A CORBA-Based Multidatabase System——Panorama Project

0　ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｎｅｅｄｆｏｒｉｎｔｅｇｒａｔｉｏｎｏｆｄｉｆｆｅｒｅｎｔｄａｔａｂａｓｅｍａｎａｇｅｍｅｎｔｓｙｓｔｅｍｓ (ＤＢＭＳｓ) ,ｍａｋｉｎｇｄｉｆｆｅｒｅｎｃｅｓｂｅｔｗｅｅｎｔｈｅｓｅｓｙｓｔｅｍｓｉｎｖｉｓｉｂｌｅａｎｄｐｒｏｖｉｄｉｎｇｕｓｅｒｓｗｉｔｈａｕｎｉｆｏｒｍａｃｃｅｓｓｔｏａｌｌｔｈｅｄａｔａｂａｓｅｓｈａｓｇｒｏｗｎｒａｐｉｄｌｙｄｕｒｉｎｇｔｈｅｌａｓｔｄｅｃａｄｅ .Ｈｏｗｅｖｅｒ,ｄａｔａｂａｓｅａｕｔｏｎｏｍｙａｎｄｈｅｔｅｒｏｇｅｎｅｉｔｙ…     

The Existence of Positive Bounded Entire Solutions of Second Order Quasilinear Elliptic Equations

Ｉｎｔｈｉｓｐａｐｅｒｗｅａｒｅｃｏｎｃｅｒｎｅｄｗｉｔｈｔｈｅｅｘｉｓｔｅｎｃｅｏｆｐｏｓｉｔｉｖｅｅｎｔｉｒｅｓｏｌｕｔｉｏｎｓｏｆｓｅｃｏｎｄｏｒｄｅｒｑｕａｓｉｌｉｎｅａｒｅｌｌｉｐｔｉｃｅ ｑｕａｔｉｏｎｓｏｆｔｈｅｔｙｐｅｄｉｖ(｜Ｄｕ｜ｐ- 2 Ｄｕ) +ｆ(ｘ ,ｕ) =0 ,ｘ∈ＲＮ,(1 )ｗｈｅｒｅｆ(ｘ,ｕ)ｉｓａｃｏｎｔｉｎｕｏｕｓｆｕｎｃｔｉｏｎｏｎＲＮ× (0 ,∞ ) .Ｔｈｉｓｐｒｏｂｌｅｍａｐｐｅａｒｓｉｎｔｈｅｓｔｕｄｙｏｆｎｏｎ -Ｎｅｗｔｏｎｉａｎｆｌｕｉｄｓａｎｄｎｏｎ -Ｎｅｗｔｏｎｉａ…     

JOURNAL OF YUZHOU UNIVERSITY(Natural Sciences Edition)Main Contents of Vol.18(2001)

(ＮｏｓｏｆｔｈｅＪｏｕｒｎａｌｓａｎｄｐａｇｅｓａｒｅｉｎｐｒｏｐｅｒｏｒｄｅｒｂｅｔｗｅｅｎｐａｒｅｎｔｈｅｓｅｓ)ＴｈｅＱｕａｓｉ＿ｏｒｔｈｏｇｏｎａｌＴｒａｎｓｆｏｒｍａｔｉｏｎａｎｄＱｕａｓｉ＿ｃｏｎｖｏｌｕｔｉｏｎＴｒａｎｓｆｏｒｍａｔｉｏｎＹＵＡＮＨｕｉ＿ｐｉｎｇ(1,5 )……………………ＥｑｕｉｖａｌｅｎｔＤｅｆｉｎｉｔｉｏｎｓｏｆＡｂｓｔｒａｃｔＬｅｂｅｓｇｕｅＩｎｔｅｇｖａｌＹＡＮＧＤｅ＿ｍｅｉ(1,7)……………………………………………ＩｓｈｉｋａｗａＩｔｅｒａｔｉｖｅＰｒｏｃｅｓｓ…     

