Magic Ring Research Articles

Click chemistry beyond metal-catalyzed cycloaddition as a remarkable tool for green chemical synthesis of antifungal medications.

Click chemistry is widely used for the efficient synthesis of 1,4-disubstituted-1,2,3-triazole, a well-known scaffold with widespread biological activity in the pharmaceutical sciences. In recent years, this magic ring has attracted the attention of scientists for its potential in designing and synthesizing new antifungal agents. Despite scientific and medical advances, fungal infections still account for more than 1.5 million deaths globally per year, especially in people with compromised immune function. This increasing trend is definitely related to a raise in the incidence of fungal infections and prevalence of antifungal drug resistance. In this condition, an urgent need for new alternative antifungals is undeniable. By focusing on the main aspects of reaction conditions in click chemistry, this review was conducted to classify antifungal 1,4-disubstituted-1,2,3-triazole hybrids based on their chemical structures and introduce the most effective triazole antifungal derivatives. It was notable that in all reactions studied, Cu(I) catalysts generated insitu by the reduction in Cu(II) salts or used copper(I) salts directly, as well as mixed solvents of t-BuOH/H2O and DMF/H2O had most application in the synthesis of triazole ring. The most effective antifungal activity was also observed in fluconazole analogs containing 1,2,3-triazole moiety and benzo-fused five/six-membered heterocyclic conjugates with a 1,2,3-triazole ring, even with better activity than fluconazole. The findings of structure-activity relationship and molecular docking of antifungal derivatives synthesized with copper-catalyzed azide-alkyne cycloaddition (CuAAC) could offer medicinal chemistry scientists valuable data on designing and synthesizing novel triazole antifungals with more potent biological activities in their future research.

Fondements du complexe d’Œdipe au travers du Seigneur des anneaux : une illustration à visée pédagogique

ContextAs part of a teaching of the foundations of the Oedipus complex according to Lacanian structural psychopathology, an illustration in the form of an analogy was proposed with certain aspects of The Lord of the Rings, the masterpiece by J.R.R. Tolkien. ObjectivesOur article aims to share this illustration for pedagogical purposes. MethodWhile presenting certain key elements of the theory of the Oedipus complex as reviewed by Lacan, we propose term-to-term equivalents by making this general situation incarnate through the destiny of Tolkien's characters, in particular the Oedipal triangulation between the Hobbit Frodo, bearer of a magic ring coveted by the sorcerer Sauron. ResultsWhile the analogy only covers part of the theory from selected pieces of the fantasy work, it provides a playful medium for conveying an abstract theoretical conception through an embodied imaginary conception. InterpretationsInteresting students without clinical experience in complex psychopathological conceptions can be achieved through such pedagogical efforts, which also question our own representations, through my themes having a certain proximity with the culture in which psychoanalysis was born.

Շիրակի մի հրաշապատում հեքիաթի տեղը «Կախարդական մատանի» տիպի հեքիաթախմբում

The subject of the study is the Shirak region magic folktale "The Tale of Jampulad", which belongs to the ATU 560 "The Magic Ring" folktale type group according to the international classification of Hans-Jörg Uther. The actions and realities of the folktale (the status of the character and the presence of an inheritance, the acquisition of faithful animals and a magical item, the presence of taboos, the theft of a magical item by evil forces and its return to the character) are studied in the context of Armenian, as well as Italian, Japanese, Persian, Russian, Bulgarian, Georgian, Kyrgyz folktales of the same type. A scrupulous study of the tales shows that the Shirak version, which has certain similarities with other tales of the group, is distinguished by a peculiar plot structure and some motifs due to the mutual penetration of folklore material and dialectal features typical for the region.

The Poe Centenary in Boston

The Poe Centenary in Boston

Lost Knowledge: The Concept of Vanished Technologies and Other Human Histories by Benjamin B. Olshin (review).

