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Optimisation of mobile intelligent terminal data pre-processing methods for crowd sensing
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作者 min huang Yuefan Zeng +1 位作者 Lina Chen Bo Sun 《CAAI Transactions on Intelligence Technology》 2018年第2期101-113,共13页
Sensor data pre-processing is an essential phase of crowd sensing application. Existing studies do not effectively solve the problem, and there still exist various sensor data pre-processing optimisation problems at t... Sensor data pre-processing is an essential phase of crowd sensing application. Existing studies do not effectively solve the problem, and there still exist various sensor data pre-processing optimisation problems at the acquisition end in crowd-sensing process. This study presents an improved sliding average method to achieve data compression and reduce the time complexity by using a dynamic window with improved processing time. Through adopting locally sorting and gradient change of the filter window, an improved extremum median filtering method is proposed to relieve the time- consuming problem when denoising high pixel images. A transmission strategy for optimisation is also proposed, in which only the demarcation points of each group of data and the data points with large differences when comparing with the demarcation points are recorded. This strategy reduces the storage pressure and the amount of data transmission of mobile terminal and improves the efficiency of data transmission. The experimental results show that their methods have higher speed and lower cost, and thus they can run better in crowd-sensing environment. 展开更多
关键词 传感器 数据预处理 智能技术 发展现状
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Blockage of the habenular nucleus can eliminate dyspnea induced by electrostimulation of the insular cortex 被引量:3
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作者 mingxian Li Jinghua Wang +4 位作者 min huang Weihong Lin min Wang Lei Yu Shao Wang 《Neural Regeneration Research》 SCIE CAS CSCD 2010年第13期1025-1029,共5页
BACKGROUND: The insular cortex and habenular nucleus may be a regulatory center for obstructive sleep apnea syndrome, and dyspnea may be caused by insular cortex activity. The insular cortex is a cortical representat... BACKGROUND: The insular cortex and habenular nucleus may be a regulatory center for obstructive sleep apnea syndrome, and dyspnea may be caused by insular cortex activity. The insular cortex is a cortical representation of obstructive sleep apnea syndrome. The habenular nucleus is a station for descending insular cortex activity. OBJECTIVE: Through actively stimulating the rat insular cortex, to observe rat respiratory movement, myoelectric activities of genioglossus, arterial partial pressure of oxygen, partial pressure of carbon dioxide and acidity-alkalinity, and to verify a hypothesis that the insular cortex is a superior-position regulation center, and the habenular nucleus is an inferior-position nervous nuclei of the insular cortex in patients with obstructive sleep apnea syndrome. DESIGN, TIME AND SETTING: The randomized, controlled animal study was performed at the Laboratory of Electrophysiology, Department of Physiology, Norman Bathune College of Medicine, Jilin University, China from September 2004 to June 2008. MATERIALS: We used L-glutamic acid (Dingguo Biological Product Research Center, Beijing, China), lidocaine hydrochloride (Seventh Pharmacy Co., Ltd., Wuxi, China), electric stimulator (Nihon Kohden, Japan), and an AVL-OPTI blood gas analyzer (AVL Scientific Co., Roswell, GA, USA). METHODS: The insular cortex of healthy adult Wistar rats underwent electrostimulation and L-glutamic acid stimulation to record changes in the myoelectric activity of genioglossus and respiratory movement. Some rats were injected with lidocaine to block the habenular nucleus before electrostimulation or L-glutamic acid stimulation. L-glutamic acid and lidocaine were injected by microelectrodes embedded in nuclear groups. MAIN OUTCOME MEASURES: Myoelectric activities of genioglossus, arterial partial pressure of oxygen, partial pressure of carbon dioxide and acidity-alkalinity were measured following apnea in rats undergoing electrostimulation in the insular cortex and following blockade of the habenular nucleus. RESULTS: Following electrostimulation and L-glutamic acid stimulation, rats developed apnea or respiratory rhythm disorders. Simultaneously, the amplitude of myoelectric activity of the genioglossus was reduced (P 〈 0.01 ), and the electromyogram integral was decreased (P 〈 0.01). Arterial blood gas analysis showed arterial blood acidosis, a decrease in pH (P 〈 0.05), and an increase in the negative value of alkaline reserve (P 〈 0.01). Lidocaine in the habenular nuclear blocked respiratory and other index changes after insular cortex stimulation. CONCLUSION: Dyspnea induced by stimulating the insular cortex may require the habenular nucleus. Paralysis of the habenular nucleus can completely eliminate insular cortex stimulation-induced dyspnea. 展开更多
