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Using FFAP quartz glass capillary columm and adopting adequate carrier pressure and process,a gas chromatographic method was performed for the determination of fatty acids in the epiphyte s from the soil near the Yun-Gui altiplano jokul.
选用固定液为FFAP的石英玻璃毛细管柱,设置合适的载气柱前压、分流比及程序升温,采用气相色谱法测定了采自云贵高原雪山、雪线附近土壤中的真菌的脂肪酸组成。
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The photosynthetic responses to light and temperature were examined in Ulva lactuca collected along the Shantou coast of China, to establish the photosynthetic characteristics in relation with tidal cycles for this common intertidal green macroalga.
对采自汕头沿岸的石蒓在水生和气生不同状态下光合作用对光照和温度的响应特性进行了测定,以探讨这种常见的潮间带绿藻在潮汐循环背景下的光合特性。
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In this dissertation, the chemical constituents of the red algae Laurencia cartilaginea and Laurencia majuscula collected from the South China Sea of the Xisha Islands were studied, and 12 compounds were isolated by combination of extraction and separation and identified by various kinds of spectrum.
本论文主要采用硅胶柱层析、RPC—18反相柱、Sephdex LH—20、薄层层析及重结晶等方法,对采自中国南海西沙群岛的软骨凹顶藻Laurencia cartilaginea和略大凹顶藻Laurencia majuscula的化学成分进行研究,共得到12种化合物,并运用各种波谱手段对得到的化合物进行了结构鉴定。
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From Leontopodium nanum (collected from Zhang County, Gansu Province), 12 compounds were isolated, of which 9 compounds have been identified. Among them, a derivative of coumarin is new.
从采自甘肃漳县的矮火绒草全草的甲醇提取物中,采用同样方法共分离纯化得到12个化合物,鉴定了9个化合物的结构,其中有1个新化合物,命名为6,7-并二氧六环[2-(1-甲酯基-1-甲基)-甲烯基]-香豆素(1)。
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For better understanding the relationship between chemistry composes and activities, and promoting the competitive strength, 16 benzene derivatives (three new compounds and a novel skeleton) were isolated from Ligularia veitchiana which were collected in Hubei province.
为了更好的了解植物药中的化学成分及药效关系,提升我国植物药在国际市场的竞争力,我们对采自湖北的离舌橐吾进行了系统的化学成分分离,得到16个苯的衍生物,其中,新化合物三个,新骨架化合物一个。
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MethodIn the pot test, 4 kinds of wild halophytes (Melilotus suaveolens L, Limonium bicolor K., Salsola collina P.and Artemisia argyi L.) were cultivated in 3 kinds of salt and alkali soils selected from the wastelands of Dagong district, Jixian county and Xiqing of Tianjin city for salt tolerance stress treatments and their physiological indexed such as proline, MAD and soluble sugar content was determined.
方法]土壤为采自天津市大港区、蓟县、西青荒地的3种盐碱土,采用盆栽试验对4种盐生植物(草木樨、猪毛菜、艾蒿和补血草)进行耐盐胁迫试验,测定其耐盐指标(游离脯氨酸、丙二醛和可溶性糖含量)。
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We have investigated on the chemical constituents of Nepeta partite collected from Gansu Zhuanglang, and twenty eight compounds were isolated from the methanol extraction of this species by chromatography techniques. Twenty five compounds were identified by means of chemical and spectra methods IR, FABMS, EI-MS,〓, DEPT, and 2D NMR), among which four compounds were new as isopimar-15-en-3β, 8β, 20-triol; phenylethanal-3-O-(2'-glycerin)-5-O-β-D-glucopyranoside; 3-O-linolenoylglyceryl-6'-O-(α-D-galactopyranosyl)-β-D-galactopyranoside; ethyl rosemarinate.
我们对采自甘肃庄浪的康藏荆芥进行了化学成分的研究,利用层析手段从该植物的甲醇浸膏中分离出二十八个化合物,经化学方法和波谱技术(红外,质谱,一维和二维核磁共振谱)鉴定了二十五个化合物的结构,其中四个为新的化合物,它们分别是:异海松-15-烯-3β,8β,20-三醇;苯乙醇-3-O-(2'-甘油基)-5-O-β-D-吡喃葡萄糖甙;3-O-亚麻酰基甘油-6'-0--β-D-吡喃半乳糖甙;迷迭香酸乙酯。
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Levels of genetic variation at 11 genic loci in Ostrea edulis have been determined by starch gel electrophoresis and compared between natural population from Ireland and hatched population from Wales.
沈琪用淀粉凝胶电泳检测和比较了采自爱尔兰自然群体和威尔士养殖群体的欧洲牡蛎 Ostreaedulis 11个基因位点的遗传变异。
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From two elevation altitude habitats of 3600 m, 2500 m at cold regions were analyzed and compared by means of light and scanning electron microscope using a new embedding method with PEG and Epon-812. Our results indicated that Papaver croceum Ldb.
采自乌鲁木齐河源区海拔3600m、2500m两种海拔高度,采用PEG和Epon-812两次包埋方法,在光学显微镜和扫描电子显微镜下叶片剖面结构进行了观察。
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Two compounds have been isolated from hard coral Porites Compressa Dana,their structures were determined by IR,MS, HNMR, 13CNMR analysis.The two compounds are: batyl alcohol,(2) N-[l--2-hydroxyl--3,7-heptadecadienal]- h exadecanamide.
从采自西沙群岛的扁缩滨珊瑚中的石油醚部分分离出两个化合物,经IR、MS、~1HNMR、~(13)CNMR等波谱方法鉴定,其结构分别为(1)鲨肝醇,(2)N-1-羟基甲基-2-羟基--3,7-十七碳二烯基十六酸酰胺。
- 推荐网络例句
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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.
曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。
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The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.
稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。
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When I was in school, the rabbi explained everythingin the Bible two different ways.
当我上学的时候,老师解释《圣经》用两种不同的方法。