{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":2,"startPagecode":1},"records":[{"abstractinfo":"设计制作了一种用聚四氟乙烯毛细管组成的ubbelodhe式粘度计.将该粘度计试用于测量一个部分水解聚丙烯酰胺试样水溶液在较宽浓度区间直至极稀浓度时的粘度.与常规玻璃粘度计相比,新粘度计避免了在普通玻璃粘度计中测量粘度时由于高分子吸附在毛细管管壁表面引起的干扰.实验结果表明,高分子溶液粘度的所谓“聚电解质效应”仅仅是溶质吸附而引起的表观现象.","authors":[{"authorName":"佳利","id":"1d642ab2-b5f3-4c39-a0aa-c761f58c8f20","originalAuthorName":"蔡佳利"},{"authorName":"薄淑琴","id":"d71257a4-0e02-4f69-8fee-60f71ac97b66","originalAuthorName":"薄淑琴"},{"authorName":"秦汶","id":"b21c5940-3236-4382-b6ad-965a79b4a283","originalAuthorName":"秦汶"},{"authorName":"严小虎","id":"7a6e7987-71fc-4627-b3c8-a5c64587b45b","originalAuthorName":"严小虎"},{"authorName":"程镕时","id":"b2b62362-3efa-4fad-a0af-9582a457667b","originalAuthorName":"程镕时"}],"doi":"10.3969/j.issn.1000-0518.2001.05.020","fpage":"377","id":"2e1e8135-191e-46f3-ba42-49a40df767d0","issue":"5","journal":{"abbrevTitle":"YYHX","coverImgSrc":"journal/img/cover/YYHX.jpg","id":"73","issnPpub":"1000-0518","publisherId":"YYHX","title":"应用化学"},"keywords":[{"id":"724b2516-9db5-4a44-b4a4-aa3548de1a3c","keyword":"改进型乌氏粘度计","originalKeyword":"改进型乌氏粘度计"},{"id":"15567bf7-38e6-4169-8e18-8cd6d08a75e4","keyword":"聚四氟乙烯毛细管","originalKeyword":"聚四氟乙烯毛细管"},{"id":"d256830b-f202-4092-b8cc-24c1718c287a","keyword":"高分子溶液","originalKeyword":"高分子溶液"},{"id":"2870becb-2ec9-470a-a24d-79ac3195c155","keyword":"聚电解质粘度效应","originalKeyword":"聚电解质粘度效应"}],"language":"zh","publisherId":"yyhx200105020","title":"一种聚四氟乙烯毛细管Ubbel0dhe粘度计","volume":"18","year":"2001"},{"abstractinfo":"手性环氧化物是用途很广的中间体,通过区域和立体选择性开环反应,手性环氧化物能转化为多种对映纯的手性化合物.烯烃不对称环氧化反应是制备光学活性环氧化物的重要途径,在医药、农药和香料等精细化学品合成中具有非常重要的意义.由于salen Mn(Ⅲ)化合物在非官能团化烯烃的不对称环氧化反应中表现出高的催化活性和对映选择性,以及相对于均相手性催化,非均相手性催化具有产品易于分离和催化剂可重复利用等优点,因而成为手性催化领域的研究热点.近年来关于手性salenMn(Ⅲ)化合物的固载化研究受到广泛关注.虽然均相Mn(salen)催化剂在不对称环氧化反应方面已取得很大进展,但是在反应后处理、催化剂分离回收以及产品纯化方面也存在一定缺陷.多相salen Mn(Ⅲ)催化体系与均相催化体系相比,具有催化剂易分离回收、环境友好、产物易纯化、操作成本低和可以使用连续流反应器以及大规模生产等优点.因为在均相催化体系中,Mn(salen)Cl可能形成无活性的μ-oxo-Mn(Ⅳ)二聚体,而将salen Mn(Ⅲ)催化剂固载后则可以抑制这种二聚体的形成,并且将salen Mn(Ⅲ)催化剂多相化之后还可以促使活性位点的分离,进而增加催化剂的稳定性和保持单催化活性中心的高催化活性.本课题组近年来探索了磷酸锆与聚苯乙烯这类典型的有机功能高分子的复合,制备了一系列有机-无机杂化材料如聚(苯乙烯-异丙烯膦酸)-磷酸氢锆(ZPS-IPPA)和聚(苯乙烯-苯乙烯基膦酸)-磷酸氢锆(ZPS-PVPA),以这一系列材料为载体,通过对载体中的苯环进行氯甲基化,再接枝磺烃基、胺基或苯氧基等连接基团制备了多种非均相手性salen Mn(Ⅲ)催化剂.