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astm e290-22 标准解读ASTM E290-22是美国材料与试验协会（ASTM）发布的一个标准，名为"Standard Test Methods for Bend Testing of Material for Ductility."（材料延展性的弯曲试验标准方法）。

该标准规定了通过进行弯曲试验来评估金属材料延展性的测试方法。

弯曲试验是一种常用的材料测试方法，旨在评估材料的塑性变形能力、延展性和抗拉强度。

ASTM E290-22详细说明了在弯曲试验中进行的步骤、数据记录和结果分析方法。

ASTM E290-22适用于金属材料，如钢、铝、镍合金等，并定义了几种不同的试样形状和尺寸，例如平面试样和圆形试样。

该标准给出了进行弯曲试验的设备要求，包括试样夹具和测量仪器。

具体的试验步骤包括：1.准备试样：根据标准规定的尺寸和几何形状，制备试样。

2.安装试样：将试样放置在弯曲试验夹具中，确保试样完全贴合。

3.施加载荷：通过在试样上施加力来进行弯曲试验。

力的大小和施加方式要符合标准中的要求。

4.记录数据：在施加力的过程中，记录试样的弯曲和挠度变化情况。

可以使用测量仪器来准确测量试样的变形。

5.分析结果：根据测试数据计算弯曲应力、弯曲角度和弯曲半径等参数。

ASTM E290-22还提供了对试样断裂情况进行评估的准则，以确定试样是否通过了弯曲试验。

该标准的应用范围相对广泛，在材料科学和工程领域中被广泛采用。

通过进行弯曲试验，可以评估材料的延展性和塑性变形能力，为材料选择、产品设计和结构分析提供重要的数据支持。

值得注意的是，ASTM E290-22并未详细讨论数据分析和结果解读的方法。

在实际应用中，需要结合其他标准和技术来对弯曲试验数据进行深入分析和解读。

此外，该标准仅适用于金属材料的弯曲试验，对其他类型的材料如塑料、陶瓷等不适用。

总之，ASTM E290-22是一个描述金属材料弯曲试验方法的标准。

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EUROPEAN PHARMACOPOEIA 8.0Omega-3-acid ethyl esters90The ethyl ester peaks,which may be present in the form of an unresolved double peak,are identified as the major peaks in the chromatogram (see Figure 2063.-1).Limit :–sum of oligomers and partial glycerides :maximum 7.0per cent.ASSAY EPA and DHA ethyl esters (2.4.29).For identification of the peaks,see Figure 2063.-2.Total omega-3-acid ethyl esters (2.4.29).See Figure 2063.-2.STORAGEUnder an inert gas,in an airtight container,protected fromlight.LABELLING The label states:–the content of total omega-3-acid ethyl esters;–the content of EPA ethyl ester and DHA ethyl ester.07/2012:1250OMEGA-3-ACID ETHYL ESTERS 90Omega-3acidorum esteri ethylici 90DEFINITION Ethyl esters of alpha -linolenic acid (C18:3n-3),morocticacid (C18:4n-3),eicosatetraenoic acid (C20:4n-3),timnodonic (eicosapentaenoic)acid (C20:5n-3;EPA),heneicosapentaenoic acid (C21:5n-3),clupanodonic acid (C22:5n-3)and cervonic (docosahexaenoic)acid (C22:6n-3;DHA).Omega-3-acid ethyl esters are obtained by transesterification of the body oil obtained from fish of families such as Engraulidae ,Carangidae ,Clupeidae ,Osmeridae ,Salmonidae and Scombridae or from animals of the class Cephalopoda and subsequent physico-chemical purification processes,including urea fractionation followed by molecular distillation.Content :–EPA and DHA ethyl esters :minimum 80per cent,with minimum 40per cent of EPA ethyl esters and minimum 34per cent of DHA ethyl esters;–total omega-3-acid ethyl esters :minimum 90per cent.A suitable antioxidant may be added.PRODUCTIONThe content of dioxins and dioxin-like PCBs (polychlorinated biphenyls)is controlled using methods and limits inaccordance with the requirements set in the European Union or other applicable regulations.CHARACTERSAppearance :light yellow liquid.Solubility :practically insoluble in water,very soluble inacetone,in ethanol (96per cent),in heptane and in methanol.IDENTIFICATIONA.Examine the chromatograms obtained in the assay for EPA and DHA ethyl esters.Results :the peaks due to eicosapentaenoic acid ethyl ester and docosahexaenoic acid ethyl ester in the chromatogram obtained with test solution (b)are similar in retention time to the corresponding peaks in the chromatograms obtained with reference solutions (a 1)and (a 2).B.It complies with the limits of the assay for total omega-3-acid ethyl esters.TESTSAbsorbance (2.2.25):maximum 0.55at 233nm.Dilute 0.300g to 50.0mL with trimethylpentane R .Dilute 2.0mL of the solution to 50.0mL with trimethylpentane R .Acid value (2.5.1):maximum 2.0,determined on 10g in 50mL of the prescribed mixture of solvents.Anisidine value (2.5.36):maximum 20.0.Peroxide value (2.5.5,Method A ):maximum 10.0.Oligomers .Size-exclusion chromatography (2.2.30).Test solution.Dilute 50.0mg of the substance to be examined to 10.0mL with tetrahydrofuran R .Reference solution .Dissolve 50mg of monodocosahexaenoin R ,30mg of didocosahexaenoin R and 20mg of tridocosahexaenoin R in tetrahydrofuran R and diluteto 100.0mL with the same solvent.Column :3columns to be connected in series:–size :l =0.3m,Ø=7.8mm;–stationary phase :styrene-divinylbenzene copolymer R(5μm)with the following pore sizes:–column 1:50nm;–column 2:10nm;–column 3:5nm;–connection sequence :injector –column 1–column 2–column 3–detector.Mobile phase :tetrahydrofuran R .Flow rate :0.8mL/min.Detection :differential refractometer.Injection :40μL.1.oligomers 2.ethyl estersFigure 1250.-1.–Chromatogram for the test for oligomers inomega-3-acid ethyl esters 90:spiked sampleGeneral Notices (1)apply to all monographs and other texts2907Omega-3-acid ethyl esters 90EUROPEAN PHARMACOPOEIA8.0System suitability :reference solution:–elution order :tridocosahexaenoin,didocosahexaenoin,monodocosahexaenoin;–resolution :minimum 2.0between the peaks due to didocosahexaenoin and monodocosahexaenoin;minimum 1.0between the peaks due to tridocosahexaenoin and didocosahexaenoin.Calculate the percentage content of oligomers using the following expression:A =sum of the areas of all the peaks in the chromatogram;B=sum of the areas of the peaks with a retention time less than the retention time of the peaks due to ethyl esters.The ethyl ester peaks,which may be present in the form of an unresolved double peak,are identified as the major peaks in the chromatogram (see Figure 1250.-1).Where the result obtained exceeds the limit due to the presence of monoglycerides,the following procedure is carried out.Test solution .Weigh 50.0mg of the substance to be examined into a quartz tube.Add 1.5mL of a 20g/L solution of sodium hydroxide R in methanol R ,cover with nitrogen R ,cap tightly with a polytetrafluoroethylene-lined cap,mix and heat on a water-bath for 7min.Allow to cool.Add 2mL of boron trichloride-methanol solution R ,cover with nitrogen R ,cap tightly,mix and heat on a water-bath for 30min.Cool to 40-50°C,add 1mL of trimethylpentane R ,cap and shakevigorously for at least 30s.Immediately add 5mL of saturated sodium chloride solution R ,cover with nitrogen R ,cap and shake thoroughly for at least 15s.Transfer the upper layer to a separate tube.Shake the methanol layer once more with 1mL of trimethylpentane R .Wash the combined trimethylpentane extracts with 2quantities,each of 1mL,of water R .Carefully evaporate the solvent under a current of nitrogen R then add 10.0mL of tetrahydrofuran R to the residue.Add a small amount of anhydrous sodium sulfate R and filter.Calculate the percentage content of oligomers using the following expression:A =sum of the areas of all the peaks in the chromatogram;B ′=sum of the areas of the peaks with a retention time less than the retention time of the peaks due to methyl esters.Limit :–oligomers :maximum 1.0per cent.ASSAYEPA and DHA ethyl esters (2.4.29).For identification of the peaks,see Figure 1250.-2.Total omega-3-acid ethyl esters (2.4.29).See Figure 1250.-2.STORAGEUnder an inert gas,in an airtight container,protected fromlight.1.phytanic acid 5.C18:3n-49.furan acid 513.furan acid 717.furan acid 921.C22:5n-62.C16:3n-4 6.C18:3n-310.C19:514.C20:4n-318.C21:5n-322.furan acid 113.C16:4n-17.C18:4n-311.C20:3n-615.furan acid 819.C22:423.C22:5n-34.C18:3n-68.C18:4n-112.C20:4n-616.EPA20.furan acid 1024.DHAFigure 1250.-2.–Chromatogram for the assays of omega-3-acid ethyl esters 902908See the information section on general monographs (cover pages)EUROPEAN PHARMACOPOEIA 8.0Omega-3-acidtriglycerides07/2012:1352OMEGA-3-ACID TRIGLYCERIDESOmega-3acidorum triglycerida DEFINITIONMixture of mono-,di-and triesters of omega-3acidswith glycerol,containing mainly triesters and obtained either by esterification of concentrated and purified omega-3acids with glycerol or by transesterification of the omega-3acid ethyl esters with glycerol.The origin of the omega-3acids is the body oil obtained from fish of families such as Engraulidae ,Carangidae ,Clupeidae ,Osmeridae ,Salmonidae and Scombridae or from animals of the class Cephalopoda .The omega-3acids are identified as the following acids:alpha -linolenic acid (C18:3n-3),moroctic acid (C18:4n-3),eicosatetraenoic acid (C20:4n-3),timnodonic (eicosapentaenoic)acid (C20:5n-3;EPA),heneicosapentaenoic acid (C21:5n-3),clupanodonic acid (C22:5n-3)and cervonic (docosahexaenoic)acid (C22:6n-3;DHA).Content :–sum of the contents of the omega-3acids EPA and DHA,expressed as triglycerides :minimum 45per cent;–total omega-3acids,expressed as triglycerides :minimum 60per cent.A suitable antioxidant may be added.PRODUCTIONThe content of dioxins and dioxin-like PCBs (polychlorinated biphenyls)is controlled using methods and limits inaccordance with the requirements set in the European Union or other applicable regulations.CHARACTERSAppearance :pale yellow liquid.Solubility :practically insoluble in water,very soluble inacetone and in heptane,slightly soluble in anhydrous ethanol.IDENTIFICATIONExamine the chromatograms obtained in the assay for EPA and DHA.Results :the peaks due to eicosapentaenoic acid methyl ester and docosahexaenoic acid methyl ester in the chromatogram obtained with test solution (b)are similar in retention time to the corresponding peaks in the chromatograms obtained with reference solutions (a 1)and (a 2).TESTSAbsorbance (2.2.25):maximum 0.73at 233nm.Dilute 0.300g to 50.0mL with trimethylpentane R .Dilute 2.0mL of the solution to 50.0mL with trimethylpentane R .Acid value (2.5.1):maximum 3.0,determined on 10.0g in 50mL of the prescribed mixture of solvents.Anisidine value (2.5.36):maximum 30.0.Peroxide value (2.5.5,Method A ):maximum 10.0.Oligomers and partial glycerides .Size-exclusion chromatography (2.2.30).Test solution .Dilute 50.0mg of the substance to be examined to 10.0mL with tetrahydrofuran R .Reference solution .Dissolve 50mg of monodocosahexaenoin R ,30mg of didocosahexaenoin R and 20mg oftridocosahexaenoin R in tetrahydrofuran R and dilute to 100.0mL with the same solvent.Column :3columns to be connected in series:–size :l =0.3m,Ø=7.8mm;–stationary phase :styrene-divinylbenzene copolymer R (5μm)with the following pore sizes:–column 1:50nm;–column 2:10nm;–column 3:5nm;–connection sequence :injector −column 1−column 2−column 3−detector.Mobile phase :tetrahydrofuran R .Flow rate :0.8mL/min.Detection :differentialrefractometer.1.oligomers2.triglycerides3.diglycerides4.monoglyceridesFigure 1352.-1.–Chromatogram for the test for oligomers and partial glycerides in omega-3-acid triglyceridesGeneral Notices (1)apply to all monographs and other texts2909。

