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65篇 您的检索式:作者名="LU Jinfeng"
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1Fast increasing of surface ozone concentrations in Pearl River Delta characterized by a regional air quality monitoring network during 2006–2011显示文摘Based on the observation by a Regional Air Quality Monitoring Network including 16 monitoring stations, temporal and spatial variations of ozone(O3), NO2and total oxidant(Ox) were analyzed by both linear regression and cluster analysis. A fast increase of regional O3concentrations of 0.86 ppbV/yr was found for the annual averaged values from 2006 to 2011 in Guangdong, China. Such fast O3increase is accompanied by a correspondingly fast NOx reduction as indicated by a fast NO2 reduction rate of 0.61 ppbV/yr. Based on a cluster analysis, the monitoring stations were classified into two major categories – rural stations(non-urban) and suburban/urban stations. The O3concentrations at rural stations were relatively conserved while those at suburban/urban stations showed a fast increase rate of 2.0 ppbV/yr accompanied by a NO2 reduction rate of 1.2 ppbV/yr. Moreover, a rapid increase of the averaged O3 concentrations in springtime(13%/yr referred to 2006 level) was observed, which may result from the increase of solar duration, reduction of precipitation in Guangdong and transport from Eastern Central China. Application of smog production algorithm showed that the photochemical O3production is mainly volatile organic compounds(VOC)-controlled. However, the photochemical O3production is sensitive to both NOx and VOC for O3pollution episode. Accordingly, it is expected that a combined NOx and VOC reduction will be helpful for the reduction of the O3 pollution episodes in Pearl River Delta while stringent VOC emission control is in general required for the regional O3 pollution control.Jinfeng Li Keding Lu Wei Lv Jun Li Liuju Zhong Yubo Ou Duohong Chen Xin Huang Yuanhang Zhang 2014Journal of Environmental Sciences2014,26,1:51
2Additive manufacturing of high-strength CrMnFeCoNi high-entropy alloys-based composites with WC addition显示文摘Laser melting deposition with WC addition has been developed to fabricate high-strength CrMnFeCoNibased high-entropy alloys-based composites.By this technique,a microstructure of compact refined equiaxed grains can be achieved,and the tensile strength can be remarkably improved.The sample with 5 wt%WC addition shows a promising mechanical performance with a tensile strength of 800 MPa and an elongation of 37%.The improvement in mechanical property may be attributed to the formation of Cr(23)C6 reinforcement precipitates,which could promote the heterogeneous nucleation of grains and hinder the propagation of slip bands.Jinfeng Li Shuo Xiang Hengwei Luan Abdukadir Amar Xue Liu Siyuan Lu Yangyang Zeng Guomin Le Xiaoying Wang Fengsheng Qu Chunli Jiang Guannan Yang 2019Journal of Materials Science & Technology2019,35,11:13
3Jasmonic acid carboxyl methyltransferase regulates development and herbivory-induced defense response in rice显示文摘Jasmonic acid(JA) and related metabolites play a key role in plant defense and growth. JA carboxyl methyltransferase(JMT) may be involved in plant defense and development by methylating JA to methyl jasmonate(Me JA) and thus influencing the concentrations of JA and related metabolites. However, no JMT gene has been well characterized in monocotyledon defense and development at the molecular level. After we cloned a rice JMT gene,Os JMT1, whose encoding protein was localized in the cytosol, we found that the recombinant Os JMT1 protein catalyzed JA to Me JA. Os JMT1 is up-regulated in response to infestation with the brown planthopper(BPH; Nilaparvata lugens). Plants in which Os JMT1 had been overexpressed(oeJMT plants) showed reduced height and yield. These oe-JMT plants also exhibited increased Me JA levels but reduced levels of herbivore-induced JA and