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| 1 | Development of a coupled supersonic inlet-fan Navier–Stokes simulation method显示文摘A coupled supersonic inlet-fan Navier–Stokes simulation method was developed by using COMSOL-CFD code. The flow turning, pressure rise and loss effects across blade rows of the fan and the inlet-fan interactions were taken into account as source terms of the governing equations without a blade geometry by a body force model. In this model, viscous effects in blade passages can also be calculated directly, which include the exchange of momentum between fluids and detailed viscous flow close to walls. NASA Rotor 37 compressor test rig was used to validate the ability of the body force model to estimate the real performance of blade rows. Calculated pressure ratio characteristics and the distribution of the total pressure, total temperature, and swirl angle in the span direction agreed well with experimental and numerical data. It is shown that the body force model is a promising approach for predicting the flow field of the turbomachinery. Then, coupled axisymmetric mixed compression supersonic inlet-fan simulations were conducted at Mach number 2.8 operating conditions. The analysis includes coupled steady-state performance, and effects of the fan on the inlet. The results indicate that the coupled simulation method is capable of simulating behavior of the supersonic inlet-fan system. | Qiushi LI Yongzhao LYU Tianyu PAN Da LI Ha'nan LU Yifang GONG | 2018 | Chinese Journal of Aeronautics2018，31，2： | 5 |
| 2 | An Effective Over-sampling Method for Imbalanced Data Sets Classification显示文摘 | ZHAI Yun MA Nan RUAN Da AN Bing | 2011 | Chinese Journal of Electronics2011，20，3： | 5 |
| 3 | A new derivative of triterpene with anti-melanoma B16 activity from Conyza canadensis显示文摘A new derivative of triterpene named Erigeronol 1 was isolated from the EtOH extract of the aerial part of Conyza canadensis together with 15 known compounds for the first time from this plant.The structure of Erigeronol 1 was elucidated as 3-O-(hydroxyacetyl) -23,28-dihydroxy-β-amyrin by hydrolysis and spectroscopic analysis.Erigeronol 1 showed potent cytotoxic activity with IC_(50) value of 7.77±0.47μg/mL against melanoma B16 determined by the 3-(4,5-dimethylthiazo-2-yl)-2,5-diphenyltetrazolium bromide(MTT) method. | Ming Ming Yan Ting You Li Da Qing Zhao Shuai Shao Sheng Nan Bi | 2010 | Chinese Chemical Letters2010，21，7： | 4 |
| 4 | Involvement of heme oxygenase-1 induction in anti-vascular inflammation effects of Xanthoceras sorbifolia in human umbilical vein endothelial cells显示文摘OBJECTIVE: To define the effects of Xanthoceras sorbifolia(EXS) on vascular inflammation and the mechanisms in endothelial cells.METHODS: Vascular protective effects of an ethanol extract of seeds from EXS(1-50 μg/mL) against tumor necrosis factor-α(TNF-α)-induced vascularinflammation were examined in human umbilical vein endothelial cells(HUVECs).RESULTS: EXS significantly decreased TNF-α-induced expression of cell adhesion molecules, such as intracellular adhesion molecule-1, vascular cell adhesion molecule-1, and endothelial cell selectin,in a dose-dependent manner. Pre-treatment with EXS significantly inhibited translocation and transcriptional activity of nuclear factor-κB(NF-κB) increased by TNF-α. EXS also significantly inhibited formation of intracellular reactive oxygen species(ROS). Moreover, the vascular protective effects of EXS were linked to up-regulation of heme oxygenase-1(HO-1) and nuclear factor E2-related factor-2(Nrf-2) expression. EXS-induced HO-1 expression was significantly decreased in SnPP(HO-1 inhibitor)-and HO-1 siRNA-treated cells, whereas an increase was found in cobalt protoporphyrin IX(CoPP)(HO-1 inducer)-treated cells. In addition, pretreatment with EXS increased HO-1 and Nrf-2 expression under TNF-α stimulation with or without N-acetyl-L-cysteine. Furthermore, the inhibitory effects of EXS on TNF-α-induced vascular inflammation were partially reversed in SnPP-and of HO-1siRNA-treated cells but increased by CoPP.CONCLUSION: These results suggest that EXS may have important implications for prevention of vascular complications associated with vascular inflammation by inhibition of the NF-κB/ROS pathway and activation of the Nrf-2/HO-1 pathway. | Jung Joo Yoon Byung Hyuk Han Eun Sik Choi Seung Namgung Da Hye Jeong Song Nan Jin Yun Jung Lee Dae Gill Kang Ho Sub Lee | 2018 | Journal of Traditional Chinese Medicine2018，38，6： | 4 |
