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Impact of protein corona and light modulation on the antibacterial activity of light-activated silver nanoparticles

Journal of materials chemistry. B 2025年 2025 May 29页

作者： Varsha Godakhindi Anjumana Jannati Nur Mariya Munir Juan L Vivero-Escoto Department of Chemistry University of North Carolina at Charlotte Charlotte NC 28223 USA. jviveroe@charlotte.edu. Nanoscale Science Program University of North Carolina at Charlotte Charlotte NC 28223 USA. Department of Civil and Environmental Engineering University of North Carolina at Charlotte Charlotte NC 28223 USA. Infrastructure and Environmental Systems Program University of North Carolina at Charlotte Charlotte NC 28223 USA. Center for Innovation Translational Research and Applications of Nanostructured Systems University of North Carolina at Charlotte Charlotte NC 28223 USA.

Silver nanoparticles (AgNPs) as antimicrobial agents have gained extensive popularity due to their broad-spectrum action. Recently, AgNPs have been combined with photosensitizers (PS) to develop a synergistic antimicrobial effect. This synergy is associated with the light-activated increase in the release of Ag, which drives the antibacterial mechanism against antibiotic-resistant bacteria (ARB). A factor typically not considered in the performance of AgNPs is the environmental conditions, such as salt and protein content, that significantly impact their bactericidal effect. In this work, we used protoporphyrin IX (PpIX) as a PS to synthesize PpIX-AgNPs. We elucidated the critical role of environmental conditions on the colloidal stability of PpIX-AgNPs in different bacterial culture media. We also determined the impact of the culture media on the light-activated release kinetics of Ag. We found that cell media with lower protein and higher salt content drive the colloidal stability and release kinetics of Ag from AgNPs. Furthermore, we have shown that the multiple-irradiation approach of this light-controlled platform maximizes the release of Ag and promotes effective antibacterial action. We successfully tested this multiple-irradiation strategy in methicillin-resistant (MRSA) demonstrating ∼7-log-unit reduction at 1.5 μg mL of PpIX-AgNP. A 6-log-unit MRSA inhibition was achieved in the nutrient broth (NB) media under the same irradiation strategy. We envision that this light-activated PpIX-AgNPs system can overcome major issues with the elimination of ARB and reduce side effects.

关键词： Bactericides

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Design strategies and willingness to pay for circular economy service policies in sustainable tourism

Environmental Challenges

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Environmental Challenges 2025年 18卷

作者： Suhardono, Sapta Phan, Thi Thanh Thuy Lee, Chun-Hung Suryawan, I Wayan Koko Environmental Sciences Study Program Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Surakarta 57126 Indonesia Faculty of Natural Resources & Environment Dong Nai Campus Vietnam National University of Forestry Bien Hoa Dong Nai 810000 Viet Nam Department of Natural Resources and Environmental Studies College of Environmental Studies and Oceanography National Dong Hwa University Taiwan Hualien 97401 Taiwan Department of Environmental Engineering Faculty of Infrastructure Planning Universitas Pertamina Jalan Sinabung II Jakarta Terusan Simprug 12220 Indonesia Center for Environmental Solution (CVISION) Universitas Pertamina Jalan Sinabung II Terusan Simprug Jakarta 12220 Indonesia Center for Interdisciplinary Research on Ecology and Sustainability College of Environmental Studies and Oceanography National Dong Hwa University Taiwan Hualien 97401 Taiwan

The transition towards a circular economy within the tourism industry is increasingly seen as essential to achieving sustainable development goals. This study explores the relationships between various design strategies, tourists' willingness to pay (WTP) for sustainable practices, and their participation in circular economy activities. Using Structural Equation Modeling (SEM) to analyze data collected from 640 tourists in Bali, the research identifies the critical factors that influence tourists' engagement with sustainability. The findings reveal that design strategies focused on longevity, serviceability, reusability, and material recovery significantly enhance WTP for sustainable practices. In turn, WTP is shown to be a key driver of participation in circular economy activities, such as purchasing recycled items and green purchasing behaviors. However, barriers such as cost concerns, lack of awareness, and limited incentives pose significant challenges to widespread adoption. © 2025 The Authors

