Ball Of Yarn Research Articles

The dual built-in electric fields across CoS/MoS2 heterojunctions for energy-saving hydrogen production coupled with sulfion degradation

Substituting the sluggish oxygen evolution reaction with the sulfur oxidation reaction can significantly reduce energy consumption and eliminate environmental pollutants during hydrogen generation. However, the progress of this technology has been hindered due to the lack of cost-effective, efficient, and durable electrocatalysts. In this study, we present the design and construction of a hierarchical metal sulfide catalyst with a gradient structure comprising nanoparticles, nanosheets, and microparticles. This was achieved through a structure-breaking sulfuration strategy, resulting in a “ball of yarn”-like core/shell CoS/MoS2 microflower with CoS/MoS2/CoS dual-heterojunctions. The difference in work functions between CoS and MoS2 induces an electron polarization effect, creating dual built-in electric fields at the hierarchical interfaces. This effectively modulates the adsorption behavior of catalytic intermediates, thereby reducing the energy barrier for catalytic reactions. The optimized catalyst exhibits outstanding electrocatalytic performance for both the hydrogen evolution reaction and the sulfur oxidation reaction. Remarkably, in the assembled electrocatalytic coupling system, it only requires a cell voltage of 0.528 V at 10 mA cm−2 and maintains long-term durability for over 168 h. This work presents new opportunities for low-cost hydrogen production and environmentally friendly sulfion recycling.

Crafts in the Time of Coronavirus

Crafts in the Time of Coronavirus

Yarn ball knots and faster computations

We make use of the 3D nature of knots and links to find savings in computational complexity when computing knot invariants such as the linking number and, in general, most finite type invariants. These savings are achieved in comparison with the 2D approach to knots using knot diagrams.

Historical Events as ‘Magic Yarn Balls’

Abstract Historical analogies are widely invoked to characterize contemporary events. As we argue that historians should play a central role in assessing these analogies, or at least, that history should offer organized models to think about them, we present a framework for productively engaging with historical analogies in the public debate, policy discussions and elsewhere. First, we introduce the ‘magic yarn ball’ as a central metaphor to capture the textured complexity of historical phenomena in terms of similarity and difference. Second, we propose a general framework inspired by this metaphor to engage with historical analogies, centered on interrogation, individuation, and prospection. We apply our model by assessing analogies between the appointment of Adolf Hitler as chancellor of Germany in 1933 and the inauguration of US president Donald Trump in 2017.

