Reproducibility and comparability of bronchial challenge tests depends critically on accurate assessment of nebulizer output. Evaporation during nebulization means that simple weighing is inaccurate, overestimating the delivered dose of active ingredient. We wanted to quantify this effect in the context of intermittent nebulization, using a dosimeter as used in bronchial provocation tests. Outp...

1. The incorporation of [(35)S]sulphate in vivo into the acid-soluble intermediates extracted from young rat skin showed three sulphated hexosamine-containing components. 2. The rates of synthesis of these components were determined in vivo by measuring the incorporation of radioactivity from [U-(14)C]glucose into their isolated hexosamine moieties. 3. The incorporation of radioactivity from [U...

CONTEXT AND OBJECTIVE Studies using radionuclides are the most appropriate method for estimating renal function. Dimercaptosuccinic acid chelate labeled with technetium-99m (99mTc-DMSA) is the radiopharmaceutical of choice for high-resolution imaging of the renal cortex and estimation of the functional renal mass. The aim of this study was to evaluate a simplified method for determining the abs...

Monotonicity of the equilibrium bidding strategy is a key property of structural auction models. Traditional nonparametric estimators provide a flexible means of uncovering salient features of auction data, but do not formally impose the monotonicity assumption that is inherent in the models they are trying to estimate. Here we develop a nonparametric estimator which imposes the monotonicity as...

A method of measuring trunk motion and two related motions using a tape measure and a stepstool was developed by physical therapists at our hospital. The purpose of this study was to assess the reliability of this method. Three repetitions of six motions performed by 24 subjects were each measured by three physical therapist raters on two separate days. The motions were forward bending, backwar...

the existence of ra 226 is proved and measured by radiom emanation-method in waters and food products of north , north west and north – east of iran. a total of 126 water, 249 food and 22 air samples have been examined. the concertration of ra 226 in waters found to be 0.01 to 1.104 pci/1 and in food products from 0.01 to pci/gr. ash.the amount found in due ranges from 0.003 to 0.227 pci/m 3.it...

The purpose of this paper is to present a clinically feasible method to provide objective, quantitative information regarding the quality of a patient's gait. The technique used is simple and economical and requires minimal equipment. The four basic temporal and distance factors are 1) stride length, 2) step length, 3) cadence, and 4) velocity. The technique requires the following equipment: 1)...

background: natural radioactivity in materials under certain conditions can reach the hazardous radiological levels. so, it becomes necessary to study the natural radioactivity in different materials to assess the dose for the population in order to know the health risks and to have a baseline for future changes in the environmental radioactivity due to human activities. materials and methods: ...

We investigated the accuracy of a double-injection method for sequentially measuring cerebral blood flow (CBF) with N-isopropyl-(123I)p-iodoamphetamine (IMP) in simulation studies based on patient data and in clinical studies. The unidirectional clearance of IMP from the blood to the brain (K1; nearly equal to CBF) in the first and second sessions was calculated by means of a microsphere model....

At times a clinician must describe the size of a lesion when measurement presents difficulties. A 'guestimate' may then be recorded. We tested the accuracy of forensic clinicians (10 physicians and 1 nurse) in guestimating the sizes of ten test objects, comparing their performance with 13 individuals from other professions. The participants were permitted to handle the objects but not to use a ...