关键词： Circular economy Design strategies Structural equation modeling Sustainable tourism Willingness to pay

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The Study of Sedimentation at Jongkong Reservoir in District Central of Bangka through Erosion of Catchment Area

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IOP Conference Series: Earth and Environmental Science 2020年第1期537卷

作者： Miskar Maini Mashuri Civil Engineering Study Program Faculty of Infrastructure and Regional Engineering Institut Teknologi Sumatera Indonesia

Jongkong reservoir creates a reservoir of water that is used for the purposes of raw water as fundamental media for improvement of drinking water production especially at dry season for the District of Koba. The advantage of being able to hold water in wet season and releasing it in dry season will be detained if the life storage of the reservoir can be utilized effectively, but sedimentation problem will decrease its volume which can influence the life time of reservoir. Finally the reservoir becomes less effective, so it is very important to study. The method which is used to predict an average erosion rate in the catchment area considers factors of rain erosivity, soil erodibility, ground inclination of slope or slope length, management of crop and land, soil conservation. Calculation was done by using the USLE equation (Universal Soil Loss Equation) which was developed by Wischmeier and Smith (1965, 1978). From this research result, the prediction of surface erosion rate in the basin catchment area in the year 2019 is equal to 53.20 mm/year or equivalent with 62,491.92 m3/year, and the value of Sediment Delivery Ratio (SDR) is equal to 32,28 %. The number of material which eroded is equal to 957.59 Ton/Ha/year so it is classified into the medium erosion class category. The dead storage of 5% of the the volume of the reservoir cage will be fully charged in the year 2022 or for 3 The next year and the total volume of the reservoir Ridge will be full of sediment in the year 2062 or 43 years.

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The influence of Ground Granulated Blast Furnace Slag (GGBFS) as Portland Composite Cement (PCC) substitution in improving compressive strength of concrete

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IOP Conference Series: Materials Science and engineering 2021年第2期1098卷

作者： R Raafidiani S Sumargo R Permana Master of Applied Infrastructure Engineering Study Program Civil Engineering Department Politeknik Negeri Bandung Jl. Gegerkalong Hilir Bandung Indonesia Civil Engineering Department Universitas Jenderal Achmad Yani Jl. Terusan Jenderal Sudirman Cimahi Indonesia

Concrete is a construction material that is extensively used to build various infrastructures. The increasing of basic human facilities and the resulting infrastructures in increasing needs of concrete and cement concrete as the material forming. Many problems in the concrete producing industry are not sustainable. Because of concrete production uses enormous natural resources and the main binding material in concrete is cement. Cement is the result of calcination of lime roomates in the process results in the release of carbon dioxide (CO2). To mitigate this problem and for sustainability concrete, many researches have been done to find a replacement for cement. Geopolymer concrete is an alternative to reduce part of cement. Ground Granulated Blast Furnace Slag (GGBFS) that consist of silica and alumina can be used as a binder to replace part of the Portland Composite Cement (PCC). In this study, concrete compressive strength tests were carried out on 48 specimens of concrete cylinder 15x30 cm. The ratio of substitution GGBFS/PCC used were 0/100, 40/60, 50/50 and 60/40. The specimens were cured at room temperature then tested at the age of 7, 14, 21 and 28 days. The results show that the average compressive strength of concrete at the age of 28 days that GGBFS/PCC ratio of 0/100, 40/60, 50/50 and 60/40 were 26.50, 23.01, 26.65 and 22.56 MPa, respectively. Based on the analysis, 50% substitution of GGBFS can be used to partially replace cement because has the same as normal compressive strength of concrete and can be classified as environmentally friendly or green concrete.

