A Novel Intra-body Sensor for Vaginal Temperature Monitoring

Over the years some medical studies have tried to better understand the internal behavior of human beings. Many researchers in this domain have been striving to find relationships between intra-vaginal temperature and certain female health conditions, such as ovulation and fertile period since woman’s intra-vaginal temperature is one of the body parameters most preferred in such studies. However, due to lack of a appropriate technology, medical research devoted to studying correlations of such body parameters with certain womans’ body phenomena could not obtain better results. This article presents the design and implementation of a novel intra-body sensor for acquisition and monitoring of intra-vaginal temperatures. This novel intra-body sensor provides data collection that is used for studying the relation between temperature variations and female health conditions, such as anticipation and monitoring of the ovulation period, detection of pregnancy contractions, preterm labor prevention, etc.. The motivation for this work focuses on the development of this new intra-body sensor that will represent a major step in medical technology. The novel sensor was tested and validated on hospitalized women as well as normal healthy women. Finally our medical team has attested to the accuracy, usability and performance of this novel intra-body sensor

Simulations of the 100kW TJNAF FEL using a short Rayleigh length

The TJNAF FEL can be upgraded to operate at 100kW average power and then explore the use of a short Rayleigh length in order to reduce the power density on the resonator mirrors. The short Rayleigh length can only work with a relatively short undulator. Multimode simulations are used to self-consistently model the optical mode interaction with the electron beam. The steady-state resonator mode is affected by the complex, non-linear electron beam evolution as well as the resonator design.The authors are grateful for the support of the Office of Naval Research, Thomas Jefferson National Accelerator Facility, and contributions of Dave Douglas of TJNAF

Insulated Molecular Wires: Sheathing Semiconducting Polymers with Organic Nanotubes through Heterogeneous Nucleation

International audienceInsulated molecular wires formed from organic molecules may have promising applications in organic and flexible electronic devices. Here, the authors provide compelling evidence of the formation of insulated molecular wires by sheathing conducting regioregular poly(3-butylthiophene-2,5-diyl) (P3BT) fibrils with insulating nanotubes from 3,5-bis-(5-hexylcarbamoylpentyloxy)-benzoic acid decyl ester molecules through a nucleation and growth process. For dilute systems, conducting atomic force microscopy together with force-distance curves and current-voltage spectroscopy are concomitantly performed to sense current from the topmost surface to the core of the composite fibrils at controlled tip indentation depths. Results show that current is sensed only when the core of the nanocomposite fibrils is reached which indicates the presence of an insulating layer around the semiconducting P3BT fibrils. The existence of this molecular nanocomposite is further supported by neutron scattering experiments carried out on more concentrated systems at different temperatures