| |
|
|
|
|
|
|
|
|
1. |
Record Nr. |
UNINA9910427684703321 |
|
|
Autore |
Cremonesi Llorenc |
|
|
Titolo |
Light scattering from micrometric mineral dust and aggregate particles : effects of structure and shape applied to paleoclimate studies / / Llorenc Cremonesi |
|
|
|
|
|
|
|
Pubbl/distr/stampa |
|
|
Cham, Switzerland : , : Springer, , [2020] |
|
©2020 |
|
|
|
|
|
|
|
|
|
ISBN |
|
|
|
|
|
|
Edizione |
[1st ed. 2020.] |
|
|
|
|
|
Descrizione fisica |
|
1 online resource (XIV, 142 p. 62 illus., 11 illus. in color.) |
|
|
|
|
|
|
Collana |
|
|
|
|
|
|
Disciplina |
|
|
|
|
|
|
Soggetti |
|
|
|
|
|
|
Lingua di pubblicazione |
|
|
|
|
|
|
Formato |
Materiale a stampa |
|
|
|
|
|
Livello bibliografico |
Monografia |
|
|
|
|
|
Nota di contenuto |
|
Introduction -- Scattering Fundamentals -- Scattering Models -- Mineral Dust -- Fractal Aggregates -- Conclusions. |
|
|
|
|
|
|
|
|
Sommario/riassunto |
|
Light scattering from particles in the nanometric and micrometric size range is relevant in several research fields, such as aerosol science and nanotechnology. In many applications, the description of the optical properties of non-spherical, inhomogeneous particles is still inadequate or requires demanding numerical calculations. Lorenz–Mie scattering and effective medium approximations represent currently the main theoretical tools to model such particles, but their effectiveness has been recently called into question. This work examines how the morphology of a particle affects its scattering parameters from an experimental standpoint, supporting findings with extensive simulations. The dust content of Antarctic, Greenlandic, and Alpine ice cores is analysed with a particle-by-particle approach. Moreover, a study on colloidal aggregates shows that correlations among the fields radiated by primary particles are responsible for the poor agreement of effective medium approximations with experimental results. On the theoretical side, an interpretation in terms of the structure factor is given, which satisfactorily describes the data. The insights of this thesis are relevant for quantifying the contribution of mineral dust to the radiative energy balance of the Earth. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2. |
Record Nr. |
UNINA9910298337803321 |
|
|
Autore |
Gonzalez Michael J |
|
|
Titolo |
New Insights on Vitamin C and Cancer / / by Michael J. Gonzalez, Jorge R. Miranda-Massari |
|
|
|
|
|
|
|
Pubbl/distr/stampa |
|
|
New York, NY : , : Springer New York : , : Imprint : Springer, , 2014 |
|
|
|
|
|
|
|
ISBN |
|
|
|
|
|
|
Edizione |
[1st ed. 2014.] |
|
|
|
|
|
Descrizione fisica |
|
1 online resource (74 p.) |
|
|
|
|
|
|
Collana |
|
SpringerBriefs in Cancer Research, , 2194-1173 |
|
|
|
|
|
|
Disciplina |
|
|
|
|
|
|
|
|
Soggetti |
|
Cancer - Research |
Molecular biology |
Medicine |
Cancer Research |
Molecular Medicine |
Biomedicine, general |
|
|
|
|
|
|
|
|
Lingua di pubblicazione |
|
|
|
|
|
|
Formato |
Materiale a stampa |
|
|
|
|
|
Livello bibliografico |
Monografia |
|
|
|
|
|
Note generali |
|
Description based upon print version of record. |
|
|
|
|
|
|
Nota di bibliografia |
|
Includes bibliographical references at the end of each chapters and index. |
|
|
|
|
|
|
|
|
Nota di contenuto |
|
Overview of Vitamin C and Cancer -- Anticancer Mechanisms of Vitamin C -- Potential Therapeutics for Vitamin C and Cancer -- Conclusion -- Appendix. |
|
|
|
|
|
|
|
|
Sommario/riassunto |
|
Research on vitamin C and its effects on cancer is growing in popularity around the world as positive research continues to accumulate building a stronger case for its effectiveness. This concise SpringerBrief on Vitamin C and Cancer presents the latest findings on how vitamin C induces apoptosis. A high concentration of vitamin C allows for ascorbate to generate hydrogen peroxide in tissue that can selectively kill cancer cells. Research has confirmed that high-dose vitamin C is cytotoxic to a wide variety of cancer cell lines, and that it also boosts the anti-cancer activity of several common chemotherapy drugs. Vitamin C also does more than just kill cancer cells. It boosts immunity by stimulating collagen formation to help the body wall off the tumor. It inhibits hyaluronidase, an enzyme that tumors use to metastasize |
|
|
|
|
|
|
|
|
|
|
and invade other organs throughout the body. This concise and up-to-date Brief is geared towards cancer researchers and scientists, as well as physicians interested in the basic science and the translational potential of vitamin C in cancer therapeutics. |
|
|
|
|
|
| |