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2. Effects of flooding on susceptibility of Taxodium distichum L. seedlings to drought
- Creator:
- Elcan, J. M. and Pezeshki, S. R.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- baldcypress, dry mass, leaf, photosynthesis, redox potential, root, stem, stomatal conductance, transpiration rate, and wetlands
- Language:
- Multiple languages
- Description:
- Responses of baldcypress (Taxodium distichum) seedlings to soil moisture were studied to test the hypothesis that flooding may lead to seedling's higher susceptibility to drought. Treatments included a well-watered but drained control (C), continuously flooded (CF), control followed by drought (CD), and flooded followed by drought (FD). Gas exchange values revealed no significant effects on net photosynthetic rate (PN) in response to flooding. In contrast, after the onset of drought, PN was significantly reduced in CD and FD plants. Significant growth reductions under mild drought conditions indicated that baldcypress seedlings were drought sensitive. However, comparison of gas exchange rates and growth responses between CD and FD plants indicated that prior flooding had no detectable effect on subsequent sensitivity of baldcypress to drought. These findings explain baldcypress persistence in wetland habitats characterized by periodic flooding and mild drought. and J. M. Elcan, S. R. Pezeshki.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
3. História Mössbauerovho javu
- Creator:
- Miglierini, Marcel
- Format:
- print, bez média, and svazek
- Type:
- model:article and TEXT
- Subject:
- Mößbauer, Rudolf Ludwig, 1929-2011, jaderná fyzika, Mössbauerova spektroskopie, Mössbauerův jev, nuclear physics, Mössbauer spectroscopy, Mössbauer effect, 6, and 53
- Language:
- Czech
- Description:
- Článok je venovaný 45. výročiu objavenia Mössbauerovho javu. Uvádza historické súvislosti, které predchádzali objavu, ako aj genézu jeho vzniku a vytvorenie novej analytickej metódy Mössbauerovej spektrometrie. Stručne rekapituluje jej základné princípy, techniky a možné oblasti použitia, ako aj trendy rozvoja. and Marcel Miglierini.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
4. The nervous system of Polystoma indicum (Monogenea: Polystomatidae) as revealed by nonspecific esterase localization
- Creator:
- Dutta, M. and Tandon, V.
- Format:
- Type:
- model:internalpart and TEXT
- Subject:
- Polystoma indicum, Polystomatida, Monogenea, nervous system, and nonspecific esterases
- Language:
- English
- Description:
- Using the localization of nonspecific esterases, the nervous system of Polystoma indicum Diengdoh et Tandon, 1991 could be revealed in toto. The nervous system is bilaterally symmetrical. Cerebral ganglia, which are connected by a thick dorsal commissure, are present dorsal to the pharynx. From the cerebral ganglia arise five anterior pairs and four posterior pairs of nerve trunks. The anterior nerves and/or their fine branches join to form a conspicuous circumoral nerve ring complex. The posterior nerves unite in the opisthaptoral region to form two main haptoral nerves, the branches from which innervate the components of the opisthaptor. Presence of nerve cells is also revealed in association with the main nerves, more predominantly in the vicinity of the opisthaptoral suckers.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public