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Open Access
Article
Publication date: 25 July 2023

Mohammed A. Alsanad

The present study focused on examining the effect of treated wastewater (TWW) on soil chemical properties. Also, efforts were made to compare the soil chemical properties under…

Abstract

Purpose

The present study focused on examining the effect of treated wastewater (TWW) on soil chemical properties. Also, efforts were made to compare the soil chemical properties under TWW irrigation with that under groundwater (GW).

Design/methodology/approach

During the years 2021 and 2022, surface and subsurface soil samples were randomly collected in triplicate by using an auger fortnightly at two depths (20 and 40 cm) from the selected spot areas to represent the different types of irrigation water sources: TWW and GW. Samples of the GW and the TWW were collected for analysis.

Findings

This study examines the impact of TWW on soil characteristics and the surrounding environment. TWW use enhances soil organic matter, nutrient availability and salt redistribution, while reducing calcium carbonate accumulation in the topsoil. However, it negatively affects soil pH, electrical conductivity and sodium adsorption ratio, although remaining within acceptable limits. Generally, irrigating with TWW improves most soil chemical properties compared to GW.

Originality/value

In general, almost all of the soil’s chemical properties were improved by irrigating with TWW rather than GW. Following that, wastewater is used to irrigate the soil. Additionally, the application of gypsum to control the K/Na and Ca/Na ratios should be considered under long-term TWW and GW usage in this study area in order to control the salt accumulation as well as prevent soil conversion to saline-sodic soil in the future. However, more research is needed to thoroughly investigate the long-term effects of using TWW on soil properties as well as heavy metal accumulation in soil.

Details

Arab Gulf Journal of Scientific Research, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1985-9899

Keywords

Open Access
Article
Publication date: 28 January 2020

Haotian Cao, Zhenghao Zhang, Xiaolin Song, Hong Wang, Mingjun Li, Song Zhao and Jianqiang Wang

The purpose of this paper is to investigate the influence of driver demographic characteristics on the driving safety involving cell phone usages.

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Abstract

Purpose

The purpose of this paper is to investigate the influence of driver demographic characteristics on the driving safety involving cell phone usages.

Design/methodology/approach

A total of 1,432 crashes and 19,714 baselines were collected for the Strategic Highway Research Program 2 naturalistic driving research. The authors used a case-control approach to estimate the prevalence and the population attributable risk percentage. The mixed logistic regression model is used to evaluate the correlation between different driver demographic characteristics (age, driving experience or their combination) and the crash risk regarding cell phone engagements, as well as the correlation among the likelihood of the cell phone engagement during the driving, multiple driver demographic characteristics (gender, age and driving experience) and environment conditions.

Findings

Senior drivers face an extremely high crash risk when distracted by cell phone during driving, but they are not involved in crashes at a large scale. On the contrary, cell phone usages account for a far larger percentage of total crashes for young drivers. Similarly, experienced drivers and experienced-middle-aged drivers seem less likely to be impacted by the cell phone while driving, and cell phone engagements are attributed to a lower percentage of total crashes for them. Furthermore, experienced, senior or male drivers are less likely to engage in cell phone-related secondary tasks while driving.

Originality/value

The results provide support to guide countermeasures and vehicle design.

Details

Journal of Intelligent and Connected Vehicles, vol. 3 no. 1
Type: Research Article
ISSN: 2399-9802

Keywords

Open Access
Article
Publication date: 7 December 2023

Yuxia Yan, Na Wang and Yun Cao

Coastal zone ecological restoration project is of great significance to alleviate marine ecological degradation. Evaluating the effect of coastal ecological restoration projects…

Abstract

Purpose

Coastal zone ecological restoration project is of great significance to alleviate marine ecological degradation. Evaluating the effect of coastal ecological restoration projects and identifying the obstacle factors affecting their restoration level can provide an empirical basis for future Marine ecological restoration projects.

Design/methodology/approach

However, due to the initial stage of coastal zone ecological restoration projects, the actual monitoring data of coastal zone ecological restoration is relatively lacking. Based on the CRITIC-TOPSIS (combination of CRITIC method and TOPSIS method) method, combined with the subjective perception of the public and the actual data of the restoration project, this paper proposes an evaluation method of the coastal zone ecological restoration effect to obtain the specific implementation effect of the coastal zone ecological restoration project. The main obstacle factors affecting the evaluation of coastal ecological restoration effect are identified by using the obstacle degree model.

