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Due to their capacity of water absorption, super absorbent polymers (SAPs) are greatly requested in hygienic applications, thus representing large volume products needing for a good biodegradability. This study aims to develop new SAPs for baby diapers by combining sodium alginate (SA) and cellulose nanocrystals (CNC) with acrylic acid (AA). The effect of different AA/SA ratios and CNC concentrations in the presence of ammonium persulfate (APS) as an initiator, and N–N-methylene bis-acrylamide (NMBA) as a cross-linker is investigated. We assess morphological and physicochemical properties of the SAPs, as well as their absorption characteristics and rheological properties. The results show that SAPs with AA/SA weight ratio of 70:30 containing 2% w/w CNC have the highest water absorption capacity, i.e., 78.4 g/g in saline solution. These SAPs also demonstrate high retention capacity and better absorption capacity under load than other SAPs. We further optimize the formulation by increasing the neutralization degree of AA and reducing the solid content, reaching an absorption capacity in the salt solution up to 100.08 g/g. Finally, the absorbent core made with fewer amounts of SAPs and fluff pulp led to functional properties superior to those of commercial baby diapers. High polysaccharide content SAPs could contribute to improve diaper sustainability. [ABSTRACT FROM AUTHOR]

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Polyvinyl chloride (PVC) and polyethylene terephthalate (PET) contribute significantly to global plastic waste, with only 9% recycled in recent years. In this work, these plastic wastes were upcycled as functional fillers to improve the rigid polyurethane foam (RPUF) properties. To attain this target, we leveraged the intrinsic polarity of the C=O and C-Cl groups of PVC and PET to induce intermolecular attractions with the N-H groups of the polyurethane matrix, evidenced by the observed IR peak shifts. This enhanced the nucleating effect during foaming, increasing the foams' compressive strengths by 77% and 22% with the addition of 10% PVC and 5% PET filler, respectively. Furthermore, the addition of PVC and PET fillers increased the foam volume. Thus, the collective utilization of PPW and its corresponding impact on the CO-based RPUF's properties signifies a reduction in carbon dioxide emissions by 14.15% and 17.52% for PVC and PET, respectively. Moreover, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) revealed improved thermal stability and degradation profiles of the produced RPUFs. Overall, this work highlights potential advancement in environmentally responsible upcycling strategies for common end-of-life plastic wastes, while enhancing rigid foam properties. [ABSTRACT FROM AUTHOR]

The goal of this study was to examine the predictors of sustainable tourism development during the post-COVID-19 pandemic period in the context of Bangladesh. Quantitative-type research was applied, and this study used a descriptive research design. A standardized questionnaire was used to collect 302 data points from actual indigenous tourists using an online purposive sampling method. A partial least squares structural equation modeling (PLS-SEM) approach was used to evaluate the data and test the hypotheses. The results of the PLS-SEM analysis method demonstrate that environmental integrity, social equity, economic prosperity, and technological adaption had a positive relationship with sustainable tourism development during the post-COVID-19 pandemic period in Bangladesh. This research article provides practical guidelines for tourism authorities (BTB, BPC, and so on) and stakeholders on how to effectively impact environmental integrity, social equity, economic prosperity, and technological adaption on sustainable tourism development during the post-COVID-19 pandemic period in the context of Bangladesh. This study recommends that influential strategic factors be utilized to develop a sustainable tourism business in Bangladesh, positioning it as an emerging tourism destination. [ABSTRACT FROM AUTHOR]

Insecticide resistance is widespread in global bed bug populations. Both common bed bugs and tropical bed bugs are pyrethroid-resistant among most field populations. Plant-based products and nonconventional pesticides offer minimal-risk strategies for managing bed bug resistance, but this strategy has yet to be formally evaluated in Cimex hemipterus (F.) (Hemiptera: Cimicidae). Here, several commercial plant-based formulations (Cedarcide, EcoRaider (also known as EcoVenger), EcoSMART, and Bio-D), a novel product, Provecta, and a pyrethroid insecticide, Pesguard FG161 were tested against pyrethroid-susceptible and resistant strains of C. hemipterus using direct spray, residual exposure, and egg dipping assays. Direct spray treatments outperform residual applications against all tested bed bug strains. Cedarcide exhibits the highest consistency in eliminating bed bugs, followed by EcoRaider, EcoSMART, and Provecta that outperform Bio-D and Pesguard FG161. In comparison to Pesguard FG161, all plant-based insecticide products and Provecta showed higher efficacy against pyrethroid-resistant strains. Although effective, product efficacy varies in terms of speed. Cedarcide kills all bed bugs within 1 min after spraying; however, other products can take up to 9 days to achieve 100% mortality. The efficacy of all products was reduced when evaluated on fabric surface (42%–65% mortality). Cedarcide and EcoRaider reduced egg hatchability by 37%–73% and 47%–70%, respectively. This study suggests that certain plant-based insecticides and an unconventional insecticide can serve as alternative direct spray treatments for managing tropical bed bugs, though their residual effects are limited. [ABSTRACT FROM AUTHOR]

The present study investigates the effect of ultrasonicated defatted muskmelon (Cucumis melo L.) seeds' flour-based edible coatings functionalized with oregano essential oil (OEO) on the postharvest shelf-life extension of sweet oranges (Citrus sinensis L.) at room temperature (23 ± 3 °C, RH: 40–45%) up to 15 days. The edible coatings (M2, M3, and M4) with increasing concentrations of oregano essential oil (1%, 1.5%, and 2%, respectively) were significantly (p < 0.05) effective in maintaining the quality attributes of oranges, such as physiological loss in weight (PLW), pH, titratable acidity (TA), total soluble solids (TSS), color, firmness, total phenolic contents (TPC), total flavonoids content (TFC), antioxidant activity (DPPH and ABTS assay), sensory attributes (aroma, texture, color, overall acceptability), and lower microbial load throughout the storage period in comparison to the control samples. The application of M4 treatment (defatted muskmelon seeds' flour-based edible coating with 2% oregano essential oil and ultrasonication treatment at 40% amplitude for 80 min) maintained higher consumer acceptability in sweet oranges on 15 days of storage with retained higher postharvest quality attributes such as physiological loss in weight (16.80%), pH (4.76), titratable acidity (0.63%), total soluble solids (11.89°Brix), color (L* = 49.84, a* = -3.07, b* = 41.59), firmness (939.86 N), total phenolics content (54.12 mg GAE/g), total flavonoids content (32.62 mg QE/g), antioxidant activity (DPPH = 64.16% and ABTS = 0.72 mmol 100 g−1), and sensory attributes (aroma = 4.77, texture = 4.36, color = 4.56, overall acceptability = 4.56). The control samples had unacceptable microbial and quality attributes on the 9th day of storage. The gas chromatography-mass spectrometry (GC–MS) analysis identified carvacrol, diethyl phthalate, p-Cymene, cyclopropane, trimethyl (2-methyl-1-propenylidene)-, linalool, terbutol, and thymol as significant compounds in the OEO. The results indicated that ultrasonicated defatted muskmelon seeds' flour-based edible coatings enriched with oregano essential oil are eco-friendly and sustainable alternatives to synthetic polymers for maintaining the quality attributes of orange fruits for up to 15 days. [ABSTRACT FROM AUTHOR]

