检索结果-内蒙古大学图书馆

Synthesis and optimization of high surface area mesoporous date palm fiber-based nanostructured powder activated carbon for aluminum removal

引用

Chinese Journal of Chemical engineering 2021年第4期34卷 472-484页

作者： Alfarooq O.Basheer Marlia M.Hanafiah Mohammed Abdulhakim Alsaadi Y.Al-Douri Abbas A.Al-Raad Department of Earth Sciences and Environment Faculty of Science and TechnologyUniversiti Kebangsaan Malaysia43600 BangiSelangorMalaysia Centre for Tropical Climate Change System Institute of Climate ChangeUniversiti Kebangsaan MalaysiaBangi 43600SelangorMalaysia Nanotechnology and Catalysis Research Center(NANOCAT) University of Malaya50603 Kuala LumpurMalaysia National Chair of Materials Science and Metallurgy University ofNizwa611 NizawaOman University Research Center Cihan University SulaimaniyaSulaymaniyah 46002Iraq Department of Mechatronics Engineering Faculty of Engineering and Natural SciencesBahcesehir University34349 BesiktasIstanbulTurkey

Date palm fiber(DPF)derived from agrowaste was utilized as a new precursor for the optimized synthesis of a costeffective,nanostructured,powderactivated carbon(nPAC)for aluminum(Al3+)removal from aqueous solutions using carbonization,KOH activation,response surface methodology(RSM)and central composite design(CCD).The optimum synthesis condition,activation temperature,time and impregnation ratio were found to be 650℃,1.09 hour and 1:1,***,the optimum conditions for removal were 99.5%and 9.958 mgg 1 in regard to uptake *** optimum conditions of nPAC was analyzed and characterized using XRD,FTIR,FESEM,BET,TGA and Zeta ***,the adsorption of the Al3+conditions was optimized with an integrated RSMCCD experimental *** results revealed that the adsorption kinetics data was well fitted by the pseudosecond order model,whereas the adsorption isotherm data was best represented by the Freundlich isotherm *** activated carbon indicated that DPF can serve as a costeffective precursor adsorbent for Al^(3+)removal.

关键词： Agricultural waste Nanocomposites Wastewater treatment Industrial applications

来源：评论

学校读者我要写书评

暂无评论

The Anticancer and Apoptotic Activity of the Endophytic Fungus Phomopsis Sp. Isolated from Soursop Leaves in Mcf-7 Breast Cancer Cells: In Vitro and Computational in Silico Studies

SSRN

引用

SSRN 2025年

作者： Dwicesaria, Maheswari Alfira Priosoeryanto, Bambang Pontjo Hasan, Akhmad Endang Zainal Irsal, Riyan Alifbi Putera Gholam, Gusnia Meilin Mahendra, Fachrur Rizal Suminto, Syaefudin Indonesia Department of Biochemistry Faculty of Mathematics and Natural Sciences IPB University Dramaga Campus Bogor16680 Indonesia School of Veterinary Medicine and Biomedicine IPB University Bogor16680 Indonesia Faculty of Engineering Kyushu University Nishi-ku Fukuoka819-0395 Japan Tropical Biopharmaca Research Center IPB University Bogor16128 Indonesia Bioinformatics Study Program Faculty of Mathematics and Natural Sciences IPB University Bogor16680 Indonesia

This study investigated the anticancer potential of the endophytic fungus Phomopsis sp., extracted from soursop leaves. The metabolite profile of Phomopsis sp. was analyzed and its anticancer and apoptotic activities were assessed in both human breast cancer cell (MCF-7) and normal Vero cell lines. Phomopsis sp. were cultivated in yeast malt broth, extracted with ethyl acetate, and separated using column chromatography. The brine shrimp lethality test gave ten fractions (F1–F10), with F1 demonstrating the highest cytotoxicity (LC50 = 2.33 µg/mL). The obtained fractions were evaluated for antiproliferative effects, revealing an IC50 of 5.65 µg/mL for MCF-7 cells and 5.21 µg/mL for Vero cells, indicating effective anti-proliferation through apoptosis, as confirmed by acridine orange-ethidium bromide staining. Liquid Chromatography-tandem Mass Spectrometry identified 38 active compounds in F1, including known anticancer agents such as cytosporone C, kynurenic acid, maraniol, (-)-caryophyllene oxide, and chalcone. Computational in silico analyses utilizing PASS online, molecular docking, ADMET/pharmacokinetic studies, density functional theory (DFT) analysis, and molecular dynamics (MD) simulations further validated chalcone as a promising anticancer candidate. Chalcone exhibited favorable ADMET/pharmacokinetic properties and achieved the highest docking score -8.392 kcal/mol among the compounds tested. MD simulations over 300 ns demonstrated that chalcone outperformed tamoxifen, with binding energy calculations revealing a value of -227.069 kJ/mol compared to -45.598 kJ/mol for tamoxifen. These findings highlight the therapeutic potential of Phomopsis sp. and its bioactive compounds, particularly chalcones, as candidates for effective anti-breast cancer therapies. © 2025, The Authors. All rights reserved.

