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Showing 1 to 12 of 99 entries
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Highly selective dimerization and trimerization of isobutene to linearly linked products by using nickel catalysts.

Chemistry, an Asian journal

Behr A, Rentmeister N, Seidensticker T, Vosberg J, Peitz S, Maschmeyer D.
PMID: 25202770
Chem Asian J. 2014 Feb;9(2):596-601. doi: 10.1002/asia.201301263.

The unique linear linkage of isobutene to generate highly valuable C8 precursors for plasticizers is feasible by using special nickel catalysts. (4-Cyclooctene-1-yl)(1,1,1,5,5,5-hexafluoro-2,4-acetylacetonato)nickel and aluminum-alkyl-activated nickel acetylacetonates produce isobutene dimers with high selectivities of up to 95%. Moreover, selectivity for...

Improvement of Contrast Media Enhancement in CTA Evaluating Pulmonary Embolism by Utilizing 'Delayed' Bolus Tracking in the Descending Aorta.

Polish journal of radiology

Damm R, Mohnike K, Gazis A, Rogits B, Seidensticker M, Ricke J, Pech M.
PMID: 27668026
Pol J Radiol. 2016 Sep 05;81:422-7. doi: 10.12659/PJR.897456. eCollection 2016.

BACKGROUND: As standard bolus triggering in the pulmonary trunk sometimes fails to achieve sufficient enhancement in the pulmonary arteries, the study investigates an alternative, 'delayed' position of the tracking ROI in the descending aorta.MATERIAL/METHODS: Retrospective analysis of 143 patients...

Efficacy and safety of image-guided interstitial single fraction high-dose-rate brachytherapy in the management of metastatic malignant melanoma.

Journal of contemporary brachytherapy

Bretschneider T, Mohnike K, Hass P, Seidensticker R, Göppner D, Dudeck O, Streitparth F, Ricke J.
PMID: 26034497
J Contemp Brachytherapy. 2015 Apr;7(2):154-60. doi: 10.5114/jcb.2015.51095. Epub 2015 Apr 20.

PURPOSE: Computed tomography (CT) or magnetic resonance imaging (MRI) guided brachytherapy provides high tumor control rates in hepatocellular carcinoma (HCC) and colorectal liver metastases. In contrast to thermal ablation methods such as radiofrequency ablation (RFA), much less restrictions apply...

Direct Synthesis of an α,ω-Diester from 2,7-Octadienol as Bulk Feedstock in Three Tandem Catalytic Steps.

Chemistry (Weinheim an der Bergstrasse, Germany)

Ostrowski KA, Vogelsang D, Seidensticker T, Vorholt AJ.
PMID: 26691281
Chemistry. 2016 Jan 26;22(5):1840-6. doi: 10.1002/chem.201503785. Epub 2015 Dec 22.

A new tandem catalytic process was designed and developed as a tool for the direct conversion of the widely available feedstock 2,7-octadienol into an α,ω-diester. This innovative auto-tandem catalysis is atom efficient and consists of three consecutive palladium-catalysed reactions:...

Peripheral retinal non-perfusion and treatment response in branch retinal vein occlusion.

International journal of ophthalmology

Abri Aghdam K, Reznicek L, Soltan Sanjari M, Framme C, Bajor A, Klingenstein A, Kernt M, Seidensticker F.
PMID: 27366688
Int J Ophthalmol. 2016 Jun 18;9(6):858-62. doi: 10.18240/ijo.2016.06.12. eCollection 2016.

AIM: To evaluate the association between the size of peripheral retinal non-perfusion and the number of intravitreal ranibizumab injections in patients with treatment-naive branch retinal vein occlusion (BRVO) and macular edema.METHODS: A total of 53 patients with treatment-naive BRVO...

Delayed Diagnosis of HCC with Chronic Alcoholic Liver Disease.

Liver cancer

Schütte K, Bornschein J, Kahl S, Seidensticker R, Arend J, Ricke J, Malfertheiner P.
PMID: 24159590
Liver Cancer. 2012 Nov;1(3):257-66. doi: 10.1159/000343840.

