Silver Ring Research Articles

Les Objets Religieux Des Immigrés Subsahariens à Casablanca : Un Usage Spirituel Et Culturel"

This article investigates the lives of Sub-Saharan immigrants in Casablanca, Morocco's economic capital, where many seek economic opportunities and safety. It explores the personal objects carried by these immigrants from their home countries, which hold significant religious and social importance and are integrated into their daily lives and ritual practices. Drawing on the works of sociologists such as Appadurai and Baudrillard, the study delves into the cultural meanings of these objects. Through ethnographic interviews, stories like those of Jean Noël, an Ivorian who values seawater for its healing and protective properties, and Amina, a Nigerian student who uses herbs to alleviate headaches, illustrate how these objects maintain a connection to their cultural and spiritual identities. Mamadou, a Senegalese trader in Casablanca, uses a silver ring engraved with "ALLAH" in his therapeutic practices, incorporating Quranic verses to soothe his clients' pain, highlighting the religious and cultural significance of these objects in their daily lives.

Flexible silver ring SERS substrate array fabrication by vortex evaporation method and its application for high sensitive detection of sulfonamides residues in water

Flexible surface-enhanced Raman scattering (SERS) substrates have driven much attention in Raman detection of environmental pollutants due to their unique advantage of sensitivity, low-cost and fast sampling. However, it is still a high challenge for fabricating flexible SERS substrate with high reproducibility and sensitivity. In this study, we developed a novel silver nanoparticle assembly method based on vortex evaporation method to batch assemble multiple silver ring (SR) SERS substrate array on a parafilm. The flexible SR SERS substrates were uniformly covered with active silver nano-islands, which significantly improved the Raman signal intensity of the targets by 126 folds and showed 5 times Raman enhancement compared with the common SERS substrate by direct evaporation method, and also represented the unique bending response properties of flexible substrate. The Raman detection for sulfonamide residues in water with SR SERS substrate represented high sensitivity, which limits of detection for Sulfapyridine and Sulfacloropyridazine were 9.46 and 9.3 × 10−8 mol/L, respectively. The quantitative relationships were obtained in wide linear range of 4 orders with good accuracy and stability. The flexible SR SERS substrate array can be large-scale prepared with good repeatability, stability, and low-cost, which has promising applications for trace contaminants detection in water environment.

An improved residual oxygen detection method by using axis-sectional multi-reflection within optical-length-limited pharmaceutical vials

In-situ and accurate residual oxygen concentration detection in glass vials is an urgent topic in the pharmaceutical manufacturing industry, as the headspace oxygen would render the inner drug composition spoiled. In this paper, an oxygen detection method is designed based on wavelength-modulated tunable diode laser absorption spectroscopy (TDLAS-WMS). To be specific, a concept of coating the outer surface of the vial with a high-reflection silver ring film is firstly proposed, which assists the laser to achieve Axis-Sectional Multi-Reflection (ASMR) in the narrow space of the vial to break through the optical path limitation of traditional Direct-Transmission (DT) detection method. We abbreviate ASMR with the reflection number of n as n-ASMR. The experimental results prove 2/4/6/8-ASMR performs better stability and detection limit of 0.058%/0.054%/0.058%/0.046% with the integrate time of 28.9s/14.6s/4.76s/5.60s, compared with 0.22% for DT with 33.8s. Specially, 2-ASMR performs great application potential for its best ability to resist angle change.

Giant 2D-chiroptical response in an achiral metasurface integrated with black phosphorus.

In this work, we proposed a black phosphorus (BP) achiral metasurface and theoretically study the chiroptical response arising from extrinsic 2D-chirality in the mid-infrared regime. The achiral metasurface is composed of a monolayer BP sheet sandwiched by a silver ring array and dielectric spacer stacking on a silver substrate. The giant circular conversion dichroism (CCD) of the achiral metasurface is allowed at oblique incidence for the cooperative interaction of BP anisotropic surface plasmon modes and localized surface plasmons in metal rings, and the integrated BP can dynamically modulate the chiroptical response by controlling the doping concentration of BP. Furthermore, we found that a multiband phenomenon for CCD response occurs when tuning the thickness of the spacer. The proposed hybrid achiral metasurface provides more flexible opportunities to realize active polarization modulator, biosensor and chiral detection.

