Microcomputer virus programs have become a serious problem for users of DOS-based microcomputers. Although the number of viruses in circulation is growing steadily, fewer organizations are being disrupted by infections. Prompt detection of (and effective response to) virus infections is limiting the damage. The prudent course of action for organizations that use DOS-based microcomputers is to i...

Iron (Fe) and copper (Cu) metabolism are closely intertwined, and a deficiency of Cu may lead to a secondary Fe deficiency. The impact of a severe Cu deficiency on proteins involved in Fe metabolism in the bovine has not been studied. Therefore, a 493 day study was conducted to determine the effect of a severe long-term Cu deficiency on Fe metabolism in beef cattle. Twenty-one Angus calves were...

Copper (Cu) is an essential trace metal that is toxic in excess. It is therefore important to be able to accurately assess Cu deficiency or overload. Cu chaperone for Cu/Zn superoxide dismutase (CCS) protein expression is elevated in tissues of Cu-deficient animals. Increased CCS content in erythrocytes is particularly sensitive to decreased Cu status. Given the lack of a non-invasive, sensitiv...

INTRODUCTION Tympanometry is currently the most frequently used tool for assessing the status of the middle ear, commonly assessed using a single 226Hz tone. However, the use of the Acoustic Immittance Measures with a wideband stimulus is a promising high-resolution evaluation, especially in individuals known to have middle ear alterations, such as Down syndrome patients. OBJECTIVE The aim of...

FVT of I , 1 -dichloroand/or 1 -chloroethenyl substituted PAHs gives access to the CP-PAH's pyracylene (l), cyclopenta[cd]pyrene (12) and benz[ghi]fluoranthene (13), cyclopent[hi]aceanthrylene (18) and cyclopent[hi]acephenanthrylene (19), and the novel cyclopenta[cd]fluoranthene (22) and isomeric cyclopent[fg](25a), cyclopent[ik](25b) and cyclopent[rnn]acepyrylene (25c), respectively. The prope...

Copper (Cu) deficiency is a widespread problem in cattle across the United States and breed differences in Cu metabolism may contribute to this issue. Intracellular Cu is tightly regulated by transport and chaperone proteins, and to date, these mechanisms have not been elucidated to address breed differences in Cu metabolism, nor have these proteins been characterized in bovine fetal liver. Mat...

Chlorinated solvents are the most prevalent organic contaminants found in ground water (Stroo et al. 2003), and in the dissolved phase they are typically mobile and recalcitrant, particularly trichloroethylene (TCE) and tetrachloroethylene (PCE). Schwille (1984, 1988) was the first to recognize that chlorinated solvent plumes (i.e., zones of dissolved phase contaminants) are caused by immobile ...

We wish to report a case of lymphangioleiomyomatosis in an 86-yr-old female who presented with acute breathlessness on a background of increasing dyspnoea over a 3-yr period. She had been told that she had chronic obstructive pulmonary disease 2 yrs prior to this presentation, despite having never smoked. At the time of admission she was taking regular nebulised salbutamol but no other respirat...

OBJECTIVE To investigate whether fatal accidents, including drownings, have decreased among Icelandic fishermen and seamen. DESIGN Historical prospective study. The study population was record linked with the National Register and the Register of Deceased to get information on water transport accidents (ICD-7, E850-E858) during the period 1966-86. The number of persons in each calendar year a...