Study on the automatic process of line heating for pillow shape plate

This paper focuses on the process for pillow shape plate by line heating technique, which is widely applied in the production of ship hull. Based on the analysis of primary parameters and experimental data in line heating process, the amount of local contraction generated by line heating has been illustrated. Then, combining with the computational result of local deformation determined by shell plate development, an optimization method for line heating parameters has been studied. This prediction system may provide rational arrangements of heating lines and technical parameters of process. By integrating the prediction system into the line heating robot for pillow shape plate, the automatic process of line heating for pillow shape plate can be achieved.

A pilot study, a specially designed pillow may prevent developmental plagiocephaly by reducing pressure from the infant head

Developmental plagiocephaly (DP) has been an increasing problem since the successful “back to sleep campaign”. The referrals for DP have increased by >400% during the years 2004 to 2008. Many infants spend less time in the prone position nowadays and some of the risk factors for DP are as follows: less than 3 times per day for the tummy time, torticollis and slow achievement of motor milestones. There is a need for better information to the parents but also for other strategies to prevent DP. The aim of this study was to investigate the effect of a special pillow and thus to reduce pressure on the infant head. Method: infants aged zero to two months were included in the study. They were randomized to either intervention group or control group. Head shape was investigated on two occasions, on the second occasion motor development, mobility and muscle function of the neck were also investigated. The parents were asked about tummy time and sleep position. All infants were investigated by the same physical therapist, blinded to group belonging. Result: seven infants had CVAI >3.5 on the last assessment, five of these had not used any method to reduce pressure. Fishers exact test showed a tendency where infants with reduced pressure on the head had less DP (P 0.08). Paired t test showed significant decrease in CVAI for the infants who had had reduced pressure on the head (P 0.01). Among these infants the CVAI was zero for 47% in the last assessment. For the infants who had not had a reduction of pressure on the head, there was no indication of a decrease of CVAI (P 0.45), and only 12% of these infants had a CVAI that was zero in the last assessment. Conclusion: this pilot study shows that a specially designed pillow may prevent DP in young infants. However, a larger sample is needed to confirm or disprove this. The study is planned to go on until there are 200 participants.

Sleeping on an Anti-Wrinkle Pillow Reduces Facial Wrinkles: Results from an Anatomical Study

Background: A special pillow was designed to redistribute mechanical stress during sleeping in order to slow down the formation of facial skin wrinkles. Objective: To investigate whether sleeping on a specially designed pillow reduces facial skin wrinkles. Participants and Methods: A 28-day pilot study was carried out in which fifteen healthy female volunteers aged 23 - 55 years (mean age 35. 6 ± 8.5) slept on an antiwrinkle pillow. Evaluation of facial wrinkles was conducted before commencing the study (T0), following at 14 days (T14), and at 28 days (T28) when the study ended. Wrinkle density was assessed by computerized analysis of 2D images of participants’ faces. Results: A statistically significant decrease in wrinkle density was detected while smiling around both eyes, around the right eye in a relaxed facial expression, on average in all observed facial areas, around the left periorbital area in participants who predominantly slept on their left side of the body, but not on the frontal area. Limitations: A 3D camera could be used to better visualize and analyze wrinkle density. Conclusions: Sleeping on the specially designed pillow reduces facial wrinkles.

Peperites Associated Pillow Lavas within Ophiolites and New Insight to Tectonic Setting: Comparative Study between Oman and West Junggar of China

Peperites are generated by magma intruding and mingling with wet unconsolidated or poorly consolidated sediments.Late Paleozoic peperites have been identified in the Darbut and Baijiantan ophiolitic belts at West Junggar,NW China.The peperites form successions up to 500 m thick interbedded with basaltic lava(sometimes pillow lava)and sedimentary rocks(i.e.limestones).The peperites are described and interpreted as resulting from basaltic lava bulldozed into wet,unconsolidated sediments at their basal contacts.The peperitebearing units are generally undeformed,occurring in continuous stratigraphic sections distributed regionally over a distance of 100 km on either side of the Darbut and Baijiantan ophiolitic belts,in contrast to the highly deformed slices of ophiolite.They demonstrate that the Darbut and Baijiantan ophiolitic belts should not be interpreted as significant plate boundaries and represent the underlying ocean crust uplifted along tectonic lineaments within a continuous shallow remnant ocean basin.Jordan et al.(2008)reported an occurrence of peperite in the Oman—United Arab Emirates(UAE)border region.In this border area the field relations of the pillow lavas surrounded by limestone with deformed bedding and peperite boundaries between the pillows and the limestone are consistent with the pillow lavas forming directly within carbonate sediments.The pillow lavas in Oman-UAE border area likely have formed as intrusions into water-saturated carbonate sediments deposited along the edges of seamounts.Based on the comparative study on the peperites associated pillow lavas within ophiolites between West Junggar and Oman,this paper proposes that the ophiolites with peperites associated pillow lavas surrounded by limestone were not formed in a typical ocean basin,but a shallow remnant ocean basin.