Homiletic Symbolism in Heimskringla

This paper examines the hypothesis that the home-coming episode in St. Olaf’s Saga (ch. 32–34) in Heimskringla is an allegory based on homiletic symbolism. The episode is about Olaf’s return to his home in Norway after many years abroad and is one of the events that define the onset of his mission to control and Christianise Norway. Olaf arrives at his mother and stepfather’s home in a vivid, personal and detailed narration, imbued with action and excitement. It is harvest-time, and Olaf’s stepfather, Sigurdur sýr, king of Ringerike, is busy overseeing the harvest activity. He is walking around a field with two other men, dressed in a blue tunic and leggings, a grey cloak and a wide grey hat, a cloth over his face and a staff in his hand with a gilded silver cap on the top, surmounted by a silver ring. He is then summoned by Ásta – his wife and Olaf’s mother – to come home quickly as she has been informed that her son will be arriving soon. Sigurður puts on his royal outfit, including a scarlet robe, spurs of gold and a golden helmet, and goes home with thirty men. Meanwhile, Ásta and twenty others prepare a welcoming feast. She sends envoys to the neighborhood with an invitation to the banquet while the hall is prepared. Everything is just ready when Olaf arrives at his homestead with a retinue of a hundred men. He is greeted by Sigurdur, Ásta and the local crowd, and is led to the throne by his mother. The potential hagiographic nature of St. Olaf’s Saga, combined with the detailed narrative containing many potential symbols in the form of numbers, colours, artefacts and action, give a strong impression of allegory. There is a likely allusion to Mark 6:7 when Ásta assigns twelve people in six pairs to prepare the hall, and again when she sends four people in four directions to invite magnates to the event, echoing the angels in Mark 13:27 who were sent to bring the chosen ones from the four winds. The arrival of Olaf with his hundred men would seem to be a key event. The number 100 (or 120 if a long hundred is meant) is interpreted by Bede, for example, as a symbol of happiness of the elect in eternal life and directly associated with the biblical parables of the lost sheep and the lost coin, which in Christian patristic tradition alludes to the Redemption, the restoration of humanity as the tenth celestial order, a key feature in the history of salvation. This number, one hundred, here associated with a saint, is flanked by many other potential symbols. One is that the combined flocks of Olaf (100+1), Sigurdur (30+1) and Ásta (20+1) make 153 people, a biblical number that has been associated with the elect in the heavenly land, i.a. by Gregory the Great. An examination of how other potential symbols group with Sigurdur and Ásta, reveals a consistent pattern. Sigurdur’s symbols associate him with heaven, the Trinity and the eternal word of God. Typological allusions associate Sigurdur and his staff with Moses and Judah, whose antitype is Christ, while the staff and the ring represent the Cross and the Church, respectively. Sigurdur also reflects the pilgrims in Emmaus, an iconographic motif based on Luke 24:13–53 that involves the resurrected Christ. On the arrival of Olaf, Sigurdur’s colours turn from blue, silver and grey to red and gold. This appears to indicate God’s word with full wisdom (gold), God’s love and the Holy spirit (red, which also signifies martyrdom). The transformation would signify the changes brought about by the advent of Christ (and his parallel, Olaf). Ásta is firmly linked to the four directions and the numbers two and four, which usually signify motherhood and earthly, missionary aspects of the Church, the Gospels and the evangelists. The home-coming episode was most likely understood as an allegory in ecclesiastical circles in medieval times. It uses symbols and images that relate to multiple iconographical features, focusing on escatological aspects of the history of salvation. The episode permits a coherent allegorical interpretation which equates St. Olaf with Christ as the Redeemer. Raudulf’s thattur, another short story about St. Olaf, incorporated in the longer version of his saga but which does not appear in Heimskringla, is also an allegory. Olaf is here placed centrally in an allegorical building modelled on a multidimensional cosmos, taking the symbolic seat of Christ in the Heavenly Jerusalem (Einarsson 1997, 2001, 2005). Both stories indicate a dedicated activity of creative allegorical writing intended to reinforce and nurture the veneration of the saint.

Custom-made silicone finger prosthesis: A case report

Restoring the digit with a esthetic prosthesis with passive function will enhance patients’ acceptance and confidence. A 23-year-old female patient reported to the Department of Prosthodontics, Regional Dental College, Guwahti, Assam, India, with a chief complaint of a partially missing index finger on her left hand. She wanted to get it replaced because she was getting engaged. The prosthesis was inserted, and a wide silver ring over the margin of the finger prosthesis was placed at the mid part of middle phalanx to disguise the junction line. The patient expressed high satisfaction with the end result and the retention of the prosthesis.