等离子体淀积氢化纳米锗的阳极氢覆盖率的影响

ＢｙａｐｐｌｙｉｎｇａｈｉｇｈｄｅｇｒｅｅｏｆＨ2 -ｄｉｌｕｔｉｏｎ ,ｎａｎｏｃｒｙｓｔａｌｌｉｎｅｇｅｒｍａｎｉｕｍ (ｎｃ -Ｇｅ :Ｈ)ａｎｄｓｉｌｉｃｏｎ (ｎｃ -ｓｉ:Ｈ)ｃａｎｂｅｇｒｏｗｎｂｙｐｌａｓｍａ -ｅｎｈａｎｃｅｄｃｈｅｍｉｃａｌｖａｐｏｒｄｅｐｏｓｉｔｉｏｎ (ＰＥＣＶＤ)ｆｒｏｍＧｅＨ4[1] .Ｍａｊｏｒｄｉｆｆｅｒｅｎｃｅｓ,ｈｏｗｅｖｅｒ ,ｅｘｉｓｔｂｅｔｗｅｅｎｔｈｅｐｌａｓｍａｉｎｄｕｃｅｄｄｅｐｏｓｉｔｉｏｎｏｆｇｅｒ ｍａｎｉｕｍａｎｄｓｉｌｌｉｃｏｎｒｅｆｌｅｃｔｉｎｇｌａｒ…     

Design and compilation of urban geomorpholo-gical maps——A case study in Chongqing city

Ｄｅｓｉｇｎａｎｄｃｏｍｐｉｌａｔｉｏｎｏｆｕｒｂａｎｇｅｏｍｏｒｐｈｏｌｏｇｉｃａｌｍａｐｓ———ＡｃａｓｅｓｔｕｄｙｉｎＣｈｏｎｇｑｉｎｇｃｉｔｙｉａｏＣｈｅｎｇｔａｉ，ＺｈａｎｇＹｏｕｇａｎｇＤｅｐａｒｔｍｅｎｔｏｆＵｒｂａｎＳｃｉｅｎｃｅ，...     

In-situ SEM and Stereomicroscope Study Delamination Evolution of Glass Fabric Reinforced Polycarbonate Composite

ＩｎｔｒｏｄｕｃｔｉｏｎＤｅｌａｍｉｎａｔｉｏｎｉｓｉｎｔｅｒｌａｍｉｎａｒｄｅｂｏｎｄａｎｄｓｅｐａｒａｔｉｏｎｏｆｌａｍｉ ｎａｔｅ .Ｉｎｒｅｃｅｎｔｙｅａｒｓ,ａｌｏｔｏｆｒｅｓｅａｒｃｈｅｒｓｈａｖｅｏｂｓｅｒｖｅｄｔｈｅｅｖｏｌｕ ｔｉｏｎｐｒｏｃｅｓｓｅｓｏｆｉｎｔｅｒｌａｍｉｎａｒｆｒａｃｔｕｒｅｏｆｔｈｅｒｍｏｓｅｔｔｉｎｇｒｅｓｉｎｃｏｍ ｐｏｓｉｔｅｓｂｙｓｃａｎｎｉｎｇｅｌｅｃｔｒｏｎｍｉｃｒｏｓｃｏｐｅ (ＳＥＭ) [1— 4 ] .Ｂｕｔｔｈｅｄｉ ｍｅｎｓｉｏｎｏｆｔｈｅｓｐｅｃｉｍ…     

Local Structure of Ge／SI（100） Self—Assembled Quantum Dots

Ｔｈｅｌａｔｔｉｃｅｍｉｓｍａｔｃｈｂｅｔｗｅｅｎｔｈｅｓｕｂｓｔｒａｔｅａｎｄｔｈｅｏｖｅｒｇｒｏｗｎｌａｙｅｒａｌｌｏｗｓｔｈｅｆｏｒｍａｔｉｏｎｏｆｓｅｌｆ ａｓ ｓｅｍｂｌｅｄｑｕａｎｔｕｍｄｏｔｓ (ＱＤｓ)ｔｈｒｏｕｇｈｔｈｅＳｔｒａｎｓｋｉ Ｋｒａｓｔａｎｏｖｍｅｃｈａｎｉｓｍ[1,2 ] .Ｔｈｉｓｔｅｃｈｎｉｑｕｅｈａｓｂｅｅｎｓｕｃｃｅｓｓｆｕｌｌｙａｐｐｌｉｅｄｔｏｖａｒｉｏｕｓｓｅｍｉｃｏｎｄｕｃｔｏｒｓｙｓｔｅｍｓ,ａｎｄｉｎｐａｒｔｉｃｕｌａｒｔｏＧｅ/Ｓｉｑｕａｎｔｕｍｄｏｔｓ(Ｑ…     

Fibrinogen Structural Changes Caused by Glass Surface Adsorption Detected by Solid Surface Fluorescence Spectroscopy

ＦｉｂｒｉｎｏｇｅｎＳｔｒｕｃｔｕｒａｌＣｈａｎｇｅｓＣａｕｓｅｄｂｙＧｌａｓｓＳｕｒｆａｃｅＡｄｓｏｒｐｔｉｏｎＤｅｔｅｃｔｅｄｂｙＳｏｌｉｄＳｕｒｆａｃｅＦｌｕｏｒｅｓｃｅｎｃｅＳｐｅｃｔｒｏｓｃｏｐｙ＊ＧｏｎｇＹａｎｄａｏ（公衍道），ＤｉｎｇＸ...     

