冻融异种神经匀浆结合硅胶管套接法修复周围神经缺损的实验研究

目的 探讨冻融异种神经匀浆结合硅胶管套接对周围神经再生的影响。方法 Wistar大鼠 2 4只 ,分成 2组 ,切断其右侧坐骨神经造成 10mm缺损。A组于硅胶管内注入冻融异种神经匀浆悬浮液 30 μl,B组于硅胶管内注入 30 μl生理盐水。于术后 16周分别进行大体、电生理、组织学观察和形态学分析。 结果 A组的再生神经运动传导速度快于B组 ,再生有髓神经纤维数亦高于B组 ,经统计学处理有显著性差异 (P<0 .0 5 )。结论 深低温冷冻处理是一种有效的降低异种神经抗原性的方法 ,冻融异种神经匀浆有明显促神经再生作用。

训诂与诠释的同异——兼论《教要序论》释词与近代中西方语言文化的融异

传统训诂与古代诠释学之同:训诂与诠释是近义词,传统训诂与古代诠释学学科定位相似,二者发展阶段相类。两门学科之异:训诂与诠释内涵有异,两门学科的内容、任务、方法有异。明清时期比利时耶稣会士南怀仁的《教要序论》是中西方语言文化融异的代表作,它所代表的圣经诠释学与传统训诂学在解释词意方面的融合之处有:1.二者均释行文中的重点词、疑难词。2.二者均释外来词。3.二者均释专有名词或词组。融异之处有:1.训诂常用义界,《教要序论》喜用定义。2.诠释不用"因形释义"之法。3.训诂"重意",诠释"重理"。结论:1.圣经诠释学与传统训诂学相融的一个客观原因是它们的基本任务都是解释经典,二者天然有着近似的使命。一个主观原因是传教士采用了利玛窦"合儒"策略。2.相异的客观原因:圣经诠释学属于外来文化、后来文化,语言载体是拉丁文等西文,这使它无法直接套用汉语汉字的"因形释义"等方法。主观原因是圣经诠释学选用定义法以使自己概念清晰、逻辑缜密,具有征信力,以说服中国人皈依其教。3.训诂学的内容很丰富,西方诠释学"就是",或者"相当于"中国训诂学的说法失之片面,不够科学。一点启示:当今中华文化的世界传播应该借鉴西来文化的传播经验。

交界性早搏室性早搏引起异-异室融

心室被二个起搏点发出的冲动同时激动所产生的QRS波称室性融合波(VF)。常见由窦性激动与室性异位激动所形成,早搏与早搏形成的异—异室融尚不多见。本文报道1例由交界性早搏与室性早搏形成的VF。

Molten salt construction of core-shell structured S-scheme CuInS_(2)@CoS_(2) heterojunction to boost charge transfer for efficient photocatalytic CO_(2) reduction

Weak redox ability and severe charge recombination pose significant obstacles to the advancement of CO_(2) photoreduction.To tackle this challenge and enhance the CO_(2) photoconversion efficiency,fabricating well-matched S-scheme heterostructure and establishing a robust built-in electric field emerge as pivotal strategies.In pursuit of this goal,a core-shell structured CuInS_(2)@CoS_(2)S-scheme heterojunction was meticulously engineered through a two-step molten salt method.This approach over the CuInS_(2)-based composites produced an internal electric field owing to the disparity be-tween the Fermi levels of CoS_(2) and CuInS_(2) at their interface.Consequently,the electric field facili-tated the directed migration of charges and the proficient separation of photoinduced carriers.The resulting CuInS_(2)@CoS_(2) heterostructure exhibited remarkable CO_(2) photoreduction performance,which was 21.7 and 26.5 times that of pure CuInS_(2) and CoS_(2),respectively.The S-scheme heterojunc-tion photogenerated charge transfer mechanism was validated through a series of rigorous anal-yses,including in situ irradiation X-ray photoelectron spectroscopy,work function calculations,and differential charge density examinations.Furthermore,in situ infrared spectroscopy and density functional theory calculations corroborated the fact that the CuInS_(2)@CoS_(2) heterojunction substan-tially lowered the formation energy of *COOH and *CO.This study demonstrates the application potential of S-scheme heterojunctions fabricated via the molten salt method in the realm of ad-dressing carbon-related environmental issues.

