Sewing Method Research Articles

1916년 출판 재봉교과서 『朝鮮服裁縫の栞』 연구

This study aims to analyze the 1916 sewing textbook 『Joseon clothing sewing guide (朝鮮服裁縫の栞)』 to explore the early history of Hanbok education and research in Korean schools. It involves reviewing the sewing education content from the time of its publication, detailing bibliographic information, and comparing the table of contents with similar books from that era. The findings reveal that, until the 1910s, schools had a “Sewing” subject specifically for girls, teaching general clothing construction, including cutting and sewing techniques. This book, published on August 15, 1916 as the 11th issue of the Joseon Education Research Society magazine, was prepared by the Gyeongseong Girls' Middle School’s teachers. It reflects collaborative research by Japanese and Korean instructors on Hanbok sewing. It includes on 10 Hanbok items, such as men's and women's jeogori(jacket), men's baji(pants), chima(skirt), duru-magi(coat), dan-sok-got(women’s drawers), women's baji(pants), magoja(over-jacket), pungchabaji, and tosu(arm warmers), with specifications for measurements, cutting, and sewing methods. Compared to earlier works like 『Buinpilji』 (1908), this book omits certain garments like haengjeon but introduces others like children's pungchabaji and magoja. In 『New compilation of sewing reference』 (1925) and 『Complete book of Joseon sewing』(1925), additional garments such as jeoksam and vests were included. Furthermore, 『New compilation of sewing reference』 also incorporated skirt waistbands. In conclusion, although this book is written in Japanese, it was used as a textbook in schools at the time and holds significance as the first modern sewing book. Its content and structure served as a foundation for latter sewing textbooks.

Sewing: A New Quilting Suture Method for Nasal Septum Repair

A deviated nasal septum leads to congestion and headaches. Surgery is the primary treatment, requiring careful postoperative septum positioning to prevent bleeding and hematoma. The study compared this method with nasal packing and traditional nasal septum suturing regarding surgical time, patient pain, nasal obstruction, and bleeding after septoplasty. The surgical time for nasal packing was significantly shorter than that for the other 2 suturing methods (P < 0.0001), but there was no statistically significant difference between the two suture methods (P = 0.1358). The Visual Analog Scale scores showed that the pain in the packing group was significantly higher than that in the other 2 groups within 2 days after surgery (P < 0.0001). The pain during suture removal was significantly higher in the packing group than in the “sewing group” (P < 0.0001). The number of injuries to the outer wall of the nasal cavity by continuous suturing was significantly higher than that by sewing (P < 0.0001). Tearing within 2 days after surgery was significantly higher in the packing group than in the other 2 groups (P < 0.0001). Compared with nasal packing, nasal septum suturing can significantly reduce postoperative pain and tearing, improve comfort, and do not increase bleeding. The newly described nasal septum sewing method in this study has no difference in surgical time compared with the traditional suturing method and can reduce injuries to the outer wall of the nasal cavity. In addition, it is painless and easy to remove during suture removal.

Comparative Performance Evaluation of Ultrasonic Welding and Conventional Sewing Methods in Knitted Fabrics

Abstract When transforming two-dimensional fabric pieces into three-dimensional clothing with different sewing methods, choosing the proper technique is one of the primary factors affecting the quality of the product. Within the scope of the study, five different types of knitted fabric alternatives, which are frequently used in products for daily use, are discussed. The conventional joining methods (lock stitch and overedge stitching) and ultrasonic welding were evaluated in terms of joint performance. All the evaluations made in terms of seam strength and seam efficiency showed that the overedge stitch is more performant in sewing knitted fabrics. One of the critical advantages of ultrasonic welding, the absence of the need for needle and thread and the absence of these costs, necessitated the evaluation of one more feature of the joining methods in the study. In this context, the energy consumption values of all the methods were evaluated. As a result, the energy consumption value of ultrasonic welding is approximately 1.3 times higher than overedge stitching and approximately 10.7 times higher than lockstitching.

Chronic stress promotes gastric cancer progression via the adrenoceptor beta 2/PlexinA1 pathway.

