|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Isolation and initial characterization of GW5, a major QTL associated with rice grain width and weight显示文摘谷物重量是庄稼谷物产量的一个主要决定因素并且被自然地发生的量的特点 loci (QTL ) 控制。我们更早识别了控制米饭谷物宽度和重量的主要 QTL, GW5,它在米饭染色体 5 上被印射到一个再结合热点。获得 GW5 怎么控制米饭谷物宽度的更好的理解,我们进行了这个地点的好印射并且揭开在米饭栽培变种 Asominori 与增加的谷物宽度联系的 1 212-bp 删除,与苗条谷物米饭 IR24 比较。另外, 46 米饭栽培变种的 genotyping 分析表明这删除高度与谷物宽度显型被相关,建议 GW5 删除可能在米饭驯服期间被选择了。GW5 编码对原子核局部性的 144 氨基酸的新奇原子蛋白质。而且,我们证明 GW5 身体上在酵母与 polyubiquitin 交往二混血儿的试金。一起,我们的结果建议 GW5 代表主要 QTL 内在的米饭宽度和重量,并且它多半在 ubiquitin-proteasome 小径行动在种子开发期间调整房间分割。这研究提供新奇卓见进控制米饭谷物开发的分子的机制并且建议 GW5 能为庄稼的产量很高的繁殖用作一个潜在的工具。 | Jianfeng Weng Suhai Gu Xiangyuan Wan He Gao Tao Guo Ning Su Cailin Lei Xin Zhang Zhijun Cheng Xiuping Guo Jiulin Wang Ling Jiang Huqu Zhai Jianmin Wan | 2008 | Cell Research2008，18，12： | 248 |
| 2 | The Tartary Buckwheat Genome Provides Insights into Rutin Biosynthesis and Abiotic Stress Tolerance显示文摘 | Zhang, Lijun Li, Xiuxiu Ma, Bin Gao, Qiang Du, Huilong Han, Yuanhuai Li, Yan Cao, Yinghao Qi, Ming Zhu, Yaxin Lu, Hongwei Ma, Mingchuan Liu, Longlong Zhou, Jianping Nan, Chenghu Qin, Yongjun Wang, Jun Cui, Lin Liu, Huimin Liang, Chengzhi Qiao, Zhijun | 2017 | Molecular Plant2017，10，9： | 53 |
| 3 | Variations between rice cultivars in iron and manganese plaque on roots and the relation with plant cadmium uptake显示文摘To understand certain mechanisms causing variations between rice cultivars with regard to cadmium uptake and tolerance,pot soil experiments were conducted with two rice cultivars of different genotypes under different soil Cd levels.The relationships between plant Cd uptake and iron/manganese(Fe/Mn) plaque formation on roots were investigated.The results showed that rice cultivars di?ered markedly in Cd uptake and tolerance.Under soil Cd treatments,Cd concentrations and accumulations in the cultivar Shanyou 63(the genotype indica) were significantly higher than those in the cultivar Wuyunjing 7(the genotype japonica)(P < 0.01,or P < 0.05),and Shanyou 63 was more sensitive to Cd toxicity than Wuyunjing 7.The differences between the rice cultivars were the largest at relatively low soil Cd level(i.e.,10 mg/kg).Fe concentrations in dithionite-citrate-bicarbonate root extracts of Shanyou 63 were generally lower than that of Wuyunjing 7,and the difference was the most significant under the treatment of 10 mg Cd/kg soil.The results indicated that the formation of iron plaque on rice roots could act as a barrier to soil Cd toxicity,and may be a 'buffer' or a 'reservoir' which could reduce Cd uptake into rice roots.And the plaque may contribute,to some extent,to the genotypic differences of rice cultivars in Cd uptake and tolerance. | Jianguo Liu Changxun Cao Minghung Wong Zhijun Zhang Yuhong Chai | 2010 | Journal of Environmental Sciences2010，22，7： | 43 |
| 4 | Emergence and prevalence of naturally occurring lower virulent African swine fever viruses in domestic pigs in China in 2020显示文摘African swine fever virus(ASFV)has been circulating in China for more than two years,and it is not clear whether the biological properties of the virus have changed.Here,we report on our surveillance of ASFVs in seven provinces of China,from June to December,2020.A total of 22 viruses were isolated and characterized as genotype II ASFVs,with mutations,deletions,insertions,or short-fragment replacement occurring in all isolates compared with Pig/HLJ/2018(HLJ/18),the earliest isolate in China.Eleven isolates had four different types of natural mutations or deletion in the EP402R gene and displayed a nonhemadsorbing(non-HAD)phenotype.Four isolates were tested for virulence in pigs;two were found to be as highly lethal as HLJ/18.However,two non-HAD isolates showed lower virulence but were highly transmissible;infection with 106 TCID50 dose was partially lethal and caused acute or sub-acute disease,whereas 103 TCID50 dose caused non-lethal,sub-acute or chronic disease,and persistent infection.The emergence of lower virulent natural mutants brings greater difficulty to the early diagnosis of ASF and creates new challenges for ASFV control. | Encheng Sun Zhenjiang Zhang Zilong Wang Xijun He Xianfeng Zhang Lulu Wang Wenqing Wang Lianyu Huang Fei Xi Haoyue Huangfu Ghebremedhin Tsegay Hong Huo Jianhong Sun Zhijun Tian Wei Xia Xuewu Yu Fang Li Renqiang Liu Yuntao Guan Dongming Zhao Zhigao Bu | 2021 | Science China(Life Sciences)2021，64，5： | 46 |