3D modeling of geological anomalies based on segmentation of multiattribute fusion

3D modeling of geological bodies based on 3D seismic data is used to define the shape and volume of the bodies, which then can be directly applied to reservoir prediction, reserve estimation, and exploration. However, multiattributes are not effectively used in 3D modeling. To solve this problem, we propose a novel method for building of 3D model of geological anomalies based on the segmentation of multiattribute fusion. First, we divide the seismic attributes into edge- and region-based seismic attributes. Then, the segmentation model incorporating the edge- and region-based models is constructed within the levelset- based framework. Finally, the marching cubes algorithm is adopted to extract the zero level set based on the segmentation results and build the 3D model of the geological anomaly. Combining the edge-and region-based attributes to build the segmentation model, we satisfy the independence requirement and avoid the problem of insufficient data of single seismic attribute in capturing the boundaries of geological anomalies. We apply the proposed method to seismic data from the Sichuan Basin in southwestern China and obtain 3D models of caves and channels. Compared with 3D models obtained based on single seismic attributes, the results are better agreement with reality.

Culture fusion and English language teaching

This paper is first to exemplify the problems caused by culture difference. After this, a survey is made on Chinese-western culture difference and its main aspects, followed by the Chinese and western culture difference on the layer of language. In the second part the discussion of the relationship between language and culture reveals the importance of culture education in language teaching. The author is of the opinion that one cannot really master a target language without adequate knowledge of the culture related to that language. The paper concludes with several suggestions about useful ways to get culture fusion in ELT and points out that human beings do not live in the objective world alone, nor alone in the world of social activity as ordinarily understood but are very much at the mercy of the particular language which has become the medium of expression for their society. It is quite an illusion that language is merely an incidental means of solving specific problems of communication or reflection.

Radiofrequency Ablation of Hepatic Paragonimiasis: a Case Report

HEPATIC paragonimiasis is a rare disease with non-specific manifestation, which is often misdiagnosed in clinical practice. Long-time drug therapy treating this disease would be accompanied by the possible development of side effects. Given the fact that this disease has seldom been reported in the literature,

Synthesis and Study of Heteronuclear Citrates

Terms of synthesis were determined for creation of new generation premixes and for their testing in experiments. Heteronuclear chelate citrates of general formula： M12MnL2.nH2O （where, M^I = Zn, Co, Fe, Mn, Cu; MH = Mn, Zn, Co, Cu; n = 0/4） were synthesized. Identity and composition of synthesized compounds were defined by microelemental analysis, determination of melting temperature and X-ray diffraction analysis. X-ray diffraction method was used also to define crystallinity of the compounds and their citric acid （H4L） component. X-ray amorphous and iso-structural orders were also revealed.

Triggered Asynchronous Cooperative Spectrum Sensing Scheme Based on Dempster-Shafer Theory

Aiming at solving the problems such as time consuming and application limiting presented in the existing synchronous cooperative spectrum sensing schemes,a triggered asynchronous scheme based on Dempster-Shafer(D-S) theory was proposed.Sensing asynchronously,each cognitive user calculated the confidence measure functions with double threshold spectrum sensing method.When the useful report was received by the fusion center,a fusion process would be triggered.Then the sensing results were fused together based on D-S theory.The analysis and simulation results show that the proposed scheme can improve the spectrum sensing efficiency and reduce the calculation amount of the fusion center compared with the existing schemes.

Heterogeneous sensors data fusion method based on peak picking in probability density space

The multi-sensor multi-target localization and data fusion problem is discussed, and a new data fusion method called joint probability density matrix （JPDM） has been proposed, which can associate with and fuse measurements from spatially distributed heterogeneous sensors to produce good estimates of the targets. Based on probabilistic grids representation, the uncertainty regions of all the measurements are numerically combined in a general framework. The NP-hard multi-sensor data fusion problem has been converted to a peak picking problem in the grids map. Unlike most of the existing data fusion methods, the JPDM method does not need association processing, and will not lead to combinatorial explosion. Its convergence to the CRB with a diminishing grid size has been proved. Simulation results are presented to illustrate the effectiveness of the proposed technique.

Synthesis of isosorbide-based polycarbonates via melt polycondensation catalyzed by quaternary ammonium ionic liquids

A series of quaternary ammonium ionic liquids(ILs)were synthesized and employed as catalysts for the production of poly(isosorbide carbonate)(PIC)from diphenyl carbonate and isosorbide via a melt polycondensation process.The relationship between the anions of the ILs and the catalytic activities was investigated,and the readily‐prepared IL tetraethylammonium imidazolate(TEAI)was found to exhibit the highest catalytic activity.After optimizing the reaction conditions,a PIC with a weight‐average molecular weight(Mw)of25600g/mol was obtained,in conjunction with an isosorbide conversion of92%.As a means of modifying the molecular flexibility and thermal properties of the PIC,poly(aliphatic diol‐co‐isosorbide carbonate)s(PAIC)s were successfully synthesized,again using TEAI,and polymers with Mw values ranging from29000to112000g/mol were obtained.13C NMR analyses determined that the PAIC specimens had random microstructures,while differential scanning calorimetry demonstrated that each of the PAICs were amorphous and had glass transition temperatures ranging from50to115°C.Thermogravimetric analyses found Td‐5%values ranging from316to332°C for these polymers.Based on these data,it is evident that the incorporation of linear or cyclohexane‐based diol repeating units changed the thermal properties of the PIC.

