Experimental Study on Seismic Behaviors of Transfer Floor from Inclined Column to Framed Short -leg Shear Wall

According to the pseudo static tests on two specimens of Transfer floor from inclined column to framed short-leg shear wall,which are subjected to the vertical loads and the horizontal cyclic loads,in this paper the stress distributions,final failure model of the specimens,paths of the load transfer and the mechanical behaviors of the transfer beam are studied in detail,the ductility and energy dissipation of the specimens are also specially studied.The results show that this kind of transfer structure can have good seismic behaviors.     

Experimental Research of Vertically-Loaded RC Joint of Local Transfer from Inclined Column with Different Angle to Beeline-Shaped Short Shear Wall

According to test results of two different angle specimens of local transfer RC joint from inclined column to Beeline-shaped short shear wall under vertical static loads and results of corresponding finite element analysis(ANSYS), fundamental behaviors of the joint are achieved for the change of the angle.The result indicates that there is much difference in the stress distributions of the transfer beam and short shear wall for different angles of inclined column, which shows that the larger angle, the more great tensile force and the earlier crack in the transfer beam and the lower capacity. Otherwise, the angle is smaller, the evener stress distributions in short shear wall, the later crack, the worse degenerate in the transfer beam and the higher capacity.Furthermore, the mechanical behaviors of the joint obviously followed the characteristics of a truss model.     

Experimental Investigation of "Column with Weaker Beam" Frame and "Column with Equally Strong Beam" Frame

By the way of experiment and analysis of two "one story and one bay" reinforced concrete frames, namely a "beam with weaker column" frame and a "column with equally strong beam" frame, the features of internal force redistribution are investigated and an elementary comparison about bending moment redistribution of three kinds of frames namely the "column with weaker beam", "beam with weaker column" and "column with equally strong beam" is given. Through this comparison, the objective existence of such "three kinds of frame" is proven, the moment redistribution is different for each frame and for the moment modulation, the elastic moment diagram and the difference of the internal force redistribution in different frames should be considered together.     

红叶石楠提取类胡萝卜素的工艺条件研究

在单因素试验基础上,采用正交试验优化红叶石楠绿叶中类胡萝卜素的提取工艺条件,并用柱层析分离纯化粗提液中的类胡萝卜素。结果表明,在40℃下以丙酮∶乙醇=1∶1为提取剂,料液比1∶10,浸提时间1.5 h,类胡萝卜素含量可达51.26μg/g。该类胡萝卜素粗提液经过柱层析法初步分离纯化,纯化倍数可达1.41。     

Experimental Analysis on Seismic Behaviors of Inclined Column-shaped and Beam-shaped Transfer Floor

In order to analyse seismic behaviors of inclined column-shaped and beam-shaped transfer floor,the pseudo static testing is carried out,which are subjected to vertical loads and horizontal cyclic loads,respectively on two specimens,including the framed short-leg shear wall inclined column-shaped transfer plane framework and the same dimension beam-shaped transfer frame.The load transfer is direct,inclined column transfer structure can reduce the beam dimension effectively,and it is easier to implement the aseismatic design principles,including "strong column and weak beam,strong shearing and weak bend,stronger nodes".Lateral rigidity of inclined column-shaped transfer stories is large,making it difficult to engender structure weakness stories.If the design is reasonable,inclined column-shaped transfer structure can get better seismic behavior.     

麦麸中阿魏酸提取纯化工艺的研究进展

阿魏酸是麦麸中重要的酚酸之一,具有多种生理功能,因此在食品添加剂和功能性食品开发上具有广泛的应用前景。综述了近年来国内外有关小麦麸皮中阿魏酸提取纯化工艺的研究进展,以期推动我国小麦副产物深加工工艺的研究。     

The Experimental Study on Size Effects on Axial Compression Performances of Reinforced Concrete Column under Repeated Load

The size effects on axial compression performances of reinforced concrete column under repeated load are needed. Specimens were designed and tested in accordance with the relevant similarity, whose geometric dimensions are: 400 mm×400 mm×1 200 mm, 600 mm×600 mm×1 800 mm and 800 mm×800 mm×2 400 mm. The result of the experiment, the failure characteristics, crack development process, strength, peak stress, peak strain and stiffness of various specimens were comparatively analyzed. The results show that, within size range of this test, size effect exists on performances of columns.     

