629 research outputs found

    Desafios contemporâneos para a tutela dos direitos à privacidade e aos dados pessoais

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    Inicialmente concebido como o direito de ser deixado a sós, o direito à privacidade teve seu âmbito de proteção consideravelmente expandido ao longo das últimas décadas, na medida em que passou a ter profundas relações com o desenvolvimento tecnológico e, por conseguinte, com a proteção de dados pessoais. No contexto de crescente digitalização da vida cotidiana, os dados pessoais se tornaram um dos insumos de maior importância econômica do século XXI, o que faz com que o cidadão esteja em posição de vulnerabilidade dentro da relação informacional. Desta maneira, a devida tutela da privacidade e dos dados pessoais não mais se limita ao reconhecimento de um dever de abstenção por parte de terceiros, mas requer igualmente prestações positivas por parte do Estado. Isso pode ser observado mesmo anteriormente à promulgação da Lei Geral de Proteção de Dados (Lei nº 13.709/2018), com a discussão sobre temas como o habeas data e o direito ao esquecimento. A proliferação da internet, dos smartphones e das novas tecnologias disruptivas apenas exacerbou os desafios para a proteção dos dados pessoais, com a aceleração das técnicas de vigilância e de monitoramento dos indivíduos. Portanto, uma adequada reflexão sobre como diminuir a assimetria entre os polos da relação informacional necessariamente requer compreender que os direitos à privacidade e à proteção de dados não se encontram em um vácuo, mas possuem profundas ligações com outros direitos fundamentais, tais como a liberdade e a dignidade humana

    Test and Development of Prototype 1000W X-band Microwave Solid-State Power Amplifier for Small SAR Satellite

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    Our team has been developing an X-band SAR (Synthetic Aperture Radar) system on 75cm*75cm*75cm (paddles folding), 130kg class small satellite including folding flat antenna paddles under ImPACT program [1,2]. SAR observation has advantages under cloudy or bad weather conditions and directly obtaining three-dimensional data, however, requires a high power microwave transmitter. Therefore, we are developing a 1000W solid-state power amplifier (SSPA) that can be mounted on a small satellite by utilizing latest technologies such as GaN HEMT, power combiner, low impedance capacitor and the like. We tested and measured the performances of our manufactured amplifier EM (engineering model). The weight of our amplifier EM was approximately 12.8 kg (including structural panel 4.4kg). It was confirmed that its output capability exceeded 1000 W and continuous operation for more than 5 minutes, which is equivalent to 2000 km observation, was possible

    On the Embrittlement and Toughness of High Purity Fe-30Cr-2Mo Alloy

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    Experiments were conducted to explain unexpected embrittlement phenomena encountered in fabricating a high purity Fe-30Cr-2Mo alloy. By means of a hydrostatic tensile test with a Bridgman-Type specimen it was found that the fracture behaviour of the alloy is highly dependent on stress state. Under conditions of low triaxial stress, the alloy displays excellent ductility. Under conditions of high triaxial stress, however, the alloy shows less strain to fracture and a transition from ductile to cleavage fracture. The toughness of the Fe-30Cr-2Mo alloy can be significantly improved by thermomechanical processing

    Preoperative oral administration of pentoxifylline ameliorates respiratory index after cardiopulmonary bypass through decreased production of IL-6

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    Activation of inflammatory response during cardiopulmonary bypass (CPB) may lead to considerable post-operative mortality. Recently, pentoxifylline (PTX), a methylxanthine derivative, has been reported to be effective in inhibiting proinflammatory cytokine production. This study aimed to determine whether or not PTX prevented CPB-induced systemic inflammatory response syndrome (SIRS) in patients undergoing cardiovascular surgery. Thirty adult patients were randomly separated into 2 experimental groups and 1 control group of 10 patients each. The experimental group received peroral PTX administration (Group 1: 600 mg/day, Group 2: 900 mg/day), while the control group did not. In Group 1 and Group 2, PTX administration was started on preoperative day 5 and continued for 5 days. Serum levels of PTX and IL-6 were measured just before and at 4 h after CPB using HPLC and ELISA, respectively. Respiratory index (RI) before and at 4 h after CPB was calculated, and serum levels of C-reactive protein (CRP) and fibrinogen on postoperative day 1 were also determined. There were no significant differences in age, body weight, sex, surgical procedures, CPB time, haemodynamics or risk factors among the 3 groups. Serum IL-6 level and RI index after CPB in Group 2 were significantly decreased compared with those in Group 1 and the control group. These results, therefore, suggested that preoperative daily administration of 900 mg/day PTX contributed to the attenuation of CPB-induced SIRS and had a beneficial effect on the postoperative course after cardiovascular surgery.</p

    Usefulness of the waterless method for surgical hand washing:A comparison with the conventional scrub method

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    To evaluate the usefulness of the waterless hand washing method for surgical anti-sepsis, we conducted a microbial sampling study, comparing it to a conventional surgical scrub method. A total of 18 operating-room nurses were undertaking the following three-hand washing protocols : scrubbing with blushes using 4w/v% chlorhexidine gluconate (CHG) and also rubbing with CHG, followed by application of a 0.2w/v% CHG with ethanol (HS) preparation. (conventional method); rubbing with CHG and application of HS (two-stage surgical scrub method; TSS); rubbing with anti-septic soap and application of HS (waterless method; WL). Microbial sampling was conducted after hand washing using the glove juice method. No statistically significant differences in bacterial numbers were found among these three methods. The number of bacterially positive subjects was significantly higher in the conventional method than the TSS method. These results indicate that there are adverse effects of blush-scrubbing, as the detected bacteria were related to normal skin flora. As such, the WL method for hand anti-sepsis appears to be equivalent to the conventional surgical scrubbing method in terms of microbial detection. The WL method should therefore be introduced as a standard hand anti-sepsis method at the time of surgery because it is cost-effective as well as time-efficient
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