Findings

This paper conducted an empirical study on the restoration of sandy shoreline and coastal wetland in Qinhuangdao city. Based on the data of restoration projects and the subjective perception of ecological restoration by the public in Qinhuangdao city, the research results showed that the coastal zone ecological restoration effect of Qinhuangdao city was general. The quality of the restoration project and the public perception have an important influence on the evaluation of the restoration effect. Improving the quality of the restoration project, strengthening the public's participation in ecological restoration and allowing the public to better participate in the ecological restoration of the coastal zone can improve the effect of ecological restoration of the coastal zone in an all-round way.

Originality/value

The research results of this paper have a guiding role in the ecological restoration of coastal cities in the future, and also have a demonstration and reference role for the assessment of the effect of ecological restoration of coastal zones.

Open Access
Article
Publication date: 31 January 2024

Joonho Na, Qia Wang and Chaehwan Lim

The purpose of this study is to analyze the environmental efficiency level and trend of the transportation sector in the upper–mid–downstream of the Yangtze River Economic Belt…

Abstract

Purpose

The purpose of this study is to analyze the environmental efficiency level and trend of the transportation sector in the upper–mid–downstream of the Yangtze River Economic Belt and the JingJinJi region in China and assess the effectiveness of policies for protecting the low-carbon environment.

Design/methodology/approach

This study uses the meta-frontier slack-based measure (SBM) approach to evaluate environmental efficiency, which targets and classifies specific regions into regional groups. First, this study employs the SBM with the undesirable outputs to construct the environmental efficiency measurement models of the four regions under the meta-frontier and group frontiers, respectively. Then, this study uses the technology gap ratio to evaluate the gap between the group frontier and the meta-frontier.

Findings

The analysis reveals several key findings: (1) the JingJinJi region and the downstream of the YEB had achieved the overall optimal production technology in transportation than the other two regions; (2) significant technology gaps in environmental efficiency were observed among these four regions in China; and (3) the downstream region of the YEB exhibited the lowest levels of energy consumption and excessive CO2 emissions.

Originality/value

To evaluate the differences in environmental efficiency resulting from regions and technological gaps in transportation, this study employs the meta-frontier model, which overcomes the limitation of traditional environmental efficiency methods. Furthermore, in the practical, the study provides the advantage of observing the disparities in transportation efficiency performed by the Yangtze River Economic Belt and the Beijing–Tianjin–Hebei regions.

Details

Journal of International Logistics and Trade, vol. 22 no. 1
Type: Research Article
ISSN: 1738-2122

Keywords

Content available
Book part
Publication date: 30 July 2018

Abstract

Details

Marketing Management in Turkey
Type: Book
ISBN: 978-1-78714-558-0

Open Access
Book part
Publication date: 29 September 2023

Mariya Levitanus

Recent years have seen the development of new approaches to the study of gender and sexuality in childhood, with attention given to socio-historical, cultural and political…

Abstract

Recent years have seen the development of new approaches to the study of gender and sexuality in childhood, with attention given to socio-historical, cultural and political contexts. This chapter aims to contribute towards a limited field of research on queer childhood and youth in Central Asia by considering how narratives of queer childhood in Kazakhstan are culturally produced. This chapter draws on the material from in-depth interviews of 11 queer people living in Kazakhstan, focussing on their narratives of childhood. The study exposes the effect of silence about non-heteronormative identities in Kazakhstan on queer children. Narratives of bullying and managing school violence are explored along with narratives of queer childhood within the families of origin. Lastly, the chapter foregrounds instances of agency and resilience, considering how queer children manage to steer themselves away from being an ‘impossible subject’ and contest dominant societal attitudes and discourses.

Details

The Emerald Handbook of Childhood and Youth in Asian Societies
Type: Book
ISBN: 978-1-80382-284-6

Keywords

Open Access
Book part
Publication date: 29 November 2023

Abstract

Details

The Emerald Handbook of Research Management and Administration Around the World
Type: Book
ISBN: 978-1-80382-701-8

Open Access
Article
Publication date: 26 October 2021

Hung Duy Nguyen, Quang Nhat Huu Do and Laura Macchion

Risks are considered a significant obstacle to Green Building (GB) development and have recently received significant attention from both construction practitioners and academics…

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Abstract

Purpose

Risks are considered a significant obstacle to Green Building (GB) development and have recently received significant attention from both construction practitioners and academics. This study aimed to identify critical GB risks and explore the relationship between participants' characteristics and risk assessment.

