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| 1 | Anthropogenic emission inventories in China:a review显示文摘The development of reliable anthropogenic emission inventories is essential for both understanding the sources of air pollution and designing effective air-pollution-control measures in China. However, it is challenging to quantify emissions in China accurately, given the variety of contributing sources, the complexity of the technology mix and the lack of reliable measurements. Over the last two decades,tremendous efforts have been made to improve the accuracy of emission inventories, and significant improvements have been realized. More reliable statistics and survey-based data have been used to reduce the uncertainties in activity rates and technology distributions. Local emission factors and source profiles covering various sources have been measured and reported. Based on these local databases, improved emission inventory models have been developed for power plants, large industrial plants and the residential,transportation and agricultural sectors. In this paper, we review the progress that has been made in developing inventories of anthropogenic emissions in China. We first highlight the major updates that have been made to emission inventory models and the underlying data by source category. We then summarize the sector-based estimates of emissions of different species contained in current inventories. The progress that has been made in the development of model-ready emissions is also presented. Finally, we suggest future directions for further improving the accuracy of emission inventories in China. | Meng Li Huan Liu Guannan Geng Chaopeng Hong Fei Liu Yu Song Dan Tong Bo Zheng Hongyang Cui Hanyang Man Qiang Zhang Kebin He | 2017 | National Science Review2017，4，6： | 100 |
| 2 | Enhanced secondary pollution offset reduction of primary emissions during COVID-19 lockdown in China显示文摘To control the spread of the 2019 novel coronavirus(COVID-19),China imposed nationwide restrictions on the movement of its population(lockdown)after the Chinese New Year of 2020,leading to large reductions in economic activities and associated emissions.Despite such large decreases in primary pollution,there were nonetheless several periods of heavy haze pollution in eastern China,raising questions about the well-established relationship between human activities and air quality.Here,using comprehensive measurements and modeling,we show that the haze during the COVID lockdown was driven by enhancements of secondary pollution.In particular,large decreases in NOx emissions from transportation increased ozone and nighttime NO_(3)radical formation,and these increases in atmospheric oxidizing capacity in turn facilitated the formation of secondary particulate matter.Our results,afforded by the tragic natural experiment of the COVID-19 pandemic,indicate that haze mitigation depends upon a coordinated and balanced strategy for controlling multiple pollutants. | Xin Huang Aijun Ding Jian Gao Bo Zheng Derong Zhou Ximeng Qi Rong Tang Jiaping Wang Chuanhua Ren Wei Nie Xuguang Chi Zheng Xu Liangduo Chen Yuanyuan Li Fei Che Nini Pang Haikun Wang Dan Tong Wei Qin Wei Cheng Weijing Liu Qingyan Fu Baoxian Liu Fahe Chai Steven JDavis Qiang Zhang Kebin He | 2021 | National Science Review2021，8，2： | 47 |
| 3 | Effects of Traditional Chinese Medicine Shensong Yangxin Capsules on Heart Rhythm and Function in Congestive Heart Failure Patients with Frequent Ventricular Premature Complexes:A Randomized, Double-blind, Multicenter Clinical Trial显示文摘 | Xi Wang Dan HU Song Dang He Huang Cong-Xin Huang Ming-Jie Yuan Yan-Hong Tang Qing-Shan Zheng Fang Yin Shu Zhang Bo-Li Zhang Run-Lin Gao | 2017 | Chinese Medical Journal2017，，14： | 33 |
