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Showing 13 to 24 of 324 entries
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The hydrozoan life cycle: a small secreted protein is involved in specification of the polyp stage.

Development genes and evolution

Aerne BL, Aerne BL.
PMID: 24173592
Dev Genes Evol. 1996 Dec;206(5):337-43. doi: 10.1007/s004270050061.

In the life cycle of many Hydrozoa (Cnidaria), the pelagic medusa is produced by a budding process from the sessile polyp stage. In order to investigate the molecular mechanisms controlling medusa budding, we screened a cDNA library made from...

Ammonothermal Synthesis, Crystal Structure, and Properties of the Ytterbium(II) and Ytterbium(III) Amides and the First Two Rare-Earth-Metal Guanidinates, YbC(NH)3 and Yb(CN3H4)3.

Inorganic chemistry

Görne AL, George J, van Leusen J, Dück G, Jacobs P, Chogondahalli Muniraju NK, Dronskowski R.
PMID: 27248288
Inorg Chem. 2016 Jun 20;55(12):6161-8. doi: 10.1021/acs.inorgchem.6b00736. Epub 2016 Jun 01.

We report the oxidation-controlled synthesis of the ytterbium amides Yb(NH2)2 and Yb(NH2)3 and the first rare-earth-metal guanidinates YbC(NH)3 and Yb(CN3H4)3 from liquid ammonia. For Yb(NH2)2, we present experimental atomic displacement parameters from powder X-ray diffraction (PXRD) and density functional...

New advanced operational regime on the W7-AS stellarator.

Physical review letters

McCormick K, Grigull P, Burhenn R, Brakel R, Ehmler H, Feng Y, Gadelmeier F, Giannone L, Hildebrandt D, Hirsch M, Jaenicke R, Kisslinger J, Klinger T, Klose S, Knauer JP, König R, Kühner G, Laqua HP, Naujoks D, Niedermeyer H, Pasch E, Ramasubramanian N, Rust N, Sardei F, Wagner F, Weller A, Wenzel U, Werner A.
PMID: 12097046
Phys Rev Lett. 2002 Jul 01;89(1):015001. doi: 10.1103/PhysRevLett.89.015001. Epub 2002 Jun 11.

A promising new plasma operational regime on the Wendelstein stellarator W7-AS has been discovered. It is extant above a threshold density and characterized by flat density profiles, high energy and low impurity confinement times, and edge-localized radiation. Impurity accumulation...

Synthesis of Enantiomerically Pure Morphine Alkaloids: The Hydrophenanthrene Route.

The Journal of organic chemistry

Trauner D, Bats JW, Werner A, Mulzer J.
PMID: 11672195
J Org Chem. 1998 Aug 21;63(17):5908-5918. doi: 10.1021/jo9805394.

A concise, linear, total synthesis of (-)-dihydrocodeinone-a close synthetic precursor of (-)-codeine and (-)-morphine-has been achieved. The carbocyclic core of the alkaloid was provided in the form of a phenanthrenone, which was resolved by chromatography on cellulose triacetate. A...

EDMUND ENGELMAN: PHOTOGRAPHER OF SIGMUND FREUD'S HOME AND OFFICES.

The International journal of psycho-analysis

Werner A.
PMID: 12028702
Int J Psychoanal. 2002 Apr;83:445-451. doi: 10.1516/kbkw-07uu-wpek-anm8.

Over the course of several days in May 1938, Edmund Engelman, a young, talented and resourceful Viennese photographer, immortalised the home and offices of Sigmund Freud in a series of pictures that represent the fullest visual documentation of the...

Pathology quiz case: nodular sclerosing Hodgkin lymphoma.

Archives of otolaryngology--head & neck surgery

Schroeder AA, Derkay CS, Warner AL.
PMID: 11587615
Arch Otolaryngol Head Neck Surg. 2001 Oct;127(10):1281-2. doi: 10.1001/archotol.127.10.1281.

No abstract available.

Comparative efficacy of some ambulatory (office) dermatologic therapies in 1947-1948 and in 1957-1958.

Archives of dermatology

WEINER AL.
PMID: 13843569
Arch Dermatol. 1960 Aug;82:194-6. doi: 10.1001/archderm.1960.01580020036005.

No abstract available.

Formation of a freely suspended membrane via a combination of interfacial reaction and wetting.

Langmuir : the ACS journal of surfaces and colloids

McNamee CE, Jaumann M, Möller M, Ding A, Hemeltjen S, Ebert S, Baumann W, Goedel WA.
PMID: 16262308
Langmuir. 2005 Nov 08;21(23):10475-80. doi: 10.1021/la0509089.

Applying poly(ethoxysiloxane) (a liquid non-water-soluble polymer that can be hydrolyzed and cross-linked by diluted acids) to an air/pH 1 water interface gave rise to thin homogeneous solid layers. These layers were strong enough to be transferable to electron microscopy...

Maleimido-terminated self-assembled monolayers.

Chemistry (Weinheim an der Bergstrasse, Germany)

Wang Y, Cai J, Rauscher H, Behm RJ, Goedel WA.
PMID: 15844130
Chemistry. 2005 Jun 20;11(13):3968-78. doi: 10.1002/chem.200400896.

Four approaches have been explored for the preparation of maleimido-functionalized self-assembled monolayers (SAMs) on silicon. SAMs prepared by self-assembly of maleimido-functionalized alkyltrichlorosilanes (11-maleimido-undecyl-trichlorosilane) on oxide-covered silicon yield higher signals from maleimido functionalities in ATR-IR (attenuated total reflection IR) spectroscopy...

Electronic switching of single silicon atoms by molecular field effects.

Journal of the American Chemical Society

Harikumar KR, Polanyi JC, Sloan PA, Ayissi S, Hofer WA.
PMID: 17177429
J Am Chem Soc. 2006 Dec 27;128(51):16791-7. doi: 10.1021/ja062874c.

We have observed on-off switching of scanning tunneling microscope current flow to silicon adatoms of the Si(111)-(7 x 7) surface that are enclosed within a bistable dimeric corral of self-assembled chlorododecane molecules. These thermally activated oscillations amounted to an...

Organic homojunction diodes with a high built-in potential: interpretation of the current-voltage characteristics by a generalized Einstein relation.

Physical review letters

Harada K, Werner AG, Pfeiffer M, Bloom CJ, Elliott CM, Leo K.
PMID: 15698298
Phys Rev Lett. 2005 Jan 28;94(3):036601. doi: 10.1103/PhysRevLett.94.036601. Epub 2005 Jan 24.

We realize p- and n-type doping of the organic semiconductor zinc-phthalocyanine using a novel strong organic donor. This allows us to demonstrate the first stable and reproducible organic p-n homojunctions. The diodes show very high built-in potentials, attractive, e.g.,...

W7-X magnetic diagnostics: Rogowski coil performance for very long pulses.

The Review of scientific instruments

Werner A, Endler M, Geiger J, Koenig R.
PMID: 19044606
Rev Sci Instrum. 2008 Oct;79(10):10F122. doi: 10.1063/1.2957933.

Stellerators can be operated without the need of significant plasma current for generation of poloidal magnetic field components. Wendelstein 7-X (W7-X) is optimized for stiff magnetic configurations by minimizing pressure driven currents, such as bootstrap and Pfirsch-Schluter currents. In...

Showing 13 to 24 of 324 entries