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Search Results: 1 - 10 of 39173 matches for " Bei Lin "
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Necessary conditions for the globalization of traditional Chinese medicine
Bei-bei Yu,Xiu-lin Gong
Zhong Xi Yi Jie He Xue Bao , 2011,
Abstract: : With the current trend of globalization, unprecedented opportunities and enormous changes have emerged for the global development of traditional Chinese medicine (TCM). However, many old and new challenges and problems still remain, including partial or limited comprehension of acupuncture, oriental medicine and TCM, the existence of non-standardized institutes of TCM and acupuncture training schools, unqualified TCM practitioners, and problems concerning Chinese herbal medicine and inexperience in conducting TCM business. These problems will doubtlessly impede the further development of TCM worldwide in the foreseeable future. It is also clear that the globalization of TCM will require a large scale systematic project and constitute an arduous historical task. This paper aims to consolidate 6 strategic development modes to reinforce and facilitate the process of TCM globalization through a detailed analysis of both the present status and existing problems concerning the development of TCM in the United States.
Verification of an Incremental Garbage Collector in Hoare-Style Logic

Chunxiao Lin,Yiyun Chen,and Bei Hua,

软件学报 , 2009,
Abstract:
C@Ag/TiO2: A Highly Efficient and Stable Photocatalyst Active under Visible Light  [PDF]
Bei Jin, Xiaosong Zhou, Xuyao Xu, Lin Ma, Zhijun Wu, Yingshan Huang
World Journal of Nano Science and Engineering (WJNSE) , 2013, DOI: 10.4236/wjnse.2013.31001
Abstract:
In this paper, preparation and characterization of C@Ag/TiO2 nanospheres compound photocatalysts was reported. C@Ag nanosphere was firstly synthesized via hydrothermal reaction, and followed by a sol-gel process to obtain the functionalized C@Ag/TiO2 nanosphere which has highly efficient visible light catalytic ability towards methyl orange (MO). The morphology of the obtained compound was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) technologies. From which we can see that the as-prepared samples show a spherical structure with a diameter of approximately 200 nm, and the silver particle in core was about 10 nm. The catalytic ability of the synthesized photocatalysts under visible light irradiation shows that C@Ag/TiO2 possesses higher photocatalytic activity towards MO degradation than that of N-P25 (TiO2). Furthermore, the C@Ag/TiO2 photocatalysts exhibited excellent reusability with almost no change after five runs. Finally, the possible photocatalytic mechanism of catalyst under visible light was discussion and proposed.
Investigation on the Association of Soil Microbial Populations with Ecological and Environmental Factors in the Pearl River Estuary  [PDF]
Yanchun Qiao, Donglin Xu, Hongjuan Yuan, Bei Wu, Bishao Chen, Yaowen Tan, Jianrong Lin, Dongliang Guo
Journal of Geoscience and Environment Protection (GEP) , 2018, DOI: 10.4236/gep.2018.63002
Abstract:
An investigation on the soil microbe populations from an agricultural inning area at the Pearl River estuary in Guangdong province, China was conducted via high through-put sequencing. The results revealed abundant diversity in the soil bacterial and fungal populations. In total, 197103 sequence tags were obtained from soil samples, most of which represented bacterial genera Actinomycetes, Bacillus and Marinobacter, while a majority of 118378 tags obtained were derived from fungal genera Clostridium, Devosia, Bradyrhizobium, Bdellovibrio, Phenylobacterium, Penicillium, and Emericella. Furthermore, nine physiological indexes (pH, available phosphorous, basic-group nitrogen, available potassium, catalase, sucrose, urease, phosphatase, and organic matters) were measured in three soil samples, and the association between these physiological indexes and microbe population composition was examined. The results revealed obvious inter-sample differences associated with ten dominating microbial groups: genera Clostridium, Devosia, Bradyrhizobium, Bdellovibrio, Phenylobacterium, and Penicillium were mainly impacted by pH (with a positive correlation), genera Sphingomonas and Acinetobacter mainly by available phosphorous (positive correlation), and genera Gemmatimonas and Pseudomonas by both pH and available phosphorous (negative correlation). Our study suggested that regulation of microbial species/populations might help improve soil environment to facilitate the growth of crops’ above-ground parts, and this provides practical information for inning agriculture.
Facile Synthesis and Photocatalytic Property of Titania/Carbon Composite Hollow Microspheres with Bimodal Mesoporous Shells
Guohong Wang,Bei Cheng,Jun Zhang,Lin Xu,Tingting Yin
International Journal of Photoenergy , 2012, DOI: 10.1155/2012/976389
Abstract: Titania/carbon composite hollow microspheres with bimodal mesoporous shells are one-pot fabricated by hydrothermal treatment of the acidic (NH4)2TiF6 aqueous solution in the presence of glucose at 180°C for 24 h and then calcined at 450°C. The as-prepared samples were characterized by XRD, SEM, TEM, HRTEM, UV-visible spectroscopy, and nitrogen adsorption-desorption isotherms. The photocatalytic activity of the as-prepared samples was evaluated by daylight-induced photocatalytic decolorization of methyl orange aqueous solution at ambient temperature. The effects of calcination time on the morphology, phase structure, crystallite size, specific surface area, pore structures, and photocatalytic activity of the microspheres were investigated. The results indicated that the as-obtained TiO2/C composite hollow spheres generally exhibit bimodal mesopore size distribution with their peak intra-aggregated mesopore size in the range of 2.3–4.5 nm and peak interaggregated mesopore size in the range of 5.7–12.7 nm, depending on specific calcination time. The daylight-induced photoactivity of as-obtained hollow TiO2/C microspheres generally exceeds that of Degussa P25. The influences of calcination time on the photoactivity are discussed in terms of carbon content, phase structures, and pore structures.
