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| 1 | Characteristics of dissolved organic matter(DOM) in leachate with different landfill ages显示文摘学习的主要目的是调查溶解有机物(DOM ) 的特征在沥滤通过化学、分光镜、元素的分析与不同垃圾堆年龄吃了。胡敏酸(哈) , fulvic (FA ) ,并且吸水(HyI ) 部分被与阳离子交换尸方法相结合的 XAD-8 树脂孤立并且净化。荧光刺激排放矩阵光谱学(EEM ) 的分析结果表明荧光山峰是为年轻垃圾堆的像蛋白质的荧光沥滤当为中等、旧的垃圾堆的荧光山峰沥滤时,吃了吃分别地是象腐殖一样和象 fulvic 一样荧光。元素的分析证明那碳,氢,和氮内容与垃圾堆年龄减少了,当氧内容增加了时。而且,在这些孤立的部分的氮内容列在后面:哈 >
HyI >
FA。元素的分析,英尺红外,和荧光 EEM 的结果也证实脂肪族的功能的组的芳香的碳和部分更充满沥滤与增加垃圾堆年龄吃了样品。 | HUO Shouliang XI Beidou YU Haichan HE Liansheng FAN Shilei LIU Hongliang | 2008 | Journal of Environmental Sciences2008,20,4: | 52 |
| 2 | U–Pb ages and Hf isotopes for detrital zircons from quartzite in the Paleoproterozoic Songshan Group on the southwestern margin of the North China Craton显示文摘In situ U-Pb dating and Lu-Hf isotopic analysis were carried out for detrital zircons from quartzite in the Paleoproterozoic Songshan Group on the southern margin of the North China Craton (NCC). The re- sults provide further constraints on the crustal formation and evolution history of NCC. Four 207Pb/206Pb age populations were obtained from 99 analyses, with clusters at ~3.40 Ga, 2.77―2.80 Ga, ~2.50 Ga and 2.34 Ga, respectively. The 3.40 Ga old zircons have similar Hf isotopic compositions to those from Ar- chean rocks in the Jidong and Anshan areas of NCC. However, crustal remnants older than 3.6 Ga have been identified in the southern margin of NCC, the South China Craton, the northwestern part of the Qinling Orogen and its adjacent area. Thus, it is not easy to trace the source rock from which the 3.40 Ga detrital zircons were derived. It can be inferred that the crustal remnants older than 3.40 Ga might have been widely distributed in the North China Craton. The 2.77―2.80 Ga zircons make up a relatively small proportion and have the highest εHf (t) values (up to 6.1±1.6), consistent with the Hf isotopic composition of the depleted mantle at 2.83 Ga. Their single-stage Hf model age of 2.83 Ga is close to their crystallized age, suggesting that their source rocks were extracted from the contemporaneous depleted mantle. The ~2.50 Ga zircon grains constitute about 85% of the total grain population and their Hf isotopic compositions indicate major growth of juvenile crust at ~2.50 Ga but minor reworking of ancient crust. The youngest zircon dated in this study gave an U-Pb age of 2337±23 Ma, which can be considered the maximum depositional age of the formation of the Songshan Group. | DIWU ChunRong SUN Yong YUAN HongLin WANG HongLiang ZHONG XingPing LIU XiaoMing | 2008 | Chinese Science Bulletin2008,53,18: | 54 |
| 3 | ~4.1 Ga xenocrystal zircon from Ordovician volcanic rocks in western part of North Qinling Orogenic Belt显示文摘High-precision U-Pb dating by in situ LA-ICP-MS yields an age of 4079±5 Ma for a xenocrystal zircon from Ordovician volcanics of the Caotangou Group in western part of the North Qinling Orogenic Belt. As a result, the North Qinling Orogenic Belt becomes one of a few localities in the world that contain Hadean age records (4276±6 Ma and 4404±8 Ma detrital zircons from Jack Hill of the Yilgarn craton, 4016 Ma Acasta gneisses of the Wopmay Orogeny and Burang quartzite with detrital zircon of 4103 Ma in Tibet). It is also the first report of the Hadean age in Phanerozoic volcanics. The finding of the 4.1 Ga xenocrystal zircon provides not only the geochronological record of the oldest crustal materials in China, but also the condition for further search for rocks forming in the region during the early time of the Earth’s evolution. Thirty-six zircon U-Pb dates from the Ordovician volcanic rocks are subgrouped into seven generations that represent different tectono-magmatic events in the North Qinling Orogenic Belt. Among them, two periods of 0.9-1.5 Ga and 0.4-0.5 Ga are consistent with Mesoproterozoic and Early Paleozoic orogenies, respectively. | WANG HongLiang CHEN Liang SUN Yong LIU XiaoMing xu XueYi CHEN JuanLu ZHANG Hong DIWU ChunRong | 2007 | Chinese Science Bulletin2007,52,21: | 23 |