CAUTION: This quick reference guide is only a summary of the EU-ME2, EU-ME2 Premier Plus Instructions for Use. For detailed operating instructions, be sure to followthe EU-ME2, EU-ME2 Premier Plus Instruction Manual included with your EU-ME2 or EU-ME2 Premier Plus purchase.EU-ME2, EU-ME2 Premier PlusQuick Reference Guide - FLOW Mode1 P ress the FLOW key on the keyboard.* The LCD touch panel automatically switches from MAIN MENU to FLOW MAIN .2S imultaneously, the ultrasound image on the monitor switches to the FLOW mode. Ensure that the ROI with colorappears on the image.3S elect a FLOW mode: COLOR , POWER , or H-FLOW .COLOR FLOWPOWER FLOWH-FLOWFLOW MAINT ouch Panel: MAIN MENUGray scale Color scale(Value: velocity range)CAUTION: This quick reference guide is only a summary of the EU-ME2, EU-ME2 Premier Plus Instructions for Use. For detailed operating instructions, be sure to followthe EU-ME2, EU-ME2 Premier Plus Instruction Manual included with your EU-ME2 or EU-ME2 Premier Plus purchase.4 S elect the LOCATION button and adjust the ROI position. The ROI can be moved by using the ROI buttons or the trackball .5S elect the SIZE button and adjust the ROI size. The ROI size can be adjusted by using the ROI buttons or the trackball .6U se the FLOWkey to exit the FLOW mode.ROIROITrackballTrackballROI ButtonsCAUTION: This quick reference guide is only a summary of the EU-ME2, EU-ME2 Premier Plus Instructions for Use. For detailed operating instructions, be sure to followthe EU-ME2, EU-ME2 Premier Plus Instruction Manual included with your EU-ME2 or EU-ME2 Premier Plus purchase.Display (Single/Dual)1P ress the DISPLAY button to switch between single-screen display and dual-screen display.1Detect blood flow in B mode or FLOW mode.SINGLEDUALFLOW ModeSwitchB Mode and FLOW Mode1P ress the FLOW GAIN buttons to adjust the sensitivity of the flow signal in the FLOW mode.* Flow gain can be adjusted in 32 steps.FLOW GAIN buttonsCAUTION: This quick reference guide is only a summary of the EU-ME2, EU-ME2 Premier Plus Instructions for Use. For detailed operating instructions, be sure to followthe EU-ME2, EU-ME2 Premier Plus Instruction Manual included with your EU-ME2 or EU-ME2 Premier Plus purchase.3T he PW CURSOR (two short lines) is shown at the center of the left image. Move the PW CURSOR to the blood flowusing the trackball .4P ress the PW STARTbutton and the Pulse Wave Doppler Waveform starts.PW CURSORPW START ButtonPulse WaveDoppler Waveform2P ress the PW key on the keyboard. Simultaneously, the image switches to the PW mode.* The LCD touch panel automatically switches from MAIN MENU to PW MAIN .CAUTION: This quick reference guide is only a summary of the EU-ME2, EU-ME2 Premier Plus Instructions for Use. For detailed operating instructions, be sure to followthe EU-ME2, EU-ME2 Premier Plus Instruction Manual included with your EU-ME2 or EU-ME2 Premier Plus purchase.Sample Volume1T he SAMPLE VOLUME button designates the width of the blood flow from which Pulse Wave Doppler is acquired. Makesure the cross-sectional surface is positioned between the two lines. Press the SAMPLE VOLUME button to adjust the width of the two lines. The width can be adjusted with the trackball or ARROWkeys.1T he volume of Pulse Wave Doppler Waveforms can be adjusted. Select the PW ADJUST tab and adjust the volume usingthe VOLUME buttons. Pulse Wave Doppler sound can be output from the bottom of the EU-ME2. The adjusted volume setting is saved and recalled the next time the EU-ME2 is used.CAUTION: This quick reference guide is only a summary of the EU-ME2, EU-ME2 Premier Plus Instructions for Use. For detailed operating instructions, be sure to followthe EU-ME2, EU-ME2 Premier Plus Instruction Manual included with your EU-ME2 or EU-ME2 Premier Plus purchase.1A djusting the Base Line position up or down using the BASELINE button corrects the views of Pulse Wave DopplerWaveforms by avoiding imbalanced views. The BASELINE button, on the LCD touch panel, is highlighted during Base Lineadjustment. Touching the button again returns to the original display.Olympus is a registered trademark of Olympus Corporation, Olympus America Inc., and/or their affiliates.。

