| 1. |
- Gürer, D., et al.
(författare)
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Women in Computing
- 2009
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Ingår i: Wiley Encyclopedia of Computer Science and Engineering. - Hoboken, NJ, USA : John Wiley & Sons. - 9780470050118 ; , s. 3099-3122
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 2. |
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| 3. |
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| 4. |
- Eriksson, L, et al.
(författare)
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An investigation of sensitivity limits in PET scanners
- 2007
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Ingår i: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT. - : Elsevier BV. - 0168-9002. ; 580:2, s. 836-842
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 5. |
- Unelius, C. Rikard, et al.
(författare)
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Comparisons of traps and lures for monitoring grass grub Costelytra zealandica
- 2008
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Ingår i: New Zealand Plant Protection. - : New Zealand Plant Protection Society. - 1175-9003 .- 1179-352X. ; 61, s. 215-221
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Tidskriftsartikel (refereegranskat)abstract
- Phenol the attractant pheromone of adult males of the native New Zealand grass grub Costelytra zealandica (White) is produced in the beetles as the result of bacterial degradation of tyrosine A lure consisting of a resin impregnated with phenol has been widely used to monitor male beetle flight activity The present formulation is highly attractive for the first week in the field but then loses activity rapidly A number of phenolcontaining formulations were tested to improve the lure A new formulation gave lower catches that were more stable with time producing data more suitable for population density estimation Phenylacetaldehyde a bacterial metabolite of phenylalanine was tested as a possible synergist to phenol Field results showed that this floral compound exhibited no behaviourallyactive properties to grass grubs when tested together with phenol Catches with water traps were compared with those in sticky delta and flat delta traps in two vineyards and in pasture Water traps caught four times more beetles
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| 6. |
- Johannesson, Henrik, et al.
(författare)
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Phase-specific gene expression underlying morphological adaptations of the dimorphic human pathogenic fungus, Coccidioides posadasii
- 2006
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Ingår i: Fungal Genetics and Biology. - : Elsevier BV. - 1087-1845 .- 1096-0937. ; 43:8, s. 545-559
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Tidskriftsartikel (refereegranskat)abstract
- Coccidioides posadasii is a dimorphic fungal pathogen that grows as a Wlamentous saprobe in the soil and as endosporulating spheruleswithin the host. To identify genes speciWc to the pathogenic phase of Co. posadasii, we carried out a large-scale study of gene expression intwo isolates of the species. From the sequenced Co. posadasii genome, we chose 1000 open reading frames to construct a 70-mer microarray.RNA was recovered from both isolates at three life-cycle phases: hyphae, presegmented spherules, and spherules releasing endospores.Comparative hybridizations were conducted in a circuit design, permitting comparison between both isolates at all three life-cyclephases, and among all life-cycle phases for each isolate. By using this approach, we identiWed 92 genes that were diVerentially expressedbetween pathogenic and saprobic phases in both fungal isolates, and 43 genes with consistent diVerential expression between the two parasiticdevelopmental phases. Genes with elevated expression in the pathogenic phases of both isolates included a number of genes thatwere involved in the response to environmental stress as well as in the metabolism of lipids. The latter observation is in agreement withprevious studies demonstrating that spherules contain a higher proportion of lipids than saprobic phase tissue. Intriguingly, we discoveredstatistically signiWcant and divergent levels of gene expression between the two isolates proWled for 64 genes. The results suggest thatincorporating more than one isolate in the experimental design oVers a means of categorizing the large collection of candidate genes thattranscriptional proWling typically identiWes into those that are strain-speciWc and those that characterize the entire species.
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| 7. |
- Lynch, S.A., et al.
(författare)
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Toward silicon-based lasers for terahertz sources
- 2006
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Ingår i: IEEE Journal of Selected Topics in Quantum Electronics. - 1077-260X .- 1558-4542. ; 12:6, s. 1570-1577
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Tidskriftsartikel (refereegranskat)abstract
- Producing an electrically pumped silicon-based laser at terahertz frequencies is gaining increased attention these days. This paper reviews the recent advances in the search for a silicon-based terahertz laser. Topics covered include resonant tunneling in p-type Si/SiGe, terahertz intersubband electroluminescence from quantum cascade structures, intersubband lifetime measurements in Si/SiGe quantum wells, enhanced optical guiding using buried suicide layers, and the potential for exploiting common impurity dopants in silicon such as boron and phosphorus to realize a terahertz laser. © 2006 IEEE.
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| 8. |
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| 9. |
- Singer, Andrew C, et al.
(författare)
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Meeting Report : Risk Assessment of Tamiflu Use Under Pandemic Conditions
- 2008
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Ingår i: Environmental Health Perspectives. ; 116:11, s. 1563-7
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Tidskriftsartikel (refereegranskat)abstract
- On 3 October 2007, 40 participants with diverse expertise attended the workshop Tamiflu and the Environment: Implications of Use under Pandemic Conditions to assess the potential human health impact and environmental hazards associated with use of Tamiflu during an influenza pandemic. Based on the identification and risk-ranking of knowledge gaps, the consensus was that oseltamivir ethylester-phosphate (OE-P) and oseltamivir carboxylate (OC) were unlikely to pose an ecotoxicologic hazard to freshwater organisms. OC in river water might hasten the generation of OC-resistance in wildfowl, but this possibility seems less likely than the potential disruption that could be posed by OC and other pharmaceuticals to the operation of sewage treatment plants. The workgroup members agreed on the following research priorities: a) available data on the ecotoxicology of OE-P and OC should be published ; b) risk should be assessed for OC-contaminated river water generating OC-resistant viruses in wildfowl ; c) sewage treatment plant functioning due to microbial inhibition by neuraminidase inhibitors and other antimicrobials used during a pandemic should be investigated ; and d) realistic worst-case exposure scenarios should be developed. Additional modeling would be useful to identify localized areas within river catchments that might be prone to high pharmaceutical concentrations in sewage treatment plant effluent. Ongoing seasonal use of Tamiflu in Japan offers opportunities for researchers to assess how much OC enters and persists in the aquatic environment.
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| 11. |
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| 12. |
- Zhao, Ming, et al.
(författare)
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Low-temperature molecular beam epitaxy growth of Si/SiGe THz quantum cascade structures on virtual substrates
- 2006
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Ingår i: Thin Solid Films. - : Elsevier BV. - 0040-6090. ; 508:1-2, s. 24-28
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Tidskriftsartikel (refereegranskat)abstract
- Si/SiGe quantum cascade structures containing superlattice up to 100 periods have been grown on SiGe virtual substrates by using solid-source molecular beam epitaxy at low temperature. The surface morphology and structural properties of the grown samples were characterized using various experimental techniques. It has been concluded that the structures were completely symmetrically strained with high crystalline quality, precise layer parameters, and excellent reproducibility. Electroluminescence was observed with peaked intensity at 3 THz at both 4 and 40 K, which agrees very well with expected interwell intersubband transition according to the design.
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