检索结果-内蒙古大学图书馆

Toxic Trace Elements Bound to Size-Fractioned Ambient Particles Down to Nanoparticles (Pm0.1): Characteristics, Sources and Health Risk Assessment

学校读者我要写书评

暂无评论

SSRN 2024年

作者： Jamhari, Anas Ahmad Rajab, Nor Fadilah Latif, Mohd Talib Wahab, Muhammad Ikram Abdul Othman, Murnira Mohd Nadzir, Mohd Shahrul Tekasakul, Perapong Hata, Mitsuhiko Furuchi, Masami School of biomedicine Faculty of Health Sciences Universiti Sultan Zainal Abidin Gong Badak Campus Terengganu Kuala Nerus21300 Malaysia Department of Earth Sciences and Environment Faculty of Science and Technology Universiti Kebangsaan Malaysia Selangor Bangi43600 Malaysia Environmental Health and Industry Safety Program Center for Toxicology and Health Risk Studies Faculty of Health Sciences Universiti Kebangsaan Malaysia Kuala Lumpur50300 Malaysia Universiti Kebangsaan Malaysia Selangor Bangi43600 Malaysia Faculty of Environmental Management Prince of Songkla University Songkhla Hat Yai90112 Thailand Graduate School of Natural Science and Technology Kanazawa University Ishikawa Kanazawa920-1192 Japan Faculty of Health Sciences Universiti Kebangsaan Malaysia Kuala Lumpur Malaysia

This study aimed to characterize the ambient nanoparticles, or PM0.1 and trace elements concentration, temporal and size distributions, potential sources, respiratory deposition and health risk assessment in an urban area of Kuala Lumpur, Malaysia, from February 2017 until 27 November 2017. The 120-h aerosol samples were collected using a Nanosampler and quantified via Inductively Couple Plasma Mass Spectrometry. The obtained findings demonstrated trace elements in aerosol dominated by Al, Fe and Mg represented 36.1%, 20.1% and 37.2% and followed by Cr and Zn with 1.6% and 2.1% from total trace elements concentration, respectively. Trace elements concentration accumulated in fine particles in order of PM1.0-2.5 > PM2.5-10 > PM0.1-0.5 > PM0.5-1.0 > PM PM>10 and varied in the order of Intermonsoon1 > Southwest > Northeast > Intermonsoon2. Enrichment factors revealed high anthropogenic Bi, Ag and Cd sources in size-fractionated particles. Principal component analysis (PCA) determined that the trace element contributions may have originated mainly from both natural and anthropogenic sources, i.e. vehicle emissions, industries and crustal elements. The largest deposition variability (78.9%) was usually observed in the respiratory system's upper airways, with the biggest contributions (38.9%) accumulated mostly in larger particles (PM2.5-10). In contrast, the greatest deposition of finer or ultrafine particles (22.1%-28.8%) in the deepest respiratory tract (alveolar). Cr and Zn deposited in all regions of the human respiratory system, providing a considerable risk to human health. Hazard index and hazard quotient value suggest that children may face greater health risks from exposure to trace elements from environmental particles than adults in all pathways. Conversely, the incremental lifetime cancer risks (ILCR) exhibited risk of adults was higher than the children group. Nevertheless, non-carcinogenic and carcinogenic health risk showed that the values for adult and ch

关键词： Aerosols

Technological Legitimacy, Discourses, and the Role of Policy Entrepreneurs in Wind Energy Transition

学校读者我要写书评

暂无评论

SSRN 2024年

作者： Pulice, Sérgio M.P. Peyerl, D. Branco, E.A. Demange, L.H.M.L. Martinez, L.P. Marchezini, V. INPE - National Institute for Space Research Av. dos Astronautas 1.758 - Jardim da Granja São José dos Campos – SP12227-010 Brazil Amsterdam Netherlands Technical Advisor in the Control and Environmental Licensing Board of Cetesb - São Paulo Environmental Agency Brazil UNIFESP - Federal University of São Paulo Science and Technology Centre São José dos Campos Brazil CEMADEN National Center for Monitoring and Early Warning of Natural Disasters São Jose dos Campos Brazil Graduate Program on Earth System Science National Institute for Space Research São José dos Campos Brazil

