Fever glove hand-shake method safe blood collection from children's fingertips in COVID-19 fever clinic

BACKGROUND During the coronavirus disease 2019(COVID-19)epidemic,the fever clinic is an important link for screening and diagnosing whether a patient is infected with the novel coronavirus.Blood collection from children’s fingertips is a commonly used detection method;however,in children,the blood collection process may cause discomfort and resistance.To address this problem,the use of heating gloves combined with hand swinging can be considered for fingertip blood collection in children.AIM To explore the application of fever gloves with the handshaking method for fingertip blood collection from children in fever clinics during the COVID-19 epidemic.METHODS A total of 100 children were selected for fingertip blood collection at the fever clinic of our hospital from June 2022 to June 2023 and were divided into two groups using a randomized numerical table method,with 50 cases in each group,including the control and observation groups.The patients in the control group followed the doctor's instructions to cooperate with the routine fingertip blood collection method,and the patients in the observation group followed the doctor's instructions to cooperate with the static fever gloves with the shaking hands method of children's fingertip blood collection.The level of the six blood routine and collection indexes,and the satisfaction of the examination of the patients in the peripheral blood group and the fever gloves with the shaking hands method of the children's fingertip blood collection group were compared.RESULTS The red and white blood cell count,hemoglobin,and red blood cell pressure volume in the observation group were higher than those in the control group(P<0.05);the platelet count in the control group was lower than that in the observation group(P<0.05);the number of times of squeezing the fingertip,the average time of blood collection,and the score of puncture pain in the observation group were significantly better than those in the control group(P<0.05);and satisfaction with the routine blood examination in the observation group was greater than that in the control group.CONCLUSION The application value of the fever gloves with shaking hands method for children's fingertip blood collection was better,the accuracy of examination indexes was higher,and patient satisfaction with the examination was greater.

Imaginary displacement method for analysis of multi-fingered robot hands grasping stability

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高风险科室手卫生依从性电子监测与人工监测方法的卫生经济学效益

目的比较手卫生依从性电子监测(electronic system-based monitoring,ESM)与人工监测(manual paper-based monitoring,MPM)的经济学效益,为临床高风险科室手卫生监测方法提供参考。方法收集某大型三级甲等医院的呼吸与危重症医学科、创伤与显微骨科、儿科重症监护室、感染科、关节与运动医学科、呼吸与危重症医学科普通病区、神经内科、神经外科、食管纵膈与淋巴肿瘤放化疗科、头颈与儿童肿瘤放化疗科、血液内科11个高风险科室,2022年12月—2023年5月ESM和MPM两种手卫生监测方法实施期间的成本投入和效果产出,应用TreeAge Pro 2022软件构建决策树模型,测算成本效果、成本效率、霍桑效应和间接成本效益。结果ESM方法的总成本(4868.55元)低于MPM方法(7122.12元),但ESM方法的手卫生依从率(61.33%)低于MPM方法(78.79%)。MPM方法的成本效果比(9039.37元)高于ESM方法(7938.28元),增量成本效果比为17.46%。MPM方法的成本效率比(72013.35元)明显高于ESM方法(8813.45元)。MPM方法的霍桑效应(59.45%)高于ESM方法(47.90%)。MPM方法的成本效益比(2894.70元)低于ESM方法的成本效益比(4765.98元)。当支付意愿低于18500元时,ESM方法是更具成本效果的选择;当投入高于该阈值时,MPM方法是更具成本效果的选择。结论对于感染控制高风险科室,ESM方法的成本效果、成本效率、成本效益均优于MPM方法,但两者霍桑效应的差异无统计学意义。

双须光电法分梳绒测长仪与手排法的测试结果对比

研制出双须光电法分梳绒测长系统2.0Z版,利用该仪器测试25种分梳山羊绒试样的纤维长度,同时采用GB 18267—2013中的手排法测试上述试样的纤维长度,根据两种测试方法所得结果对比验证2.0Z版测长系统的精确度和稳定性。结果表明,采用手排法测试分梳绒长度时,取样存在样间差异,并且手排法测试样品量少、随机误差高,而双须光电法测试结果稳定。双须光电法分梳绒测长系统2.0 Z版和手排法长度测试的一致性较高,特别是平均长度指标的平均偏倚小于2 mm,相关系数均大于0.8,表明分梳绒测长系统2.0Z版的精确度高。

