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| 1 | Nitrous oxide production during nitrogen removal from domestic wastewater in lab-scale sequencing batch reactor显示文摘The production of N2O during nitrogen removal from real domestic wastewater was investigated in a lab-scale aerobic-anoxic sequencing batch reactor with a working volume of 14 L. The results showed that the total N2O-N production reached higher than 1.87 mg/L, and up to 4% of removed nitrogen was converted into N2O. In addition, N2O led to a much higher greenhouse effect than CO2 during aerobic reaction phase, this proved that N2O production could not be neglected. The N2O-N production during nitrification was 1.85 mg/L, whereas, during denitrification, no N2O was produced, nitrification was the main source of N2O production during nitrogen removal. Furthermore, during denitrification, the dissolved N2O at the end of aeration was found to be further reduced to N2. Denitrification thus had the potential of controlling N2O production. | LIU Xiuhong PENG Yi WU Changyong AKIO Takigawa PENG Yongzhen | 2008 | Journal of Environmental Sciences2008，20，6： | 17 |
| 2 | The effect of dissolved oxygen concentration on long-term stability of partial nitrification process显示文摘Dissolved oxygen(DO)concentration is regarded as one of the crucial factors to influence partial nitrification process.However,achieving and keeping stable partial nitrification under different DO concentrations were widely reported.The mechanism of DO concentration influencing partial nitrification is still unclear.Therefore,in this study two same sequencing batch reactors(SBRs)cultivated same seeding sludge were built up with realtime control strategy.Different DO concentrations were controlled in SBRs to explore the effect of DO concentration on the long-term stability of partial nitrification process at room temperature.It was discovered that ammonium oxidation rate(AOR)was inhibited when DO concentration decreased from 2.5 to 0.5 mg/L.The abundance of Nitrospira increased from 1011.5 to 1013.7 copies/g DNA,and its relative percentage increased from 0.056%to 3.2%during 190 operational cycles,causing partial nitrification gradually turning into complete nitrification process.However,when DO was 2.5 mg/L the abundance of Nitrospira was stable and AOB was always kept at 1010.7 copies/g DNA.High AOR was maintained,and stable partial nitrification process was kept.Ammonia oxidizing bacteria(AOB)activity was significantly higher than nitrite oxidizing bacteria(NOB)activity at DO of 2.5 mg/L,which was crucial to maintain excellent nitrite accumulation performance. | Bin Cui Qing Yang Xiuhong Liu Siting Huang Yubing Yang Zhibin Liu | 2020 | Journal of Environmental Sciences2020，32，4： | 12 |
| 3 | Major advances in studies of the physical geography and living environment of China during the past 70 years and future prospects显示文摘The natural environment provides material essentials for human survival and development. The characteristics,processes, regional differentiation and forcing mechanisms of the elements of the natural environment(e.g. geomorphology,climate, hydrology, soil, etc.) are the main objects of research in physical geography. China has a complex natural environment and huge regional differentiation and therefore it provides outstanding reserach opportunities in physical geography. This review summarizes the most important developments and the main contributions of research in the physical geography and human living environment in China during the past 70 years. The major topics addressed are the uplift of the Tibetan Plateau and the evolution of its cryosphere, the development of fluvial systems, the acidification of the vast arid region of the Asian interior, variations in the monsoon and westerly climate systems on multiple timescales, the development of lakes and wetlands, the watershed system model, soil erosion, past human-environment interactions, biogeography, and physical geographic zonality. After briefly introducing international research developments, we review the history of research in physical geography in China, focusing on the major achievements and major academic debates, and finally we summarize the status of current research and the future prospects. We propose that in the context of the