ZIB

Hits per page

hits 1 - 2 | 2 hits

Sorting

Electronic Resource

Sintering of Chemically Synthesized Lead(II) Selenide Fine Powders (1998)

Unuma, Hidero ; Shigetsuka, Naoki ; Masui, Kanji ; [et al.]

Westerville, Ohio : American Ceramics Society

Journal of the American Ceramic Society 81 (1998), S. 0

add to mindlist on the mindlist

Details

ISSN: 1551-2916

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics

Notes: PbSe fine powders were synthesized from a liquid-phase reaction of lead-ascorbic acid complex and sodium selenosulfate. The resultant powders were sintered up to nearly theoretical density by controlling the sintering atmosphere and by optimizing the sintering temperature and time. The highest sintered density, 99.7% relative to the theoretical density of 8.27 103 kg/m3, was attained when a powder compact was sintered at 998 K for 6 h under a flow of argon containing 3% H2 gas. Powder compacts could be sintered to higher than 98% when the sintering temperature was 1073 K or lower. When the sintering temperature or time exceeded the optimum range, considerable volatilization of the component occurred, resulting in a decrease in the sintered density. The use of a powder bed was found to be effective in suppressing the volatilization of the component.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1151-2916.1998.tb02357.x

Permalink

Library	Location	Call Number	Volume/Issue/Year	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Electronic Resource

Abnormal physiological conditions in acute schizophrenic patients on emergency admission: dehydration, hypokalemia, leukocytosis and elevated serum muscle enzymes (1998)

Hatta, K. ; Takahashi, Takeo ; Nakamura, Hiroyuki ; [et al.]

Springer

European archives of psychiatry and clinical neuroscience 248 (1998), S. 180-188

add to mindlist on the mindlist

Details

ISSN: 1433-8491

Keywords: Key words Schizophrenia ; Emergency ; Dehydration ; Potassium ; Creatine phosphokinase

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Abstract This study investigated varieties and incidence of abnormal physiological conditions in acute schizophrenic patients on emergency. Laboratory data obtained prior to treatment from patients, admitted on an emergency basis during an 18-month period, were evaluated retrospectively, as well as demographics and clinical characteristics. Of 259 male acute schizophrenic patients (ICD-10: F2), 6.9% revealed dehydration, a third had hypokalemia and leukocytosis, and two thirds showed elevated serum muscle enzymes. These percentages were statistically significant compared with those of outpatients. In addition, the former three of these conditions in the F2 group were as frequent as those in alcohol and/or psychoactive substance abusers (ICD-10: F1) on emergency admission, although elevated serum muscle enzymes in the F2 group was less frequent than that in the F1 group. In order to prevent these abnormal physiological conditions from worsening and becoming life-threatening, one fourth of the F2 group [dehydration, 6.9%, severe hypokalemia (〈 3.0 mEq/l), 2.3%, and markedly elevated serum muscle enzymes (creatine phosphokinase 〉 1000 IU/l), 16.5%] required medical management such as fluid therapy and various types of monitoring. In cases of a behavioral emergency, laboratory screening and monitoring of urinary output were essential. Due to their lack of cooperation, case history, physical examination, and initial vital signs did not contribute to detection of their medical condition.