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Search Results: 1 - 10 of 81647 matches for " YAN Hong-bo "
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Effect of apigenin on the reproductive system in male mice  [PDF]
Hui Li, Hong-Bo Li, Ming Zhang, Fang Yan, Zhong-Xian Zhang, Zhi-Lan Li
Health (Health) , 2010, DOI: 10.4236/health.2010.25065
Abstract: This study aimed to characterize the effect of apigenin on the reproductive system in male mice. Adult male mice were treated with intraperitoneal injection of apigenin at the dose levels of 5, 10, 15, 20 and 25 mg/kg.bw, 0.05% DMSO and 0.9% normal saline daily for seven days. Then, testis and epididymis sperms in sperm motility, sperm morphology, the percentages of ploidy cells and seminiferous epithelium cells at the cell-circle phase, and the ratio of ploidy cells were evaluated. The results showed that sperm density significantly reduced in the 25 mg/kg group compared with the solvent control group. The abnormal sperms were mainly amorphous; non-hook sperms took the second largest group; and banana, double-tail and folded-tail sperms were rare. Abnormal sperms were mainly in the head sperm. Moreover, after intraperitoneal injection of 5 mg/kg apigenin, the percentage of 1C population increased, and the percentage of 4C declined, leading to a significant increase of the 1C:4C ratio, compared with the solvent and negative control groups. The percentage of seminiferous epithelium cells at the cell-circle phase of G0/G1 exhibited a significant increase in the 25 mg/kg group compared with the control groups. Taken together, that apigenin has adverse effects on the reproductive system in adult male mice is demonstrated.
Effect of intra-abdominal fat accumulation on autonomic nervous function in patients with hypertension
Hong XIAO,Yin-xing NI,Zhen-cheng YAN,Hong-bo HE
Medical Journal of Chinese People's Liberation Army , 2012,
Abstract: Objective  To explore the relationship between intra-abdominal fat accumulation and heart rate variability. Methods  A total of 353 patients with hypertension were enrolled in this study, among them there were 197 males and 156 females, aged from 27 to 85 years old with a mean of 55±13 years. All the patients received abdominal fat ultrasonography, 24-hour ambulatory ECG and blood biochemical tests, and they were divided into intra-abdominal fat accumulation group and normal intra-abdominal fat group according to the fat thickness measured by B-mode ultrasound value (male ≥38.5mm, female ≥34.7mm). They were redivided into four subgroups based on interquartile range of the fat thickness for comparing the difference in heart rate variability between 4 groups. Results  Each subject had a 24-hour ECG recording taken and the standard HRV time-domain indices: SDNN (standard deviation of the normal-to-normal RR intervals), reflecting total nervous tension, SDANN (standard deviation of the averages of RR intervals in all 5-minute segments), reflecting sympathetic tone, and RMSSD (the root mean square successive differences) and SDNN index (mean of the standard deviations of RR intervals in all 5-minute segments), reflecting vagal nerve tone were determined. Results showed all the aforesaid indices were lower in the intra-abdominal fat group than in the normal intra-abdominal fat group (P < 0.05). Hierarchical analysis by interquartile revealed that PNN50 (the percentage of successive RR intervals that differed by more than 50ms), SDNN, SDANN, RMSSD and SDNN index were significantly lower in abdominal fat thickness > 38.0mm group than in < 15.5mm group (P < 0.05); PNN50, SDNNN, SDANN and RMSSD were significantly lower in the > 38.0mm group than in 15.6-27.0mm group; SDNN and SDNN index were significantly lower in the 27.1-38.0mm group than in < 15.5mm group; SDNN was significantly lower in the 27.1-38.0mm group than in 15.6-27.0mm group. Linear regression analysis indicated intra-abdominal fat thickness, fasting blood glucose and sex were the main risk factors of the SDNN; abdominal fat thickness and sex were main factors influencing SDANN, and abdominal fat thickness, fasting blood glucose and diastolic blood pressure were main influencial factors of SDNN index. Conclusion  Intra-abdominal fat accumulation may significantly reduce the heart rate variability in hypertension patients.
Preparation of Porous Carbon by Polymer Blending of Phenolic Resin and Adipic Diacid
XIA Xiao-Hong, LIU Hong-Bo, HUANG Yan-Rui, YANG Li, SHI Lei
无机材料学报 , 2011, DOI: 10.3724/sp.j.1077.2011.00857
Abstract: Porous carbons used for electric double layer capacitors (EDLCs) were prepared by chemical blending of phenolic resin (PF) and adipic diacid (DA). Chemical reaction of PF with diacid is manifested by a shift of carbonyl stretching peak of diacid to a higher frequency in FT―IR spectra and a higher decomposition temperature of diacid in TG curves. The influences of the ratio of w(DA) to w(PF) on pore structure, adsorption behavior and capacity performance were investigated. The specific surface area and total pore volume increase with the ratio of w(DA) to w(PF) at first and then decrease, reach the maximum at the value of w(PF)/w(DA), which are 550 cm2/g and 0.27 cm3/g, respectively. When the porous carbon used for the electrodes of electrochemical double layer capacitor (EDLC), a satisfied speci―c capacitances of 145 F/g in 30 wt% KOH aqueous electrolytes is acquired and the capacitance maintenance achieve 70% while the current density enlarged 50 times.
An emergy analysis on the ecotourism system of Wuyishan Natural Reserve