| 4 | Agriculture Green Development: a model for China and the world显示文摘Realizing sustainable development has become a global priority.This holds,in particular,for agriculture.Recently,the United Nations launched the Sustainable Development Goals(SDGs),and the Nineteenth National People’s Congress has delivered a national strategy for sustainable development in China—realizing green development.The overall objective of Agriculture Green Development(AGD)is to coordinate'green'with'development'to realize the transformation of current agriculture with high resource consumption and high environmental costs into a green agriculture and countryside with high productivity,high resource use efficiency and low environmental impact.This is a formidable task,requiring joint efforts of government,farmers,industry,educators and researchers.The innovative concept for AGD will focus on reconstructing the whole crop-animal production and food production-consumption system,with the emphasis on high thresholds for environmental standards and food quality as well as enhanced human well-being.This paper addresses the significance,challenges,framework,pathways and potential solutions for realizing AGD in China,and highlights the potential changes that will lead to a more sustainable agriculture in the future.Proposals include interdisciplinary innovations,whole food chain improvement and regional solutions.The implementation of AGD in China will provide important implications for the countries in developmental transition,and contribute to global sustainable development. | Jianbo SHEN Qichao ZHU Xiaoqiang JIAO Hao YING Hongliang WANG Xin WEN Wen XU Tingyu LI Wenfeng CONG Xuejun LIU Yong HOU Zhenling CUI Oene OENEMA William JDAVIES Fusuo ZHANG | 2020 | Frontiers of Agricultural Science and Engineering2020,7,1: | 18 |
| 5 | A model and experimental study of phosphate uptake kinetics in algae:Considering surface adsorption and P-stress显示文摘Phosphorus is an important limiting nutrient in many ecosystems.Consequently,there is increasing interest on phosphate uptake and algal growth due to the increasing frequency and magnitude of algal blooms induced by eutrophication.The co-existence of surface adsorbed and intracellular phosphorus pools indicate that phosphate uptake by phytoplankton is,to some extent,a two-stage kinetic process.However,almost all previous uptake models considered the internal uptake stage only and ignored the possible impact of surface adsorption.In this article,a two-stage kinetic uptake model considering both surface adsorption and P-stress on phosphate uptake by algae was constructed and compared to conventional one-stage models,based on experimental data on short-term uptake kinetics of a green algae S.quadricauda.Results indicated that with suitable parameters,the two-stage uptake model not only fit the experimental data better,but also gave more reasonable and realistic explanations to the phosphate uptake process.The results are meaningful as surface-adsorption of phosphate may affect the uptake process of phosphate and assist in understanding realistic phosphate uptake kinetics in phytoplankton. | Bo Yao Beidou Xi Chunming Hu Shouliang Huo Jing Su Hongliang Liu | 2011 | Journal of Environmental Sciences2011,23,2: | 15 |
| 6 | Overexpression of a dominant-negative mutant of SIRT1 in mouse heart causes cardiomyocyte apoptosis and early-onset heart failure显示文摘SIRT1,a mammalian ortholog of yeast silent information regulator 2(Sir2),is an NAD+-dependent protein deacetylase that plays a critical role in the regulation of vascular function.The current study aims to investigate the functional significance of deacetylase activity of SIRT1 in heart.Here we show that the early postnatal hearts expressed the highest level of SIRT1deacetylase activity compared to adult and aged hearts.We generated transgenic mice with cardiac-specific expression of a dominant-negative form of the human SIRT1(SIRT1H363Y),which represses endogenous SIRT1 activity.The transgenic mice displayed dilated atrial and ventricular chambers,and died early in the postnatal period.Pathological,echocardiographic and molecular phenotype confirmed the presence of dilated cardiomyopathy.Terminal deoxynucleotidyl transferase-mediated dUTP nick-end-labeling analysis revealed a