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摘要: The presence of toxic mercury (II) in water is an ever-growing problem on earth that has various harmful effect on human health and aquatic living organisms. Therefore, detection of mercury (II) in water is very much crucial and several researches are going on in this topic. Metal-organic frameworks (MOFs) are considered as an effective device for sensing of toxic heavy metal ions in water. The tunable functionalities with large surface area of highly semiconducting MOFs enhance its activity tow关键词: Binary metal-organic framework composite (NH;2;-UiO-66/g-CNQDs);Graphitic carbon nitride quantum dots (g-CNQDs);Fluorescence sensing;Mercury (II) detection;Aqueous medium
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摘要: The abandonment of rural areas is an important environmental and socio-economic issue in Europe, threatening the stability and profitability of agricultural production. The identification and quantification of abandoned land is key for temporal and spatial monitoring of the process and for applying alternative management measures. Italy is one of the most important European countries for the production of high quality olive oil, accounting for a large slice of the current certificated production关键词: NDVI;Random Forest;Progressive Web App;Remote sensing
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摘要: In a world that requires sustainable agricultural practices, quantitative plant-by-plant and field status monitoring can be advantageous to all farmers by optimizing their farm management. Autonomous robots, sensing technologies, and automated data analysis will play a key role. In the present article, we discuss three critical aspects of the incorporation of field robots in agriculture: 1) the main design specifications and economic aspects for Commercial Agricultural Robots (CARs) in terms of 关键词: Autonomous agricultural vehicles;Smart farming;Digital agriculture;Proximal sensing;Business model;Robotics market
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摘要: Yield prediction of citrus provides critical information before harvest to growers and allied industry to predict the resources required for workers, storage, and transportation of the harvest. In this study, three machine learning (ML) based models were developed for tree-level citrus yield prediction: (i) Model-1 utilized UAV imagery; (ii) Model-2 utilized UAV imagery and ground-based fruit detection and counts from images taken from one side of the tree; and (iii) Model-3 utilized UAV imagery关键词: Artificial intelligence;Precision agriculture;Remote sensing, UAV
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摘要: Wireless Communication is a system for communicating information from one point to other, without utilizing any connections like wire, cable, or other physical medium. Cognitive Radio (CR) based systems and networks are a revolutionary new perception in wireless communications. Spectrum sensing is a vital task of CR to avert destructive intrusion with licensed primary or main users and discover the accessible spectrum for the efficient utilization of the spectrum. Centralized Cooperative Spectru关键词: Cohnitive radio network; collaborative spectrum sensing; sample covariance matrix; pietra-ricci index detector; cooperative spectrum sensing; generalized likelihood ratio test; maximum-to-minimum eigenvalue detection; volume-based detector number
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摘要: In recent decades, several optimization algorithms have been developed for selecting the most energy efficient clusters in order to save power during transmission to a shorter distance while restricting the Primary Users (PUs) interference. The Cognitive Radio (CR) system is based on the Adaptive Swarm Distributed Intelligent based Clustering algorithm (ASDIC) that shows better spectrum sensing among group of multiusers in terms of sensing error, power saving, and convergence time. In this resea关键词: Adaptive swarm distributed clustering; cognitive radio; clustering algorithm; distributed swarm intelligent; energy efficient distributed cluster-based sensing; multi modal optimization
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Book Chapter
摘要: Continuous technological advances have permitted design of miniaturized hardware capable of performing various sensory functions for health care purposes. These sensors may be worn on the skin or implanted within the body. Moreover, incorporation of wireless technology within their design may permit for integration with commercial “smart” technology including smartphones and smartwatches. Clinically viable wearable and implantable sensors may therefore permit continuous or as-needed physiologic 关键词: biosensors;electrocorticography;electroencephalography;electrophysiology;intracranial pressure monitoring;lab on a chip;smart technology;wearable technology
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Book Chapter
