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Search Results: 1 - 10 of 6962 matches for " Christine Berg "
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Analysis of Short Tandem Repeats by Parallel DNA Threading
Pawel Zajac,Christineberg,Afshin Ahmadian
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0007823
Abstract: The majority of studies employing short tandem repeats (STRs) require investigation of several of these genetic markers. As such, we demonstrate the feasibility of the trinucleotide threading (TnT) approach for scalable analysis of STRs. The TnT method represents a parallel amplification alternative that addresses the obstacles associated with multiplex PCR. In this study, analysis of the STR fragments was performed with capillary gel electrophoresis; however, it should be possible to combine our approach with the massive 454 sequencing platform to considerably increase the number of targeted STRs.
Beneficial effects of plant-associated microbes on indoor microbiomes and human health?
Gabriele Berg,Alexander Mahnert,Christine Moissl-Eichinger
Frontiers in Microbiology , 2014, DOI: 10.3389/fmicb.2014.00015
Abstract:
Virological and serological surveillance for type A influenza in the black-legged kittiwake (Rissa tridactyla)
Ragnhild Toennessen, Anna Germundsson, Christine M Jonassen, Irene Haugen, Kristin Berg, Robert T Barrett, Espen Rimstad
Virology Journal , 2011, DOI: 10.1186/1743-422x-8-21
Abstract: AIVs were detected from the oropharynx and cloaca in low amounts, with prevalences of 15% and 5%, in 2008 and 2009, respectively. Direct, partial sequencing of the hemagglutinin (HA) gene revealed that the H4 subtype was present. In 2009, antibodies to influenza A virus were detected in sera from 57 of 80 adult birds. In contrast, none of the three-week-old chicks (n = 18) tested seropositive. Hemagglutination inhibition (HI) assays demonstrated that the adult kittiwakes primarily had antibodies specific to the gull-associated H13 and H16 subtypes, with antibodies to H16 being most common.These results support that the highly pelagic black-legged kittiwake is a reservoir of AIV. The serological findings suggest that H16 might be the main AIV subtype in the black-legged kittiwake. Further studies are needed to understand the ecology of AIV in the black-legged kittiwake and in gulls in general.Wild birds in the orders Anseriformes (ducks, geese and swans) and Charadriiformes (gulls, terns and shorebirds) collectively are the natural reservoir for all known subtypes of avian influenza viruses (AIVs) [1,2]. The outbreaks of highly pathogenic (HP) AIV subtype H5N1 in Southeast Asia emphasized the importance of studying the dynamics of AIV infections in relation to the ecology of the natural hosts [3]. The global surveillance programs for the Eurasian HPAIV H5N1 in wild birds have contributed to increased knowledge about low pathogenic (LP) AIVs, particularly in ducks [4]. However, the epidemiology of AIV infections in most gull species is still only partially known [5,6].HPAI in wild birds was first detected in common terns (Sterna hirundo) in South Africa, 1961 [7]. Since then, AIVs, including Eurasian HPAI H5N1 [8-10], have been detected in several gull (Laridae) species [3]. The AIV prevalence in gulls has generally been found to be low [11].Influenza virus subtypes H13 and H16 seem to be gull-associated [2,12] and have been suggested to represent a unique gene pool o
Snoezelen, structured reminiscence therapy and 10-minutes activation in long term care residents with dementia (WISDE): study protocol of a cluster randomized controlled trial
Almuth Berg, Katharina Sadowski, Melanie Beyrodt, Stephanie Hanns, Markus Zimmermann, Gero Langer, Christiane Becker, Christine Lautenschl?ger, Johann Behrens
BMC Geriatrics , 2010, DOI: 10.1186/1471-2318-10-5
Abstract: The trial is designed as a cluster randomized controlled trial with 20 nursing homes in Saxony and Saxony-Anhalt (Germany) as the units of randomization. Nursing homes will be randomly allocated into 4 study groups consisting of 5 clusters and 90 residents: snoezelen, structured reminiscence therapy, 10-minutes activation or unstructured verbal communication (control group). The purpose is to determine whether the interventions are effective to reduce apathy in long-term care residents with dementia (N = 360) as the main outcome measure. Assessments will be done at baseline, 3, 6 and 12 months after beginning of the interventions.This trial will particularly contribute to the evidence on efficacy of non-pharmacological