检索结果-内蒙古大学图书馆

Biosynthesis, characterization, and in-vitro anticancer effect of plant-mediated silver nanoparticles using Acalypha indica Linn: In-silico approach

引用

OpenNano 2025年 21卷

作者： Madaniyah, Luailik Fiddaroini, Saidun Hayati, Elok Kamilah Rahman, Moh. Farid Sabarudin, Akhmad Department of Chemistry Faculty of Science Brawijaya University Malang Indonesia Chemistry Study Program Faculty of Science and Technology Maulana Malik Ibrahim Islamic State University Malang Indonesia Research Center for Advanced System and Material Technology Brawijaya University Malang 10 Indonesia

Cancer is a significant global health issue, with rising prevalence and mortality rates demanding urgent attention. The World Health Organization emphasizes the need for effective prevention, early detection, and treatment strategies to address this public health challenge. Current treatment modalities, including surgery, hormonal therapy, immunotherapy, radiation therapy, and chemotherapy, are often associated with considerable side effects and high costs. This study investigates the biosynthesis of silver nanoparticles using Acalypha indica L. (AgNPs), a medicinal plant recognized for its therapeutic benefits, as a potential cancer treatment with minimal side effects and a lower risk of drug resistance. AgNPs exhibit anti-inflammatory properties and the ability to inhibit angiogenesis while counteracting drug resistance mechanisms. Moreover, the use of chitosan as a coating on AgNPs (AgNPs-Chit) enhances their stability and specificity toward cancer cells, thereby improving their anticancer efficacy. Characterization of the synthesized AgNPs was conducted using various techniques, including UV-Vis spectroscopy, X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), particle size analysis (PSA), and transmission electron microscopy (TEM), confirming the successful synthesis, stability, and spherical morphology of the nanoparticles, with an average diameter of 7 nm and a zeta potential of −24.51 mV. In vitro cytotoxicity testing showed that AgNPs-Chit exhibited stronger anticancer activity against T47D cells with an IC₅₀ value of 173 µg/mL, compared to AgNPs (IC₅₀ 244 µg/mL) and the Acalypha indica L extract (IC₅₀ 826 µg/mL). When compared to the control, treatments with AgNPs-Chit, AgNPs, and the plant extract demonstrated statistically significant differences (∗p < 0.05, ∗∗p < 0.01). These results indicate that the modification of AgNPs with chitosan (AgNPs-Chit) significantly enhances anticancer efficacy compared

关键词： Acalypha Indica L. Anticancer activity Chitosan Molecular docking Silver nanoparticles

来源：评论

学校读者我要写书评

暂无评论

Attributional life cycle assessment of recycling and disposal strategies for construction and demolition waste

引用

Cleaner Environmental Systems 2025年 18卷

作者： Kanwal, Qudsia Xu, Guochang Gari, Ziad Alhusainan, Ream S. Al-Ghamdi, Sami G. Environmental Science and Engineering Program Biological and Environmental Science and Engineering Division King Abdullah University of Science and Technology Thuwal23955-6900 Saudi Arabia KAUST Climate and Livability Initiative King Abdullah University of Science and Technology Thuwal23955-6900 Saudi Arabia Material Cycles Division National Institute for Environmental Studies Onogawa 16-2 Tsukuba305-8506 Japan

The management of Construction and Demolition Waste (CDW) poses significant environmental challenges in Saudi Arabia, exacerbated by rapid urbanization and the Giga Projects under Vision 2030. This study presents a Life Cycle Assessment (LCA) of CDW management practices across seventeen municipalities, providing the first region-specific evaluation of environmental impacts using comprehensive data. By integrating primary and secondary data from local sources, Ecoinvent 3.91, and GaBi Sphera, the study evaluates key CDW disposal methods: sanitary landfilling, incineration, and recycling. The findings reveal that advanced recycling infrastructure (e.g., compactor trucks, recycling facilities) significantly reduces non-renewable energy use, Global Warming Potential (GWP), and downstream emissions, particularly in high CDW-generating regions like Riyadh and Jeddah. Notably, recycling achieves a GWP reduction of up to 75 million kg CO2-eq annually for key materials like mixed soil and concrete. Furthermore, the study contributes to global CDW management literature by presenting a replicable LCA framework that can be applied to other rapidly urbanizing economies facing similar waste management challenges. This framework offers valuable insights for policymakers, urban planners, and researchers seeking to develop sustainable CDW management strategies aligned with circular economy principles and international sustainability goals. © 2025 The Authors

