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A review: Outdoor visible light communication on modulation and receiver denoising scheme

AIP Conference Proceedings 2024年第1期2898卷

作者： Norzalina Othman Mohd Rashidi Che Beson Syed Alwee Aljunid Rosdisham Endut Faculty of Electronic Engineering Technology Universiti Malaysia Perlis (UniMAP) Perlis Malaysia Electrical Electronic and Automation Sect. (EEA) Universiti Kuala Lumpur Malaysian Spanish Institute (UniKL MSI) Kulim Hi-Tech Park Kedah Malaysia Advanced Communication Engineering Centre of Excellence (ACE-CoE) Faculty of Electronic Engineering Technology Universiti Malaysia Perlis Perlis Malaysia

A rapid growth of wireless communication system has boosted the exponential development on smart technology while driving a substantial increase in traffic volume. With a highly congested and demand on RF bandwidth spectrum, Visible Light Communication (VLC) seem as a complementary technology towards RF based system which provide wider bandwidth, free and unregulated channel, poses no health hazard, high security and low power consumption leads VLC to be one of the promising technology in data transmission. By maintaining the main purpose of illumination, the exploitation on the existing LED-based lighting system is used as a transmission mechanism to photodetector or image sensor which is used to detect the variations of the light intensity via free space optical channels. Different VLC modulation schemes is review in this paper to see the pros and cons of each scheme implemented in outdoor application specifically for vehicle-to-vehicle (V2V) VLC system. Various type of noises is presented in this paper with the denoising scheme to eliminate or reduce the shot and thermal noise caused by natural sunlight and artificial roadside infrastructure light which degrades the performance of VLC system.

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Topological Defect and Sp3/Sp2 Carbon Interface Derived from Zif-8 with Linker Vacancies for Oxygen Reduction Reaction

SSRN

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SSRN 2022年

作者： Gao, Haixing Wang, Shuo Cheong, Weng-Chon Wang, Kaixi Huang, Aijian Ma, Junguo Li, Jiazhan Hui, Kwan San Dinh, Duc Anh Fan, Xi Bin, Feng Chen, Fuming Hui, Kwun Nam Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials Engineering University of Macau 999078 China Department of Physics and Chemistry Faculty of Science and Technology University of Macau 999078 China School of Electronics Science and Engineering University of Electronic Science and Technology of China Chengdu610054 China Department of Chemistry Tsinghua University Beijing100084 China School of Engineering Faculty of Science University of East Anglia NorwichNR4 7TJ United Kingdom NTT Hi-Tech Institute Nguyen Tat Thanh University Ho Chi Minh City700000 Viet Nam Ningbo Institute of Materials Technology Engineering Chinese Academy of Sciences Ningbo315201 China State Key Laboratory of High-Temperature Gas Dynamics Institute of Mechanics Chinese Academy of Sciences Beijing100190 China State Key Laboratory of Optic Information Physics and Technologies School of Physics and Telecommunication Engineering South China Normal University Guangzhou510006 China

Defects in nanocarbon materials can trigger their intriguing electrochemical properties and potential applications, but their synthesis is challenging. Herein, we report the synthesis of ultrathin nitrogen-doped carbon nanosheets with intrinsic defects through the pyrolysis of ZIF-8 with linker vacancies. The as-synthesized electrocatalyst exhibits excellent oxygen reduction reaction (ORR) activity with an onset potential and half-wave potential of 1.05 and 0.873 V vs. RHE, respectively, outperforming the reported metal-free ORR electrocatalysts. It also shows a commercial Pt/C-comparable performance in zinc–air battery with a power density of 154.4 mW cm –2 . Characterization and DFT calculation results suggest the adjacent sp 3 -carbon in carbon pentagon can significantly strengthen the adsorption and activation of oxygen molecules on sp 2 -carbon, hence the potential determining step is altered and ORR overpotential is lowered. This work highlights a promising green synthesis strategy of MOF-derived metal-free nanocarbon materials for wide application in advanced energy technologies. © 2022, The Authors. All rights reserved.