| 5 | Contemporary crustal deformation of the Chinese continent and tectonic block model显示文摘We obtain the preliminary result of crustal deformation velocity field for the Chinese con-tinent by analyzing GPS data from the Crustal Motion Observation Network of China (CMONOC), particularly the data from the regional networks of CMONOC observed in 1999 and 2001. We de-lineate 9 tectonically active blocks and 2 broadly distributed deformation zones out of a denseGPS velocity field, and derive block motion Euler poles for the blocks and their relative motionrates. Our result reveals that there are 3 categories of deformation patterns in the Chinese conti-nent. The first category, associated with the interior of the Tibetan Plateau and the Tianshan oro-genic belt, shows broadly distributed deformation within the regions. The third category, associatedwith the Tarim Basin and the region east of the north-south seismic belt of China, shows block-likemotion, with deformation accommodated along the block boundaries only. The second category, mainly associated with the borderland of the Tibetan Plateau, such as the Qaidam, Qilian, Xining(in eastern Qinghai), and the Diamond-shaped (in western Sichuan and Yunnan) blocks, has thedeformation pattern between the first and the third, i.e. these regions appear to deform block-like,but with smaller sizes and less strength for the blocks. Based on the analysis of the lithosphericstructures and the deformation patterns of the regions above, we come to the inference that thedeformation modes of the Chinese continental crust are mainly controlled by the crustal structure.The crust of the eastern China and the Tarim Basin is mechanically strong, and its deformationtakes the form of relative motion between rigid blocks. On the other hand, the northward indentation of the Indian plate into the Asia continent has created the uplift of the Tibetan Plateau and the Tianshan Mountains, thickened their crust, and raised the temperature in the crust. The lower crust thus has become ductile, evidenced in low seismic velocity and high electric conductivity observed. The brittle part of the crust, driven by the visco-plastic flow of the lower crust, deforms extensively at all scales. The regions of the second category located at the borderland of the Tibetan Plateau are at the transition zone between the regions of the first and the third categories in terms of the crustal structure. Driven by the lateral boundary forces, their deformation style is also between the two, in the form of block motion and deformation with smaller blocks and less internal strength. | WANG Min (王 敏) SHEN Zhengkang (沈正康) NIU Zhijun (牛之俊) ZHANG Zusheng (张祖胜) SUN Hanrong (孙汉荣) GAN Weijun (甘卫军) WANG Qi (王 琪) REN Qun (任 群) | 2003 | Science China Earth Sciences2003，46，z2： | 33 |
| 6 | Hydrothermal recrystallization of the Lower Ordovician dolomite and its significance to reservoir in northern Tarim Basin显示文摘Discovered in S15 and some other wells, the Lower Ordovician in the northern Tarim Basin consists mainly of brown gray-dark gray very fine-fine crystalline dolomite, with a minor portion of locally light gray-white medium-coarse crystalline dolomite. Silicification can be observed in the medium-coarse dolomite, and some euhedral drusy quartz can also be found in pores and fractures of the dolomite. The homogenization temperature of the fluid inclusions in the medium-coarse dolomite is between 110 and 200°C with maximum between 140 and 190°C, and the salinity is between 10.7 and 18.5 wt.