Long-Term Effects of Natural Sunlight under Various Ultraviolet Radiation Conditions on Growth and Photosynthesis of Intertidal Ulva rigida (Chlorophyceae) Cultivated In Situ

2000 ◽  
Vol 43 (2) ◽  
Author(s):  
M. Altamirano ◽  
A. Flores-Moya ◽  
F. L. Figueroa
Keyword(s):  
Ultraviolet Radiation ◽  
Long Term Effects ◽  
Ulva Rigida ◽  
Natural Sunlight ◽  
Radiation Conditions

In situ characterization of metals at extremes

MRS Bulletin ◽  
2010 ◽  
Vol 35 (12) ◽  
pp. 1009-1016 ◽  
Author(s):  
N. D. Browning ◽  
G. H. Campbell ◽  
J. A. Hawreliak ◽  
M. A. Kirk
Keyword(s):  
Structural Evolution ◽  
Extreme Conditions ◽  
Long Term Effects ◽  
Recent Developments ◽  
Definition Of ◽  
Radiation Conditions ◽  
Temperature Strain

The fundamental processes taking place in metals under extreme conditions can occur on ultrafast timescales (i.e., nanoseconds to picoseconds), and yet their result can continue to have a significant impact on the structural properties for many years to follow. The challenge in developing in situ methods for characterization under extreme conditions therefore involves both the modification of the instrumentation to implement the high-temperature, strain, and radiation conditions and the definition of the timescale over which the measurement must be made. While techniques are well established for characterization of the long-term effects of extreme conditions, experiments are only just beginning to probe the initial stages of structural evolution. This article reviews recent developments in optical, x-ray, and electron probes of metals under extreme conditions and also discusses the needs for future experiments and potential pathways to achieving these goals.

scholarly journals Long‐term Effects of 222‐nm ultraviolet radiation C Sterilizing Lamps on Mice Susceptible to Ultraviolet Radiation

2020 ◽  
Vol 96 (4) ◽  
pp. 853-862 ◽  
Author(s):  
Nozomi Yamano ◽  
Makoto Kunisada ◽  
Sachiko Kaidzu ◽  
Kazunobu Sugihara ◽  
Aiko Nishiaki‐Sawada ◽  
...  
Keyword(s):  
Ultraviolet Radiation ◽  
Long Term Effects

scholarly journals Primary Extracellular Matrix Enables Long-Term Cultivation of Human Tumor Oral Mucosa Models

2020 ◽  
Vol 8 ◽  
Author(s):  
Leonie Gronbach ◽  
Philipp Jurmeister ◽  
Monika Schäfer-Korting ◽  
Ulrich Keilholz ◽  
Ingeborg Tinhofer ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Oral Mucosa ◽  
Hypoxia Inducible Factor ◽  
Human Tumor ◽  
Patient Specific ◽  
Long Term Effects ◽  
Tumor Models

3D tumor models clearly outperform 2D cell cultures in recapitulating tissue architecture and drug response. However, their potential in understanding treatment efficacy and resistance development should be better exploited if also long-term effects of treatment could be assessed in vitro. The main disadvantages of the matrices commonly used for in vitro culture are their limited cultivation time and the low comparability with patient-specific matrix properties. Extended cultivation periods are feasible when primary human cells produce the extracellular matrix in situ. Herein, we adapted the hyalograft-3D approach from reconstructed human skin to normal and tumor oral mucosa models and compared the results to bovine collagen-based models. The hyalograft models showed similar morphology and cell proliferation after 7 weeks compared to collagen-based models after 2 weeks of cultivation. Tumor thickness and VEGF expression increased in hyalograft-based tumor models, whereas expression of laminin-332, tenascin C, and hypoxia-inducible factor 1α was lower than in collagen-based models. Taken together, the in situ produced extracellular matrix better confined tumor invasion in the first part of the cultivation period, with continuous tumor proliferation and increasing invasion later on. This proof-of-concept study showed the successful transfer of the hyalograft approach to tumor oral mucosa models and lays the foundation for the assessment of long-term drug treatment effects. Moreover, the use of an animal-derived extracellular matrix is avoided.

Condition assessment of in situ elastomeric bearings

2021 ◽  
Author(s):  
Edoardo Rossi ◽  
Michele D’Amato ◽  
Rosario Gigliotti ◽  
Marco Sebastiani
Keyword(s):  
Modal Analysis ◽  
Extreme Events ◽  
Seismic Isolation ◽  
Operational Modal Analysis ◽  
Structural Components ◽  
Long Term Effects ◽  
Elastomeric Bearings ◽  
Very High

<p>Elastomeric bearings used as seismic isolation devices are key elements in the protection of constructions against earthquakes. They enable structures to exhibit very high performances when subject to extreme events, preventing damage both to structural and non-structural components. Their characteristics, however, are prone to change with time due to long term effects such as aging. Regular inspection and monitoring of their state are thus fundamental activities needed to ensure the required performances. The present work reviews the most common strategies adopted for such purpose, including visual inspections, Operational Modal Analysis (OMA), and quick release tests. An innovative characterisation method is also presented. Such method, with the use of a nanoindenter, enables testing of a small rubber sample (3 mm in diameter) cored from a device. Its suitability is confirmed through a comparison of the same device tested in a traditional setup.</p>

Long-term effects of ultraviolet radiation on growth and photosynthetic performance of polar and cold-temperate macroalgae

2002 ◽  
Vol 140 (6) ◽  
pp. 1117-1127 ◽  
Author(s):  
Michler T. ◽  
Aguilera J. ◽  
Hanelt D. ◽  
Bischof K. ◽  
Wiencke C.
Keyword(s):  
Ultraviolet Radiation ◽  
Photosynthetic Performance ◽  
Long Term Effects

Long-term effects of bacille calmette-guérin perfusion therapy for treatment of transitional cell carcinoma in situ of upper urinary tract

Urology ◽  
2004 ◽  
Vol 63 (6) ◽  
pp. 1084-1088 ◽  
Author(s):  
Yasushi Hayashida ◽  
Koichiro Nomata ◽  
Mitsuru Noguchi ◽  
Jiro Eguchi ◽  
Sigehiko Koga ◽  
...  
Keyword(s):  
Urinary Tract ◽  
Transitional Cell Carcinoma ◽  
Cell Carcinoma ◽  
Carcinoma In Situ ◽  
Transitional Cell ◽  
Upper Urinary Tract ◽  
Long Term Effects ◽  
Bacille Calmette Guerin

LONG-TERM EFFECTS OF BACILLUS CALMETTE-GUERIN PERFUSION THERAPY FOR UPPER URINARY TRACT UROTHELIAL CARCINOMA IN SITU

2008 ◽  
Vol 179 (4S) ◽  
pp. 120-120
Author(s):  
Takahiro Yoneyama ◽  
Hayato Yamamoto ◽  
Akiko Okamoto ◽  
Atsushi Imai ◽  
Ikuya Iwabuchi ◽  
...  
Keyword(s):  
Urinary Tract ◽  
Urothelial Carcinoma ◽  
Carcinoma In Situ ◽  
Upper Urinary Tract ◽  
Bacillus Calmette Guerin ◽  
Long Term Effects ◽  
Urinary Tract Urothelial Carcinoma
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