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| 1 | LES investigation of swirl intensity effect on unconfined turbulent swirling premixed flame显示文摘A finite reaction rate model is presented as a closure of large eddy simulation(LES) to numerically study an open premixed methane/air swirling flame. The resultant model is firstly validated by comparing with reported data and then employed to investigate the effect of swirling intensity on flow field, flame characteristics and combustion instability of the swirling flame. Three different swirl numbers are considered. The LES results show that as swirling intensity increases, the vortex entrainment and micro-mixing are enhanced, leading to more lean equivalent ratios at flame front; consequently, higher swirling number causes lower flame temperatures and slower CO oxidization; for all simulated swirl numbers,flame fronts are completely located out of the recirculation zones and anchored at the inner surface of the annular swirling steams; swirl number has a crucial effect on swirling flame extension toward radial and tangential dimensions and then significantly affects streamwise flame length, which is a great influencing factor on combustion instability; vortex-induced disturbance on flame in streamwise plays a critical role in combustion instability. | Zhihua Wang Yanwei Xu Yu L Zhijun Zhou Junhu Zhou Kefa Cen | 2014 | Chinese Science Bulletin2014，59，33： | 6 |
| 2 | Who is the“murderer”of the bloom in coastal waters of Fujian,China,in 2019?显示文摘On May 24-29,2019,a bloom occurring in Pingtan coastal areas of Fujian Province caused mass mortality of cage-cultured fish(Plectorhinchus cinctus and Pagrosomus major).During the bloom,two major causative organisms were present:Prorocentrum donghaiense(at a concentration of 1.46×10^7 cells/L)and an unknown naked dinoflagellate(4.58×10^6 cells/L).The naked dinoflagellate was isolated and cultured in this study,and its morphological features were examined using light microscopy and scanning electron microscopy.The large subunit(LSU)of the rRNA gene and the internal transcribed spacer(ITS)region of the naked dinoflagellate were also sequenced for field bloom samples and lab culture strains(PT-A and PT-B).On the basis of its morphological characteristics and molecular sequences,the unknown naked dinoflagellate was identified as Karlodinium digitatum.According to the phylogenetic analysis,the Karl.digitatum was most closely related to Karlodinium australe and Karlodinium armiger,and the three species clustered into a single clade of Karlodinium with bootstrap/posterior probability values of 95%/0.99 and 86%/0.99 inferred from LSU and ITS sequences,respectively.Karl.digitatum was first reported as Karenia digitata,a new harmful algal species bloomed in Hong Kong,China,in 1998.In present study,we gave a detailed morphological and phylogenetic description of Karl.digitatum and submitted the molecular sequences of this species to GenBank for the first time. | CEN Jingyi WANG Jianyan HUANG Lifen DING Guangmao QI Yuzao CAO Rongbo CUI Lei Lü Songhui | 2020 | Journal of Oceanology and Limnology2020，38，3： | 5 |
| 3 | Spatio-temporal variations of harmful algal blooms along the coast of Guangdong,Southern China during 1980–2016显示文摘Harmful algal blooms (HABs) have become a recurring problem, posing severe impacts on marine ecosystems, fisheries, mariculture industry, and even public health. In this study, the geographic information system (GIS) was utilized to determine spatial and temporal characteristics of HAB events in the coastal waters of Guangdong from 1980–2016. We analyzed distribution patterns and characteristics of HABs by dividing the coast of Guangdong into well-known bays, estuary and coastal waters. Results showed that there were a total of 337 HABs recorded in Guangdong coastal waters. Spatial and temporal distributions varied among diff erent regions. Most HABs occurred in the Mirs Bay, followed by the west coast of Daya Bay, while a few occurred in the west and east coasts of Guangdong but with an increasing trend in the past two decades. HABs occurred mostly in warmer months of March to May in the western coast of Guangdong, March and April in Mirs Bay, April in Zhujiang (Pearl) River estuary, November in eastern coast of Guangdong. For Daya Bay, most HABs were reported between March and September. The most frequently occurring HABs species were Noctiluca scintillans , Phaeocystis globosa , Skeletonema costatum and Scrippsiella trochoidea , occurring mostly in Mirs Bay, western Guangdong coast area, eastern Guangdong coast area and Zhujiang River estuary and Daya Bay, respectively. Ichthyotoxic blooms were more common than toxic blooms, and Heterosigma akashiwo , Chattonella marina , Karenia mikimotoi and P haeocystis globosa were the most common ichthyotoxic species. Our results provide baseline information useful for policy making and management of HABs in the region. | LI Li Lü Songhui CEN Jingyi | 2019 | Journal of Oceanology and Limnology2019，37，2： | 4 |