LI Hong-Bo,LI Yan-Yan,

生态学报 , 2009,
Abstract: Emergy theory and analysis method have been applied in the ecological science and other relative fields. In this paper, Wuyishan national natural reserve in Fujiang province of China is taken as a system, emergy analysis has been used to study its ecotourism situation. The entire value of an ecotourism system can not be completely presented by the traditional method of emergy analysis, therefore, CVM is introduced in order to compensate this, so that a complete value of the system can be presented. In this way, some of new concepts of emergy are proposed such as ideal exchange emergy ratio. The results of this study have been compared with other similar study. This study indicates that: (1) the emergy density of the ecotourism system of Wuyishan natural reserve is 7.31×10~(11) sej/m~2, lower than the average of that of Fujian Province(16.62×10~(11) sej/m~2), meanwhile the emergy of per person is 2.80×10~(16) sej, higher than that of Fujian Province(5.75×10~(15) sej); the net output of emergy is 3.60,a bit higher than that of the tourist economic system of Yueshi ecological agricultural system in Gongcheng, Guangxi Province(2.79);the ideal exchange ratio of emergy of the ecotourism system of Wuyishan natural reserve is 0.70. (2) The physical environment of Wuyishan national natural reserve has great potential for development; the economy of local community is in the state of underdevelopment, and people′s income is low; the efficiency of productivity of the system is also at low level, with an unbalanced trade with outside; finally, the ecotourism development is just in the state of initiative stage.
A new method to recognize determinism in time series

Wu Yan-Dong,Xie Hong-Bo,

物理学报 , 2007,
Abstract: Compared with singular value decomposition, symplectic geometry spectrum is a measure preserving and nonlinear transform. So, it is more suitable for nonlinear dynamics system analysis. A new method to detect determinism in time series based on symplectic geometry spectrum (SGS) is proposed in the present work. Chaos and stochastic process could be recognized by applying the non_parameter Mann_Whitney on the SGS of original data and its surrogate data. The method is first tested on stochastic processes, the Lorenz, Rossler, Mackey_Glass and high dimensional coupling equations. Then it is applied to two data sets of Santa Fe to test its effect on experimental data. Finally, the robust ness of the method is tested on the time series with different data length and different levels of additive noise.
Secure(t,n) Threshold Proxy Signature Scheme Without a Trusted Party