Optimization for Reduction in Defects of Brazing of Shock Loop Tube to Resonator

Abstract: Rejection Y variable shows the rejection percentage and optimization phase done with the help of Minitab software. Various design parameters have been selected to identify for the optimization like heating time, the weight of silver brazing wire, and power rating of the equipment extra. Improve phase revealed that the Weight 0.311 Gms, Heating time 11 Sec, Power rating 5 KW is good in the better condition as compared with the current condition. In the end, the conclusion shows that the bulk supplies of 0.3mm silver ring received and started in the production line and the work standard has been established. By doing daily routine activity checks, after one month there is a drop in the rejection and the cost regarding this has also been achieved. Keywords: Reduction in Defects of Brazing, Shock Loop Tube, Resonator, DMAIC approach, Resonator Optimization

A Tunable Plasmonic Refractive Index Sensor with Ultrabroad Sensing Range for Cancer Detection

Contribution of quantum dots (QDs) and nano dots (NDs) in boosting the plasmonic behavior of noble metal nano cavity structure and its refractive index (RI) sensing is proposed across an ultrabroad RI range via first, second, and third near-infrared windows. An optimized refractive index sensor based on plasmonic-photonic interaction arising from the extraordinary optical transmission (EOT) through nano cavity is reported. Herein, the sensing platform comprised of an array of silver square nano disc and ring having cavity in between. By the introduction of dots, the absorption profile of entire system is dramatically modified resulting from the plasmon-exciton/plasmon-plasmon coupling and thereby attains higher tunability in sensing parameters together with an enhanced figure of merit (FOM), all confirmed by finite element method (FEM) stimulations. The tailorable hybrid structure demonstrating absorbance enhancement and resonant peak shift with cavity area, embedded material permittivity, presence of dots, etc., proposes an open platform for optical-based chemical and biosensing applications.

The migration period in Iovia–Botivo - a 5th century grave with a trepanation

During systematic research in Ludbreg (Roman Iovia-Botivo) in 2011, a 5th century grave built of tegulae was discovered within the Roman stratum. The deceased has a trepanation on his skull and was accompanied by a single object, a silver ring buckle. The newfound grave has undergone radiocarbon and radiological analysis. The discovery of this grave has prompted a revision of previous graves of the Migration Period found in Ludbreg, discovered in previous research, as well as the accidental find of a grave found between Ludbreg and Selnik. Available data on these graves have been analysed and contextualized within the complex historical period of Late Antiquity and the Migration Period of northern Croatia. Analysis of the graves in question has shown that Roman Iovia ceased to function during the 5th century.

PATIENT-REPORTED OUTCOMES FOR USE OF SILVERSPLINTS IN OSTEOARTHRITIS OF THE HAND.

Pain, stiffness and joint deformity can result in significantly reduced hand function in people with osteoarthritis. Characteristic finger deformities in osteoarthritis are swan neck deformity and boutonnière deformity. Several studies have reported that an orthosis decreases pain and increases function during daily activities for patients with arthritis. The aim of this study was to review patient-reported outcomes of current conservative therapeutic management with silver ring splints (silversplints) for patients with osteoarthritis of the hand. There was a 76% improvement in overall daily functioning and a 74% reduction in pain. Several questions concerned daily activities with different types of hand function and with different types of grip and use of fingers. The results show a major improvement in both the more open grip of the hand and activities requiring fine motor skills. The ability to use force with the hand, even when wearing an orthosis, is an important result. Patients who experienced “no problems or minor problems” had significantly increased functioning in several activities of daily living, but the largest improvement in functioning was seen in “household chores” (243%), “opening jars” (150%) and “lifting groceries” (143%). Overall, silversplints appear to serve as a suitable support for the joints in osteoarthritis of the hand, providing pain relief by preventing the joint from moving through its full range of motion. Use of silversplints to treat patients with osteoarthritis of the hand should be considered as a useful, non-surgical method.LAY ABSTRACTThis study of patient-reported outcome measures regarding the use of silversplints for osteoarthritis of the hand provides insight into the additional care and quality of life provided by the use of an orthopaedic medical aid. The aims of this study are to measure the effectiveness of silversplints in daily life and to validate the efficacy of using orthopaedic medical aids. Between October 2018 and June 2020, a total of 2,231 patients with osteoarthritis were provided with silversplints and were asked about the effectiveness of the splints 3 weeks after they first started wearing them. This large-scale study found that the use of silversplints contributed to overall daily functioning, reduced pain, and increased the possibility of performing daily activities. Silversplints appear to serve as a suitable support for joints, providing pain relief and freedom of movement, but preventing the joint from moving through its full range of motion.

