961 resultados para archeologia, industriale, ex, officine, reggiane
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Leipzig, Univ., Diss., 1696
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Erscheinungsjahr lt. "Katalog der Judaica und Hebraica, Frankfurt am Main, 1932". - Teilw. in hebr. Schr.
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Retinal laser photocoagulation is an established and successful treatment for a variety of retinal diseases. While being a valuable treatment modality, laser photocoagulation shows the drawback of employing high energy lasers which are capable of physically destroying the neural retina. For reliable therapy, it is therefore crucial to closely monitor the therapy effects caused in the retinal tissue. A depth resolved representation of optical tissue properties as provided by optical coherence tomography may provide valuable information about the treatment effects in the retinal layers if recorded simultaneously to laser coagulation. Therefore, in this work, the use of ultra-high resolution optical coherence tomography to represent tissue changes caused by conventional and selective retinal photocoagulation is investigated. Laser lesions were placed on porcine retina ex-vivo using a 577 nm laser as well as a pulsed laser at 527 nm built for selective treatment of the retinal pigment epithelium. Applied energies were varied to generate lesions best representing the span from under- to overtreatment. The lesions were examined using a custom-designed optical coherence tomography system with an axial resolution of 1.78 μm and 70 kHz Ascan rate. Optical coherence tomography scans included volume scans before and after irradiation, as well as time lapse scans (Mscan) of the lesions. Results show OCT lesion visibility thresholds to be below the thresholds of ophthalmoscopic inspection. With the ultra-high resolution OCT, 42% - 44% of ophthalmoscopically invisible lesions could be detected and lesions that were under- or overexposed could be distinguished using the OCT data.
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Teilw. in hebr. Schr.
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collegit Godofredus Selig
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Roberto Bellarmino ... auctore
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Teilw. in hebr. Schr.
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Praeside Joh. Jac. Schudt. Respondente Georg. Gustav Difenbach
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Titelbl. fehlt
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interpretationis fide, exemplorum Biblicorum copiâ ... Accesit lexicon breve rabbinico-philosophicum ... cum indice ...
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autore Ioanne Forstero Augustano
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Besetzung: Coro S, Coro A, Coro T, Coro B, Vl 1 2, Va, Trp 1 2, Timp, Org
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Engineered nanomaterials have unique and novel properties enabling wide-ranging new applications in nearly all fields of research. As these new properties have raised concerns about potential adverse effects for the environment and human health, extensive efforts are underway to define reliable, cost- and time-effective, as well as mechanistic-based testing strategies to replace the current method of animal testing, which is still the most prevalent model used for the risk assessment of chemicals. Current approaches for nanomaterials follow this line. The aim of this review is to explore and qualify the relevance of new in vitro and ex vivo models in (nano)material safety assessment, a crucial prerequisite for translation into applications.