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Search Results: 1 - 10 of 50 matches for " Essi Huhtinen "
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A large point-source outbreak of Salmonella Typhimurium linked to chicken, pork and salad rolls from a Vietnamese bakery in Sydney
Sophie Norton,Essi Huhtinen,Stephen Conaty,Kirsty Hope
Western Pacific Surveillance and Response , 2012,
Abstract: Introduction: In January 2011, Sydney South West Public Health Unit was notified of a large number of people presenting with gastroenteritis over two days at a local hospital emergency department (ED).Methods: Case-finding was conducted through hospital EDs and general practitioners, which resulted in the notification of 154 possible cases, from which 83 outbreak cases were identified. Fifty-eight cases were interviewed about demographics, symptom profile and food histories. Stool samples were collected and submitted for analysis. An inspection was conducted at a Vietnamese bakery and food samples were collected and submitted for analysis. Further case ascertainment occurred to ensure control measures were successful.Results: Of the 58 interviewed cases, the symptom profile included diarrhoea (100%), fever (79.3%) and vomiting (89.7%). Salmonella Typhimurium multiple-locus-variable number tandem repeats analysis (MLVA) type 3-10-8-9-523 was identified in 95.9% (47/49) of stool samples. Cases reported consuming chicken, pork or salad rolls from a single Vietnamese bakery. Environmental swabs detected widespread contamination with Salmonella at the premises.Discussion: This was a large point-source outbreak associated with the consumption of Vietnamese-style pork, chicken and salad rolls. These foods have been responsible for significant outbreaks in the past. The typical ingredients of raw egg butter or mayonnaise and pate are often implicated, as are the food-handling practices in food outlets. This indicates the need for education in better food-handling practices, including the benefits of using safer products. Ongoing surveillance will monitor the success of new food regulations introduced in New South Wales during 2011 for improving food-handling practices and reducing foodborne illness.
Effects of a rumen protected B vitamin blend upon milk production and component yield in lactating dairy cows  [PDF]
Essi Evans, David T. Mair
Open Journal of Animal Sciences (OJAS) , 2013, DOI: 10.4236/ojas.2013.31011
Abstract:

Results from 12 switchback field trials involving 1216 cows were combined to assess the effects of a protected B vitamin blend (BVB) upon milk yield (kg), fat percentage (%), protein %, fat yield (kg) and protein yield (kg) in primiparous and multiparous cows. Trials consisted of 3 test periods executed in the order control-test-control. No diet changes other than the inclusion of 3 grams/cow/ day of the BVB during the test period occurred. Means from the two control periods were compared to results obtained during the test period using a paired T test. Cows include in the analysis were between 45 and 300 days in milk (DIM) at the start of the experiment and were continuously available for all periods. The provision of the BVB resulted in increased (P < 0.05) milk, fat %, protein %, fat yield and protein yield. Regression models showed that the amount of milk produced had no effect upon the magnitude of the increase in milk components. The increase in milk was greatest in early lactation and declined with DIM. Protein and fat % increased with DIM in mature cows, but not in first lactation cows. Differences in fat yields between test and control feeding periods did not change with DIM, but the improvement in protein yield in mature cows declined with DIM. These results indicate that the BVB provided economically important advantages throughout lactation, but expected results would vary with cow age and stage of lactation.

Effects of a rumen protected B vitamin blend substituted for biotin upon milk production and component yield in lactating dairy cows  [PDF]
Essi Evans, David T. Mair
Open Journal of Animal Sciences (OJAS) , 2013, DOI: 10.4236/ojas.2013.32014
Abstract:

Results from 4 switchback field trials involving 608 cows were combined to assess the effects of a protected B vitamin blend (BVB) vs 10 mg of unprotected biotin upon milk yield (kg), fat %, protein %, fat yield (kg) and protein yield (kg) in primiparous and multiparous cows. Trials consisted of 3 DHIA periods executed in the order control-test-control. Cows from 45 to 300 days in milk (DIM) at the start of the experiment that were available for all 3 periods were included in the analysis. No diet changes other than the substitution of 3 grams/cow/day of the BVB for 10 mg of biotin during the test period occurred. Results from the two control periods were compared to results obtained during the test period by individual cow using a paired T test. Results for all cows showed that the provision of the BVB resulted in increased (P < 0.05) milk, fat percentage (%), protein %, fat yield and protein yield. Analysis by age revealed that milk production and milk protein yield were only improved in mature cows. Milk production had a negative effect upon the magnitude of the increase in milk components. The change in milk yield was greatest in early lactation and declined with DIM. Protein % and fat % increased with DIM in mature cows, but not in first lactation cows. Differences in fat yields between test and control feeding periods did not change with DIM, but the improvement in protein yield in mature cows declined with DIM. These results indicate that the BVB provided economically important advantages throughout lactation beyond those witnessed with biotin, but expected results would vary with cow age and stage of lactation.

