查询词典 extraction

The extraction medicament used in extraction is mostly flammable, volatile and harmful to human body and the society.

其中萃取法所采用的萃取剂大多是易燃、易挥发而且对人体和社会都具有危害性。

Objective:To study the extraction in the processes of Weitongliying Soft Capsule after extracted by Supercritical carbon dioxide fluid.Methods:The most appropriate technology was screened based on the comparative study among the technology of ethanol circumfluence,ultrasonic extraction,water warm immersion and water decoction,with the concentration of menstruum, volume and extracting time as the evaluating factors,on the basis of orthogonal design.

目的：研究胃痛立应软胶囊制备中二氧化碳超临界流体（SFECO2）萃取后药材的提取工艺方法：对比乙醇回流、温浸、超声及水煎等提取工艺，以溶媒浓度、用量、提取时间研究因素，经正交设计进行提取工艺条件的优选。

The microwave-assisted extraction and Florisil solid phase extraction conditions were optimized. Under the optimum condition, the recoveries of 18 organochlorine pesticides (α-HCH,β-HCH,γ-HCH,δ-HCH, heptachlor, aldrin, heptachlor epoxide, endosulfan Ⅰ, p, p'-DDE, dieldrin, endrin, endosulfan Ⅱ, p, p'-DDD, o, p'-DDT, endrin aldehyde, endosulfan sulfate, p, p'-DDT, methoxychlor) were

优化了微波萃取和固相萃取柱净化条件，在最优条件下18种有机氯农药（α-HCH、β-HCH、γ-HCH、δ-HCH、七氯、艾氏剂、环氧七氯、硫丹Ⅰ、p，p'-DDE、狄氏剂、异狄氏剂、硫丹Ⅱ、p，p'-DDD、o，p'-DDT、狄氏剂、异狄氏剂醛、硫丹硫酸酯、p，p'-DDT、甲氧滴滴涕）的回收率在

Feature Extraction of modulated signal is a important step in modulation identification algorithm based on feature extraction.

在基于特征提取的调制识别算法中，对调制信号特征的提取是其中一个重要的环节。

Borneol and muscone were extracted with a solid-phase extraction procedure and were simultaneously measured with GC-MS method after a solid-phase extraction procedure.

建立通栓醒脑注射液中冰片和麝香酮含量的测定方法。

The conclusions were as follows: theνO-H andνC=O IR absorption maxima shifted towards higher wave numbers after imprinting 17β-estradiol on TFMAA-co-TRIM copolymer with the red shift of theνO-H groups being apparent after precipitation polymerization for 16h while that forνC=O groups being observed after polymerization for 24h. A strong interaction between TFMAA and 17β-estradiol was confirmed by the high selectivity for 17β-estradiol, as indicted by the values of the separation factor of isomers of 17β-estradiol/17α-estradiol (2.28) and the imprinted factor (3.01). Particle diameter of TFMAA-co-TRIM polymer was between 300 nm and 1.5μm, which suited well for solid phase sorbent throughout at low column pressure. The recognition of imprinting TFMAA-co-TRIM polymer for sterol molecules was driven by enthalpy eluted with acetronitile, and low temperature was in favor of the separation of sterol structure analogues on imprinting column. TFMAA-co-TRIM polymer possessed of determinate anti-heat stability, with melting point beginning at 255.84℃, Tp=257.40℃, control TFMAA-co-TRIM polymer and imprinting TFMAA-co-TRIM polymer were respectively decompounded at 267.79℃and 343.11℃, and solid micro-extraction noddle prepared by the special polymerization also showed definite recognition for 17β-estradiol by GC/MS detecting at 270℃. By selection of various washing and elution solvents, elution reagents of close polymerization system were of more advantage in template molecules retention and recognition on molecularly imprinted solid phase extraction column. At a certain extent, progesterone, 17α-estradiol, 17β-estradiol and 4-androstene-3, 17-dione could be intercepted on the MISPE column. Especially, MISPE had high selectivity for progesterone, and imprinting TFMAA-co-TRIM polymer could achieve adsorption balance within 50 min by absorption kinetics test for 17β-estradiol. However, MISPE column showed better selectivity and enrichment property for 17β-estradiol than C18 and CSPE columns according to the data from HPLC and GC/MS analyses. Recovery of 17β-estradiol on MISPE column was up to 85.5% while when prime extracting solution of milk powder was sampled, the recovery of CSPE and C18 columns were 43.7% and 30.7%, respectively.

