Brigitte Petersen

University of Bonn | Uni Bonn · Institute for Animal Sciences (ITW)

Tierwohl zählt heute zu den wichtigsten extrinsischen Qualitätsmerkmalen bei der Vermarktung von Fleisch, Milch und Eiern. In der Umsetzung von Tierwohlmaßnahmen müssen alle Akteure der Wertschöpfungsketten dieser Produkte – vom Zulieferer bis zum Lebensmitteleinzelhandel – Verantwortung tragen. Es wird gezeigt, welche Handlungsfelder derzeit in Ve...

The European X-ray Free Electron Laser (XFEL) is in operation at DESY. The superconducting XFEL linac will produce pulsed electron beam at an energy of 17.5 GeV. The linac consists of 768 superconducting niobium 1.3 GHz nine cell cavities and 96 superconducting magnet packages assembled in 96 cryomodules. Each cryomodule is 12 m long and includes a...

The RF operation of the about 800 superconducting 1.3 GHz 9-cell cavities of the XFEL linac requires helium II bath cooling at 2 K, corresponding to a vapor pressure of 3100 Pa. After the first cool-down of the XFEL linac to 4 K in December, 27th 2016 the operation of the 2 K cryogenic system was started in January, 2nd 2017. The 2 K cryogenic syst...

Beam commissioning of the European X-ray Free Electron Laser (European XFEL project) is ongoing. Commissioning the XFEL cryogenic system has started by cooling down the XFEL injector section in December 2015. The stationary operation was continued until August 2016. After intermediate warming up of the complete XFEL cryogenic system, the commission...

Livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) are common colonizers of the anterior nares of healthy pigs and pig-workers (farmers, veterinarians or researchers). This potential of zoonotic spread constitutes a serious health risk for both – humans and animals. Researchers working in pig stables were continuously monito...

All-in-all-out production systems are well established for pig fatting, but without proper cleaning and disinfection, carryover of microorganisms cannot be avoided. Thus, advantages of an all-in-all-out system are made void and diseases can be easily transmitted to new arriving pigs. To our knowledge, reliable methods for determination of the clean...

The measurement of coolant flow is important operational parameter for reliable operation of cryogenic system with superconducting magnets or cavities as well as for the system diagnostics in case of non-steady-state operation, e.g. during cool-down/warm-up or other transients. Proper flowmeter is chosen according to the different parameters, e.g....

In order to produce short pulsed electron beam of 17.5 GeV energy, the XFEL linear accelerator is being built at DESY in Hamburg. Before being installed in the accelerator tunnel, 103 accelerator modules have to be tested in Accelerator Module Test Facility (AMTF). Cavities and cryomodules are tested at two vertical cryostats and three horizontal t...

In the sense of "One Health" the risk of transmission of multiresistant bacteria to humans and animals within and along the pig production chain was addressed by an interdisciplinary team. The research included two studies including samples of humans (93), pigs (589) and the stable environment (643) which were screened for livestock-associated meth...

The Hadron-Electron-Ring-Accelerator (HERA) at the German Electron Synchrotron (DESY) in Hamburg, Germany, was in operation between 1990 and 2007. The required cooling capacity for the superconducting magnets was provided by a cryogenic system consisting of three identical helium refrigeration plants. Due to the implementation of the X-ray free ele...

In order to produce pulsed electron beam with the energy of 17.5 GeV, the XFEL linear accelerator is under construction. After the assembly but before being installed in the accelerator tunnel, 100 accelerator modules have to be tested in Accelerator Module Test Facility (AMTF). Two vertical cryostats and three horizontal test benches are devoted t...

The European XFEL project is under construction at DESY in Germany. The superconducting XFEL linac is supplied by the XFEL helium refrigerator plant. This plant consists of two existing refrigerators, which were in service for the HERA storage ring until 2007. Since the XFEL linear accelerator requires cryogenic cooling at 2K, the existing cryogeni...

A superconducting linac will provide electron bunches of 17.5 GeV beam energy for the operation of the European X-ray Free Electron Laser (XFEL) at DESY. 800 superconducting niobium 1.3 GHz nine cell cavities and 100 superconducting magnet packages will be cooled in a liquid helium II cooling bath at 2.0K temperature. Liquid helium II bath cooling...