greater abundance of apoptotic nuclei in the hearts of transgenic mice.Furthermore,we show that cardiomyocyte apoptosis caused by suppression of SIRT1 activity is,at least in part,due to increased p53acetylation and upregulated Bax expression.These results indicate that dominant negative form of SIRT1(SIRT1H363Y)overexpression in mouse hearts causes cardiomyocyte apoptosis and early-onset heart failure,suggesting a critical role of SIRT1 in preserving normal cardiac development during the early postnatal period. | MU WenLi ZHANG QingJun TANG XiaoQiang FU WenYan ZHENG Wei LU YunBiao LI HongLiang WEI YuSheng LI Li SHE ZhiGang CHEN HouZao LIU DePei | 2014 | Science China(Life Sciences)2014,57,9: | 12 |
| 7 | Cell multiplication, apoptosis and p-Akt protein expression of bone mesenchymal stem cells of rat under hypoxia environment显示文摘Objective: To elucidate whether cell multiplication, apoptosis, glucose intake and p-Akt protein expression of bone Mesenchy-mal Stem Cells(MSCs) of rats is influenced by a hypoxic environment ex vivo. Methods: Passage 3 of bone marrow MSCs takenfrom Wistar rats, were cultured in a culturing chamber with 94%N2, 1%O2, 5%CO2 at 37℃. At different hypoxia time points, 0, 0.5,1, 4 and 8 h, glucose uptake was assayed by using radiation isotope 3H-G, Apoptotic Rate(AR) and dead rate(DR) were analyzedby flow cytometry(FCM) after Annexin V/PI staining, cell multiplication(by MTT methods) and p-Akt protein by immunocyto-chemistry and western blot. Results: Assay for CD29+, CD44+, CD71+, CD34- , Tn T+(after 5-azacytidine agent inducing) andALP+(after bone differentiation agent inducing) suggested these bone-derived cells were MSCs. The 3H-G intaking ratio(CPM/flask value: 157 ±11, 110 ±11, 107 ±13, 103 ±10, 100 ±9 and 98 ±10) of MSCs at different hypoxia time points, significantlydecreased compared to that of normoxia(P < 0.01) and tended to descend slowly with hypoxia time duration, for which there wasno statistical significance(P > 0.05). The AR(0.09 ±2.03%, 12.9 ±1.72%, 13.7 ±2.26%, 13.8 ±3.01%, 14.1 ±2.78% and 14.7 ±4.01% at 0, 0.5, 1, 4 and 8 h, respectively, P < 0.01) and DR (0.04 ±1.79%, 0.93 ±1.85%, 3.11 ±2.14%, 4.09 ±2.36%, 4.72 ±2.05% and 4.91 ±3.72% at 0, 0.5, 1, 4 and 8 h, respectively, P < 0.05) at different hypoxia time points significantly increasedcompared to those time in normoxia; The AR further went up with time (P < 0.05), however there was no statistical significance(P > 0.05) for the DR. Optical absorption value of MTT methods at different hypoxia time points significantly decreased com-pared to those with a corresponding normoxia time (P < 0.01) and degraded with time (in an hypoxic environment - P < 0.01).IOD of p-Akt protein of MSCs at different hypoxia time points significantly increased (0.367 ±0.031, 0.556 ±0.023, 0.579 ±0.013, 0.660 ±0.024, 0.685 ±0.039 and 0.685 ±0.011, respectively) compared to their equivalents in normoxia (P<0.05), how-ever, there was no statistical significance (P > 0.05) for different hypoxia time points. Hypoxia may result in ultramicrostructurechanges, such as defluvium of Microvilli, apoptotic body, 'margination'and so on and are further aggravated with hypoxia timestretching. Conclusion: Hypoxia may lead to a depression of MSCs intaking glucose, creep of cell multiplication, upregulation ofp-Akt protein and apoptosis of MSCs ex vivo. | Hongliang Kong Ningning Liu Xin Huo Bo Wang Haipeng Zhang Mingyu Gao Guoxian Qi | 2007 | Journal of Nanjing Medical University2007,21,4: | 10 |
| 8 | Performance and mechanism of Cr(Ⅵ)removal by zero-valent iron loaded onto expanded graphite显示文摘Zero-valent iron(ZⅥ) was loaded on expanded graphite(EG) to produce a composite material(EG-ZⅥ) for efficient removal of hexavalent chromium(Cr(Ⅵ)). EG and EG-ZⅥ were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM),Fourier-transform infrared(FTIR) spectroscopy and Brunauer–Emmett–Teller(BET) analysis. EG-ZⅥ had a high specific surface area and contained sub-micron sized particles of zero-valent iron. Batch experiments were employed to evaluate the Cr(Ⅵ) removal performance. The results showed that the Cr(Ⅵ) removal rate was 98.80% for EG-ZⅥ,which was higher than