Contents
2022
Volume: 42 Issue 10
51 Article(s)

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Research Articles
Reflection Polarization Spectral Characteristics of High Performance Coating Material La2Zr2O7
Dong-dong SHI, Zhao-bin CAO, Yan-hua HUAN, Yan-chun GONG, Wen-yuan WU, and Jun YANG
Rare earth zirconate (RE2Zr2O7, RE is rare earth element) materials have the advantages of low thermal conductivity, stable high-temperature phase structure, corrosion resistance and relatively low price, etc. In recent years, it has been widely and deeply applied in the fields of the thermal barrier coating, environme
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 2995 (2022)
Laser-Induced Growth Device and Optical Properties of ZnO Microcrystals
Yi-min LIAO, Yin-zhou YAN, Qiang WANG, Li-xue YANG, Yong-man PAN, Cheng XING, and Yi-jian JIANG
ZnO is third-generation semiconductors which can be used as the carrier of ultraviolet photoluminescence and multi-resonance mode laser. In recent years, ZnO microcrystals prepared by optical vapor supersaturation precipitation (OVSP) have shown important advantages in photocatalysis, efficient multi-color light source
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3000 (2022)
Emission Spectroscopy Diagnosis of Air Gliding Arc Plasma Under Atmospheric Pressure Condition
Kun YANG, Lei CHEN, Fan-chong CHENG, Huan PEI, Gui-ming LIU, Bao-huai WANG, and Wen ZENG
To understand the effect of argon on the air gliding arc plasma, an air gliding arc plasma was generated at a discharge frequency of 10 kHz and an atmospheric pressure with qAir=15 L·min-1 to study the effect of Ar volume flow on air-Ar gliding arc discharge. And then focused on the analysis of the active particle
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3006 (2022)
Terahertz Transmission Characteristics of Magneto-Fluidic Carrier Liquid Based on Microfluidic Technology
Xin-yuan ZHAO, Guo-yang WANG, Qing-hao MENG, Feng-xuan ZHANG, Si-yu SHAO, Jing DING, Bo SU, and Cun-lin ZHANG
Terahertz (THz) refers to an electromagnetic wave with a frequency of 0.1~10 THz and a wavelength of 30~3 000 μm. Because the frequencies of vibration and rotation of many small molecules in nature are in the terahertz band, and the low electron energy characteristics of terahertz will not cause damage to the samples t
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3012 (2022)
The Mineralogical and Spectroscopic Characteristics of Phosphohedyphane From Chenzhou of Hunan Province
Gui-jun ZHU, Gan-zhen WANG, Jun PENG, Zong-ping TIAN, and Zhi-hua HOU
Recently a rare mineral of the Phosphohedyphane series was discovered in Hunan Province of China. It occurs in the clay adits above the Pb-Zn deposit, the Shizhuyuan, about 15 km east-south of Chenzhou. Determination of the mineral is difficult because its mineralogical and spectroscopic characteristics are similar to
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3017 (2022)
Investigation of the Spectral Characteristics of Laser-Induced Plasma for Non-Flat Samples
Bing-ying LEI, Bo-ping XU, Yi-shan WANG, Xiang-ping ZHU, Yi-xiang DUAN, Wei ZHAO, and Jie TANG
Laser-induced breakdown spectroscopy (LIBS), a fast and real-time tool for elemental analysis, has attracted great attention due to its broad applications in trace detection, geological environment monitoring, and other fields. The sample surface is one of the key environmental factors that affect the generation and ch
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3024 (2022)
Wavelength Selection Method of Algal Fluorescence Spectrum Based on Convex Point Extraction From Feature Region
Yong-bin ZHANG, Dan-dan ZHU, Ying CHEN, Zhe LIU, Wei-liang DUAN, and Shao-hua LI
The frequent occurrence of algal bloom seriously affects the Marine environment and human production activities, so it is very important to monitor the phytoplankton in water.3D fluorescence spectroscopy has been widely used in the analysis of algae community composition and the quantitative analysis of algae concentra
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3031 (2022)
Retrieval of Polydisperse Au-Ag Alloy Nanospheres by Spectral Extinction Method
Yu-xia ZHENG, Paerhatijiang TUERSUN, Remilai ABULAITI, Long CHENG, and Deng-pan MA
Noble metal nanoparticles have attracted much attention because of their local surface plasmon resonance properties, among which Au-Ag alloy nanoparticles have widespread investigated for their good structural stability, photothermal properties, and potential anticancer efficacy. The properties in many applications are
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3039 (2022)
Pressure-Induced Phase and Isomer Transition of Dicyandiamide