% NaCl Eq. The homogenization temperature and salinity of the fluid inclusions in the medium-coarse dolomite are similar to those in the drusy quartz. Compared with the very fine-fine dolomite, the medium-coarse phase contains relatively high Fe and Mn. The average concentration of FeO and MnO in the medium-coarse dolomite is 1.917% and 0.323%, respectively. The medium-coarse dolomite has a remarkable negative Eu anomaly, consistent with the REE pattern of the intermediate-felsic igneous rocks in the Tarim Basin. The oxygen isotopic composition of the medium-coarse dolomite is relatively lighter than that of the very fine-fine dolomite. The δ18OPDB values of the medium-coarse dolomite are between -10.35‰ and -7.31‰. The δ18OSMOW values of the fluid associated with the medium-coarse dolomite can be calculated according to homogenization temperature and oxygen isotope fractionation factor between dolomite and fluid, and the calculated values are between +4‰ and +10‰, consistent with those of the hydrothermal fluid. The medium-coarse dolomite has relatively high 87Sr/86Sr ratios as well, indi- cating an origin associated with intermediate-felsic igneous rock. The homogenization temperature, element composition, REE pattern, oxygen and strontium isotopes demonstrate that the medium-coarse dolomite is the result of recrystallization of very fine-fine dolomite under hydrothermal environment. The hydrothermal dolomite recrystallization is a special event but exists extensively in the Tarim Basin. The recrystallized dolomite becomes well reservoir bed for many intercrystalline pores and dissolution pores are produced in this event, so that more attention should be paid to the altered dolomite during the petroleum exploration in the lower Paleozoic in the Tarim Basin. | ZHU DongYa JIN ZhiJun HU WenXuan | 2010 | Science China Earth Sciences2010，53，3： | 34 |
| 7 | The altered expression of inflammation-related microRNAs with microRNA-155 expression correlates with Th17 differentiation in patients with acute coronary syndrome显示文摘MicroRNAs(miRNAs)are a novel class of small,non-coding RNAs that play a significant role in both inflammatory and cardiovascular diseases.Immune cells,especially T helper(Th)cells,are critical in the development of atherosclerosis and the onset of acute coronary syndrome(ACS).To assess whether inflammation-related miRNAs(such as miR-155,146a,21,125a-5p,125b,31)are involved in the imbalance of Th cell subsets in patients with ACS,we measured the expression of related miRNAs in patients with acute myocardial infarction(AMI),unstable angina(UA),stable angina(SA)and chest pain syndrome(CPS);analyzed the relationship between miRNA expression and the frequency of Th cell subsets;and observed the co-expression of miR-155 and IL-17A in peripheral blood mononuclear cells(PBMCs)of patients with ACS.The results showed that the expression of miR-155 in the PBMCs of patients with ACS was decreased by approximately 60%,while the expression of both miR-21 and miR-146a was increased by approximately twofold.The expression patterns of miRNAs in plasma correlated with those in PBMCs,except for miR-21,which was increased by approximately sixfold in the AMI group and showed no significant difference between the UA group and the CPS group.We also found that the expression of miR-155 inversely correlated with the frequency of Th17 cells(r520.896,P,0.01)and that miR-155 was co-expressed with IL-17A in patients with ACS.In conclusion,our study revealed the expression patterns of inflammation-related miRNAs in patients with ACS and found that miR-155 may be associated with Th17 cell differentiation. | Rui Yao Yulan Ma Youyou Du Mengyang Liao Huanhuan Li Wei Liang Jing Yuan Zhijun Ma Xian Yu Hong Xiao Yuhua Liao | 2011 | Cellular & Molecular Immunology2011，8，6： | 32 |
