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Yuqiang Ding Yaxian Zhu Lijuan Song Wei Liu Xiaozhen Liu Jichuan Huo Huaiguo Xue Rong Guo Qing Liao Zheming Ni Liya Zhou Jing Lu 《大学化学》1986,35(10):33-39
This "emerging engineering education (3E)" project "Upgrade and Practice of Chemistry-related Majors of Local and/or Specialized University Responding to the Industry Changes" was supported by the Ministry of Education. To aim at the issue of how to upgrade the chemistry-related majors of a local and/or specialized university responding to industry changes, an investigation on local regional economy and industry changes was carried out, the capability requirements of 3E for talents were analyzed, and the training objectives, graduation requirements as well as the new teaching models were also studied for the major to meet the future requirements. The practical experience for 3E construction of chemistry-related majors by selected universities was suggested. 相似文献
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Research on Chemical Intermediates - We report a novel method for fabrication of a nano-TiO2/polyimide (PI)/Ni foam photoanode. Characterization results indicated that porous nanostructured TiO2... 相似文献
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Two novel poly(amidoamine) (PAMAM) dendrimers, comprising rhodamine B unit in the core and 1-phenyl-3-methyl-5-pyrazolone unit at the periphery, have been synthesized and characterized. Both dendrimers displayed high selectivity and sensitivity towards Cr3+ ion. As considering the potential of being applied as fluorescent sensors for Cr3+ ion, we studied the complexes formed between the dendrimers and Cr3+ ion. Different PAMAM dendrimers had different recognition mechanism towards Cr3+ ion. For dendrimer G2, the recognition of Cr3+ was mainly due to the ring-opening of spirolactam. However, it significantly depended on the simultaneous effect of ring-opening of spirolactam and photoinduced electron transfer (PET) in the case of dendrimer G3. 相似文献
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Jichuan Qiu Da Huo Jiajia Xue Guanghui Zhu Hong Liu Younan Xia 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(31):10716-10721
As a class of biocompatible and biodegradable phase‐change materials, natural fatty acids have received considerable interest in recent years for temperature‐controlled release of drugs. However, the poor dispersibility and colloidal stability of their nanoparticles under physiological conditions place a major limitation on their applications in biomedicine. Herein, we report a facile method for encapsulating a mixture of two natural fatty acids (with a eutectic melting point at 39 °C) in a biocompatible, silica‐based nanocapsule to achieve both stable dispersion and controllable release of drugs. The nanocapsules have a well‐defined hole in the wall to ensure easy loading of fatty acids, together with multiple types of functional components such as therapeutics and near‐infrared dyes. The payloads can be released through the hole when the fatty acids are melted upon photothermal heating. The release profile can be controlled by varying the size of the hole and/or the duration of laser irradiation. 相似文献
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在对某研究区进行环境调查的基础之上,质予以评价,查明研究区内地下水环境质量现状。源合理利用和规划需要提供一定的依据。对区内地下水进行了取样分析,并对地下水水为该区域地下水资源利用、环境保护、土地资 相似文献
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A mixed method for measuring low-frequency acoustic properties of macromolecular materials is presented. The dynamic mechanical
parameters of materials are first measured by using Dynamic Mechanical Thermal Apparatus(DMTA) at low frequencies, usually
less than 100 Hz; then based on the Principles of Time-Temperature Superposition (TTS), these parameters are extended to the
frequency range that acousticians are concerned about, usually from hundreds to thousands of hertz; finally the extended dynamic
mechanical parameters are transformed into acoustic parameters with the help of acoustic measurement and inverse analysis.
To test the feasibility and accuracy, we measure a kind of rubber sample in DMTA and acquire the basic acoustic parameters
of the sample by using this method. While applying the basic parameters to calculating characteristics of the sample in acoustic
pipe, a reasonable agreement of sound absorption coefficients is obtained between the calculations and measurements in the
acoustic pipe. 相似文献