TY - JOUR A1 - Alt, Helmut T1 - Belieferung von Kunden in fremden Netzgebieten JF - EW : das Magazin für die Energie-Wirtschaft Y1 - 2002 SN - 0013-5496 N1 - Printausg. in der Bibliothek vorhanden: 23 Z 585 VL - Bd. 101 IS - H. 1/2 SP - 26 EP - 35 ER - TY - JOUR A1 - Alt, Helmut T1 - Wunschphantasie eines eingefleischten Kernenergiegegners : zur Rede von Bundesumweltminister Jürgen Trittin auf dem VDEW-Kongress 2005 "Die Energieversorgung der Zukunft" JF - EW : das Magazin für die Energie-Wirtschaft Y1 - 2005 SN - 0013-5496 N1 - Printausg. in der Bibliothek vorhanden: 23 Z 585 VL - Bd. 104 IS - H. 17/18 SP - 7 ER - TY - JOUR A1 - Alt, Helmut T1 - Versorgungssicherheit und Windenergie : Tatsachen und Fakten statt Mythen und Mysterien JF - EW : das Magazin für die Energie-Wirtschaft Y1 - 2005 SN - 0013-5496 N1 - Printaus. in der Bibliothek vorhanden: 23 Z 585 VL - Bd. 104 IS - H. 25 SP - 42 EP - 45 ER - TY - JOUR A1 - Alt, Helmut T1 - Die Sonne bestimmt zunehmend die Spannung in der Steckdose : Lastflussberechnung einer Photovoltaikeinspeisung JF - EW : das Magazin für die Energie-Wirtschaft Y1 - 2011 SN - 0013-5496 N1 - Printausg. in der Bibliothek vorhanden: 23 Z 585 VL - Bd. 110 IS - H. 17/18 SP - 24 EP - 29 PB - VWEW-Energieverlag CY - Frankfurt, M. ER - TY - JOUR A1 - Alt, Helmut T1 - Entwicklungstendenzen der Sicherheit und der notwendigen Reserveleistung beim Verbundbetrieb der Kraftwerke JF - Elektrizitätswirtschaft Y1 - 1970 SN - 0013-5496 VL - 69 IS - 25 SP - 672 EP - 678 PB - VWEW-Energieverlag CY - Frankfurt/Main ER - TY - JOUR A1 - Alt, Helmut T1 - Digitale Berechnung der Betriebsdiagramme von Hochspannungsleitungen JF - Elektrizitätswirtschaft Y1 - 1972 SN - 0013-5496 VL - 71 IS - 4 SP - 87 EP - 92 PB - VWEW-Energieverlag CY - Frankfurt/Main ER - TY - JOUR A1 - Alt, Helmut T1 - Auswertung von Prüfungsergebnissen auf elektronischen Rechenanlagen JF - Angewandte Informatik Y1 - 1974 SN - 0013-5704 VL - 16 IS - 5 SP - 219 EP - 222 PB - Vieweg CY - Braunschweig ER - TY - JOUR A1 - Alt, Helmut T1 - Tabellenfreie Berechnung der Einkommensteuer mit Hilfe des programmierbaren Taschenrechners JF - Elektrizitätswirtschaft Y1 - 1978 SN - 0013-5496 VL - 77 SP - 486 EP - 489 PB - VWEW-Energieverlag CY - Frankfurt/Main ER - TY - JOUR A1 - Alt, Helmut T1 - Wirtschaftlichkeit von Investitionen JF - Elektrizitätswirtschaft Y1 - 1978 SN - 0013-5496 VL - 77 IS - 3 SP - 73 EP - 76 PB - VWEW-Energieverlag CY - Frankfurt/Main ER - TY - JOUR A1 - Alt, Helmut T1 - Isolierte Freileitungen, ein Betriebsmittel für schwierige Trassenführung JF - Elektrizitätswirtschaft Y1 - 1979 SN - 0013-5496 VL - Jg. 78 IS - H. 10 SP - 250 EP - 256 ER - TY - JOUR A1 - Alt, Helmut T1 - Kurzschlußstromberechnung JF - Elektrizitätswirtschaft Y1 - 1980 SN - 0013-5496 VL - Jg. 79 IS - H. 10 SP - 379 EP - 382 ER - TY - JOUR A1 - Alt, Helmut T1 - Wirtschaftlichkeitsberechnung von Investitionen mit dem programmierbaren Taschenrechner JF - 3 R international : RRR ; Rohre, Rohrleitungsbau, Rohrleitungstransport Y1 - 1981 SN - 0340-3386 VL - Jg. 20 IS - H. 10 SP - 561 EP - 565 ER - TY - JOUR A1 - Alt, Helmut T1 - Statische oder dynamische Wirtschaftlichkeitsberechnung bei Investitionen zur Energieeinsparung JF - Elektrowärme international Edition B: Industrielle Elektrowärme : IEW = Industrial applications of electro-heat : EWI ; Zeitschrift für das gesamte Gebiet der Elektrowärme in Industrie, Gewerbe und Haushalt Y1 - 1982 