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1

Effect of diazepam on adrenal cortex stress reaction

100%
Beszczynska B., Siejka A.
Acta Biologica Cracoviensia. Series Zoologia
|
2003
|
tom 45
2

The role of membrane bound bicarbonate in stress reaction of photosynthetic apparatus of higher plants

86%
Podorvanov V. V., Polishchuk O. V.
Acta Physiologiae Plantarum
|
2007
|
tom 29
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nr 1 Suppl.
3

How “natural” training methods can affect equine mental state? A critical approach - a review

86%
Rozempolska-Rucinska I., Trojan M., Kosik E., Prochniak T., Gorecka-Bruzda A.
Animal Science Papers and Reports
|
2013
|
tom 31
|
nr 3
Among equestrians the “natural” training methods of horses are gaining widespread popularity due to their spectacular efficiency. Underlying philosophy of trainers - founders of different “natural horsemanship training” (NHT) schools, along with other not well documented statements includes argumentation of solely welfare- and human-friendly effects of NHT in the horse. The aim of this review was to screen scientific papers related to NHT to answer the question whether „natural” training methods may actually exert only positive effects upon equine mental state and human-horse relationship. It appears that NHT trainers may reduce stress and emotional tension and improve learning processes as they appropriately apply learning stimuli. Basing on revised literature it can be concluded that training is successful provided that [i] the strength of the aversive stimulus meets sensitivity of an individual horse, [ii] the aversive stimulus is terminated at a right moment to avoid the impression of punishment, and [iii] the animal is given enough time to assess its situation and make an independent decision in the form of adequate behavioural reaction.Neglecting any of these conditions may lead to substantial emotional problems, hyperactivity, or excessive fear in the horse-human relationship, regardless of the training method.However, we admit that the most successful NHT trainers reduce aversive stimulation to the minimum and that horses learn quicker with fear or stress reactions, apparently decreasing along with training process. Anyway, NHT should be acknowledged for absolutely positive role in pointing out the importance of proper stimulation in the schooling and welfare of horses.
4

Influence of diet on adrenal stress reaction

86%
Beszczynska B.
Acta Biologica Cracoviensia. Series Zoologia
|
2001
|
tom 43
5
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Content available

Energy flows in PSII as an alternative indicator of winter damages of wheat plants: a mass-scale approach

72%
Sasal M., Sniegowska K., Rapacz M.
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
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2013
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tom 94
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nr 3
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Influence of environmental changes on physiology and development of polar vascular plant

58%
Gielwanowska I., Pastorczyk M., Kellmann-Sopyla W.
Papers on Global Change
|
2011
|
nr 18
Polar vascular plants native to the Arctic and the Antarctic geobotanical zone have been growing and reproducing effectively under difficult environmental conditions, colonizing frozen ground areas formerly covered by ice. Our macroscopic observations and microscopic studies conducted by means of a light microscope (LM) and transmission electron microscope (TEM) concerning the anatomical and ultrastructural observations of vegetative and generative tissue in Cerastium arcticum, Colobanthus quitensis, Silene involucrata, plants from Caryophyllaceae and Deschampsia antarctica, Poa annua and Poa arctica, from Poaceae family. In the studies, special attention was paid to plants coming from diversity habitats where stress factors operated with clearly different intensity. In all examinations plants, differences in anatomy were considerable. In Deschampsia antarctica the adaxial epidermis of hairgrass leaves from a humid microhabitat, bulliform cells differentiated. Mesophyll was composed of cells of irregular shapes and resembled aerenchyma. The ultrastructural observations of mesophyll in all plants showed tight adherence of chloroplasts, mitochondria and peroxisomes, surface deformations of these organelles and formation of characteristic outgrowths and pocket concavities filled with cytoplasm with vesicles and organelles by chloroplasts. In reproduction biology of examined Caryophyllaceae and Poaceae plants growing in natural conditions, in the Arctic and in the Antarctic, and in a greenhouse in Olsztyn showed that this plant develops two types of bisexual flowers. Almost all ovules developed and formed seeds with a completely differentiated embryo both under natural conditions in the Arctic and the Antarctic and in a greenhouse in Olsztyn.
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