scholarly journals BIOMEDICAL POTENTIAL OF ALGO-BACTERIAL SYMBIOSES

Author(s):  
N. V. Nemtseva ◽  
O. A. Gogoleva ◽  
M. E. Ignatenko

The analysis of the latest published works on the interactions between microalgae and bacteria is presented. Microalgae as a result of multimillion evolution can interact with each other and with another microorganisms. Interactions between algae and bacteria demonstrate a variety of communication from mutualism to parasitism. They can significantly affect the maintenance of vital activity, determines the direction vector, ensure the integrity of ecosystems. In modern society the attention of researches to algae-bacterial symbiosis increases as a biomass producer and as biologically active compounds. The development of green biotechnology is aimed at creating new directions for the use of algae-bacterial interactions. The analyzes materials testify to the high fundamental and applied potential of symbiosis microalgae with bacteria for biology and medicine.

Author(s):  
David F. Feldon ◽  
Soojeong Jeong ◽  
Joana Franco

Enhancing expertise in science, technology, engineering, and mathematics (STEM) is vital to promoting both the intellectual and economic development of a modern society. This chapter synthesizes relevant studies on the acquisition and development of STEM expertise from different areas of research, including cognitive psychology, the psychology of science, sociology and anthropology, and educational research. Specifically, first, the structure of relevant STEM disciplines in conceptualizing the domain of expertise are discussed. Then the fundamental mechanisms of thinking and problem-solving practices in science and engineering that underlie expert performance within these disciplines are presented. Issues pertaining to assessment and recognition of expertise in STEM fields are also examined. Lastly, evidence pertaining to the impact of training and education on the development of STEM expertise is reviewed. The chapter closes with a critical analysis of STEM expertise research to date and identifies unanswered critical questions and new directions for future research.


Author(s):  
Gennadiy N. Sadicov ◽  
Petro G. Kyrienko ◽  
Sergii O. Lobov

The discipline “Safety of vital activity” emergence as a mandatory subject in schools and universities is related to increased amount and the “quality” of risks generated by scientific and technological progress and appearance of environmental changes within the modern society the technosphere. The safety of vital activity initial foundations is initiated in the family and are subsequently formed and developed in the preschool institution. From the socialization perspective of the individual, the school years are classified as primary school age, adolescence, youth, that characterize socially constructed age periods. This indicates the necessity of creative approaches with including the training programs for safety of vital activity basics. In many cases the training programs and manuals on safety of vital activity programs contains a list of emergencies and the rules of conduct within the occurrence of it, in the absence of the causal analysis, of the medium and long-term consequences of their impact, which is the fundamental in understanding of the essence, predicting and preventing such situations. An alternative to resolving such contradictions can be the introduction of “Ecology” and “Valeology” as mandatory subjects, which appeared concurrently with the “Safety of vital activity”, and then disappeared from many educational programs. This range of educational programs represents the organic unity and internalinter connection and focusing increasingly on solving practical problems with concrete results in ensuring the safety of society. The Valeology is the branch of modern preventive medicine aimed to promoting healthy lifestyles. The achievement of Valeology is the separation between health and illness of an intermediate, “third state”, when a person is not sick yet, but is no longer healthy. The above characteristics of Ecology and Valeology, which makes visible the organic unity and internal relationship with the “Safety of vital activity”. The full pedagogical content of safety and life, and activities in modern conditions of societies existence can be considered as a single set.


2018 ◽  
Vol 64 (2) ◽  
pp. 65-70 ◽  
Author(s):  
V.O. Trokoz ◽  
◽  
A.V. Trokoz ◽  
V.F. Radchikov ◽  
M.M. Broshkov ◽  
...  

2014 ◽  
Vol 13 (2) ◽  
pp. 117-129
Author(s):  
Tayso Silva ◽  
Maurício Fernandes Pereira ◽  
Alexandre Marino Costa

The development, considered long been a universally accepted value and goal of every modern society, is now questioned, including on how it is produced. It is shown the importance of sustainable development towards the achievement of better living conditions. It was determined as the primary objective of this study to provide insights for maximizing sustainability as a stimulus to development trajectory in Latin America. The Intergovernmental Panel on Climate Change, the United Nations, the Kyoto Protocol, among other studies with international validity and acceptability were considered for propose strategic business parameters to the AL.


