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Microalgae improve the Photosynthetic Performance of Rice Seedlings(Oryza sativa L.)under Physiological Conditions and Cadmium Stress

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Phyton-international Journal of Experimental Botany 2022年第7期91卷 1365-1380页

作者： Ekaterina Yotsova Martin Stefanov Georgi Rashkov Margarita Kouzmanova Anelia Dobrikova Emilia apostolova institute of Biophysics and Biomedical Engineering Bulgarian Academy of SciencesSofiaBulgaria Department of Biophysics and Radiobiology Biological FacultySofia UniversitySofiaBulgaria

The aim of this study was to assess the impact of the microalgae Chlorella vulgaris on the rice seedlings at physiological conditions and under cadmium(Cd)*** examined the effects of *** in the nutrient solution on rice seedlings grown hydroponically in the presence and the absence of 150μM CdCl2,using the low(77 K)temperature and pulse amplitude modulated(PAM)chlorophyll fluorescence,P700 photooxidation measurements,photochemical activities of both photosystems,kinetic parameters of oxygen evolution,oxidative stress markers(MDA,H_(2)O_(2) and proline),pigment content,growth parameters and Cd *** revealed that the application *** not only stimulates growth and improves the functions of photosynthetic apparatus under physiological conditions,but also reduces the toxic effect of Cd on rice ***,the presence of the green microalgae in the nutrient solution of the rice seedlings during Cd exposure,signifi-cantly improved the growth,photochemical activities of both photosystems,the kinetic parameters of the oxygen-evolving reactions,pigment content and decreased lipid peroxidation,H_(2)O_(2) and proline *** showed that the alleviation of Cd-induced effects in rice seedlings is a result of the Cd sorption by microalgae,as well as the reduced Cd accumulation in the roots and its translocation from the roots to the shoots.

关键词： Chlorella vulgaris growth parameters low temperature chlorophyll fluorescence PAM chlorophyll fluorescence photosynthesis rice stress markers

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Prognostic impact of inflammatory and nutritional biomarkers in pancreatic cancer

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World Journal of Clinical Oncology 2025年第1期16卷 5-9页

作者： Macarena Teja María i Garrido Abrahams Ocanto Felipe Counago Department of Radiation Oncology GenesisCare-San Francisco de Asís University HospitalMadrid 28002Spain Department of Radiation Oncology GenesisCare-Vithas La Milagrosa University HospitalMadrid 28010Spain National Director GenesisCare SpainMadrid 28043Spain Department of Medicine School of MedicineHealth and SportEuropean University of MadridMadrid 28670Spain

Pancreatic cancer is usually associated with a poor *** is the main curative treatment but pancreatic operations are aggressive and new tools that help clinicians to predict surgical and prognostic outcomes are *** et al recently published a retrospective,single centre cohort study evaluating the impact of seven nutritional and inflammatory markers in pancreatic cancer surgical patients:The albumin-to-globulin ratio,prognostic nutritional index(PNi),systemic immune-inflammation index(Sii),neutrophil-to-lymphocyte ratio(NLR),platelet-to-lymphocyte ratio(PLR),nutritional risk index,and the geriatric nutritional risk index.A significant correlation was found between the PNi,Sii,NLR,and PLR and a hospital discharge of less than 15 *** a univariable analysis,PNi,Sii,NLR and PLR were significantly related to recurrence-free survival and,in a multivariable analysis PNi was associated with overall *** meta-analyses corroborate the results in terms of prognosis but individual studies are discordant on their ***,the cut-off values for these markers vary significantly between studies and there are no clinical trials comparing them to identify the most relevant *** are limitations when implementing nutritional and inflammatory biomarkers into clinical practice and further studies are needed in order to answer these questions.

关键词： inflammatory biomarkers Nutritional biomarkers Pancreatic cancer Prognosis Surgical complications

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Antiferroelectricity in ZrO2and Ferroelectricity in Zr, Al, La Doped HfO2Nanoparticles

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Advances in Materials Physics and Chemistry 2020年第2期10卷 27-38页

作者： A. T. Apostolov i. N. apostolova J. M. Wesselinowa University of Architecture Civil Engineering and Geodesy Sofia Bulgaria University of Forestry Sofia Bulgaria University of Sofia Sofia Bulgaria