Experimental Analysis of Size Effect of High-strength Concrete Column Under Small Eccentric Loading

To analyse size effect of high-strength concrete column under small eccentric loading, experimental analysis was carried out on 3 categories of different sizes of high-strength concrete columns under small eccentric loading. The columns' section size was 200 mm × 200 mm, 400 mm × 400 mm and 800 mm × 800 mm, respectively. Failure mode, ultimate strength, deformation capacity and cross-sectional strain distributing rules were compared to get the size effect law. The results show that the compressive failure mode and cross-sectional strain distributing rules of HSC column under small eccentric loading are basically the same, and the size effect isn't obvious. Ultimate strength and deformation capacity of HSC column under small eccentric loading have size effect obviously. With increase of section size, safety reservation of ultimate strength is reduced and deformation capacity also reduces.     

中性氧化铝柱净化—高效液相色谱法测定菠菜中的代森锰锌丙森锌和福美双

建立了菠菜中代森锰锌、丙森锌和福美双残留量的高效液相色谱分析方法。原理是使用碘甲烷甲基化后过中性氧化铝柱净化,使用高效液相色谱二极管阵列检测器进行测定。3种农药的定量下限均为0.05 mg/kg,线性范围0～2.0 mg/kg。添加水平25μg/kg时回收率为82%～107%,RSD小于5%。该方法选择性好、操作简单、重现性和准确度高。     

胸腺肽制备与纯化方法的研究

分析了近年来对胸腺肽提取纯化技术的科研成果,阐述了胸腺肽提取纯化技术的研究进展,以期为提高胸腺肽制备水平提供参考。     

弯囊苔草(Carex dispalata)对生活污水的净化效果

通过水培实验,研究了弯囊苔草在不同浓度生活污水中的生长特性及对生活污水TN、NH3-N、TP、CODCr的去除效果。结果表明,弯囊苔草在中浓度污水中生长最好,其生物量显著高于低浓度（p <0.05）,略高于高浓度（p >0.05）。弯囊苔草对3种浓度生活污水中TN、NH3-N、TP、CODCr的净化效果均显著高于对照（p <0.05）。在低、中、高3种生活污水中,对TN的去除率分别为87.04％、88.84％和68.87％;对NH3-N的去除率分别为96.70％、98.81％和96.68％;对TP的去除率分别为94.48％、96.98％和96.75％;对CODCr的去除率分别为63.20％、83.80％和82.33％。弯囊苔草对高、中浓度污水中NH3-N、TP、CODCr的净化效率显著高于低浓度（p<0.05）,其中对NH3-N和TP的去除率均超过95%;对中、低浓度生活污水中TN的去除率显著高于高浓度（p <0.05）。除生活污水中的NH3-N外,TN、TP、CODCr的去除速率在实验初期较快。实验表明弯囊苔草对生活污水具有较好的净化能力,可以作为水体生态修复工程中的修复植物。     

大豆低聚糖分离纯化研究

大豆低聚糖能促进人体肠道内固有的有益细菌——双歧杆菌的增殖,从而抑制肠内腐败菌的生长,并减少有毒发酵产物的形成。是一类功能性低聚糖。综合论述了国内外工业上分离纯化大豆低聚糖的典型工艺过程,并对各单元操作中所用方法进行了比较和分析。     

Purification and characterization of the extracellular algae-lysing components from an algae-lysing bacteria

Purification, characterization and initial identification of extracellular algae-lysing constituents of fermentation products of the algicidal bacteria S7 are carried out by ultraviolet spectrum, infrared spectrum, fluorescence spectra and mass spectrum, and the results show that the eluates of methanol have the best algicidal effects. These active algicidal substances made of conjugation unsatuated bonds, hydroxyl, saturated alkyl and aromatic ethers. In the three-dimensional fluorescence spectroscopy, two strong fluorescence peaks appear at 264/436 nm and 378/369 nm respectively. Mass spectrum indicates that the active substances consist of six monomers, and their molecular weights are 163.1, 246.3, 274.3, 318.3, 404.5 and 475.4, respectively.     

