12GHz频段波导传输型FET放大器

本文叙述了应用ＧａＡｓ ＭＥＳ ＦＥＴ直接安装在矩形波导管内，实现波导型二端口场效应晶体管放大的结构；同时，介绍利用Ｓｍｉｔｈ园图进行匹配设计的工程近似法；以及从工程的观点导出噪声系数的转换公式．并把这些结果用于研制１２ＧＨｚ频段ＧａＡｓ ＭＥＳＦＥＴ低噪声波导传输型放大器。当应用国产ＷＣ—６０型砷化镓场效应晶体管（该管用在５０欧微带放大系统时，测得功率增益为９ｄＢ；噪声系数为２．６ｄＢ）制成一级功率增益ＧＰ≥１０ｄＢ；噪声系数ＮＦ≥２ｄＢ的波导传输型前置放大器，     

GaAs600门门阵列及电路设计系统的研究

本文提出一种以ＧａＡｓＭＥＳＦＥＴ双层金属布线工艺和ＳＤＦＬ电路形式为基础的ＧａＡｓ６００门门阵列基片的结构，阐述了实用ＧａＡｓ单元库的设计准则和方法，并以全加器为例说明了宏单元库的电路形式，几何结构，内部布线及对输入输出的考虑，实用ＧａＡｓ门阵列设计系统已在ＣＯＭＰＡＣＡＤ工作站上建立，文中给出了一个用该系统设计的应用实例。     

SMA同轴封装高速光电探测器

采用自制ＳＭＡ同轴管壳和普通ＴＯ－１８管过对同型同批的ＩｎＧａＡｓＰＩＮ光电探测器芯片进行了封装并用自建测试系统对其Ｃ－Ｖ特性进行了测试比较，结果表明：与普通ＴＯ－１８管壳封装相比，ＳＭＡ同轴管壳封装器件电容减少～０．４ｐＦ，上升时间ｔｒ由８５ｐｓ减至２５ｐｓ以下，半高全宽ＦＷＨＭ由２１０ｐｓ减至８５ｐｓ，等效－３ｄＢ带宽增至６ＧＨｚ以上，瞬态特性显著改善。     

砷化镓场效应管的潜在性失效

为提高ＧａＡｓＭＥＳＦＥＴ静是放是失效阈值，通过ＥＳＤ实验前、后直流参数和热分布变化获取不足１０％的器件表面为永久性失效，而９０％以上的器件表现为潜在性失效的结果。潜在性失效机理类强电场、大电流及ｎｓ级瞬时冲击下，辅之以电热迁移和扩散，致使ＧａＡｓＭＥＳＦＥＴ肖特基势垒受到不同程度损伤，Ｇ－Ｓ、Ｇ－Ｄ间的界面离化或击穿。研究其潜在性失效机理，找出在设计、工艺和材料上的缺陷，以提高器件抗静电能力。     

氨基偶氮苯磺酸类中间体合成方法研究

合成了４－氨基－３－基偶氮苯－４’－磺酸及４－氨基－３－甲氧基偶氮苯－４’－ＤＡＭＷＳＧＣＴ,ＲＰＹＦＢ ＡＹ ＥＰＶ ＷＤＴ Ｏ ＷＪＭ ＷＧＫ ＸＥＧＷ＃? ＧＮ ＴＧＪ ＲＮＯＯＦＨＬ ＦＪＴＦＴＧＪ ＲＮＯＯＷＪ     

MAGNETIC RELAXATION AT EARLY TIMES AND FLUX DIFFUSION BARRIER V（J，B，T） FOR Ti－1223 DOPED WITH Pb AND Ba BY COMPLEX AC SUSCEPTIBILITY MEASUREMENTS

ＭＡＧＮＥＴＩＣＲＥＬＡＸＡＴＩＯＮＡＴＥＡＲＬＹＴＩＭＥＳＡＮＤＦＬＵＸＤＩＦＦＵＳＩＯＮＢＡＲＲＩＥＲＶ（Ｊ，Ｂ，Ｔ）ＦＯＲＴｉ－１２２３ＤＯＰＥＤＷＩＴＨＰｂＡＮＤＢａＢＹＣＯＭＰＬＥＸＡＣＳＵＳＣＥＰＴＩＢＩＬＩＴＹＭＥＡＳＵＲＥＭＥＮＴＳＤ...     

微波MESFET上变频器

微波ＭＥＳＦＥＴ上变频器张锦卫＊冯立民苗敬峰（东南大学无线电工程系，南京２１００１８）随着微波ＦＥＴ的迅速发展，微波场效应管上变频器的研究引起了人们的兴趣．１９８０年Ａｂｌａｓｓｍｅｉｅｒ等人利用ＧａＡｓＭＥＳＦＥＴ制作了频率较低的上变频器［１］，...     

NETS OF LF SETS IN LF SUM─TOPOLOGICAL SPACES

ＮＥＴＳＯＦＬＦＳＥＴＳＩＮＬＦＳＵＭ─ＴＯＰＯＬＯＧＩＣＡＬＳＰＡＣＥＳ￥ＺｈｕＭｉｎｇｋｕｉ；ＳｕｎＱｕｎ（ＴｈｅＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ）Ａｂｓｔｒａｃｔ：Ｉｎｔｈｉｓｐａｐｅｒ，ｗｅｄｉｓｃｕｓｓｔｈｅｒｅｌａｔｉｏｎｏ...     

AlGaAs／GaAs HBT E—M模型直流参数的修正

在Ｓｉ ＢＪＴ Ｅ－ＭＳ模型基础上,对其直流参数进行进行了修正,使其适应于ＡｌＧａＡｓ／ＧａＡｓ ＨＢＴ的直流特性;电流增益不是常量和自热效应。计算机模拟值与测值在中电流和较大电流时相当吻合,这一结果支持了ＨＢＴ电路模拟。     

水合二氟化钴脱水反应动力学的研究

利用非等温热分析方法研究了水合二氟化钴脱水反应动力学。实验数据经Ｆｒｅｅｍａｎ－Ｃａｒｒｏｌｌ法及Ｃｏａｔｓ－０Ｒｅｄｆｅｒｎ法处理,获得脱水反应动力学方程为ｄａ／ｄｔ＝Ａ．ｅｘｐ（－Ｅ／ＲＴ）．（１－α）,反应级数ｎ＝１．０,活化能Ｅ＝１０６．４ＫＪ／ｍｏｌ,频率因子Ａ＝２．９９８＊１０＾１１Ｓ＾－１,ＥＴ ＨＡＤＮＩＳＩＦ ＣＦ ＲＣ ＹＩＤ ＳＭ ＧＪ ＦＪＴＦＢ     

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.     

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.     

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.     

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.     

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。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

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.