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Monitoring paddy rice phenology using time series MODIS data over Jiangxi Province,China

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International Journal of Agricultural and Biological Engineering 2014年第6期7卷 28-36,I0003页

作者： Li Shihua Xiao Jiangtao Ni Ping Zhang Jing Wang Hongshu Wang Jingxian School of Resources and Environment University of Electronic Science and Technology of ChinaChengdu611731China The National Remote sensing center of China Beijing100036China

Paddy rice is one of the most important crops in the *** estimation and monitoring of paddy rice phenology is necessary for management and yield *** sensed time-series data are essential for estimation of crop phenology stages across large ***,the paddy rice phenological stages(i.e.,transplanting,tillering,heading,and harvesting)were detected in Jiangxi Province,China.A comparison study was conducted using ground observation data from 10 agricultural meteorological stations,collected between 2006 and *** phenological stages were detected using Moderate Resolution Imaging Spectroradiometer(MODIS)time-series enhanced vegetation index(EVI)***-Golay filter and wavelet transform were used to reduce the noise in the time-series EVI data and reconstruct the smoothed EVI time-series *** phenological stages of double-cropping rice were detected using the characteristics of the smoothed EVI *** root mean square errors(RMSEs)for each stage were ±10 days around the ground observation *** results suggest that Savitzky-Golay filter and wavelet transform are promising approaches for reconstructing high-quality EVI time-series ***,the phenological stages of double-cropping rice could be detected using time-series MODIS EVI data smoothed by Savitzky-Golay filter and wavelet transform.

关键词： remote sensing phenology paddy rice time series MODIS EVI growth monitoring Savitzky-Golay filter wavelet transform

Cascaded Random Raman fiber Laser With Low RIN and Wide Wavelength Tunability

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Photonic Sensors 2022年第4期12卷 36-44页

作者： Bing HAN Shisheng DONG Yang LIU Zinan WANG Key Laboratory of optical fiber sensing&Communications(Ministry of Education) University of Electronic Science and Technology of ChinaChengdu 611731China

Cascaded random Raman fiber lasers(CRRFLs)have been used as a new platform for designing high power and wavelength-agile laser ***,CRRFL pumped by ytterbium-doped random fiber laser(YRFL)has shown both high power output and low relative intensity noise(RIN).Here,by using a wavelength-and bandwidth-tunable point reflector in YRFL,we experimentally investigate the impacts of YRFL on the spectral and RIN properties of the *** verify that the bandwidth of the point reflector in YRFL determines the bandwidth and temporal stability of *** is found that with an increase in the bandwidth of the point reflector in YRFL from 0.2 nm to 1.4 nm,CRRFL with higher spectral purity and lower RIN can be achieved due to better temporal stability of YRFL *** broadening the point reflector’s bandwidth to 1.4 nm,the lasing power,spectral purity,and RIN of the 4th-order random lasing at 1349 nm can reach 3.03 W,96.34%,and–115.19 dB/Hz,*** comparison,the spectral purity and RIN of the 4th-order random lasing with the point reflector’s bandwidth of 0.2 nm are only 91.20%and–107.99 dB/Hz,***,we realize a wavelength widely tunable CRRFL pumped by a wavelength-tunable *** work provides a new platform for the development of ideal distributed Raman amplification pump sources based on CRRFLs with both good temporal stability and wide wavelength tunability,which is of great importance in applications of optical fiber communication and distributed sensing.

关键词： Random fiber laser Raman fiber laser relative intensity noise distributed Raman amplification

Coarse-to-fine waterlogging probability assessment based on remote sensing image and social media data

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Geo-Spatial Information Science 2021年第2期24卷 279-301,I0007页

作者： Lei Xu Ailong Ma State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhanChina Collaborative Innovation center of Geospatial technology Wuhan UniversityWuhanChina