| 8 | Prognostic value of systemic immune.inflammation index in patients with gastric cancer显示文摘Background:Inflammation-based indexes have been used to predict survival and recurrence in cancer patients.Systemic immune-inflammation index(Sll) was reported to be associated with prognosis in some malignant tumors.In the present study,we aimed to explore the association between Sll and the prognosis of patients with gastric cancer.Methods:We retrospectively analyzed data from 444 gastric cancer patients who underwent gastrectomy at the First Affiliated Hospital of Sun Yat-sen University between January 1994 and December 2005.Preoperative Sll was calculated.The Chi square test or Fisher's exact test was used to determine the relationship between preoperative Sll and clinicopathologic characteristics.Overall survival(OS) rates were estimated using the Kaplan-Meier method,and the effect of Sll on OS was analyzed using the Cox proportional hazards model.Receiver operating characteristic(ROC)curves were used to compare the predictive ability of Sll,NLR,and PLR.Results:Sll equal to or higher than 660 was significantly associated with old age,large tumor size,unfavorable Borrmann classification,advanced tumor invasion,lymph node metastasis,distant metastasis,advanced TNM stage,and high carcino-embryonic antigen level,high neutrophil-lymphocyte ratio,and high platelet-lymphocyte ratio(all P<0.05).High Sll was significantly associated with unfavorable prognosis(P<0.001) and Sll was an independent predictor for OS(P=0.015).Subgroups analysis further showed significant associations between high Sll and short OS in stage Ⅰ,Ⅱ,Ⅲ subgroups(all P<0.05).Sll was superior to NLR and PLR for predicting OS in patients with gastric cancer.Conclusion:Preoperative Sll level is an independent prognostic factor for OS in patients with gastric cancer. | Kang Wang Feiyu Diao Zhijun Ye Xinhua Zhang Ertao Zhai Hui Ren Tong Li Hui Wu Yulong He Shirong Cai Jianhui Chen | 2017 | Chinese Journal of Cancer2017，36，9： | 30 |
| 9 | Efficacy and safety of Xinfeng capsule in patients with rheumatoid arthritis:a multi-center parallel-group double-blind randomized controlled trial显示文摘OBJECTIVE:To evaluate the efficacy and safety of Xinfeng capsule in patients suffering rheumatoid arthritis(RA).METHODS:A multi-center parallel-group designed,double-blind,randomized,controlled trial was conducted.Totally 304 RA patients were assigned to two groups:one group was administered Xinfeng capsule(XFC) plus the placebo of leflunomide and the other given leflunomide(LEF) plus the placebo of XFC for twelve weeks.The clinical and laboratory parameters were compared at baseline and fourth,eighth,and twelfth weeks.RESULTS:After twelve-week treatment,patients in two groups all showed some trend of effectiveness when compared in terms of American Rheumatism Association(ACR) recommended 20%,50%,70%improvement criteria,but it was insignificant.The validity in ameliorate modified disease activity score(DAS28) and laboratory indexes as erythrocyte sedimentation rate(ESR),C-reactive protein(CRP),rheumatoid factor(RF) were also found no difference.The score of health assessment questionnaire(HAQ),self-rating anxiety scale(SAS),self-rating depression scale(SDS) and quality of life questionnaire with rheumatoid arthritis(RAQOL)both lower than the first week and the changes showed no difference.However,the score of SDS dropped more in XFC group than in the other.A total of 147 adverse reaction cases were reported,which shows no difference between the two groups.The most common adverse reactions were hepatic impairment,anemia,leukocytopenia,epigastric discomfort and phalacrosis.CONCLUSION:XFC demonstrated better improvement in the scores of SDS and compared with those of LEF group. | Liu Jian Wang Yuan Huang Chuanbing Xu Jianhua Li Zhijun Xu Liang He Liyun Sun Yue Wang Yali Xu Shengqian Zhao Ping Mao Tongjun Tan Bin Zhu Fubing Zhang Pingheng Fang Li | 2015 | Journal of Traditional Chinese Medicine2015，35，5： | 27 |
| 10 | Sleep and Cognitive Abnormalities in Acute Minor Thalamic Infarction显示文摘In order to characterize sleep and the cognitive patterns in patients with acute minor thalamic infarction(AMTI), we enrolled 27 patients with AMTI and 12 matched healthy individuals. Questionnaires about sleep and cognition as well as polysomnography(PSG) were performed on days 14 and 90 post-stroke. Compared to healthy controls, in patients with AMTI, hyposomnia was more prevalent; sleep architecture was disrupted as indicated by decreased sleep efficiency, increased sleep latency, and decreased non-rapid eye movement sleep stages 2 