摘要: Oil extraction from surface seepages dates back to around 450 BC. Mine shafts were also utilized in early exploration and development. The first well drilled in the Western world was at Oil Creek, Pennsylvania in 1859. Cable tool drilling was developed in the early nineteenth century, and the average depth for cable tool wells was around 1000 m. Cable tool drilling was then largely replaced by rotary drilling. This enabled wells to be drilled with greater safety and to much greater depths. Curre关键词: Cable-tool drilling;Rotary drilling;Formation evaluation;Wireline logs;Oil;gas;and water saturations;Porosity and Permeability;Geophysical methods;Gravity;Magnetics;Seismic (2-D;3-D;4-D);Subsurface geology;Cross sections;Mapping;Remote sensing;Visualization;Radar imaging;Multispectral scanning
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摘要: Design, fabricate and evaluate all solid state wearable sensor systems that can monitor ion concentrations in human sweat to provide real time health analysis and disease diagnosis capabilities.,A human health monitoring system includes disposable customized flexible electrode array and a compact signal transmission processing electronic unit.,Patterned rGO (reduced graphene oxide) layers can replace traditional metal electrodes for the fabrication of free standing all solid film sensors to prov关键词: Wearable sweat sensor;RGO electrode;Flexible electrodes;Integrated sensor system;Electrochemical ion sensing
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摘要: Accurate agricultural yield prediction is a fundamental tool for sustainable agricultural planning and to ensure food security in regions critically affected by climate change and extreme weather events. Existing regression-based crop yield estimation approaches typically rely on a specific set of predictor variables, but have not been compared systematically. This paper demonstrates and compares the utilization and the combinatorial use of three different sets of object-based predictors for sug关键词: Crop yield estimation;Phenology metrics;Vegetation index time series;Regression models;Remote sensing;Crop monitoring;Sugarcane yield
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Journal
摘要: The opportunity of using of Unmanned Aerial Vehicles (UAVs) for applying harvest aids in ultra-low volumes (ULV) in cotton is an interesting perspective to overcome common problems associated with traditional ground-based applications like crop mechanical damage, yield losses and soil compaction. Moreover, as cotton harvest aids induce a prominent effect on the appearance of the crop, their efficacy can be conceptualized in wide scale remote sensing observations to provide general insights on th关键词: Cotton;Drones;Spraying;Defoliars;ULV;Yield;Remote sensing
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Journal
摘要: Insufficient osseointegration and biofilm-associated bacterial infection are important challenges for clinical application of titanium (Ti)-based implants. Here, we constructed mesoporous polydopamine (MPDA) nanoparticles (NPs) loaded with luteolin (LUT, a quorum sensing inhibitor), which were further coated with the shell of calcium phosphate (CaP) to construct MPDA-LUT@CaP nanosystem. Then, MPDA-LUT@CaP NPs were immobilized on the surface of Ti implants. Under acidic environment of bacterial b关键词: Titanium implant;Biofilm infection;Osseointegration;Photothermal therapy;Quorum sensing
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Journal
摘要: Background(#br)Trees and forests in drylands help mitigate the challenges through provision of economic products and vital environmental services such as habitat for biodiversity, prevention of erosion and desertification, regulation of water, microclimate, and soil fertility. The condition and changes in dry forests can be assessed by using ecological indicators able to quantify spatial and temporal changes in vegetation. One of the ways to determine the condition of the forest is to study the 关键词: Bos primigenius taurus;Dry forests;Equines;Exotic and domestic ungulates;Lama guanicoe;Prosopis flexuosa;Remote sensing;Saplings;Seed dispersal
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Journal
摘要: The distributed temperature sensing (DTS) is used to overcome the defects of traditional production profile testing technology and realize the real-time and accurate temperature monitoring of complex underground reservoirs. However, the temperature response characteristics of the production profile for multilayered gas wells have not been studied clearly, which leads to technical problems of the production profile interpretation of such gas wells monitored by DTS. Therefore, considering the infl关键词: multilayered gas reservoirs;distributed temperature sensing;temperature response;production profile;transient thermal effect;natural gas technology;oil/gas reservoirs
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Journal
摘要: The localized surface plasmon resonance (LSPR) phenomenon of the noble metal nanoparticles is responsible for their strongly coloured colloidal solutions. The colorimetric or colour-based detection generally relies on the aggregation of the metal nanoparticles in the presence of the analyte. In this review, the sensing of numerous classes of biological molecules such as amino acids, proteins, DNA bases, neurotransmitters and vitamins have been discussed using gold nanoparticles (GNPs) - based pr关键词: Gold nanoparticles;Colorimetric sensing;Aggregation;Chiral recognition;Protein discrimination;Sensor array
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Journal
