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This paper aims to investigate the wear behaviors of aged metal matrix composites and of the as-cast Al-Si alloy by using a pin-on-disk wear testing machine at room temperature.

Hypoeutectic (Al-7Si) alloy reinforced with low volume fractions of SiC particles (SiC_p) and graphite (Gr) particles were prepared by the stir-casting process. It was found that the addition of 9 Wt.% of SiC_p and 3 Wt.% of Gr particles conferred a beneficial effect in reducing the wear rate of the composites.

The worn-out surfaces of the specimens were examined using scanning electron microscopy (SEM); the extensive micro cracking occurs on the surface of the Al-7Si alloy tested at lower loads. The growth of these microcracks finally led to the delamination of the base alloy surface. The reinforcements (SiCp and Gr) particles tended to reduce the extent of plastic deformation in the surface layer, thereby reducing extensively the occurrence of micro cracking in the composites.

From the results, it is revealed that the quantity of wear rate was less for aged specimens compared to the as-cast specimens. The worn-out surfaces were studied using electron dispersive spectroscopy, and wear debris was analyzed using SEM.

This paper aims to investigate the microstructure, hardness and tribological properties of hypoeutectic (Al-7Si) matrix reinforced with fixed quantities of 3 Wt.% graphite (Gr) and x Wt.% SiCp (x = 3, 6 and 9) hybrid composites.

The composites were fabricated by stir cast technique. The microstructure, hardness and tribological measurements were carried out on the base alloy and composites. The tribological investigation was carried out on pin-on-disc wear testing machine under dry sliding condition.

The wear rate decreases with the increase of SiCp into A356-3Gr composites. The composite containing A356-9SiCp-3Gr had better hardness and good wear resistance compared to the base alloy. Scanning electron microscope (SEM) and electro dispersive spectrometry (EDS) images were used to study the reinforcement distribution and worn-out surface of the specimens.

The present paper brings out a clear picture of the various events that take place under the worn-out surfaces leading to the generation of mechanical mixed layer.

The purpose of the paper is to study the dry sliding wear behavior of as-cast and heat-treated zinc-aluminum (ZA-27) alloy, reinforced with silicon carbide and graphite particles.

The alloy and composite samples were prepared with stir casting technique. Heat treatment was carried out for samples at a temperature of 370°C followed by quenching in water at room temperature. Subsequently, the heat-treated samples were aged at 180°C and quenched in water at room temperature. The wear tests were carried using pin-on-disc apparatus at room temperature at different applied loads, sliding speed and sliding distance.

The wear volume loss of as-cast samples was more compared with heat treated samples. Composites exhibited improved wear resistance than base alloy.

Hybrid metal matrix composites with heat treatment has exhibited superior wear behavior in dry sliding conditions.

The routine use of intrapartum electronic fetal monitoring (EFM) has resulted in an increased burden of operative and vaginal instrumental deliveries for women at low obstetric risk. Such modes of delivery increase maternal mortality and morbidity risks. This study aims to explore midwives' values, attitudes and beliefs when using intrapartum fetal monitoring techniques in clinical practice.

A total of 58 registered midwives across two NHS Trusts in one region in the north of England were interviewed using a qualitative approach.

Midwives attempted to manage the psychological burden of the threat from clinical negligence by using EFM. This meant that some midwives used electronic monitoring regardless of clinical need. Midwives lack confidence in the ability of EFM to accurately detect fetal compromise but are aware that the visual monitoring record is recognised as a valuable piece of legal evidence. The midwives' perceptions of professional self‐efficacy in seeking to avoid a claim in clinical negligence contributed to defensive practice. Research limitations/implications – The study was conducted in only two hospitals in one region of England; however the Trust demographics were similar and midwifery practice within the unit reflects national maternity standards of care.

Multidisciplinary strategies may be required to overcome barriers to the effective implementation of clinical guidelines where intrapartum fetal monitoring is concerned and Trust audit departments must undertake regular audit cycles in order to ascertain practice compliance with best evidence.

The paper provides information so that midwives' knowledge regarding the limitations of EFM can be improved.

