分别添加0%、5%、10%、15%、20%、25%的玄武岩粉体和短切纤维,研究添加后木质复合材料关键力学性能的变化.当粉体添加质量分数为15%时,复合板的拉伸强度达到峰值24.3 MPa,比未增强的复合板高了94.3%;而玄武岩短切纤维添加质量分数为10%时,复合板拉伸强度达到峰值18.9 MPa,比未增强复合板提高50.8%.当粉体添加质量分数和玄武岩短切纤维添加质量分数均为10%时,复合板的弯曲强度达到峰值各为41.8 MPa和39.2 MPa,比未增强的复合板各提高了43.3%和34.4%.结果表明,玄武岩粉体不仅仅价格远低于玄武岩短切纤维,其增强效果也远优于该纤维.

The key mechanical properties change of wood composites was introduced when basalt glass powder and chopped basalt fiber with the different content (0%, 5%, 10%, 15%, 20%, 25%) were added in wood composites. The tensile strength reached a maximum value of 24.3 MPa when the adding content of powder was 15%. Compared with the unreinforced wood composite panel group, the reinforced group increased tensile strength 94.3% . However, the tensile strength value was 18.9 MPa when the addition ratio of chopped basalt fiber was 10% . Compared with the unreinforced one, the reinforced group only improved tensile strength 50.8%. The maximum bending strength value of 41.8 MPa and 39.2 MPa were obtained when the content of the powder and chopped basalt fiber were all 10%. Compared with the unreinforced one, the reinforced group increased bending strength 43.3% and 34.4% respectively. The results showed that the price of basalt glass powder was far below than chopped basalt fiber, and the e

分别采用ω(蔗糖)=5%、10%和15%的溶液对唐菖蒲‘嫦娥粉’(Gladiolus hybridus‘Eerde’)切花于瓶插前预处理24 h,观察不同浓度蔗糖溶液对该切花瓶插期间花朵开放的促进效应.结果表明,与对照(去离子水)相比,各浓度蔗糖溶液预处理可不同程度地促进唐菖蒲切花上的花朵开放,尤其以ω(蔗糖)=10%和15%的溶液预处理的效果更为突出,二者均可显著提高唐菖蒲切花的小花日开放率和切花日观赏值,改善切花的水分吸收,并有利于维持切花的鲜样质量.

The roles of pretreatments with different concentration of sucrose solutions ( 5%, 10% and 15%) for 24 h on florets opening of cut gladiolus ( Gladiolus hybridus ‘Eerde ’ ) spikes were investiga-ted .The results showed that compared with control ( deionized water ) , pretreatments with various sucrose solutions had positive effects in enhancing florets opening of cut gladiolus spikes .Especially pretreatments with 10%and 15%sucrose solutions , both could significantly increase their daily relative blooming rate of florets and daily ornamental value , improveing water uptake , and maintaining their fresh mass .

以新鲜牛肉为原料，食盐、味精、白砂糖等为辅料，通过切条、腌制、裹粉、油炸等加工工艺，采用正交试验的方法，从食盐用量、味精用量、白砂糖用量、木瓜蛋白酶用量进行牛柳的配方筛选和加工工艺的研究，从色泽、口感、味道、组织状态4个方面来评价牛柳的感官品质，得出制作牛柳的最佳配方是食盐1.5%，白砂糖4%，木瓜蛋白酶0.007%，味精2%。

In this study,use raw materials of fresh beef,salt,monosodium glutamate(MSG),sugar as accessories,by the processing technology of cutting,preserved,wrapped powder,fried,withthe use of orthogonal test method,the beef formula and process is studied from the salt dosage,the amount of monosodium glutamate, sugar consumption and the amount of papain. From the color,texture,taste,organized in four areas to assess the state of the sensory quality of beef,the optimum formula of beef production is obtained as follows salt 1.5%,sugar 4%,papain 0.007%,MSG 2%.

目的研究4种组胺受体H，R、H：R、H，R和H。R在K粉相关性膀胱炎患者膀胱组织中的表达及肥大细胞浸润的临床意义。方法采用免疫组化S-P法检测10例K粉相关性膀胱炎患者膀胱组织（研究组）及10例膀胱全切患者远离膀胱肿物的正常膀胱组织（对照组）中组胺受体H．R、H：R、乩R和H。R的表达，检测2组4种不同组胺受体平均光密度（OD值），甲苯胺蓝特殊染色标记2组标本中肥大细胞并计数。结果与对照组比较，研究组H。R、H：R和H。R的表达明显上调，肥大细胞在膀胱组织间浸润增多（均P〈0．05），2组膀胱组织中H3R的表达差异无统计学意义。结论肥大细胞以及H。R、H：R和H。R与K粉相关性膀胱炎关系密切，并可能成为诊断该病的新指标和治疗的新靶点。

Objective To investigate the expression and clinical significance of four histamine receptors:H1R, H2R, H3R and H4R in urinary bladder of patients with ketamine-induced cystitis. Methods Immunohistochemical S-P method was used to detect the expression levels of histamine receptors:H1R, H2R, H3R and H4R in bladder tissues of 10 patients with ketamine-induced cystitis (experimental group) and distal tissue away from bladder tumors of 10 patients with cystectomy (control group). The average optical density (OD) values of four kinds of different histamine receptors were separately calcu-lated by Imagepro-plus 6.0 in two groups. At the same time, mast cells were marked by toluidine blue special dyeing and were counted. Results Comparing with control group, the expression levels of H1R, H2R, and H4R were significantly in-creased in experimental group (P<0.05). Mast cells diffused interstitial bladder infiltrates (P<0.05). There was no signifi-cant difference in the expression of H3R in two g

对碳化硅颗粒增强铝基复合材料进行等通道挤扭实验和模拟,研究粉体在变形过程中的致密行为。结果表明,SiCp/Al复合粉末材料在等通道转角挤扭工艺中通过3个剪切面和7个变形区能得到有效致密。ECAPT过程中材料所处的球应力和切应力的叠加状态,是材料孔隙得到有效致密的关键。变形过程中,SiC颗粒被剪切细化,促进了团簇颗粒的分散和孔隙的致密。TE通道的剪切作用能使SiC颗粒进一步细化,但材料的整体致密度略有下降。

ECAPT experiment and finite element simulation were carried out for the SiCp/Al metal matrix composite . The densi-fication behavior has been studied . The results show that the SiCp/Al metal matrix composite could be compact after three shear-ing surface and seven deformed zones . The analysis shows that the key factor to obtain high density is the composite of large shear plastic deformation and high hydrostatic stress during ECAPT . According the the shearing , the SiC particle was refined , which contributed to the scatter of the cluster and the densification of pore . The shearing of TE also can refine the SiC particle further , while the density of the composite decreases a little .