A Specially Designed Pillow Can Decrease Developmental Plagiocephaly in Young Infants

Developmental plagiocephaly (DP) has been an increasing problem since the successful “back to sleep campaign”. The referrals for DP have increased by more than 400% during the years 2004 to 2008. Many infants spend less time in the prone position nowadays and some of the risk factors for DP are: tummy time less than 3 times per day, torticollis and slow achievement of motor milestones. Improved information for the parents is needed but also other strategies to prevent DP. This study is a continuum of an earlier pilot study;the aim was to investigate the effect of a pillow, designed to reduce pressure on the infant head. Method: Infants aged zero to two months were included in the study. They were randomized to either intervention group or control group. Head shape was investigated on two occasions, on the second occasion motor development, mobility and muscle function of the neck were also investigated. The parents were asked about tummy time and sleep position. All infants were investigated by the same physical therapist, blinded to group belonging. Result: Fishers exact test showed that it was more common with decreased CVAI among infants in the intervention group (P 0.001). Paired t test showed significant decrease in CVAI for the intervention group (P 0.002), but not for the control group (P 0.96). Conclusion: This study shows that a specially designed pillow can decrease DP in young infants.

Geochronology and Petrogenesis of the Pillow Basalts in Western Karamay from West Junggar,NW China

Recently, we carried out the National Nature Science Foundation of China （No. 41303027） and focused on pillow basalts in western Karamay from West Junggar. The detailed geological survey at a scale of 1：500 distinguished an assemblage of accretionary complex in western Karamay. The accretionary complex consists of pillow basalt, mudstone, turbidite and abyssal radiolarian chert interlayered with tuff （Fig. 1a）. The great concern in the study area is the large-scale pillow lava.

Pillow飞片气炮加载实验的数值模拟研究

采用多介质弹塑性流体动力学计算方法,研制了适用于复杂加载的Lagrange计算程序MLEP,对劳伦斯利弗莫尔国家实验室(Lawrence Livermore National Laboratory,LLNL)19层和冲击波物理与爆轰物理国防科技重点实验室(Laboratory of Shock Wave andDetonation Physics,LSD)设计的29层Mg-Cu体系Pillow密度梯度飞片气炮加载实验过程进行了数值模拟和比较,获得的速度剖面计算结果与实验测试结果吻合一致,验证了流体动力学计算方法、不同材料体系混合模型以及计算程序的有效性和实用性,为进一步开展可控路径的复杂加载实验研究奠定了基础。

凉垫、凉枕降温性能检测方法研究

通过模拟实际使用环境,对降温凉垫、凉枕的降温性能进行了研究。结果表明:大多数凉垫、凉枕使用后最低温度在20~25℃之间。当降温时间大于2 h、平均温差>5℃时,可认为该凉垫、凉枕具有持续降温性能,凉垫、凉枕在炎热的夏季可以起到凉爽降温的作用。该检测方法可为相关生产企业控制产品质量提供参考。

Ti-Cu-W体系Pillow飞片加载铋熔化再凝固过程计算分析

采用数值计算设计了Ti-Cu-W材料体系Pillow飞片,实现金属铋样品的冲击加载和准等熵加载,并通过实验研究铋的冲击熔化再凝固这一复杂的物理过程,实验获得的速度波剖面结果与数值模拟结果基本一致。还建立了金属铋的包含5个固相和1个液相的完全物态方程,计算相图的三相点以及高压区的Hugoniot线与实验数据吻合较好,计算还获得了冲击加载再凝固实验中的温度信息和相变信息。通过计算分析和对实验数据的解读,认为Ti-Cu-W材料体系Pillow飞片加载可以用于铋的冲击熔化再凝固复杂物理过程研究,为实验探索研究建立了适用的研究方法和有效的技术手段。

