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  • Electronic Resource  (20)
  • 1985-1989  (11)
  • 1965-1969  (8)
  • 1950-1954  (1)
  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 5438-5442 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The spectral distribution of photoconductivity and infrared excited electroluminescence has been determined in GaP light emitting diodes at low temperatures by conventional infrared spectroscopic techniques. The observed photoresponse was found to be caused by ionization of shallow donors only, showing a peak sensitivity of 20 mA/W at 13-μm wavelength. Spectral structures for photon energies lower than the binding energies of shallow donors are attributed to electric field assisted photoionization. An external quantum efficiency of 3×10−3 was obtained being largely independent on the bias voltage and the wavelength of infrared stimulation.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 464 (1986), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 119 (1988), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 66 (1988), S. 790-795 
    ISSN: 1432-1440
    Keywords: Breast cancer ; Lung metastases ; Clinical course
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The clinical course of 50 breast cancer patients whose first metastases were found in the lungs was investigated. 18 months after the start of primary treatment 50% of the patients had developed pulmonary metastases (range: 0–81 months). In 23% of patients a solitary, and in 68% more than one, lung metastases were detected. After a median time of 4 months, in 56% of patients the disease had spread to further organs with bone (25%) and liver (17%) being the most frequent sites. First line management of lung metastases employed surgery, endocrine treatment, chemotherapy or a combination of these modalities. In 24% of patients a complete response was achieved, and in 11% a partial response, with an overall response rate of 35%. Median survival from detection of lung metastases was 13 months (range 4–123+). Patients with only a solitary lung metastasis survived for a median of 11.5 months as compared to 10.5 months for patients with more than one pulmonary metastases. Patients with a disease-free interval of more than 18 months survived significantly longer than patients with a disease-free survival of 18 months or less.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 67 (1989), S. 813-817 
    ISSN: 1432-1440
    Keywords: Tumor marker ; MCA ; CA 15-3 ; Breast cancer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Mucin-like cancer-associated antigen (MCA), a new tumor marker using the mouse monoclonal antibody b-12 is thought to be of value in the management of patients with breast cancer. In this study sera from 191 female patients with breast cancer (112 with progressive disease [PD] and 79 with no evidence of disease [NED]) were analyzed for MCA levels and compared with those of cancer antigen 15-3 (CA 15-3) in single determination and in combination with carcinoembryonic antigen (CEA) and tissue polypeptide antigen (TPA). A cut-off level of 14 U/ml for MCA seems to be more appropriate than the recommended 11 U/ml to distinguish between PD and NED in patients with breast cancer. Although there was a fairly good correlation of MCA to CA 15-3, MCA was inferior in sensitivity and specificity to CA 15-3. Patients with osseous metastases and those with more than one metastatic site showed higher MCA levels than patients with visceral or soft tissue metastases, a fact which was comparable to CA 15-3. Combining MCA and CA 15-3 resulted in a gain in specificity but marked loss of sensitivity. The combination of MCA and CEA results also in a loss of sensitivity whereas the combination of CA 15-3 and CEA showed an increased specificity and only a negligible loss of sensitivity. The combination of MCA with TPA is of little value in the follow-up of breast cancer, as is the combination of CA 15-3 with TPA. The combination of CA 15-3 with CEA can be still recommended for follow-up for early detection of metastases in breast cancer. Further investigations with MCA to determine the lead time of this new marker as well as its role as a possible monitor of the response to therapy are recommended.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-0711
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 17 (1968), S. 294-299 
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Erythrocyte metabolism studies in a case with hereditary spherocytosis only showed minimal deviations of the activity of the enzymes of glycolysis from the normal values. The formation of lactate was increased, the intracellular sodium concentration was increased and the intracellular potassium concentration was decreased. The methemoglobin level of the erythrocytes was increased. After splenectomy, which resulted in a good clinical and hematological remission, lactate formation and the abnormal electrolyte and methemoglobin level of the erythrocytes returned to normal.
    Notes: Zusammenfassung Untersuchungen des Stoffwechsels der Erythrozyten bei einem Fall von hereditärer Sphärozytose ergaben nur geringe Abweichungen der Aktivität der Fermente der Glykolyse von der Norm. Die Bildung von Laktat war gesteigert, der Gehalt an intrazellulärem Natrium vermehrt und an Kalium vermindert; der Methämoglobingehalt der Erythrozyten war vermehrt. Nach der Splenektomie, die zu einer guten klinischen und hämatologischen Remission führte, normalisierte sich die Laktatbildung und der abnorme Elektrolytund Methämoglobingehalt der Erythrozyten.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 253 (1966), S. 29-30 
    ISSN: 1432-1912
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Glutathionreductase and triosephosphate-isomerase were found to be reduced in the erythrocytes and platelets of a twelve year old boy with pancytopenia of the type Estren-Damashek.
    Notes: Zusammenfassung Bei einem 12jährigen Knaben mit Pancytopenie vom Typ Estren-Damashek wurde bei Stoffwechseluntersuchungen der Erythrocyten und Thrombocyten ein Mangel an Glutathionreductase und Triosephosphatisomerase festgestellt.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 45 (1967), S. 73-77 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In the serum and plasma of adults patients suffering from osteopetrosis we found a 6–8-fold increased activity of acid phosphatase and aldolase. The increase of lactase dehydrogenase was minor. The phosphatases had three maxima of activity in the acid pH range using 0,2M acetate buffer. Starch gel electrophoresis showed separation of three fractions. The substrates phenylphosphate,β-glycerophosphate andα-glycerophosphate are hydrolysed in the order listed with decreasing velocity. l-tartrate inactivated the phosphatases to 40%, but cystein to about 70%. In all patients an increase of citric acid, pyruvic acid and lactic acid was observed.
    Notes: Zusammenfassung 1. In Serum und Plasma von Patienten, die an Marmorknochenkrankheit litten, wurden Erhöhungen der Aktivität der „sauren“ Phosphatasen bis auf das Sechsfache der Norm, beträchtliche Aktivitätserhöhung der Aldolase und geringfügige der Lactatdehydrogenase festgestellt. 2. Die saure Plasmaphosphatase besitzt drei Aktivitätsmaxima bei pH 5,1, 4,7 und 4,0. Saure Serumphosphatase wird durch Stärkegelelektrophorese in drei Fraktionen aufgespalten und greift Phenylphosphat,β-Glycerophosphat undα-Glycerophosphat in der Reihenfolge ihrer Nennung mit abnehmender Geschwindigkeit an. Diese Plasmaenzyme wurden durch l-Tartrat zu 40% und durch Cystein zu 70% gehemmt, was sie von Phosphatasen anderer Herkunft unterscheidet. 3. Bei den untersuchten Patienten waren die Konzentrationen von Citronensäure und Brenztraubensäure im Serum stark, die der Milchsäure leicht erhöht.
    Type of Medium: Electronic Resource
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