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Search Results: 1 - 10 of 23468 matches for " Yun Bao "
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Maximal right smooth extension chains
Yun Bao Huang
Mathematics , 2010,
Abstract: If $w=u\alpha$ for $\alpha\in \Sigma=\{1,2\}$ and $u\in \Sigma^*$, then $w$ is said to be a \textit{simple right extension}of $u$ and denoted by $u\prec w$. Let $k$ be a positive integer and $P^k(\epsilon)$ denote the set of all $C^\infty$-words of height $k$. Set $u_{1},\,u_{2},..., u_{m}\in P^{k}(\epsilon)$, if $u_{1}\prec u_{2}\prec ...\prec u_{m}$ and there is no element $v$ of $P^{k}(\epsilon)$ such that $v\prec u_{1}\text{or} u_{m}\prec v$, then $u_{1}\prec u_{2}\prec...\prec u_{m}$ is said to be a \textit{maximal right smooth extension (MRSE) chains}of height $k$. In this paper, we show that \textit{MRSE} chains of height $k$ constitutes a partition of smooth words of height $k$ and give the formula of the number of \textit{MRSE} chains of height $k$ for each positive integer $k$. Moreover, since there exist the minimal height $h_1$ and maximal height $h_2$ of smooth words of length $n$ for each positive integer $n$, we find that \textit{MRSE} chains of heights $h_1-1$ and $h_2+1$ are good candidates to be used to establish the lower and upper bounds of the number of smooth words of length $n$ respectively, which is simpler and more intuitionistic than the previous methods.
The subword complexity of smooth words on 2-letter alphabets
Yun Bao Huang
Mathematics , 2010,
Abstract: Let $\gamma_{a,b}(n)$ be the number of smooth words of length $n$ over the alphabet $\{a,b\}$ with $a
Smooth infinite words over $n$-letter alphabets having same remainder when divided by $n$
Yun Bao Huang
Computer Science , 2010,
Abstract: Brlek et al. (2008) studied smooth infinite words and established some results on letter frequency, recurrence, reversal and complementation for 2-letter alphabets having same parity. In this paper, we explore smooth infinite words over $n$-letter alphabet $\{a_1,a_2,...,a_n\}$, where $a_10 \text{ and }n$ is an even number, the generalized Kolakoski words are uniformly recurrent for the alphabet $\Sigma_n$ with the cyclic order; (4) the factor set of three times differentiable infinite words is not closed under any nonidentical permutation. Brlek et al.'s results are only the special cases of our corresponding results.
Fever of unknown origin as the first manifestation of Erdheim-Chester disease  [PDF]
Ning Li, Mingquan Chen, Huaping Sun, Yun Bao, Jiming Zhang
Case Reports in Clinical Medicine (CRCM) , 2013, DOI: 10.4236/crcm.2013.26095
Abstract: Erdheim-Chester disease (ECD) is an uncommon non-Langerhans cell histiocytosis that affects multiple body systems and can present clinically in a myriad of ways. We report the case of a 29-year-old man presented with fever and diffuse bone pain. Physical examination showed bilateral and symmetrical long bone pain, especially the knees. Radiographs showed multiple mixed bone lesions with sclerotic and lytic areas of the femora, tibiae, and fibula. Biopsy of the tibial area displayed foamy lipid-laden histiocytes, confirming the diagnosis of ECD.
Determination of the Triplet State Lifetime of C60 /Toluene Solution and C60 Thin Films by Pump-Probe Method  [PDF]
Cheng Bao Yao, Elisee Kponou, Yun Dong Zhang, Jin Fang Wang, Ping Yuan
Optics and Photonics Journal (OPJ) , 2011, DOI: 10.4236/opj.2011.12013
Abstract: Excited state lifetimes of C60/toluene solution and C60 films macromolecular were measured by pump-probe method. Relation between optical switching effect of material and pulse width of pumping field is briefly described. It is found that the faster switching speed of light is, the triplet state lifetime is shorter. A He-Ne laser, as a probe, passed through the sample in the pump-probe experiment. All-optical switching effect was realized. Changing the optical power of the pumping field, switching response of the sample and modulation depth were investigated. In certain experimental conditions, relation between transmission through the sample and response were measured by an oscilloscope. Triple state lifetime of the molecule is speculated. The result showed that C60/toluene solution and C60 film have a fast response time. They would be utilized in some applications, such as optical switches, photonic devices.
Kloosterman sheaves for reductive groups
Jochen Heinloth,Ngo Bao Chau,Zhiwei Yun
Mathematics , 2010,
Abstract: Deligne constructed a remarkable local system on $\bP^1-\{0,\infty\}$ attached to a family of Kloosterman sums. Katz calculated its monodromy and asked whether there are Kloosterman sheaves for general reductive groups and which automorphic forms should be attached to these local systems under the Langlands correspondence. Motivated by work of Gross and Frenkel-Gross we find an explicit family of such automorphic forms and even a simple family of automorphic sheaves in the framework of the geometric Langlands program. We use these automorphic sheaves to construct l-adic Kloosterman sheaves for any reductive group in a uniform way, and describe the local and global monodromy of these Kloosterman sheaves. In particular, they give motivic Galois representations with exceptional monodromy groups G_2,F_4,E_7 and E_8. This also gives an example of the geometric Langlands correspondence with wild ramifications for any reductive group.
