摘要：Objective To understand the perceptions of pregnant Jordanian women who received antenatal care via mobile clinic,and to contribute new insights into the experiences of these mothers and how they evaluated the services that were *** Ten Jordanian mothers who had received antenatal care at a mobile clinic discussed their experiences in semi-structured,audiotaped interviews in a study that adopted a qualitative research *** analysis was done using interpretative phenomenological *** Three main themes were identified:Being informed about the medical campaign or missing the opportunity of being informed;The experience of receiving antenatal care was wonderful,although there was only one thing lacking;and they safeguard our life and take any opportunity to educate *** Data indicate that the mothers were largely satisfied with most facets of the antenatal care services they had received at the mobile ***,while services are generally well received,there are clear opportunities for ameliorating the quality of services *** mothers living in remote,deprived areas,outreach is not just an‘optional extra’but rather an essential service.

摘要：A methodology was proposed for the design of micropiles to increase earth slopes stability. An analytic model based on beam-column equation and an existing P y curve method was set up and used to find the shear capacity of the micropile. Then, a step-by-step design procedure for stabilization of earth slope with micropiles was introduced, involving six main steps: 1) Choosing a location for the micropiles within the existing slope; 2) Selecting micropile cross section; 3) Estimating length of micropile; 4) Evaluating shear capacity of micropiles; 5) Calculating spacing required to provide force to stabilize the slope; 6) Designing the concrete cap beam. The application of the method to an embankment landslide in Qinghai Province was described in detail. In the final design, three rows of micropiles were adopted as a group and a total of 126 micropiles with 0.23 m in diameter were used. The micropile length ranged between 15 and 18 m, with the spacing 1.5 m at in-row direction. The monitoring data indicate that slope movement has been effectively controlled as a result of the slope stabilization measure, which verifies the reasonability of the design method.

摘要：We investigate an optical compact triplexer based on two photonic crystal waveguides and resonant cavities. For performing wavelength selection, we use three core-shell rods as the resonant cavities. The core rods are created by introducing air holes in the center of the silicon rods. By varying the radii of the air holes, three specific wavelengths 1.31, 1.49 and 1.55μm can be obtained. This structure is designed and its performance is verified by the finite-difference time-domain method, which is highly suitable for photonic integrated circuits （PICs）. The average output transmission efficiency and quality factor are more than 98.85% and 560, respectively. The mean value of the crosstalk between output channels is about -36.49 dB. The present device is extremely compact with total size 96.24μm2, which is suitable for PICs and can be utilized in the fiber-to-the-home system.

摘要：折板因为结构简单而被广泛加工成吸能构件.输入动能恒定时,不同材料的折板在不同的动力学条件下。最终变形有明显的差异.为了更好地解释这种现象,利用Maple软件对Zhang-Yu吸能器方程编写了通用程序,并首次求得了吸能器的广义坐标(转角9)随时间的变化规律.为了更好地了解吸能器的运动受参数变化的影响,计算了吸能器动力学的相图经过大量数值模拟,我们发现四折板吸能器应当是"质量敏感"型吸能结构.同时,本文建立了低碳钢和6061-T6铝合金两类折板的动态屈曲的有限元模型,并与Caladine-English动态实验和Zhang-Yu刚黏塑性模型进行了比较.结果表明.(1)Zhang-Yu刚黏塑性模型对低碳钢这种应变本敏感型材料更具有指导意义,而折板为6061-T6铝合金这种应变率不敏感材料时误差更大.并且随着初始折角的增大.Zhang-Yu刚黏塑性模型的预测误差进一步扩大.(2)根据有限元模型修正塑性铰的等效塑性长度λ值,可以提高Zhang-Yu刚黏塑性模型的预测伯的精度,我们的研究结果对折板吸能结构的设计与制造有一定的指导意义.

摘要：Wounds heal through a complex process including four *** interruption or interference in healing process can prevent wound *** is one of the most common complications preventing wounds from *** this study,we investigated the fibroblast cell morphology and behavior of a gelatin-based hydrogel containing anthocyanin to determine whether it can be used for early detection of *** experimental results ascertained that 6 h after culturing the fibroblasts,they could be well attached to the surface of the hydrogel,and 48 h after seeding,they were spread over the surface and connected with each *** the addition of a low dose of anthocyanin,the vitality of the cell increased,and the results of the ATR-FTIR analysis showed that anthocyanin could eliminate remaining glutaraldehyde free *** also could change its color after the addition of bacterial ***,hydrogels containing black carrot anthocyanin may be a potential therapeutic and diagnostic strategy to promote wound healing and early detection of infection.