关键词： Project management

来源：评论

学校读者我要写书评

暂无评论

Surface Plasmon Resonance Application for Bacteria Pathogen Detection: A Minireview 1

Surface Plasmon Resonance Application for Bacteria Pathogen ...

引用

1st Annual International Conference on Sensor technology, INCOST 2023

作者： Putri, Sherlyna Anggraini Yuliarto, Brian Nugraha Magister Program of Nanotechnology Faculty of Graduate School Institut Teknologi Bandung Ganesha 10 Bandung40132 Indonesia Advanced Functional Material Research Group Faculty of Industrial Technology Institut Teknologi Bandung Jl. Ganesha No. 10 Bandung40132 Indonesia Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia BRIN and ITB Collaboration Research Center for Biosensor and Biodevices Institut Teknologi Bandung Bandung40132 Indonesia

Detection of pathogenic bacteria requires a fast and accurate process so technological developments related to the sensitivity and selectivity of a sensor are very concerned. Surface Plasmon Resonance (SPR) technology has great potential to detect pathogenic bacteria that are not only used for medical diagnostics, but food safety surveillance and environmental monitoring are also applications of SPR. The success of SPR has proven the advantages of real-time detection without the need for fluorescent markers or additional dyes. The development of sensor surface systems of SPR with nanomaterials is one of the discussions in this paper. The recent development of SPR in recent years is summarized by linking future prospective applications. © Published under licence by IOP Publishing Ltd.

关键词： Surface plasmon resonance

来源：评论

学校读者我要写书评

暂无评论

Directly and instantly seeing through random diffusers by self-imaging in scattering speckles

引用

PhotoniX 2023年第1期4卷 674-687页

作者： Jietao Liu Wenhong Yang Guofeng Song Qiaoqiang Gan Laboratory of Photonic Integrated Circuits Xiong’an Institute of InnovationChinese Academy of SciencesXiong’an New AreaBeijing 071700Hebei ProvinceChina 2 Sustainability&Photonics Energy Research LaboratoryMaterial Science Engineering programDivision of Physical Science&EngineeringKing Abdullah University of Science and TechnologyThuwalSaudi Arabia

Imaging through scattering medium is challenging but important for different *** advances rely on computational image reconstruction from scattering *** these conventional investigations,speckles were always treated as scrambled grainy *** seeing through scattering diffusers has never been ***,we report a new strategy to see through random diffusers directly using self-imaging of *** analyzing the physics,a direct observation strategy through scattering media is reported with improved image *** this method,we experimentally demonstrated reconstruction-free real-time imaging of static and moving objects with their actual orientation information under single-wavelength and white light *** also proposed a modified speckle autocorrelation imaging(SAI)method inspired by the self-imaging ***,our strategy requires no pre-calibration or acquisition of point-spread-function,no active control of wavefronts or complicated equipment,nor iterations or carefully adjusted parameters,paving the way towards rapid and high-quality imaging through scattering diffusers.

关键词： speckle random instant

来源：评论

学校读者我要写书评

暂无评论

Gelatine-Based Phantom For Simulating A-Line Reverberations in Lung Ultrasonogram

Gelatine-Based Phantom For Simulating A-Line Reverberations ...