Design/methodology/approach

Firstly, a list of GB risks was developed based on a comprehensive literature review and interviewing GB experts. After that, a survey of 207 construction professionals was then conducted to validate these GB risk factors. Finally, this research adopted the ANOVA test and hierarchical regression analysis to examine the relationship between participants' characteristics and risk assessment.

Findings

The results provided a list of GB risks classified and evaluated according to the GB project life cycle and, thus, may serve as a helpful reference for GB practitioners. Notably, the ANOVA analysis revealed that risk assessment negatively correlates with participants' GB experience, while their industry experience does not affect risk assessment. Furthermore, the hierarchical regression analysis proved that participant roles do not moderate the association between risk assessment and GB experience.

Originality/value

This study contributed to GB literature by implementing empirical research on GB risks in a developing country. The results implied the essential role of professionals with rich GB experience in risk management in GB projects. Furthermore, this research could help construction practitioners understand GB risks adequately and thereby have better risk-management strategies for future GB projects.

Details

Engineering, Construction and Architectural Management, vol. 30 no. 2
Type: Research Article
ISSN: 0969-9988

Keywords

Open Access
Article
Publication date: 20 March 2023

Nadeem Rais, Akash Ved, Rizwan Ahmad, Kehkashan Parveen and Mohd. Shadab

Renal failure is an end-stage consequence after persistent hyperglycemia during diabetic nephropathy (DN), and the etiology of DN has been linked to oxidative stress. The purpose…

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Abstract

Purpose

Renal failure is an end-stage consequence after persistent hyperglycemia during diabetic nephropathy (DN), and the etiology of DN has been linked to oxidative stress. The purpose of this research was to determine the beneficial synergistic effects of S-Allyl Cysteine (SAC) and Taurine (TAU) on oxidative damage in the kidneys of type 2 diabetic rats induced by hyperglycemia.

Design/methodology/approach

Experimental diabetes was developed by administering intraperitoneal single dose of streptozotocin (STZ; 65 mg/kg) with nicotinamide (NA; 230 mg/kg) in adult rats. Diabetic and control rats were treated with SAC (150 mg/kg), TAU (200 mg/kg) or SAC and TAU combination (75 + 100 mg/kg) for four weeks. The estimation of body weight, fasting blood glucose (FBG), oral glucose tolerance test (OGTT), oxidative stress markers along with kidney histopathology was done to investigate the antidiabetic potential of SAC/TAU in the NA/STZ diabetic group.

Findings

The following results were obtained for the therapeutic efficacy of SAC/TAU: decrease in blood glucose level, decreased level of thiobarbituric acid reactive substances (TBARS) and increased levels of GSH, glutathione-s-transferase (GST) and catalase (CAT). SAC/TAU significantly modulated diabetes-induced histological changes in the kidney of rats.

Originality/value

SAC/TAU combination therapy modulated the oxidative stress markers in the kidney in diabetic rat model and also prevented oxidative damage as observed through histopathological findings.

Details

Arab Gulf Journal of Scientific Research, vol. 42 no. 2
Type: Research Article
ISSN: 1985-9899

Keywords

Open Access
Article
Publication date: 25 June 2024

Carmen Paola Padilla-Lozano, Jodie Padilla-Lozano, Giovanni Efraín Reyes Ortiz and Pablo Collazzo

The purpose of this study is to explore green innovation and its role in driving competitiveness in Ecuadorian manufacturing firms, focusing on structural equation modelings…

Abstract

Purpose

The purpose of this study is to explore green innovation and its role in driving competitiveness in Ecuadorian manufacturing firms, focusing on structural equation modelings, which account for more than 90% of the productive units and aggregate national income. The manufacturing sector in Ecuador reports variable growth since the start of the COVID pandemic, drawing more attention from practitioners, regulators and scholars alike, due to its distinctive footprint on people, profit and planet, particularly in the context of developing economies.