Urban waterlogging probability assessment is critical to emergency response and *** sensing(RS)is a rich and reliable data source for waterlogging monitoring and evaluation through water body extraction derived from the pre-and post-disaster RS ***,RS images are usually limited to the revisit cycle and cloud *** solve this issue,social media data have been considered as another data source which are immune to the weather such as clouds and can reflect the real-time public response for disaster,which leads itself a compensation for RS *** this paper,we propose a coarse-to-fine waterlogging probability assessment framework based on multisource data including real-time social media data,near real-time RS image and historical geographic information,in which a coarse waterlogging probability map is refined by using the real-time information extracted from social media data to acquire a more accurate waterlogging ***,to generate a coarse waterlogging probability map,the historical inundated areas are derived from Digital Elevation Model(DEM)and historical waterlogging points,then the geographic features are extracted from DEM and RS image,which will be input to a Random Forest(RF)classifier to estimate the likelihood of ***,the real-time waterlogging-related information is extracted from social media data,where the Convolutional Neural Network(CNN)model is applied to exploit the semantic information of sentences by capturing the local and position-invariant features using convolution ***,fine waterlogging probability map scan be generated based on morphological method,in which real-time waterlogging-related social media data are taken as isolated highlight point and used to refine the coarse waterlogging probability map by a gray dilation pattern considering the distance-decay *** 2016 Wuhan waterlogging and 2018 Chengdu water-logging are taken as case studies to demonstrate the effective

关键词： Remote sensing social media urban waterlogging data fusion

Direct Correlation among Telomere Length, Cellular Aging, and Rejuvenation Effects of Honey Child Powder

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Journal of Biosciences and Medicines 2024年第7期12卷 55-70页

作者： Naofumi Shiomi Keiko Watanabe Yuki Fujiwara Takae Yamasaki Hideto Matsuyama Research center for Membrane and Film technology Kobe University Kobe Japan School of Human Sciences Kobe College Nishinomiya Japan Department of Chemical Science and Engineering Kobe University Kobe Japan

Purpose: Telomere length (TL) is an indicator of age;however, hormonal influences complicate individual aging. It remains unclear whether TL shortening is a direct factor in both individual and cellular aging. Therefore, we examined the direct relationship between TL and cellular senescence at the cellular level. Methods: Telomerase activity, TL, and gene expression were measured in cultured human lung-, fetal-, and skin-derived fibroblasts, human skin keratinocytes, and telomerase reverse transcriptase (TERT) gene-immortalized cells using detection kits, Cawthon’s method, and reverse transcription-quantitative polymerase chain reaction, respectively. Novel substances that elongate telomeres were screened to confirm cell rejuvenation effects. Results: Long-term cell culture of TIG-1-20 normal human fibroblasts resulted in TL shortening, decreased division rate, and senescence progression, whereas in OUMS-36T-2 cells, TL elongation via TERT gene transfer increased the division rate, reduced endoplasmic reticulum stress, and upregulated genes associated with young individuals, indicating that cellular rejuvenation occurs via TL elongation. In addition, a honey child powder (HCP) extract was found through screening, and the HCP extract strongly suppressed the menin gene, resulting in increased telomerase activity and extended cell lifespan. Upon addition of the HCP extract to skin fibroblasts, gene expression of moisturizing components, including collagen, hyaluronic acid, and elastin, increased, and exhibited a rejuvenating effect with an increase in elastin amount. Conclusions: TL elongation or shortening is involved in cell proliferation rate and cellular aging, and TL elongation rejuvenates cells. In addition, HCP extract has a rejuvenating effect on cells and is expected to be a rejuvenating compound.

关键词： Telomere Cellular Aging Telomerase Reverse Transcriptase Gene Rejuvenation Honey Child Powder

Streamlined process for effective and strand-selective mitochondrial base editing using mitoBEs

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Biophysics Reports 2024年第4期10卷 191-200页

作者： Xiaoxue Zhang Zongyi Yi Wei Tang Wensheng Wei Changping Laboratory Biomedical Pioneering Innovation center Peking-Tsinghua Center for Life Sciences Peking University Genome Editing Research Center State Key Laboratory of Protein and Plant Gene Research School of Life Sciences Peking University Academy for Advanced Interdisciplinary Studies Peking University

Mitochondrial base editing tools hold great promise for the investigation and treatment of mitochondrial diseases. Mitochondrial DNA base editors(mitoBEs) integrate a programmable transcriptionactivator-like effector(TALE) protein with single-stranded DNA deaminase(TadA8e-V106W,APOBEC1, etc.) and nickase(MutH, ***6I(C), etc.) to achieve heightened precision and efficiency in mitochondrial base editing. This innovative mitochondrial base editing tool exhibits a number of advantages, including strand-selectivity for editing, high efficiency, and the capacity to perform diverse types of base editing on the mitochondrial genome by employing various deaminases. In this context,we provide a detailed experimental protocol for mitoBEs to assist others in achieving proficient mitochondrial base editing.

