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Multiple vehicle signals separation based on particle filtering in wireless sensor network

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Journal of Systems Engineering and Electronics 2008年第3期19卷 440-446页

作者： Yah Kai huang qi wei Jianming Liu Haitao Shanghai Inst. of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 P. R. China

A novel statistical method based on particle filtering is presented for multiple vehicle acoustic signals separation problem in wireless sensor network. The particle filtering method is able to deal with non-Gaussian and nonlinear models and non-stationary sources. Using some instantaneously mixed observations of several real-world vehicle acoustic signals, the proposed statistical method is compared with a conventional non-stationary Blind Source Separation algorithm and attractive simulation results are achieved. Moreover, considering the natural convenience to transmit particles between sensor nodes, the algorithm based on particle filtering is believed to have potential to enable the task of multiple vehicles recognition collaboratively performed by sensor nodes in distributed wireless sensor network.

关键词： wireless sensor network Bayesian source separation particle filtering sequential Monte Carlo.

新工科时代“有机化学”教学创新改革的探索与实践

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教育教学论坛 2024年第15期 121-124页

作者：洪碧琼黄伟奇闽江学院材料与化工学院福建福州350108 福建农林大学计算机与信息学院福建福州350002

在新时代发展理念下,国家大力推行新工科建设,而高校工科类专业“有机化学”的教学缺乏应用型特色,也未体现新工科的理念和要求,出现人才培养与社会需求脱节和供不对求的局面,甚至造成学生对本专业不自信。作为工科专业基础课的“有机... 详细信息

在新时代发展理念下,国家大力推行新工科建设,而高校工科类专业“有机化学”的教学缺乏应用型特色,也未体现新工科的理念和要求,出现人才培养与社会需求脱节和供不对求的局面,甚至造成学生对本专业不自信。作为工科专业基础课的“有机化学”必须改革创新,探索适应新时代发展理念的教学方式方法以顺应新工科建设要求。从教学内容的优化与教学资源的建构、教学手段多样化并智能化、教学设计“以生为本”并体现个性化、课程思政的巧妙融入、评价体系多元化等五个方面进行改革与创新。

关键词：新工科应用型教学改革有机化学

Effect of N Fertilizers on Root Growth and Endogenous Hormones in Strawberry

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Pedosphere 2009年第1期19卷 86-95页

作者： WANG Bo LAI Tao huang qi-wei YANG Xing-Ming SHEN qi-Rong College of Resources and Environmental Sciences Nanjing Agricultural University Nanjing 210095 （China） Faculty of Horticulture Soochow University Suzhou 215006 （China）

Endogenous hormones play an important role in the growth and development of roots. The objective of this research was to study the effect of four types of N fertilizers on the root growth of strawberry (Fragaria ananassa Duchesne) and the endogenous enzymes of indole-3-acetic acid (IAA), abscisic acid (ABA), and isopentenyl adenosine (iPA) in its roots and leaves using enzyme-linked immunosorbent assay. Application of all types of N fertilizers significantly depressed (P ≤ 0.05) root growth at 20 d after transplanting. Application of organic-inorganic fertilizer (OIF) as basal fertilizer had a significant negative effect (P ≤ 0.05) on root growth. The application of OIF and urea lowered the lateral root frequency in strawberry plants at 60 d (P ≤ 0.05) compared with the application of two organic fertilizers (OFA and OFB) and the control (CK). With the fertilizer treatments, there were the same concentrations of IAA and ABA in both roots and leaves at the initial growth stage (20 d), lower levels of IAA and ABA at the later stage (60 d), and higher iPA levels at all seedling stages as compared to those of CK. Thus, changes in the concentrations of endogenous phytohormones in strawberry plants could be responsible for the morphological changes of roots due to fertilization.

关键词： endogenous hormone organic and inorganic N fertilizers root growth strawberry

Humic-Like Substances from Different Compost Extracts Could Significantly Promote Cucumber Growth

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Pedosphere 2012年第6期22卷 815-824页

作者： XU Da-Bing WANG qiu-Jun WU Yun-Cheng YU Guang-Hui SHEN qi-Rong huang qi-wei Jiangsu Provincial Key Lab for Organic Solid Waste Utilization Nanjing Agricultural UniversityNanjing 210095(China)

The effects of direct extracts of compost (DEC), aerated fermentation extracts of compost (AFEC) and non-aerated fermentation extracts of compost (NAFEC) on cucumber growth and the action mechanisms were evaluated based on the structure and activity analysis of humic-like substances. AFEC increased cucumber growth most significantly, followed by DEC and NAFEC, which was insignificant compared to the control treatment. Humic-like substances from compost extracts played an important role in promoting cucumber growth. Application of humic-like substances stimulated auxin-like activity and increased chlorophyll content and nitrogen accumulation in plants. The positive auxin-like activity of humic-like substances could be attributed to the relative distribution of special carbon groups, such as those with a large amount of peptidic and carbohydratic groups or with a low content of phenolic groups. In conclusion, the best growth promotion by application of AFEC was mainly attributed to the humic-like substances in the AFEC.

