查询词典 methanal

The better technology has been obtained: taking water-EG as solvent 2-imidazolidinone was prepared. The molar ratio of the methanal (36%) to the formic acid (85%) is 1:2.8, reaction temperature is 95~100℃, reaction time is 16 h, taking cuprous chloride and triethylamine as catalyst, the molar ratio of the cuprous chloride and triethylamin to 2-imidazolidinone is 1.0% while 1,3-DMI was prepared.

较佳工艺条件为：制备2-咪唑啉酮时，以水－乙二醇混合作溶剂；制备1，3-DMI时，甲醛(36%)：甲酸(85%)摩尔比为1：2.8，反应温度95~100℃，反应时间16 h，氯化亚铜和三乙胺作催化剂，用量分别是2-咪唑啉酮摩尔数的1.0%。

The synthesizing process and processing condition of the high water absorbent resin are reported in this paper,in which waste acrylon wool was hydrolyzed in ordinary pressure and methanal is used as crosslinker.

报道了将废旧腈纶毛线用常压碱法水解，甲醛作交联剂制备高吸水性树脂的工艺过程，确定了水解反应工艺条件：投料比例 m PAN∶ m Na OH∶ m H2 O=1∶ 0 。6∶ 8，水解反应温度 95～ 10 0℃，时间 7h。

Methods Twenty-two adult cadaver heads fixed in 10% methanal were dissected under the operating microscope.Red latex was injected into the artery and blue latex into vein.

方法用10%甲醛固定的成人头颅湿标本22例，分别在动脉系统与静脉系统中灌注红、蓝乳胶铸型，在手术显微镜下观察海绵窦及其相邻结构。

Create the model with sick sinus syndrome by external application of 20% methanal on the sino-atrial node. Observe the changes of heart rate and electro-physiological index of sinoatrial node.

用20%甲醛液外敷窦房结区制作病态窦房结综合征模型，观察参仙升脉液十二指肠给药对家兔病窦模型的心率和窦房结电生理指标的变化。

The statistical comparison was used chi-square test between the methanal or hydrochloric acid abdominal cavity injection method and Galili's method.

结果 大鼠在腹腔注射1%甲醛与0.5%盐酸后均100%发生肠粘连，注射0.5%甲醛的大鼠肠粘连的发生率为87.5%，且0.5%盐酸，1%甲醛，0.5%甲醛腹腔注射法与Galili法相比，差异无显著性。

Methods Using the object's surface sterilization test to simulate the field experiment,and detect the deactivation effects of the methanal ultrasonic nebulization sterilizer on poliovirus-contaminated glass slides.

方法通过物表消毒模拟现场试验，检测甲醛超声雾化消毒器对污染于玻璃载体表面的脊髓灰质炎病毒灭活效果。

Prussian blue staining revealed more than 98% of BM-MNCs were labeled by Feridex and BM-MNCs appeared to be unaffected by magnetically labeling. Three dogs injected Feridex- BM-MNCs were visualized at one week by MRI, but none of unlabeled BM-MNCs were seen. All lesions that were detected within one week could not be visualized over four week. The dot injected Feridex-cells which fixated by 4 % methanal also was seen at one week by MRI, but the signal disappeared at two week.

普鲁士蓝染色显示体外Feridex标记BM-MNCs成功率达98%以上，而且细胞活性不受影响；其中3只实验犬标记细胞移植区1周内可用1.5T磁共振仪3DSSFP序列在体扫描到T2低信号影像，4周时该低信号消失；同样条件下经甲醛固定的标记细胞在1周时也可检测到T2低信号，但2周时该低信号消失；未标记细胞移植区没有检测到低信号。

After sodium bisulfite reacted with methanal at 60-65℃ for 0.5h, aniline was dripped into the system to synthesize phenylaminomethyl-sodium sulfonate subsequently, the diazol solution of p-nitroaniline was dripped into phenylaminomethyl-sodium sulfonate synthesized to form 4'-nitro-4-aminoazobenzene. The compound was then added into diazol solution of p-chloroaniline to obtain the object product, which was identified by IR spectrum and element analysis.

在60~65℃温度下，亚硫酸氢钠与甲醛反应半小时之后滴入苯胺生成苯胺基甲基磺酸钠，另将硝基苯胺重氮化得到重氮盐溶液滴入苯胺基甲基磺酸钠中得到4'-硝基-4-氮基偶氮苯，然后将其滴入氯苯胺重氮化后的重氮盐溶液中，得经红外光谱检验和元素分析证实的目标产物。

The optimun technological conditions were studied on the synthesis of 9-flourenylmethanal by the reaction of flouren and ethyl formate , and the synthesis of 9-flourenylmethanol by the reaction of 9-flourenylmethanal and methanal with sodium ethylate as catalyst.

研究了乙醇钠为催化剂，由芴与甲酸乙酯合成芴甲醛，再由芴甲醛与甲醛合成苯甲醇的工艺条件，结果表明：合成芴甲醛时，当芴为 16g时，催化剂乙醇钠 4 。5g ，甲酸乙酯 66ml，反应时间为 36h ，收率 75 %：合成芴甲醇时，当芴甲醛为 19g时，甲醛 7.0ml，10 %NaOH溶液 70ml，反应时间 2 。0h ，收率：63

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。