268 research outputs found
Susceptibility to Apple Scab, Nectria Cancer and Powdery Mildew of Different Unsprayed Apple Varieties
Twentyfive apple varieties were evaluated for Apple scab (Venturia inaqualis), Nectria
canker (Nectria galligena) and Powdery mildew (Podosphaera leucotricha) for 4 to 7 years.
The trees were grown unsprayed. The weather conditions at the experimental orchard
normally results in high infections of apple scab and low infections of powdery mildew.
Infections of Apple scab is often seen also in scab resistant varieties. Williams Pride,
Katinka and Katrina (scabresistant varieties) were the only varieties not showing scab in
the experimental period. The two scabresistant varieties Angold and Produkta (varieties
having a poor fruit quality) was unsusceptible to Nectria canker. The reference variety
Elstar/Elshof was in all plantings among the most resistant varieties. Powdery mildew is
not a problem at the experimental orchard. Most varieties had low susceptibility to
Powdery mildew. Varieties with low susceptibility to diseases in general were Angold,
Produkta, Rajka, Rubinola, Ahrista, Gerlinde, Gul Richard, Sukkertop, Katinka, Katrina,
Marian and Primicia
Regulation (EC) No 1901/2006 on medicinal products for paediatric use & clinical research in vulnerable populations
Before any medicinal product is authorised for use in adults, it must undergo extensive pharmaceutical consistency and stability tests, toxicological tests and clinical trials to ensure that it is of high quality, safe and effective
Sensory quality of scab-resistant apple cultivars
Twenty-two scab-resistant apple cultivars were harvested in autumn 1999 and evaluated for sensory quality the following October, November and December. Multivariate analysis was effective in describing the comblex relationships and variabillity among the numerous attributes used to characterise apple quality. Crispness, mealiness, skin toughness, apple flavour, sweetness, unripe flavour and overripe flavour were informative attributes describing the variation in the sensory quality. Texture attributes, apple flavour and overripe flavour were affected by storage. Extended storage resulted in an increase in mealiness and overripe flavour and a decrease in crispness, juiciness and apple flavour. Many potential scab-resistant cultivars were suitable for consumption in October: 'Dayton', 'Primicia', 'Retina' and 'Realka'; in November: 'Merlijn', 'Saturn', 'Initial', 'Realka', 'Rajka' and 'Rubinola'; and in December: 'Otava', 'Ecolette', 'Rejka', 'Rubinola', 'Delorina', 'Initial' and 'Resista' and 'Topaz'. This study gives a sensory sharacterisation of scab-resistant cultivars as an indicator of suitability for commercial growing and marketing of low-input apple cultivars
Competitiveness of The Top 15 Main Export Destinations of Indonesia's Natural Rubber for 1991–2020
This study aims to analyze the position and performance of Indonesia's natural rubber exports in terms of the concept of comparative advantage in the market world. The data used in this study were sourced from UN Comtrade, which is processed with a 30-year data series (1991-2020) and is categorized into six periods. The analytical methods used are Structural Trend Ranking (STR), Revealed Comparative Advantage (RCA), Export Product Dynamic (EPD), and X-Model. The results showed that 15 countries have consistently been the main Indonesian natural rubber market for 30 years. The RCA analysis showed that Indonesian natural rubber had strong competitiveness in all destination countries, except India in the first period. In contrast, the EPD analysis found that Indonesia's rubber market position was not always static and competitive. There was shown in the period 2011-2015, the average position of Indonesia's natural rubber market is in a market position that is not wanted to "retreat" in export destination countries. However, based on the X-Model results, the average Indonesian natural rubber is in a potential market position in all export destination countries in the 1991-2020 period.