national demand for the construction of an ecological civilization, we should make full use of the research findings of physical geography, and determine the patterns and mechanisms of natural environmental processes in order to continue to promote the continued contribution of physical geography to national development strategies, and to further contribute to the theory of physical geography from a global perspective. | Fahu CHEN Bojie FU Jun XIA Duo WU Shaohong WU Yili ZHANG Hang SUN Yu LIU Xiaomin FANG Boqiang QIN Xin LI Tingjun ZHANG Baoyuan LIU Zhibao DONG Shugui HOU Lide TIAN Baiqing XU Guanghui DONG Jingyun ZHENG Wei YANG Xin WANG Zaijun LI Fei Wang Zhenbo HU Jie WANG Jianbao LIU Jianhui CHEN Wei HUANG Juzhi HOU Qiufang CAI Hao LONG Ming JIANG Yaxian HU Xiaoming FENG Xingguo MO Xiaoyan YANG Dongju ZHANG Xiuhong WANG Yunhe YIN Xiaochen LIU | 2019 | Science China Earth Sciences2019，62，11： | 11 |
| 4 | Current state and future perspectives of sewer networks in urban China显示文摘中国当局和公众大部分忽略了下水道网络;然而,各种各样的问题与新下水道的增加构造全国正在出现。在中国的下水道网络建设,管理,和维护的当前的国家包括地在这研究被考察。为大约 4.44 亿个人,服务下水道线的 511,200 km 位于城市的区域。在 2014, 70 亿美元在下水道网络建设被投资。然而,下水道扩散率和人均的下水道长度是比在发达国家的那些显著地低的。在本地政府的下水道行政机构是不协调的。法律,规定,和标准是不完全的,并且一些惯例是非科学的。因为下水道腐蚀控制措施没被发射,下水道维护的未来状况是极其冷酷的。而且,检查和康复主要依靠传统的途径。相反,创新技术的全面市场份额由于高费用,资金缺乏,和技术限制是很低的。象班机倒置 cured-in-place 那样的途径尖叫,开车进入用餐的餐厅紫外轻治好的班机,和螺线创伤衬里主要在经济地发达的区域被使用。根据地位和问题分析,瓷器最高的优先级将是以后在下水道网络进行好攻击的维护工作。新技术线路,腐蚀控制 - 周期的设想的检查 - 无沟的康复,能是为在中国的未来下水道维护的最好的选择。为使用这条技术线路的指令和机会在这研究详细被讨论。最后,在在中国的下水道网络的开发的另外的因素被建议。 | Dong Huang Xiuhong Liu Songzhu Jiang Hongchen Wang Junyan Wang Yuankai Zhang | 2018 | Frontiers of Environmental Science & Engineering2018，12，3： | 5 |
| 5 | Genomic DNA methylation patterns in bovine preim-plantation embryos derived from in vitro fertilization显示文摘By using the approach of immunofluorescence staining with an antibody against 5-methylcytosine (5MeC), the present study detected the DNA methylation patterns of bovine zygotes and preimplanta-tion embryos derived from oocyte in vitro maturation (IVM), in vitro fertilization (IVF) and embryo in vitro culture (IVC). The results showed that: a) paternal-specific demethylation occurred in 61.5% of the examined zygotes, while 34.6% of them showed no demethylation; b) decreased methylation level was observed after the 8-cell stage and persisted through the morula stage, however methylation levels were different between blastomeres within the same embryos; c) at the blastocyst stage, the methyla-tion level was very low in inner cell mass, but high in trophectoderm cells. The present study suggests, at least partly, that IVM/IVF/IVC may have effects on DNA methylation reprogramming of bovine zygotes and early embryos. | HOU Jian, LIU Lei, LEI TingHua, CUI XiuHong, AN XiaoRong & CHEN YongFu State Key Laboratory for Agrobiotechnology and Department of Animal Physiology, College of Biological Science, China Agricultural University, Beijing 100094, China | 2007 | Science China(Life Sciences)2007，50，1： | 4 |
| 6 | MECHANICAL PROPERTIES AND SIZE EFFECTS OF SINGLE CRYSTAL SILICON显示文摘有不同尺寸的六种微桥横梁标本为把测试弄弯用影印石版术技术被制作。有 trapezoidal 节的横梁标本能是有矩形和方形的节的那些的代表,它通常在 MEMS 被使用。在把测试弄弯使用的 Nanoindentation 方法能被用于有弹性、塑料的材料。另外,象弹性,坚硬和弯曲强度的模量那样的一些机械性质参数被获得。 SCS 的弹性的平均模量是 170.295 0 ± 2.485 0 GPa ,不显示出尺寸效果,而是弯曲强度从 3.24 GPa 到 10.15 GPa ,显示的强壮的尺寸效果,和平均坚硬是 9.496 7+ 1.753 3 GPa ,在哪个没有明显的尺寸效果被观察。 | HAN Guangping LIU Kai WANG Xiuhong | 2006 | Chinese Journal of Mechanical Engineering2006，19，2： | 4 |
| 7 | An improved Landsat Image Mosaic of Antarctica显示文摘A revised Landsat Image Mosaic of Antarctica (LIMA) is presented, using the 1073 multi-band scenes of the original Landsat-7 ETM+ LIMA image collection available at the United States Geological Survey (USGS: http://gffzza64998f73d704ee0hubwvbf5fnn0c6ucq.ffgz.tsg.suse.edu.cn/). Three improvements have been applied during the data processing: (1) DN saturation is adjusted by adopting a linear regression, which has a lower root mean square error than the ratio regression used by LIMA; (2) solar elevation angle is calculated using pixel-level latitude/longitude and the acquisition time and date of the central pixel of the scene, improving slightly upon the bilinear interpolation of the solar elevation angles of scene corners applied in LIMA; and (3) two additional image bands, Band 5 and Band 