As the global construction industry expands, it is imperative to prioritize economic sustainability due to the consequential effect on procurement practices. The procurement of building works, a pivotal phase in the realization of construction projects, requires a comprehensive framework to assess tenders that emphasise economic viability and align with sustainability principles. While traditional procurement processes primarily focus on cost considerations, the contemporary construction landscape necessitates a paradigm shift towards sustainable practices encompassing the economic dimension. Several studies have been conducted on public procurement and sustainability. Nevertheless, most of these studies focused on the environmental side of sustainability, leaving the social and economic dimensions unexplored. Hence, this study explores the sustainable economic criteria for assessing tenders in procuring building works. The study adopted the mixed research method; therefore, qualitative and quantitative data were employed in collecting the data for the study. The analysis deduced that the criteria for assessing the economic sustainability of tenders were categorized into management-related, technical, and commercial-related criteria, with the most significant variables being competitiveness, resource management skills, resource requirement assessment and profitability. The study's findings can potentially influence the assessment tenders of construction firms for building works. Thus, it suggested that the management practices of the bidders must be thoroughly evaluated as it is a crucial factor in ensuring economic sustainability from the onset of the project processes. This study presents a novel to ascertain the criteria for assessing the sustainable economy of tenders in procuring building works in the Ghanaian Construction Industry. The results of this study can be a source of data to guide the evaluation of tenders in the construction industry in Ghana and other developing countries within the Sub-Saharan Region. [ABSTRACT FROM AUTHOR]

The green consumerism movement is gaining steam in emerging nations with middle-income or higher populations, such as Vietnam, and is particularly well-liked in affluent countries. In addition, the importance of green consumerism is gaining significant traction, alongside efforts to promote ecologically friendly production and consumption. As the economy progressed, people's living standards improved, leading to a growing need for high-quality, safe products and services. This is particularly true for items that directly serve people and contribute to their everyday lives. Therefore, the article aims to evaluate the factors affecting green consumer behavior and sustainable consumption based on the structural equation model with the least squares method to test their hypotheses. The data were applied in the study through a survey of 360 consumers in 04 big cities in Vietnam. Research results showed that seven factors impact green consumption behavior, including (1) environmental awareness, (2) green product characteristics, (3) green marketing, (4) perceptions about green product prices, (5) social influence, (6) environmental policy, and (7) green consumption policy with significance 0.01. The finding explores green consumption behavior influencing sustainable consumption with a significance of 0.01. The practical implication helps managers, policymakers, and manufacturers consider applications to improve humanity and behavior green consumption in the global context of moving towards sustainable green development. The theory implication is to change behavior to improve greening production, reduce pollution and greenhouse emissions, and move towards sustainable development, bringing many practical economic and social benefits and intangible value for businesses. Simultaneously, the novelty of the study aids enterprises in staying abreast of this trend, enabling them to seize possibilities for fast growth, extend their market presence, and capitalize on governmental backing for businesses. Doi: 10.28991/ESJ-2024-08-06-07 Full Text: PDF

Abstract Green nanomaterials are increasingly used to improve plant growth and phytochemical traits. This study employed Eucalyptus globulus leaf extract, a medicinal plant, as a bio-reductant and capping agent to synthesize copper oxide nanoparticles (CuO-NPs), which were applied as seed primers for Lactuca sativa (lettuce), an annual species prized for its short germination time and rich bioactive compounds. Characterization of CuO-NPs using FTIR, XRD, SEM, and EDX confirmed their purity, crystalline structure, and an average particle size of 74.66 nm. The CuO-NPs were applied at concentrations of 0.01 mg/ml, 0.02 mg/ml, 0.03 mg/ml, and 0.04 mg/ml. At the highest concentration (0.04 mg/ml), significant reductions in physical growth parameters were observed, with plant length, height, and width measuring 7.85 cm, 5.50 cm, and 3.48 cm, respectively, compared to 13.70 cm, 11.52 cm, and 11.18 cm in control plants. Phytochemical analysis identified tannins, alkaloids, phytosterols, saponins, flavonoids, and glycosides in all methanolic extracts, while carotenoids were absent at higher concentrations (0.03 mg/ml and 0.04 mg/ml) due to phytotoxicity. FTIR analysis revealed a prominent peak at 858 cm⁻¹ at 0.01 mg/ml, indicating the presence of antioxidant-rich aromatic phenyl compounds. In conclusion, the study demonstrates that CuO-NPs synthesized using Eucalyptus globulus extract enhance phytochemical constituents at optimal concentrations but inhibit growth and reduce key phytochemicals at higher doses. Future research should optimize nanoparticle concentrations to minimize phytotoxicity while maximizing beneficial effects on plant growth and bioactive compounds.

Abstract Changing climate patterns are a major contributing factor in the failure of government initiatives and sustainable crop production, particularly for subsistence smallholder farming systems in Botswana. These challenges faced by small-scale farmers require more than just programs and policy implementation; continuous assessment is essential to achieve their mandate. Moreover, there is limited research in Botswana to provide an understanding of issues related to policy implementation and the progression of crop production after the implementation of these policies. Therefore, this systematic review aims to evaluate government-implemented programs and policies for promoting sustainable crop production in Botswana, examining their successes, failures and providing recommendations for sustainable crop production. PRISMA guidelines were followed for systematic review via the Google Scholar database, and inclusion and exclusion criteria were observed for the eligibility of the assessed articles. The major findings indicate that several programs and national policies for sustainable crop production have been implemented in Botswana over the past decades. However, crop production continues to decline despite governmental efforts. The increasing adverse effects of climate change have contributed to the failure of government efforts. To advance sustainable crop production and resilience to climate change, the following adaptation approaches are recommended: efficient and sustainable use of water resources in agriculture, policy reformation, capacity building, regional collaboration, and climate-smart agriculture. Moreover, extensive evaluations are necessary for policies and implemented programs. This includes timely adjustments to policies on the basis of feedback from monitoring and evaluating specific, measurable indicators of ongoing policies and programs. Furthermore, engaging relevant stakeholders and local community members in the monitoring and evaluation process can enhance the relevance and accuracy of implemented government policies or programs.

The primary purpose of this paper is to call for more research on the competencies needed to promote sustainable urban development. Our premise is that sustainable urban development does not occur without transcending differing interests and identifying novel ways to collaborate across organisational and institutional boundaries. Relatedly, sustainable urban development calls for mobilisation and pooling of scattered assets. Therefore, sustainable urban development calls for enhanced competencies that significantly differ from the traditional capabilities valued in public administration. This premise leads us to determine what competencies are needed to support sustainable urban development and to ask how fragmented capabilities can be pooled to serve the common purpose. Sustainable urban development necessitates transformative system change, dependent on diverse stakeholders, relying on many actors’ knowledge and capabilities instead of a few selected actors’ expertise. To achieve a systemic perspective, we need to be able to group the capabilities and competencies; otherwise. We propose a conceptual framework drawing on insights from public administration, management studies, organisation studies, and the Intergovernmental Panel on Climate Change (IPCC) that might allow us to move from individual capabilities to shared competencies and collective learning processes, thus adding analytical leverage to our efforts to strengthen the competencies embedded in systems but held by individuals. For analytical purposes, we adopt the concept of the competence set. It is geared toward identifying how different capabilities of many actors could be integrated at a systemic level so that a set would serve both the entire urban system and the actors embedded in it.

