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  • Articles: DFG German National Licenses  (17)
  • 1995-1999  (14)
  • 1990-1994  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 74 (1999), S. 2444-2446 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The diffusion behavior at the Cu(In, Ga)Se2 (CIGS)/CdS interface of high efficiency CIGS thin film solar cells has been investigated using energy dispersive x-ray spectroscopy (EDX) and transmission electron microscopy. CdS layers were deposited on CIGS thin films using the chemical bath deposition (CBD) process. EDX analysis revealed that Cd was present in the CIGS layer approximately 100 Å from the interface boundary. In contrast to the diffusion of Cd, the Cu concentration decreased near the surface of the CIGS film, suggesting substitution of Cd for Cu atoms. These results are direct evidence of Cd diffusion into CIGS thin films during the CBD process. © 1999 American Institute of Physics.
    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 619 (1991), 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
    ISSN: 1433-3023
    Keywords: Amezinium ; Estrogen ; Progesterone ; Rabbit urethra
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effect of amezinium, a new antihypotensive agent, and hormonal treatment on the female rabbit urethra was investigated. Cumulative dose responses were obtained for amezinium and norepinephrine on strips of muscle from the urethras of ovariectomized female rabbits by means of the tissuebath system. Amezinium enhanced the response to electrical field stimulation and showed a direct contractile response on the urethra. These responses were only about 20% of the maximum norepinephrine response. The contractile response to amezinium was completely blocked by prazosin. When rabbits were pretreated with estrogen, with or without progesterone, for 4 weeks, the response to amezinium increased to 40% of the maximum norepinephrine response. Although amezinium enhances muscle contractile responses to electrical stimulation, this effect is strong when amezinium is used alone; concurrent estrogen treatment improves the effects of amezinium.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    International urogynecology journal 5 (1994), S. 208-211 
    ISSN: 1433-3023
    Keywords: Estrogen replacement ; Irritative voiding symptoms ; Postmenopausal women
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Hormonal replacement therapy was carried out on 24 postmenopausal women who had chronic irritative lower urinary tract symptoms without definable causes. They all underwent bacteriological, endoscopic and urodynamic evaluations, and were diagnosed as having no abnormalities. Depot estradiol (4 mg i.m.) was administered for 2 months at 2-weekly intervals. Two patients discontinued the study because of genital bleeding. After the treatment subjective symptoms, including urinary frequency, urgency, urge incontinence, sense of incomplete emptying and lower abdominal discomfort, were relieved in more than 80% of the patients. Diurnal frequency and nocturia had significantly decreased. Urodynamic assessment revealed that volume at first sensation and maximum cystometric capacity were increased by estrogen therapy. It appeared that estrogen therapy improved the hypersensitivity of the lower urinary tract and relieved chronic voiding symptoms in postmenopausal women.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1434-0879
    Keywords: Key words Varicocele ; Nuclear magnetic resonance ; Flow cytometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To assess testicular function in experimental varicocele rats, we used 31P magnetic resonance (MR) spectroscopy and compared MR spectroscopic parameters with flow cytometric DNA analysis. In vivo 31P MR spectroscopy and flow cytometric DNA analysis of testes were performed in 10 sham-operated and 9 induced varicocele rats. Although the testicular phosphomonoester (PM)/ATP ratio did not differ between sham-operated and induced varicocele rats, the phosphodiester (PD)/ATP ratio was significantly reduced and the inorganic phosphate (Pi)/ATP ratio was significantly increased in induced varicocele rats. There was no difference between the right and left sides. DNA flow cytometry showed a decrease in the percentage of haploid cells in induced varicocele rats, regardless of the side. This study indicates that in vivo 31P MR spectroscopy provides valuable information for assessment of testicular function.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 48 (1992), S. 667-671 
    ISSN: 1420-9071
    Keywords: Catecholamine ; vas deferens ; adrenal gland ; 6-hydroxydopamine ; alpha-methyl-para-tyrosine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Experiments were carried out to elucidate the role of central catecholamines in regulating catecholamine metabolism in the vas deferens and adrenal gland of the rat. Rats were injected intracerebroventricularly (i.c.v.) with either vehicle or 6-hydroxydopamine (6-OHDA). Groups of animals pretreated with vehicle or 6-OHDA (i.c.v.) were injected intraperitoneally (i.p.) with alpha-methyl-para-tyrosine (AMT), a tyrosine hydroxylase inhibitor. Catecholamine turnover rates were estimated by determining norepinephrine or epinephrine content after administrating AMT. Central norepinephrine and dopamine contents decreased significantly (p〈0.05) after treatment with 6-OHDA and AMT. The norepinephrine content of the vas deferens of rats pretreated with 6-OHDA was markedly reduced (p〈0.001) after administration of AMT, whereas that of the vehicle-treated rats remained unchanged. Administration of 6-OHDA had no effect on the norepinephrine or epinephrine content of the adrenal gland. The present results indicate that central monoaminergic neurons have an inhibitory effect on the adrenergic neurons of the vas deferens. In contrast, this inhibitory regulation does not appear to be exerted on the adrenal glands.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1971