关键词 DYSPNEA habenular nucleus insular cortex GENIOGLOSSUS neuroelectrophysiology neural regeneration
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Physiological Processes Contributing to the Difference in Grain Amino Acid Content Between Two Hybrid Rice(Oryza sativa L.)Cultivars 被引量:2
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作者 min huang Hengdong Zhang +2 位作者 Chunrong Zhao Guanghui Chen Yingbin Zou 《Phyton-International Journal of Experimental Botany》 2019年第2期101-107,共7页
Improving grain amino acid content of rice(Oryza sativa L.)is essential for the health of consumers.This study was conducted to identify the physiological processes that contribute to the higher grain amino acid conte... Improving grain amino acid content of rice(Oryza sativa L.)is essential for the health of consumers.This study was conducted to identify the physiological processes that contribute to the higher grain amino acid content in hybrid rice cultivar Lingliangyou 268 compared to Luliangyou 996.The results showed that total amino acid content in grains was 9%higher in Lingliangyou 268 than in Luliangyou 996.There was no significant difference in grain nitrogen(N)content between Lingliangyou 268 and Luliangyou 996,while ratio of amino acid to N was 6%higher in Lingliangyou 268 compared to Luliangyou 996.A total of 16 differentially expressed proteins related to amino acid metabolism(e.g.,erythronate-4-phosphate dehydrogenase domain containing protein)were identified in grains between Lingliangyou 268 and Luliangyou 996.The identified proteins were involved in 10 molecular functions.Six of the 10 defined functions were related to binding(heterocyclic compound binding,nucleoside phosphate binding,nucleotide binding,organic cyclic compound binding,protein binding,and small molecule binding)and the other 4 defined functions were catalytic activity,enzyme regulator activity,hydrolase activity,and transferase activity.These results indicate that the higher grain amino acid content in Lingliangyou 268 compared to Luliangyou 996 is attributed to increased efficiency of converting N to amino acid that results from altered expression of proteins related to amino acid metabolism. 展开更多
关键词 Amino acid content grain quality protein expression protein function hybrid rice
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Role of 5-hydroxytryptamine expression in cerebellar Purkinje cells in obstructive sleep apnea syndrome 被引量:1
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作者 Liping Peng Jinghua Wang +8 位作者 Lihong Zhang Pan Liu min Wang min huang Shengnan Liu Pingping He Li Cui mingxian Li Shao Wang 《Neural Regeneration Research》 SCIE CAS CSCD 2012年第8期606-610,共5页
In the present study, electrical stimulation to the rat insular cortex induced apnea or respiratory disturbance, reduced amplitude of genioglossal electromyogram, and decreased electromyogram integrals. In addition, a... In the present study, electrical stimulation to the rat insular cortex induced apnea or respiratory disturbance, reduced amplitude of genioglossal electromyogram, and decreased electromyogram integrals. In addition, arterial blood gas analysis showed arterial blood acidosis, reduced pH values, increased alkali reserve negative values, decreased peripheral blood 5-hydroxytryptamine content, and increased 5-hydroxytryptamine expression in cerebellar Purkinje cells. Following lidocaine injection to block the habenular nucleus, abnormalities in breath, genioglossal electromyogram, and blood gas values disappeared, and peripheral blood 5-hydroxytryptamine content returned to levels prior to electric stimulation. However, 5-hydroxytryptamine expression in cerebellar Purkinje cells remained high. The results suggested that 5-hydroxytryptamine expression in Purkinje cells did not correlate with ventilation function involving insular cortex and habenular nucleus. 展开更多
关键词 sleep apnea OBSTRUCTIVE CEREBELLUM 5-HYDROXYTRYPTAMINE insular cortex habenular nucleus Purkinje cells
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5-hydroxytryptamine-mediated apnea caused by the habenular nucleus 被引量:1
