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BEXCO has been instrumental in successfully implementing heavy lift projects for major offshore contractors with its custom-made solutions, which are built to match the toughest environments and conditions where our customers operate.The company offers a range of purpose-built, heavy lift and installation sling ropes in HMPE, produced at the BEXCO manufacturing plant in Hamme, Belgium and at its load-out quayside facility in Antwerp.With its modern R&D equipment, BEXCO is able to design, test and then produce customized slings for engineered lifts, meeting all complex loading and handling requirements for specific lifting projects. Attention to detail in approval procedures, documentation and administration are given equal importance, with the BEXCO project team committed to supporting the project follow-up from day one. From tender through production and deployment right until final delivery and maintenance, BEXCO offers personal contactand advice from one of our expert BEXCO engineers for every step of the way.OFFSHORE HEAVY LIFTINGSmulders is an international steel construction company with offices in Belgium, the Netherlands, Poland and the United Kingdom. Smulders specializes in metal constructions for the oil and gas industry and wind energy sector.Smulders uses BEXCO’s FLEXOR slings for the lifting of windmill components in their factory in Hoboken, Belgium.Bert De Vos, Smulders Purchasing Manager “BEXCO’s soft slings are, for the same break strengths, considerably thinner and lighter in comparison with the slings we used in the past, making them so much easier to handle. We choose our slings in function of the capacity of our cranes. The BEXCO’s slings are flexible in usage and can be used on different equipment, which means we can work with a minimum amount of slings for a maximum array of applications.Before the use of the FLEXOR round slings we used PES-soft slings. By changing to FLEXOR, we were able to decrease the hook-up team from 4 to 1 person only. Also we noted a remarkable difference in lifespan thanks to the use of the DURA-1200 sleeve.”ALE is one of the biggest international heavy transportation and lifting contractors, with a global network of operating centres and a large fleet of heavy cranes, specialist transport and installation equipment.For one of their projects off the Nigerian coast, ALE counted on BEXCO’s Ultraline Dyneema@SK78 grommet slings to do the job. Jelle Schepens, Senior Project Manager at ALE “BEXCO’s Ultraline slings had all the advantages we were lookingfor. The reduced weight offers a safer working environment for our people and equipment. The sub-rope system used in these slings is ingenious and reduces any operational risks. The Ultraline slings have a protective and breathing cover, which is a unique asset.We were very satisfied about BEXCO’s communication and project management. Although faced with a very tight time frame, BEXCO was able to deliver all slings inclusive all testing before the project deadline.We had the feeling that BEXCO was one of our partners, not just a supplier.”The general manager of the end user added “I would like to congratulate your company to have been from the beginning transparent with us and for achieving to get the slings delivered on time. I really appreciated your professionalism.”FLEXOR FOR SMULDERS SLINGS FOR ALE HEAVY LIFTDelivered to Smulders• FLEXOR round slings• Lengths between 20 and 53 feet• Breaking loads up to 2,204,000 lbsDelivered to ALE• Ultraline Dyneema SK78 grommet slings• Lengths 8 x 26 feet and 4 x 56 feet• Breaking loads of 9,500,000 lbsPRODUCTS FOR HEAVY LIFTING & INSTALLATIONBEXCO offers various types of lifting and installation arrangements using ropes manufactured with H igh-Modulus Polyethylene (H MPE). With the same strength but weighing 8 to 10 times less than traditional wire ropes, H MPE ropes are more flexible and much easier to handle; HMPE also has a much better fatigue life compared to wire, whilst retaining similar elastic elongation properties.BEXCO’s range of offshore heavy lifting rope has served several onshore and offshore applications, including• Offshore Oil & Gas lifting and installation projects (topsides, modules, substations, flares, modules)• Subsea installation (suction piles, pipelines, anchors, support structures, manifolds) • Foundations for offshore renewable projects (jackets,monopoles, turbines, blades)• Offshore decommissioning & salvageBEXCO supplies the world’s leading engineering contractorswith heavy lift slings to serve at offshore installations locatedin some of the most challenging marine environments on theplanet.BEXCO manufactures its HMPE rope using Dyneema®SK78,having been awarded diamond partnership status with its fibresupplier Royal DSM NV of Holland.• Light and easy handling• Fast rigging installation• Increased lift capacity• Soft contact surfaces• Torque free• Safe operations during use• No abrasion• Maintenance free• Not affected by fresh or salt water• Reduced risk of injuries• No fish hooksDyneema is a registered trademarkof Royal DSM N.V.PRODUCT OVERVIEWStrength(F)Strength(F)Diameter (Inch)Diameter (Inch)HMPE (Dyneema®)Polyester Steel Wire NylonWhen ordering, BEXCO collects detailed operational information so we canoffer, design and deliver exactly the right solution for your needs.ADVANTAGES AND BENEFITS®SK78 COREFLEXOR round slings are tested on various pin diameters to determine bending efficiency on different pin diameters.BEXCO’s precision manufacturing methods ensure production with tight length tolerances of identical batches of FLEXOR Slings.The core is made of Dyneema ® SK78 fibers which gives the sling an unrivaled lightweight in combination with its strength and flexibility.Double protection sleeve with heavy duty velcro closing for easy inspection and repair.Eyes can be lashed together forming a false eye.Strong and sturdy label fastened to sling.BEXCO’s DURA cover made with HMPE, especially designed incollaboration with local weaver. The DURA sleeve is tested intensively and shows a cut and abrasion resistance X10 compared with other round slings.SlingDouble protected eye which retains its shape and resists any flattening whilst operating in harsh conditions, allowing the use of smaller hardware; compared to traditional round slings, the width of the eyes when in use is 30 to 40% smaller.FLEXOR