随流而动 北京银河SOHO

北京银河sOHO是扎哈·哈迪德在中国的第二个项目,也是第一个商业项目。文章介绍了设计过程中对各方面的具体考量,提出一种新的营造柔性城市景观的建筑策略,从而应对巨型建筑和街区尺度的城市环境。     

Study on a Voltage Estimation of Tap‐Changing Transformer in Consideration of SVC Introduction

Recent years, installation of photovoltaic (PV) system is active by the environmental problem and feed in tariff system. Due to PV's output fluctuation, the static var compensator (SVC) made by power electronics technology is planning to install in distribution system. The SVC is expected for maintain the voltage. But SVC differs in a theory of operation of the existing voltage controller load ratio control transformer (LRT) and step voltage regulator (SVR). Because the SVC operation makes the system impedance changes, the existing voltage controller may not operate effectively. In this study, the intelligent‐control method which used the radial basis function (RBF) network is proposed. This method can reduce the effects of the SVC operation by including the performance characteristics of SVC in the conventional method. An advantage of unnecessary arrangement attention of the SVC setup node and easy cooperation with the existing equipment is obtained by applying this method.     

一个实用电声脉冲法的空间电荷测量系统

空间电荷的测量对于电介质材料的研究有重要的意义。本文介绍了与日本学者联合制作的用于平板型试品的电声脉冲法即PEA法空间电荷测量系统。在介绍了系统的原理和硬件结构以及相应的重要参数之后,对于使用该套系统对高密度聚乙烯试品进行的一些试验结果进行了介绍和分析。结果表明,高密度聚乙烯的微观形态影响其空间电荷积聚特性,总的来说,结晶度越小,越有利于空间电荷的积累。试验证明,该套系统可以较好地完成空间电荷分布的测量。     

Electrical Conductivity of Polycrystalline Li2SiO3 and γ-LiAlO2

Conductivities of polycrystalline Li₂SiO₃ and γ-LiAlO₂ were measured by the two-terminal ac method at T =450° to 1000°C. Intrinsic and extrinsic regions were observed. The activation energies of conductivities in the extrinsic region for both samples agreed well with those of lithium diffusion obtained by T ₁ analysis of nuclear magnetic relaxation.     

Effect of Two-Step Heating on Gel Properties of a Paramyosin-Myosin System

The effect of two-step Heating, including low temperature setting, on the gel properties of the paramyosin-myosin system was investigated. At relatively low paramyosin contents, little effect of the two-step heating on gel properties was observed. When the paramyosin became 25 % or more, the indices of gel properties became significantly larger than those for the gels prepared by one-step heating. Paramyosin was more susceptible to the effect of two-step heating than myosin. It was thus concluded that paramyosin was mainly responsible for the effect of setting in invertebrate muscle gels.     

宫城县立儿童医院与东海大学医学部附属八王子医院

宫城县立儿童医院1.前述当人们进入日本东北地区核心城市仙台市西部广濑川的河岸台地,就会看到这个由红色砖墙、浓灰色金属屋顶以及民居尺度的阳台等要素构成的建筑物。对儿童来说,去医院就诊是非日常性事件,所以尽可能消除他们的不安情绪成为设计的一个主题,我们以儿童的视点组织导入空间的构成,使他们从篱笆外看到的是一个“不像医院的医院”。作为东北地区首次建设的小儿医疗专门医院,并被赋予宫城县的“综合性小儿医疗系统”的核心设施地位,宫城县立儿童医院采取公立民营(县投资建设,民间运营)的运作方式,于2003年11月建成开业。2.儿童…     

Study on Acceleration Factor at 5000 h Multiple Stress Test and Aging Evaluation of EVA Insulator

The authors carried out an outdoor exposure test and the 5000 h multiple stress test to ethylene vinyl acetate (EVA) polymer composite insulator used for 22 kV distribution line and an attempt was made to estimate the acceleration factor of the 5000‐h multiple stress test corresponding to the climate condition of the Kyushu area. By comparing dry band arc cumulative charge of leakage current at 5000‐h multiple stress test with that in the outdoor exposure test, the authors estimated the acceleration factor of the 5000‐h multiple stress test to be about 20 times. The acceleration factor was found to almost agree with the evaluation result of the absorption of hydroxyl group by FT‐IR analysis and the surface roughness of the insulator, respectively. Finally, for the electrical property, the expected life of EVA insulator that the authors developed was confirmed to be more than 40 years.     

EFFECT OF SLAUGHTER METHOD ON DEGRADATION OF INTRAMUSCULAR TYPE V COLLAGEN DURING SHORT-TERM CHILLED STORAGE OF CHUB MACKEREL SCOMBER JAPONICUS

The present paper demonstrates that a nonstntggling slaughter method can delay degradation of type V collagen in meat of chub mackerel Scomber japonicus and softening of the meat during postharvest chilled storage. The fish were slaughtered by piercing a knife into nape (nonstruggling method) or by leaving on ground (struggling method) and then stored in an ice box. Sensory study revealed that the postharvest softening of the meat was moderated at 4 and 8 h by the non‐struggling slaughter method in comparison with the struggling method. On the basis of the specific solubilization of type V collagen and reduced tyrosine content in it, a cleavage of the nonhelical regions (telopeptides) of the type V collagen occurred during the chilled storage in the fish slaughtered by the struggling method. The degradation of type V collagen was also slower in the meat of the fish slaughtered by the nonstruggling method, which can be directly linked to the moderation of the postharvest softening.