爱思进胶回收说明书
真核表达质粒pcDNA3.1a-FGFR1构建及意义

真核表达质粒pcDNA3.1a-FGFR1构建及意义王笑;严金川;龚杰【摘要】Objective: To construct a recombinant eukaryotic expression plasmid pcDNA3. 1 a-FGFR1 .Methods: The fragnent of FGFR1 was amplificated by PCR, after purification the PCR products of FGFR1 and eukaryotic expression plasmid pcDNA3. 1 a were cut and FGFR1 were inserted into pcDNA3. 1 a,and then transformed into DH5α strain and positive clone was selected. The recombinant plasmid was confirmed by restriction endonuclease analysed and sequencing test. Results: DNA sequencing and restriction endonuclease digestion analysis indicated that the eukaryotic expression plasmid pcDNA3. 1 a-FGFR1 was constructed successfully. Conclusion : Construction of pcDNA3. 1 a-FGFR1 eukaryotic expression plasmid was successful. This study for the next step on angiocardiopathy research laid the experimental foundation.%目的:构建真核表达质粒pcDNA3.1a-FGFR1.方法:通过PCR扩增FGFR1目的片段,双酶切纯化PCR产物及pcDNA3.1a,将扩增的FGFR1基因片段插入pcDNA3.1a线性质粒,即构建成pcDNA3.1a-FGFR1真核表达质粒,将质粒转化感受态DH5α菌株,筛选阳性克隆行双酶切鉴定及测序鉴定.结果:酶切及测序结果表明pcDNA3.1a-FGFR1真核表达质粒构建成功.结论:pcDNA3.1a-FGFR1真核表达质粒构建成功,为下一步对心血管疾病研究奠定了一定的实验基础.【期刊名称】《江苏大学学报(医学版)》【年(卷),期】2011(021)004【总页数】4页(P333-336)【关键词】碱性成纤维细胞生长因子1型受体;pcDNA3.1a载体;真核表达质粒;心血管疾病【作者】王笑;严金川;龚杰【作者单位】江苏大学附属医院心血管内科,江苏,镇江,212001;江苏大学附属医院心血管内科,江苏,镇江,212001;江苏大学附属医院心血管内科,江苏,镇江,212001【正文语种】中文【中图分类】R393成纤维细胞生长因子1型受体(fibroblast growth factor receptor 1,FGFR1)属于酪氨酸激酶受体家族[1],是碱性成纤维细胞生长因子(bFGF)的高亲和性受体,主要通过与配体bFGF结合后作用于血管平滑肌细胞,促进其增生与分化[2]。
爱必达透明万能胶说明书

1、清除待粘表面的灰渍、油脂和水分,被粘物表面需干燥洁净,保证无污渍、铁锈等;
2、光滑物料表面,应砂磨至粗糙,清洁干净后再施涂万能胶;
3、为达到最佳粘合效果,使用前把胶液充分搅拌或将包装桶倒转数次,使胶液混合均匀;
4、涂抹过程中,胶液不能太多也不能太少,在涂抹万能胶涂一薄层即可,并朝同一个方向涂胶。
5、朝同一个方向赶出粘结物中的空气,提高涂胶的均匀度,增强粘接力;
6、涂抹完毕后,晾置一段时间,待溶剂挥发干净,待胶层呈干膜状即可粘合。
以晾置5-20分钟到胶膜刚好不粘手时,对准贴合,用圆辊或橡胶锤由内向外挤压(敲打)排气,一般24小时后可达到实用强度。
电动胶使用说明书