that for both EG(10.00%) and ZⅥ(29.80%). Furthermore, the removal rate of Cr(Ⅵ) by EG-ZⅥ showed little dependence on solution p H within a p H range of 1–9.Even at pH 11, a Cr(Ⅵ) removal rate of 62.44% was obtained after reaction for 1 hr. EG-ZⅥ could enhance the removal of Cr(Ⅵ) via chemical reduction and physical adsorption,respectively. X-ray photoelectron spectroscopy(XPS) was used to analyze the mechanisms of Cr(Ⅵ) removal, which indicated that the ZⅥ loaded on the surface was oxidized, and the removed Cr(Ⅵ) was immobilized via the formation of Cr(III) hydroxide and Cr(III)–Fe(III)hydroxide/oxyhydroxide on the surface of EG-ZⅥ. | Congbin Xu Wenjie Yang Weijiang Liu Hongliang Sun Chunlei Jiao Ai-jun Lin | 2018 | Journal of Environmental Sciences2018,30,5: | 10 |
| 9 | Decolorization of Methyl Orange by a new clay-supported nanoscale zero-valent iron:Synergetic effect,efficiency optimization and mechanism显示文摘In this study, a novel nanoscale zero-valent iron(n ZVI) composite material was successfully synthesized using a low-cost natural clay, 'Hangjin 2#clay'(HJ clay) as the support and tested for the decolorization of the azo dye Methyl Orange(MO) in aqueous solution by n ZVI particles. According to the characterization and MO decolorization experiments, the sample with 5:1 HJ clay-supported n ZVI(HJ/n ZVI) mass ratio(HJ-n ZVI5) showed the best dispersion and reactivity and the highest MO decolorization efficiency. With the same equivalent Fe0 dosage, the HJ-n ZVI1 and HJ-n ZVI5 samples demonstrated a synergetic effect for the decolorization of MO: their decolorization efficiencies were much higher than that achieved by physical mixing of HJ clay and n ZVIs, or the sum of HJ clay and n ZVIs alone. The synergetic effect was primarily due to the improved dispersion and more effective utilization of the n ZVI particles on/in the composite materials. Higher decolorization efficiency of MO was obtained at larger HJ-n ZVI dosage, higher temperature and under N2 atmosphere, while the MO initial concentration and p H were negatively correlated to the efficiency. HJ clay not only works as a carrier for n ZVI nanoparticles, but also contributes to the decolorization through an 'adsorption-enhanced reduction' mechanism. The high efficiency of HJ-n ZVI for decontamination gives it great potential for use in a variety of remediation applications. | Xiaoguang Li Ying Zhao Beidou Xi Xiaoguang Meng Bin Gong Rui Li Xing Peng Hongliang Liu | 2017 | Journal of Environmental Sciences2017,29,2: | 9 |
| 10 | Assessment of the sources and transformations of nitrogen in a plain river network region using a stable isotope approach显示文摘The great spatial and temporal variability in hydrological conditions and nitrogen(N)processing introduces large uncertainties to the identification of N sources and quantifying N cycles in plain river network regions. By combining isotopic data with chemical and hydrologic measurements, we determined the relative importance of N sources and biogeochemical N processes in the Taige River in the East Plain Region of China. The river was polluted more seriously by anthropogenic inputs in winter than in summer. Manure and urban sewage effluent were the main nitrate(NO-3) sources, with the nitrification of N-containing organic materials serving as another important source of NO-3. In the downstream, with minor variations in hydrological conditions, nitrification played a more important role than assimilation for the decreasing ammonium(NH+4-N) concentrations.The N isotopic enrichment factors(ε) during NH+4utilization ranged from- 13.88‰ in March to- 29.00‰ in July. The ratio of the increase in δ18O and δ15N of river NO-3in the downstream was 1.04 in January and 0.92 in March. This ratio indicated that NO-3assimilation by phytoplankton was responsible for the increasing δ15N and δ18O values of NO-3in winter. The relationships between δ15N of particulate organic nitrogen and isotopic compositions of dissolved inorganic nitrogen indicated that the phytoplankton in the Taige River probably utilized NH+4preferentially and mainly in summer, while in winter, NO-3assimilation by phytoplankton was dominant. | Jingtao Ding Beidou Xi Qigong Xu Jing Su Shouliang Huo Hongliang Liu Yijun Yu Yanbo Zhang | 2015 | Journal of Environmental Sciences2015,27,4: | 9 |
