三十烷醇浸种对冬小麦幼苗生长的生理效应

本文报导了三十烷醇浸种对冬小麦幼苗生长的生理效应。实验证明,用三十烷醇浸种能增加叶面积,提高单株鲜、干重,增加呼吸强度,提高淀粉酶活性,加速淀粉转化。     

激素类物质对大白桩菇菌丝生长的影响

研究了激素类物质三十烷醇、肌醇、赤霉素对大白桩菇菌丝生长的影响.结果表明,三十烷醇对大白桩菇菌丝生长具有更大的促进作用,最适宜的添加质量浓度为1 mg/L.     

我国首次生产高纯三十烷醇晶体

中国物资储运总公司郑州检验所化学研究室以天然蜂蜡为原料,采用萃取、化学处理、控温分步结晶新工艺,成功地研制出高纯度(99～99.8％)三十烷醇晶体。同时还筛选出性能优良的表面活性剂,配制成优良剂型。三十烷醇作为植物生长调节剂,促进植物生长的效果好。国内外的试验表明,纯度为99.4％的三十烷醇对玉米的促生长作用为纯度97.3％的三十烷醇的四倍,98％的三十烷醇对水稻幼苗的促生长生理活性为85％的三十烷醇的10倍。对植物外施三十烷醇可直接或间接地调节一些生理和生化过程,如促进种子发芽,提高发芽率和发芽势:促进植物细胞分裂和伸长促进根、茎、叶的生长;促进花芽分化,增加开花数;促进植物组织吸     

三十烷醇浸种对春小麦幼苗生长的生理效应

本文报导了三十烷醇浸种对春小麦幼苗生长的生理效应。实验证明,用适宜浓度的三十烷醇溶液浸种能促进春小麦幼苗叶片与根的生长,提高单株的鲜重和干重,增加呼吸强度,提高淀粉酶的活性,加速淀粉的转化和可溶性糖的运输。另外,还能提高硝酸还原酶的活力,对氮素代谢可能亦存在增益效应。     

三十烷醇对春小麦的生理效应

本文探讨了三十烷醇对春小麦品种赛洛斯的生理效应,试验研究说明:三十烷醇对春小麦的生长量、叶绿素含量、硝酸还原酶和性细胞透性方面,均有明显的生理效应,为在大田应用三十烷醇提供了一定的理论依据。从试验选定的三个处理浓度试验结果比较来看,以0.5ppm为最佳。     

三十烷醇对风尾茹生育刺激效应的研究初报

为进一步探讨风尾菇的增产栽培技术,我们观察了不同浓度的三十烷醇对风尾菇生育的刺激效应。实验表明,三十烷醇可促进风尾菇菌丝体的生长和提高多酚氧化酶的活性;也能促进子实体的发育,缩短生长周期,提高产量和蛋白质的含量等。此项工作为食用菌丰产栽培技术措施提供一些依据。     

三十烷醇对甘薯生理效应的探讨

以甘薯品种210—18为材料,采用溶液培养的方法,试验0.1、0.2、0.5、1.0ppm三十烷醇浸插苗和叶面喷施对植株根系发育,光合速率以及植株鲜重变化的影响,同时测定根和叶的过氧化物酶活性以及过氧化物酶同工酶的聚丙烯酰胺凝胶电泳。观察到在试验浓度范围,用0.5ppm三十烷醇浸甘薯插苗4小时有利于发根壮苗,在甘薯生长后期用0.2ppm三十烷醇叶面喷施,能适当抑制茎叶营养生长的速度,这对于养分向地下转运促进块根膨大是有利的。这种三十烷醇对甘薯生长的影响可能通过过氧化物酶活性的变化影响不同器官吲哚乙酸含量水平来实现。     

影响平菇产量诸因素探讨

本文研究了培养料配方，处理方式及菌种的接种量，三十烷醇浓度等因素对平菇菌丝生长和产量的影响。试验结果表明：以棉籽壳为主的培养料产量最高，菌种用量以１０％左右为宜，培养料中添加２．０％石灰处理杂菌效果最佳，三十烷醇浓度以０．５￣１．０μｇ／ｍＬ最合适。     

[简报]从蜂蜡分离纯化三十烷醇-1的研究

早在1933年,奇布纳(Chibnall)等就首次从苜蓿中提取分离得三十烷醇-1,又名蜂花醇。四十多年后,里斯(Ries)等指出苜蓿干草能促进农作物的生长并增加收成,于是他们着手分离苜蓿中的活性成份。后经质谱鉴定,这种活性物质就是三十烷醇-1。里斯认为三十烷醇-1是一种无毒、高效、快速及适用范围相当广泛的植物生长促进剂。一毫克样品就能使1000M~2(相当于1.5亩)种植面积的作物增产10—40％。因而引起了     

植物生长调节剂对平菇菌丝生长和产量的影响

本文报道了２个使用时期，５种植物调节剂对平菇菌丝生长和产量的影响，试验结果表明，使用生长调节剂可促进平基菌丝生长和子实体发育，提高菇体产量。在所测试的各种生长调节剂中，以三十烷醇效果最佳，其余几种生长调节剂也可较大幅度地增产。在２个不同的使用时期内，又以现蕾期喷洒效果最佳。     

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.