scholarly journals MECHANICAL PROPERTIES OF RNA NANOWIRES

2021 ◽  
Vol 9 (11) ◽  
pp. 126-129
Author(s):  
Het Shah ◽  
◽  
Andrews McEwan ◽  

RNA is a polymeric genetic bio-molecule found in all human beings. It is the main genetic material in many viruses. In this paper we test the mechanical properties of RNA NWs. We will find Youngs Modulus of RNA Nanowires (NWs) as a function of diameter with taking equilibrium strain, Poissons ratio and surface stress in consideration. As previously no study has been published regarding Youngs Modulus of RNA we take a theoretical approach towards it. We will predict the behavior of RNA NWs and see the resemblance to either semiconducting or metallic nature of NWs. This study extrapolates key factors in modelling RNA NWs for the creation of nanowires based aptasensors, genetics and other related applications.

2020 ◽  
pp. 5-18
Author(s):  
D. V. Prosvirnin ◽  
◽  
M. S. Larionov ◽  
S. V. Pivovarchik ◽  
A. G. Kolmakov ◽  
...  

A review of the literature data on the structural features of TRIP / TWIP steels, their relationship with mechanical properties and the relationship of strength parameters under static and cyclic loading was carried out. It is shown that the level of mechanical properties of such steels is determined by the chemical composition and processing technology (thermal and thermomechanical processing, hot and cold pressure treatment), aimed at achieving a favorable phase composition. At the atomic level, the most important factor is stacking fault energy, the level of which will be decisive in the formation of austenite twins and / or the formation of strain martensite. By selecting the chemical composition, it is possible to set the stacking fault energy corresponding to the necessary mechanical characteristics. In the case of cyclic loads, an important role is played by the strain rate and the maximum load during testing. So at high loading rates and a load approaching the yield strength under tension, the intensity of the twinning processes and the formation of martensite increases. It is shown that one of the relevant ways to further increase of the structural and functional properties of TRIP and TWIP steels is the creation of composite materials on their basis. At present, surface modification and coating, especially by ion-vacuum methods, can be considered the most promising direction for the creation of such composites.


2019 ◽  
Vol 24 (2) ◽  
pp. 343-367
Author(s):  
Roberto Paura

Transhumanism is one of the main “ideologies of the future” that has emerged in recent decades. Its program for the enhancement of the human species during this century pursues the ultimate goal of immortality, through the creation of human brain emulations. Therefore, transhumanism offers its fol- lowers an explicit eschatology, a vision of the ultimate future of our civilization that in some cases coincides with the ultimate future of the universe, as in Frank Tipler’s Omega Point theory. The essay aims to analyze the points of comparison and opposition between transhumanist and Christian eschatologies, in particular considering the “incarnationist” view of Parousia. After an introduction concern- ing the problems posed by new scientific and cosmological theories to traditional Christian eschatology, causing the debate between “incarnationists” and “escha- tologists,” the article analyzes the transhumanist idea of mind-uploading through the possibility of making emulations of the human brain and perfect simulations of the reality we live in. In the last section the problems raised by these theories are analyzed from the point of Christian theology, in particular the proposal of a transhuman species through the emulation of the body and mind of human beings. The possibility of a transhumanist eschatology in line with the incarnationist view of Parousia is refused.


Author(s):  
Jordan Wessling

This book provides a systematic account of the deep and rich love that God has for humans. Within this vast theological territory, the objective is to contend for a unified paradigm regarding fundamental issues pertaining to the God of love who deigns to share His life of love with any human willing to receive it. Realizing this objective includes clarifying and defending theological accounts of the following: • how the doctrine of divine love should be constructed; • what God’s love is; • what role love plays in motivating God’s creation and subsequent governance of humans; • how God’s love for humans factors into His emotional life; • which humans it is that God loves in a saving manner; • what the punitive wrath of God is and how it relates to God’s redemptive love for humans; • and how God might share His intra-trinitarian love with human beings. As the book unfolds, a network of nodal issues are examined related to God’s love as it begins in Him and then overflows into the creation, redemption, and glorification of humanity. The result is an exitus-reditus structure driven by God’s unyielding love.


1994 ◽  
Vol 14 ◽  
pp. 33-39 ◽  
Author(s):  
M. A. Hossaryl ◽  
E. S. E. Galal

SUMMARYThe Fayoumi (Oasis/Province of Fayotimi) or Ramadi (village of Dar-el-Ramad) breed of chicken is said to have been introduced into this area in the early part of the 19th century; phenotypically it recalls the Silver Campine from which it is reputed to descend. A hardy and well adapted breed it was saved through the creation of the Fayoumi Poultry Research Station in 194é, which also assured an active improvement policy of the breed. The creation in 1958 of the Fayoumi Poultry Cooperative Society further strengthened the conservation of the breed and its use through distribution of genetic material to farmers and smallholders of the Fayoumi province. Since the early é0's the breed is reported to have been successfully introduced to countries as different as the UK and the USA, Vietn@ Iraq, Pakistan and India. Its adaptability and resistance to the problems of xyrotherrnic tropical and sub-tropical conditions is confirmed by its actual prevalence in Southern Egypt.