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作者 min Wang Weihong Lin +4 位作者 Jinghua Wang min huang Chunyong Wang mingxian Li Shao Wang 《Neural Regeneration Research》 SCIE CAS CSCD 2011年第20期1554-1558,共5页
5-hydroxytryptamine contributes to the control of activities of the dilator muscle in the upper respiratory tract, and is derived from the raphe nuclei, in which the habenular nucleus exerts a sustaJned inhibitory eff... 5-hydroxytryptamine contributes to the control of activities of the dilator muscle in the upper respiratory tract, and is derived from the raphe nuclei, in which the habenular nucleus exerts a sustaJned inhibitory effect. In the present study, respiratory motion curve of the genJoglossus muscle and peripheral 5-hydroxytryptamine changes were observed following L-glutamate stimulation of the habenular nucleus of adult Wistar rats. Results showed that the rats had apnea and decreased plasma 5-hydroxytryptamine content after the neurons in habenular nucleus were excited. Genioglossus muscle electromyogram amplitude and integral were significantly reduced. The genioglossus myoelectric activity and respiratory motion curve were similar to obstructive sleep apnea syndrome, thus confirming that the habenular nucleus is the key nucleus involved in the pathogenesis of obstructive sleep apnea syndrome, and is the primary regulated center in the raphe nuclei. Stimulation of the habenular nucleus may suppress 5-hydroxytryptamine release and result in apnea, which is similar to obstructive sleep apnea syndrome. 展开更多
关键词 SLEEP APNEA habenular nucleus 5-HYDROXYTRYPTAMINE GENIOGLOSSUS neural electrophysiology neural regeneration
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Safety evaluation on the clinical application of Tenghuangjiangu tablet for osteoarthritis:a hospital registration study 被引量:2
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作者 min huang 《Traditional Medicine Research》 2017年第1期51-57,共7页
To evaluate the treatment safety of Tenghuangjiangu tablet on osteoarthritis,3365 osteoarthritis patients whose prescription included Tenghuangjiangu tablet from 15 hospitals were involved in the prospective and multi... To evaluate the treatment safety of Tenghuangjiangu tablet on osteoarthritis,3365 osteoarthritis patients whose prescription included Tenghuangjiangu tablet from 15 hospitals were involved in the prospective and multi-center clinical trial.Tenghuangjiangu tablet dosage was decided by instruction or doctors’experience.The course of treatment and observation was 4 weeks.The adverse drug reactions were observed in the treatment process.Results showed male and female patients were 1018(30.25%)and 2347(69.75%),respectively,and 528 patients had allergic history.The patients’average age was 58.30±8.99 years,and the average disease course was 33.29±37.40 months.The average score of WOMAC scale was 95.07±42.42,which indicated the light conditions.2275 patients were treated with combined drug regimen.There were two adverse drug reactions in this research.One reaction was skin rashes with itching and the interventions were stopped original drugs and give antianaphylactic treatment.The other reaction was stomach discomfort with disgusting and the intervention was stopped the original drugs temporarily,then continued to take two drugs after 3 days and the reaction didn’t appear.The accident rate of adverse drug reaction was 0.059%.The safety of Tenghuangjiangu tablet clinical application was good,and the mechanism of adverse drug reaction should be researched in-depth. 展开更多
关键词 Tenghuangjiangu tablet SAFETY OSTEOARTHRITIS
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Phytoremediation of Rare Tailings-Contaminated Soil 被引量:1
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作者 min huang Zhirong Liu Xiang Li 《Journal of Renewable Materials》 SCIE EI 2022年第12期3351-3372,共22页