jasmonoyl-isoleucine(JAIle). The oe-JMT plants were more attractive to BPH female adults but showed increased resistance to BPH nymphs,probably owing to the different responses of BPH female adults and nymphs to the changes in levels of H_2O_2 and Me JA in oe-JMT plants. These results indicate that Os JMT1,by altering levels of JA and related metabolites, plays a role in regulating plant development and herbivore-induced defense responses in rice.Jinfeng Qi Jiancai Li Xiu Han Ran Li Jianqiang Wu Haixin Yu Lingfei Hu Yutao Xiao Jing Lu Yonggen Lou 2016Journal of Integrative Plant Biology2016,58,6:10
4Spatial-resolved metabolomics reveals tissue-specific metabolic reprogramming in diabetic nephropathy by using mass spectrometry imaging显示文摘Detailed knowledge on tissue-specific metabolic reprogramming in diabetic nephropathy(DN)is vital for more accurate understanding the molecular pathological signature and developing novel therapeutic strategies.In the present study,a spatial-resolved metabolomics approach based on air flowassisted desorption electrospray ionization(AFADESI)and matrix-assisted laser desorption ionization(MALDI)integrated mass spectrometry imaging(MSI)was proposed to investigate tissue-specific metabolic alterations in the kidneys of high-fat diet-fed and streptozotocin(STZ)-treated DN rats and the therapeutic effect of astragalosideⅣ,a potential anti-diabetic drug,against DN.As a result,a wide range of functional metabolites including sugars,amino acids,nucleotides and their derivatives,fatty acids,phospholipids,sphingolipids,glycerides,carnitine and its derivatives,vitamins,peptides,and metal ions associated with DN were identified and their unique distribution patterns in the rat kidney were visualized with high chemical specificity and high spatial resolution.These region-specific metabolic disturbances were ameliorated by repeated oral administration of astragaloside Ⅳ(100 mg/kg)for 12 weeks.This study provided more comprehensive and detailed information about the tissue-specific metabolic reprogramming and molecular pathological signature in the kidney of diabetic rats.These findings highlighted the promising potential of AFADESI and MALDI integrated MSI based metabolomics approach for application in metabolic kidney diseases.Zhonghua Wang Wenqing Fu Meiling Huo Bingshu He Yaqi Liu Lu Tian Wanfang Li Zhi Zhou Baili Wang Jianzhen Xia Yanhua Chen Jinfeng Wei Zeper Abliz 2021Acta Pharmaceutica Sinica B2021,11,11:7
5Thermal Shock-Activated Spontaneous Growing of Nanosheets for Overall Water Splitting显示文摘Nanomaterials based on nickel foam(NF) have been widely applied in energy conversion and storage field.Traditional synthesis methods such as hydrothermal method which is dangerous and high cost limited the scalable developments.Herein,we report a fast,simple,and low-cost synthesis method of nanomaterials based on NF by Joule-heating and water soaking treatment.Thin carbon-coated CoS on NF(NF-C/CoS) was synthesized by Joule-heating for a few seconds with rapid cooling.And then,NF-C/CoS/NiOOH with core-shell heterostructure was fabricated by soaking treatment of NF-C/CoS in water on which NiOOH nanosheets grew spontaneously.The formation mechanism is proposed that the coordination complex precursor converts into C/CoS on NF driven by Joule-heating,and the nickel on the surface of NF is activated to form metastable nickel simultaneously.The metastable nickel reacting with water leads to the formation of NiOOH,and the induction of CoS makes NiOOH grow continuously.This synthesis technology provides a new route to manufacture NF-based nanostructures,and the as-fabricated NF-C/CoS/NiOOH exhibits great potential as electrocatalyst for oxygen evolution reaction and hydrogen evolution reaction.Han Wu Qi Lu Jinfeng Zhang Jiajun Wang Xiaopeng Han Naiqin Zhao Wenbin Hu Jiajun Li Yanan Chen Yida Deng 2020Nano-Micro Letters2020,12,11:6