The yarn ball of deontic phenomena in public sphere

The yarn ball of deontic phenomena in public sphere

New in Translation: Children’s Lit in Translation from Korea

New in Translation:Children’s Lit in Translation from Korea Ruth Ahmedzai Kemp (bio) Click for larger view View full resolution Kim Hyo-eun I Am the Subway Trans. Deborah Smith Scribe In the children’s market, very little is translated into English from languages beyond western Europe, and until very recently Korean children’s books, for all their vibrancy and stunning artwork, were no exception. And so the sudden appearance of five originally Korean-language picture books in English translation in 2021 was something of an event. The interest in the Korean children’s market may have been spurred by innovative illustrator, animator, and artist Baek Heena being named the 2020 laureate of the Astrid Lindgren Memorial Award, a major international award honoring the body of work of children’s book creators. Whatever the reason for the long-awaited increase in investment in translating Korean picture books, it is a treasure trove of artistry and fresh perspectives that English readers inherit with these authors and illustrators from South Korea. “The unique lives of strangers you might never meet again – ba-dum, ba-dum, ba-dum, ba-dum – are all around you, every time you take the train.” Carrying an average of 7.2 million people per day on the city lines alone, the Seoul subway network is one of the longest in the world and reaches far beyond the city limits. In this lyrical exploration of place and population, the voice of the subway train mingles with the thoughts of its passengers, revealing the varied lives of commuters, grandparents, dreamy workers, and weary children. Each character is introduced with a tantalizing peek through the parting subway doors, before we turn to a double-page spread offering a glimpse of their life, the highs and lows, the humdrum and the hectic. At Guui station, Mr. Jae-sung the cobbler strides on, reminding us to glance at the passengers’ feet and infer what we can of their character from their choice of footwear. At City Hall station, on steps Granny with a pungent package, filling the carriage with the strong, salty smell of the sea. Turning the page, we learn of her lifelong love of diving, catching octopus and abalone for her daughter and grandchildren. With stunning watercolor illustrations that capture the spirit and detail of urban life, this book weaves through life’s generations as it winds its way along the subway track. Winner of the Professional Children’s Publishing category of the World Illustration Awards 2021, this best-selling Korean picture book is destined to garner a global audience in Deborah Smith’s delightful translation. [End Page 6] Click for larger view View full resolution Lee Juck One Day Illus. Kim Seung-youn Trans. Asuka Minamoto, Lee Juck & Dianne Chung Enchanted Lion Books Grandpa is a tailor, a craftsman, a member of the community, and his presence is everywhere, until suddenly, one day, Grandpa is gone. His shoes sit in the closet, waiting to be worn. At the water fountain, where locals queue up to fill their bottles and canisters, everybody asks about Grandpa. Why did he leave so suddenly without telling his friends? In a tender exploration of the shock of grief and the impossibility of fathoming the enormity of a loved one’s absence, this gentle picture book explores the comfort to be found in the objects left behind, the smell of his jacket, as well as in the thought of Grandpa assuming his rightful place among the stars. Kim Seung-youn’s illustrations offer a simple yet stylishly drawn aesthetic that imbues everything with the warmth of Grandpa’s felts and fabrics. From quiet rooms bereft of Grandpa’s presence, we’re transported on floating balls of yarn into a reassuring, imaginative space filled with the buttons, needles, and threads of his craft, increasingly vibrant with Grandpa’s passion, his energy and creativity, as he lives on amidst the pin-cushion planets and shoe-shaped shooting stars of the cosmos. Click for larger view View full resolution Baek Heena Magic Candies Trans. Sophie Bowman Amazon Crossing Tong Tong plays on his own or with his dog, Marbles. How do you ever know what the other...

Carbon Yarn-Ball-Entangled SiO2 Anode with Excellent Electrochemical Performance for Lithium-Ion Batteries.

Various nanoscale SiO2 and their composites have demonstrated superior electrochemical performance as anodes for lithium-ion batteries. However, both the battery production and real applications require the integration of nanoscale SiO2 into micrometer-sized secondary particles while preserving their excellent stability and conductivity, which remains a great challenge. In this work, a unique carbon yarn-ball structure is successfully synthesized that entangles nanoscale SiO2 together to build a micrometer-sized secondary particle. The hook-like carbon wires closely adhere to individual SiO2 nanoparticles, which constitute the basic unit of the yarn-ball structure. The entangled carbon wires create a network of electron conduction highways for SiO2 , and the yarn-ball structure provides a resilient 3D matrix that can effectively buffer the anisotropic volume changes of SiO2 during Li ion insertion/extraction. Under 0.1 A g-1 , the carbon yarn-ball-entangled SiO2 can deliver a 1297 mAh g-1 discharge capacity with a small irreversible capacity of 82 mAh g-1 . The entangled carbon yarn ball firmly maintains its structural integrity during high-rate cycling (1 A g-1 ), which gives rise to a large accessible capacity (709 mAh g-1 , 90.7% retention for 500 cycles), superior coulombic efficiency (>99.9%), and excellent structural stability.