小学下册英语第1单元测验试卷考试时间：80分钟（总分:100）A卷一、综合题(共计100题共100分)1. 听力题：A battery provides ______ (power) to devices.2. 听力题：A _______ can measure the speed of a moving object in a straight line.3. 听力题：A supernova is an explosion of a dying ______.4. 听力题：The process where plants release oxygen is called ______.5. 选择题：How many players are there in a baseball team?A. 9B. 10C. 11D. 12答案: A6. 选择题：Which planet is known for having a great red spot?A. MarsB. JupiterC. SaturnD. Neptune7. 填空题：A _____ (植物) can tell us about the environment it grows in.8. 填空题：The architect designs _____ (建筑) for cities.What is the capital of Finland?A. HelsinkiB. EspooC. TampereD. Oulu答案: A10. 填空题：My favorite snack is ________ (坚果).11. 听力题：A _______ can be a delightful surprise in your garden.12. 填空题：My uncle is a __________ (艺术家).13. longitude) lines run from the North Pole to the South Pole. 填空题：The ____14. 听力题：The signing of the Treaty of Paris ended the _______ War.15. 填空题：I found a _______ (小蛇) in the grass.16. 选择题：What do you call the person who flies an airplane?A. DriverB. PilotC. SailorD. Engineer答案:B17. 填空题：I like to _______ puzzles on rainy days.18. Depression started in __________ (1929). 填空题：The Grea19. 选择题：What is the name of the famous painting by Vincent van Gogh?A. The Starry NightB. The Girl with a Pearl EarringC. The Last SupperD. The ScreamA ____(hot spring) is a natural pool of warm water.21. 选择题：What do we call the study of the Earth's physical structure and substances?A. GeologyB. GeographyC. AstronomyD. Ecology22. 选择题：What do we call the act of maintaining something in good condition?A. UpkeepB. PreservationC. MaintenanceD. All of the Above答案：D23. 填空题：In the evening, my family and I watch a movie together. We choose a funny one, and we all laugh out loud. Before going to bed, I think about how much I enjoyed my day. I feel grateful for my ______ (7), my family, and all the fun activities we did24. 填空题：The ________ was a prominent figure in the women's suffrage movement.25. 填空题：Ancient Romans spoke the language called ________.26. 听力题：The chemical properties of a substance describe its _____ (reactivity).27. 选择题：What do you call a story about real events?a. Fictionb. Non-fictionc. Biographyd. Fairytale答案:B28. 听力题：We will have a ________ next week.29. 选择题：What is the name of the popular movie genre that involves superheroes?A. DramaC. ActionD. Adventure答案: C30. 选择题：What is the term for a planet's orbit around the sun?A. RotationB. RevolutionC. OrbitD. Translation31. 选择题：What do we call the act of writing a letter?A. CorrespondenceB. CommunicationC. MessagingD. Notifying答案:A32. 选择题：How many moons does Mars have?A. 1B. 2C. 3D. 433. 填空题：The cat is sleeping on the ______.34. 填空题：The __________ (历史的价值观差异) can lead to conflict.35. 听力题：A ______ is a system used to keep track of elements and their properties.36. 填空题：My cousin is learning to _______ (动词). 她对这个很 _______ (形容词).37. 听力题：They are _____ (climbing) the hill.38. 选择题：What do you call a person who studies botany?A. BotanistB. HorticulturistD. Gardener答案: A39. 选择题：What do we call the science of studying living things?A. PhysicsB. ChemistryC. BiologyD. Astronomy答案:C40. 听力题：The chemical symbol for samarium is _____.41. 选择题：How many sides does a hexagon have?A. FiveB. SixC. SevenD. Eight42. 填空题：The __________ is a large lake located in North America. (大湖区)43. 听力题：The puppy is ______ to the sound. (curious)44. 听力题：The chemical formula for calcium carbonate is _______.45. 填空题：I love watching _______ (企鹅) slide on ice.46. 听力题：They are ___ a game. (starting)47. 填空题：A __________ (盆栽) can be kept indoors for decoration.48. 选择题：Which of these is a type of pasta?A. SushiB. LasagnaC. Tacos答案:B49. 听力题：The capital of Uruguay is __________.50. 选择题：What type of music do we dance to?A. ClassicalB. JazzC. PopD. Opera51. 选择题：What do bees make?A. MilkB. HoneyC. JamD. Butter答案: B. Honey52. 选择题：What is the term for the amount of space an object occupies?A. MassB. VolumeC. DensityD. Weight答案: B53. 填空题：The ________ is a small fluffy animal.54. 填空题：I can use my __________ (玩具名) to __________ (动词).55. 选择题：What do you call the sound a cow makes?a. Barkb. Meowc. Mood. Quack答案:c56. 选择题：How many colors are in a traffic light?A. TwoC. FourD. Five57. 填空题：A snail carries its _________. (壳)58. 填空题：My cousin is very __________ (活泼的) and energetic.59. 选择题：How many players are on a soccer team?A. 7B. 9C. 11D. 13答案:C60. 听力题：The chemical formula for chromium(III) oxide is __________.61. 选择题：What is the name of the sweet food made from chocolate and marshmallows?A. Rocky RoadB. S'moresC. FudgeD. Brownies答案: B62. 选择题：What do you call the process of turning liquid into gas?A. FreezingB. MeltingC. EvaporationD. Condensation63. 听力题：The _______ of sound can be perceived as vibration.64. 填空题：The frog jumps from ______ (一块石头) to another.65. 填空题：The zebra is known for its unique black and _______ (白) stripes.I love visiting the _______ (地方) because I learn new things every time.67. 听力题：A chameleon's ability to change color helps it ______.68. 选择题：What do we call a story that teaches a lesson, often with animals?A. FableB. NovelC. BiographyD. Poem答案:A69. 填空题：Many ________ (文化) use plants for rituals.70. 选择题：Which animal is known for its black and white stripes?A. LeopardB. TigerC. ZebraD. Panda71. 填空题：The engineer, ______ (工程师), designs buildings and bridges.72. 听力题：The ______ helps with the filtration of water in plants.73. 听力题：The dog is _____ (running/sitting) in the yard.74. 填空题：My brother is very ______ (高).75. 选择题：Which animal is known for its long neck?A. ElephantB. GiraffeC. CamelD. Horse答案:B76. 听力题：The bear searches for _______ in the river.Wildflowers bloom in ______ (自然) settings.78. 听力题：She has a _____ (new/old) dress.79. 填空题：The _____ (大象) has a long trunk for reaching food.80. 填空题：A garden has many different types of _____ (植物).81. 听力题：A _______ is a substance that can donate hydrogen ions in a solution.82. 选择题：What do you call the place where you learn?A. HomeB. SchoolC. OfficeD. Store答案: B83. 听力题：I have a _____ (新) bike.84. 填空题：I enjoy the sound of __________ when I’m inside. (雨)85. 听力题：A ______ is a type of reaction that involves heat.86. 选择题：What do we drink from?A. CupB. PlateC. ForkD. Knife87. 听力题：The _____ (咖啡) is hot.88. 填空题：A bonsai tree is a small version of a _____ (树木).The _______ can illustrate the beauty of nature.90. 填空题：The ancient Greeks held the _______ (Olympic Games) every four years.91. 选择题：What is the fear of heights called?A. ClaustrophobiaB. AcrophobiaC. AgoraphobiaD. Nyctophobia答案: B92. 听力题：A solution that has a high concentration of ions is called a ______ solution.93. 听力题：Gases can fill any ______.94. 选择题：What is the name of the famous painting by Leonardo da Vinci?A. The Last SupperB. Mona LisaC. Starry NightD. The Scream答案:B95. 选择题：What do bees make?A. MilkB. HoneyC. BreadD. Cheese答案: B96. 选择题：What is the name of the famous river in Egypt?A. AmazonB. MississippiC. NileD. Yangtze97. 选择题：What is the main ingredient in a hamburger?A. ChickenB. FishC. BeefD. Pork98. 填空题：I can enjoy playful activities with my ________ (玩具类型).99. 选择题：What do you call the process of making bread rise?A. BakingB. ProvingC. MixingD. Kneading答案:B100. 选择题：What is the name of the plant that grows in deserts?A. FernB. CactusC. RoseD. Oak答案: B。

