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Search Results: 1 - 10 of 89875 matches for " Irina I. Mizus "
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Visible line intensities of the triatomic hydrogen ion from experiment and theory
Annemieke Petrignani,Max H. Berg,Florian Grussie,Andreas Wolf,Irina I. Mizus,Oleg L. Polyansky,Jonathan Tennyson,Nikolai F. Zobov,Michele Pavanello,Ludwik Adamowicz
Physics , 2015, DOI: 10.1063/1.4904440
Abstract: The visible spectrum of H3+ is studied using high-sensitivity action spectroscopy in a cryogenic radiofrequency multipole trap. Advances are made to measure the weak ro-vibrational transitions from the lowest rotational states of H3+ up to high excitation energies providing visible line intensities and, after normalisation to an infrared calibration line, the corresponding Einstein $B$ coefficients. {\it Ab initio} predictions for the Einstein $B$ coefficients are obtained from a highly precise dipole moment surface of H3+ and found to be in excellent agreement, even in the region where states have been classified as chaotic.
On submanifolds with recurrent second fundamental form in spaces of constant curvature
Irina I. Bodrenko
Mathematics , 2008,
Abstract: The complete local classification and geometric description of n-dimensional submanifolds F with recurrent nonparallel second fundamental form in the spaces of constant curvature M(c) are obtained in this article.
Some properties of Kaehler submanifolds with recurrent tensor fields
Irina I. Bodrenko
Mathematics , 2010,
Abstract: The properties of Kaehler submanifolds with recurrent the second fundamental form in spaces of constant holomorphic sectional curvature are being studied in this article.
Role of Corporate Culture in Model of Logic Levels of Organization
Mariya А. Aleksandrova,Irina I. Potapova
European Researcher , 2012,
Abstract: The article deals with the level of corporate culture in a model of logic levels of the organization. The modern organization is influenced by the external factors, and therefore it should have the ability to form and accumulate potential for corporate culture in order to ensure a timely response to the external environment and effectively manage the operation and development of numerous elements and subsystems of the organization.
Extreme climatic events: impacts of drought and high temperature on physiological processes in agronomically important plants
Urs Feller,Irina I. Vaseva
Frontiers in Environmental Science , 2014, DOI: 10.3389/fenvs.2014.00039
Abstract: Climate models predict more frequent and more severe extreme events (e.g., heat waves, extended drought periods, flooding) in many regions for the next decades. The impact of adverse environmental conditions on crop plants is ecologically and economically relevant. This review is focused on drought and heat effects on physiological status and productivity of agronomically important plants. Stomatal opening represents an important regulatory mechanism during drought and heat stress since it influences simultaneously water loss via transpiration and CO2 diffusion into the leaf apoplast which further is utilized in photosynthesis. Along with the reversible short-term control of stomatal opening, stomata and leaf epidermis may produce waxy deposits and irreversibly down-regulate the stomatal conductance and non-stomatal transpiration. As a consequence photosynthesis will be negatively affected. Rubisco activase—a key enzyme in keeping the Calvin cycle functional—is heat-sensitive and may become a limiting factor at elevated temperature. The accumulated reactive oxygen species (ROS) during stress represent an additional challenge under unfavorable conditions. Drought and heat cause accumulation of free amino acids which are partially converted into compatible solutes such as proline. This is accompanied by lower rates of both nitrate reduction and de novo amino acid biosynthesis. Protective proteins (e.g., dehydrins, chaperones, antioxidant enzymes or the key enzyme for proline biosynthesis) play an important role in leaves and may be present at higher levels under water deprivation or high temperatures. On the whole plant level, effects on long-distance translocation of solutes via xylem and phloem and on leaf senescence (e.g., anticipated, accelerated or delayed senescence) are important. The factors mentioned above are relevant for the overall performance of crops under drought and heat and must be considered for genotype selection and breeding programs.
Second-order differential invariants of the rotation group O(n) and of its extensions: E(n), P(1,n), G(1,n)
W. I. Fushchych,Irina Yehorchenko
Mathematics , 2005,
Abstract: Functional bases of second-order differential invariants of the Euclid, Poincar\'e, Galilei, conformal, and projective algebras are constructed. The results obtained allow us to describe new classes of nonlinear many-dimensional invariant equations.