Keywords: Export Product Dynamic (EPD), natural rubber, Revealed Comparative Advantage (RCA), Structural Trend Ranking (STR), x-mode
Möglichkeiten der Beeinflussung der mikrobiologischen Wildfleischqualität auf Bewegungsjagden: Möglichkeiten der Beeinflussung der mikrobiologischenWildfleischqualität auf Bewegungsjagden
Möglichkeiten der Beeinflussung der mikrobiologischen Wildfleischqualität auf Bewegungsjagden
Institut für Lebensmittelhygiene der Veterinärmediziniscen Fakultät der Universität Leipzig
Eingereicht im November 2015
57 Seiten, 12 Abbildungen, 5 Tabellen, 59 Literaturangaben
Einleitung
Im Zuge neuer Jagdstrategien erhält das Konzept der großräumigen Bewegungsjagden immer größere Bedeutung beim Erzielen der Gesamtstrecke und damit auch des Gesamtwildfleischaufkommens.
Durch wildverarbeitende Betriebe findet das Produkt Wildfleisch über Supermärkte,Feinkostläden aber auch Fleischertheken den Weg zum Endverbraucher. Ein großer Anteil des für diese Wildhändler wichtigen Weihnachtsgeschäfts wird in der Zeit von Oktober bis Dezember über den Aufkauf von Bewegungsjagdstrecken generiert.
Das Ziel dieser Untersuchung ist es, mit Hilfe der in der Schlachtindustrie angewendeten Analysemethode der Tierkörperbeprobung mit Stanzproben vier unterschiedliche Regime zur Behandlung von auf Bewegungsjagden erlegten Wild in Hinsicht auf die mikrobiologische Qualität zu untersuchen. Des Weiteren wird die mikrobielle Belastung der verschiedenen Wildarten gegenüberstellend mit den mikrobiologischen Prozesshygienekriterien der VO (EG) Nr. 2073/2005 (ANON. 2005) für Schlachtkörper von Nutztieren verglichen.
Material und Methoden
Die Gewinnung der Proben erfolgte im Zeitraum von Oktober 2011 bis Januar 2012 in einem schleswig-holsteinischen Wildverarbeitungsbetrieb. Insgesamt wurden 217 Schlachttierkörper der Wildarten Reh-, Schwarz-, Dam- und Rotwild in vier verschiedenen Gruppen beprobt.
Für Gruppe 1 erfolgte das Ausweiden im Wald durch den Jäger selbst. Die Wildtierkörper wurden revierüblich zum Streckenplatz transportiert, dort in liegender Weise präsentiert und anschließend revierüblich zum Wildverarbeitungsbetrieb transportiert. Gruppe 2 unterscheidet sich von Gruppe 1 durch ein zentrales Ausweiden direkt am Streckenplatz. Für Gruppe 3 wurden neben dem zentralen Ausweiden die Präsentation der Strecke in hängender Form und ein gekühlter Transport zum Wildverarbeitungsbetrieb gewählt. Für Gruppe 4 entfiel die Präsentation komplett und die Wildtierkörper wurden direkt nach dem zentralen Ausweiden in einem Kühltransporter verladen und anschließend abtransportiert.
Nach der Enthäutung wurden insgesamt vier Proben mit jeweils 5 cm2 Fläche im Hals-, Brust-, Flanken- und Keulenbereich eines jeden Wildtierschlachtkörpers entnommen. Es erfolgte auf direktem Weg ein gekühlter Transport zum Institut für Lebensmittelhygiene der veterininärmedizinischen Fakultät Leipzig.
Für die mikrobiologische Analyse der Gesamtkeimzahl (GKZ), Enterobakterien (EBAC), Enterokokken (EKOK) und Staphylokokken wurde für die ersten 30 der 217 Proben das Spatelverfahren
angewendet. Die restlichen 187 Proben wurden aufgrund der stark zunehmenden Probenzahlen mit Tropfplattenverfahrens analysiert.
Für Listeria monocytogenes wurden spezielle ALOA-Platten und die entsprechenden biochemischen Nachweismethoden für einen qualitativen Nachweis verwendet. Der qualitative Nachweis von Salmonella spp. wurde mit Voranreicherung und folgenden biochemischen Reaktionen geführt.
