Microwave-assisted upcycling of plastic waste to high-performance carbon anode for lithium-ion batteries

The increasing demand for high-performance lithium-ion batteries (LIBs) has emphasized the need for affordable and sustainable materials, prompting the exploration of waste upcycling to address global sustainability challenges. In this study, we efficiently converted polypropylene (PP) plastic waste from used centrifuge tubes into activated polypropylene carbon (APC) using microwave-assisted pyrolysis. The synthesis of APC was optimized using response surface methodology/central composite design (RSM/CCD). Based on the RSM results, the optimal conditions for PP plastic conversion into carbon were determined as follows: HNO3 concentration of 3.5 M, microwave temperature of 230 °C, and holding time of 25 min. Under these conditions, the obtained intensity ratio of Id/Ig in PP carbon was 0.681 ± 0.013, with an error of 6.81 ± 0.013 % between predicted and actual values. The physicochemical studies, including FESEM-EDX, XRD, and Raman spectroscopy, confirmed the successful synthesis of APC samples. The APC 800 material exhibited a well-organized three-dimensional structure characterized by large pores and mesopores, enabling fast ion transport in the electrode. As a result, the APC 800 electrode demonstrated an initial discharge capacity of 381.0 mAh/g, an improved initial coulombic efficiency of 85.1%, and excellent cycling stability after 100 cycles. Notably, the APC 800 electrode displayed remarkable rate performance, showing a reversible capacity of 355.1 mAh/g when the current density was reset to 0.2 A/g, highlighting its high electrochemical reversibility. The outstanding characteristics of APC 800 as an anode electrode material for high-performance lithium-ion batteries suggest a promising future for its application in the field

Geopolitical risk, financial development, and renewable energy consumption: empirical evidence from selected industrial economies

The rapid rise in climate and ecological challenges have allowed policymakers to introduce stringent environmental policies. In addition, financial limitations may pose challenges for countries looking to green energy investments as energy transition is associated with geopolitical risks that could create uncertainty and dissuade green energy investments. The current study uses PTR and PSTR as econometric strategy to investigate how geopolitical risks and financial development indicators influence energy transition in selected industrial economies. Our findings indicate a non-linear DCPB-RE relationship with a threshold equal to 39.361 in PTR model and 35.605 and 122.35 in PSTR model. Additionally, when the threshold was estimated above, financial development indicators and geopolitical risk positively impacts renewable energy. This confirms that these economies operate within a geopolitical context, with the objective of investing more in clean energy. We report novel policy suggestion to encourage policymakers promoting energy transition and advance the sustainable financing development and ecological sustainability

Predicting conservation priority areas in Borneo for the critically endangered helmeted hornbill (Rhinoplax vigil)

The critically endangered helmeted hornbill (Rhinoplax vigil) is under threat around its Southeast Asian range due to hunting and habitat loss. Dependant on primary rainforest habitats, the species is thought to be highly sensitive to habitat disturbance. Compounding this is the threat of climate change where equatorial ecosystems, such as those found on Borneo, are predicted to increase in temperature and precipitation. It is therefore important to identify whether the species’ suitable habitats, both now and in the future, are protected from further anthropogenic disturbance. In this study we used species distribution models to assess the extent of suitable habitat for R. vigil across Borneo, an island which has undergone rapid deforestation in recent years, and a stronghold for the species. Using 302 R. vigil occurrence records, four environmental and three land-use cover variables, we modelled R. vigil current habitat suitability, and two future projections under climate change scenarios RCP 4.5 and RCP 8.5 for 2041–2060. Our results suggest that a quarter of Borneo's landmass is currently suitable for R. vigil. However, there is a steep decline in the predicted suitable habitat from 335,963 km2 (current scenario) to 73,170 km2 (future RCP 4.5), to 54,839 km2 (future RCP 8.5). Our model predicts that the amount of suitable habitat protected by current protected areas (PAs) and the planned Heart of Borneo (HoB) initiative will increase under future climate change, with the HoB protecting > 65 % of R. vigil suitable habitat across all projections. This is likely worsened by future land-use change not included in these models, which is a limitation to our study. We therefore encourage the connectivity of lowland PAs, and the continuation of HoB targets to prevent further decline of R. vigil habitat around Borneo. This study provides the first species-specific spatial assessment of the critically endangered helmeted hornbill distribution in response to climate change across current and planned protected regions in Borneo

