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Institution

University of Cologne

EducationCologne, Germany
About: University of Cologne is a education organization based out in Cologne, Germany. It is known for research contribution in the topics: Population & Transplantation. The organization has 32050 authors who have published 66350 publications receiving 2210092 citations. The organization is also known as: Universität zu Köln & Universitatis Coloniensis.


Papers
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Journal ArticleDOI
TL;DR: This review will discuss the contribution of members of each family to potassium acquisition, redistribution and homeostasis in plant potassium transporters.

340 citations

Journal ArticleDOI
TL;DR: Gram-positive pathogens predominated across all ages, and increasing antimicrobial resistance was observed in pediatric patients, and Nosocomial BSI occurred predominantly in very young and/or critically ill children.
Abstract: Background.We identified the predominant pathogens and antimicrobial susceptibilities of nosocomial bloodstream isolates in pediatric patients in the US Prospective surveillance for nosocomial bloodstream infections at 49 hospitals during a 6-year period [Surveillance and Control of Pathogens of Epi

339 citations

Journal ArticleDOI
TL;DR: Patients in whom targeting of the subthalamic nucleus (STN) had been performed using ventriculography, 3D magnetic resonance resonance imaging, and 3D computerized tomography, together with macrostimulation and teleradiographic control of the electrode position were analyzed.
Abstract: Object. The goal of this study was to relate the degree of clinical improvement and that of energy consumption to the anatomical position of electrode poles used for long-term stimulation. Methods. The authors conducted a retrospective analysis of 15 consecutive patients in whom targeting of the subthalamic nucleus (STN) had been performed using ventriculography, three-dimensional (3D) magnetic resonance (MR) imaging, and 3D computerized tomography, together with macrostimulation and teleradiographic control of the electrode position. In these patients the follow-up period ranged from 6 to 12 months. Postoperative improvement in contralateral motor symptoms, which was assessed by assigning a lateralized motor subscore of the Unified Parkinson's Disease Rating Scale (UPDRS), and stimulus intensity required for optimal treatment results were correlated with the intracerebral position of the active electrode pole. Bilateral high-frequency stimulation of the STN improved the UPDRS motor score during the medic...

339 citations

Journal ArticleDOI
TL;DR: A likely better strategy is to exploit the use of radiant solar energy by the photosynthetic electron transport system to enhance the rates of H2 formation and so improve the chances of utilizing cyanobacteria as a source for the generation of clean energy.
Abstract: Summary: This review summarizes recent aspects of (di)nitrogen fixation and (di)hydrogen metabolism, with emphasis on cyanobacteria. These organisms possess several types of the enzyme complexes catalyzing N2 fixation and/or H2 formation or oxidation, namely, two Mo nitrogenases, a V nitrogenase, and two hydrogenases. The two cyanobacterial Ni hydrogenases are differentiated as either uptake or bidirectional hydrogenases. The different forms of both the nitrogenases and hydrogenases are encoded by different sets of genes, and their organization on the chromosome can vary from one cyanobacterium to another. Factors regulating the expression of these genes are emerging from recent studies. New ideas on the potential physiological and ecological roles of nitrogenases and hydrogenases are presented. There is a renewed interest in exploiting cyanobacteria in solar energy conversion programs to generate H2 as a source of combustible energy. To enhance the rates of H2 production, the emphasis perhaps needs not to be on more efficient hydrogenases and nitrogenases or on the transfer of foreign enzymes into cyanobacteria. A likely better strategy is to exploit the use of radiant solar energy by the photosynthetic electron transport system to enhance the rates of H2 formation and so improve the chances of utilizing cyanobacteria as a source for the generation of clean energy.

339 citations

Journal ArticleDOI
15 Feb 1997-Blood
TL;DR: It is proposed that the human lymphoid system contains a large compartment of IgM-expressing memory cells, which seem to represent the nonmalignant counterparts of Igm- expressing tumor cells in sporadic Burkitt's lymphoma, MALT lymphomas, monocytoid B-cell lymphoma), and diffuse large- cell lymphoma that were found to harbor somatically mutated V genes.

339 citations


Authors

Showing all 32558 results

NameH-indexPapersCitations
Julie E. Buring186950132967
Stuart H. Orkin186715112182
Cornelia M. van Duijn1831030146009
Dorret I. Boomsma1761507136353
Frederick W. Alt17157795573
Donald E. Ingber164610100682
Klaus Müllen1642125140748
Klaus Rajewsky15450488793
Frederik Barkhof1541449104982
Stefanie Dimmeler14757481658
Detlef Weigel14251684670
Hidde L. Ploegh13567467437
Luca Valenziano13043794728
Peter Walter12684171580
Peter G. Martin12555397257
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023324
2022634
20214,225
20204,051
20193,526
20183,078