6Weak harmonic signal detection method in chaotic interference based on extended Kalman filter显示文摘The traditional methods of weak harmonic signal detection under strong chaotic interference often suffer from high computational complexity and poor performance. In this paper, an Extended Kalman Filter (EKF) based detection method is proposed for the detection of weak harmonic signal. The EKF method avoids matrix inversion by iterating measurement equation and state equation, which simultaneously improves the robustness and reduces the complexity. Compared with the existing detection methods, the proposed method has the following advantages: 1) it has better performance than the neural network method;2) it has similar performance with the optimal filtering method, but with lower computational complexity;3) it is more robust compared with the optimal filtering method.Chengye Lu Sheng Wu Chunxiao Jiang Jinfeng Hu 2019Digital Communications and Networks2019,5,1:6
7Further study on deep penetrating geochemistry over the Spence porphyry copper deposit,Chile显示文摘深为发现矿物质 depositswas 隐藏渗透 geochemistrythe 表面探索技术的研究由澳大利亚、加拿大、中国的实验室在智利在 Spence 斑岩铜沉积物上执行了用选择弱沥滤方法并且简短这里被考察。乖僻、弱的铜异例在 Spence 沉积物上面被获得,它在一个厚山麓石子封面下面被隐藏。在文学,如此的模式在大多数是普通的弱选择沥滤研究在已知的埋葬的沉积物上执行了。在在未知区域的探索期间,如此的弱沥滤技术导致一些成功,许多弄干洞。在这份报纸,更强壮的选择沥滤方法为氧化物和硫化物被开发,它可以是产品由气体或水通过地质的时间的长跨度通过 overburden 向上带的一个活动先锋阶段转变了并且积累的稳定的结束。在这份报纸开发的方法获得的数据比以前的努力生产了更重要、一致的异常数据。因而,这里描述的 leach 途径可以增加深为隐藏的矿石存款在探索渗透地球化学的有效性。Xuejing Xie Yinxiu Lu Wensheng Yao Jinfeng Bai 2011Geoscience Frontiers2011,2,3:6
8Identification of an endogenous glutamatergic transmitter system controlling excitability and conductivity of atrial cardiomyocytes显示文摘As an excitatory transmitter system,the glutamatergic transmitter system controls excitability and conductivity of neurons.Since both cardiomyocytes and neurons are excitable cells,we hypothesized that cardiomyocytes may also be regulated by a similar system.Duanyang Xie Ke Xiong Xuling Su Guanghua Wang Qiang Ji Qicheng Zou Lingling Wang Yi Liu Dandan Liang Jinfeng Xue Luxin Wang Xueting Gao Xingdong Gu Hongyu Liu r Xiaoyu He Li Li Jian Yang Youming Lu Luying Peng Yi-Han Chen 2021Cell Research2021,31,9:5
9Materials Experiment on Tiangong-2 Space Laboratory显示文摘During the China's Tiangong-2(TG-2) flight mission, the experiments of 18 kinds of material samples were conducted in space by using a Multiple Materials Processing Furnace(MMPF) mounted in the orbital module of the TG-2 space laboratory. After the experiments of 12 kinds of samples of the first and second batches were completed successfully, astronauts packed and brought them back to the ground by ShenzhouII spacecraft. By studying processing and formation on semiconductor and optoelectronics materials, metal alloys and metastable materials, functional single-crystal, micro-and nano-composite materials encapsulated in sample ampoules both in space and on Earth, we expect to explore some physical and chemical processes and mechanism of the materials formation that are normally obscured and therefore are difficult to study quantitatively on the ground due to the gravity-induced convection, to obtain the processing and synthesis technology for preparing high quality materials, and lead to the improvement and development of materials processing techniques on Earth, and also develop the experiment device and comprehensive ability for materials experiment in microgravity environment. This report briefly introduces the main points of each research work and preliminary comparative analysis results of 12 samples carried out by scientists undertaking research task.LI Xiangyang LU Ye MENG Xiangjian WANG Jianlu WANG Reng CHEN Lidong HUA Zile LI Xiaoya SHI Jianlin LIU Jinfeng XU Guisheng WEI Bingbo XIE Wenjun YIN Zhigang ZHANG Xingwang JIANG Hongxiang LI Hong LUO Xinghong ZHANG Haifeng ZHAO Jiuzhou WANG Binbin PAN Mingxiang 2018空间科学学报2018,38,5:4