Abstract Solid waste management is a demanding issue globally. Zimbabwe is among nations in Southern Africa that faces political and socio-economic challenges in solid waste management including landfill management. However, proper landfill management is critical to minimise environmental health risks of solid waste and Zimbabwe is no exception. Therefore, this paper focuses on sustainable landfill management in Zimbabwe based on SHEQ management systems by reviewing existing literature. Literature denotes that generation of solid waste destined for landfills accelerate due to increase of population, urbanisation and diseases. Hazardous and non-hazardous solid waste from institutions, households and industries is transported by municipalities to landfills. Solid waste is disposed and left uncovered or compacted on improperly engineered landfills devoid of gas and leachate control systems. Landfills in Zimbabwe are far from sustainable since they cause negative impacts to terrestrial, aquatic and atmospheric ecosystems and human health is not spared as hazardous wastes are found at landfills. Nevertheless, literature reveals that SHEQ management systems are vital to attain sustainability in the realm of landfill management. SHEQ management systems contribute to continuous improvement of landfills management strategies through application of the Deming cycle. SHEQ management systems that support protection of workers and waste workers are included. The system supports inclusion of various stakeholders, correct documentation of data and conformity to national and international legislation, policies and standards when dealing with waste. SHEQ management systems support recycling, reuse and recovery processes during waste management. The review concludes that SHEQ management systems are necessary to reach sustainable landfill management in Zimbabwe.

The present study investigates the significance of the utilization of biodiesel derived from waste cooking oil in diesel engines and its impact on engine output and environmental pollution after blending with diesel and 1-pentanol. The higher values of the ignition index and comprehensive performance index of 4.34 × 10−4mass/min°C2 and 13.71× 10−6 mass2/min2 °C3, respectively, for D70B20P10 (70 % diesel, 20 % biodiesel & 10 % 1-pentanol by volume) indicate superior combustion performance. At full load, carbon monoxide and unburned hydrocarbon emissions from 1-pentanol blended fuels decrease significantly, ranging from 40 % to 52 % and 30.76–46.15 % compared to diesel. The D70B20P10 also showed an improved thermal efficiency of 28.68 % among all tested fuels at full load but slightly lower than diesel (29.56 %). Diesel demonstrated superior in-cylinder pressure (ICP) of 77 bar and heat release rate (HRR) of 41.1 J/ºCA owing to its excellent combustion characteristics. Introducing 5–10 % 1-pentanol in blend improved combustion, elevating ICP and HRR, attributed to enhanced fuel atomization and oxygen content. The sustainable process index value obtained for a global index per person is 0.002×10−4cap Litre-1, which lies between 0 and 1, indicates sustainability and compatibility of biodiesel production demonstration by universal biofuels (Andhra Pradesh).

The paper aims to highlight an evolution of agriculture from the perspective of climate mitigation with the implications set out in the Common Agricultural Policy. The technical performance of agriculture has led to the restoration of paradigms in agriculture in relation to the movement of vectors to achieve environmental conditions. An essential premise for the application of the methodological analysis was the evaluation of agricultural systems which we will methodologically explore how the information being extracted from the available statistical databases Agridata. The development of a conceptual system for the feasibility of soil techniques by responsibly managing agricultural technology mechanisms can be expected to mitigate the impact of climate change. The relevance of this research aims at building innovative agricultural models that make feasible both the adaptation of agricultural technologies based on the implementation of sustainable agriculture and their interconnectivity in the local environment, in order to reduce greenhouse gas emissions, alternatively maintaining agricultural productivity in the development region vision.

Comisión Nacional de Energía Atómica (CNEA) has the responsibility for restoring uranium mining facilities once the operations have finished. CNEA, within its Environmental Program and in compliance with its legal responsibilities, decides to implement a restoration project for all sites related to the mining and processing of uranium ores. The Malargüe Site is located within the Province of Mendoza in the city of Malargüe. It is the first site to successfully complete its remediation. The activities consist of relocation of tailings to an engineering repository. The tailings management (encapsulation) and rehabilitation of the area was finished in June 2017. The remediation alternative for the ore tailings was selected after conducting comparative studies and submitted the project to the society for consideration. The objective of the encapsulation of the mineral tails is to isolate them from the environment, also proceeding with the decontamination and rehabilitation of the area (landscaping, post-closure monitoring and 20 years monitoring period). Encapsulation consisted of the construction of a containment cell for the mine tailings, to isolate them and prevent pollutants from entering the environment through the transfer routes. To clean the impacted areas, the soil was removed, it was incorporated into the encapsulation, and the filling was carried out with natural soils from the area. Remediation prevents radon transfer to the environment, as 222Ra is an alpha emitter with a half-life of four days, which produces its own radioactive progeny. Radon progeny are solids, and when a 222Ra nucleus emits an alpha particle into the air, the resulting 218Po nucleus, momentarily electrically charged, adheres to any dust particle. Remediation prevents the discharge into the air containing radon and also containing dust particles charged with intensely radioactive radon progeny. The tasks mentioned make it possible to decrease radon emanation, reduce radiological risks to the public and prevent the entry of rainwater into the system. In addition, the containment system prevents the discharge of contaminated liquids into the environment, avoiding contamination of the groundwater. All these activities are according to the concepts of sustainability.

Sustainable fishing ports play a vital role in ensuring the long-term health of marine ecosystems and supporting the livelihoods of coastal communities. This article explores the factors that contribute to the development of sustainable fishing ports, which consider environmental, social, and economic aspects in a balanced way. This research aims to develop a model of sustainable fishing port considering significant factors which influenced the sustainable fishing port, especially for fishing ports located in East Java Province, Indonesia. In this term, the sustainable fishing port is well known as an eco-fishing port. Purposive sampling was used to choose 215 participants from representatives of the government, private sectors in the fishing field, and fishing communities of six potential fishing ports in East Java Province, Indonesia. The data was analysed using a partial least square (PLS) approach with SmartPLS 3. The findings of the research indicate that eight hypotheses (H1, H2, H3, H4, H5, H7, H8 and H11) are supported while three hypotheses (H6, H9, and H10) are not supported. The study reveals a significant correlation between market demand, community welfare, infrastructure, environmental carrying capacity, and regulation. It is also found that market demand, community welfare, infrastructure, environmental carrying capacity, and regulation have significant positive relations with eco-fishing ports. The positive relationship indicates that adherence to these regulations fosters responsible fishing methods, preventing overexploitation of fish stocks, and contributes to the conservation of marine environments, ensuring the port operates in harmony with natural ecosystems and local communities.

