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This model indicates that the sulfur isotopes, whose values tend to be negative fractionate to a large scale because of the reductive process of dissimilating bacteria of sulfate.

根据内蒙古乌达矿区高煤9煤层(有机同位素值 d 34 S=-12.3‰~5.8‰,黄铁矿同位素值 d 34 S=-18.7‰~1.1‰)和低煤13煤层(有机同位素值 d 34 S 为8.9‰~ 11.5‰,黄铁矿同位素值 d 34 S 为8.3‰~ 9.7‰)剖面上有机和黄铁矿同位素的组成,结合煤岩学特征的综合分析以及黄铁矿化菌落和蓝藻胶壳的发现,提出了高煤中的演化模式,认为高煤中的同位素由于酸盐的异化细菌还原作用导致同位素大规模分馏,使之趋于负值。

P28 紫色 Formation of a peptide bond 肽键形成–4侧链具有的反应–形成二硫键-其它反应 Tyr,His,Arg Review Isoelectric Point Titration滴定 of an amino acid 滴定 Gly幻灯片 18 His Lys Glu Reaction of amino acids Section 4 Protein isolation and purification 蛋白质分离及提纯 Working With Proteins Experimental techniques for protein analysis and characterization Purification steps A cell contains many types of proteins In the lab we want to isolate a single protein for experiments Purification steps We first grow cells or isolate tissues that contain the protein of interest We break open the cells to produce a crude extract Use centrifugation离心 to separate soluble from insoluble material We fractionate 分离 the protein mixture based on properties of such as size, charge affinity or solubility.

丹磺酰氯与氨基酸反应生成荧光性质强和稳定的磺胺衍生物,用于多肽链NH 用于多肽链 3末端氨基酸的标记烃基化反应(1) 2,4-二硝基氟苯2,4-dinitrofluorobenzene,二硝基氟苯(二硝基氟苯 DNFB也叫做试剂。DNFB在弱碱性溶液也叫做Sanger试剂试剂中与氨基酸发生取代反应,生成黄色化合物二硝基二硝基苯基氨基酸(dinitro phenyl amino acid, DNP氨基酸氨基酸)苯基氨基酸氨基酸(2)苯异氰酸酯(phenylisothiocyanate, PITC)在弱碱性条件下,与氨基酸反应在弱碱性条件下,生成苯乙内酰脲 PTH衍生物,(phenylthiohydantoin, PTH)衍生物,即PTH-氨基酸,此反应又称之Edman反应,该反应是蛋白质或多肽氨基酸序列测定常用的反应。

In order to investigate the effects of different sulphur fertilizers on rice and the recycling and balance of sulphur in rice-rice agro-ecosystem, seven treatments with different sulphur fertilizers were applied in a rice-rice cropping field with randomized block design, which included no sulphur, ammonium sulphate, single superphosphate, elemental S, gypsum, 50% S from gypsum and 50% from elemental sulphur (50% GYP + 50% ES), 70% S from gypsum and 30% from elemental sulphur (70% GYP + 30% ES).

为了了解不同肥对水稻的效应及在水稻栽培农业生态系统中的循环与平衡情况,采用随机区组设计,将不同来源的肥设为7个处理包括:对照,酸铵,过磷酸钙,自然素,石膏,50%石膏+50%自然素,70%石膏+30%自然素,对水稻进行处理。

According to the compared analysis of prevention sulfur deposition during the production of high sour gas well, the key of prevent sulfur deposition and to control sulfur blocking is choose right element sulfur, carry out some research on the selection of sulfur solution, remix the triethylenetetramine, diethylenetriamine and monoethanolamine in different ratios, finally formed LJ-1 compounding which is best fit the production of north Sichuan province.

对比分析了多种沉积防治方法,防治的关键在于溶剂的合理选择,通过溶剂优选室内评价实验研究筛选出三乙烯四胺、二乙烯三胺和乙醇胺等三种单剂,按照不同的比例与现场使用的防冻剂乙二醇进行复配,最终形成了适合川东地区高含气井的溶剂LJ-1合理配方,性能评价实验表明溶剂LJ-1溶速率快、溶解度高、腐蚀小。

Analysis of the material change, garlic cells bioactive aliphatic thio cysteine sulfoxide and thiosulfate propenyl cysteine sulfoxide sulfur compounds in garlic, such as the role of enzymes, the generation of thiobarbituric acid sub - ester, propylene-based thiosulfinates, allyl thiosulfinates as garlic pigment precursor substances, and further changes occurred in the green garlic.

