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Microtubule WGM Sensor: Applications and Key Technologies
Yuan Guoqing,Li Hong,Luo Xinjian,Lu Lidan,Zhu Lianqing 한국바이오칩학회 2023 BioChip Journal Vol.17 No.2
Whispering gallery mode (WGM) microtubule resonators are widely used in highly sensitive sensing applications due to their ultra-high quality factor Q and extremely small mode size. Capillary microtubules, as sensing devices, have the advantages of low reagent sample consumption, a large specific surface area to enhance analytical sensitivity, and a fast mass transfer rate to shorten analysis time. In recent years, research scholars have conducted extensive and in-depth studies on the optimization of microtubule resonators. However, there are still several problems that limit the development of the technology applications and solutions that need to be explored. Therefore, this paper analyzes the current research status of resonant sensing technology in microtubule whispering gallery, analyzes key problems, and points out research priorities and methods in coupled resonance technology and microtubule structure optimization. Finally, suggestions for future development are made.
Parametric Estimation for Semi-varying Coefficient Model via Penalized Spline
Guo Haibing,MingtaoZhao,Li Lianqing 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.12
A semi-varying coefficient model, a type of semi-parametric model between the linear model and the varying coefficient model offers a good flexibility and has become an important tool for exploring the dynamic patterns in many areas of research, including economics, finance and biomedical research. This paper proposes a new estimation method for semi-varying coefficient models based on the roughness penalized spline approach. Asymptotic properties of their estimators are also obtained. The penalized spline estimation method is applied to an economic example using a semi-varying coefficient model.
PROBABILITY DISTRIBUTION OF CADMIUM PARTITIONING COEFFICIENTS OF CROPLAND SOILS
Chen, Weiping,Chang, Andrew C.,Wu, Laosheng,Li, Lianqing,Kwon, Soon-Ik,Page, Albert L. Williams & Wilkins Co 2007 Soil science Vol.172 No.2
The solution to solid partitioning coefficient (Kd) is an important parameter in assessing the environmental and health risks of potentially toxic metals in soils. Ideally, the metal in solution phase should be determined at the field moisture condition under which the exposures take place. In reality, it is often represented by the concentration in extracts of a given soil-to-water ratio. Using cadmium (Cd) as an example, we demonstrated the uncertainties in determining the soil solution concentrations in cropland soils where the metal contents are only slightly higher than the baselines. Results of extraction experiments showed the Cd concentration of soil solution under simulated field moisture conditions (i.e., water-to-soil ratio of 0.5) tends to be stochastic and follows a normal distribution. The distribution of Kd of two California cropland soils was quantitatively described by a normal probability distribution function. The normal distribution pattern wasfurther validated by data collected in the field. When Kd is characterized in the probabilistic terms, the risks of environmental andhealth harm of metals in the cropland soils may be more appropriately assessed.