BACKGROUND: Adherence to surveillance recommendations for patients at risk of developing hepatocellular carcinoma (HCC) is influenced by several factors, including the etiology of chronic liver disease.AIM: The aim of this study was to analyze whether tumor stage at diagnosis...

Big cats in situ.

Science (New York, N.Y.)

Seidensticker J.
PMID: 17830101
Science. 1994 May 13;264(5161):1005-6. doi: 10.1126/science.264.5161.1005.

No abstract available.

Noninvasive diagnosis of hepatocellular carcinoma in cirrhotic liver: current guidelines and future prospects for radiological imaging.

Liver cancer

Ricke J, Seidensticker M, Mohnike K.
PMID: 24159571
Liver Cancer. 2012 Jun;1(1):51-8. doi: 10.1159/000339020.

Noninvasive imaging has become the standard for hepatocellular carcinoma (HCC) diagnosis in cirrhotic patients. Typical imaging features of HCC such as arterial wash-in and venous wash-out deliver very high specificity and acceptable sensitivity even in nodules from 1 to...

Comparison of Regenerative Tissue Quality following Matrix-Associated Cell Implantation Using Amplified Chondrocytes Compared to Synovium-Derived Stem Cells in a Rabbit Model for Cartilage Lesions.

Stem cells international

Schmal H, Kowal JM, Kassem M, Seidenstuecker M, Bernstein A, Böttiger K, Xiong T, Südkamp NP, Kubosch EJ.
PMID: 29765410
Stem Cells Int. 2018 Apr 19;2018:4142031. doi: 10.1155/2018/4142031. eCollection 2018.

Known problems of the autologous chondrocyte implantation motivate the search for cellular alternatives. The aim of the study was to test the potential of synovium-derived stem cells (SMSC) to regenerate cartilage using a matrix-associated implantation. In an osteochondral defect...

The Philae lander mission and science overview.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

Boehnhardt H, Bibring JP, Apathy I, Auster HU, Ercoli Finzi A, Goesmann F, Klingelhöfer G, Knapmeyer M, Kofman W, Krüger H, Mottola S, Schmidt W, Seidensticker K, Spohn T, Wright I.
PMID: 28554970
Philos Trans A Math Phys Eng Sci. 2017 Jul 13;375(2097). doi: 10.1098/rsta.2016.0248.

The Philae lander accomplished the first soft landing and the first scientific experiments of a human-made spacecraft on the surface of a comet. Planned, expected and unexpected activities and events happened during the descent, the touch-downs, the hopping across...

Nanoporous silicon nitride-based membranes of controlled pore size, shape and areal density: Fabrication as well as electrophoretic and molecular filtering characterization.

Beilstein journal of nanotechnology

Seidenstücker A, Beirle S, Enderle F, Ziemann P, Marti O, Plettl A.
PMID: 29977673
Beilstein J Nanotechnol. 2018 May 09;9:1390-1398. doi: 10.3762/bjnano.9.131. eCollection 2018.

A new route will be presented for an all-parallel fabrication of highly flexible, freestanding membranes with well-defined porosity. This fabrication is based on arrays of well-defined Au nanoparticles (NPs) exhibiting a high degree of hexagonal order as obtained in...

Treatment of hepatic pancreatic ductal adenocarcinoma metastases with high-dose-rate image-guided interstitial brachytherapy: a single center experience.

Journal of contemporary brachytherapy

Drewes R, Omari J, Manig M, Seidensticker M, Hass P, Ricke J, Powerski M, Pech M.
PMID: 31523233
J Contemp Brachytherapy. 2019 Aug;11(4):329-336. doi: 10.5114/jcb.2019.87269. Epub 2019 Aug 29.

PURPOSE: To evaluate the efficacy and safety of image-guided (computed tomography/magnetic resonance imaging - CT/MRI) high-dose-rate (HDR) interstitial brachytherapy (iBT) as a salvage maneuver for the treatment of hepatic metastases originating from hepatic pancreatic ductal adenocarcinoma (PDAC). PDAC metastases...

Showing 1 to 12 of 99 entries