1,731,130 research outputs found
Introduzione a Viktor Ullmann. 26 critiche sulle manifestazioni musicali di Theresienstadt
No full textLa figura di V. Ullmann come compositore all'interno del campo di concentramento di Terezin
Oxigéntartalmú heterociklusok Ullmann-reakciói
No full textA 7-brómflavon p-anizidinnel való réz-katalizált keresztkapcsolási reakciójának optimálása. A megfelelő reakciókörülmények megléte után a 7-brómflavon Ullmann-reakciójának vizsgálata különböző aminokkal. A 6-jódflavon Ullmann-reakcióinak vizsgálata aromás, és szekunder alifás aminnal.gjVegyész (MSc)Ms
Hancke & Ullmann // Berlin Neue Friedrichstr. 12
No full textHANCKE & ULLMANN // BERLIN NEUE FRIEDRICHSTR. 12
Hancke & Ullmann // Berlin Neue Friedrichstr. 12 ( -
Chronicle of Ber Bernard Ullmann : 1803 /
No full textAccount of libel against Ber Bernard Ullmann and his imprisonment in Guenzburg together with other community members (English, translated from German translation of Hebrew original, written in 1804)Ber Bernard Ullmann (Pfersee 1751-Augsburg 1837) was the head of the Jewish community in Pfersee (Swabia). Accused by a Jewish informer of having fabricated false money, Ullmann was arrested in 1803 and spent seven months in prison, until the informer confessed his libel.Brief summary in Max Kreutzberger: "Leo Baeck Institute New York, Bibliothek und Archiv; Katalog": C 413copy on MF 83(2) & MF 87(27
Original Amerikanische Schuhe Ullmann u. Kapp
No full textORIGINAL AMERIKANISCHE SCHUHE ULLMANN U. KAPP
Original Amerikanische Schuhe Ullmann u. Kapp ( -
Original Amerikanische Schuhe Ullmann u. Kapp
No full textORIGINAL AMERIKANISCHE SCHUHE ULLMANN U. KAPP
Original Amerikanische Schuhe Ullmann u. Kapp ( -
Ullmann-Like Covalent Bond Coupling without Participation of Metal Atoms
No full textUllmann-like on-surface synthesis is one of the most
appropriate
approaches for the bottom-up fabrication of covalent organic nanostructures
and many successes have been achieved. The Ullmann reaction requires
the oxidative addition of a catalyst (a metal atom in most cases):
the metal atom will insert into a carbon–halogen bond, forming
organometallic intermediates, which are then reductively eliminated
and form C–C covalent bonds. As a result, traditional Ullmann
coupling involves reactions of multiple steps, making it difficult
to control the final product. Moreover, forming the organometallic
intermediates will potentially poison the metal surface catalytic
reactivity. In the study, we used the 2D hBN, an
atomically thin sp2-hybridized sheet with a large band
gap, to protect the Rh(111) metal surface. It is an ideal 2D platform
to decouple the molecular precursor from the Rh(111) surface while
maintaining the reactivity of Rh(111). We realize an Ullmann-like
coupling of a planar biphenylene-based molecule, i.e., 1,8-dibromobiphenylene
(BPBr2), on an hBN/Rh(111) surface with
an ultrahigh selectivity of the biphenylene dimer product, containing
4-, 6-, and 8-membered rings. The reaction mechanism, including electron
wave penetration and the template effect of the hBN, is elucidated by combining low-temperature scanning tunneling
microscopy and density functional theory calculations. Our findings
are expected to play an essential role regarding the high-yield fabrication
of functional nanostructures for future information devices
A two-dimensional structural-acoustic radiation benchmark
No full textA two-dimensional finite element (FE) model is presented, which can be used to validate methods and design criterions for vibroacoustics. A simple beam-like structure, providing different transmission paths for some structure-borne point excitation, is connected to a beam. The latter is acting as a radiator. The acoustic fluid is modeled by means of acoustic elements, and two different boundary conditions are implemented. This results in one model providing free-field conditions (halfspace) and one with a reverberant setting. The model, therefore, enables one to analyze a full acoustic chain of effects (transmission of vibration through the structure and radiation) in a sufficiently complex setting with moderate model size. For an application and a more detailed description of the model see:Sicklinger S. and Ullmann, R.: "Structural power as an acoustic design criterion for the early phase of product design", International Conference on Noise and Vibration Engineering, Leuven, 2018
Kirja-arvostelu : Linn Ullmann (Suom. Jonna Joskitt-Pöyry) : Tyttö, 1983
No full textArvio teoksesta Linn Ullmann: Tyttö, 1983 (Jente, 1983). Suom. Jonna Joskitt-Pöyry. Like 2023. 252 s.nonPeerReviewe
Martha Ullmann correspondence collection. 1932-1935
No full textThe collection holds the letters from Martha Ullmann, née Hummel in Munich and later in Paris to her sister and brother-in-law, Emmy and Ludwig (Louis) Simon, in Toronto, 1932-1935. Also included is an introductory text to the collection written by Martha's niece, Ellen Simon.Martha Ullmann, née Hummel had 2 children, Lotte and Herbert. Martha and Lotte emigrated to Canada via Paris, where they stayed with a cousin, Isy Hummel. Herbert emigrated to Palestine.The Hummel family consisted of three sisters, Emmy, Martha, and Lisl, and their brother Martin. Lisl and her husband Dr. Henry Borsook emigrated to Canada in 1929 and then went on to California. Martin and his wife Edith escaped Vienna to Yugoslavia and then immigrated to New York.The last letter is available only as a photocopy.digitize
- …