In order to achieve the goal of circular economy and sustainable development of ecological environment,it is important to separate and recover associated elements from rare mineral resources.Compared with traditional ... In order to achieve the goal of circular economy and sustainable development of ecological environment,it is important to separate and recover associated elements from rare mineral resources.Compared with traditional physical and che-mical remediation methods of contaminated soil,phytoremediation is regarded as the most promising green in-situ restoration technology.The purpose of this review is to efctive alleviate the environmental problems caused by rare tailings contaminated soil through phytoremediation and realize the recovery of uranium-thorium,rare earth elements(REEs)and tantalum niobium.This review took rare tailings with uranium-thorium,REEs tantalum-niobium in China as the research object,then the background,significance,mechanisms and applcation strategies of phytoremediation were elaborated.In additon,the cases of spedies with tolerance to uranium thorium,tantalum niobium as well as REEs and their remediation mechanisms were summarized,respectively.Particularly,the typical plants represented by Bras-sica juncea,Sunflower,Phytolacca americana,Dicramopteris dichotoma,Salix SPP,etc,were very efctive in the reme-diation of rare tailings.The infuence factors of phytoremediation eficiency of tailings contaminated soil were discused.Two main factors were the mobility of heavy metals in soil(external cause)and the ennichment ability of species(inter-nal cause).Since the traditional phytoremediation also had some limitations in view of this,the work discussed some auxiliary methods(such as chelaing agents or microbial assisted restoration)to improve the effiency of phytoreme-diation.Finally,the future development of phytoremediation and potential applcation directions were explored. 展开更多
关键词 Rare tailings uranium-thorium rare earth elements tantalum niobium PHYTOREMEDIATION
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A proteomic landscape of pharmacologic perturbations for functional relevance
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作者 Zhiwei Liu Shangwen Jiang +8 位作者 Bingbing Hao Shuyu Xie Yingluo Liu Yuqi huang Heng Xu Cheng Luo min huang minjia Tan Jun-Yu Xu 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2024年第1期128-139,共12页
Pharmacological perturbation studies based on protein-level signatures are fundamental for drug discovery. In the present study, we used a mass spectrometry (MS)-based proteomic platform to profile the whole proteome ... Pharmacological perturbation studies based on protein-level signatures are fundamental for drug discovery. In the present study, we used a mass spectrometry (MS)-based proteomic platform to profile the whole proteome of the breast cancer MCF7 cell line under stress induced by 78 bioactive compounds. The integrated analysis of perturbed signal abundance revealed the connectivity between phenotypic behaviors and molecular features in cancer cells. Our data showed functional relevance in exploring the novel pharmacological activity of phenolic xanthohumol, as well as the noncanonical targets of clinically approved tamoxifen, lovastatin, and their derivatives. Furthermore, the rational design of synergistic inhibition using a combination of histone methyltransferase and topoisomerase was identified based on their complementary drug fingerprints. This study provides rich resources for the proteomic landscape of drug responses for precision therapeutic medicine. 展开更多
关键词 PROTEOMICS Drug PERTURBATION Drug target Drug combination
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Digital twin driven and intelligence enabled content delivery in end-edge-cloud collaborative 5G networks
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作者 Bo Yi Jianhui Lv +2 位作者 Xingwei Wang Lianbo Ma min huang 《Digital Communications and Networks》 SCIE CSCD 2024年第2期328-336,共9页
The rapid development of 5G/6G and AI enables an environment of Internet of Everything(IoE)which can support millions of connected mobile devices and applications to operate smoothly at high speed and low delay.Howeve... The rapid development of 5G/6G and AI enables an environment of Internet of Everything(IoE)which can support millions of connected mobile devices and applications to operate smoothly at high speed and low delay.However,these massive devices will lead to explosive traffic growth,which in turn cause great burden for the data transmission and content delivery.This challenge can be eased by sinking some critical content from cloud to edge.In this case,how to determine the critical content,where to sink and how to access the content correctly and efficiently become new challenges.This work focuses on establishing a highly efficient content delivery framework in the IoE environment.In particular,the IoE environment is re-constructed as an end-edge-cloud collaborative system,in which the concept of digital twin is applied to promote the collaboration.Based on the digital asset obtained by digital twin from end users,a content popularity prediction scheme is firstly proposed to decide the critical content by using the Temporal Pattern Attention(TPA)enabled Long Short-Term Memory(LSTM)model.Then,the prediction results are input for the proposed caching scheme to decide where to sink the critical content by using the Reinforce Learning(RL)technology.Finally,a collaborative routing scheme is proposed to determine the way to access the content with the objective of minimizing overhead.The experimental results indicate that the proposed schemes outperform the state-of-the-art benchmarks in terms of the caching hit rate,the average throughput,the successful content delivery rate and the average routing overhead. 展开更多
