scholarly journals Water: a substance with unique properties

2021 ◽  
Vol 100 (1) ◽  
pp. 19-24
Author(s):  
Valery I. Slesarev
Keyword(s):  
Vortex Motion ◽  
Dynamic Network ◽  
Wide Frequency Range ◽  
Radio System ◽  
Second Stage ◽  
Living Things ◽  
Network Of Hydrogen Bonds ◽  
Living Organisms ◽  
First Time ◽  
Vortex Tubes

Water is a supramolecular aqua system with a single highly structurally dynamic network of hydrogen bonds. Since this grid is inhomogeneous in properties and structure, a proposed aquamezophase model of water takes into account the indicated heterogeneity and homogeneity of water. The peculiarities of intermolecular interactions for hydration and aquaclatratation, characteristic of water, are described. For the first time, the peculiarities of the chemistry and energy of water during vortex motion were revealed. This made it possible to propose a mechanism of action for vortex tubes, a cyclone of J. Rank, and aqua-vortex heat generators. Due to the vortex movement, the aquatic systems of the living organisms actively show restorative properties and become a source of energy necessary for life. Due to the thermodynamic nonequilibrium, openness, nonlinearity, and self-oscillating properties, water is a source of very weak acoustic and electromagnetic aqua emissions in a wide frequency range from fractions of Hz to 1017 Hz, which are recorded as emissions from the end of the 20th century. Since water is a source of radiation and is sensitive to external radiation, water is an aqua-radio system. Under even weak external influences, water is characterized by phase transitions of the second order under external weak influences, at which its ΔUtotal ≈ 0. At the first resonance stage, a quickly coordinated and conjugated transformation |ΔUfree|↔|ΔUconnect| occurs, which changes the properties of water. The second stage is a slow return to its original state, i.e., structural-temporal hysteresis is observed. The change in the properties of water as a result of a phase transition of the second kind is called aquacommunication. Given that living things in molecular composition consist of 99% of water, all living things are also aqua-systems.

Biology and Materials? Part I

MRS Bulletin ◽  
1992 ◽  
Vol 17 (10) ◽  
pp. 24-26 ◽  
Author(s):  
Mark Alper
Keyword(s):  
Molecular Basis ◽  
Materials Science ◽  
Vital Force ◽  
The Past ◽  
Biological Phenomena ◽  
Living Things ◽  
The Common ◽  
Living Organisms ◽  
Science Departments ◽  
First Time

Poets and philosophers have, through the ages, viewed organisms as the embodiment of the mysterious “Vital Force,” a unique non-earthly element required for the functioning of life processes.Biologists have seen, in living organisms, an adaptive, self-reproducing, evolving collection of molecules acting solely according to the laws of chemistry and physics.Historians speak of the iron or bronze ages and, more recently of the plastics (polymers) and the silicon ages. Materials science departments speak of metals, alloys, ceramics, and perhaps polymers—but not of genes.The “common man” has, it must be admitted, seen living organisms as a source of useful and important materials—wood for building; cotton, silk, and other fibers for textiles; horn, shell, and bone for tools and weapons; fats for lubricants; fur for clothingBut, in fact, few of us now think of materials when we think of living things. Neither do we think of DNA, protein, and carbohydrates when we think of materials.No, biologists have not been blackballed by materials scientists, chemists, and physicists. Until recently, they neither understood the processes by which life produces its materials nor even conceived of manipulating those processes to tailor the properties of the materials to our needs. Only within the past few years has the “biological revolution” expanded our understanding of the molecular basis for biological phenomena and our ability to control them. It is only now, for the first time, that one can point to a legitimate field of science based on mimicking, adapting, and controlling biological systems with the goal of producing novel materials with important, unique, and useful properties.

The Death of the Ethic of Life

2019 ◽  
Author(s):  
John Basl
Keyword(s):  
Environmental Ethics ◽  
Philosophy Of Biology ◽  
Biomedical Ethics ◽  
Moral Concern ◽  
Ethics Of Technology ◽  
Living Things ◽  
Moral Importance ◽  
Practical Concern ◽  
Living Organisms

According to the ethic of life, all living organisms are of special moral importance. Living things, unlike simple artifacts or biological collectives, are not mere things whose value is entirely instrumental. This book articulates why the ethic is immune to most of the standard criticisms raised against it, but also why such an ethic is untenable, why the domain of moral concern does not extend to all living things; it argues for an old conclusion in an entirely new way. To see why the ethic must be abandoned requires that we look carefully at the foundations of the ethic—the ways in which it is tightly connected to issues in the philosophy of biology and the sorts of assumptions it must draw on to distinguish the living from the nonliving. This book draws on resources from a variety of branches of philosophy and the sciences to show that the ethic cannot survive this scrutiny, and it articulates what the death of the ethic of life means in a variety of areas of practical concern, including environmental ethics, biomedical ethics, ethics of technology, and in philosophy more generally.