摘要：为辅助字体设计师提高计算机汉字字库开发效率,提出一种辅助字体设计的汉字字体生成算法,该算法可在小字体样本基础上生成风格相对一致的全字库字符图像.为了解决目前采用对抗生成网络(generative adversarial network,GAN)算法生成字体笔画黏连和结构错误问题,将笔画语义先验信息引入GAN模型,减少了笔画生成错误的问题;针对生成字体结构不完整与训练周期长的问题,在网络模型中增加了一种融合注意力机制的跳跃连接模块,利用该模块将编码器中特征投影到解码器,通过减少解码器的信息损失避免生成结构错误问题.采用公开的汉字字库数据集与pix2pix,zi2zi和DCFont算法进行对比实验,实验结果表明,文中算法能够生成更高质量的汉字字体,SSIM和损失函数均值均优于其他3种算法,最后给出算法的行业应用及适用范围.

摘要：A knock-down factor is commonly used to take into account the obvious decline of the buckling load in a cylindrical shell caused by the inevitable imperfections. In 1968, NASA guideline SP-8007 gave knock-down factors which rely on a lower-bound curve taken from experimental data. Recent research has indicated that the NASA knock-down factors are inclined to produce very conservative estimations for the buckling load of imperfect shells, due to the limitations of the computational power and the experimental skills available five decades ago. A novel knock-down factor is proposed composed of two parts for the metallic stiffened cylinders. A deterministic study is applied to achieve the first part of the knock-down factor considering the measured geometric imperfection, the other types of imperfections are considered in the second part using a stochastic analysis. A smeared model is used to achieve the implementation of the measured geometric imperfection for the stiffened cylinder. This new robust and less conservative design for the stiffened cylinders is validated by using test results.

摘要：考虑到废旧锂离子电池对环境、资源和全球可持续性发展存在严重的威胁和挑战,有必要开发出合适的回收技术实现废旧锂离子电池的回收和再利用.因此,我们提出了一种全新的绿色高效的直接回收方法,实现了废旧磷酸铁锂电池中正极LiFePO_(4)(LFP)和负极石墨的双重回收,并将其按不同比例复合设计了一种新型双离子电池(DIB)的复合正极材料(LiFePO_(4)/石墨,简写为LFPG).这种复合正极能够实现阴离子和阳离子的共同参与脱嵌,从而贡献更高的容量.结合LFP的高容量、高稳定性和石墨的高导电性、高电压性,这种复合正极表现出优异的电化学性能.在不同配比的复合材料中,LFP:graphite=3:1的复合材料在25mAg^(-1)的电流密度下展示出接近130 mAhg^(-1)的可逆容量,达到4.95 V的高电压平台,并表现出优异的循环性能(在100mAg^(-1)的电流密度下进行700次循环后仍具有良好的容量保持率),倍率性能相比回收的单一LiFePO_(4)也得到明显提升.通过电极动力学研究,揭示了Li^(+)和PF_(6)^(-)在复合正极中的特定扩散行为,进一步阐明了DIB的阴/阳离子分阶段嵌入/脱出的工作机理.本研究为废旧锂离子电池正极和负极材料的大规模回收提供了一种新的策略,并为利用废锂离子电池设计出性能优良的新型复合型锂离子电池正极材料提供了指导.

摘要：In order to study the failure process of an anchorage structure and the evolution law of the body’s deformation field,anchor push-out tests were carried out based on digital speckle correlation methods(DSCM).The stress distribution of the anchorage interface was investigated using the particle flow numerical simulation *** results indicate that there are three stages in the deformation and failure process of an anchorage structure:elastic bonding stage,a de-bonding stage and a failure *** stress distribution in the interface controls the stability of the *** the elastic bonding stage,the shear stress peak point of the interface is close to the loading end,and the displacement field gradually develops into a‘‘V’’*** the de-bonding stage,there is a shear stress plateau in the center of the anchorage section,and shear strain localization begins to form in the deformation *** the failure stage,the bonding of the interface fails rapidly and the shear stress peak point moves to the anchorage free *** anchorage structure moves integrally along the *** de-bonding stage is a research focus in the deformation and failure process of an anchorage structure,and plays an important guiding role in roadway support design and prediction of the stability of the surrounding rock.

摘要：Improving rollover and stability of the vehicles is the indispensable part of automotive research to prevent vehicle rollover and *** main objective of this work is to develop active control mechanism based on fuzzy logic controller(FLC) and linear quadratic regulator(LQR) for improving vehicle path following,roll and handling performances simultaneously.3-DOF vehicle model including yaw rate,lateral velocity(lateral dynamic) and roll angle(roll dynamic) were *** controller produces optimal moment to increase stability and roll margin of vehicle by receiving the steering angle as an input and vehicle variables as a feedback *** effectiveness of proposed controller and vehicle model were evaluated during fishhook and single lane-change *** results demonstrate that in both cases(FLC and LQR controllers) by reducing roll angle,lateral acceleration and side slip angles remain under 0.6g and 4° during maneuver,which ensures vehicle stability and handling ***,the sensitivity and robustness analysis of developed controller for varying longitudinal speeds were investigated.