YAN De-qin,ZHAO Hong-bo,

计算机科学 , 2009,
Abstract: A secure threshold proxy signature scheme was proposed.Conspiracy attack,that is,any t(t is threshold value) or more malicious proxy signatures may work together to reconstruct the secret polynomial of the proxy group and derive the secret keys of other members in the proxy group,consequently they can impersonate some other proxy signers to generate a valid threshold proxy signature.A large number of the schemes which were proposed require trusted party.So the trusted party becomes the attacked part.The pro...
Bis(ethanamidinium) (1,10-phenanthroline-2,9-dicarboxylato)manganate(II) heptahydrate
Yan-Li Miao,Hong-Bo Wang,Wen-Dong Song
Acta Crystallographica Section E , 2013, DOI: 10.1107/s1600536812048350
Abstract: In the title complex, (C2H7N2)2[Mn(C14H6N2O4)2]·7H2O, the MnII atom is coordinated by four N atoms and four O atoms from two 1,10-phenanthroline-2,9-dicarboxylate ligands in a distorted dodecahedral geometry. The double negative charge is balanced by two ethanamidinium cations. A three-dimensional supramolecular structure is formed through N—H...O and O—H...O hydrogen bonds and π–π stacking interactions [centroid–centroid distance = 3.553 (2) ].
Bis{2-[2-(isopropylammonio)ethyliminomethyl]-6-methoxyphenolato}nickel(II) dithiocyanate
Hong-Bo Ma,Yan-Xia Jiang,Jun-Tao Lei
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808008052
Abstract: The title complex, [Ni(C13H20N2O2)2](NCS)2, consists of a centrosymmetric mononuclear four-coordinate nickel(II) complex cation and two thiocyanate anions. The Ni atom is located on an inversion center and is coordinated by two phenol O atoms and two imine N atoms from two equivalent Schiff base ligands, in a square-planar geometry. In the crystal structure, the amino H atoms are involved in N—H...O hydrogen bonds with the phenol and methoxy O atoms of the ligand, and in N—H...N hydrogen bonds with the N atoms of the thiocyanate anions, which sit above and below the Ni atom.
Wajsberg's form of MTL algebras with applications

寇海燕, 吴洪博
KOU Hai-yan
, WU Hong-bo

- , 2015, DOI: 10.6040/j.issn.1671-9352.0.2014.342
Abstract: 摘要: MTL代数是一种重要的基础逻辑代数.本文采用Wajsberg方法,根据逻辑系统MTL中公理的形式,建立了NMTL代数的经典代数表示形式,进而证明了NMTL代数与MTL代数是同一代数结构,证明了满足条件 ?x,y∈L, x→y=(y→0)→(x→0)的NMTL代数L是BR0代数.在此基础上证明了IMTL代数和BR0代数是同一代数结构,并给出BR0代数和BL代数的Wajsberg形式.
Abstract: MTL algebra is an important basic logic algebra. Firstly, the classical algebras forms of NMTL algebra is given by taking Wajsberg's method and some parts of axioms of MTL logic system, and it is proved that NMTL algebra and MTL algebra have identical structure. Secondly, it is proved that an NMTL algebras L satisfying the condition: ?x,y∈L, x→y=(y→0)→(x→0) is BR0 algebra. Finally, it is proved that IMTL algebra and BR0 algebra have identical structure and the Wajsberg forms of BR0 algebra and BL algebra are given
Connotations and extensions of comparative effectiveness research and feasibility analysis for clinical evaluation in traditional Chinese medicine
Hong-bo Cao
Zhong Xi Yi Jie He Xue Bao , 2012,
Abstract: Comparative effectiveness research (CER) is well developed in international medical research. This article analyzes the basic connotations of CER from five aspects, including selection of objective, positioning of target population, comparison of intervention scheme, identification of contrast condition and analysis of therapeutic effects. The inclusiveness and advanced nature of CER were revealed by comparing with modern medical research methods, such as evidence-based medicine, patient-important outcome and randomized controlled trials. Based on the superiority of CER, the feasibility of applying CER in clinical evaluation of traditional Chinese medicine is explored. CER should be combined with the holistic concept, syndrome differentiation and individuality-concerned treatment so as to facilitate its development in research of traditional Chinese medicine in China.
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