动态微光条件下静脉输液技术培训的效果分析

目的:分析动态微光条件下静脉输液技术培训的效果。方法:采用便利抽样法选取2020年1月—2023年1月于解放军63600部队医院接受输液培训的护理人员110例为研究对象,随机分为对照组和研究组,各55例。对照组采用微光条件常规静脉输液培训方案,研究组采用动态微光条件下的静脉输液培训方案。比较两组一次穿刺成功率和穿刺满意度。结果:培训前,两组一次穿刺成功率比较,差异无统计学意义(P>0.05);培训后,两组一次穿刺成功率高于培训前,且研究组高于对照组,差异有统计学意义(P<0.05)。研究组静脉穿刺满意度评分高于对照组,差异有统计学意义(P<0.001)。结论:动态微光条件下静脉输液技术培训效果显著,可提升不良环境下静脉输液成功率,提高护理人员穿刺满意度。

Synthesis of Nanometer Cobalt Blue Pigment by Microemulsion Method and Control of Diameter of Particle

The nanometer cobalt blue pigments were prepared by microemulsion method. Using dynamic light scattering(DLS) test method, the influences of water content on the size of liquid drop of microemulsion and the liquid drop of microemulsion on the final diameter of nanometer particle were studied in the course of preparation. Accordingly, the method to control the diameter of nanometer particle by changing water content was established. The nanometer cobalt blue particles were confirmed by XRD and TEM. Color parameters of pigments were determined. The quantum size effect of the pigments was discussed.

Synthesis of Silica Particles with Precisely Tailored Diameter

A modified seeded growth process of silica particles with a continuous addition of tetraethyl orthosilicate （TEOS） was presented to control the diameter of silica particles. The diameter of particles was monitored by dynamic light scattering to control the addition of TEOS. The increase in the diameter of the silica particles with time and the addition of TEOS was investigated. The diameter of silica seeds increased from 193 nm to 446 nm in 4 h. The final diameter of silica particles was tailored within the range of ±5 nm to the target diameter. Silica particles with diameter of 446 nm were synthesized and assembled into photonic crystals with a pseudo band gap centered at just 1000 nm. The feasibility and practicability of this modified seeded growth process was verified.

Fabric and Programming of Photoautotrophic Micro-propagation System Controlled by Dynamic Parameters

According to theory of photoautotrophic micro-propagation, and principle and technology of environmental engineering, an automatic control and regulation under photoautotrophic micro-propagation by plants was designed, which can be used for planting condition optimization of photoautotrophic micro-propagation and qualified industrialized production of seedlings.

Reversible photoswitching self-assembly of azobenzene-functionalized hyperbranched polyglycerol induced by host-guest chemistry

Reversible assembly and disassembly of rodlike large complex micelles have been achieved by applying photoswitching of supramolecular inclusion and exclusion of azobenzene-functionalized hyperbranched polyglycerol and acyclodextrin as driv ing force, promising a versatile system for selfassembly switched by light. Hydrogennuclear magnetic resonance （H NMR） and Fourier transform infrared （FTIR） spectroscopy were applied to characterize the azobenzenefunctionalized hyperbranched polyglycerol. Atomic force microscopy （AFM）, transmission electron microscopy （TEM） and dynamic laser light scattering （DLS） were employed to investigate and track the morphology of the rodlike large complex micelles before and after irradiation of UV light.

A microwave photonic link with high spurious-free dynamic range based on a parallel structure

A microwave photonic link （MPL） with high spurious-free dynamic range （SFDR） is proposed and analyzed. The optical carrier is divided equally into two paths. The path I is modulated by radio frequency （RF） signals in a Mach-Zehnder modulator （MZM）, and the phase of path 2 is controlled before the combination with path 1. By properly adjusting the phase difference of the two paths with the optical phase shifter, the third-order intermodulation distortion （IMD3） can be significantly suppressed. A proof-of-concept simulation is carried out. The results show that a reduction of 40 dB in the IMD3 and an improvement of 21.1 dB in the SFDR are achieved as compared with the conventional MZM-based MPL. The proposed MPL shows the advantages of simple structure, low cost and high efficiency.

Supramolecular vesicles of cationic gemini surfactants modulated by p-sulfonatocalix[4]arene

Supramolecular binary vesicles were constructed by host-guest complex formation between p-sulfonatocalix[4]arene and three cationic gemini surfactants, which were identified by UV-vis, dynamic laser scattering, transmission electron microscopy, scanning electron microscopy, atomic force microscopy, and surface tension experiments. The critical aggregation concentration of gemini surfactants decreased pronouncedly by a factor of ca. 1000 owing to the complexation of p-sulfonato-calix[4]arene.

p-Sulfonatocalix[4]arene-induced amphiphilic aggregation of fluorocarbon surfactant

Sulfonatocalix[4]arene lowers the critical aggregation concentration of fluorocarbon surfactant pronouncedly by a factor of ca.100 to form binary amphiphilic aggregates on the basis of host-guest complexation,which was identified by1H NMR spectroscopy,fluorescence spectroscopy,optical transmittance spectroscopy,dynamic laser scattering,high-resolution transmission electron microscopy,scanning electron microscopy,and surface tension experiments.Moreover,the resulting aggregates can respond to external stimuli,including temperature and inclusion of competitor guest.Therefore,the present system may have potential applications in drug delivery systems.