141. |
- Johansson, Christian, et al.
(författare)
-
Printable rectifying device using Si-composite
- 2008
-
Ingår i: Electronics Letters. - : Institution of Engineering and Technology (IET). - 0013-5194 .- 1350-911X. ; 44:1, s. 53-55
-
Tidskriftsartikel (refereegranskat)abstract
- The R&D in finding low-cost manufacturing of electronics and electronic components is intense. One research route is aiming at roll-to-roll printing of organic electronics but the typically low mobility in organic semiconductors results in fundamental difficulties to fabricate, e.g., diodes for operation at high frequencies. A novel diode has instead been realised by screen-printing a silicon-powder composite with the intention to utilise the high mobility and the high operation frequency potential of silicon. The current against voltage (I-V) characteristics of the printed device reveal diode behaviour but so far with a too high ideality factor and resistance to be practically useful. By optimising device geometry, composite, and printing process low-cost printed, high frequency diodes (MHz-some GHz) may be viable.
|
|
142. |
|
|
143. |
|
|
144. |
|
|
145. |
|
|
146. |
|
|
147. |
- Karlsson, Ola
(författare)
-
Vad betyder brun och blåbrun i politikens värld?
- 2021
-
Annan publikation (populärvet., debatt m.m.)abstract
- Miljöpartiets Per Bolund och Sverigedemokraternas Jimmie Åkesson hade i SVT:s partiledardebatt 10 oktober 2021 olika uppfattningar om vad uttrycket blåbrun står för. Så vad betyder det i dag, och bör det stå med i ordlistor och ordböcker?
|
|
148. |
- Karlsson, Omar, et al.
(författare)
-
Washing machine ownership and girls' school attendance : a cross-sectional analysis of adolescents in 19 middle-income countries
-
Ingår i: Journal of Economic Inequality. - 1569-1721.
-
Tidskriftsartikel (refereegranskat)abstract
- Excessive work among adolescents may compromise educational development. Without home appliances, household work can take over 50 h a week and an additional 30 h when an infant is present. School-aged girls are often tasked with doing laundry, which is time-consuming and inflexible without a washing machine. We determined the association between washing machine ownership and school attendance among adolescents ages 10–19 years in 19 middle-income countries between 2000 and 2021 (N = 1,622,514). We controlled for socioeconomic and demographic characteristics, all neighborhood-level factors, and examined differences by sex, age, household wealth, and period. No relationship between washing machine ownership and school attendance was found in most countries: However, there was a substantial association for girls in Türkiye and a small to moderate association for girls in Egypt and Albania. In Türkiye, for example, girls living in households with a washing machine had 28% (95% CI 19, 37) greater school attendance compared to girls living in households which did not. No association was observed for boys. The results suggest that household ownership of a washing machine does generally not improve school attendance among girls, except possibly in specific contexts.
|
|
149. |
|
|
150. |
- Kettering, Melanie, et al.
(författare)
-
Antibiotics in the Chemical Communication of Fungi
- 2004
-
Ingår i: Zeitschrift fuer Naturforschung. Section C: A Journal of Biosciences. - 0939-5075. ; 59c:11/12, s. 816-823
-
Tidskriftsartikel (refereegranskat)abstract
- In dual cultures Oudemansiella mucida and Xerula melanotricha (basidiomycetes) react to the presence of living Penicillium notatum or P. turbatum with an increased production of strobilurin A (1) or X (2). P. notatum in turn reacts to the two basidiomycetes or their antibiotic strobilurin A alone with the production of N-(2-hydroxypropanoyl)-2-aminobenzoic acid amide (3) or chrysogine (4). P. melinii and P. urticae overgrow O. mucida due to complete resistance to strobilurin A. P. brevicompactum, P. citrinum, P. janczewskii and the other Penicillium strains are all sensitive but apparently do not induce O. mucida to produce the amounts of strobilurin A needed to inhibit their growth.
|
|