2019 ◽  
Vol 946 ◽  
pp. 380-385
Author(s):  
Boris A. Chaplygin ◽  
Viacheslav V. Shirokov ◽  
Tat'yana A. Lisovskaya ◽  
Roman A. Lisovskiy

The strength of abrasive wheels is one of the key factors affecting the performance of abrasive machining. The paper discusses ways to improve the strength of abrasive wheels. The stress-state mathematical model presented herein is a generalization of the existing models. It is used herein to find for the first time that there are numerous optimal combinations of the elastic modulus and reinforcing material density, which result in the same minimum value of the objective function. It is found out that increasing the radius of the reinforcing component while also optimizing the mechanical properties of its material may increase the permissible breaking speed of the wheel several times. We herein present a regression equation and a nomogram for finding the optimal combination of control factors. Conventional methods for testing the mechanical properties of materials, which have been proven reliable for testing metals and alloys, are not as reliable for testing abrasive materials, as the test results they generate are not sufficiently stable or accurate. We therefore propose an alternative method that does not require any special equipment or special studies.


2014 ◽  
Vol 8 (2) ◽  
pp. 146-167 ◽  
Author(s):  
Manya Jaura ◽  
Snejina Michailova

Purpose – The purpose of this paper is to examine the influence of cognition on knowledge sharing between members of the acquiring and acquired organisations in the post-acquisition integration process. It specifically analyses differentiation between in-groups and out-groups, the perception of organisational identity and interaction among members of the acquired and acquiring organisations and how these three factors affect knowledge sharing. Design/methodology/approach – The authors develop theoretical propositions and conduct an explorative pilot study on the basis of original interview data conducted with ten respondents in four Indian IT companies that have acquired firms abroad. Findings – The authors find evidence for supporting the negative effect of in- and out-groups differentiation and the positive effect of interpersonal interaction on knowledge sharing among employees of the acquired and acquiring organisations. There was indicative, but less compelling, evidence for the negative influence of inter-group competition and the positive influence of perceived shared organisational identity on knowledge sharing. Different from the established view, the authors find that when Indian firms acquire firms abroad, they immediately initiate knowledge flows from the targets rather than going through a long period of integration prior to acquiring knowledge from the targets. Research limitations/implications – The paper contributes to the scholarly conversation on cognition and knowledge sharing and argues that firms that are located in developing economies and that acquire firms abroad behave in a way somewhat different from what Western literature postulates. This invites for further studies, both theoretical and empirical, to shed light on this phenomenon. The present paper is focused only on one country, India, and on a single industry, the IT industry. It is limited in its empirical part, mainly due to enormous difficulties in getting access to the field. Practical implications – The study demonstrates how central individuals are to the process of knowledge sharing and the accomplishment of organisational objectives in a post-acquisition context. Managers should understand that the knowledge their employees possess is a strategic asset, and therefore how they use it is influential in attaining organisational goals in general, and acquisition integration objectives in particular. The creation of task- and project-related communities or groups can help in establishing a shared organisational identity, especially after the turbulent event of one company acquiring another one. The creation of communities or groups where socialisation is encouraged can lead to employees interacting with one another and developing a sense of belongingness with the community or group. Over time, this belongingness can translate into a shared organisational identity, which is beneficial for the organisation. The findings suggest that the creation of task- or project-oriented communities and groups is a powerful way to achieve that. Originality/value – The contribution of the paper is fourfold. First, while macro orientation dominates literature on the growth of the Indian IT industry, this study is conducted at the individual level of analysis, by focusing on managers in acquiring Indian IT firms. Second, whereas studies that have examined cognition and knowledge sharing have done so mainly through social capital lenses, this paper focuses on factors that are based on the inherent tendency of human beings to categorise themselves and other individuals. Third, the paper examines the links between cognition and knowledge sharing in an exciting context, namely, post-acquisition integration. Finally, while research on both post-acquisition integration and knowledge sharing is biased towards a Western context, this study investigates knowledge sharing and post-acquisition integration in the context of a major non-Western emerging economy.