| 11 | Overview of China's Antarctic research progress 1984–2016显示文摘It is more than 30 years since the first Chinese National Antarctic Research Expedition(CHINARE) landed in Antarctica in 1984, representing China's initiation in polar research. This review briefly summarizes the Chinese Antarctic scientific research and output accomplished over the past 30 years. The developments and progress in Antarctic research and the enhancement of international scientific cooperation achieved through the implementation of the CHINARE program have been remarkable. Since the 1980 s, four permanent Chinese Antarctic research stations have been established successively and 33 CHINAREs have been completed. The research results have been derived from a series of spatiotemporal observations in association with various projects and multidisciplinary studies in the fields of oceanography, glaciology, geology, geophysics, geochemistry, atmospheric science, upper atmospheric physics, Antarctic astronomy, biology and ecology, human medicine, polar environment observation, and polar engineering. | CHEN Liqi LIU Xiaohan BIAN Lingen CHEN Bo HUANG Hongliang HU Hongqiao LUO Wei SHI Guitao SHI Jiuxin XU Chengli YANG Guang ZHAO Yue ZHANG Shaohua | 2017 | Advances in Polar Science2017,28,3: | 9 |
| 12 | Targeted delivery of chlorogenic acid by mannosylated liposomes to effectively promote the polarization of TAMs for the treatment of glioblastoma显示文摘Tumor-associated macrophages(TAMs)generally display an immunosuppressive M2 phenotype and promote tumor progression and metastasis,suggesting their potential value as a target in cancer immunotherapy.Chlorogenic acid(CHA)has been identified as a potent immunomodulator that promotes the polarization of TAMs from an M2 to an M1 phenotype.However,rapid clearance in vivo and low tumor accumulation have compromised the immunotherapeutic efficacy of CHA in clinical trials.In this study,mannosylated liposomes are developed for targeted delivery of CHA to TAMs.The immunoregulatory effects of CHA,along with the overall antitumor efficacy of CHA-encapsulated mannosylated liposomes,are investigated through in vitro and in vivo experiments.The prepared CHA-encapsulated mannosylated liposomes exhibit an ideal particle size,favorable stability,and preferential accumulation in tumors via the mannose receptor-mediated TAMs-targeting effects.Further,CHA-encapsulated mannosylated liposomes inhibit G422 glioma tumor growth by efficiently promoting the polarization of the pro-tumorigenic M2 phenotype to the anti-tumorigenic M1 phenotype.Overall,these findings indicate that CHA-encapsulated mannosylated liposomes have great potential to enhance the immunotherapeutic efficacy of CHA by inducing a shift from the M2 to the M1 phenotype. | Jun Ye Yanfang Yang Jing Jin Ming Ji Yue Gao Yu Feng Hongliang Wang Xiaoguang Chen Yuling Liu | 2020 | Bioactive Materials2020,5,3: | 9 |
| 13 | Brain-derived neurotrophic factor induces neuron-like cellular differentiation of mesenchymal stem cells derived from human umbilical cord blood cells in vitro显示文摘Human umbilical cord blood was collected from full-term deliveries scheduled for cesarean section.Mononuclear cells were isolated,amplified and induced as mesenchymal stem cells.Isolated mesenchymal stem cells tested positive for the marker CD29,CD44 and CD105 and negative for typical hematopoietic and endothelial markers.Following treatment with neural induction medium containing brain-derived neurotrophic factor for 7 days,the adherent cells exhibited neuron-like cellular morphology.Immunohistochemical staining and reverse transcription-PCR revealed that the induced mesenchymal stem cells expressed the markers for neuron-specific enolase and neurofilament.The results demonstrated that human umbilical cord blood-derived mesenchymal stem cells can differentiate into neuron-like cells induced by brain-derived neurotrophic factor in vitro. | Lei Chen Zhongguo Zhang Bing Chen Xiaozhi Liu Zhenlin Liu Hongliang Liu Gang Li Zhiguo Su Junfei Wang Guozhen Hui | 2011 | Neural Regeneration Research2011,6,13: | 8 |