roundslingsEye widthEye width +30%Traditional round slingsFLEXORCONSTRUCTIONFLEXOR is a round sling using a three-strand core. This construction allows a combination of short lengths with high strengths, ensuring ease in handling. FLEXOR is designed for a long lifecycle and flexible usage.The core is made with Dyneema ® SK78 fibres and is protected by a double cover.The outer cover is standard made of a BEXCO DURA-1200 sleeve. This custom-made sleeve offers maximum protection against cuts, punctures, snags and abrasion as well as UV exposure. The strength will be only affected after the covers have been worn through and the cores start to abrade. The eyes are designed to retain their shape during precision lifts and will resist any natural flattening whilst operating in harsh offshore conditions, allowing the use of smaller hardware.FEATURES• Construction: Load bearing cores in Dyneema ® SK78covered with a DURA sleeve made of HMPE • Torque neutral• Specific density: 0.975kg/m3 (floating)• Melting point: 145°C • Abrasion resistance: excellent • Elastic elongation at WLL: +/- 1%• UV Resistance: excellent • Chemical resistance: excellent • Water absorption: 0%• Colour of rope: standard white with blue eyes; other colours on request APPLICATIONS• Heavy lift sling, pennant, A&R recovery, forerunner, pull-in rope,...SECTORS• Onshore and offshore Oil and gas installation • Subsea installation • Offshore renewable• Decommisioning and salvageULTRALINE DYNEEMA SK78®CONSTRUCTIONBEXCO’s precision-engineered Ultraline sling with Dyneema ® SK78 is a so-called parallel core construction. This construction consists of two parts, namely the core elements and the cover (see illustration). It is stronger than conventional steel wire rope, yet the corresponding weight is 8 to 10 times lower.The core elements are three-strand subropes that are oriented parallel to the longitudinal axis of the rope. The cover is a braid (standard consisting of polyester), which provides dimensional stability to the rope structure and protects the cores from external damage. The three-strand core design is used because of the good stretch characteristics and excellent splice strength efficiency exhibited by this type of core design.The braided cover is treated with a marine finish to further enhance the life of the cover under abrasion loads. The cover braid itself does not contribute to the strength of the rope.Remarks:• Sling strengths are for spliced ropes• Single leg sling strengths are for D/d ratio in the eyes >2. See p14 for strength for lower D/d ratios• Grommet sling strengths are for D/d ratio >3. See p14 for strengths for lower FEATURES• Construction: load bearing cores made with Dyneema ®SK78, overbraided with a polyester jacket • Torque neutral• Specific density: depending on rope size, 0.975kg/m3 for the Dyneema ® SK78 core and 1,380kg/m3 for the PES jacket • Melting point: 145°C • Abrasion resistance: excellent • Elastic elongation at WLL: +/-1%• UV Resistance: excellent • Chemical resistance: excellent • Water absorption: 0%• Colour: standard white; other colours on requestAPPLICATIONS• heavy lift sling, pennant, A&R recovery, forerunner, pull-in rope,...SECTORS• Onshore and offshore Oil and gas installation • Subsea installation • Offshore renewable• Decommisioning and salvageSUPERIOR WITH DYNEEMA SK78®FEATURES• Construction: 8- or 12-strand braided rope made withDyneema ® SK78• Torque neutral• Specific density: 0.975kg/m3 (floating)• Melting point: 145°C • Abrasion resistance: excellent • Elastic elongation at WLL: +/- 1%• UV Resistance: excellent • Chemical resistance: excellent • Water absorption: 0%• Colour: standard white Remarks:• Sling strengths are for spliced ropes• Single leg sling strengths are for D/d ratio in the eyes >2. See p14 for strength for lower D/d ratios• Grommet sling strengths are for D/d ratio >2,5. See p14APPLICATIONS• Heavy lift sling, pennant, A&R recovery, forerunner, deepwater lowering line, pull-in rope,...SECTORS• Onshore and offshore Oil and gas installation • Subsea installation • Offshore renewable• Decommisioning and salvage8-s t r a n dCONSTRUCTIONand operation is important.and anti-clockwise strands making the rope torque ing a specialized coating procedure that limits the abrasion and thus significantly extends the lifecycle of the ropes. Other coatings can be applied to suit specific applications.The rope can also be overbraided with a protective jacket or covered with protection sleevesROPE SLING CONFIGURATIONSBEXCO rope slings are available in single and endless configurations.Single leg slingsSingle leg slings are made from a single rope with an eye splice at both ends.• Maximum fiber efficiency• High bending efficiency in eyes (D/d)Disadvantages• Heavier and bigger eyes • Minimum length limitedEndless rope slings or grommetsThe endless rope slings, also known as grommets, are configured splicing both ends of the rope into each other. The splice can be positioned in the center or out of the center. Both grommet legs can be lashed together forming ‘false eyes’.Advantages• Shorter lengths possible • Narrower bearing pointDisadvantages• Lower bending efficiency in the eyes (D/d)• Lower fiber efficiency The choice of sling configuration is depended on the rigging arrangement. Each lift calls for a sling designed for that unique operation. BEXCO can assists in selecting the best solution for a specific project.WLLLengths and elongationBEXCO rope slings are standard supplied with a length tolerance of +/- 0.5%. It is possible to achieve tighter tolerances for e.g. a matched set of slings. These tolerances depend on sling length and configuration. Please contact BEXCO for length tolerances on specific slings.It is import to note that new rope slings will experience an initial elongation when the slings are put under load. This is called bedding-in elongation or constructional elongation. Part of this elongation is recoverable. H owever after a long period of usage, the elongation will no longer be recoverable and the slings will not return to their original length.The below graph highlights the differences between initial bedding-in (constructional) elongation and elastic elongation.ACCESSORIESRope and Eye ProtectionPolyester or HMPE jacketThe Ultraline sling is standard overbraided with a polyester jacket. Also the Superior line can be overbraided with a jacket. The polyester jacket is very durable with