2014 ◽  
Vol 54 (3) ◽  
pp. 303-322 ◽  
Author(s):  
KuuNUx TeeRIt Kroupa

In May 2009, the Arikara returned to the land of their ancestors along the Missouri River in South Dakota. For the first time in more than a half century, a Medicine Lodge was built for ceremony. The lodge has returned from its dormant state to regain its permanent place in Arikara culture. This event will be remembered as a significant moment in the history of the Arikara because it symbolizes a new beginning and hope for the people. Following this historic event, Arikara spiritual leader Jasper Young Bear offered to share his experience and deep insight into Arikara thought: You have to know that the universe is the Creator's dream, the Creator's mind, everything from the stars all the way to the deepest part of the ocean, to the most microscopic particle of the creation, to the creation itself, on a macro level, on a micro level. You have to understand all of those aspects to understand what the lodge represents. The lodge is a fractal, a symbolic representation of the universe itself. How do we as human beings try to make sense of that? That understanding, of how the power in the universe flows, was gifted to us through millennia of prayer and cultural development… It is important for us to internalize our stories, internalize the star knowledge, internalize those things and make that your way, make that your belief, because we're going to play it out inside the lodge. It only lives by us guys interacting with it and praying with it and bringing it to life… We're going to play out the wise sayings of the old people… So you see that it's an Arikara worldview. A learning process of how the universe functions is what you're actually experiencing [inside the Medicine Lodge]. What the old people were describing was the functioning of how we believed the universe behaves. And we had a deep, deep understanding of what that meant and how it was for us. So that's what you're actually seeing in the Medicine Lodge.


2016 ◽  
Vol 12 (10) ◽  
pp. 71
Author(s):  
Jafar Aghazadeh ◽  
Hasan Mohammadi

<p>In the thoughts and beliefs of Iranians, kingdom has had a history of the creation of human beings on the earth. Accordingly, Iranians believe that the first creature and human being on the earth was the first king of Iran. Iranians connects the history of their mythical royal dynasties to the creation of humanity. For Iranians, the mythical kings of Iran are the creators of the royal institution and the functions and duties of the royal institution have been established, developed and transferred to next generations by the measures of these kings. The objective of the present study is to investigate the establishment of the royal institution and the development of royal institution in ancient Iran by a descriptive-analytical method. The findings indicate that Iranians had specific sacredness for their kings and called the first creature of Ahura Mazda as the King. In addition, they believed that kings should perform particular tasks whose formation was attributed to the mythical kings of Iran. Further, they believed that only those persons had the right of being a king who were from the race of kings and were approved by Ahura Mazda. to examine Lessing’s elucidation of authentic knowledge in <em>Shikasta</em>. The methodology appropriated in the paper entails depiction of visible world as an illusion of the Real pointed in Plato’s allegory of Cave and Nagarjuna’s Mundane Truth. We clarify emotion as the main motivator of such illusionary status stressed in both Plato and Nagarjuna’s thoughts. We argue that while the importance of reason and eradicating emotion cannot be ignored, what adjoins people to Truth is mindfulness and intuitive knowledge which is close to Nagarjuna’s non-dual patterns. By examining ordinary life as the illusion of Real, and emotion as the main obstacle to achieve the Truth emphasized in both Nagarjuna and Plato’s trends, we depart from other critics who undermine the eminence of essentialist trace in Lessing’s works and examine her approach towards Truth merely under postmodern lens. This departure is significant since we clarify while essentialism has been abandoned to a large extent and supporters of Plato have become scarce, amalgamation of his thoughts with spiritual trends opens a fresh way to earn authenticity in Lessing’s novel. </p><p> </p>


2015 ◽  
Vol 11 (2) ◽  
Author(s):  
Milla Benicio

RESUMO O principal objetivo deste artigo é traçar o itinerário científico e filosófico que permitiu à modernidade a criação de um novo campo de visibilidade dentro da ciência, enfraqueceu o antigo pressuposto da centralidade do homem em relação aos demais seres e levou a uma complexa transformação nas relações do homem com o mundo natural. Nosso foco será, portanto, a grande reorganização epistemológica e cultural do Ocidente, cujas quebras de paradigmas revolucionaram não apenas as noções ligadas à natureza, mas, principalmente, ao papel do homem nesse cenário.Palavras-chave: Reorganização Epistemológica; Homem; Mundo Natural.      ABSTRACT This article aims to draw the scientific and philosophical route which allowed to modernity the creation of a new field of visibility within science. This field weakened the old assumption of the centrality of human beings in relation to other and led to a complex transformation in human relationships with the natural world. Our focus will therefore be the major epistemological reorganization of the Western, whose breaking paradigms revolutionized not only the concepts related to the nature, but, mainly, to the role of the man in this scenario.Keywords: Epistemological Reorganization; Man; Natural World.


2016 ◽  
Vol 6 (2) ◽  
pp. 23-25
Author(s):  
Ruth Illman

A response to Melissa Raphael’s article ‘The creation of beauty by its destruction: the idoloclastic aesthetic in modern and contemporary Jewish art’. Key themes discussed include the notion of human beings as created in the image of God, Levinas’s understanding of the face and its ethical demand as well as the contemporary issue of the commodification of the human face in digital media.


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