电动胶使用说明书使用说明书一、产品简介电动胶是一种方便快捷的固体胶,可以广泛应用于家居、办公、工艺品等领域。
本说明书旨在向用户介绍电动胶的正确使用方法和注意事项,请认真阅读并遵守本说明书。
二、使用方法1. 准备工作在使用电动胶之前,您需要确保以下几点:- 确认工作区域干净整洁,以确保粘接效果。
- 确保胶水瓶盖顺利打开,无异常情况。
- 准备好所需粘接材料,确保其表面干燥无油脏。
2. 上胶- 将电动胶垂直握在手中,轻轻按压胶瓶,使胶水从胶嘴中流出。
- 在待粘接的物体表面上涂抹均匀的胶水,避免粘度过高导致不易涂布。
3. 粘接- 将需要粘接的物体迅速放置到已涂抹电动胶的表面上。
- 用适当的力道和时间压实粘接,确保胶水均匀分布、完全粘合。
4. 固化- 粘接完毕后,静置片刻,留一定时间待胶水固化。
三、注意事项1. 使用环境- 请在通风良好的环境下使用,避免吸入胶水挥发物。
- 避免阳光直射和高温环境,存放在阴凉干燥处。
2. 安全使用- 请勿将电动胶接触到皮肤、眼睛或口腔,如不慎接触,请立即用清水冲洗,并寻求医疗帮助。
- 避免让儿童接触电动胶,以免发生误食或误伤事件。
3. 储存保养- 请妥善密封胶水瓶盖,避免胶水挥发损失。
- 长时间不使用时,请清理胶嘴,确保胶嘴畅通无堵。
四、常见问题解答1. 电动胶如何清洁?- 未干固化的电动胶可用洗涤剂和清水轻轻搓洗,干固化的电动胶很难清除,请注意使用时避免弄脏周围区域。
2. 电动胶开口堵塞怎么办?- 如电动胶开口堵塞,请用尖细的工具轻轻清理,避免用力过猛刮伤自己。
3. 电动胶可用于哪些材料的粘接?- 电动胶适用于大多数材料的粘接,包括玻璃、塑料、金属、木材等。
五、免责声明本说明书所提供的使用方法和注意事项仅做参考,用户在使用电动胶时应当自行判断风险,并遵守相关安全规范。
任何因电动胶使用不当或违反使用说明而造成的损失,厂商概不负责。
感谢您使用本款电动胶,请按照本说明书正确使用,如有其他疑问,请联系客户服务热线。
爱必达补鞋胶说明书

爱必达补鞋胶说明书
特点:快速、柔软、透明、无白化。
使用方法:
1、使用时,先将两接合物的水份、灰尘清除干燥;并打磨平整、吻合位置
2、用针刺穿瓶嘴,轻轻挤出少量胶水均匀涂布一物表面,快速与另一物面接合贴正,施加压力5~30秒中,即时粘合使用
3、如有粘接不牢固,必须重新分开,除去胶层,重复上述操作注意事项:
1、小心胶水滴入眼睛及溅入口内
2、不准让儿童接触,以免危险
3、注意粘牢皮肤及手指
备注:
本产品为中国胶粘剂工业协会推荐产品,中国知名品牌。
由于现在市场上假冒爱必达的胶水比较多,我们是直接从厂里发货,质量可靠,绝对正品!
净含量:10g
保质期:18个月。
爱比亚斯711胶水说明书

爱比亚斯711胶水说明书
711硅胶处理剂在ABS粘接中应用的比较广泛,加工新产品,ABS 是塑胶中重要的成分之一,在选择对硅胶和塑胶进行粘接时都会选择用电镀、喷漆、喷油等一些方式对硅胶进行处理。
再有就是在使用快干胶粘硅胶和ABS等材质时,需要使用硅胶处理剂活化其表面,而711硅胶处理剂不仅是活化硅胶表面,而且还起到了降低发白率的作用。
711胶水具体使用说明如下:
1、首先需要对待粘接硅胶进行表面的清洁处理剂(使用甲苯或者酒精)。
2、在待粘基材粘接面均匀刷涂711,静置3一5分钟,待其干燥。
3、涂少量瞬间胶水于处理过的基材上,将另一种基材进行粘接。
4、粘接件应当适当给予压力,使其充分粘接后更加牢固。
5、将粘接住的物品静置数分钟即可达到牢固粘接不脱胶的效果。
制备大肠杆菌菌蜕的方法比较