关键词： Mitochondrial DNA base editors (mitoBEs) Transcription-activator-like effector (TALE) Deaminase Nickase

Fate and Behavior of Tetracycline Resistance Genes in Activated Carbon Adsorption

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Journal of Water Resource and Protection 2024年第1期16卷 1-16页

作者： Sri Anggreini Alma Rizky Aurellya Wenqing Li Fusheng Li Graduate School of Engineering Gifu University Gifu Japan Graduate School of Natural Science and technology Gifu University Gifu Japan River Basin Research center Gifu University Gifu Japan

The accessibility of tetracycline resistance gene (tetG) into the pores of activated carbon (AC), as well as the impact of the pore size distribution (PSD) of AC on the uptake capacity of tetG, were investigated using eight types of AC (four coal-based and four wood-based). AC showed the capability to admit tetG and the average reduction of tetG for coal-based and wood-based ACs at the AC dose of 1 g·L-1 was 3.12 log and 3.65 log, respectively. The uptake kinetic analysis showed that the uptake of the gene followed the pseudo-second-order kinetics reaction, and the uptake rate constant for the coal-based and wood-based ACs was in the range of 5.97 × 10-12 - 4.64 × 10-9 and 7.02 × 10-11 - 1.59 × 10-8 copies·mg-1·min-1, respectively. The uptake capacity analysis by fitting the obtained experiment data with the Freundlich isotherm model indicated that the uptake constant (KF) values were 1.71 × 103 - 8.00 × 109 (copies·g-1)1-1/n for coal-based ACs and 7.00 × 108 - 3.00 × 1010 (copies·g-1)1-1/n for wood-based ones. In addition, the correlation analysis between KF values and pore volume as well as pore surface at different pore size regions of ACs showed that relatively higher positive correlation was found for pores of 50 - 100 Å, suggesting ACs with more pores in this size region can uptake more tetG. The findings of this study are valuable as reference for optimizing the adsorption process regarding antibiotic resistance-related concerns in drinking water treatment.

关键词： Antibiotic Resistance Genes Adsorption Activated Carbon Drinking Water Treatment

Strain-specific effect of Streptococcus thermophilus consumption on host physiology

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Food Science and Human Wellness 2024年第5期13卷 2876-2888页

作者： Peng Yu Yang Jiang Yuqi Pan Min Guo Bo Yang Xiaoming Liu Jianxin Zhao Hao Zhang Wei Chen State Key Laboratory of Food Science and technology Jiangnan UniversityWuxi 214122China School of Food Science and technology Jiangnan UniversityWuxi 214122China International Joint Research Laboratory for Pharmabiotics&Antibiotic Resistance Jiangnan UniversityWuxi 214122China Wuxi Translational Medicine Research center and Jiangsu Translational Medicine Research Institute Wuxi Branch Wuxi 214122China National Engineering Research Centre for Functional Food Wuxi 214122China