光子晶体结构生色真丝织物的制备及应用研究

为实现真丝织物的结构生色,文章分别利用真空辅助过滤法和手绘法在白色真丝织物上构筑光子晶体结构。进一步探究真空辅助过滤法中微球组装液体积浓度对结构色的影响规律,分析微球在真丝织物上形成光子晶体运动机制,讨论真丝织物上光子晶体结构色的虹彩效应,并探究手绘法在真丝织物光子晶体结构生色中的应用效果。结果表明:真空辅助过滤法中聚(苯乙烯-甲基丙烯酸),即P(St-MAA)微球组装液的体积浓度为2.4 L/m^(2)时,真丝织物的两面能同时获得光子晶体结构色,此时正反面结构色的反射率峰值在18%左右;在真空辅助过滤法中,P(St-MAA)微球在真丝织物上形成光子晶体结构的过程遵循“先反后正”堆积原则,即织物反面先形成光子晶体,随后微球进一步透过织物堆积在正面。此外,该光子晶体结构生色真丝织物的虹彩效应不明显,与常规染料或颜料着色效果接近;手绘法可以获得图案化的光子晶体生色结构,较适合于个性化加工。该研究为光子晶体结构生色在真丝织物着色中的应用提供参考。

基于用户需求综合模型与VIKOR评价的手持式紫外消毒灯设计

在目前疫情放开管控的背景前提下,为增强人们的消毒意识,减小病毒感染风险,针对手持式紫外消毒灯进行研究及设计。以用户需求为基础,利用KJ法归纳总结用户需求,利用FAHP模型量化用户需求并计算权重,利用FBS模型将需求转化为具体的产品结构,接着根据转化结果进行手持式紫外消毒灯的方案设计,最后运用VIKOR法进行评价得出最佳方案。通过实践可知,利用综合模型将用户需求进行分级、量化与功能结构转化,有助于使设计更符合用户的实际需求,也能使设计的可实现性更强。

基于Seed-PCG法的列车-轨道-地基土三维随机振动GPU并行计算方法

为了解决列车-轨道-地基土三维有限元模型随机多样本计算效率低的问题,本文提出了一种基于Seed-PCG法的高效并行计算方法。基于有限元法和虚拟激励法建立轨道不平顺激励下的三维列车-轨道-地基土耦合随机振动分析模型;针对车致地基土随机振动分析产生的多右端项线性方程组求解问题,采用Seed-PCG方法进行求解。通过PCG方法求解种子系统得到的Krylov子空间进行投影,以改进其余线性方程组的初始解和对应的初始残量,有效提高了PCG法的收敛速度,最后,在MATLABCUDA混合平台上开发了并行计算程序。数值算例表明:相同计算平台下的该方法相比多点同步算法获得了104.2倍的加速;相比PCG法逐个求解方案减少了18%的迭代次数,获得了1.21倍的加速。

“合谷刺法”联合镜像疗法对脑卒中恢复期患者手功能的影响

目的“合谷刺法”联合镜像疗法对脑卒中恢复期偏瘫患者手功能的影响。方法选取2022年1月至2023年2月脑卒中后恢复期偏瘫患者80例。采用简单随机法分为对照组和观察组各40例。对照组予基础药物和常规康复治疗,观察组在对照组基础上采用“合谷刺法”联合镜像疗法治疗。比较两组患者治疗前后FMA评分、Brunnstrom分级及MBI评分情况,并观察两组不良反应。结果治疗4周,观察组FMA评分、Brunnstrom分级及MBI评分均高于对照组(P<0.05),且无明显不良反应发生。结论“合谷刺法”联合镜像疗法能促进脑卒中恢复期患者手功能的恢复,提高生活质量,临床疗效显著。

基于实际出行场景的整车驾控性能测试与评价

为了直观地评价中国消费者实际出行场景的整车驾控性能,提出一种驾控性能测试与评价方法。根据中国路况,结合工程经验与国家标准,选择驾控性能测试工况与测试工况中的评价指标及其权重,选取3款车型在测试工况下进行道路试验,通过数据分析得出指标限值。结果表明,3款车型的驾控性能得分与车辆级别、能源类型相关,且与驾驶员主观驾驶感受一致,说明此驾控性能测试与评价方法具有可行性与准确性,可以为开发或验证阶段的工程样车进行整车驾控性能的策略标定及验证测评。