| 4 | Clinical significance of K-ras and BRAF mutations in Chinese colorectal cancer patients显示文摘AIM:To identify and assess mutations in the K-ras and BRAF genes in a cohort of Chinese patients with colorectal cancer (CRC) for their association with various clinicopathological parameters and prognosis.METHODS:Genomic DNA was isolated from frozen tissues.Pyrosequencing analysis was conducted to detect mutations in the K-ras (codons 12,13,and 61) and BRAF genes (codon 600).Statistical analysis was carried out using SPSS-15.0 software.RESULTS:Among the 118 colorectal cancer patients,we detected 41 (34.7%) mutations in the K-ras gene.Mutation frequencies at codon 12 and codon 13 were 23.7% (28/118) and 10.2% (12/118),respectively.Only one patient harbored a point mutation at codon 61 (0.8%,1/118).Gender was the only factor that showed an obvious relationship with K-ras gene mutation (female 44.7% vs male 28.2%,P=0.037).Other clinicopathological features,such as age,location of the tumor,tumor differentiation,Tumor,Node and Metastases classification,and the Union for International Cancer Control staging,showed no positive relationship with K-ras gene mutations.No significant correlation was observed between the presence of K-ras mutations (codons 12,13,and 61) and the survival of the patients.BRAF mutations were rare,and only two patients (1.7%) harbored a detectable mutation at codon 600.CONCLUSION:K-ras gene mutation is a common event in our 118 Chinese CRC patients,with an obvious relationship with gender.However,it seems not to be an independent prognostic factor in CRC patients.The BRAF gene is rarely mutated in Chinese CRC patients. | Hong Shen Ying Yuan Han-Guang Hu Xiao-Xian Ye Mo- Dan Li Xian Zhong Wei-Jia Fang Shu Zheng | 2011 | World Journal of Gastroenterology2011，17，6： | 29 |
| 5 | Indoor Allergen Levels and Household Distributions in Nine Cities Across China显示文摘Objective Chinese allergic subjects have high levels of sensitization to house dust mite(HDM) and other indoor allergens. This study quantifies common indoor allergen levels in Chinese households. Methods Dust samples were collected from nine cities. Major allergens Der p 1 and Der f 1 from Dermatophagoides pteronyssinus and D. farinae, and specific antigens of Blomia tropicalis, Tyrophagus putrescentiae, Acarus siro, and cockroach species Blattella germanica and Periplaneta americana were measured by ELISA. Results HDM allergens were found in dust samples from bedding in 95% of the Chinese households. The median levels varied from <0.006 to 9.2 μg/g of dust, depending on the city. The percentages of households having HDM allergen levels associated with the risk of developing allergy sensitization and asthma were 65% and 25%, respectively. Specific antigens of the storage mite and cockroach were only found in samples from the southern and tropical regions of China. Levels of mite allergens were generally higher in samples from bedding compared to samples from the living room, even for storage mites, whereas levels of cockroach antigens were higher in the living room samples. Conclusion HDM allergens are present in bedding dust samples from most Chinese households. Cities in southern and central China have relatively high levels of HDM major allergens compared to cities in northern and western China. Antigens of storage mites and cockroaches are not as common as HDM allergens. | ZHENG Yi Wu LAI Xu Xin ZHAO De Yu ZHANG Chun Qing CHEN Jian Jun ZHANG Luo WEI Qing Yu CHEN Shi LIU En Mei NORBACK Dan GJESING Birgitte ZHONG Nan Shan SPANGFORT D.Michael | 2015 | Biomedical and Environmental Sciences2015，28，10： | 24 |
| 6 | Ten cities cross-sectional questionnaire survey of children asthma and other allergies in China显示文摘Asthma,rhinitis and eczema(allergic or non-allergic)have increased throughout the world during the last decades,especially among children.Changes in the indoor environment are suspected to be important causes.China has experienced a dramatic change in indoor environmental exposures during the past two decades.However,such changes and their associations with children’s asthma and other health aspects have not been thoroughly studied.China,Children,Homes,Health(CCHH),Phase I,was a cross-sectional questionnaire survey of 48219 children 