and 3;more sleep-related breathing disorders occurred; and cognitive functions were worse, especially memory. While sleep apnea and long-delay memory recovered to a large extent in the patients, other sleep and cognitive function deficit often persisted. Patients with AMTI are at an increased risk for hyposomnia, sleep structure disturbance,sleep apnea, and memory deficits. Although these abnormalities improved over time, the slow and incomplete improvement suggest that early management should be considered in these patients. | Wei Wu Linyang Cui Ying Fu Qianqian Tian Lei Liu Xuan Zhang Ning Du Ying Chen Zhijun Qiu Yijun Song Fu-Dong Shi Rong Xue | 2016 | Neuroscience Bulletin2016，32，4： | 28 |
| 11 | Identification of a Stable Quantitative Trait Locus for Percentage Grains with White Chalkiness in Rice (Oryza sativa)显示文摘High chalkiness is a major problem in many rice-producing areas of the world, especially in hybrid rice (Oryza sativa L.) in China. We previously showed a major quantitative trait locus for the percentage of grains with white chalkiness (QTLqPGWC-8) in the interval G1149-R727 on chromosome 8 using a chromosome segment substitution line (CSSL). Here, we selected the line-CSSL50 harboring the QTLqPGWC-8 allele from the CSSLs derived from a cross between Asominori (as a recurrent parent) and IR24 (as a donor parent), which had higher percentage chalkiness, markedly different from that of Asominori. There were also significant differences in starch granules, appearance of amylose content (AAC) and milling qualities between Asominori and CSSL50, but not in grain size or thousand grain weight (TGW). The BC4F2 and BC4F3 populations from a cross between CSSL50 and Asominori were used for fine mapping of qPGWC-8. We narrowed down the location of this QTL to a 142 kb region between Indel markers 8G-7 and 8G-9. QTLqPGWC-8 accounted for 50.9% of the difference in PGWC between the parents. The markers tightly linked to qPGWC-8 should facilitate cloning of the gene underlying this QTL and will be of value for marker-assisted selection in breeding rice varieties with better grain quality. | Tao Guo Xiaolu Liu Xiangyuan Wan Jianfeng Weng Shijia Liu Xi Liu Mingjiang Chen Jingjing Li Ning Su Fuqing Wu Zhijun Cheng Xiuping Guo Cailin Lei Jiulin Wang Ling jiang Jianmin Wan | 2011 | Journal of Integrative Plant Biology2011，53，8： | 25 |
| 12 | Exploring atmospheric free-radical chemistry in China:the self-cleansing capacity and the formation of secondary air pollution显示文摘Since 1971,it has been known that the atmospheric free radicals play a pivotal role in maintaining the oxidizing power of the troposphere.The existence of the oxidizing power is an important feature of the troposphere to remove primary air pollutants emitted from human beings as well as those from the biosphere.Nevertheless,serious secondary air-pollution incidents can take place due to fast oxidation of the primary pollutants.Elucidating the atmospheric free-radical chemistry is a demanding task in the field of atmospheric chemistry worldwide,which includes two kinds of work:first,the setup of reliable radical detection systems;second,integrated field studies that enable closure studies on the sources and sinks of targeted radicals such as OH and NO3.In this review,we try to review the Chinese efforts to explore the atmospheric free-radical chemistry in such chemical complex environments and the possible link of this fast gas-phase oxidation with the fast formation of secondary air pollution in the city-cluster areas in China. | Keding Lu Song Guo Zhaofeng Tan Haichao Wang Dongjie Shang Yuhan Liu Xin Li Zhijun Wu Min Hu Yuanhang Zhang | 2019 | National Science Review2019，6，3： | 26 |