富马酸二甲酯介绍富马酸二甲酯（Dimethylformamide，DMF）是一种有机化合物，化学式为C3H7NO，分子量为73.091 g/mol。

它是无色透明的液体，具有特殊的气味。

DMF在工业上广泛应用于溶剂、催化剂和反应中间体，同时也被用作纺织品、塑料、颜料等行业中的处理剂或添加剂。

下面将详细介绍富马酸二甲酯的性质、制备方法、应用以及安全注意事项。

1.物理性质：富马酸二甲酯是一种极性有机溶剂，其沸点为153-155°C，密度为0.944 g/cm³，闪点为57°C。

它与水混溶，可溶于大部分有机溶剂如乙醇、乙醚、苯等。

DMF在高温下具有可燃性，与空气形成易燃混合物。

此外，富马酸二甲酯还具有较高的介电常数和表面张力。

2.制备方法：（1）乙化胺法：将甲酰氨与乙烯胺在碱的催化下反应生成，然后再与甲醇反应制备DMF。

（2）二甲胺法：将甲醇与二甲胺在催化剂的作用下反应生成二甲甲酸酯，再与碳酸二乙酯反应后脱除乙酸生成DMF。

（3）甲酰氯法：将无水甲酸与氯化氢反应生成甲酰氯，再与甲胺发生酰胺化反应生成DMF。

3.应用：（1）富马酸二甲酯作为溶剂广泛应用于化学合成、有机合成和催化反应中，能与水、醇、酮、醚等多种溶剂混溶，具有良好的溶解性能。

（2）由于DMF极性较强，因此在染料、颜料、塑料等行业中作为溶剂使用时，能有效增加色料的分散性以及颜料和塑料的染色效果。

（3）由于富马酸二甲酯在很宽的温度范围内都有较好的稳定性，因此可用于高温工艺和高分子材料的制备。

（4）富马酸二甲酯还常被用于纺织行业中的维丝、涤纶纤维和氨纶纤维的溶解、纺丝和交联等工艺过程中，可以达到良好的效果。

4.安全注意事项：（1）DMF与空气中的氧气反应生成高温、易燃的混合物，因此在储存和使用时应避免与明火、静电火花等火源接触，并保持通风良好的工作环境。

（2）富马酸二甲酯经皮肤吸收性极强，对皮肤和黏膜有刺激作用，因此在使用时应注意佩戴防护手套、眼镜等器具，避免直接接触。

BRI958/60ease, personalized treatment with12 months of hair-free smooth skin*Enjoy hassle-free, personalized treatment with the cordless version of our fastest Lumea IPL device. SenseIQ technology with smart attachments and guidance in the Lumea IPL app to give you long-lasting smooth skin.Gentle and effective for long-lasting smooth skinDeveloped with dermatologists to be easy and effectiveTreat only 2x a month for fast resultsThe only Lumea with cordless optionFull solution for face and bodyFull solution for face and body with 4 smart attachmentsSuitable for most skin tones and hair colorsPersonalized IPL hair removal treatmentOptimize your routine with the Philips Lumea IPL appGentle and comfortable with SenseIQHighlights4 smartattachmentsSpecially designed attachments perfectly fit the curves of your body and trigger the most e ffective programs for each body area when they are connected . Face : Flat design and small window with UV filter . Body : Curved inward with a large window . Bikini andA rmpit : Curved outwards for hard -to -reach areas .Philips Lumea IPLappOur free coaching app helps you plan and stick to your treatment schedule , then takes you through each session step by step .Downloaded by more than 2.1 million users .Developed withdermatologistsA s a leader in health technology , Philips developed Lumea IPL in consultation with dermatologists , for easy and e ffective use inthe safety of your home . Derived from technology used in professional salons ,Lumea IPL o ffers gentle treatment , even on sensitive areas .2x a month for fastresultsEvery 2 weeks to get started — that 's half as many treatments as other brands . Followed by touch -ups just once a month . That 's it .Covering both lower legs takes 8.5 minutes .SenseIQtechnologyLumea 9000 Series has five easily adjustable light settings . Our SmartSkin sensor reads your skin tone and helps you find the most comfortable setting . Intelligent attachments adapt treatment for each body area .Cordless if youwantFor extra convenience , Lumea 9000 Series is our only IPL with cordless functionality , which makes it even easier to reach anywhere with precision and to use it from anywhere you want .For most skin and hairtypesIPL needs contrast between the pigment in the hair color and the pigment in the skin tone , therefore works on naturally darkblonde , brown and black hair and on skin tones from fair to dark brown (I -V ).SpecificationsTechnical specs. attachmentsBody treatment attachment: Shape: Convex curved, Window size: 4.1 cm2, Tailored treatment for body: legs, arms and stomach Face treatment attachment: Shape: Flat, Window size:2 cm2,extra filter, Tailored treatment for face: upper lip, chin and jawline Bikini treatment attachment: Shape: Concave curved, Window size:3 cm2,extra filter, Tailored treatment for bikiniUnderarm treatment attachment: Shape: Concave curved, Window size: 3cm2, Tailored treatment for underarmsSafety and adjustable settingsIntegrated UV filter: Protects skin from UV light5 light energy settings: A djustable to your skin type Integrated safety system: Preventunintentional flashingSmartSkin sensor: The right setting ondemandA pplication modeSlide and Flash: For quick applicationCorded / cordless use: Both cordless andcorded useStamp and Flash: For treatment on smallareasTechnical specificationsVoltage: 100-240 VBattery type: Rechargeable batteryHigh performance lamp: Built to last,450,000 flashes, equivalent to 39 years oflamp lifetime**ServiceWarranty: 2 years global warranty + 1 extrayear of warranty upon product registrationwithin 90 daysItems includedInstructions for use: User manualStorage: Luxurious pouchA dapter: 19.5V / 4000m AA pplication timeUnderarms: 2,5 minBikini line: 2 minFace areas: 1,5 minLower legs: 8,5 min* *Median result 86% hair reduction on lower legs after12 treatments* * When following treatment schedule. Calculated foruse on lower legs, bikini, armpits and face. The lamplifetime does not extend the Philips 2 years worldwideguarantee© 2023 Koninklijke Philips N.V.A ll Rights reserved.Specifications are subject to change without notice. Trademarks are the property of Koninklijke Philips N.V. or their respective owners.Issue date 2023‑07‑11 Version: 9.9.3E A N: 87 20689 01685 8 。