excellent abrasion and cut resistance and is non-floating. Rope slings can also be overbraided with an HMPE jacket for superior abrasion and cut resistance making them 100% floating.Deltaweb clothingAs a standard offering, the eyes of BEXCO’s rope slings are protected with a Deltaweb heavy-duty clothing. The clothing is highly abrasion- resistant and remains flexible under working conditions. DURA coverThe eyes can be equipped with a cloth made of HMPE yarns for superior abrasion resistance. These cloths can be applied by sewing or with a removable sleeve applied around the rope with a heavy-duty Velcro tape.CoatingA polyurethane elastomer coating can be applied to a rope. Heavy-duty steel thimblesEyes may also be protected with heavy-duty galvanized steel thimbles. The high-strength thimble protects the rope and maintains the proper bending radius when it is connected to mating hardware.Filter ClothDepending on the installation procedure there may be a potential risk that the rope is dropped on the seabed. Although this in itself has no impact on the rope, it is possible that seabed particles may diffuse into the rope. These particles will have a deteriorating effect on the strength of the rope during its usage life due to their abrasive nature. To avoid this, filter material can be inserted between the cover and the core. The filter stops particles of 5 μm or larger.Handling pointROV Handling points (or clump weight connection points etc.) can be attached to the eyes and the body.Pulling eyesChinese fingers can be installed on the rope for a higher pulling force.BEXCO’s R&D facility performs comprehensive testing of all of its synthetic rope constructions in different configurations. These include break load testing, stiffness and fatigue testing, influence of twist and small D/d ratios. The test facility can be used for proof loading and length verification of slings up to 25m in accordance with various industry standards. FEATURES• 82ft testbed• 16.5ft stroke• 500Tf + 80Tf cylinder• Break testing• Stiffness testing• Creep testing• Fatigue testing• Water spraying• Extensometer systemSERVICESBEXCO has in-house, highly-trained technicians to serve our clients’ needs.• Installation support on site• Inspection on site• Repairs• Our inspectors are trained and hold the required certifications and permits to go offshore.BEXCO H eavy-Lift slings with Dyneema® SK78 are manufactured to the highest standards of quality. BEXCO’s manufacturing facilities are ISO 9001: 2015 certified for the research and development and production of Marine, Offshore and Industrial Ropes in synthetic high performance fibers. All of BEXCO’s production, operational and administrative processes are regularly audited by the world’s leading classification societies including Lloyds Register, DNV GL, Bureau Veritas as the majority of its main offshore synthetic rope solutions serve the world’s leading oil and gas majors. Comprehensive certification packages are put together for each sling including description, drawings, certificates, handling and installation manual.A strong and sturdy identification label is fastened securely to the rope. It typically contains the following data:• Purchase order number• Rope reference number• Rope minimum break strength• Rope diameter• Rope length• Class certification numberCONTACTBEXCO nvIndustriepark Zwaarveld 259220 HammeBelgiumTel: +32 52 499 370E-mail:*****************For more information on our products:www.bexco.beREFERENCESSaipem, Heerema Marine Contracting, Allseas, Geosea, Ale Heavy Lift, Seaway Heavy lifting, Smulders, Bluewater, Jan de Nul, Technip, Subsea 7 Dries HoefkensKey Account ManagerOffshore Lifting and Installation******************Joe McCoyDirector of Sales US***************。
作物学报ACTA AGRONOMICA SINICA 2020, 46(2): 204 / ISSN 0496-3490; CN 11-1809/S; CODEN TSHPA9E-mail: zwxb301@DOI: 10.3724/SP.J.1006.2020.92020水稻半外卷叶突变体sol1的表型分析与基因定位谢园华**李凤菲**马晓慧谭佳夏赛赛桑贤春杨正林凌英华*西南大学水稻研究所 / 转基因植物与安全控制重庆市重点实验室, 重庆 400715摘要: 适度卷曲有利于提高水稻叶片的光合效率, 增加植株光合产物的有效积累量。
我们利用甲基磺酸乙酯(EMS)处理籼型水稻保持系西农1B, 获得一个稳定遗传的水稻半外卷叶突变体。
该突变体从十叶期开始各叶片逐渐向外卷曲直至半卷状, 并伴随茎秆半矮化和叶片披垂, 暂被命名为semi-outcurved leaf 1 (sol1)。
与野生型(WT)相比, sol1的叶片卷曲指数均达到30%以上(P<0.01); 倒一、倒二、倒三、倒四节节间长度和穗长极显著缩短, 倒一、倒二、倒三叶的叶夹角显著或极显著增加; 有效穗数、千粒重、每穗实粒数、结实率显著或极显著下降, 一次枝梗数则增加11.3%(P<0.05)。
sol1的蒸腾速率、胞间CO2浓度、气孔导度显著高于野生型。
石蜡切片显示, sol1倒一叶的泡状细胞体积变小, 数量显著增多, 表皮细胞体积略微增大。
遗传分析表明, sol1的半外卷叶性状受1对隐性核基因调控, 定位于6号染色体标记JY6-3和JY6-10之间165 kb的物理范围内, 共含15个注释基因。
qRT-PCR结果表明, 与泡状细胞相关的内卷基因和外卷叶基因RL14、Roc5、REL1在突变体sol1中呈不同程度的上调, NRL、BRD1、OsHox32、ADL1、LC2则呈不同程度的下调。
研究结果为SOL1基因的克隆和功能研究奠定了基础。
富五边形缺陷氮掺杂碳纳米材料的英文缩写全文共10篇示例，供读者参考篇1Hey, guys! Today, I want to talk about this super cool thing called "Pentagon-shaped Defective Nitrogen-doped Carbon Nanomaterials", or PDNCN for short. Sounds fancy, right?So, what is PDNCN? Well, it's basically a type of material that has a pentagon shape and is made up of carbon with nitrogen mixed in. It's really tiny, like nano-sized tiny, and it has some special properties that make it really useful in all kinds of things.One cool thing about PDNCN is that it has a lot of defects in its structure. Now, I know what you're thinking, defects sound bad, but in this case, they're actually good! These defects make the material super reactive and able to do all sorts of cool things, like capturing and storing energy, or even breaking down harmful pollutants.But wait, there's more! The nitrogen in PDNCN also helps to make it conductive, which means it can carry electricity really well. This makes it perfect for things like super-efficient batteries or even tiny electronic devices.Scientists are really excited about PDNCN because they think it could be the key to creating all kinds of new technologies that are better for the environment and more energy-efficient. So next time you hear about PDNCN, remember that it's not just a bunch of fancy words – it's a really amazing material that could change the world!