Abstract As one of the mainstream biodegradable materials, poly(butylene adipate-co-terephthalate) (PBAT) foams offer a sustainable alternative to traditional plastic foams, effectively reducing environmental pollution. However, the high cost and poor mechanical performance of PBAT foams impede their practical application. Herein, the glycidyl methacrylate-grafted biomass lignin (GML) was used to produce a PBAT/GML composite foam with good foaming performance and mechanical properties at high lignin-filling amounts by twin-screw melting free radical polymerization and supercritical CO2 foaming process. The compatibility of GML in the PBAT matrix was improved due to the formation of ester bonds in modified lignin, endowing the PBAT/GML (PGML) composite foam with exceptional foaming performance. Additionally, the mechanical properties of PGML composite foam were remarkably enhanced due to the introduction of the abundant aromatic structures of GML and the construction of a stable covalent crosslinking network. The compressive strengths and compression modulus of the PGML foam were improved by 2.53 times and 2.47 times, while its bending strength and bending modulus were improved by 1.27 times and 3.92 times compared to the neat PBAT. This research affords a new strategy for developing low-cost biodegradable biomass PBAT/lignin composite foam materials with good foaming performance and mechanical properties. Graphical abstract

Abstract Solar energy has become a prominent and crucial source of clean energy due to the increasing global demand for electricity. There is a prevailing global trend towards the construction of solar farms as a means of energy generation. This study aims to assess multiple criteria encompassing urban, environmental, and social aspects in order to ascertain the optimal site for constructing solar farms. The evaluation primarily focuses on characteristics such as topography, solar radiation, accessibility, land use, and proximity to roads and power stations. In order to acquire the necessary spatial fit model, the data was evaluated utilizing a Geographic Information System (GIS) program, and the criteria were subsequently consolidated into an integrated geographic information system. A comprehensive review of the existing body of literature reveals that environmental factors, specifically solar radiation and aspect, play a crucial role in determining the suitable places for the establishment of solar energy collection projects (Merrouni et al. in Energy Procedia 49:2270-2279, 2013; McKinney in J Student Res Environ Sci Appalac 4:1-14, 2014). Furthermore, other analysis factors such as proximity to built-up regions, closeness to power lines, and proximity to roadways are taken into account (Hott et al. in GIS-based Spatial Analysis For LargeScale Solar Power And Transmission Line Issues: Case Study of Wyoming, U.S. In: Proceedings of the 41st American Solar Energy Society Meeting, 2012; Effat in Int J Adv Remote Sens GIS 2:205-220, 2013). These criteria have an impact on the cost of solar farms. The objective of this study was to assess several aspects influencing the selection of an optimal location for a solar energy farm, taking into consideration the aforementioned criteria. The study was carried out in New Aswan city, utilizing data obtained from the Urban Planning Authority within the Ministry of Housing and Urban Development, as well as the New Aswan City AuthorityI generated cartographic representations and compiled quantitative data, which informed our selection of places that met the established criteria through the utilization of a Geographic Information System (GIS) software. Upon the conclusion of the study, numerous locations that satisfied the established criteria were selected. The present study focuses on regions with high capacity, and the findings are depicted in the form of spatial and objective maps. One of the primary benefits associated with the utilization of this methodology lies in its versatility, as it can be implemented across several domains. Furthermore, a straightforward adjustment of the criteria facilitates its application in the selection of optimal locations for wind farms.

Abstract A novel synthetic pathway for synthesizing isocyanate-free polyurethanes is reported here. β-Amino alcohols were efficiently synthesized from the aminolysis of the epoxide ring of (R)-(+)-limonene oxide with different primary amines as nucleophiles and hot water as catalysts. The regio- and diastereoselectivities of the reactions were investigated and supported by computational studies. DFT calculations were performed to understand the experimental results more deeply. It confirmed the crucial roles of water molecules and the nature of the nucleophile in forming the products. The formation of the product is entirely driven by the free energy of activation that affects the reaction rate. Cyclic carbamates were prepared from β-amino alcohols using the dialkyl carbonate (DAC) chemistry. An oligourethane was obtained from Anionic Ring-Opening Polymerization (AROP) of a cyclic carbamate derived from (R)-(+)-limonene-oxide. All the products were characterized by employing 1H and 13C NMR spectroscopies. The assignments of the signals in 1H and 13C NMR spectra were also supported by 2D NMR spectroscopy.

Abstract Effective River system management is essential for conserving water resources, improving agricultural productivity, and sustaining ecological health. Remote sensing is crucial for evaluating and tracking several elements of river systems. The study explores the incorporation of remote sensing into Geographic Information Systems (GIS) and Artificial Intelligence (AI) to acquire a thorough comprehension of river dynamics and accurately record minor fluctuations in river conditions. The study demonstrates the utilization of satellite series such as Landsat, Sentinel to enhance monitoring and management methods through the analysis of high-resolution imagery and data. AI helps remote sensing by automating data processing, finding patterns, and making predictions about river conditions and trends. Machine learning techniques enhance the analytical capabilities of GIS and remote sensing data by accurately classifying land cover, predicting flood events, and evaluating water quality. The research highlights the novel approaches of utilizing remote sensing and GIS to tackle the issues related to data accessibility, analysis, and verification. The study also acknowledges specific constraints and difficulties, such as concerns over the accessibility of data, intricacies in analysis, and the processes involved in validation. The statement underscores the importance of ongoing research, technical progress, and collaboration among stakeholders to overcome these limitations and fully exploit the capabilities of remote sensing, artificial intelligence, and geographic information systems. An integrated approach is crucial for the development of successful policies and strategies that improve the resilience and sustainable management of river systems. This approach eventually promotes sustainable water resource practices and ecological preservation.

Residential compounds are not limited to residential activity only, but other human activities exist through the work of the proper landscape design for the spaces between the buildings, and some of them link the buildings and those activities. The landscape design varies from one residential compound to another depending on the nature of the surrounding environment, the type of user, the required activity, and the general character of the area. This paper aims to decide and clear monitoring of the set of needs and humanity within the residential communities through a toolset of a check list from earlier projects implemented and currently used at the international and local levels. Three approaches (theoretical, analytical, and applied) were implemented. First, the components affecting the landscape add to reviewing the principles of landscape design. Some examples of landscape design in residential communities in (Dubai) were analyzed using the comparative analytical approach. Finally, the applied approach used on the landscape design of existing residential communities in Cairo to measure the success of their designs and that they are temporally compatible (suitable for all ages and groups), spatially (best use of the entire space), and sustainable (preserving the environment and using appropriate environmental elements) To get the best landscape image in residential compounds. لا تقتصر المجمعات السكنية على النشاط السكني فقط، بل توجد أنشطة انسانية أخرى يمكن استخدامها وذلك من خلال عمل التصميم الجيد لتنسيق المواقع والمناسب للصورة البصرية الطبيعية للمساحات البينية والفراغات العمرانية بين المباني وتكون متصلة مع تلك الأنشطة. يختلف تصميم تنسيق المواقع من مجمع سكني إلى آخر بحسب طبيعة البيئة المحيطة ونوع احتياج المستخدم والنشاط المطلوب والطابع العام للمنطقة. يهدف هذا البحث إلى تحديد ورصد واضح لمجموعة الاحتياجات الإنسانية داخل المجمعات السكنية تحققها العناصر التصميمية لتصميم تنسيق المواقع القائمة على تحليل مجموعة من المشاريع السابقة التي تم تنفيذها والتي تستخدم حاليًا على المستويين الدولي والمحلي. تم تطبيق ثلاثة مناهج في البحث (نظرية وتحليلية وتطبيقية)، بداية تمت دراسة المكونات الرئيسية المؤثرة على تصميم تنسيق المواقع والصورة البصرية الطبيعية. ثم تحليل بعض الأمثلة لتصميم تنسيق المواقع في المجمعات السكنية في (دبي) وعمل تحليل مقارن وتطبيقي على تصميم تنسيق المواقع والصورة البصرية الطبيعية للمجمعات السكنية الحالية في القاهرة لقياس نجاح تصاميمها وأنها متوافقة زمنيًا تتناسب مع جميع الأعمار والمجموعات، ومكانيًا كأفضل استخدام للمساحة الكاملة ومستدامة تحقق الحفاظ على البيئة واستخدام العناصر البيئية المناسبة للحصول على أفضل صورة بصرية للمناظر الطبيعية في المجمعات السكنية.

