1025T/H燃煤锅炉燃烧添加剂的试验研究

笔者介绍了1025t/h燃煤锅炉加入燃烧添加剂后,锅炉水冷壁的沾污减轻,锅炉减温水量减少,排烟温度降低,同时空预器的吹灰效果改善,锅炉热效率有所提高。     

DHA对大白鼠血胆固醇浓度及磷脂分子组成的影响

探讨DHA降胆固醇的机理并对其剂量依赖性及时效性进行研究。将Wister大鼠分别给予含DHA(0．2％，0．4％，0．6％，1．0％，1．5％，2．0％)饲料喂养，检测其血脂的含量。其结果是胆固醇降低与DHA添加剂量成正比；血和肝微粒体中的亚油改比与饲料中DHA添加量成正比；16：0—18：2磷脂酰胆碱(PC)也随之增加。     

含氮硼酸酯润滑油添加剂的合成与性能测试

用硼酸与十六醇和乙醇胺反应合成了含氮硼酸酯润滑油添加剂．合成的最佳工艺条件为十六醇、硼酸和乙醇胺摩尔比为1．2：1：2．6，脱水反应6h．用四球机测试了含该添加剂0．1％～7％的基础油的抗磨性能．四球机试验结果表明含氮硼酸酯添加到基础油中，能显著提高其抗磨性能，且添加量存在一个最佳值．     

关于低过剩空气系数燃烧控制的节能效果

本文从工业锅炉排放烟气量影响锅炉热损失的观点出发，分析研究有关降低过剩空气量燃烧，以减少排烟热损失，从而降低燃烧消耗量，以及提高锅炉热效率一类问题。采用低过剩空气系数燃烧控制系统，以及有氧量修正的控制方案，是当前提倡经济燃烧，实现节能的方向。     

868菌发酵物用作大黄鱼和鲈鱼饵料添加剂的初步试验

以饵料0．5％的量添回868菌发酵物,作为大黄鱼（厦门）,大黄鱼（连江）和钙鱼饵料添加剂,它们的日增长率分别比对照提高16．1％,18．8％和32．5％,日增重率分别比对照提高12．5％,21．4％和16．4％,同时,大黄鱼（厦门）,大黄鱼（连江）和鲈鱼钌料系数比对照分别降低17．7％,9．4％和20．1％,结果表明：868菌发酵物作为饵料添加中以促进大黄鱼和鲈鱼的生长,并且可以提高它们的饵料效率。     

焦炭固定床燃烧氮氧化物排放实验研究

为降低锅炉NO的排放,研究焦炭在固定床中燃烧时的氮氧化物排放特性,分析焦炭数量对NO排放的影响。在其他条件不变的情况下,取焦炭质量分别为0．5、1．0和2．0g的煤样进行燃烧实验。结果表明：焦炭燃烧NOx排放与燃烧过程密切相关,在固定床中有还原层存在时,NO排放处于低水平稳定状态。随着焦炭还原层的消失,NO转化率迅速增加。在设计层燃燃烧锅炉时。加大燃煤炉中焦炭层的厚度．可以降低锅炉NO的排放．焦炭层厚度增加4倍．NOx排放降低73．86％．     

强化豆乳饮料的研制

乳酸钙和抗坏血酸强化豆乳的工艺条件的研究性试验结果表明：钙盐浓度和PH值大小明显影响制品的品质、乳酸钙强化的适宜浓度为0％－0．09％，PH值为5．5－7．5；抗坏血酸强化适宜添加量为10mg%，PH值为6．30－7．50；最适的加糖量为8％，稳定剂以海藻酸钠为佳，适宜添加量为0．1％。成品通过感官评尝，具有明显的奶香味，甜酸可口。     

用吸附还原与三元催化器组合降低富氧汽油机NOx的排放

采用稀燃技术虽可大幅改善汽油机的燃油经济性和排放性，却因稀燃的富氧燃烧使NOx降低较少．为此，采用吸附还原催化转化器与三元催化转化器的不同组合方案，对一台电控燃油喷射16气门稀燃汽油机进行了降低富氧条件下NOx排放的试验研究．试验结果表明：三元催化转化器位于吸附还原催化转化器之前的布置方案具有最好的降低稀燃汽油机NOx排放的效果．在该试验条件下，NOx催化转化率最高可达到97．3％。     

新型燃油添加剂对汽油机燃烧与排放的影响

为了探讨新型多效燃油添加剂(代号MAZ)对车用汽油机燃烧和排放特性的影响,文中介绍了燃油添加剂的功用和基本工作原理,并在汽油机试验台架上,进行了一系列燃油中添加剂在等同工况下的外特性试验和负荷特性试验．试验结果表明,燃油添加剂MAZ能有效改善汽油机的燃烧过程,排气中CO,HC的排放分别减少11．6％～19．6％和22．9％～25．2％．     

围产期奶牛饲喂阴离子盐对血液钙磷浓度、尿液pH值、产奶量及产后健康状况的影响

选择15头中国荷斯坦经产奶牛按配对试验设计研究了在围产期（产前3周至分娩）饲喂阴离子盐添加剂对奶牛血液钙磷离子浓度、尿液pH值、产奶量及产后健康状况的影响。试验处理为添加阴离子盐的试验1组（50g／d）、试验2组（100g／d）和对照组（0g／d）。结果表明：阴离子盐饲粮显著提高了奶牛产前产后的血清钙离子浓度（P〈0．05），但两试验组之间差异不显著；对血磷浓度影响不显著，血钙与血磷间互作效应不显著（P〉0．05）。试验组尿液pH值显著降低（P〈0．05），试验1组pH约降低了0．6，试验2组pH约降低了1．0，但两试验组之间差异不显著（P〉0．05）；对产奶量没有显著影响（P〉0．05）。对产后疾病的预防效果比较明显，胎衣不下率试验1组降低了20％，试验2组降低了40％；产后瘫痪发病率试验1组降低了40％，试验2组降低了60％；乳房水肿发病率试验1组降低20％，试验2组降低了20％。围产期奶牛饲喂阴离子盐能够显著提高血钙浓度，降低尿液pH值和有效预防产后代谢疾病，对产奶量影响不显著。     

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.