制备大肠杆菌菌蜕的方法比较作者:袁橙郭长明左伟勇郝福星左沁丹蔺辉星来源:《江苏农业学报》2020年第02期摘要:为进一步研究大肠杆菌菌蜕的制备技术,以pBV221、pCold IV和pETDuet1载体为基础构建了表达噬菌体E基因的溶菌质粒,并利用pETDuet1的2个多克隆位点构建了同时表达E基因和金黄色葡萄球菌核酸酶A的双表达溶菌质粒。
经检测,pBV221-E/DH5α组和pCold-E/BL21组的裂解效率最高,但pCold-E/BL21组的裂解起始时间晚于其他几组。
诱导剂的浓度对pETDuet1-E-SNA/BL21(DE3)的裂解效率有较大影响。
电泳结果显示,随着E基因的表达,细菌DNA逸出膜外,同时金黄色葡萄球菌核酸酶A将DNA降解为250 bp以下的小片段。
除pBV221-E/BL21组外,β-丙内酯可实现对其他试验组菌蜕的完全灭活。
电镜观察发现,几组菌蜕在结构上并无明显差别。
与对照菌相比,菌蜕结构完整,电子密度低且不均匀,细胞膜有不同程度的皱缩。
关键词:菌蜕;大肠杆菌;E基因;金黄色葡萄球菌核酸酶A;裂解效率中图分类号:S852.5+2文献标识码:A文章编号:1000-4440(2020)02-0410-07Abstract:In order to further study the preparation technology of bacterial ghosts from Escherichia coli, the bacteriolytic plasmids expressing bacteriophage E gene were constructed based on vectors including pBV221, pCold IV and pETDuet1. Using two polychonal sites of pETDuet1,a double expression plasmid expressing E gene and Staphylococcus aureus nuclease A was constructed. The lysis efficiency of pBV221-E/DH5α group and pCold-E/BL21 group was the highest, but the lysis initiation time of pCold-E/BL21 group was later than other groups. The concentration of inducer had a great influence on the lysis efficiency of pETDuet1-E-SNA/BL21(DE3). Electrophoresis results showed that with the expression of E gene, bacterial DNA escaped from the cell membrane. Meanwhile, Staphylococcus aureus nuclease A degraded DNA to a small fragment below 250 bp. The β-propiolactone could completely inactivate the bacterial ghost of experimental groups expect pBV221-E/BL21 group. Electron microscopic observation indicated that there was no significant difference in the structure of the bacterial ghost among different groups. Compared with Escherichia coli, the electron density of bacterial ghost was lower and uneven, the cell membrane shrank, and the structure was complete.Key words:bacterial ghost;Escherichia coli;gene E;Staphylococcus aureus nuclease A;lysis efficiency1985年,Lubitz等發现噬菌体PhiX174的裂解基因E在革兰氏阴性菌中表达后能使菌体形成跨膜孔道,细胞质及细胞器等从孔道逸出,形成细菌空壳[1],这种细菌空壳被称为菌蜕或菌影。
漆胶修复材料说明书

0 10
EMERGENCY NUMBER: 1-800-424-9300
© 2015 as & Betts. All Rights Reserved.
TA04189 C
Disposal: Dispose of waste and residues in accordance with local authority requirements.
SUPPLEMENTAL INFORMATION:
This product is not known to be a "Hazardous Chemical" as defined by the OSHA Hazard Communication Standard, 29 CFR 1910.1200.
PVC PATCHING COMPOUND overheat (500F max). Apply heat for 2 minutes minimum or at least 1 minute after the surface of the patch has turned glossy. (Material is a glossy liquid that turns flat with initial heat application, and then turns glossy again as heating continues). 4. Area can be allowed to air cool or a water quench may be used.
nitto 509n 可回收双面胶带 技术手册说明书