The cat and the ball of yarn. Interweaving the threads of the history and restoration of the Villa Savoye (1970- 1986)

El ensayo, el primero de dos escritos, reconstituye los acontecimientos de la generación de historiadores que, entre los años 70 y mediados de los 80, estudiaron e interpretaron las obras escritas y proyectadas por Le Corbusier. Esta imagen forma parte de la lectura de las diferentes fases de restauración de la Villa Savoye dirigidas por el arquitecto jefe Ivan Gury tras una primera realización de Jean Dubuisson, abriendo una época de interminables restauraciones de autor de lo moderno. Los autores también abordan la compleja cuestión de la interpretación de las obras de Le Corbusier en la fase de formación de la historia de la arquitectura contemporánea, cuando las fuentes están casi universalmente disponibles y la literatura sobre el tema se dispara. El texto explora materiales y documentos inéditos, ofreciendo una nueva interpretación tanto de la Villa Savoye como de los textos sobre el maestro franco-suizo.

On Second Thought

On Second Thought

On Second Thought

On Second Thought

Glans clitoris innervation: PIEZO2 and sexual mechanosensitivity.

The clitoris is a leading player in female sexual arousal, if not the main protagonist. Despite this role, studies performed on this structure with specific neuroanatomical techniques are few. This study focuses on glans clitoris innervation, with special emphasis on sensory corpuscles and the presence of the mechanotransducer protein PIEZO2 in these structures. Six glans clitoris samples were obtained at autopsy covering an age spectrum between 52 and 83years old. Several types of nerve terminations including free nerve endings, genital endbulbs as well as Meissner-like corpuscles and Pacinian corpuscles, but not Ruffini corpuscles, were found. Although corpuscular morphology in the glans clitoris was subtly different from the cutaneous digital counterparts, their basic composition was comparable for both Pacinian and Meissner-like corpuscles. Genital endbulbs showed heterogeneous morphology, and the axons usually exhibited a typical "wool ball" or "yarn ball" aspect. Some of them were lobulated and variably encapsulated by endoneurial elements (65%); from the capsule originate septa that divides the genital endbulbs, suggesting that they are found in clusters rather than as single corpuscles. In addition, most corpuscles in the glans clitoris showed axonal PIEZO2 immunoreactivity, thus, suggesting a mechanical role and molecular mechanisms of mechanosensibility similar to those of digital Meissner's corpuscles. Our results demonstrate that sensory corpuscles of the glans clitoris are similar to those of other glabrous skin zones, as most genital organs are characterized by clusters of corpuscles and the occurrence of the mechanoprotein PIEZO2 in the axons. These findings strongly suggest that PIEZO2 participates in erotic and sexual mechanical sensing.

Corona XVI – horseshoes and hand grenades

Corona XVI – horseshoes and hand grenades

Nanomechanical properties of steric zipper globular structures

The term amyloid defines a group of proteins that aggregate into plaques or fibers. Amyloid fibers gained their fame mostly due to their relation with neurodegenerative diseases in humans. However, secreted by lower organisms, such as bacteria and fungi, amyloid fibers play a functional role: for example, when they serve as cement in the extracellular matrix of biofilms. Originating either in humans or in microorganisms, the sequence of amyloid proteins is decorated with hexapeptides with high propensity to form fibers, known as steric zippers. We have found that steric zippers form globular structures on route to making fibers and exhibit a characteristic force-distance (F-D) fingerprint when pulled with an atomic force microscope (AFM) tip. Particularly, the F-D pulling curves showed force plateau steps, suggesting that the globular structures were composed of chains that were unwound like a yarn ball. Force plateau analysis showed that the F-D characteristic parameters were sequence sensitive, representing differences in the packing of the hexapeptides within the globules. These unprecedented findings show that steric zippers exhibit a characteristic nanomechanical signature in solution in addition to previously observed characteristic crystallographic structure. Getting to the fundamental interactions that govern the unzipping of full-length amyloid fibers may initiate the development of antiamyloid methods that target the physical in addition to the structural properties of steric zippers.