In order to validate the cavity package concept before the module assembly, one 3.9 GHz cavity, complete with magnetic shielding, power coupler and frequency tuner has been tested in a specially designed single cavity cryomodule in one of the caves of the DESY Accelerator Module Test Facility (AMTF). The cavity was tested in high power pulsed opera...

The European X-Ray Free Electron Laser (XFEL), the research facility currently under construction in the Hamburg area, Germany, is based on a superconducting linear accelerator that brings electrons to almost the speed of light. The linear accelerator consists of 100 accelerating cryomodules (CMs) operating at the temperature of 2 K. The thermal pe...

The European X-ray Free Electron Laser (XFEL), now under construction at DESY in Hamburg, will make an extensive use of 1.3 GHz superconducting cavities aimed at accelerating the electrons to the energy of 17.5 GeV. The cavities will be operated at 2 K with the use of saturated HeII. Prior to their assembly in accelerator cryomodules, the RF perf...

The aim of this empirical study was to create a concept for the implementation of a proactive risk management system in global value-added chains for fruit and vegetables. The focus was to develop a proposal for the categorisation of risks, as well as the systematisation of preventive failure identification and evaluation. This paper presents a gen...

Aim of the study was the application of biosensor technique to measure the concentration of an acute phase protein (APP) within complex matrices from animal origin. For the first time, acute phase protein haptoglobin (Hp) was detected from unpurified meat juice of slaughter pigs by a label-free biosensor-system, the SAW-based sam®5 system. The syst...

Aim of the study was to measure the potential impact of animal health and welfare on the carcass quality. 99 pigs under equal housing and feeding conditions were involved in the study. Effects of the immune system on carcass composition, meat quality and performance data of slaughter pigs became measureable by quantification of acute phase proteins...

The serum concentration of acute phase proteins (APPs) increases in the presence of disease or stress, which makes APPs notable parameters for the global assessment of animal health and welfare. A rapid, immunochromatographic test (ICT) for the detection of elevated levels of pig Major Acute-phase Protein (pig-MAP), one of the main APPs in pigs, wa...

Session spéciale : Q-Porkchains

What is known and objective: In analgesic trials, pain relief is often assessed using a pain-relief score. We aimed to assess, through a meta-analysis, whether absence of need for rescue medication (NNR) is a reliable outcome measure in the evaluation of acute pain relief. Methods: Individual-patient meta-analysis of placebo-controlled trials of...

Storage tests were conducted to identify and compare factors influencing the growth of Pseudomonas spp. as specific spoilage organism on fresh pork and poultry. Besides the extrinsic factor, temperature, the intrinsic factors, pH-value, aw-value, Warner-Bratzler shear force (WBSF), d-glucose, L-lactic acid, fat and protein content were analyzed. Th...

mopb017 - ISBN 978-3-95450-122-9

The Multi-Commodity k-splittable Maximum Flow Problem consists in routing as much flow as possible through a capacitated network such that each commodity uses at most k paths and the capacities are satisfied. The problem appears in telecommunications, specifically when considering Multi-Protocol Label Switching. The problem has previously been solv...

Final report of Q-PORKCHAINS project.

Purpose – An optimal temperature monitoring is a prerequisite for cold chain management and thus for the production and supply of high quality and safe products as well as for the reduction of waste and economic losses. The aim of this paper is to identify and compare already existing temperature monitoring solutions in operation and novel temperat...

The steroidal pig pheromones androstenone (5α-androst-16-en-3-one), 3α-androstenol (5α-androst-16-en-3α-ol), and 3β-androstenol (5α-androst-16-en-3β-ol) as well as the heterocyclic aromatic amines skatole and indole, originating from microbial degradation of tryptophan in the intestine of pigs, are frequently recognized as the major compounds respo...

Special Time Temperature Indicators (TTI) are able to display temperature histories by colors, so that the TTIs are able to provide information of the freshness of specific products. To use TTIs in different steps of the supply chain the following requirements need to be fulfilled: Kinetic models to predict the response of the TTIs as a function of...

This paper presents a new chain coordination model for quality management strategies of European pork supply chains. It is a result of qualitative research into intensive and extensive pork production in seven selected countries consisting of a literature review, country-specific expert interviews and case studies. The model defines strategic roles...