Copyright © 2020 Nitto Belgium NV . All rights reserved.PRODUCT GROUPPage 1/2TO ADHEREGeneral descriptionNitto repulpable double-coated tape NR-509N consist of a non-woven tissue carrier, saturated with a water-soluble pressure sensitive adhesive.ConstructionCharacteristicsNitto NR-509N has a good adhesion in combination with a high shear resistance, which makes it suitable to adhere on different kinds of paper.The high heat resistance keeps the splice intact during heat set processes.The tape resists humidity for a limited period of time, although it is designed to be water-soluble.For storage, the tape is hermetically sealed in plastic bags, to maintain constant moisture content.Nitto NR-509N passes repulpability test by TAPPI Method UM-213-A.ApplicationNitto NR-509N is suitable for easy and quick overlap splicing operations in paper- and printing industries. The tape can also be used for core start and reel closing.Features- high initial tack to differentpapers- good adhesion on different papers- high temperature resistance - full pH range repulpability - repulpability passes the TAPPIMethod UM-213-A- RoHS compliant (2011/65/EC, 2015/863)- Green water-soluble acrylic adhesive - Non-woven tissue- Green water-soluble acrylic adhesive - P aper release linerREPULPABLE DOUBLE-COATED TAPES*************************Find your local Nitto sales offi ceIf you require additional information on technical properties and application as well as productsampling or testing, please contact your local Nitto sales offi ce.Copyright © 2020 Nitto Belgium NV . All rights reserved.Technical PropertiesGeneral physical properties* Tape thickness = Total thickness without linerDetails from the test methods are described on the customer product specifi cation. CAUTION: The above are typical values and should not be used in writing specifi cations.Performance properties WarrantyThe product is guaranteed to be free from defect in material and workmanship and will be suitable for use for the period as indicated on the packaging, subject to the conditions set out in the product specifi cation.Application guidelines- Keep the tape in its original individual packaging until use.- For optimum results, an even rub down pressure must be applied to the taped area to create the best possible adhesion between tape and the web surface.- Remove the liner prior to splicing.- The tape should be applied to clean and dry surfaces.- The best application conditions are obtained at a temperature between 15 °C and 40 °C.NR-509NREPULPABLE DOUBLE-COATED TAPES Tape thickness*0.100 mm EN 1942Adhesive typeGreen water-soluble acrylic Release liner type/colour Siliconised havana paper Release liner weight 95 g/m²DIN 53104Carrier typeNon-woven tissue Adhesion to test carton 500 cN/20mm EN 1939Release value 20 cN/50mm Nitto Belgium Test Method Static shear0 mm/3hEN 1943Transport and storage conditionsTemperature 15 °C to 30 °C Relative humidity 40 to 75% RHHeat resistance 180 °C 3 min. , 200 g/cm²Repulpability Good Nitto Belgium Test Method (ISO 5263)Adhesion to BA-steel 700 cN/20mm EN 1939Dynamic shear250 N/4cm²Tested after 15 min., 300mm/min.Oozing & Bleeding (1.5T/7days)Minor contaminationNitto Belgium Test Method。
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爱思进胶回收说明书
爱思进胶回收试剂盒的使用说明书如下:
1. 制备琼脂糖凝胶电泳:将PCR产物进行琼脂糖凝胶电泳,根据Marker 判断PCR产物的大小是否符合要求。
2. 切胶:切下包含目的片段的凝胶,尽量切去上下两端的凝胶,以减少非特异性产物的影响。
3. 胶的融化:将切下的凝胶放入一个离心管中,加入适量的胶融化液,使凝胶完全溶解。
4. 洗涤:将凝胶溶液加入一个离心柱中,离心柱的管底会有一个膜,可以吸附凝胶中的DNA片段。
然后加入洗涤液,将离心柱离心,去除残留的胶融化液。
5. 洗脱:加入适量的洗脱液,离心柱离心,将DNA从膜上洗脱下来。
6. 检测:取洗脱液进行电泳检测,观察电泳结果是否包含目的片段。
以上是爱思进胶回收试剂盒的使用说明书的大致步骤,由于不同版本的产品可能存在差异,因此建议在使用前仔细阅读说明书或咨询专业人士。