| 1. |
- Sodergren, Erica, et al.
(författare)
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The genome of the sea urchin Strongylocentrotus purpuratus.
- 2006
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Ingår i: Science. - : American Association for the Advancement of Science (AAAS). - 1095-9203 .- 0036-8075. ; 314:5801, s. 941-52
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Tidskriftsartikel (refereegranskat)abstract
- We report the sequence and analysis of the 814-megabase genome of the sea urchin Strongylocentrotus purpuratus, a model for developmental and systems biology. The sequencing strategy combined whole-genome shotgun and bacterial artificial chromosome (BAC) sequences. This use of BAC clones, aided by a pooling strategy, overcame difficulties associated with high heterozygosity of the genome. The genome encodes about 23,300 genes, including many previously thought to be vertebrate innovations or known only outside the deuterostomes. This echinoderm genome provides an evolutionary outgroup for the chordates and yields insights into the evolution of deuterostomes.
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| 2. |
- Alzari, Pedro M., et al.
(författare)
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Implementation of semi-automated cloning and prokaryotic expression screening : the impact of SPINE
- 2006
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Ingår i: Acta Crystallographica Section D. - 0907-4449 .- 1399-0047. ; 62, s. 1103-1113
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Tidskriftsartikel (refereegranskat)abstract
- The implementation of high- throughput ( HTP) cloning and expression screening in Escherichia coli by 14 laboratories in the Structural Proteomics In Europe ( SPINE) consortium is described. Cloning efficiencies of greater than 80% have been achieved for the three non- ligation- based cloning techniques used, namely Gateway, ligation- indendent cloning of PCR products ( LIC- PCR) and In- Fusion, with LIC- PCR emerging as the most cost- effective. On average, two constructs have been made for each of the approximately 1700 protein targets selected by SPINE for protein production. Overall, HTP expression screening in E. coli has yielded 32% soluble constructs, with at least one for 70% of the targets. In addition to the implementation of HTP cloning and expression screening, the development of two novel technologies is described, namely library- based screening for soluble constructs and parallel small- scale high- density fermentation.
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| 3. |
- Krebs, Frederik C, et al.
(författare)
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A round robin study of flexible large-area roll-to-roll processed polymer solar cell modules
- 2009
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Ingår i: SOLAR ENERGY MATERIALS AND SOLAR CELLS. - : Elsevier BV. - 0927-0248. ; 93:11, s. 1968-1977
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Tidskriftsartikel (refereegranskat)abstract
- A round robin for the performance of roll-to-roll coated flexible large-area polymer solar-cell modules involving 18 different laboratories in Northern America, Europe and Middle East is presented. The study involved the performance measurement of the devices at one location (Riso DTU) followed by transportation to a participating laboratory for performance measurement and return to the starting location (Riso DTU) for re-measurement of the performance. It was found possible to package polymer solar-cell modules using a flexible plastic barrier material in such a manner that degradation of the devices played a relatively small role in the experiment that has taken place over 4 months. The method of transportation followed both air-mail and surface-mail paths.
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| 4. |
- Almeida, Teresa, et al.
(författare)
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Isc1p plays a key role in hydrogen peroxide resistance and chronological lifespan through modulation of iron levels and apoptosis.
- 2008
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Ingår i: Molecular biology of the cell. - 1939-4586. ; 19:3, s. 865-76
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Tidskriftsartikel (refereegranskat)abstract
- The inositolphosphosphingolipid phospholipase C (Isc1p) of Saccharomyces cerevisiae belongs to the family of neutral sphingomyelinases that generates the bioactive sphingolipid ceramide. In this work the role of Isc1p in oxidative stress resistance and chronological lifespan was investigated. Loss of Isc1p resulted in a higher sensitivity to hydrogen peroxide that was associated with an increase in oxidative stress markers, namely intracellular oxidation, protein carbonylation, and lipid peroxidation. Microarray analysis showed that Isc1p deficiency up-regulated the iron regulon leading to increased levels of iron, which is known to catalyze the production of the highly reactive hydroxyl radicals via the Fenton reaction. In agreement, iron chelation suppressed hydrogen peroxide sensitivity of isc1Delta mutants. Cells lacking Isc1p also displayed a shortened chronological lifespan associated with oxidative stress markers and aging of parental cells was correlated with a decrease in Isc1p activity. The analysis of DNA fragmentation and caspase-like activity showed that Isc1p deficiency increased apoptotic cell death associated with oxidative stress and aging. Furthermore, deletion of Yca1p metacaspase suppressed the oxidative stress sensitivity and premature aging phenotypes of isc1Delta mutants. These results indicate that Isc1p plays an important role in the regulation of cellular redox homeostasis, through modulation of iron levels, and of apoptosis.
