Salud del Adolescente; Tecnología.

Design and Implementation of Digital Communication Platform Based on FPGA/DSP

A method to design and implement digital communication platform was in introduced in this paper. The platform based on software radio method can change modulation method conveniently without the change of hardware system because it used FPGA and DSP to do modulation and signal process. The QPSK modulation and demodulation was implemented in the platform to test this platform.

Effect of Aggregate Pre-Wetting and Air-Entraining Agent on Durability of Lightweight Aggregate Concrete

Rapid carbonation test and gas permeability radio method are used to study the durability of lightweight aggregate concrete. The concrete includes foam,lightweight aggregate，pre-wetting and air entraining. The test results show that The combined-effect of air entraining agent(AEA)and aggregate pre-wetting can increase permeability. The anti-carbonation capacity of pre-wetting and air entraining lightweight aggregate concrete is 40% greater than that of ordinary concrete.gas permeability radio of pre-wetting and air entraining lightweight aggregate concrete is half of that foam concrete and expanded pearlite concrete.

Radio measurements of constant variation, and perspectives with ALMA

In the radio domain, absorption lines in front of quasars of CO, HI, OH, HCO+, HCN, up to NH3 and CII are providing interesting constraints on fundamental constant variation (α and μ). With more absorbing systems, and a wider redshift range, they could be more competitive than optical studies. This could come with ALMA, with more than one order of magnitude in sensitivity.Up to now, at intermediate and high redshift, between z = 0.25 to z = 0.89, only four absorption lines systems have been detected in the millimeter range and a fifth system at 0.765, at the OH-18cm lines (Kanekar et al. 2005). Out of these 5 systems, 3 are intervening lensing galaxies (and the background quasar is multiply imaged), and 2 correspond to an absorption of the host (PKS1413+135, B3-1504+377, for an overview see Combes & Wiklind 1996; Wiklind & Combes 1994 to 1998).A global comparison of all molecular lines observed with the HI-21cm absorption lines in PKS1413 and B0218 systems, the two narrowest line systems, have given quite stringent constraints on y = α2gp μ, Δ y/y = (-0.20 ± 0.44) 10−5 and Δ y/y = (-0.16 ± 0.54) 10−5 respectively (Murphy et al. 2001). The precision is comparable to the MM method (Murphy et al. 2003), with a limited number of absorbing systems.The high sensitivity if the NH3 inversion lines to variation in the μ ratio (Flambaum & Kozlov 2007) was used by Henkel et al. (2009) in a recent multi-line study of PKS1830 at z ~ 0.9, and Murphy et al. (2008) for B0218 at z ~ 0.7. They find a limit of Δμ/μ < 1.4 10−6 and Δμ/μ < 1.8 10−6 respectively.Clearly, the radio method suffers from the rarity of the objects, and the fact that they have not yet been discovered at high redshift. The main caveats are that the lines compared come from different molecules, which might have intrinsic velocity offsets, due to several reasons, chemistry, excitation, temperature, density etc. . . When very different frequencies are compared (HI to CO for instance), the background continuum source has different sizes, and the absorbing medium is not the same. Also, the continuum source varies in both intensity and shape, and the compared lines are not always observed simultaneously. Only large statistics could smooth the errors down.On the positive side, the radio domain is favoured by the high spectral resolution and the very narrow lines due to cold gas, the exquisite precision of the frequency calibration, and the well-known rest frequencies. Also, the sensitivity of the line position to the variation of constants is much higher (by a factor 100 for NH3).Fortunately, the sensitivity of ALMA will be able to detect many more continuum sources, to search for absorption lines, and at larger redshifts. ALMA will have a much wider bandwidth, allowing the search of absorption, even if not previously detected in the optical or HI-21cm. The redshift will be obtained directly in the millimeter.It is possible to predict the number of continuum sources that can be selected as targets for absorption searches with ALMA. The density of flat-spectrum quasars has been shown to follow the same curve as optical quasars, a curve peaking at z ~ 2, very similar to the star formation history (Wall et al. 2005). They are still of significant density at z ~ 3.