The assessment of the thermal energy performance of earth-based buildings with respect to the semi-arid Mediterranean climate of Morocco is scarce, even if the country is historically known for its earthen dwellings. According to this need, this work aims to understand and evaluate the indoor thermal comfort and energy performances of passive building in two different locations. We have used EnergyPlus modeling tool and in addition, the monitored ten-day indoor temperatures in two different thermal zones in the test prototype to justify the empirical validation of Building Energy Model. The findings demonstrate, the use of compressed earth blocks coupled with passive design strategies provides better comfort and great sustainability. Thus, the summer discomfort hours are reduced about 12% for both cities compared to conventional building. However, the combination of semi-arid climate-responsive passive design has allowed to reach a thermal energy intensity reduction difference from 20 to 65 kWh.m−2. y−1.

This study represents the culmination of our efforts to explore the crucial role of polyester composites in the field of biocomposites, highlighting their importance in advanced materials technologies. Our primary objective has been to thoroughly elucidate the significance of polyester composites within biocomposites, with a detailed examination of their impact on advanced material technologies. Through this research, we have meticulously investigated the properties of polyesters derived from biodegradable polymers, analyzing their intricate structure-property relationships and potential applications in bio-based production. To drive the industrial adoption of bio-based polyesters, our work emphasizes the need for developing economically viable production methodologies, exploring ecologically sustainable and effective material designs, and advocating for robust policy support to facilitate the commercialization of bio-based polyesters. We propose that future research should focus on the innovation of novel bio-based monomers as sustainable raw material sources, the design of diverse polyester structures utilizing material genome technology, and a comprehensive understanding of the degradation processes and long-term performance of bio-based polyesters. The advancement in this domain relies on interdisciplinary collaboration across materials science, engineering, and chemistry. Our findings underscore that through such interdisciplinary cooperation, a broader spectrum of bio-based polyester products can be developed, thereby expanding their industrial applications. In this context, our investigation aims to contribute to the advancement of sustainable materials and their more effective integration into future material technologies. [ABSTRACT FROM AUTHOR]

The European Union’s Green Deal emphasizes life science and biotechnology as key drivers for achieving a circular economy. However, the prevalent use of non-sustainable single-use plastics derived from petrochemical sources in life science research and development contradicts this ecological goal. This study presents a viable alternative through on-site sterile 3D printing of single-use plastics using poly(lactic acid) (PLA). The sterile printing of PLA demonstrates a substantial reduction in CO2eq emissions per shake flask, decreasing from 260 g CO2eq to 145 g CO2eq. Suitability for cell culture was demonstrated for sterile printed PLA, autoclaved high-temperature PLA and for suspension cell cultures in shake flasks using CHO and insect cells as well as adherent Vero cell cultures in cell culture wells. Further optimization of sustainable shake flasks is achieved by utilizing recycled PLA, resulting in a remarkable reduction to 73 g CO2eq, constituting a 72% decrease in CO2eq emissions compared to conventional single-use plastics. Moreover, by employing geometric optimization to minimize material usage, emissions can be further reduced to 44 g CO2eq, representing an 83% reduction in CO2eq emissions. Anticipated advancements in PLA production suggest future carbon net negative PLA production, potentially achieving zero carbon emissions for single-use plastics using PLA. The exceptionally cost-effective nature of 3D printed single-use plastics, coupled with negligible capital costs for implementation, positions sterile 3D printing as a practical solution aligned with the 2030 Green Deal goals. Moreover, ongoing improvements in bioplastic production underscore the feasibility of meeting the 2050 targets of carbon neutrality for single-use plastics in life science research and development. [ABSTRACT FROM AUTHOR]

Although we know a great deal about creating ventures that can generate financial wealth for entrepreneurs, we have largely excluded, ignored, or "danced around" the creation of nonprofit ventures (with some important exceptions). We propose research to explore how initiating, engaging, and performing nonprofit venturing may differ from for-profit venturing and how some nonprofit entrepreneurs and their ventures differ from other nonprofit entrepreneurs and their ventures. We hope this essay convinces some entrepreneurship scholars that investigating the creation of nonprofit ventures is valuable and can add richness and vibrancy to the entrepreneurship field. [ABSTRACT FROM AUTHOR]

Abstract The Food and Drug Administration (FDA) authorized the administration of ritonavir (RIT)-boosted nirmatrelvir (NMV) on May 25, 2023, for the treatment of mild to moderate COVID-19 in patients who are at high risk of developing severe COVID-19. In accordance with sustainability and environmental friendliness, simple, eco-friendly, and sustainable spectrophotometric methods were established for concurrently estimating RIT and NMV in newly launched copackaged pills. The suggested solutions for resolving the spectral overlap between RIT and NMV involve the following mathematical methods: the first derivative method (1D), second derivative method (2D), and dual-wavelength zero-order method (DWZ). When ethanol was used as a green dilution solvent, the linearity range was adjusted (10–250 µg/mL) for both drugs. The procedures resulted in a high correlation coefficient (not less than 0.9996) and satisfactory levels of detection and quantification. Additionally, method validation was performed in accordance with International Council for Harmonization norms. Moreover, a detailed ecological and sustainability evaluation protocol was established to confirm the greenness and whiteness of the methods. Finally, the proposed method, along with previously reported methods for analysing NMV and RIT, were reviewed analytically and ecologically.

