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Search Results: 1 - 10 of 279817 matches for " Barybina L. I. "
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RESEARCH OF THE CHARACTERISTICS OF ELECTRIC PULSE DISCHARGE IN CHLORIDE SODIUM SOLUTIONS Исследование характеристик электроимпульсного разряда в водных растворах хлористого натрия
Nagdalyan A. A.,Oboturova N. P.,Barybina L. I.,Lukyanchenko P. P.
Polythematic Online Scientific Journal of Kuban State Agrarian University , 2013,
Abstract: Electro physical and energetic properties of electric pulse discharge in various concentration solutions of chloride sodium as the results of the researches are provided in this article. The possibility of applying the Yutkin effect in technological processes of food industry has been reviewed
Spontaneous Emergence of Physical Structures and Observable Formations: Fluctuations, Waves, Turbulent Pulsations and So on  [PDF]
L. I. Petrova
Journal of Applied Mathematics and Physics (JAMP) , 2016, DOI: 10.4236/jamp.2016.45094
Abstract: As it is known, the closed inexact exterior form and associated closed dual form make up a differential-geometrical structure. Such a differential-geometrical structure describes a physical structure, namely, a pseudostructure on which conservation laws are fulfilled (A closed dual form describes a pseudostructure. And a closed exterior form, as it is known, describes a conservative quantity, since the differential of closed form is equal to zero). It has been shown that closed inexact exterior forms, which describe physical structures, are obtained from the equations of mathematical physics. This process proceeds spontaneously under realization of any degrees of freedom of the material medium described. Such a process describes an emergence of physical structures and this is accompanied by an appearance of observed formations such as fluctuations, waves, turbulent pulsations and so on.
Connection between the Principles of Thermodynamics and the Conservation Laws: Physical Meaning of the Principles of Thermodynamics  [PDF]
L. I. Petrova
Journal of Applied Mathematics and Physics (JAMP) , 2018, DOI: 10.4236/jamp.2018.612223
Abstract: It has been shown that the first principle of thermodynamics follows from the conservation laws for energy and linear momentum. And the second principle of thermodynamics follows from the first principle of thermodynamics under realization of the integrating factor (namely, temperature) and is a conservation law. The significance of the first principle of thermodynamics consists in the fact that it specifies the thermodynamic system state, which depends on interaction between conservation laws and is non-equilibrium due to a non-commutativity of conservation laws. The realization of the second principle of thermodynamics points to a transition of the thermodynamic system state into a locally-equilibrium state. Phase transitions are examples of such transitions.
A Proposal of Framework for Professional Development of Turkish Teachers With Respect To Information And Communication Technologies
I??l KABAK?I
The Turkish Online Journal of Distance Education , 2009,
Abstract: Studies in recent literature indicate that professional development programs for teachers addressing Information and Communication Technologies (ICTs) are either inefficient or far from being productive. The reasons behind the inefficiency of such professional development activities are considered as the incompatibility between the level of training and teachers’ ICT skills, and the lack of active use of ICTs by teachers in the teaching and learning processes. Bearing this problem in mind, the current study aims at proposing a framework for organizing professional development activities for Turkish teachers regarding ICTs with an emphasis on teachers’ ICT-related needs, competencies and levels of technology use. Within the framework, it is suggested that teachers’ levels and categories of technology use be determined in the first place, which will be followed by a four-stage professional development structure leading to teachers’ effective ICT use and integration of ICTs in teaching-learning processes.
The biological potency of benzapyrene in the humates composition  [PDF]
L. I. Belykh, I. A. Ryabchikova, S. S. Timofeyeva
Agricultural Sciences (AS) , 2013, DOI: 10.4236/as.2013.412085
Abstract:

The aim of the paper was to determine benz(a)-pyrene in the preparations containing humates and study the benz(a)pyrene biological potency for the agricultural plants. The research methodology included the determination of the dependencies in the system “substance concentration (dose)effect on the plant”. Concentrations of benz(a)pyrene in 12 samples of the humates preparations and fertilizers based on their trademarks “Irkutsk humates”, obtained from brown coal, varied in the range from 0.3 to 50 mcg/kg, which creates no soil contamination in conditions of the use of preparations. Between contents of benz(a)pyrene and humates there is a correlation (rxy = 0.95; α = 0.05). It is ascertained that the effects of stimulation and/or inhibition of the growth and yield of agricultural plants depend on the concentration of benz(a)pyrene and the method of plant processing. Optimal concentrations of benz(a)pyrene were 150-200 ng/dm3 for preplant way of processing of potato tubers, 3-10 ng/dm3for top dressing (spraying) and 0.1-0.3 ng/dm3for dressing under the roots (hydroponic). The obtained results allowed us to offer one of the possible mechanisms of biological potency of humates as the plant growth stimulants, and also a way testing of the preparations by screening of their benz(a)pyrene content.