Reviewed by: Lost Knowledge: The Concept of Vanished Technologies and Other Human Histories by Benjamin B. Olshin Guan Zeng-Jian (bio) Lost Knowledge: The Concept of Vanished Technologies and Other Human Histories By Benjamin B. Olshin. Leiden: Brill, 2019. Pp. 458. Human history, as recorded in written accounts, covers only a small period of time compared to what is known as prehistory, human civilization before the use of writing. Prehistoric civilization is commonly understood through the interpretation of historical sites and archaeological excavations. But is there any other way to understand this period? And does other evidence shed light on questions such as whether the development of human civilization is linear, or an alternation of periodic [End Page 237] growth and decline? How did the dissemination of human knowledge, especially in prehistoric times, proceed? These are the issues Benjamin B. Olshin explores in his book Lost Knowledge. Olshin has his own understanding of the above problems. He believes that the development of human civilization may be cyclical, and in the prehistoric period it may also reach a level beyond our imagination, but the literature fails to record this. Knowledge passed on from generation to generation orally will eventually exist in various legends in a certain deformation. Olshin's book describes a new method to interpret the technical knowledge that may exist in the prehistoric period from these legends. Olshin focuses on the technical knowledge of the prehistoric period, especially ideas about machines and equipment. This decision makes sense, because if we want to understand societies at that time, it is crucial to understand their technical knowledge and their level of technological achievement, as these expressed and shaped, to a large extent, those societies. In explaining his choice of materials, Olshin writes that "it is important to understand that technological descriptions are bound to appear in works—even fictional ones—produced by any society that is making devices and experimenting with technology, even in an informal way" (p. 166). The word "informal" here means the materials the author used were not official historical documents. This argument relates to his understanding of knowledge dissemination. The author states that in prehistorical times, knowledge about various crafts and technologies was passed down without the organizational structures such as schools or guilds that assumed this role in later times. Oral transmission from generation to generation has made myths and folk tales the main carriers for preserving and disseminating these knowledges and therefore provides a glimpse of the basic appearance of ancient technical knowledge. To find evidence of prehistorical technology, the author does not focus on ancient sites and archaeological discoveries, but on early texts. He claims that their authors expressed the ancient technical characteristics they knew, thus proving the existence of these ancient technologies. This is an approach not many historians and archaeologists have applied. Another commendable aspect of Lost Knowledge is its attention to cultural diversity. The author traces a diverse range of technologies, including legends of aircraft, magic mirrors, the missing land of Atlantis, the story of Gyges and his magic ring in Plato's Republic, etc. For each technology, the author has collected descriptions from cultural regions as wide ranging as Europe, East Asia, South Asia, Oceania, and Native American lands. This makes for a colorful narrative and supports the author's conjecture about the mode of knowledge dissemination. The weakness of the author's argument is that he rarely analyzes the purpose and nature of these texts. He does not clearly explain whether the technical knowledge he describes really existed at the time, despite strongly [End Page 238] suggesting it did. This would require comparison with historical relics and archeological evidence. Nevertheless, this book makes us aware that myths and legends may shed some light on the history of technology. Guan Zeng-Jian Guan Zeng-jian is a distinguished professor at the School of Humanities, Shanghai Jiao Tong University. He presided over the 2015 China National Social Science Fund major project "The History of Metrology in China" and has published the books Kao Gong Ji: The World's Oldest Encyclopaedia of Technologies (Brill, 2019) and Geschichte der chinesischen Metrologie (NW Press, 2016) in cooperation with Konrad Herrmann. Citation: Zeng-jian, Guan...

Magic Rings: Navigation in the Ring Chemical Space Guided by the Bioactive Rings

The large majority of bioactive molecules contain a more or less complex ring system as a central structural element. This central core determines the basic molecule shape, keeps substituents in their proper positions, and often also contributes to the biological activity itself. In this study the ring systems extracted from one billion molecules are processed and differences between rings from bioactive molecules and common synthetic molecules are analyzed. The bioactive rings seem to be distributed throughout the large portion of chemical space, but not uniformly; one can see several more dense regions, where the bioactive rings often appear in small clusters, as well as empty areas. A web tool offering an interactive navigation in the ring chemical space and supporting identification of bioisosteric ring analogs available at https://bit.ly/magicrings is also described.

PENGARUH VARIASI UKURAN DIAMETER LUBANG MAGIC RING PADA EXHAUST MANIFOLD TERHADAP TORSI DAN DAYA SEPEDA MOTOR YAMAHA VEGA RR

<em>Vehicle performance will decrease with increasing age of use, it can be seen from the weakening initial torque and the power of the vehicle when driving unlike the initial production. Magic ring a tool produced by CV. SUMI INOTECH which utilizes the overlapping process of valves. The magic ring mounted on the header exhaust manifold serves to restore exhaust gas that is wasted from the overlapping process to return to the combustion chamber so as to produce more power to push the piston and the performance of the vehicle will increase. This study used an experimental method with the research object of Yamaha Vega RR in 2014. The magic ring used was the 16 mm magic ring serial number (ASJS032125) and the same magic ring but the inner diameter was enlarged to 18 mm. Using descriptive quantitative data analysis, it was found that the use of the magic ring added torque from the standard condition of 7.42% in the use of the 16 mm magic ring and increased by 7.12% in the use of the 18 mm magic ring. The power of the vehicle increased only 0.24% when using the magic ring 16 mm, and the use of the magic ring 18 mm power remained the same as the standard condition.</em>