The purpose of this study is to examine the impact of the marketing mix, customer perceptions, and religion on the buying decision of Islamic banking products in an emerging market namely the United Arab Emirates (UAE).

This study adopts a quantitative approach to analyze the data of 435 respondents collected through an online survey during January–February 2022. Data analysis of direct and moderating relationships are done through Smart PLS (partial least squares) using structural equation modelling (SEM) technique.

The results indicate that marketing mix (product, price, place and promotion) and customer perceptions have a positive direct relation with the buying decision of Islamic banking products in the UAE. However, moderation analysis shows that religion is a non-significant moderator for the above relationships.

This study combines potential variables from the perspectives of marketing, human mindset, and individual beliefs. The findings of this study provide a wider understanding of consumer behavior toward Islamic banking products. Marketers of the Islamic banking industry can utilize these findings for effective market segmentation and well-crafted marketing strategies. This will ultimately contribute to the sustainable growth and development of the Islamic banking industry in the UAE and other regions.

The aim of this paper is to determine the thermal conductivity of a protective layer of alkali-activated cement and the possibility of performing fire protection with fireclay sand and Lightweight mortar. Unprotected steel structures have generally low fire resistance and require surface protection. The design of passive protection of a steel element must consider the service life of the structure and the possible need to replace the fire protection layer. Currently, conventional passive protection options include intumescent coatings, which are subject to frequent inspection and renewal, gypsum and cement-based fire coatings and gypsum and cement board fire protection.

Alkali-activated cements provide an alternative to traditional Portland clinker-based materials for specific areas. This paper presents the properties of hybrid cement, its manufacturability for conventional mortars and the development of passive fire protection. Fire experiments were conducted with mortar with alkali-activated and fireclay sand and lightweight mortar with alkali-activated cement and expanded perlite. Fire experiment FE modelling.

The temperatures of the protected steel and the formation of cracks in the protective layer were investigated. Based on the experiments, the thermal conductivities of the two protective layers were determined. Conclusions are presented on the applicability of alkaline-activated cement mortars and the possibilities of applicability for the protection of steel structures. The functionality of the passive fire layer was confirmed and the strengths of the mortar used were determined. The use of alkali-activated cements was shown to be a suitable option for sustainable passive fire protection of steel structures.

Eco-friendly fire protection based on hybrid alkali-activated cement of steel members.

Identifying the health-related needs in transgender (TG) people can help to formulate strategies for providing appropriate and accessible health services and promoting health and social justice, as well as human rights in these populations. This systematic review aims to determine health-related needs, problems and barriers, as well as ways to solve them in TG people from the viewpoint of TG individuals and health policymakers.

All international electronic databases such as PubMed (Medline), Embase, CINAHL, Scopus, Web of Sciences, Cochrane, PsycInfo and Google Scholar (Gray Literature) were searched from December 1990 to December 2019. After the search, the articles were screened based on their title, abstract and full text. The quality of articles was assessed using the Strengthening the reporting of observational studies in epidemiology (STROBE), Consolidated Standards of Reporting Trials (CONSORT) and Standards for Reporting Qualitative Research (SRQR) checklists. The search strategy, data extraction and quality evaluation of articles were independently performed by two researchers.

The general health-related needs identified in TG individuals from the viewpoint of themselves included access to legal hormone therapy, psychological and psychiatric counseling, privacy, health and hygiene needs, equality and freedom of expression. General health-related needs in TG individuals from the viewpoint of health policymakers included screening tests to detect sexually transmitted diseases, especially HIV, cancers and other diseases, as well as training service providers (physicians, nurses, health workers, etc.).

One of the limitations of this study was nonreporting of health-related needs in initial articles by different TG groups because these groups have had different needs and different barriers to accessing health-care services. In this study, health-related needs and barriers to satisfy them were categorized from the viewpoint of TG populations and health policymakers around the world, which may influence future decisions to provide services to TG populations. The results of this systematic review can help to develop different strategies by considering all TGs from individual, family and social aspects to better provide services for this group. However, given the dynamics and changes in the existing communities and the limited studies on gender minorities in developing countries, further research is required to comprehensively address the subject.