Self-reported side effects of COVID-19 vaccines among the public

Background: The safety, side effects and efficacy profile of COVID-19 vaccines remain subjects of ongoing concern among the public in Malaysia. The aim of this study was to determine the types of adverse effects following immunisation with COVID-19 vaccines and the differences based on various types of COVID-19 vaccines to raise public awareness and reduce vaccine hesitancy among the public. Methods: A total of 901 Malaysian adults (≥18 years) who received various COVID-19 vaccines were selected to participate in our cross-sectional study through an online survey between December 2021 and January 2022. Results: A total of 814 (90.3%) of the participants reported ≥1 side effect following COVID-19 immunisation. Of these, the predominant symptoms were swelling at the injection site (n = 752, 83.5%), headache (n = 638, 70.8%), pain or soreness at the injection site (n = 628, 69.7%), fatigue or tiredness (n = 544, 60.4%), muscle weakness (n = 529, 58.7%) and diarrhea (n = 451, 50.1%). Recipients of the Pfizer-BioNTech (Comirnaty ®) vaccine reported the highest number of adverse effects (n = 355, 43.6%), followed by mixed COVID-19 vaccines (n = 254, 31.2%), the Oxford-AstraZeneca (ChAdOx1-®[recombinant]) vaccine (n = 113, 13.9%) and the Sinovac (CoronaVac®) vaccine (n = 90, 11.1%). The study showed that individuals who reported significantly more side effects were of elderly age, female gender and high educational level [P value < 0.05]. Mixed COVID-19 vaccine recipients also reported significantly more local and systemic symptoms after the first dose and third dose when compared with other single vaccine recipients. Conclusion: This study demonstrated the types of self-reported adverse effects following immunisation with single and mixed COVID-19 vaccines. These findings may provide the side effects of different COVID-19 vaccines with the hope of educating the public on the safety profiles of these vaccines and reducing vaccine hesitancy among the public

Edible beetles (Coleoptera) as human food – a comprehensive review

The consumption of edible Coleoptera, or beetles, is examined in this review as a viable remedy for the rising world food demand brought on by the population’s predicted expansion to over 9 billion by 2050. The review illustrates the nutritional profile of beetles, highlighting their high protein content, good fats, and oils, while being low in saturated fats and high in omega-3. Beetles have a rich history of consumption, with over 2 billion people, particularly in regions like Africa, Asia, and the Americas, incorporating them into their diets. They contribute significantly to human nutrition while also playing essential ecological roles, including soil fertilization and pollination. Beetles represent a promising solution to combat climate change, as traditional livestock production is a major greenhouse gas emitter, and beetle farming boasts lower emissions, reduced resource requirements, shorter life cycles, and superior feed conversion rates. Notwithstanding their advantages in terms of nutrition and the environment, there are obstacles including customer adoption, safety worries, and legal limitations. The review also covers how beetles are processed into different food items, such as liquids, pastes, and powders, and how these products are used in the feed, food, and nutraceutical industries. In general, edible beetles present a viable substitute food source with noteworthy nutritional and ecological benefits; yet, additional investigation and endeavors are required to surmount obstacles to their extensive integration

Sustainable leadership in Asean

MALAYSIA will be the Asean chair for 2025 and has selected the theme of “Inclusivity and Sustainability”. Our country also stands to emerge as a leader in carbon credits in Asean. First and foremost, the abundant forest resources bestowed upon Malaysia provide a huge opportunity to develop a robust carbon credit market. However, the immediate financial gains from timber exportation often overshadow carbon credit initiative

Immunoinformatics-driven In silico vaccine design for Nipah virus (NPV): Integrating machine learning and computational epitope prediction

The Nipah virus (NPV) is a highly lethal virus, known for its significant fatality rate. The virus initially originated in Malaysia in 1998 and later led to outbreaks in nearby countries such as Bangladesh, Singapore, and India. Currently, there are no specific vaccines available for this virus. The current work employed the reverse vaccinology method to conduct a comprehensive analysis of the entire proteome of the NPV virus. The aim was to identify and choose the most promising antigenic proteins that could serve as potential candidates for vaccine development. We have also designed B and T cell epitopes-based vaccine candidate using immunoinformatics approach. We have identified a total of 5 novel Cytotoxic T Lymphocytes (CTL), 5 Helper T Lymphocytes (HTL), and 6 linear B-cell potential antigenic epitopes which are novel and can be used for further vaccine development against Nipah virus. Then we performed the physicochemical properties, antigenic, immunogenic and allergenicity prediction of the designed vaccine candidate against NPV. Further, Computational analysis indicated that these epitopes possessed highly antigenic properties and were capable of interacting with immune receptors. The designed vaccine were then docked with the human immune receptors, namely TLR-2 and TLR-4 showed robust interaction with the immune receptor. Molecular dynamics simulations demonstrated robust binding and good dynamics. After numerous dosages at varied intervals, computational immune response modeling showed that the immunogenic construct might elicit a significant immune response. In conclusion, the immunogenic construct shows promise in providing protection against NPV, However, further experimental validation is required before moving to clinical trials

