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In the present work, the effect of water on some physical properties of false-twist textured polyamide 6 yarn was studied. A laboratory false-twist texturing machine was modified by a water bath in order to wet the feed yarn before entering the texturing zone. Polyamide 6 yarn was textured at the texturing speeds of 51, 85 and 119 m/min and twist levels of 2165, 2559 and 2954 turns per meter, with and without water bath. The properties of textured yarn in the aspects of crimp characteristic and tensile behavior were determined. The properties of wet textured yarn were also compared with normal (dry) textured yarn. The results show that the tensile and crimp property values of wet textured yarn are lower than those of normal (dry) textured yarn. Wetting of feed yarn changes the stability of twisting–untwisting process in false-twist texturing, and it seems that some fraction of twist is maintained in the final textured yarn. This residual twist results in non-bulky appearance of wet textured yarn.

This paper aims to extracted sericin from the cocoons of Bombyx mori silkworms, and sericin powder was applied onto drawn textured polyethylene terephthalate (PET) yarns as a spin finish. The reactivity on the surface of PET yarns was analyzed through Fourier transform infrared spectrophotometry–attenuated total reflectance (FTIR-ATR) and dyeing with methylene blue as a reactive dye. Also, investigations were conducted on the effects of sericin, citrc acid (CA) (as a crosslinking agent), and sodium hypophosphite (as a catalyst) concentrations on some properties of false-twist textured PET yarns.

A false-twist texturing machine (Scragg-Shirley minibulk, England) was used with the draw ratio of 1.05, heating temperature of 120°C, texturing speed of 100 m min⁻¹ and applied twist of 3,000 TPM. The aqueous extraction of sericin was carried out by the boiling of the raw silk in distilled water with L:R: 40:1 for 120 min. The aqueous solution was filtered with a filter paper to remove the impurities and insoluble fibroin. Finally, the sericin solution was freeze-dried to obtain the sericin powder. The sericin solution was applied on the drawn textured PET yarns using the “pad-dry-cure” method.

Sericin fixation onto the PET yarns was confirmed by FTIR-ATR. The results showed that there were no significant changes in the tensile strength, linear density, crimp contraction and crimp modulus, elongation at break and shrinkage. In contrast, a substantial increase was observed in moisture regain, vertical wicking, dye uptake and ultraviolet protection. There was also a reduction just in the electrical resistivity, in the presence of sericin.

Although sericin has been known to have numerous beneficial properties, its application in textile industry as a spin finish has not been reported yet.

A key feature of performance in many professions is that of vigilance, carefully monitoring one’s environment for potential threats. However, some of the characteristics that may make someone successful in such work may also be more likely to make them fail in the long-term as a result of burnout, fatigue, and other symptoms commonly associated with chronic stress. Among these characteristics, neuroticism is particularly relevant. To exert the effort that vigilance work requires, sensitivity to threats, a core aspect of neuroticism, may be necessary. This is evidenced by higher rates of neuroticism in vigilance-related professions such as information technology (IT). However, other aspects of neuroticism could attenuate performance by making individuals more distractible and prone to burnout, withdrawal, and emotional outbursts. Four perspectives provide insight to this neuroticism–vigilance paradox: facet-level analysis, trait activation, necessary conditions, and job characteristics. Across these perspectives, it is expected that too little neuroticism will render employees unable to perform vigilance tasks effectively due to lack of care while too much neuroticism will cause employees to become overwhelmed by work pressures. Contextual and personological moderators of the neuroticism–vigilance relationship are discussed, as well as two behavioral styles expected to manifest from neuroticism that could explain how neuroticism may be associated with either good or bad performance-relevant outcomes.

This study aims to propose another alternative numerical modelling tool, i.e. ABAQUS, to simulate a fully coupled seepage-deformation analysis in unsaturated slope subjected to rainfall infiltration.

The effect of rainfall infiltration on the response of pore water pressure and factor of safety has been analysed and discussed. The results of this study have also been validated based on the results of field monitoring and previous numerical modelling.

The results from ABAQUS show a better agreement with those from field monitoring compared to other numerical modelling tools.

The procedures adopted in this study can be adopted and used as a guide to model similar slope problems in ABAQUS.

The purpose of this paper is to introduce and discuss 11 strategies and 11 sets of tools to provide a knowledge background on how native people of Iran have come up with innovative solutions to create a sustainable and comfortable living environment within the confinement of their homes, in harsh environment of Iran’s hot-arid and hot-humid regions.

These strategies include density, building orientation, introversion, design for four seasons, using local materials, using the ground’s thermal capacity, natural wind induced ventilation, using walls’ thickness and porosity, Panãm (insulation), using special native additive elements and integration of water and plants into the building. Discussed tools include water, courtyard, Showãdãn, Bahãr-khãb, roof, korsi room, ratio and Pãyãb, Sardãb and Howz-khãneh, Shanãshil, Bãdgir and Eivãn.

In conclusion, interrelations between these strategies and tools are illustrated in order to provide a collection of guidelines and inspirations for those involved in the building industry in Iran and Middle East to come up with innovative solutions for creating a sustainable and comfortable living environment in this region’s climates.

This paper provides a collection of guidelines and inspirations for those involved in the building industry in Iran and Middle East to come up with innovative solutions for creating a sustainable and comfortable living environment in this region’s climates.

