PTOPO: Computing the geometry and the topology of parametric curves

Autor: Katsamaki, Christina, Rouillier, Fabrice, Tsigaridas, Elias, Zafeirakopoulos, Zafeirakis

Publikováno v: Journal of Symbolic Computation
Journal of Symbolic Computation, 2022, ⟨10.1016/j.jsc.2022.08.012⟩

We consider the problem of computing the topology and describing the geometry of a parametric curve in $\mathbb{R}^n$. We present an algorithm, PTOPO, that constructs an abstract graph that is isotopic to the curve in the embedding space. Our method

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::156d289af4e0ead91ef4752a4ea5a047
https://doi.org/10.1016/j.jsc.2022.08.012

PTOPO

Autor: Fabrice Rouillier, Zafeirakis Zafeirakopoulos, Christina Katsamaki, Elias P. Tsigaridas

Publikováno v: ACM Communications in Computer Algebra
ACM Communications in Computer Algebra, 2020, 54 (2), pp.49-52. ⟨10.1145/3427218.3427223⟩
ACM Communications in Computer Algebra, Association for Computing Machinery (ACM), 2020, 54 (2), pp.49-52. ⟨10.1145/3427218.3427223⟩

International audience; PTOPO is a MAPLE package computing the topology and describing the geometry of a parametric plane curve. The algorithm behind PTOPO constructs an abstract graph that is isotopic to the curve. PTOPO exploits the benefits of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0426cc366f69b75bdba04c625a398f3
https://doi.org/10.1145/3427218.3427223

Through the challenging synthesis of tetraphenylporphyrin derivatives bearing nitroxide moieties

Autor: Catherine Hirel, Ismail Fidan, Emel Önal, Dominique Luneau

Publikováno v: Journal of Porphyrins and Phthalocyanines
Journal of Porphyrins and Phthalocyanines, World Scientific Publishing, 2019, Women in Porphyrin Science, 23 (04n05), pp.584-588. ⟨10.1142/S1088424619500500⟩

Hirel, Catherine/0000-0002-6297-5650; LUNEAU, Dominique/0000-0002-1831-7693 Tetraphenylporphyrin derivatives a synthetic heterocycles with convenient preparation and a richness of properties which make them attractive in broad fields such as energy,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f11dfb2c64f36789e250350a3cfb8e76
https://doi.org/10.1142/9789811223556_0040

Surfactant-Free Direct Access to Porphyrin-Cross-Linked Nanogels for Photodynamic and Photothermal Therapy

Autor: Lik Voon Kiew, Laura Chambre, Wu Yi Chong, Lip Yong Chung, Amitav Sanyal, Gülçin Ekineker, Yann Bretonnière, Wen Shang Saw, Hong Boon Lee, Fabienne Dumoulin

Publikováno v: Bioconjugate Chemistry
Bioconjugate Chemistry, 2018, 29 (12), pp.4149-4159. ⟨10.1021/acs.bioconjchem.8b00787⟩
Bioconjugate Chemistry, American Chemical Society, 2018, 29 (12), pp.4149-4159. ⟨10.1021/acs.bioconjchem.8b00787⟩

Photosensitizing nanogels were obtained through a surfactant-free single-step protocol by using a porphyrin-based cross-linker for stabilizing self-assembled nanosized aggregates of thermoresponsive copolymers. Nanogels with varying amounts of porphy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3da7d863bb9a2fe12ab83ce1711c86de
https://doi.org/10.1021/acs.bioconjchem.8b00787

Synthetic Access to a Pure Polyradical Architecture: Nucleophilic Insertion of Nitronyl Nitroxide on a Cyclotriphosphazene Scaffold

Autor: Vefa Ahsen, Yusuf Yerli, Emel Önal, Dominique Luneau, Ismail Fidan, Catherine Hirel

Publikováno v: ChemPlusChem
ChemPlusChem, Wiley, 2017, 82 (12), pp.1384-1389. ⟨10.1002/cplu.201700392⟩

International audience; An optimized nucleophilic synthetic approach featuring mild conditions and microwave energy was utilized to circumvent the classical Ullman procedure and access a polynitronyl nitroxide radical easily and in pure form. The sim

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2035ba77666c2f10000e5e2303c38944
https://doi.org/10.1002/cplu.201700392