基于AutoLISP的离子氮化炉炉体组件模块开发

研究了Auto CAD环境下实现离子氮化炉炉体设计的参数化绘图开发。提供了基于Auto LISP技术进行炉体组件模块的开发设计方案,并以炉体下进水管座为具体对象给出相关程序。该方法对开发其他定型机械产品CAD系统具有借鉴价值。     

连杆机构计算机辅助设计

以 Auto CAD为支撑软件 ,利用 Auto LISP开发语言 ,建立了连杆机构计算机辅助设计系统(LGCAD) .该系统可以确定构件尺寸参数 ,验算机构最小传动角 ,绘制机构运动简图 .还可以通过改变输入参数 ,获得多种设计方案 ,进行比较选优 ,既保证了解析法设计的精度 ,又避免了繁琐复杂的公式推演及计算 .     

一个工程图样拼合输出CAD系统的开发

用Auto CAD系统在大幅面的图形输出设备上打印工程图样时,由于图纸幅面的多样性与打印介质幅面的固定性之间存在着矛盾引发了浪费打印介质、频繁操作打印设备和打印效率低下等一系列问题,本文用Auto LISP语言开发了一个基于Auto CAD R14系统上运行的"工程图样拼合打印输出系统",该系统利用将不同幅面、不同比例的工程图样拼合成占据完整打印介质幅宽的版式进行输出的原理,使用在图低空间设定模型空间显示比例的方法来规划绘图比例,并利用Auto LISP语言和菜单技术等开发手段建立了一个具有图形操作界面与Auto CAD系统完全融合的应用系统,解决了上述问题.     

一个工程图样拼合输出CAD系统的开发

用AutoCAD系统在大幅面的图形输出设备上打印工程图样时，由于图纸幅面的多样性与打印介质幅面的固定性之间存在着矛盾引发了浪费打印介质、频繁操作打印设备和打印效率低下等一系列问题，本文用Auto LISP语言开发了一个基于Auto CAD14系统上运行的“工程图样拼合打印输出系统”，该系统利用将不同幅面、不同比例的工程图样拼合成占据完整打印介质幅宽的版式进行输出的原理，使用在图低空间设定模型空间显示比例的方法来规划绘图比例，并利用Auto LISP语言和菜单技术等开发手段建立了一个具有图形操作界面与Auto CAD系统完全融合的应用系统，解决了上述问题．     

由岩石电性和弹性参数求取地层储层参数

储层参数的准确求取可为提高油气储层预测与评价的精度、减少勘探开发的风险提供帮助。通过基于Auto Scan-Ⅱ和Auto Lab-1000平台的岩石物理实验获取了低孔致密泥质砂岩岩石的弹性及电性参数,对地层的孔隙度、渗透率、饱和度等储层参数的转换关系进行了详细的研究与分析,认为由电阻率与孔渗饱三种储层参数的连接更加紧密,同时得到了针对W-S公式胶结系数取值的最佳范围,这些研究成果可以为储层参数的确定及储层预测与评价提供可靠的岩石物理依据。     

计算机辅助绘制复杂压铸模具图

本文论述了用微型计算机辅助绘制复杂压铸模具图的方法。整个软件包括模具装配和零件图的绘制以及压铸模标准零件变参数图形库等,它以汉化AutoCAD 2.62为支撑软件,统一规定了绘图参数和绘图环境,图素由相对坐标确定,输入图形尺寸不限,用绘图仪或打印机按比例输出图形。图块可用多种方法复制,修改灵活,绘制的零件图含尺寸标注和汉字注释,能直接用于制造加工。通过Auto lisp编制的变参数图形库用参数形式自动绘图,完善和扩展了Auto CAD的用户开发功能。     

CAD课程改革——网络CAD测试技术的研究

计算机辅助设计(CAD)作为工业领域先进技术的代表,在现代工程及产品设计中有着广泛的应用,因此CAD人才的需求量大大增加,传统的考核方式已不适应其发展需求。为准确高效地评价CAD人才技术水平,开发网络智能化测试系统势在必行。从研究网络测试技术中的体系结构和开发平台入手,进而研究基于组件的Auto CAD图形文件的格式转换和网络传输技术,以便实现Auto CAD图形文件的管理和传输。该研究为网络CAD测试系统的开发奠定了理论基础和现实依据。     

机械图样中技术要求的程控注法

本文以Auto CAD10.0绘图软件为基础,建立符合国际规定的技术要求的软件标注系统,论述开发该软件的过程和方法,并通过标注图例说明其实用价值。     

浅谈Auto CAD在机械制图中的应用技巧

从Auto CAD在机械制图中的主要优势入手,分析了Auto CAD在机械制图中的系统应用,以期对机械设计师在学习Auto CAD的过程中有所借鉴。     

基于ARX环境下图形数据库的设计

描述了在ARX环境下用C 操作Auto CAD图形数据库的方法。图形数据库是连接系统数据库与图形显示的桥梁。由于ARX可分享Auto CAD的地址空问并直接调用Auto CAD动态链接库,因而使得操作Auto CAD图形数据更加方便。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.