This study investigates the impact of lean and green supply chain practices on business process performance and sustainable supply chain performance. The research utilises the resource-based view (RBV) theory to construct a conceptual model wherein lean and green supply chain practices are employed to augment business processes and sustainable performance. Concurrently, dynamic capabilities theory is applied to signify an organisation’s capacity to adapt and evolve in response to internal and external pressures from customers and competitors. The conceptual model is validated using structural equation modelling with a sample of 170 supply chain practitioners from the apparel and textile supply chain in Jordan. Results indicate that lean practices exhibit no direct impact, whereas green practices significantly influence business process performance and indirectly affect sustainable supply chain performance. Business process performance does not mediate the relationship for lean practices, but it does so for green practices. Moreover, the environmental orientation of both competitors and customers negatively moderates the impact of green practices on business processes and sustainable supply chain performance. These findings contribute to existing literature and underscore the crucial role of green supply chain practices in enhancing sustainable supply chain performance in the apparel and textile industry.

Of the 37% of carbon dioxide emissions generated by the construction industry, 5–7% comes from cement processing. In response to this problem, ways to utilize soil, a material with low energy consumption, are being explored as an eco-friendly option. In particular, eco-friendly design is being emphasized in the construction field through 3D printing technology. The research method proceeds in two stages. The first measures the changes in drying shrinkage, volume mass, compressive strength, and flexural strength over 7 days for a test specimen created by mixing coffee, charcoal, and rice bran with Hwangto. In the second step, slaked lime, a solidifying material, is mixed and tested under the same test specimen conditions as in the first. As a result of the experiment, the higher the mixing ratio of Hwangto, the greater the compressive strength and flexural strength. In particular, coffee exhibited the highest compressive strength at 1.50MPa, while charcoal demonstrated the highest flexural strength at 0.51MPa. However, when solidifying materials were mixed, the overall strength decreased, especially in the case of coffee (1.50MPa for the first time/0.87MPa for the second time), which showed a 42% decrease. Overall, charcoal was the most suitable mixing material and exhibited consistent and stable strength values in all experiments. Based on these experimental results, a 1/50 scale pavilion was produced through 3D printing. The stable shape and appropriate strength of the result were confirmed, making it suitable for educational or practical purposes. It suggests the possibility of use across industries.

Concrete is one of the most commonly used materials in civil engineering construction, and it continues to have increased production. This puts pressure on the consumption of its constituent materials, including Portland cement and aggregates. There are environmental consequences related to the increased emission of CO2 that are associated with the production process of Portland cement. This has led to the development and use of alternative cementitious materials, mainly in the form of condensed silica fume, pulverised fuel ash, and ground granulated blast furnace slag. All of these are by-products of the silicon, electrical power generation, and iron production industries, respectively. In recent years, attention has turned to the possible use of sustainable bio-waste materials that might contribute to the replacement of Portland cement in concrete. This research investigates the effects of using rice husk ash as cement replacement material on the 1 to 28-day concrete properties, including the compressive strength, workability, and durability of concrete. The findings indicate that including rice husk ash in concrete can improve its strength at 3–28 days for percentage replacements of 5% to 20% (ranging from 2.4% to 18.7% increase) and improvements from 1 day for 20% replacement (with 11.1% increase). Any percentage replacement with rice husk ash also reduced the air permeability by 21.4% and therefore improved the durability, while there was a small reduction in the workability with increased replacement.

Purpose Evaluation of the efficacy of two novel formulations of arginine and theobromine in remineralizing artificial enamel defects using in vitro testing techniques- Microhardness and SEMMaterials and methods Enamel slabs measuring 3 mm by 3 mm by 1.5 mm were created using 11 healthy premolars that were excised for orthodontic treatment. Group 1 (control, treated with merely a remineralization solution), Group 2 (0.05% arginine in 10 ml distilled water), and Group 3 (2% theobromine in 10 ml distilled water) were the three groups to which the slabs were randomly allocated (n = 7 per group). The pH cycle was run for 14 days, starting with a 72-h demineralization period and ending with 11 days of remineralization in the corresponding solutions. Prior to and during remineralization, microhardness was measured, and surface features were assessed using scanning electron microscopy (SEM). Statistical analysis, including Paired T Test, one-way ANOVA, and post hoc Tukey tests, determined that the mean values were significant at the 0.05 level.Results The control group showed a mean microhardness increase from 192.09 ± 19.30 to 208.58 ± 5.76. The arginine group increased significantly from 217.20 ± 4.24 to 304.00 ± 15.96, and the theobromine group from 214.09 ± 7.67 to 283.14 ± 10.91. Statistical analysis indicated that both arginine and theobromine groups had significantly greater microhardness improvements compared to the control (p

The aim of this study was to assess the feasibility of creating a prototype of a self-sufficient houseboat that is capable of prolonged independence from power grids and freshwater sources. In this design, electricity demand is met by a photovoltaic installation, and the energy is stored in batteries. Fresh water for living needs may be obtained from many sources, depending on the environmental conditions, such as through purifying outboard water, desalinating seawater, and collecting and storing rainwater. No waste production of the vessel can be achieved in two ways: waste can be treated and discharged into a body of water, or processed into fertiliser for later use in agriculture. Four possible locations were analysed: Rome, Lisbon, Gdańsk and Stockholm. The findings reveal that the length of time for which the unit is autonomous and emission-free depends on the geographical location of the facility. In periods when there is overproduction of energy, the system can produce hydrogen, donate energy to the grid, use it for the needs of its own movement, or perform other useful work, e.g. cleaning or aerating the water body on which it is floating.

The service-learning strategy is an educational approach, which combines both academic study and community needs to improve design solutions by providing the students with an educational plan to develop their skills in solving real design problems as a way of contributing to their community and society. This Research aimed at identifying the impact of the service learning strategy in developing packaging design skills, as well as to investigate the degree of continuity of the impact of the service learning strategy in developing packaging design skills for students of fine arts at the Universities of Alexandria and Pharos, at least one month after its application has been completed. Research was applied on a sample consists of (22) male and female students in the third year. In the statistical analysis of the data, the researcher depended on the Wilcoxon test and the size of the effect. The results of the research revealed that there was a statistically significant effect of the service learning strategy in developing packaging design skills, the continuity of the statistically significant effect of the service-learning strategy in developing the skills of designing packaging among students of fine arts at the Universities of Alexandria and Pharos one month after the end of its application. The results were discussed and interpreted in the light of the theoretical framework and previous studies. In the light of the research results, some educational recommendations and research suggestions were presented.

This study was made to construct the Ulur-Ulur tradition that emerged during the Majapahait period. The Ulur-Ulur tradition has passed through several periods of time, it is certainly interesting to study why it is still existence until now. The Ulur-Ulur tradition was still existence until the time of Islamic domination. What is the preservation of the Ulur-ulur tradition related to his ability to read discourse in each period? So that it has a different discourse in each period? or the existence of the Ulur-Ulur tradition due to the tolerance of the predominantly Islamic local community towards the previous culture? On the other hand, did the Ulur-Ulur tradition also negotiate itself from Islamic domination? This research uses historical and ethnographic methods. This study has three findings, first: the existence of the Ulur-Ulur tradition because of its ability to read discourse in each era, so that the Ulur-Ulur tradition has various meanings. Second, the tolerance of the majority Islamic community also maintains the existence of the Ulur-Ulur tradition. Third, the negotiation between the Ulur-ulur tradition and Islam, is also the key to the existence of tradition, the form of negotiation can be seen from the meaning of the offering.