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Biodegradation performance of marine sponge symbiont isolate consortium against polycyclic aromatic hydrocarbon components

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AIP Conference Proceedings 2023年第1期2588卷

作者： Ismail Marzuki Selfina Gala Irham Pratama Erniati Natsar Desi Andi Emelda Rakhmad Armus 1Department of Chemical Engineering Fajar University Makassar PO 90231 South Sulawesi Indonesia 2Department of Civil Engineering Fajar University Makassar PO 90231 South Sulawesi Indonesia 3Departement Master Program in Infrastructure and Environmental Engineering Fajar University Makassar PO 90231 South Sulawesi Indonesia 4Department of Pharmacy Universitas Muslim Indonesia Urip Sumoharjo-Makassar PO 90321 South Sulawesi Indonesia 5Department of Environment Engineering Nusantara Indonesia of College Technology Makassar PO 90234 South Sulawesi Indonesia

Remediation is one method to improve environmental quality. Hydrocarbon components, especially PAHs are toxic and are commonly found in the environment, including in the marine environment in port areas and the activities of the petroleum processing industry. The toxic properties of PAHs can be reduced or even eliminated by destroying the molecular structure. The biodegradation method uses microorganisms as a biodegradator. This study aims to determine the biodegradation performance of a consortium of sponge microsymbiont isolates against PAHs components. The interaction between the suspension of the isolate consortium and the PAHs were tested for 25 days. Biodegradation performance against PAHs was determined using GC-MS and FTIR. The results showed that a consortium of sponge microsymbiont isolates, namely: Sp1.A1, Sp2.B2 and Sp3.B1 could degrade naphthalene, anthracene and pyrene components. The level and performance of the biodegradation of the isolate consortium against naphthalene (23.64 %), anthracene (28.98 %), and pyrene (39.01%). The biodegradation product of the isolate consortium against naphthalene was a carboxylic acid group (Hexadecanoic acid), against anthracene in the form of an aromatic alcohol compound (Phenol) and pyrene, an alcohol group organic compound (Benzenemethanol). The order of biodegradation strength of the isolate consortium against the tested PAHs was: pyrene ˃ anthracene ˃ naphthalene. The degradation of the isolate consortium against the PAHs test material did not show a consistent pattern related to the components of the biodegradation product.

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Gender Mainstreaming in Drought Disaster Risk Reduction

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Journal of Physics: Conference Series 2021年第1期1811卷

作者： Rr M I Retno Susilorini Rusnianti Rambu Lika Sriyana Lintang Jata Angghita Julio Ignatius Sinaga Department of Infrastructure and Environmental Engineering Faculty of Environmental Science and Technology Soegijapranata Catholic University Semarang Master Program of Environmental and Urban Studies Faculty of Environmental Science and Technology Soegijapranata Catholic University Semarang Department of Civil Engineering Faculty of Engineering Diponegoro University Semarang

Climate change has affected the whole world and caused disasters, include drought. Since Tana Mbanas village in Central Sumba District is the driest remote area in eastern region of Indonesia, gender inequality has affected in daily life of people in the village instead of other social and environmental problems. This research aimed to evaluate how gender mainstreaming implemented in drought disaster risk reduction in Tana Mbanas village in Central Sumba Regency, East Nusa Tenggara Province. The result of the research is expected to become a mirror that reflects Sumba island gender and development issues. The research took place in Tana Mbanas village in Central Sumba Regency, East Nusa Tenggara Province, and conducted by qualitative method with purposive data sampling. The steps taken in the research were observation, data collecting by questionnaire and in-depth interview to respondents, and literature review. It was reported that Tana Mbanas village people has given water management assistance by village fund, conducting water management counselling, saving water, and harvesting rain systems in every household. This research meets conclusions that: (1) Several programs and planned actions in water supply system and infrastructure development have become initiatives of government agencies of village authorities, BPBD and Public Work Agency of Central Sumba Regency; (2) People demonstrated vulnerability to drought as well as lack of water supply and also water resources; (3) Strong efforts should be conducted to educate people and increase women capacity in coping issues of poverty, drought, and lack of water supply; and (4) Government agencies and other private institutions have to build women capacity as their participation in enhancing gender equality and mainstreaming gender.