Legitimacy plays a decisive role in shaping the acceptance of technology in a sociotechnical regime, and it results from the interplay between discourses and policy actors. This study examines the discourses and roles of key actors in legitimizing wind energy expansion in Brazil from 2015 to 2022. By analyzing 979 newspaper articles using Content Analysis, Discourse Network Analysis and Advocacy Coalition Framework, we identified influential coalitions, central policy actors, and legitimizing discourses. The findings reveal the fit-and-conform and stretch-and-transform discursive strategies, with more stable economic beliefs overlapping sustainable beliefs. A turning point occurred in 2020, likely heralding a new market opportunity for green hydrogen, sparking a further investigation. We also identified the centrality of policy-entrepreneurship and discussed these results with a theoretical perspective about discursive stability and non-state actors' role in sustainability transition, highlighting the problem of dominance on economic beliefs, where short-term success may not guarantee long-term sustainability changes. © 2024, The Authors. All rights reserved.

关键词： Wind power

Design, development and characterization of polyelectrolyte multilayer membranes for potential filtration applications

学校读者我要写书评

暂无评论

Materials Today: Proceedings 2021年 41卷 530-534页

作者： P. Nikhil Chandra K. Usha Mothi Krishna Mohan Post Graduate and Research Department of Chemistry Sree Narayana College Kollam 691001 India School of Environmental Studies Cochin University of Science and Technology Kochi Kerala 682022 India Kerala Department of Sciences and Humanities Christ University Faculty of Engineering Bangalore Karnataka 560074 India

The present work projects to modify the surface of commercially available microfiltration membranes using polyelectrolyte multilayer assembly. This polyelectrolytic modification changes the nature and properties of the membrane such as porosity, absorption capacity, charge etc. which can be used for potential environmental application such as herbicide removal from water. Chitosan (CHI) and polystyrene sulfonate (PSS) were incorporated into nanostructured polymeric films on polyamide membrane using layer-by-layer (LbL) technique. The developed polyelectrolyte multilayer assembly were characterized by using UV–vis spectroscopy, attenuated total reflectance fourier transform infrared (ATR-FTIR) spectroscopy, thermo gravimetric analysis (TGA) and atomic force microscopy (AFM).

关键词： LbL method Polymeric membranes Water purification Polystyrene sulphonate Polyelectrolyte Chitosan

The Implementation of Credit program to Delay Cutting down Trees 4

学校读者我要写书评

暂无评论

The Implementation of Credit Program to Delay Cutting down T...

4th International Conference on Energy, Environment, Epidemiology and Information System, ICENIS 2019

作者： Ningrum Ika, Satryani Kartika Muhamad, Fuad Master Program of Environmental Science Post Graduate Studies Diponegoro University Semarang Indonesia Departement of Biology Faculty of Science Mathemathics Diponegoro University Semarang Indonesia

Farmers have difficulty in developing community forest and their derivative products because they are constrained by funds. So, The Ministry of Environment and Forestry issued a credit program to delay cutting down trees. Loans use trees as collateral for credit. The experimental site is in Kawengen Village Ungaran East Ungaran, Semarang Regency Central Java Province (7° 1021 N 110° 4814 W) at 216 m above sea level. Data is obtained from Lestari farmer grup. Lestari farmer group is a farmer organization that participates in the delayed cutting down trees credit *** purpose of the study was to find out the implications of implementing credit program to delay cutting down trees for sustainable community forest management. The study indicated that delayed cutting loan is beneficial for farmers and forest suistainability. The result is the delay in cutting trees useful for providing longer opportunities of tree life, thus trees can be functioned ecologically and economically longer. On the other hand, if it fails to pay, there will be fragmentation of community forest land. The ecological and economic functions of trees will also be lost. © The Authors, published by EDP sciences, 2019.