关键词 Digital twin IoE Content delivery CACHING Routing
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AMicroseismic Signal Denoising Algorithm Combining VMD and Wavelet Threshold Denoising Optimized by BWOA
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作者 Dijun Rao min huang +2 位作者 Xiuzhi Shi Zhi Yu Zhengxiang He 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第10期187-217,共31页
The denoising of microseismic signals is a prerequisite for subsequent analysis and research.In this research,a new microseismic signal denoising algorithm called the Black Widow Optimization Algorithm(BWOA)optimized ... The denoising of microseismic signals is a prerequisite for subsequent analysis and research.In this research,a new microseismic signal denoising algorithm called the Black Widow Optimization Algorithm(BWOA)optimized VariationalMode Decomposition(VMD)jointWavelet Threshold Denoising(WTD)algorithm(BVW)is proposed.The BVW algorithm integrates VMD and WTD,both of which are optimized by BWOA.Specifically,this algorithm utilizes VMD to decompose the microseismic signal to be denoised into several Band-Limited IntrinsicMode Functions(BLIMFs).Subsequently,these BLIMFs whose correlation coefficients with the microseismic signal to be denoised are higher than a threshold are selected as the effective mode functions,and the effective mode functions are denoised using WTD to filter out the residual low-and intermediate-frequency noise.Finally,the denoised microseismic signal is obtained through reconstruction.The ideal values of VMD parameters and WTD parameters are acquired by searching with BWOA to achieve the best VMD decomposition performance and solve the problem of relying on experience and requiring a large workload in the application of the WTD algorithm.The outcomes of simulated experiments indicate that this algorithm is capable of achieving good denoising performance under noise of different intensities,and the denoising performance is significantly better than the commonly used VMD and Empirical Mode Decomposition(EMD)algorithms.The BVW algorithm is more efficient in filtering noise,the waveform after denoising is smoother,the amplitude of the waveform is the closest to the original signal,and the signal-to-noise ratio(SNR)and the root mean square error after denoising are more satisfying.The case based on Fankou Lead-Zinc Mine shows that for microseismic signals with different intensities of noise monitored on-site,compared with VMD and EMD,the BVW algorithm ismore efficient in filtering noise,and the SNR after denoising is higher. 展开更多
关键词 Variational mode decomposition microseismic signal DENOISING wavelet threshold denoising black widow optimization algorithm
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Phase structure evolution and coercivity mechanism of high-Co containing permanent magnets
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作者 min huang Yong Ding +5 位作者 Zhihe Zhao Chunguo Wang Bo Zhou Lei Liu Yingli Sun Aru Yan 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第11期403-410,共8页
The phase structure and magnetic properties of high-Co containing permanent magnets with high thermal stability have been systematically studied in this work.It is abnormal that the coercivity of annealed samples was ... The phase structure and magnetic properties of high-Co containing permanent magnets with high thermal stability have been systematically studied in this work.It is abnormal that the coercivity of annealed samples was slightly lower than that of sintered samples,while the coercivity was usually enhanced after annealing in conventional Nd–Fe–B samples.Further analysis showed that in addition to RE2(Fe,Co)14B main phase and RE-rich grain boundary phase,there were also new Co-rich magnetic phases located in the grain boundary.During annealing,the phase structures of high-Co containing magnets were readjusted,especially the increasing Co-rich magnetic phase and emerging RE-rich particles precipitated from the main phase.Eventually,the isolated RE-rich particles would act as the pinning center of the domain wall movement in demagnetization process.It was confirmed that the coercivity of annealed high-Co containing magnets was controlled by both nucleation and pinning.Pinning mechanism can partially compensate for the weakening of magnetic isolation due to increased Co-rich magnetic phase,which explained the moderate decrease in coercivity of annealed high-Co containing magnets.The discovery of new coercivity mechanism contributed to in-depth understanding of high-Co containing magnets. 展开更多