篇2The other day, our science teacher told us about this super cool thing called "N-doped CNTs"! I was like, "What's that??" And she explained to us that it stands for "Nitrogen-Doped Carbon Nanotubes". Basically, it's this special kind of material that's made up of carbon nanotubes with nitrogen mixed in.She said that N-doped CNTs have this really interesting shape called a "pentagon", which means it has five sides. But there's a little problem with the shape because sometimes there can be defects in the pentagon. That's why they call it "pentagon defects".Even though there can be defects, N-doped CNTs are still really cool because they have all these amazing properties. Like, they're super strong and can conduct electricity really well. Plus,they're really light and can be used in all kinds of cool stuff like electronics and even medicine!I thought it was so fascinating to learn about N-doped CNTs and how they can be used in so many different ways. It just goes to show how science is always coming up with new and exciting things for us to discover!篇3Hey guys, today I want to talk about this super cool thing called FNPDCN, which stands for "Faulty PentagonNitrogen-Doped Carbon Nanomaterials." Cool name, right?So, basically, scientists have found a way to mix carbon and nitrogen together to make these tiny little materials that have five sides. They call them pentagons. But sometimes, there can be little mistakes in the way the pentagons are formed, and that's where the "faulty" part comes in.But don't worry, these materials are actually really useful for lots of things. They can be used in batteries, electronics, and even in medicine! Plus, the nitrogen doping makes them even stronger and more stable than regular carbon nanomaterials.Scientists are still learning more about FNPDCN and how they can be used to make our lives better. Isn't it amazing how something so small can have such a big impact?So, next time you hear about FNPDCN, remember that it's all about those faulty pentagons and how they're changing the world one tiny material at a time. Cool, huh?篇4Hey guys, today I wanna talk to you about this cool thing called the "Penta-DNCC"! It stands for "Pentagonally Defective Nitrogen-Doped Carbon Nanomaterial", but we just call it Penta-DNCC for short because saying that whole thing is like a mouthful, right?So what's so awesome about this Penta-DNCC stuff? Well, it's like a super special kind of material that scientists make in a lab. It's made up of carbon atoms with a little bit of nitrogen mixed in, and it's shaped like a five-sided figure called a pentagon. It's like a tiny, tiny building block that can be used to make all kinds of cool things!One of the coolest things about Penta-DNCC is that it has these tiny defects in its structure that make it really good at absorbing and releasing different kinds of gases. This makes itsuper useful for things like filters that can clean up air pollution, or even for storing and releasing energy in batteries.But that's not all – Penta-DNCC is also really strong and lightweight, which makes it perfect for making things like super-tough coatings for cars and airplanes, or even for building tiny sensors that can detect all kinds of stuff.So yeah, Penta-DNCC may be a big, fancy name, but it's basically just a super cool material that can do all kinds of amazing things. Who knew that a bunch of carbon and nitrogen atoms could be so awesome, right? Let's give a big shoutout to all the scientists who are making this amazing stuff happen!篇5Hey guys, today I want to talk to you about the awesome topic of "Defect-rich Nitrogen-doped Carbon Nanomaterials (NDCNs) for Pentagonal-shaped Properties"!So, when scientists talk about this cool stuff, they give it a fancy name: "" But don't worry, we can just call it NDCNs for short, easy peasy, right?NDCNs are like super tiny particles that are made out of carbon, but they have some nitrogen mixed in too. And guesswhat? They have a special shape – they are pentagon-shaped, just like a five-sided shape! How cool is that?Now, why do scientists care about NDCNs? Well, these little guys have some really amazing properties. They can conduct electricity really well, and they are super strong too. Plus, they can be used in all kinds of things like batteries, sensors, and even in medicine to help treat diseases. Isn't that amazing?But here's the thing – scientists are still trying to figure out all the cool stuff NDCNs can do. They are studying how to make them even better and more useful. So maybe one day, these tiny NDCNs could change the world!And that's it for today, guys! I hope you had fun learning about NDCNs with me. See you next time!篇6Hey guys, today I want to talk to you about this super cool thing called “Rich Pentagonal Defective Nitrogen-Doped Carbon Nanomaterial”. Whew, that’s a mouthful! But don’t worry, we can just call it RPDCNC for short.So, what is RPDCNC? Well, it’s a special kind of material that scientists have been studying to see how it can be used in allsorts of exciting ways. This material is made up of carbon atoms, with a bit of nitrogen mixed in. The coolest part is that it has a unique pentagonal shape, kind of like a five-sided star!Scientists think that RPDCNC could be really useful in things like making super strong structures, or even as a catalyst in chemical reactions. It’s still early days, but there’s a lot of potential for this material to do some pretty amazing things.One of the reasons RPDCNC is so interesting is because of its defects. Normally, we think of defects as being bad, but in this case, they actually make the material even more special. The defects can change the way the material behaves, making it more reactive or stronger in certain situations.Overall, RPDCNC is a really exciting material that could have a big impact on the way we do things in the future. Who knows, maybe one day we’ll all be using RPDCNC in our everyday lives without even realizing it!篇7Hey guys! Today I want to talk to you about a super cool topic - the FND-CNM materials!FND-CNM stands for "Faulty Pentagon Nitrogen-Doped Carbon Nano Materials." Wow, that's a mouthful, right? But don't worry, I'll break it down for you.So, these FND-CNM materials are basically a type of carbon material that has nitrogen atoms mixed in. Now, why is this so special? Well, it turns out that adding nitrogen atoms to carbon can actually change its properties and make it even more awesome!One of the key things about FND-CNM is that it has a unique structure called a pentagon. This structure is kind of like afive-sided shape, and it's what gives FND-CNM its special properties. Scientists are really excited about studying this structure because it could have all sorts of cool applications in things like electronics, energy storage, and even medicine!But here's the catch - not all FND-CNM materials are perfect. Some of them have defects, which can actually make them even more interesting to study. These defects can change the way the material behaves and open up new possibilities for how we can use it in the future.So, there you have it - FND-CNM materials are a super cool area of research that could have a big impact on the world. Who knows, maybe one day you'll be the one discovering new andexciting things about these materials! Keep learning and exploring, and you never know what you might find. See you next time, bye!