1–8 years old in 10 Chinese cities during 2010–2012.The questionnaire includes the International Study of Asthma and Allergies in Childhood(ISAAC)core health questions and additional questions regarding housing,life habits and outdoor environment.In health analyses,children aged 3–6 years old were included.The prevalences of doctor diagnosed asthma varied from 1.7%to 9.8%(mean 6.8%),a large increase from 0.91%in 1999 and 1.50%in2000.The prevalence of wheeze,rhinitis and atopic eczema(last 12 months)varied from 13.9%to 23.7%,24.0%to 50.8%and4.8%to 15.8%,respectively.Taiyuan had the lowest prevalences of all illnesses and Shanghai the highest,except for wheezewhere the highest value was for Urumqi.We found(1)no obvious association between disease prevalences and ambient PM10concentrations and(2)higher prevalences of disease in humid climates with hot summers and cold winters,but with no centrally heated buildings.Associations between the diseases and economic status as indexed by Gross Domestic Product(GDP)requires further study. | ZHANG YinPing LI BaiZhan HUANG Chen YANG Xu QIAN Hua DENG QiHong ZHAO ZhuoHui LI AnGui ZHAO JiaNing ZHANG Xin QU Fang HU Yu YANG Qin WANG Juan ZHANG Ming WANG Fang ZHENG XiaoHong LU Chan LIU ZhiJian SUN YueXia MO JinHan ZHAO YiLi LIU Wei WANG TingTing NORBCK Dan BORNEHAG Carl-Gustaf SUNDELL Jan | 2013 | Chinese Science Bulletin2013，58，34： | 22 |
| 7 | Pathways of China's PM;air quality 2015–2060 in the context of carbon neutrality显示文摘Clean air policies in China have substantially reduced particulate matter(PM;) air pollution in recent years,primarily by curbing end-of-pipe emissions.However,reaching the level of the World Health Organization(WHO) guidelines may instead depend upon the air quality co-benefits of ambitious climate action.Here,we assess pathways of Chinese PM;air quality from 2015 to 2060 under a combination of scenarios that link global and Chinese climate mitigation pathways(i.e.global 2℃-and 1.5℃-pathways,National Determined Contributions(NDC) pledges and carbon neutrality goals) to local clean air policies.We find that China can achieve both its near-term climate goals(peak emissions) and PM;air quality annual standard(35 μg/m;) by 2030 by fulfilling its NDC pledges and continuing air pollution control policies.However,the benefits of end-of-pipe control reductions are mostly exhausted by 2030,and reducing PM;exposure of the majority of the Chinese population to below 10 μg/m;by 2060 will likely require more ambitious climate mitigation efforts such as China’ s carbon neutrality goals and global1.5℃-pathways.Our results thus highlight that China’s carbon neutrality goals will play a critical role in reducing air pollution exposure to the level of the WHO guidelines and protecting public health. | Jing Cheng Dan Tong Qiang Zhang Yang Liu Yu Lei Gang Yan Liu Yan Sha Yu Ryna Yiyun Cui Leon Clarke Guannan Geng Bo Zheng Xiaoye Zhang Steven JDavis Kebin He | 2021 | National Science Review2021，8，12： | 23 |
| 8 | Dual Extended Kalman Filter for Combined Estimation of Vehicle State and Road Friction显示文摘Vehicle state and tire-road adhesion are of great use and importance to vehicle active safety control systems. However, it is always not easy to obtain the information with high accuracy and low expense. Recently, many estimation methods have been put forward to solve such problems, in which Kalman filter becomes one of the most popular techniques. Nevertheless, the use of complicated model always leads to poor real-time estimation while the role of road friction coefficient is often ignored. For the purpose of enhancing the real time performance of the algorithm and pursuing precise estimation of vehicle states, a model-based estimator is proposed to conduct combined estimation of vehicle states and road friction coefficients. The estimator is designed based on a three-DOF vehicle model coupled with the Highway Safety Research Institute(HSRI) tire model; the dual extended Kalman filter (DEKF) technique is employed, which