Ergebnisse
Im Vergleich zu den festgelegten Werten der VO (EG) Nr. 2073/2005 (ANON. 2005) für schlachtbare Haustiere sind die ermittelten Werte dieser Untersuchung positiv zu bewerten.
So liegen für Enterobakterien die Werte von Schwarz- (1,41 log KbE/cm2) und Damwild (1,43 log KbE/cm2) jeweils unter dem unteren Grenzwert für Haustiere und können somit als befriedigend eingestuft werden. Mit Werten zwischen dem unteren und oberen Grenzwert fallen Reh- (1,99 log KbE/cm2) und Rotwild (2,33 log KbE/cm2) in den akzeptablen Bereich.
Ein ähnliches Bild zeigt sich bei der Gesamtkeimzahl. Schwarz- (3,51 log KbE/cm2) und Damwild (3,32 log KbE/cm2) liegen erneut im befriedigenden, Reh- (3,79 log KbE/cm2) und Rotwild (3,85 log KbE/cm2) im akzeptablen Bereich.
In keiner der analysierten Wildfleischproben konnten Salmonella spp. oder Listeria monocytogenes nachgewiesen werden. Für Koagulase-positive Staphylokokken ergibt sich eine Nachweisrate von 3,2 % mit einem Mittelwert von 2,44 KbE/cm2.
Die über alle Proben gemittelten Werte ergeben 3,57 log KbE/cm2 für die GKZ, 1,60 log KbE/cm2 für EBAC und 0,88 log KbE/cm2 für die EKOK.
Für Gruppe 1 wurden für die GKZ Mittelwerte von 3,46 KbE/cm2, für EBAC 1,34 KBE/cm2 und für EKOK 0,87 KbE/cm2 festgestellt. Gruppe 2 weist Werte von 3,78 KbE/cm2 (GKZ), 1,94 KbE/cm2 (EBAC) und 1,18 KbE/cm2 (EKOK) auf. Für Gruppe 3 wurden Mittelwerte von 3,48 KbE/cm2 (GKZ), 1,53 KbE/cm2 (EBAC) und 0,67 KbE/cm2 (EKOK) ermittelt. Gruppe 4 weist Werte von 3,60 KbE/cm2 (GKZ), 1,54 KbE/cm2 (EBAC) und 0,86 KbE/cm2 (EKOK) aus. Es konnten statistisch keine Unterschiede zwischen den Gruppen gesichert werden.
Schlussfolgerungen
Sauber erlegtes Wildfleisch erfüllt die mikrobiologischen Prozesshygienekriterien konventionell
geschlachteter Nutztiere. In der vorliegenden Untersuchung konnten keine hochpathogenen Keime wie Salmonella spp. oder Listeria monocytogenes nachgewiesen werden.
Die nicht vorhandenen statistischen Unterschiede zwischen den Gruppen deuten darauf hin, dass eine gute allgemeine Hygienepraxis für die Wildfleischqualität entscheidend ist.Possibilities to influence the microbiological game meat quality on driven hunts
Institute of Food Hygiene, Faculty of Veterinary Medicine, University of Leipzig
Submitted in November 2015
57 pages, 12 figures, 5 tables, 59 references
Introduction
With regard to new hunting strategies, the concept of large-scale driven hunts is increasingly gaining importance for the annual hunting bag and subsequently the total amount of game meat. Via game meat processing enterprises, game meat finds its way along the food chain to
the consumer. As game meat is a popular dish in Germany during the Christmas season, a high share of the total annual amount of game is shot within driven hunts from October to December.
The goal of this study is to examine the microbiological quality of game meat from hoofed game bagged at driven hunts. After killing, the animals were processed in four different ways with regard to transport, handling, and evisceration. The sampling of all carcasses was performed
in a local meat processing enterprise on four different sampling sites using a sterile metal punch. Qualitative and quantitative microbiological analysis of the samples was performed in order to (i) detect possible differences of the microbiological quality between the four different
groups, (ii) compare the microbiological quality of game and slaughtered farm animals, and (iii) develop best practice guidelines for the hygienic production and handling of game meat.
