Denim Jeans Research Articles

Simulation and measurement of electromagnetic wave propagations along a wearable e-textile metasurface transmission line

This study introduces a compact wearable metasurface transmission line operating at 2.45 GHz, utilizing spoof surface plasmon polariton (SSPP). The design incorporates a periodic arrangement of hook unit cells and a tapering structure to enhance coupling efficiency between the microstrip feed line and the metasurface transmission line. For its implementation, a dielectric substrate composed entirely of cotton denim jeans is employed, along with e-textile conductive traces and a ground plane. Electromagnetic wave propagation along the transmission line is simulated, and the primary wave mode and associated propagation characteristics are analyzed. Both simulation and measurement results confirm the successful performance of the metasurface transmission line for on-body signal transmissions.

DEVELOPMENT OF A SUSTAINABLE BUSINESS MODEL FOR DENIM

Globally, over a billion dollars are spent on denim jeans each year, and that number is still growing. As a result of this expansion, the production of waste in the systems is also increasing. According to the Environmental Protection Agency (EPA), roughly 5% of all landfill space is textile waste, including denim. One of the least ecological industries in the world is the denim industry. This calls for more intensive interventions in the design of sustainable development, as it calls into question the key criteria of sustainability. This topic has been covered by various models of industrial sustainability, although these models focus on solving global problems, assuming small improvements and growth. Consequently, a sustainable business model approach is necessary to drastically rethink how firms should operate to support system-level sustainability. This paper will provide comprehensive background information on the denim business and its operations before offering some notable case studies of well-known companies that use environmentally friendly practices. The result of this document will be a comprehensive analysis and building of a sustainable business model for the denim sector.

Production and partial characterization of endoglucanase by Thermothelomyces heterothallicus PA2S4T and its application in biopolishing of denim jeans

Production and partial characterization of endoglucanase by Thermothelomyces heterothallicus PA2S4T and its application in biopolishing of denim jeans

Artificial-Neural-Network-Based Predicted Model for Seam Strength of Five-Pocket Denim Jeans: A Review

This study explores previous research efforts concerning prediction models related to the textile and polymer industry, especially garment seam strength, emphasizing critical parameters such as stitch density, fabric GSM, thread type, thread count, stitch classes, and seam types. These parameters play a pivotal role in determining the durability and overall quality of denim jeans based on cellulosic polymer. A significant focus is dedicated to the mathematical computational models employed for predicting seam strength in five-pocket denim jeans. Herein, the discussion poses the application of AI for manufacturing industries, especially for textile and clothing sectors, and highlights the importance of using a machine learning prediction model for sewing thread consumption, seam strength analysis, and seam performance analysis. Therefore, the authors suggest the significant importance of the machine learning prediction model, as future trends anticipate advancements in AI-driven methodologies, potentially leading to high-profile predictions and superior manufacturing processes. The authors also describe the limitation of AI and address a comprehensive model of risk outlines of AI in the manufacturing-based industries, especially the garments industry. Put simply, this review serves as a bridge between the realms of AI, mathematics, and textile engineering, providing a clear understanding of how artificial-neural-network-based models will be shaping the future of seam strength prediction in the denim manufacturing landscape. This type of evolution, based on ANN, will support and enhance the accuracy and efficiency of seam strength predictions by allowing models to discern intricate patterns and relationships within vast and diverse datasets.

Consumption of Sustainable Denim Products: The Contribution of Blockchain Certified Eco-Labels

Consumers’ growing interest in the environmental and social impacts of products has increased demand for sustainable fashion items, particularly denim. Emerging technologies such as blockchain technology and labeling certifications have been developed to address sustainability issues by improving supply chain transparency and efficiency. This research investigates the trade-offs consumers make when purchasing sustainable denim jeans and the impact of sociodemographic factors on their decision-making process. Employing a conjoint analysis approach, four attributes were examined: price, brand name, types of materials, and eco-labeling. The results indicated that price is still the most influential factor, followed by material, brand name, and eco-label. Although eco-labeling is of little importance to consumers, it offers valuable insights for effective communication of sustainable practices. Consumers prefer denim with a blockchain eco-label, followed by a fair-trade certificate. This research enhances the understanding of consumer behavior toward sustainable consumption and offers strategic insights for denim producers and marketers.