| 5 | Effect of surfactants on the structure and photoelectric properties of ITO films by sol-gel method显示文摘The Indium tin oxide(ITO) thin film possesses excellent photoelectric properties that enable it to act as an ideal transparent conductor.To obtain high-quality ITO films through sol-gel method, the ionic surfactant monoethanolamine and the non-ionic surfactant polyethylene glycol(PEG) were added to the ITO precursor slurry.The influences of surfactants on the structural and photoelectric properties of ITO film samples were investigated.XRD patterns indicated that surfactant monoethanolamine contributed to film predominant grain orientation along the(400) plane.The high transmittance(over 95%) was attributed to the preferred orientation and the grain size expansion of ITO films.SEM showed that the surface particle size and the morphology of ITO films were strongly dependent on the kind of surfactants used.Moving to the shortwave region, the absorption edge of the films exhibited the Burstein-Moss shift. | LIU Jiaxiang, WU Da, ZHANG Nan, and WANG Yue College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China | 2010 | Rare Metals2010，29，2： | 4 |
| 6 | Mechanism of plasticity enhancement of AZ31B magnesium alloy sheet by accumulative alternating back extrusion显示文摘Accumulative alternating back extrusion was a potential fine-grain modification method.In this paper,it was an innovative attempt to develop high-performance magnesium alloy sheet by this process.Under the condition of 350 K,commercial AZ31 magnesium alloy was made into billet by accumulative alternating back extrusion,and then extruded into fine-grain magnesium alloy sheet.Through a systematic study of its microstructure and mechanical properties,the results showed that the initial state had an important influence on the evolution of the structure during extrusion.After accumulative alternating back extrusion to produce the billet,the grain size of the sheet obtained by extrusion was significantly refined,which was related to the accumulation of deformation and grain refinement during the alternating loading process.Grain refinement caused the proportion of dynamic recrystallization inside the sheet with 2 cycles of accumulative alternating back extrusion to drop to 27%.With the increase of extrusion cycles from 2 to 4,the high density of dislocations led to an increase in the proportion of dynamic recrystallization and finer grains.The texture changed from strong basal texture to weak bimodal texture.The results of uniaxial tensile test show that due to grain refinement and texture change,the yield strength was significantly reduced,and the plasticity was significantly improved.It was verified that accumulative alternating back extrusion was meaningful for subsequent processing,and it also provided scientific guidance for the development of fine-grained magnesium alloy sheet. | Ye Wang Feng Li Nan Bian Hua Qiu Du Peng Da Huo | 2023 | Journal of Magnesium and Alloys2023，11，5： | 2 |
| 7 | Impact of pre-oxidation on the formation of byproducts in algae-laden water disinfection:Insights from fluorescent and molecular weight显示文摘Pre-oxidation has been reported to be an effective way to remove algal cells in water, but the released algal organic matter (AOM) could be oxidized and lead to the increment in disinfection by-product (DBP) formation. The relationship between pre-oxidation and AOM-derived DBP formation needs to be approached more precisely. This study compared the impact of four pre-oxidants, ozone (O), chlorine dioxide (ClO), potassium permanganate(KMnO) and sodium hypochlorite (NaClO), on the formation of nitrogenous (N-) and carbonaceous (C-) DBPs in AOM chlorination. The characterization (fluorescent properties,molecular weight distribution and amino acids concentration) on AOM samples showed that the characterization properties variations after pre-oxidation were highly dependent on the oxidizing ability of oxidants. The disinfection experiments showed that Oincreased DBP formation most significantly, which was consistent with the result of characterization properties variations. Then canonical correspondent analysis (CCA) and Pearson’s correlation analysis were conducted based on the characterization data and DBP formation. CCA indicated that C-DBPs formation was highly dependent on fluorescent data. The formation of haloacetic acids (HAAs) had a positive correlation with aromatic protein-like component while trichloromethane (TCM) had a positive correlation with fulvic acid-like component.Pearson’s correlation analysis showed that low molecular weight fractions were favorable to form N-DBPs. Therefore, characterization data could provide the advantages in the control of DBP formation, which further revealed that KMnOand ClOwere better options for removing algal cells as well as limiting DBP formation. | Da Sheng Lingjun Bu Shumin Zhu Yangtao Wu Jue Wang Nan Li Shiqing Zhou | 2022 | Journal of Environmental Sciences2022，34，7： | 2 |
