微波配合中西药物雾化吸入治疗慢性咽炎临床观察

目的：探讨微波配合中西药物雾化吸入治疗慢性咽炎的疗效.方法：将门诊确诊为慢性咽炎的628例患者随机分成治疗组314例和对照组314例.治疗组行微波治疗后给予中西药物雾化吸入治疗,对照组给予中西药物雾化吸入治疗,14天为一疗程,比较两组疗效.结果：治疗组显效279例、有效35例、无效0例;对照组显效109例、有效182例、无效23例,治疗组治愈率明显高于对照组,X2=5.77（0.11〈P〈0.05）,两组比较有显著性差异.治疗组病程＜6天279例、6～12天35例、＞12天0例;对照组病程＜6天0例、6～12天26例、＞12天288例,治疗组治疗病程显著短于对照组,X2=93.09（P〈0.01）,两组比较有显著性差异.结论：微波配合中西药物雾化吸入能明显提高慢性咽炎的治愈率,缩短病程.     

经皮椎弓根内固定开放减压联合微波高温灭活治疗脊柱转移瘤的临床研究

目的 微波治疗四肢和骨盆骨肿瘤已取得满意的临床疗效,由于脊柱解剖结构的特殊性,微波应用面临挑战.本研究探讨经皮椎弓根内固定开放性减压联合微波高温灭活治疗脊柱转移瘤的临床疗效.方法 回顾性分析广西医科大学附属肿瘤医院2013-10-15-2015-02 15收治的23例脊柱转移瘤患者的临床资料.所有患者均采用经皮椎弓根内固定开放减压联合微波高温消灭火治疗脊柱转移瘤.其中男9例,女14例;年龄42～72岁,平均年龄56岁,中位年龄62岁.Tomita预后评分3～6分.采用疼痛视觉模拟评分(VAS)比较术前、术后疼痛情况,Frankel分级评定患者神经功能的改善情况及观察患椎椎体后缘的高度变化.结果 23例患者手术均顺利完成,未发生脊髓和神经根损伤或加重情况.术后3dVAS评分(3.8±1.4)和末次随访VAS评分(4.1±1.5)较术前(7.9±2.6)有明显改善(t=-6.659,P＜0.001;t=-6.071,P＜0.001),术后3d椎体后缘高度(15.6±3.2) mm与术前(10.5±2.5) mm比较差异有统计学意义(t=6.023,P＜0.001),与末次随访(14.6±2.8)比较,差异无统计学意义(t=1.128,P=0.133);末次随访时Frankd分级,A级1例,B级2例,C级6例,D级9例,E级5例,与术前比较差异有统计学意义,x2=10.856,P=0.028.随访过程中无肿瘤复发,无椎体骨折塌陷,无内固定物松动、断裂和移位.结论 经皮椎弓根内固定开放性椎管减压内固定联合微波高温灭活术可迅速减轻患者的疼痛症状,在有效维持脊柱稳定性的同时可充分解除脊髓压迫,控制局部复发,取得满意的治疗效果,但远期效果有待进一步观察.     

微波辐射聚合对树脂义齿基托孔隙的影响

目的：探讨不同条件微波辐射聚合对树脂义齿基托孔隙的影响。方法：用4种不同的聚合方法2种树脂基托材料制作3种规格的标准试样120件,分为MH1、MH2、MH3和CH四组,每组每种材料和厚度规格的试样各5件。每试样截取3个测试面,用计算机显微摄影方法采集孔隙图像,记录孔隙的密度数据,统计分析。4种聚合方法分别是：实验组为3种不同的微波辐射聚合方法（Microwave Heating treatment,MH）即①MH1：162W,12 min分次间歇辐射;②MH2：162W,12 min持续辐射;③MH3：900W,3 min持续辐射;对照组选用传统水浴聚合方法（Conventional Heating treatment,CH）即（74±1）℃,12 h水浴恒温。2种材料即传统树脂（Conventional Resin,CR）和微波专用树脂（Microwave special design Resin,MR）。3种规格的试样分别为40 mm×10 mm×2 mm,40 mm×10 mm×4 mm和40 mm×10 mm×6 mm。结果：不同聚合方法,不同材料和不同厚度因素所得树脂试样的孔隙密度差异均有统计学意义（F聚合=3826.40,P〈0.0001;F材料=27.13,P〈0.0001;F厚度=37.81,P〈0.0001）。MH1与CH组两者之间试样的孔隙密度差异无统计学意义（F=0.41,P=0.5209）。MH2,MH3与CH组以及MH1,MH2,MH3组两两之间试样的孔隙密度差异均有统计学意义（FMH2与CH=825.64,FMH3与CH=8661.88,FMH1与MH2=789.30,FMH2与MH3=4139.03,P值均小于0.0001）。2 mm,4 mm和6 mm试样的孔隙密度两两之间差异均有统计学意义[F2与4=27.37（P〈0.0001）,F2与6=74.50（P〈0.0001）,F4与6=11.56（P=0.0010）]。聚合方法与材料（F=9.47,P〈0.0001）,聚合方法与厚度（F=84.56,P〈0.0001）,聚合材料与厚度（F=4.00,P=0.0213）两两之间均有交互作用。结论：微波低功率、短时间、间歇辐射可使树脂基托孔隙密度降到最小。     

