Bibliothek

feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
  • 1
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Room temperature continuous wave operation of ZnSe-based blue/green laser diodes grown homoepitaxially on conductive ZnSe substrates with threshold current densities as low as 176 A/cm2 has been demonstrated. This is the lowest reported threshold among all short wavelength lasers in the blue/green region. Lifetimes at room temperature of up to 2.1 h have been obtained for lasers with pre-existing defect densities lower than 3×104 cm−2. © 1998 American Institute of Physics.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Colloid & polymer science 262 (1984), S. 597-604 
    ISSN: 1435-1536
    Schlagwort(e): position sensitive proportional counter ; small and wide angle X-ray scattering ; polyethylene single crystal ; annealing ; thickening
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Abstract By the use of a position sensitive proportional counter, changes in small and wide angle X-ray scattering during annealing of polyethylene single crystal mats were measured from the start in successive spans of very short measuring time. At high temperatures, the long period relating to stacking of lamellae rapidly increased at an early stage, passed through a plateau, and thereafter again increased gradually. With a decrease in annealing temperature, the amount of its first rapid increase was reduced and the plateau changed into an ascending slope. At much lower annealing temperatures, the long period increased following the logt law after an induction time. The integral breadth of a peak corresponding to the long period first increased rapidly, simultaneously with the rapid increase in the long period, and thereafter decreased. Wide angle X-ray measurement showed that the integrated intensity of 110 reflection first decreased and then increased during annealing at high temperatures. This fall and rise process was more marked, when the annealing temperature is higher and the initial thickness of lamellae is smaller. From these observations, it was inferred that in the thickening process, stacking order of lamellae at first decreased because of rapid reorganization due to partial melting or melt-recrystallization and subsequently increased through increasing evenness of lamellar thickness.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 3
    ISSN: 1432-2323
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Résumé La perfusion continue hyperthermique (CHPP) avec une solution contenant 30 mg de mytomycine C (MMC) et 300 mg de cisplatine (CDDP) a été utilisée comme traitement prophylactique pour prévenir la récidive péritonéale chez 79 patients avec un cancer gastrique avancé réséqué. Un groupe composé de 81 patients avec un cancer gastrique avancé qui ont eu une chirurgie à visée curatrice pendant la même période de temps a servi de contrôle. La CHPP, perfusion de MMC et de CDDP mélangés au sérum physiologique réchauffé à 43.5°C par un appareil spécial, était administrée pendant 60 minutes. Lorsque l'envahissement séreux a été confirmé par l'examen anatomopathologique, la survie des patients ayant eu la CHHP était significativement plus longue que lorsque les patients n'avaient pas eu de CHHP. La survie des patients classés stade IV était également améliorée. Il n'y avait aucune amélioration, par contre, de la survie lorsque la couche séreuse n'était pas envahie. Des effets secondaires ont été observés chez quatre patients qui ont une CHHP: un a développé une aplasie médullaire sévère, alors que les trois autres n'ont eu qu'une hyperazotémie transitoire. Il n'y avait, en définitive, aucune différence de mortalité ou de morbidité entre les deux groupes. Ces résultats indiquent que la CHPP est sûre et facilement disponible comme thérapie prophylactique contre la récidive péritonéale après résection de cancer gastrique.
    Kurzfassung: Resumen La perfusión hipertérmica peritoneal continua (CHPP) con una solución que contiene 30 mg de mitomicina C y 300 mg de cisplatino ha sido introducida como tratamiento profiláctico para prevenir recurrencia peritoneal luego de la resección curativa en 79 pacientes con cáncer gástrico avanzado. El grupo control consistió en 81 pacientes con cáncer gástrico avanzado que fueron sometidos a cirugía curativa en el mismo período de tiempo. La CHPP fue realizada durante 60 minutos con solución salina con MMC y CDDP calentada a 43.5°C por medio de un sistema de CHPP. En los pacientes con invasión serosa confirmada histológicamente, la tasa de sobrevida del grupo CHPP fue significativamente mayor que la del grupo control. También se detectó una ventaja de sobrevida en los pacientes en estado IV tratados con CHPP. Sin embargo, no se encontró ventaja en cuanto a sobrevida entre el grupo CHPP y el grupo control en los pacientes con tumores negativos para invasión serosa. Efectos adversos fueron registrados en 4 pacientes con CHPP:1 desarrolló severa depresión de la médula ósea, e hiperazotemia transitoria fue observada en los otros 3 pacientes. Sin embargo, no se halló diferencia en cuanto a mortalidad y morbilidad entre los dos grupos. Estos resultados indican que la CHPP es una modalidad terapéutica segura y fácilmente disponible para prevenir la recurrencia peritoneal luego de cirugía por cáncer.