关键词： Forestry

Carbon dioxide, global boiling, and climate carnage, from generation to assimilation, photocatalytic conversion to renewable fuels, and mechanism

学校读者我要写书评

暂无评论

science of the Total Environment 2025年 965卷 178629页

作者： Khan, Muhammad Sun, Xiaohui Zada, Amir Azizi, Shohreh Shah, Muhammad Ishaq Ali Khan, Javed Ali Ragab, Ahmed H. Taher, Mostafa A. Abbas, Qumber Han, Changseok College of Civil and Transportation Engineering Shenzhen University 3688 Nanhai Avenue Guangdong Province Shenzhen518060 China Department of Chemistry Abdul Wali Khan University Mardan Mardan23200 Pakistan UNESCO-UNISA Africa Chair in Nanosciences and Nanotechnology College of Graduate Studies University of South Africa Muckleneuk Ridge PO Box 392 Pretoria0002 South Africa Chemistry Department Faculty of Science King Khalid University P.O. Box 9004 Abha61413 Saudi Arabia Biology Department Faculty of Science and Arts King Khalid University Mohail Assir 61321 Saudi Arabia Department of Technologies and Installations for Waste Management Faculty of Energy and Environmental Engineering Silesian University of Technology Gliwice44-100 Poland Program in Environmental and Polymer Engineering of INHA University 100 Inha-ro Michuhol-gu Incheon22212 Korea Republic of Department of Environmental Engineering INHA University 100 Inha-ro Michuhol-gu Incheon22212 Korea Republic of

The increasing CO2 concentration in the atmosphere has substantial impacts on the global temperature. For energy sustainability and minimization of the effects of global warming, an approach to understand CO2 capturing and a carbon neutral culture is extremely essential in the present circumstances. The CO2 emission from vehicles and industries can be minimized using energy cost-effective techniques and can be converted more selectively into reusable fuels via thermochemical, electrochemical, photochemical, photocatalytic, electrocatalytic, biological and inorganic carbonate-based approaches. In this review article, we have discussed the effects of increased global temperature on human beings, economy and climate change. Further, we have discussed the photocatalytic conversion of CO2 (PC-CO2) into gaseous and liquid fuels under solar light driven photocatalysis. The adsorption and activation of CO2, its conversion into various intermediates, their stability and selectivity of the final products have been elaborated comprehensively. The conversion mechanisms of CO2 into CO, CH4, alcohol, aldehyde and carboxylic acid have been discussed in detail. The role of defects and exposed facets of photocatalysts, effect of metal and non-metal dopants, and the additive role of co-catalyst on the mechanisms and selectivity of the conversion products have been discussed comprehensively. Finally, future perspective is discussed to highlight the research gap in the PC-CO2. We hope that this article will help to understand the mechanisms of PC-CO2 and will direct researchers to add their role in the reduction of CO2 to control global warming and make life easier on earth in the coming years. © 2025 Elsevier B.V.

关键词： Kyoto Protocol

Cyclodextrin-Modified Layered Double Hydroxide Thin-Film Nanocomposite Desalination Membrane for Boron Removal

学校读者我要写书评

暂无评论

SSRN 2023年

作者： Ee, Liang Ying Zhao, Qipeng Gao, Jie Lim, Chit Kai Xue, Kai Chin, Sze Yuet Li, Sam Fong Yau Chung, Tai-Shung Chen, Shing Bor Department of Chemical and Biomolecular Engineering College of Design and Engineering National University of Singapore 4 Engineering Drive 4 Singapore117585 Singapore Department of Chemistry College of Humanities and Sciences National University of Singapore 3 Science Drive 3 Singapore117543 Singapore Chemical Engineering Program Physical Science and Engineering Division King Abdullah University of Science and Technology Thuwal23955-6900 Saudi Arabia Centre of High Field NMR Spectroscopy and Imaging School of Physical and Mathematical Sciences College of Science Nanyang Technological University 21 Nanyang Link Singapore637371 Singapore NUS Environmental Research Institute National University of Singapore T-Lab Building 5A Engineering Drive 1 Singapore117411 Singapore Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei106335 Taiwan

The elimination of small and potentially toxic boron species in water is always a significant challenge for conventional membrane technologies. In this study, facile intercalation and functionalization of β-cyclodextrin (CD) onto layered double hydroxides (LDHs) have resulted in the formation of accessible hydroxyl functional groups and anions that exhibit strong sorption with boron. Through meticulous molecular design and optimization, the modified LDH possessing the maximum boron adsorption capacity of 96.1 mg g-1 was employed to fabricate a polyamide-based thin-film nanocomposite (TFN) membrane with a loading of 0.10 wt.%. This resultant membrane displayed a high salt rejection and water permeance of 99.4 % and 2.68 LMH bar-1 for brackish water, respectively, which can be attributed to the increased interlayer spacing of 1.67 nm and the thinner selective layer. The innovative TFN membrane also achieved a high boron rejection of 82.3 % against brackish water containing 2,000 mg L-1 NaCl and 15 mg L-1 B at pH 8. This pioneering study provides valuable insights into the design of brackish water reverse osmosis (BWRO) membranes, through the synergistic use of macrocyclic molecules and inorganic layered nanomaterials, that could potentially revolutionize water reuse and boron removal applications. © 2023, The Authors. All rights reserved.

