组织瓣修复口腔颌面部缺损的护理研究

口腔颌面部的外伤及恶性肿瘤等疾病会导致面部组织的缺损,对患者的美观度及功能等产生一定 的影响。组织瓣修复在改善患者口腔颌面部缺损以及外观上具有积极的临床效果,但其手术治疗效果与术 后护理具有密切的联系。本文对组织瓣移植进行概述,并对组织瓣修复口腔颌面部缺损的护理作一综述。     

Static and Fatigue Behaviour of Double-Lap Adhesive Joints and Notched Metal Samples Reinforced by Composite Overlays

The use of composite overlays to increase the fatigue life of notched steel samples is discussed in this paper. For such purposes, in the first set of studies, static and fatigue tests as well as the detailed analytical and numerical analyses for samples with double-lap joints were performed. Based on such studies, the shapes of the composite overlays were set. For a better understanding of the failure forms of the investigated adhesive joints, the experimental studies were monitored with the use of digital image correlation. In the second set of experimental studies, the static and fatigue tensile tests were performed for steel samples with a rectangular opening with rounded corners reinforced by composite overlays. The different shapes (square 45 × 45 mm and long stripes 180 × 15 mm) and composite materials (GFRP and CFRP) were used as overlays. The obtained improvement of fatigue life was in the range of 180–270% in the case of the rectangular overlays and 710% in the case of application of the overlays in the form of the long stripes. This was also confirmed by numerical analyses in which a reduction in the stress concentration factor from 2.508 (bare sample) through 2.014–2.183 (square 45 × 45 mm overlays) to 1.366 (overlays in the form of long stripes 180 × 15 mm) was observed.     

Evidence-Based Nutrition Interventions Improved Adolescents’ Knowledge and Behaviors in Indonesia

Adolescence is a nutritionally vulnerable and critical life stage. However, few programs and policies focus on improving adolescent nutrition in Indonesia. To address this gap, we implemented a gender-responsive package of interventions: (1) breakfast and weekly iron-folic acid supplementation (WIFS), (2) a school-based nutrition education program, and (3) a social behavior change communication strategy. We surveyed 514 adolescents at baseline (2019) and endline (2020) in Klaten and Lombok Barat districts in Indonesia. The survey included a knowledge assessment on nutrition, as well as indicators of attitudes and behaviors on diet, physical activity, and WIFS. We employed multivariable linear and logistic regression to test for pre–post intervention differences. Overall knowledge was significantly higher post-intervention (β: 3.3; 95% confidence interval [CI]: 2.6, 3.9). Diet diversity was high at both timepoints, however, at post-intervention there was significantly higher odds of consuming vitamin A-rich fruits and vegetables (Odds Ratio [OR]: 1.5; 95% CI: 1.1, 2.0) and lower odds of consuming sugar-sweetened beverages (OR: 0.4; 95% CI: 0.3, 0.5). Post-intervention, there was higher odds of reporting 60 min of daily physical activity (OR: 2.3; 95% CI: 1.7, 3.2) and WIFS among girls (OR: 6.7; 95% CI: 1.5, 30.9). The package of interventions may be a promising first step to improving adolescent nutrition in Indonesia.     

LINC00240 knockdown inhibits nasopharyngeal carcinoma progress by targeting miR‐26a‐5p

ObjectiveThis study intended to explore the regulatory functions of LINC00240 on nasopharyngeal carcinoma (NPC).MethodsMiR‐26a‐5p inhibitor, mimic, and siLINC00240 were transfected into NPC cells. QRT‐PCR was employed to assess miR‐26a‐5p and LINC00240 expressions. The targeting relationship of LINC00240 and miR‐26a‐5p was analyzed through dual luciferase reporter and RNA immunoprecipitation assay. Cell counting kit‐8 assay, colony formation assay, flow cytometry assay, wound healing assay, Transwell assay and in vitro angiogenesis assay were adopted for the evaluation of the effects of LINC00240 or miR‐26a‐5p and LINC00240 on NPC cells regarding cell proliferation, apoptosis and cycle, migration, invasion, and angiogenesis. EZH2, cell cycle, and epithelial‐mesenchymal transition (EMT)‐related protein expression was tested through Western blot.ResultsLINC00240 had a high expression in NPC tissues and cell lines. Silenced LINC00240 significantly suppressed the 5‐8F and HK1 cell proliferation, invasion, migration, and angiogenesis, but raised cell apoptosis, and cells were blocked in G0/G1 phase. MiR‐26a‐5p was a target of LINC00240. MiR‐26a‐5p upregulation suppressed the NPC cell proliferation, migration, invasion, angiogenesis, N‐cadherin and EZH2 expression, while it elevated apoptosis and p21, p27 and E‐cadherin expressions, whereas miR‐26a‐5p downregulation performed conversely. LINC00240 knockdown partially offset the effects of miR‐26a‐5p downregulation on cell proliferation, migration, invasion, angiogenesis, apoptosis, and EZH2.ConclusionLINC00240 knockdown restrained cell proliferation, invasion, migration, and angiogenesis, while it advanced apoptosis via miR‐26a‐5p in NPC by EZH2 inhibition.     

