masslynx学习材料

海藻糖二十碳五烯酸酯的合成与表面性能摘要：海藻糖二十碳五烯酸酯是以二十碳五烯酸乙酯和海藻糖为底物，利用微生物脂肪酶在叔丁醇中通过脂基转换合成的。

反相高效液相色谱法加上二极管阵列检测和电喷雾质谱（RPHPLC-DAD-ESI-MS）分析表明，该反应混合物中存在单酯和二酯。

采用硅胶柱色谱法预处理反应混合物，然后再用高效液相色谱法洗脱海藻糖二十碳五烯酸酯，进一步纯化。

通过ESI-MS和核磁共振（NMR）对该化合物的结构进行表征。

证实，单酯为6-O-海藻糖二十碳五烯酸单酯。

接着，我们将海藻糖二十碳五烯酸酯的表面性能进行了研究。

结果显示表面张力，γcmc 和△G o mic随着温度的升高降低，但是每个分子占据的面积略有增加。

关键词：海藻糖二十碳五烯酸酯、酯基转移反应、分离纯化、结构鉴定、表面特性介绍膳食长链脂肪酸的二十碳五烯酸（EPA，20：5n- 3）属于n-3不饱和脂肪酸（多不饱和脂肪酸），其具有多种生物活性，并有生理功能[1,2]。

一些研究表明，它可用于预防和治疗心血管疾病[3-5]。

Stulnig[6]和Li[7]报道表明EPA可以从膜筏置换酰基化蛋白质，从而调节免疫应答。

EPA也可以在各种炎症的治疗临床应用作为辅助免疫抑制剂。

西田[8]提供的研究表明，EPA可能对H2O2氧化损伤起到内源性保护作用。

Mori [9]也显示EPA可降低体内氧化应激。

哈德曼[10]发现，EPA 可以增加抗癌药物的有效性。

巴布科克[11]报道，EPA补充剂可以促进保持体重和抑制肿瘤发展。

此外，一些文章也显示出n- 3脂肪酸可以对人类癌症治疗有帮助[12-14]。

EPA也作为预防医学治疗的推荐措施。

乙基二十碳五烯酸的酯已经被用于在动脉硬化性闭塞症，高血脂的治疗[15]。

然而，EPA是不稳定的，很容易在暴露于氧或活性氧中被氧化成脂质自由基或脂质过氧自由基。

虽然，在PUFA的主体相氧化已经研究充分，也有一些研究表明该多不饱和脂肪酸的在主体相的氧化稳定性从水性体系中[16,17]显著不同，Endo等人的报道称甘油三酯的氧化含有二十碳五烯酸和二十二碳六酸取决于氧化系统和甘油三酯结构。

simulationx 精解与实例摘要：一、simulationx 简介1.软件背景2.应用领域二、simulationx 精解1.功能模块解析2.技术特点三、simulationx 实例分析1.实例一：电磁场仿真2.实例二：电路仿真3.实例三：热力学仿真四、实战操作技巧与注意事项1.建模技巧2.仿真设置3.结果分析五、simulationx 在工程中的应用1.工业领域2.科研领域六、未来发展趋势与展望1.技术创新2.市场前景正文：一、simulationx 简介simulationx 是一款强大的仿真软件，起源于德国，应用于各个领域，如电磁场、电路、热力学等。