can be regarded as two extended Kalman filters operating and communicating simultaneously. Effectiveness of the estimation is firstly examined by comparing the outputs of the estimator with the responses of the vehicle model in CarSim under three typical road adhesion conditions(high-friction, low-friction, and joint-friction). On this basis, driving simulator experiments are carried out to further investigate the practical application of the estimator. Numerical results from CarSim and driving simulator both demonstrate that the estimator designed is capable of estimating the vehicle states and road friction coefficient with reasonable accuracy. The DEKF-based estimator proposed provides the essential information for the vehicle active control system with low expense and decent precision, and offers the possibility of real car application in future. | ZONG Changfu HU Dan ZHENG Hongyu | 2013 | Chinese Journal of Mechanical Engineering2013，26，2： | 18 |
| 9 | Rapid improvement of PM2.5 pollution and associated health benefits in China during 2013–2017显示文摘Exposure to fine particulate matter(PM2.5)is known to harm public health.In China,after implementation of aggressive emissions control measures under the Action Plan of Air Pollution Prevention and Control(2013-2017),air quality has significantly improved.In this work,we investigated changes in PM2.5 exposure and the associated health impacts in China for the period 2013-2017.We used an optimal estimator of PM2.5 combining in-situ observations,satellite measurements,and simulations from a chemical transport model to derive the spatial and temporal variations in PM2.5 exposure,and then used welldeveloped exposure-response functions to estimate the premature deaths attributable to PM2.5 exposure.We found that national population-weighed annual mean PM2.5 concentrations decreased from 67.4μgm-3 in 2013 to 45.5μgm-3 in 2017(32%reduction).This rapid decrease in PM2.5 pollution led to a 14%reduction in premature deaths due to long-term exposure.We estimated that,during 2013-2017,the premature deaths attributable to long-term PM2.5 exposure decreased from 1.2 million(95%CI:1.0,1.3;fraction of total mortality:13%)in 2013 to 1.0 million(95%CI:0.9,1.2;10%)in 2017.Despite the rapid decrease in annual mean PM2.5 concentrations,health benefits associated with reduced long-term exposure were limited,because for many cities,the PM2.5 levels remain at the portion where the exposure-response function is less steeper than that at the lowconcentration end.We also found that the deaths associated with acute exposure decreased by 61%during 2013-2017 due to rapid reduction in the number of heavily polluted days.Our results confirm that clean air policies in China have mitigated the air pollution crisis;however,continuous emissions reduction efforts are required to protect citizens from air pollution. | Tao XUE Jun LIU Qiang ZHANG Guannan GENG Yixuan ZHENG Dan TONG Zhu LIU Dabo GUAN Yu BO Tong ZHU Kebin HE Jiming HAO | 2019 | Science China Earth Sciences2019，62，12： | 17 |
| 10 | Impact of China’s Air Pollution Prevention and Control Action Plan on PM2.5 chemical composition over eastern China显示文摘China promulgated the Air Pollution Prevention and Control Action Plan(the Action Plan)in 2013 and developed stringent control measures to mitigate fine particulate matter(PM2.5) pollution.Here,we investigated the PM2.5 chemical composition changes over eastern China associated with the Action Plan during 2013-2017 using satellite-based PM2.5 chemical composition data derived using CMAQ simulations and satellite inputs.The PM2.5 concentrations decreased considerably during this time as a result of the reductions in all chemical species in PM2.5.The population-weighted mean concentrations over eastern China decreased from 11.1 to 6.7μgm-3 for SO42-,13.8-13.1μgm-3 for NO3-,7.4-5.8μgm-3 for NH4+,9.9-8.4μgm-3 for OM,4.6-3.8μg m-3 for BC and 12.9-9.6μg m-3 for other species in PM2.5.SO42-had the largest reduction of 40%,while NO3-had the lowest