Yarkovskoe 1 hillfort – monument of the XII–XIV centuries in the Tobolsk Irtysh River region

Known archaeological sources indicate migration the groups of the Urals population into Western Siberia during the XII–XIV centuries. However, this process continues to be poorly studied, which can be partially corrected by referring to the archaeological materials of the Yarkovskoe 1 hillfort. Pre-revolutionary researchers knew this monument of Tobolsk Irtysh River region, but its excavations began relatively recently. The 2015 excavation revealed a significant number of individual finds from copper, bronze, silver and iron. Quite often fragments of ceramic dishes, bone and stone products were found. The closest analogies to the implement complex of the Yarkovskoe hillfort were found in the cis-Urals sites of the Rodanovo archaeological culture. The authors' assumption is confirmed by the findings of ornamented ceramics, crucible, bronze pendants, a silver ring, padlocks and a needle bar and other items. However, not all features of the material culture of the local population have direct analogies among the Rodanovo antiquities, which indicate that a synthesis of a number of cultures took place in the Tobolsk Irtysh region. Among the finds, one can distinguish both things of clearly Siberian origin and those brought from the territory of the Volga and Central Asia. The authors distinguish that the main component of the population of the Yarkovskoe 1 hillfort were the Rodanovo culture population who came from beyond the Urals. The Rodanovo people who arrived from the trans-Urals, as they moved to the lower reaches of the Tobol could include foreign cultures, including the Yudino culture, as well as the local Kintusovskoye culture components.

Uniformization of Mass Sensitivity Distribution of Silver Electrode QCM.

Quartz crystal microbalance (QCM) is a highly sensitive mass sensor and has been widely used in many fields. However, the nonuniform distribution of mass sensitivity will lead to poor reproducibility of QCM, which is not conducive to the application of QCM in some fields. Considering the effect of electrode shape, size, and material on mass sensitivity distribution, we found that for an AT-cut QCM with a fundamental frequency of 10 MHz, when the inner and outer diameters of silver ring electrode and the electrode loading factor are 2 and 5 mm and 0.0033, respectively, an approximately uniform mass sensitivity distribution can be obtained. The plating experiment in which rigid silver films were plated on the surface of electrode verified the uniformity. The uniform mass sensitivity distribution will make the application of QCM more convenient; the reproducibility can also be improved. This design of QCM will enrich QCM products and facilitate the application of QCM in various fields.

Tunable Anisotropic Perfect Enhancement Absorption in Black Phosphorus-Based Metasurfaces

In this work, we theoretically propose an anisotropic metasurface absorber, unit cell of which consists of a continuous monolayer black phosphorus (BP) sheet, sandwiched between a circular silver ring and a dielectric layer stacking on a silver substrate. Numerical results reveal that perfect enhancement absorption can be achieved in both armchair and zigzag directions, in which the resonant absorption peaks occur at different wavelengths due to the anisotropic property of BP. The calculated results by finite-difference time domain (FDTD) simulations have a good agreement with the coupled-mode theory. The physical mechanism of the perfect absorption is attributable to the critical coupling effect. Furthermore, the anisotropic perfect absorber not only exhibits tunable characteristics by varying the electron doping concentration, but also shows a wide-angle tolerance. In addition, our proposed absorber can achieve an arbitrary number of absorption bands by setting a suitable thickness of the dielectric layer. These results may have great potential applications in spectral imaging and photodetectors in the mid-infrared region.

CIF/IFC Silver Ring Ceremony Lakehead University Class of 2020

CIF/IFC Silver Ring Ceremony Lakehead University Class of 2020

TYPICAL FEATURES OF A ROMAN IMPERIAL DENARIUS HOARD FROM THE CHERNYAKHIV CULTURE TERRITORY – THE CASE OF THE SKYPCHE HOARD FROM UKRAINE

The hoard found in 2018 at Skypche in the western region of Ukraine included seventy Roman denarii of the 1st and 2nd century AD (Trajan to Commodus) and a presumably silver ring. The hoard is typical for the territory of Ukraine occupied in the later phases of the Roman period and the Migration period by the people of the Chernyakhiv culture identified with a federation of Gothic and non-Gothic peoples under the Gothic leadership. Among the coins in the hoard was one barbarian imitation of a Roman denarius and seven denarii weighing of less than 2 g identified initially as of official issue. Some of the lightweight denarii could be copies of Roman denarii. It is not unlikely that these copies were manufactured within the Barbaricum.