The findings can be used as an incentive to improve existing conditions and to address problems and shortcomings. The results of this systematic review formulate strategies for providing appropriate and accessible health services and better lives for TGs, planning for more effective participation of these individuals in local communities, improving their physical problems and mental health through counseling, as well as promoting health and social justice, and human rights for these populations.

The purpose of this paper is to improve the dye affinity of natural dye of Terminalia chebula retzius (T. chebula) using the dye substrate of leather.

The dyeing conditions such as temperature, concentration of dye, and time are controlled by measuring the dye affinity. The effect of enzymatic post-tanning process on dye affinity is evaluated by using different type of proteases such as flavourzyme, alcalase, and bromelain. The optimum conditions for enzymatic post-tanning process are evaluated depending on different pH, temperature, and concentration of enzyme.

The highest dye affinity was obtained at 50°C using a dye concentration of 200 percent (owf) for 30 min treatment by measuring of K/S values of dyed leather. Distilled water was proved as a better extraction liquid to improve the dye affinity of T. chebula. The K/S values of dyed leather were enhanced after the enzymatic post-tanning process by flavourzyme. Moreover, the fastness properties against the rubbing and dry cleaning of the dyed leather were improved by the enzymatic post-tanning process.

In this paper, the enzymatic post-tanning process is introduced as the method to improve the dye affinity in natural dyeing using Terminalia chebula retzius (T. chebula) applied to leather. The results of the study could be applied for further natural dyeing of leather using various natural dyes.

The purpose of this paper is to explore a new eco-friendly green textile dyeing. Natural plant Buddleja officinalis is traditionally used as yellow pigment addition in rice. It is worth developing its application and dyeing performance in cotton fabric.

Buddleja officinalis dried flower was extracted with ethanol aqueous. The extraction conditions including ethanol concentration, material to liquor ratio, extract time and temperature were optimized. Then cotton fabrics were dyed with Buddleja officinalis extraction under conventional and ultrasonic conditions. The effects of dyeing time, bath ratio, pH value of dyeing bath, dyeing temperature and mordants on K/S values were studied and the resulting color strength obtained by conventional and ultrasonic dyeing were compared. The ultraviolet (UV) transmittance of Buddleja officinalis dyed cotton fabric was also evaluated.

The color strength of the fabric dyed with Buddleja officinalis under ultrasonic conditions was higher than that under conventional conditions. Alum, Fe and Cu as simultaneous mordants improved the K/S value of the dyed cotton fabrics. Both washing fastness and rubbing fastness were fairly good in all Buddleja officinalis dyed cotton fabrics, washing fastness = 3–4 and rubbing fastness = 4. What’s more, the dyed cotton fabrics showed lower transmittance values as compared to undyed cotton fabrics and indicated potential UV protection capability.

Buddleja officinalis can be a new natural dye source for the ultrasonic dyeing of cotton fabric.

It is for the first time that Buddleja officinalis is used as a natural dye in cotton fabric dyeing with less water and the dyeing using ultrasound has been found to have an obvious improvement in the color strength and color-fastness.

The purpose of this paper is to describe the use of information technology (IT) in the fight against forest fires in southern France.

The focus is on specifying the infrastructure and equipment used during operational interventions, as well as the role and functioning of the mobile command posts, which represent the nerve centers. As part of the firefighters operational practices, the concepts of the “tactical situation” and the “mobile means board” are at the heart of operations management. The purpose of the tactical situations is to present a synthetic overview of the theatre of operations through graphic representation on a background map. The function of the mobile means board is to manage the life cycle of the different resources engaged in the operations. The author first shows how these concepts were developed within the framework of manual management only. This is followed by an IT solution using a geographical information system for each of these operational modes.

A profound recognition of operational practices was a prerequisite to enable the personnel to accept a progression towards the use of IT techniques.

The implemented approach precisely reflects the French forest firefighting doctrine. Application to other countries would thus require some adaptation.

The software system provides an easy access to geographical information functionalities for firefighters managing forest fires. This is achieved in the framework of strict compliance with their recognized operational methods.