Changes in consumer's behaviour and technological advances of the industrial food production need innovative quality strategies. Especially the pork sector has implemented new innovative quality strategies for convenient products in recent times. For this reason, the role of quality management methods within the pork value chain is more and more im...

The European x-ray free electron laser is under construction at Deutsches Elektronen-Synchrotron (DESY). The electron beam energy of up to 17.5 GeV will be achieved by using superconducting accelerator technology. Final prototyping, industrialization, and new infrastructure are the actual challenges with respect to the accelerating cavities. This p...

The data collected by the L3+C muon spectrometer at the CERN Large Electron-Positron collider, LEP, have been used to search for short duration signals emitted by cosmic point sources. A sky survey performed from July to November 1999 and from April to November 2000 has revealed one single flux enhancement (chance probability = 2.6X10^{-3}) between...

The data collected by the L3+C muon spectrometer at the CERN Large Electron-Positron collider, LEP, have been used to search for short duration signals emitted by cosmic point sources. A sky survey performed from July to November 1999 and from April to November 2000 has revealed one single flux enhancement (chance probability = 2.6 x 10(-3)) betwee...

SummaryA detailed investigation of the behaviour of a new printable photochromic time–temperature indicator (TTI) was conducted to characterise its properties under specific temperature conditions and to analyse the influence of ultra violet (UV) light irradiation (activation) on the discolouration process. The reproducibility of the charging proce...

Quantification of acute phase proteins (APPs) in blood can be used for monitoring animal health and welfare on farms, and could be also of interest for the detection of diseased animals during the meat inspection process. However serum or plasma is not always available for end-point analysis at slaughter. Meat juice might provide an adequate, alter...

Development of a predictive model for the determination of the shelf life of modified atmosphere-packed (MAP) cooked sliced ham in each step of the cold chain. The growth of lactic acid bacteria (LAB), as well as the development of the total viable count and changes of sensory and pH value parameters in MAP cooked sliced ham, stored under different...

In a search for B-->cc[over ]gammaK decays with the BABAR detector, where cc[over ] includes J/psi and psi(2S), and K includes K(+/-), K(S)(0), and K(*)(892), we find evidence for X(3872)-->J/psigamma and X(3872)-->psi(2S)gamma with 3.6sigma and 3.5sigma significance, respectively. We measure the product of branching fractions B(B(+/-)-->X(3872)K(+...

The ATLAS experiment is preparing for data taking at 14 TeV collision energy. A rich discovery physics program is being prepared in addition to the detailed study of Standard Model processes which will be produced in abundance. The ATLAS multi-level trigger system is designed to accept one event in 2 105 to enable the selection of rare and unusual...

In this book the results are presented of a comprehensive inventory of pork chains that has been conducted through expert interviews and in-depth case studies. The main focus of the book is on how well diverse and fragmented supply in the European pork sector matches differentiating demands for pork products in rapidly evolving markets. One of the...

Bei der Verbreitung von Krankheitserregern und bei der Rückverfolg-barkeit im Krisenfall spielt unter anderem die Handelsstruktur entlang der Produk-tionskette eine bedeutende Rolle. Mit Hilfe von Methoden der Netzwerkanalyse werden Tierbewegungsdaten aus der Datenbank des Herkunfts-und Informations-sicherungssystems für Tiere (HI-Tier) zwischen Ri...

Problem Statement In the future health management for livestock farming will become increasingly important at company level, but above all at inter-company level (PETERSEN et al., 2007). Therefore two reasons are to be appointed for the German meat sector: • Structural change in production chains (increasing size of farm units and decreasing number...

We report a measurement of the branching fractions of B-->D**(l) nu(l), decays based on 417 fb(-1) of data collected at the Y(4S) resonance with the BABAR detector at the PEP-II e+e- storage rings. Events are selected by full reconstructing one of the B mesons in a hadronic decay mode. A fit to the invariant mass differences m(D(*) pi)- m(D(*)) is...

The objective of this research approach is to analyse in which ways crisis management measures against Classical Swine Fever (CSF) can be improved by a public private cross border model. A core activity contains the analysis of information and communication systems: In a case study it has been empirically analysed if a sufficient supply of public a...