关键词 Co-rich phase PINNING coercivity mechanism high-Co containing magnets
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Early proactive monitoring of DNA-thioguanine in patients with Crohn’s disease predicts thiopurine-induced late leucopenia in NUDT15/TPMT normal metabolizers
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作者 Ting Yang Kang Chao +9 位作者 Xia Zhu Xue-Ding Wang Sumyuet Chan Yan-Ping Guan Jing Mao Pan Li Shao-Xing Guan Wen Xie Xiang Gao min huang 《World Journal of Gastroenterology》 SCIE CAS 2024年第12期1751-1763,共13页
BACKGROUND Thiopurine-induced leucopenia significantly hinders the wide application of thiopurines.Dose optimization guided by nudix hydrolase 15(NUDT15)has significantly reduced the early leucopenia rate,but there ar... BACKGROUND Thiopurine-induced leucopenia significantly hinders the wide application of thiopurines.Dose optimization guided by nudix hydrolase 15(NUDT15)has significantly reduced the early leucopenia rate,but there are no definitive biomarkers for late risk leucopenia prediction.AIM To determine the predictive value of early monitoring of DNA-thioguanine(DNATG)or 6-thioguanine nucleotides(6TGN)for late leucopenia under a NUDT15-guided thiopurine dosing strategy in patients with Crohn’s disease(CD).METHODS Blood samples were collected within two months after thiopurine initiation for detection of metabolite concentrations.Late leucopenia was defined as a leukocyte count<3.5×10^(9)/L over two months.RESULTS Of 148 patients studied,late leucopenia was observed in 15.6%(17/109)of NUDT15/thiopurine methyltransferase(TPMT)normal and 64.1%(25/39)of intermediate metabolizers.In patients suffering late leucopenia,early DNATG levels were significantly higher than in those who did not develop late leucopenia(P=4.9×10^(-13)).The DNATG threshold of 319.43 fmol/μg DNA could predict late leucopenia in the entire sample with an area under the curve(AUC)of 0.855(sensitivity 83%,specificity 81%),and in NUDT15/TPMT normal metabolizers,the predictive performance of a threshold of 315.72 fmol/μg DNA was much more remarkable with an AUC of 0.902(sensitivity 88%,specificity 85%).6TGN had a relatively poor correlation with late leucopenia whether in the entire sample(P=0.021)or NUDT15/TPMT normal or intermediate metabolizers(P=0.018,P=0.55,respectively).CONCLUSION Proactive therapeutic drug monitoring of DNATG could be an effective strategy to prevent late leucopenia in both NUDT15/TPMT normal and intermediate metabolizers with CD,especially the former. 展开更多
关键词 Thiopurine-induced late leucopenia DNA-thioguanine 6-thioguanine nucleotide Proactive therapeutic drug monitoring Crohn’s disease
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Age-related secretion of grancalcin by macrophages induces skeletal stem/progenitor cell senescence during fracture healing
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作者 Nan-Yu Zou Ran Liu +18 位作者 Mei huang Yu-Rui Jiao Jie Wei Yangzi Jiang Wen-Zhen He min huang Yi-Li Xu Ling Liu Yu-Chen Sun Mi Yang Qi Guo Yan huang Tian Su Ye Xiao Wei-Shan Wang Chao Zeng Guang-Hua Lei Xiang-Hang Luo Chang-Jun Li 《Bone Research》 SCIE CAS CSCD 2024年第1期122-136,共15页
Skeletal stem/progenitor cell(SSPC)senescence is a major cause of decreased bone regenerative potential with aging,but the causes of SSPC senescence remain unclear.In this study,we revealed that macrophages in calluse... Skeletal stem/progenitor cell(SSPC)senescence is a major cause of decreased bone regenerative potential with aging,but the causes of SSPC senescence remain unclear.In this study,we revealed that macrophages in calluses secrete prosenescent factors,including grancalcin(GCA),during aging,which triggers SSPC senescence and impairs fracture healing.Local injection of human rGCA in young mice induced SSPC senescence and delayed fracture repair.Genetic deletion of Gca in monocytes/macrophages was sufficient to rejuvenate fracture repair in aged mice and alleviate SSPC senescence.Mechanistically,GCA binds to the plexin-B2 receptor and activates Arg2-mediated mitochondrial dysfunction,resulting in cellular senescence.Depletion of Plxnb2 in SSPCs impaired fracture healing.Administration of GCA-neutralizing antibody enhanced fracture healing in aged mice.Thus,our study revealed that senescent macrophages within calluses secrete GCA to trigger SSPC secondary senescence,and GCA neutralization represents a promising therapy for nonunion or delayed union in elderly individuals. 展开更多