The Utilization of Exotic Options in the Formation of Structured Products

This paper deals with the issue of investment certificate formation in the financial market. Investment certificate is a type of structured products, the value of which is derived from the value of an underlying asset. The underlying asset is usually a share in a company, a basket of shares, or an entire index, etc.. It can be stated that for every estimated development of an asset （growth, fall, and stagnation） or for every attitude to risks （conservative or aggressive investors）, there is a suitable kind of certificate. The main objective is to perform an analysis of the structured product--Austria/Germany Bond 3 and its guarantee certificate construction using digital-barrier options. The authors have found an alternative opportunity to the purchase of this certificate, i.e., investment in a bank deposit, together with a purchase of cash or nothing down and four-knock-out call options and a sale of cash or nothing down and four-knock-out put options. The authors prove that the alternative investment has the same profit profile as the certificate. The authors made this analysis with the objective to contribute to the intellectualization of investors.

GARCH-Type modeling of stock market returns for the pre-crisis countries

Empirical studies have shown that a large number of financial asset returns exhibit fat tails （leptokurtosis） and are often characterized by volatility clustering and asymmetry. This paper considers the ability of the GARCH-Type （Generalized Autoregressive Conditional Heteroskedasticity） models to capture the stylized features of volatility in national stock market returns for three countries （Portugal, Spain and Greece）. The results of this paper suggest that in the presence of asymmetric responses to innovations in the market, the ARMA （1,1）-GJRGARCH（1,1） skewed Student-t model which accommodates both the skewness and the kurtosis of financial time series is preferred.

中华文明生命力传播力及其与世界其他文明的交流互鉴

中华文化在几千年历史进程中锤炼出“融同化异”的坚韧特性,它以道为统,以儒为基,以天人合一为根本理念,以大一统为政治文化主流,以爱国主义为核心价值,以求变革新为鲜明品格,以天下大同为崇高理想。中华文明不仅吸收外来文化的精华,滋补本民族文化血脉,还在与外来文化交流中,传递出独有的“智慧之光”。正是在与不同文明的交流互鉴、融合会通中,中华文明创造了延绵五千多年从未中断的辉煌奇迹,塑造了植根于中华民族血脉深处的文化基因,为人类文明事业做出不朽功绩,为我们在新时代坚定文化自信、历史自信,探索促进人类文明交流的内在驱动力,深化世界文明交流互鉴,构建人类命运共同体,提供了有益而丰厚的历史滋养。

Melting Heat in Radiative Flow of Carbon Nanotubes with Homogeneous-Heterogeneous Reactions

The present article provides mathematical modeling for melting heat and thermal radiation in stagnationpoint flow of carbon nanotubes towards a nonlinear stretchable surface of variable thickness. The process of homogeneousheterogeneous reactions is considered. Diffusion coefficients are considered equal for both reactant and autocatalyst.Water and gasoline oil are taken as base fluids. The conversion of partial differential system to ordinary differential system is done by suitable transformations. Optimal homotopy technique is employed for the solutions development of velocity, temperature, concentration, skin friction and local Nusselt number. Graphical results for various values of pertinent parameters are displayed and discussed. Our results indicate that the skin friction coefficient and local Nusselt number are enhanced for larger values of nanoparticles volume fraction.

Superheating and melting behaviors of Ag clusters with Ni coating studied by molecular dynamics and experiments

Using molecular dynamics with embedded-atom-type interatomicpotentials, we simulated the melting behavior of a spherical Ag3055 cluster coated with Ni. The semi-coherent Ag/Ni interface formed at low temperatures acts as an effective barrier against the surface melting and leads to a substantial superheating of the Ag cluster. The melting point was found to be about 100 K above the equilibrium melting point of the bulk Ag crystal (1230 K±15 K) and about 290 K above that (1040 K) of the free Ag3055 cluster. A superheating of 70 K was observed in the high-temperature differential scanning calorimetry measurement for Ag particles with a mean size of 30 nm embedded in Ni matrix prepared by means of melt-spinning. Melting is initiated locally at the defective interfacial area and then propagates inwards, suggesting a heterogeneously nucleated melting event at the Ag/Ni interface.