FACES OF V.M. SHUKSHIN: MARTIN IDEN, HAMLET, STEPAN RAZIN

2021 ◽  
pp. 59-65
Author(s):  
Т.А. Богумил
Keyword(s):  
Early Stage ◽  
Socialist Realism ◽  
Crowding Out ◽  
Behavioral Models ◽  
Cluster Approach ◽  
Second Stage ◽  
The Third ◽  
Third Stage ◽  
Early Departure ◽  
First Time

В статье предлагается концепция жизни и творческого роста В.М. Шукшина сквозь призму тезаурусного и кластерного подходов. Объяснительными «персональными моделями» для интерпретации биографического текста писателя являются кластеры Мартина Идена, Гамлета и Степана Разина. Ранее биографы и литературоведы указывали на важность этих персон для Шукшина, но разрозненно. Впервые предпринята попытка свести указанные персональные модели воедино, в целостный сюжет становления писателя в пространстве культуры. На разных этапах эволюции автора доминирует одна из указанных моделей, последовательно сменяя друг друга, но не вытесняя, а «внахлест». Ранний этап творчества, ориентированный на стратегию Мартина Идена, является попыткой «вписаться» в наличный культурный мейнстрим. Выражено это в следовании поэтике соцреализма. Второй этап подспудно начинается с реабилитации отца Шукшина в 1956 года, когда актуализируется «гамлетовский комплекс», проявляющийся в чувстве вины перед отцом, через стратегию утаивания подлинного «я», мотивы чудаковатости. Третий этап связан с личностью реального исторического лица, Степана Разина, и выражается в открытом протесте против власти. Все важные для В.М. Шукшина поведенческие модели объединены мотивом одинокого противостояния враждебному социуму и имеют трагический финал, что обусловило ранний уход писателя и порождение мифов о насильственном характере его смерти. В.М. Шукшин одновременно был фигурой неординарной и типичной, что позволило его биографии стать «персональной моделью» для последующих авторов, выходцев из сельской глубинки. The article proposes the concept of life and creative growth of V.M. Shukshin through the prism of the thesaurus and cluster approach. The explanatory "personal models" for interpreting the biographical text of the writer are clusters of Martin Eden, Hamlet and Stepan Razin. Earlier, biographers and literary critics pointed out the importance of these people for Shukshin, but it was scattered. For the first time, an attempt was made to bring these personal models together into an integral plot of the formation of the writer in the space of culture. At different stages of the writer’s evolution, one of these models dominates, successively replacing each other, but not crowding out, but “overlapping”. The early stage of creativity, focused on Martin Eden’s strategy, is an attempt to “fit in” the current cultural mainstream. This is expressed in following the poetics of socialist realism. The second stage implicitly begins with the rehabilitation of Shukshin’s father in 1956, when the “Hamletian complex” is actualized. It is manifested in a sense of guilt towards his father, the strategy of concealing the true “I”, eccentricities. The third stage is connected with the personality of a real historical person, Stepan Razin, and is expressed in an open protest against the authorities. All important for V.M. Shukshin's behavioral models are united by the motive of a lonely confrontation with a hostile society and have a tragic ending, which led to the early departure of the writer and the generation of myths about the violent nature of his death. V.M. Shukshin was an extraordinary and typical figure at the same time. That allowed his biography to become a “personal model” for subsequent authors who came from the rural outback.

Free Vibration Analysis of Two-Stage Planetary Gear With Friction

2018 ◽  
Author(s):  
Wei Liu ◽  
Yunbo Yuan ◽  
Tao He ◽  
Donghua Wang
Keyword(s):  
Free Vibration ◽  
Degrees Of Freedom ◽  
Sliding Friction ◽  
Free Vibration Analysis ◽  
Planetary Gear ◽  
Two Stage ◽  
Second Stage ◽  
Torsional Coupling ◽  
Coupling Dynamic ◽  
First Time

Considering the effect of teeth surface sliding friction, free vibration of two-stage planetary gears (TPG) is studied theoretically for the first time. The lateral-torsional coupling dynamic model and equation are established with three degrees of freedom: two translations and one rotation. The change rule of natural frequency is discussed with the case of first stage planetary gear’s number 4 and second stage planetary gear’s number 3, 4 and 5. Afterwards three vibration modes are summarized by calculating the free vibration. In order to understand the behavior of friction, the effect of friction on natural frequencies is analyzed for the case of considering friction and not considering friction. Furthermore, the ‘self-coupling’ phenomenon is obtained from the vibration of center component of TPG Meanwhile, the ‘mutual coupling’ is obtained between the first-stage planetary gear (FPG) and the second-stage planetary gear (SPG).

