Results 131 to 140 of about 12,725 (235)

Photochemisch erzeugte Oxetane als Schlüssel zur endergonen Cyclopropansynthese

open access: yesAngewandte Chemie, Volume 138, Issue 35, 24 August 2026.
Eine neuartige Oxetan‐zu‐Cyclopropan‐Umlagerung eröffnet einen atomökonomischen Zugang zu dicht funktionalisierten Cyclopropanen aus Furanen und photochemisch aktivierten Aldehyden. Die erhaltenen Strukturen erschließen komplexe bioaktive Motive und fungieren als vielseitige Plattform für die asymmetrische Cyclopropansynthese.
Tim Köglmeier   +2 more
wiley   +1 more source

L'éponge de Menger -itération 5-

open access: yes, 2014
The Menger sponge -iteration 5- (L'éponge de Menger -itération 5-
Colonna, Jean-François
core   +1 more source

[Business card of Max Menger]

open access: yes
With handwritten notes.1 business card(カール・メンガー文庫の手沢本および関連資料のデジタル化公開)は公益財団法人図書館振興財団の2024年度の助成を受けて実施しています。Location of original: Center for Historical Social Science Literature, Hitotsubashi University44 ...
Menger, Max, 1838-1911
core  

Some weak covering properties and infinite games

open access: yesOpen Mathematics, 2014
Sakai Masami
doaj   +1 more source

On star-C-menger spaces

open access: yes, 2015
A space X is star-C-Menger if for each sequence (Un : n ∈ N) of open covers of X there exists a sequence (Ksub>n : n ∈ N) of countably compact subsets of X such that {St(Kn; Un) : n ∈ N} is an open cover of X.
Yin, Zheng, Song, Yan-Kui
core  

L'éponge de Menger -itération 1-

open access: yes, 2014
The Menger sponge -iteration 1- (L'éponge de Menger -itération 1-
Colonna, Jean-François
core   +1 more source

Sự bảo tồn một số tính chất topo qua ánh xạ liên tục

open access: yesTạp chí Khoa học và Công nghệ
Bài toán về sự bảo tồn các tính chất topo thông qua các ánh xạ là một trong những bài toán trọng tâm của topo đại cương. Vào năm 2015, Y. K. Song và R. Li đã chứng minh rằng, không gian Hurewicz yếu được bảo tồn qua ánh xạ liên tục ([1]).
Nguyễn Xuân Trúc   +3 more
doaj  

L'éponge de Menger -itération 2-

open access: yes, 2014
The Menger sponge -iteration 2- (L'éponge de Menger -itération 2-
Colonna, Jean-François
core   +1 more source

Correction: On the crossroads of interdisciplinary medicine in amyloidosis - study protocol for a single-center interdisciplinary registry study. [PDF]

open access: yesPLoS One
Pernice H   +23 more
europepmc   +1 more source

Prolonged Ischemia Induces Cellular Stress, Stimulates Extracellular Matrix Remodeling and Compromises the Viability of Human Cancellous Bone Grafts. [PDF]

open access: yesCells
Menger MM   +12 more
europepmc   +1 more source

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