reduction of 5%,resulting in a greater fraction of NO3-and a smaller fraction of SO42-in PM2.5.Among the three key regions,Beijing-Tianjin-Hebei had the largest reduction in PM2.5 and its chemical compositions.The decrease in SO42-concentrations was in line with the reduction of SO2 emissions,and the major driver of the SO2 emission reductions was the industrial sector.The decrease in NO3 concentrations was limited because the decrease in SO2 emissions and the stable NH3 emissions facilitated the formation of NO3-from HNO3,which partially offset the reduction in NOx emissions driven by the power sector.To mitigate PM2.5 pollution more effectively,future efforts are needed to reduce NH3 emissions. | Guannan GENG Qingyang XIAO Yixuan ZHENG Dan TONG Yuxuan ZHANG Xiaoye ZHANG Qiang ZHANG Kebin HE Yang LIU | 2019 | Science China Earth Sciences2019，62，12： | 16 |
| 11 | MiR-27a Promotes Hepatocellular Carcinoma Cell Proliferation Through Suppression of its Target Gene Peroxisome Proliferator-activated Receptor γ显示文摘 | Shuo Li Jing Li Bing-Yuan Fei Dan Shao Yue Pan Zhan-Hao MO Bao-Zhen Sun Dan Zhang Xiao Zheng Ming Zhang Xue-Wen Zhang Li Chen | 2015 | Chinese Medical Journal2015，，7： | 15 |
| 12 | Upregulation of CD81 in trophoblasts induces an imbalance of Treg/Th17 cells by promoting IL-6 expression in preeclampsia显示文摘The disturbance of maternal immune tolerance to a semiallogeneic fetus is recognized as one of the key pathologies of preeclampsia(PE),in which an imbalance between the inflammation-limiting regulatory T cells(Tregs)and the inflammationmediating Th17 cells plays an essential role.Previously,we reported that the abnormal upregulation of tetraspannin CD81 in trophoblast cells(fetal component)participated in the pathogenesis of PE.However,as one of the potential immune regulatory molecules,whether CD81 induces PE by interfering with the balance of the maternal immune system has not yet been clarified.Thus,we investigated the relationship between the upregulation of CD81 in trophoblast cells and the imbalance of Treg and Th17 cells in mothers.Here,we demonstrated that upregulation of CD81 in trophoblast cells was accompanied by a decrease in Treg cells and an increase in Th17 cells in both the basal plate(placental maternal side)and peripheral blood of patients with PE.In vitro culture of naïve T cells with medium from the CD81-overexpressing trophoblast cell line HTR-8 resulted in enhanced differentiation of T cells into Th17 cells and decreased the formation of Tregs,which was dependent on the paracrine signaling of IL-6 in trophocytes,induced by CD81.In a CD81-induced PE rat model,we found a significant shift of T cell differentiation towards Th17 cells,and administration of IL-6 antibody mitigated the PE phenotype and the imbalance of the Treg/Th17 cells.These results define a vital regulatory cascade involving trophocyte-derived CD81,IL-6,and maternal Treg/Th17 cells in the pathogenesis of PE and suggests new therapeutic approaches based on CD81 and IL-6 downregulation to prevent human PE. | Hailin Ding Yimin Dai Yi Lei Zhiyin Wang Dan Liu Ruotian Li Li Shen Ning Gu Mingming Zheng Xiangyu Zhu Guangfeng Zhao Yali Hu | 2019 | Cellular & Molecular Immunology2019，16，3： | 15 |
| 13 | A cotton gene encoding a plasma membrane aquaporin is involved in seedling development and in response to drought stress显示文摘棉花(Gossypium hirsutum ) ,世界范围的最重要的纺织品庄稼,经常在它的生长期间遇到象干旱和涝灾那样的不能生活的应力季节(夏天) ,和它的生产率被不利因素显著地限制。为了调查这的分子的改编机制,种种类到不能生活的应力,编码血浆膜的基因内在的蛋白质(果仁) 在棉花被孤立,并且指定了为 GhPIP2; 7。量的反向的 transcriptase 聚合酶链反应分析显示了那 GhPIP2; 7 优先地在子叶和叶子被表示,并且它的表示在在干旱处理以后的叶子是起来调整的。GhPIP2 驾驶的 GUS 基因的强壮的表示; 7 倡导者在 5- 的叶子被检测到 10-day-old 当幼苗进一步发展了,转基因的 Arabidopsis 幼苗,而是 GUS 活动逐渐地变得弱。GhPIP2; 7 倡导者活动被甘露糖醇处理显著地也导致。而且,酵母房间过去表示的 GhPIP2; 7 显示的相对更高的干旱忍耐,与控制相比。GhPIP2 的在表示上; 7 在提高的 Arabidopsis 种公差到干旱应力。一起,这些数据建议了那 GhPIP2; 7 基因可以涉及叶开发并且响应干旱应力。 | Jie Zhang Dengdi Li Dan Zou Fang Luo Xiulan Wang Yong Zheng Xuebao Li | 2013 | Acta Biochimica et Biophysica Sinica2013，45，2： | 14 |