Yu-rui TAO, Hong-bo WANG, Hai-hua WANG, and Mi ZHOU
Due to the important application of cyanamide compounds in organic synthesis, the design and mechanism research of various cyanamide compounds have become a hot topic. The structure is the basis for functional material design. In order to explore the structural stability of a prototype of cyanamide compounds-dicyandiam
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3046 (2022)
Non-Destructive Detection and Visualization of Soybean Moisture Content Using Hyperspectral Technique
Cheng-qian JIN, Zhen GUO, Jing ZHANG, Cheng-ye MA, Xiao-han TANG, Nan ZHAO, and Xiang YIN
NIR Hyperspectral imaging technology was used to detect soybean moisture content rapidly and non-destructively and realized the visualization of soybean moisture content. A total of 96 soybean samples of hyperspectral images in the region of 900~2 500 nm were acquired, and the moisture content of each soybean sample wa
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3052 (2022)
Research on Discrimination Method of Absorption Peak in Terahertz Regime
Yu-qi CAO, Xu-sheng KANG, Piao-yun CHEN, Chen XIE, Jie YU, Ping-jie HUANG, Di-bo HOU, and Guang-xin ZHANG
Terahertz radiation bridges the gap between the microwave and optical regimes. It has unique properties such as fingerprint characteristics, non-destructive testing and transparency to various materials, which makes terahertz waves have significant scientific and technological potential in drug testing applications. Te
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3058 (2022)
Research on Spectral Characteristics and Photocatalytic Properties of Ball Milled TiO2
Dong-li QI, Jia CHENG, Hui SUN, Rui-xin ZHANG, Jian-yu SONG, Yan-li QIN, Hong-da LI, and Long-hai SHEN
In order to change the particle size of TiO2 and improve photocatalytic performance, TiO2 powder was treated by high-energy ball milling. The effects of ball milling time on the morphology, crystal structure, Raman spectrum, fluorescence spectrum and Photocatalytic Performance of the samples were studied; The relations
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3063 (2022)
Effect of Reaction Temperature on the Luminescence and Morphology of Na3ScF6:Yb/Er Nanocrystals
Li-gang ZHANG, Li-hong MA, Su-ling ZHAO, Zheng XU, Hai-jun YANG, Chen-pu LI, Ke WANG, Gui-xia LIU, Yong-qing BAI, and Wen-mei SHEN
At present, rare-earth ion-doped up-conversion luminescent materials (UCNP) have attracted widespread attention due to their massive potential of practical application in various fields like color display, biological imaging, solar cells, photodynamic therapy, solid-state lasers and more. Among various rare earth eleme
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3068 (2022)
Application of Gaussian Process Regression on the Quantitative Analysis of the Aging Condition of Insulating Paper by Near-Infrared Spectroscopy
Yuan LI, Wen-bo ZHANG, Xiao-lin CHEN, Han LI, and Guan-jun ZHANG
As the aging condition of the insulating papers determines the remaining lifetime of the oil-immersed transformers, a fast and effective aging assessment method for insulating paper is of great significance. As it is known, the degree of polymerization (DP) is the most direct parameter to characterize the aging conditi
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3073 (2022)
NIR Spectral Classification of Lettuce Using Principal Component Analysis Sort and Fuzzy Linear Discriminant Analysis
Bin WU, Jia-qi SHEN, Xin WANG, Xiao-hong WU, and Xiao-lei HOU
The storage time of lettuce is an important factor affecting the quality. The traditional way of detecting lettuce storage time mostly depends on artificial experience, so it lacks accuracy and reliability. This study aims to provide a fuzzy recognition model for spectral analysis of lettuce to identify the storage tim
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3079 (2022)
Phosphorus Species of Biochar Modified by Phosphoric Acid and Pyrophosphoric Acid Based on Spectral Analysis
Xu-yang WANG, Tao SUN, Xin-ping ZHU, Guang-mu TANG, Hong-tao JIA, and Wan-li XU
They can be applied to agriculture by changing the properties of biochar by phosphoric acid (H3PO4) and pyrophosphoric acid (H4P2O7) . It is helpful to revealing the bio-availability of P on its surface for identifying P occurrence form and binding mode of changed biochar for H3PO4 and H4P2O7. This paper adopts wheat s
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3084 (2022)
Research on Mine Water Inrush Identification Based on LIF and LSTM Neural Network
Peng-cheng YAN, Xiao-fei ZHANG, Song-hang SHANG, and Chao-yin ZHANG
