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Showing 1 to 12 of 316 entries
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Megaherbivores influence trophic guilds structure in African ungulate communities.

Oecologia

Fritz H, Duncan P, Gordon IJ, Illius AW.
PMID: 28547558
Oecologia. 2002 May;131(4):620-625. doi: 10.1007/s00442-002-0919-3. Epub 2002 May 01.

We used a data set of ungulate censuses from 31 natural ecosystems from East and Southern Africa to test two hypotheses: (1) megaherbivores should dominate ungulate communities in ecosystems with high rainfall and low soil nutrient status because of...

The biomolecular era for thoracic surgeons: the example of the ESTS Biology Club.

Journal of thoracic disease

Opitz I, D'Amico TA, Rocco G.
PMID: 24868444
J Thorac Dis. 2014 May;6:S265-71. doi: 10.3978/j.issn.2072-1439.2014.05.01.

Understanding basic mechanisms of lung disease may help to move forward the management of our patients. Molecular biology has affected our diagnostic and therapeutic pathways in the direction of personalized medicine not only for thoracic malignancies. Accordingly, thoracic surgeons...

Charge-transfer crystallites as molecular electrical dopants.

Nature communications

Méndez H, Heimel G, Winkler S, Frisch J, Opitz A, Sauer K, Wegner B, Oehzelt M, Röthel C, Duhm S, Többens D, Koch N, Salzmann I.
PMID: 26440403
Nat Commun. 2015 Oct 06;6:8560. doi: 10.1038/ncomms9560.

Ground-state integer charge transfer is commonly regarded as the basic mechanism of molecular electrical doping in both, conjugated polymers and oligomers. Here, we demonstrate that fundamentally different processes can occur in the two types of organic semiconductors instead. Using...

Constraints on an annihilation signal from a core of constant dark matter density around the milky way center with H.E.S.S.

Physical review letters

Abramowski A, Aharonian F, Ait Benkhali F, Akhperjanian AG, Angüner EO, Backes M, Balenderan S, Balzer A, Barnacka A, Becherini Y, Becker Tjus J, Berge D, Bernhard S, Bernlöhr K, Birsin E, Biteau J, Böttcher M, Boisson C, Bolmont J, Bordas P, Bregeon J, Brun F, Brun P, Bryan M, Bulik T, Carrigan S, Casanova S, Chadwick PM, Chakraborty N, Chalme-Calvet R, Chaves RC, Chrétien M, Colafrancesco S, Cologna G, Conrad J, Couturier C, Cui Y, Davids ID, Degrange B, Deil C, deWilt P, Djannati-Ataï A, Domainko W, Donath A, Drury LO, Dubus G, Dutson K, Dyks J, Dyrda M, Edwards T, Egberts K, Eger P, Espigat P, Farnier C, Fegan S, Feinstein F, Fernandes MV, Fernandez D, Fiasson A, Fontaine G, Förster A, Füßling M, Gabici S, Gajdus M, Gallant YA, Garrigoux T, Giavitto G, Giebels B, Glicenstein JF, Gottschall D, Grondin MH, Grudzińska M, Hadasch D, Häffner S, Hahn J, Harris J, Heinzelmann G, Henri G, Hermann G, Hervet O, Hillert A, Hinton JA, Hofmann W, Hofverberg P, Holler M, Horns D, Ivascenko A, Jacholkowska A, Jahn C, Jamrozy M, Janiak M, Jankowsky F, Jung-Richardt I, Kastendieck MA, Katarzyński K, Katz U, Kaufmann S, Khélifi B, Kieffer M, Klepser S, Klochkov D, Kluźniak W, Kolitzus D, Komin N, Kosack K, Krakau S, Krayzel F, Krüger PP, Laffon H, Lamanna G, Lefaucheur J, Lefranc V, Lemière A, Lemoine-Goumard M, Lenain JP, Lohse T, Lopatin A, Lu CC, Marandon V, Marcowith A, Marx R, Maurin G, Maxted N, Mayer M, McComb TJ, Méhault J, Meintjes PJ, Menzler U, Meyer M, Mitchell AM, Moderski R, Mohamed M, Morå K, Moulin E, Murach T, de Naurois M, Niemiec J, Nolan SJ, Oakes L, Odaka H, Ohm S, Opitz B, Ostrowski M, Oya I, Panter M, Parsons RD, Paz Arribas M, Pekeur NW, Pelletier G, Petrucci PO, Peyaud B, Pita S, Poon H, Pühlhofer G, Punch M, Quirrenbach A, Raab S, Reichardt I, Reimer A, Reimer O, Renaud M, de Los Reyes R, Rieger F, Romoli C, Rosier-Lees S, Rowell G, Rudak B, Rulten CB, Sahakian V, Salek D, Sanchez DA, Santangelo A, Schlickeiser R, Schüssler F, Schulz A, Schwanke U, Schwarzburg S, Schwemmer S, Sol H, Spanier F, Spengler G, Spies F, Stawarz Ł, Steenkamp R, Stegmann C, Stinzing F, Stycz K, Sushch I, Tavernet JP, Tavernier T, Taylor AM, Terrier R, Tluczykont M, Trichard C, Valerius K, van Eldik C, van Soelen B, Vasileiadis G, Veh J, Venter C, Viana A, Vincent P, Vink J, Völk HJ, Volpe F, Vorster M, Vuillaume T, Wagner SJ, Wagner P, Wagner RM, Ward M, Weidinger M, Weitzel Q, White R, Wierzcholska A, Willmann P, Wörnlein A, Wouters D, Yang R, Zabalza V, Zaborov D, Zacharias M, Zdziarski AA, Zech A, Zechlin HS.
PMID: 25768750
Phys Rev Lett. 2015 Feb 27;114(8):081301. doi: 10.1103/PhysRevLett.114.081301. Epub 2015 Feb 24.