引用

International Conference on Instrumentation Control and Automation (ICA)

作者： Citra Alfa Nabila Saeful Bahri Damar Rastri Adhika Suprijanto Suprijanto Master Program of Instrumentation and Control Faculty of Industrial Technology Institut Teknologi Bandung Bandung Indonesia Doctoral Program of Engineering Physics Faculty of Industrial Technology Institut Teknologi Bandung Bandung Indonesia Advanced Functional Material Research Group Faculty of Industrial Technology Research Center of Nanosciences and Nanotechnology Institut Teknologi Bandung Bandung Indonesia Instrumentation and Control Research Group Faculty of Industrial Technology Institute Teknologi Bandung Bandung Indonesia

To understand typical features that could be imaged using ultrasonography (USG) in the training phases of medical students or practitioners, a lung phantom is required. The research team suggests using a gelatine-based phantom to demonstrate A-line reverberations in lung ultrasound. The ordinary gelatine-based phantom has the disadvantage of being too fragile and prone to breaking. The specific process was attempted on gelatine with a plasticizer and carrier agent to increase the gelatine's strength and elasticity. To simulate the A-lines, two different textures of gelatine layers are used, with other processes in between. A special procedure was used to set off the various acoustic impedances affecting reverberation physics with those varied textures. Based on USG image analysis, the proposed lung phantom material has some advantages: it is inexpensive and easy to find, despite its complicated procedures. Furthermore, it could be processed to have the desired properties and recycled after hardening with water bath melting.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Structural and thermal analysis of bio-based polybenzoxazine derived from liquefied empty fruit bunch (EFB) via solventless method 3

Structural and thermal analysis of bio-based polybenzoxazine...

引用

3rd Symposium on Industrial Science and technology, SISTEC 2021

作者： Rohimi, Nurfatin Farhanah Yaakob, Muhd Nor Arifin Roslan, Rasidi Salim, Nurjannah Mustapha, Siti Noor Hidayah Rahim, Mohd Hasbi Ab Chia, Chin-Hua Zakaria, Sarani Advanced Material Group Faculty of Industrial Sciences and Technology Universiti Malaysia Pahang Pahang Kuantan Gambang26300 Malaysia Bioresources and Biorefinery Laboratory Materials Science Program Faculty of Science and Technology Universiti Kebangsaan Malaysia Selangor Bangi43600 Malaysia

A bio-based polybenzoxazine demonstrating excellent thermal properties was synthesized using phenolic and its derivatives derived from liquefaction of empty fruit bunch (EFB) fibres to fulfill green chemistry principles. The liquefied EFB was reacted with furfurylamine and paraformaldehyde through a Mannich condensation reaction. For comparison purposes, a guaiacol polybenzoxazine was synthesized using guaiacol as a phenolic component reacted with similar amine and aldehyde. Both types of polybenzoxazine synthesized from liquefied EFB and guaiacol were named L-fa and G-fa, respectively. The structural analysis was performed using Fourier-Transform Infrared (FTIR) and proton Nuclear Magnetic Resonance (1H NMR). It was observed that the synthesis of benzoxazine groups for both types of polybenzoxazine was successful with the formation of the oxazine ring. Thermal stability showed that liquefied EFB polybenzoxazine (L-fa) has higher thermal stability above 360 °C compared to guaiacol-polybenzoxazine (G-fa), which is higher is 280 °C due to the complex structure of the lignin derivative in the liquefied EFB. For polymerization behavior, L-fa exhibit two exothermic peaks compared to three peaks on G-fa, indicating that L-fa is more reactive due to additional polymerizable sites present in L-fa. This work widens the synthesis route for the preparation of bio-based benzoxazine derived from oil palm waste which will perpetuate outstanding evolution towards the sustainable development of the bio-based polymeric industry. Copyright © 2021 Elsevier Ltd. All rights reserved.

关键词： Condensation reactions

来源：评论

学校读者我要写书评

暂无评论

GO/ZnO Biosensor Synthesis and Characterization for Biosensors 1

GO/ZnO Biosensor Synthesis and Characterization for Biosenso...