Breaking female stereotypes: Bianca Pitzorno’s girls and the power of literature on gender socialization

Bianca Pitzorno is one of Italy’s most famous children’s writers. Her works – more than forty books translated into different languages – often address topics linked to gender identity and femininity. Pitzorno’s novels for children usually depict non-canonical female characters: rebel, dynamic and intelligent young girls that fight against adult injustice in order to affirm their agency.
 The paper aims to explore female portrayals in Pitzorno’s novels and their potential educational impact in reconsidering gender stereotypes and roles from an early age. Literature is one of the most influential tools in the construction of gender ideals and gender socialization. Consequently, positive female models – as Pitzorno’s characters – should be offered to young readers from an early age in order to foster an inclusive collective imagination about femininity.
 For instance, Extraterrestre alla pari [Aliens on par] (1979) directly focuses on gender issues telling the story of a young alien coming from a planet where young boys and girls do not know their sex until they reach adulthood. For this reason, they are considered as gender-neutral beings. Likewise, L’incredibile storia di Lavinia [Lavinia and the magic ring] (1985) ironically retells Hans Christian Andersen’s The Little Match Girl working on humor and female agency. Finally, Principessa Laurentina [Princess Laurentina] (1990) deals with adolescence and family dynamics, offering different portrayals of female identity, from a young age to adulthood.
 Because of the brilliant and nontraditional depiction of female figures and the deconstruction of gender canon in a simple but captivating way, Pitzorno’s novels should be internationally considered in primary school curriculums as a starting point to introduce gender diversity in reading programs and to discuss gender issues with the help of adult figures such as teachers, educators and parents.

Символика кольца в пьесе Н.С. Гумилева «Дитя Аллаха»

The article is devoted to the study of the symbolic meaning of the image of the ring in the play by N.S. Gumilyov “Child of Allah”. The cultural semantics of “Solomon’s ring”, its rootedness in the traditions of the East, are traced. It is concluded that the ring in the play serves as a connecting link between the divine name and poetic inspiration. The article first pointed to a number of uses of the ring in Ancient Iran. Such a diverse semiotics of the ring found its refraction in the play N.S. Gumilyov “The Child of Allah”. In this play, the ring plays a key role. The ring defines the world poles of good and evil. Performed by Oriental motifs, Gumilyov’s play at the same time does not repeat or develop any of the semantic definitions of the ring mentioned in the article. In the article we turn to the mysterious meaning of the ring in this work. Thus, the ring in the play “the Child of Allah” has an Association with the magic rings of Eastern fairy tales.

PENGARUH PEMASANGAN MAGIC RING PADA EXHAUST MANIFOLD TERHADAP KONSUMSI BAHAN BAKAR SEPEDA MOTOR YAMAHA VEGA RR TAHUN 2014 DENGAN MENGGUNAKAN VARIASI BAHAN BAKAR

<p>Vehicle technology is still not effective in saving fuel consumption. Various attempts have been made to reduce fuel consumption in motorized vehicles. This is done to prevent the depletion of the availability of fossil energy, especially petroleum. One of the emerging technological innovations is the Magic ring. Magic ring is a technology to reduce fuel consumption by reducing the diameter of the exhaust manifold channel with a special design. This study aims to determine the effect of the use of the Magic ring on the fuel consumption of motorized vehicles (gasoline engines). This study used an experimental method on a single cylinder 110cc four-stroke gasoline motorcycle engine. This study uses three types of fuel, RON 90, RON 92, and RON 98 for fuel consumption in ml / minute, and data analysis using quantitative descriptive. The results of this study are looking for the most efficient fuel consumption in each type of fuel at 1500 rpm. The results show that there is an effect of installing a Magic ring in saving fuel consumption. Evidence of this is the increase in the value of fuel consumption savings with a percentage of 23.3% at RON 90, 21.5% at RON 92, 19.4% at RON 98. The test results show that the installation of Magic rings is effective in reducing fuel consumption and can used in the future to save fuel.<br /><br /></p>

A parallelogram metallomacrocycle bearing self-catenation and its derivative supramolecular isomerism.