TOPONYMICS OF RUSSIA IN THE SYSTEM OF RKI LESSONS AT MILITARY UNIVERSITY

The article is devoted to the methodology of teaching toponyms in the system of classes in Russian as a foreign language on the example of the theme “My Country”. Popular tourist routes of Russia are considered: the Golden Ring, Silver Ring, Sayan Ring and others. The names of cities, rivers, lakes, etc. are being studied.

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.

Strong Exciton-Plasmon Coupling and Hybridization of Organic-Inorganic Exciton-Polaritons in Plasmonic Nanocavity**Supported by the National Key Research and Development Program of China under Grant No 2016YFA0301300, the National Natural Science Foundation of China under Grant Nos 11574035 and 11374041, and the State Key Laboratory of Information Photonics and Optical Communications.

We investigate strong exciton-plasmon coupling and plasmon-mediated hybridization between the Frenkel (F) and Wannier–Mott (WM) excitons of an organic-inorganic hybrid system consisting of a silver ring separated from a monolayer WS2 by J-aggregates. The extinction spectra of the hybrid system calculated by employing the coupled oscillator model are consistent with the results simulated by the finite-difference time-domain method. The calculation results show that strong couplings among F excitons, WM excitons, and localized surface plasmon resonances (LSPRs) lead to the appearance of three plexciton branches in the extinction spectra. The weighting efficiencies of the F exciton, WM exciton and LSPR modes in three plexciton branches are used to analyze the exciton-polaritons in the system. Furthermore, the strong coupling between two different excitons and LSPRs is manipulated by tuning F or WM exciton resonances.

Material influence on GHz split-ring resonator plasma ignition performance

Split-ring resonators have been popularized by their application in metamaterials, but their ability to concentrate electric fields has also made them useful as microwave plasma generators. Despite the existence of much work on plasma generation using ring resonators, a comparative study of the effect of different materials on plasma generation performance has been absent. This work focuses on the study of material effects on ring resonators' microwave properties and plasma generation performance at pressures ranging from 4 to 100 Torr. To achieve this end, screen-printed silver and gold ring resonators are studied due to their high conductivity, relatively low reactivity, and differences in conductivity and work function. The surface morphology and chemistry of the ring resonators are studied using optical profilometry, scanning electron microscopy, and X-ray photoelectron spectroscopy. It is found that the main factor influencing performance between these two materials is Q-factor, which is determined using both conventional bandwidth measurements and measurements of conductivity. Q-factor is further isolated by modifying a silver ring resonator such that its Q-factor matches gold ring resonators. In addition, a film formed on the silver resonators after plasma exposure provides an opportunity to study a material, which, unlike gold, is quite different from silver. With the film present, plasma generation performance is decreased with increasing severity as pressure is decreased—20% more power is required for breakdown at 4 Torr. This change is qualitatively consistent with a model of microwave plasma breakdown where boundary effects are expected to increase as pressure is decreased.

On the plasmonic properties of a symmetry-breaking silver nanoring structure

This work reports on a study regarding the plasmonic properties of a symmetry-breaking silver nanoring structure, in the wavelength range of 0.6–4.5 µm. A broken silver ring with a certain angle, as well as a full ring composed of silver and other metallic/dielectric materials, are proposed. The extinction efficiencies of the nanostructure are numerically calculated with several parameters being varied, including the broken angle, the inner and outer radii, and the thickness of the broken ring, as well as the material in the composite full ring. Multiple plasmonic resonances are observed in the extinction efficiency curves, which are attributed to the quadrupolar, octupolar, and hexadecapolar resonance modes that are revealed by the electric field distributions. The results demonstrate that the high-order modes can be altered, by varying the value of the broken angle of the ring. It is also illustrated that the resonance wavelength and the full width at half maximum of certain high-order plasmonic resonance peaks can be tuned in the wavelength range studied, by adjusting the values of the geometrical parameters of the nanoring. The plasmonic characteristics of the symmetry-breaking nanoring structure revealed in this study, provide a great platform for the designs of plasmonic devices utilizing the high-order plasmonic resonances. Besides, it is also proposed a scheme to switch the device between the multi-wavelength and single-wavelength modes.