引用

1st Annual International Conference on Sensor technology, INCOST 2023

作者： Atikah, Fitri Yuliarto, Brian Manurung, Robeth Viktoria Master Program of Nanotechnology Faculty of Graduate School Institut Teknologi Bandung Ganesha 10 Bandung40132 Indonesia Advanced Functional Material Research Group Faculty of Industrial Technology Institut Teknologi Bandung Jl. Ganesha No. 10 Bandung41032 Indonesia Institut Teknologi Bandung Jl. Ganesha No. 10 Bandung41032 Indonesia Kawasan Puspiptek South Tangerang15134 Indonesia BRIN and ITB Collaboration Research Center for Biosensor and Biodevices Institut Teknologi Bandung Bandung40132 Indonesia

In this study, GO/ZnO nanoparticles were synthesized using the solvothermal method and characterized for potential biosensor applications. The synthesized nanoparticles exhibited a high degree of crystalline structural purity, as confirmed by XRD analysis. The XRD pattern revealed characteristic peaks corresponding to the crystal planes of ZnO, indicating a typical wurtzite hexagonal structure. In addition, the synthesized nanoparticles were evaluated for their physical characteristics using transmission electron microscopy. The TEM analysis showed that the ZnO nanoparticles had a narrow size distribution, with an average particle size of approximately 25.19 ± 4.1 nm. The morphology of the nanoparticles was further examined, revealing that the ZnO nanoparticles were uniformly dispersed and localized within the GO sheets. Furthermore, the exfoliation of GO into single or few-layered sheets was achieved, as evidenced by its transparency in the TEM images. These findings suggest that the solvothermal synthesis method is effective in producing highly dispersed GO/ZnO nanoparticles with a narrow size distribution. The synthesized GO/ZnO nanoparticles showed promise for biosensor applications due to their uniform shape and distribution, as well as their small size. © Published under licence by IOP Publishing Ltd.

关键词： ZnO nanoparticles

来源：评论

学校读者我要写书评

暂无评论

Evaluation of the Flexible sEMG Electrode Prototype Using Dry Swallow Characterization

Evaluation of the Flexible sEMG Electrode Prototype Using Dr...

引用

International Conference on Instrumentation Control and Automation (ICA)

作者： Rengganis Ridwan Heru Santoso Damar Rastri Adhika Fathur Rahman Suprijanto Suprijanto Magister Program of Instrumentation and Control Faculty of Industrial Technology Institut Teknologi Bandung Bandung Indonesia Advanced Functional Material Research Group Faculty of Industrial Technology Research Center of Nanoscience and Nanotechnology Institut Teknologi Bandung Bandung Indonesia Magister Program of Nanotechnology Graduate School Institut Teknologi Bandung Bandung Indonesia Instrumentation and Control Research Group Faculty of Industrial Technology Institut Teknologi Bandung Bandung Indonesia

Acute stroke is often followed by dysphagia. Currently, Videofluoroscopy Swallow Study (VFSS) is accepted as a gold standard to evaluate the severity of dysphagia. However, the usage of X-rays in VFSS limits the frequency of evaluation on the patient. Surface Electromyography (sEMG) can be used as a supportive tool for dysphagia evaluation. However, the size and rigidity of the conventional electrode used in sEMG made measuring the muscle activity on the neck muscle difficult. A flexible electrode is developed to tackle those problems. However, a characterization of the developed flexible electrode is needed to ensure that the flexible electrode’s performance matches the conventional electrode’s performance. In this paper, we evaluate the performance of the conventional and flexible electrode based on their spectral characteristics. Both electrodes are used to measure three dry swallow procedures. Spectral estimation of the measured signal is obtained using Welch’s power spectral density and then compared for both electrodes. The signal-to-noise (SNR) is also calculated to see the fidelity of the obtained signal. As a result, the flexible electrode has comparable performance to the conventional electrode.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Zema Dataset: A Comprehensive Study of Yaredawi Zema with a Focus on Horologium Chants

arXiv

引用

arXiv 2024年

作者： Muluneh, Mequanent Argaw Peng, Yan-Tsung Degife, Worku Abebe Tadesse, Nigussie Abate Demeku, Aknachew Mebreku Su, Li Institute of Information Science Academia Sinica Taipei Taiwan Department of Information System University of Gondar Gondar Ethiopia Department of Computer Science National Chengchi University Taipei Taiwan Social Networks and Human-Centered Computing Program Taiwan International Graduate Program Taiwan Department of Information Management National Taiwan University of Science and Technology Taipei Taiwan Department of Material Science and Engineering National Taiwan University of Science and Technology Taipei Taiwan