所制备的这些多相催化剂在催化活性、稳定性和循环使用性等方面显示出优良性能.本文在上述研究基础上,在ZnPS-PVPA的苯环上引入氯甲基,然后通过接枝芳香二胺和脂肪二胺最后轴向配位固载手性salen Mn(Ⅲ),实现了手性salen-Mn(Ⅲ)均相催化剂的多相化.并运用FT-IR,UV-Vis,XRD,TG,TEM,SEM和N2吸附-脱附等测试手段对多相催化剂进行了表征.分别以NaClO、m-CPBA和NaIO4为氧化体系考察了固载手性salen-Mn(Ⅲ)催化剂催化苯乙烯、α-甲基苯乙烯及茚的不对称环氧化反应的性能,对不同的氧化体系存有选择性;同时考察了温度、时间及溶剂等因素对催化性能的影响.考察了不同连接基团修饰的ZnPS-PVPA固载的手性salen-Mn(Ⅲ)在催化烯烃环氧化方面是否具有很好的催化性能和对映选择性.考察了助催化剂在不同的氧化体系中是否扮演着不同的角色.催化数据显示,助催化剂NMO和咪唑在催化反应中起着不同的作用.在m-CPBA氧化体系中,添加助催化剂NMO不但不能改善催化性能反而降低催化活性;在NaIO4氧化体系中,添加助催化剂咪唑略微改善了催化性能.选择催化效果最好的催化剂在m-CPBA催化体系中考察其重复使用性能,结果表明,多相催化剂经过9次循环使用,仍然显示出较好的催化性能.选择催化性能最好的多相催化剂进行环氧化反应的放大反应,结果显示,当放大倍数达到100倍时仍显示出与实验计量相当的催化性能,其转化率和ee值最高均可超过99%,具有潜在的工业应用价值.","authors":[{"authorName":"黄静","id":"1dc2cddb-51ae-47ee-94d2-5aa9c232194b","originalAuthorName":"黄静"},{"authorName":"罗燕","id":"a364ee90-63b6-41fb-bc6d-ac5d0867fd7e","originalAuthorName":"罗燕"},{"authorName":"佳利","id":"5efe306f-03b2-452e-8750-20a52744ada6","originalAuthorName":"蔡佳利"}],"doi":"10.1016/S1872-2067(16)62489-0","fpage":"1539","id":"f65a728f-8582-497c-8da9-89fa10c5828d","issue":"9","journal":{"abbrevTitle":"CHXB","coverImgSrc":"journal/img/cover/CHXB.jpg","id":"18","issnPpub":"0253-9837","publisherId":"CHXB","title":"催化学报 "},"keywords":[{"id":"5555a69c-5c01-461f-b77e-fc5415bbfe02","keyword":"手性salen-Mn(Ⅲ)","originalKeyword":"手性salen-Mn(Ⅲ)"},{"id":"2a3cfcc7-b6c5-40f8-b4d2-a55e27f648ce","keyword":"芳香二胺","originalKeyword":"芳香二胺"},{"id":"6a30b500-44ac-45c8-a939-585c60a90857","keyword":"脂肪二胺","originalKeyword":"脂肪二胺"},{"id":"37cc1665-76de-4133-82c3-de6c350b386a","keyword":"烯烃不对称环氧化","originalKeyword":"烯烃不对称环氧化"},{"id":"971b5c40-4704-48f3-a4e7-423197a4a756","keyword":"聚(苯乙烯-苯乙烯基膦酸)-磷酸锌","originalKeyword":"聚(苯乙烯-苯乙烯基膦酸)-磷酸锌"}],"language":"zh","publisherId":"cuihuaxb201609014","title":"胺基修饰的ZnPS-PVPA固载手性salen Mn(Ⅲ)高效催化非功能化烯烃不对称环氧化反应","volume":"37","year":"2016"},{"abstractinfo":"矿山金属平衡通过矿山金属产量实现了地质资源储量模型与矿山实际生产数据有机的结合,它涉及到储量评估、采矿计划、品位控制、矿山测量、选矿流程和产品销售等各个矿山生产环节.