特需病房护理信息系统应用中的问题分析及对策

目的对特需病房护理信息系统应用中出现的问题进行总结,探讨解决方法。方法2017年1—2月总结特需病房护理信息系统应用中的问题并分析原因,2017年3月起实施改进措施,包括:加强护士培训和质量控制、与医生密切合作、增强对医嘱的审核能力、双人核对医嘱、文字交接班、建立病房口服药品登记等。比较改进前后的护理质量相关指标。结果实施改进措施后,护士每日电脑操作耗时减少,护士发现及纠正问题医嘱的数量增加,给药错误防范次数增加,差异有统计学意义(P<0.05)。结论对特需病房护理信息系统实施改进措施有效提高了护士工作效率,预防和减少护理差错发生。     

Preparation of rGO@Fe3O4 nanocomposite and its application to enhance the thermal conductivity of epoxy resin

In this study, we report a simple method to improve the thermal conductivity of epoxy resin by using new magnetic composites as fillers. The rGO@Fe₃O₄ nanocomposite has been prepared by a solvothermal method, and its morphology and chemical structure were characterized and analyzed by various characterization methods. Afterwards, the rGO@Fe₃O₄/EP composite material was obtained in an external magnetic field, in which the rGO@Fe₃O₄ is uniformly dispersed in the epoxy resin matrix, arranged along the direction of the magnetic field. In addition, the orientation of rGO@Fe₃O₄ increases with the magnetic field intensity. After doping 30% (wt) rGO@Fe₃O₄ into epoxy resin and curing under a 500 Gs magnetic field, the rGO@Fe₃O₄/EP composite material is anisotropic and has a higher thermal conductivity (increased by 196.60%) parallel to the direction of the magnetic field compared to a pure ring oxygen resin.

A rGO@Fe₃O₄ nanocomposite was prepared by a solvothermal method. Then the rGO@Fe₃O₄/epoxy resin composite was cured in a magnetic field. This shows that rGO@Fe₃O₄ can enhance the heat-conductivity of epoxy resins.     

ⅢA-N2期非小细胞肺癌新辅助治疗的研究现状

ⅢA-N2期非小细胞肺癌(NSCLC)是一组异质性较大的疾病,最佳治疗模式仍存在争议。如何将化疗、放疗、靶向及免疫治疗等多种治疗手段合理的应用于这部分患者的新辅助治疗中,目前尚无定论。本文就NSCLC新辅助治疗相关研究进行综述,对不同新辅助治疗模式进行疗效及安全性方面的评估。     

1.5T 磁共振加速器X线束剂量学特性测试

目的 由于磁场会改变次级电子运动轨迹,继而影响剂量场分布,磁共振加速器(MR-Linac) X线束剂量学特性与常规加速器有差别。本项目旨在测量和分析1.5T MR-Linac的X线束剂量学特性。方法 中国医学科学院肿瘤医院于2019年5月安装1台瑞典医科达公司Unity型1.5T MR-Linac,使用磁场兼容工具对其进行测量,测量项目包括表面剂量、最大剂量点深度、射线质、离轴比曲线(OAR)中心位置、对称性、半影宽度、不同机架角度的输出量变化。结果 不同射野面积的平均表面剂量为40.48%,平均最大剂量点深度为1.25cm。10cm×10cm射野面积下,x轴方向的OAR中心位置往x₂侧偏移1.47mm,对称性为101.33%,两侧半影宽度分别为6.86mm和7.14mm;y轴方向的OAR中心位置偏移0.3mm,对称性为100.85%,两侧半影宽度分别为5.92mm和5.95mm。不同机架角度下输出量最大偏差达1.50%。结论 与常规加速器不同,MR-Linac不同射野面积表面剂量数值趋于一致,最大剂量点深度上升。x轴方向的OAR中心位置往x₂侧偏移,造成对称性变差和半影不对称。不同机架角度下的输出量变化明显,需要修正。     

Comparación de la producción vocal en niños con hipoacusia prelocutiva con adaptación audioprotésica e implante coclear con normooyentes

Introduction and objectivesInadequate auditory feedback in prelingually deaf children alters the articulation of consonants and vowels.The purpose of this investigation was to compare vowel production in Spanish-speaking deaf children with cochlear implantation, and with hearing-aids with normal-hearing children by means of acoustic analysis of formant frequencies and vowel space.MethodsA total of 56 prelingually deaf children (25 with cochlear implants and 31 wearing hearing-aids) and 47 normal-hearing children participated. The first 2 formants (F1 and F2) of the five Spanish vowels were measured using Praat software. One-way analysis of variance (ANOVA) and post hoc Scheffé test were applied to analyze the differences between the 3 groups. The surface area of the vowel space was also calculated.ResultsThe mean value of F1 in all vowels was not significantly different between the 3 groups. For vowels /i/, /o/ and /u/, the mean value of F2 was significantly different between the 2 groups of deaf children and their normal-hearing peers.ConclusionBoth prelingually hearing-impaired groups tended toward subtle deviations in the articulation of vowels that could be analyzed using an objective acoustic analysis programme.     

Efferent projections of the paratrigeminal nucleus in the rat

The efferent projections of the paratrigeminal nucleus in the rat were investigated by means of retrograde transport techniques. Injections were made in most of the supraspinal structures known to receive afferents from the spinal cord or the trigeminal nucleus caudalis. Spinal injections were also performed. Dense paratrigeminal efferents were seen to be directed to the nucleus of the solitary tract and to the peribrachial area, the latter including the cuneiformis and parabrachial nuclei. Projections were mostly ipsilateral. These results are discussed in relation to a possible role of the paratrigeminal nucleus in thermoreception and/or vegetative regulation processing.     

缺血预适应对肢体缺血再灌注大鼠肝脏的保护效应

目的 观察缺血预适应(IPC)对大鼠肢体缺血再灌注后肝脏损伤的影响,以进一步探讨IPC对肢体缺血再灌注后肝脏功能的保护作用。方法 实验用雄性Wistar大鼠18只,随机分为对照(Control)组,缺血再灌注(IR)组和缺血预处理(IPC IR)组．每组6只。分别测定血浆谷草转氧酶(ALT)、谷丙转氨酶(AST)、乳酸脱氢酶(LDH)．血浆和肝组织超氧化物歧化酶(SOD)、黄嘌呤氧化酶(XOD)、丙二醛(MDA)的含量变化及肝组织的湿/干重比值(W／D)、髓过氧化物酶含量(MPO)及DNA双链百分率(Ratio of DNA Chain％)。结果 发现IPC减轻了肢体IR后引起的ALT、AST、LDH、XOD、MDA、MPO、W／D含量的升高．并且增加了SOD以及肝组织中DNA双链百分率。结论 IPC对肢体IR继发的肝脏功能损伤具有保护作用。