On the basis of twin-roll thin strip continuous casting experiments and solidification structure characteristic analysis of thin strip and combining with the simulation results of effects of technological parameters, the forming mechanism of solidification structure zone (especially equiaxed crystal zone) on 1Crl8Ni9Ti stainless steel twin-roll thin strip was investigated.

在雙輥薄帶連鑄實(shí)驗(yàn)和薄帶凝固組織特征分析的基礎(chǔ)上黄页三级，結(jié)合對(duì)薄帶凝固組織區(qū)的模擬預(yù)測(cè)結(jié)果欧美人做一级视频，研究了1Cr18Ni9Ti不銹鋼雙輥薄帶凝固組織區(qū)的形成機(jī)理国内外激情在线视频频。結(jié)果表明：1Cr18Ni9Ti不銹鋼雙輥薄帶凝固組織中的等軸晶區(qū)不但在凝固類(lèi)型為半固態(tài)時(shí)形成玖玖爱在线视频免费观看，在軋制或理想型時(shí)也能形成。其形成機(jī)理為日韩真人一级黄色视频，熔池中懸浮游離晶體的沉積国产一本大道香蕉在线视频、聚集以及在枝晶生長(zhǎng)前沿的長(zhǎng)大和薄帶離開(kāi)二鑄輥?zhàn)钚￠g隙后，薄帶/空氣界面換熱系數(shù)驟然降低抑制了柱狀枝品的生長(zhǎng)伊人久久大香焦，并促使薄帶中部未凝固熔體中游離晶體的擇優(yōu)長(zhǎng)大

Crystallized sulfuric salt of SAM was obtained by centrifuging the precipitant at 3000 rpm after adding six times the volume of absolute methanol to the decolorant liquid with a final step of freezing evaporation.

確定了分離純化SAM的最優(yōu)條件是：在pH值5.0時(shí)狼友视频在线观看2019高清，含SAM濃度為3.0 g/L的上柱液，以6 L/h的流速久久99国产高清丝袜免费费，過(guò)裝填D152樹(shù)脂的離子交換柱(φ50 mm×1500 mm)后以去離子水和醋酸洗脫除雜久久久久囯产，再用9 L到15 L濃度為50 mmol/L的硫酸以6 L/h的流速洗脫，可以分離得到純度較高的SAM粗品国产女性黄色在线播放完整。

Through four steps of column chromatography and electrophoresis purification, one kind of nuclease was obtained.

樣品依次通過(guò)四步柱層析亚洲欧美另类精品一区，PAGE-DNA功能膠純化得到電泳純的雙胸蚓核酸酶樣蛋白質(zhì)純品，命名為DNase Ewww.86se.com。2黄视频毛片。

The process of decreasing the acid value of the booster pellets used semifinished PETN was studied by the exploring test in lab, the mini test and the medium test on the production line.

對(duì)傳爆藥柱用粗品太安降低酸值進(jìn)行了試驗(yàn)室摸索試驗(yàn)、生產(chǎn)線(xiàn)小型和中型試驗(yàn)色女综合网色。

There is no significant difference among the determining results of DNP-Tween, GDX-102 and ODPN column when they were used to analyze severalsamples, but there is significant difference between ODPN column and magenta sulfurous acid colorimetric analysis and the result of the latter is higher than that of the former.

對(duì)多種樣品進(jìn)行測(cè)定91se.av，其測(cè)定結(jié)果與GDX-102柱、DNP-Tween柱相比欧美日韩国产黄，差異不顯著影音先锋最新网址，而與品紅亞硫酸比色法比，差異顯著亚洲乱伦视频网站，品紅亞硫酸比色法測(cè)定結(jié)果偏高99操的在线视频。

Reverse-phase chromatography was employed for chiral separation of tropine acid enantiomers on the cellulose tribenzoate chiral stationary phases coated on a small-particle spherical silica support in an eluant system consisting of a mixture of alcohol and water.

摘 要：以乙醇-水流動(dòng)相又大又长又深又粗的操逼视频，用纖維素-三作為手性固定相對(duì)外消旋體托品酸進(jìn)行了高效液相色譜手性分離考察了不同比例的乙醇-水流動(dòng)相、不同流速以及用不同醇類(lèi)酯化對(duì)托品酸酯在手性色譜柱上的色譜行為国产一级视频69欧美一级。

OBJECTIVE To determine the relative and absolute molecular weight of working reference substance of Grifolafrondosa beta-Glucan and compare the two analysis methods.