| 14 | Turnover and loss of nitrogenous compounds during composting of food wastes显示文摘Few people have so far explored into the research of the dynamics of various nitrogenous compounds(including water-soluble nitrogen)in composting of food wastes.This study aimed to investigate the solid-phase nitrogen,water-soluble nitrogen,nitrogen loss together with ammonia volatilization in the process of food wastes composting.A laboratory scale static aerobic reactor in the experiment was employed in the composting process of a synthetic food waste,in which sawdust was used as the litter amendment.In the experiment,oxygen was supplied by continuous forced ventilation for 15 days.The results have shown that the concentrations of total nitrogen and organic nitrogen decrease significantly in the composting process,whereasNH_(4)^(+)-N concentration increases together with little fluctuation in NO_(3)^(-)-N.After composting,the total content of the water-soluble nitrogen compounds in the compost greatly increased,the total nitrogen loss amounted to 50% of the initial nitrogen,mainly attributed to ammonia volatilization.56.7% of the total ammonia volatilization occurred in the middle and late composting of the thermophilic stage.This suggested that the control at the middle and late composting of thermophilic stage is the key to nitrogen loss in the food waste compost. | Yanmei YANG Xiangfeng ZHANG Zhifeng YANG Beidou XI Hongliang LIU | 2008 | Frontiers of Environmental Science & Engineering2008,2,2: | 8 |
| 15 | Investigation of octupole effects in superheavy nuclei with improved potential-energy-surface calculations显示文摘It has been found that high-order deformation (e.g.β6) can have important effects on the structures of superheavy nuclei. In the present work, we investigate octupole deformation effects on superheavy nuclei with an improved potential-energy-surface (PES) calculation by including reflection-asymmetric deformations in a space of (β2 ,β3 ,β4 , β5). The calculations give various deformations including highly deformed (β2 ≈ 0.4) and superdeformed (β2 ≈ 0.7) shapes. The octupole-deformation degree of freedom mainly affects the fission barrier beyond the second minimum of PES. | WANG HuaLei LIU HongLiang XU FuRong JIAO ChangFeng | 2012 | Chinese Science Bulletin2012,57,15: | 7 |
| 16 | Characterization and Apparent Kinetics of Polymerization of 1-Decene Catalyzed by Boron Trifluoride/Alcohol System显示文摘Poly-α-olefin(PAO) synthetic oil is the base oil of high-quality lubricants, and has a huge market potential.We illustrate PAO synthesis by catalytic polymerization of 1-decene with a boron trifluoride(BF_3)/alcohol system. Gas chromatography–mass spectrometry, proton nuclear magnetic resonance and ^(13) C nuclear magnetic resonance analysis confirmed dimer, trimer and tetramer structures of PAO. Each component contained branched chains with a 1,2 insertion of a head-to-tail link; a 2,1 insertion of a tail-to-tail link and a methyl-containing linked structure. At a low conversion rate, the reaction rate was related directly with the reaction temperature and the catalyst/1-decene concentration. An apparent kinetic equation for PAO formation was determined during 1-decene polymerization. | Wang Sihan Wang Libo Liu Tong Ma Lili Huo Hongliang Wang Jian | 2017 | China Petroleum Processing & Petrochemical Technology2017,19,3: | 7 |
| 17 | Recent progress in computational thermal radiative transfer显示文摘The equation describing the transfer of radiant energy in semitransparent media is radiative transfer equation. In three-dimensional semitransparent media, radiative intensity is a function of 7 dimensions, which can only be solved through the numerical method in most circumstances. Numerical simulation has become an important way in the study and application of the theory of thermal radiative transfer in semitransparent media. This paper reviews the recent progress of Chinese scholars in the field of computational thermal radiative transfer, and proposes some important subjects in this field for future study. | TAN HePing LIU LinHua YI HongLiang ZHAO JunMing QI Hong TAN JianYu | 2009 | Chinese Science Bulletin2009,54,22: | 7 |