interventions in dementia care.ClinicalTrials.gov NCT00653731Dementia is one of the most frequent and serious diseases occurring in people of higher age. There are currently more than 6 million people with dementia in the European Union with the prevalence of the disease increasing in the next decades [1].People with dementia are often inapproachable due to symptoms of their illness. Besides cognitive disorders, primarily the non-cognitive symptoms of dementia, such as apathy, anxiety, depression, and challenging behavior, complicate the course of the disease and impede communication. Therefore nurses should establish relationships with dementia patients via their remaining resources and facilitate communication. Emotions, memories, important characteristics of the patients' biography, as well as perceptions on the somatic and emotional level can be used as resources in order to approach persons with dementia by using different pathways, even if communicative relationships are seemingly impeded.In order to achieve this, different conceptualized non-pharmacological interventions are recommended in practice guidelines and practiced [2,3]. However, there is no sufficient evidence about the efficacy of several of these interventions, such as snoezelen and
Process Adaption and Modifications of a Nutrient Removing Wastewater Treatment Plant in Sri Lanka Operated at Low Loading Conditions  [PDF]
Johanna Berg, Stig Morling
Materials Sciences and Applications (MSA) , 2013, DOI: 10.4236/msa.2013.45038
Abstract:

The Sri Lankan national water authority, that is The National Water Supply and Drainage Board (NWS&DB) has taken a new wastewater treatment plant into operation at Ja Ela, North of Colombo. The plant has been in operation since September 2011. In April 2012, it was concluded how a test of the aeration efficiency and a performance test should be carried out. The tests have been based on the actual loading of the plant and the analysis results from the daily process control. The evaluation of the aeration efficiency is not reported in this paper. The paper presents the overall performance of the water treatment part of the plant during start-up conditions, from fall 2011 through the first five months of 2012. The results from the operation are found in Table 1. An important circumstance at the plant is the current very low loading in comparison with the design load. This fact has resulted in an introduction of an intermittent mode of the aeration (nitrification) reactor. Based on operation figures, during more than a month (May 2012), it has been possible to give a realistic assessment of the overall performance. The most striking results are summarized as follows: 1) The intermittent operation has enabled an energy efficient operation of the plant. By the introduction of the intermittent aeration, the energy consumption has been reduced by around 75%, compared with the continuous operation mode; 2) The plant performance during the intermittent operation has been improved with respect to virtually all important pollu

Reliability of High Speed Ultra Low Voltage Differential CMOS Logic  [PDF]
Omid Mirmotahari, Yngvar Berg
Circuits and Systems (CS) , 2015, DOI: 10.4236/cs.2015.65013
Abstract: In this paper, we present a solution to the ultra low voltage inverter by adding a keeper transistor in order to make the semi-floating-gate more stable and to reduce the current dissipation. Moreover, we also present a differential ULV inverter and elaborate on the reliability and fault tolerance of the gate. The differential ULV gate compared to both a former ULV gate and standard CMOS are given. The results are obtained through Monte-Carlo simulations.
The Show-Up Identification Procedure: A Literature Review  [PDF]
Mattias Per Sj?berg
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.41012
Abstract: A show-up is an identification procedure that only presents the witness with one suspect in contrast to a lineup where the suspect is presented among a number of fillers (i.e., known innocent people). This feature makes the show-up procedure very suggestive. In this literature review, an overview of the current research about this identification procedure is presented. The different factors that influence the accuracy in show-up procedures are separated into system (e.g., clothing bias, instruction bias, and the impact of multiple show-ups) and estimator variables (e.g., age, cross-race effects, and alcohol) in line with Wells [1]. The implications of the research are discussed together with suggestions for future research.