scholarly journals DISTORTIONLESS SIGNALS TRANSFER THROUGH A WIRE MEDIA METASTRUCTURE

2018 ◽  
Vol 8 (1) ◽  
pp. 44-47 ◽  
Author(s):  
Dmytro Vovchuk ◽  
Serhii Haliuk ◽  
Leonid Politanskyy
Keyword(s):  
Electromagnetic Waves ◽  
Spectral Characteristics ◽  
Wide Frequency Range ◽  
Power Transfer ◽  
Fabry Perot ◽  
Signal Distortions ◽  
Metallic Wires ◽  
The Wire ◽  
Wire Media ◽  
First Time

In the paper the development of the components of communication means is considered based on the wire metastructures. This approach is novel and quite promising due to the metamaterials provides new opportunities for the radio engineering devices such as antennas, absorbers etc. First of all it makes possible decreasing of the dimensions of devices while the characteristics stay the same or better. Here the artificially created metastructure that consists of parallel metallic wires and characterizes by a negative electric permittivity was investigated. The possibility of broadband power transfer of electromagnetic waves was demonstrated. Also, at first time, the investigation of possible signal distortions due to wave propagation through the wire medium (WM) slab was performed via analyzing of spectral characteristics. The obtained results allow applying of WM to power transfer in wide frequency range (not only at frequencies of Fabry-Perot resonant) and enhancement of weak source propagation as well as to antennas constructions due to the absence of signal distortions. One of the promising applications of such structures is the possibility of realizing of flexible screens with nanometer thickness and high resolution.

On the Life Cycle of Spirocerca lupi: Preinfective Stages in the Intermediate Host

1972 ◽  
Vol 46 (2) ◽  
pp. 125-137 ◽  
Author(s):  
R. C. Chhabra ◽  
Kunwar Suresh Singh
Keyword(s):  
Life Cycle ◽  
Intermediate Host ◽  
Spirocerca Lupi ◽  
Second Stage ◽  
Stage 1 ◽  
First Time

The development of the preinfective stages of S. lupi has been described and illustrated and the details of morphology given for the first time.The sex of the first stage juveniles can be distinguished by locating the position of the genital primordium. On an average, the first stage juveniles measure 0·39 mm. in length and 0·036 mm. in breadth, early second stage 0·78 and 0·044 mm. and the advanced second stage 1·40 mm. and 0·63 mm. respectively. The second stage juveniles obtained from beetles were not infective to dogs.

Ants as an Experiential Learning Strategy in Preschool Teacher Training

2021 ◽  
pp. 134-154
Author(s):  
Rosa María Gálvez Esteban ◽  
Beatriz Bravo Torija ◽  
Jose Manuel Pérez Martín
Keyword(s):  
Preservice Teachers ◽  
Experiential Learning ◽  
Learning Strategy ◽  
Preschool Teachers ◽  
Life Cycles ◽  
Preschool Teacher ◽  
Education Project ◽  
Teaching Resource ◽  
Living Things ◽  
Living Organisms

In this chapter, the authors present the results of a project designed for 41 preservice preschool teachers to introduce the concept of living things as an experiential learning strategy in the classroom. The need to approach this concept from a different perspective prompted the design of an education project involving the introduction of insects into classroom as a teaching resource. An informative storyline was used for project launch presentation. The questions they strive to answer in this chapter are related with what concepts of living organisms and what inquiry stages will preservice teachers consider their pupils will carry out during the project. Relevant concepts that are usually not much covered in the preschool curriculum such as the life cycles of animals were considered by 23 participants. Twenty-five of the future teachers claimed that they would be able to work on every inquiry step if they implemented this project in the classroom.

scholarly journals Effect of 10 UV Filters on the Brine Shrimp Artemia salina and the Marine Microalga Tetraselmis sp.

Toxics ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 29
Author(s):  
Evane Thorel ◽  
Fanny Clergeaud ◽  
Lucie Jaugeon ◽  
Alice M. S. Rodrigues ◽  
Julie Lucas ◽  
...  
Keyword(s):  
Brine Shrimp ◽  
Artemia Salina ◽  
Trophic Levels ◽  
Aquatic Environments ◽  
Uv Filters ◽  
Personal Care Product ◽  
Marine Microalga ◽  
High Concentrations ◽  
Living Organisms ◽  
First Time