Mine water disasteris a great threat to the safety production of a coal mine, so the rapid identification of mine water inrush source is of great significance to the early warning and post-disaster rescue work. Laser-induced fluorescence (LIF) technology has high speed, high efficiency and high sensitivity, which overc
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3091 (2022)
Non-Destructive Analysis of Yan'an Red Literature by FTIR Spectroscopy
Xu ZHANG, Yue-er YAN, Chun-mei ZHANG, Guang-hui YANG, and Yi TANG
Yan'an was the revolution center and strategic backside of the Communist Party of China and the cradle of revolution. Large numbers of red kinds of literature with historical, cultural, and educational significance were published in the Yan'an period, which recorded the grand development of the Communist Party
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3097 (2022)
Determination of Trace Tellurium Content in Steel by Hydride Generation Atomic Fluorescence Spectrometry
Pan LIU, Mi-fang DU, Zhi-ya LI, Ling-qing GAO, Hua-yun HAN, and Xin-yao ZHANG
Tellurium was a trace and harmful impurity element in iron and steel materials, which could reduce the mechanical and fatigue properties of materials by causing embrittlement and micro-cracks between crystals, and further endanger the service safety of marine equipment. Therefore, it was important to accurately and qui
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3103 (2022)
Optimization of Hardness Testing Model of High-Speed Iron Wheel by Laser-Induced Breakdown Spectroscopy
Ai-guo OUYANG, Tong-zheng LIN, Jun HU, Bin YU, and Yan-de LIU
China's railway has a long span, long operation time and great changes in operation environment, so the wear of wheels is large. In order to ensure the safe operation of high-speed railways, the surface hardness of high-speed train wheels has become an important parameter. The laser-induced breakdown spectroscopy (
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3109 (2022)
Spectral Analysis of the Effect of Organic Fertilizer Application on the Evolution of Organic Matter and Nitrogen in Farmaland
Hong-wei PAN, Wen-bin TONG, Hong-jun LEI, Guang YANG, and Li-li SHI
Organic fertilizer is an effective means to improve soil physical structure, enhance soil fertility and regulate nutrient balance. However, the effects of organic fertilizer application on the evolution of organic matter and nitrogen in farmland are still unclear. This paper studied the changes of TOC, DOC and inorgani
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3116 (2022)
Application of XRF and ICP-MS in Elements Content Determinations of Tieguanyin of Anxi and Hua'an County, Fujian Province
Xiao-hua GUO, Peng ZHAO, Ya-qing WU, Xue-ping TANG, Di GENG, and Lian-jin WENG
Anxi is the origin of Tieguanyin, with hundreds of millions of gross output values yearly. However, the price of Tieguanyin with different quality is uneven, and the counterfeit and shoddy phenomenon exists in the market. Anxi County and Hua'an County in Fujian Province are the main tea producing areas of Tieguanyi
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3124 (2022)
Matrix Separation-Determination of Rare Earth Oxides in Bauxite by Inductively Coupled Plasma-Atomic Emission Spectrometry
Xuan HU, Zi-hui CHENG, Shu-chao ZHANG, and Lei SHI
Extracting rare earth elements from hematite and developing high-value-added products can improve the comprehensive utilization of mineral resources, inject resources into enterprises and promote the development of high and new technology. The content of rare earth oxides in red mud is low (0.001 0 %~0.050%), and there
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3130 (2022)
Optimization of Seed Vigor Near-Infrared Detection by Coupling Mean Impact Value With Successive Projection Algorithm
Dong-feng YANG, Ai-chuan LI, Jin-ming LIU, Zheng-guang CHEN, Chuang SHI, and Jun HU
At present, near-infrared spectroscopy (NIRS) technology, can realize the rapid and non-destructive detection of seed vigor, but the vigor grade is generally less than 3, and the accuracy is not high.The contradiction between the increase of vigor level and model precision urgently needs to be solved in the near-infrar
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3135 (2022)
Identification and Restoration of Pseudo-Hydrolyzed Animal Protein of Lacteus Camelus Based on iPLS Model of Near-Infrared Measurement Spectrum of 6 mm Detection Plate
Ke-yan YUAN, Rong WANG, Xiang-xiang WANG, Li-ping XUE, and Li YU
Camel milk has gradually become a health care dairy product trusted by consumers because of its high nutrition and unique health care effects. However, due to the small output of camel milk and its high market value, this provides a profitable operating space for the hybridization of camel milk. With the further streng
