OALib Journal期刊

ISSN: 2333-9721



匹配条件: “<br>谢辰” ,找到相关结果约254560条。
Research on Matrix Reconstruction in RAID Controller

JIANG Guo-song,ZOU Chen,XIE Chang-sheng,<br>姜国松,,长生
计算机科学 , 2009,
Abstract: Erasure code provides a specific coding method for data reconstruction which is for the protection of those multiple failure in the disk array.In RAID applications,with Erasure code strips for data loss modeling to optimize reconstruction algorithm to the entire strip reconstruction.In other words,they are only applied to a high degree of fault-related sectors which is the sequential sector on the lost disk.We addressed two more general issues:data recovery from scattered or not related erase sectors which ...
第三军医大学学报 , 2013,
第三军医大学学报 , 2010,
计算机科学 , 2009, DOI: 10.11896/j.issn.1002-137X.2009.07.064
Abstract: 对于数据重构,纠删码提供了一个特定的编码方法,用于保护那些在磁盘阵列中的多重失效。在raid的应用中,用纠删码为条块数据丢失建模,以便优化重构算法来重构整个条块。换句话说,它们只应用于高度相关的扇区故障,也就是在丢失磁盘上连续的扇区。定位了两个更一般的问题:①由分散或不相关的擦除导致丢失的数据的恢复;②由单个磁盘(存在许多故障时)导致的部分但连续的丢失数据的恢复。对两个问题所建议的方法是完全一般化的,并且能够应用于任何纠删码,但是此方法最适合基于异或的编码。对于分散的擦除,典型的是为每一个丢失扇区的数据规定了两种结果:要么这个丢失的数据被宣布为不可恢复,要么宣布为可恢复。并且,为只依赖于可读扇区的重构提供一个规则。简而言之,这个方法既完整又具有建设性。
High energy dissipative soliton mode-locked fiber oscillator based on a multipass cell

Xie Chen,Hu Ming-Lie,Zhang Da-Peng,Chai Lu,Wang Qing-Yue,<br>,胡明列,张大鹏,柴路,王清月
物理学报 , 2013,
Abstract: To investigate the energy scaling level of large-mode-area photonic crystal fiber-based dissipative soliton mode-locked fiber oscillators under limited pump power, a multipass cell is inserted in the cavity to lower the repetition rate of the system, and thus higher single energy level can be mapped under the same average power level. High energy mode-locked fiber lasers based on two spectral filters with different bandwidths are demonstrated both working in the all-normal dispersion regime at a repetition rate of 15.58 MHz. Employment of filters with FWHMs of 6nm and 12 nm can achieve stable mode-locked pulses with average powers of 3.73 W and 4.9 W, corresponding to single pulse energies as high as 239 nJ and 314 nJ, respectively. The FWHM durations of the dechirped pulses by a transmission grating pair can reach 56 fs and 75 fs, which can generate pulses with peak powers exceeding 3MW in both cases.
Mode locked multi-core photonic crystal fiber laser

Fang Xiao-Hui,Hu Ming-Lie,Song You-Jian,Xie Chen,Chai Lu,Wang Qing-Yue,<br>方晓惠,胡明列,宋有建,,柴路,王清月
物理学报 , 2011,
Abstract: 实验研究了基于掺Yb多芯大模场面积光子晶体光纤的全正色散锁模激光器.增益光纤的18个纤芯呈六角阵列排布,等效的模场直径约为52 μm.激光器基于σ腔结构,腔内没有色散补偿元件,通过半导体可饱和吸收镜实现锁模的自启动.实验获得了平均功率为3.3 W,脉冲宽度为4.92 ps,重复频率为44.68 MHz的锁模脉冲输出,对应的单脉冲能量为74 nJ,脉冲经腔外光栅对压缩为780 fs.
A high power photonic crystal fiber laser oscillator based on nonlinear polarization rotation mode-locking