目的測(cè)定灰樹(shù)花倍他葡聚糖工作對(duì)照品的相對(duì)及絕對(duì)分子質(zhì)量欧美视频射，并對(duì)兩種分析方法進(jìn)行比較。方法色譜柱為T(mén)SK-G4000PW久久丝袜美腿国产精品，流動(dòng)相為0.7%硫酸鈉(含0.02%疊氮化鈉)或0.2%疊氮化鈉溶液啊啊啊啊轻点肉，流速為0.5 mL.min-1，柱溫為35℃国产AV高清国片精品，高效凝膠滲透色譜法用示差折光檢測(cè)器在线观看色污网站，高效凝膠滲透色譜和激光光散射聯(lián)用法用DNDC儀和激光光散射儀聯(lián)用。

Nepalensis wall polysaccharide was prepared with hot water extraction,ethanol precipitation,dialyzation,and lyophilization.the crude polysaccharide was separated by deae-cellulose chromatography and purified by sephadex g-200 chromatography.the inhibit effect of the polysaccharide on lipid peroxidation of mice liver was conducted by tba method.the model of liver-injury induced by carbon tetrachloride（ccl4was used to validate the variety of the realated ast.results onefold ingredient polysaccharide was obtained after isolated and purified.conclusion the ingredient can remarkably inhibit lipid peroxidation of rat liver and significantly reduce activity of ast.

用熱水提取精品国产一区二区三区91在线，乙醇沉淀提取粗多糖，再經(jīng)sevag法去除蛋白国产欧美日韩区一区二，透析去除小分子物質(zhì)成年无码动漫AV片在线观看不卡，冷凍干燥得楮頭紅多糖粗品；采用deae-52纖維素柱層析和sephadex g-200凝膠柱層析進(jìn)行分離純化午夜性一级视频；用tba法考察多糖的抗脂質(zhì)過(guò)氧化作用国产孕妇一级A片免费观看；采用ccl4急性肝損傷模型，測(cè)定其血清中ast變化99久久免费精品视香蕉蕉。結(jié)論獲得一個(gè)楮頭紅多糖組分久久国产热热。tba法表明該組分對(duì)小鼠自發(fā)性脂質(zhì)過(guò)氧化具有顯著的抑制作用；在保肝試驗(yàn)中免费黄网址，給藥組能明顯抑制ast的升高国内偷拍专区，對(duì)肝損傷有一定的保護(hù)作用。

Methods by using a broad pH range column(Gemini NX C18,4.6mm×150mm,5μm),basic mobile phase which was[H_2O-ammonia-glacial acetic acid] (96:3.6:0.4)-methanol,the related substances in etimicinsulfate were separated and detected by electrospray ionization and positive ion monitoring,the ESI ion source condition was following: temperature is 350℃,nebulizing pressure is 50 psi,dry gas flow is 10 L /min.some related substances in etimicinsulfate were identified by comparing the retention time in chromatography,~+ spectrum and MS~2 spectrum with reference substances\',the others which haven\'t reference substances were identified or speculated by analyzing their MS~2 fragmentation with the help of a rule summarized from the MS~2 fragmentation of gentamicin C1a,micronomicin and etimicin.Results nineteen related substances in etimicinsulfate were separated and detected.

方法利用寬pH范圍的Gemini NX C18(4.6mm×150mm欧美天天堂在线a一欧，5μm)色譜柱在线观看国产理论播放网站免费视频，在堿性條件下，以[水-氨水-冰醋酸(96：3.6：0.4)]-甲醇(70：30)為流動(dòng)相aa片黄色视频，直接分離各組分亚洲特级黄a；并用HPLC-ESI-MS~2檢測(cè)樣品中各組分，質(zhì)譜條件：ESI離子源久久久久精品高级产三级，離子源溫度350□无码精品A∨在线观看中文免费，霧化室壓力50 psi，干燥氣流速10 L/min久久精品视频这里，正離子檢測(cè)方式成年人小视频在线观看免费；對(duì)有對(duì)照品的有關(guān)物質(zhì)采用比對(duì)有關(guān)物質(zhì)與對(duì)照品的色譜保留時(shí)間、準(zhǔn)分子離子的質(zhì)荷比及二級(jí)質(zhì)譜方法進(jìn)行鑒定亚洲黄色视频三区，無(wú)對(duì)照品的有關(guān)物質(zhì)一级欧洲性爱视频，則是先通過(guò)解析慶大霉素Cla来个毛片网站、小諾霉素、依替米星的二級(jí)質(zhì)譜日本三级片久久，對(duì)該類(lèi)化合物的二級(jí)質(zhì)譜裂解規(guī)律進(jìn)行歸納6080yy午夜三级中文在线，并以此推測(cè)未知新化合物進(jìn)行結(jié)構(gòu)，再用推測(cè)的結(jié)構(gòu)對(duì)二級(jí)質(zhì)譜進(jìn)行解析男人深夜天堂网站男人玩游戏女子想要，如所有的碎片離子均合理解釋?zhuān)砻魍茰y(cè)合理欧美日韩国产一区。

The company features complete product specifications and produces high quality products including silica gels, rubber footpads, LED separation columns, PC board parts, fixed holders, protection parts, terminals and insert-pull pieces etc.

公司產(chǎn)品規(guī)格齊全，主要有各種高品質(zhì)的硅膠精品亚洲黄色视频在线观看、橡膠腳墊免费观看国产裸体美女网站、LED間隔柱、PC板部品p怕怕免费网站、固定座99久久精品无码专区、保護(hù)部品、端子91干屄、接插件等產(chǎn)品亚州黄色一级无码；其產(chǎn)品廣泛應(yīng)用于電子電腦、自動(dòng)化設(shè)備及通訊xxxxx在线性爱视频、家用電器等国产视频精神一区。