摘要: In the present work, a deep learning-based network called LeNet is applied for accurate grassland map production from Sentinel-2 data for the Greater Sydney region, Australia. First, we apply the technique to the base date Sentinel-2 data (non-seasonal) to make the vegetation maps. Then, we combine short time-series (seasonal) data and enhanced vegetation index (EVI) information to the base date imagery to improve the classification results and generate high-resolution grassland maps. The propos关键词: Grassland mapping;Deep learning;Sentinel-2 image;Remote sensing
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Journal
摘要: Herein, we attempt to study the synthesis process of 3-mercaptopropionic acid (3-MPA) capped gold nanoparticles (Au-MPA) and to optimize the preparation of colorimetric sensor based on the localized surface plasmon (LSP) phenomenon compared to the citrate stabilized gold nanoparticles (Au-Citrate). Both Au-Citrate and Au-MPA were prepared using the reduction method. In our case, the product of Au-MPA shows red-wine color of solution with a plasmonic peak at 527关键词: 3-mercaptopropionic acid;chemical reduction;colorimetric sensing;gold nanoparticles;localized surface plasmon
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Journal
摘要: Bacterial quorum sensing (QS) is a well-known behavior for bacterial communication and plays an important role in various bacterial biological functions. Several approaches have been developed to interrupt the QS mechanism in bacterial pathogens. This study developed a novel, high-throughput screening method combined with phage peptide display libraries and a QS biosensor system (PDQBS) to identify quorum-sensing inhibitors (QSIs). We screened 11 hit peptide candidates for QSI activity, which in关键词: Quorum sensing inhibitors;Phage display;QSI reporter;A. hydrophila;Phage display with a QS biosensor system;QSI;CPP;QS;AI-2;AHL;AIP;BSA;PDQSR;3D
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Journal
摘要: Currently, the effect of different pretreatments (i.e., radio frequency (RF), explosion puffing (EP), microwave (MW) and oven heating (OH)) on the flavor characteristics of peanut butter is unclear. Consequently, this study identified volatile aroma and non-volatile taste using HS-SPME/GC–MS combined with the use of an electronic nose, electronic tongue, and sniffing. 53 volatile compounds in four peanut butters were identified, MW-treated samples exhibited the most aroma-active compounds (43), 关键词: OH;RF;EP;MW;HS-SPME;GC-MS-O;PCA;Peanut butter;Aroma identification;Sensory evaluation;Electronic sensing;Electronic tongue;Heating pretreatment
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Journal
摘要: Anthocyanin from red cabbage is an important biomolecule suitable for pH sensing due to its oxidoreduction potential that leads to a color change at various pH conditions. The pH-sensitive anthocyanin compound was extracted from red cabbage (1785 ± 235 mg/L) and encapsulated with gelatin as the wall material at the nanoscale (350 nm) through electrospraying. By using a simultaneous electrospraying and spinning process at 20 kV, nanoencapsulated anthocyanin was immobilized on ethyl cellulose (EC)关键词: Acetic acid, PubChem CID: 176;Chloroform, PubChem CID: 6212;Lactic acid, PubChem CID: 612;Sodium hydroxide, PubChem CID: 14798;Potassium chloride, PubChem CID: 4873;Sodium acetate, PubChem CID: 517045;Ethyl cellulose, PubChem CID: 24832091;Electrospinning;Electrospraying;Anthocyanin;Milk spoilage;pH sensing
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Journal
摘要: Fluorescence quantitative analysis methods are extensively used in biomedicine inspection, petrochemical industry, environmental monitoring, and many other fields in the past decades. When the analyte is composed of multiple compositions, the accuracy of the conventional method declines significantly due to the fluorescence spectral crosstalk. In this research, the interactions between the light and the multiple compositions are comprehensively analyzed. The concepts of the quenching due to mutu关键词: Fluorescence spectroscopy;Quantitative analysis method;Sensing mechanisms and principles;Crosstalk Fluorescence Spectroscopy Analysis (CFSA);Algorithm
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Journal
摘要: Massive distributed clean energy takes power electronic equipment as the grid​ access connector, which brings serious harmonic pollutions. To monitor the power quality in the massive distributed power systems, this paper proposes a real-time harmonic monitoring and analysis framework based on Internet of Things (IoT) and dynamic compressed sensing. In sensing node, the power quality signal is continuously sampled and compressed with sliding time window. In edge node, a homotopy optimization with关键词: IoT;Distributed power system;Power quality;Harmonic monitoring;Dynamic compressed sensing;Homotopy optimization
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Journal
摘要: The exploitation of wind energy potential has been strongly limited in the Mediterranean area due to its critical bathymetry. However, the spread of new deep offshore technologies such as floating turbines could drastically change the actual scenario, allowing wind energy to be exploited even in areas with critical bathymetric conditions. In such framework, remote sensing technologies could significantly help the development of offshore wind farms and may represent a valid resource for better pl关键词: Renewable energy;Offshore wind energy;Remote sensing;Sentinel-1;OCN products