Express Screening of Biological Objects Using Multisensor Stripping Voltamperometry with Pattern Recognition  [PDF]
I. I. Kolesnichenko, L. M. Balachova, E. P. Kantarzhi
American Journal of Analytical Chemistry (AJAC) , 2016, DOI: 10.4236/ajac.2016.77054
Abstract: Express diagnostics of biological objects is necessary for operational preliminary assessment of the condition of the patient. A method of recognition of differences between the norm and pathology is based on analysis of multidimensional patterns of the voltamperogram electrochemical test systems in Electronic formats “language”, “electronic nose”. The basis of such systems is the use of a set (matrix) sensor with completely different characteristics. A. N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS (IPCE) developed a method for multidimensional stripping voltammetry, which allowed you to provide information on biological matter being investigated not as a number, as a response to a single dimension, and in the form of N-dimensional image. Formats are implemented in the process of electrochemical studies of liquid or gaseous phase. Evaluating the closeness of the resulting image object under test with known samples is collected in a database. Examples of express diagnostics of glaucoma are with accordance of the results of the electrochemical research of blood serum.
Use of ultrasound in food preservation  [PDF]
Songül ?ahin Ercan,i?dem Soysal
Natural Science (NS) , 2013, DOI: 10.4236/ns.2013.58A2002
Abstract:

Ultrasound is versatile and innovative technology due to its wide range of application and increase in knowledge and research studies. It is used in food industry for many purposes including analysis methods and food processings such as freezing, cutting, drying, tempering, homogenization, degassing, antifoaming, filtration and extraction. Ultrasound can be used as a promoter or alternative to food processing. There may be numereous advantages of using ultrasound for food processing such as effective mixing, increased mass transfer, reduced energy, reduced temperature and increased production rate. Due to the elimination of microorganisms and enzymes without destroying nutrients of foods, ultrasound can be used as an alternative method to thermal treatments in the food preservation. Additionally, low power ultrasound is thought to be an attractive nonthermal method due to overcome problems which occur during heat treatments such as physical and chemical changes, nutritional loss and change in organoleptic properties. This review summarizes mechanism, operation and latest potential applications of ultrasound in the food preservation.

Indigenous Peoples and Gender Roles: The Changing Traditional Roles of Women of the Kalanguya Tribe in Capintalan, Carranglan in the Philippines  [PDF]
Yolanda I. Camaya, Guillume L. Tamayo
Open Journal of Social Sciences (JSS) , 2018, DOI: 10.4236/jss.2018.62008
Abstract:
Part of the uniqueness of Indigenous Peoples is their rich culture and traditions which they have passed down from generation to generation. Focusing on the Indigenous Women of the Kalanguya Tribe in Capintalan, Carranglan, the study endeavors to learn and chronicle the traditional role of the Kalanguya women, how it has evolved through the years, and the factors that caused change. It compares the past and present roles of the Kalanguya women and delves into reasons why acculturation has taken place and why a radical shift in perspective has become evident not only in the Kalanguya women’s way of thinking but also in their way of life.
Optimization of Chromium (Vi) Removal by Donnan Dialysis  [PDF]
I. Marzouk, L. Dammak, L. Chaabane, B. Hamrouni
American Journal of Analytical Chemistry (AJAC) , 2013, DOI: 10.4236/ajac.2013.46039
Abstract:

The removal of chromium (VI) from aqueous solutions by Donnan dialysis has been investigated in this paper. In this process, two anion-exchange membranes (AEMs) were used: Selemion? AMV and Neosepta? AFN. The amount of chromium (VI) removed was determined in terms of the following parameters: initial concentration of chromium (VI), type of anion-exchange membrane, concentration of counter-ion and magnetic stirring rate. A 24 full factorial design analysis was performed to screen the parameters affecting the Cr (VI) removal efficiency. Using the experimental results, a linear mathematical model representing the influence of the different parameters as well as their interactions was obtained. Analysis of the variance (ANOVA), the F-test and the student’s test shows that the type of anion-exchange membrane is the most significant parameter affecting the chromium (VI) removal. The statistical analysis of the experimental data assumes it to be a normal distribution.

Application of Donnan Dialysis Coupled to Adsorption onto Activated Alumina for Chromium (VI) Removal  [PDF]
I. Marzouk, L. Chaabane, L. Dammak, B. Hamrouni
American Journal of Analytical Chemistry (AJAC) , 2013, DOI: 10.4236/ajac.2013.48052
Abstract:

The aim of this paper is the assessment of Donnan dialysis coupled to adsorption process for the removal of chromium from aqueous solutions. This study was conducted in order to benefit from each process, and it was an original and new combination. The coupling was a solution to improve the contact time and the amount of chromium (VI) removed. The coupling was successfully performed with 90% of chromium (VI) removed after 6 hours.

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