Streptococcus thermophilus is one of the most prevalent species in stool samples of westernized populations due to continuous exposure to fermented dairy ***,few studies have explored the effect on host physiology by multiple *** strains and considered the inter-strain differences in regulating *** the present study,we investigated how four *** strains influenced the gut microbiota,mucin changes,and host metabolism after 28 days of intervention in conventional *** results indicated that the consumption of *** affected the host with strain *** four *** strains,DYNDL13-4 and DQHXNQ38M61,especially DQHXNQ38M61,had more effect on host physiology by modulating gut microbiota and host metabolism than LMD9 and *** of strains DYNDL13-4 and DQHXNQ38M61 resulted in more remarkable changes in amino acid metabolism and lipid metabolism than that of strains LMD9 and 4M6,which may be related to the elevation of intestinal Bifidobacterium by DYNDL13-4 and *** enriched Coriobacteriaceae UCG-002,Rikenellaceae RC9 gut group,and Lactobacillus only in the DQHXNQ38M61 group,had a close relationship with the prominent effect of DQHXNQ38M61 on regulating amino acid and lipid *** addition,DQHXNQ38M61 had a strong influence on degrading colonic mucin fucose by decreasedα-fucosidase activity in feces,and improving mucin sulfation by upregulated Gal3ST2 *** genomic analysis revealed that the four *** strains belonged to different branches in the phylogenetic tree,and DYNDL13-4 and DQHXNQ38M61 had more genes involved in carbohydrate metabolism,amino acid metabolism,membrane transport,and signal transduction,which may confer the capacity of nutrient utilization and gastrointestinal adaptation of the strains and be associated with their strong regulation in *** study provides valuable information for understanding the regulation of host metabolism aft

关键词： Streptococcus thermophilus Intestinal microbiota Metabolome Comparative genomics

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Spatial Optimization and Reconstruction of Old Communities under the Background of Aging

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Journal of Landscape Research 2024年第2期16卷 51-53,60页

作者： LI Yiwen LI Daoyong HE Qilin School of Architecture and Art North China University of TechnologyBeijing 100144China Planning and Comprehensive Affairs center of Beijing Economic and Technological Development Zone Beijing 100176China

As aging becomes increasingly serious,how to make the life of the elderly more convenient and comfortable has become one of the social problems to be solved *** residential areas are one of spaces where the elderly *** this paper,the prominent problems in the community space of existing old residential areas that are not conducive to the life of the elderly were analyzed,and corresponding countermeasures to transform the community space were put *** is hoped that public space can play its due value and make old residential areas glow with new vitality.

关键词： Aging adaptability Community public space Elderly care community Space transformation

Improvement of glucose metabolism in middle-aged mice on a high-fat diet by whole-grain highland barley is related to low methionine levels

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Food Science and Human Wellness 2024年第5期13卷 2906-2916页

作者： Chuanxing Feng Yueting Ge Bowen Li Xiangrong Cheng Xue Tang Jianjin Zhu Yuge Jiang Yonghui Shi Guowei Le center for Food Nutrition and Functional Food Engineering School of Food Science and TechnologyJiangnan UniversityWuxi 214122China State Key Laboratory of Food Science and technology Jiangnan UniversityWuxi 214122China College of Life Science xinyang Normal Universityxinyang 464000China Key Laboratory of xin'an Medicine Ministry of EducationAnhui Province Key Laboratory of R&D of Chinese MedicineAnhui University of Chinese MedicineHefei 230038China

Methionine restriction(MR)is an effective dietary strategy to regulate energy metabolism and alleviate oxidative stress and inflammation in the body,especially in the middle-aged and elderly ***,the high methionine content of meat products makes this dietary strategy impossible to combine with protein supplementation and *** barley(HB),a low-methionine cereal,not only provides the body with protein but also has improved glucose metabolism and antioxidant and anti-inflammatory ***,this study evaluated the feasibility of HB as a source of methionine-restricted dietary protein and the potential ***-aged C57BL/6J mice were fed a control diet(CON),a high-fat diet(HFD),a whole-grain HB high-fat diet(HBHF),or a HBHF+methionine diet(HBHFmet)for 25 *** results showed that the HBHF could keep the body weight,fasting glucose,insulin,homeostasis model assessment of insulin resistance(HOMA-IR),blood lipids,inflammation,and oxidative stress of HFD mice at normal *** with the HFD groups,HBHF inhibited pancreatic cell apoptosis and improved insulin secretion while improving hepatic and skeletal muscle glucose ***,these efficacies were attenuated in HBHFmet group *** findings suggest that HBHF has an MR strategy.

关键词： Methionine restriction strategy Highland barley Insulin secretion Glucose metabolism

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