Computational music research plays a critical role in advancing music production, distribution, and understanding across various musical styles in the world. Despite the immense cultural and religious significance, the Ethiopian Orthodox Tewahedo Church (EOTC) chants are relatively underrepresented in computational music research. This paper contributes to this field by introducing a new dataset specifically tailored for the analysis of EOTC chants, also known as Yaredawi Zema. This work provides a comprehensive overview of a 10-hour dataset, 369 instances, creation, and curation process, including rigorous quality assurance measures. Our dataset has a detailed word-level temporal boundary and reading tone annotation along with the corresponding chanting mode label of audios. Moreover, we have also identified the chanting options associated with multiple chanting notations in the manuscript by annotating them accordingly. Our goal in making this dataset available to the public1 is to encourage more research and study of EOTC chants, including lyrics transcription, lyric-to-audio alignment, and music generation tasks. Such research work will advance knowledge and efforts to preserve this distinctive liturgical music, a priceless cultural artifact for the Ethiopian people. © 2024, CC BY.

关键词： Music

来源：评论

学校读者我要写书评

暂无评论

Structural and thermal analysis of bio-based polybenzoxazine derived from liquefied empty fruit bunch (EFB) via solventless method

引用

materials Today: Proceedings 2022年 51卷 1367-1371页

作者： Nurfatin Farhanah Rohimi Muhd Nor Arifin Yaakob Rasidi Roslan Nurjannah Salim Siti Noor Hidayah Mustapha Mohd Hasbi Ab. Rahim Chin-Hua Chia Sarani Zakaria Advanced Material Group Faculty of Industrial Sciences and Technology Universiti Malaysia Pahang 26300 Gambang Kuantan Pahang Malaysia Bioresources and Biorefinery Laboratory Materials Science Program Faculty of Science and Technology Universiti Kebangsaan Malaysia 43600 Bangi Selangor Malaysia

A bio-based polybenzoxazine demonstrating excellent thermal properties was synthesized using phenolic and its derivatives derived from liquefaction of empty fruit bunch (EFB) fibres to fulfill green chemistry principles. The liquefied EFB was reacted with furfurylamine and paraformaldehyde through a Mannich condensation reaction. For comparison purposes, a guaiacol polybenzoxazine was synthesized using guaiacol as a phenolic component reacted with similar amine and aldehyde. Both types of polybenzoxazine synthesized from liquefied EFB and guaiacol were named L-fa and G-fa, respectively. The structural analysis was performed using Fourier-Transform Infrared (FTIR) and proton Nuclear Magnetic Resonance ( 1 H NMR). It was observed that the synthesis of benzoxazine groups for both types of polybenzoxazine was successful with the formation of the oxazine ring. Thermal stability showed that liquefied EFB polybenzoxazine (L-fa) has higher thermal stability above 360 °C compared to guaiacol-polybenzoxazine (G-fa), which is higher is 280 °C due to the complex structure of the lignin derivative in the liquefied EFB. For polymerization behavior, L-fa exhibit two exothermic peaks compared to three peaks on G-fa, indicating that L-fa is more reactive due to additional polymerizable sites present in L-fa. This work widens the synthesis route for the preparation of bio-based benzoxazine derived from oil palm waste which will perpetuate outstanding evolution towards the sustainable development of the bio-based polymeric industry.

关键词： Liquefaction Guaiacol Thermoset Renewable polymer Polybenzoxazine Solventless method

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：