篇8Once upon a time, there was a super cool material called the "Rich Pentagon Defect Nitrogen-Doped Carbon Nanomaterial," and everyone called it "RPDNDCN" for short. This material was like a superhero in the world of science because it had some amazing powers that made it stand out.First of all, RPNDNCN was super strong, just like a superhero with muscles of steel. Its unique structure made it resistant to all kinds of forces, making it useful for making things likesuper-tough coatings or even body armor.Not only was RPNDNCN strong, but it was also super conductive, just like a lightning bolt in a storm. This meant that it could transfer electricity really well, making it perfect for use in electronics or even as a catalyst for chemical reactions.But the coolest thing about RPNDNCN was that it had a secret weapon – nitrogen doping. This meant that nitrogen atoms were mixed into its carbon structure, giving it extrapowers like enhanced stability and improved performance. It was like adding turbo boost to an already super fast car!So, scientists all over the world were super excited about RPNDNCN and its amazing abilities. They knew that with this material, they could do incredible things and maybe even change the world for the better.And so, the story of the "Rich Pentagon DefectNitrogen-Doped Carbon Nanomaterial" continued, with scientists discovering new and exciting ways to use this superhero material in their research and experiments. Who knows what amazing things they will create next with RPNDNCN? The possibilities are endless!篇9Ha ha, let me try to explain the abbreviation of"Nitrogen-Doped Carbon Nanomaterials with Pentagonal Structure Defects" in a fun, elementary school-style way!So basically, scientists found this super cool material that is made up of carbon atoms with nitrogen mixed in. And get this - the carbon atoms are arranged in a special shape called a pentagon, which is like a five-sided shape. But wait, there's more- there are also some imperfections in the material, which make it even more interesting.Now, when scientists want to be fancy and professional, they call this material "N-DCNMPSD" for short. But you know what? We can make it more fun by calling it "Ninja-Doped Carbon Nanomaterials with Pentagon Shape Defects". How cool is that?These Ninja materials have some awesome properties that make them super useful in things like electronics, energy storage, and even medicine. And by studying them, scientists can learn more about how materials work and maybe even come up with new and exciting discoveries.So next time you hear about N-DCNMPSD, just remember that it's like having a group of ninja atoms in a unique shape, ready to kick some scientific butt! Science is so cool, isn't it?篇10Hey guys, today I want to tell you all about this super cool thing called "FMDNC"! Don't worry if you don't know what that means, I'll explain it all to you in a way that's easy to understand.So, FMDNC stands for "Faulted Multilayer Five-membered Ring Defect Nitrogen-Doped Carbon Nanomaterial". Whew,that's a mouthful! But basically, it's a really special type of material that scientists have made in the lab. It's made up of carbon atoms, just like graphite or diamonds, but it also has nitrogen atoms mixed in. And not just that, it has these cool five-membered rings of carbon atoms, which are kind of like little pentagon shapes.Now, you might be wondering why this material is so special. Well, scientists have found that FMDNC has some really awesome properties that make it useful for all sorts of things. For example, it's super lightweight and strong, so it could be used to make really tough and durable materials. It's also a great conductor of electricity, so it could be used in electronics and batteries. And on top of all that, it can even help to clean up pollution in the environment!Isn't that amazing? I think it's so cool how scientists can make these amazing materials in the lab. Maybe one day, when we grow up, we can be scientists too and make even more cool stuff like FMDNC!。
noesy谱判断构型In recent years, the application of nuclear magnetic resonance (NMR) spectroscopy has gained significant attention in the field of structural elucidation. One of the versatile techniques derived from NMR spectroscopy is NOESY (Nuclear Overhauser Effect Spectroscopy), which plays a crucial role in determining molecular conformations. In this article, we will explore the principles behind NOESY spectroscopy and its application in determining molecular configurations.1. IntroductionIn the field of structural chemistry, accurately determining the three-dimensional structures of molecules is essential for understanding their properties and interactions. NOESY spectroscopy offers a powerful tool for obtaining valuable information about molecular conformations, especially in complex organic and biomolecular systems.2. The Principles of NOESY SpectroscopyNOESY spectroscopy takes advantage of the nuclear Overhauser effect (NOE), which arises from dipolar interactions between different nuclear spins in a molecule. When two spins are close in space, the NOE effect causes cross-relaxation, resulting in observable changes in NMR intensity.3. NOESY Spectroscopy in Molecular Conformation AnalysisThe main application of NOESY spectroscopy lies in the determination of molecular configurations. By analyzing the NOE cross-peaks observed in the NOESY spectrum, valuable information about the spatial proximity ofprotons can be obtained. This information helps to establish distance constraints between specific protons.4. NOESY Spectroscopy and Structural ElucidationNOESY spectroscopy is particularly useful in resolving the configurations of complex organic molecules and biomolecules. By analyzing the NOE-based distance constraints, computer algorithms can generate accurate three-dimensional structures using computational methods such as molecular