伦理道德与本能欲望的隐秘世界——《红玫瑰与白玫瑰》看张爱玲对人物形象塑造的情感把握

张爱玲的小说通常以对女性的生存悲剧的描写,给予读者强烈的视觉享受,同时又带给读者出乎意料的"痛感"。其作品把人物形象的传统道德与本能欲望的隐秘世界通过一举一动、一颦一笑的叙写,让读者有无尽的想象空间。本文以其代表作《红玫瑰与白玫瑰》为例,浅析张爱玲对人物形象塑造的情感把握。     

A low-complexity sensor fusion algorithm based on a fiber-optic gyroscope aided camera pose estimation system

Visual tracking, as a popular computer vision technique, has a wide range of applications, such as camera pose estimation. Conventional methods for it are mostly based on vision only, which are complex for image processing due to the use of only one sensor. This paper proposes a novel sensor fusion algorithm fusing the data from the camera and the fiber-optic gyroscope. In this system, the camera acquires images and detects the object directly at the beginning of each tracking stage; while the relative motion between the camera and the object measured by the fiber-optic gyroscope can track the object coordinate so that it can improve the effectiveness of visual tracking. Therefore, the sensor fusion algorithm presented based on the tracking system can overcome the drawbacks of the two sensors and take advantage of the sensor fusion to track the object accurately. In addition, the computational complexity of our proposed algorithm is obviously lower compared with the existing approaches(86% reducing for a 0.5 min visual tracking). Experiment results show that this visual tracking system reduces the tracking error by 6.15% comparing with the conventional vision-only tracking scheme(edge detection), and our proposed sensor fusion algorithm can achieve a long-term tracking with the help of bias drift suppression calibration.     

三维连续网络Ti2AlC/TiAl复合材料高温摩擦磨损行为研究

采用真空热压制备了三维连续网络Ti2AlC/TiAl复合材料,在明晰其高温氧化行为的基础上,利用摩擦磨损试验机对复合材料的高温氧化磨损行为及其机理进行了研究。结果表明,高温氧化条件下,复合材料表面在600℃以下生成Al2O3藓状氧化物,在800℃时生成TiO2聚集团以及TiO2和Al2O3的氧化物混合层;随着温度的升高,氧化膜的润滑作用使得摩擦系数降至0.3237,基材的软化与TiO2聚集团的突出生长使得磨损速率逐渐升至4.5×10-4mm3/(N.m),磨损机理由磨粒磨损转变为磨粒磨损与氧化磨损的混合磨损。     

PEA-15 磷酸化状态与卵巢上皮性癌预后的相关分析

目的:检测卵巢上皮性癌组织中pPEA-15-Ser104表达水平,探讨其临床意义及与卵巢上皮性癌预后的相关性。方法:选取2009年1月至2013年6月收住皖南医学院第一附属医院弋矶山医院妇产科手术治疗并经病理证实的95例原发卵巢上皮性癌,所有患者术前均未行化疗。免疫组化方法检测95例原发卵巢上皮性癌pPEA-15-Ser104的表达水平,卡方检验分析pPEA-15-Ser104表达水平在不同临床特征卵巢癌患者中差异并随访患者生存情况,采用Kaplan-Meier（K-M）方法分析不同临床特征卵巢上皮癌患者生存率差异,应用多因素Cox比例风险回归模型分析卵巢上皮性癌患者预后影响因素。结果:pPEA-15-Ser104的表达在不同组织学分级、手术病理分期、分型以及有无远处转移的卵巢上皮性癌组织中的表达比较差异均具有统计学意义（P<0.05）;而在年龄、肿瘤位置、肿瘤最大径、有无淋巴结转移比较中差异无统计学意义。K-M生存分析和Cox回归分析显示,pPEA-15-Ser104高表达的卵巢癌患者预后不良,生存时间短,pPEA-15-Ser104可作为卵巢癌不良预后的独立危险因素。结论:磷酸化状态的PEA-15在卵巢上皮性癌的发展过程中发挥重要作用,高表达者预后不良,可能成为预测卵巢癌患者预后的新靶标,有望为卵巢癌患者的治疗提供重要靶点。     

Mineral fertilizers with recycled manure boost crop yield and P balance in a long-term field trial

Nutrient Cycling in Agroecosystems - Crop uptake and neglecting to apply phosphate (P) fertilizer are important reasons for P deficit in the agro-ecosystem. Recycled manure from within the system...     