5,8-Dibromo-2,11-dithia[3,3](2,6)pyridinoparacyclophane
Si-Si Li,Bei Zhang,Hong-Lin Zhang
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810028850
Abstract: The title compound, C15H13Br2NS2 [systematic name: 12,15-dibromo-2,7-dithia-1(1,4)-benzena-5(2,6)-pyridinaoctaphane], contains a dibromo-substituted benzene ring and a pyridine ring that are linked by a pair of bridging —CH2SCH2— groups. There is a weak π–π interaction between the rings, the distance between the ring centroids being 3.572 (4) . The rings are not parallel, but form a dihedral angle of 18.29 (4)°.
Successful endoscopic sclerotherapy for bleeding gastric varices with combined cyanoacrylate and aethoxysklerol
Bei Shi, Wei Wu, Hui Zhu, Yun-Lin Wu
World Journal of Gastroenterology , 2008,
Abstract: Two patients with liver cirrhosis and portal hypertension related to hepatitis infection were admitted to Shanghai Ruijin Hospital due to recurrent melena and hematemesis. Isolated gastric varices were observed in the gastric fundus during the retroflexion of gastroscope. We carried out endoscopic sclerotherapy successfully for bleeding gastric varices with combined cyanoacrylate and aethoxysklerol, which disappeared dramatically several months after two courses of sclerotherapy for each patient. No complication and clinical signs of gastrointestinal re-bleeding were observed during the 6-mo endoscopic follow-up. CT portal angiography (CTPA) has been widely used in the assessment of variceal treatment and improves the results of endoscopic injection therapy.
Four-qubit pure states as fermionic states
Lin Chen,Dragomir Z. Djokovic,Markus Grassl,Bei Zeng
Physics , 2013, DOI: 10.1103/PhysRevA.88.052309
Abstract: The embedding of the $n$-qubit space into the $n$-fermion space with $2n$ modes is a widely used method in studying various aspects of these systems. This simple mapping raises a crucial question: does the embedding preserve the entanglement structure? It is known that the answer is affirmative for $n=2$ and $n=3$. That is, under either local unitary (LU) operations or with respect to stochastic local operations and classical communication (SLOCC), there is a one-to-one correspondence between the 2- (or 3)-qubit orbits and the 2- (or 3)-fermion orbits with 4 (or 6) modes. However these results do not generalize as the mapping from the $n$-qubit orbits to the $n$-fermion orbits with $2n$ modes is no longer surjective for $n>3$. Here we consider the case of $n=4$. We show that surprisingly, the orbit mapping from qubits to fermions remains injective under SLOCC, and a similar result holds under LU for generic orbits. As a byproduct, we obtain a complete answer to the problem of SLOCC equivalence of pure 4-qubit states.
Universal Subspaces for Local Unitary Groups of Fermionic Systems
Lin Chen,Jianxin Chen,Dragomir Z. Djokovic,Bei Zeng
Physics , 2013, DOI: 10.1007/s00220-014-2187-6
Abstract: Let $\mathcal{V}=\wedge^N V$ be the $N$-fermion Hilbert space with $M$-dimensional single particle space $V$ and $2N\le M$. We refer to the unitary group $G$ of $V$ as the local unitary (LU) group. We fix an orthonormal (o.n.) basis $\ket{v_1},...,\ket{v_M}$ of $V$. Then the Slater determinants $e_{i_1,...,i_N}:= \ket{v_{i_1}\we v_{i_2}\we...\we v_{i_N}}$ with $i_1<...3. If $M$ is even, the well known BCS states are not LU-equivalent to any single occupancy state. Our main result is that for N=3 and $M$ even there is a universal subspace $\cW\subseteq\cS$ spanned by $M(M-1)(M-5)/6$ states $e_{i_1,...,i_N}$. Moreover the number $M(M-1)(M-5)/6$ is minimal.
Canonical form of three-fermion pure-states with six single particle states
Lin Chen,Dragomir Z Djokovic,Markus Grassl,Bei Zeng
Mathematics , 2013, DOI: 10.1063/1.4892103
Abstract: We construct a canonical form for pure states in $\bwe^3(\bC^6)$, the three-fermion system with six single particle states, under local unitary (LU) transformations, i.e., the unitary group $\Un(6)$. We also construct a minimal set of generators of the algebra of polynomial $\Un(6)$-invariants on $\bwe^3(\bC^6)$. It turns out that this algebra is isomorphic to the algebra of polynomial LU-invariants of three-qubits which are additionally invariant under qubit permutations. As a consequence of this surprising fact, we deduce that there is a one-to-one correspondence between the $\Un(6)$-orbits of pure three-fermion states in $\bwe^3(\bC^6)$ and the LU orbits of pure three-qubit states when qubit permutations are allowed. As an important byproduct, we obtain a new canonical form for pure three-qubit states under LU transformations $\Un(2)\times\Un(2)\times\Un(2)$ (no qubit permutations allowed).
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