关键词： Carbon

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Formulation of face-wash from coconut (Cocos nucifera (l.)) oil in ben tre province, vietnam

Formulation of face-wash from coconut (Cocos nucifera (l.)) ...

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International Conference on Advances in Material Science, ICAMS 2020

作者： Ngan, Tran Thi Kim hien, Tran Thien Nhan, Le Thi Hong Le, Xuan Tien Center of Excellence for Biochemistry and Natural Products Nguyen Tat Thanh University Ho Chi Minh City700000 Viet Nam NTT Hi-Tech Institute Nguyen Tat Thanh University Ho Chi Minh City700000 Viet Nam Department of Chemical Engineering Ho Chi Minh City University of Technology [HCMUT Ho Chi Minh City700000 Viet Nam Vietnam National University Ho Chi Minh City Ho Chi Minh City700000 Viet Nam

ISBN: (纸本)9783035738353

Today, the need for human care and beauty is increasing. The use of personal care products, especially those from nature, has been given special attention by consumers. With diverse features and good effects on the human body, especially the skin, coconut oil is being cared for by many manufacturers. With the aim of diversifying personal care products from coconut oil, this research has initially achieved positive results. Soap saponified as raw soap is considered to have good cleaning effect (better than sodium lauryl sulfate solution (SLS) when diluted to the same concentration). The combination of 10% crude soap and 4% sodium lauryl ether sulfate (SLES) surfactants formulate cleansing products with effective cleansing properties. Ingredients auxiliary cleaners, moisturizing, and softening, antioxidants are added with the appropriate content to improve the disadvantages of raw soap. The personal care products that have been studied have the potential to enter the cosmetic market and attract many consumers. © 2021 Trans tech Publications Ltd, Switzerland.

关键词： Sulfur compounds

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An ER-targeted, Viscosity-sensitive Hemicyanine Dye for the Diagnosis of Nonalcoholic Fatty Liver and Photodynamic Cancer Therapy by Activating Pyroptosis Pathway

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Angewandte Chemie 2024年第9期136卷

作者： Shuang Zeng Yang Wang Chen Chen Heejeong Kim Xiaosheng Liu Maojun Jiang Yichu Yu Yves S. Kafuti Prof. Qixian Chen Prof. Jingyun Wang Prof. Xiaojun Peng Prof. Haidong Li Prof. Juyoung Yoon State Key Laboratory of Fine Chemicals Dalian University of Technology 2 Linggong Road Hi-tech Zone 116024 Dalian China MOE Key Laboratory of Bio-Intelligent Manufacturing School of Bioengineering Dalian University of Technology 2 Linggong Road Hi-tech Zone 116024 Dalian China Department of Chemistry and Nanoscience Ewha Womans University 03760 Seoul Korea Provincial Key Laboratory of Interdisciplinary Medical Engineering for Gastrointestinal Carcinoma Cancer Hospital of Dalian University of Technology Liaoning Cancer Hospital & Institute) 110042 Shenyang Liaoning China

The concept of molecular design, integrating diagnostic and therapeutic functions, aligns with the general trend of modern medical advancement. Herein, we rationally designed the smart molecule ER-ZS for endoplasmic reticulum (ER)-targeted diagnosis and treatment in cell and animal models by combining hemicyanine dyes with ER-targeted functional groups ( p -toluenesulfonamide). Owing to its ability to target the ER with a highly specific response to viscosity, ER-ZS demonstrated substantial fluorescence turn-on only after binding to the ER, independent of other physiological environments. In addition, ER-ZS , being a small molecule, allows for the diagnosis of nonalcoholic fatty liver disease (NAFLD) via liver imaging based on high ER stress. Importantly, ER-ZS is a type I photosensitizer, producing O 2 ⋅ − and ⋅OH under light irradiation. Thus, after irradiating for a certain period, the photodynamic therapy inflicted severe oxidative damage to the ER of tumor cells in hypoxic (2 % O 2 ) conditions and activated the unique pyroptosis pathway, demonstrating excellent antitumor capacity in xenograft tumor models. Hence, the proposed strategy will likely shed new light on integrating molecular optics for NAFLD diagnosis and cancer therapy.

