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Reports on the successful testing of a 100 kVA functional model of a fault current limiter within the current limiter program of Siemens AG. Assembly of the limiter of ten switching elements; Use of thermal coevaporation to deposit YBCO-films on four-inch sapphire wafers; Operational recovery time of the limiter.

The case of an 11-year-old girl with mediastinal stage III B-E Hodgkin's disease is described. She achieved complete remission with combined chemoradiotherapy according to the Swiss Pediatric Oncology Group-HD Protocol 1985. Six months after all therapy was stopped, a slowly growing retrosternal mass was detected. Computed tomography (CT) and gallium-67 single-photon emission CT (SPECT) could not elucidate the true origin of the tumor, nor did ultrasound-guided transthoracic fine-needle puncture. Open biopsy with histologic examination of the lesion has successfully identified the mass as thymic hyperplasia, a rebound immunologic reaction after chemoradiotherapy that mimicked tumor regrowth. [ABSTRACT FROM AUTHOR]

Background/aims: Facial aging is accompanied by modifications in the tensile properties and contours of skin. In the present study we instrumentally assessed and compared the effect of either 0.04% retinol (ROL) 1% melibiose and 4% lactose (MEL) and their association (ROL-ME-L) to increase the firmness and smoothness of facial skin. A 1% salicylic acid (SA) emulsion served as a cosmetic product reference. Methods: A total of 120 women were allocated to four randomized groups of 30 subjects, each group receiving one of the test products or a combination of test products. The tensile properties of facial skin were measured using the Cutometer' on seven occasions during the 12-week treatment and during a 4week post-treatment phase. Fine lines and wrinkles were assessed on replicas by using image analysis after optical shadowing. Results: Significant differences in efficacy and lingering activity were observed between products. SA brought the weakest bene ficial effects. ROL and ME-L provided better efficacy on both the tensile properties and contours of skin. They differed slightly according the nature of the biometrological variables. The combination ROL-ME-L achieved similar or even better results than the best of its components for each given physical property of skin. Conclusions: ROL, ME-L, and ROL-ME-L formulations improve physical properties of skin that are impaired by aging Their activities are notably superior to those of a comparative SA formulation. [ABSTRACT FROM AUTHOR]

Moisturizers, widely used in dermatologic and cosmetic "dry" skin treatments, can improve the skin condition by increasing stratum corneum water content and by other mechanisms. We review the controlled study data that relate to their use in the prevention of irritant contact dermatitis. [ABSTRACT FROM AUTHOR]

Copyright of Langenbecks Archiv fuer Chirurgie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The aim of our pilot study was to test the effect of low dose radiation on classic and occult subfoveal choroidal neovascularization (CNV) in age-related macular degeneration (AMD). The posterior pole of the afflicted eye of 12 patients was irradiated with 5 Gray (Gy), and that of 34 patients with 8 Gy. The radiotherapy was done by a linear accelerator (6 MV X-rays) during 4 consecutive days with daily doses of 1.25 Gy and 2 Gy respectively. At the time of treatment, and 6 weeks, 6 months and 1 year after, a simultaneous fluorescein and ICG angiography of both eyes were carried out, and the distance visual acuity was measured. In none of the cases were we able to note a reduction in the subfoveal membrane's size. With regards to the visual acuity, the evolution was slightly better than the spontaneous courses described in existing literature. Further prospective randomized studies with higher dose radiation are necessary in order to determine the significance of radiotherapy in the treatment of this pathology. [ABSTRACT FROM AUTHOR]

The contributions to the quantity α F( ω) coming from the different vibration modes are calculated for the compounds ThH and Th H. The electronic quantities have been evaluated in a cluster approximation while simple models are used for the phonons. The high transition temperature of ThH is explained by the large contribution of the hydrogen modes to the McMillan λ, which overcompensates the 'deterioration' of the Th-lattice in comparison to the Th-metal. In Th H the hydrogen contribution turns out to be insufficient for a high T. An important property of these substances is the significant admixture of f-states at the Fermi level. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Phytopathology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Langenbecks Archiv fuer Chirurgie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Ageing affects the mechanical properties of skin. Studies using objective measurements on facial skin have been rare and yielded contradictory information. In the present study, the age-related changes occurring in the mechanical properties of facial skin were reviewed using a computerized suction method. A total of 200 healthy women, aged from 17 to 68 years, were enrolled. Data show a significant increase in skin extensibility and a significant decline in elasticity with ageing. These changes become obvious in women approaching 40 years. [ABSTRACT FROM AUTHOR]

Investigates the adverse cutaneous reactions to cosmetic allergens. Consideration of perfume components as frequent allergens in cosmetics; Number of positive reactions to cosmetic allergens by class; Reaction rate of each class of cosmetic allergens identified in the various groups of cosmetic products.

Comments on the study "Physically Short Linear Impedance Transformers," by V. P. McGinn and W. P. Moran, published in the Volume 1, Number 7, September 1988 issue of Microwave and Optical Technology Letters. Discussion on the formula derived by the authors after nulling the left-hand denominator. l

Based on the published literature, the assessment of nonclinical andclinical data on retinol indicates absence of any systemic effects after topical or cosmetic use. Hypervitaminosis A that may be producedby the ingestion of excessive amounts of retinol or retinyl esters has never been associated with topical application. In rabbits treatedwith retinyl palmitate at about three times a prospective human doselevel, no systemic toxicity was observed. Retinol, retinyl esters, and retinaldehyde are devoid of sensitization potential and no evidence of phototoxicity or photoallergy has been obtained. Although retinoids may be degraded to some extent by sunlight, their biological activity appears to be largely retained. In fact, topical retinoids have been shown to improve the conditions of photodamaged and photoaged skin. Topical retinol is absorbed into the epidermis and extensively metabolized, particularly by keratinocytes. Studies in human volunteersprovided no evidence that topically applied retinol or retinoid metabolites are percutaneously absorbed, inducing any detectable changes in their constitutive plasma levels. In the absence of systemic exposure, topical application of the retinoids is not associated with birth defects that have been related to excessive oral intakes. Retinol and its metabolites are not only nongenotoxic but also exert antimutagenic activity. Likewise, retinol and retinoids have antiproliferativeand differentiation-inducing effects that are used effectively in the treatment of human cancer. Retinol is considered to be a safe cosmetic ingredient in the present practices of use and concentration. [ABSTRACT FROM AUTHOR]