Search Results - "Keller, Martina"

Saccharin and Other Artificial Sweeteners in Soils: Estimated Inputs from Agriculture and Households, Degradation, and Leaching to Groundwater by Buerge, Ignaz J, Keller, Martina, Buser, Hans-Rudolf, Müller, Markus D, Poiger, Thomas

“…Artificial sweeteners are consumed in substantial quantities as sugar substitutes and were previously shown to be ubiquitously present in the aquatic…”
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Detection of koala retrovirus subgroup B (KoRV-B) in animals housed at European zoos by Fiebig, Uwe, Keller, Martina, Denner, Joachim

“…Many koalas carry an endogenous retrovirus, KoRV-A, in their genome. Recently, a second retrovirus, KoRV-B, was detected in koalas in Japanese and U.S. zoos…”
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Behavior of Glyphosate in Wastewater Treatment Plants by Poiger, Thomas, Keller, Martina, Buerge, Ignaz J, Balmer, Marianne E

“…The herbicide glyphosate is frequently detected in surface waters and its occurrence is linked to agricultural as well as urban uses. Elevated concentrations…”
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Efficacy of natural fatty acid based herbicides on mixed weed stands by Ivanna Crmaric, Martina Keller, Jürgen Krauss, Nicolas Delabays

“…In the search for alternatives to synthetic herbicides we assessed the efficacy of 2 non-selective, natural products. The active substances were fatty acids:…”
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Phosphorus forms and enzymatic hydrolyzability of organic phosphorus in soils after 30 years of organic and conventional farming by Keller, Martina, Oberson, Astrid, Annaheim, Kathrin E., Tamburini, Federica, Mäder, Paul, Mayer, Jochen, Frossard, Emmanuel, Bünemann, Else K.

“…Lower P‐input levels in organic than conventional farming can decrease soil total and available P, which can potentially be resupplied from soil organic P. We…”
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Yield losses in vegetable and arable crops caused by yellow nutsedge (Cyperus esculentus) in farmers fields in Switzerland by René Total, Lutz Collet, Jonathan Heyer, Martina Keller

“…Cyperus esculentus has become a serious weed in Switzerland. Despite intensive awareness training unaffected farmers tend to underestimate the consequences of…”
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Development and testing of a decision making based method to adjust automatically the harrowing intensity by Rueda-Ayala, Victor, Weis, Martin, Keller, Martina, Andújar, Dionisio, Gerhards, Roland

“…Harrowing is often used to reduce weed competition, generally using a constant intensity across a whole field. The efficacy of weed harrowing in wheat and…”
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Validation of yellow nutsedge (Cyperus esculentus) control strategies in maize in an on-farm, large-scale field trial by Martina Keller, René Total, Jürgen Krauss, Reto Neuweiler

“…A large on-farm field trial was carried out between 2013 and 2015 to investigate the effect of repetitive maize cropping on Cyperus esculentus infestation over…”
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Seasonality of energetic functioning and production of reactive oxygen species by lugworm (Arenicola marina) mitochondria exposed to acute temperature changes by Keller, Martina, Sommer, Angela Maria, Pörtner, Hans O, Abele, Doris

“…The influence of seasonal and acute temperature changes on mitochondrial functions were studied in isolated mitochondria of the eurythermal lugworm Arenicola…”
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Unspecific Abdominal Symptoms and Pneumobilia: A Rare Case of Gastrointestinal Obstruction by Keller, Martina, Epp, Carola, Meyenberger, Christa, Sulz, Michael Christian

“…The case of a 77-year-old woman with symptoms of gastric outlet obstruction is presented. Transabdominal ultrasonography findings were suspicious of Bouveret's…”
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Thrombin Inhibitors Identified by Computer-Assisted Multiparameter Design by Riester, Daniel, Wirsching, Frank, Salinas, Gabriela, Keller, Martina, Gebinoga, Michael, Kamphausen, Stefan, Merkwirth, Christian, Goetz, Ruediger, Wiesenfeldt, Martin, Stürzebecher, Jörg, Bode, Wolfram, Friedrich, Rainer, Thürk, Marcel, Schwienhorst, Andreas, Eigen, Manfred

“…Here, we present a series of thrombin inhibitors that were generated by using powerful computer-assisted multiparameter optimization process. The process was…”
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A new Western blot assay for the detection of porcine cytomegalovirus (PCMV) by Plotzki, Elena, Keller, Martina, Ivanusic, Daniel, Denner, Joachim

“…Porcine cytomegalovirus (PCMV) may be harmful for human recipients if xenotransplantation using pig cell, tissue or organ will be performed transmitting the…”
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Utilisation of old, extensive pig breeds for yellow nutsedge (Cyperus esculentus) control - A non-chemical and appealing approach by Total, René, Schmid, Martina, Keller, Martina

“…Yellow nutsedge (Cyperus esculentus) is a troublesome weed in Switzerland. It reproduces mainly by tubers, but also by seeds. Dormant tubers in the soil cannot…”
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Immunological methods for the detection of porcine lymphotropic herpesviruses (PLHV) by Plotzki, Elena, Keller, Martina, Ehlers, Bernhard, Denner, Joachim

“…•Development of an ELISA and a new Western blot assay to test PHLV.•Testing of different pigs, some of them were antibody positive.•No anti-PLHV antibodies…”
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Pelargonic acid for weed control in onions: factors affecting selectivity by Krauss, Jürgen, Eigenmann, Marco, Keller, Martina

“…In onions (Allium cepa) few herbicides are registered. Due to their erect leaf and plant structure, onions retain less herbicide after spraying than…”
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Lack of antiviral antibody response in koalas infected with koala retroviruses (KoRV) by Fiebig, Uwe, Keller, Martina, Möller, Annekatrin, Timms, Peter, Denner, Joachim

“…•Koalas from zoos as well as from Australia had no antibodies against the KoRV-A.•The tolerance against KoRV-A has implications for future vaccination…”
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Lack of antibody response in pigs immunized with the transmembrane envelope protein of porcine endogenous retroviruses by Keller, Martina, Petersen, Björn, Niemann, Heiner, Denner, Joachim

“…Recently, we immunized different mammalian species (goats, mice, rats, rabbits, guinea pigs and hamsters) with the recombinant ectodomain of the transmembrane…”
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Estimating economic thresholds for site-specific weed control using manual weed counts and sensor technology: An example based on three winter wheat trials by Keller, Martina, Gutjahr, Christoph, Möhring, Jens, Weis, Martin, Sökefeld, Markus, Gerhards, Roland

“…BACKGROUND Precision experimental design uses the natural heterogeneity of agricultural fields and combines sensor technology with linear mixed models to…”
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Environmental Behavior of the Chiral Herbicide Haloxyfop. 2. Unchanged Enantiomer Composition in Blackgrass (Alopecurus myosuroides) and Garden Cress (Lepidium sativum) by Buerge, Ignaz J, Bächli, Astrid, Heller, Werner E, Keller, Martina, Poiger, Thomas

“…Haloxyfop-methyl is a chiral herbicide against grasses in dicotyledonous crops. In plants and soil, haloxyfop-methyl is rapidly hydrolyzed to haloxyfop-acid,…”
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Integrating Economics in the Critical Period for Weed Control Concept in Corn by Keller, Martina, Gantoli, Geoffroy, Möhring, Jens, Gutjahr, Christoph, Gerhards, Roland, Rueda-Ayala, Victor

“…The effect of weed interference on corn yield and the critical period for weed control (CPWC) were determined in Germany and Benin. Treatments with weed…”
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