Clustering-Based Linear Least Square Fitting Method for Generation of Parametric Images in Dynamic FDG PET Studies
Xinrui Huang,Yun Zhou,Shangliang Bao,Sung-Cheng Huang
International Journal of Biomedical Imaging , 2007, DOI: 10.1155/2007/65641
Abstract: Parametric images generated from dynamic positron emission tomography (PET) studies are useful for presenting functional/biological information in the 3-dimensional space, but usually suffer from their high sensitivity to image noise. To improve the quality of these images, we proposed in this study a modified linear least square (LLS) fitting method named cLLS that incorporates a clustering-based spatial constraint for generation of parametric images from dynamic PET data of high noise levels. In this method, the combination of K-means and hierarchical cluster analysis was used to classify dynamic PET data. Compared with conventional LLS, cLLS can achieve high statistical reliability in the generated parametric images without incurring a high computational burden. The effectiveness of the method was demonstrated both with computer simulation and with a human brain dynamic FDG PET study. The cLLS method is expected to be useful for generation of parametric images from dynamic FDG PET study.
Mechanism of Dinitrochlorobenzene-Induced Dermatitis in Mice: Role of Specific Antibodies in Pathogenesis
Elizabeth Yan Zhang,Aaron Yun Chen,Bao Ting Zhu
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0007703
Abstract: Dinitrochlorobenzene-induced contact hypersensitivity is widely considered as a cell-mediated rather than antibody-mediated immune response. At present, very little is known about the role of antigen-specific antibodies and B cells in the development of dinitrochlorobenzene-induced hypersensitivity reactions, and this is the subject of the present investigation.
Protein synthesis is essential not only for consolidation but also for maintenance and post-retrieval reconsolidation of acrobatic motor skill in rats
Ji-Yun Peng, Bao-Ming Li
Molecular Brain , 2009, DOI: 10.1186/1756-6606-2-12
Abstract: It is known that consolidation and post-retrieval reconsolidation of hippocampus- or amygdala-dependent memories requires new protein synthesis [1-5]. Previous studies suggest that acquisition or consolidation of motor skills also requires protein synthesis [6,7]. For example, local infusion of anisomycin, a widely-used protein synthesis inhibitor, into the motor cortex immediately after training severely impaired the ability of rats to learn a reaching task [6]. Pre-training intra-peritoneal administration of cycloheximide, a relatively new protein synthesis inhibitor, blocked the between-session improvement of performance on an acrobatic motor skill [7].Practice-induced improvement of motor skill occurs within and between training sessions [8-10], reflecting that there are two temporal phases for motor skill acquisition: one is fast and the other is slow [9]. As described above, acquisition or consolidation of motor skills requires new protein synthesis. However, it is unclear if maintenance and post-activation reconsolidation of motor skills also requires protein synthesis. To address this question, we investigated the effects of protein synthesis inhibition (PSI) on the consolidation, maintenance and reconsolidation of an acrobatic motor skill in rats running on a rotating rod. It has been reported that intra-ventricle infusion of anisomycin with a dose of 100 μg/μl produces > 90% PSI in the brain at 10 min post-infusion and this inhibition lasts about one hour, indicating a narrow time window for anisomycin to produce effect [1]. Thus, we selected the 100 μg/μl dose of anisomycin for intra-ventricle administration to evaluate the impacts of global PSI in the brain on the rotarod-running skill.We first investigated the impact of PSI on the consolidation of the rotarod-running skill. In this experiment, na?ve rats were trained one trial each day for 3 consecutive days. Anisomycin (100 μg in 1 μ1 ACSF) was infused into the left and right lateral ventricles at 0, 2
High expression of human clotting factor IX cDNA in myoblasts C2C12 cells and C3H mice
Hongwei Wang,Yun Bao,Daru Lu,Xinfang Qiu,Jinglun Xue
Science China Life Sciences , 1997, DOI: 10.1007/BF02881730
Abstract: Mouse myoblast C2C12 cell was used as target cell for gene transfer study of human clotting factor IX (hFIX) cDNA. In addition to the previously constructed retroviral vectors XLIX, LNCIX and G1NaCIX, G1NaMCIX with hFIX driven by muscle creatine kinase (MCK) enhancer and human cytomegalovirus (CMV) was constructed, based on the retroviral vector G1Na. These four retroviral vectors were used to transduce mouse my-oblasts C2C12. With ELISA assays, it has been found that the expression levels of human clotting factor IX detected in those transduced C2C12 cells are G1NaMCIX> G1NaCIX> LNCIX> XLIX. Mixed colonal cells transduced with GlNaMCIX expressed hFIX protein at the level of 640 ng/106 cell every 24 h. The modified C2C12 cells transduced with G1NaMCIX were implanted into skeletal muscle of the hindlegs of C3H mice; a stable expression of hFIX was detected and lasted for 35 d, with a maximum level of 206 ng/mL plasma. The regulation of hFIX cDNA expression in myoblasts was discussed and it was strongly suggested that a myoblast-mediated gene delivery system had the potential to be optimized as a safe and effective therapeutic modality for hemophilia B.
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