Rescue-like Behaviour in Mice is Mediated by Their Interest in the Restraint Tool

Acting without the expectation of compensation is called prosocial behaviour. Since prosocial behaviour requires high cognitive and social abilities, it has been thought to be only shown by primates. Although prosocial behaviour has been recently reported in rats, there are still questions regarding this finding. We demonstrated rescue-like behaviour in mice in a previous report. In this study, we investigated the motives underlying rescue-like behaviour for constrained cage-mates among mice. We prepared either a tube containing a ball of yarn or an opaque tube and assessed whether mice displayed the same rescue-like behaviour shown in the case of tube-restrained cage-mates. Mice did not open the lid of the tube containing the ball of yarn but opened the opaque tube lid. Mice showed a high interest in the tube in which the cage-mate had been restrained and prioritized staying in this tube rather than rescuing additional cage-mates. Oxytocin, which increases empathy, had no effect on the lid-opening behaviour. Thus, the rescue-like behaviour of mice is not based on empathy but is related to social interest in the cage-mate and the tube itself. These results suggest that rodent lid-opening behaviour may not conclusively prove the presence of prosocial behaviour.

A nanoscale "yarn ball"-like heteropoly blue catalyst for extremely efficient elimination of antibiotics and dyes.

Fenton system is one of the most popular methods to eliminate antibiotics and dyes in aquatic environment. However, the existed Fenton system is limited by various factors such as potential second pollution and narrow pH range. In this study, we report that the bottlenecks for high strength antibiotics and dyes wastewater treatment at a wide pH range can be well tackled by the nanoscale "yarn ball"-like Mo/W-containing heteropoly blue (HPB) catalyst Mg2Ti6Mo23O119SiW12 (1). This novel catalyst displayed extremely efficient elimination for several typical organic contaminants such as malachite green (MG), tetracycline (TC) and methyl orange (MO). Compared with other materials reported in previous papers, the catalytic performance of 1 in degradation of the organic contaminants of high concentrations increased several times. More than 90% of antibiotics and dyes are degraded within 60 min. Electron spin resonance (ESR) experiments and UV-vis spectra confirmed that the catalytic mechanisms of 1 could mainly ascribe to the 1/H2O2 process and the possible photocatalytic oxidation of adsorbed H2O by holes (h+) in the valence band (VB) of 1 surface generated ·OH for extremely efficient degradation of organic contaminants. This work widens the optimal pH values up to neutral condition and it's significant for the expansion of the heterogeneous Fenton-like catalyst family and its application in the field of water treatment.

Forecasting Sales Cotton and Polyester Yarn at PT. Agung Sejahtera Sukaraharja Karanganyar

This study aims to determine the sales forecasting and polyester cotton yarn in January 2015 by using the Least Square Method and Method of Quadratic Trend. As well as to determine the most efficient methods of forecasting to predict sales of cotton yarn and polyester products at PT Agung Sejahtera. From the results of analysis based on the calculation of sales forecasts yarn products with sales data from January to December 2014 using the least squares method and quadratic trend method, in which the quadratic trend method is more suitable because it has a value of SKP lows while the predictive value of product sales yarn using trend quadratic result of cotton yarn 40 weaving of 1,538 ball, cotton yarn 40 amounted to 597.504 ball spandex, polyster yarn weaving amounted 411.348 40 ball, 30 Weaving Polyester yarn ball at 336.588.

Effect of deposition potential on efficiency of TiO2/Cu2O photoelectrochemical cells

TiO2/Cu2O heterojunction solar cells have been successfully deposited on Ti foils using the electrochemical route. The effect of deposition potential on the efficiency of TiO2/Cu2O heterojunction solar cells has been studied. The SEM images show yarn ball like morphology of Cu2O layer. The XPS spectra indicate the formation of TiO2/Cu2O heterojunction from their corresponding oxidation states. Raman spectroscopy displays single anatase phase of TiO2 in presence of Cu2O. From J–V characteristics of TiO2/Cu2O heterojunction, the solar cell parameters such as Jsc, Voc, Pmax, fill factor and efficiency have been measured. The heterojunction solar cell shows 41% maximum fill factor and power conversion efficiency 0.21%.