10Association between HER2 status and response to neoadjuvant anthracycline followed by paclitaxel plus carboplatin chemotherapy without trastuzumab in breast cancer显示文摘Background:We recently showed HER2-positive breast cancers are less likely to respond to neoadjuvant anthracycline chemotherapy.Here,we investigated whether HER2-positive breast cancers responded to sequential neoadjuvant anthracycline followed by paclitaxel plus carboplatin regimen in the absence of trastuzumab.Methods:Women(n=372) with operable primary breast cancer initially received two cycles of neoadjuvant anthracyclines,the clinical tumor response was assessed,then patients were received four cycles of paclitaxel plus carboplatin regimen.All the patients did not received trastuzumab treatment in the neoadjuvant setting.HER2 status was determined by immunohistochemistry and/or by fluorescence in situ hybridization in corebiopsy breast cancer tissue obtained before the neoadjuvant chemotherapy.Results:Eighteen percent(67/372) of patients achieved a pathologic complete response(p CR) in their breast.HER2-positive tumors had a significant higher p CR rate than HER2-negative tumors(33.0% versus 13.5%,P<0.001) in this cohort of 372 patients,and positive HER2 status remained an independent favorable predictor of p CR in a multivariate analysis [odds ratio(OR),2.26;95% confidence interval(CI),1.18 to 4.36,P=0.015].Furthermore,patients who responded to initial anthracycline regimens were more likely to respond to paclitaxel plus carboplatin than patients who did not(p CR,27.2% versus 14.6%,P=0.005).Patients with HER2-positive tumors exhibited a significant higher p CR rate than did patients with HER2-negative tumors in both anthracycline response group(40.5% versus 20.0%,P=0.025) and anthracycline non-response group(28.3% versus 11.3%,P=0.002).Conclusions:Under the circumstance of no trastuzumab treatment,women with HER2-positive cancers derive a large benefit from paclitaxel-carboplatin-based neoadjuvant chemotherapy.Lu Yao Juan Zhang Yiqiang Liu Tao Ouyang Jinfeng Li Tianfeng Wang Zhaoqing Fan Tie Fan Benyao Lin Yuntao Xie 2015Chinese Journal of Cancer Research2015,27,6:3
11Elevated CO2 differentially affects tobacco and rice defense against lepidopteran larvae via the jasmonic acid signaling pathway显示文摘Atmospheric CO_2 levels are rapidly increasing due to human activities. However, the effects of elevated CO_2(ECO_2) on plant defense against insects and the underlying mechanisms remain poorly understood. Here we show that ECO_2 increased the photosynthetic rates and the biomass of tobacco and rice plants, and the chewing lepidopteran insects Spodoptera litura and Mythimna separata gained less and more mass on tobacco and rice plants, respectively. Consistently, under ECO_2, the levels of jasmonic acid(JA), the main phytohormone controlling plant defense against these lepidopteran insects, as well as the main defense-related metabolites, were increased and decreased in insectdamaged tobacco and rice plants. Importantly, bioassaysand quantification of defense-related metabolites in tobacco and rice silenced in JA biosynthesis and perception indicate that ECO_2 changes plant resistance mainly by affecting the JA pathway. We further demonstrate that the defensive metabolites, but not total N or protein, are the main factors contributing to the altered defense levels under ECO_2. This study illustrates that ECO_2 changes the interplay between plants and insects, and we propose that crops should be studied for their resistance to the major pests under ECO_2 to predict the impact of ECO_2 on future agroecosystems.Chengkai Lu Jinfeng qi Christian Hettenhausen Yunting Lei Jingxiong Zhang Mou Zhang Cuiping Zhang Juan Song Jing Li Guoyan Cao Saif ul Malook Jianqiang Wu 2018Journal of Integrative Plant Biology2018,60,5:3
