Preparation of Polyacrylamide Resin and Its Adsorption Properties on 2,4-Dichlorophenoxyacetic Acid / 分析化学

Polyacrylamide resin was synthesized via surface-initiated atom transfer radical polymerization ( SI-ATRP) method. Acrylic amide ( AM) was grafted onto the surface of the chloromethyl polystyrene resin via SI-ATRP in the CuBr/2, 2'-bipyridine ( Bpy) system as catalyst at room temperature. The compositions of polyacrylamide resin were determined by means of elementary analysis, FT-IR analysis and scanning electron microscopy ( SEM) . The adsorption properties, the parameters of kinetics and the thermodynamics of the resin were evaluated in details, respectively. As the results, adsorption capacity of 2,4-dichlorophenoxyacetic acid (2,4-D) increased with the initial concentrations of solution increasing at room temperature, and its highest adsorption capacity was 111. 0 mg/g with solution concentration of 8 mmol/L. Adsorption isotherm at room temperature was determined and modeled with Langmuir and Freundlich equations. The thermodynamic equilibrium functions were calculated to be ΔG0, hence, the adsorption was spontaneous, endothermic and entropy increasing. The kinetics fitted the pseudo-second-order well. The polyacrylamide-chloromethyl polystyrene (PAM-CMCPS) resin was used for the adsorption of 2,4-D in orange sample, and good results were obtained.

Clinical observation on hormone replacement in treatment of perimenopausal syndrome / 中国医师进修杂志

ObjectiveTo study the changes of related hormone levels using hormone replacement therapy in patients with perimenopausal syndrome,and its clinical significance.Methods Eighty-five patients with perimenopausal syndrome received continuous sequential estrogen and progesterone treatment.Daily oral conjugated estrogen 0.625 mg,28 days as one cycle.In each cycle the 19-28th d combined with medroxyprogesterone acetate 4 mg,once a day,a total of 3 cycles.Observed the changes of hormone levels before and after treatment.ResultsThe levels of estradiol and progesterone were obviously increased after treatment compared with those before treatment [ (83.6 ± 1.9) ng/L vs.(10.0 ± 1.1 ) rng/L,(0.32 ± 0.10)μ g/L vs.(0.22 ± 0.20) μ g/L,P ＜ 0.05 ],and follicles stimulating hormone,luteinizing hormone,total cholesterol and triglyceride were obviously decreased [ (40.8 ± 11.0) U/L vs. (57.1 ± 10.8) U/L, (24.9 ±13.6) U/L vs.(46.2 ± 13.8) U/L,(4.6 ±0.9) mmol/L vs.(6.1 ± 1.0) mmol/L,(1.1 ±0.2) mmol/L vs.( 1.6 ± 0.1 ) mmol/L,P ＜ 0.05 ].Body mass index was no obviously different[ (23.9 ± 1.9) kg/m2 vs.(22.5 ± 2.2)kg/m2,P ＞ 0.05 ].ConclusionApplication of hormone replacement in treatment of perimenopausal syndrome is safe.

Development of self- starting devices and its clinical application in patients after major abdominal surgery / 中国实用护理杂志

Objective To explore the effect of clinical application of self-starting devices in patients after major abdominal surgery. Methods From January 2007 to June 2009, 90 patients with major abdominal surgery were randomly divided into the observation group and the control group with 45 patients in each. The observation group using self-starting devices 6 hours after surgery, the control group used the traditional approach to sit and lie. The effect of the two groups was compared. Results Significant difference existed in recovery of bowel movement, wound healing and incidence of pressure sore between the two groups. Conclusions Application of self- starting devices in patients after major abdominal surgery can promote recovery of bowel movement and wound healing and prevent incidence of pressure sore, so that patients can recover early.

Manufacture of double-deck pillow and its application during thyroma operation / 中国实用护理杂志

Objective To approach the preoperative exercise of body position and the comfortable post operative body position of thyroma patients,to elevate the degree of comfort and satisfaction of patients,reduce the complication and promote the rehabilitation of patients.Methods 60 thyroma patients(all underwent operation and with drainage tube)in general surgery department of our hospital from January 2004 to February 2006 were randomly divided into the experimental group and the control group.Before the operation the double deck pillows were used in the experimental group and the ordinary pillows were used in the control group.The therapeutic result was observed in both groups.Results The degree of comfort,the first-class healing rate of incision and the postoperative complications rate were significantly different between the two groups(P＜0.05).Condusiom The application of the double-deck pillow in thyroma patients could augment the degree of comfort of the preoperative exercise and postoperative body position,and could degrade the postoperative complications of thyroma patients and shorten the length of hospital stay.

Study on heparin concentration of sealing fluid for diabetic patients with trocar retain / 中国实用护理杂志

Objective To compare effect on sealing up tubes by using heparin of 3 different con-centrations and make choice of the suitable concentration.Methods The diabetic patients who needed trocar retain were averagely divided into 3 groups,namely group A,B and C with 10 cases in each group.Heparin concentration was 50 U/ml in group A,75 U/ml in group B,100 U/ml in group C respectively.The recanalization rote was compared between the three groups.Results Statistical significance was observed between group A and group B.The obstruction rate of group A was significantly higher than that of group B(P＜0.05).But there was no significant difference in obstruction rate between group B and group C.Conclusion Heparin concentration of group B was suitable for sealing tubes for diabetic patients.