A study was designed to evaluate the normal value of 24 hr urinary calcium levels in the city of Yazd. The average urinary excretion of calcium in a sample of 329 persons randomly selected was 232 mg/day, while patients with a history of recurrent urolithiasis excreted 20X mg/day. There is evidence which shows that more important factors than the amount of urinary calcium exist which influe...

Abstract: The last few years have witnessed remarkable progress in the study of the synthetic theory of metric measure structures with Ricci lower bounds. This led to new structure, stability and rigidity results, previously known only in the smooth setting or for the so-called Ricci limit spaces. In the lectures I will illustrate the key technical ideas at the basis of these developments, focu...

The play hour is not so much an analytic study of the individual child as a study of his reactions in a socialized group. He is no longer a single unit but part of a small community; and although he is expressing himself in a world of play, he is living life to the fullest then, and his whole experiential background will have the tinge of playboy carried on through life and colored by his first...

The use of all-terrain vehicles (ATVs) has increased in the United States and elsewhere over the last three decades, along with an increased frequency of incidents resulting in serious injuries, among which have been head injuries. ATVs are designed for motorized off-highway work and recreation, can weigh up to 600 lbs (272 kg), and may reach speeds as high as 75 mph (120 km/h). ATV crashes, in...

Philippe Ariès (1914–84) first won fame for his provocative rethinking of the history of childhood and the family [1], though his contributions have subsequently been severely criticized [2]. What then of his studies of the history of death? These too opened up an exciting new field of inquiry [3]. Have they stood the test of time, or suffered a similar fate? Indeed, has the whole history of de...

1Rea!> at tbe /Oeetfng of tbe 3Batb anb ^Bristol branch of tbe aSritisb iTOeMcal association, /?aie 30tb, 1888. Some persons may be disposed to think that those who attempt to determine by statistics at what hour delivery most frequently occurs, are taking a great deal of trouble about a question which is more curious than useful. But there are others who consider that no investigation can be u...

Objective: Measurement of glomerular filtration rate (GFR) is the best determinant in assessment of kidney function for diagnostic and therapeutic purposes. As extremely accurate methods of GFR measurement (i.e. Inulin clearance) are expensive and Time-consuming and due to limitations of the 24 hour urine collection method, some formula have been developed for the GFR measurement. Here we have ...

OBJECTIVES The present study sought to evaluate the effect of a change from a rotating 3-shift (8-hour) to a 2-shift shift (12 hour) schedule on sleep, sleepiness, performance, perceived health, and well-being. METHODS Thirty-two shift workers at a chemical plant (control room operators) responded to a questionnaire a few months before a change was made in their shift schedule and 10 months a...

A once-daily sustained-release preparation of theophylline (Theo-24) was compared to a twice-daily (bid) preparation (Theo-Dur). Fourteen subjects with asthma requiring daily therapy with theophylline were evaluated in a 30-day prospective study. Pulmonary function and serum levels of theophylline were measured. With the twice-daily preparation the mean variation over 12 hours between the maxim...

BACKGROUND physical activity (PA) is an important factor to promote healthy ageing. However, older adults are not physically active enough. Socio-ecological models suggest that weather conditions are determinants of PA and may bias relations between other environmental factors and PA. This may especially be the case for the most vulnerable and inactive older persons. Understanding the role of w...