电梯噪声测量仪器配置方案

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

安捷伦提供多种独特的高质量 Seahorse XF 分析试剂盒、试剂和培养基，用于研究细胞能量代谢功能并实时评估线粒体和糖酵解功能。以简化实验程序和提高研究效率为设计宗旨，使用这些试剂盒能让您简捷地获得高质量恒定的数据。结合安捷伦出色的技术服务，这些试剂盒将极大地提高您的 XF 实验效率和体验。

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。

超纯水机在后期使用中会因各种因素导致设备性能下降，所以为了确保延长设备的使用寿命，日常使用时就应该注意设备的维护和保养，那么导致超纯水机性能下降的因素有哪些呢?