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258 results on '"Li, Bolong"'

73. Study on the Post-Irradiation Effects of Single-Use Protective Clothing for Medical Use

Author

WANG Jingjun, LI Bolong, SUN QiZhong, ZHANG Yue, LI Haopeng, LI Mengyuan, WANG Liancai, SHEN Yiling, and DAI Pei

Subjects
Nuclear and particle physics. Atomic energy. Radioactivity, filtering efficiency, radiation sterilization, QC770-798, mechanical properties, single-use protective clothing for medical use
Abstract

In this paper the single-use protective clothing for medical use was sterilized by γ-ray irradiation. Compared with the non-irradiated control, the apparent morphology of PP melt-blown fiber and amboss had no fracture. According to the national standard of GB/T 19082-2009, the mechanical properties, resistance to synthetic blood penetration, resistance to water penetration and filtering efficiency were measured. The results showed that the post-irradiation effects did not decrease the resistance to synthetic blood penetration or water penetration. Moreover, the filtering efficiency remained higher than 99.8%. On the other hand, the mechanical properties were reduced significantly due to the degradation of poly chain of PP induced by γ-ray irradiation. It has been assured that the important properties of single-use protective clothing for medical use are still above the quality level after γ-ray irradiation sterilization process. which can supply reference for the produce single-use protection of clothing of medical purpose at high quality.

Published
2021

88. Effect of Gamma Irradiation on the Mechanical Properties and Thermal Properties of Poly(3-Hydroxybutyrate-Co-3-hydroxyhexanoate)(PHBHHx) Based Films

Author

Liu Yang, Zhai Yu, Cao Wei, Li Bolong, Wang Liancai, and Zeng Xinmiao

Subjects
Engineering (General). Civil engineering (General), TA1-2040
Abstract

Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) is a naturally sourced polymer with good biocompatibility and potential applications in biomedical field after sterilization. Radiation sterilization technology has been extensively applied on medical products. However, for polymer-based biomedical materials, gamma irradiation can cause random chain scission on the polymer backbone. In this paper, we studied the effect of gamma irradiation on the mechanical and thermal properties of PHBHHx. The tensile strength and fracture strain of PHBHHx decreased after irradiation, while the brittleness increased after irradiation. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) results showed that the melting temperatures of irradiated PHBHHx are lower than the non-irradiated films, but the irradiated specimen shows a higher decomposition temperature than non-irradiated PHBHHx.

Published
2016
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95. Application of spectral computed tomography in diagnosis of liver and gallbladder diseases

Author

LI Bolong, PENG Xinyu, and QIAO Fei

Subjects
liver neoplasms, diagnosis, X-Ray computed, review, lcsh:Diseases of the digestive system. Gastroenterology, tomography, lcsh:RC799-869, liver & gallbladder diseases
Abstract

Spectral computed tomography (CT) is a perfect combination of diamond probe and strong computer processing technology and a technological revolution of traditional CT. This article reviews the application of spectral CT in the diagnosis of liver and gallbladder diseases. It summarizes the application value of monochromatic spectral CT imaging, spectral curve, material separation and quantitation, and effective atomic number in the diagnosis and differentiation of liver and gallbladder diseases and analyze the advantages of energy spectrum in identification of small lesions, low dose, and judgment of homology. It is pointed out that the application of spectral CT can be further explored in the aspects of early identification, differentiation, and prognosis of tumors.

Published
2017

96. Construction, Application and Verification of a Novel Formaldehyde Gas Sensor System Based on Ni-Doped SnO2 Nanoparticles.

Author

Yang, Zhi, Cao, Weiyang, Peng, Chaohua, Wang, Tao, Li, Bolong, Ma, Hongli, Su, Yanjie, Zhou, Zhihua, Yang, Jianhua, and Zeng, Min

Abstract

An efficient formaldehyde (HCHO) gas sensor system based on nickel-doped tin oxide (Ni-doped SnO2) nanoparticle sensor and back-end circuit has been developed. Ni-doped SnO2 nanoparticles are prepared by a simple one-step hydrothermal method. To complete the function of detecting HCHO gas in real time, a back-end circuit suitable for resistance measurement of nanoparticle sensors and an organic light emitting diode screen which can display the output of gas concentration data are integrated as a portable device. Compared with the traditional HCHO detection device, this designed system exhibits better stability, excellent selectivity, and high response. Its detection limit is as low as 90 ppb. The gas response to 50 ppm HCHO is 67.63. Further for the quantitative evaluation, we refer to and modify the existing HCHO diffusion model, then carry out a practical test on the HCHO diffusion at the same time. The comparison between the theoretical fitting curve and the actual test curve matched well enough to reflect the potential of this system for the practical HCHO evaluation. [ABSTRACT FROM AUTHOR]

Published
2021
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