Chronic stress is a common emotional disorder in cancer patients. Chronic stress promotes progression of gastric cancer (GC) and leads to poor outcomes. However, the underlying mechanisms remain not clear. Herein, we explored the possible mechanisms of chronic stress in GC progression. The Cancer Genome Atlas (TCGA) datasets were analyzed for differentially expressed genes. Clinical data of GC were evaluated for their association with PlexinA1 using TCGAand Kaplan-Meier-plotter databases. Chronic stress of GC patients was evaluated using the Self-Rating Anxiety Scale and Self-Rating Depression Scale. Chronic unpredictable mild stress (CUMS) was used to induce chronic stress in mice. Gastric xenograft tumor was constructed using the sewing method. Chronic stress-like behaviors were assessed using light/dark box and tail suspension tests. Protein expression was detected using immunohistochemistry and Western blot analysis. Analyses of TCGA and the Kaplan-Meier-plotter databases showed that patients with high levels of PlexinA1 in GC had worse overall survival than those with low levels of PlexinA1. A total of 36 GC patients were enrolled in the study, and about 33% of the patients had chronic stress. Compared with patients without chronic stress, higher expression levels of adrenoceptor beta 2 and PlexinA1 were observed in patients with chronic stress. The tumor size in mice under CUMS was significantly increased compared with the control mice. Adrenoceptor beta 2, PlexinA1, N-cadherin, and alpha-smooth muscle actin, as well as Ki67 were highly expressed in the tumors of CUMS group. However, E-cadherin was lowly expressed in the tumors of CUMS group. Importantly, chemical sympathectomy with 6-hydroxydopamineor treatment with a selective β2 adrenergic receptor antagonist (ICI118,551) could reverse these effects. Our findings suggest that chronic stress plays an important role in GC progression and there is a potential for blocking the epinephrine-β2AR/PlexinA1 pathway in the treatment of GC.

Low-velocity impact behavior of warp-knitted spacer fabric reinforced with spiderweb shaped stitch

Warp-knitted spacer fabrics are a widely considerable material owing to its unique sandwich structure and superior performance, employed across diverse fields such as military, transportation, construction, and personal protection. However, they are inevitably subjected to impacts in practical applications. This work investigated the influence of surface layer structure on the impact resistance property of fabrics by drop weight tests. The damage tolerance of warp-knitted spacer fabrics was also studied through repeated impact experiments. To further improve the impact resistance property of the fabric, a simple sewing method was proposed in this work. Inspired by the spiderweb structure, a spiderweb shape was sewn on the fabric. The results demonstrated that hexagonal mesh as the impact surface provided better impact resistance for the fabric. As the number of impacts increases, the deformation of the fabric gradually intensifies, and the fabric is completely damaged during the fourth impact. The stitch can enhance its impact resistance, and the shape of the stitch had a significant influence on the impact resistance performance.

A study of high-strength and durable cotton fabric joining via laser-induced polymerisation of silica-sol photosensitive resin

Cotton is the most popular fabric used in human clothing and garment, and its joining process is still based on the traditional sewing method. In this study, a new approach to cotton fabric joining via UV-laser induced polymerisation was investigated, which involved preparation of a silane coupling agent (3-Aminopropyl) triethoxysilane (3-Aps) for surface modification of cotton fabric, and formulation and application of a silica-sol photosensitive resin as the filler. The developed resin consists of two other silanes, Silane A174 and KH560 so as to provide chemical bonds with the cellulose of cotton surface and the 3-Aps modified cotton. The results showed that the silica-sol resin not only produced self-polymerisation due to photothermal effect, but also joined with the fiber surfaces by chemical bonding, which enhanced the surface interaction with cotton fibers and obtained excellent mechanical properties. The heat accumulation at joint was detected in real-time using the infrared thermography, which ensured the fast drying and curing of the silica-sol containing resin. With 4 % silica-sol content in resin, the interfacial bonding was optimal for APS-Fabric, and the tensile force of the 2 mm joint reached 300 N exceeding the ultimate breaking strength of the cotton fabric itself. The fabric joint was demonstrated to withstand at least 20 washing cycles without cracking. This new fabric joining technique provides both strong bonding and sufficient flexibility in the joints, resulting in high strength and durable cotton fabric joining, which has a broad application prospect in the field of apparel.

Experimental study on the effect of scanning path on skin tissue properties of femtosecond laser welding.

