Wandaitang, which is one of classical traditional Chinese medicine(TCM) prescriptions, is derived from Collected Exegesis of Recipes of Fu Qingzhu' s Obstetrics and Gynecology. It is commonly used in modern clinical practice, and included in the Catalogue of Ancient Classical Prescriptions (The First Batch). Collected Exegesis of Recipes of Fu Qingzhu' s Obstetrics and Gynecology and Chen Shi-duo' s Bianzhenglu have a complicated relationship. Both of them have another biography, named Nvke Xianfang and Bianzheng Qiwen. The composition of Wandaitang in the four books is slightly different, while the prescription's explanations and other records are almost the same. The research and development of Wandaitang should be based on the records of Collected Exegesis of Recipes of Fu Qingzhu's Obstetrics and Gynecology. Compared with other classical literatures, Collected Exegesis of Recipes of Fu Qingzhu's Obstetrics and Gynecology was published in a late period and less reproduced in other ancient books. To study the function of Wandaitang, we need to analyze the records in the original book. In addition, we need to make a multi-angle analysis by reference to the theory of TCM, the composition of drugs, the significance of compatibility, as well as the understanding of modern famous doctors, clinical reports and experimental studies in all aspects. The study found that the functions of Wandaitang were relatively concentrated, but with wide major functions involving internal medicine, surgery, gynecological, pediatric, andrological and other departments. According to the study, the authors believe that the functions of the classical TCM prescription of Wandaitang are invigorating spleen to eliminate dampness, dispersing the liver and rectifying Qi, and invigorating Yang. It can be used to treat leucorrhea, diarrhea, edema and stranguria with the syndromes of pale, languid, little food, loose stool and depression. Wandaitang can also be used to treat vaginitis, cervicitis, pelvic inflammatory disease, irritable bowel syndrome, chronic colitis, chronic nephritis, nephrotic syndrome and chronic prostatitis.

Palladium hydrogel capped by β-cyclodextrins (Pdβ-CD) was prepared by a facile method with β-cyclodextrins and palladium(II) chloride,which were then modified onto the surface of gold electrode. The morphology and structure of the as-prepared palladium hydrogel were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), while the electrochemistry behaviors of gold electrode modified by Pdβ-CDwere investigated by cyclic voltammetry (CV) and differential pulse voltammetry(DPV). The results indicated the sensor had high electrochemistry response to hydrazine hydrate in the presence of K+,Na+,Mg2+,NH+4,Ni+2,Mn2+,Cl-,NO-3,SO2-4,PO3-4,HCOO-, C6H5O-3. Under the optimized conditions, the oxidized peak current showed linear relationship with the concentration of hydrazine hydrate in the concentration range of 25-950 μmol/L and the limit of detection (LOD) of 1.6 μmol/L(S/N=3).Owing to the facile preparation,high sensitivity and selectivity,the sensor has potential applications in determination of hydrazine hydrate in real water samples

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