7, are sharpened using the panchromatic band (Band 8) and a Gram-Schmidt Spectral Sharpening algorithm to more easily distinguish snow, cloud and exposed rocks. The final planetary reflectance product is stored in 16-bit bands to preserve the full radiometric content of the scenes. A comparative statistical analysis among 12 sample regions indicates that the new mosaic has enhanced visual qualities, information entropy, and information content for land cover classification relative to LIMA. | HUI FengMing CHENG Xiao LIU Yan ZHANG YanMei YE YuFang WANG XianWei LI Zhan WANG Kun ZHAN ZhiFei GUO JianHong HUANG HuaBing LI XiuHong GUO ZiQi GONG Peng | 2013 | Science China Earth Sciences2013，56，1： | 4 |
| 8 | Formation mechanism of shrinkage and large inclusions of a 70t 12Cr2Mo1 heavy steel ingot显示文摘Shrinkage cavities and large inclusions are serious internal defects of heavy steel ingot and influence the quality of subsequent forgings. In order to remove these two types of defects, a 70 t 12Cr2Mo1 heavy ingot fabricated by vacuum carbon de-oxidation process was sectioned and investigated by means of structure observation and EDS analysis. To further study the forming mechanism of shrinkage and inclusion defects and find possible solutions, simulation on pouring and solidification processes was also carried out using Fluent and ProCAST software, respectively. Results show that the shrinkage defects do not appear in the middle-upper part of the ingot. The critical value of shrinkage cavity criterion is ascertained as 0.013 on the basis of sectioning investigation and simulation results, which can be used in computer simulation to predict and avoid shrinkage defects in production of 12Cr2Mo1 ingots with different weights. However, large inclusions are found at the bottom of the ingot body. The bad thermal conditions of the ingot surface and large amount of entrained slag are the main origin of the large inclusions. The simulation result of the pouring process shows that large inclusions may be eliminated by combined measures of improving the top thermal condition and controlling the height of rudimental molten steel in the ladle to above 300 mm. | Liu Hongwei Fu Paixian Kang Xiuhong Ma Xiaoping | 2014 | China Foundry2014，11，1： | 4 |
| 9 | Numerical study of macrosegregation formation of ingot cast in normal sand mold and water-cooled sand mold显示文摘Formation of macrosegregation of 5 t steel ingots cast in sand molds with and without water-cooled copper tube is simulated by solving macroscopic mass,momentum,species and energy conservation equations with the consideration of shrinkage formation.Predicted macrosegregation pattern of the ingots shows a fair agreement with the experimental data.Both calculations and experiments reveal that some positive segregation patches are formed at the bottom of ingot.With the water-cooled copper tube inserted in the sand mold,the ingot cast has a less intensive macrosegregation.Mechanisms of macrosegregation formation are numerically analyzed.Explanations regarding the influences of fluid flow and temperature change upon the segregation formation are provided. | Dongrong LIU Xiuhong KANG Baoguanq SANG Dianzhong LI | 2011 | Acta Metallurgica Sinica(English Letters)2011，24，1： | 3 |
| 10 | Changes in dendritic cells and dendritic cell subpopulations in peripheral blood of recipients during acute rejection after kidney transplantation显示文摘 | Ma Linlin Liu Yong Wu Junjie Xu Xiuhong Liu Fen Feng Lang Xie Zelin Tang Yawang Sun Wen Guo Hongbo Zhang Lei Lin Jun Tian Ye | 2014 | Chinese Medical Journal2014，，8： | 3 |
| 11 | Coordinated transcription of ANRIL and P16 genes is silenced by P16 DNA methylation显示文摘Objective: To investigate the relationship between the transcription of ANRIL, P15, P14 and P16 at the same locus and the regulation mechanism of ANRIL.Methods: Publicly available database of Cancer Cell Line Encyclopedia(CCLE) was used in bioinformatic analyses. Methylation of Cp G islands was detected by denaturing high performance liquid chromatography(DHPLC). Gene transcript levels were determined using quantitative real-time polymerase chain reaction(q RTPCR) assays. An engineered P16-specific transcription factor and DNA methyltransferase were used to induce P16-specific DNA demethylation and methylation.Results: The expression