SN - 0340-3521 VL - Jg. 40 IS - H. 3/4 SP - 166 EP - 172 ER - TY - JOUR A1 - Alt, Helmut T1 - Einsatz programmierbarer Rechner im Sondervertragskundenbereich der Gasversorgung JF - Das Gas- und Wasserfach : Ausgabe Gas, Erdgas : GWF Y1 - 1983 SN - 0016-4909 VL - Bd. 124 IS - H. 9 SP - 468 EP - 471 ER - TY - JOUR A1 - Alt, Helmut T1 - Intervallschalter mit getrennt einstellbarer Pulszeit und Pulszahl JF - Elektronik : Fachmedium für industrielle Anwender und Entwickler Y1 - 1978 SN - 0013-5658 VL - 27 IS - H. 14 SP - 76 PB - WEKA Fachmedien CY - Haar ER - TY - JOUR A1 - Alt, Helmut T1 - Auswertung von Belastungskennlinien JF - Elektrizitätswirtschaft Y1 - 1983 SN - 0013-5496 VL - Bd. 82 SP - 208 EP - 210 ER - TY - JOUR A1 - Alt, Helmut T1 - Vorteilsausgleich durch Versorgungsunternehmen für Ersatzleistungen Dritter JF - Elektrizitätswirtschaft Y1 - 1985 SN - 0013-5496 VL - Jg. 104 SP - 440 EP - 443 ER - TY - JOUR A1 - Alt, Helmut T1 - Multiplikativ oder additiv? Diskussionsbeitrag zu Preisanpassungsklauseln in der Gaswirtschaft JF - Energiewirtschaftliche Tagesfragen : et ; Zeitschrift für Energiewirtschaft, Recht, Technik und Umwelt Y1 - 1985 SN - 0013-743X VL - Jg. 35 SP - 609 EP - 611 ER - TY - JOUR A1 - Alt, Helmut T1 - Steuersenkungsgesetz-Auswirkungen und Berechnung JF - Elektrizitätswirtschaft Y1 - 1986 SN - 0013-5496 VL - Jg. 85 SP - 238 EP - 242 ER - TY - JOUR A1 - Alt, Helmut T1 - Dialoggesteuerte harmonische Analyse mit dem HP 41 JF - Elektrizitätswirtschaft Y1 - 1986 SN - 0013-5496 VL - Bd. 85 IS - H. 4 SP - 139 EP - 142 ER - TY - JOUR A1 - Alt, Helmut T1 - Dialoggesteuerte harmonische Analyse mit dem HP 41 JF - Elektrowärme international Edition B : Industrielle Elektrowärme : IEW = Industrial applications of electro-heat : EWI ; Zeitschr. für das gesamte Gebiet der Elektrowärme in Industrie, Gewerbe und Haushalt Y1 - 1986 SN - 0340-3521 VL - Jg. 44 IS - H. 6 SP - 283 EP - 287 ER - TY - JOUR A1 - Alt, Helmut T1 - Dialoggesteuerte Spannungs- und Belastungsberechnung im Netz eines Elektrizitätsversorgungsunternehmens JF - Elektrizitätswirtschaft Y1 - 1986 SN - 0013-5496 VL - Bd. 85 IS - H. 23 SP - 906 EP - 910 ER - TY - JOUR A1 - Alt, Helmut T1 - Effektivzinsberechnung bei industriellen oder gewerblichen Tilgungsdarlehen JF - Elektrizitätswirtschaft Y1 - 1987 SN - 0013-5496 VL - Bd. 86 SP - 592 EP - 595 ER - TY - JOUR A1 - Alt, Helmut T1 - Steuerreformgesetz 1990 JF - Elektrizitätswirtschaft Y1 - 1989 SN - 0013-5496 VL - Bd. 88 IS - H. 1/2 SP - 78 EP - 83 ER - TY - JOUR A1 - Alt, Helmut T1 - Steuersenkungs-Erweiterungsgesetz 1988 zur Gesamtentlastung der Einkommensteuer JF - Betriebs-Berater : BB ; Zeitschrift für Recht und Wirtschaft Y1 - 1987 SN - 0340-7918 VL - Vol. 42 IS - H. 32 SP - 2207 EP - 2208 ER - TY - JOUR A1 - Alt, Helmut T1 - Steuerreformgesetz 1990 JF - Elektrizitätswirtschaft Y1 - 1989 SN - 0947-0581 (E-Journal); 0340-7918 (Print) VL - Jg. 88 IS - H. 2 SP - 120 EP - 121 ER - TY - JOUR A1 - Alt, Helmut T1 - Energietarifstruktur in Ostdeutschland JF - Energiewirtschaftliche Tagesfragen : et ; Zeitschrift für Energiewirtschaft, Recht, Technik und Umwelt Y1 - 1990 SN - 0013-743X VL - Bd. 40 IS - H. 11 SP - 782 EP - 788 ER - TY - JOUR A1 - Alt, Helmut T1 - Effektivzins und APR JF - Die Bank : Zeitschrift für Bankpolitik und Bankpraxis Y1 - 1991 SN - 0342-3182 N1 - Printausg. in der Bibliothek vorhanden: 43 Z 227 VL - Jg. 31 IS - H. 4 SP - 230 EP - 231 ER - TY - JOUR