oalib

OALib Journal期刊

ISSN: 2333-9721

费用：99美元

投稿

时间不限

( 2673 )

( 2672 )

( 2454 )

( 2208 )

自定义范围…

匹配条件： “ G. Szumi o” ，找到相关结果约339324条。
列表显示的所有文章，均可免费获取
第1页/共339324条
每页显示 条
Effect of new lines of winter wheat on microbiological activity in Luvisol
S. Jezierska-Tys , L. Rachoń , A. Rutkowska , G. Szumi o
International Agrophysics , 2012, DOI: 10.2478/v10247-012-0005-y
Abstract: The study presented in this paper was conducted under the conditions of a field experiment. Microbiological analyses were made at various stages of winter wheat plants development ie heading, milk ripeness and full ripeness. The objective of the study was to acquire knowledge on the effect of cultivation of various lines of winter wheat on the numbers of bacteria and fungi with proteolytic capabilities, on protease and urease activity, and on the rate of the processes of ammonification and nitrification. The results of conducted study demonstrated that the number of proteolytic bacteria and fungi, as well as the activity of protease and urease, and the intensity of ammonification and nitrification processes in soil depended on both the development stage and cultivated line of winter wheat.
Two Models for the Homotopy Theory of Cocomplete Homotopy Theories
Karol Szumi？o
Mathematics , 2014,
Abstract: We prove that the homotopy theory of cofibration categories is equivalent to the homotopy theory of cocomplete quasicategories. This is achieved by presenting both homotopy theories as fibration categories and constructing an explicit equivalence between them.
Quasicategories of Frames of Cofibration Categories
Chris Kapulkin,Karol Szumi？o
Mathematics , 2015,
Abstract: We show that the quasicategory of frames of a cofibration category, introduced by the second-named author, is equivalent to its simplicial localization.
The occurrence of fungi on roots and stem bases of common wheat (Triticum aestivum ssp. vulgare L.) and durum wheat (Triticum durum Desf.) grown under two levels of chemical protection
Irena Kiecana,Leszek Rachoń,El？bieta Mielniczuk,Grzegorz Szumi？o
Acta Agrobotanica , 2011, DOI: 10.5586/aa.2011.036
Abstract: Investigations were carried out in 2007-2009 on the plots of the Felin Experimental Station belonging to the University of Life Science in Lublin. The studies comprised two cultivation lines of durum wheat (Triticum durum L.): STH 716 and STH 717, as well as the 'Tonacja' cultivar of common wheat (T. aestivum ssp. vulgare L.). Two levels of chemical protection were applied in the cultivation: minimal and complex protection. Infection of wheat roots and stem bases was recorded in each growing season at hard dough stage (87 in Tottman's scale, 1987). After three years of study, the mean disease indexes for the analyzed wheat genotypes in the experimental treatment with minimal protection were 31.13, 30.43 and 38.83 for, respectively, the 'Tonacja' cultivar and the cultivation lines of T. durum STH 716 and STH 717. In the experimental combination with complex protection, after three years of study the disease indexes ranged from 25.26 (T. durum STH 716) to 30.83 (T. durum STH 717). The results of mycological analysis of diseased plants showed that Fusarium spp., especially F. culmorum, F. avenaceum as well as Bipolaris sorokiniana and Rhizoctonia solani, caused root rot and necrosis of wheat stem bases. The analyzed chemical protection levels did not significantly influence grain yield of the investigated genotypes of T. aestivum and T. durum.
Mukozektomia endoskopowa w leczeniu wczesnego raka o dka - opis przypadku
Krzysztof Zinkiewicz,Tomasz Skoczylas,Justyna Szumi？o,Witold Zgodziński
Polish Gastroenterology , 2003,
Abstract: Przedstawiamy opis przypadku radykalnego leczenia wczesnego raka o dka metod endoskopowej mukozektomii u 78-letniego pacjenta. Zabieg wykonano bez powik ań zgodnie z procedur japońsk stosowan w National Cancer Center w Tokio.
Effect of diet on the capacity to remove mercury from the body of a penguin (Spheniscus demersus) living in the ZOO
Falkowska L.,Szumi？o E.,Hajdryh J.,Grajewska A.
E3S Web of Conferences , 2013, DOI: 10.1051/e3sconf/20130112002