Material and methods
All sampling took place in a game handling establishment in the federal state of Schleswig-Holstein, Germany, from October 2011 until January 2012. Altogether, 217 carcasses of roe, fallow, and red deer as well as wild boar were sampled in 4 different groups.
In group 1 the evisceration of the animal was performed by the hunter. The eviscerated carcasses were hauled to the presentation area in a customary way and presented on the ground due to the hunting tradition. After presentation, the carcasses were transported to the game handling establishment in a customary way. In variation from this, the animals of group 2 were eviscerated together at the presentation area. The animals of group 3 were presented hanging
on racks instead of lying and a refrigerated transport to the game handling establishment was used. In group 4 the presentation of the animals after evisceration was skipped and the carcasses
were transported to the game handling establishment in a refrigerated vehicle.
After skinning, four samples were taken in the area of the neck, chest, flank and joint of each carcass with sterile instruments. The chilled samples were directly brought to the institute of food hygiene of the veterinary medicine faculty of the University of Leipzig. In total, 217 samples were examined with quantitative microbiological methods for mesophilic aerobic bacteria, enterobacteriaceae, enterococci and staphylococci. In addition, qualitative analysis on Listeria
monocytogenes and Salmonella spp. was performed on all samples.
Results
Group 1 shows a mean amount of mesophilic aerobic bacteria of 3.46 cfu/cm2, a mean of 1.34 cfu/cm2 for enterobacteriaceae and a mean of 0.87 cfu/cm2 for enterococci. Group 2 shows a mean amount of mesophilic aerobic bacteria of 3.78 cfu/cm2, a mean of 1.94 cfu/cm2
for enterobacteriaceae and a mean of 1.18 cfu/cm2 for enterococci. For group 3 mean values of 3.48 cfu/cm2 (total plate count), 1.53 cfu/cm2 (enterobacteriaceae), and 0.67 cfu/cm2 (enterococci)
were found. For Group 4 mean values of 3.60 cfu/cm2 (total plate count), 1.54 cfu/cm2 (enterobacteriaceae) and 0.86 cfu/cm2 (enterococci) were determined. No statistically significant
differences between the groups could be confirmed.
Compared to the process hygiene criteria for the carcasses of farm animals laid down in Commission Regulation (EC) No 2073/2005 (ANON. 2005) on microbiological criteria for foodstuffs,
the results of this study have to be rated in a positive way. The average values for enterobacteriaceae for wild boar (1.41 log cfu/cm2) and fallow deer (1.43 log cfu/cm2) are below the lower limit for farm animals and can be rated as satisfying. The counts for enterobacteriaceae in roe deer (1,99 log cfu/cm2) and the red deer (2,33 log cfu/cm2) are still acceptable, in this respect.
The average total plate count values in samples from wild boar (3,51 log cfu/cm2) and fallow deer (3,32 log cfu/cm2) is also satisfying. Roe (3,79 log cfu/cm2) and red deer (3,85 log cfu/cm2) can be deemed acceptable. Coagulase-positive staphylococci were found in 7 out of 217 samples or 3.2 % (mean 2,44 cfu/cm2). Also Salmonella spp. or Listeria monocytogenes were not detected in the samples.
Conclusion
Accurately hunted and processed game meat has a microbial burden that is comparable to
farm animals with regard to the process hygiene criteria for the carcasses of farm animals laid down in Commission Regulation (EC) No 2073/2005 (ANON. 2005) on microbiological criteria for foodstuffs.
In this study, no pathogens like Salmonella spp. or Listeria monocytogenes were found in the game meat samples.