2022-2023学年九上英语期末模拟试卷考生请注意：1．答题前请将考场、试室号、座位号、考生号、姓名写在试卷密封线内，不得在试卷上作任何标记。

2．第一部分选择题每小题选出答案后，需将答案写在试卷指定的括号内，第二部分非选择题答案写在试卷题目指定的位置上。

3．考生必须保证答题卡的整洁。

考试结束后，请将本试卷和答题卡一并交回。

Ⅰ. 单项选择1、________ runners took part in the half marathon(半程马拉松) in Haikou in April.A．Hundred B．Hundreds C．Hundreds of2、My mother asks me ________ computer games before finishing my homework.A．not to play B．not play C．to not play D．not playing3、He remembered ________ the windows, but they’re open now.A．closed B．close C．closing D．to close4、- I add some butter to it?- Of course. It's up to your taste.A．Must B．Would C．Will D．Can5、–What did your teacher say just now?--He asked me __________.A．how could I work it outB．when did I go to the libraryC．why I am late for schoolD．if I had get ready for the exam6、I won’t _______ working hard on the English test even if I fail it.A．enjoy B．regret C．consider D．practice7、—What do you think your life will be like________ ten years?—Yeah. I have thought about it________ three years.A．before; of B．after; in C．for;for D．in;for8、—What’s the matter with Alan?— His car broke down on the way. And . The car behind was out of control and hit Jim.A．a good miss is as good as a mile B．every dog has its dayC．the early bird catches the worm D．it never rains but it pours9、After hearing my holiday plan, Dad said; "It sounds good,__________ I don't think we have enough money." A．but B．or C．so D．and10、—What _______ cold weather!—Yes. But it's ______ unusual experience for us who always live in a hot place.A．an；an B．/；a C．/；an D．a；anⅡ. 完形填空11、I put my sunglasses on and took a deep breath. We began to walk down the street on her first day of school with her hand held tightly in mine. I knew she would be crying in a few minutes, because she always did that when she was 1 about a new environment.On the way to school, I told her repeatedly how 2 her new school life would be and expected she would feel3 . But when she saw the massive group of students everywhere, her face at once fell and the tears (眼泪) came into her eyes. ＂You can do this, sweetie. Everyone has a place in line; let’s go to find yours.＂We lined up to enter the school. Just as she was about to hold on to my leg, her friend from preschool stood next to her. Suddenly, she became 4 and reached out for her friend’s hand. And as the teacher began to 5 them all into the school, she wasn’t crying, but smiling.Honestly, I was 6 to say goodbye when I saw those little feet walk into that big building. I hid the tears behind my sunglasses and waved my hand as she walked inside.All day I 7 what she was doing. As I waited to pick her up, I felt like a child standing in line to 8 Santa. She came out with her hand waving and her arms outstretched (伸展). ＂I didn’t cry again, Mommy,＂she said, 9 hugging (拥抱)me and showing me her backpack full of goodies.During two hours of listening to the details of her day, we laughed and talked about all the 10 she had. And just l ike her, I didn’t cry again either, I knew my daughter has grown up.1．A．crazy B．careful C．curious D．nervous2．A．amazing B．comfortable C．valuable D．important3．A．safe B．relaxed C．lucky D．proud4．A．confident B．silent C．active D．serious5．A．walk B．send C．drive D．push6．A．brave B．unwilling C．happy D．natural7．A．followed B．asked C．watched D．wondered8．A．calm B．feel C．meet D．thank9．A．shyly B．excitedly C．politely D．suddenly10．A．experiences B．classes C．students D．teachersⅢ. 语法填空12、A long time ago, there was an emperor. He had a beautiful garden. In the garden, there was a little nightingale(夜莺) singing very1．(beauty).One day the emperor heard about this little bird's beautiful voice. He asked his guards to bring her to him. As soon asthe emperor heard the nightingale's voice, he said, "Put her in a golden cage, 2．she can stay and sing for me whenever I want to hear her. "The little bird was so3．(happy) about being kept in the cage that she4．(stop) singing one day. The emperor was very angry. He ordered the scientists in his palace to make a robot bird 5．him. The bird could sing very beautifully,6．. The emperor was pleased.Soon the robot bird became old. It no longer sang beautiful songs. Just at that time, the emperor became very weak. One morning, while7．(lie) in bed, the emperor wanted it to sing once again.8．the robot bird couldn't sing any more. Suddenly the nightingale landed on the window. She began to sing her9．beautiful song. The emperor was very happy! He became better and better each day.After the emperor was well，he changed a lot and became kind to his people. From then on, all his people cherished(爱戴) him for his love and10．(kind).Ⅳ. 阅读理解A13、It was a rainy night in New Orleans, US. At a bus station, I watched a young girl cry as her baggage(行李) was taken down. It seemed she’d lost her ticket. She begged the bus driver not to leave her behind.“Losing your ticket is like losing money,” the bus driver said, and left her in the rain.But then an old man stood up and blocked the driver’s way. “How can you leave that girl out there? Y ou know she had a ticket. You can’t just leave her here. You can’t leave her in a city where she doesn’t have a friend. You will m eet your schedule(日程安排), but she might meet her end.”The driver showed no sign that he’d heard or even cared about the young girl’s problem, or how her travels went.So the old gentleman said: “I’ll pay for her ticket. I’ll give her a little money to help her on her way.”He went and bought a ticket for the girl. “How can I repay the kindness you’ve shown tonight?” she asked. “We’re strangers who won’t meet again. A mere ‘thank you’ doesn’t seem right.”The old man said: “What goes around comes around. I’v e learned this with time. What you give, you always get back. Always be helpful to others and give what you can spare(分让).”1．Why was the girl’s baggage taken down from the bus?A．Because she needed to go to the hospital.B．Because the bus driver wanted to drop her.C．Because she wanted to leave for another city.D．Because it was hard to carry heavy baggage on a rainy day.2．What did the old man ask the driver to do?A．Let the girl go. B．Don’t leave the girl outC．Pay for the ticket. D．Give the girl some money.3．Which one is TRUE according to the story?A．The girl lost her ticket and bought one again.B．The old gentleman lent money to the girl for a ticket.C．The girl wanted to return the money to the old gentleman.D．The bus driver wanted the girl to leave since she lost her ticket.4．Which is close to the meaning of “What goes around comes around”?A．Do well and have well. B．Better late than never.C．Take the world as it is. D．Barking dogs never bite.B14、It is reported that some developed countries have shipped broken parts of computers to China. Last month Hong Kong officers found 131,000 kilograms of broken computers, TVs and phones sent from Japan.Things like these are called electronic waste, or e-waste. Dealing with it is not an easy job. Every time an old computer breaks down, it needs to be dealt with safely. But at present, broken computer parts are usually buried. It may be hundreds of years before they are really going in the earth（泥土）.Many places in China are polluted by e-waste. Guiyu in Guangdong Province is one of them. This town is named as “the e-waste capital of the world”. Many of the poisons(有毒物) in e-waste find their way into the environment. Plastic is burned outdoors and chemical water is poured into rivers. Greenpeace, an environmental group, has found the air, the earth and the rivers in Guiyu badly polluted.The Chinese government wants the country to develop, but we should find a way that isn’t harmful to the environment and people’s life. This year, China makes a new environment protection law, the strictest one we have ever had. Computer companies like Lenovo and Dell will be asked to take back their old computers. This is because they know best how to deal with them safely. Hopefully, the problem with e-waste will be solved in near future.1．The e-waste found in Hong Kong last month was from .A．France B．America C．Germany D．Japan2．The underline word“buried” probably means “” in the passage.A．回收B．焚烧C．掩埋D．毁灭3．The passage may be from .A．a newspaper B．a story book C．a cartoon book D．a novel4．The town of Guiyu in Guangdong Province .A．is the capital of the world B．has serious e-waste pollutionC．deals with e-waste safely D．is polluted by the waste water5．The passage is mainly about .A．the way in dealing with e-waste B．