JOURNAL OF SICHUAN UNIVERSITY (Natural Science Edition)Bimonthly Vol.38 No.1 Sum Contens Dec.2001

ＭａｔｈｅｍｔｉｃｓａｎｄＣｏｍｐｕｔｅｒＳｃｉｅｎｃｅＯｎｔｈｅＤｉｏｐｈａｎｔｉｎｅＥｑｕａｔｉｏｎｘ2 -Ｄｙ4 =1ＬＵＯＪｉａ ｇｕｉ,ＹＵＡＮＰｉｎｇ ｚｈｉ (5 )……………………………………………………ＡＮｏｔｅｏｎＡｒｔｉｃｅｏ ＭｏｒｅｓｃｏＦｕｚｚｙＰｒｏｘｉｍｉｔｙＳｐａｃｅｓ ＬＩＳａｎ ｊｉａｎｇ ,ＬＵＯＭａｏ ｋａｎｇ (6 )…………………………………………ＤｅｔｅｃｔｉｏｎｏｆＳｔｅｐ ＳｔｒｕｃｔｕｒｅＥｄｇｅＢａｓｅｄｏｎＯｒｄｅｒＳｔａｔｉｓｔｉｃＦｉｌｔｅｒＭＡＨｏｎｇ ,ＹＵ…     

What are Exciting in Laser Science

ＷｈａｔａｒｅＥｘｃｉｔｉｎｇｉｎＬａｓｅｒＳｃｉｅｎｃｅＹｕｅｎ－ＲｏｎＳｈｅｎＤｅｐａｒｔｍｅｎｔｏｆＰｈｙｓｉｃｓ,ＵｎｉｖｅｒｓｉｔｙｏｆＣａｌｉｆｏｒｎｉａＭａｔｅｒｉａｌｓＳｃｉｅｎｃｅｓＤｉｖｉｓｉｏｎＬａｗｒｅｎｃｅＢｅｒｋｅｌｅｙＮ...     

柠檬酸和2D树脂在染色棉织物上交联处理的比较

从棉织物产生折皱的原因，柠檬酸(CA)和2D树脂与棉纤维反应机理，分析比较了活性染料染色的棉织物，分别用柠檬酸和2D树脂整理后，折皱回复性、染色牢度的变化．     

聚乳酸织物碱性染色工艺探讨

为提高生产效率并简化聚乳酸(polylactic acid,PLA)织物的传统染色工艺,利用耐碱的分散染料在碱性条件下对PLA织物进行染色。研究了处理液pH值对PLA织物减量的影响,以及PLA织物的中性染色及碱性染色产品的K/S值及减量率;讨论了碱性染色温度和碱剂用量对PLA织物K/S值和强力的影响;对比了PLA织物有无还原清洗工序的碱性染色产品的色牢度,以及碱性染色与传统染色的工序、配方及产品的颜色深度。结果表明:随着处理液pH值的升高,织物的减量率逐渐增加且碱性条件下更有利于PLA织物的减量;碱性染色织物的减量率及K/S值均高于中性染色产品;随着染色温度的升高和碱剂用量增大,染色织物颜色逐渐变深且断裂强力下降;PLA织物碱性染色产品色牢度好且染色后无需还原清洗;碱性染色比传统染色方法所得织物的颜色更深且碱性染色工艺更加节省能源、水以及时间。     

Application of Acid Dyestuffs with Different Molecule Structure in Combined Dyeing and Finishing of Cotton Fabric

Simultaneous dyeing and durable press finishing of cotton fabrics with acid dyes bearing the different molecule structure and durable press finishing agent （DP agent abbr. ） based on modified DMDHEU were investigated by using the pad-dry-cure process. Some factors affecting the process, such as structure of acid dyes, DP agent, catalysts and curing temperature were discussed. The dyed and finished fabrics were evaluated with respect to color strength, fixation, crease recovery angle, breaking strength and fastness properties. The results indicate that structure of acid dyes has a striking effect on the color strength of dyed and finished cotton fabric. The color strength and dry crease recovery angle of dyed and finished cotton fabric increases, whereas breaking strength decreases with increasing concentration of DP agent. It is necessary for ammonium nitrate to serve as catalyst. It is found that relatively satisfactory properties of dyed and finished cotton fabric can be obtained with appropriate adjustment of treating conditions.     