dynamics simulations.5. Limitations and Challenges of NOESY SpectroscopyDespite its versatility, NOESY spectroscopy has certain limitations and challenges. The technique is sensitive to the dynamic motions of molecules, making it less effective in extremely flexible systems. Furthermore, the accurate interpretation of NOESY data requires expertise in NMR analysis and sophisticated computational tools.6. Advances in NOESY SpectroscopyOver the years, various advancements and modifications have been made to enhance the capabilities of NOESY spectroscopy. Techniques such as selective NOESY and diffusion-ordered spectroscopy (DOSY) have emerged to overcome some of the limitations by offering higher selectivity and improved resolution.7. ConclusionNOESY spectroscopy has become an invaluable tool in the determination of molecular configurations. Its ability to provide distanceconstraints between protons enables the accurate determination of three-dimensional structures. Despite its limitations, NOESY spectroscopy, coupled with computational methods, has significantly advanced our understanding of complex organic and biomolecular systems.In conclusion, NOESY spectrometry has revolutionized the field of structural elucidation by providing valuable insights into molecular conformations. Its application in determining molecular configurations has proven instrumental in various scientific disciplines. As technology continues to advance, we can expect further refinements in NOESY spectroscopy, leading to more accurate and efficient structural analysis.。
油菜素甾醇类化合物合成研究进展刘金娜1，2（1杨凌职业技术学院，陕西杨凌712100；2西北农林科技大学生命科学学院，陕西杨凌712100）摘要油菜素甾醇类化合物能够促进植物生长，提高作物抗性，调节激素平衡，广泛应用于农业生产。
但是，油菜素甾醇类化合物在植物中的含量极低，主要分布在花粉及幼嫩的组织中，提取分离工艺复杂，不易大量获取。
市售的油菜素甾醇类化合物主要通过人工合成的方式获得。
基于生物和化学合成两个方面的思考，本文总结了油菜素甾醇类化合物在植物体内的生物合成途径，并结合工业生产，阐述了油菜素甾醇类化合物相关产品的合成路线，提出了展望，以期为油菜素甾醇类化合物的工业化应用提供参考。
关键词油菜素甾醇类化合物；生物合成；化学合成；展望中图分类号O629.2文献标识码A文章编号1007-5739（2023）22-0067-06DOI：10.3969/j.issn.1007-5739.2023.22.019开放科学（资源服务）标识码（OSID）：Research Progress on Synthesis of BrassinosteroidsLIU Jinna1,2(1Yangling Vocational&Technical College,Yangling Shaanxi712100;2College of Life Sciences,North West Agriculture and Forestry University,Yangling Shaanxi712100) Abstract Brassinosteroids can promote plant growth,improve crop resistance,regulate hormone balance,which are widely used in agricultural production.However,the content of brassinosteroids in plants is extremely low,which mainly distributed in pollen and young tissues.The extraction and separation process of brassinosteroids is complex and difficult to obtain in large quantities.The commercially available brassinosteroids are mainly obtained through artificial synthesis.Based on two aspects of biological and chemical synthesis,this paper summarized the biological synthesis pathways of brassinosteroids in plants,expounded on the synthesis routes of brassinosteroids related products in combi-nation with industrial put forward,proposed prospects,so as to provide references for the industrial application of bras-sinosteroids.Keywords brassinosteroid;biological synthesis;chemical synthesis;prospect油菜素甾醇类化合物（brassinosteroids，简称BRs）最早从欧洲油菜的花粉中分离获得，具有促进植物生长、提高作物抗性、调节激素平衡的作用，广泛应用于农业生产。
第49卷第6期2021年3月广州化工Guangzhou Chemical IndustryVol.49No.6Mar.2021双麟银配合物的原位合成及其光电流响应杨巍1,戴铭2（1苏州农业职业技术学院食品科技学院，江苏苏州215008；2江苏苏净集团有限公司苏州市洁净环境研究院，江苏苏州215122）摘要：以一种双麟配体bdppeda（N,N，-二（二苯基瞬基亚甲基）乙二胺）与AgBr在含HCHO环境下反应，得到了一个双核配合物［Ag2（L）2（“-Br）2］（l,L=N,N，-二（二苯基麟基亚甲基）四氢咪哩）。
对其进行了元素分析、核磁、红外、电喷雾质谱和单晶X-射线衍射等表征。
结果表明含有四氢咪哩环结构的配体L为反应中原位产生。
配合物1具有［Ag2（/i-Br）2］环与两个L配体连接而成的蝶形结构。
在氤灯照射下，1产生了稳定、快速、可重复的光电流响应，电流密度达14.2jl A-cm-2o 关键词：双麟配体；银配合物；原位反应；光电流响应中图分类号：0614.12文献标志码：A文章编号：1001-9677（2021）06-0035-04In-situ Synthesis and Photocurrent Response of A Diphosphine Silver Complex*YANG Wei1,DAI Ming1(1Faculty of Food Science and Technology,Suzhou Polytechnical Institute of Agriculture,Jiangsu Suzhou215008；2Suzhou Clean Environment Institute,Jiangsu Sujing Group Company,Limited,Jiangsu Suzhou215122,China)Abstract:Reaction of AgBr with bdppeda(N,N'-bis(diphenylphosphanylmethyl)ethylenediamine)in the presence of HCHO afforded a dinuclear complex[Ag2(L)2(/z,-Br)2](1,L=N,N'-bis(diphenylphosphanylmethyl)-tetrahydroimidazole).This complex was fully characterized by elemental analysis,1H NMR,31P{*H}NMR,IR spectroscopy,electrospray ionization(ESI)mass spectra and single crystal X-ray diffaraction.The ligand L bearing tetrahydroimidazole ring was in situ-formed.During1,one[Ag2(/x-Br)2]ring was bridged by two L ligands to form a butterfly-s haped structure.Under Xe-lamp irradiation,1exhibited a steady,fast and repeatable photocurrent response with the current density up to14.2|1A•cm-2.Key words：diphosphine ligand:silver complex;in-situ reaction;photocurrent response几十年来，双麟配体与过渡金属组装的配位化合物因具有丰富的结构"切及其在光学材料⑶和作为高效、高选择性有机反应催化剂*"方面的应用而吸引了科学家们广泛的研究兴趣。
Intended purposeThis “Mayer’s hemalum solution - for microscopy” is used for human-medical cell diagnosis and serves the histological and clinico-cytological investigation of sample material of human origin. It is a staining solution that when used together with other in vitro diagnostic products from our portfolio makes target structures evaluable for diagnostic purposes (by fixing, embedding, staining, counterstaining, mounting) in histological and clinico-cytological specimen materials, for example histological sections of e. g. the kidney, muscle tissue, heart, or lung.The hematoxylin and eosin (H&E) staining method is the method most fre -quently used for the staining of histology material. This Mayer’s hemalum solution is used in the hematoxylin-eosin (H&E) overview staining proce -dure, a method routinely used in histology.Unstained structures are relatively low in contrast and are extremely diffi -cult to distinguish under the light microscope. The images created using the staining solutions help the authorized and qualified investigator to better define the form and structure in such cases. Further examinations may be necessary to reach a definitive diagnosis.PrincipleThe hematoxylin and eosin (H&E) staining method is the method most fre -quently used for the staining of histology material. The staining mechanism is a physico-chemical process.In the first step, the positively charged nuclear dye (hematoxylin) binds to the negatively charged phosphate groups of the nucleic acid of the cell nucleus.The nuclei will be dyed dark blue to dark violet.The second step