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| 5. |
- Antikainen, Riitta L., et al.
(författare)
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Trends in the prevalence, awareness, treatment and control of hypertension: the WHO MONICA Project
- 2006
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Ingår i: European Journal of Cardiovasclar Prevention & Rehabilitation. - 1741-8267. ; 13:1, s. 13-29
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To describe the secular changes in the prevalence, awareness, treatment and control of hypertension. DESIGN: Two independent cross-sectional population surveys using standardized methods conducted between the early 1980s and mid-1990s. SETTING: Twenty-four geographically defined populations of the WHO MONICA Project. PARTICIPANTS: Randomly selected men and women aged 35-64 years. The total number of participants was 69 907. MAIN OUTCOME MEASURES: Two definitions of hypertension were used: 160/95 mmHg or above and 140/90 mmHg or above for systolic or diastolic blood pressure. Subjects on antihypertensive drug treatment were considered to be hypertensive regardless of their blood pressure. Treated subjects whose measured blood pressure level was less than 160/95 or 140/90 mmHg according to the two definitions, respectively, were considered to be adequately treated. RESULTS: The age-adjusted prevalence of hypertension decreased in most and increased in only a few populations. For both definitions of hypertension, the proportion of hypertensive subjects who were aware of their condition increased in three-quarters of the male populations and in two-thirds of the female populations. Furthermore, the proportion of hypertensive individuals on antihypertensive drug treatment increased in three-quarters of the populations. In the final survey, hypertension tended to be better treated and controlled in women than in men. Nevertheless, a large proportion of patients receiving antihypertensive drug therapy still had inadequately controlled blood pressure levels. CONCLUSION: Although awareness and treatment of hypertension according to the data obtained during the late 1980s to the mid-1990s increased in several populations, the effectiveness of antihypertensive treatment showed the continuing need for improvements.
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| 6. |
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| 7. |
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| 8. |
- Garcia, Jose A., et al.
(författare)
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Nonideality sources and implementation considerations in polar transmitters
- 2009
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Ingår i: International Journal of Microwave and Wireless Technologies. - 1759-0787 .- 1759-0795. ; 1:2, s. 109-116
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Tidskriftsartikel (refereegranskat)abstract
- In this paper, the main nonidealities appearing in polar transmitters will be addressed, together with several implementation considerations. Special attention will be paid to the role of AM modulation nonlinearity and parasitic AM-to-PM conversion, once architecture mechanisms such as time-delay mismatch between branches or limited bandwidth in the amplitude path are controlled. The device limiting factors for a highly efficient switched mode operation and a linear amplitude modulation will be identified. Some circuit design and implementation guidelines for the RF modulating stage and the envelope amplifier will be discussed, to finish with system-level analysis considerations under two-tone and real communication signal excitations.
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| 9. |
- Garcia, J.A., et al.
(författare)
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Nonideality Sources and Implementation Considerations in Polar Transmitters
- 2008
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Ingår i: Proc. European Microwave Association (EuMA), 2008.
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Konferensbidrag (refereegranskat)abstract
- In this paper, the main nonidealities appearing in polar transmitters will be addressed, together with several implementation considerarions. Special attention will be paid to the role of AM modulation nonlinearity and parasitic AM-to-PM conversion, once architecture mechanisms as time-delay mismatch between branches or limited bandwidth in the amplitude path are controlled. The device limiting factors for a highly efficient switched mode operation and a linear amplitude modulation will be identified. Some circuit design and implementation guidelines for the RF modulating stage and the envelope amplifier will be discussed, to finish with system level analysis considerations under two-tone and real communication signal excitations.
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| 10. |
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