To study the influence pattern of femtosecond laser scanning path on the welding effect of skin tissue, this experiment analyzed the influence of scanning path on the surface morphology, degree of thermal damage, tensile strength, and microstructure of skin samples after skin attachment by designing nine scanning paths to weld skin tissue. The results showed that the skin samples connected by interrupted parallel mattress eversion sewing method with d = 0.2 mm showed no obvious color changes in morphology, the skin samples were connected on both front and back sides, the tensile strength was the highest, reaching 12.80 N/cm2 , the thermal damage parameter was low at 1.08 × 10-2 , the microstructure had obvious directionality, and the texture was clear and uniformly distributed.

Fabric‐Based Smart Metasurface

AbstractFabric presents several advantages including excellent flexibility, lightweight, bend resilience, breathable properties, and significant price advantage compared to commercial low‐loss boards, providing a natural advantage for the preparation of flexible electromagnetic (EM) devices and wearable systems. A key challenge when using fabric as the substrate for active devices lies in the contradiction between the poor high‐temperature resistance of fabric materials and the welding requirements for semiconductor components, leading to a significant gap between flexible and traditional RF technology. Benefiting from the unique fiber structure of fabric materials, a conjecture is creatively proposed for integrating lumped components onto fabric substrates through the sewing method and successfully verifying its validity and stability. As an application, a fabric‐based smart metasurface (FSM) is designed and realized for potential portable EM protection applications. The proposed FSM has the advantage of good flexibility, low cost, and a high strength‐to‐weight ratio. By carefully designing the structure of the metasurface and also the sensing module, large‐angle stable EM performance is achieved, and the FSM can function well even under highly distorted conditions. The proposed method and product inspire promising application aspects in wearable electronics, portable EM protection, and related flexible RF technologies.

Flexible graphene pressure sensor based on sponge sewn with cotton

High sensitivity and large working range are both essential for flexible pressure sensors. However, there are irreconcilable contradictions between sensitivity and working range. Herein, we manufactured flexible pressure sensors whose sensitivity and working range can be designed customly. The sensors are fabricated by soaking sponges sewn with cotton in graphene inks and their sensitivity and working range can be freely adjusted. Depending on the sponge density and sewing method, the obtained sensors could exhibit different features: some have high sensitivity (up to 4.44 kPa−1), some have large working range (up to 50 kPa) and some are linear, but all of them have good flexibility and outstanding stability. These sensors show excellent performance when applied to walking detection, wrist pulse detection and paper piano. The flexible and changeable performance of the sensors along with the low-cost and scalable fabrication makes them competitive in wearable electronic devices.

Polyamide-Based Adhesive Lascaux 5350 in Textile Conservation—Properties, Stability and Use

Lascaux Polyamid-Textil-Schweisspulver 5350 is a hot-melt adhesive with promising properties for applications in textile conservation. The study presented aims at examining the properties and long-term stability of this adhesive. It also deals with the possibilities of its use for bonding proteinaceous and cellulosic textiles and describes particular methods of using the adhesive either in the form of powder or as a prepared adhesive film. The adhesion techniques are compared with conventional sewing methods commonly used to consolidate damaged textile objects. In addition, the study also deals with the reversibility of the adhesive treatments.

Clinical significance and postoperative outcomes after pulmonary vein isolation for atrial fibrillation in mitral valve surgery

Atrial fibrillation is the most common tachyarrhythmia associated with mitral valve disease, resulting in significant morbidity and mortality. Atrial fibrillation is a marker of advanced cardiovascular disease and an independent predictor of death. As a large number of patients undergoing mitral valve operations are associated with chronic atrial fibrillation, pulmonary vein isolation procedure with cut and sew method can be concomitantly performed with a mitral valve operation and it is enough to improve the quality of life after operation by eliminating the morbidity associated with chronic atrial fibrillation. The aim of this study is to find out the immediate postoperative outcomes of the patients with known mitral valve disease with atrial fibrillation who are undergoing mitral valve surgery with concomitant pulmonary vein isolation at our institution. The perioperative risk factors such as older age, duration of atrial fibrillation, the size of the left atrium, and the mitral valve pathology were evaluated for their clinical significance. Preoperative, intraoperative, and postoperative variables were retrieved and analyzed retrospectively. The outcomes were compared between these subgroups using various statistical tools. Conversion to normal sinus rhythm was more significant in the younger age group (<45 years) as compared to the older age group. Seventy-eight percent patients (n = 117) were free from atrial fibrillation at the time of discharge. The overall mortality was 4% (n = 6). There was no procedure-related death.