Prioritizing customer requirements for men’s denim jeans through factor analysis and fuzzy analytic hierarchy process

PurposeThe main purpose of this paper is to identify, screen and prioritize customer requirements (CRs) for men’s denim jeans. Moreover, the effect of demographic factors on the primary evaluation criteria has been examined.Design/methodology/approachThe study was initiated by the growing complaints about denim jeans products of a local manufacturing company. First, 24 CRs were identified from the literature and customer complaints. Then, a survey was conducted to rate the identified CRs and solicit more CRs through closed-ended and open-ended questions, respectively. From the survey, 368 usable responses were collected while the participants were shopping in 14 local retail shops. After analyzing the data using factor analysis, univariate and multivariate analysis of variance (MANOVA), and content analysis, the resulting 15 criteria were prioritized by experts’ pairwise comparisons employing the fuzzy analytic hierarchy process (AHP).FindingsFactor analysis extracted six components (primary criteria) including design cues, pocket design, comfort, size and fit, fashionability, and extrinsic cues from the CRs included in the closed-ended questions. MANOVA showed that age and frequency of purchasing denim jeans significantly affected the primary criteria, while educational level and frequency of wearing denim jeans did not. The weights from the fuzzy AHP revealed that colour fastness, price, durability, fabric weight, workmanship, side pocket design and fit as the most important CRs. Moreover, consumers preferred regular fit, stitched round side pockets, patch back pockets and stretchable denim fabric.Research limitations/implicationsThe limitations of the study are discussed in the body of the paper in Section 7.Originality/valueThe paper presents exploratory findings on denim jeans evaluation criteria in a developing country’s context. Moreover, the application of fuzzy AHP for prioritizing denim jeans’ CRs is unique.

Biopolishing of denim by the recombinant xylanase II of Caulobacter crescentus.

Denim, also known as jeans, is a fabric made up of braided cotton threads dyed indigo blue, whose fibers contain approximately 10% of non-cellulosic impurities that reduce its commercial value. Microbial enzymes can act in the cleaning and desizing processes of jeans, improving their color, softness, and covering capacity. The recombinant Xylanase II (XynA2) from the aquatic bacterial Caulobacter crescentus (C. crescentus), previously characterized in terms of its biochemical features, was applied to the biotreatment of jeans to clean and degum it. The biotreatment performance was evaluated in terms of tissue weight loss, amount of reducing sugars released and analysis of the images obtained by scanning electron microscopy (SEM). Biotreated tissues, at 12 and 24 h, showed a dry weight loss of 4.9 and 6.6%, respectively. The reducing sugars amount released after XynA2 action over the jean's fibers showed statistically significant values when compared with each other and with their respective controls. SEM images clearly shown that the fabric treated for 12 h presented a smooth and polished surface, while the fabric treated for 24 h showed the cotton fibers broken, displaying severe damage to the textile. The best treatment for the jeans was in the presence of 1 U mg-1 XynA2 at pH 8 and 60 °C during 12 h. In conclusion, XynA2 of C. crescentus was satisfactorily applied for the biopolishing of denim jeans being a more sustainable alternative to the use of chemical and abrasive processes to obtain the same effects.

A Product Development Model of Denim Jeans for The Indian Market

Product development is an essential process in producing a marketable product. The study proposes a new product development model incorporating customer requirements and market trends for developing a new jeans range. The data on consumer preference of denim jeans was collected by employing a survey. The consumer survey provided insights into fit, colour, washing tone and style preference, wearing patterns, buying behaviour and sustainability requirements. Further, a web scraping algorithm was used to collect data on competitive online products. The features of jeans sold in the online market in India were studied. The data analysis provided the basis for feature selection for the denim jeans samples. These features provided the base for developing a new jeans range for men and women. Potential consumers wore the newly designed jeans, and feedback was collected. The method of competition mapping described in this study is economical and effective for forecasting trends. The proposed product development model has practical applications and is affordable for all brands.

ANESTHESIOLOGY® 2023 in The City that Knows How

Article| March 2023 ANESTHESIOLOGY® 2023 in The City that Knows How Sheela Pai Cole, MD, FASE, FASA Sheela Pai Cole, MD, FASE, FASA Search for other works by this author on: This Site PubMed Google Scholar ASA Monitor March 2023, Vol. 87, 30. https://doi.org/10.1097/01.ASM.0000922024.69543.20 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn MailTo Cite Icon Cite Get Permissions Search Site Citation Sheela Pai Cole; ANESTHESIOLOGY® 2023 in The City that Knows How. ASA Monitor 2023; 87:30 doi: https://doi.org/10.1097/01.ASM.0000922024.69543.20 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll PublicationsASA Monitor Search Advanced Search Topics: gold, leadership, mechanical impact, strikes, employee, travel, vision, automobiles, employee, internship and residency, knowledge acquisition Lifelong learning is vital for anesthesiologists. Staying up to date on the latest scientific developments, clinical trends, and health care innovations is one way we ensure our patients receive the best possible care. It is very fortuitous that this year's ANESTHESIOLOGY® meeting is happening in San Francisco, as it is also known as The City that Knows How. San Francisco (Frisco or San Fran, according to long-term residents) is a lively city bursting with knowledge worth discovering. For example, did you know that San Francisco's cable cars are the only National Historical Landmark that can move? Or that the city has its own fog? (Really, the fog, nicknamed Karl by locals, even has its own Instagram page.) Or that it's the birthplace of the fortune cookie, denim jeans, and martinis? Here's another tidbit about San Francisco: some of ASA's most well-attended meetings have been held in the Golden City.... You do not currently have access to this content.