| 14 | CapOX as neoadjuvant chemotherapy for locally advanced operable colon cancer patients: a prospective single-arm phase Ⅱ trial显示文摘Objective: The aim of this prospective, single-arm phase II trial was to confirm the safety and efficacy of neoadjuvant chemotherapy(NAC) using oxaliplatin plus capecitabine(Cap OX) for patients with operable locally advanced colon cancer(CC).Methods: Patients with computed tomography-defined T4 or lymph node-positive CCs were enrolled. After radiological staging, patients were treated with at least 2 cycles of NAC consisting of 130 mg/m2 oxaliplatin on d 1,plus 1,000 mg/m2 capecitabine twice daily for 14 d every 3 weeks, followed by surgery, and then with the rest cycles of adjuvant chemotherapy. Radiological response was evaluated after 2 cycles of NAC. Tumor response, treatment toxicity, and surgical complications were recorded. The pathological response to therapy was evaluated according to the tumor regression grade(TRG) score. The primary endpoint was pathologic tumor response. This trial is registered in Clinical Trials.gov(No: NCT02415829).Results: Forty-seven patients were enrolled in the study. Forty-two patients completed the planned treatments.The total radiological response rate was 68%(32/47), including complete and partial response rates of 2%(1/47)and 66%(31/47), respectively. Stable disease was observed in 32%(15/47) and progressive disease was observed in none. Complete pathologic response, major regression, and at least moderate regression were achieved in 1(2%), 2(4%), and 29(62%) patients, respectively. Four patients developed grade 3 treatment toxicities. One patient with wound infection occurred after operation(1/47, 2%). There was no treatment-related death.Conclusions: Our results suggest that NAC with Cap OX is an effective and safe treatment option for patients with locally advanced CCs. | Fangqi Liu Li Yang Yuchen Wu Cong Li Jiang Zhao Adili Keranmu Hongtu Zheng Dan Huang Lei Wang Tong Tong Junyan Xu Ji Zhu Sanjun Cai Ye Xu | 2016 | Chinese Journal of Cancer Research2016，28，6： | 14 |
| 15 | Recombinant CC16 protein inhibits the production of pro-inflammatory cytokines via NF-KB and p38 MAPK pathways in LPS-activated RAW264,7 macrophages显示文摘积累的证据显示克莱拉房间 protein-16 (CC16 ) 有反煽动性的功能,尽管深奥分子的小径完全没被阐明。这里,我们评估了效果肿瘤坏死因素 alpha (TNF-) 的表示上的 recombinant 老鼠 CC16 (rCC16 ) , interleukin-6 (IL-6 ) ,和在 lipopolysaccharide (LPS ) 的 IL-8 刺激了老鼠巨噬细胞(RAW264.7 房间) 并且探索了内在的分子的机制。rCC16 在两个禁止了导致 LPS 的 TNF- , IL-6,和 IL-8 表示,这被发现送信人 ribonucleicacid (mRNA ) 水平和蛋白质以一种集中依赖者方式铺平,由即时反向的 transcriptase 聚合酶链反应和连接酶的 immunosorbent 试金示威了。如此的镇压效果被 transcriptional 活动和原子因素(NF ) 的脱氧核糖核酸酸绑定活动的抑制伴随 -B 然而并非使活跃之物蛋白质(AP )-1。西方的污点分析进一步表明 rCC16 禁止了原子 NF-B 和 NF-B 禁止的蛋白质 IB,和 p38 的 cytosolic NF-B, phosphorylation 和减小的减小的增加激活 mitogen 的蛋白质 kinase (MAPK ) 依赖者由在它的 p65 子单元的 Ser276 的 phosphorylation 的 NF-B 激活。而且, rCC16 被发现没另外在c6月N终端 kinase ,c6月,或c-Jun.的原子 translocation 的 phosphorylation 上有效果,TNF-的减小, IL-6 ,并且 IL-8 被颠倒内长的uteroglobin有约束力的蛋白质的水平什么时候被 RNA 干扰在 对待rCC16 、 对待LPS 的 RAW264.7 房间减少。我们的数据建议 rCC16 由在 RAW264.7 房间使 NF-B 和 p38 MAPK 然而并非 AP-1 失去活性压制调停 LPS 的煽动性的调停人 TNF- , IL-6,和 IL-8 生产。 | Min Pang Yangyang Yuan Dong Wang Ting Li Dan Wang Xiaohong Shi Min Guo Chunfang Wang Xinri Zhang Guoping Zheng Baofeng Yu Hailong Wang | 2017 | Acta Biochimica et Biophysica Sinica2017，49，5： | 14 |
| 16 | Theoretical Analysis and Numerical Simulation of the Static and Dynamic Characteristics of Hydrostatic Guides Based on Progressive Mengen Flow Controller显示文摘The oil film thickness of oil hydrostatic guide with constant pressure supply based on capillary restrictor is greatly affected by load,and this kind of hydrostatic guide is usually applied to the machine tools with moderate load.The static and dynamic characteristics of the guide have been studied by using some theoretical,numerical and experimental approaches,and some methods and measures have been proposed to improve its performances.The hydrostatic guide based on progressive mengen(PM) flow controller is especially suitable for the