Effects of Processing Methods on Mechanical Properties of Alkali Treated Bagasse Fibre Reinforced Epoxy Composite

Effects of the processing methods on the mechanical properties of treated bagasse fibre reinforced epoxy composite were evaluated. The composite materials were processed by employing hand lay-up and compression moulding methods and fibres were treated with NaOH solution. The composite samples were subjected to tensile, flexural and impact tests. Based on the findings, compression moulding method produced better mechanical properties compared to the composites manufactured by hand lay-up method. The results showed that the tensile strength and Young’s modulus of the samples produced by compression moulding method increased by 77 percent and 47 percent respectively (at optimal fibre loading) compared to those produced by the hand lay-up method. The results also showed noticeable improvements in the impact strength of the material produced by compression moulding method, with impact strength of 11.5 kJ/m2 against the samples produced by hand lay-up method, with impact strength of 7 kJ/m2.

BLOCK BIDIAGONALIZATION METHODS FOR MULTIPLE NONSYMMETRIC LINEAR SYSTEMS

The symmetric linear system gives us many simplifications and a possibility to adapt the computations to the computer at hand in order to achieve better performance. The aim of this paper is to consider the block bidiagonalization methods derived from a symmetric augmented multiple linear systems and make a comparison with the block GMRES and block biconjugate gradient methods.

Palm Vein Authentication Based on the Coset Decomposition Method

The palm vein authentication technology is extremely safe, accurate and reliable as it uses the vascular patterns contained within the body to confirm personal identification. The pattern of veins in the palm is complex and unique to each individual. Its non-contact function gives it a healthful advantage over other biometric technologies. This paper presents an algebraic method for personal authentication and identification using internal contactless palm vein images. We use MATLAB image processing toolbox to enhance the palm vein images and employ coset decomposition concept to store and identify the encoded palm vein feature vectors. Experimental evidence shows the validation and influence of the proposed approach.

Characteristics Study of Portable Hand-Held Phone Antenna by MoM

The characteristics of one kind of handset antenna are analyzed by the method of moments. By using the Pocklington equation and the Galerkin method, the current distribution on the handset antenna is calculated, the input impedance and radiation patterns are obtained. In addition, the characteristics of monopoles mounted on conducting chassis box with different sizes are analyzed. The results show that the size of the conducting chassis box has significant effect on the performance of the handset antenna. Therefore, appropriately changing the size of the conducting chassis box may improve the performance of the handset antenna.

Photon tunneling and transmittance resonance through a multi-layer structure with a left-handed material

This paper investigates the photon tunneling and transmittance resonance through a multi-layer structure including a left-handed material（LHM）. An analytical expression for the transmittance in a five-layer structure is given by the analytical transfer matrix method. The transmittance is studied as a function of the refractive index and the width of the LHM layer. The perfect photon tunneling results from the multi-layer structure, especially from the relation between the magnitude of the refractive index and the width of the LHM layer and those of the adjoining layers. Photons may tunnel through a much greater distance in this structure. Transmittance resonance happens, the peaks and valleys appear periodically at the resonance thickness. For an LHM with inherent losses, the perfect transmittance is suppressed.

Propagation of Gaussian beams family through a Kerr-type left-handed metamaterial

In this paper the propagation of elegant Hermite-cosh-Gaussian, elegant Laguerre Gaussian, and Bessel Gaussian beams through a Kerr left-handed metamaterial （LHM） slab have been studied. A split-step Fourier method is used to investigate the propagation of laser beams through this media. Numerical simulation shows that Gaussian beams have different focusing behaviors in a Kerr LHM slab with positive or negative nonlinearity. Beam focusing happens in slabs with positive nonlinearity and not in slabs with negative nonlinearity; however, negative nonlinearity is required for a Kerr LHM slab to act like a lens. Additionally, the focusing properties of beams can be controlled by controlling the thickness of the slab or the input power of the incident beam. A multilayer structure is also proposed to have beam focusing by thinner slabs and passing longer distances.

Research of electromagnetic field in different length left-handed material slab

Finite-difference time-domain(FDTD) method is used to simulate the propagation of electromagnetic wave in left-handed material slab(LHMs) with cold plasma model The effects of optical propagation in the left-handed material compared to convex lens are discussed.The wider the LHMs is,the stronger electric field of focusing image in left-handed material slab is confirmed by the simulation with various slab length.However,the outer image point location would slightly moves to the LHMs side when the length of LHMs is reduced.