在我国，该软件被广泛应用于工程设计和科研领域，为工程师和研究人员提供了便捷的仿真分析工具。

1.软件背景simulationx 的开发始于20世纪90年代，经过多年的发展，现已成为国际上知名度较高的仿真软件。

其精度和可靠性得到了业界的广泛认可，成为许多工程师和研究人员的首选工具。

2.应用领域simulationx 适用于多种领域，如电气、机械、电子、热力学、流体等。

通过仿真分析，可以帮助工程师提前预测产品性能，优化设计方案，降低研发成本。

二、simulationx 精解1.功能模块解析simulationx 包含多个功能模块，如几何建模、网格划分、物理场仿真、求解器设置等。

这些模块可以帮助用户快速搭建模型，进行各种类型的仿真分析。

2.技术特点simulationx 具有以下技术特点：（1）高精度求解器：采用先进的求解算法，确保仿真结果的准确性。

（2）多种物理场仿真：支持多种物理场的耦合仿真，如电磁场与机械结构的耦合、电路与热场的耦合等。

（3）智能网格技术：自动适应复杂几何模型的网格划分，提高仿真精度。

（4）丰富的后处理功能：便于用户对仿真结果进行分析和可视化。

三、simulationx 实例分析1.实例一：电磁场仿真某电机产品在设计阶段，通过simulationx 进行电磁场仿真，预测电机运行时的磁场分布和电磁力。

5740AH - 40 Ton Air/Hydraulic Shop Press 5750AH - 50 Ton Air/Hydraulic Shop PressCONTENTS:Page 1Specifications2Safety Information and Warranty Information 3Parts List4-6Assembly Instructions789Pump and Ram Assembly Instructions Procedure for Bleeding Air Pump Instructions10-11Winch Kit Parts List and Winch Installation Instructions 12Replacement Parts List© Copyright 2020, Sunex Tools ®SAFETY INFORMATIONThis symbol alerts you to the possibility of serious injury or death if instructions are not followed.This symbol alerts you to the possibility of damage to or destruction of equipment if instructions are not followed.Failure to heed these warnings may result in lossof load, damage to the press and/or failure resulting in property damage, personal or fatal injury. Thisoperating manual contains important details concern-ing the safe operation of this tool. The user must read and understand these details before any use of the tool. This manual must be retained for future reference.• Read, study, understand and follow all instructions before operating this press.• Always wear safety goggles, (users and bystanders).•Parts being pressed may splinter, shatter, or be ejected from the press at a dangerous rate of speed. Because there are a variety of press applications, it is the responsibility of the press owner to provide adequate guards, eye protection and protective clothing to the press operator.• Visual inspection of the press should be made before use, checking for signs of cracked welds, bent bed pins, loose or missing bolts, leaks, or any other structural damage. Corrections must be made before using the press.•Do not go near leaks. High pressure hydraulic uid can puncture skin and cause serious injury,gangrene, or death. If injured, seek emergency medical help as immediate surgery is required to remove the uid.• Prior to use make sure the press is securely anchored to a concrete oor.•Keep hands, arms, feet, and legs out of work area. Accidental slippage can result in personal injury.• Always use an accurate force gauge to measure pressing force.• Do not exceed the rated capacity or tamper with the pressure/force settings. When attachments and adapters are used the rated capacity of the system shall be no greater than the rated capacity of the lowest rated component or combination of components that make up the system. • Avoid off-center loads. Offset loads can damage ram and may cause load to eject at a dangerous rate of speed. Do not use any spacer or extender between the press ram plunger and the item being pressed. If there is not enough ram stroke, adjust the height of the movable bolster.•Remove all loads from movable bolster before attempting to adjust bolster height. Beware of possible falling bolster.•Press only on loads supported by movable bolster and press plates included. Do not support loads on oor or press frame legs.• When using any accessories such as press plates or arbor plates, be certain they are centered on the movable bolster and in full contact with both sides of the bolster.• Before applying load, be certain all movable bolster supporting pins are fully engaged. Verify lift cables (if equipped) are slack before pressing on the bolster.• Always use a bearing shield when pressing bearings.•Use caution when positioning work to be pressed to ensure the item to be pressed cannot be ejected at a dangerous rate of speed.• Release hydraulic pressure before loosening any ttings.• Maintain proper hydraulic uid levels.• Do not make any alterations or modi cations to the press.•This product may contain one or more chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands thoroughly after handling.