Hard Carbon Embedded with FeSiAl Flakes for Improved Microwave Absorption Properties

Carbon-based composites have been proven to be strong candidates for microwave absorbers in recent years. However, as an important member, magnetic hard carbon (HC)-based composites have rarely been studied in the field of microwave absorption. In this study, HC embedded with FeSiAl (FeSiAl@HC) was synthesized by pyrolyzing a mixture of FeSiAl flakes and phenolic resin (PR). The as-synthesized HC-FeSiAl exhibited a layered structure, and the detailed microstructures were modified by changing the mass ratio of FeSiAl flakes and PR. Thus, the as-synthesized HC-FeSiAl exhibited tunable magnetic properties, wealthy functional groups, excellent thermal stability, and enhanced microwave absorption properties. The optimal minimum reflection loss is lower up to −36.1 dB, and the effective absorption bandwidth is wider up to 11.7 GHz. These results indicated that HC-FeSiAl should be a strong candidate for practical applications of microwave absorption, which may provide new insight into the synthesis of magnetic HC-based composites.     

The Influence of Microwave Treatments on Bioactive Compounds and Antioxidant Capacity of Mentha piperita L.

Microwave extraction is becoming a popular option in many fields, especially for bioactive compounds from medicinal plants. This paper addresses the application of microwaves in the process of extracting bioactive compounds (phenols, flavonoids, chlorophyll) from peppermint with antioxidant capacity in order to highlight the influence of the microwave field on the quality of the final product in comparison with the control samples. The Mentha piperita L. is a rich source of phenols. The total phenol content after applying the MW treatments significant increased and varied between 25.000 ± 1.992 and 391.687 ± 20.537 mg GAE/100 g dw compared to the untreated sample (8.089 ± 2.745 mg GAE/100 g dw). The same trend was also recorded in the case of the flavonoid and pigment content in peppermint leaves following the application of microwave treatments. The obtained results were investigated using chemometric multivariate analysis. The main purpose of our research was to compare the possibilities of total or partial substitution of conventional extraction technologies with the microwave extraction technology, and also to highlight the existing differences in the amount of total phenols and flavonoids extracted from peppermint plants in different processing conditions. Through microwave processing, a significant increase in polyphenolic compounds is obtained.     

Crystal Structures and Microwave Dielectric Properties of Novel MgCu2Nb2O8 Ceramics Prepared by Two-Step Sintering Technique

In this work, novel MgCu₂Nb₂O₈ (MCN) ceramics were synthesized by the two-step sintering (TSS) technique, and the phase composition, crystal structures, and microwave dielectric properties were comprehensively studied. X-ray diffraction (XRD) and Raman analysis demonstrated that MCN ceramics are multi-phase ceramics consisting of MgNb₂O₆ and CuO phases. X-ray photoelectron spectroscopy (XPS) was utilized to investigate the chemical composition and element valence of MgCu₂Nb₂O₈ ceramics. Scanning electron microscopy (SEM) analysis demonstrated dense microstructures in the MCN ceramics prepared at a sintering temperature of 925 °C. The microwave dielectric properties were largely affected by the lattice vibrational modes and densification level of the ceramics. The outstanding microwave dielectric properties of ε_r = 17.15, Q × f = 34.355 GHz, and τ_f = −22.5 ppm/°C were obtained for the MCN ceramics sintered at 925 °C, which are results that hold promise for low temperature co-fired ceramic (LTCC) applications.     

电感藕合等离子体-质谱法测定玫瑰花中有害元素残留

目的建立电感藕合等离子体-质谱(ICP-MS)法,检测中药材玫瑰花中铅(Pb)、镉(Cd)、砷(As)、汞(Hg)、铜(Cu)、锑(Sb)、锡(Sn)、铬(Cr)、镍(Ni)、钡(Ba)、锰(Mn)、铊(Ti)、银(Ag)、铍(Be)、镝(Dy)、铝(Al)16种元素的含量。方法以微波消解法制备供试品,全定量法采集数据。结果16种元素标准曲线线性关系良好,线性相关系数(r)都大于0.999 5,检出限为0.002～0.455μg/kg,各元素回收率在82%～103%之间,RSD<5%。结论该方法简便、快速、灵敏、准确,适于中药材样品的测定。     

白矾的微波法煅制研究

目的:采用微波干燥技术,研究一种快速、经济的白矾煅制方法.方法:将一定质量的白矾置微波炉中加热,测定结晶水蒸发速度,然后从煅制效率和枯矾质量两方面与传统煅制方法、远红外方法、电热烘箱法进行比较,并初步建立了微波炮制品的质量标准.结果:微波法煅制白矾速度快,生产成本低,枯矾外观及水溶性好,生产环境污染小.结论:微波法是一种较理想的白矾煅制方法.     

微波灭菌对黄芩微生物限度的影响

目的 研究在洁净环境中,相同温度、含水量条件下,不同微波灭菌时间对黄芩微生物限度的影响.方法 对计数方法进行验证,用薄膜过滤法进行经微波灭菌处理后的黄芩粉末的微生物限度检查.结果 在一定时间范围内,随着灭菌时间的增加,黄芩所含细菌、霉菌、酵母菌逐渐减少.结论 微波灭菌时间、温度以及药材含水量对黄芩微生物限度有直接影响.