灯盏细辛多酚纯化工艺的响应面法优化及其抑菌活性研究

利用单因素与响应面试验确定大孔树脂纯化灯盏细辛多酚提取物的工艺.通过静态吸附-洗脱试验,比较6种不同类型大孔树脂对目标化合物的吸附、解吸性能后,利用动态吸附-洗脱试验确定最佳纯化工艺,同时采用滤纸片法考察纯化后的多酚化合物对大肠杆菌、枯草杆菌和金黄色葡萄球菌的抑菌活性.结果表明,H103型树脂对灯盏细辛多酚提取物的纯化工艺条件为:上样液质量浓度为1.9 mg/mL,pH为5.1,上样液体积为80 mL,上样流速为2 mL/min,洗脱剂乙醇体积分数为69％,体积为120 mL,洗脱流速为1 mL/min,产物的多酚纯度由11.25％提高至54.76％.纯化后的灯盏细辛多酚对3种受试菌具有不同程度的抑制活性,其中对金黄色葡萄球菌的抑制活性最强,因此可为灯盏细辛多酚的后续开发利用提供参考.     

响应面法优化桑葚多糖纯化工艺及不同产物的抗运动疲劳活性比较

为研究大孔树脂纯化桑葚粗多糖的最佳工艺,考察纯化前后桑葚多糖对运动疲劳的影响。通过静态吸附-解吸试验筛选适宜树脂后,采用单因素与响应面试验确定最佳纯化工艺,并利用动物试验比较纯化前后桑葚多糖的抗运动疲劳活性。结果表明,大孔树脂纯化桑葚粗多糖的最佳工艺为：将60 mL浓度为14.5 mg/mL的粗多糖溶液以1.0 mL/min流速上样至H103树脂后,采用130 mL纯水以1.3 mL/min流速洗脱,最终产物的脱色率为78.2%±1.4%,蛋白质脱除率为67.3%±2.2%,多糖保留率为81.5%±1.2%。与粗多糖相比,纯化后的桑葚多糖可极显著延长小鼠的力竭游泳时间（P＜0.01）,增强其乳酸脱氢酶活力（P＜0.01）,并显著降低运动生成的乳酸浓度水平（P＜0.05）,因此具有较好的抗运动疲劳活性。     

免疫亲和柱净化高效液相色谱法测定坚果中黄曲霉毒素

建立了免疫亲和柱净化高效液相色谱法测定坚果中黄曲霉毒素B1,B2,G1和G2总量。样品用甲醇—水提取,经免疫亲和色谱柱纯化,应用液相色谱法检测。试验结果表明:空白样品分别按照5.2,26,52μg/kg添加黄曲霉毒素,回收率为81.3%～96.0%,精密度<10%,黄曲霉毒素B1,B2,G1和G2的检测灵敏度分别为0.10,0.05,0.10,0.15μg/kg。免疫亲和柱净化高效液相色谱法测定坚果中黄曲霉毒素B1,B2,G1,G2总量,是一种简单、快速和准确的方法。     

AB-8大孔吸附树脂分离纯化香鳞毛蕨总黄酮的研究

为提高香鳞毛蕨提取液中黄酮类化合物的纯度,利用AB-8大孔吸附树脂对香鳞毛蕨总黄酮的纯化条件进行系统的研究。以总黄酮吸附率、洗脱率以及总黄酮纯度为考察指标,考查AB-8树脂对香鳞毛蕨总黄酮的吸附能力。确定最佳上样条件为：香鳞毛蕨上样液中总黄酮的浓度为1.5 mg/mL,上样流速为1.5 mL/min。最合适的洗脱条件为：70%的乙醇,流速为1.0 mL/min(2 BV/h)。AB-8大孔吸附树脂对香鳞毛蕨黄酮有较好的吸附和解吸性能,纯化后香鳞毛蕨总黄酮纯度为38.4%。     

洋葱愈伤原生质体分离和纯化研究

建立高效原生质体分离和植株再生体系是进行体细胞杂交的基础性工作。以洋葱多次继代的愈伤组织为研究试材,对原生质体分离纯化技术进行研究。结果表明：2.0%纤维素酶Onozuka R-10+0.1%果胶酶Y-23+0.5%离析酶 R-10+0.60 mol/L甘露醇+CPW+0.1% MES的酶液,酶解6 h,洋葱原生质体分离效果最好。纯化时,适当降低离心力的短时间离心有利于原生质体纯化过程中产量和活力的保持,以600 r/min离心5 min效果为好。