Professor Li has combined TCM and modern medicine in the treatment of skin diseases for more than 30 years and has accumulated rich experience.We summarize some of his clinical experience in treating psoriasis.
Professor Li Yuan-wen is a tutor of doctoral candidates of Beijing university of Chinese medicine. He has combined traditional Chinese and modern medicine in treating skin diseases for more than 30 years in clinical h...Professor Li Yuan-wen is a tutor of doctoral candidates of Beijing university of Chinese medicine. He has combined traditional Chinese and modern medicine in treating skin diseases for more than 30 years in clinical his clinical practice, scientific research and education. He has rich experience in treating all kinds of complex skin diseases and holds a unique opinion. We summarize some of his clinical experience in the treatment of eczema.展开更多
Hydraulic fracture(HF) propagation behavior is significant when building enhanced geothermal systems(EGS). HF geometry is closely related to the structural planes(SPs) in hot dry rock(HDR), such as natural fractures(N...Hydraulic fracture(HF) propagation behavior is significant when building enhanced geothermal systems(EGS). HF geometry is closely related to the structural planes(SPs) in hot dry rock(HDR), such as natural fractures(NFs), quartz veins(QVs) and lithologic interfaces(LIs). However, the HF behaviors in HDR have not been well understood, especially the influence of multiple SPs on the HF geometry. To clarify this mechanism, several groups of physical simulation experiments of hydraulic fracturing were conducted to investigate the intersection relationship between the HFs and the SPs. Results show that the HF geometry shows great differences when intersecting with different SPs. In summary, the HF geometry displays four basic patterns, namely, propagation along the SPs, branching, capture, penetration/non-dilation. The fluctuation degree of the pressure-time curve and the HF complexity show a positive correlation. The cementing strength of the SP and their different mechanical properties from rock matrix influence the HF behaviors significantly. Therefore, the HF shows diverse geometries when intersecting with the NFs and LIs, while propagating along the QV when intersecting with it. For the complex networks, it is favorable for the HF to penetrate through and dilate several SPs, rather than simply cross or propagate along the SP.展开更多
Li4Ti50i2 (LTO) has attracted considerable attention in lithium-ion battery (LIB) applications because of its favorable characteristics as an anode material. Despite its promise, the widespread use of LTO is still lim...Li4Ti50i2 (LTO) has attracted considerable attention in lithium-ion battery (LIB) applications because of its favorable characteristics as an anode material. Despite its promise, the widespread use of LTO is still limited primarily due to its intrinsically poor electric and ionic con ductivities and high surface reactivity. To address these issues, we desig ned polyg onal nano architectures composed of various Li-Ti oxide crystal polymorphs by a facile synthesis route. Depending on the pH condition, this synthesis approach yields multi-polymorphed Li-Ti oxides where the interior is dominantly composed of a Li-rich phase and the exterior is a Li-deficient (or Li-free) phase. As one of these variations, a polygonal LTO-rutile TiO2 structure is formed. The rutile TiO2 on the surface of this LTO composite significantly improves the kinetics of Li^+ insertion/extraction because the channel along the o-axis in TQ2 provides a Li^+ highway due to the significantly low energy barrier for Li^+ diffusion. Moreover, the presenee of rutile TiO2, which is less reactive with a carbonate-based electrolyte, ensures Iong-term stability by suppress)ng the undesirable interfacial reaction on LTO.展开更多
基金Open Subject from TCM clinical basic research on Psoriasis of the key laboratory of Beijing"10 kinds of diseases and 10 kinds of medicines"Subject from Beijing municipal commission of science and technology(number:Z131100002513013)Project from Human Resources Dept of Dongfang Hospital"Dongfang Famous Doctors"
文摘Professor Li has combined TCM and modern medicine in the treatment of skin diseases for more than 30 years and has accumulated rich experience.We summarize some of his clinical experience in treating psoriasis.
基金The Beijing municipal commission of science and technology"10 kinds of diseases and 10 kinds of medicines"subject(number:Z131100002513013)The Beijing municipal administration of traditional Chinese medicine"TCM external treatment"project(number:WZF2012-03)Project from Human Resources Dept of Dongfang Hospital"Dongfang Famous Doctors"
文摘Professor Li Yuan-wen is a tutor of doctoral candidates of Beijing university of Chinese medicine. He has combined traditional Chinese and modern medicine in treating skin diseases for more than 30 years in clinical his clinical practice, scientific research and education. He has rich experience in treating all kinds of complex skin diseases and holds a unique opinion. We summarize some of his clinical experience in the treatment of eczema.
基金support from the National Key Research and Development Project in China(Grant nos.2018YFB1501801,2020YFE020130005)the National Natural Science Foundation of China(Grant nos.42004115,42102353)the Open Research Fund Program of Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Central South University),Ministry of Education(Grant No.2021YSJS08)。
文摘Hydraulic fracture(HF) propagation behavior is significant when building enhanced geothermal systems(EGS). HF geometry is closely related to the structural planes(SPs) in hot dry rock(HDR), such as natural fractures(NFs), quartz veins(QVs) and lithologic interfaces(LIs). However, the HF behaviors in HDR have not been well understood, especially the influence of multiple SPs on the HF geometry. To clarify this mechanism, several groups of physical simulation experiments of hydraulic fracturing were conducted to investigate the intersection relationship between the HFs and the SPs. Results show that the HF geometry shows great differences when intersecting with different SPs. In summary, the HF geometry displays four basic patterns, namely, propagation along the SPs, branching, capture, penetration/non-dilation. The fluctuation degree of the pressure-time curve and the HF complexity show a positive correlation. The cementing strength of the SP and their different mechanical properties from rock matrix influence the HF behaviors significantly. Therefore, the HF shows diverse geometries when intersecting with the NFs and LIs, while propagating along the QV when intersecting with it. For the complex networks, it is favorable for the HF to penetrate through and dilate several SPs, rather than simply cross or propagate along the SP.
文摘Li4Ti50i2 (LTO) has attracted considerable attention in lithium-ion battery (LIB) applications because of its favorable characteristics as an anode material. Despite its promise, the widespread use of LTO is still limited primarily due to its intrinsically poor electric and ionic con ductivities and high surface reactivity. To address these issues, we desig ned polyg onal nano architectures composed of various Li-Ti oxide crystal polymorphs by a facile synthesis route. Depending on the pH condition, this synthesis approach yields multi-polymorphed Li-Ti oxides where the interior is dominantly composed of a Li-rich phase and the exterior is a Li-deficient (or Li-free) phase. As one of these variations, a polygonal LTO-rutile TiO2 structure is formed. The rutile TiO2 on the surface of this LTO composite significantly improves the kinetics of Li^+ insertion/extraction because the channel along the o-axis in TQ2 provides a Li^+ highway due to the significantly low energy barrier for Li^+ diffusion. Moreover, the presenee of rutile TiO2, which is less reactive with a carbonate-based electrolyte, ensures Iong-term stability by suppress)ng the undesirable interfacial reaction on LTO.
