电石渣湿法烟气脱硫与脱硫石膏性能

本文研究了电石渣和石灰石的消溶特性,不同工艺条件对电石渣脱硫性能影响,在优化条件下电石渣脱硫率可达到97%以上,且电石渣法脱硫石膏产品对比石灰石法具有更好的产品质量指标。电石渣烟气湿法脱硫试验表明电石渣有极高的脱硫效率和优良的产品指标,可以取代传统的石灰石,节省了原生石灰石矿产资源,并为电石渣烟气湿法脱硫的工程化应用提供参考。

嵌入型居家养老——中国特色养老模式研究

嵌入型居家养老是具有中国特色的养老模式。这种模式的特点是集家庭养老和机构养老的优点于一身,有利于更好地发挥中国社会主义制度优势和中华民族传统文化优势,是破解我国老龄化问题和养老难题有效途径。实施嵌入型居家养老,必须准确定位老年人及其家庭、政府、社区和专业养老机构的责任,各尽其责并形成合力,尤其要充分发挥社区在其中的平台作用。

仪器分析法测定复方化学消毒剂中邻苯二甲醛的含量

目的建立复方化学消毒剂中邻苯二甲醛(OPA)含量测定方法。方法采用液相色谱、气相色谱和毛细管电泳法等3种仪器分析技术,对复方消毒剂中OPA含量测定结果进行比较和方法验证。结果在3种仪器测定方法中,OPA的峰面积与一定范围内的质量浓度呈良好线性关系。3种仪器分析法检出限依次为液相色谱法0. 3μg/g、气相色谱法2μg/g、毛细管电泳法2. 5μg/g。3种仪器方法定量限依次为液相色谱法1μg/g、气相色谱法6μg/g、毛细管电泳法8μg/g。空白样品不同质量浓度加标回收率范围分别为液相色谱法88. 1%~99. 2%,气相色谱法90. 0%~104. 0%,毛细管电泳法85. 2%~100. 2%。相对标准偏差(RSD)均小于5%。结论本研究建立的3种仪器分析法均可满足复方化学消毒剂中OPA含量准确测定的检测需求,测定结果无显著性差异,实验室可根据仪器设备情况选用相应的分析方法。

二甲双胍联合炔雌醇环丙孕酮片治疗对多囊卵巢综合征患者临床疗效及糖脂代谢的影响

目的:研究二甲双胍联合炔雌醇环丙孕酮片治疗多囊卵巢综合征(polycystic ovarian syndrome,PCOS)患者的临床疗效及对患者糖脂代谢的影响。方法:选取2018年1月~2020年12月在我院接受治疗的60例PCOS患者作为研究对象,随机数表法均分为对照组和研究组:对照组患者接受炔雌醇环丙孕酮片治疗,而研究组患者接受二甲双胍联合炔雌醇环丙孕酮片治疗。比较两组患者治疗后排卵和妊娠情况,并比较治疗前后性激素水平和糖脂代谢的变化。结果:研究组治疗总有效率为83.33%,显著高于对照组63.33%的治疗总有效率(P<0.05)。治疗前,两组患者血清卵泡刺激素(Follicle Stimulating Hormone,FSH)、黄体生成素(Luteinizing hormone,LH)、雌二醇(Estradiol,E;)、睾酮(Testosterone,T)等性激素水平,空腹血糖(fasting plasma glucose,FPG)、空腹胰岛素(Fasting serum lisulin,FINS)、口服葡萄糖耐量试验(oral glucose tolerance test,OGTT)2 h血糖和胰岛素等糖代谢指标以及甘油三酯(Triglycerides,TG)、胆固醇(Total cholesterol,TC)、高密度脂蛋白(High density lipoprotein,HDL)和低密度脂蛋白(Low density lipoprotein,LDL)等脂代谢指标脂代谢指标比较均无显著差异(P>0.05);治疗后,所有患者血清FSH、LH、T、E;、TG、LDL、TC、FPG、FINS、OGTT 2h PG和OGTT 2h INS均较治疗前显著降低(P<0.05),而HDL较治疗前升高(P<0.05);研究组患者治疗后血清FSH、LH、T、E;、TG、LDL、TC、FPG、FINS、OGTT 2h PG和OGTT 2h INS均较显著低于对照组患者(P<0.05),而HDL显著高于对照组患者(P<0.05)。结论:二甲双胍联合炔雌醇环丙孕酮片治疗多囊卵巢综合征临床效果显著,可有效改善患者糖脂代谢水平。

Effect of Allicin on the Formation of Kidney Stones in Rats by Regulating the Expression of OPN and NF-κB Signaling Pathway

Objective:To investigate the effect of allicin on the formation of kidney stones in rats by regulating the expression of osteopontin(OPN)and nuclear factor-κB(NF-κB)signaling pathway.Methods:A total of 50 healthy adult male SD rats with SPF grade were selected and divided into five groups by random number and computer random combination,with 10 rats in each group.Except the blank group,the other four groups were given 2 m L/d mixed solution of 1%ethylene glycol+2%ammonium chloride to construct the nephrolith model.During the modeling process,the blank group and the model group were given normal saline by gavage.The positive group was given 600 mg/(kg·d)of potassium sodium hydrogen citrate granules by gavage,the low-dose group was given 7.5 mg/(kg·d)of allicin by gavage,and the high-dose group was given 15 mg/(kg·d)of allicin by gavage.After administration,renal function,urine related indicators,calcium oxalate crystallization score,OPN protein expression and NF-κB signaling pathwayrelated protein expression were observed and compared among the five groups of rats.Results:There were significant differences in kidney index,urea nitrogen(BUN)and blood creatinine(Cr)levels among the five groups(P<0.05).There were no differences in kidney index,BUN and Cr levels between the high-dose group and the positive group(P>0.05),and were all lower than those in the model group and low-dose group(P<0.05).There were significant differences in the levels of oxalic acid(OA),calcium(Ca),magnesium(Mg),and phosphorus(P)in the urine of five groups of rats(P<0.05).The high-dose group showed no difference in the levels of OA,Ca,Mg,and P compared to the positive control group(P>0.05),and all were lower than the model group and low-dose group(P<0.05).There were significant differences in the scores of calcium oxalate crystallization and the expression of OPN protein in the five groups(P<0.05).There was no difference in the scores of calcium oxalate crystallization between the high-dose group and the positive group(P>0.05).The expression of OPN protein was higher than that in the positive group(P<0.05),and both were lower than that in the model group and low-dose group(P<0.05).There were significant differences in the expression levels of NF-κB inhibitory protein-α(IκB-α)and NF-κB in five groups(P<0.05),and the expression levels of IκB-αand NF-κB in the high-dose group were lower than those in the model group,positive control group,and low-dose group(P<0.05).Conclusion:Allicin may inhibit the formation of kidney stones in rats by down-regulating the expression levels of OPN and NF-κB signaling pathway-related proteins,and a high dose of allicin can obtain a similar effect of kidney stones inhibition as that of potassium sodium hydrogen citrate granules.