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| 1 | Distribution and Accumulation Characteristics of Heavy Metals in Sediments in Southern Sea Area of Huludao City, China显示文摘The southern sea area of the Huludao City, Liaoning Province might be polluted by heavy metals because it is close to the Jinzhou Bay, one of the heaviest sea area polluted by heavy metals in China. The undisturbed modern sediment core can be used to analyze the accumulation and source of the pollutants using 137 Cs and 210 Pb ex . Thirty-five samples of surface sediment and two core sediments were collected from the southern sea area of Huludao City. The concentrations of copper (Cu), lead (Pb), chrome (Cr), zinc (Zn), arsenic (As) and mercury (Hg) in the surface sediments as well as Cu, Pb, Zn, Cr, 137 Cs and 210 Pb ex in the core sediments were determined to research the spatial distribution and accumulation characteristics, and to analyze the sources and the potential risks of heavy metals. The results show that the pollution levels of Zn and Hg are serious, and 26 stations are at moderate or heavy ecological risks. The concentrations of the heavy metals increase from east to west, as well as from open sea to offshore marine area. The concentrations of heavy metals are not high in the sediments adjacent to the Jinzhou Bay, and the influence caused by the seawater exchange with the Jinzhou Bay is little. The concentrations of the heavy metals in the core sediments show low-high-low characteristic, and it coincides with the pollution history of Huludao City. The atmospheric deposition of heavy metals from the Huludao Zinc Plant is likely to be the main source of pollution without direct discharge of wastewater. The high concentrations of heavy metals appear on the upper sediment of 20 cm. The shallow sediment with high heavy metal contents might be exposed to surface when it was disturbed by the ocean engineering and big storm surge, then cause risk to the safety of aquaculture and human healthy. | WANG Yan LIU Ruhai FAN Dejiang YU Ping WANG Jinyu TANG Aikun | 2013 | Chinese Geographical Science2013，23，2： | 12 |
| 2 | Effect of fertilization patterns on the assemblage of weed communities in an upland winter wheat field显示文摘Aims Understanding the response of farmland weed community assembly to fertilization is important for designing better nutrient management strategies in integrated farmland ecological systems.Many studies have focused on weed characteristics,mainly crop–weed competition responses to fertilization or weed communities alone.However,weed community assembly in association with crop growth is poorly understood in the agroecosystems,but is important for the determination of integrated weed management.Biodiversity promotes ecosystem productivity in the grassland,but whether it applies to the agroecosystems is unclear.Based on an 11-year field experiment,the cumulative effects of different fertilization patterns on the floristic composition and species diversity of farmland weed communities along with wheat growth in a winter wheat–soybean rotation were investigated.Methods The field trial included five fertilization patterns with different combinations of N,P and K fertilizers.Species composition and diversity of weed communities,aboveground plant biomass and nutrient accumulation of weeds and winter wheat,light penetration to the ground surface and wheat yield were measured at each plot in 2009 and 2010.Multivariate analysis,regression and analysis of variance were used to analyze the responses of these parameters to the different fertilization treatments.Important Findings Four dominant weeds(Galium aparine L.,Veronica persica Poir.,Vicia sativa L.and Geranium carolinianum L.)accounted for~90%of the total weed density in the 2 years