Composition and dynamics of plasma in Saturn's magnetosphere.

During Cassini's initial orbit, we observed a dynamic magnetosphere composed primarily of a complex mixture of water-derived atomic and molecular ions. We have identified four distinct regions characterized by differences in both bulk plasma properties and ion composition. Protons are the dominant species outside about 9 RS (where RS is the radial distance from the center of Saturn), whereas inside, the plasma consists primarily of a corotating comet-like mix of water-derived ions with approximately 3% N+.

X-ray diffraction spectrometric analysis of nickel refinery aerosols, process materials and particulates isolated from worker lung tissues.

Results are reported of X-ray diffraction analysis of extracts derived from lungs of two nickel refinery workers and of three stationary air samples collected inside a nickel refinery. Since environmental samples from the 1950s and 1960s do not exist, two archived production control samples from that period were also analyzed. Because nickel has been found in respiratory tissue of workers retired for more than twenty years, it was likely that the residual nickel compounds must be rather insoluble.

Establishing normal values for nickel in human lung disease.

People working in the nickel refining industry are known to have a higher concentration of nickel in lung tissue than the general population. To be able to evaluate a potential nickel exposure from other sources, e.g.

Distribution of nickel in lungs from former nickel workers.

Objective: The purpose of this work was to study the distribution of nickel within lung tissue obtained from nickel-exposed people and to evaluate the use of only one single sample for determination of the nickel burden of the lung.

Methods And Materials: The material used was lung tissue obtained from 15 former nickel refinery workers who had been exposed to a variety of nickel compounds such as Ni3S2, NiO, Ni0, NiSO4, and NiCl2. Ten samples taken from different locations of the lung as well as from the right and left bronchus and from the right lower lobe (total 13 samples per individual) were analyzed for nickel by electrothermal atomic absorption spectrometry.

Sudden, unexpected death in subjects with undiagnosed gliomas.

We report two cases in which a medicolegal autopsy disclosed small and previously undiagnosed gliomas. The first case was a 38-year-old woman who was found dead in bed; her autopsy revealed a 1.3-cm low-grade astrocytoma in the right subthalamic area.

Determination of nickel in lung specimens of thirty-nine autopsied nickel workers.

Lung specimens from 39 nickel refinery workers autopsied during the period from 1978 to 1984 were analyzed for nickel. Fifteen of the workers were employed in the Roasting and Smelting Department, where exposure to nickel was predominantly in the form of nickel-copper oxides, Ni3S2 and metallic dust. The remaining 24 men worked in the Electrolysis Department.

Investigations on the quantitative determination of nickel and chromium in human lung tissue. Industrial medical, toxicological, and occupational medical expertise aspects.

Nickel (Ni) and some of its relatively insoluble compounds as well as chromates may be able to induce cancer in the region of the lungs, as well as in the nose and paranasal sinuses after occupational exposure. Latency periods may amount to 20 years and more. The results of recent investigations have shown that these metals cumulate in the lung tissue after inhalation of relatively insoluble chromium and nickel compounds.

Parietal pleural plaques: a comparison between autopsy and X-ray findings.

In a series of 402 consecutive autopsies, parietal pleural plaques (PP) were found in 68 individuals above 40 years of age. The frequency of PP was 26.9% in males and 3.

Proliferative Brenner tumor or ovarian metastases? A case report.

A case of low-grade superficial transitional papillomas of the urinary bladder and concomitant bilateral ovarian tumors with close similarities to the rare proliferative Brenner tumor is reported. Due to lack of benign Brenner elements, metastases from the bladder tumors were suggested. Death was apparently related to the effect of chemotherapy, and metastases were never confirmed.