An annihilation signal of dark matter is searched for from the central region of the Milky Way. Data acquired in dedicated on-off observations of the Galactic center region with H.E.S.S. are analyzed for this purpose. No significant signal is...

Foraging methods can affect patch choice: an experimental study in Mallard (Anas platyrhynchos).

Behavioural processes

Guillemain M, Fritz H, Blais S.
PMID: 10969189
Behav Processes. 2000 Aug 17;50(2):123-129. doi: 10.1016/s0376-6357(00)00095-4.

Animals can adapt to changes in feeding conditions by switching between foraging methods. Dabbling ducks use different foraging methods, including dabbling in deep water with the head and neck submerged, and grubbing in the mud (or shallow water) where...

Pentagonal dodecahedranes: polyfunctionalization and MS fragmentation.

The Journal of organic chemistry

Landenberger P, Scheumann K, Keller M, Hunkler D, Fritz H, Wörth J, Knothe L, Prinzbach H.
PMID: 11511248
J Org Chem. 2001 Aug 24;66(17):5744-58. doi: 10.1021/jo010170+.

With the use of four- to eight-fold functionalized dodecahedranes (1-3), opportunities to arrive at highly strained dodecahedranes with two to four pairs of vicinal, eclipsed bromine substituents through front-side substitution and addition reactions have been explored. In standard processes,...

Preparation and Conversion of N-Halomethylpyridinium Halides. Comparison with Related Compounds.

The Journal of organic chemistry

Anders E, Opitz A, Wermann K, Wiedel B, Walther M, Imhof W, Görls H.
PMID: 11674410
J Org Chem. 1999 Apr 30;64(9):3113-3121. doi: 10.1021/jo982153z.

N-Halomethylpyridinium halides 1a-f (X-CH(2)Py(+)X(-), X = Cl, Br) have been synthesized from a three-component reaction mixture containing a thionyl halide 5, formaldehyde (6), and a pyridine 7. The salts 1a-f react readily with a variety of heterocyclic nucleophiles to...

[The scientific activity of the Pediatric Clinic of Heidelberg from 1947 to 1951].

El Dia medico

OPITZ H.
PMID: 13020705
Dia Med. 1952 Aug 06;24(49):1258-63.

No abstract available.

[Quantitative characteristics of the initial groups of the electrocardiogram. III. The twofold hexagonal analysis].

Schweizerische Zeitschrift fur Geschichte. Revue suisse d'histoire. Rivista storica svizzera

SCHLOMKA G, OPITZ H.
PMID: 13602719
Schweiz Z Gesch. 1958;9:106-30.

No abstract available.

Iloprost in pulmonary hypertension.

Expert review of respiratory medicine

Ewert R, Gläser S, Opitz C.
PMID: 20477231
Expert Rev Respir Med. 2008 Dec;2(6):689-702. doi: 10.1586/17476348.2.6.689.

Pulmonary hypertension is a clinically relevant, life-threatening disease. Based pathophysiologically on a dysbalance of vasoactive mechanisms, the therapeutic use of vasodilative agents is one of the major treatment options. Prostanoids, such as iloprost, are widely used in the treatment...