A1 - Alt, Helmut T1 - Möglichkeiten der CO2-Minderung "alternativ" betrachtet JF - Etz : Elektrotechnik & Automation Y1 - 1992 SN - 0170-1711 VL - Bd. 113 IS - H. 6-7 SP - 400 ER - TY - JOUR A1 - Alt, Helmut T1 - Netzimpedanz- und Oberschwingungsberechnung in Netzen der öffentlichen Stromversorgung JF - Elektrizitätswirtschaft Y1 - 1995 SN - 0013-5496 VL - Bd. 94 IS - H. 4 SP - 166 EP - 174 ER - TY - JOUR A1 - Wang, Ren-Qi A1 - Druckenmüller, Katharina A1 - Elbers, Gereon A1 - Guenther, Klaus A1 - Croué, Jean-Philippe T1 - Analysis of aquatic-phase natural organic matter by optimized LDI-MS method JF - Journal of mass spectrometry N2 - The composition and physiochemical properties of aquatic-phase natural organic matter (NOM) are most important problems for both environmental studies and water industry. Laser desorption/ionization (LDI) mass spectrometry facilitated successful examinations of NOM, as humic and fulvic acids in NOM are readily ionized by the nitrogen laser. In this study, hydrophobic NOMs (HPO NOMs) from river, reservoir and waste water were characterized by this technique. The effect of analytical variables like concentration, solvent composition and laser energy was investigated. The exact masses of small molecular NOM moieties in the range of 200–1200 m/z were determined in reflectron mode. In addition, spectra of post-source-decay experiments in this range showed that some compounds from different natural NOMs had the same fragmental ions. In the large mass range of 1200–15 000 Da, macromolecules and their aggregates were found in HPO NOMs from natural waters. Highly humic HPO exhibited mass peaks larger than 8000 Da. On the other hand, the waste water and reservoir water mainly had relatively smaller molecules of about 2000 Da. The LDI-MS measurements indicated that highly humic river waters were able to form large aggregates and membrane foulants, while the HPO NOMs from waste water and reservoir water were unlikely to form large aggregates. Copyright © 2014 John Wiley & Sons, Ltd. Y1 - 2014 U6 - https://doi.org/10.1002/jms.3321 SN - 1096-9888 VL - 49 IS - 2 SP - 154 EP - 160 PB - Wiley CY - Bognor Regis ER - TY - JOUR A1 - Sawada, Kazuaki A1 - Nakazawa, Hirokazu A1 - Takenaga, Shoko A1 - Hizawa, Takeshi A1 - Futagawa, Masato A1 - Dasai, Fumihiro A1 - Sakurai, Takashi A1 - Okumura, Koichi A1 - Hattori, Toshiaki A1 - Ishida, Makoto T1 - Multimodal bioimage sensor JF - IEICE transactions on fundamentals of electronics, communidations and computer sciences N2 - To visualize the biochemical distribution two-dimensionally, we invented a solid-state-type ion image sensor that indicates the chemical activity of solutions and cells. The device, which consists of a CCD array covered with a functionalized membrane to detect charge accumulation, is highly sensitive to changes in the concentration and two-dimensional distribution of ions and biomaterials. Y1 - 2014 U6 - https://doi.org/10.1587/transfun.E97.A.726 SN - 0916-8508 (Print) ; 1745-1337 (Online) VL - E97-A (2014) IS - 3 SP - 726 EP - 733 PB - IEICE CY - Tokyo ER - TY - JOUR A1 - Heine, A. A1 - Herrmann, G. A1 - Selmer, Thorsten A1 - Terwesten, F. A1 - Buckel, W. A1 - Reuter, K. T1 - High resolution crystal structure of clostridium propionicum β-Alanyl-CoA:Ammonia Lyase, a new member of the "Hot Dog Fold" protein superfamily JF - Proteins N2 - Clostridium propionicum is the only organism known to ferment β-alanine, a