| 18 | A novel Al-10Si-2Fe master alloy and its ef ect on inoculation of eutectic cells in Sr-modii ed A356 alloy显示文摘To investigate the possibility of inoculating eutectic cells, a novel Al-10Si-2Fe master alloy was synthesized and tested in Sr-modifi ed A356 alloy. The new master alloy that consists of α-Al, Si and β-Al5FeSi phases was prepared by a casting process, and the silicon phase was found to grow epitaxially from the β-Al5FeSi particles. The inoculation effi ciency of the new master alloy on Sr-modifi ed A356 alloy has been investigated by quenching experiment and thermal analysis. With the addition of the new master alloy, the area density of eutectic cells is effectively increased by 100% and the eutectic growth temperature is increased by 1.5 oC. Therefore, the new master alloy is deduced to introduce nucleating substrates for eutectic cells and to refi ne the eutectic cells in Sr-modifi ed A356 alloy. There is no poisonous interaction between the Al-10Si-2Fe master alloy and the Sr in this study. Consequently, the mechanical properties have been improved by the addition of the new master alloy. | Zhang Yong Zheng Hongliang Liu Yue Shi Lei Xu Rongfu Tian Xuelei | 2014 | China Foundry2014,11,2: | 7 |
| 19 | Seismic attributes and integrated prediction of fractured and caved carbonate reservoirs in the Tarim Basin,China显示文摘The carbonate reservoirs in the Tarim Basin are characterized by anisotropy and strong heterogeneity.Combined with an integrated analysis of data from seismic,geology,and drilling results,a series of attributes which are suitable for fractured and caved carbonate reservoir prediction is discussed,including amplitude,coherence analysis,spectra decomposition,seismic absorption attenuation analysis and impedance inversion.Moreover,3-D optimization of these attributes is achieved by integration of multivariate discriminant analysis and principle component analysis,where the logging data are taken as training samples.Using the optimized results,the spatial distribution and configuration features of the caved reservoirs can be characterized in detail.This technique not only improves the understanding of the spatial distribution of current reservoirs but also provides a significant basis for the discovery and production of carbonate reservoirs in the Tarim Basin. | Liu Lifeng Sam Zandong Sun Yang Haijun Han Jianfa Gao Hongliang Jing Bing Zhu Xinghui | 2011 | Petroleum Science2011,8,4: | 6 |
| 20 | Development of methods for establishing nutrient criteria in lakes and reservoirs: A review显示文摘Nutrient criteria provide a scientific foundation for the comprehensive evaluation, prevention,control and management of water eutrophication. In this review, the literature was examined to systematically evaluate the benefits, drawbacks, and applications of statistical analysis,paleolimnological reconstruction, stressor-response model, and model inference approaches for nutrient criteria determination. The developments and challenges in the determination of nutrient criteria in lakes and reservoirs are presented. Reference lakes can reflect the original states of lakes, but reference sites are often unavailable. Using the paleolimnological reconstruction method, it is often difficult to reconstruct the historical nutrient conditions of shallow lakes in which the sediments are easily disturbed. The model inference approach requires sufficient data to identify the appropriate equations and characterize a waterbody or group of waterbodies, thereby increasing the difficulty of establishing nutrient criteria. The stressor-response model is a potential development direction for nutrient criteria determination, and the mechanisms of stressor-response models should be studied further. Based on studies of the relationships among water ecological criteria, eutrophication, nutrient criteria and plankton, methods for determining nutrient criteria should be closely integrated with water management requirements. | Shouliang Huo Chunzi Ma Beidou Xi Yali Zhang Fengchang Wu Hongliang Liu | 2018 | Journal of Environmental Sciences2018,30,5: | 6 |