严世芸辨治心系疾病临床经验

介绍严世芸教授治疗心系疾病的理论体系及治法方药。临床辨治心系疾病,强调权衡邪正、重视气血、兼顾五脏、调和阴阳;情志为先、汤液治疾、丸散策应、膏方固本为其治法特色;善用合方、对药、组药及虫类药。并举验案1则。

苏轼养生思想初探——以《苏沈良方》为中心

由无名氏将苏轼和沈括所收集的验方合编的《苏沈良方》,收录了苏轼主要的涉医文献,能集中和深入地体现他的养生思想。苏轼养生的动因强烈,基于客观,勇于实践;善于进行精神调摄,药食调养,丹道、辟谷养生;理论上以儒家思想为当时意识形态的内在要求,同时又将道、佛思想中的积极因素融入正向的社会伦理思想,兼有中国古代养生的神秘色彩。苏轼养生思想特色的形成,既与宋代士人医药养生文化的繁荣发展有关,也与苏轼个人知识结构、仕途经历、养生实践有着密切的联系。

Highly Sensitive Temperature Sensor Based on Coupled-Beam AIN-on-Si MEMS Resonators Operating in Out-of-Plane Flexural Vibration Modes

This paper reports a type of highly sensitive temperature sensor utilizing AlN-on-Si resonators with coupled-beam structures of double-and triple-ended-tuning-fork(D/TETF).For both resonators,the out-of-plane flexural mode is adopted as it favors the effect of thermal mismatch between the composite layers inherent to the AlN-on-Si structure and thus helps attain a large temperature coeficient of resonant frequency(TCF).The analytical model to calculate TCF values of D/TETF AIN-on-Si resonators is provided,which agrees well with the finite-element simulation and experimental results.The resonant temperature sensor is built by closing the loop of the AlN-on-Si resonator,a transimpedance amplifer,a low-pass flter,and a phase shifter to form an oscillator,the output frequency of which shifts proportionally to the ambient temperature.The measured sensitivities of the temperature sensors using D/TETF resonators are better than-1000 ppm/℃in the temperature range of 25℃~60℃,showing great potential to fulfll the on-chip temperature compensation scheme for cofabricated sensors.

Single-structure 3-axis Lorentz force magnetometer based on an AlN-on-Si MEMS resonator

This work presents a single-structure 3-axis Lorentz force magnetometer(LFM)based on an AlN-on-Si MEMS resonator.The operation of the proposed LFM relies on the flexible manipulation of applied excitation currents in different directions and frequencies,enabling the effective actuation of two mechanical vibration modes in a single device for magnetic field measurements in three axes.Specifically,the excited out-of-plane drum-like mode at 277 kHz is used for measuring the x-and y-axis magnetic fields,while the in-plane square-extensional mode at 5.4 MHz is used for measuring the z-axis magnetic field.The different configurations of applied excitation currents ensure good crossinterference immunity among the three axes.Compared to conventional capacitive LFMs,the proposed piezoelectric LFM utilizes strong electromechanical coupling from the AlN layer,which allows it to operate at ambient pressure with a high sensitivity.To understand and analyze the measured results,a novel equivalent circuit model for the proposed LFM is also reported in this work,which serves to separate the effect of Lorentz force from the unwanted capacitive feedthrough.The demonstrated 3-axis LFM exhibits measured magnetic responsivities of 1.74 ppm/mT,1.83 ppm/mT and 6.75 ppm/mT in the x-,y-and z-axes,respectively,which are comparable to their capacitive counterparts.

Environmental risks for application of iron and steel slags in soils in China: A review

Iron and steel slags are smelting wastes, mainly including blast furnace slag(BFS) and steel slag(SS) produced in the iron and steel industry. Utilization of iron and steel slags as resources for solving the problem of slag disposals has attracted much attention with increasing iron and steel smelting slags in China. Because the iron and steel slags contain calcium(Ca), magnesium(Mg), phosphorus(P), and silicon(Si), some have tried to use them as Si-and P-fertilizers, for producing Ca-Mg-P fertilizers, or as soil amendments in agriculture. However, in the iron metallurgical process, several pollutants in iron ores can inevitably transfer into iron and steel slags, resulting in the enrichment of pollutants both in BFS(mainly nickel(Ni), copper(Cu), mercury, zinc(Zn),cadmium(Cd), chromium(Cr), arsenic, lead, selenium, fluorine(F), and chlorine(Cl)) and in SS(mainly Ni, Cr, Cd, Zn, Cu, F, and Cl), in which some of pollutants(especially Cr, Ni, F, and Cl) exceed the limits of environmental quality standards for soils and groundwater. The elements of manganese, barium,and vanadium in iron and steel slags are higher than the background values of soil environment. In order to ensure soil health, food safety, and environmental quality, it is suggested that those industrial solid wastes, such as iron and steel slags, without any pretreatment for reducing harmful pollutants and with environmental safety risk, should not be allowed to use for soil remediation or conditioning directly in farmlands by solid waste disposal methods, to prevent pollutants from entering food chain and harming human health.

Wetting behaviors and interfacial characteristics of molten Al_(x)CoCrCuFeNi high-entropy alloys on a WC substrate

The wettability of molten Al_(x)CoCrCuFeNi(x is from 0 to 1.5,mol.%)high-entropy alloys(HEA)on a WC substrate was measured using a modified sessile drop method at 1823 K in an argon atmosphere.The wetting behaviors and interfacial characteristics between HEAs and WC were studied.Good wettability with final equilibrium contact angles of 0.5°-4.6°is obtained,and addition of Al deteriorates the wettability of the HEAs.The wetting of Al_(x)CoCrCuFeNi/WC system can be roughly divided into an initially sharp spreading stage and a subsequent steady-state phase.In the first stage,the adsorption of Cr atoms at the solid-liquid interface primarily contributes to the wetting,and the contact angle drastically reduces.However,both the wetting behavior and interfacial microstructure are determined by the Al content of the HEA in the next stage.For x≤0.5,the wetting is mainly driven by the dissolution of WC,although a few reaction products of(W,Cr)_(2)C are observed.Moreover,an obvious dissolution pit appears at the surface of the substrate.When the Al content of x≥1,the interfacial reaction is dominant in competition with the dissolution of WC,and massive reaction products precipitate at the HEA/WC interface,which leads to the formation of a continuous reaction layer.