关键词： Column chromatography

来源：评论

学校读者我要写书评

暂无评论

Simple method of failure detection of rotary machines

引用

Diagnostyka 2021年第4期22卷 17-22页

作者： Bielecki, Andrzej Bielecka, Marzena Jablonski, Adam Staszewski, Wojciech Institute of Computer Science Faculty of Exact and Natural Sciences Pedagogical University in Krakow Podchorazych 2 Krakow30-084 Poland Geoinformatics and Applied Computer Science Faculty of Geology Geophysics and Environmental Protection AGH University of Science and Technology Mickiewicza 30 Krakow30-059 Poland Robotics and Mechatronics Faculty of Mechanical Engineering and Robotics AGH University of Science and Technology Mickiewicza 30 Krakow30-059 Poland

In the paper a simple unsupervised monitoring method of rotary machines is proposed. The method consists of three stages multi-reference preliminary analysis of the vibration signals, auto-reference preliminary analysis and probabilistic analysis of the signals. The method was tested by using signals from eight simulated machines. The efficiency of the method has been positively verified. © 2021 Polish Society of Technical Diagnostics. All rights reserved.

关键词： Vibration analysis

来源：评论

学校读者我要写书评

暂无评论

Comprehensive Insight into the Mechanism, Material Selection and Performance Evaluation of Supercapatteries

引用

Nano-Micro Letters 2020年第7期12卷 43-88页

作者： Saravanakumar Balasubramaniam Ankita Mohanty Suresh Kannan Balasingam Sang Jae Kim Ananthakumar Ramadoss School for Advanced Research in Polymers Laboratory for Advanced Research in Polymeric MaterialsCentral Institute of Plastics Engineering and TechnologyBhubaneswar 751024India Department of Materials Science and Engineering Faculty of Natural SciencesNorwegian University of Science and Technology(NTNU)Trondheim 7491Norway Nanomaterials and Systems Laboratory Major of Mechatronics EngineeringFaculty of Applied Energy SystemJeju National UniversityJeju 63243Republic of Korea

Electrochemical energy storage devices(EESs)play a crucial role for the construction of sustainable energy storage system from the point of generation to the end user due to the intermittent nature of renewable ***,to meet the demand for next-generation electronic applications,optimizing the energy and power densities of EESs with long cycle life is the crucial *** e orts have been devoted towards the search for new materials,to augment the overall performance of the *** there are a lot of ongoing researches in this field,the performance does not meet up to the level of commercialization.A further understanding of the charge storage mechanism and development of new electrode materials are highly *** present review explains the overview of recent progress in supercapattery devices with reference to their various *** di erent charge storage mechanisms and the multiple factors involved in the performance of the supercapattery are described in ***,recent advancements in this supercapattery research and its electrochemical performances are ***,the challenges and possible future developments in this field are summarized.

关键词： Supercapattery Energy density Power density Redox materials Carbon materials

来源：评论

学校读者我要写书评

暂无评论

Advancing neutron and photon shielding for space technology and electronic protection: Investigation of Nylon-Based and non-nylon-based polymers as soft protection materials through PHITS code