We perform a measurement of the CP asymmetry in b-->sgamma decays using a sample of 383 x 10(6) B[over] B events collected by the BABAR detector at the SLAC PEP-II asymmetric B factory. We reconstruct 16 flavor-specific B decay modes containing a high-energy photon and a hadronic system X_(s) containing an s quark. We measure the CP asymmetry to be...

This article reports world averages for measurements of b-hadron and c-hadron properties obtained by the Heavy Flavor Averaging Group (HFAG) using the results available at the end of 2007. For the averaging, common input parameters used in the various analyses are adjusted (rescaled) to common values, and known correlations are taken into account....

Context. Primary cosmic rays experience multiple deflections in the non-uniform galactic and heliospheric magnetic fields which may generate anisotropies. Aims. A study of anisotropies in the energy range between 100 and 500 GeV is performed. This energy range is not yet well explored. Methods. The L3 detector at the CERN electron-positron collider...

During the last few years Europe has made enormous progress towards free electron laser (FEL)-based research infrastructures. The FLASH facility [11. Ayvazyan , V. 2006 . Eur. Phys. J. D , 37 : 297 [CrossRef], [Web of Science ®]View all references] at DESY in Hamburg, Germany, has been in user operation since the summer of 2005; FERMI@Elettra [2Vie...

Die für Deutschland typische zweistufige Vermarktung von Schlacht-vieh steht unter erheblichem Wettbewerbsdruck.I n diesem Beitrag zeigen wir das Potential von technischen und organisatorischen Innovationen zur Verbesserung ihrer Wettbewerbsfähigkeit auf.

An overall concept for a generic model to predict the remaining shelf life of meat in different steps of the supply chain was developed. It consists of three models: a shelf life model, an inter-organisational cold chain model and a temperature mapping model including heat transfer model. In this concept, shelf life will be predicted by the growth...

The overall objective of the PromSTAP subproject MonStratFood was the exchange of know-how of different approaches from selected food chains to improve food quality and safety during the food chain between the participating regions. The individual subprojects of the partners are quite divers because the regions focus on different food supply chains...

We present measurements of the branching fractions for the decays B+/- --> a1(1260)+/- pi0 and B+/- --> a1(1260)0 pi+/- from a data sample of 232 * 10^6 BB pairs produced in e+e- annihilation through the Y(4S) resonance. We measure the branching fraction B(B+/- --> a1(1260)+/- pi0) * B(a1(1260)+/- --> pi- pi+ pi+/-) = (13.2 +/- 2.7 +/- 2.1) * 10^-6...

The b (b) over bar production cross section in 920 GeV proton-nucleus fixed target collisions is measured by observing double muonic decays of b-flavoured hadrons in the kinematic region -0.3 < X-F(mu) < 0.15. A total number of 83 +/- 12b (b) over bar events is obtained with a likelihood fit of the signal and background simulated events to the data...

Operation of a free-electron laser from the extreme ultraviolet to the water window; We report results on the performance of a free electron laser operating at a wavelength of 13.7 nm where unprecedented peak and average powers for a coherent EUV radiation source have been measured. In the saturation regime the peak energy approached 170 μJ for i...

EXFEL Consortium at DESY Hamburg; European X-Ray Free Electron Laser; Operation of a Free-electron Laser from the Extreme Ultraviolet to the Water Window; Nature Photonics; We report results on the performance of a free-electron laser operating at a wavelength of 13.7 nm where unprecedented peak and average powers for a coherent extreme-ult...

Es besteht ein weitgehender Konsens über den Bedarf und Nutzen von überbetrieblichen Informationssystemen für Aufgaben im Qualitäts- und Gesundheitsmanagement in Wertschöpfungsketten der Fleischerzeugung. Forderungen nach einem kontinuierlichen Informationsaustausch zwischen Tierhaltern, Schlachthöfen, Fleischverarbeitungsunternehmen und Behörden f...

Die anhaltende öffentliche Diskussion um Pflanzenschutzmittel-Rückstände in Obst- und Gemüseprodukten fordert von Wirtschaft und Behörden erweiterte Strategien zur Beherrschung und, wo möglich, kontinuierlichen Reduzierung von Rückständen. Dabei hat sich auf den einzelnen Stufen der Wertschöpfungskette in den letzten Jahren eine neue Dynamik entwic...