| 13 | A Survey of Human-centered Intelligent Robots:Issues and Challenges显示文摘Intelligent techniques foster the dissemination of new discoveries and novel technologies that advance the ability of robots to assist and support humans. The human-centered intelligent robot has become an important research field that spans all of the robot capabilities including navigation, intelligent control, pattern recognition and human-robot interaction. This paper focuses on the recent achievements and presents a survey of existing works on human-centered robots. Furthermore, we provide a comprehensive survey of the recent development of the human-centered intelligent robot and discuss the issues and challenges in the field. | Wei He Zhijun Li C.L.Philip Chen | 2017 | IEEE/CAA Journal of Automatica Sinica2017，4，4： | 26 |
| 14 | Effects of clay and calcium ions on coal flotation显示文摘The microflotation of three single minerals,mixed coal–kaolinite and mixed coal–montmorillonite were examined to study the effects of clay and calcium ions on coal flotation.The results show that the ash content of flotation concentrate increases by 3%in the presence of clay minerals,and the ash content would further increase by 3%in co-presence of clay minerals and high concentration of Ca2+.Scanning electron microscope(SEM)images and elemental spectrum analysis indicate that fne clay particles that coat on the coal surface,which is called slime coating,can affect the coal flotation.The slime coating would be induced much more easily in the presence of Ca2+. | Zhang Zhijun Liu Jiongtian Xu Zhiqiang Ma Liqiang | 2013 | International Journal of Mining Science and Technology2013，23，5： | 24 |
| 15 | Paleomagnetic dating of the Jiuquan Gravel in the Hexi Corridor:Implication on mid-Pleistocene uplift of the Qinghai-Tibetan Plateau显示文摘The sediments in the foreland basins around the Qinghai-Tibetan Plateau preserved crucial information to reveal its tectonic history. In the Hexi Corridor, north periphery of the Qinghai-Tibetan Plateau, the angular unconformity between the Jiuquan Gravel and the Yumen Conglomerate has been well known to represent an intensive tectonic event of the plateau. However, its age is poorly constrained. Our paleomagnetic dating at the Laojunmiao section in the Jiuxi Basin show that the bottom of the Jiuquan Gravel reaches 0.84 MaBP, the top of the Yumen Conglomerate is about 0.93 MaBP. This result clearly demonstrates that the northern Qinghai-Tibetan Plateau experienced an intensive movement at mid-Pleistocene. | ZHAO Zhijun FANG Xiaomin LI Jijun PAN Baotian YAN Maodu SHI Zhengtao | 2001 | Chinese Science Bulletin2001，46，23： | 23 |
| 16 | Inflammatory Cytokines and Alzheimer's Disease: A Review from the Perspective of Genetic Polymorphisms显示文摘Neuroinflammatory processes are a central feature of Alzheimer's disease(AD) in which microglia are over-activated, resulting in the increased production of proinflammatory cytokines. Moreover, deficiencies in the antiinflammatory system may also contribute to neuroinflammation. Recently, advanced methods for the analysis of genetic polymorphisms have further supported the relationship between neuroinflammatory factors and AD risk because a series of polymorphisms in inflammation-related genes have been shown to be associated with AD. In this review, we summarize the polymorphisms of both pro- and anti-inflammatory cytokines related to AD, primarily interleukin-1(IL-1), IL-6, tumor necrosis factor alpha, IL-4, IL-10, and transforming growth factor beta, as well as their functional activity in AD pathology. Exploration of the relationship between inflammatory cytokine polymorphisms and AD risk may facilitate our understanding of AD pathogenesis and contribute to improved treatment strategies. | Fan Su Feng Bai Zhijun Zhang | 2016 | Neuroscience Bulletin2016，32，5： | 22 |
| 17 | Recent advances in the precise control of isolated single-site catalysts by chemical methods显示文摘The search for constructing high-performance catalysts is an unfailing topic in chemical fields. Recently, we have witnessed many breakthroughs in the synthesis of single-atom catalysts(SACs) and their applications in catalytic systems. They have shown excellent activity, selectivity, stability, efficient atom utilization and can serve as an efficient bridge between homogeneous and heterogenous catalysis. Currently, most SACs are synthesized via a bottom-up strategy; however, drawbacks such as the difficulty in accessing high mass activity