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Journal
Xiang Mingshun;Deng Qiuchi;Duan Linsen;Yang Jin;Wang Chunjian;Liu Jiashuo;Liu Mengli;
Alexandria Engineering JournalVolume 61, Issue 11, 2022, PP 8691-8702
摘要: The earthquake and its secondary geological disasters have some long-term effects on vegetation recovery, and the spatiotemporal differentiation of vegetation coverage in earthquake-stricken areas are often not valued by researchers. Beichuan County in Sichuan Province is the worst-hit area during Wenchuan earthquake, tracking the vegetation coverage in this disaster area can provide feedback for post-earthquake ecological restoration. Based on remote sensing (RS) and Geographic information syst关键词: Vegetation coverage;Vegetation index;Earthquake;Remote sensing;Eco-environment
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Journal
摘要: Thermoelectric generator (TEG) has a great potential for powering wireless Internet of Things (IoT) sensing systems and wearable electronic devices because of its capability of harvesting thermal energy into usable electricity. Herein, this work reports a high-performance ultra-flexible TEG based on a silicone rubber sheet and electrodeposited thermoelectric material. The fabricated flexible TEG shows a high output voltage of 1V under a temperature difference ΔT of 60 °C. Its maximum output powe关键词: Flexible thermoelectric generator;Electrodeposited thermoelectric materials;Silicone rubber sheet;Wireless self-powered sensing systems
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Journal
Yan Shu;Zhang Shu-Zhe;Xie Wan-Feng;Gai Ling-Yun;Yuan Hui-Min;Zhang Ding;Zhang He;Liu Xuhai;Yang Woochul;Chi Zong-Tao;
Sensors and Actuators ReportsVolume 4, Issue , 2022, PP
摘要: By combining hydrothermal and calcination processes, In2O3/ZnSnO3 cubic crystallite composites have been successfully synthesized. The crystal structure and morphology of the as-synthesized In2O3/ZnSnO3 have been characterized employing X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and X-Ray photoelectron spectroscopy (XPS). In terms of better gas response, fast response, repeatability, and a lower operating temperature, the In2O3/ZnSnO3 cubic crystallites display关键词: In;2;O;3;/ZnSnO;3;hydrothermal method;nanocubes;gas sensing;ethanol
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Journal
摘要: Abnormal motor speed caused by overload, eccentric load and bearing wear is one of the main fault manifestations of heavy-duty motor. On-line monitoring the speed in real time is of great significance for fault early warning and improving motor operating life. In this paper, a self-powered motor speed sensor based on a coaxial integrated triboelectric–electromagnetic hybrid nanogenerator is proposed. A modular magnet coupling is designed to synchronously transfer energy from the motor shaft to n关键词: Hybrid nanogenerator;Rotation speed monitoring;Rotating low-pair mechanism;Magnetic coupling drive;Synergistic sensing
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摘要: In recent years, low-cost air pollution technologies have gained increasing interest and, have been studied widely by the scientific community. Thus, these new sensing technologies must provide reliable data with good precision and accuracy. Accordingly, this review aimed to evaluate and compare the low-cost sensing technology against other instruments used for comparison by various studies from the scientific literature to monitor indoor air quality in different indoor environments. After exclu关键词: Indoor air quality;Air quality sensing technology;Low-cost sensor;Device;Research-grade instruments;Reference instruments
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Journal
Li Panle;He Xiaohui;Cheng Xijie;Qiao Mengjia;Song Dingjun;Chen Mingyang;Zhou Tao;Li Jiamian;Guo Xiaoyu;Hu Shaokai;Tian Zhihui;
Expert Systems With ApplicationsVolume 205, Issue , 2022, PP
摘要: In recent years, volunteered geographic information (VGI) is widely used to train deep convolutional neural networks (DCNNs) for high-resolution remote sensing image classification. However, noisy labels are often included in the training samples generated by VGI, which inevitably affects the performance of DCNNs. To solve this problem, the negative effect of noisy labels on remote sensing image classification by DCNNs is analyzed. Then, an improved categorical cross-entropy (ICCE) is proposed t关键词: Volunteered geographic information;Remote sensing image classification;Deep convolutional neural networks;Noisy label;Improved categorical cross-entropy;Sample weighting scheme
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摘要: An all fiber current sensor based on magnetic fluid (MF) is proposed. The sensing structure is composed of a piece of no-core fiber (NCF) spliced between two sections of single mode fiber. The MF is used as the cladding of NCF. The sensing principle is based on the cladding mode interference. In order to improve the sensitivity, a bent-melt taper NCF is proposed as the sensing probe for the first time to increase the evanescent field. As a comparison, the sensitivities of optical fiber current s关键词: Current sensing;Macro-bending;Magnetic fluid;Optical fiber sensor
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