PTV-GC-MS/MS同时测定烟草中202种农药残留

研究了应用程序升温汽化进样-气相色谱-串联质谱(PTV-GC-MS/MS)技术检测烟草中202种农药品种221个组分的高效方法。以QuEChERS技术快速提取烟草中残留农药并净化,PTV进样后在TR-pesticide II毛细管柱上分离,通过优化串联质谱参数,有效降低复杂基质干扰及农药组分重叠峰的相互串扰,以保留时间窗口和特征SRM(选择性反应监测)离子对定性、峰面积定量。结果表明:①202种农药在0.01～2.50 mg/L范围内线性良好,相关系数为0.9800～0.9999,检测限0.0002～0.0100 mg/kg,加标回收率67.4%～112.0%,RSD 0.30%～20.30%。②应用该方法对44个进口烟叶样品进行检测验证,效果良好。③该方法对农药品种覆盖面广,前处理简便、快捷,节省溶剂;一次进样在46 min内可分析221个组分,准确、灵敏。     

拉伸取向控制对AZ31镁合金孪生和织构演化的影响

以室温单轴拉伸实验与晶体塑性有限元相结合的方法,通过拉伸取向控制,研究了AZ31镁合金拉伸变形过程中孪生行为、织构演化规律、塑性各向异性之间的关系。基于率相关晶体塑性本构理论,建立了滑移和孪生机制耦合的具有不同取向的晶体塑性本构模型,引入孪晶体积分数研究孪生对AZ31镁合金塑性变形过程中织构演变和力学性能的影响。结果表明,2种不同取向的样品在塑性变形过程中呈现出明显不同的织构演变规律,表现出明显的各向异性。轴向拉伸时孪生被抑制,孪晶激活体积分数低,径向拉伸时孪晶极易产生,孪晶激活体积分数高。轴向试样在整个塑性变形过程中{0001}极图偏移较小,径向试样因大量拉伸孪晶的开启,使得{0001}棱柱面织构的极密度逐渐向RD的正反方向发生明显偏移。     

Dandelion-Like Bi2S3/rGO hierarchical microspheres as high-performance anodes for potassium-ion and half/full sodium-ion batteries

Sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) have been considered as attractive alternatives for next-generation battery systems, which have promising application potential due to their earth abundance of potassium and sodium, high capacity and suitable working potential, however, the design and application of bi-functional high-performance anode still remain a great challenge up to date. Bismuth sulfide is suitable as anode owing to its unique laminar structure with relatively large interlayer distance to accommodate larger radius ions, high theoretical capacity and high volumetric capacity etc. In this study, dandelion-like Bi₂S₃/rGO hierarchical microspheres as anode material for PIBs displayed reversible capacity, and 206.91 mAh·g⁻¹ could be remained after 1,200 cycles at a current density of 100 mA·g⁻¹. When applied as anode materials for SIBs, 300 mAh·g⁻¹ could be retained after 300 cycles at 2 A·g⁻¹ and its initial Coulombic efficiency is as high as 97.43%. Even at high current density of 10 A·g⁻¹, 120.3 mAh·g⁻¹ could be preserved after 3,400 cycles. The Na₃V₂(PO₄)₃@rGO//Bi₂S₃/rGO sodium ion full cells were successfully assembled which displays stable performance after 60 cycles at 100 mA·g⁻¹. The above results demonstrate that Bi₂S₃/rGO has application potential as high performance bi-functional anode for PIBs and SIBs.

     

低温环境下电子式电流互感器激光供电情况的分析与研究

激光供电是有源型电子式电流互感器的关键器件之一,它的性能直接影响电子式互感器的性能。激光供电系统受环境条件影响较大,特别是低温下有可能使电子式互感器不能正常工作,该文介绍了激光供电系统在不同温度下的试验结果,根据实验结果采取的改善激光供电系统性能的温度补偿方法,并在实际工程中得到了应用。该文对有源式电子式互感器的设计人员和工程使用人员都有一定的参考价值。     

基于Mathews图解法的空场嗣后充填采场结构参数优化研究

阿舍勒铜矿采深逐渐接近1 000 m,深部矿岩破碎且采场应力增大,导致采场稳定性问题日益严重。为了确保阿舍勒铜矿深部采场稳定,保证回采作业安全,需要基于工程地质资料优化采场结构参数。本文通过现场调研,获取了地下典型矿岩的单轴抗压强度,测量了-100 m中段的地应力,并对地下矿岩进行了岩体质量分级,进而采用Mathews图解法,针对采场沿走向布置和垂直走向布置对顶板和边帮开展稳定性分析,基于工程地质资料合理选取了岩石应力系数、节理方位系数和重力调整系数等,得到Mathews稳定性系数和容许水力半径的相关关系,最终分析确定了保持采场稳定的最佳结构参数：当采场宽度小于24 m时,采场顶板总能保持稳定;采场垂直矿体走向布置且侧帮矿岩为黄铁矿时,采场长度须小于22.50 m,若侧帮为凝灰岩时,采场长度须小于12.50 m。相关结论可为阿舍勒铜矿采场结构参数优化提供依据,并能为国内同类矿山采场结构设计提供参考。