40 research outputs found

    How useful are genital exams during boys' sports physicals?

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    Examination may be useful to identify hernia but not testicular cancer. Insufficient evidence exists to recommend for or against screening genital exams for boys playing sports. Given the low risk of harm, screening for hernias as a part of a preparticipation physical evaluation (PPE) is recommended by several specialty organizations (strength of recommendation [SOR]: C, expert opinion)

    What is the best way to treat Morton's neuroma?

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    No single treatment for Morton's neuroma has been identified in the literature.A protocol of stepped care that showed good results in an uncontrolled trial seems reasonable: patient education and footwear or insole changes, followed by corticosteroid injections and, finally, surgery (strength of recommendation [SOR]: C, case series). Injecting sclerosing alcohol depends on the provider's access to and comfort with ultrasound, but the evidence is insufficient to recommend it routinely (SOR: C, case series)

    Breakthrough on radon individual monitoring and protecting miners by novel dual-function monitor on respirator

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    Abstract Breakthrough is made on inventing, producing and applying novel dual-function passive individual radon monitor in canister on respirators for radon inhalation monitoring and protecting individuals in particular miners. The rationale in this invention is having individual monitors for determining actual naturally inhaled radon by individuals and protection against particulates in one device. The monitor comprises two passive polycarbonate track detectors (PCTD); one near canister orifice (PCTD/bare), and one under activated carbon fabric (PCTD/ACF) to detect alphas of radon adsorbed on ACF carbon active sites. The PCTD/ACF detects radon with 12.7 times more sensitivity than PCTD/bare; called “Forced Amplification Factor (FAF)”. Monitors were successfully operated and calibrated in laboratory radon chamber using low suction rate pump resembling human natural inhalation. The performance of monitor showed high promises for radon individual monitoring and protection. This novel development also opens new horizons for fundamental and practical scientific research to further upgrade the monitor

    Anti-inflammatory effects of ethanol extracts of Hippomarathrum microcarpum (M. Bieb.) B. Fedtsch (horse fennel) in laboratory rats

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    Background and objectives: Apiaceae family is one of the largest plant families with wide distribution all around the world. The genus Hippomarathrum has 28 species around the world among them H. microcarpum is outspread in the north, northwest, west and central of Iran, and also Turkey, Caucasus and Iraq. In a previous study, two coumarins (osthole and isoimperatorin) and one sterol (β-sitosterol) have been isolated and identified from the plant ethyl acetate extract. A study showed that this combination has inhibitory effect on COX-2 and Lipooxygenase-5 and inhibits the production of Leukoterine CL1 and therefore may provide a basis for the production of new anti-inflammatory drugs. Methods: The extraction was carried out using 70% ethanol through maceration. To investigate the anti-inflammatory effects, the edema method was used in the paw of the male rats using carrageenan and the rate of inflammation was measured by digital caliper. At the end of the experiment, the leg of mice were cut off and sent to the histopathologic laboratory for pathological tests. Results: In all doses of the extract, at 1, 2, and 3 h after infusion, the inflammation significantly decreased (

    A Surprising Finding of Remote Ischial Avulsion

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    A 25-year-old male presented to the ski clinic after colliding with a tree while snowboarding. He had immediate sharp pain at his “tailbone,” but denied numbness and weakness. Past medical history was initially reported as unremarkable. On exam, he demonstrated midline tenderness over the sacrum. Pelvic radiography was performed

    Time-resolved evolution of plasma parameters in a plasma immersion ion implantation source

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    International audienceThe origin and nature of perturbations induced by a high-voltage pulse on plasma parameters and their relationship to operating conditions (power and pressure) in an argon inductively coupled radio-frequency plasma device is explored. The plasma parameters are measured with two radiofrequency compensated Langmuir probes positioned either vertically above the pulsing target or horizontally along the diameter of the chamber, in the same axial plane as the target and same distance from the RF antenna. Fluctuations are observed in electron density ne, temperature Te and plasma potential V pl following negative polarity high voltage pulses, and propagate deep in the plasma and well after the end of the pulse. Time-resolved data results indicate that the perturbations are significantly dampened at higher power, as well as when closer to the plasma RF coil. The perturbation amplitudes depart significantly from steady state values when the pulse amplitude exceeds 2.0 kV, and increase with increasing pulse amplitude. Perturbation amplitudes are also higher for target materials having larger secondary electron yield. Our experimental results suggest that the underlying mechanism of this perturbation could be plasma heating driven by damping of a beam-plasma instability as a result of a beam of secondary electrons emitted by the target streaming into the plasma
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