12MIT1, encoding a 15-cis-ζ-carotene isomerase, regulates tiller number and stature in rice显示文摘Lateral branching is an important determinant of shoot architecture and crop yield. The plant hormone strigolactone (SL) inhibits lateral bud outgrowth in various plant species. Deficiencies in SL biosynthesis and signal transduction result in excessive outgrowth of lateral buds (Stirnberg et al., 2002;Sorefan et al., 2003).Lihua Liu Mengmeng Ren Peng Peng Yan Chun Lu Li Jinfeng Zhao Jingjing Fang Lixiang Peng Jijun Yan Jinfang Chu Yiqin Wang Shoujiang Yuan Xueyong Li 2021Journal of Genetics and Genomics2021,48,1:3
13Low intensity near-infrared light promotes bone regeneration via circadian clock protein cryptochrome 1显示文摘Bone regeneration remains a great clinical challenge. Low intensity near-infrared(NIR) light showed strong potential to promote tissue regeneration, offering a promising strategy for bone defect regeneration. However, the effect and underlying mechanism of NIR on bone regeneration remain unclear. We demonstrated that bone regeneration in the rat skull defect model was significantly accelerated with low-intensity NIR stimulation. In vitro studies showed that NIR stimulation could promote the osteoblast differentiation in bone mesenchymal stem cells(BMSCs) and MC3T3-E1 cells, which was associated with increased ubiquitination of the core circadian clock protein Cryptochrome 1(CRY1) in the nucleus. We found that the reduction of CRY1 induced by NIR light activated the bone morphogenetic protein(BMP) signaling pathways, promoting SMAD1/5/9 phosphorylation and increasing the expression levels of Runx2 and Osterix. NIR light treatment may act through sodium voltage-gated channel Scn4a, which may be a potential responder of NIR light to accelerate bone regeneration. Together, these findings suggest that low-intensity NIR light may promote in situ bone regeneration in a CRY1-dependent manner, providing a novel, efficient and non-invasive strategy to promote bone regeneration for clinical bone defects.Jinfeng Peng Jiajia Zhao Qingming Tang Jinyu Wang Wencheng Song Xiaofeng Lu Xiaofei Huang Guangjin Chen Wenhao Zheng Luoying Zhang Yunyun Han Chunze Yan Qian Wan Lili Chen 2022International Journal of Oral Science2022,14,4:2
14Rapid estimation of soil heavy metal nickel content based on optimized screening of near-infrared spectral bands显示文摘In near-infrared spectroscopy,the traditional feature band extraction method has certain limitations.Therefore,a band extraction method named the three-step extraction method was proposed.This method combines characteristic absorption bands and correlation coefficients to select characteristic bands corresponding to various spectral forms and then uses stepwise regression to eliminate meaningless variables.Partial least squares regression(PLSR)and extreme learning machine(ELM)models were used to verify the effect of the band extraction method.Results show that the differential transformation of the spectrum can effectively improve the correlation between the spectrum and nickel(Ni)content.Most correlation coefficients were above 0.7 and approximately 20%higher than those of other transformation methods.The model effect established by the feature variable selection method based on comprehensive spectral transformation is only slightly affected by the spectral transformation form.Infive types of spectral transformation,the RPD values of the proposed method were all within the same level.The RPD values of the PLSR model were concentrated between 1.6 and 1.8,and those of the ELM model were between 2.5 and2.9,indicating that this method is beneficial for extracting more complete spectral features.The combination of the three-step extraction method and ELM algorithm can effectively retain important bands associated with the Ni content of the soil.The model based on the spectral band selected by the three-step extraction method has better prediction ability than the other models.The ELM model of the first-order differential transformation has the best prediction accuracy(RP^2=0.923,RPD=3.634).The research results provide some technical support for monitoring heavy metal content spectrum in local soils.Qian Lu Shijie Wang Xiaoyong Bai Fang Liu Shiqi Tian Mingming Wang Jinfeng Wang 2020Acta Geochimica2020,39,1:2