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Corrigendum to "High calcium fly ash geopolymer stabilized lateritic soil and granulated blast furnace slag blends as a pavement base material" [J. Hazard. Mater. 341 (2018) 257-267]

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Journal of hazardous materials 2021年 412卷 125205页

作者： Itthikorn Phummiphan Suksun Horpibulsuk Runglawan Rachan Arul Arulrajah Shui-Long Shen Prinya Chindaprasirt Graduate Program in Construction and Infrastructure Management Suranaree University of Technology Nakhon Ratchasima 30000 Thailand. School of Civil Engineering and Center of Excellence in Innovation for Sustainable Infrastructure Development Suranaree University of Technology Nakhon Ratchasima 30000 Thailand. Department of Civil Engineering Mahanakorn University of Technology Bangkok 10530 Thailand. Department of Civil and Construction Engineering Swinburne University of Technology Melbourne Australia. College of Engineering Shantou University Guangdong 515063 China. Sustainable Infrastructure Research and Development Center Department of Civil Engineering Khon Kaen University Khon Kaen 40002 Thailand.

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Influence of bioadmixture dosage on mechanical and self-healing properties of cement paste containing incinerated sugarcane press mud

Cleaner Engineering and Technology

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Cleaner engineering and Technology 2025年 27卷

作者： Zerlinda Mara Ditta Peerawat Laohana Nantawat Tanapongpisit Wittawat Saenrang Sophon Boonlue Darunee Kaewpikul Vanchai Sata Prinya Chindaprasirt Jindarat Ekprasert Bioscience and Bioinnovation for Sustainability Program Department of Integrated Science Faculty of Science Khon Kaen University Khon Kaen 40002 Thailand School of Physics Institute of Science Suranaree University of Technology Nakhon Ratchasima 30000 Thailand Center of Excellence in Advanced Functional Materials School of Physics Suranaree University of Technology Nakhon Ratchasima 30000 Thailand Department of Microbiology Faculty of Science Khon Kaen University Khon Kaen 40002 Thailand Sustainable Infrastructure Research and Development Center Department of Civil Engineering Faculty of Engineering Khon Kaen University Khon Kaen 40002 Thailand Academy of Science Royal Society of Thailand Dusit Bangkok Thailand

The cement industry is one of the major sources of greenhouse gas. Replacing cement with alternative materials such as incinerated sugarcane press mud (IWFC) is promising for reducing CO 2 emissions, but the quality of materials is diminished. This research then aims to investigate the influence of bioadmixture, calcifying bacteria Lysinibacillus sp. WH, at three bacterial dosage concentrations (10 8 , 10 9 , and 10 10 CFU/mL) on microstructural development and mechanical enhancement of Portland cement paste and cement pastes containing varied ratios of IWFC. The results show that the bacterial concentration of 10 10 CFU/mL effectively enhances mechanical characteristics of IWFC-cement pastes, while lower concentration is more favorable to Portland cement paste (P). Here, we are the first to provide evidence that the properties of cement paste composites comparable to Portland cement paste can be achieved even when the IWFC is replaced with cement as high as 20 % by weight together with the incorporation of calcifying bacteria. Moreover, IWFC-cement pastes with high bacterial concentration of 10 10 CFU/mL exhibit the fastest self-healing ability within two weeks. The regained strength after healing is >85 % in all composite specimens. Overall, this work provides an effective method to develop durable and eco-friendly cement.

关键词： Biocement Sugar industry waste CaCO 3 -Precipitating bacteria Self-healing ability Calcium carbonate

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Enhancing community engagement with digital twins: Technological adoption in marine debris management

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Journal of Urban Management 2025年

作者： Suhardono, Sapta Fitria, Laili Prayogo, Wisnu Lee, Chun-Hung Suryawan, I Wayan Koko Environmental Sciences Study Program Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Surakarta 57126 Indonesia Department of Environmental Engineering Universitas Tanjungpura Pontianak 78124 Indonesia Department of Building Engineering Education Universitas Negeri Medan Medan Indonesia Department of Natural Resources and Environmental Studies College of Environmental Studies and Oceanography National Dong Hwa University Hualien 97401 Taiwan Department of Environmental Engineering Faculty of Infrastructure Planning Universitas Pertamina Jalan Sinabung II Terusan Simprug Jakarta 12220 Indonesia Center for Environmental Solution (CVISION) Universitas Pertamina Jalan Sinabung II Terusan Simprug Jakarta 12220 Indonesia Center for Interdisciplinary Research on Ecology and Sustainability College of Environmental Studies and Oceanography National Dong Hwa University Hualien 97401 Taiwan