关键词： Endoplasmic Reticulum-Targeted Nonalcoholic Fatty Liver Disease Visualization Photodynamic Cancer Therapy Pyroptosis Viscosity-Sensitive

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Two-dimensional viscoelastic imaging using an enhanced FDTD-Ahi approach

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Research on Biomedical engineering 2021年第2期37卷 339-349页

作者： Quang-Huy, Tran Yen, Nguyen Thi Hoang Le, Truong Giang Tran, Duc-Tan Faculty of Physics Hanoi Pedagogical University 2 Nguyen Van Linh Street Xuan Hoa Ward Phuc YenVinh Phuc Province Viet Nam Faculty of Technology and Education Hanoi National University of Education 136 Xuan Thuy Street Dich Vong Hau Ward Cau Giay District Hanoi Viet Nam NTT Hi-Tech Institute Nguyen Tat Thanh University Ho Chi Minh City700000 Viet Nam Faculty of Mechanical Electrical Electronic and Automotive Engineering Nguyen Tat Thanh University Ho Chi Minh700000 Viet Nam Faculty of Electrical and Electronic Engineering Phenikaa University Hanoi12116 Viet Nam A&A Green Phoenix Group JSC No.167 Hoang Ngan Trung Hoa Cau Giay Hanoi11313 Viet Nam

Purpose: Ultrasound viscoelastography is a quantitative and convenient imaging model that images soft tissues based on shear waves’ propagation. Thanks to the interaction between ultrasonic waves and shear waves, the physical features of soft tissues (elasticity, viscosity) are expressed by complex shear modulus (CSM) parameters, useful information for diagnosing tissue medical states. Therefore, this paper presented a new efficient approach to estimate CSM and reconstruct the viscoelastic images. Methods: This paper develops a two-dimensional shear wave propagation model applying finite difference time domain (FDTD) technique and then employing a proposed bandpass filter to reduce measured particle velocity noise of shear wave;finally, algebraic Helmholtz inversion (Ahi) is utilized to estimate the CSM directly. As already known, excitation frequency for ultrasound viscoelastography system is a single one. In the previous research, the low pass filter is used to reduce frequency vibrations and measurement noise as well as fluctuations at low frequency;however, it is unable to completely eliminate noise since the measured particle velocity is affected by high-frequency noise and fluctuations in low frequency. Therefore, the enhanced FDTD-Ahi algorithm applies a bandpass filter, which retains only the frequency band containing the excitation frequency, promising to eliminate low- and high-frequency noise. Moreover, we proposed to cut the transient part of the filtered signal to avoid affecting Ahi step and thus to improve the CSM estimation. Results: The simulation scenarios have proved the effectiveness of the enhanced FDTD-Ahi algorithm. The proposed method’s normalized error is significantly reduced compared to the traditional manner using a low pass filter. We reconstructed two-dimensional images of elasticity and viscosity in the area of interest. The estimated quality near the excitation source is quite good. Still, far away from the excitation source, it is of

关键词： Viscosity

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Accurate RNA 3D structure prediction using a language model-based deep learning approach

arXiv

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arXiv 2022年

作者： Shen, Tao Hu, Zhihang Sun, Siqi Liu, Di Wong, Felix Wang, Jiuming Chen, Jiayang Wang, Yixuan Hong, Liang Xiao, Jin Zheng, Liangzhen Krishnamoorthi, Tejas King, Irwin Wang, Sheng Yin, Peng Collins, James J. Li, Yu Department of Computer Science and Engineering The Chinese University of Hong Kong Hong Kong Zelixir Biotech Shanghai China Research Institute of Intelligent Complex Systems Fudan University Shanghai China Wyss Institute for Biologically Inspired Engineering Harvard University BostonMA United States Department of Systems Biology Harvard Medical School BostonMA United States Institute for Medical Engineering and Science Massachusetts Institute of Technology CambridgeMA United States Broad Institute of MIT and Harvard CambridgeMA United States Synthetic Biology Center Massachusetts Institute of Technology CambridgeMA United States Integrated Biosciences Redwood CityCA United States OneAIM Ltd. Hong Kong Shanghai AI Laboratory Shanghai China The CUHK Shenzhen Research Institute Hi-Tech Park Shenzhen Nanshan China Shenzhen Institute of Advanced Technology Guangdong Shenzhen China School of Molecular Sciences Center for Molecular Design and Biomimetics the Biodesign Institute Arizona State University TempeAZ United States School of Computing and Augmented Intelligence Arizona State University TempeAZ United States