| 4 | First Principle Calculation of Electromagnetic Mechanism for Fe_2Si Bulk Material显示文摘The electronic structure and the magnetic properties of Fe_2Si bulk have been calculated by the first-principle density function theory method. The band structure shows that the hexagonal Fe^2 Si bulk is ferromagnetic which is a metal structure under spin-up, and a semiconductor with the band gap of 0.518 eV under spin-down. The density of states shows the Fe^1 3d–spin and Fe^3 3d–spin in the electronic system are the main factors that is the source of the ferromagnetic properties of Fe_2Si bulk. The electronic structure Si-ions is 3s23p6 and that of Fe-ions is e_g^2↑e_g^(*1)↓t_(2g)~3↑. The molecular magnetic moment of Fe_2Si is 2.00 μB. The potential diagram of Fe_2Si bulk shows the formation of covalent and ionic bonds between the Fe atom and the Si atom, it leads to the center charge of Fe is polarized and off center position. These special properties of Fe_2Si bulk are mainly caused by d-d exchange and p-d hybridization. The results offer a certain reference for the magnetic semiconductor Fe_2Si material. | 李瑞杰 CEN Weifu 杨吟野 Lü Lin XIE Quan | 2019 | Journal of Wuhan University of Technology(Materials Science)2019，34，1： | 2 |
| 5 | Cellulase production by solid state fermentation on lig- nocellulosic waste from the xylose industry 显示文摘 | XIA L CEN P | 1999 | Proc Biochem1999，34，9： | 1 |
| 6 | Angiotensin-converting enzyme gene polymorphism and its association with essential hypertension in a Tibetan population显示文摘 | GESANG L LIU G CEN W | 2002 | Hypertens Res2002，25，3： | 1 |
| 7 | Enhancement of 5-aminolevulinate production with recombinant Escherichia coli using batch and fed-batch culture system显示文摘 | Fu W Q Lin J P Cen P L | 2008 | Bioresource Technology2008，99，11： | 1 |
| 8 | The role of the extracellular signalrelated kinase signaling pathway in osteogenic differentiation of human adipose-derived stem cells and in adipogenic transition initiated by dexamethasone显示文摘 | Liu Q Cen L Zhou H | 2009 | Tissue Eng Part A2009，15，11： | 1 |
| 9 | Multiple roles of the p75 neurotrophin re- ceptor in the nervous system显示文摘 | Chen Y Zeng J Cen L | 2009 | The journal of International Medical Research2009，37，： | 1 |
| 10 | A comparative study of proliferation and os- teogenic differentiation of adipose-derived stem cells on akermanite and beta-TCP ceramics 显示文摘 | Liu Q Cen L Yin S | 2008 | Biomaterials2008，29，36： | 1 |
| 11 | Ozonation catalyzed by the amorphous zinc silicate for the degradation of pchloronitrobenzene in drinking water显示文摘 | LIU Y SHEN M CEN L | 2011 | Applied Catalysis A:General2011，403，12： | 1 |
| 12 | Efficient production of poly-γ-glutamic acid by Bacillus subtilis ZJU-7 显示文摘 | Shi F Xu Z N Cen P L | 2006 | Appl Biochem Biotechnol2006，133，： | 1 |
| 13 | Differentiation of adipese-derived stem cells into contractile smooth muscle cells induced by transforming growth factor-botal and bone morphogenetic protein-4显示文摘 | Wang C Yin S Cen L | 2010 | Tissue Eng Part A2010，16，4： | 1 |
| 14 | Enhanced critical heat flux during quenching of extremely dilute aqueous colloidal suspensions with graphene oxide nanosheets显示文摘 | Zhang L YuZ T Li D Y Fan LW Zhu YZ Hong R H HuY C Fan J R Cen K F | 2013 | ASME Journal of Heat Transfer2013，135，05： | 1 |
| 15 | Repair of articular cartilage defect in n-on-weight bearing areas using adipose derived stem cells loaded polyglycolic acid mesh显示文摘 | Cui L Wu Y Cen L | | 0，，14： | 1 |
| 16 | Levulinic acid production from wheat straw显示文摘 | Chang C Cen P L Ma X J | 2007 | Bioresource Technology2007，98，： | 1 |
| 17 | Free-form microlens for illumination applications 显示文摘 | Sun L Jin S Cen S | 2009 | Applied Optics2009，48，29： | 1 |
| 18 | Bilateral retinal mieroglial response to unilateral optic nerve transection in rats显示文摘 | Cen LP Han M Zhou L | 2015 | Neuroscience2015，311，： | 1 |
| 19 | Levulinie acid production from wheat straw显示文摘 | CHANG C CEN P L MA X J | 2007 | Bioresource Technology2007，98，7： | 1 |
| 20 | Controllable coherent population transfers in superconducting qubits for quantum computing显示文摘 | Wei L F Johansson J R Cen L X | 2008 | Phys Rev Lett2008，100，11： | 1 |
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