关键词： Sodium chloride

Selective Co2–To–Co Photoreduction Over Orthophosphate Semiconductor Via Ag3po4 Quantum Dots Decorated Sns2 Nanosheets Direct Z-Scheme Heterojunction

学校读者我要写书评

暂无评论

SSRN 2022年

作者： Fu, Fang-Yu Fan, Chi-Chan Qorbani, Mohammad Huang, Chih-Yang Kuo, Ping-Chun Hwang, Jih-Shang Shu, Guo-Jiun Chang, Sue-Min Wu, Heng-Liang Wu, Chih-I Chen, Kuei-Hsien Chen, Li-Chyong Graduate Institute of Photonics and Optoelectronics National Taiwan University Taipei10617 Taiwan Center for Condensed Matter Sciences National Taiwan University Taipei10617 Taiwan Institute of Optoelectronic Science National Taiwan Ocean University Keelung202 Taiwan Center of Atomic Initiative for New Materials National Taiwan University Taipei10617 Taiwan Institute of Atomic and Molecular Sciences Academia Sinica Taipei10617 Taiwan Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei11529 Taiwan International Graduate Program of Molecular Science and Technology National Taiwan University Taipei10617 Taiwan Department of Materials and Mineral Resources Engineering National Taipei University of Technology Taipei106 Taiwan Institute of Environmental Engineering National Yang Ming Chiao Tung University Hsinchu30010 Taiwan Department of Physics National Taiwan University Taipei10617 Taiwan

Direct Z-scheme heterojunctions are widely used for photocatalytic water splitting and CO2 reduction by facilitating well-separated photogenerated charge carriers and spatial isolation of redox reactions. Here, using a facile two-step hydrothermal and ion-exchange methods, we uniformly decorate Ag3PO4 quantum dots with an average characteristic size of ~10.0 nm over SnS2 nanosheets to form a 0D/2D heterojunction. The direct Z-scheme mechanism is confirmed by the following experiments: (i) X-ray and ultraviolet photoelectron spectroscopies;(ii) Photodeposition of Pt and PbO2 nanoparticles on reduction and oxidation sites, respectively;and (iii) In-situ X-ray photoelectron spectroscopy. Owing to the photoreduction properties of Ag3PO4, Z-scheme charge transfer, and efficient exciton dissociation, an optimized heterojunction shows a high CO2-to-CO photoreduction yield of 18.3 μmol g-1 h-1 with an illustrious selectivity of ~95% under visible light illumination. Moreover, in-situ diffuse reflectance infrared Fourier transform spectroscopy demonstrates that the reduction pathway goes through the COOH* intermediate. © 2022, The Authors. All rights reserved.

关键词： Semiconductor quantum dots

NTRK3 exhibits a pro-oncogenic function in upper tract urothelial carcinomas

学校读者我要写书评

暂无评论

Kaohsiung Journal of Medical sciences 2024年第5期40卷 445-455页

作者： Lim, Lee-Moay Lee, Yi-Chen Lin, Ting-Wei Hong, Zi-Xuan Hsu, Wei-Chi Ke, Hung-Lung Hwang, Daw-Yang Chung, Wen-Yu Li, Wei-Ming Lin, Hui-Hui Kuo, Hung-Tien Huang, A-Mei Graduate Institute of Clinical Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan Division of Nephrology Department of Internal Medicine Kaohsiung Medical University Hospital Kaohsiung Medical University Kaohsiung Taiwan School of Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan Graduate Institute of Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan Department of Anatomy School of Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan Department of Urology School of Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan Department of Urology Kaohsiung Medical University Hospital Kaohsiung Medical University Kaohsiung Taiwan Department of Urology Kaohsiung Municipal Ta-Tung Hospital Kaohsiung Medical University Kaohsiung Taiwan National Institute of Cancer Research National Health Research Institute Tainan Taiwan Department of Computer Science and Information Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan Department of Urology Ministry of Health and Welfare Pingtung Hospital Pingtung Taiwan Department of Medical Research Kaohsiung Medical University Hospital Kaohsiung Medical University Kaohsiung Taiwan Doctoral Degree Program in Toxicology College of Pharmacy Kaohsiung Medical University Kaohsiung Taiwan Department of Biochemistry School of Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan Research Center for Environmental Medicine Kaohsiung Medical University Kaohsiung Taiwan