•Failure to heed and understand these markings may result in serious or fatal personal injury and/or property damage.OWNER/USER RESPONSIBILITYThe owner and/or user must have an understanding of the manufacturer'soperating instructions and warnings before using this press. Personnel involvedin the use and operation of equipment shall be careful, competent, trained,and quali ed in the safe operation of the equipment and its proper use whenservicing motor vehicles and their components. Warning information shouldbe emphasized and understood.If the operator is not uent in English, the manufacturer's instructions andwarnings shall be read to and discussed with the operator in the operator'snative language by the purchaser/owner, making sure that the operatorcomprehends its contents.Owner and/or user must study and maintain for future reference the manufactur-er’s instructions. Owner and/or user is responsible for keeping all warning labels and instruction manuals legible and intact. Replacement labels and literature are available from the manufacturers.INSPECTIONVisual inspection of the shop press should be made before each use of the press, checking for damaged, loose or missing parts. Each press must be inspected by a manufacturer’s repair facility immediately, if subjected to an abnormal load or shock. Any press which appears to be damaged in any way, is found to be badly worn, or operates abnormally must be removed fromservice until necessary repairs are made by a manufacturers's authorized repair facility. It is recommended that an annual inspection of the press be made by a manufacturer’s authorized repair facility and that any defective parts, decals or warning labels be replaced with manufacturer’s speci ed parts. A list of authorized repair facilities is available from the manufacturer.SAFETY INSTRUCTIONS•CHECK YOUR LOCAL, STATE AND FEDERAL REGULATIONSREGARDING THE SAFE USE OF THIS EQUIPMENT.•Your safety is top priority. Please handle equipment with care.•Fully retract unit and remove all items from the press bed frame.•Support the press bed, and remove the pins.•Raise or lower bed to desired height and reinstall press pins. Be certainpins are fully engaged in the parallel anges of the upright columns.•Position press on a at, level, hard surface, preferably concrete.Make sure all nuts and bolts are tight.•Clear the area of bystanders, especially small children, before using.•Set the press bed to the required height. The press is most effectivewhen the work piece is located 1 inch below the ram’s retracted position.The compression stroke can include the entire 5 inch working range.•The press is designed to exert a force on anything which is positionedbeneath its ram. The work piece can pop out from under the ram at a high rate of speed and injure someone.•Pressing Bearings: It is essential that you use the bearing shield whenpressing bearings on or off.LIMITED WARRANTY:SUNEX INTERNATIONAL, INC. WARRANTS TO ITS CUSTOMERS THAT THE COMPANY’S SUNEX TOOLS ® BRANDED PRODUCTS ARE FREE FROM DEFECTS IN WORKMANSHIP AND MATERIALS.Sunex International, Inc. will repair or replace its Sunex T ools ® branded products which fail to give satisfactory service due to defective workmanship or materials, based upon the terms and conditions of the following described warranty plans attributed to that speci c product. This product carries a ONE-YEAR warranty. During this warranty period, Sunex T ools ® will repair or replace at our option any part or unit which proves to be defective in material or workmanship. Other important warranty information....This warranty does not cover damage to equipment or tools arising fromalteration, abuse, misuse, damage and does not cover any repairs or replace-ment made by anyone other than Sunex Tools ® or its authorized warranty service centers. The foregoing obligation is Sunex Tools ®’ sole liability under this or any implied warranty and under no circumstances shall we be liable for any incidental or consequential damages. Note: Some states do not allow the exclusion or limitation of incidental or consequential damages, so the abovelimitation or exclusion may not apply to you. Return equipment or parts to Sunex Tools ®, transportation prepaid. Be certain to include your name and address, evidence of the purchase date, and description of the suspected defect.If you have any questions about warranty service, please write to Sunex Tools ®.This warranty gives you speci c legal rights and you may also have other rightswhich vary from state to state. Repair kits and replacement parts are available for many of Sunex Tools ® products regardless of whether or not the product is still covered by a warranty plan.SHIPPING ADDRESS: MAILING ADDRESS:Sunex Tools Sunex Tools 315 Hawkins Rd. P .O. Box 4215Travelers Rest, South Carolina 29690 Greenville, South Carolina 29608THIS OPERATING MANUAL CONTAINS IMPORTANT SAFETY INFORMATION. READ CAREFULLY AND UNDERSTAND ALL INFORMATION BEFORE OPERATING THIS TOOL. SAVE THIS MANUAL FOR FUTURE USE.WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm.For more information go to .Press Frame - 1Press Bed - 1Press Feet - 2Z Bar - 11/2"-13 x 1-1/2" Hex Head Bolts - 101/2" Nuts - 10Air MotorPump and Ram - 1Pump Extension Handle - 11" x 3" x 14"Press Plates - 2Accessory only -Not needed for assemblyPushing Adapter - 1Accessory only -Not needed for assemblyBearing Shield - 1Accessory only -Not needed for assemblyESTIMATED ASSEMBLY TIME: 30 MINUTESACCESSORIESASSEMBL CONTINUEDPUMP AND RAM ASSEMBL Y INSTRUCTIONSPROCEDURE FOR BLEEDING AIRPUMP INSTRUCTIONSWINCH INSTALLATION INSTRUCTIONS CONTINUED。