the protection of environmentC．the e-waste problem in China D．the need to pass a law again e-wasteC15、Do you have any online classes? It is possible to take classes at home. All you need is a computer and a headset(耳机).However, most students don’t seem to like online classes. 1,500 students from 10 cities t ook the survey, only 40% of the students would take such classes.Many students said it is hard to focus (集中精力) on studying while taking online classes. This was true for Lian Ruohan, 15, at No. 13 Middle School in Beijing. “There are no classmates, no re al teachers watching me. I can surf the Internet or do other things if I want to. It’s harder to always stay focused,” she said.As a coin has two sides, online classes still have advantages. It saves time and money compared to taking offline classes. And if you don’t understand some parts of a lesson, you can watch it again.1．How many students take the survey according to the passage?A．40 B．1500 C．600 D．102．What are the advantages of online classes?A．It’s easy to always focus on studying.B．Y ou can do other things on the Internet.C．It spends much more time and money.D．Y ou can watch the online classes again.D16、Why are black cats bad?November 17 is an important day for black cats in Italy. An animal rights group has named that day “Black Cat Day” t o stop the killing of thousands of the cats. Why do people____the animal so much? It is because people believe black cats bring bad luck if they walk across your path.The black cat is just one of the____of superstition(迷信）.You may already know that Wester n people don’t like the number 13. They also believe that walking under a ladder, opening an umbrella indoors and____a mirror can also bring bad luck.According to Andrew Macaskill, who works for Times , British people believe it is____to see one magpie(喜鹊). But two bring good luck. “In Britain, people like to have a horseshoes over the door. They believe it can bring good luck,” Macaskill said. “But the horseshoe needs to be the right way up. The luck____if it is upside down.”In the US, people usually spit on a new baseball bat before using it for the first time. They think this can bring good luck. Also, it is believed that good spirits live in trees. So by knocking on anything made from wood, people can call upon those spirits for protection against misfortune. People in the US also believe there are evil（邪恶的）spirits in blooms （扫帚）. So____lean a broom against a bed. The evil spirits will cast a spell on the bed.1．A．love B．keep C．hate D．raise2．A．symbols B．stories C．ways D．means3．A．buying B．breaking C．borrowing D．bringing4．A．lucky B．unlucky C．possible D．impossible5．A．throws away B．runs away C．gives away D．puts away6．A．always B．usually C．sometimes D．neverE17、Shay and his father had walked past a park where some boys Shay knew were playing baseball. Shay asked, “Do you think they’ll let me play?” Shay’s father knew that most of the boys would not want someone like Shay on their team, but the father also understood that if his son, who was disabled, were allowed to play, it would give him some confidence．Shay’s father came to one of the boys on the field and asked if Shay could play, not expecting much．The boy looked around and said, “We’re losing by six runs(分) and the game is in the eighth inning(局). I guess he can be on our team and we’ll try to put him in to bat(击球) in the final inning.Shay came to the team’s bench and put on a team shirt with a smile and his father had a small tear in his eye and warmth in his heart. The boys saw the fath er’s joy at his son being accepted.In the bottom of the eighth inning, Shay’s team scored a few runs but was still behind by three. In the top of the final inning, Shay put on a glove and played in the field. He was clearly glad just to be in the game and on the field. In the bottom of the final inning, Shay’s team scored again. Now, next was Shay at bat. Would they let Shay bat and give away their chance to win the game?Surprisingly, Shay was given the bat. Everyone knew that a hit was almost impossible. The first pitch(投) came andShay missed. The pitcher again took a few steps forward to throw the ball softly towards Shay. As the pitch came in, Shay hit a slow ground ball right back to the pitcher.The pitcher could have easily thrown the ball to the first baseman and Shay would have been out and that would have been the end of the game. Instead, the pitcher threw the ball right over the head of the first baseman, beyond the reach of all teammates, The audience and the players from both teams started scr eaming, “Shay, run to first! ” Never in his life had Shay ever run that far but made it to first base.Everyone shouted. “Run to second!” Catching his breath, Shay ran towards second. By the time Shay rounded towards second base, the smallest guy on their team, who had a chance to be the hero for his team for the first time, could have thrown the ball to the second baseman, but he understood the pitcher and he too threw the ball high and far over the third baseman’s head.All were screaming, “Shay, Shay, Shay, all the way Shay.” Shay reached third base when one opposing player ran to help him and shouted, “Shay, run to third.” As Shay rounded third, all were on their feet, crying, “Shay, run home!” Shay ran to home, stepped on the home base and was cheered as the hero who won the game for his team.That day, the boys from both teams helped bring a piece true love into this world. Shay didn’t make it to another summer and died that winter, having never forgotten being the hero and making his parents so happy!1．Why was Shay given the bat in the bottom of the final inning?A．Because the boys believed they were sure to win the game.B．Because the boys would like to help Shay enjoy the game.C．Because the boys found Shay hoped to be a winner.D．Because the boys were forced to give Shay another chance.2．The smallest boy threw the ball high and far over the third baseman’s head, probably because that boy _____. A．was clearly aware of the pitcher’s purposeB．looked forward to winning the game for his teamC．failed to throw the ball to the second basemanD．saw that Shay already reached second base3．Which of the following has nothing to do with Shay’s becoming the hero for his team?A．The pitcher did not throw the ball to the first baseman.B．The audience and the players from both teams cheered for him.C．The opposing players failed to stop his running to home.D．One of the opposing players ran to help him.4．What do you think is the theme of the story?A．True human nature could be realized in the way we treat each other.B．Everyone has his own strength even if he is disabled.C．Everyone can develop his team spirit in sports and make his parents happy.D．The results of the game should not be the only purpose of the players.F18、The homestay (寄宿家庭) provides English language students with the good chance to speak English outside the classroom and the experience of being part of an American home.What to ExpectThe host will provide places to live and meals. Rooms will be cleaned every day. And the host is there to offer help and advice on your physical and mental (精神的) health.Living AreaHost families are mainly in Zones 2, 3 and 4. Most hosts don't live in Zone 1 because much of central New York is trading center. Zones 3 and 4 often offer larger houses in uncrowded areas. But it's very convenient to travel to the center of New Y ork by subway.Meal PlansIt's important to know that few American families still provide a traditional cooked breakfast. Your breakfast mainly includes fruit juice, bread and coffee. Cheese, fruit and cold meat are not part of the breakfast. Dinners are usually made up of meat or fish with vegetables followed by dessert, fruit and coffeeFriendsIf you wish to invite a friend to visit you, you must ask your host for permission (许可) first, because some families feel uncomfortable when there are strangers at their home.1．Which of the following will the host provide?A．Room cleaning. B．A swimming pool. C．Free transport. D．Traveling guide.2．We can infer (推断) that _______ is in central New York.A．Zone 1 B．Zone 2 C．Zone 3 D．Zone 43．The passage is probably written for _______ .A．hosts who want to receive foreign studentsB．travelers planning to visit families in New YorkC．English learners who want to live in American homesD．foreigners hoping to study American cultureⅤ.书面表达19、假如你是天津的一名中学生李明，刚刚结東五一小长假的旅游回到学校。