Jeans and their Fashionable Meanings: Revisiting Beverly Gordon's Cultural Conceptual Framework

Jeans and their Fashionable Meanings: Revisiting Beverly Gordon's Cultural Conceptual Framework

Pyrolysis of Denim Jeans Waste: Pyrolytic Product Modification by the Addition of Sodium Carbonate.

Quickly changing fashion trends generate tremendous amounts of textile waste globally. The inhomogeneity and complicated nature of textile waste make its recycling challenging. Hence, it is urgent to develop a feasible method to extract value from textile waste. Pyrolysis is an effective waste-to-energy option to processing waste feedstocks having an inhomogeneous and complicated nature. Herein, pyrolysis of denim jeans waste (DJW; a textile waste surrogate) was performed in a continuous flow pyrolyser. The effects of adding sodium carbonate (Na2CO3; feedstock/Na2CO3 = 10, weight basis) to the DJW pyrolysis on the yield and composition of pyrolysates were explored. For the DJW pyrolysis, using Na2CO3 as an additive increased the yields of gas and solid phase pyrolysates and decreased the yield of liquid phase pyrolysate. The highest yield of the gas phase pyrolysate was 34.1 wt% at 800 °C in the presence of Na2CO3. The addition of Na2CO3 could increase the contents of combustible gases such as H2 and CO in the gas phase pyrolysate in comparison with the DJW pyrolysis without Na2CO3. The maximum yield of the liquid phase pyrolysate obtained with Na2CO3 was 62.5 wt% at 400 °C. The composition of the liquid phase pyrolysate indicated that the Na2CO3 additive decreased the contents of organic acids, which potentially improve its fuel property by reducing acid value. The results indicated that Na2CO3 can be a potential additive to pyrolysis to enhance energy recovery from DJW.

Impact of Country of Origin on Brand Love: An Empirical Study of Select Denim Jeans Brands

This research paper aims to analyze the impact of attitude towards country of origin on brand love for some select US and Indian denim jeans brands. Further the impact of brand love is also studied on loyalty and word of mouth. Survey based research using convenience sampling was used for data collection using self-administered questionnaires. The study has used confirmatory factor analysis (CFA) using AMOS 20 for data analysis. The empirical analysis shows that the attitude toward the country of origin does not impact the feelings of brand love. However, it was found that brand love impacts loyalty and word of mouth considerably. The findings have been derived from the sample of students from one university. Also, the study has not taken into account high-end fashion brands, thus limiting the generality of the findings to all brands. The findings provide a new dimension called brand love which both the foreign and domestic brands must give due credence to when framing of their branding strategies. By aiming to assess the relationship between the constructs of country of origin and brand love, for which sparsely few studies are found in the existing literature, this paper contributes to the growth of literature in the field of brand love.