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3143 (2022)
Research on Model Transfer Method of Organic Matter Content Estimation of Different Soils Using VNIR Spectroscopy
Guo-tian HU, Hui-wei SHANG, Rui-hong TAN, Xiang-hu XU, and Wei-dong PAN
Soil properties can be estimated accurately and quickly using visible and near-infrared (VNIR) diffuse reflectance spectroscopy. However, a key problem is the lack of universal nutrient content calibration models for different soils. To improve the universality of the soil organic matter (SOM) content calibration model
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3148 (2022)
Surface-Enhanced Raman Spectroscopy for Rapid Detection of Flunixin Meglumine Residues in Pork
Qian ZHANG, Xiang-hui DONG, Wei-rong YAO, Hang YU, and Yun-fei XIE
Flunixin meglumine (FM) is the only animal-specific non-steroidal anti-inflammatory drug, and it is the most commonly used anti-inflammatory and analgesic drug in veterinary clinics. In recent years, with the expansion of its application scope, its adverse reactions gradually appeared, and the residues of Flunixin megl
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3155 (2022)
Evaluation of Aging State of Wire Insulation Materials Based on Raman Spectroscopy
Yuan-chao FAN, Xiao-jing CHEN, Guang-zao HUANG, Lei-ming YUAN, Wen SHI, and Xi CHEN
An accurate evaluation of the aging state of wire insulation materials can be used to reduce fire incidences caused by wire insulation aging. In this study, Raman spectrum detection platform, self built aging equipment, accelerated temperature aging and accelerated UV aging tests were applied to evaluate the aging stat
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3161 (2022)
Determination of Heavy Metals and Rare Earth Elements in Bottom Ash of Waste Incineration by ICP-MS With High-Pressure Closed Digestion Method
Yilizhati JUMAHONG, Xi-juan TAN, Ting LIANG, and Yi ZHOU
In this work, nine heavy metals (Cr, Co, Ni, Cu, Zn, Zr, Cd, Ba and Pb) and sixteen rare earth elements in waste incineration were determined by ICP-MS combined with a high-pressure closed digestion method. The samples were completely decomposed by a mixture of acid of HF-HNO3-HCl (1:2:1) at 185 ℃ in high-pressure seal
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3168 (2022)
A Spike Removal Algorithm Based on Median Filter and Statistic for Raman Spectra
Rui-qian YE, Hao HE, Peng ZHENG, Meng-xi XU, and Lei WANG
Raman spectroscopy is a promising technique widely used in chemistry, biology, and physics. However, as the key part of the Raman spectrometer, the charge-coupled device is vulnerable to cosmic rays, resulting in a random narrow bandwidth and a high-intensity spikes. It will cause a significant reduction in signal cont
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3174 (2022)
Analysis on Characteristics of Temporal and Spatial Changes of Land Use in the Yiluo River Basin
Yu HUANG, Xin-ping LI, Na ZHAO, Xiao-li NIU, Dong-xue YIN, and Long QIN
Land use/cover change (LUCC) is one of global environmental change hot issues. The study of land-use changes in the Yiluo River Basin is significant to ecological protection and high-quality development of the Yellow River Basin. Based on long-term LandsatTM satellite remote sensing images, R language string diagram vi
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3180 (2022)
Technological Analysis of the Chess Pieces of Liubo Uncovered From the Warring States Tomb in Shaanxi Province
Xiao-juan HUANG, Jing YAN, Yang-li-zheng ZHANG, Li-qin WANG, and Wei-hong XU
Multiple methods composed of three-dimensional ultra-depth of field video microscope, laser Raman spectroscopy, X-ray fluorescence spectroscopy, Scanning electron microscopy with energy dispersive spectrometer, and colorimeter were applied to analyse the composition and microstructures of two kinds of Liubo chess piece
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3187 (2022)
Study on the Composition and Weathered Layer of a Silicate Bead Excavated From Ma-Jia-Yuan Cemetery M21
Ruo-su WANG, Feng SUN, and Yi-heng XIAN
In order to study the composition and weathering of the ancient artificial silicate bead, the super depth of field microscopy, scanning electron microscopy and energy spectrum(SEM-EDS) and micro-Raman were carried out on a silicate bead unearthed from the M21 graveyard in Ma-Jia-Yuan to obtaining its apparent appearanc
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3193 (2022)
Analysis and Research on Color Paints for Cliff Statues in Qionglai Caves
Lu WANG, Feng SUN, Ruo-su WANG, Ya-xin LIANG, Xue YAO, and Fan ZHAO