| 8 | Spatial Patterns of LULC and Driving Forces in the Transnational Area of Tumen River:A Comparative Analysis of the Sub-regions of China,the DPRK,and Russia显示文摘Understanding the spatial patterns of land-use and land-cover(LULC)and their driving forces in transnational areas is important for the sustainable development of these regions.However,the spatial patterns of LULC and their driving forces across multiple scales are poorly understood in transnational areas.In this study,we analyzed the spatial patterns of LULC and driving forces in the transnational area of Tumen River(TATR)in 2016 across two scales:the entire region and the sub-regions of China,the Democratic People’s Republic of Korea(DPRK),and Russia.Results showed that the LULC was dominated by broadleaf forest and dry farmland in the TATR in 2016,which accounted for 66.86%and 13.60%of the entire region,respectively.Meanwhile,the LULC in the three sub-regions exhibited noticeable differences.In the Chinese and the DPRK’s sub-regions,the area of broadleaf forest was greater than those for the other LULC types,while the Russian sub-region was dominated by broadleaf forest and grassland.The spatial patterns of LULC were mainly influenced by topography,climate,soil properties,and human activities.In addition,the driving forces of the spatial patterns of LULC in the TATR had an obvious scaling effect.Therefore,we suggest that effective policies and regulations with cooperation among China,the DPRK,and Russia are needed to plan the spatial patterns of LULC and improve the sustainable development of the TATR. | NAN Ying WANG Bingbing ZHANG Da LIU Zhifeng QI Dekang ZHOU Haohao | 2020 | Chinese Geographical Science2020，30，4： | 2 |
| 9 | The common anesthetic, sevoflurane, induces apoptosis in A549 lung alveolarepithelial cells显示文摘 | Gui?Hua Wei Juan Zhang Da?Qing Liao Zhuo Li Jing Yang Nan?Fu Luo Yan Gu | 2014 | Molecular Medicine Reports2014，，1： | 1 |
| 10 | Phenotypic evaluation of the basal-like subtype of invasive breast carcinoma 显示文摘 | Livasy CA Karaca G Nan da R | 2006 | Mod Pathol2006，19，2： | 1 |
| 11 | Synthesis and characteristics of aqueous reactive urethane oligomer containing sulfoisophthalate sodium salt 显示文摘 | YEN MENG - SHUNG HUANG CHING - NAN HONG PO - DA | 2007 | Journal of Applied Polymer Science2007，106，5： | 1 |
| 12 | Discussion of aqueous urethane acrylate oligomers with sulfoisophthalate on the antistatic hydrophilic finishing of different fabrics显示文摘 | YEN MENG - SHUNG HUANG CHING - NAN HONG PO - DA | 2008 | Polymer Composites2008，29，1： | 1 |
| 13 | Identification of therapeutic drugs against COVID-19 through computational investigation on drug repurposing and structural modification显示文摘Global prevalence of coronavirus disease 2019(COVID-19)calls for an urgent development of anti-viral regime.Compared with the development of new drugs,drug repurposing can significantly reduce the cost,time,and safety risks.Given the fact that coronavirus harnesses spike protein to invade host cells through angiotensinconverting enzyme 2(ACE2),hence we see if any previous anti-virtual compounds can block spike-ACE2 interaction and inhibit the virus entry.The results of molecular docking and molecular dynamic simulations revealed that remdesivir exhibits better than expected anti-viral invasion potential against COVID-19 among the three types of compounds including remdesivir,tenofovir and lopinavir.In addition,a positive correlation between the surface area occupied by remdesivir and anti-viral invasion potential was also found.As such,the structure of remdesivir was modified by linking an N-benzyl substituted diamidine derivative to its hydroxyl group through an ester bond.It was found that this compound has a higher anti-viral invasion potential and greater specificity. | Yangfang Yun Hengyi Song Yin Ji Da Huo Feng Han Fei Li Nan Jiang | 2020 | The Journal of Biomedical Research2020，34，6： | 1 |
| 14 | Serum albuin concentration and waiting list mortality in idiopathic interstitial pneumonia 显示文摘 | Zis nan DA Kawut SM Lederer DJ | 2009 | Chest2009，135，： | 1 |
| 15 | 中国软件学院国际合作项目类型探析(英文)显示文摘在全球化和软件行业需求的双重影响下,中国的软件学院与国外高校开展了形式多样的国际合作项目,包括体验式项目、学位项目以及联合合作项目。文章分析各类国际合作项目的特点,并根据这些特点探索出适合中国软件学院开展国际合作项目的方法。 | Siyao Gong Da Li Nan Yin Mei Li Ruiyun Yu | 2016 | 计算机教育2016，，8： | 1 |