从物质变化分析,大蒜细胞中的生物活性物质代脂肪族半胱氨酸亚砜和代丙烯基半胱氨酸亚砜等含化合物在蒜酶的作用下,生成代亚磺酸酯、丙烯基代亚磺酸酯、烯丙基代亚磺酸酯,作为大蒜色素物质的前体,进一步发生大蒜绿变。

Under the condition that coking process and ratio of coal,rank of coal were in a relative stable condition,qualitative analysis was done to the relationship among ammonia yield and residual ammonia exhausted gas entering into saturator or not,gas desulfurization unit location,the primary cooling way,blending moisture,gas collection temperature and so on,the various factors affecting degree to the yield of ammonia were concluded,in order to organize production scientifically and rationally,and provide a reference to the same industry to solve the problem of the ammonia output fluctuation.

通过对焦化厂铵工序的长期跟踪研究,明确了造成铵产率波动的主要因素,在焦化流程和配煤比、煤种相对稳定的情况下,对铵产率与剩余氨水蒸氨尾气是否进入饱和器、煤气脱装置位置、煤气初冷方式、配煤水分、煤气集合温度等因素之间的关系进行了定性分析,得出了以上各种因素对铵产率的影响程度的结论,以便科学合理地安排铵的生产计划,并为同行业解决铵产量波动的问题提供参考。

To research the desulfuration characteristics of calcium-based sulphur-fixing agent and decomposing-rate of desulphur object CaSO4 systemically under different conditions, and analyzed its desulfuration mechanism .

为了探求煤燃烧过程中传统钙基固剂固率低下的原因,本实验选用有代表性的含为2.92%的国家标准煤样,在不同条件下系统的研究了钙基固剂的固特性和固产物CaSO4的分解率;并分析了其固机理。

The catalytic transformation pathway can change to decrease the yield of hydrogen and yield methyl-contained sulfides such as methyl mercaptan, dimethyl sulfide and dimethyl disulfide, but overlarge concentration of methanol would holdback the transformation of isobutyl mercaptan. The transformation of isobutyl mercaptan was favorable if the volume ratio of methanol and benzene was 0.2.The addition of methanol assume certain effect on the catalytic cracking of di-n-butyl sulfide in solvent benzene but without changing the cracking reaction mechanism of di-n-butyl sulfide.

甲醇也可以使异丁醇的催化转化路径发生改变降低化氢的产率,生成甲醇、甲醚及二甲基二化物等含甲基化物,但甲醇的浓度过高会抑制异丁醇的转化,在反应体系中当甲醇的体积占到溶剂苯体积的20%时对异丁醇的转化较为有利;甲醇的添加对丁醚在溶剂苯中的催化裂化有一定影响,但没有改变丁醚的裂解反应历程。

High organic sulfur Beisu bituminous coal and high pyritic sulfur Yangquan anthracite, which involved in raw coal and no inorganic sulfur coal, have been used to investigate the regularity about sulfur forms evolution during combustion by means of improved automatic sulfur analyzer in this paper.

利用改进的自动测仪,以高有机北宿烟煤和高黄铁矿阳泉无烟煤作为研究对象,在不同温度下对原煤和脱无机煤在煤燃烧过程中析出特性进行了研究,另外对原煤和脱无机煤在热解和燃烧时形态的变化进行了研究。

By using established analytical methods for determination of elemental sulfur,hydrogen sulfide,mercaptan,disulfide,total active sulfur and corrosive sulfur in Middle East crude oils were conducted Differences between the sum of various types of active sulfur and total active sulfur,the relationship of total active sulfur and total sulfur in the fraction of IBP to 350 ℃,the relationship of total active sulfur and corrosive sulfur,and the distribution of different active sulfurs in the same crude oil and to...

利用已经建立起来的方法对中东原油中的元素化氢、醇、二化物、总活性、腐蚀性进行了分析,并讨论了不同类型活性的加和值与总活性的相关性、初馏点至 3 5 0℃馏分中总活性和总的关系、总活性与腐蚀性的关系、同一原油中不同类型活性和不同原油中总活性的分布以及中东原油在化合物分布上与哈萨克斯坦原油的差别等问题。

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I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

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