Zhang Da-Peng,Hu Ming-Lie,Xie Chen,Chai Lu,Wang Qing-Yue,<br>张大鹏,胡明列,,柴路,王清月
物理学报 , 2012,
Abstract: A high power femtosecond fiber laser based on a Yb-doped large mode area photonic crystal fiber operating in an all-normal dispersion regime is experimentally demonstrated. A ring laser cavity is used without any elements for dispersion compensation. Stable mode-locking is achieved through nonlinear polarization rotation and the dissipative function of a filter. The laser directly outputs 1.03 ps chirped pulses at a 49.09 MHz repetition rate for an average power of 10 W, corresponding to a pulse energy of 202 nJ. The pulses are compressed to 95.5 fs with a grating pair outside the cavity.
Approaching 100 nJ pulse energy output from a mode-locked photonic crystal fiber laser

Song You-Jian,Hu MinE-Lie,Xie Chen,Chai Lu,Wang Qing-Yue,<br>宋有建,胡明列,,柴路,王清月
物理学报 , 2010,
Abstract: 设计并搭建了一种支持百纳焦耳量级的单脉冲能量输出的锁模光纤激光器.激光器基于σ型腔结构,采用掺Yb偏振型大模场面积光子晶体光纤作为增益介质,利用半导体可饱和吸收镜实现自启动锁模.激光器内没有色散补偿机理,使其工作在全正色散锁模状态.通过在谐振腔内引入多通长腔使激光器的重复频率降低至11.1 MHz,直接获得了平均功率为1.08 W,单脉冲能量为 97 nJ,脉冲宽度为4.17 ps的稳定锁模脉冲输出,经腔外色散补偿,脉冲宽度压缩至740 fs.
两种多糖作为迟缓爱德华氏菌(Edwardsiella tarda)灭活疫苗佐剂对大菱鲆(Scophthalmus maximus)的免疫保护效果

SUI Hu-Chen,XIE Guo-Si,BIAN Hui-Hui,WANG Xiu-Hu,ZHANG Xiao-Hua,HUANG Jie,<br>隋虎,国驷,边慧慧,王秀华,张晓华,黄倢
海洋与湖沼 , 2012,
Abstract: The immune protection effects of two polysaccharides as the adjuvants of inactivated Edwardsiella tarda vaccine in turbot were studied in this research. The vaccines were prepared with two polysaccharides, astragalus polysaccharides (APS) and glucan (Glu) were added to the inactivated E. tarda vaccine separately. Turbots Scophthalmus maximus were inoculated by intraperitoneal (i.p.) injection. The lysozyme activity (Lyz), superoxide dismutase activity (SOD), and antibody titer in the sera were determined after 28 day post-vaccination; meanwhile, the relative percentage survival (RPS) in each group was compared. The results indicated that the addition of polysaccharide adjuvants in the inactivated vaccine could enhance the immune functions to the vaccinated turbots. The Lyz, SOD, and the antibody titer in the sera of the turbots inoculated with the mixtures of inactivated vaccine and each polysaccharide adjuvant were significantly increased (P<0.05). The RPSin the vaccination group with the mixture of inactivated vaccine and 2.5mg/ml APS and the vaccination group with the mixture of inactivated vaccine and 5mg/ml Glu have reached to the best protection effects at (78.7±1.3)% and (64.0±8.9)%, respectively. The SOD, Lyz, and the antibody titer in the best RPSgroups with the two polysaccharides also reached higher levels than those in the other groups did.
Biodegradation of Di-n-butyl Phthalate by Pseudomonas aeruginosa

WU Wei-zhong,ZHU Qing,FENG Jing,GAO Hang,XIE Chen-qi,WANG Jian-long,<br>吴为中,朱擎,冯菁,高航,,王建龙
环境科学 , 2009,
Abstract: A new small capacity-wide extraction method was proposed for detection of its biodegradation in water. Results showed that the half-life (t1/2) of di-n-butyl phthalate (DBP) biodegradation was 3.60 day when the concentration of DBP was 400 mg/L and the biomass concentration was 2 g/L. The biodegradation process conformed to the first-order kinetic model. Moreover, the whole degradation process could be divided into several steps: adsorption, desorption and degradation. Two metabolites of DBP degradation were identified as mono-butyl phthalate and phthalic acid by gas chromatography-mass spectrometry, which confirmed the dioxygenate process during the hydrolysis of DBP.

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