| 16 | Spatial patterns of net primary productivity and its driving forces:a multi-scale analysis in the transnational area of the Tumen River显示文摘Analyzing the spatial patterns of net primary productivity(NPP)and its driving forces in transnational areas provides a solid basis for understanding regional ecological processes and ecosystem services.However,the spatial patterns of NPP and its driving forces have been poorly understood on multiple scales in transnational areas.In this study,the spatial patterns of NPP in the transnational area of the Tumen River(TATR)in 2016 were simulated using the Carnegie Ames Stanford Approach(CASA)model,and its driving forces were analyzed using a stepwise multiple linear regression model.We found that the total amount of NPP in the TATR in 2016 was approximately 14.53 TgC.The amount of NPP on the Chinese side(6.23 TgC)was larger than those on the other two sides,accounting for 42.88%of the total volume of the entire region.Among different land-use and land-cover(LULC)types,the amount of NPP of the broadleaf forest was the largest(11.22 TgC),while the amount of NPP of the bare land was the smallest.The NPP per unit area was about 603.21 gC/(m2 yr)across the entire region,while the NPP per unit area on the Chinese side was the largest,followed by the Russian side and the DPRK's side.The spatial patterns of NPP were influenced by climate,topography,soil texture,and human activities.In addition,the driving forces of the spatial patterns of NPP in the TATR had an obvious scaling effect,which was mainly caused by the spatial heterogeneity of climate,topography,soil texture,and human activities.We suggest that effective land management policies with cooperation among China,the DPRK,and Russia are needed to maintain NPP and improve environmental sustainability in the TATR. | Jianwen WANG Da ZHANG Ying NAN Zhifeng LIU Dekang QI | 2020 | Frontiers of Earth Science2020，14，1： | 1 |
| 17 | Sono-assisted preparation of highly-efficient peroxidase-like Fe3O4 magnetic nanoparticles for catalytic removal of organic pollutants with H2O2显示文摘 | Wang Nan Zhu Li Hua Wang Da Li | 2010 | Ultrasonics Sonochemistry2010，17，： | 1 |
| 18 | Study of the Electrical Double Layer of a Spherical Micelle: Functional Theoretical Approach显示文摘By using the iterative method in functional theory, an analytic expression of the Poisson-Boltzmann equation (PB eq.), which describes the distribution of the potential of electrical double layer of a spherical micelle, has been carried out under the general potential condition for the first time. The method also can give the radius, the surface potential, and the thickness of the layer. | Zheng Wu WANG1, Gan Zuo LI1*, Da Ren GUAN2, Xi Zhang YI2, An Jing LOU3 1Key Lab of Colloid and Interface Chemistry for State Education Ministry, Shandong University, Ji’nan 250100 2Institute of Theoretical Chemistry Shandong University, Ji’n | 2001 | Chinese Chemical Letters2001，12，7： | 1 |
| 19 | Sono-assis- ted preparation of highly-efficient peroxidase-like Fe304 magnetic nanoparticles for catalyticr emval of organic pol- lutants with HO 显示文摘 | Wang Nan Zhu Li Hua Wang Da Li | 2010 | Ultrasonics Sonochemistry2010，17，： | 1 |
| 20 | Co‑packaged optics(CPO):status,challenges,and solutions显示文摘Due to the rise of 5G,IoT,AI,and high-performance computing applications,datacenter trafc has grown at a compound annual growth rate of nearly 30%.Furthermore,nearly three-fourths of the datacenter trafc resides within datacenters.The conventional pluggable optics increases at a much slower rate than that of datacenter trafc.The gap between application requirements and the capability of conventional pluggable optics keeps increasing,a trend that is unsustainable.Copackaged optics(CPO)is a disruptive approach to increasing the interconnecting bandwidth density and energy efciency by dramatically shortening the electrical link length through advanced packaging and co-optimization of electronics and photonics.CPO is widely regarded as a promising solution for future datacenter interconnections,and silicon platform is the most promising platform for large-scale integration.Leading international companies(e.g.,Intel,Broadcom and IBM)have heavily investigated in CPO technology,an inter-disciplinary research feld that involves photonic devices,integrated circuits design,packaging,photonic device modeling,electronic-photonic co-simulation,applications,and standardization.This review aims to provide the readers a comprehensive overview of the state-of-the-art progress of CPO in silicon platform,identify the key challenges,and point out the potential solutions,hoping to encourage collaboration between diferent research felds to accelerate the development of CPO technology. | Min Tan Jiang Xu Siyang Liu Junbo Feng Hua Zhang Chaonan Yao Shixi Chen Hangyu Guo Gengshi Han Zhanhao Wen Bao Chen Yu He Xuqiang Zheng Da Ming Yaowen Tu Qiang Fu Nan Qi Dan Li Li Geng Song Wen Fenghe Yang Huimin He Fengman Liu Haiyun Xue Yuhang Wang Ciyuan Qiu Guangcan Mi Yanbo Li Tianhai Chang Mingche Lai Luo Zhang Qinfen Hao Mengyuan Qin | 2023 | Frontiers of Optoelectronics2023，16，1： | 1 |
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