A case study on manufacturing electronic-embedded garments with stitched surface-mount fabrication

Electronic-embedded textiles or e-textiles preserve the form factor of typical apparel but have the ability to provide required electrical performance, enabling expanded functionality and comfort to the wearer. However, durable, reliable, and scalable manufacturing of e-textiles has remained one of the major challenges to large-scale development of garment-integrated applications of wearable technology. Moreover, there is a gap in our understanding of the impact of integration of electronics into textiles and challenges involved in manufacturing e-textile garments in mass. In this paper, we present the first manufacturing case study for electronic-embedded garments, to the best of our knowledge. We first developed a sensor-integrated fire-fighter turnout gear coat as an example e-textile product. Next, we performed a pre-production study to investigate the new variables that emerge from the prototyping phase to the production phase. To evaluate the challenges of manufacturing e-textiles in mass as compared to non-electronic garments, we produced 40 pieces each of regular and temperature sensing fire-fighter turnout gear coat liner garments using stitched surface-mount fabrication methods. The study results show that the average manufacturing time and cost to produce a sensor-integrated thermal liner are 3.27 and 3.44 times higher, respectively, than producing a regular thermal liner garment, given that all the materials, labor, and standard sewing methods and machines remain constant. Additionally, we show the impact on requisite worker skills and training and quality assurance methods to produce e-textile garments compared to regular garments. We illustrate high-potential areas where strategic product and production design that leverages existing machines and tools can reduce the impact that embedded technologies have on labor, equipment, and cost. We conclude that the stitched surface-mount manufacturing method could potentially be used as an alternative for manufacturing e-textiles in mass.

YouTube® Platformunda Sunulan El Yapımı Maske Videolarının COVID-19 Pandemisinde Güvenilirliği

Abstract
 Introduction: In this study, we aimed to determine whether these instructive videos on handmade masks published on YouTube® are compatible with the criteria issued by Centers for Disease Control and Prevention (CDC) and World Health Organization (WHO).
 Material and Methods: The present study investigated 184 videos yielded by a search on YouTube® with the keywords ‘‘DIY mask, handmade mask, fabric mask’’ during the period from January 01, 2020 to April 01, 2020. The videos were categorized according to the criteria recommended by WHO and CDC. Audience interest parameters such as total members, views, likes, dislikes, comments made, video sources and upload date were evaluated.
 Results: 66.8% (n=123) of the instructive YouTube® videos concerning handmade masks were uploaded by craft-DIY-tutorial pages, 57.1% (n=105) included the sewing method, 97.3% (n=179) included unsuitable material usage as per CDC, 98.4% (n=181) were not compatible with CDC directives, 99.5% (n=183) used non-fluid-resistant material, 78.3% (n=144) involved masks that collapse against the mouth and 95.7% (n=176) involved gaps between the face and the mask.
 Conclusions: We found that the videos published on YouTube® are not reliable sources of information about handmade masks.

Synergistic work of photo-thermoelectric and hydroelectric effects of hierarchical structure photo-thermoelectric textile for solar energy harvesting and solar steam generation simultaneously

Human body microenvironment adaptive power generator with multifunction is attractive for the development of portable wearable devices. Here, a PEDOT-based photo-thermoelectric textile is developed via a two-step strategy, where the PDA is introduced to induce PEDOT to form the hierarchical structure. Thus, the top surface of the PEDOT-based textile owns the excellent thermoelectric performance (PF = 88.70 nW/(m•K2)), and the bottom surface holds a great photothermal effect that can reach about 80 °C under 175w IR light. In addition, the PEDOT-based textile has 51.87% of solar conversion efficiency under 3 sun. A assembled textile solar panel fabricated by the sewing method renders a voltage output of 1.37 mV under 500w illumination. Interestingly, with the synergistic work of photo-thermoelectric and hydroelectric effects, the wetted textile solar panel can produce a voltage of ~ 12.5 mV and a power of 9.81 μW under 500 W illumination. Meanwhile, it can also generate the solar steam of ~ 3 g within 1 h. Therefore, such wet textile solar panels can harvest solar energy and generate solar steam at the same time, which provides a route to fabricate a smart wearable energy harvester that can be used for human body humidity management.