of experimental duration.The residual weed community assembly was influenced primarily by topsoil available nutrients in the order P>N>K.Competition for nutrients and solar radiation between crops and weeds was the main indirect effect of fertilization on the changes in weed community composition and species diversity.The indices of species diversity(species richness,Shannon–Wiener,Pielou and Simpson indices)showed significant linear relationships with wheat yield.The balanced fertilization treatment was more efficient at inhibiting the potential growth of weeds because of solar radiation being intercepted by wheat.These results support the conclusion that wheat yield is favored by balanced fertilization,whereas the weed community is favored by PK fertilization in terms of density and diversity.However,the negative effects on wheat yield may be compromised by simultaneous positive effects of weed communities in the fertilization treatments,for instance,the NP and NK treatments,which are intermediate in terms of increasing wheat production and to a level maintaining a diverse community. | Leilei Tang Kaiyuan Wan Chuanpeng Cheng Ruhai Li Daozhong Wang Junfeng Pan Yong Tao Juan Xie Fang Chen | 2014 | Journal of Plant Ecology2014，7，1： | 6 |
| 3 | 不同采购策略下渠道成员定价及订货决策研究显示文摘为研究采购策略对产品定价及订货水平的影响,本文在单制造商与两竞争零售商构成的分销供应链中,基于线性量折扣方案构建独立采购(D)、转售行为(S)及联合采购(U)3种采购策略下的利润模型,利用博弈论及最优化理论分析并比较不同采购策略下最优决策。结果表明:联合采购时初始批发价格始终大于独立采购时的取值。两零售商的订货水平不仅取决于折扣率,还取决于两零售商间的差异;一定条件下两零售商会采取相反的订货策略。独立采购与联合采购时零售商层的总订货量相等且均大于转售行为下的取值。对制造商而言,联合采购时其利润会达到最大,而两零售商利润的相对大小则与一定的阈值取值相关。 | 杨天剑 田建改 Ruhai Wu | 2020 | 工业技术经济2020，39，3： | 5 |
| 4 | 冷冻干燥更适合土壤活性氮气体(HONO和NO)排放的研究?显示文摘土壤活性氮气体(HONO和NO)排放是全球氮循环的关键过程,对大气化学具有重要意义。本研究采集了农田,草地和森林三种不同土地利用类型的土壤样品,分别对样品进行了风干,冻干和烘干三种处理,并与未处理的新鲜土壤进行比较研究。结果表明,三种类型土壤的冻干土与新鲜土样品的p H值差异最小。总的来说,三种干燥处理都能提高新鲜土壤NH4+-N, NO3--N和溶解态有机N的含量。与新鲜土壤相比,冻干土壤HONO和NO的最大排放通量及完整干湿交替循环的总排放量没有显著增加,而风干和烘干土壤显著增加。因此,冷冻干燥方法可能更适合涉及土壤活性氮气体排放通量的研究。这一发现的重要启示是,我们需要慎重评价以往基于不同干燥方法得到的有关陆地–大气界面活性氮交换过程和生物地球化学氮循环机制的认识。 | WU Dianming DENG Lingling LIU Yanzhuo XI Di ZOU Huilan WANG Ruhai SHA Zhimin PAN Yuepeng HOU Lijun LIU Min | 2020 | Atmospheric and Oceanic Science Letters2020，13，3： | 3 |
| 5 | Long- versus short-interval follow-up after resection of hepatocellular carcinoma: a retrospective cohort study显示文摘Background:Average postoperative follow-up intervals vary in patients undergoing hepatocellular carcinoma(HCC)resection because of limited evidence regarding the optimal interval.We aimed to compare the associations of long-versus short-interval follow-up with survival and recurrence in risk-stratified HCC patients.Methods:We performed a retrospective cohort study between 2007 and 2014.In total,1227 patients treated by curative resection of Barcelona Clinic Liver Cancer stage A or B HCC were stratified as having a low(n=865)or high(n=362)risk of early recurrence(within the first 2 years after resection)based on prognostic factors identified by the least absolute shrinkage and selection operation algorithm.Patients were further classified into long-interval(every 4-6 months)and short-interval(every 2-4 months)follow-up subgroups based on follow-up within 2 years after resection(low risk,long vs.short:n=390 vs.n=475;high-risk,long vs.short:n=149 vs.n=213).Results:The short-interval follow-up did not prolong overall survival in either the low-risk(hazard ratio[HR]=1.152;95%confidence interval[CI]0.720-1.843)or high-risk(HR=1.213;95%CI 0.702-2.094)patients.Early recurrence occurred in 401 patients.For high-risk patients,the short-interval follow-up subgroup exhibited smaller intrahepatic recurrence than did the long-interval group(2.6 vs.3.5 cm,respectively,P=0.045).However,no significant difference in the rate of Barcelona Clinic Liver Cancer stage 0/A recurrence was found between