厘清“三驾马车”贡献推进中国经济稳健发展

“三驾马车”各自对中国经济增长有着不同的拉动能力和实际效果,支出法对其难以准确核算。基于非竞争型投入产出模型,测算分析2002年以来国内最终消费、资本形成和出口这三大需求因素对中国不同时期GDP形成的拉动、对经济增长带来的效果与特征,可厘清“三驾马车”对入世以来中国经济的实际贡献。研究表明,长期以来内需一直是中国经济增长的主要动力,尤其是国内最终消费,已成为促进经济增长的重要引擎;消费的实际贡献在2008年以来稳步增强、保持领先,而投资和出口对中国第二产业的发展发挥着关键的支撑作用。扩大内需仍是中国经济未来中长期发展的重中之重,中国经济的稳健发展需要充分发挥消费对服务业、投资对制造业和建筑业的强大拉动力,需要注重在扩大消费和扩大投资的结合点上发力,同时,还要进一步扩大对外开放,以稳定出口对中国经济发展的促进作用。

移动流行区间法在北京市西城区手足口病流行强度阈值研究中的应用

目的探讨移动流行区间法在北京市西城区手足口病流行强度预警中的可行性,评估疾病流行强度,为政府决策提供依据。方法收集2010—2018年北京市西城区第5~36周手足口病周发病率数据,移动流行区间法对数据进行交叉验证,筛选最优模型,模型评价指标包括灵敏度、特异度和约登指数,根据计算结果,确定2019年第5~36周手足口病流行强度分级阈值,并对北京市西城区2019年手足口病流行强度进行估计。结果最优参数取值为1.5,模型各项评估指标分别为:灵敏度0.95、特异度0.83和约登指数0.78。根据模型预测结果,2019年第5~36周手足口病流行开始阈值为1.15/10万,结束阈值为1.15/10万,流行强度达到中、高和极高程度时阈值分别为4.55/10万和7.51/10万和8.45/10万,流行强度处于低流行水平。实际2019年第19周手足口病周发病率达到流行开始阈值,未超过中等程度流行阈值,手足口病流行强度处于低流行水平。结论移动流行区间法可应用于北京市西城区手足口病预警,通过流行阈值对流行强度进行评估,效果较好。

食物交换份手测量饮食教育在居家老年慢性心力衰竭患者中的应用

目的探讨食物交换份手测量饮食教育在居家老年慢性心力衰竭患者中的应用效果。方法老年慢性心力衰竭患者90例随机分为对照组和试验组,每组45例。2组患者均利用科室自制的心脏康复手册,由康复护士针对手册中的营养篇内容进行饮食健康教育,试验组患者在此基础上进行专人指导的食物交换份手测量饮食训练,出院时和出院2月后接受人体成分分析评估营养状况,6 min步行试验(6-minute walk test,6MWT)评估心肺功能,对比2组患者的干预效果。结果研究结束试验组患者去脂体重、蛋白质质量较干预前及对照组有明显升高,差异有统计学意义(P<0.05);体脂肪、体脂率、内脏脂肪面积较干预前及对照组明显降低,差异有统计学意义(P<0.05),对照组去脂体重、蛋白质质量有所升高,体脂肪、体脂率、内脏脂肪面积有所降低,但与干预前比较差异无统计学意义(P>0.05)。结论食物交换份手测量饮食教育能有效改善居家老年慢性心力衰竭患者的营养状况,并提高其心肺功能和运动耐力,可尝试用于老年慢性心力衰竭患者的出院健康指导。

第十四届全运会积分赛空手道男子组手运动员摔法技术研究

采用文献资料、录像分析、数理统计等方法,分别从摔法技术比赛特征、摔法技术运用特征两个方面对我国男子组手运动员摔法技术特征进行分析。研究得出:(1)摔法属于复杂的高难度组合技术动作,判罚严格,在比赛中主要出现接腿摔、扫腿摔、别腿摔、夹背摔。(2)组手运动员的摔法运用在总体进攻技术、比赛中具体摔法的运用、摔法运用形式、不同公斤级别运动员、不同比赛时间阶段、不同水平运动员、不同无效情况方面具有不同的特征。针对摔法运用不同特征,提出合理化攻防建议并制定相应攻防对策,为我国男子空手道运动员的摔法技术训练和技术创新提供有力的支撑,提高摔法技术在竞赛中的运用率以及得分率。