The Cinematic Land of Tapio: Suburban Finland Reimagined
Essi Viitanen
Opticon1826 , 2012, DOI: 10.5334/opt.ac
Abstract: The paper examines how the suburban spaces of Tapiola in Finland are cinematically reimagined in Jaakko Pakkasvirta’s film The Green Widow (1968). The film was produced during a time of rapid urbanization, the development of the Finnish welfare nation, and the birth of the Finnish suburb. The design, renaming, and construction of the Tapiola area especially became an excercise in creating a visual representation of the welfare policies and thus quite literally contributed to the building of a nation. This official vision of Tapiola is challenged by Pakkasvirta’s The Green Widow. The film focuses on the lived experience of the suburb from the point of view of a housewife and constructs a very different visual world. The relationship between the concrete built environment and the cinematically-imagined one become competing versions of reality.
Methods to Evaluate Rumen Protected Lysine for Dairy Cows  [PDF]
Essi Evans, Josh Lamont, Helene Leclerc
Open Journal of Animal Sciences (OJAS) , 2015, DOI: 10.4236/ojas.2015.54051
Abstract: There are many rumen protected amino acid products available for dairy cattle feeding. However, feed formulation programs require values related to rumen solubility, rate of disappearance in the rumen and total tract digestibility and often such values are not available. In vivo testing procedures are complex, time consuming and expensive. This study was conducted to determine if a newrapid, lower cost in vitro method developed for feed ingredients could be applied to a rumen protected lysine product (DairynatLys-30, Jefo Nutrition Inc). In vivo determination of the rapidly solubilized protein fraction, rate of degradation of the slowly solubilized fraction and total tract digestibility studies were compared to the in vitro method in use in many ingredient analysis laboratories for feed ingredients such as forages, protein supplements and grains. Results showed that the rapidly soluble fraction (8.33% and 8.66% of total N for in vivo and in vitro methods) and rates of disappearance in the rumen (2.64%/h and 2.43%/h for in vivo and in vitro procedures) compared favorably between the two methods for the rumen protected product. Total tract digestibility values were slightly higher (84.4%) with the in vivo method used than with the in vitro method (75.9%), and both are in the expected calculated range of digestibility of 80%. In conclusion the in vitro method appears to be an acceptable alternative for evaluating rumen protected amino acids.
Teachers' professional development in a community: A study of the central actors, their networks and web-based learning
Essi Ryymin,Jiri Lallimo
E-learning and Education , 2008,
Abstract: The goal of this article was to study teachers' professional development related to web-based learning in the context of the teacher community. The object was to learn in what kind of networks teachers share the knowledge of web-based learning and what are the factors in the community that support or challenge teachers professional development of web-based learning. The findings of the study revealed that there are teachers who are especially active, called the central actors in this study, in the teacher community who collaborate and share knowledge of web-based learning. These central actors share both technical and pedagogical knowledge of web-based learning in networks that include both internal and external relations in the community and involve people, artefacts and a variety of media. Furthermore, the central actors appear to bridge different fields of teaching expertise in their community.According to the central actors' experiences the important factors that support teachers' professional development of web-based learning in the community are; the possibility to learn from colleagues and from everyday working practices, an emotionally safe atmosphere, the leader's personal support and community-level commitment. Also, the flexibility in work planning, challenging pupils, shared lessons with colleagues, training events in an authentic work environment and colleagues' professionalism are considered meaningful for professional development. As challenges, the knowledge sharing of web-based learning in the community needs mutual interests, transactive memory, time and facilities, peer support, a safe atmosphere and meaningful pedagogical practices.On the basis of the findings of the study it is suggested that by intensive collaboration related to web-based learning it may be possible to break the boundaries of individual teachership and create such sociocultural activities which support collaborative professional development in the teacher community. Teachers' in-service training programs should be more sensitive to the culture of teacher communities and teachers' reciprocal relations. Further, teacher trainers should design teachers' in-service training of web-based learning in co-evolution with supporting networks which include the media and artefacts as well as people.
Evaluation of grain corn grown in New Brunswick for dairy cows  [PDF]
Essi H. Evans, Nancy Clark, Josh Lamont, David Walker
Open Journal of Animal Sciences (OJAS) , 2013, DOI: 10.4236/ojas.2013.31010
Abstract:

Corn harvested as grain is a relatively new crop for the province of New Brunswick. The recent availability of local corn has the potential to improve the sustainability of the dairy industry in New Brunswick, but there is debate within the industry concerning the value and best use of the grain. This experiment was conducted to assess the feeding value of locally-produced corn grain stored as dry grain, ensiled high moisture corn, or ensiled as high moisture corncob meal (HMCCM, unhusked ears sometimes referred to as snaplage) relative to dry grain obtained from Ontario. Three samples of each were evaluated In Sacco. Rates and extent of digestion were similar for local and Ontario corn regardless of presentation for crude protein and starch, but acid detergent fiber, neutral detergent fiber and dry matter digestibility values were lower for HMCCM than other treatments. A 4 × 4 Latin square study was conducted with 16 Holstein cows and 28 day feeding periods. Milk production and milk protein production were higher (P < 0.05) with the locally produced dry corn than with other treatments. Energy corrected milk was lowest with the HMCCM diet. These results indicated that the value of corn produced in New Brunswick is similar to that produced in Ontario.

Estimation of Methane Emission from Kossihouen Sanitary Landfill and Its Electricity Generation Potential (C?te d’Ivoire)  [PDF]
Kouakou Adjoumani Rodrigue, Kra Essi, Kouadio Marc Cyril, Trokourey Albert
Journal of Power and Energy Engineering (JPEE) , 2018, DOI: 10.4236/jpee.2018.67002
Abstract: In order to solve the problem of the management of municipal solid waste in Abidjan (Cote d’Ivoire), a sanitary landfill has been designed in Kossihouen. Despite the adverse greenhouse effects of the methane, this gas has a potential of electrical energy. The estimation of methane emissions from the waste can be an economic and useful way for more accurate control and management of waste disposal in Kossihouen. Therefore, conducting this study is essential. Methane emissions were estimated based on the methane generation constant K and the methane generation potential L0 using LandGEM 3.02. The results show that the quantity of methane emissions was 7.97E+07 m3/year. Based on this result, the methane content can generate 10% of total electricity consumed in Abidjan in 2026. This paper could serve as a source of scientific information for decision making on environmental sustainability in waste-to-energy projects in Cote d’Ivoire.
Optimization of Pr0.9Ca0.1MnO3 thin lms with varying in-situ oxygen annealing treatments
Elovaara T.,Huhtinen H.,Majumdar S.,Paturi P.
EPJ Web of Conferences , 2013, DOI: 10.1051/epjconf/20134015011
Abstract: The in uence of in situ oxygen annealings on narrow electronic bandwidth Pr0.9Ca0.1MnO3 lms are investigated in the complex phase separation region. Measurements by x-ray diffractometry and SQUID magnetometry reveal that relatively high deposition temperature at 700 °C relaxes the lattice by twin boundaries while the lower deposition temperature at 500 °C with higher post-annealing temperature of 700 °C relaxes the substrate induced strain via oxygen absorption and makes the lm structure more homogeneous. This behaviour is clearly supported by the decrease of ferromagnetic ordering due to decrease of Mn3+ ions in lms oxygen annealed at high temperatures and this phenomenon is widely discussed with the models of double-exchange interaction, trapping of carriers in the oxygen vacancies and formation of magnetic polarons. The results show unambiguously that because the oxygen content tailors many physical properties dramatically, the annealing treatments are in very important role when optimizing these materials for future applications.
The effect of lm thickness on the magnetic and magneto-transport properties of Sr2FeMoO6 thin lms
Saloaro Minnamari,Majumdar Sayani,Huhtinen Hannu,Paturi Petriina
EPJ Web of Conferences , 2013, DOI: 10.1051/epjconf/20134015012
Abstract: Magnetoresistive Sr2FeMoO6 thin lms were grown by pulsed laser deposition with three di erent thicknesses 150 nm, 270 nm and 500 nm. Structural, magnetic and magneto-transport properties of the lms were measured. Structural properties showed that impurity phases are formed when the lm thickness exceed limiting thickness over 300 nm. Otherwise no major di erences were observed in structural and magnetic properties between the lms. The semiconductive upturn was observed in all ρ(T) curves, but it was notably smaller for the two thickest lms. At 350 K the magnetoresistive (MR) behaviour was very similar for all the lms, but at 10 K the negative MR was clearly largest for the thickest lm and also the shape of the curve in low elds deviated from others.
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