and controlling homogeneous coordination environments are inevitably encountered, restricting their potential use in the industrial area. In this regard, a novel top-down strategy has been recently developed to fabricate SACs to address these practical issues. The metal loading can be increased to 5% and the coordination environments can also be precisely controlled. This review highlights approaches to the chemical synthesis of SACs towards diverse chemical reactions, especially the recent advances in improving the mass activity and well-defined local structures of SACs. Also, challenges and opportunities for the SACs will be discussed in the later part. | Zhijun Li Dehua Wang Yuen Wu Yadong Li | 2018 | National Science Review2018，5，5： | 21 |
| 18 | Source Separation of Diesel Engine Vibration Based on the Empirical Mode Decomposition and Independent Component Analysis显示文摘Vibration signals from diesel engine contain many different components mainly caused by combustion and mechanism operations,several blind source separation techniques are available for decomposing the signal into its components in the case of multichannel measurements,such as independent component analysis(ICA).However,the source separation of vibration signal from single-channel is impossible.In order to study the source separation from single-channel signal for the purpose of source extraction,the combination method of empirical mode decomposition(EMD) and ICA is proposed in diesel engine signal processing.The performance of the described methods of EMD-wavelet and EMD-ICA in vibration signal application is compared,and the results show that EMD-ICA method outperforms the other,and overcomes the drawback of ICA in the case of single-channel measurement.The independent source signal components can be separated and identified effectively from one-channel measurement by EMD-ICA.Hence,EMD-ICA improves the extraction and identification abilities of source signals from diesel engine vibration measurements. | DU Xianfeng LI Zhijun BI Fengrong ZHANG Junhong WANG Xia SHAO Kang | 2012 | Chinese Journal of Mechanical Engineering2012，25，3： | 21 |
| 19 | Heat and power load dispatching considering energy storage of district heating system and electric boilers显示文摘As one of promising clean and low-emission energy, wind power is being rapidly developed in China.However, it faces serious problem of wind curtailment,particularly in northeast China, where combined heat and power(CHP) units cover a large proportion of the district heat supply. Due to the inherent strong coupling between the power and the heat load, the operational flexibility of CHP units is severely restricted in winter to meet the heat supply demand, which imparts considerable stress on the wind power connection to the grid. To promote the integration of wind power and enhance the flexibility of CHP units, this paper presented a method of heat and power load dispatching by exploring the energy storage ability of electric heating boilers and district heating systems. The optimization results indicate that the proposed method can integrate additional wind power into the grid and reduce the coal consumption of CHP units over the optimized period. Furthermore, the thermal inertia of a district heating system is found to contribute more to the reduction of coal consumption, whereas the electric heating boilers contribute to lower wind curtailment. | Xianzheng HUANG Zhaofeng XU Yong SUN Yali XUE Zhe WANG Zhijun LIU Zhenyuan LI Weidou NI | 2018 | Journal of Modern Power Systems and Clean Energy2018，6，5： | 20 |
| 20 | Source Rock and Cap Rock Controls on the Upper Ordovician Wufeng Formation–Lower Silurian Longmaxi Formation Shale Gas Accumulation in the Sichuan Basin and its Peripheral Areas显示文摘Objective The Upper Ordovician Wufeng Formation–Lower Silurian Longmaxi Formation is one of the priority interval for shale gas exploration in the Sichuan Basin and its peripheral areas,and commercial shale gas has | NIE Haikuan JIN Zhijun | 2016 | Acta Geologica Sinica(English Edition)2016，90，3： | 19 |
您所在的机构暂未开通此部分的功能，请联系管理员