The absence of a statistically significant difference between the groups indicates that not a specific set up during bagging and processing but rather the accurate placement of the shot as well as the strict compliance with the Guides to Good Hygiene Practice ensure a high microbiological quality of game meat as well as the absence of pathogenic microorganisms
Sådan smager de skurvresistente æblesorter
I 1999 blev der udført smagsbedømmelse af 21 skurvresistente æblesorter. Smagsbedømmelsen blev udført som en objektiv sensorisk test, hvor æblerne blev vurderet for 13 egenskaber. De vigtigste egenskaber til at beskrive sorterne var: Fasthed, sprødhed, melethed, æblesmag, sødhed, umoden smag og skind sejhed
Design and Implementation of Network Analyzer Using Raspberry Pi Platform
Cílem této práce je získat co nejvíce poznatků o realizaci handheld zařízení na platformě RaspberryPi. Na základě získaných poznatků takovéto zařízení sestrojit a zprovoznit. Dále do sestrojeného zařízení implementovat síťové funkce, včetně funkce IDS. Navržený model ověřit sadou testů a měřené hodnoty porovnat s teoretickými poznatky. Klíčovým parametrem tohoto měření je IDS, jehož funkce byly ověřovány pomocí testovacích nástrojů.The aim of this work is gaining much knowledge about realization hand-held devices on the platform RaspberryPi. Based on gained knowledge constructthis device and launch. Furthermore implement network functions including IDS function. Designed model verify series of tests and measured merits verify with theoretical knowledge. Crucial parameter of this measure is IDS and its functions were checked via test tools.440 - Katedra telekomunikační technikyvelmi dobř
Analysis of Developers Cooperation and Results Presentation Based on WP7
Import 30/10/2012Tato diplomová práce je rozdělena do dvou hlavních částí. V první části se zabývá analýzou
sítě vývojářů získanou z webového projektu Codeplex, sloužícího jako systém pro společný vývoj a
sdílení open-source projektů. Práce dále popisuje experimenty, na kterých byly vyzkoušeny možnosti
analýzy sociálních sítí vyvíjejících se v čase s pomocí dostupných analytických nástrojů, jako je
například Gephi. Tyto metody byly aplikovány na síť vývojářů vytvořenou nad serverem Codeplex.
Druhá část se zabývá popisem a možnostmi vývoje pro mobilní operační systém Windows Phone 7.
V rámci diplomové práce byly vytvořeny testovací aplikace využívající data zpracovaná v Gephi.
Webová aplikace a Windows Phone 7 aplikace používají k vzájemné komunikaci webové služby,
které dokáží pracovat s daty získanými z Codeplexu, respektive z vizualizačního nástroje Gephi.This diploma thesis is divided into two main parts. The first part deals with analysis of the
network obtained from the web developers CodePlex project, serving as a system for joint developing
and sharing of open-source projects. The thesis describes experiments in which they were tested in
their analysis of social networks evolve over time using the available analytical tools, such as Gephi.
These methods were applied to the network of developers, created from CodePlex. Another part deals
with the description and development possibilities for mobile Windows Phone 7 test applications were
developed using data processed in Gephi. Web application and Windows Phone 7 application use to
communicate Web Services that can work with data obtained from CodePlex, respectively, from the
visualization tool Gephi.440 - Katedra telekomunikační technikyvelmi dobř
Covid-19 Pandemic and Volatility of Sugar Price at Regional Level in Indonesia for The Period August 2018-August 2021
It is expected that the COVID-19 pandemic provides a significant impact on food price volatility in many products including sugar. The paper aims to analyze the price dynamic of sugar before covid (1st August – 2nd March 2020) and during the covid outbreak (3rd March – 31th August 2021) in all provinces in Indonesia by using the t-test and ARCH GARCH model. Based on Augmented Dickey-Fuller analysis before and during covid, the prices of sugar in Indonesia were stationary at the “first difference”. The results reveal that the prices of sugar in all provinces in Indonesia before covid was lower compared to during the COVID-19 pandemic. According to ARCH GARCH results, sugar prices were much more volatile in Riau, Jambi, West Java, East Nusa Tenggara, West Kalimantan, South Sulawesi, Central Sulawesi, and West Papua. As such, the government should focus to reduce the price volatility of sugar in these provinces.
Keywords: ARCH GARCH, COVID-19, sugar prices, stationarity, volatilit
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