以家营矿为例详细介绍了矿山金属平衡的操作步骤,实施矿山金属平衡不但可以评估矿山生产运作过程中财务现金流的风险,而且更重要的是运用实际品位数据来检验矿体矿块模型对采矿品位预计的可信度.","authors":[{"authorName":"梁涛","id":"4db6c0b4-2849-48c9-8284-1924cd18346c","originalAuthorName":"梁涛"},{"authorName":"卢仁","id":"12f6c54d-476c-4ec6-9349-0d1d5b907b04","originalAuthorName":"卢仁"},{"authorName":"吕胜利","id":"798ec94f-56a6-4a6b-b2b1-4d7b2dba45bf","originalAuthorName":"吕胜利"},{"authorName":"王书军","id":"1eb66d1f-a26a-46ac-bb0f-17754796659f","originalAuthorName":"王书军"},{"authorName":"刘明月","id":"db9462e3-990f-49cc-869b-2eb9e19d8516","originalAuthorName":"刘明月"},{"authorName":"张四维","id":"9704dcd6-3761-42e1-90a9-abd06a6f03c3","originalAuthorName":"张四维"}],"doi":"10.3969/j.issn.1001-1277.2010.09.008","fpage":"33","id":"276f67c7-9926-4144-b980-ca476b438ce6","issue":"9","journal":{"abbrevTitle":"HJ","coverImgSrc":"journal/img/cover/HJ.jpg","id":"44","issnPpub":"1001-1277","publisherId":"HJ","title":"黄金"},"keywords":[{"id":"59adb483-d722-4ab6-a33e-869876754a12","keyword":"矿山金属平衡","originalKeyword":"矿山金属平衡"},{"id":"b70fda73-0fee-4ebe-8ee1-5edf570404b1","keyword":"Micromine软件","originalKeyword":"Micromine软件"},{"id":"5eac0457-2b20-4ee9-9e7b-46993907204e","keyword":"家营矿","originalKeyword":"蔡家营矿"}],"language":"zh","publisherId":"huangj201009008","title":"矿山金属平衡的应用——以家营矿为例","volume":"31","year":"2010"},{"abstractinfo":"在工艺矿物学研究的基础上对含金0.084 g/t、硫2.74%的陕西川铜尾矿进行了金的强化回收技术研究.结果表明,含金铜尾矿经过一次粗选、一次精选、一次扫选闭路流程可获得硫品位43.34%、回收率44.30%的硫精矿,其中金品位为1.26g/t、回收率为42.06%,达到计价标准.另外矿石中的银和镓元素也得到了一定程度的回收.理论分析结果显示,组合药剂的使用可大幅度提高含金矿物的选别效果,Y-89和丁基铵黑药的组合属于正—负型协同药剂,药剂基团中硫原子的Mulliken电荷分布是影响捕收剂选别性能的关键因素.","authors":[{"authorName":"刘明宝","id":"56fb3e34-3b54-4489-9bf7-82c08366462d","originalAuthorName":"刘明宝"},{"authorName":"杨超普","id":"e833885d-42ff-4dd3-a39e-666936e47fe5","originalAuthorName":"杨超普"},{"authorName":"阎赞","id":"1bea5843-bdd1-4e40-96d2-d451a868d4ee","originalAuthorName":"阎赞"},{"authorName":"印万忠","id":"c641e8f4-946b-41d9-94d4-78e7fb636315","originalAuthorName":"印万忠"}],"doi":"10.3969/j.issn.2095-1744.2016.05.013","fpage":"61","id":"0e228049-8998-421c-9974-9b7ac7be17a9","issue":"5","journal":{"abbrevTitle":"YSJSGC","coverImgSrc":"journal/img/cover/YSJSGC.jpg","id":"76","issnPpub":"2095-1744","publisherId":"YSJSGC","title":"有色金属工程"},"keywords":[{"id":"a81e098e-e47c-4fb2-8b06-a6e17609a946","keyword":"铜尾矿","originalKeyword":"铜尾矿"},{"id":"3deeda17-63a5-42a6-b747-abf688732cc2","keyword":"协同药剂","originalKeyword":"协同药剂"},{"id":"8c0e1c8f-f808-4870-91e6-fa75ff442474","keyword":"Mulliken电荷","originalKeyword":"Mulliken电荷"}],"language":"zh","publisherId":"ysjs201605013","title":"陕西川铜矿含金铜尾矿中金的回收","volume":"6","year":"2016"},{"abstractinfo":"","authors":[{"authorName":"任奋华","id":"2a5b4689-c62a-4960-8eb2-6567c990c681","originalAuthorName":"任奋华"}],"doi":"10.3969/j.issn.1000-6826.2014.01.02","fpage":"4","id":"1c40aff9-dee8-40ea-a8c8-c489e460ba13","issue":"1","journal":{"abbrevTitle":"JSSJ","coverImgSrc":"journal/img/cover/3abe017a-2574-4821-8152-4ae974ef0471.jpg","id":"47","issnPpub":"1000-6826","publisherId":"JSSJ","title":"金属世界"},"keywords":[{"id":"8e811965-276b-46fd-8dd8-070856ff5f74","keyword":"","originalKeyword":""}],"language":"zh","publisherId":"jssj201401002","title":"美峰院士主要学术成就和学术贡献","volume":"","year":"2014"},{"abstractinfo":"","authors":[{"authorName":"刘蕊","id":"93c831ad-10b7-4a10-857f-b8e8da3ee185","originalAuthorName":"刘蕊"}],"doi":"10.3969/j.issn.1000-6826.2014.01.01","fpage":"1","id":"6d20aacd-b773-41ad-9445-fe85c129b7e3","issue":"1","journal":{"abbrevTitle":"JSSJ","coverImgSrc":"journal/img/cover/3abe017a-2574-4821-8152-4ae974ef0471.jpg","id":"47","issnPpub":"1000-6826","publisherId":"JSSJ","title":"金属世界"},"keywords":[{"id":"14566ad4-62b0-4252-bb81-3f48146ff780","keyword":"","originalKeyword":""}],"language":"zh","publisherId":"jssj201401001","title":"美峰:苦孩子长成大院士","volume":"","year":"2014"},{"abstractinfo":"采用薄壁圆筒扭转的试验方法测定碳纤维/环氧树脂复合材料的面内剪切性能,得到了碳纤维/环氧树脂复合材料的面内剪切模量与剪切强度结果.最后将试验结果与4种经验公式估算结果对比,得出-韩修正公式对面内剪切模量的估算结果接近试验值.","authors":[{"authorName":"孙炳君","id":"ee4cf278-3c10-4bc0-aa4b-decc15004622","originalAuthorName":"孙炳君"},{"authorName":"王俊","id":"1f95dfdc-fd71-41ac-b0d8-b4180aa040de","originalAuthorName":"王俊"},{"authorName":"迟蕾","id":"e7f98809-cdf2-4368-8b64-687acc1edc02","originalAuthorName":"迟蕾"}],"doi":"","fpage":"187","id":"3f733507-f2fe-4de2-9611-63619f2a96cf","issue":"z3","journal":{"abbrevTitle":"CLDB","coverImgSrc":"journal/img/cover/CLDB.jpg","id":"8","issnPpub":"1005-023X","publisherId":"CLDB","title":"材料导报"},"keywords":[{"id":"c824d975-47da-4d4c-92e4-e0419c01ed0d","keyword":"薄壁圆筒","originalKeyword":"薄壁圆筒"},{"id":"5737a280-5d2b-4e1a-8d59-2283ba59a9be","keyword":"扭转","originalKeyword":"扭转"},{"id":"02cce7c9-7546-441a-bed5-9d6afa26110e","keyword":"经验公式","originalKeyword":"经验公式"}],"language":"zh","publisherId":"cldb2008z3060","title":"碳纤维复合材料面内剪切性能试验研究","volume":"22","year":"2008"},{"abstractinfo":"实验分析了锌镍合金电沉积过程中温度、导电盐、添加剂量和pH值等工艺参数对镀层镍含量的影响.