Design/methodology/approach

A model with two second-order constructs is developed and tested in a sample of 325 managers from manufacturing firms in Ecuador, using quantitative and cross-section methods.

Findings

After obtaining adjusted and validated metrics, a structural equation model is presented, where the main hypothesis is confirmed, supporting the positive impact of green innovation on competitiveness.

Practical implications

The research provides evidence on how manufacturing firms favoring green innovation in their long-term planning can unlock and sustain competitiveness. Policymakers could then offer incentives for firms to embed sustainable practices, with potential ripple effects along the supply chain, aggregating up competitiveness to industry and national levels.

Originality/value

The study aims to bridge the existing knowledge gap on the interplay of green innovation and competitiveness, claiming that the former significantly influences the latter, in an emerging market context, with incremental gains for all stakeholders, as posited by stakeholder theory.

Propósito

El propósito de esta investigación es explorar la innovación verde y su rol en la generación de competitividad en las empresas manufactureras ecuatorianas, centrándose en las PYMES, que representan más del 90 por ciento de las unidades productivas y del ingreso nacional agregado. El sector manufacturero en Ecuador reporta un crecimiento variable desde el inicio de la pandemia de COVID, lo cual atrae la atención de profesionales, reguladores y académicos por igual, debido a su huella distintiva en la sociedad, la rentabilidad y el planeta, particularmente en el contexto de las economías en desarrollo.

Diseño/metodología/enfoque

Se desarrolla y estima un modelo con dos constructos de segundo orden, en una muestra de 325 gerentes de empresas manufactureras del Ecuador, utilizando métodos cuantitativos y transversales.

Resultados

Tras obtener métricas ajustadas y validadas, se presenta un modelo de ecuaciones estructurales, donde se confirma la hipótesis principal, sustentando el impacto positivo de la innovación verde en la competitividad.

Implicaciones prácticas y sociales

Aportamos evidencia empírica sobre cómo las empresas manufactureras que favorecen iniciativas ecológicamente innovadoras en su planificación a largo plazo, pueden generar y sostener competitividad. Los reguladores podrían eventualmente diseñar incentivos para que las empresas incorporen prácticas sustentables, acumulando beneficios en la cadena de suministro, e incrementando así la competitividad a nivel de la industria y de la economía en su conjunto.

Originalidad/valor

Nuestro estudio aspira contribuir a cerrar la brecha en la literatura en la convergencia entre la innovación verde y la competitividad, argumentando que la primera influye significativamente en la segunda, en un contexto de mercado emergente, con beneficios incrementales para todas las partes interesadas, como lo postula la teoría de stakeholders.

Objetivo

O objetivo desta pesquisa é explorar a inovação verde e seu papel na promoção da competitividade nas empresas manufatureiras equatorianas, com foco nas PMEs, que representam mais de 90% das unidades produtivas e da renda nacional. O sector manufatureiro no Equador regista um crescimento variável desde o início da pandemia da COVID, atraindo mais atenção tanto de profissionais, reguladores como académicos, devido à sua pegada distinta nas pessoas, nos lucros e no planeta, particularmente no contexto das economias em desenvolvimento.

Desenho/metodologia/abordagem

Um modelo com dois construtos de segunda ordem é desenvolvido e testado em uma amostra de 325 gestores de empresas industriais no Equador, utilizando métodos quantitativos e transversais.

Resultados

Após a obtenção de métricas ajustadas e validadas, é apresentado um modelo de equações estruturais, onde é confirmada a hipótese principal, apoiando o impacto positivo da inovação verde na competitividade.

Implicações práticas e sociais

A nossa investigação fornece evidências sobre como as empresas industriais que favorecem iniciativas ecologicamente inovadoras no seu planeamento a longo prazo, podem aumentar e sustentar a competitividade. Os decisores políticos poderiam então oferecer incentivos às empresas para incorporar práticas sustentáveis, com potenciais efeitos em cascata ao longo da cadeia de abastecimento, agregando competitividade aos níveis industrial e nacional.

Originalidade/valor

O nosso estudo visa colmatar a lacuna de conhecimento existente sobre a interação entre inovação verde e competitividade, alegando que a primeira influencia significativamente a última, num contexto de mercado emergente, com ganhos incrementais para todas as partes interessadas, conforme postulado pela teoria dos stakeholders.

1 – 10 of 178