heavy numerical control(NC) machine tools.However,few literatures about the research on the static and dynamic characteristics of the hydrostatic guides based on PM flow controller are reported.In this paper,the formulae are derived for analyzing the static and dynamic characteristics of hydrostatic guides with rectangle pockets and PM flow controller according to the theory of hydrostatic bearing.On the basis of the analysis of hydrostatic bearing with circular pocket,some equations are derived for solving the static pressure,volume pressure and squeezing pressure which influence the dynamic characteristics of hydrostatic guides with rectangle pocket.The function and the influencing factors of three pressures are clarified.The formulae of amplitude-frequency characteristics and dynamic stiffness of the hydrostatic guide system are derived.With the help of software MATLAB,programs are coded with C++ language to simulate numerically the static and dynamic characteristics of the hydrostatic guide based on PM flow controller.The simulation results indicate that the sensitive oil volume between the outlet of the PM flow controller and the guide pocket has the greatest influence on the characteristics of the guide,and it should be reduced as small as possible when the field working condition is met.Choosing the oil with a greater viscosity is also helpful in improving the dynamic performance of hydrostatic guides.The research work has instructing significance for analyzing and designing the guide with PM flow controller. | GAO Dianrong ZHENG Dan ZHANG Zuochao | 2010 | Chinese Journal of Mechanical Engineering2010，23，6： | 13 |
| 17 | Tailoring color emissions from N-doped graphene quantum dots for bioimaging applications显示文摘Unlike inorganic quantum dots,fluorescent graphene quantum dots(GQDs)display excitation-dependent multiple color emission.In this study,we report N-doped GQDs(N-GQDs)with tailored single color emission by tuning p-conjugation degree,which is comparable to the inorganic quantum dot.Starting from citric acid and diethylenetriamine,as prepared N-GQDs display blue,green,and yellow light emission by changing the reaction solvent from water,dimethylformamide(DMF),and solvent free.The X-ray photoelectron spectroscopy,ultraviolet-visible spectra results clearly show the N-GQDs with blue emission(N-GQDs-B)have relatively short effective conjugation length and more carboxyl group because H_(2)O is a polar protic solvent,which tends to donate proton to the reagent to depress the H_(2)O elimination reaction.On the other hand,the polar aprotic solvent(DMF)cannot donate hydrogen,the elimination of H_(2)O is promoted and more nitrogen units enter GQD framework.With the increase of effective p-conjugation length and N content,the emission band of N-GQDS red-shifts to green and yellow.We also demonstrate that N-GQDs could be a potential great biomarker for fluorescent bioimaging. | Dan Qu Min Zheng Jing Li Zhigang Xie Zaicheng Sun | 2015 | Light(Science & Applications)2015，4，1： | 13 |
| 18 | Garcinol inhibits esophageal cancer metastasis by suppressing the p300 and TGF-β1 signaling pathways显示文摘Metastasis causes the main lethality in esophageal cancer patient.Garcinol,a natural compound extracted from Gambogic genera,is a histone acetyltransferase(HAT)inhibitor that has shown anticancer activities such as cell cycle arrest and apoptosis induction.In this study,we investigated the effects of garcinol on the metastasis of esophageal cancer in vitro and in vivo.We found that garcinol(5-15μM)dose-dependently inhibited the migration and invasion of human esophageal cancer cell lines KYSE150 and KYSE450 in wound healing,transwell migration,and Matrigel invasion assays.Furthermore,garcinol treatment dose-dependently decreased the protein levels of p300/CBP(transcriptional cofactors and HATs)and p-Smad2/3 expression in the nucleus,thus impeding tumor cell proliferation and metastasis.Knockdown of p300 could inhibit cell metastasis,but CBP knockdown did not affect the