A Bedtime Yarn by N. Winstanley

Winstanley, Nicola. A Bedtime Yarn, illustrated by Olivia Chin Mueller, Tundra Books, 2017.This picture book explores the dreams of Frankie, a little bear who has trouble falling asleep at night. To help him sleep, his mother provides a ball of yarn for him to hold while she works on the other end, knitting a special surprise for Frankie. Each ball of yarn is a different colour with its own story that takes the young bear on incredible adventures. For instance, a sea-green yarn invokes a dream that takes him deep into underwater caverns and a brown yarn reminds him of cake as a result of his upcoming birthday celebrations. Every colour depicts a new dream and unique experience. The story concludes with Frankie’s mother surprising him with a multi-coloured blanket that was made from all the different colours of yarn that he held. Beautiful artwork illustrated by Olivia Chin Mueller accompanies the story, including strands of coloured yarn that surround the images. The author creatively used colour as the starting off point for representing the wide variety of dreams that the little bear encounters. This children’s book teaches readers about different colours and the imaginative element of dreams. This book is suitable for children from Kindergarten to Grade 2. Recommended: 3 out of 4 starsReviewer: Janice KungJanice Kung is a Public Services Librarian at the University of Alberta, John W. Scott Health Sciences Library. She obtained her undergraduate degree in commerce and completed her MLIS degree in 2013. She believes that the best thing to beat the winter blues is to cuddle up on a couch and lose oneself in a good book.

Multiple faces of contemporary hand knitting

Knitting and crocheting are traditional textile techniques with great significance both in history and modern times. Similar to other textile techniques, knitting has developed into a diversified industrial sector, comprising the production of knitted fabrics, knitwear, hosiery and fashion accessories. At the same time, contemporary knitting and crocheting became hobbies as well as arts-and-crafts activities, extending to various areas of work and leisure. Historical and traditional ethnic knitting and crocheting patterns keep inspiring designers’ collections and also other industrial products. Not so long ago, knitting was seen as an ordinary and unchanging indoor activity and, in its domestic history, it was the preserve of older women making products of dainty work and taste. Today, knitting deals with urban population of all classes. The popularity of leisure hand knitting is increasing; moreover, hand knitting is becoming more and more widespread among young people. With the emergence of artistic and handicraft markets, hand-knitting and crocheting developed into a profitable market activity. Positive effects of hand knitting have become increasingly important - from generating creativity and innovativeness, through knitting and socializing in groups, to medical and therapeutic effects as well as social and global connections. Yarn bombing, yarn storming or graffiti knitting has been used to describe urban social practices of knitted objects placed, or tagged, in public spaces. Knitting became means of communication, artistic and social expression and statement. The advantage of hand knitting is its mobility. One can knit almost everywhere, and for hand knitting, only a ball of yarn and knitting needles are required. Handknitted products have nice touch, they are custom-made and therefore personalized.

Multi-scale tracking reveals scale-dependent chromatin dynamics after DNA damage.

The dynamic organization of genes inside the nucleus is an important determinant for their function. Using fast DNA tracking microscopy in S. cerevisiae cells and improved analysis of mean square displacements, we quantified DNA motion at time scales ranging from 10 milliseconds to minute and found that following DNA damage, DNA exhibits distinct sub-diffusive regimes. In response to double-strand breaks, chromatin is more mobile at large time scales but, surprisingly, its mobility is reduced at short time scales. This effect is even more pronounced at the site of damage. Such a pattern of dynamics is consistent with a global increase in chromatin persistence length in response to DNA damage. Scale-dependent nuclear exploration is regulated by the Rad51 repair protein, both at the break and throughout the genome. We propose a model in which stiffening of the damaged ends by the repair complex, combined with global increased stiffness, act like a "needle in a ball of yarn", enhancing the ability of the break to traverse the chromatin meshwork.