Room Temperature Organic Superconductor?

The electron--phonon coupling in fullerene C28 has been calculated from first principles. The value of the associated coupling constant lambda/N(0) is found to be a factor three larger than that associated with C60. Assuming similar values of the density of levels at the Fermi surface N(0) and of the Coulomb pseudopotential for C28-based solids as those associated with alkali-doped fullerides A3C60, one obtains Tc(C28) \approx 8 Tc(C60).Comment: 10 pages, 2 figure

Design Tool Room Temperature Measurement with Temperature Sensor Using Lm35 At89s51 Microcontroller

In writing that I make with the title "Room Temperature Measuring EquipmentDesign With LM35 Temperature Sensor Using AT89S51 MICROCONTROLLER "about design for temperature data acquisition system that uses the basic componentsof an ADC, temperature sensor, microcontroller AT89S51 and Seven Segment as aviewer facility. Temperature data acquisition system into something that is veryimportant in industrial activity, because it is a small part of a process control. Withregard to the importance of the system, hence the temperature data acquisition systemdesign that is capable of temperature monitoring activity of a plant. The data to bemeasured is a physical property so as to be processed temparature and displayed inthe form of electrical systems used LM35 temperature sensor that is able to convertthese quantities with increasing 10mV/oC.To be able to design the system was first carried out the process of cha nging thetemperature into an analog voltage using a LM35 temperature sensor. after goingthrough the process was strengthened by the signal conditioning, analog voltageconverted into digital data using the ADC 0804. Digital data obtained is thenprocessed by the Microcontroller AT89S51 and displayed, so we get someinformation about OC units of the plant temperature on a Seven Segment of thetemperature data acquisition system design is obtained that this system has the abilityto measure the temperature from 25oC to 100oC with average errors Averagetemperatures for the appointment of 0.266 oC

Cold Working Room Temperature Increased Moderate/severe Qualitative Work Stressor Risk in Air Traffic Controllers

Back ground: Air traffic controllers (ATCs) have a high level of responsibility which may lead to qualitative work load stressor (QLWS). This study identified several risk factors related to moderate qualitative work load stressor among the ATCs.Methods: This cross-sectional study was conducted in November 2008 at Soekarno-Hatta International Airport. Subjects consisted of active ATCs with a minimum of six months total working tenure. The study used standard diagnostic as well as home stressor questionnaire surveys. All questionnaires were filled in by the participants.Results: Subjects were aged 27–55 years, consisted of 112 ATCs who had moderate and 13 (9.6%) ATCs who had slight QLWS. Those who felt than did not feel the working room temperature was not too cold had 11-fold moderate/severe QLWS [adjusted odds ratio (ORa) = 10.63: 95% confidence interval (CI) = 1.79-65.59]. Those who had than did not have moderate/severe role ambiguity stressor had 8.2-fold risk of moderate/severe QLWS (ORa = 8.23: 95% CI = 1.13-59.90). Those who had than did not have moderate/severe personal responsibility stressor had 6,6-fold risk for moderate/severe QLWS (ORa = 6.64: 95% CI = 1.13-38.85). In terms of the career development stressor, those who had it than did not have it had a 3.7-fold risk for moderate/severe QLWS (ORa = 3,67: 95% CI = 0.88-15.35; P = 0.075).Conclusion: Those who felt the room temperature was too cold, moderate/severe role ambiguity, personal responsibility, as well as career development stressor were at increased risk for moderate/severe QLWS. (Health Science Indones 2011;2:58-65)

Design by Room Temperature Gauge Lm35 Temperature Sensor Using At89s51 Microcontroller

In writing that I make with the title "Temperature Measuring Equipment Design Room With LM35 Temperature Sensor Using a Microcontroller AT89S51" about design for temperature data acquisition system that uses the basic components of an ADC, temperature sensor, Microcontroller AT89S51 and Seven Segment as a viewer facility. Temperature data acquisition system into the one thing that is very important in industrial activity, because it is a small part of a process control. Regarding the importance of system, so the temperature data acquisition system design that is capable of monitoring the temperature of a plant. The data will be a physical property measured temperature so as to be processed and displayed in the form of electrical systems used LM35 temperature sensor that is able to convert these quantities with the increase of 10mV / º C. To be able to design the system was first carried out the process of changing the temperature into an analog voltage using a temperature sensor LM35. After going through the process was strengthened by the signal conditioning, analog voltage converted into digital data using the ADC 0804. Digital data obtained is then processed by the Microcontroller AT89S51 and displayed, so we get some information about the temperature of the plant unit º C on a Seven Segment From system design, acquisition of temperature data showed that this system has the ability to measure the temperature of 25 º C to 100 º C by the error mean Average temperatures for the appointment of 0.266 ° C

Neutron Diffraction Studies on Chemical and Magnetic Structure of Multiferroic PbFe0.67W0.33O3

We report on the single phase synthesis and room temperature structural characterization of PbFe0.67W0.33O3 (PFW) multiferroic. The PFW was synthesized by low temperature sintering, Columbite method. Analysis of powder XRD pattern exhibits single phase formation of PFW with no traces of pyrochlore phase. Detailed analysis of room temperature neutron diffraction (ND) reveals cubic phase at room temperature, space group Pm-3m. The ND pattern clearly reveals magnetic Bragg peak at 2theeta = 18.51 (Q = 1.36{\AA}-1). The refinement of magnetic structure reveals G-type antiferromagnetic structure in PFW at room temperature. The dielectric constant and loss tangent decreases with increasing frequency. The room temperature P-E measurements shows a non-linear slim hysteresis, typical nature of relaxor multiferroics, with saturation and remnant polarizations of Ps = 1.50 microC/cm2 and Pr = 0.40 microC/cm2, respectively.Comment: 3 pages, 5 figures, conferenc

Room temperature Bloch surface wave polaritons

Polaritons are hybrid light-matter quasi-particles that have gathered a significant attention for their capability to show room temperature and out-of-equilibrium Bose-Einstein condensation. More recently, a novel class of ultrafast optical devices have been realized by using flows of polariton fluids, such as switches, interferometers and logical gates. However, polariton lifetimes and propagation distance are strongly limited by photon losses and accessible in-plane momenta in usual microcavity samples. In this work, we show experimental evidence of the formation of room temperature propagating polariton states arising from the strong coupling between organic excitons and a Bloch surface wave. This result, which was only recently predicted, paves the way for the realization of polariton devices that could allow lossless propagation up to macroscopic distances