PERSONALITY AND PSYCHOLOGICAL PERSPECTIVES ON MEN'S DENIM JEANS: MUSIC AND FASHION PERSPECTIVE EDUCATION IN 4TH IR

When we observe people around us, one of the first things that strikes us is how different people are from one another. Some people are very talkative while others are very quiet. Some are active whereas others are couch potatoes. Some worry a lot; others almost never seem anxious. Each time we use one of these words, words like talkative, quiet, active, or anxious, to describe those around us, we are talking about a person’s personality the characteristic ways that people differ from one another. Personality psychologists try to describe and understand these differences. Recent years have witnessed the ascendance of a new way to conceptualize and investigate the acceptance of men’s denim jeans at different levels of personality and psychological describe ways in which people are different from each other. This follows Maslow concepts and psychological needs. In relation, many Malaysian artists favour jeans wearing during stage shows, drama shooting or film and daily life. For instance, both the artist and the music they sing can play a huge role in which direction the fashion industry moves. Research design is inextricably linked to data analysis. An appropriate design can ensure that the substantive and statistical assumptions for the data analysis such as the assumptions that obtained from the questionnaire distributed to respondents. The hypothesis was tested among 40 male respondents are randomly selected, aged from 23 to 30 years old near Kuala Lumpur from different background such as professional and non-professional. These results provide support for the time horizon hypothesis and suggest further attention to the factors in investigation for future research. The objectives are to understand the cutting styles that fits the person by being able to differentiate various styles available reflecting men’s personality towards jeans styles. By undertaking a quantitative method, the study was able to provide an insight into the personality of self-identity reflection towards men in Kuala Lumpur using Statistical Package for the Social Sciences (SPSS). The study emphasizes on whether men’s personality was reflected by different styles of denim jeans. There are signs that this personality and psychological perspectives emerging as a potentially integrative paradigm for personality and psychology as well. This special issue highlights this new appearance and its relevance to a broad of topics in personality and psychology. Result from analysis proves that slim fit jeans was the type of jeans that had the best choice among respondents, followed by straight cut jeans, skinny jeans, regular jeans and tapered jeans. For section ‘denim jeans as reflection of self- identity, it was found that the highest mean score recorded was the statement ‘I like jeans as a casual wear’.

Correction to: Ecological footprint of your denim jeans: production knowledge and green consumerism

Correction to: Ecological footprint of your denim jeans: production knowledge and green consumerism

Ecological footprint of your denim jeans: production knowledge and green consumerism

Every pair of denim jeans produced contributes 33.4 kg of CO2 into the atmosphere, consumes 3781 L of water, and occupies 12 m2 of land to support its production. The consumption patterns and consumption behaviour of consumers are both vital determinants of their environmental performance and impact. This paper examines the environmental concerns, production knowledge, and related cognitive measures of consumers by mapping their intentions in the process of buying denim jeans. Consumers of denim jeans in mainland China were taken as a sample to achieve our research objective. Specifically, 1392 respondents were quantitatively investigated. The empirical results indicate that production knowledge, the ascription of responsibility, buying attitude, and personal norms are dominant factors in explaining consumers' buying intentions when purchasing denim jeans. Furthermore, we find that the relationship between cognitive factors and buying intentions is mediated by affordability. This study highlights the immediate need to measure the denim industry's ecological footprint (during the production phase) and communicate this to critical industry stakeholders (i.e. macro-level forces, environmentalists, current and potential consumers). The intention is to redefine the purchasing behaviour of future consumers of denim jeans.

Sustainable biodegradable denim waste composites for potential single-use packaging

Every year a massive 2.16 million metric tons of denim jeans is globally wasted and mostly goes into landfill. Though denim is highly rich in cellulose, its valorisation has received little attention. A few attempts have previously shown prospects of denim in composites, though the ultimate products were non-compostable due to the nature of the chosen matrix. This research proposes a novel development of denim/cornstarch composite, maintaining 50/50 fractions, using different denim snippet size. A smoother denim/cornstarch composite morphology and higher tensile strength were observed when smaller denim snippets were used, whereas larger snippets produced voids and roughness and a higher hygroscopicity. Composite prepared from semi-gelatinised cornstarch showed a completely flexible structure similar to non-woven sheet. The chemical structure was observed identical in all of the composites and a good structural compatibility perceived. Individual peaks of both denim (1105 cm−1 and 1705 cm−1) and cornstarch (1081 cm−1) were confirmed in all composite samples, either gelatinised or semi-gelatinised cornstarch used. Overall, this work reveals an eco-friendly approach to utilise consumed denim waste, with insight on possible fine-tuning through alteration of denim snippet size and cornstarch gelatinisation. The mechanical and moisture properties of the composites also suggest their potential application in single-use packaging.

Superiority of Sustainable Ozone Wash Over Conventional Denim Washing Technique

Denim jeans need to be wet-processed in order to create a comfortable feel and a versatile look in the end product. The use of Ozone to finish denim jeans offers environmental and economic benefits by reducing rinse periods, water use, and energy consumption. Ozone is a specialized oxidant with a strong oxidation potential and can decolorize textile effluents, and it has a particular affinity for indigo. This paper will demonstrate why Ozone-based denim wash should be recognized as sustainable in different aspects of denim washing. The study observed that denim fabric finishing with Ozone particles has reduced garments processing time and requires less water and chemicals than the Conventional finishing method. Moreover, because of the low use of chemicals and water, ozone-based finishing produces a minimal amount of wastewater which eventually has less impact on the ETP as well as less effect on the environment than the traditional denim washing method. Also, it gives two times more production than conventional. With an in-depth evaluation of different washing points, this paper has concluded that Ozone-based wash is a promising finishing treatment for denim products.