关键词 healing UNION SENESCENCE
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Changes in Leaf Stomatal Properties in Rice with the Growing Season
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作者 Jiana Chen Fangbo Cao min huang 《Phyton-International Journal of Experimental Botany》 SCIE 2024年第4期807-817,共11页
Transplanting rice varieties grown in different seasons can lead to different yields due to different dry matterproduction. Early-season rice varieties transplanted in the late season can obtain high yields with short... Transplanting rice varieties grown in different seasons can lead to different yields due to different dry matterproduction. Early-season rice varieties transplanted in the late season can obtain high yields with short-growthduration and higher yields driven by higher dry matter production. To make clear the variations in dry matterproduction across seasons, four early-season rice varieties were chosen for late-season transplantation. The grainyield, dry matter accumulation, leaf photosynthetic, and leaf stomatal properties were studied. It was observedthat the average yields of these four varieties in the late season were 33% greater, despite a reduced growth periodof 13 days in comparison with the early season. Furthermore, there was a notable increase in both total and postheadingdry matter production during the late season. The leaf net photosynthetic rate, stomatal area, stomatalwidth, and stomatal length were higher in the late season. Despite no significant difference in stomatal densitybetween seasons, strong positive linear relationships were observed between net photosynthetic rate and stomatalconductance, and between stomatal conductance and area. These relationships demonstrate that the increase ofthe stomatal width and length of the leaves in the late season leads to an increase in the stomatal area, therebyincreasing the stomatal conductance and enhancing the photosynthesis of the leaves. Consequently, this leads togreater dry matter production and a higher yield compared to the early season. Therefore, when breeding newhigh-yielding and short-growing varieties, the large stomatal area can be used as a reference index. 展开更多
关键词 PHOTOSYNTHESIS RICE stomatal properties SEASON yield
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Time-History Dynamic Characteristics of Reinforced Soil-Retaining Walls
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作者 Lianhua Ma min huang Linfeng Han 《Structural Durability & Health Monitoring》 EI 2024年第6期853-869,共17页
Given the complexities of reinforced soil materials’constitutive relationships,this paper compares reinforced soil composite materials to a sliding structure between steel bars and soil and proposes a reinforced soil... Given the complexities of reinforced soil materials’constitutive relationships,this paper compares reinforced soil composite materials to a sliding structure between steel bars and soil and proposes a reinforced soil constitutive model that takes this sliding into account.A finite element dynamic time history calculation software for composite response analysis was created using the Fortran programming language,and time history analysis was performed on reinforced soil retaining walls and gravity retaining walls.The vibration time histories of reinforced soil retaining walls and gravity retaining walls were computed,and the dynamic reactions of the two types of retaining walls to vibration were compared and studied.The dynamic performance of reinforced earth retaining walls was evaluated. 展开更多
关键词 Reinforced earth retaining walls time history dynamic analysis finite element
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中国碳交易试点政策与绿色技术进步偏向--基于城市层面数据的考察 被引量:9
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作者 刘自敏 黄敏 申颢 《产业经济评论》 CSSCI 2022年第1期201-219,共19页