Author(s):  
С.О. СЕМЕНИХИН ◽  
О.В. ФЕДОСЕЕВА ◽  
М.В. БАБАКИНА ◽  
Н.М. ДАИШЕВА

Проведены исследования обработки растворов свекловичной мелассы 4 штаммами микроорганизмов с целью обогащения растворов жирами. Выявлено влияние начального значения рН, а также оптимального содержания сухих веществ в растворах мелассы, обеспечивающие эффективную жизнедеятельность микроорганизмов с синтезом биологически активных веществ. Установлено, что штаммы R. glutinis Y-332, C. curvatus Y-2236 и U. isabellina F-526 в растворах мелассы с начальным значением рН 8,5 синтезировали жиры в количестве 0,015 0,017 и 0,007 г/г сахаров соответственно штамм R. toruloides Y-334 в растворе мелассы с начальным значением рН 7,0 синтезировал жиры в количестве 0,004 г/г сахаров. Впервые получены экспериментальные данные, позволившие оценить эффективность микробиологического синтеза жиров в растворах мелассы без дополнительного внесения биогенных веществ, а также без поддержания оптимальной рН среды 4 видов микроорганизмов. Обосновано, что штаммы R. glutinis Y-332 и C. curvatus Y-2236 являются наиболее перспективными для обогащения растворов свекловичной мелассы жирами. Research aimed at treatment of beet molasses solutions with 4 strains of microorganisms in order to enrich the solutions with fats has beed established. The influence of the initial pH value, as well as the optimal dry matter content in molasses solutions, which ensure the effective vital activity of microorganisms with the synthesis of biologically active substances, is revealed. It was established that the strains of R. glutinis Y-332, C. curvatus Y-2236 and U. isabellina F-526 in molasses solutions with an initial pH of 8,5 synthesize fats in an amount of 0,015 0,017 and 0,007 g/g of sugars, respectively and the strain of R. toruloides Y-334 in molasses solution with an initial pH value of 7,0 synthesizes fats in an amount of 0,004 g/g of sugars. For the first time, it was obtained the experimental data that made possible to evaluate effectiveness of microbiological synthesis of fats in molasses solutions without nutrient addition, as well as without maintaining the optimal pH of the environment for 4 types of microorganisms. It is proved that R. glutinis strain Y-332 and C. curvatus strain Y-2236 are the most promising strains for enriching beet molasses solutions with fats.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xuan Liu ◽  
Bo Li ◽  
Guanqun Han ◽  
Xingwu Liu ◽  
Zhi Cao ◽  
...  

AbstractIt is very attractive yet underexplored to synthesize heterocyclic moieties pertaining to biologically active molecules from biomass-based starting compounds. Herein, we report an electrocatalytic Achmatowicz reaction for the synthesis of hydropyranones from furfuryl alcohols, which can be readily produced from biomass-derived and industrially available furfural. Taking advantage of photo-induced polymerization of a bipyridyl ligand, we demonstrate the facile preparation of a heterogenized nickel electrocatalyst, which effectively drives the Achmatowicz reaction electrochemically. A suite of characterization techniques and density functional theory computations were performed to aid the understanding of the reaction mechanism. It is rationalized that the unsaturated coordination sphere of nickel sites in our electrocatalyst plays an important role at low applied potential, not only allowing the intimate interaction between the nickel center and furfuryl alcohol but also enabling the transfer of hydroxide from nickel to the bound furfuryl alcohol.


2021 ◽  
Vol 296 ◽  
pp. 07006
Author(s):  
Aleksandr N. Sapozhnikov ◽  
Anastasiia V. Kopylova ◽  
Gharib Hafizov

The paper shows a short review of main useful properties of persimmon fruits, methods of their processing and practical use in formulations of different food production types. Based on the review, the advisability of using persimmon in marshmallows formulations is shown. Comparative characteristics of two drying methods of persimmon are carried out practically, and optimal parameters of drying process, where losses of biologically active substances are minimal, are established. The comparison of sensory characteristics of two marshmallow samples is shown, and their nutritional value is calculated. First (control) marshmallow sample was obtained using classical formulation. The formulation of second (experimental) marshmallow sample also included dried persimmon powder. It is determined that persimmon powder does not have negative effect on sensory properties of marshmallows and improves its nutritional value. Therefore, powder can be implemented practically. The developed marshmallows are a healthy food product, so it can work towards sustainable development of modern society reducing the number of nutritional diseases.


