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Start Over Coverage 123-126

3. Effect of elevated CO2 on nocturnal malate accumulatíon in the CAM species Tillandsia ionantha and Crassula arborescens

Creator:
Nowak, E.J. and Martin, C.E.
Format:
print
Type:
model:internalpart and TEXT
Language:
Multiple languages
Description:
The effect of elevated CO2 on ovemight malate accumulatíon in the CAM epiphyte Tillandsia ionantha and the CAM terrestrial species Crassula arborescens was compared. Both species showed an increase in nocturnal accumulatíon of malate with increasing CO2 concentrations. This study is the first to show an increase in nighttime malate accumulatíon with increasing levels of CO2 at near-ambient concentrations in a CAM plant. The results indicate that some CAM plants can respond to increasing levels of CO2 in the atmosphere, potentíally leading to an increase in productívity.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

5. Návrh předsádky objektivu pro zařízení OptoNS

Creator:
Pintr, Pavel and Rail, Zdeněk
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
conversion lens, spot diagram, MTF, optical design, předsádka objektivu, modulační přenosová MTF funkce, and optický design
Language:
Czech
Description:
Our customer uses a classical commercial objective with a 200mm focal length for a detection of shape of Taylor’s cone. This system displays a scene with the 23mm horizontal size and cannot show a scene with required details. The commercial solution is not available for the long (550 mm) working distances. We proposed two optical solutions of conversion lens and the one solution of a main objective. These optical solutions should fulfill the required optical parameters. and Pro vyhodnocení detailů (tvar Taylorova kuželu) se využívá komerční objektiv o ohniskové vzdálenosti 200 mm. Tento systém je schopen zobrazit scénu v horizontální rovině o velikosti 23 mm, ale nemá dostatečnou rozlišovací schopnost. Komerční předsádky pro pracovní vzdálenost 550 mm se běžně nevyrábějí, a proto předkládáme návrh možných řešení předsádky komerčního objektivu, který bude splňovat požadované parametry. V článku věnujeme pozornost tříčočkovému a čtyřčočkovému řešení předsádky komerčního objektivu. Na závěr jsme navrhli i kompletní hlavní objektiv splňující parametry požadované zákazníkem.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

6. Photosynthesis, transpiration, and water use efficiency in two divergent Leymus chinensis populations from Northeast China

Creator:
Wang, R. Z. and Gao, Q.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
grassland, physiological differences, and plant water relations
Language:
Multiple languages
Description:
The net photosynthetic rate (PN), transpiration rate (E), and water use efficiency (WUE) of two divergent Leymus chinensis populations from the grassland region of Northeast China were compared. The two populations experienced the similar habitats, but differed in leaf colour, stomata numbers, and chlorophyll contents. The leaf PN for the grey-green (GG) population was greater than that for the yellow-green (YG) population, while the leaf E for GG population was lower than that for the YG population. The greater WUE for the GG population suggests that this type is more able to maintain higher PN under drought and is more fit for the rangeland use in this climate region. and R. Z. Wang, Q. Gao.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public