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101.
A granuloma is a collection of macrophages that contains bacteria or other foreign substances that the body?s immune response is unable to eliminate. In this paper we present a simple mathematical model of radially symmetric granuloma dynamics. The model consists of a coupled system of two semi-linear parabolic equations for the macrophage density, and the bacterial density. The boundary of the granuloma is free. This simple framework makes it possible to conduct a mathematical analysis of the system dynamics. In particular, we show that the model system has a unique solution, and that, depending on the biological parameters; the bacterial load either disappears over time or persists. We use numerical methods to establish the existence of stationary solutions and examine how a stationary solution changes with the reproductive rate of the bacteria. These simulations show that the structure of the granuloma breaks down as the reproductive rate of the bacteria increases. 相似文献
102.
Duh Yih-Shing Lin Ying-Cih Ho Ta-Cheng Kao Chen-Shan 《Journal of Thermal Analysis and Calorimetry》2022,147(21):12005-12018
Journal of Thermal Analysis and Calorimetry - Thermal runaway phenomena of the Panasonic 21,700 LiNi0.8Co0.15Al0.05O2 lithium-ion batteries with 100, 50 and 25% capacity were studied under thermal... 相似文献
103.
Chen C. Y. Kao C. L. Kuo C. E. Li H. T. Wu M. D. Cheng M. J. 《Chemistry of Natural Compounds》2022,58(4):644-646
Chemistry of Natural Compounds - A new 24-crown 8-ether, namely mahoniafortunin (1) was isolated from the leaves of Mahonia fortunei (Lindl.) Fedde (Berberidaceae). The structure of the new crown... 相似文献
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Sun Chi-Kuang Huang Yong-Liang Liang Jian-Chin Wang Jiun-Cheng Gan Kian-Giap Kao Fu-Jen Keller Stacia Mack Michael P. Mishra Umesh Denbaars Steven P. 《Optical and Quantum Electronics》2000,32(4-5):619-640
We have studied third order nonlinearities, including two-photon absorption coefficient and nonlinear refractive index n
2, of GaN in below bandgap ultraviolet (UV) wavelength regime by using UV femtosecond pulses. Two-photon absorption was investigated by demonstrating femtosecond UV pulsewidth autocorrelation in a GaN thin film while femtosecond Z-scan measurements revealed information for both n
2 and . The distribution of n
2 versus wavelength was found to be consistent with a model described by the quadratic Stark effect, which is the dominant factor contributed to the nonlinear refractive index near the bandgap. Large on the order of 10 cm/GW and large negative n
2 with a magnitude on the order of several 10–12 cm2/W were obtained. The at near mid-gap infrared (IR) wavelength was also found to be on the order of several cm/GW by using two-photon-type autocorrelations in a GaN thin film. Taking advantage of the large two-photon absorption at mid-gap wavelengths, we have demonstrated excellent image quality on two-photon confocal microscopy, including two-photon-scanning-photoluminescence imaging and two-photon optical-beam-induced current microscopy, on a GaN Hall measurement sample and an InGaN green light emitting diode. 相似文献
106.
Synthesis of Cu nanoparticles in mesoporous silica SBA-15 functionalized with carboxylic acid groups
In this study, the mesoporous silica SBA-15 materials containing carboxylic acid groups were used as an effective support to synthesize Cu nanoparticles. Various Cu loading levels from 4% to 13% on SBA-15 catalysts produced an average particle size of 2.8 to 3.1 nm, regardless of the Cu content. 相似文献
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110.
Shan-Yen Choir Paw-Hwa Yang Chia-Lin J. Wang Hsiao-Hwa Lu Yin Chen Jen-Mann Kao 《中国化学会会志》1999,46(1):53-62
A series of biphenylyltetrazole substituted triazinones and structure-related pyrimidinones are systhesized, and their binding affinities for angiotensin II receptor are reported. 相似文献