    Keywords: Key words: Common atrioventricular value — Right atrial isomerism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The objective of the study was to examine the relation between the morphology of the common atrioventricular valve and regurgitation of the valve in patients with right atrial isomerism. We examined seven consecutive patients with documented right atrial isomerism who subsequently underwent postmortem examination during a 10-year period. The degree of regurgitation and the diameters of the common valve were evaluated via cineangiography, and the site of regurgitation was evaluated by echocardiography. The morphology of the common atrioventricular valve was assessed further at autopsy. Cineangiography revealed valve diameters ranging from 14.8 to 27.8 mm (mean 20.9 mm). Valvar regurgitation was revealed within 2 months of birth in all patients. Regurgitation abruptly worsened in three patients after placement of a Blalock–Taussig shunt or a central shunt and postintubation. Autopsies revealed that the common atrioventricular valve consisted of four leaflets in five patients, and three leaflets in two. The anterior leaflets were large and protruding in all patients, and the lateral leaflets were thickened in six. All patients had a mass consisting of the left lateral leaflets and chordae with direct attachment of the chordae to the ventricular muscle (the right lateral leaflet was attached to the ventricular muscle and immobile in one patient). The lateral leaflets clung to the ventricular wall and exhibited poor movement in six patients. Leaflets with poor mobility corresponded to the regurgitant valvar site as assessed by echocardiography in six patients; and the regurgitation in three patients with acute deterioration occurred at the valvar side with poor mobility. It is concluded that the common atrioventricular valve in patients with right atrial isomerism has morphologic characteristics that may be associated with valvar regurgitation and malignant potential for abrupt deterioration after replacement of systemic–pulmonary shunting.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    International urogynecology journal 6 (1995), S. 130-137 
    ISSN: 1433-3023
    Keywords: Bladder dysfunction ; Hysterectomy ; Late effect ; Radiotherapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A serial urodynamic study was performed in 491 patients with uterine cancer following radical hysterectomy (RH) involving postoperative pelvic radiation (RH+RT) and extended hysterectomy (EH) for 10 years after these respective treatments. The following evidence is presented: (1) increased volume of residual urine and sensory impairment occurred 1–2 months after radical hysterectomy with or without radiation, but was rarely seen in the EH group: (2) increased residual urine volume in the RH group gradually subsided 1–3 years after the treatment, while the RH+RT treatment resulted in a slight reduction: (3) late maximum cytometric capacity in the EH and RH groups remained stable throughout the study, but the RH+RT group showed a lower capacity (P〈0.05) than the EH group, except in one set of determinations. (4) a high incidence of low bladder compliance in the RH group at 1–2 months decreased thereafter, whereas in the RH+RT group bladder compliance remained poor (23%) up to 7–10 years after treatment. In the EH group low bladder compliance was rarely seen: (5) sensory impairment, urinary incontinence and difficulty on urination remained unimproved in many patients in the RH+RT group, while the incidence of subsequent urological operations in the EH group was lower (P〈0.05) than in the RH+RT group. Based on these findings, EH appears to be more beneficial for the retention of normal bladder function and radical hysterectomy with postoperative radiation results in deterioration of bladder activity.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    International urology and nephrology 31 (1999), S. 709-713 
    ISSN: 1573-2584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We describe an 11-month-old boy with karyotype of 47,XYY who presented with bilateral cryptorchidism, and discuss the hormonal condition of the patient.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1573-2584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We investigated the relationship between histological composition of the prostate and urodynamic outcome after transurethral resection of the prostate (TURP) in 27 patients with symptomatic benign prostatic hyperplasia (BPH). The histological analysis was performed using computer-assisted quantitative morphometry. Before and after TURP, group-specific urethral resistance factor (URA) was estimated by pressure-flow study. A significant correlation was found (p = 0.01) between the area density of prostate smooth muscle and the improvement in URA. However, no other histological components correlated with the improvement in URA. These facts suggest that the percent area density of prostate smooth muscle in prostatic adenoma appears to be a useful predictive factor for treatment of BPH.
    Type of Medium: Electronic Resource
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