نتایج جستجو برای: photosensitivity
تعداد نتایج: 2178 فیلتر نتایج به سال:
Ultraviolet A photosensitivity is a debilitating symptom associated with the metabolic disorder Smith-Lemli-Opitz syndrome (SLOS). SLOS is a manifestation of the deficiency of 7-dehydrocholesterol reductase, an enzyme involved in the cholesterol biosynthesis. As a result several abnormal intermediary compounds are formed among which Cholesta 5, 7, 9(11)-trien-3beta-ol is the most likely cause o...
Narrow gaps and a "built-in" potential originating from the different work functions of reduced graphene oxide (RGO) and titanium electrodes are used to explain the improved photosensitivity of the poly(3-hexylthiophene) photodetectors with asymmetrical RGO-Ti electrodes presented here compared to those based on symmetrical electrodes. Easy processing, high photosensitivity, high on/off ratio, ...
We report the occurrence of skin toxicities in pediatric oncology patients on concomitant treatment with voriconazole and methotrexate (MTX). Of 23 patients who received this combination, 11 patients suffered from cheilitis and/or photosensitivity. In contrast, only in 1 of 9 patients who received voriconazole without MTX was photosensitivity observed. A mechanism of action was not able to be i...
PURPOSE Photosensitivity can represent a serious problem in epilepsy patients, also because pharmacologic treatment is often ineffective. Nonpharmacologic treatment using blue sunglasses is effective and safe in controlling photosensitivity, but large series of patients have never been studied. METHODS This multicenter study was conducted in 12 epilepsy centers in northern, central, southern,...
There are presented absorption of light, photosensitivity and roentgen spectra at the temperature of 78 K and 293 K of Ga2S3 and GaSe crystals as well as crystals intercalated with Cd. The direct band gap of Ga2S3 crystals intercalated with Cd is equal to 3.15 eV (78K) and respectively 3.407 eV at the temperature of 78 K. The indirect bandgap of Ga2S3:Cd is 2.99 eV (293 K) and at the temperatur...
The cutaneous diseases associated with progesterone are autoimmune progesterone dermatitis, erythema multiforme-like eruption, drug-induced progesterone dermatitis and solar urticaria. Estrogen and progesterone are widely used in oral contraceptives and hormone replacement therapies, and they are rarely known to cause a photosensitive reaction. The mechanism of contraceptive-induced photosensit...
The absorption of quanta by rhodopsin leads to the contraction of frog iris muscle. The contractions reach a maximum after about 8 sec. in the light. When the light is turned off the irises relax exponentially with a half-time of about 6 sec. Membrane polarization is not necessary for the response but calcium movement and membrane permeability changes probably are. The response is not mediated ...
The photosensitivity of the active site hydrogenases is an opportunity for studying its reactivity. However, photoinhibition certain may have a negative impact on H 2 photoproduction.
Background: Most dermatologic and psychiatric providers are familiar with the entity of delusional infestation (DI). DI involves the fixed, false belief that one is infested with animate or inanimate matter and is associated with abnormal cutaneous symptoms such as biting or crawling, in the absence of any objective evidence. Although DI is more commonly encountered and discussed in the psychod...
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