引用

Radiation Physics and Chemistry 2025年 237卷

作者： Alkarrani, Hessa Almisned, Ghada Zakaly, Hesham M.H. Kilic, Gokhan Issa, Shams A.M. Baykal, Duygu Sen Ene, Antoaneta Tekin, H.O. Research Institute for Medical and Health Sciences University of Sharjah Sharjah Sharjah27272 United Arab Emirates Department of Medical Diagnostic Imaging College of Health Sciences University of Sharjah Sharjah27272 United Arab Emirates Department of Physics College of Science Princess Nourah Bint Abdulrahman University P.O. Box 84428 Riyadh11671 Saudi Arabia Institute of Physics and Technology Ural Federal University Ekaterinburg620002 Egypt Department of Physics and Technical Sciences Western Caspian University Baku Russia Eskisehir Osmangazi University Faculty of Science Department of Physics EskisehirTR-26040 Turkey Department of Physics Faculty of Science University of Tabuk Tabuk Saudi Arabia Istanbul Nisantasi University Faculty of Engineering and Architecture Mechatronics Engineering Istanbul34398 Turkey Department of Chemistry Physics and Environment INPOLDE Research Center Faculty of Sciences and Environment Dunarea de Jos University of Galati 47 Domneasca Street Galati800008 Romania Istinye University Faculty of Engineering and Natural Sciences Computer Engineering Department Istanbul34396 Turkey

This study investigates the neutron and photon attenuation properties of various Nylon-Based and Non-Nylon-Based Polymers as soft protection materials for space technology and related applications. We analyzed the material densities, mass and linear attenuation coefficients, half-value layers, mean free paths, effective atomic numbers, effective electron densities, fast neutron effective removal cross-sections, and energy absorption buildup factor values of several polymers through PHITS code and other computational tools. Nylon Type 11 (Rilsan) emerged as a standout, offering substantial resistance to neutron radiation, highlighting its potential in sectors where neutron shielding is paramount. Conversely, Polyvinyl Chloride (PVC), characterized by its unique composition, demonstrated superior gamma-ray attenuation capabilities, making it an attractive option for environments predominantly exposed to gamma radiation. Our results showed that the efficacy of PVC in gamma shielding and Nylon Type 11's (Rilsan) notable neutron attenuation, demonstrating their potential as lightweight and environmentally sustainable alternatives for specific applications where lead's heavy weight poses a challenge. While lead remains superior in gamma shielding due to its high atomic number and density, the tested polymers offer practical advantages in applications requiring weight reduction and environmental considerations. © 2025 Elsevier Ltd

关键词： Reactor shielding

来源：评论

学校读者我要写书评

暂无评论

Kombucha tea derived from papaya (Carica papaya L.) as a potential functional food: physicochemical parameters, biological activities, and sensory evaluation

引用

International Journal of Food Science and Technology 2024年第10期59卷 7786-7794页

作者： Do, Anh Duy Nguyen, Le Bao Xuyen Pham, Dang Quoc Le, Thang Truong Leya, Mwense Phan Van, Thach Department of Biotechnology NTT Hi-tech Institute Nguyen Tat Thanh University Ho Chi Minh City700000 Viet Nam Department of Life Science College of Natural Sciences Hanyang University Seoul04763 Korea Republic of Faculty of Environmental and Food Engineering Institute of Applied Technology and Sustainable Development Nguyen Tat Thanh University Ho Chi Minh City700000 Viet Nam Smart Medicine and Health Informatics Program National Taiwan University Taipei City10617 Taiwan Biosafety Research Institute and Laboratory of Pathology College of Veterinary Medicine Jeonbuk National University Iksan54896 Korea Republic of

Fermented foods, such as kombucha, have gained popularity due to their rich content of beneficial bioactive compounds. Papaya leaves, known for their abundance of bioactive substances such as alkaloids, flavonoids, and phenolic compounds, have garnered attention for their potential to improve immune function by neutralising free radicals. This study investigates the suitability of papaya leaves and petioles as substrates for kombucha fermentation. Our findings indicate that papaya leaves and petioles were suitable substrates for kombucha fermentation, indicated by the SCOBY mass accumulation during fermentation. The gradual decrease in brix and pH values over a 14 days fermentation period corresponds to sugar metabolism and the accumulation of acetic acid. Additionally, fermentation increases total polyphenol (PPK: 250.07 ± 3.00 mg/L, PLK: 330.87 ± 15.56 mg/L) and total flavonoid content (PPK: 26.67 ± 6.31 mg/L, PLK: 34.44 ± 5.55 mg/L). Moreover, papaya-derived kombucha demonstrates enhanced antibacterial properties and inhibits ⍺-amylase linked to diabetes. Sensory evaluations confirm that papaya kombucha achieves a well-balanced and appealing sensory profile, catering to diverse palates. In summary, papaya leaves and petiole exhibit promise as substrates for kombucha production, offering elevated nutritional value and potential health advantages. © 2024 Institute of Food, Science and Technology (IFSTTF).

