2014/12/06 15:59
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Thermo Scientific ITQ 900气相色谱质谱联用(GC/MS)仪
型号: ITQ 900
产地: 美国
品牌: 赛默飞
¥100万 - 150万
参考报价
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Thermo Fisher TRACE GCxGC 气相色谱
型号: TRACE GCxGC
产地: 美国
品牌: 赛默飞
¥30万 - 50万
参考报价
联系电话
Thermo Fisher TRACE GC Ultra气相色谱
型号: TRACE GC Ultra
产地: 美国
品牌: 赛默飞
¥30万 - 50万
参考报价
联系电话
Thermo Fisher TSQ 8000三重四极杆GC-MS/MS
型号: TSQ 8000
产地: 美国
品牌: 赛默飞
¥50万 - 100万
参考报价
联系电话
Thermo Fisher FOCUS GC 气相色谱仪
型号: FOCUS GC
产地: 美国
品牌: 赛默飞
¥30万 - 50万
参考报价
联系电话
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台阶仪在三维形貌表征领域的应用
Stylus-based surface profiling is a standard technique for accurate, repeatable surface shape, topography and step height measurement in applications ranging from semiconductor R&D to solar cell QC.
2008/12/15
NanoBrook产品应用-12-ZetaPALS
文献名: Structural, morphological and optical properties of Bi NPs obtained by laser ablation and their selective detection of L-cysteine 作者: Ramon Gabriel Teixeira Rosaa, Celso de Araujo Duartea , Wido Herwig Schreinera, Ney Pereira Mattoso Filhoa, Arandi Ginane Bezerra Jr.b, Andersson Barisonc, Fernanda Maria Marins Ocamposc a Departamento de Física, Universidade Federal do Paraná Centro Politécnico, CP 19044, 81531-990 Curitiba (PR), Brazil b Departamento Acadêmico de Física, Universidade Tecnológica Federal do Paraná, 80230-901 Curitiba (PR), Brazil c Departamento de Química, Universidade Federal do Paraná Centro Politécnico, CP 19081, 81531-990 Curitiba (PR), Brazil 摘要:In the present work we show the results of the investigation of the properties of bismuth nanoparticles (NPs) obtained by the laser ablation in water. The samples were characterized by various techniques: UV/vis spectroscopy, dynamic light scattering, transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, nuclear magnetic resonance and zeta potential. The NPs were metallic and surface oxidated, exhibiting absorption peak at 257 nm due to the surface plasmon resonance. The interaction between the NPs and various amino acids was studied and revealed a selective sensibility to cysteine on a range of concentration from 80 to 720 μM, which we attribute to a dimerization of cysteine to cystine probably complexed to the nanoparticle surface by electrostatic interactions, leading to the modification of the NP absorption spectrum. 关键词:Bismuth; Nanoparticles; Laser ablation; Cysteine
2015/04/16
Milli-Q IX 纯水系统:溶出度检测纯水解决方案
纯水是制备溶出溶剂或生物相关溶液的重要成分,因此水质的好坏会影响结果。一旦水质选择不当,就会引入污染物,主要有以下几种类型。使用高质量纯水来制备溶出溶剂,是获取精确、可重现结果并满足监管要求的重要保障。
制药/生物制药
2020/07/29
Thermo Scientific Ramina 过程分析仪在生物制药行业的应用
Ramina过程分析仪为离线手动或自动湿态化学测试提供了一种快速且易于操作的替代方案。相比于传统的拉曼过程监控系统,它的安装和使用变得更加简单。Ramina为用户开始收集数据提供了所需的全部设备,包括拉曼光谱仪和光纤探针,以及便携式监视器、鼠标、键盘和激光安全护目镜。工厂校准可确保Ramina系统随时能够投入使用,其固态结构提供了长期稳定性。这意味着用户可以进行连续、高精度的测量,而无需频繁校准。用户还可以并联使用多个系统来同时测试不同的反应容器,或者在一个反应容器中组合使用多个探针。
制药/生物制药
2022/04/25