碳交易试点的开启旨在降耗减排和推动经济绿色发展,而绿色技术进步在促进发展的同时还兼具资源环境约束作用。本文利用2007-2016年中国242个地级及以上城市数据,测算了产出有偏技术进步指数并判断其绿色技术进步偏向,进一步检验了碳交... 碳交易试点的开启旨在降耗减排和推动经济绿色发展,而绿色技术进步在促进发展的同时还兼具资源环境约束作用。本文利用2007-2016年中国242个地级及以上城市数据,测算了产出有偏技术进步指数并判断其绿色技术进步偏向,进一步检验了碳交易试点政策对于城市产出有偏技术进步及绿色技术进步偏向是否具有促进作用。研究发现:(1)样本城市的产出有偏技术进步指数总体上大于1,其中东部地区和全国走向较为一致,中西部地区起伏相对较大。(2)从产出偏向来看,全国及东、中、西部城市的产出技术进步偏向非期望产出的比例都超过了50%,且中西部地区的比例高于全国和东部地区,说明绿色技术进步有待进一步优化。(3)碳交易试点的开启促进了城市产出有偏技术进步及绿色技术进步偏向,在一定程度上实现了预期的减排目的。(4)碳交易试点开启会通过抑制地区环境规制强度进而促进城市层面产出有偏技术进步。(5)碳交易试点可以通过提高研发投入、优化产业结构、推进金融发展从而促进绿色偏向型技术进步。本文为加快建设全国统一碳排放交易市场提供了一定的理论支持与经验证据。 展开更多
关键词 碳交易试点政策 绿色技术进步 产出偏向 期望产出
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Guest Editorial: Internet of things and intelligent devices and services
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作者 min huang YINONG CHEN 《CAAI Transactions on Intelligence Technology》 2018年第2期73-74,共2页
1 Introduction Intemet of Things (IoT) refers to uniquely identifiable objects (things) and their virtual representations in the Intemet and web applications. The concept was initially applied in the Radio-Frequen... 1 Introduction Intemet of Things (IoT) refers to uniquely identifiable objects (things) and their virtual representations in the Intemet and web applications. The concept was initially applied in the Radio-Frequency Identification RFID-tags to mark the Electronic Product Code (Auto-ID Lab). IoT concept is later extended to refer to the world where physical objects are seamlessly integrated into the information network, and where the physical objects can become active participants in business processes. 展开更多
关键词 电子产品代码 识别率 人工智能 智能系统
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Bearing Defect Detection Based on Acoustic Feature Extraction and Statistical Learning
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作者 Di Wu Jinlong Sun +3 位作者 Zhifeng Liu Ziqian Zhang min huang Zhongzhe Xiao 《Journal of Applied Mathematics and Physics》 2021年第11期2927-2935,共9页
<div style="text-align:justify;"> Bearings are widely utilized as key components in industrial scenarios. Therefore, the automatic and precise inspection of bearing defects is imperative for the manufa... <div style="text-align:justify;"> Bearings are widely utilized as key components in industrial scenarios. Therefore, the automatic and precise inspection of bearing defects is imperative for the manufacturing of the bearing. In this paper, a novel defect detection method based on acoustics is proposed to further improve both the accuracy and the efficiency of the defection process. We firstly constructed a labeled dataset composed of acoustic signals sampling from different bearings with a certain rotational speed. OpenSMILE is adopted to extract the acoustic features and the target acoustic feature dataset with 6373 features is formed. To further improve the efficiency of the proposed method, a feature selection strategy based on the chi-square test is adopted to eliminate the most inefficient features. Several statistical learning models are constructed and trained as the classifier. Eventually, the performance of classifiers is evaluated and achieves relatively high accuracy and efficiency with an extremely imbalanced dataset. </div> 展开更多
关键词 Bearing Defect Detection Feature Extraction Machine Learning
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烟碱对腹腔感染败血症小鼠的保护作用及其机制研究
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作者 贾宝辉 刘宁 +3 位作者 陈奕 黄敏 尚明升 杜玉明 《中国现代医学杂志》 CAS 2018年第14期7-12,共6页
目的探讨烟碱激活胆碱能抗炎通路对败血症的保护作用及其机制。方法采用盲肠结扎并穿孔(CLP)法复制败血症模型。65只健康昆明小鼠分为对照组、CLP组和烟碱400μg/kg组,记录CLP后24、36和48 h的生存率。另取18只小鼠分组同上,CLP后20 h... 目的探讨烟碱激活胆碱能抗炎通路对败血症的保护作用及其机制。方法采用盲肠结扎并穿孔(CLP)法复制败血症模型。65只健康昆明小鼠分为对照组、CLP组和烟碱400μg/kg组,记录CLP后24、36和48 h的生存率。另取18只小鼠分组同上,CLP后20 h计算肺湿干重比、败血症严重程度评分,行肝、肺组织病理学检查。另取120只小鼠随机分为对照组、CLP组,以及烟碱400、200和40μg/kg组,酶联免疫吸附法检测CLP后1、2、4和6 h血浆TNF-α和IL-1β的浓度。结果术后24、36和48 h,烟碱400μg/kg组生存率较CLP组升高(P<0.05);术后20 h烟碱400μg/kg组肺湿干重比和败血症严重程度评分较CLP组降低(P<0.05),肝、肺组织病理改变较CLP组减轻。术后2、4和6 h,烟碱400、200和40μg/kg组血浆TNF-α浓度较CLP组降低(P<0.05);术后1和6 h,烟碱400、200和40μg/kg组血浆IL-1β浓度较CLP组降低(P<0.05)。烟碱400μg/kg组血浆TNF-α浓度在术后2 h低于40μg/kg组(P<0.05),术后6 h低于200和40μg/kg组(P<0.05)。并术后2和4 h烟碱200μg/kg组血浆TNF-α浓度较40μg/kg组降低(P<0.05)。术后4 h烟碱400μg/kg组血浆IL-1β浓度低于200和40μg/kg组(P<0.05)。结论烟碱减轻腹腔严重感染小鼠败血症严重程度,改善肝、肺的病理组织学变化,降低机体促炎症细胞因子水平,提高生存率。 展开更多
关键词 烟碱 胆碱能抗炎通路 败血症 肿瘤坏死因子 白细胞介素1Β
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美国妇女选举权档案开发利用的特色分析及启示
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作者 黄霄羽 位焕锦 黄敏 《北京档案》 北大核心 2020年第5期40-43,共4页
美国国家档案馆为纪念宪法《第十九条修正案》100周年,发起一项为期18个月的全国性倡议,带动各州庆祝妇女选举权。本文分析指出美国妇女选举权档案开发利用的内容特色——主题集中、关注个体和突出人物;方式特色——多媒介、数字化和关... 美国国家档案馆为纪念宪法《第十九条修正案》100周年,发起一项为期18个月的全国性倡议,带动各州庆祝妇女选举权。本文分析指出美国妇女选举权档案开发利用的内容特色——主题集中、关注个体和突出人物;方式特色——多媒介、数字化和关联式开发并行,最后总结出对我国的启示——档案开发利用宜主题集中、方式多样、把握时机的持续性。 展开更多
关键词 美国 妇女选举权 档案利用
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