着重考了pH值与添加剂之间的相互作用及其匹配关系对镀层镍含量的影响.发现pH值在有无添加剂时对镀层镍含量的影响规律不同,并试用极化曲线分析其原因.","authors":[{"authorName":"欧雪梅","id":"33f268d5-c95a-4dfa-b03e-f3a1caea1b38","originalAuthorName":"欧雪梅"},{"authorName":"易春龙","id":"579bf0c0-917d-4ad4-87d9-f7537cab56a2","originalAuthorName":"易春龙"},{"authorName":"孙寅","id":"af63a93f-0f08-4898-9593-9799b0d8a08c","originalAuthorName":"孙寅"},{"authorName":"王锐","id":"61c7ccf3-a156-44f9-b044-70adfcf54d17","originalAuthorName":"王锐"},{"authorName":"喻尊璞","id":"23937dda-b728-455c-9eb6-0d61ce02d796","originalAuthorName":"喻尊璞"}],"doi":"10.3969/j.issn.1001-3660.2001.04.003","fpage":"6","id":"5ff6b9c9-06bc-41f7-8d5a-e4f57289e575","issue":"4","journal":{"abbrevTitle":"BMJS","coverImgSrc":"journal/img/cover/BMJS.jpg","id":"3","issnPpub":"1001-3660","publisherId":"BMJS","title":"表面技术 "},"keywords":[{"id":"37c6c48c-ed80-4bab-9e4b-6dea57f9b228","keyword":"锌镍合金","originalKeyword":"锌镍合金"},{"id":"3d07cdb0-65d6-43dd-a5a1-0169c77aa703","keyword":"镀层","originalKeyword":"镀层"},{"id":"40f1ecdc-22f2-4c1f-8c9d-47700873995c","keyword":"工艺参数","originalKeyword":"工艺参数"},{"id":"f26bf90e-9ffa-44f1-a9c7-23760b43801c","keyword":"镍含量","originalKeyword":"镍含量"}],"language":"zh","publisherId":"bmjs200104003","title":"电沉积工艺对锌镍合金镀层镍含量的影响","volume":"30","year":"2001"},{"abstractinfo":"基于微分几何推导出了不等极孔椭球类容器纤维缠绕的非测地线稳定缠绕方程,并根据薄膜理论、层合板理论、-吴失效准则得到了赤道处纤维层的最小厚度1.281 7 mm,计算出的纤维方向的应力小于纤维的极限强度3.92 GPa.发现纤维缠绕椭球容器的应力状态是赤道处最先发生破坏,且会出现局部失效现象.以缠绕层最小质量M为目标函数,-吴失效准则为约束条件,在给定内压5 MPa的情况下,得到了优化后的容器质量为34.072 kg.相比于等极孔的容器而言,非测地线缠绕具有高度非线性、不稳定性及精度难以控制等问题.","authors":[{"authorName":"王荣","id":"010b4731-ced0-4e76-b3ef-153f18213542","originalAuthorName":"王荣"},{"authorName":"何钦象","id":"7f2ff5b2-2c8b-4e70-9e34-a963bd59301c","originalAuthorName":"何钦象"},{"authorName":"祖磊","id":"1cc23578-e302-47c2-a97b-a665d7a757c3","originalAuthorName":"祖磊"}],"doi":"10.3969/j.issn.1007-2330.2014.04.004","fpage":"25","id":"91beb900-b243-4240-8ac5-176798a9a552","issue":"4","journal":{"abbrevTitle":"YHCLGY","coverImgSrc":"journal/img/cover/YHCLGY.jpg","id":"77","issnPpub":"1007-2330","publisherId":"YHCLGY","title":"宇航材料工艺 "},"keywords":[{"id":"e91feb4f-3b33-4286-97a2-7e1fcdc81d15","keyword":"不等极孔","originalKeyword":"不等极孔"},{"id":"310d9ae7-1c80-41a6-b83d-dfb4cf9fa880","keyword":"纤维缠绕","originalKeyword":"纤维缠绕"},{"id":"00e46863-45a4-4e61-b6c2-83f59f095d76","keyword":"非测地线","originalKeyword":"非测地线"},{"id":"fdb7739d-84e2-4329-b304-5396b29bc6ee","keyword":"优化","originalKeyword":"优化"}],"language":"zh","publisherId":"yhclgy201404004","title":"纤维缠绕不等极孔椭球类容器的应力分析及优化","volume":"44","year":"2014"},{"abstractinfo":"采用加速溶剂萃取-高效液相色谱法测定了武汉市6个远城区(甸、东西湖、汉南、黄陂、江夏、新洲)农田土壤样品中16种多环芳烃(PAHs)的含量.结果表明,研究区土壤中16种PAHs总量范围为12.86-876.82μg·kg-1,平均含量为122.64μg·kg-1,土壤中PAHs以中高环PAHs为主.通过因子分析法和异构体比值法分析,研究区土壤中PAHs主要为化石燃烧来源(包括汽油燃烧和柴油燃烧)、生物质或煤炭燃烧来源.采用毒性当量评价方法对研究区土壤PAHs进行潜在致癌性分析,结果表明土壤中PAHs潜在致癌性较低.","authors":[{"authorName":"贺小敏","id":"baffbfe3-e483-466d-bec3-0fc9a72cdb41","originalAuthorName":"贺小敏"},{"authorName":"李爱民","id":"0f74e523-f455-4037-a121-76fac28efb71","originalAuthorName":"李爱民"},{"authorName":"吴昊","id":"e86fb7ca-e491-4636-941c-d6bc2fbe1711","originalAuthorName":"吴昊"},{"authorName":"施敏芳","id":"271a2cc9-7926-4209-939b-133fae18adb0","originalAuthorName":"施敏芳"},{"authorName":"陈浩","id":"5311d911-c034-4634-8b0a-0be96ff6f696","originalAuthorName":"陈浩"}],"doi":"10.7524/j.issn.0254-6108.2015.11.2015041801","fpage":"2139","id":"11bfe23d-41a1-4f59-8012-db375d8139d3","issue":"11","journal":{"abbrevTitle":"HJHX","coverImgSrc":"journal/img/cover/HJHX.jpg","id":"43","issnPpub":"0254-6108","publisherId":"HJHX","title":"环境化学 "},"keywords":[{"id":"5b5f42b1-4152-41c0-8dc5-4570b3bc89e0","keyword":"多环芳烃","originalKeyword":"多环芳烃"},{"id":"d6930a3d-4b81-4fb8-ae54-6c4c4a0a9004","keyword":"农田土壤","originalKeyword":"农田土壤"},{"id":"b9f56ca4-5511-4133-88f1-bb455a59db27","keyword":"分布","originalKeyword":"分布"},{"id":"5c6375b0-c0f2-42fb-b05b-72f49fb0d0c9","keyword":"来源","originalKeyword":"来源"},{"id":"008c348b-e309-47de-8c0e-3df135e856e5","keyword":"风险评价","originalKeyword":"风险评价"},{"id":"257b1687-720e-4313-a3e4-da25c144b15b","keyword":"武汉市","originalKeyword":"武汉市"}],"language":"zh","publisherId":"hjhx201511024","title":"武汉市远城区农田土壤中多环芳烃的分布特征、来源和风险评价","volume":"34","year":"2015"}],"totalpage":2,"totalrecord":18}