ABSTRACT
Objective @#To estimate the risk threshold of route index（RI）and mosq-ovitrap index（MOI）based on Breteau index（BI）,as supplements for dengue fever risk monitoring in specific habitats. @*Methods @#Two towns and two streets were selected from nine towns（streets）in Jiashan County,and then one village（community）was selected from each of them as a Aedes albopictus monitoring site. The BI,RI and MOI were employed at the same time and area from April to October in the year 2018. Linear regression models were built with RI,MOI and BI to calculate the dengue risk threshold of RI and MOI according to BI. @*Results @#The linear regression model of BI（X）and RI（Y）was Y=0.145+0.662X（P<0.05）,of BI（X）and MOI（Y）was Y=3.423+0.524X（P<0.05）. If BI=5（having risk of transmission of dengue fever）,then RI=3.455（95%CI：1.717-5.198）,MOI=6.043（95%CI：-0.327-12.417）. If BI=10（having risk of outbreak）,then RI=6.765（95%CI：5.018-8.518）,MOI=8.663（95%CI：2.260-15.071）. If BI=20（having risk of epidemic）,then RI=13.385（95%CI：11.326-15.453）,MOI=13.903（95%CI：6.352-21.461）.@*Conclusion @#The dengue fever risk threshold of RI estimated by BI had a narrow 95%CI and could be applied for dengue fever risk assessment,while the risk threshold of MOI had a wide 95%CI and the application value needed further study.
ABSTRACT
Material properties and hygroscopicity were determined. Principal component analysis and partial least squares regression were applied to evaluate relationships between material properties and hygroscopicity of Chinese medicine raw materials. The results showed that hygroscopicity was correlated with water content, particle size distribution, water soluble characteristic and cohesion. Balanced moisture content was positively correlated with water content, particle size distribution, water soluble characteristic and cohesion. Moisture absorption velocity was negatively correlated with particle size distribution, protruding degree and positively correlated with water soluble characteristic and cohesion. Moisture absorption acceleration was positively correlated with water content, particle size distribution and negatively correlated with water soluble characteristic and cohesion. Hygroscopicity of Chinese medicine raw materials is interpreted in terms of physics.
Subject(s)
Absorption , Drugs, Chinese Herbal , Chemistry , Least-Squares Analysis , Multivariate Analysis , Particle Size , Plants, Medicinal , Chemistry , Principal Component Analysis , Solubility , Water , WettabilityABSTRACT
<p><b>OBJECTIVE</b>To describe the difference between native and nonative herbs by determining contents of seven kinds of flavone for twenty-five samples from seventeen areas.</p><p><b>METHODS</b>HPLC. Fluid phase: MEOH-H2O-CH3COOH(ICE) (41:59:0.2) and (50:50:0.2). Detection wavelength: 275.</p><p><b>RESULTS</b>The contents of baicalin are 6%-9%, wogenin are 2%-8%, baicalein are 0.1%-1.6%, neobaicalein are 0.01%-0.2%, wogonin are 0.01%-0.3%, visidulin and oroxylin are trace amounts or undetected.</p><p><b>CONCLUSION</b>The native and nonative herbs have no distinct differce in absolute component ratio. The ratio of baicalin and wogenin is under three. The ratio of baicalin and baicalein, baicalin and wogonin is between twenty and fifty.</p>
Subject(s)
Chromatography, High Pressure Liquid , Flavanones , Flavonoids , Plant Roots , Chemistry , Plants, Medicinal , Chemistry , Quality Control , Scutellaria baicalensis , ChemistryABSTRACT
HK-2 cells were cultured with various concentrations of glucose and insulin for 12,24,48,72 h.Transforming growth factor-?_1(TGF-?_1) protein in supematant was measured by ELISA,while TGF-?_1 mRNA expression was assessed by RT-PCR.Data showed that high concentration of glucose and insulin up-regulated the expression of TGF-?_1 in HK-2 cells through different pathways.