constituent of coenzyme A (CoA) and the phosphopantetheinyl prosthetic group of holo-acyl carrier protein. The first step in the fermentation is a CoA-transfer to β-alanine. Subsequently, the resulting β-alanyl-CoA is deaminated by the enzyme β-alanyl-CoA:ammonia lyase (Acl) to reversibly form ammonia and acrylyl-CoA. We have determined the crystal structure of Acl in its apo-form at a resolution of 0.97 Å as well as in complex with CoA at a resolution of 1.59 Å. The structures reveal that the enyzme belongs to a superfamily of proteins exhibiting a so called “hot dog fold” which is characterized by a five-stranded antiparallel β-sheet with a long α-helix packed against it. The functional unit of all “hot dog fold” proteins is a homodimer containing two equivalent substrate binding sites which are established by the dimer interface. In the case of Acl, three functional dimers combine to a homohexamer strongly resembling the homohexamer formed by YciA-like acyl-CoA thioesterases. Here, we propose an enzymatic mechanism based on the crystal structure of the Acl·CoA complex and molecular docking. Proteins 2014; 82:2041–2053. © 2014 Wiley Periodicals, Inc. Y1 - 2014 U6 - https://doi.org/10.1002/prot.24557 SN - 1097-0134 (E-Journal); 0887-3585 (Print) VL - 82 IS - 9 SP - 2041 EP - 2053 PB - Wiley-Liss CY - New York ER - TY - JOUR A1 - Starke, Günther A1 - Ahlbehrendt, Norbert A1 - Bischoff, Rainer A1 - Melzer, Harald A1 - Sieber, Sven A1 - Senk, Burkhard A1 - Kramarczyk, Peter T1 - RoboTOOL. Technologien für den ortsflexiblen Einsatz von Robotern bei temporären Arbeitsaufgaben in der Fertigung JF - wt Werkstattstechnik online Y1 - 2009 SN - 1436-4980 VL - Bd. 99 IS - H. 9 SP - 661 EP - 670 ER - TY - JOUR A1 - Takenaga, Shoko A1 - Biselli, Manfred A1 - Schnitzler, Thomas A1 - Öhlschläger, Peter A1 - Wagner, Torsten A1 - Schöning, Michael Josef T1 - Toward multi-analyte bioarray sensors: LAPS-based on-chip determination of a Michaelis–Menten-like kinetics for cell culturing JF - Physica status solidi A : Applications and materials science N2 - The metabolic activity of Chinese hamster ovary (CHO) cells was observed using a light-addressable potentiometric sensor (LAPS). The dependency toward different glucose concentrations (17–200 mM) follows a Michaelis–Menten kinetics trajectory with Kₘ = 32.8 mM, and the obtained Kₘ value in this experiment was compared with that found in literature. In addition, the pH shift induced by glucose metabolism of tumor cells transfected with the HPV-16 genome (C3 cells) was successfully observed. These results indicate the possibility to determine the tumor cells metabolism with a LAPS-based measurement device. Y1 - 2014 U6 - https://doi.org/10.1002/pssa.201330464 SN - 1521-396X (E); 1862-6319 (E-Journal); 0031-8965 (Print); 1862-6300 (Print) VL - 211 IS - 6 SP - 1410 EP - 1415 PB - Wiley-VCH CY - Weinheim ER - TY - JOUR A1 - Funke, Harald A1 - Dickhoff, J. A1 - Keinz, Jan A1 - Anis, H. A. A1 - Parente, A. A1 - Hendrick, P. T1 - Experimental and numerical study of the micromix combustion principle applied for hydrogen and hydrogen-rich syngas as fuel with increased energy density for industrial gas turbine applications JF - Energy procedia N2 - The Dry Low NOx (DLN) Micromix combustion principle with increased energy density is adapted for the industrial gas turbine APU GTCP 36-300 using hydrogen and hydrogen-rich syngas with a composition of 90%-Vol. hydrogen (H₂) and 10%-Vol. carbon-monoxide (CO). Experimental and numerical studies of several combustor geometries for hydrogen and syngas show the successful advance of the DLN Micromix combustion from pure hydrogen to hydrogen-rich syngas. The impact of the different fuel properties on the combustion principle and aerodynamic flame stabilization design laws, flow field, flame structure and emission characteristics is investigated by numerical analysis using a hybrid Eddy Break Up combustion model and validated against experimental results. Y1 - 2014 U6 - https://doi.org/10.1016/j.egypro.2014.12.201 SN - 1876-6102 (E-Journal) IS - 61 SP - 1736 EP - 1739 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Oberländer, Jan A1 - Kirchner, Patrick A1 - Boyen, Hans-Gerd A1 - Schöning, Michael Josef T1 - Detection of hydrogen peroxide vapor by use of manganese(IV) oxide as catalyst for calorimetric gas sensors JF - Physica status solidi A: Applications and materials science N2 - In this work, the catalyst manganese(IV) oxide (MnO2), of calorimetric gas sensors (to monitor the sterilization agent vaporized hydrogen peroxide) has been investigated in more detail. Chemical analyses by means of X-ray-induced photoelectron spectroscopy have been performed to unravel the surface chemistry prior and after exposure to hydrogen peroxide vapor at elevated temperature, as applied in the sterilization processes of beverage cartons. The surface characterization reveals a change in oxidation states of the metal oxide catalyst after exposure to hydrogen peroxide. Additionally, a cleaning effect of the catalyst, which itself is attached to the sensor surface by means of a polymer interlayer, could be observed. Y1 - 2014 U6 - https://doi.org/10.1002/pssa.201330359 SN - 1521-396X (E-Journal); 1862-6319 (E-Journal); 0031-8965 (Print); 1862-6300 (Print) VL - 211 IS - 6 SP - 1372 EP - 1376 PB - Wiley-VCH CY - Weinheim ER - TY - JOUR A1 - Frings, Michael T1 - Das Gesetz gegen unseriöse Geschäftspraktiken JF - NWB : NWB Steuer- und Wirtschaftsrecht Y1 - 2014 SN - 0028-3460 (Print) IS - 11 SP - 769 EP - 775 PB - NWB-Verlag CY - Herne ER - TY - JOUR A1 - Frings, Michael T1 - Neuregelung des Verbraucherschutzes – Umsetzung der EU-Verbraucherrechterichtlinie JF - NWB : NWB Steuer- und Wirtschaftsrecht Y1 - 2014 SN - 0028-3460 (Print) IS - 14 SP - 1003 EP - 1018 PB - NWB-Verlag CY - Herne ER - TY - JOUR A1 - Fuest, Matthias A1 - Kotliar, Konstantin A1 - Walter, Peter A1 - Plange, Niklas T1 - Monitoring intraocular pressure changes after intravitreal Ranibizumab injection using rebound tonometry JF - Ophthalmic and physiological optics Y1 - 2014 U6 - https://doi.org/10.1111/opo.12134 SN - 1475-1313 (E-Journal); 0275-5408 (Print) N1 - Special Issue: The Ageing Visual System VL - 34 IS - 4 SP - 438 EP - 444 PB - Wiley-Blackwell CY - Oxford ER - TY - JOUR A1 - Guo, Yuanyuan A1 - Miyamoto, Ko-ichiro A1 - Wagner, Torsten A1 - Schöning, Michael Josef A1 - Yoshinobu, Tatsuo T1 - Theoretical study and simulation of light-addressable potentiometric sensors JF - Physica status solidi (A) : applications and materials N2 - The light-addressable potentiometric sensor (LAPS) is a semiconductor-based potentiometric sensor using a light probe with an ability of detecting the concentration of biochemical species in a spatially resolved manner. As an important biomedical sensor, research has been conducted to improve its performance, for