关键词： Substrates

来源：评论

学校读者我要写书评

暂无评论

Comprehensive climatic variability analysis and its significance on flood occurrences in the Middle Ganga Plain, India

引用

Discover Geoscience 2024年第1期2卷 1-26页

作者： Arora, Aman Siddiqui, Masood A. Geesupalli, Purna Durga Mishra, Varun Narayan Pandey, Manish Université Gustave Eiffel GERS-LEE Bouguenais France Department of Geography Faculty of Natural Sciences Jamia Millia Islamia New Delhi India Interdisciplinary Program in Climate Studies Indian Institute of Technology Bombay Mumbai India Amity Institute of Geoinformatics & Remote Sensing (AIGIRS) Amity University Noida India Marwadi University Research Centre Marwadi University Rajkot India Department of Civil Engineering Faculty of Engineering & Technology Marwadi University Rajkot India

Climate variability significantly affects rainfall, air temperature, relative humidity, and solar radiation. In subtropical regions like India, intense monsoon rainfall primarily causes floods. This study aims to analyze the climatic factors contributing to flood occurrence in the Middle Ganga Plain (MGP) by examining meteorological parameters through various analyses, including monthly and yearly trends, spatial variability, exceedance probability, historical highest intensity rainfall, and wind trajectory analysis. By establishing a strong link between climatic variables and flood events, this research provides valuable insights into the impact of climate variability on flood patterns in the MGP. Results indicate that monsoon rainfall peaks from July to October, correlating with major flood events. During these months, high relative humidity increases the likelihood of rainfall. Spatial analysis shows higher rainfall in the northern Middle Ganga Plain (MGP), which aligns with observed flood patterns. Trend detection tests reveal increasing annual rainfall and rising average temperatures. Geostatistical analysis identifies the western and eastern MGP as areas prone to extreme rainfall. Exceedance probability analysis confirms the occurrence of substantial monsoon rainfall events. Wind trajectory analysis uncovers seasonal shifts that lead to low-pressure systems and heavy monsoon rainfall. The study establishes a strong link between climatic variables and flood events in the MGP region.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Identification of D- and L-Phenylalanine Enantiomeric Mixtures by Employing Deep Neural Network Models

SSRN

引用

SSRN 2023年

作者： Nigdelioglu, Ebru Toprak, Elif Guney Akkurt, Melike Erol Barkana, Duygun Kazanci, Murat Uyaver, Sahin Calik, Nurullah Istanbul Medeniyet University Nanoscience and Nanoengineering Program Graduate School Istanbul Medeniyet University Istanbul34700 Turkey Istanbul Medeniyet University School of Engineering and Natural Sciences Department of Biomedical Engineering Istanbul Turkey Istanbul34700 Turkey Yeditepe University Faculty of Engineering Department of Electrical and Electronics Engineering Kayışdagı Istanbul34755 Turkey Marmara University Faculty of Technology Department of Computer Engineering Maltepe Istanbul34854 Turkey

Phenylalanine is an aromatic essential amino acid that exhibits the tendency to self-aggregate into fibrillar structures in its enantiomerically pure form. This observation was indicated as the underlying mechanism of phenylketonuria, which is a genetic condition associated with various neurological, physical, and developmental issues, characterized with phenylalanine buildup in the brain. The presence of D-phenylalanine was demonstrated previously to inhibit the formation of fibrils by L-phenlyalanine, indicating its potential use in phenylketonuria treatment. In this study, several combinations of D and L-phenylalanine were examined with the help of state-of-the-art deep learning methods for their fibril forming capacity, demonstrating the usefulness and accuracy of deep learning methods in distinguishing between different self-assembled structures. © 2023, The Authors. All rights reserved.

关键词： Self assembly

来源：评论

学校读者我要写书评

暂无评论

Bo-derived waste neem to enriching reinforced hybrid composite for environmental remediation