Neurotrophic receptor tyrosine kinase 3 (NTRK3) has pleiotropic functions: it acts not only as an oncogene in breast and gastric cancers but also as a dependence receptor in tumor suppressor genes in colon cancer and neuroblastomas. However, the role of NTRK3 in upper tract urothelial carcinoma (UTUC) is not well documented. This study investigated the association between NTRK3 expression and outcomes in UTUC patients and validated the results in tests on UTUC cell lines. A total of 118 UTUC cancer tissue samples were examined to evaluate the expression of NTRK3. Survival curves were generated using Kaplan–Meier estimates, and Cox regression models were used for investigating survival outcomes. Higher NTRK3 expression was correlated with worse progression-free survival, cancer-specific survival, and overall survival. Moreover, the results of an Ingenuity Pathway Analysis suggested that NTRK3 may interact with the PI3K-AKT-mTOR signaling pathway to promote cancer. NTRK3 downregulation in BFTC909 cells through shRNA reduced cellular migration, invasion, and activity in the AKT-mTOR pathway. Furthermore, the overexpression of NTRK3 in UM-UC-14 cells promoted AKT-mTOR pathway activity, cellular migration, and cell invasion. From these observations, we concluded that NTRK3 may contribute to aggressive behaviors in UTUC by facilitating cell migration and invasion through its interaction with the AKT-mTOR pathway and the expression of NTRK3 is a potential predictor of clinical outcomes in cases of UTUC. © 2024 The Authors. The Kaohsiung Journal of Medical sciences published by John Wiley & Sons Australia, Ltd on behalf of Kaohsiung Medical University.

关键词： AKT-mTOR pathway neurotrophic receptor tyrosine kinase 3 (NTRK3) prognosis tropomyosin-related kinase (TrK) upper tract urothelial carcinoma (UTUC)

Title Biodecolorization of Biogas Power Plant Effluent Derived from Anaerobically Digested Distillery Wastewater by Natural Selected Pseudomonas Putida from Activated Sludge of the Wastewater Treatment Plant

学校读者我要写书评

暂无评论

SSRN 2023年

作者： Kumkaew, Ponruedee Suaisom, Pitchaya Mukkata, Kanokwan Koonaphapdeelert, Sirichai Sawatdeenarunat, Chayanon Nitayavardhana, Saoharit Master’s Degree Program in Environmental Engineering Faculty of Engineering Chiang Mai University Chiang Mai50200 Thailand Graduate School Chiang Mai University Chiang Mai50200 Thailand Energy Research and Development Institute – Nakornping Chiang Mai University Chiang Mai50200 Thailand Department of Environmental Engineering Faculty of Engineering Chiang Mai University Chiang Mai50200 Thailand Asian Development College for Community Economy and Technology Chiang Mai Rajabhat University Chiang Mai50300 Thailand Center of Excellence in Materials Science and Technology Chiang Mai University Chiang Mai50200 Thailand

The main aim of this study was to utilize naturally selected Pseudomonas putida strains isolated from activated sludge in a wastewater treatment plant, for the purpose of bioremediation of biogas effluent to remove organic content and color. Biogas effluent from anaerobically digestion of distillery wastewater treated with P. putida at the best evaluated condition (sample concentration of 50% v/v, agitation and aeration rates of 250 rpm and 1.0 vvm for 6 days) showed significant decolorization and organic removal efficacies of 34.29 ± 0.87% and 38.94 ± 0.63%, respectively. Bioremediation efficiency was dependent on bacterial growth which organic content in sample and dissolved oxygen during cultivation were key factors. The natural selected bacterium could tolerate higher organic content and work synergistically with other indigenous microorganisms found in the biogas effluent. Consequently, bioremediation of biogas effluent by natural selected P. putida is feasible to apply in biogas power plant where sterilization is not necessary in the process. © 2023, The Authors. All rights reserved.

关键词： Bioremediation