Impact of transportation infrastructure and urbanization on environmental pollution: evidence from novel wavelet quantile correlation approach

In terms of achieving sustainable development goals (SDGs), the developing economies are facing many issues, and one of the key issues is environmental degradation. Being a developing economy, Pakistan is also experiencing thought-provoking impacts of global warming and still far away from the ideal track of sustainable development. For addressing environment-related issue and achieving the targets of SDGs, a policy-level reorientation might be necessary. In this view, this study investigates the impact of economic growth, transport infrastructure, urbanization, financial development, and renewable energy consumption on CO2 emissions by using the data of Pakistan during 1990-2020. For this purpose, we use novel wavelet quantile correlation approach. The empirical results of wavelet quantile correlation approach demonstrate that economic growth, transport infrastructure, urbanization, and financial development are responsible for environmental pollution. Whereas, result also claims that renewable energy consumption is a useful tool for reducing environmental pollution in Pakistan. Moreover, the results of FMOLS approach show that 1% increase in economic growth, transportation infrastructure, urbanization, and financial development increases CO2 emissions by 0.240, 0.010, 0.478, and 0.102%, respectively. However, 1% increase in renewable energy usage reduces CO2 emission by 1.083%. Based on the empirical outcomes, this study proposes comprehensive policy framework for achieving the targets of SDG 7 (clean energy), SDG 8 (economic growth), SDG 11 (sustainable cities and communities), and SDG 13 (climate action)

Game on! A state-of-the-art overview of doing business with gamification

Gamification is the act of applying game-design elements to transform activities, products, services, and systems in a way that provides the kind of experiences similar to those offered by games. These elements include badges, points, and leaderboards to motivate and reward problem solving activities and processes. Both businesses and business researchers are increasingly interested in the application of gamification. In this regard, this review aims to offer a state-of-the-art overview of gamification in business, revealing its current trends and future directions. Using business research on gamification published in the last decade (2012–2022) found on Scopus and Web of Science, we conduct a performance analysis to illuminate the field's performance (publication productivity and impact) alongside its key contributors (journals, authors, and countries) as well as a science mapping using a co-citation analysis to locate knowledge foundations, and bibliographic coupling and keyword co-occurrence analysis to reveal major themes in business gamification. Our exploration has unearthed gamification's pervasive influence across business domains, from enhancing learning and fostering innovation to empowering marketing strategies and catalyzing transformation. Gamification has also made significant inroads into management practices, driving engagement, influencing behavioral outcomes, and ushering sustainability. Peering into the future, our density-centrality quadrant analysis casts light on emerging frontiers. Noteworthily, we expect the next wave of gamification to be shaped by the allure of video games and the metaverse, bespoke industry-specific designs, confluence with e-commerce trends, emphasis on sustainable development, expanded social responsibilities, innovations in virtual reality, intersections with human urbanism, and the rise of smart cities. As gamification continues to integrate and reshape myriad facets of the business world, it holds the promise of not only enriching current practices but also charting the course for the future of innovative, sustainable, and transformative business strategies

Extending the theory of planned behaviour to foreign students’ perceptions of traditional Chinese medical tourism

Medical tourism is becoming an increasingly important component of the international tourism industry, and Chinese medical tourists make up a big percentage of this growing tourism market segment. Most previous studies on Chinese medical tourism have focused on Chinese outbound medical tourism, but there has little research undertaken as yet, on foreign tourists’ perception towards traditional Chinese medical tourism. Specifically, most of the previous studies utilized the measurement scale of destination image in medical tourism research, resulting in a limited representation of the nature of medical tourism. This study aims to examine the relationship between attitude, subjective norm (SN), perceived behavioural control (PBC), familiarity, perceived ease of visa application (PEVA) and intention toward traditional Chinese medical tourism. A quantitative approach was used, adopting a survey methodology involving 344 foreigners which was followed by subsequent empirical testing of the postulated hypotheses. The results suggested that attitude, PBC, familiarity and PEVA positively influence intention. PEVA positively influences attitude, PBC and intention respectively. Results also demonstrated that familiarity influenced attitude and PBC, and SN positively influenced familiarity. This study expands the existing knowledge on how PEVA and familiarity influenced visitation in medical tourism literature which can benefit key stakeholders in the tourism industry