the long-and short-interval follow-up groups in either low-or high-risk patients(63.1%vs.68.2%,respectively,P=0.580;31.3%vs.41.5%,respec-tively,P=0.280).The rate of curative intent treatment for recurrence(34.5%vs.39.7%,respectively,P=0.430;14.6%vs.20.3%,respectively,P=0.388)was also similar between the follow-up groups for low-and high-risk patients.Conclusions:Shortening the postoperative follow-up interval from every 4-6 months to every 2-4 months within the first 2 years after resection did not increase the rate of curative intent treatment or prolong the overall survival of patients with Barcelona Clinic Liver Cancer stage A or B HCC. | Wei He Yun Zheng Ruhai Zou Jingxian Shen Junping Yang Jiliang Qiu Qiang Tao Wenwu Liu Zhiwen Yang Yuanping Zhang Binkui Li Yunfei Yuan | 2018 | Cancer Communications2018，38，1： | 2 |
| 6 | Distribution Characteristics and Controlling Factors of Soluble Heavy Metals in the Yellow River Estuary and Adjacent Sea显示文摘 | Aikun Tang Ruhai Liu Min Ling Liaoqi Xu Jinyu Wang | 2010 | Procedia Environmental Sciences2010，，： | 1 |
| 7 | The Simulation of CHERY Full--scale Side Impact Test 显示文摘 | Chen Xiaodong Lin Haiyan Ge Ruhai | 2004 | SAE Paper 2004-01-03482004，，： | 1 |
| 8 | A Dynamic Model of the Choice of Technology in Economic Development显示文摘在这个重叠产生模型,在生产部门有失业。生产公司从事垄断竞争并且选择技术最大化利润。与是的资本生产的固定成本,在生产部门的增加的回来存在。首先,当个人们变得更耐心时,当一项个人收入的水平减少时,处于唯一的稳定的状态,积蓄率增加。第二,当一项个人收入的水平减少时,在生产商品上花的收入的人口或百分比的增加不改变不变的技术。第三,生产公司选更先进的技术和不变的首都为存货的工资率领先的增加增加。最后,到技术采纳的津贴的水平的增加不改变不变的技术。 | Haiwen Zhou Ruhai Zhou | 2016 | Frontiers of Economics in China-Selected Publications from Chinese Universities2016，11，3： | 1 |
| 9 | Determine locking range of coherently combined fiber lasers joined by fiber couplers显示文摘 | Dou Ruhai Zhou Xia Zhang Liping | 2008 | Opt Int J Light Electron Opt2008，120，7： | 1 |
| 10 | Infrared characterization of interfacial Si-O bond formation on silanized flat SiO2/Si surfaces 显示文摘 | Tian Ruhai Seitz O Li Meng | 2010 | Langmuir2010，26，7： | 1 |
| 11 | DTN Licklider Transmission Protocol ( LTP ) over asymmetric space channels显示文摘 | Yu Qian Wang Ruhai Sun Xue | 2013 | IEEE Aerospace and Electronic Systems Magazine2013，28，5： | 1 |
| 12 | Performance of DTN protocols in Space Communications 显示文摘 | Sun Xue Yu Qian Wang Ruhai | 2013 | ACM- Springer Wireless Networks2013，19，： | 1 |
| 13 | Protocol Testing of SCPS-TP over NASA's ACTS Asymmetric Links显示文摘 | Ruhai S Wang Ho-ran | | 0，，02： | 1 |
| 14 | Clinical features and outcome of multiple primary malignancies involving hepatocel-lular carcinoma:a long-term follow-up study 显示文摘 | Qing-An Zeng Jiliang Qiu Ruhai Zou | 2012 | BMC Cancer2012，12，4： | 1 |
| 15 | Atmospheric particulate mercury in Changchun city, China显示文摘 | Fang Fengman Wang Qichao Liu Ruhai | 2001 | Atmospheric Environment2001，35，： | 1 |
| 16 | Amperometrie biosensor based on tyrosinase immobilized on a boron-doped diamond electrode 显示文摘 | ZHOU Yanli TIAN Ruhai ZHI Jinfang | 2007 | Biosens Bioelectron2007，22，82： | 1 |
| 17 | Unreliable CCSDS File Delivery Protocol (CFDP) over Cislunar Communication Links 显示文摘 | WANG Ruhai SHRESTHA B L WU X | 2010 | IEEE Transactions on Aerospace and Electronic Systems2010，46，1： | 1 |
| 18 | Licklider Transmission Protocol (LTP)-Based DTN for Cislunar Communications显示文摘 | WANG Ruhai BURLEIGH S PARIKH P | 2011 | IEEE/ACM Transactions on Networking2011，19，2： | 1 |
| 19 | TCP Convergence Layer-Based Operation of DTN for Long-Delay Cislunar Communications 显示文摘 | WANG Ruhai WU Xuan WANG Tiaotiao | 2010 | IEEE Systems Journal2010，4，3： | 1 |
| 20 | DTN Licklider Transmission Protocol (LTP) over Asymmetric Space Channels显示文摘 | YU Qian WANG Ruhai SUN Xue | 2013 | IEEE Aerospace and Electronic Systems Magazine2013，28，5： | 1 |
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