2018 ◽  
pp. 95-102
Author(s):  
Г. Н. Садиков ◽  
М. Е. Жидко ◽  
Ю. И. Гулый

The instinct of self-preservation can be considered as the main instinct, it is directly related to other instincts, such as: the maternal instinct, the instinct of hunger, thirst instinct, instinct of power, sexual instinct, and all of these instincts are responsible for the preserving life and its continuation. Nowadays, in the conditions of scientific and technological progress, man has developed the habitat and is going to develop a new habitat – technosphere, one feature of which is the progressive increase in the amount of dangers, such as: technological, social and political, biomedical, ecological, etc.; thus, in these changed circumstances the instinct of self-preservation can be described as the instinct for safety. The protective mechanisms generated by scientific and technological progress against the danger have not formed for a human in the process of evolution. An example is penetrating radiation, the consequences that may be the cause of death or a significant deterioration in human health. The consequences of penetrating radiation are well acknowledged, since no senses perceiving it and the perceived danger launches the instinct of self-preservation. The foundation of this launch is an instinctive fear for life and health. In the conditions of scientific progress growth rates and the amount of dangers generated by the progress, the instinct for safety is necessary as synonymous with the instinct of self-preservation. The justification of it can be the fact, that it’s not possible to stop the development of scientific progress, it will keep providing regular danger, because it’s unreal for the modern society to keep away from the benefits of civilization.At present, the security has become a constantly increasing social significance. The confirmation of the significance is the initiation of the mandatory subject «Safety of vital activity» at schools and universities. The subject «Safety of vital activity» for the universities is particularly important, since an alumnus of university becomes entitled to hold senior posts and responsibility for security of the managed enterprise and the team of employees. The chief has a moral, administrative responsibility and even criminal liability in the event of employee injury.Human instincts, in contrast to animal instincts, in which they are realized in full and unchanged form recorded in the genome, are controlled by it and subject to its conscious activity, formed in the process of its socialization. On this basis, individual authors replace the instinct of self-preservation in man with the concept of homeostatic regulation, also formed in the process of evolution. Homeostasis and homeostatic regulation in terms of its functional content is the instinct of the constancy of the internal environment of the organism, as well as all the instincts formed in the process of evolution. An illustrative example in the resolution of these contradictions is the description of the behavior of people in the wreck of such ships as the Titanic and Lusitania. The chances of survival were about 30%; on both ships there were not enough lifeboats. The difference was in the sinking speed. The speed of the sinking of ships affected the behavior of people: on board the rapidly sinking «Lusitania», everyone was for himself, so the most viable had more chances to escape. It should be noted that in both cases there was a pronounced stress. Slow sinking «Titanic» allowed people to follow the accepted social norms – to save in the first place children and women. At the same time, everyone realized that he was doing this to the detriment of himself, that is, ignored his own instinct of self-preservation. This analysis illustrates, that it takes time, there should be a certain place, favorable conditions and the personality in demonstration of the instinct of self-preservation by human, but it does not mean that the instinct is absent at the genome.


Author(s):  
Ya. L. Rusakova ◽  
O. V. Kazakov ◽  
V. A. Belyavskaya

To maintain a healthy immune system in animals, especially under conditions unfavorable for viral leukemia, a promising delivery system of biologically active molecules is considered – Subalin, a live delivery system. As a result of research, it has been established that with intraperitoneal and intravenous administration to animals, Subalin is harmless to animals, even at doses many times higher than the therapeutic one. With the introduction of the drug Subalin in animals stimulated humoral and cellular immunity, as evidenced by morphofunctional reorganization of the lymphoid system (spleen, lymph nodes). With the simultaneous administration of Subaline with a virus-containing suspension, subtility therapy had a stabilizing effect on the macroorganism, restraining the development of viral carcinogenesis.


Author(s):  
M.A. Frolova ◽  
A.I. Albulov ◽  
E.I. Kovaleva ◽  
A.K. Eliseev ◽  
A.V. Grin

Unfavorable environmental factors: pesticides, chemicals, poor nutrition of bee colonies lead to a decrease in the bee's immune defense. Currently, there is a continuous search for biologically active substances that stimulate the vital activity of bees and increase the egg-laying of queens. Analysis of scientific sources data has shown high efficiency for stimulating the viability and increasing the productivity of bees of such biologically active additives as chitosan and its derivatives, probiotic strains of bacteria Bacillus subtilis and Bacillus Lichineformis, as well as sources of vital amino acids. The experience accumulated to date in the use of chitosan and its derivatives in veterinary medicine makes it possible to classify chitosan as an effective adaptogen with multifunctional properties capable of providing the body's resistance to numerous adverse environmental factors and pathogens of various diseases. Due to the excess positive charge, chitosan acquires the properties of a highly active anionite. It binds and firmly holds ions of various heavy metals, radioactive isotopes, toxic elements with their subsequent removal from the body of animals, including bees. Chitosan and its derivatives have high antibacterial, sorption, fungicidal, antiviral activity, being a natural biocompatible product that is biodegradable to CO2 and H2O and does not pollute the environment. To stimulate the vital activity of bees and increase the egg-laying of queens, stimulating protein supplements are needed to cover the lack of vital amino acids, probiotic preparations that improve the microbiocenosis of the intestines of bees, sugar syrup. Earlier, at the preliminary stage of research, we developed a recipe for stimulating feeding for bees "BiChit", which includes low molecular weight chitosan, chitosan succinate, dry bacterial mass of Bacillus subtilis VKM B-2716D and Bacillus licheniformis VKM B-2717D, lactose-free edible glucose hydrolyzate, lactose-free whey. In this work, the influence of the multifunctional stimulating feeding "BiHit" on the economically useful traits of bee colonies based on private apiaries in the Moscow region and the Republic of Crimea has been studied. Studies have shown a positive effect of feeding on family strength, brood and honey production.


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