The dependence of the polarization P in Hf1-xZrxO2 nanoparticles on electric field, dopant concentration x, size and temperature are studied using the transverse ising model and the Green’s function method. Pure ZrO2 shows at high electric fields an antiferroelectric behavior. Pure HfO2 is a linear dielectric in the monoclinic phase. With increasing ZrO2 content the of HZO shows a ferroelectric behavior. The composition dependence x of the remanent polarization Pr(x)?has a maximum for x = 0.5. For x = 0, pure HfO2, and x = 1, pure ZrO2, Pr=0.?P increases with decreasing HZO nanoparticle size. The influence of Al and La doping on Pr?in HfO2 nanoparticles is also studied. The exhibiting of the ferroelectricity in ion doped HfO2 is due to a phase transformation and to an internal strain effect. The observed results are in good qualitative agreement with the experimental data.

关键词： ZrO2 Nanoparticles Zr Al La Doped HfO2 Nanoparticles Electric Properties Microscopic Model Green’s Function

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One-range addition theorems for generalized integer and noninteger μ Coulomb,and exponential type correlated interaction potentials with hyperbolic cosine in position,momentum,and four-dimensional spaces

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Chinese Physics B 2012年第6期21卷 137-140页

作者： i.i.Guseinov Department of Physics Faculty of Arts and SciencesOnsekiz Mart UniversityCanakkaleTurkey

The formulae are established in position,momentum,and four-dimensional spaces for the one-range addition theorems of generalized integer and noninteger μ Coulomb,and exponential type correlated interaction potentials with hyperbolic cosine（GCTCP and GETCP HC）.These formulae are expressed in terms of one-range addition theorems of complete orthonormal sets of Ψα-exponential type orbitals（Ψ α-ETO）,α-momentum space orbitals（α-MSO）,and zα-hyperspherical harmonics（zα-HSH） *** one-range addition theorems obtained can be useful in the electronic structure calculations of atoms and molecules when the GCTCP and GETCP HC in position,momentum,and four-dimensional spaces are employed.

关键词： correlated interaction potentials one-range additional theorems complete orthonormalsets of orbitals overlap integrals

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Size-dependent thermal stresses in the core–shell nanoparticles

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Chinese Physics B 2013年第12期22卷 483-490页

作者： Astefanoaei i Dumitru i Stancu Al Faculty of Physics "Alexandru Ioan Cuza" University of Iasi

The thermal stress in a magnetic core–shell nanoparticle during a thermal process is an important parameter to be known and controlled in the magnetization process of the core–shell system. in this paper we analyze the stress that appears in a core–shell nanoparticle subjected to a cooling process. The external surface temperature of the system, considered in equilibrium at room temperature, is instantly reduced to a target temperature. The thermal evolution of the system in time and the induced stress are studied using an analytical model based on a time-dependent heat conduction equation and a differential displacement equation in the formalism of elastic displacements. The source of internal stress is the difference in contraction between core and shell materials due to the temperature change. The thermal stress decreases in time and is minimized when the system reaches the thermal equilibrium. The radial and azimuthal stress components depend on system geometry, material properties, and initial and final temperatures. The magnitude of the stress changes the magnetic state of the core–shell system. For some materials, the values of the thermal stresses are larger than their specific elastic limits and the materials begin to deform plastically in the cooling process. The presence of the induced anisotropy due to the plastic deformation modifies the magnetic domain structure and the magnetic behavior of the system.

关键词： thermal stresses thermal equilibrium core–shell particle

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Unified treatment of one-range addition theorems for integer and non-integer n-STO, -GTO and -generalized exponential type orbitals with hyperbolic cosine in position, momentum and four-dimensional spaces

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Chinese Physics B 2012年第9期21卷 176-178页

作者： i. i. Guseinov Department of Physics Faculty of Arts and Sciences Onsekiz Mart University

Simpler formulas are derived for one-range addition theorems for the integer and noninteger n generalized ex- ponential type orbitals, momentum space orbitals, and hyperspherical harmonics with hyperbolic cosine （GETO HC, GMSO HC, and GHSH HC） in position, momentum and four-dimensional spaces, respectively. The final results are expressed in terms of one-range addition theorems of complete orthonormal sets of Ca-exponential type orbitals, Ca- momentum space orbitals and za-hyperspherical harmonics. We notice that the one-range addition theorems for integer and noninteger n-Slater type orbitals and Gaussian type orbitals in position, momentum and four dimensional spaces are special cases of GETO HC, GMSO HC, and GHSH HC. The theorems presented can be useful in the accurate study of the electronic structure of atomic and molecular systems.