Abstract Environmental concerns and climate protection are gaining increasing emphasis nowadays. A growing number of industries and scientific fields are involved in this trend. Sustainable electronics is an emerging research strand. Environmentally friendly and biodegradable or biobased raw materials can be used for the development of green flexible electronic devices, which may serve to reduce the pollution generated by plastics and electronics waste. In this work, we present cytocompatible, electrically conductive structures of nanocarbon water-soluble composites based on starch films. To accomplish this goal, potato starch-based films with glycerol as a plasticiser were developed along with a water-soluble vehicle for nanocarbon-based electroconductive pastes specifically dedicated to screen printing technology. Films were characterized by optical microscopy, scanning electron microscopy (SEM) mechanical properties and surface free energy.

South Africa, amidst the Fourth Industrial Revolution’s challenges, explores sustainable education intersecting with community development. Employing a mixed-methods approach, the study scrutinized educational dynamics. A case study method selected three secondary schools, involving 105 learners were purposively selected for this study. The study was underpinned by the human capital theory. This theoretical framework highlights the importance of addressing systemic inequities and promoting social justice. A questionnaire was used as a data collection tool. Qualitative data captured community perspectives, advocating for technology integration in education. Overcoming barriers like infrastructure and digital literacy was seen as crucial. The study findings highlighted integrating STEM education into South Africa’s curriculum, focusing on interdisciplinary strategies to nurture creativity, critical thinking, and problem-solving skills. STEAM courses were seen as a way which prepare students for the 4IR, fostering adaptability and future employment readiness. Lack of electricity, computers, and availability of computer training was revealed as one of the lacking factors among teachers in schools. Themes were drawn and discussed in relation to the research question. The study suggests assessing long-term impacts on community indicators like economic empowerment and health. The study concluded that police makers and curriculum designers may need to re-evaluate educational systems for STEAM. The study therefore recommended that it may be of great help if rigorous outcome evaluation measures of educational intervention would be effective in schools. Also, analyzing policy frameworks was recommended as essential for national development agendas, and bridging policy gaps

Since the beginning of river valley civilizations, humans have sought to harness the potential of flowing waters. The monumental structures of dams have been instrumental in damming these flowing waters and providing a wide range of benefits to society, including irrigation, drinking water, and generating clean energy. The present paper reviews in detail the hydropower reservoirs (dams) and presents a broader depiction of the 3Ps associated with their profits, problems, and planning. A literature review pertaining to dam construction and their impacts has been undertaken to analyze various approaches involving studies on socio-economic and environmental indicators and sustainability/risk factors related to dams. Various online search engines have been used to identify the desired studies and research for review. The first section of the paper gives a detailed account of the contribution (i.e., profits) made by dams to the economic development of humanity. The second part presents the negative social and environmental impacts (i.e., problems) of dams. As the paper proceeds, numerous tools/models analyzed during the literature review are presented that can be used to mitigate the negative fallouts of these dams (i.e., planning). However, it has been found that all these methods provide fragmented information with no certainty regarding which essential aspects require more emphasis while planning for these superstructures. Thus, a basic uniform frame is suggested, showcasing the fundamental and most critical aspects to be considered while planning a dam structure, which are described according to the three phases of dam construction, i.e., pre-construction, construction, and post-construction phases. While presenting the 3Ps (profits, problems and planning) of dams and analyzing their pitfalls, the 3Is (innovative keys) are recommended, emphasizing innovative technologies, innovative planning, and innovative solutions, which are needed in making these dams more optimal, judicious, and sustainable.

Kota dan teknologi tumbuh bersama seiring waktu. Seiring dengan pertumbuhan tersebut, kota menghadapi tantangan seperti penurunan kualitas lingkungan, dinamika sosial, serta ketimpangan ekonomi. Konsep inovasi smart city dinilai potensial untuk diterapkan sebagai wujud pemberdayaan Ibu Kota Negara (IKN) yang berkelanjutan. International Institute for Management Development tahun 2023 menyatakan bahwa Singapura, Canberra, Copenhagen, Helsinki, dan Oslo memiliki peringkat dan strategi inovasi smart city terbaik yang dapat dijadikan sebagai best practice untuk pembangunan IKN. Penelitian ini menggunakan pendekatan kualitatif dan analisis isi dengan metode eksploratif untuk memahami secara mendalam dan mendeskripsikan hubungan dan strategi inovasi smart city untuk IKN yang berkelanjutan dengan best practice dari lima kota dunia. Dalam hasil penelitian ini, strategi inovasi smart city dibagi menjadi tiga pilar, meliputi smart environment, smart community, serta smart economy. Pembagian pilar ini berlandaskan kepada kebutuhan dasar dalam pembangunan ibu kota yang holistik dan berkelanjutan serta Rencana Induk Ibu Kota Negara.

The worldwide fashion business is seeing swift expansion, but, the adoption of rapid fashion has detrimental effects on ecological sustainability. Sustainable halal fashion, which emphasises quality, sustainability, and ethical values, offers a solution to address this. This study looks at how sustainable halal fashion can strengthen the slow fashion trend and proposes strategic steps for its development. This research employs a qualitative approach to literature study, gathering information from books, articles, and mass media. The results show that sustainable halal fashion contributes to slow fashion and has potential to develop sustainably by increasing public understanding, developing local raw materials, increasing production efficiency, efficiently utilizing supplies and reducing wastage in the manufacturing process., building collaboration. The conclusion is that sustainable halal fashion provides an innovative solution to overcome the fashion industry's negative impact and strengthen the slow fashion trend.

An essential nutrient that regulates growth is phosphorus. Excess phosphorus in the bodies of water causes eutrophication and impairs the quality of water resources. The supply of phosphorus is projected to be depleted in the next century since it is from non-sustainable mineral deposits. Phosphorus is extracted by the weathering of rock naturally and by the process called strip mining. One of the alternatives to sustain the phosphorus resources is to recover the phosphorus in wastewater. The study aimed to remove and recover the phosphate from SSFE wastewater by chemical precipitation. The phosphates from food establishment wastewater were successfully removed and recovered by the precipitation process using magnesium chloride as precipitant, the form of phosphorus recovered is a phosphate compound. Different SSFE wastewaters were gathered from different locations. The average removal efficiency of phosphate from SSFE 1 is 67.11 ± 0.22 % while the efficiency from SSFE 2 is 64.96 ± 0.62 % and from SSFE 3, the removal efficiency of 68.62 ± 0.48 % was obtained. The percent removal efficiencies of the three small-scale food establishment wastewater sources have no significant difference which means that the variations from the three sources of wastewater are not far from each other. The quality of the wastewater in terms of pH, DO, and phosphate content has been improved while the TDS slightly increased. Data obtained indicates that chemical precipitation can remove and recover phosphorus from SSFE wastewater. This study serves as a smart step for many food establishments to begin treating their wastewater with an alternative, inexpensive, and simple method.