    Notizen: Abstract Continuous hyperthermic peritoneal perfusion (CHPP) with a solution which contains 30 mg mitomycin C and 300 mg cisplatin has been introduced as a prophylactic treatment for peritoneal recurrence after curative resection of 79 advanced gastric cancers. The control group consisted of 81 patients with advanced gastric cancer who underwent curative surgery during the same period. CHPP was performed for 60 minutes by perfusing MMC- and CDDP-containing saline solutions warmed at 43.5°C by a special CHPP device. In patients with pathologically confirmed serosal invasion-positive tumors, the survival rate of the CHPP group was significantly higher than that of the control group. A survival advantage for stage IV patients was also obtained by CHPP. However, there was no survival advantage between the CHPP group and the control group with serosal invasion-negative tumors. Adverse effects were observed in four patients who underwent CHPP: One developed severe bone marrow suppression, and transient hyperazotemia was ebserved in the other three. There was no difference in the incidence of mortality and morbidity between the two groups. These results indicate that CHPP is a safe, readily available prophylactic therapy for peritoneal recurrence after gastric cancer surgery.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 4
    Digitale Medien
    Digitale Medien
    Springer
    Archives of orthopaedic and trauma surgery 117 (1998), S. 173-174 
    ISSN: 1434-3916
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract We report a case of fracture of the hamate hook presenting as median nerve palsy and discuss the etiology of this rarely seen complication. We consider that the median nerve palsy in this case was due to direct nerve compression within the carpal tunnel caused by a displaced fractured hook fragment.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 5
    ISSN: 1573-0867
    Schlagwort(e): fertilizer nitrogen use efficiency ; intercropping ; N budget ; pigeonpea ; sorghum
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract Cropping systems and fertilizer management strategies that effectively use applied nitrogen (N) are important in reducing costs of N inputs. We examined the effect of time of N application on dry matter (DM) and grain yield (GY), N accumulation, the N budget in crop from soil, fertilizer and atmosphere, and the fertilizer N use efficiency (estimated by the conventional difference method, and the direct 15N recovery by the crops), in a sorghum/pigeonpea intercropping system on an Alfisol (Ferric Luvisols (FAO); or Udic Rhodustalf (USDA) in India. Fertilizer N was applied at planting (basal) and at 40 days after sowing (delayed). Nitrogen was applied only to the sorghum rows in the intercropping treatment. Nitrogen derived from air (Ndfa) was estimated by the15 N natural abundance method, and N derived from fertilizer (Ndff) was estimated by the 15N isotope dilution method. Delaying N fertilization till 40 days after sowing (DAS), rather than applying at sowing increased DM and GY of the sorghum, but not of pigeonpea. Delaying N fertilization to sorghum for 40 days significantly (p〈0.001) increased 15N recovery in shoot from 15 to 32% in sole crop, and from 10 to 32% in intercrop. Similarly, there was a significant (p〈0.001) increase in N recovery (by the difference method) from 43 to 59% in sole crop and from 28 to 71 % in intercrop sorghum. Fertilizer N recovery by sole crop pigeonpea (14%) was higher than intercrop pigeonpea (2–4%). Pigeonpea fixed between 120–170 kg ha-1 of atmospheric N throughout the cropping season. Although there was a marked difference in nitrate-N (N03-N) concentrations between basal and delayed treatments at planting, no difference was observed in N03-N concentrations in soil solution between the treatments at 40 DAS. Our data on N accumulation by plants showed that the rate of N depletion or disappearance from the soil solution was 2–3 times faster than N accumulation by plants, suggesting that an appreciable amount of N03-N would disappear from soil solution in the top soil without being utilized by crops during the initial growth stage.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 6
    Digitale Medien
    Digitale Medien
    Springer
    Nutrient cycling in agroecosystems 42 (1995), S. 315-319 
    ISSN: 1573-0867
    Schlagwort(e): biological N2 fixation ; Cajanus cajan L. Millsp. intercropping ; minirhizotron ; natural15N abundance ; pigeonpea