关键词： electronic structure generalized exponential type orbitals one-range addition theorems,Hartree-Fock-Roothaan equations

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Theoretical Study of the Multiferroic Behavior of the Magnetic Relaxor Ferroelectric CdCr2S4

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Advances in Materials Physics and Chemistry 2018年第12期8卷 459-467页

作者： Angel T. Apostolov iliana N. apostolova Julia M. Wesselinowa Department of Physics Faculty of Hydrotechnics University of Architecture Civil Engineering and Geodesy Sofia Bulgaria Faculty of Forest industry University of Forestry Sofia Bulgaria Department of Physics University of Sofia Sofia Bulgaria

Using a microscopic model and the replica method as well as the Green’s function theory, we have investigated the relaxor and multiferroic behavior of CdCr2S4. The magnetization, the remanent polarization Pr and the real part of the dielectric function are studied theoretically as a function of temperature, with and without a magnetic field, respectively. The magnetization and the polarization exist together below the magnetic phase transition temperature. Pr decreases whereas increases and the peak shifts to smaller temperature values with increasing magnetic field h. Moreover, the temperature and electric field E dependence of the magnetization M is also discussed. A kink is observed around the ferroelectric transition temperature. The kink is deeper for stronger electric fields and anharmonic spin-phonon interactions.

关键词： Multiferroic CdCr2S4 Microscopic Model Polarization Dielectric Function

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One-Range Addition Theorems in Terms of ψ^α -ETOs for STOs and Coulomb-Yukawa Like Correlated interaction Potentials of integer and Noninteger indices

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Chinese Physics Letters 2008年第12期25卷 4240-4243页

作者： i. i. Guseinov Department of Physics Faculty of Arts and Sciences Onsekiz Mart University Canakkale Turkey

The expansion formulas in terms of complete orthonormal sets of ψ^α -exponential type orbitals are established for the Slater type orbitals and Coulomb-Yukawa-like correlated interaction potentials of integer and noninteger indices. These relations are used in obtaining their unsymmetrical and symmetrical one-range addition theorems. The final results are especially useful in the calculations of multicentre multielectron integrals occurring when Hartree-Fock-Roothaan and explicitly correlated methods are employed.

关键词： orthonormal set expansion formula

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The effect of forced oscillations on the kinetics of wave drift in an inhomogeneous plasma

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Plasma Science and Technology 2020年第12期22卷 8-19页

作者： V i EROFEEV institute of Automation&Electrometry of the Siberian Branch of the Russian Academy of Sciences 1 Koptyug Prosp.630090NovosibirskRussia Novosibirsk State University 2 Pirogova Str.NovosibirskRussia

The kinetics is analyzed of the drift of non-potential plasma waves in spatial positions and wavevectors due to plasma's spatial inhomogeneity. The analysis is based on highly informative kinetic scenarios of the drift of electromagnetic waves in a cold ionized plasma in the absence of a magnetic field(Erofeev 2015 Phys. Plasmas 22 092302) and the drift of long Langmuir waves in a cold magnetized plasma(Erofeev 2019 J. Plasma Phys. 85 905850104). it is shown that the traditional concept of the wave kinetic equation does not account for the effects of the forced plasma oscillations that are excited when the waves propagate in an inhomogeneous *** are highlighted that account for these oscillations in the kinetic equations of the abovementioned highly informative wave drift scenarios.

关键词： informativeness of plasma kinetic scenario the ensemble method asymptotic convergence of perturbation theories correlation analysis of plasma kinetics kinetic equation of wave drift in phase space

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Unified treatment for accurate and fast evaluation of the Fermi-Dirac functions

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Chinese Physics B 2010年第5期19卷 72-77页

作者： i.i.Guseinov B.A.Mamedov Department of Physics Faculty of Arts and SciencesOnsekiz Mart UniversityCanakkaleTurkey Department of Physics Faculty of Arts and SciencesGaziosmanpa sa UniversityTokatTurkey

A new analytical approach to the computation of the Fermi-Dirac （FD） functions is presented, which was suggested by previous experience with various algorithms. Using the binomial expansion theorem these functions are expressed through the binomial coefficients and familiar incomplete Gamma functions. This simplification and the use of the memory of the computer for the calculation of binomial coefficients may extend the limits to large arguments for users and result in speedier calculation, should such limits be required in practice. Some numerical results are presented for significant mapping examples and they are briefly discussed.

关键词： statistical semiconductors plasma physics nuclear physics

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