Sichuan Qionglai is located in the Chengdu Plain, where the largest scale and most concentrated stone carves were found in Chengdu. Due to the wet and semi-open storage environment, the statues were seriously damaged, and there is a lack of relevant scientific analysis and research. In this paper, 12 paint samples coll
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3198 (2022)
Analysis of Composition Differences of Fresh Radix Rehmanniae, Crude Radix Rehmanniae and Processed Radix Rehmanniae Using Infrared Spectroscopy
Jia-yi TIAN, Fang MA, and Ling-yu HAN
Based on the Attenuated Total internal Reflectance Fourier Transform Infrared spectroscopy (ATR-FTIR) to study the main differencesof chemical constituents in water extraction of fresh Radix Rehmanniae (RR), a decoction of crude RR and processed RR. In addition, ion chromatography was used to analyze the different comp
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3203 (2022)
Response of Dissolved Organic Matter Chemical Properties to Long-Term Different Fertilization in Latosol: Insight From Ultraviolet-Visible Spectroscopy
Xiong-wei ZHAO, Dong-ming WU, Qin-fen LI, Xu WANG, and Miao CHEN
Dissolved organic matter (DOM) is the most active part of the soil, which is important ecological environment significance. It can provide a basis for soil fertilization management to clarify the impact of different fertilization methods on the chemical properties of DOM. Based on different fertilization methods for fo
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3210 (2022)
Estimation of Potato Plant Nitrogen Content Using UAV Multi-Source Sensor Information
Acquiring the plant nitrogen content (PNC) information of crops quickly and accurately is the key to agricultural meticulous management and a research hotspot in the development of digital agriculture. In recent years, with the development of UAV and sensor technology, the use of various sensor information to monitor t
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3217 (2022)
Early Detection of Tomato Gray Mold Disease With Multi-Dimensional Random Forest Based on Hyperspectral Image
Rong-hua GAO, Lu FENG, Yue ZHANG, Ji-dong YUAN, Hua-rui WU, and Jing-qiu GU
Automatic early detection of plant diseases is essential for precision crop protection. This paper proposes an early diagnosis and detection method for tomato gray mold based on multi-dimensional spectral series (MDSS) and weighted random forest (WRF) algorithm. The aim was to establish a crop disease detection model b
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3226 (2022)
Analysis of DOC Component Structure of Black Soil Profile With Straw Deeply Bried and Based on Fluorescence Spectrum
En-jun KUANG, Feng-qin CHI, Jiu-ming ZHANG, Ming-gang XU, Colinet Gilles, Qing-rui SU, Xiao-yu HAO, Bao-guo ZHU, and [in Chinese]
Taking black soil as the research object, the difference in the three-dimensional fluorescence spectrum of soil dissolved organic carbon (DOC) after returning maize straw to the field at different soil depths (0~2, 3~10, 11~20, 21~30 and 31~40 cm) were analyzed. The change characteristics of humification degree of maiz
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3243 (2022)
Multi-Model Fusion Based on Fractional Differential Preprocessing and PCA-SRDA for the Origin Traceability of Red Fuji Apples
Hua HUANG, Meng-di NAN, Zheng-hao LI, Qiu-ying CHEN, Ting-jie LI, and Jun-xian GUO
Apple's origin traceability has important application value and practical significance. To explore new ways to trace apple's origin, taking 671 Samples of Red Fuji apples from Aksu of Xinjiang Province, Yantai of Shandong Province and Luochuan of Shanxi Province as the research objects. The near-infrared transm
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3249 (2022)
Estimation of Total Nitrogen Content in Fresh Tea Leaves Based on Wavelet Analysis
Tea is one of the most popular beverages globally, which is greatly affected by the content of nitrogen (N) in quality. Due to the complicated and time-consuming method for determining N content in fresh tea leaves by traditional chemical analysis, this paper proposes a means for N content prediction by hyperspectral t
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3253 (2022)
EC-PB Rules for Spectral Discrimination of Copper and Lead Pollution Elements in Corn Leaves
Bing WU, Ke-ming YANG, Wei GAO, Yan-ru LI, Qian-qian HAN, and Jian-hong ZHANG
Heavy metal pollution of agricultural products has attracted much attention along with the improved human quality of life. The heavy metal elements in crops will harm human health through the food chain, and different heavy metal elements have a large difference in toxicity to the human body. Therefore, it is crucial t