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 7
    Digitale Medien
    Digitale Medien
    Springer
    Histochemistry and cell biology 81 (1984), S. 427-433 
    ISSN: 1432-119X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary In order to reveal the absorption process of elastase from the intestine, hog pancreatic elastase was injected into the ligated jejunum lumen of the rat, and the tissues were cytochemically observed at various times after injection. The peroxidase anti-peroxidase (PAP) method using anti-hog-elastase rabbit antibody was used for light microscopy, and the anti-elastase Fab′-peroxidase conjugate was used for electron microscopy. The tissues stained by the PAP method exhibited a dense deposition of reaction products on the luminal surface of epithelial cells and a moderate deposition in the blood and lymph capillaries of the intestinal villi. Immunoelectron microscopy revealed that the reaction product was deposited on the surface of the microvilli and in their pocketing; some was found in the pinocytotic vesicles in the terminal-web area and on the inner surface of the enlarged smooth endoplasmic reticulum. Round droplets which gave a positive reaction were found in the widened intercellular cleft and the thick basement membrane lining the blood capillaries and lymphatics. The jejunum retained its normal ultrastructure. The results indicate that the elastase molecules, which were introduced into the rat jejunum lumen, were absorbed without being decomposed through healthy intestinal epithelial cells by pinocytosis and translocated into blood and lymph capillaries.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 8
    ISSN: 1432-1971
    Schlagwort(e): Key words: Infective endocarditis —Rahnella aquatilis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract. An 11-month-old girl with congenital heart disease developed infective endocarditis. Blood cultures revealed an unusual gram-negative rod, Rahnella aquatilis. The patient was successfully treated with a combination of netilmicin and ceftazidime. This is the first case report of infective endocarditis caused by this organism. R. aquatilis should be recognized as a clinical pathogen capable of causing life-threatening infection in children and adults.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 9
    ISSN: 1432-8798
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary.  A total of 107 hepatitis C virus (HCV)-infected pregnant women were screened for GB virus C (GBV-C) RNA in their sera, and 11 (10.3%) were positive. Among 11 infants born to these HCV/GBV-C co-infected mothers, GBV-C RNA was detected in 7 (63.6%) while HCV RNA was found in 1 (9.1%) within 1 year after birth: this difference was statistically significant (p = 0.023). The mothers of infected infants had significantly higher serum titers of GBV-C RNA than those of uninfected infants: 106.7±0.5 vs 104.0±1.0 copies/ml in average (p=0.001). The baby in whom HCV RNA was found was also positive for GBV-C RNA, and had an elevation in serum transaminase levels, whereas all the other GBV-C infected infants showed no evidence for hepatitis. A family study, performed on 2 of the 7 infected cases, revealed that all the elder siblings of the index infants were also GBV-C RNA-positive. Nucleotide sequence of GBV-C RNA, amplified by PCR from an NS3 region, was completely identical between the mother and the infant within each family, but varied significantly across different families. These results suggest that GBV-C is more easily transmitted from mother to infant than HCV, although hepatitis is not caused thereby.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 10
    ISSN: 1432-8798
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary We have determined the complete nucleotide sequences of a live attenuated hog cholera virus (HCV) and its progenitor strain. The viral RNA of each strain consisted of 12 298 nucleotides including untranslated regions of 373 and 228 bases at the 5′ and 3′ end, respectively. There was a single large open reading frame spanning 11 697 nucleotides which could encode a large protein of 3 899 amino acids with a calculated molecular weight of 438-kDa. We have found 225 nucleotide difference between the two strains, of which six were located in the untranslated region. Four-sixths of these differences resulted in amino acid substitutions.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...