Drosophila suzukii poses a significant threat to berry fruits with its uncontrolled spread. Essential oils (EOs) have emerged as potential bioinsecticides due to their natural origin, mode of action, and biodegradability. Although EOs show potential for use in agriculture due to ecotoxicologically favourable characteristics, additional research is required to enhance their effectiveness, stability, and application for practical implementation in pest management. The primary objective of this research was the development of a bioinsecticide formulation based on a combination of three EOs - Pelargonium graveolens, Anethum graveolens, and Pinus sylvestris followed by the assessment of formulated bioinsecticide physicochemical properties. Using a two-choice bioassay, this study aimed to evaluate the effects of formulated bioinsecticides on D. suzukii, regarding their insecticidal properties through oviposition deterrence. The developed formulation exhibited favourable physicochemical properties and demonstrated a decrease in the number of larvae in fruits. Bioinsecticides present an environmentally friendly approach to pest control. However, further research and development are imperative to fully exploit their potential for effective crop protection in the field, followed by comprehensive research to evaluate the potential side effects on natural enemies, ensuring that their implementation doesn't harm beneficial organisms and maintain ecological equilibrium.

Abstract Pfaffia glomerata (Spreng.) Pedersen has among its main bioactive compounds saponins, with the phytoestroid β-ecdysone as its chemical marker. In this study, pressurized liquid extraction (PLE), a green extraction technique used to obtain bioactive compounds from plants, was employed to extract beta-ecdysone from P. glomerata leaves, stems, and roots. The 22 factorial design was used with the variables temperature (333 K and 353 K) and flow rate (1.5 and 2 mL min−1), pressure (300 Bar), time (60 min), and solvent [ethanol and distilled water (70:30 (v/v)] were kept constant for all parts of the plant. The results of experimental responses demonstrated that the factors temperature and flow rate significantly interfere with the yields of leaf (0.499%), root (0.65%) and stem (0.764%) extracts. The latter presented presents the highest yield compared to the other parts of the plant. HPLC results showed the presence of beta-ecdysone in all parts of the plant with concentrations of β-ecdysone 86.82, 76.53 and 195.86 mg L−1 to leaf, root and stem, respectively. FT Raman results exhibited typical peaks of beta-ecdysone, such as 3310 cm−1, 1654 cm−1, and 1073 cm−1 for all plant parts. Another interesting result was the presence of the peak at 1460 cm−1 in the PLE root extract can be associated with selenium. This foundational knowledge confirms that the PLE extraction process was efficient in obtaining the chemical marker of Pfaffia glomerata in all plant parts.

Microfranchises (MFs), as an innovative organizational model, aim to enhance the productive capacity of the base of the pyramid (BoP) population in diverse contexts. We provide original insights into the underexplored role of MFs in the socioeconomic inclusion of victims of the conflict and former combatants in conflict settings while advancing theory-building in overlooked areas. To bridge these gaps, we use grounded theory in exploratory analysis of the total population sampling of 17 Colombian social enterprises/seven MFs financed by the United Nations Development Program and Inter-American Development Bank. Our results suggest that MFs were the most adopted organizational model in post-conflict Colombia, promoting the inclusion of victims and ex-combatants who collaboratively create contextualized solutions and prioritize community well-being, which has led to the development of a new iteration of the BoP model – BoP 4.0 - closely aligned with MFs, an innovative sustainable business typology developed. Its focus on Colombian social enterprises in post-conflict settings delimited this research. Thus, generalizing these findings beyond this context should be approached with caution. This study marks a significant contribution by revealing the pivotal role of MFs in promoting socioeconomic inclusion for victims in conflict-affected regions. Furthermore, it introduces the innovative concept of BoP 4.0, representing an evolution in sustainable business typology within the BoP framework. [ABSTRACT FROM AUTHOR]

Sustainable carbon dots based on cellulose, particularly carboxymethyl cellulose carbon dots (CMCCDs), were confined in an inorganic network resulting in CMCCDs@SiO2. This resulted in a material exhibiting long afterglow covering a time frame of several seconds also under air. Temperature‐dependent emission spectra gave information on thermally activated delayed fluorescence (TADF) and room temperature phosphorescence (RTP) while photocurrent experiments provided a deeper understanding of charge availability in the dark period, and therefore, its availability on the photocatalyst surface. The photo‐ATRP initiator, ethyl α‐bromophenylacetate (EBPA), quenched the emission from the millisecond to the nanosecond time frame indicating participation of the triplet state in photoinduced electron transfer (PET). Both free radical and controlled radical polymerization based on photo‐ATRP protocol worked successfully. Metal‐free photo‐ATRP resulted in chain extendable macroinitiators based on a reductive mechanism with either MMA or in combination with styrene. Addition of 9 ppm Cu2+ resulted in Mw/Mn of 1.4 while an increase to 72 ppm improved uniformity of the polymers; that is Mw/Mn=1.03. Complementary experiments with kerria laca carbon dots confined materials, namely KCDs@SiO2, provided similar results. Deposition of Cu2+ (9 ppm) on the photocatalyst surface explains better uniformity of the polymers formed in the ATRP protocol. [ABSTRACT FROM AUTHOR]

The Food and Drug Administration (FDA) authorized the administration of ritonavir (RIT)-boosted nirmatrelvir (NMV) on May 25, 2023, for the treatment of mild to moderate COVID-19 in patients who are at high risk of developing severe COVID-19. In accordance with sustainability and environmental friendliness, simple, eco-friendly, and sustainable spectrophotometric methods were established for concurrently estimating RIT and NMV in newly launched copackaged pills. The suggested solutions for resolving the spectral overlap between RIT and NMV involve the following mathematical methods: the first derivative method (1D), second derivative method (2D), and dual-wavelength zero-order method (DWZ). When ethanol was used as a green dilution solvent, the linearity range was adjusted (10–250 µg/mL) for both drugs. The procedures resulted in a high correlation coefficient (not less than 0.9996) and satisfactory levels of detection and quantification. Additionally, method validation was performed in accordance with International Council for Harmonization norms. Moreover, a detailed ecological and sustainability evaluation protocol was established to confirm the greenness and whiteness of the methods. Finally, the proposed method, along with previously reported methods for analysing NMV and RIT, were reviewed analytically and ecologically. [ABSTRACT FROM AUTHOR]

Adhesives play a crucial role in modern everyday applications, prompting a growing environmental consciousness regarding their source, composition, utilization, and disposal. Sustainability concerns are frequently generated due to the complex or energy‐intensive manufacturing processes in the production of conventional water‐based adhesives. Here, a coacervate‐based snail‐inspired solvent‐free adhesive (SFA) is engineered by strategically modulating electrostatic interactions and molecular entanglement of two polypeptides under environmentally friendly conditions. The SFA has a record‐breaking adhesion strength of 28 MPa on ceramics, setting a new standard for bio‐based adhesives. The SFA demonstrates robust adhesion performance across a wide temperature ranging from −150 to 300 °C and allows for reusability without compromising adhesion properties. Moreover, it can be easily removed using a non‐toxic alkaline solution. The study presents a promising opportunity for developing high‐performance, reusable adhesives made from renewable materials suitable for industrial applications, relics repair, and even spacecraft processing. [ABSTRACT FROM AUTHOR]