PubMed Health⌕ Search

Biomedical subjects

J Freiberg

Publications and source records attributed to J Freiberg.

8 recordsLinked to original sources
PubMed1992

Teacher interactions in mainstream social studies and science classes.

This investigation was designed to change teacher-student interactions in middle school social studies and science classes. Eighteen of 35 teacher volunteers received a six-session inservice emphasizing teacher effectiveness variables. Results indicated significant differences between experimental and control teachers on a pre-post contrast, as well as on a follow-up (maintenance) contrast. Differential effects on the science and social studies teachers were seen. Similarities and differences related to student type, independent of the intervention, were obtained.

Child↗
PubMed1975

[The value of suprapubic bladder aspiration in the diagnosis of bacteriuria (author's transl)].

Urine obtained simultaneously by midstream voiding and supra-public bladder aspiration from 500 patients were compared by bacteriological and, in some, microscopic examination. In a second series a similar examination was undertaken on 1000 samples each, obtained by midstream voiding, catheterisation or suprapublic bladder aspiration from different patients. There was no significant difference in sediments or Stansfeld count between midstream and aspirated samples. Qualitative false-positive results for protein were obtained in 20% of midstream samples from women. The Kass count for significant bacteriuria was false-positive in 3.4% of midstream compared with bladder-aspiration samples, in 7.6% for "questionable bacteriuria". Positive counts of under 10(5)/ml were obtained in 41.3%, of under 10(4)/ml in 26.7% of aspirated samples. Counts under 10(4)/ml in midstream-voided samples are usually considered the result of contamination, at times falsely so. "Mixed infections" were 7.8 times more common in catheter and 11.4 to 11.8 times more common in midstream than in aspirated samples. The presence of microorganisms in suprapublic bladder aspiration is always abnormal. Chemotherapy is indicated only on results from bladder aspiration.

Bacteriuria↗
PubMed1975

[Monocyte function in chronic uremia (author's transl)].

Monocyte function studies in vitro have been performed in 21 patients with terminal, dialysis-treated uremia and, in parallel, in 21 healthy normal subjects. In uremia the attachment, spreading activity, and reduction of nitroblue tetrazolium were shown to be significantly enhanced, indicating a metabolic activation of the monocytes. The phagocytosis of IgG-coated red cells, however, was significantly impaired. A modification of the monocyte IgG-receptor in uremic conditions is supposed; its relevance for the immunosuppression in uremic states is discussed.

Adult↗