Macrocycle-based architectures are of importance in synthetic chemistry. Here, a novel parallelogram metallomacrocycle Fe2(LA)2 with reversible structural transformation was designed and synthesized. The template-free metalla[2]catenane [Fe2(LA)2]2 could be obtained by changing the concentration and has been monitored on the basis of NMR analysis. By redesigning the metallo-ligand, a catenane-like intersected parallelogram assembly with two shape-persistent supramolecular isomers was achieved. This work develops the field of terpyridine-based macrocycle system research and is valuable for obtaining other types of supramolecular isomerism.

A Magical Ring from the Environs of Legio and Kefar-ʻOthnay, Israel

An intact magical silver ring set with a green chalcedony magical gem was discovered near present-day Megiddo prison. The ring has a tubular hoop and a low box-bezel. It’s metal is engraved on all sides with symbols and charaktères and perhaps some letters. On the ring’s round, flat base appears a swastika within a square. A standing male-deity holding an upright snake is engraved on the gem, surrounded by further charactères and a magical name. The ring is of a known type. It dates from the later 3rd to the early 4th century. The precise name and identity of its standing deity are unknown. Our study has shown that a number of powerful syncretized deities are embedded it this figure; that the snake held by its god is the Chnoubis snake; and that the ring plus its gem were created to function as a powerful, protective, beneficial, theraputic item. Every aspect of this ring was calculated to enforce and strengthen the ring’s medical-magical function and aim. Together with an earlier one found of a silver magical ring in the site of Kefar-ʻOthnay with a depiction of the Anguipede on its gem, these two rings show that among the population and soldiers of the VI Ferrata legionary base and the nearby village of Kefar-ʻOthnay were believers in the authority of magi and the power of healing and overall help and protection against evil powers and maladies embedded in magical gems and rings.

Of Magic Rings and Talking Lions

This article discusses J. R. R. Tolkien's and C. S. Lewis's understanding of the social function of fairy tales. The topic is approached through the study of Tolkien's essay "On Fairy Stories" and Lewis's book On Stories: and other essays on literature. To illustrate these scholars' arguments, this research draws on examples from their fictional works The Lord of the Rings and The Chronicles of Narnia. At the end of the work, it is argued that the everlasting appeal and relevance of fairy stories are connected to specific characteristics inherent to the genre.

The Analysis of J.R.R.Toliken’s Ecological Responsibility Consciousness in The Lord of the Rings

J.R.R.Tolkien, a distinguished Oxford University professor who specialized in the study of language development and early medieval literature. He has written famous books like The Hobbits and The Silmarillion, but his literary reputation mainly rests upon his fantasy-romance novel, The Lord of the Rings. Since its publication, the novel has got great popularity among western countries. It was even selected as “the most popular book in history” on line. As Hollywood director Peter Jackson’s film The Lord of the Rings was filmed, a zealous love for “the magic ring” has wiped throughout the world. No matter scholars or common enthusiasm readers both show great passion for this novel. Archetypal analysis and the origin of myth in Middle-earth, fantasy technique etc. have been widely used to review or interpret the text of this novel. Based on the intertextual interpretation of J.R.R.Tolkien’s life experience and the novel, and through the viewpoint of ecological responsibility consciousness this paper attempts to explore Tolkien’s seek of homeland, which reveals Tolkien’s country yearning and furthermore presents his ecological value.

Design of Software Defined Radios Based Platform for Activity Recognition

Recently, activity recognition and classification (ARC) of human activity opens new research area in the field health care, security, and privacy of human society. Specifically, the promise of device-free activity recognition platform attracts researchers to develop platform to ensure the correct detection of activity recognition. The technologies, such as Wi-Fi, GSM, and radars, do not require installing cameras or wearable sensors for activity monitoring and recognition. Therefore, this device-free technology has gain popularity in health care and safety measurement systems. Traditional ARC systems depend on wearable sensors such as magic rings and vision technology such as a Microsoft Kinect. In the future, researchers are striving to reduce such devices and targeting a promising device-free sensing system. In this paper, a software-defined radio platform was designed for the detection of human activity. The extensive experiments were performed in the laboratory environment by using two Universal Software Radio Peripheral (USRP) to extract the wireless channel state information (WCSI). The 64-Fast Fourier Transform (FFT) point’s Orthogonal frequency division multiplexing (OFDM) signal was used to determine the WCSI. The design of the proposed system can be used for multiple applications due to scalability and flexibility of the software-defined hardware.