小学下册英语第六单元测验卷(有答案)英语试题一、综合题(本题有50小题，每小题1分，共100分.每小题不选、错误，均不给分)1 The _______ (狗) loves to bark at mailmen.2 The body part that helps us breathe is called the ______.3 将图片对应的单词涂色,并将单词抄写在四线三格内。

4 The element with the chemical symbol Na is ______.5 I have a brown ___. (dog)6 The capital of Iceland is __________.7 The ________ was a defining battle in the campaign for freedom.8 The chemical formula for -pentanol is ______.9 The _____ (caterpillar) is on the leaf.10 The __________ (历史的启示) inspires action.11 A __________ is a substance that increases the rate of a reaction without being consumed.12 My dad inspires me to be __________ (勇敢的) in life.13 The three states of matter are solid, liquid, and _____.14 The teacher, ______ (老师), encourages creativity in class.15 A __________ is a narrow strip of land connecting two larger land areas. (地峡)16 What is the most popular sport in the world?A. BasketballB. SoccerC. BaseballD. Tennis17 What is the color of grass?A. BlueB. YellowC. GreenD. Red18 We have a _____ (邀请) for the wedding.19 What do you call a small, furry animal that loves to dig?A. HamsterB. RabbitC. MoleD. Squirrel答案:C20 What is the color of the sky on a clear day?A. GreenB. BlueC. OrangeD. Purple21 The _______ (青蛙) is green and brown.22 h Revolution began in __________ (1789) and led to the rise of democracy. The Fren23 The cat is ________ by the window.24 How many colors are in a rainbow?A. 5B. 6C. 7D. 825 The _____ (灌木) provide shelter for small animals.26 What do we call a type of poetry that tells a story?A. LyricB. EpicC. OdeD. Sonnet27 What is the term for a young seal?a. Pupb. Calfc. Kitd. Cub答案:a28 I saw a _______ (小鹿) grazing peacefully.29 The __________ can show evidence of past tectonic activity.30 The Amazon River is located in _______.31 What is the tallest mountain in the world?A. K2B. KilimanjaroC. Mount EverestD. Mount Fuji答案:C32 What do you use to measure length?A. ScaleB. RulerC. ClockD. Thermometer33 What sport uses a bat and ball and involves running bases?A. BasketballB. TennisC. BaseballD. Soccer答案：C34 The ________ was a famous rebellion against British rule in India.35 The mountains are _____ (tall/short) and beautiful.36 My mom loves to create ____ (recipes) for the family.37 The __________ can be classified based on their appearance.38 What is the capital of Egypt?A. CairoB. AlexandriaC. LuxorD. Giza39 What is the capital of the Bahamas?A. NassauB. FreeportC. EleutheraD. Long Island答案: A. Nassau40 We are learning about ______ (space) in class.41 The ____ lounges in the sun and enjoys the warmth.42 The engineer, ______ (工程师), works on building projects.43 The _____ (小羊) frolics in the sunny meadow. 小羊在阳光明媚的草地上嬉戏。