cell mobility.It has been reported that TGF-β1 stimulated the phosphorylation of Smad2/3,which directly interact with p300/CBP in the nucleus,and upregulating HAT activity of p300.We showed that garcinol treatment dose-dependently suppressed TGF-β1-activated Smad and non-Smad pathway,inhibiting esophageal cancer cell metastasis.In a tail vein injection pulmonary metastasis mouse model,intraperitoneal administration of garcinol(20 mg/kg)or 5-FU(20 mg/kg)significantly decreased the number of lung tumor nodules and the expression levels of Ki-67,p300,and p-Smad2/3 in lung tissues.In conclusion,our study demonstrates that garcinol inhibits esophageal cancer metastasis in vitro and in vivo,which might be related to the suppression of p300 and TGF-β1 signaling pathways,suggesting the therapeutic potential of Garcinol for metastatic tumors. | Jing Wang Man Wu Dan Zheng Hong Zhang Yue Lv Li Zhang Hong-sheng Tan Hua Zhou Yuan-zhi Lao Hong-xi Xu | 2020 | Acta Pharmacologica Sinica2020，41，1： | 12 |
| 19 | Identification of aberrant cell cycle regulation in Epstein-Barr virus-associated nasopharyngeal carcinoma by cDNA microarray and gene set enrichment analysis显示文摘 | Wenling Zhang Zhaoyang Zeng Yanhong Zhou Wei Xiong Songqing Fan Lan Xiao Donghai Huang Zheng Li Dan Li Minghua Wu Xiaoling Li Shourong Shen Rong Wang Li Cao Ke Tang Guiyuan Li | 2009 | Acta Biochimica et Biophysica Sinica2009，41，5： | 11 |
| 20 | Herb-partitioned moxibustion alleviates colon injuries in ulcerative colitis rats显示文摘AIM To observe the effect of herb-partitioned moxibustion(HPM) on expression of colonic cytokines in ulcerative colitis(UC) rats.METHODS A UC rat model was established by protein immunization in combination with topical chemical stimulation.Rats in the HPM group(n = 8) received HPM at bilateral Tianshu(ST25) points.The gross injury and pathological scores of the colon were recorded.The expression profile of colonic cytokines was assayed using the protein microarray technique.Specific differential cytokines were selected and verified by ELISA.The corresponding Uni Prot Accessions of the differentially expressed cytokines were retrieved in the Uni Prot database.The pathways involved were analyzed with the help of the KEGG PATHWAY database.The DAVID database was used for functional cluster and pathway analysis.RESULTS HPM improved colon injuries in UC rats,manifested by accelerated repair of ulcers and alleviation of inflammation,and the gross injury and pathological scores both significantly decreased(P < 0.01).Fold change > 1.3 or < 0.77 was taken as the screening standard.There were 77 down-regulated and 9 up-regulated differentially expressed colonic cytokines in the HPM group compared with the model group,and expression of 20 differed significantly(P < 0.05).Twelve of the 20 significantly differentially expressed cytokines [β-catenin,interleukin-1 receptor 6(IL-1 R6),IL-1β,B7-1,nerve growth factor receptor,AMP-activated protein kinase-α1,neuropilin-2,orexin A,adipocyte differentiation-related protein,IL-2,Fas and Fas L] were up-regulated in the model group(n = 3,compared with the normal group) but downregulated in the HPM group(n = 3,compared with the model group).Functional cluster analysis showed that the differentially expressed colonic cytokines in the HPM group regulated apoptosis and protein phosphorylation.KEGG pathway analysis showed that 52 down-regulated and 7 up-regulated differentially expressed colonic cytokines in the HPM group had pathways.The pathways that interacted between the cytokines and their receptors accounted for the largest proportion(28 of the downregulated and 5 of the up-regulated cytokines).CONCLUSION HPM promotes the repair of colon injuries in UC rats,which is related to the regulation of several abnormally expressed cytokines. | Dan Zhang Yan-Bo Ren Kai Wei Jue Hong Yan-Ting Yang Li-Jie Wu Ji Zhang Zheng Shi Huan-Gan Wu Xiao-Peng Ma | 2018 | World Journal of Gastroenterology2018，24，30： | 11 |
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