Design of Alternating Current Abrasive Magnetic Fluid Jet Generator Based on Permanent Magnet

During the test of DC(direct current) abrasive magnetic fluid technology,many bubbles and noises were generated near the graphite electrode , and the yellow green liquid was produced, which affected the further test.Through the study of graphite electrode, it was found that NaCl solution magnetic fluid produced hydrogen and chlorine gas after electrolysis. At the same time, chlorine gas dissolved in water to form yellow green liquid.The magnetic field of neodymium boron permanent magnet was equivalent to a mechanical stirring, which inhibited the production of chlorine gas.According to the difference of impressed current system, the abrasive magnetic fluid jet technology was divided into DC and AC(alternating current) .There was no electrode in AC abrasive magnetic fluid jet technology, so no gas or noise would be produced.The rotating magic ring permanent magnet produced alternating magnetic field, acting on the abrasive magnetic fluid to form an induced current.Under the action of the magnetic field, the electromagnetic force was applied to move along the circumferential direction to promote the motion of the abrasive magnetic fluid.

First-principles study on atomistic and electronic structures of boron–nitrogen and boron–phosphorous nanoribbons, nanorings, and nanotubes

We computationally study the atomistic and electronic structures of boron–phosphorous (BP) nanoribbons (NRBs), nanorings (NRGs), and nanotubes (NTBs) by comparison with similar boron-nitride (BN) nanostructures. We consider polyacene (PAC)-type NRBs. First-principles calculations demonstrate that BN PAC-type finite NRBs conserve the flatness of the NRB plane whereas BP NRBs result in bendings along the NRB plane. Rolling of an NRB (head to tail) produces an NRG. Accordingly, a specific NRG with a “magic ring number” is produced in the BP system whereas BN-NRGs freely produced various ring numbers as well as cyclacene systems. Stacking of NRGs further produces an NTB whose electronic characteristics are determined by the chiral index. However, the band-edge states of heteroatom NTBs are controlled by the difference in the on-site energies rather than by the chiral index.

Narrative Structure of Evgeny Baratynskyys Tale 'Persten' (The Ring) in the Context of the Evolution of Russian Tale within 1820s-1840s

The study is focused on narrative specific of Baratynsky’s “unexplained” tale “Persten” (The Ring) in comparison to, on the one hand, the material assembled within the frameworks of HSE project Russkaja Povest 1825–1850, and, on the other, taking into consideration the material of previous period (the first third of the 19th century). Using the research facilities provided by poetics of expressiveness the author describes and defines the functions of different techniques concerning the plot, composition and narrative. The author demonstrates how Baratynsky combines the widespread plots (‘magic ring’, ‘devil in love’, ‘adultery’, etc.) in a very complicated narrative model that diminishes the power of every plot line and deceives readers’ expectations. Using the database of most frequent plots (“Russian Tale, 1825-1850”, 800 texts), the paper compares “Persten” with typical and very rare plot schemes and demonstrates that Baratynsky’s tale manifests the marginal line of Russian fiction which mainstream came to choose another direction.

Rising above a cause-and-effect stance in mathematics education research

Rene Descartes was strongly influenced by the cuckoo clock: the idea of a mechanism with logical and necessary consequences as a metaphor for human experience. Pierre-Simon Laplace applied this mathematically by claiming that if he had all the initial conditions at some point in time, then he could predict everything subsequently. The cuckoo clock mechanism metaphor, complete cause-and-effect, underpinned the enlightenment and the industrial revolution, because mechanisms can be engineered to be independent of time, place, situation and conditions. So why is this aspect of Descartes and Laplace still influential in mathematics education? Why does so much research in mathematics education keep chasing a will o’ the wisp, pursuing a magic ring whose presence would provide a primary explanation and predictor of effective teaching and proficient learning? This continues even though it is commonly acknowledged that learning is highly contingent, and that mathematics learning is especially so. It is influenced by time, place, situation, conditions, dispositions, recent and long-term past experience, and colleagues, the topic, pedagogical actions, .... The list continues. Nevertheless, people continue to ask questions such as ‘‘what does effective teaching of mathematics look like?’’ and ‘‘What must teachers know in order to teach effectively?’’. This despite rich experience that what ‘knowledge’ teachers have displayed in the past, what actions they have written essays about or even enacted in the past, does not enable prediction of what actions will be enacted in the future. Even shared development of a lesson does not lead to the same lesson being enacted, because the people and the situation are subtly different (Kuhlberg 2007). It is strange that in a world in which attempts to construct walking robots by controlling all their components failed, whereas allowing feedback loops to operate enables the mechanism as a whole to walk reasonably naturally, we persist in trying to control things

The Fairy Way of Writing: Shakespeare to Tolkien

The Fairy Way of Writing: Shakespeare to Tolkien