is the counterstaining with negatively charged anionicxanthene dye (eosin Y , eosin B, or erythrosine B). This binds to the positively charged plasma proteins.Cytoplasma and intercellular substances are stained pink to red, while eryth -rocytes will appear with yellow to orange color .Two methods can be distinguished. With the progressive method staining is carried out to the desired intensity, followed by the bluing step in tap water to make colour permanent. With the regressive method the material isover-stained and the excess of staining solution is removed by acid rinsing steps, followed by the bluing step to make color permanent. The struc -tures of nuclei are more differentiated and better visible by the regressive method.Sample materialSections of formalin fixed, paraffin embedded tissue (3 - 4 µm thick paraffin sections) or cryosections, as well as clinico-cytological material like urine sediment, sputum, smears from fine needle aspiration biopsies (FNAB), rinses, imprints, effusions are used as starting material.ReagentsCat. No. 109249Mayer’s hemalum solution 500 ml, 1 l, 2.5 lfor microscopyAlso required:Cat. No. 109844 Eosin Y-solution 0.5% aqueous 1 l, 2.5 l for microscopy orCat. No. 102439 Eosin Y-solution 0.5%, alcoholic 500 ml, 2.5 lfor microscopy orCat. No. 117081 Eosin Y solution 1%, alcoholic 1 lfor microscopyIn Vitro Diagnostic Medical DeviceCat. No. 100063 Acetic acid (glacial) 100% anhydrous 1 l, 2.5 lfor analysis EMSURE ® ACS,ISO,Reag. Ph Eur Cat. No. 100316 Hydrochloric acid 25% 1 l, 2.5 lfor analysis EMSURE ®Sample preparationThe sampling must be performed by qualified personnel.All samples must be treated using state-of-the-art technology. All samples must be clearly labeled.Suitable instruments must be used for taking samples and their prepara-tion. Follow the manufacturer’s instructions for application / use.When using the corresponding auxiliary reagents, the corresponding in -structions for use must be observed.Deparaffinize and rehydrate sections in the conventional manner .Reagent preparationThe Mayer’s hemalum solution used for staining is ready-to-use, dilution of the solution is not necessary and merely produces a deterioration of the staining result and its stability.It is recommended to filter the solution prior to its use.Eosin Y-solution 0.5 %, aqueous (Cat. No. 109844) or Eosin Y-solution 0.5 %, alcoholic (Cat. No. 102439) or Eosin Y-solution 1 %, alcoholic (Cat. No. 117081)For the intensification of the eosin staining, e. g. 1.0 ml of glacial acetic acid needs to be added to 500 ml working solution.The acidified working solution is sufficient for approx. 750 specimens; it should, however , be renewed after 14 days at the latest.When using the alcoholic Eosin Y solutions, a shorter alcohol series (starting with ethanol 96 % and a reaction time of just 10 seconds) must be used in the individual staining procedures.Hydrochloric acid 0.1 %, aqueousFor preparation of approx. 100 ml solution mix:Hydrochloric acid 25 %0.4 ml Distilled water100 mlH&E stainingProcedureRegressive staining of paraffin sections Staining in the staining cellDeparaffinize histological slides in the conventional manner and rehydrate in a descending alcohol series.The slides should be allowed to drip off well after the individual staining steps, as a measure to avoid any unnecessary cross-contamination of solu -tions.The stated times should be adhered to in order to guarantee an optimal staining result.Slide with paraffin section Distilled water1 min Mayer’s hemalum solution 3 min Hydrochloric acid 0.1 %, aqueous2 sec Running tap water3 - 5 minEosin Y-solution 0.5 %, aqueous orEosin Y-solution 0.5 %, alcoholic* orEosin Y-solution 1 %, alcoholic* 3 minRunning DI water30 sec Ethanol 70 % 1 min Ethanol 70 % 1 min Ethanol 96 % 1 min Ethanol 96 % 1 min Ethanol 100 % 1 min Ethanol 100 % 1 min Xylene or Neo-Clear ® 5 min Xylene or Neo-Clear ®5 minMount the Neo-Clear ®-wet slides with Neo-Mount ® or the xylene-wet slides with e. g. Entellan ® new and cover glass.* When using the alcoholic Eosin Y solutions, a shorter alcohol series (start- ing with ethanol 96 % and a reaction time of just 10 seconds) must be used in the individual staining procedures.MicroscopyMayer’s hemalum solutionfor microscopy1.09249.05001.09249.1000 1.09249.10221.09249.2500For professional use onlyAfter dehydration (ascending alcohol series) and clarification with xylene or Neo-Clear®, histological samples can be mounted with water-free mounting agents (e. g. DPX new, Entellan® new, Neo-Mount®) and a cover glass and can then be stored.ResultNuclei dark blue to dark violet Cytoplasm, intercellular substances pink to redErythrocytes yellow to orangeTrouble-shootingMicroscopic image Possible cause RemedyEosinophilic structures are too weakly stained After Eosin Y solutionrinse with tapwaterAfter Eosin Y solutionrinse with DI waterEosinophilic structures are too weakly stained Eosin Y solution notacidifiedEosin Y solution mustbe acidified (see “Reagent preparation”)Eosinophilic structures are too weakly stained Standard ascendingalcohol series used(from ethanol 70 %)Use a shortened as-cending alcohol series(from ethanol 96 %)Technical notesThe microscope used should meet the requirements of a medical diagnostic laboratory.When using histoprocessor systems or automatic staining systems, please follow the instructions for use supplied by the supplier of the system and software.DiagnosticsDiagnoses are to be made only by authorized and qualified personnel. Valid nomenclatures must be used.This method can be supplementarily used in human diagnostics.Further tests must be selected and implemented according to recognized methods.Suitable controls (e. g. ISOSLIDE® H&E, Cat. No. 1.02755.0001) should be conducted with each application in order to avoid an incorrect result.StorageStore the Mayer’s hemalum solution - for microscopy at +15 °C to +25 °C. Dye precipitation in the staining solutions might occur with storing tem-peratures below +15 °C. In that case the bottles should be put into a water bath of approx. 