Increase of agro-industrial sector operating efficiency in Russia
Marina I. Zarubina,Irina I. Potapova
European Researcher , 2011,
Abstract: The article examines Russia’s current agricultural policy and agro-industrial sector government regulation trends, presents major instruments to increase its operating efficiency.
Application of prodigiosin as a colorant for polyolefines  [PDF]
Irina Ryazantseva, Irina Andreyeva
Advances in Biological Chemistry (ABC) , 2014, DOI: 10.4236/abc.2014.41004
Abstract: Serratia marcescens strain 9986 is a producer of prodigiosin used as a dye of polyolefines (polyethylene, ultratene). The biosynthesis of pigment was closely connected with controlled growth parameters. A prodigiosin yield 0.2 - 0.4 mg per l of culture medium in the batch culture under aerobic conditions was obtained. Prodigiosin was extracted from crude biomass treated by 0.1% of sodium dodecyl sulfate (SDS). This novel elaborated stage is necessary for thermostability a dye in polymer. The consumption of prodigiosin preparation is more economical in the technology of the coloration of polyolefines. The elaborated method has been manufactured for dyeing polyethylene by biological pigment-articles of the common use corresponding to the technological standard.
Molybdenum Carbide Nano-Powder for Production of Mo-99 Radionuclides  [PDF]
Vladimir D. Risovany, Konstantin V. Rotmanov, Genady I. Maslakov, Yury D. Goncharenko, Grigory A. Shimansky, Aleksandr I. Zvir, Irina M. Smirnova, Irina N. Kuchkina
World Journal of Nuclear Science and Technology (WJNST) , 2012, DOI: 10.4236/wjnst.2012.22010
Abstract: At present, there are two ways to produce 99Mo in a reactor: 1) fission process—from U fission product by reaction 235U (n, f) 99Mo and 2) activation process—by radiation capture reaction 98Mo (n, γ) 99Mo. This paper presents the results of experiments performed with molybdenum carbide nano-powder to produce 99Mo. These results show the implementation of the above idea in practice.
Apelin-12 improves metabolic and functional recovery of rat heart after global ischemia  [PDF]
Oleg I. Pisarenko, Valentin S. Shulzhenko, Yulia A. Pelogeykina, Irina M. Studneva, Denis N. Khatri
Health (Health) , 2010, DOI: 10.4236/health.2010.28137
Abstract: This work was designed to explore efficacy of apelin-12 (A-12) as a cardioprotective agent when given before ischemia or at reperfusion using the isolated working heart model. Hearts of male Wistar rats were subjected to 30-min stabilization period followed by 35-min global ischemia and 30-min reperfusion. A short-term infusion of Krebs-Henseleit buffer (KHB) con-taining A-12 (35, 70, 140, 280 or 560 ?M) was ap-plied prior to ischemia (A-12-I) or at onset of reperfusion (A-12-R). KHB infusion was used as control. A-12 infusions induced a dose-dependent increase in recovery of coronary flow, contractile and pump function during reperfu-sion, with the largest augmentation of these indices in the A-12-I group. Both A-12 groups exhibited a significant reduction of LV diastolic pressure rise during reperfusion compared with control. Enhanced functional recovery in the A-12-I group was combined with a decrease in LDH leakage in perfusate on early reperfusion (by 36% vs. control, p < 0.05). Preischemic infusion of 140 ?M A-12 markedly increased myocardial ATP content, enhanced preservation of the total adenine nucleotide pool and improved recovery of the energy charge in reperfused hearts. There was a trend towards increase in myocardial phosphocreatine by the end of re- perfusion in the A-12-I group; however this benefit did not reach statistical significance. At the end of reperfusion, myocardial lactate and lactate/pyruvate ratio were on average 5-fold lower in A-12-I treated hearts compared with control ones and did not differ significantly from the initial values. Therefore, improved cardiac dysfunction after I/R injury and less cell mem-brane damage induced by A-12 are associated with maintaining high energy phosphates, particularly ATP, in reperfused myocardium. Changes in energy metabolism may play a role in mechanisms of cardioprotection afforded by A-12 during I/R stress.
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