关键词： auxin-like activity 13C nuclear magnetic resonance chemical structure elemental composition analysis

N Accumulation and Translocation in Four Japonica Rice Cultivars at Different N Rates

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Pedosphere 2007年第6期17卷 792-800页

作者： ZHANG Yao-Hong FAN Jian-Bo ZHANG Ya-Li WANG Dong-Sheng huang qi-wei SHEN qi-Rong College of Resources and Environmental Sciences Nanjing Agricultural University Nanjing 210095 （China）

Developing high-yielding rice(Oryza sativa L.)cultivars depends on having a better understanding of nitrogen(N) accumulation and translocation to the ear during the reproductive *** experiments were carried out to evaluate the genetic variation for N accumulation and translocation in different Japonica rice cultivars at different N rates and to identify any relationship to grain yield in southeast *** Japonica cultivars with similar agronomic characteristics were grown at two experimental sites in 2004 with three N rates of 0,60,and 180 kg N ha^(-1).Dry weights and N contents of rice plants were measured at tillering,initiation,anthesis,and *** yields exhibited significant differences (P<0.05)among the cultivars and N application *** N rates improved N uptake at anthesis and maturity in all four cultivars(P<0.05).N translocation from vegetative organs to the grains increased with enhanced N rates (P<0.05).N translocation to the grains ranged from 9 to 64 kg N ha^(-1)and N-translocation efficiency from 33% to 68%. Grain yield was linear to N uptake at anthesis(r^2=0.78^(**))and N translocation(r^2=0.67^(**)).Thus,cultivars with a high N uptake at anthesis,low residual N in the straw at maturity,and appropriate low N fertilizer supply in southeast China should efficiently increase N-recovery rate while maintaining grain yield and soil fertility.

关键词： rain yield Japonica rice cultivar N accumulation N application rate N translocation

Suppression of Fusarium Wilt of Banana with Application of Bio-Organic Fertilizers

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Pedosphere 2014年第5期24卷 613-624页

作者： ZHANG Nan HE Xin ZHANG Juan W.RAZA YANG Xing-Ming RUAN Yun-Ze SHEN qi-Rong huang qi-wei National Engineering Research Center for Organic-Based Fertilizers Nanjing Agricultural University Shandong Product Quality Inspection Research Institute College of Agronomy Hainan University

Fusarium wilt is one of the most serious diseases of banana plants caused by soil-borne pathogen Fusarium oxysporum ***. cubense(FOC). In this study a pot experiment was conducted to evaluate the effects of different bio-organic fertilizers(BIOs) on Fusarium wilt of banana, including the investigations of disease incidence, chitinase and β-1,3-glucanase activities of banana plants, and FOC populations as well as soil rhizosphere microbial community. Five fertilization treatments were considered, including chemical fertilizer containing the same N, P and K concentrations as the BIO(control), and matured compost mixed with antagonists Paenibacillus polymyxa SQR-21 and Trichoderma harzianum T37(BIO1), Bacillus amyloliquefaciens N6(BIO2), Bacillus subtilis N11(BIO3), and the combination of N6 and N11(BIO4). The results indicated that the application of BIOs significantly decreased the incidence rate of Fusarium wilt by up to 80% compared with the control. BIOs also significantly promoted plant growth, and increased chitinase andβ-1,3-glucanase activities by 55%–65% and 17.3%–120.1%, respectively, in the banana roots. The population of FOC in the rhizosphere soil was decreased significantly to about 104 colony forming units g-1with treatment of BIOs. Serial dilution plating and denaturing gradient gel electrophoresis analysis revealed that the application of BIOs increased the densities of bacteria and actinomycetes but decreased the number of fungi in the rhizosphere soil. In general, the application of BIOs revealed a great potential for the control of Fusarium wilt disease of banana plants.

关键词： biocontrol denaturing gradient gel electrophoresis fungal disease manure compost

Validation of a Chinese translation of the identification of functional ankle instability questionnaire

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Chinese Medical Journal 2020年第18期133卷 2261-2262页

作者： Hao Guo wei-qi huang Xi-Jiang Lin Bo-Tao Chen Can-Jun Zeng Department of Foot and Ankle Surgery The Third Affiliated Hospital of Southern Medical UniversityGuangzhouGuangdong 510630China

To the Editor:Ankle sprains account for about 40%of all sports injuries,and 20%to 33%of ankle sprains will cause ankle instability.[1]Functional ankle instability(FAI)does not yet have an accurate and widely accepted measurable definition,although many surgeons have treated it for years when it is combined with anterior talofibular ligament injury,calcaneofibular ligament injury,or *** China,some unnecessary ligament-repairing surgeries may be performed just because of imaging evidence of ligament injury and possible(but not sure)FAI,leading to some unsatisfactory *** self-reported questionnaires have been developed to help define FAI but no validated Chinese version existed,although China has the highest number of patients with *** International Ankle Consortium has recommended the Ankle Instability Instrument,the Cumberland Ankle Instability Tool,and the Identification of Functional Ankle Instability(IdFAI)questionnaire,which is based on the first two questionnaires,to assess FAI.[2]The IdFAI has the highest accuracy of the three questionnaires.[3]The original English version of IdFAI has been translated into many languages,and the Japanese,Korean,Brazilian,and Persian versions have been *** developed a Chinese version of the IdFAI(IdFAI-C)and determined its validity by assessing its discriminate validity,internal consistency,accuracy,and test-retest reliability.