Search for a dark matter annihilation signal from the galactic center halo with H.E.S.S.

Physical review letters

Abramowski A, Acero F, Aharonian F, Akhperjanian AG, Anton G, Barnacka A, de Almeida UB, Bazer-Bachi AR, Becherini Y, Becker J, Behera B, Bernlöhr K, Bochow A, Boisson C, Bolmont J, Bordas P, Borrel V, Brucker J, Brun F, Brun P, Bulik T, Büsching I, Carrigan S, Casanova S, Cerruti M, Chadwick PM, Charbonnier A, Chaves RC, Cheesebrough A, Chounet LM, Clapson AC, Coignet G, Conrad J, Dalton M, Daniel MK, Davids ID, Degrange B, Deil C, Dickinson HJ, Djannati-Ataï A, Domainko W, Drury LO, Dubois F, Dubus G, Dyks J, Dyrda M, Egberts K, Eger P, Espigat P, Fallon L, Farnier C, Fegan S, Feinstein F, Fernandes MV, Fiasson A, Fontaine G, Förster A, Füssling M, Gallant YA, Gast H, Gérard L, Gerbig D, Giebels B, Glicenstein JF, Glück B, Goret P, Göring D, Hague JD, Hampf D, Hauser M, Heinz S, Heinzelmann G, Henri G, Hermann G, Hinton JA, Hoffmann A, Hofmann W, Hofverberg P, Horns D, Jacholkowska A, de Jager OC, Jahn C, Jamrozy M, Jung I, Kastendieck MA, Katarzyński K, Katz U, Kaufmann S, Keogh D, Kerschhaggl M, Khangulyan D, Khélifi B, Klochkov D, Kluźniak W, Kneiske T, Komin N, Kosack K, Kossakowski R, Laffon H, Lamanna G, Lennarz D, Lohse T, Lopatin A, Lu CC, Marandon V, Marcowith A, Masbou J, Maurin D, Maxted N, McComb TJ, Medina MC, Méhault J, Moderski R, Moulin E, Naumann CL, Naumann-Godo M, de Naurois M, Nedbal D, Nekrassov D, Nguyen N, Nicholas B, Niemiec J, Nolan SJ, Ohm S, Olive JF, Wilhelmi Ede O, Opitz B, Ostrowski M, Panter M, Arribas MP, Pedaletti G, Pelletier G, Petrucci PO, Pita S, Pühlhofer G, Punch M, Quirrenbach A, Raue M, Rayner SM, Reimer A, Reimer O, Renaud M, de los Reyes R, Rieger F, Ripken J, Rob L, Rosier-Lees S, Rowell G, Rudak B, Rulten CB, Ruppel J, Ryde F, Sahakian V, Santangelo A, Schlickeiser R, Schöck FM, Schönwald A, Schwanke U, Schwarzburg S, Schwemmer S, Shalchi A, Sikora M, Skilton JL, Sol H, Spengler G, Stawarz Ł, Steenkamp R, Stegmann C, Stinzing F, Sushch I, Szostek A, Tavernet JP, Terrier R, Tibolla O, Tluczykont M, Valerius K, van Eldik C, Vasileiadis G, Venter C, Vialle JP, Viana A, Vincent P, Vivier M, Völk HJ, Volpe F, Vorobiov S, Vorster M, Wagner SJ, Ward M, Wierzcholska A, Zajczyk A, Zdziarski AA, Zech A, Zechlin HS.
PMID: 21599352
Phys Rev Lett. 2011 Apr 22;106(16):161301. doi: 10.1103/PhysRevLett.106.161301. Epub 2011 Apr 18.

A search for a very-high-energy (VHE; ≥100  GeV) γ-ray signal from self-annihilating particle dark matter (DM) is performed towards a region of projected distance r∼45-150  pc from the Galactic center. The background-subtracted γ-ray spectrum measured with the High Energy...

Technical Parameters for Laser Acupuncture to Elicit Peripheral and Central Effects: State-of-the-Art and Short Guidelines Based on Results from the Medical University of Graz, the German Academy of Acupuncture, and the Scientific Literature.

Evidence-based complementary and alternative medicine : eCAM

Litscher G, Opitz G.
PMID: 22619693
Evid Based Complement Alternat Med. 2012;2012:697096. doi: 10.1155/2012/697096. Epub 2012 Apr 29.

The scientific literature in the area of laser acupuncture is rather large; however, the actual mechanisms and effects have not yet been proven in detail. Since the early days of laser acupuncture, there are still many open questions concerning...

Showing 1 to 12 of 316 entries