Accurate prediction of RNA three-dimensional (3D) structure remains an unsolved challenge. Determining RNA 3D structures is crucial for understanding their functions and informing RNA-targeting drug development and synthetic biology design. The structural flexibility of RNA, which leads to scarcity of experimentally determined data, complicates computational prediction efforts. Here, we present RhoFold+, an RNA language model-based deep learning method that accurately predicts 3D structures of single-chain RNAs from sequences. By integrating an RNA language model pre-trained on ∼23.7 million RNA sequences and leveraging techniques to address data scarcity, RhoFold+ offers a fully automated end-to-end pipeline for RNA 3D structure prediction. Retrospective evaluations on RNA-Puzzles and CASP15 natural RNA targets demonstrate RhoFold+’s superiority over existing methods, including human expert groups. Its efficacy and generalizability are further validated through cross-family and cross-type assessments, as well as time-censored benchmarks. Additionally, RhoFold+ predicts RNA secondary structures and inter-helical angles, providing empirically verifiable features that broaden its applicability to RNA structure and function studies. Copyright © 2022, The Authors. All rights reserved.

关键词： Deep learning

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Human β-defensin 3 gene modification promotes the osteogenic differentiation of human periodontal ligament cells and bone repair in periodontitis

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International Journal of Oral Science 2020年第2期12卷 162-171页

作者： Lingjun Li Han Jiang Rixin Chen Jing Zhou Yin Xiao Yangheng Zhang Fuhua Yan Nanjing Stomatological Hospital Medical School of Nanjing UniversityNanjingChina People’s Hospital of Suzhou National New&Hi-Tech Industrial Development Zone SuzhouChina The Affiliated Stomatological Hospital Zhejiang University School of MedicineKey Laboratory of Oral Biomedical Research of Zhejiang ProvinceZhejiang University School of StomatologyHangzhouChina Institute of Health and Biomedical Innovation&the Australia-China Centre for Tissue Engineering and Regenerative Medicine Queensland University of TechnologyBrisbaneAustralia

Efforts to control inflammation and achieve better tissue repair in the treatment of periodontitis have been ongoing for ***β-defensin 3,a broad-spectrum antimicrobial peptide has been proven to have a variety of biological functions in periodontitis;however,relatively few reports have addressed the effects of human periodontal ligament cells(h PDLCs)on osteogenic *** this study,we evaluated the osteogenic effects of h PDLCs with an adenoviral vector encoding humanβ-defensin 3 in an inflammatory *** humanβ-defensin 3 gene-modified rat periodontal ligament cells were transplanted into rats with experimental periodontitis to observe their effects on periodontal bone *** found that the humanβ-defensin 3 gene-modified h PDLCs presented with high levels of osteogenesis-related gene expression and calcium ***,the p38 MAPK pathway was activated in this *** vivo,humanβ-defensin 3 gene-transfected rat PDLCs promoted bone repair in SD rats with periodontitis,and the p38 mitogen-activated protein kinase(MAPK)pathway might also have been *** findings demonstrate that humanβ-defensin 3 accelerates osteogenesis and that humanβ-defensin 3 gene modification may offer a potential approach to promote bone repair in patients with periodontitis.