Molecular Weight Distributions of Cotton Cellulose Treated with a Polycarboxylic Acid at Different pH

In last paper, the average molecular weight of a control cotton fabric and cotton fabrics treated with the polycarboxylic acid at different pH were measured. The result doesn‘t support the hypothesis that the pH of the finishing bath can affect the depolymerization of the finished cotton fabric. In order to understand more about it, the molecular weight distributions of the control and finished cotton fabrics were measured and the reason was fund. From the ratio and the molecular weight of the low molecular part one can see that the pH of the finishing bath can affect the depelymerization of the f‘mished cotton fabrics. The phenomenon that the average molecular weights of the cotton fabric crosslinked with BTCA at different pH are almost same is attributed to that the crosslinks are not broken completely when treated with 0.5 M NaOH solution at 50℃ for 144 h.     

Mechanism of Citric Acid Crosslinking in Cotton Fabrics

Citric acid (CA), which is cheap and nontoxicity, was regarded as the most likely formaldehyde - free durable press finishing reagent to be commercialized. To improve the drawbacks of CA finishs such as yellowing and less durability to home laundering, further research should be done. In this paper, a method had been found to differentiate ester crosslinkings from ester attachments on CA treated fabric and the variations of both ester crosslinkings and ester attachments under different curing conditions were also studied.     

1,2,3,4-丁烷四羧酸在丝和棉纤维上的整理工艺

以 1,2 ,3,4_丁烷四羧酸 (BTCA)对丝和棉纤维上的整理工艺进行研究 ,通过对织物的增质率、黄度、白度、折皱回复角等性能指标的测试 ,确立了最佳工艺 ,发现pH值与增质率的关系 ,并提出了整理废液的循环使用     

苎麻织物酶柔处理对其刺痒感的影响

简要阐述苎麻织物刺痒感产生的原因，探讨酶柔处理以降低其刺痒感的方法。实验中采用纤维素酶加柔软剂处理苎麻织物，通过正交实验及验证试验获得最佳工艺条件，并对织物的减量率，弯曲长度，悬垂系数、经向强力损失率、刺痒感等六个指标进行测试与评价。不同处理工艺能减少纱线的抗弯刚度．织物的弯曲长度和悬垂系数，从而降低苎麻织物的刺痒感。     

PT-28对常见无机酸和有机酸的萃取行为研究

系统地研究了2－乙基己氧基甲基磷酸二（2－乙基己基）酯（代号PT－28）对硫酸、磷酸、硝酸、高氯酸、盐酸和醋酸六种酸的萃取行为，发现PT－28对硫酸、磷酸、盐酸和醋酸均不萃取，只对硝酸和醋酸萃取，这与中性磷氧萃取剂甲基膦酸二甲庚酯（P350）和磷酸三正丁酯（TBP）对强酸的萃取有显著的不同，并对其萃取机理进行了讨论。     

草酸对磷钨酸催化氧化环己烯合成己二酸的影响

报道了在无相转移剂条件下,用磷钨酸催化过氧化氢氧化环己烯合成己二酸,收率最高为72.6%.草酸的加入使己二酸产率明显提高,在优化条件下即反应物摩尔比为环己烯∶过氧化氢∶磷钨酸∶草酸=1∶4.0∶0.002∶0.0315时,80℃反应8h收率可达87.7%.这与草酸的配体效应有关.该方法避免了昂贵且有毒的相转移剂的使用.     

（NH_4）_2SO_4─ZrO_2体系的酸性和酸量的研究

本文用毗啶吸附红外光谱、程序升温分解（ＴＰＤ）和差热分析（ＤＴＡ）等技术，对不同温度下用浸渍法制得的（ＮＨ＿４）＿２ＳＯ＿４－ＺｒＯ＿２样品的性质进行了研究。将研究结果与其催化性能作了关联。研究结果显示，热处理过程中产生了Ｂ酸中心和Ｌ酸中心。低于５７３Ｋ时，随着处理温度的升高，表面酸性与表面酸的总量均不断增大，到５７３Ｋ时表面酸性与表面酸的总量都达到最大值。此时反应活性也最大。超过５７３Ｋ时，随着处理温度升高，表面酸性与表面酸的总量均降低，此时反应活性也相应地降低。