This research investigates the adoption of digital twin technology for marine debris management in Bali, focusing on the regions of Denpasar, Badung, Gianyar, and Tabanan. Digital twin technology involves creating virtual models that replicate physical environments and processes, enabling real-time monitoring and simulation. This capability is particularly crucial in Bali, where marine debris presents significant ecological and economic challenges. Digital twin technology offers a strategic advantage by allowing detailed scenario analysis and optimization of management strategies. Using Structural Equation Modeling (SEM), the study evaluates the influence of four key factors within a community resilience framework on the willingness to adopt digital twins: risk perception, planning capability, coping ability, and interest level. The findings suggest that heightened awareness through targeted workshops and campaigns significantly boosts the community's willingness to engage with digital twin technology, highlighting the impact of risk perception. In terms of planning capability, strong processes such as the creation of action plans and task forces are crucial for integrating digital twins into marine debris management strategies. Additionally, robust coping mechanisms, which benefit from access to advanced technologies for real-time response, correlate with a greater readiness to adopt digital twins. Lastly, active community involvement in environmental initiatives indicates a higher propensity to support innovative technological solutions, underscoring the importance of interest level. The study emphasizes the critical role of these factors in creating an environment conducive to the adoption of digital twin technology in Bali. By enhancing these aspects of the community resilience framework, the region can more effectively leverage digital twins to address its marine debris problem. This research offers valuable insights for policymakers, practitioners, and researc

关键词： Community engagement Digital twin technology Marine debris management Structural equation modeling

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Reflections and Thoughts on the Future of Science From AGU Hydrology Section Fellows

Perspectives of Earth and Space Scientists

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Perspectives of Earth and Space Scientists 2023年第1期4卷

作者： Scott W. Tyler Jennifer Kent Suzanne P. Anderson Paul D. Brooks Aaron I. Packman Remko Uijlenhoet Andrew W. Western Xubin Zeng Department of Geological Science and Engineering University of Nevada Reno Reno NV USA S. W. Tyler College of Science University of Nevada Reno Reno NV USA Department of Geological Sciences University of Colorado Boulder Boulder CO USA Department of Geology and Geophysics Interdisciplinary Program in Hydrology and Water Resources University of Utah Salt Lake City UT USA Department of Civil and Environmental Engineering Northwestern University Evanston IL USA Faculty of Civil Engineering and Geosciences Delft University of Technology Delft The Netherlands Department of Infrastructure Engineering University of Melbourne Melbourne VIC Australia Department of Hydrology and Atmospheric Sciences University of Arizona Tucson AZ USA

At the inaugural Frontiers in Hydrology Meeting in San Juan, Puerto Rico in the summer of 2022, the Hydrology Section organized a poster session and invited our 2020 and 2021 Classes of AGU Fellows, with the initial goal of both celebrating their careers as well as to provide an opportunity for an informal exchange and connection between the section's early career members and our more senior and established scientists and engineers. Due to the challenges of time zones, virtual poster presentations and other logistics, the formal poster session was adjourned but continued as a hybrid “meet-up” with six of our Section's Fellows (Suzanne Anderson, Paul Brooks, Aaron Packman, Remko Uijlenhoet, Andrew Western, and Xubin Zeng) from around the world. As you will see, what started as an informal chat quickly took deep dives into pressing issues in our section and science in general, including thoughts on how our community values (or in some cases doesn't value) multi- and interdisciplinary accomplishments, critiques of our system of rewards and awards including how we assess publication impacts and finally, a frank and honest discussion of our current efforts to diversify our community and where/why are we still failing. We hope that by sharing this open and impromptu dialogue that these discussions can expand to our entire community, and to encourage future Fellows exchanges such as this to reach our entire community of scientists and engineers. How we value our scientific contributions and impacts needs to expand beyond the traditional metrics of counting publications, grants, etc., that we have used in the past While interdisciplinary science, broad scientific thinking and societally relevant science are often stated as important to success in hydrology, these contributions are less recognized in the awards processes than individual accomplishments or narrowly focused scientific contributions How we do our science and how we evaluate it have significantly evolved over th

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