关键词： validity ankle questionnaire

Integrated multi-omics analysis reveals liver metabolic reprogramming by fish iridovirus and antiviral function of alpha-linolenic acid

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Zoological Research 2024年第3期45卷 520-534页

作者： Lin Liu Ya Zhang Meng-Di Yuan Dong-Miao Xiao wei-Hua Xu qi Zheng qi-wei qin You-Hua huang Xiao-Hong huang College of Marine Sciences South China Agricultural UniversityGuangdong Laboratory for Lingnan Modern AgricultureGuangzhouGuangdong 510642China Nansha-South China Agricultural University Fishery Research Institute GuangzhouGuangdong 511464China Southern Marine Science and Engineering Guangdong Laboratory ZhuhaiGuangdong 519082China

Iridovirus poses a substantial threat to global aquaculture due to its high mortality rate;however,the molecular mechanisms underpinning its pathogenesis are not well ***,a multi-omics approach was applied to groupers infected with Singapore grouper iridovirus(SGIV),focusing on the roles of key *** showed that SGIV induced obvious histopathological damage and changes in metabolic enzymes within the ***,SGIV significantly reduced the contents of lipid droplets,triglycerides,cholesterol,and *** analysis indicated that the altered metabolites were enriched in 19 pathways,with a notable down-regulation of lipid metabolites such as glycerophosphates and alpha-linolenic acid(ALA),consistent with disturbed lipid homeostasis in the *** of transcriptomic and metabolomic data revealed that the top enriched pathways were related to cell growth and death and nucleotide,carbohydrate,amino acid,and lipid metabolism,supporting the conclusion that SGIV infection induced liver metabolic *** integrative transcriptomic and proteomic analysis indicated that SGIV infection activated crucial molecular events in a phagosome-immune depression-metabolism dysregulation-necrosis signaling *** note,integrative multi-omics analysis demonstrated the consumption of ALA and linoleic acid(LA)metabolites,and the accumulation of L-glutamic acid(GA),accompanied by alterations in immune,inflammation,and cell death-related *** experimental data showed that ALA,but not GA,suppressed SGIV replication by activating antioxidant and anti-inflammatory responses in the ***,these findings provide a comprehensive resource for understanding host response dynamics during fish iridovirus infection and highlight the antiviral potential of ALA in the prevention and treatment of iridoviral diseases.

关键词： Iridovirus Liver damage Metabolic reprogramming SGIV Alpha-linolenic acid Antiinflammatory

Nanodiamond/Ti_(3)C_(2) MXene-coated quartz crystal microbalance humidity sensor with high sensitivity and high quality factor

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Rare Metals 2024年第6期43卷 2719-2729页

作者： Yao Yao qiao Chen Yan-qi Li Xian-He huang wei-wei Ling Zhe-MiaoXie Jia-qiWang Chang-Ming Chen College of Communication Engineering Chengdu University of Information TechnologyChengdu 610225China School of Automation Chongqing University of Posts and TelecommunicationsChongqing 400065China School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 611731China Advanced Micro-/Nano-Devices Lab Department of Systems Design EngineeringUniversity of WaterlooWaterlooON N2L 3GlCanada

To address the challenge of achieving both high sensitivity and a high quality factor in quartz crystal microbalance(QCM)humidity sensors,a nanodiamond(ND)/Ti_(3)C_(2)MXene composite-coated QCM humidity sensor was *** material characteristics of ND,Ti_(3)C_(2)MXene,and ND/Ti_(3)C_(2)MXene composite were analyzed by transmission electron microscopy(TEM)and Fourier transform infrared(FTIR)*** experimental results demonstrated that the hydrophilic ND nanoparticles coated on Ti_(3)C_(2) MXene nanosheet prevented the self-stacking of Ti_(3)C_(2)MXene and enhanced the sensitivity of Ti_(3)C_(2) MXene-based QCM humidity ***,the high mechanical modulus of Ti_(3)C_(2) MXene material helped ND/Ti_(3)C_(2)MXene composite-coated QCM humidity sensor to achieve a high quality factor(>20,000).ND/Ti_(3)C_(2)MXene compositecoated QCM humidity sensor exhibited a sensitivity of 82.45 Hz/%RH,a humidity hysteresis of 1.1%RH,fast response/recovery times,acceptable repeatability,and good stability from 11.3%RH to 97.3%*** response mechanism of ND/Ti_(3)C_(2) MXene composite-coated QCM humidity sensor was analyzed in combination with a bi-exponential kinetic adsorption ***,the potential application of ND/Ti_(3)C_(2)MXene composite-coated QCM humidity sensor was demonstrated through its frequency response to wooden blocks with different moisture contents.

关键词： Humidity sensor Quartz crystal microbalance Nanodiamond Ti_(3)C_(2)MXene High quality factor