关键词： period periodontal ligament

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The origin of human pathogenicity and biological interactions in Chaetothyriales

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Fungal Diversity 2024年第2期125卷 99-120页

作者： Yu Quan Shuwen Deng Francesc X.Prenafeta-Boldủ Veronika E.Mayer Lucia Muggia Agnese Cometto Vania A.Vicente Nickolas Menezes da Silva Maria Eduarda Grisolia Yinggai Song Sarah A.Ahmed Xueke Niu Bruna Jacomel Favoreto de Souza Lima Peiying Feng Roxana G.Vitale Marcus Teixeira Montarop Sudhadham Conceicao Pedrozo e Silva de Azevedo Anamelia Bocca Gerhard Haase Laura Selbmann Dongmei Shi Yingqian Kang Sybren de Hoog Key Laboratory of Environmental Pollution Monitoring and Disease Control Ministry of Education of Guizhou&Key Laboratory of Medical Microbiology and ParasitologySchool of Basic Medical SciencesGuizhou Medical UniversityGuiyangChina Centre of Expertise in Mycology of Radboud University Medical Centre/Canisius Wilhelmina Hospital NijmegenThe Netherlands Department of Medical Microbiology People’s Hospital of Suzhou National New&Hi-Tech Industrial Development ZoneSuzhouChina Program of Sustainability in Biosystems Institute of Agrifood Research and TechnologyCaldes de MontbuiSpain Department of Botany and Biodiversity Research Faculty of Life SciencesUniversity of ViennaViennaAustria Department of Life Sciences University of TriesteTriesteItaly Postgraduate Program in Microbiology Parasitology and PathologyBiological SciencesDepartment of Basic PathologyFederal University of ParanàCuritibaBrazil Engineering Bioprocess and Biotechnology Post-Graduation Program Department of Bioprocess Engineering and BiotechnologyFederal University of ParanaCuritibaBrazil Research Center for Medical Mycology Peking UniversityBeijingChina Foundation Atlas of Clinical Fungi HilversumThe Netherlands Third Affiliated Hospital Sun Yat-sen UniversityGuangzhouChina Consejo Nacional de Investigaciones Científicas y Tecnológicas/Hospital JM Ramos Mejía Sector MicologíaBuenos AiresArgentina Faculdade de Medicina Universidade de BrasíliaBrasíliaBrazil Department of Biology Suan Sunandha Rajabhat UniversityBangkokThailand Nucleus of Tropical Pathology and Social Medicine Department of PathologyFederal University of MaranhaoSão LuísMaranhãoBrazil Institute of Biological Sciences University of BrasíliaBrasiliaDFBrazil Labordiagnostisches Zentrum RWTH Aachen University HospitalAachenGermany Department of Ecological and Biological Sciences University of TusciaViterboItaly Department of Dermatology&Laboratory of Medical Mycology Jining No.1 People’s HospitalJiningShandongChina

Fungi in the order Chaetothyriales are renowned for their ability to cause human ***,they are not regarded as primary pathogens,but rather as opportunists with a natural habitat in the *** is a major trend in the order,but quite different from black yeasts in Capnodiales which focus on endurance,an important additional parameter is advancing toxin *** the ancestral ecology of rock colonization,the association with metabolite-producing lichens is ***-association,dealing with pheromones and repellents,is another mainstay in the *** phylogenetically derived family,Herpotrichiellaceae,shows dual ecology in monoaromatic hydrocarbon assimilation and the ability to cause disease in humans and cold-blooded *** this study,data on ecology,phylog-eny,and genomics were collected and analyzed in order to support this hypothesis on the evolutionary route of the species of *** the ribosomal tree with that of enzymes involved in toluene degradation,a significant expansion of cytochromes is observed and the toluene catabolism is found to be complete in some of the *** might enhance human systemic ***,since most species have to be traumatically inoculated in order to cause disease,their invasive potential is categorized as *** in chromoblastomycosis,true pathogenicity might be *** criterion would be the possible escape of agents of vertebrate disease from the host,enabling dispersal of adapted genotypes to subsequent generations.

