In this present study, cold flow properties of biodiesel produced from palm oil were improved by adding cotton seed oil into palm oil. Three different mixtures of palm and cotton oil were prepared as P50C50, P60C40, and P70C30. Among three oil mixtures, P60C40 was selected for biodiesel production via ultrasound assisted transesterification process. Physiochemical characteristics—including density, viscosity, calorific value, acid value, and oxidation stability—were measured and the free fatty acid composition was determined via GCMS. Response surface methodology (RSM) and artificial neural network (ANN) techniques were utilized for the sake of relation development among operating parameters (reaction time, methanol-to-oil ratio, and catalyst concentration) ultimately optimizing yield of palm–cotton oil sourced biodiesel. Maximum yield of P60C40 biodiesel estimated via RSM and ANN was 96.41% and 96.67% respectively, under operating parameters of reaction time (35 min), M:O molar ratio (47.5 v/v %), and catalyst concentration (1 wt %), but the actual biodiesel yield obtained experimentally was observed 96.32%. The quality of the RSM model was examined by analysis of variance (ANOVA). ANN model statistics exhibit contented values of mean square error (MSE) of 0.0001, mean absolute error (MAE) of 2.1374, and mean absolute deviation (MAD) of 2.5088. RSM and ANN models provided a coefficient of determination (R²) of 0.9560 and a correlation coefficient (R) of 0.9777 respectively.

The growing population in urban areas generates large volumes of hospital waste which intensifies the problem of hospital waste management in developing countries. This study is designed to evaluate environmental impacts associated with hospital waste management scenarios using life cycle assessment (LCA) approach. Two scenarios were designed to describe the current practices: (scenario A) and an integrated approach (scenario B), which includes segregation and recycling of hospital waste. Data were collected from five public hospitals located in the district of Sheikhupura, Pakistan. The collected hospital waste was quantified and categorized on a daily basis for five consecutive months (October 2020 to February 2021). The functional unit was defined as one tonne of hospital waste. System boundaries for two scenarios include segregation, transportation, treatment and disposal of hospital waste. After defining functional unit and system boundaries, LCA was conducted using the IGES-GHG simulator. The scenarios were evaluated using common parameter, i.e., greenhouse gas (GHG) emissions. Scenario A and scenario B resulted in net GHG emissions of 1078.40 kg CO₂-eq. per tonne of waste and 989.31 kg CO₂-eq. per tonne of waste, respectively. Applying an integrated approach, it would be possible to mitigate GHG emissions of 37,756.44 kg CO₂-eq. per tonne of waste annually and to recover some materials such as glass, paper, plastic and metals. Therefore, implementing an integrated approach for the management of hospital waste will progress the entire system towards sustainability. The findings of this study can be used for future research and policymaking.

Background and aim: A Society's view of disability may influence the perception and use of Assistive Technology (AT) products. Semantic cues or cultural coding provide the viewer with a series of visual stimuli to be given or ascribed meaning. Previous research has shown cognitive approaches to visual perception and assignment of meaning vary between diverse cultures. This study reviews the influence of contextual settings on perception, to provide the basis for a debate on the societal perception of communicative content (semantic/meaning) of an AT product; and, the relevance of different cultural cognitive styles. The paper explores, from a cultural viewpoint, the overall understanding of disability internationally. Method: A Semantic Differential (SD) scale was used to obtain views on the image of an attendant wheelchair from nine hundred and ninety-one (991) young adults from the United Kingdom (UK) and Pakistan (PAK), reflecting the individualist and collectivist societies, respectively. This survey follows a previous paper-based study using the same image and protocol. Comparing the two surveys, a consensus of views from the two groups was achieved. Results and conclusion: The responses from the UK group were skewed towards a negative view of disability compared to the Pakistan group. This inferred greater social stigma associated with this AT product in the UK. The combined findings from both surveys provide insights into societal perception of AT products and disability. Areas for future research are suggested, including what visual components of an AT product (graphemes) appear to be associated with positive or negative responses for collectivist and individual societal groups.

The emergence of technology-driven tourism is transforming Pakistan's economic landscape, prompting a detailed examination to improve tourist experiences and streamline tour planning. This study introduces a customized application framework and User Interface (UI) design to assist tourists in effortlessly locating accommodations, dining options, attractions, and leisure spots while exploring Pakistan's diverse demographic appeal. Through a structured questionnaire merging Information Technology (IT) and Pakistan's tourism industry, primary data is meticulously analyzed, revealing the pivotal role of digitization and innovation in enhancing ongoing tourism events. Descriptive and correlational analyses highlight the widespread preference among tourists for using mobile applications and social media platforms for vacation planning, with a notable 62.4% of male respondents among 398 participants. Using insights utilizing from the survey, interactive maps provide comprehensive information on tourist locales, historical contexts, imagery, and transit routes, thereby enriching navigation experiences. This research's significance lies in its potential to revolutionize Pakistan's tourism sector through digitization and interactive navigation, enabling the country to leverage its rich cultural heritage and diverse attractions to attract a broader range of visitors. Through the development of user-friendly applications and initiatives, Pakistan can enhance its economic outlook and promote sustainable tourism practices, ensuring long-term viability and inclusivity within the industry.

Assistive Technology (AT) product use occurs within a socio-cultural setting. The growth internationally in the AT product market suggests that designers need to be aware of the influences that diverse cultures may have on the societal perception of an AT product through its semantic attributes. The study aimed to evaluate the visual interaction with an AT product by young adults from Pakistan, a collectivist society, and the United Kingdom (UK), an individualist society. A paper-based questionnaire survey was carried out with 281 first-year undergraduate students from the UK and Pakistan to evaluate their perception towards the visual representation of a generic conventional wheelchair image. A semantics differential (SD) scale method was used involving a seven-point bipolar SD scale incorporating sixteen pairs of adjectives defining functional, meaning, and usability attributes of the product. The mean (M) and standard deviation (sd) values were obtained for each pair of adjectives and compared between both groups by employing appropriate parametric tests. The results show that having a diverse cultural background did not appear to have overtly influenced the meanings ascribed to the generic manual wheelchair, which was unexpected. The University ‘Internationalist’ environment may have influenced the results. Some minor but critical differences were found for some pairs of adjectives (bulky-compact, heavy-light), having p-value less than .05 (p < .05) that related to previous experience of wheelchairs and/or their use. Further studies are planned to investigate and validate outcomes with other student and non-student groups.

An estimated 518 students were taught the Loughborough User Centred Assistive Technology design process, LUCAT, since 2000. Graduates were contacted via a professional networking website to take part in a survey with four being interviewed. The purpose of the survey was to find out if: 1) Did they still use any parts of the process; and 2) Where they had applied them. The respondents ranged from returning placement undergraduates to senior managers in research and development within major companies. From the 105 respondents 23% stated they used parts of the LUCAT process every working day, a further 25% once a week and 27% once a month. The elements of the process used were predominantly semi-structured interviews, concept generation, codesign, design presentation and feedback. Respondents highlighted the benefits of using this process including gaining insights from users, being time efficient, saving money, developing a relationship with end users and making a difference to the lives of people with disability. It was suggested some industries had still not incorporated a User Centred Design approach within New Product Development. The use of the process was shown to be useful beyond AT product design into most areas of design activity.