Identifikasi Golongan Darah O dengan Metode Absorpsi Elusi pada Sampel Darah Kering yang Terdapat pada substrat Kain Jeans dalam Waktu dan Lingkungan Berbeda

This research aims to determine the time limit needed and the environmental conditions that provide the highest success rate in identifying dried blood samples on the fabric of stretch denim, ramie denim, black coated denim, and dry denim jeans using the elution absorption method. Also, to evaluate the effect of the fabric fabric, environmental condition, time, and interactions regarding the success rate of blood group identification. The study was conducted using 3 replications for each type of jeans fabric, which was carried out by exposing blood to a jeans fabric, leaving it in an indoor and outdoor environment for up to 336 hours (14 days), then continued by making a red blood cell suspension for comparison, and examining blood groups using the absorption-elution method. From the results obtained, it is known that the blood exposed in the jeans fabric that being placed indoor for up to 336 hours (14 days) can still be identified and has a success percentage rate of up to 100%. Meanwhile, the blood exposed on the jeans fabric that was placed outdoor could no longer be identified after 264 hours (11 days). Based on the result of this study, it can be concluded that the exposure time of 366 hours (14 days) for the indoor environment can still be identified properly, while the exposure time of 264 hours (11 days) for dry blood samples in the outdoor environment can no longer be identified. The indoor environment gives a better percentage of success than the outdoor environment in identifying blood types from dry blood samples. The best types of substrates that can store blood at an exposure time of up to 336 hours (14 days) are dry denim, black coated denim, and stretch denim.

To be or not to be sustainable in an emerging market? Conjoint analysis of customers' behavior in purchasing denim jeans

PurposeThis paper aims to investigate to what extent sustainable and nonsustainable attributes can be used to characterize different clusters of consumers in an emerging market, where economic conditions can increase the relevance of price. Consumers seem reluctant to engage frequently in pro-sustainable behavior, mainly for financial reasons. However, purchasing decisions can be understood as a multidimensional process.Design/methodology/approachThe authors conducted quantitative and descriptive research employing a choice-based conjoint/hierarchical Bayes (CBC/HB) experiment in malls in a low-income city in northeast Brazil with 1,287 potential buyers of denim jeans. The conjoint analysis therefore collected data on preferences in the course of actual decision-making. The authors then took the individual part-utility from each respondent and ran a cluster analysis to identify similar groups in the sample. The classification and regression tree (CART) method was used to determine the relationship between the conjoint attributes and the sociodemographic characteristics.FindingsThe data demonstrate that buying decisions constitute a complex process of interplay between many different factors, often involving trade-offs between a wide variety of nonsustainable and sustainable attributes. The survey confirmed that price is still of paramount importance when it comes to consumer choices. The authors also found that sustainable attributes played a relatively more significant role than brand or origin of production. The authors identify notable differences between groups of consumers in the “pro-sustainable” and “non-pro-sustainable” clusters and different levels of importance regarding the sociodemographic characteristics.Originality/valueAlthough price emerged as the most significant attribute, the research also demonstrates that there is a market in Brazil for products and practices based on a genuine commitment to the natural environment and social issues. The findings suggest that marketing managers and policymakers should consider different combinations of concerns over sustainability with product attributes and include sociodemographic variables rather than considering the textile market as uniform or thinking that there is no space for sustainability in fashion.

A compact circular polarized metamaterial‐inspired fabric antenna for WBAN applications

AbstractA compact textile antenna with circular polarization (CP) is implemented for Industrial, Scientific, and Medical applications for wireless body area network with radio band 2.4 GHz. A metamaterial‐inspired radiating element is used to achieve a size reduction of up to 85% against the conventional textile antenna. The CP is obtained by trimming the corners of the radiating element. A rectangular slot place with strip line construct a metamaterial‐inspired radiator and U‐slot is imparted below the radiator by using defected ground structure technique to enhance the antenna bandwidth. This antenna has a physical area of 0.25 × 0.22 × 0.016 λg and is implemented on denim jeans substrate of thickness h = 1.6 mm and εr = 1.6. With the presented design, measured bandwidth of 5.8% (2.37–2.51 GHz). The axial ratio bandwidth of 80 MHz (2.40−2.48 GHz), and a peak gain of 2.70 dBi has been acquired. A perfect matching is observed between measured and simulated results. This novel integrated design is suitable for all body area network communication systems where flexibility and compactness are desirable.