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Start Over Coverage 185-189

1. Anatomical and eco-physiological changes in leaves of couch-grass (Elymus repens L.), a temperate loess grassland species, after 7 years growth under elevated CO2 concentration

Creator:
Engloner, A. I., Kovács, D., Balogh, J., and Tuba, Z.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
mesophyll, net photosynthetic rate, phloem, sclerenchyma, stomatal conductance, stomatal density, tracheary, transpiration rate, and water use efficiency
Language:
Multiple languages
Description:
Leaf anatomy and eco-physiology of Elymus repens, a temperate loess grassland species, were determined after seven years of exposure to 700 μmol (CO2) mol-1 (EC). EC treatment resulted in significant reduction of stomatal density on both surfaces of couch-grass leaves. Thickness of leaves and that of the sclerenchyma tissues between the vessels and the adaxial surfaces, the area of vascular bundle, and the volumes of phloem and tracheary increased at EC while abaxial epidermis and the sclerenchyma layer between the vessel and the abaxial surface were thicker at ambient CO2 concentration (AC). Stomatal conductance and transpiration rates were lower in EC, while net CO2 assimilation rate considerably increased at EC exposure. Contents of soluble sugars and starch were higher in EC-treated couch-grass leaves than in plants grown at AC. and A. I. Engloner ... [et al.].
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Elektronová mikroskopie - zdroj inspirace ve výuce (nejen) středoškolské fyziky 2

Creator:
Vencelides, Petr and Jurmanová, Jana
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
mikroskopie, fyzika, microscopy, physics, 6, and 53
Language:
Czech and English
Description:
The article presents electron microscopy as a suitable source of inspiration for teaching physics at secondary school. Some specific examples explain the basic physical principles of these (sophisticated) devices. Today, electron microscopy is developing rapidly, and its inclusion in physics textbooks is highly desirable., Petr Vencelides, Jana Jurmanová., and Obsahuje bibliografické odkazy
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

4. Lékařská biofyzika, maligní melanom a životní prostředí

Creator:
Rosina, Jozef, Vránová, Jana, and Olefirenko, Kateřina
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
lékařská biofyzika, melanomy, životní prostředí, ultrafialové záření, medical biophysics, melanomas, ultraviolet radiation, 6, and 53
Language:
Czech and English
Description:
Část lékařské biofyziky studuje působení fyzikálních faktorů na zdraví člověka. Významným faktorem životního prostředí je ultrafialová složka slunečního záření, která hraje důležitou roli při vzniku a rozvoji maligního melanomu. Dalším významným rizikovým faktorem životního prostředí je degradace ozonové vrstvy, zejména ve stratosféře., There is a branch of medical biophysics studying the impact of physical factors on human health. The important environmental factor playing a significant role in formation and development of cutaneous melanoma is ultraviolet solar radiation. This risk factor is enhanced by the depletion of the ozone layer., Jozef Rosina, Jana Vránová, Kateřina Olefirenko., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

5. One-dimensional ZnO nanostructures

Creator:
Grym, Jan, Yatskiv, Roman, Vaniš, Jan, Černohorský, Ondřej, and Lorinčík, Jan
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
ZnO, nanorods, Schottky barrier, charge transport, and selective area epitaxy
Language:
Czech
Description:
An overview of recent activities of the group Synthesis and Characterization of Nanomaterials in the field of one-dimensional ZnO nanostructures is given. We briefly summarize general properties of ZnO and explain why one-dimensional semiconductors are useful. We describe the preparation, characterization, and application of graphite Schottky contacts on ZnO nanorod arrays and propose technological concepts to explain fundamental phenomena occurring in nanoscale contacts on ZnO nanorods. and Předkládáme přehled nedávných aktivit týmu Příprava a charakterizace nanomateriálů v oblasti jednodimenzionálních nanostruktur ZnO. Stručně shrnujeme obecné vlastnosti ZnO a vysvětlujeme, proč jsou jednodimenzionální polovodiče užitečné. Popisujeme přípravu, charakterizaci a aplikaci grafitových Schottkyho kontaktů na polích nanotyčinek ZnO a navrhujeme technologické koncepty k vysvětlení základních dějů odehrávajících se v nanokontaktech na nanotyčinkách ZnO.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public