Reducing Land Degradation on the Highlands of Kilimanjaro Region: A Biogeographical Perspective  [PDF]
Christine Noe
Open Journal of Soil Science (OJSS) , 2014, DOI: 10.4236/ojss.2014.413043
Abstract:

In 2012, governments across the world adopted “The Future We Want” outcome document in Rio De Janeiro as a commitment to achieve a land-degradation-neutral world. This document reasserts the importance of sustainable land management in the top of the debates on sustainable development. This paper provides an overview of Tanzania’s preparedness towards achieving these global objectives. The paper is based on a keynote address which was presented in the conference on reducing land degradation on the highlands of Kilimanjaro Region in Tanzania. Using a biogeographical perspective, the paper assesses challenges of adopting programmatic approach to sustainable land management in Tanzania. It also presents some opportunities that exist through Global Mechanism of the United Nations Convention to Combat Desertification, which promote actions leading to coordination, mobilization and channeling of financial resources to assist member countries to coordinate and sustain sustainable land management projects.

Compressors for Hyper-Sonic Engines —A Theoretical Study of Future Compressors for Hyper Sonic Engines  [PDF]
Christine Cherian
Advances in Aerospace Science and Technology (AAST) , 2018, DOI: 10.4236/aast.2018.34007
Abstract:
This paper is an eye opening to the new horizon of the design of operational Compressors in our jet engines. That are compressors usually perform an operation called isentropic process and which levitate the pressure and temperature to the optimum level which require for effective ignition. Basically, our compressors have several sets of blades to perform this function, more precisely saying Rotor and stator blades. Where rotor blade provides air molecule to push at very high velocity to the Stationary blade and when the air Enders to the Stator, the stator races its pressure to move on to the next stage. And we call this set of Stator and rotor as a stage ref [1]. However, in this work, I consider the geometry of the incoming air molecule and how it transforms its physical quantities such as Pressure and temperature ref [2]. For that I tie the concept of Thermodynamic and mechanics on the platform of Tensor analysis ref [3]. That is, I consider the quantities like Pressure, Temperature and rate of flow are their corresponding vector spaces and energy related quintets like heat, work as the scaling elements on the above vector space. And quantities such as entropy enthalpy and specific heat capacity are corresponding physics of it. Considering the advantages, one of the important advantages of this approach is the applicability of results of this work to the formulation of blade less compression Example: Ram and Scram jet engine. Again, the relevant upgrading which is essential for future hypersonic air crafts can achieve from this study and this will be a mile stone for bright air and space travel. To conclude, this approach will be a great transformation on the conventional idea for realization of compression for operational Scram and Ram jet engines ref [4] [5].
Trypanosoma vivax Infections: Pushing Ahead with Mouse Models for the Study of Nagana. I. Parasitological, Hematological and Pathological Parameters
Nathalie Chamond,Alain Cosson,Marie Christine Blom-Potar,Grégory Jouvion,Simon D'Archivio,Mathieu Medina,Sabrina Droin-Bergère,Michel Huerre,Sophie Goyard,Paola Minoprio
PLOS Neglected Tropical Diseases , 2010, DOI: 10.1371/journal.pntd.0000792
Abstract: African trypanosomiasis is a severe parasitic disease that affects both humans and livestock. Several different species may cause animal trypanosomosis and although Trypanosoma vivax (sub-genus Duttonella) is currently responsible for the vast majority of debilitating cases causing great economic hardship in West Africa and South America, little is known about its biology and interaction with its hosts. Relatively speaking, T. vivax has been more than neglected despite an urgent need to develop efficient control strategies. Some pioneering rodent models were developed to circumvent the difficulties of working with livestock, but disappointedly were for the most part discontinued decades ago. To gain more insight into the biology of T. vivax, its interactions with the host and consequently its pathogenesis, we have developed a number of reproducible murine models using a parasite isolate that is infectious for rodents. Firstly, we analyzed the parasitical characteristics of the infection using inbred and outbred mouse strains to compare the impact of host genetic background on the infection and on survival rates. Hematological studies showed that the infection gave rise to severe anemia, and histopathological investigations in various organs showed multifocal inflammatory infiltrates associated with extramedullary hematopoiesis in the liver, and cerebral edema. The models developed are consistent with field observations and pave the way for subsequent in-depth studies into the pathogenesis of T. vivax - trypanosomosis.
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