Table.Spearman Correlations between CRISS and individual components at12months and Comparison of ABA and PBO using CRISS index and individual components at12 months;Outcome ABAN=44PBON=44TreatmentDifference(ABA-PBO)P-value^ACR CRISS(0.0-1.0) median(IQR)0.68(1.00)0.01(0.86)0.03 SpearmanCorrelationLSmean(SE)LSmean(SE)LS mean(SE)P-value^^D mRSS(0-51)-0.75*-6.7(1.30)-3.8(1.23)-2.9(1.75)0.10D FVC%predicted0.36*-1.4(1.30)-3.1(1.20)1.7(1.72)0.32D PTGA(0-10)-0.17-0.50(0.392)-0.30(0.385)-0.20(0.557)0.73D MDGA(0-10)-0.47*-1.34(0.282)-0.18(0.284)-1.16(0.403)0.004D HAQ-DI(0-3)-0.21-0.11(0.079)0.11(0.076)-0.22(0.108)0.05^p-value for treatment comparisons based on Van Elteren test^^p-value for treatment comparisons based on ANCOVA model with treatment,duration of SSc and baseline value as covariates*p<0.01using Spearman correlation coefficientNegative score denotes improvement,except for FVC%where negative score denotes worsening;LS mean=least squares mean;SE=standard errorFRI0328BRANCHED CHAIN AMINO ACIDSIN THE TREATMENTOF POLYMYOSITIS AND DERMATOMYOSITIS:RESULTSFROM THE BTOUGH STUDYNaoki Kimura,Hitoshi Kohsaka.Tokyo Medical and Dental University(TMDU), Department of Rheumatology,Tokyo,JapanBackground:Muscle functions of patients with polymyositis and dermato-myositis(PM/DM)remain often impaired even after successful control of the immune-mediated muscle injury by immunosuppressive therapy.The only effort at the present to regain muscle functions except for the immu-nosuppression is rehabilitation,which is carried out systematically in lim-ited institutes.No medicines for rebuilding muscles have been approved. Branched chain amino acids(BCAA)promote skeletal muscle protein syn-thesis and inhibit muscle atrophy.They thus have positive effects on muscle power,but have never been examined for the effects on PM/DM patients.Objectives:To assess the efficacy and safety of BCAA in the treatment of PM/DM for official approval of their use in Japan.Methods:Untreated adults with PM/DM were enrolled in a randomized, double-blind trial to receive either TK-98(drug name of BCAA)or pla-cebo in addition to the conventional immunosuppressive agents.One package of TK-98(4.15g)contained L-isoleucine952mg,L-leucine 1904mg,and L-valine1144mg(molar ratio is1:2:1.35),and6packages were administered daily in3divided doses.After12weeks,patients with average manual muscle test(MMT)score less than9.5were enrolled in an open label extension study for12weeks.The primary end point was the change of the MMT score at12weeks.The secondary end points were the disease activity evaluated with myositis disease activity core set (MDACS)and the change of functional index(FI),which evaluates dynamic repetitive muscle functions.Results:Forty-seven patients were randomized to the TK-98(24patients [12with PM and12with DM])and placebo(23patients[11with PM and12with DM])groups.The baseline MMT scores were equivalent (7.97±0.92[mean±SD]in the TK-98group and7.84±0.86in the placebo group).The change of MMT scores at12weeks were0.70±0.19(mean ±SEM)and0.69±0.18,respectively(P=0.98).Thirteen patients from the TK-98group and12from the placebo group were enrolled in the exten-sion study.The MMT scores in both groups improved comparably throughout the extension study.The increase of the FI scores of the shoulder flexion at12weeks was significantly larger in the TK-98group (27.9±5.67and12.8±5.67in the right shoulder flexion[P<0.05],27.0±5.44and13.4±5.95in the left shoulder flexion[P<0.05]).The improvement rate of the average FI scores of all tested motions(head lift,shoulder flexion,and hip flexion)through the first12weeks was larger in the TK-98group.No difference was found in the disease activ-ity throughout the study period.Frequencies of the adverse events until 12weeks were comparable.Conclusion:Although BCAA exerted no effects in the improvement of the muscle strength evaluated with MMT,they were effective in the improve-ment of dynamic repetitive muscle functions in patients with PM/DM with-out significant increase of adverse events.Disclosure of Interests:None declaredDOI:10.1136/annrheumdis-2019-eular.5235FRI0329ANALYSIS OF11CASES OF ANTI-PL-7ANTIBODYPOSITIVE PATIENTS WITH IDIOPATHIC INFLAMMATORYMYOPATHIES.MALIGNANCY MAY NOT BE UNCOMMONCOMPLICATION IN ANTI-PL-7ANTIBODY POSITIVEMYOSITIS PATIENTSTaiga Kuga,Yoshiyuki Abe,Masakazu Matsushita,Kurisu Tada,Ken Yamaji, Naoto Tamura.Juntendo University School of Medicine,Department of Internal Medicine and Rheumatology,Tokyo,JapanBackground:Various autoantibodies are known to be related to idiopathic inflammatory myopathies(IIM).Anti-PL-7antibody is anti-threonyl-tRNA synthetase antibody associated with antisynthetase syndrome(ASS).Since anti-PL-7antibody is rare(mostly1-4%of myositis,while a Japanese study reported17%),little is known as to clinical characteristics of it(1). Objectives:To analyze clinical characteristics of anti-PL-7positive IIM patients.Methods:Anti-PL-7antibody was detected by EUROLINE Myositis Profile 3.IIM diagnosis was made by the2017EULAR/ACR classification criteria (2)and/or Bohan And Peter classification(3).Eleven anti-PL-7antibody positive adult patients(all female),age at onset(61.5±12.6years)were enrolled in this study between2009and2018.Clinical manifestations, laboratory and instrumental data were reviewed in this single centre retro-spective cohort.Results:Characteristic symptoms were identified at diagnosis:skin mani-festations(7/11cases,63.6%),muscle weakness(8/11cases,72.7%), arthralgia(5/11cases,45.5%)and Raynaud’s phenomenon(4/11cases, 36.4%).Myogenic enzymes were elevated in most cases(10/11cases, 90.9%).ILD was detected in all patients(11/11cases,100%)and2 patients(18.2%)developed rapidly progressive rgest IIM subtype was polymyositis(PM,5/11cases),followed by dermatomyositis(DM,3/ 11cases)and amyopathic dermatomyositis(ADM,3/11cases).Five patients(45.5%)complicated with malignancy within3years from the diagnosis of IIM.Though clinical manifestations and laboratory data showed any difference between malignancy group and non-malignancy group,all3ADM cases but no DM cases complicated with malignancy in this study.Conclusion:Anti-PL-7antibody positive IIM patients frequently complicated with ILD.Frequency of cancer in ASS patients within three years from diagnosis was 1.7%and not much different from the general population in previous report from France(4).Though this study only included IIM patients and may have selection bias,careful malignancy survey may be essential in Anti-PL-7antibody positive IIM patients.REFERENCES:[1]Y Yamazaki,et al.Unusually High Frequency of Autoantibodies to PL-7Associated With Milder Muscle Disease in Japanese Patients With Poly-myositis/DermatomyositisARTHRITIS&RHEUMATISM Vol.54,No.6, June2006,pp2004–2009[2]Lundberg IE,Tjärnlund A,Bottai M,et al.EULAR/ACR classification crite-ria for adult and juvenile idiopathic inflammatory myopathies and their Major Subgroups.Ann Rheum Dis.2017;76:1955–64.[3]Bohan A,Peter J.Polymyositis and dermatomyositis.N Engl J Med1975,292:344-347;403-407.[4]Hervier B,et al.Hierarchical cluster and survival analyses of antisynthe-tase syndrome:phenotype and outcome are correlated with anti-tRNA syn-thetase antibody specificity.Autoimmunity reviews.2012;12:210–217. Disclosure of Interests:Taiga Kuga:None declared,Yoshiyuki Abe:None declared,Masakazu Matsushita:None declared,Kurisu Tada Grant/ research support from:Eli Lilly,Ken Yamaji:None declared,Naoto Tamura Grant/research support from:Astellas Pharma Inc.,Asahi Kasei Pharma,AYUMI Pharmaceutical Co.,Chugai Pharmaceutical Co.LTD, Eisai Inc.,:Takeda Pharmaceutical Company Ltd.,Speakers bureau:Jans-sen Pharmaceutical K.K.,Bristol-Myers Squibb K.K.,:Mitsubishi Tanabe Pharma Co.DOI:10.1136/annrheumdis-2019-eular.4150846Friday,14June2019Scientific Abstractson December 25, 2023 by guest. Protected by copyright./Ann Rheum Dis: first published as 10.1136/annrheumdis-2019-eular.5235 on 27 May 2019. Downloaded from。