Simultaneous hydrofracturing of multiple perforation clusters in vertical wells has been applied in the stimulation of hydrocarbon resources reservoirs. This technology is significantly impeded due to the challenges in its application to the multilayered reservoirs that comprise multiple interlayers. One of the challenges is the accurate understanding and characterization of propagation and deflection of the multiple hydraulic fractures between reservoirs and embedded interlayers.

Numerical models of the tight multilayered reservoirs containing multiple interlayers were established to study hydrofracturing of multiple perforation clusters and its influencing factors on unstable propagation and deflection of hydraulic fractures. Brittle and plastic multilayered reservoirs fully considering the influences of different in situ stress ratio and physical attributes for reservoir and interlayer strata on propagations of hydraulic fractures were investigated. The combined finite element–discrete element method and mesh refinement strategy were adopted to guarantee the accuracy of stress solutions and reliability of fracture path in computation.

Results show that the shear stress fields between adjacent multiple hydraulic fractures are superposed to cause fractures deflection. Stress shadows induce the shielding effects of hydraulic fractures and inhibit fractures growth to emerge unstable propagation behaviors, and a main single fracture and several minor fractures develop. As the in situ stress ratio increases, hydraulic fractures more easily deflect toward the direction of maximum in situ stress, and stress shadow and mutual interaction effects between them are intensified. Compared to brittle reservoir, plastic-enhanced reservoir may limit fracture growth and cannot form long fracture length; nevertheless, plastic properties of reservoir are prone to induce more microseismic events with larger magnitude.

The obtained fracturing behaviors and mechanisms based on engineering-scale multilayered reservoir may provide effective schemes for controlling and estimating the unstable propagation of multiple hydraulic fractures.

Considering the direct impact of retailers' performance on the economy, this paper aimed to propose a comprehensive framework to evaluate the performance of different branches of a retailer.

Through a case study, the weights of indicators were calculated by the best-worst method (BWM) and the branches' performance was appraised using data envelopment analysis (DEA).

The branches were ranked in terms of performance, and sensitivity analysis and statistical tests were conducted to realize the weaknesses and strengths of the branches. Then, some strategies were proposed using strengths, weaknesses, opportunities and threats (SWOT) analysis to improve the performance of the weak branches.

This paper contributes to previous studies on the evaluation of retailers' performance by proposing a triple framework based on resilience, sustainability and sales-marketing indicators. This paper focused on branches' operations and branches' optimization by improving performance in terms of these three indicators. This paper also offers a qualitative and quantitative analysis of retailers' performance, which has received less attention in previous studies.

This study aims to investigate the influence of the interrelationship between the deployment of Industry 4.0 (I4.0) technologies and the application of lean production (LP) practices on the degree of organizational sustainability performance (SP) enhancement of the Bangladeshi ready-made garment (RMG) sector.

Previously, researchers have applied the resource-based view (RBV) or dynamic capability view (DCV) to describe the interaction of resources and capacities (technologies, management practices, SP) to analyze their effectiveness. However, in light of several contemporary academic discussions, this study contends that these organizational views are inappropriate for explicating SP. Hence, as the foundation of this study’s theoretical framework, the authors used the practice-based view (PBV), which is recommended as a useful window to evaluate the function of practices that are common and simple to emulate in execution. To test the theoretical framework and research hypothesis, this study used partial least square (PLS) analysis. For that, the authors carried out a systematic survey to collect data from 80 Bangladeshi RMG factories.

The results of this research imply that LP is a crucial factor in enhancing organizational SP. Moreover, the results also indicate that the adoption of I4.0 technologies along with LP can assist in delivering the lean objectives more efficiently and, therefore, the combined application of LP practices and I4.0 technologies play a significant role in enhancing organizational SP.

Though the present literature indicates the probable significant association between LP and SP or I4.0 technologies and SP, no study, with the best of the authors’ knowledge, has empirically examined the combined impacts of correlation between LP and I4.0 on SP. This is also a unique study to apply the PBV theory to explain the organizational SP through the combination of common resources and technologies.

The imperative to conserve resources and minimize operational expenses has spurred a notable increase in the adoption of lean manufacturing within the context of the circular economy across diverse industries in recent years. However, a notable gap exists in the research landscape, particularly concerning the implementation of lean practices within the pharmaceutical industry to enhance circular economy performance. Addressing this void, this study endeavors to identify and prioritize the pivotal drivers influencing lean manufacturing within the pharmaceutical sector.

The outcome of this rigorous examination highlights that “Continuous Monitoring Process for Sustainable Lean Implementation,” “Management Involvement for Sustainable Implementation” and “Training and Education” emerge as the most consequential drivers. These factors are deemed crucial for augmenting circular economy performance, underscoring the significance of management engagement, training initiatives and a continuous monitoring process in fostering a closed-loop practice within the pharmaceutical industry.

The findings contribute valuable insights for decision-makers aiming to adopt lean practices within a circular economy framework. Specifically, by streamlining the process of developing a robust action plan tailored to the unique needs of the pharmaceutical sector, our study provides actionable guidance for enhancing overall sustainability in the manufacturing processes.

This study represents one of the initial efforts to systematically identify and assess the drivers to LM implementation within the pharmaceutical industry, contributing to the emerging body of knowledge in this area.