Abstract: Birds due to its position in the trophic chain are good monitors of the marine environment in terms of mercury contamination. For the proper interpretation of results it is necessary to know both the processes of accumulation of this metal in their bodies and processes of elimination. Research involving the Penguin (Spheniscus demersus) living in a ZOO has identified the relationship between diet and the amount of mercury removed from the penguin body in guano, feathers, and in the case of females with eggs. The research was conducted in years 2009-2011. Total mercury was determined in elements responsible for detoxification and in the diet of penguins. Mercury concentration was determined by atomic absorption spectrophotometry with AMA-254 automatic mercury analyzer. The highest average mercury concentrations were determined in feathers: 1781.12 ngHg g 1d.w., lower in eggs: 950.88 ngHg g 1 dry weight (d.w.). and in a guano: 139.18 ngHg g 1. In food, herrings caught in the southern Baltic, Hg concentrations were relatively low with averaged value 31.81 ngHg g 1d.w.
Morphology and physiology of the epiphyseal growth plate.
Franciszek Burdan,Justyna Szumi？o,Agnieszka Korobowicz,Rabia Farooquee
Folia Histochemica et Cytobiologica , 2009, DOI: 10.5603/4381
Abstract: The epiphyseal growth plate develops from the cartilaginous-orientated mesenchymal cells that express SOX family genes. This multilayer structure is formed by the proliferation and hypertrophy of cells that synthesize the extracellular matrix composed of collagen (mainly type II, IX, X, XI) and proteoglycans (aggrecan, decorin, annexin II, V and VI). The resting zone is responsible for protein synthesis and maintaining a germinal structure. In the proliferative zone, cells rapidly duplicate. The subsequent morphological changes take place in the transformation zone, divided into the upper and lower hypertrophic layers. In the degenerative zone, the mineralization process becomes intensive due to increased release of alkaline phosphate, calcium and matrix vesicles by terminally differentiated chondrocytes and some other factors e.g., metaphyseal ingrowth vessels. At this level, as well as in the primary and secondary spongiosa zones, chondrocytes undergo apoptosis and are physiologically eliminated. Unlike adult cartilage, in fetal and early formed growth plates, unusual forms such as authophagal bodies, paralysis and dark chondrocytes were also observed. Their ultrastructure differs greatly from apoptotic and normal cartilage cells. Chondrocyte proliferation and differentiation are regulated by various endocrine, paracrine, and autocrine agents such as growth, thyroid and sex hormones, beta-catenin, bone morphogenetic proteins, insulin-like growth factor, iodothyronine deiodinase, leptin, nitric oxide, transforming growth factor beta and vitamin D metabolites. However, the most significant factor is parathyroid hormone-related protein (PTHrP) which is synthesized in the perichondrium by terminally differentiated chondrocytes. Secondary to activation of PTH/PTHrP receptors, PTHrP stimulates cell proliferation by G protein activation and delays their transformation into prehypertrophic and hypertrophic chondrocytes. When proliferation is completed, chondrocytes release Indian hedgehog (Ihh), which stimulates PTHrP synthesis via a feedback loop. Any disturbances of the epiphyseal development and its physiology result in various skeletal abnormalities known as dysplasia.
Adjuvant Radiochemotherapy with a 23-Month Overall Survival Time in a Patient after a Surgery due to Splenic Hemangiosarcoma Rupture: A Case Report with the Literature Review
D. Surdyka,I. Pa？nik,J. Szumi？o,L. Grzybowska-Szatkowska,M. Bilska,M. Bilski,P. Cisek,P. Korona
- , 2018, DOI: 10.1155/2018/8672407
Abstract:
Non-integrability of flail triple pendulum
Maria Przybylska,Wojciech Szumiński
Physics , 2012, DOI: 10.1016/j.chaos.2013.04.008
Abstract: We consider a special type of triple pendulum with two pendula attached to end mass of another one. Although we consider this system in the absence of the gravity, a quick analysis of of Poincar\'e cross sections shows that it is not integrable. We give an analytic proof of this fact analysing properties the of differential Galois group of variational equation along certain particular solutions of the system.
Non-integrability of restricted double pendula
Tomasz Stachowiak,Wojciech Szumiński
Physics , 2015, DOI: 10.1016/j.physleta.2015.09.052
Abstract: We consider two special types of double pendula, with the motion of masses restricted to various surfaces. In order to get quick insight into the dynamics of the considered systems the Poincar\'e cross sections as well as bifurcation diagrams have been used. The numerical computations show that both models are chaotic which suggest that they are not integrable. We give an analytic proof of this fact checking the properties of the differential Galois group of the system's variational equations along a particular non-equilibrium solution.
第1页/共339324条
每页显示 条


Home
Copyright © 2008-2020 Open Access Library. All rights reserved.