level of ANRIL was positively and significantly correlated with that of P16 but not with that of P15 in the CCLE database. This was confirmed in human cell lines and patient colon tissue samples. In addition, ANRIL was significantly upregulated in colon cancer tissues. Transcription of ANRIL and P16 was observed only in cell lines in which the P16 alleles were unmethylated and not in cell lines with fully methylated P16 alleles.Notably, P16-specific methylation significantly decreased transcription of P16 and ANRIL in BGC823 and GES1 cells. In contrast, P16-specific demethylation re-activated transcription of ANRIL and P16 in H1299 cells(P<0.001).Alteration of ANRIL expression was not induced by P16 expression changes.Conclusions: ANRIL and P16 are coordinately transcribed in human cells and regulated by the methylation status of the P16 Cp G islands around the transcription start site. | Ying Gan Wanru Ma Xiuhong Wang Juanli Qiao Baozhen Zhang Chenghua Cui Zhaojun Liu Dajun Deng | 2018 | Chinese Journal of Cancer Research2018，30，1： | 2 |
| 12 | Morphologies of solid-liquid interface and surface steps during rapid growth of BaB_2O_4 single crystals显示文摘The evolution of solid-liquid interface during BBO single crystal growth was stud- ied by the differential interference microscopy. And the step morphology on (0001) surface of the as-grown crystal was observed by the atomic force microscopy as well. It was found that the transition from a flat solid-liquid interface to a skeletal shape will occur in case of rapid growth. However, AFM images of surface steps revealed morphology differences correlated with crystallographic directions. The steps advancing along <1010 > direction form the step flow, whereas those steps propagating along <0110 > direction shape into step segments. Measurements of step heights by AFM indicated that it is the high anisotropy of the dimension of growth unit and step bunching due to the enlargement of concentration difference along the surface that results in the anisotropy of step morphologies. | PAN XiuHong, AI Fei, JIN WeiQing, LIU Yan & ZHANG Ying Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China | 2007 | Science China(Physics,Mechanics & Astronomy)2007，50，4： | 2 |
| 13 | Synthesis and Optical Properties of TiO2 Nanoparteles 显示文摘 | Zhao Yin Li Chunzhong Liu Xiuhong | 2007 | Materials Letters2007，61，1： | 1 |
| 14 | Surface characteristics and microstrueture of dispersed TiO2 nanopartieles prepared by diffusion flame combustion 显示文摘 | Zhao Yin Li Chunzhong Liu Xiuhong | 2008 | Mater Chem Phys2008，107，23： | 1 |
| 15 | Zn-doped TiO2 nanopartieles with high photoeatalytie activity synthesized by hydrogen-oxygen diffusion flame 显示文摘 | Zhao Yin Li Chunzhong Liu Xiuhong | 2007 | Appl Catal B: Environ2007，79，3： | 1 |
| 16 | Correlation of miscibility and mechanical properties of polypropylene/olefin block copolymers:Effect of chain composition显示文摘 | Guoming Liu Xiuqin Zhang Xiuhong Li | 2012 | Journal of Applied Polymer Science2012，152，1： | 1 |
| 17 | Synthesis and characterization of a novel MPEG–chitosan diblock copolymer and self-assembly of nanoparticles显示文摘 | XiangYe Kong XingYi Li XiuHong Wang TingTing Liu YingChun Gu Gang Guo Feng Luo Xia Zhao YuQuan Wei ZhiYong Qian | 2009 | Carbohydrate Polymers2009，，1： | 1 |
| 18 | Nitrogen removal via nitrite from municipal wastewater at low temperatures using real-time control to optimize nitrifying communities 显示文摘 | Yang Qing Pang Yongzhen Liu Xiuhong | 2007 | Environmental Science and Technology2007，41，23： | 1 |
| 19 | Nitrogen removal via nitrite from municipal wastewater at low temperatures using real-time control to optimize nitrifying communities显示文摘 | YANG Qing PENG Yongzhen LIU Xiuhong | 2007 | Environmental Science and Technology2007，41，23： | 1 |
| 20 | Association between adverse clinical outcome in human disease caused by novel influenza A H7N9 virus and sustained viral shedding and emergence of antiviral resistance显示文摘 | Yunwen Hu Shuihua Lu Zhigang Song Wei Wang Pei Hao Jianhua Li Xiaonan Zhang Hui-Ling Yen Bisheng Shi Tao Li Wencai Guan Lei Xu Yi Liu Sen Wang Xiaoling Zhang Di Tian Zhaoqin Zhu Jing He Kai Huang Huijie Chen Lulu Zheng Xuan Li Jie Ping Bin Kang Xiuhong Xi | 2013 | The Lancet2013，，9885： | 1 |
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