A highly active Ca/Cu/YCeO-TiO catalyst for the transient reduction of NO with CO and naphthalene under oxidizing conditions.

The transient combustion of biomass leads to the evolution of a variety of pollutants (NO, CO, organic compounds, and many others) that can react with each other on a suitable catalyst to generate compounds of lower toxicity. Here, the transient reduction of NO with CO and naphthalene in the presence of oxygen was studied on a Ca/Cu/YCeO-TiO catalyst. Response surface methodology was used to identify the optimum amounts of calcium, copper, and cerium.

Q fever and spontaneous abortion.

Q fever, caused by Coxiella burnetii, may result in abortions in infected animals and pregnant women. However, the role that Q fever plays in spontaneous abortions is still unknown. This study examined the association between Q fever serology and abortion in a region where Q fever is endemic.

Late onset dementia with argyrophilic grains and subcortical tangles or atypical progressive supranuclear palsy?

Most clinically demented elderly patients are found at autopsy to have Alzheimer's disease, multi-infarct dementia, Parkinson's disease, Pick's disease, or Creutzfeldt-Jakob disease. We studied 5 patients clinically characterized by late onset dementia whose brains showed no pathological evidence of Alzheimer's disease, or any other specific neuropathological diagnosis. We found argyrophilic grains, coiled bodies, abundant Alz-50-positive and thioflavine S-negative neurofibrillary tangles, and neuropil threads in the hippocampus, entorhinal cortex, locus ceruleus, substantia nigra, subthalamic nucleus, and inferior olives.

Alz-50, ubiquitin and tau immunoreactivity of neurofibrillary tangles, Pick bodies and Lewy bodies.

Immunocytochemical and quantitative immunochemical techniques were used to study the expression of Alz-50 antigen, ubiquitin and Tau in neurologic disorders characterized by the formation of filamentous neuronal inclusions. Alz-50, anti-ubiquitin and Tau-1 immunostained the intraneuronal neurofibrillary tangles and the neuritic component of plaques, both in Alzheimer's disease and in the brains of patients without dementia, but extraneuronal tangles were largely unstained. These antibodies also reacted with Pick bodies, and with the neurofibrillary tangles of Kufs' disease and Guam Parkinsonism-dementia.

Role of ovarian and adrenal progesterone in the regulation of ovum transport in pregnant rats.

This study was designed to assess the role of postovulatory ovarian and adrenal progesterone secretion in the regulation of ovum transport in pregnant rats. The number and distribution of embryos in the genital tract and the plasma progesterone levels were determined during the first 5 days of pregnancy in ovariectomized (OVX), adrenalectomized (ADX), ovariectomized and adrenalectomized (OVX + ADX), intact control (IC), or sham-operated control (SOC) rats. Some OVX or OVX + ADX rats received subdermal implants of progesterone pellets following surgery.