通过研究阐明：紫外聚合产物TFMAA-co-TRIM中的νO-H振动吸收峰在聚合16h后红移，νC=O振动吸收峰在聚合24h后红移；TFMAA-co-TRIM对雌二醇异构体的印迹因子达到了3.01，α为2.28，优于其它功能单体参与得到的聚合物识别特性；TFMAA-co-TRIM聚合物粒径介于300 nm至1.5μm之间，作为色谱固定相具有良好的通量和低的柱压；在乙腈流动相中，TFMAA-co-TRIM分子印迹固定相的分离过程主要被焓驱动，低温有利于分子印迹固定相分离甾醇结构类似物；TFMAA-co-TRIM分子印迹聚合物在255.84℃时开始熔融，Tp=257.40℃，聚合物CP的降解温度在267.79℃，MIP降解温度在343.11℃，制备的固相微萃取头初步经GC/MS 270℃的耐热性测定；不同的洗提溶剂筛选证明了选择接近聚合溶剂的洗脱体系更有利于MISPE发挥识别效应；分子印迹固相萃取柱对孕酮、17α-雌二醇、17β-雌二醇和雄烯二酮都具有不同程度的保留特性，可作为此类化合物的吸附材料，特别对孕酮强保留的富集特性，可作为孕酮的选择性识别吸附剂，其分子印迹聚合物对17β-雌二醇的吸附动力学测定显示在50 min内基本达到吸附平衡，具有作为传感器核心敏感材料的潜力；对比萃取奶粉中17β-雌二醇性能，MISPE柱比非分子印迹固相萃取柱和C18柱具有更高的保留，回收率依次为85.5%，43.7%和30.7%。

Best extraction craft of Cinnamon oleoresin by microwave extraction technology was studied through single factor and orthogonal experiment.

应用微波提取技术，通过单因素和正交试验，选择提取肉桂油树脂的最佳工艺。

Extraction of the essential oil and oleoresin from garlic with supercritical carbon dioxide was studied. The effects of grind degrees, pressur e, temperature and time on extraction efficiencies were investigated.

研究了大蒜精油及油树脂的超临界CO2提取工艺，探讨了粒度，萃取及分离的温度、压力和时间对各萃取率的影响，建立了萃取温度、压力与各萃取率的数学模型。

The extraction methods of Quaternary pollen and spores are the bases and precondition in Quaternary Palynology. Northern China is in particular physical geography environment. In Quaternary there are many different types of sediments in northern China. And at all times extraction methods of Quaternary pollen and spores from different type of sediments are the difficulties and highlights in North China.

孢粉提取方法是第四纪孢粉学研究的基础和前提，中国北方地区具有独特的自然地理条件，第四纪以来形成了特有的沉积物类型，不同沉积物的孢粉提取研究一直以来是中国孢粉学研究的难点和热点。

Taking the contents of Paeoniflorin, Flavonoids of Glycyrrhiza, n-butanol extraction and amount of dry extract cream as the evaluation indexes, the procedure of extraction, purification, concentration and dryness of Paeony, Glycyrrhiza and pawpaw was studied with orthogonal test and mono-factorial test.

分别以芍药苷含量、甘草总黄酮含量、正丁醇浸出物含量和固形物收率为评价指标，通过单因素试验和正交试验，筛选出白芍、甘草和木瓜的提取、纯化、浓缩和干燥工艺。

Faith is the starting point of all accumulation of riches!

信念是所有的财富积累的起点。

Stock market will run fora time but this is limited time to play this game.

股市运行有一段时间，但是这是有限的时间玩这个游戏。