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3256 (2022)
Comparison of Forest Stock Volume Inversion Methods Coupled With Multiple Features——A Case Study of Forest in Yarlung Zangbo River Basin
Zi-zhao LI, Shou-dong BI, Yu-huan CUI, and Shuang HAO
Remote sensing monitoring of forest resources is one of the important application directions of remote sensing. Traditional measurement methods cost a lot of workforce and material resources. Scientific forest resource prediction can improve work efficiency and reduce measurement costs. Forest stock volume is an import
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3263 (2022)
Winter Wheat Total Nitrogen Content Estimation Based on UAV Hyperspectral Remote Sensing
Xin YANG, Zi-ran YUAN, Yin YE, Dao-zhong WANG, Ke-ke HUA, and Zhi-bin GUO
Nitrogen is one of the necessary nutrient elements for crops' growth and development, and crops' total nitrogen content is the main index to characterize its nitrogen status. Monitoring the spatial distribution of winter wheat total nitrogen content at the field scale can assist in accurate and quantitative top
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3269 (2022)
Improved YOLOv4 Remote Sensing Image Detection Method of Ground Objects Along Railway
Yang-ping WANG, Shu-mei HAN, Jing-yu YANG, Jian-wu DANG, and Zhan-ping ZHANG
In recent years, the rapid development of high-resolution remote sensing technology has provided an effective technical means for detecting ground objects along the railway. The regression-based one-stage target detection method YOLOv4 has the advantages of high detection accuracy and fast speed. However, when it is us
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3275 (2022)
Construction and Application of ReliefF-RFE Feature Selection Algorithm for Hyperspectral Image Classification
Hyperspectral images are characterized by continuous bands, high dimensionality, large data volume and strong correlation between adjacent bands, which can provide richer detailed information for feature classification. However, there is a lot of redundant information and noise in data, and the direct use of all band f
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3283 (2022)
Classification of Qianxi Tomatoes by Visible/Near Infrared Spectroscopy Combined With GMO-SVM
Fu ZHANG, Xin-yue WANG, Xia-hua CUI, Wei-hua CAO, Xiao-dong ZHANG, and Ya-kun ZHANG
Qianxi tomatoes are rich in nutrition, tasting sweet, sour and delicious, different varieties of qianxi tomato's flavor and nutritional value is obviously different, especially lycopene, citric acid, vitamin C and amino acid content varies greatly and the traditional artificial classification method of low efficien
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3291 (2022)
Recognition of Shellfish Based on Visible Spectrum and Convolutional Neural Network
Yang ZHANG, Jun YUE, Shi-xiang JIA, Zhen-bo LI, and Guo-rui SHENG
At present, Convolutional Neural Network (CNN) has made a breakthrough in species recognition. As an important part of the agricultural economy, shellfish has a wide variety of species with complex characteristics. Some of the shellfish are highly similar and the distribution of various samples is unbalanced, which cau
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3298 (2022)
Adaptive Matched Filter Detection for Leakage Gas Based on Multi-Frame Background
Yun-you HU, Liang XU, Han-yang XU, Xian-chun SHEN, Yong-feng SUN, Huan-yao XU, Ya-song DENG, Jian-guo LIU, and Wen-qing LIU
The infrared hyperspectral image data collected by the passive Fourier transform infrared (FTIR) scanning remote sensing imaging system has spatial and spectral information and can be used to identify, quantify and visualize toxic and harmful gases in the atmospheric environment. The system has high spectral resolution
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3307 (2022)
Measurement of Water Vapor Absorption in the Ultraviolet Band Using MAX-DOAS and Evaluation of Its Influence on DOAS Retrieval
Hong-mei REN, Ang LI, Zhao-kun HU, Pin-hua XIE, Jin XU, Ye-yuan HUANG, Xiao-mei LI, Hong-yan ZHONG, Hai-rong ZHANG, Xin TIAN, Bo REN, Jiang-yi ZHENG, Shuai WANG, and Wen-xuan CHAI
The absorption of atmospheric water vapor gradually weakens from the microwave to the visible band, but the absorption in the ultraviolet band has been ignored. Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) is a passive optical remote sensing technology that can simultaneously retrieve a variety of
Spectroscopy and Spectral Analysis
  • Publication Date: Oct. 01, 2022
  • Vol. 42, Issue 10, 3314 (2022)