The presence of pharmaceutical and personal care product (PPCP) residues in the aquatic environment is an emerging issue due to their uncontrolled release through gray water, and accumulation in the environment that may affect living organisms, ecosystems and public health. The aim of this study is to assess the toxicity of benzophenone-3 (BP-3), bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT), butyl methoxydibenzoylmethane (BM), methylene bis-benzotriazolyl tetramethylbutylphenol (MBBT), 2-ethylhexyl salicylate (ES), diethylaminohydroxybenzoyl hexyl benzoate (DHHB), diethylhexyl butamido triazone (DBT), ethylhexyl triazone (ET), homosalate (HS) and octocrylene (OC) on marine organisms from two major trophic levels, including autotrophs (Tetraselmis sp.) and heterotrophs (Artemia salina). In general, results showed that both HS and OC were the most toxic UV filters for our tested species, followed by a significant effect of BM on Artemia salina due to BM—but only at high concentrations (1 mg/L). ES, BP3 and DHHB affected the metabolic activity of the microalgae at 100 µg/L. BEMT, DBT, ET, MBBT had no effect on the tested organisms, even at high concentrations (2 mg/L). OC toxicity represents a risk for those species, since concentrations used in this study are 15–90 times greater than those reported in occurrence studies for aquatic environments. For the first time in the literature, we report HS toxicity on a microalgae species at concentrations complementing those found in aquatic environments. These preliminary results could represent a risk in the future if concentrations of OC and HS continue to increase.

scholarly journals Decreasing Mining Losses for the Room and Pillar Method by Replacing the Inter-Room Pillars by the Construction of Wooden Cribs Filled with Waste Rocks

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3564 ◽  
Author(s):  
Krzysztof Skrzypkowski
Keyword(s):  
Underground Mining ◽  
Second Stage ◽  
Ore Body ◽  
Strength Tests ◽  
Waste Rocks ◽  
Rock Pillars ◽  
First Time ◽  
Numerical Program ◽  
Vertical Deformations ◽  
Maximal Capacity

The article presents methods of securing mining excavations using wooden cribs. For the underground room and pillar method used to excavate zinc and lead ore body in the Olkusz-Pomorzany mine in Poland, model tests for the replacement of rock pillars by wooden cribs are presented. In the first stage of research, the results of laboratory strength tests carried out on models of four-point, six-point and eight-point cribs made of wooden beech beams at a 1:28 scale arranged horizontally were determined. For the first time, a concave round notch connection was used to connect the beams of the wooden cribs. The maximal capacity of cribs consisting only of beams and filled with waste rocks taken from underground mining excavations was determined. In addition, the vertical deformations of the cribs at maximal loading force and their specific deformations are presented. Additionally, on the basis of load-displacement characteristics, the range in variability of the stiffness of empty cribs and those filled with waste rocks was calculated as a function of their compressibility. In the second stage of research, the room and pillar method was designed in the Phase2 numerical program. The aim of the study was to determine the stresses in the inter-room pillars. Based on the results of laboratory and numerical tests, a factor of safety was determined, indicating that it is possible to reduce mining losses while maintaining the safe exploitation conditions of the ore body.

scholarly journals Dissemination of Isaria fumosorosea Spores by Steinernema feltiae and Heterorhabditis bacteriophora

2020 ◽  
Vol 6 (4) ◽  
pp. 359
Author(s):  
Jiří Nermuť ◽  
Jana Konopická ◽  
Rostislav Zemek ◽  
Michal Kopačka ◽  
Andrea Bohatá ◽  
...  
Keyword(s):  
Entomopathogenic Nematodes ◽  
Heterorhabditis Bacteriophora ◽  
Potato Dextrose Agar ◽  
Steinernema Feltiae ◽  
Soil Organisms ◽  
Isaria Fumosorosea ◽  
Second Stage ◽  
Glass Tubes ◽  
First Time ◽  
Globally Distributed

Entomopathogenic nematodes and fungi are globally distributed soil organisms that are frequently used as bioagents in biological control and integrated pest management. Many studies have demonstrated that the combination of biocontrol agents can increase their efficacy against target hosts. In our study, we focused on another potential benefit of the synergy of two species of nematodes, Steinernema feltiae and Heterorhabditis bacteriophora, and the fungus Isaria fumosorosea. According to our hypothesis, these nematodes may be able to disseminate this fungus into the environment. To test this hypothesis, we studied fungal dispersal by the nematodes in different arenas, including potato dextrose agar (PDA) plates, sand heaps, sand barriers, and glass tubes filled with soil. The results of our study showed, for the first time, that the spreading of both conidia and blastospores of I. fumosorosea is significantly enhanced by the presence of entomopathogenic nematodes, but the efficacy of dissemination is negatively influenced by the heterogeneity of the testing arena. We also found that H. bacteriophora spread fungi more effectively than S. feltiae. This phenomenon could be explained by the differences in the presence and persistence of second-stage cuticles or by different foraging behavior. Finally, we observed that blastospores are disseminated more effectively than conidia, which might be due to the different adherence of these spores (conidia are hydrophobic, while blastospores are hydrophilic). The obtained results showed that entomopathogenic nematodes (EPNs) can enhance the efficiency of fungal dispersal.

Sign in / Sign up

Export Citation Format

Share Document