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排序方式: 共有49条查询结果,搜索用时 31 毫秒
1.
Pressure effects on the low temperature state of the α-(BEDT-TTF)2MHg(SCN)4 organic conductor family
X. Chen J. S. Brooks S. Valfells G. J. Athas S. J. Klepper M. Tokumoto N. Kinoshita H. Anzai Y. Tanaka 《Synthetic Metals》1995,70(1-3)
Systematic magnetotransport measurements as a function of hydrostatic pressure have been made on four members of the α-(BEDT-TTF)2MHg(SCN)4 organic conductor family (M = K, Tl, Rb, NH4). Applied pressure above about 6 Kbar removes the density wave state for M = K, Tl, and Rb. For M = NH4 the superconducting state is removed with pressure as dTc/dP = − 0.25 K/Kbar. In all cases the Shubnikov de Haas oscillation frequency increases with pressure, including the β orbit (which involves the entire Brillouin zone), and new orbits involving very small fractions of the Fermi surface are formed. 相似文献
2.
LIa Iukel'son OV Krasil'nikov EE Gussakovski? BA Tashmukhamedov 《Canadian Metallurgical Quarterly》1977,22(5):806-810
It has been stated that boiled for three hours haemocytocardiotoxin (HT) from cobra poison loses "direct" hemolytic activity and is unable to potentiate a haemolytic effect of phospholipase A. Surface activity of HT does not change. It is shown that in the course of heat denaturation the aggregation of toxin molecules to dimers and trimers takes place and electrophoretic mobility is decreased. The fluorescence of HT tyroxin residues supported the fact of its irreversible heat denaturation. 相似文献
3.
The glucose transporter protein syndrome (GTPS) is caused by defective transport of glucose across the blood-brain barrier via the glucose transporter GLUT1, resulting in hypoglycorrhachia, infantile seizures, and developmental delay. Recent reports indicated that GLUT1 is a multifunctional transporter. We investigated the transport of vitamin C in its oxidized form (dehydroascorbic acid) via GLUT1 into erythrocytes of 2 patients with GTPS. In both patients, uptake of oxidized vitamin C was 61% of the mothers' values. Our findings are consistent with recent observations that vitamin C is transported in its oxidized form via GLUT1. We speculate that impaired transport of this substrate and perhaps other substrates in GTPS might contribute to the pathophysiology of this condition. 相似文献
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JS Brooks X Chen SJ Klepper S Valfells GJ Athas Y Tanaka T Kinoshita N Kinoshita M Tokumoto H Anzai CC Agosta 《Canadian Metallurgical Quarterly》1995,52(20):14457-14478
7.
LIa Klepper 《Canadian Metallurgical Quarterly》1997,43(5):538-541
A 22-year-old woman was found in bed unresponsive and hypotensive after an apparent overdose. Subsequent workup in the emergency department identified a ruptured ectopic pregnancy and extensive hemoperitoneum. A significant delay occurred when emergency physicians excluded the possibility of pregnancy because of the patient's normal menstrual history. A qualitative serum or urine pregnancy test is recommended in all women of child-bearing age who present with poisoning or drug overdose. 相似文献
8.
LIa Rozhinskaia 《Canadian Metallurgical Quarterly》1998,8(5):25-33
Tentative diagnoses of lymphadenitis or Hodgkin's disease were not confirmed in a 12-year-old child by cytological investigations. Along with lymphoid cells, individual leukocytes, histiocytes, macrophages, and glandular cancer cells, the cytological preparation of the cervical lymph node biopsy specimen contained uncommon multinuclear cells looking like interfollicular thyroid islets. This indicated cancer metastasis and the site of primary involvement: the thyroid. The diagnosis was confirmed by the histological and radionuclide methods. 相似文献
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Destructive changes in cardiomyocyte mitochondria of patients with diagnosis of alcoholic heart lesion were observed by the ultrastructural analysis of the endocardial biopsies serial sections. The appearance of mitochondria with the third additional compartment and mitochondria having two zones of different electron density not separated into the special compartments are described for the first time. The development of megamitochondria having different morphology is demonstrated. Mitochondrial origin of lipophuscin granules is suggested on the basis of the ultrastructural changes. Unusual structure of atypical mitochondria may provide new properties of these organelles this being considered by the authors as an adaptive cell and mitochondria response to the new metabolic conditions. 相似文献