instance, to realize high-speed measurement. In this work, the idea of facilitating the device-level simulation, instead of using an equivalent-circuit model, is presented for detailed analysis and optimization of the performance of the LAPS. Both carrier distribution and photocurrent response have been simulated to provide new insight into both amplitude-mode and phase-mode operations of the LAPS. Various device parameters can be examined to effectively design and optimize the LAPS structures and setups for enhanced performance. Y1 - 2014 U6 - https://doi.org/10.1002/pssa.201330354 SN - 0031-8965 VL - 211 IS - 6 SP - 1467 EP - 1472 PB - Wiley-VCH CY - Weinheim ER - TY - JOUR A1 - Teschers, Reimar A1 - Markhöfer, Jörg A1 - Mandelartz, Johannes T1 - Aluminiumrückführung aus dem Automobilbereich JF - Erzmetall : Rohstoffgewinnung, Verarbeitung, Recycling, Umwelttechnik Y1 - 1999 SN - 0044-2658 VL - Bd. 52 IS - Nr. 10 SP - 533 EP - 540 ER - TY - JOUR A1 - Mandelartz, Johannes A1 - Teschers, Reimar A1 - Schumacher, Thomas T1 - Aluminium-Einsatz im Verkehrsbau JF - Erzmetall : Rohstoffgewinnung, Verarbeitung, Recycling, Umwelttechnik Y1 - 1999 SN - 0044-2658 VL - Bd. 52 IS - Nr. 7-8 SP - 411 EP - 418 ER - TY - JOUR A1 - Smith, Walker O. A1 - Baumann, Marcus A1 - Wilson, David L. A1 - Aletsee, Ludwig T1 - Phytoplankton biomass and productivity in the marginal ice zone of the Fram Strait during summer 1984 JF - Journal of geophysical research Y1 - 1987 SN - 2156-2202 (E-Journal); 2169-9291 (E-Journal); 0148-0227 (Print); 2169-9275 (Print) VL - Vol. 92 IS - Iss. C7 SP - 6777 EP - 6786 ER - TY - JOUR A1 - Jahnke, J. A1 - Baumann, Marcus T1 - Differentiation between Phaeocystis pouchetii (Har.) Lagerheim and Phaeocystis globosa Scherffel JF - Hydrobiological bulletin Y1 - 1987 SN - 0165-1404 (Print); 1573-5125 (E-Journal) VL - Vol. 21 IS - Iss. 2 SP - 141 EP - 147 ER - TY - JOUR A1 - Aletsee, Ludwig A1 - Baumann, Marcus T1 - A laboratory incubator equipped with facilities to automatically simulate natural irradiance JF - Boletim do Instituto Oceanográfico / Universidade de São Paulo Y1 - 1991 SN - 1982-436X; 0080-6331 VL - Vol. 39 IS - No. 2 SP - 155 EP - 159 ER - TY - JOUR A1 - Tüg, Helmut A1 - Baumann, Marcus T1 - Problems of UV-B radiation measurements in biological research : critical remarks on current techniques and suggestions for improvements JF - Geophysical research letters Y1 - 1994 SN - 1944-8007 (E-Journal); 0094-8276 (Print) VL - Vol. 21 IS - Iss. 8 SP - 689 EP - 692 ER - TY - JOUR A1 - Medlin, L. K. A1 - Lange, M. A1 - Baumann, Marcus T1 - Genetic differentiation among three colony-forming species of Phaeocystis : further evidence for the phylogeny of the Prymnesiophyta JF - Phycologia Y1 - 1994 SN - 0031-8884 VL - Vol. 33 IS - Iss. 3 SP - 199 EP - 212 ER - TY - JOUR A1 - Tüg, Helmut A1 - Baumann, Marcus T1 - Reply to the comments by R.L. McKenzie and P.V. Johnston on our paper “Problems of UV-B radiation measurements in biological research: Critical Remarks on current techniques and suggestions for improvements” JF - Geophysical research letters Y1 - 1995 SN - 1944-8007 (E-Journal); 0094-8276 (Print) VL - Vol. 22 IS - Iss. 9 SP - 1159 EP - 1160 ER - TY - JOUR A1 - Baumann, Marcus T1 - Algenblüten & Treibhauseffekt : Wechselwirkungen mit anthropogenen Aktivitäten JF - Wechselwirkung : Wissenschaft & vernetztes Denken Y1 - 1996 SN - 0172-1623 VL - 18 IS - 81 SP - 6 EP - 11 ER -