小牛血清蛋白提取物对家兔角膜碱烧伤治疗机制的研究

目的探讨小牛血清蛋白提取物（deproteinised calf blood extract,DCBE）对角膜碱烧伤的治疗作用机制。方法制作兔右眼碱烧伤模型,实验组、对照组和安慰组于烧伤后分别立即用20%小牛血清蛋白提取物、表皮生长因子和0.9%的生理盐水点眼,每日4次。分别于1、3、7、14天进行角膜荧光素钠染色照相后处死做常规HE染色病理切片和测定角膜的乳酸和丙酮酸含量。结果碱烧伤后第1、3、7、14天,实验组、对照组和空白组在角膜荧光素钠染色,HE病理染色及乳酸、丙酮酸有显著性差异。结论小牛血清蛋白提取物明显能抑制角膜碱烧伤后乳酸和丙酮酸的含量,进而促进碱烧伤后角膜的组织修复。     

传染病新特点与口岸卫生检疫应对

目的提高国境口岸应对传染病的新特点的能力。方法分析传染病新近出现新的特点和趋势,提出国境口岸卫生检疫的应对措施。结果应对传染病出现全球化、卷土重来的新特点,口岸卫生检疫工作任重道远,加强国际、国内、区域间及人医与兽医的合作,调整卫生检疫模式及内容,建立有效的防控体系。结论在传染病全球化和增多的情况下,建立有效的卫生检疫模式。     

体育运动常见的下肢关节韧带扭伤机理及防治

目的探讨体育运动中常见的下肢关节韧带扭伤机理及防治措施。方法对锦州师专体育系2003级和2004级学生共320人进行问卷调查,对320份有效问卷进行归纳总结并对数据进行统计和分析。结果排球、篮球、足球、跳高、跳远、跑步等运动项目中常出现踝关节韧带扭伤,排球、篮球、足球、体操、跳箱等运动项目中常出现膝关节韧带扭伤;出现扭伤后,2003级学生的处理方法对损伤恢复效果好于2004级学生,预防意识更强,措施更得当。结论踝关节和膝关节韧带扭伤是体育运动中常见的下肢关节韧带扭伤,它们与相关的运动项目有关;扭伤的机理除了与解剖结构、生理机能有关外,还与运动的技术动作,理论知识,实践经验,场地器械等有关;正确地处理和有效预防下肢关节韧带扭伤对促进身体健康和体育运动的开展有积极意义。     

结直肠癌长链非编码RNA CASC11和原癌基因c-myc的表达及其与复发转移的关系

目的:探讨长链非编码RNA（lncRNA）CASC11和原癌基因c-myc在结直肠癌中的表达及其与复发转移的相关性。方法:收集2016年2月至2018年7月河北省唐山市协和医院收治的90例结直肠癌患者的癌组织及癌旁组织标本,体外培养正常结肠上皮细胞株CCD841及结直肠癌细胞株SW480、SW620、HCT116、HT...     

Evaluation of the High- and Low-Temperature Performance of Asphalt Mortar Based on the DMA Method

Asphalt mortar is a typical temperature-sensitive material that plays a crucial role in the performance of asphalt mixture. This study evaluates the high- and low-temperature performance of asphalt mortar based on the dynamic mechanical analysis (DMA) method. Temperature-sweep tests of asphalt mortars were conducted using the DMA method under fixed strain level, frequency, and heating rate conditions. The dynamic mechanical response curves, characteristic temperature, and other indices were obtained and used to investigate the high- and low-temperature performance of asphalt mortar. The results showed that the phase transition temperatures T₁, T₀, and T_g can be used to evaluate the low-temperature performance of asphalt mortar. Additionally, they had a good linear relationship, and the evaluation results were consistent. Meanwhile, T₂, E₆₀, and tan(δ)_max indicators can effectively evaluate the high-temperature performance of asphalt mortar. Asphalt plays a key role in the performance of asphalt mortar. Mortars with neat asphalt A70 and modified asphalt AR had the worst and best high- and low-temperature performances, respectively. Furthermore, the finer gradation improved the low-temperature performance of asphalt mortar, while the coarser gradation improved the high-temperature properties of modified asphalt mortars but had the opposite effect on neat asphalt A70.     

广西凌云县1951-2015年疟疾流行分析

目的 了解凌云县疟疾流行趋势,为消除疟疾后继续巩固成果提供建议.方法 收集凌云县1951-2015年疟疾发病数、发热血检及居民普查血检调查、媒介调查、疟疾病人等资料,采用描述性方法进行分析.结果 1951-2015年凌云县共报告疟疾病例数57 619例病例,平均年发病率为57.5/万,占传染病发病数的22.42％;死亡52人,病死率0.09％.1980-2015年居民发热病人血检405 854人,阳性753例,其中间日疟占77.42％(583/753),恶性疟占22.44％(169/753);荧光抗体阳性率由1988年的1.4％(7/500)降至2000-2009年的0.62％ (23/3 725);中华按蚊为主要传疟蚊种.通过几十年来的综合防治,疟疾发病率从1958年的316.05/万下降到1985年的1/万以下,于2000年10月份达到了基本消除疟疾目标.从2005年起已无本地疟疾病例,所报告的病例均为输入性病例,2014年12月通过百色市级消除疟疾考核.结论 落实疟疾综合防治措施效果显著,将继续加强“三热”病人血检监测和输入性疟疾病例监测,巩固消除疟疾成果.