Esophagus two-step-cut overlap method in esophagojejunostomy after laparoscopic gastrectomy.

Esophagojejunostomy is a challenging step in laparoscopic gastrectomy. Although the overlap method is a safe and feasible approach for esophagojejunostomy, it has several technical limitations. We developed novel modifications for the overlap method to overcome these disadvantages. Forty-eight consecutive gastric cancer patients underwent totally laparoscopic total gastrectomy or laparoscopic proximal gastrectomy with double-tract reconstruction at our institution from January 2019 to April 2020 using the overlap method with the following modifications. The esophagus was initially rotated by 90° counterclockwise, followed by transection of two-thirds of the esophageal diameter. The unstapled esophagus was then transected with a harmonic ultrasonic scalpel to enable esophagostomy at the posterior side of the esophagus. A side-to-side esophagojejunostomy was then formed at the posterior side of the esophagus using an endoscopic linear stapler through the right lower trocar. The common entry hole was closed via hand sewing method using V-Loc suture. This procedure was termed "esophagus two-step-cut overlap method." Only one patient suffered from esophagojejunal anastomotic leakage but subsequently recovered after conservative treatment. Patients did not experience anastomotic bleeding or stricture. Our modified overlap method provides satisfactory surgical outcomes and overcomes several technical limitations, such as entering the false lumen of the esophagus, unnecessary pollution caused by nasogastric tube, and unintended left crus stapling during anastomosis.

Technologies of 3D Reinforcing of Polymer Composite Constructions by Textile and Sewing Methods

Technologies of 3D Reinforcing of Polymer Composite Constructions by Textile and Sewing Methods

All-fabric-based multifunctional textile sensor for detection and discrimination of humidity, temperature, and strain stimuli

A simple sewing method was employed to integrate the resistive and capacitive sensors into one device. According to the negative or positive responses of the resistance and capacitance, the applied stimulus can be well-identified.

The Use of Different Sewing Methods in Tilapia (Oreochromis niloticus) Fish

In this study, it is aimed to compare the sewing methods in wounds created for different purposes in the field of aquaculture. For this purpose, Tilapia fish, which took the second place after carp in the inland waters fish breeding of hot countries, were used. In the study, Control group (n = 3), simple suture (n = 3), U suture (n = 3) and X (Sultan) suture (n = 3) applications were performed. The fish were subjected to 7 days of adaptation before starting the study. During the study, feeding was done once a day with Tetra Discus food. For the formation of cut wounds, scales were removed in Tilapia fish under anesthesia, and 2 cm long incision were performed. As a result of the study, it was observed that the cut wounds were closed on the 6th day in the U suture group, at the end of the 7th day in the control group and simple suture groups, and the 9th day in the X suture group. It was observed that the absorbable suture materials were absorbed in all fish in which they were applied, but in the X suture group, 1 fish was absorbed at the end of the 9th day. It is concluded that it is healthier to prefer simple suture and U suture primarily in areas such as marking, remote sensing, monitoring and management of fish methods, and fish health.

Impact mechanisms of supercritical CO2–ethanol–water on extraction behavior and chemical structure of eucalyptus lignin

A compounded medium of supercritical CO2, ethanol, and water (SEW) was used to extract lignin from eucalyptus fiber and the mechanism of the extraction was studied. Compared with the extraction method based on high-temperature ethanol (HTE), the lignin yield of the SEW method was 49.7% higher with higher average molecular weight. Physical and chemical synergies occurred during the extraction process. SEW compound medium penetrated eucalyptus fiber cell walls because of strong permeability, while the fast discharge of the compounded medium facilitated efficient lignin dissociation and removal. Carbonic acid formed from CO2 and water under high temperature and pressure can provide an acidic environment to effectively degrade hemicellulose. Formaldehyde formed from CO2 and ethanol in the process also prevented condensation of the extracted lignin fragments. The obtained lignin had high content of β-O-4 linkages and syringyl units.

Face coverings and mask to minimise droplet dispersion and aerosolisation: a video case study

To evaluate the effectiveness of the Centers for Disease Control and Prevention (CDC) recommended one- and two-layer cloth face covering against a three-ply surgical mask, we challenged the cloth covering...