Microwave Extraction of V A,V D,V E from Pre mixed Feed and the Comparison with Other Extraction Methods

以甲醇为溶剂，用微波成功地萃取了饲料添加剂中的维生素A、d、E。与常规的搅拌萃取、超声波萃取方式比较，微波萃取具有速度快、萃取效率高等优点。V A, V D, V E were successfully extracted from pre mixed feed by microwave technique using methanol as solvent.Compared with conventional agitation extraction and ultrasound extration, microwave extraction has the advantages of being fast and efficient.福建省自然科学基

Determination of Vitamin E and Vitamin B 6 in Feed Additives with High Performance Liquid Chromatography

采用反相高效液相色谱测定饲料添加剂中维生素E和维生素b6.采用甲醇萃取维生素E，回收率达85%.方法重现性好，步骤简单，分析速度快.A method of determination of Vitamin E and Vitamin B 6 in feed additives with reversed phase HPLC has been developed.Methanol is used to extract Vitamin E directly with the recovery of 85%.The method is simple, fast, and reproducible

肌醇的高效液相色谱分析

饲料添加剂中肌醇的经典分析方法是重量法,该法在样品中加入硫酸-乙酸酐混合液,加热使肌醇生成六乙酰肌醇,用三氯甲烷提取六乙酰肌醇,将三氯甲烷蒸发至干,残留的六乙酰肌醇经干燥称量,再换算成样品中肌醇的含量

A Study on the New Analytical Method of the Invsitol of Feeder Addictives

用红外光谱对肌醇样品进行定性分析,用高效液相色谱法对肌醇样品的乙酰化产物进行定量测定。所建立的方法避免了环境污染,且简便、准确、重现。A new method has been developed to analyze inositol in feed additive samples. FT - IR technique was used for qualitative analysis, and HPLC technique for quantitative analysis . Compared to the conventional method of gravimetric analysis, the proposed method avoids the pollution to the environment, being reliable, accurate and reproducible

Electrocatalytic Oxidation of Glucose on Nano Pt/C Electrode

用交替微波法制备纳米PVC催化剂,研究和比较葡萄糖在光亮Pt和纳米Pt/C电极上的氧化行为.实验表明,Pt纳米化后,电极反应过电位降低,动力学速率相应提高,从而使电化学性能得到改善.其催化活性和抗毒化能力大于光亮Pt的可能原因即在Pt纳米化后,大幅度提高了表面积,结果不仅增加其电极活性,而且含氧物也容易接近受毒化的反应点,从而较易氧化毒化物而使电极再次活化.Nano Pt/C electrocatalysts were prepared by intermittent microwave heating method.The electrooxidation of glucose on smooth Pt and～Pt/C electrodes has been studied and compared.The results showed that the electrochemical properties on nano Pt/C were improved due to the reduction of the overpotential and the increase in the kinetic rate.The surface area would be significantly increased when the particle size of the catalyst was reduced to nano-scale,resulting in the increase in the activity.The enhancement in the resistance to poisoning could be explained that the oxygen-containing species are easier to react with poisoning species on nano Pt/C and re-active the electrode.作者联系地址：漳州职业技术学院食品与食品生物工程系,中山大学物理科学与工程技术学院,中山大学物理科学与工程技术学院 福建漳州363000,广东广州510275,现在通讯地址:华南理工大学理学院,广东广州,广东广州510275Author's Address: l,WEI Xiao-lan~**2,SHEN Pei Kang~*21.Department of Foodand Bioengineering,Institute of Technology of Zhangzhou,Zhangzhou 363000,Fujian,China,2.School of Physics and Engineering,Sun Yat-Sen University,Guangzhou 510275,Guangdong,Chin

Effect of PRECEDE-based nursing combined with individualized exercise guidance on pulmonary function and exercise capacity in patients with pulmonary tuberculosis (PRECEDE护理模式配合个体化运动指导对肺结核患者肺功能与运动能力的影响)

Objective To investigate the effect of PRECEDE-based nursing combined with individualized exercise guidance on pulmonary function and exercise capacity in patients with pulmonary tuberculosis. Methods Totally 90 patients with pulmonary tuberculosis were randomly divided into the control group and observation group, with 45 cases in each group. The control group received individualized exercise guidance, and the observation group received PRECEDE-based nursing ombined with individualized exercise guidance. The pulmonary function, exercise capacity, quality of life and satisfaction with nursing service were evaluated and compared between two groups. Results The forced expiratory volume in 1 second(FEV1), forced vital capacity (FVC) and FEV1/FVC% were increased in both two groups after intervention, and FEV1, FVC and FEV1/FVC% in the observation group were higher than those in the control group (P＜0. 01). The outcomes of 6-minute walking test (6MWT), 30-seconds sit-to-stand test (STS-30) and 30-second arm curl test(30-ACT) were increased in both two groups after intervention, and outcomes of 6MWT, STS-30 and 30-ACT in the observation group were higher than those in the control group (P＜0. 01). The St George's Respiratory Questionnaire (SGRQ) score were decreased in both two groups after intervention, and SGRQ score in the observation group were lower than that in the control group (P＜0. 01). The satisfaction degree in the observation group was higher than that in the control group(P＜0. 05). Conclusion The PRECEDE-based nursing interventions combined with individualized exercise guidance are effective to improve the pulmonary function, exercise capacity, quality of life and satisfaction of patients with pulmonary tuberculosis. (目的 探讨PRECEDE护理模式配合个体化运动指导对肺结核患者肺功能与运动能力的影响。方法 选择医院2021年10月—2023年4月收治的肺结核患者90例作为研究对象, 按随机数字表法分为对照组和观察组, 各45例。对照组给予个体化运动指导, 观察组给予PRECEDE护理模式配合个体化运动指导。比较两组的护理前后肺功能、运动能力和生活质量相关指标和量表评分变化, 评价患者护理满意度。结果 干预后两组1s用力呼气容积(FEV1), 用力肺活量(FVC)、FEV1/FVC%值均高于干预前, 且观察组高于对照组, 差异有统计学意义(P＜0. 01)。干预后两组6分钟步行试验(6MWT)、30 s坐立试验(30 s-STS)、30 s前臂屈曲试验(30-ACT)值均高于干预前, 且观察组高于对照组, 差异有统计学意义(P＜0. 01)。与干预前相比, 治疗后两组圣乔治呼吸问卷(SGRQ)评分降低, 且观察组低于对照组, 差异有统计学意义(P＜0. 01)。观察组护理满意度高于对照组(P＜0. 05)。结论 与单一个体化运动指导相比, PRECEDE护理模式配合个体化运动指导在提升肺结核患者肺功能、运动能力方面效果更佳, 能够进一步提升患者护理满意度, 改善患者生活质量。