60 °C for 2 - 3 hours. The solutions should be filtered before use.Shelf-lifeThe Mayer’s hemalum solution - for microscopy can be used until the stated expiry date.After first opening of the bottle, the contents can be used up to the stated expiry date when stored at +15 °C to +25 °C.The bottles must be kept tightly closed at all times.Capacity1500 stainings / 500 mlAdditional instructionsFor professional use only.In order to avoid errors, the application must be carried out by qualified personnel only.National guidelines for work safety and quality assurance must be followed. Microscopes equipped according to the standard must be used.Protection against infectionEffective measures must be taken to protect against infection in line with laboratory guidelines.Instructions for disposalThe package must be disposed of in accordance with the current disposal guidelines.Used solutions and solutions that are past their shelf-life must be disposed of as special waste in accordance with local guidelines. Information on dis- posal can be obtained under the Quick Link “Hints for Disposal of Microsco-py Products” at . Within the EU the currently applicable REGULATION (EC) No 1272/2008 on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006 applies.Auxiliary reagentsCat. No. 100063 Acetic acid (glacial) 100% anhydrous 1 l, 2.5 lfor analysis EMSURE®ACS,ISO,Reag. Ph EurCat. No. 100316 Hydrochloric acid 25% 1 l, 2.5 lfor analysis EMSURE®Cat. No. 100579 DPX new 500 mlnon-aqueous mounting mediumfor microscopyCat. No. 100869 Entellan® new for cover slipper 500 mlfor microscopyCat. No. 100974 Ethanol denatured with about 1 % 1 l, 2.5 lmethyl ethyl ketonefor analysis EMSURE®Cat. No. 102439 Eosin Y-solution 0.5%, alcoholic 500 ml, 2.5 lfor microscopyCat. No. 102755 ISOSLIDE® H&E control slides 25 testswith reference tissue for the overviewstaining in histologyCat. No. 103699 Immersion oil Type N acc. to ISO 8036 100-ml drop-for microscopy ping bottle Cat. No. 104699 Immersion oil 100-ml drop-for microscopy ping bottle,100 ml, 500 ml Cat. No. 107961 Entellan® new 100 ml, 500 ml, rapid mounting medium 1 lfor microscopyCat. No. 108298 Xylene (isomeric mixture) 4 lfor histologyCat. No. 109016 Neo-Mount® 100-ml drop-anhydrous mounting medium ping bottle,for microscopy 500 mlCat. No. 109843 Neo-Clear® (xylene substitute) 5 lfor microscopyCat. No. 109844 Eosin Y-solution 0.5% aqueous 1 l, 2.5 lfor microscopyCat. No. 117081 Eosin Y solution 1%, alcoholic 1 lfor microscopyHazard classificationCat. No. 109249Please observe the hazard classification printed on the label and the infor-mation given in the safety data sheet.The safety data sheet is available on the website and on request.Main components of the productCat. No. 109249C.I. 75290 4.4 g/lAl2(SO4)3 x 18 H2O 28 g/lC6H8O7 x H2O 1 g/l1 l = 1.05 kgOther IVD productsCat. No. 102572 Schiff’s reagent Intense 1 lfor the detection of aldehyde and muco-substances in microscopyCat. No. 105174 Hematoxylin solution modified acc. to 500 ml, 1 l,Gill III 2.5 lfor microscopyCat. No. 105175 Hematoxylin solution modified acc. 500 ml, 2.5 lto Gill IIfor microscopyCat. No. 109033 Schiff’s reagent 500 ml, 2.5 lfor microscopyGeneral remarkIf during the use of this device or as a result of its use, a serious incident has occurred, please report it to the manufacturer and/or its authorised representative and to your national authority.Literature1. R omeis - Mikroskopische Technik, Editors: Maria Mulisch, Ulrich Welsch, 2015, Springer Spektrum, 19. Auflage2. W elsch Sobotta - Lehrbuch Histologie, Editor: Ulrich Welsch, 2006, ELSEVIER Urban&Fischer , 2. Auflage3. Histotechnik, Gudrun Lang, 2013 Springer Verlag, 2. Auflage4. T heory and Practice of Histological Techniques, John D Bancroft, Marilyn Gamble, 2008, Churchill Livingstone ELSEVIER, 6th Edition5. Laboratory Manual of Histochemistry, Linda L. Vacca, 1985, Raven Press6. B asiswissen Histologie und Zytologie, Karl Heinz Stein, Hellmut Flenker , 1998, uZv, 2. Auflage7. H istological & Histochemical Methods: Theory & Practice, J. A. Kiernan, 1990, Pergamon Press, 2nd Edition8. H istological and Histochemical Methods, Theory and practice, J. A. Kiernan, 2015, Scion Publishing Ltd, 5th Edition9. C onn’s Biological Stains, R.W. Horobin, J.A. Kiernan, 2002, BiologicalStain Commission Publication, 10th EditionConsult instructions for useTemperature limitationUse byYYYY-MM-DD Caution, consultaccompanying documents Manufacturer Catalog number Batch codeStatus: 2021-Jan-19Merck KGaA, 64271 Darmstadt, Germany, Tel. +49(0)6151 72-2440EMD Millipore Corporation, 400 Summit DriveBurlington MA 01803, USA, Tel. +1-978-715-4321Sigma-Aldrich Canada Co. or Millipore (Canada) Ltd. 2149 Winston Park, Dr . Oakville, Ontario, L6H 6J8 Phone: +1 800-565-1400。
表面技术第52卷第4期PET薄膜的亲水改性研究丁蕊蕊，潘均安，阳范文，苏昊橼，陈志琪，卓志宁，丁华畅，郑皙月，周馨怡，冯泳婷（广州医科大学 基础医学院生物医学工程系，广州 511436）摘要：目的探索对聚对苯二甲酸乙二醇酯（PET）薄膜亲水改性的制备工艺，研究其是否能有效提高PET 薄膜表面的亲水性。
方法将PET薄膜裁剪成1 cm×4 cm的矩形样条，样条放入盛有无水乙醇的离心管中超声清洗，经烘干后再放入叔丁基过氧化氢（TBHP）溶液中进行引发反应，引发完成的PET薄膜样条依次用无水乙醇、水超声清洗后放入PVP溶液进行改性，最后超声清洗并烘干放置24 h进行接触角测试与红外光谱测试，分别评价PET薄膜的亲水性与表面成分变化。
结果使用不同PVP进行改性，PVP-K90对PET薄膜的改性效果最佳，接触角下降最明显，其接触角为21.3°。
研究不同浓度TBHP对接触角的影响，随着TBHP 浓度增加，接触角逐渐减小，TBHP浓度为1%时，其接触角为28°。
探究不同浓度PVP-K90对接触角的影响，随着PVP-K90浓度增加，接触角呈现先减小后略有增大的变化趋势，PVP-K90浓度为5%时达到最小值（24.2°）。
最佳配方和工艺为：5%PVP-K90+1%TBHP，温度80 ℃，转速600 r/min，反应时间1 h。
PET 薄膜的接触角从改性前的81.7°下降到改性后的29.5°，亲水性显著提高。
亲水改性PET薄膜超声清洗20 min 以上，接触角仍保持不变，红外光谱在3 427、1 608 cm‒1的特征峰明显增强，PVP以化学键合方式接枝在PET表面。
结论以TBHP作引发剂，PVP-K90作改性剂，通过表面接枝方法可有效提高PET薄膜的亲水性。
关键词：PET薄膜；聚乙烯吡咯烷酮；亲水改性；表面接枝；接触角中图分类号：TB34文献标识码：A 文章编号：1001-3660(2023)04-0374-07DOI：10.16490/ki.issn.1001-3660.2023.04.033Hydrophilic Modification of PET FilmDING Rui-rui, PAN Jun-an, YANG Fan-wen, SU Hao-yuan, CHEN Zhi-qi, ZHUO Zhi-ning,DING Hua-chang, ZHENG Xi-yue, ZHOU Xin-yi, FENG Yong-ting(Department of Biomedical Engineering, Basic Medical School, GuangzhouMedical University, Guangzhou 511436, China)ABSTRACT: It is a hydrophilic modification method with simple process, good effect and cleaning resistance, which can effectively improve the hydrophilicity of the surface of the polyethylene glycol terephthalate (PET) film. Due to the defects of the existing PET hydrophilic modification methods, such as high equipment cost, complicated operation, this paper studies the use of polyvinyl pyrrolidone (PVP) as modifier and tert-butyl hydroperoxide (TBHP) as initiator for the shortcomings of the收稿日期：2022–03–01；修订日期：2022–04–25Received：2022-03-01；Revised：2022-04-25基金项目：2022年度广东省攀登计划项目（pdjh2022b0424）；2020年度广医大-睿康医疗公司联合研究项目（J20172011）Fund：Climbing Plan Project of Guangdong Province in 2022 (pdjh2022b0424); Joint Research Project of Guangzhou Medical University and Recon Medical Company in 2020 (J20172011)通讯作者：阳范文（1972—），男，博士，教授，主要研究方向为生物医学高分子材料和3D打印。