15Value of pre-treatment biomarkers in prediction of response to neoadjuvant endocrine therapy for hormone receptor-positive postmenopausal breast cancer显示文摘Objective: To determine the predictive ability of biomarkers for responses to neoadjuvant endocrine therapy (NET) in postmenopausal breast cancer. Methods: Consecutive 160 postmenopausal women with T 1-3 N 0-1 M 0 hormone receptor (HR)-positive invasive breast cancer were treated with anastrozole for 16 weeks before surgery. New slides of tumor specimens taken before and after treatment were conducted centrally for biomarker analysis and classified using the Applied Imaging Ariol MB-8 system. The pathological response was evaluated using the Miller & Payne classification. The cell cycle response was classified according to the change in the Ki67 index after treatment. Multivariable logistic regression analysis was used to calculate the combined index of the biomarkers. Receiver operating characteristic (ROC) curves were used to determine whether parameters may predict response. Results: The correlation between the pathological and cell cycle responses was low (Spearman correlation coefficient =0.241, P<0.001; Kappa value =0.119, P=0.032). The cell cycle response was significantly associated with pre-treatment estrogen receptor (ER) status (P=0.001), progesterone receptor (PgR) status (P<0.001), human epidermal growth factor receptor 2 (Her-2) status (P=0.050) and the Ki67 index (P<0.001), but the pathological response was not correlated with these factors. Pre-treatment ER levels [area under the curve (AUC) =0.634, 95% confidence interval (95% CI), 0.534-0.735, P=0.008] and combined index of pre-treatment ER and PgR levels (AUC =0.684, 95% CI, 0.591-0.776, P<0.001) could not predict the cell cycle response, but combined index including per-treatment ER/PR/Her-2/Ki67 expression levels could (AUC =0.830, 95% CI, 0.759-0.902, P<0.001). Conclusions: The combined use of pre-treatment ER/PgR/Her-2/Ki67 expression levels, instead of HR expression levels, may predict the cell cycle response to NET.Min Ying Yingjian He Meng Qi Bin Dong Aiping Lu Jinfeng Li Yuntao Xie Tianfeng Wang Benyao Lin Tao Ouyang 2013Chinese Journal of Cancer Research2013,25,4:2
16Probiotic properties of Lactobacillus strains isolated from Tibetan Kefir grains显示文摘ZHENG Yongchen LU Yingli WANG Jinfeng 2013Plos One2013,8,7:1
17Monitoring of Gene Expression Profiles and Isolation of Candidate Genes Involved in Pollination and Fertilization in Rice (Oryza Sativa L.) with a 10K cDNA Microarray显示文摘Lefu Lan Wei Chen Ying Lai Jinfeng Suo Zhaosheng Kong Can Li Ying Lu Yujun Zhang Xiangyu Zhao Xiansheng Zhang Yansheng Zhang Bin Han Jing Cheng Yongbiao Xue 2004Plant Molecular Biology2004,,4:1
18Discussion of 'Optimization of Dynamic Vibration Absorbers over a Frequency Band' by Domingos Alves Rade,& Valder Steffen JR显示文摘Lu Yi Zhang Jinfeng Gu Zhongquan 2006Mechanical Systems and Signal Processing2006,20,1:1
19Perception of the COVID-19 Epidemic and Acceptance of Vaccination Among Healthcare Workers Prior to Vaccine Licensure——Beijing Municipality,China,May-July 2020显示文摘Summary What is already known about this topic?The coronavirus disease 2019(COVID-19)vaccine development has been progressing,but acceptance of the new vaccines by healthcare workers(HCWs)was not well known prior to approval of COVID-19 vaccines in China.What is added by this report?Luodan Suo Rui Ma Zhongzhan Wang Tian Tang Haihong Wang Fang Liu Jinfeng Tang Xinghui Peng Xue Guo Li Lu Xinghuo Pang 2021China CDC weekly2021,3,27:1
20Mechanochemical sulfidization of nonferrous metal oxides by grinding with sulfur and iron显示文摘WANG Jun LU Jinfeng ZHANG Qiwu 2003Industrial & Engineering Chemistry Research2003,23,42:1
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