关键词： Black yeast Ecology Phylogeny Genomics Evolution Chromoblastomycosis

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First-Principles Study of the Structural, Electronic, Dynamical, and Mechanical Properties of Pd-Nb Binary Systems

SSRN

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SSRN 2022年

作者： Liu, Peitao Liu, Mingfeng Wang, Lei Wang, Jiantao Zhu, Heyu Ma, Hui Wei, Yan Zhang, Aimin Chen, Li Chen, Xing-Qiu School of Materials Science and Engineering University of Science and Technology of China Shenyang110016 China Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang110016 China Sino-Precious Metals Holding Co. Ltd. 988 Keji Road Hi-tech Development Zone Kunming650106 China State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metal Kunming650106 China

We study the structural, electronic, dynamical, and mechanical properties of the whole Pd-Nb binary systems based on first-principles density functional theory calculations. Using the variable-composition evolutionary structure search algorithm, we predict eight new ground-state phases (cI32-Pd15Nb, oC24-Pd11Nb, mC18-Pd8Nb, oF60-Pd13Nb2, mC24-Pd5Nb, oF12-PdNb2, oC16-PdNb7, and oC32-PdNb15) and eight metastable phases (hP9-Pd8Nb, mC12-Pd5Nb, oC12-Pd5Nb, tP2-PdNb, oC20-PdNb, tI10-Pd2Nb3, oC20-Pd2Nb3, and mP10-PdNb4) that have not yet been experimentally or theoretically reported. All the predicted phases are dynamically stable in the absence of soft phonon modes in calculated phonon dispersions. The elastic properties calculations show that all these compounds are also mechanically stable. We find that the Young's modulus, bulk modulus as well as shear modulus exhibit similar convex variations with respect to the Nb concentrations, while the Poisson's ratio shows the opposite trend. These trends are found to be highly correlated with the atomic arrangement in crystal structures and associated chemical bondings. Among all the predicted PdxNbycompounds, tI8-Pd3Nb exhibits the largest elastic moduli due to its relatively close-packed structure induced near homogeneous chemical bondings. The electronic structure calculations reveal that all predicted Pd-Nb compounds are metallic with complex band structures. Interestingly, the oI6-Pd2Nb compound hosts nontrivial Dirac nodal lines around the Fermi energy and exhibits topological nodal line surface states on the (001) plane. This work provides the first complete survey on the whole Pd-Nb systems, paving the way to exploring potential candidates for Pd-based eletrocatalysts. © 2022, The Authors. All rights reserved.

关键词： Intermetallics

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First-Principles Study of the Structural, Electronic, Dynamical, and Mechanical Properties of Pd-Nb Binary Systems

SSRN

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SSRN 2022年

We study the structural, electronic, dynamical, and mechanical properties of the whole Pd-Nb binary systems based on first-principles density functional theory calculations. Using the variable-composition evolutionary structure search algorithm, we predict eight new ground-state phases (cI32-Pd 15 Nb, oC24-Pd 11 Nb, mC18-Pd 8 Nb, oF60-Pd 13 Nb 2 , mC24-Pd 5 Nb, oF12-PdNb 2 , oC16-PdNb 7 , and oC32-PdNb 15 ) and eight metastable phases (hP9-Pd 8 Nb, mC12-Pd 5 Nb, oC12-Pd 5 Nb, tP2-PdNb, oC20-PdNb, tI10-Pd 2 Nb 3 , oC20-Pd 2 Nb 3 , and mP10-PdNb 4 ) that have not yet been experimentally or theoretically reported. All the predicted phases are dynamically stable in the absence of soft phonon modes in calculated phonon dispersions. The elastic properties calculations show that all these compounds are also mechanically stable. We find that the Young's modulus, bulk modulus as well as shear modulus exhibit similar convex variations with respect to the Nb concentrations, while the Poisson's ratio shows the opposite trend. These trends are found to be highly correlated with the atomic arrangement in crystal structures and associated chemical bondings. Among all the predicted Pd x Nb y compounds, tI8-Pd 3 Nb exhibits the largest elastic moduli due to its relatively close-packed structure induced near homogeneous chemical bondings. The electronic structure calculations reveal that all predicted Pd-Nb compounds are metallic with complex band structures. Interestingly, the oI6-Pd 2 Nb compound hosts nontrivial Dirac nodal lines around the Fermi energy and exhibits topological nodal line surface states on the (001) plane. This work provides the first complete survey on the whole Pd-Nb systems, paving the way to exploring potential candidates for Pd-based eletrocatalysts. © 2022, The Authors. All rights reserved.

关键词： Niobium alloys

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