引用

Chemosphere 2024年 350卷 141055页

作者： Anbuchezhiyan, Gnanasambandam Mubarak, Nabisab Mujawar Hussain Siddiqui, Muhammad Tahir Malafaia, Guilherme Abnisa, Faisal Department of Mechanical Engineering Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Tamil Nadu Chennai602105 India Petroleum and Chemical Engineering Faculty of Engineering Universiti Teknologi Brunei Bandar Seri BegawanBE1410 Brunei Department of Chemistry School of Chemical Engineering and Physical Sciences Lovely Professional University Punjab Jalandhar India Department of Chemical and Materials Engineering Faculty of Engineering King Abdulaziz University Rabigh21911 Saudi Arabia School of Engineering RMIT University MelbourneVIC3001 Australia Post-Graduation Program in Ecology Conservation and Biodiversity Federal University of Uberlândia MG Uberlândia Brazil Laboratory of Toxicology Applied to the Environment Goiano Federal Institute – Urutaí Campus. Rodovia Geraldo Silva Nascimento 2 5 Km Zona Rural GO Urutaí Brazil Post-Graduation Program in Conservation of Cerrado Natural Resources Goiano Federal Institute Post-Graduation Program in Biotechnology and Biodiversity Federal University of Goiás GO Goiânia Brazil

The utilization of natural fibres often entails a lesser environmental impact when compared to synthetic fibres. Biodegradable natural fibres minimize waste and pollution, and promote sustainability, but their weaker bonds limit their resilience. These issues can be addressed by customizing the composite's mechanical properties with natural and synthetic fibres. In this study, hybrid composites were created using the hand layup method with a novel dissimilar layer arrangement of neem (N), sisal (S), and glass (G) fibre and analyze its mechanical and thermal properties. Experimental observation shows that the GN composite had a higher maximum ultimate tensile strength of 26 N/mm2 than the GS, GNS, and GSN composites. The GN composite had a percentage elongation of 6.33%, similar to the percentage elongation of the GS composite (6.833%), and it also had a higher ultimate shear strength of 50 MPa. The composite GS absorbed 6.6 J energy, higher than the composites GN, GNS, and GNS, which absorbed 6.1 J, 4.5 J, and 4.5 J, respectively. The fractured surface's SEM images were obtained and analyzed for failure. The results demonstrated that the hybridization was effective, and better properties can be obtained by combining neem, sisal, and glass fiber, and it can be used for other requirements, including strength, weight, cost, and ecological impact. © 2024 Elsevier Ltd

关键词： Glass

来源：评论

学校读者我要写书评

暂无评论

Elastic modulus, nuclear radiation transmission properties of Fe-based/contained novel alloys for critical radiation applications

引用

Radiation Physics and Chemistry 2025年 237卷

作者： ALMisned, Ghada Susoy, Gulfem Baykal, Duygu Sen Alkarrani, Hessa Güler, Ömer Issa, Shams A.M. Zakaly, Hesham M.H. Tekin, H.O. Department of Physics College of Science Princess Nourah Bint Abdulrahman University P.O. Box 84428 Riyadh11671 Saudi Arabia Istanbul University Faculty of Science Department of Physics Istanbul34134 Turkey Istanbul Nisantasi University Faculty of Engineering and Architecture Mechatronics Engineering Istanbul34398 Turkey Research Institute for Medical and Health Sciences University of Sharjah Sharjah Sharjah27272 United Arab Emirates Department of Medical Diagnostic Imaging College of Health Sciences University of Sharjah Sharjah27272 United Arab Emirates Munzur University Rare Earth Elements Application and Research Center Tunceli62000 Turkey Physics Department Faculty of Science University of Tabuk Tabuk Saudi Arabia Physics Department Faculty of Science Al-Azhar University Assiut Egypt Institute of Physics and Technology Ural Federal University Yekaterinburg Russia Istinye University Faculty of Engineering and Natural Sciences Computer Engineering Department Istanbul34396 Turkey

This study explores the gamma-ray and neutron shielding properties and mechanical performance of eight Fe-based alloys with varying elemental compositions and densities. Different parameters such as mass attenuation coefficients, linear attenuation coefficients, half-value layer, tenth-value layer, mean free path, fast neutron removal cross-sections, transmission factors were analysed using PHITS and Phy-X/PSD codes. Moreover, elastic modulus values were calculated for each alloy sample. Our results reveal that the S9 alloy, with high density and tungsten contribution, exhibited superior shielding and mechanical properties, achieving the lowest TF, HVL, and TVL values. In contrast, the low-density S1 alloy performed weakest, reflecting its lighter elemental composition. Intermediate alloys like MAR-302 and Cupero-Nickel showed balanced performance, suitable for moderate shielding needs. Strong correlations between elemental compositions, particularly high-Z elements like tungsten and boron, and shielding efficiency were observed. It can be concluded that optimizing elemental composition and density is critical for designing alloys with enhanced multifunctional properties. © 2025 Elsevier Ltd

关键词： Gamma rays

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：