Zircon U-Pb and geochemical analyses for leucocratic intrusive rocks in pillow lavas in the Danfeng Group,north Qinling Mountains,China

Field observation showed that there are many irregular leucocratic intrusive rocks in pillow lavas in the Danfeng Group in the Xiaowangjian area, north Qinling orogenic belt. Photomicrographs indicated that the protoliths of those altered leucocratic intr

Characteristics of the island-arc pillow lavas from southeast Yunnan Province, and its tectonic implications for Paleo-Tethys in South China

Based on the geological mapping, it is suggested that the pillow lavas exposed in Jianshui area in southeastern Yunnan Province are emplaced into the western part of Shizong-Mile faults, the boundary between the Yangtze and Cathaysian blocks, and mainly composed of tectonic massive of basalts and basaltic andsites. The geological and geochemical studies show that these lavas erupted in an island arc tectonic setting, which suggests that there existed the subduction of oceanic crust between the Yangtze and Cathaysian blocks. The paleontological fossils in the sedimentary interlayers between the volcanic rocks indicate that these pillow lavas erupted during Carboniferous-Permian. The geologic and geochemical evidence suggested that there existed an eastern branch of Paleo-Tethys between the Yangtze and Cathaysian blocks in southeastern Yunnan, South China.

基于三维点云处理的枕簧高度测量方法

轨道列车转向架的枕簧需要定期进行检修,枕簧高度是重要的检测项目。针对目前枕簧高度测量存在的效率低、精度差、不易实现自动化检测的问题,提出了一种基于三维点云处理的高效高精度测量枕簧高度的方法。通过快照式传感器获取枕簧端面的点云数据,对比常用的点云精简方法,采用体素下采样方法对采集的数据进行精简;结合直通滤波、半径滤波及统计滤波方法对枕簧端面数据进行降噪;最后利用RANSAC算法进行平面拟合,通过计算拟合平面之间的距离得到枕簧的高度。结果表明:与高度卡尺测量结果对比,利用该方法获得的枕簧高度测量误差小于0.3 mm,符合行业检修规程和检修工艺要求。

Pressure-induced instability and its coupled aeroelasticity of inflated pillow

A floating air weapon system(such as airborne floating mines)plays an important role in modern air defense operations.This paper focuses on aeroelastic characteristics of airborne floating mine named inflated pillow.Firstly,the dynamic deployable process of the pillow and characteristics of the local instability of the edge are studied,and the evolution mechanism of wrinkles and kinks is analyzed.Secondly,in the cruising stage,the fluid-structural-thermal coupling analysis is performed on the pillow,and the aeroelastic characteristics are studied.Thirdly,the shapepreserving effect of the inflated pillow during the“negative pressure”slow landing stage is evaluated.It is found that when the wind velocity is higher,the pillow has a collapsed instability(surface extrusion and contact),and when the wind velocity is lower,snap-through instability occurs.Finally,for the collapsed instability,a carbon fiber skeleton is added to discrete the large global collapsed fold into small local folds,thus achieving shape-preserving effect of pillow.For snapthrough instability,the critical internal pressure and different shape evolution under different wind velocity are evaluated.Through the analysis of the mechanical mechanism and control of the structural morphological evolution,it provides theoretical guidance for the application of the curved shell structure in floating air weapon system.

Crow and Yellow Pillow

楼先生有一个黄枕头。一只乌鸦想要这个黄枕头。但是楼先生靠在枕头上。 乌鸦敲了一下窗户。楼先生打开窗户。没有人!只见对面的乌鸦排成排!

枕头物语——PILLOW TALK比熊犬舍

在美国有一家非常知名的繁殖比熊的犬舍,犬舍的名字也很好听,叫"枕头物语"。PILLOW TALK的主理人Lort和Tracy Kornfeld在犬舍的自述中,写到了他们如何步入这个行业,如何对待这份事业,如何一路走到现在等等的点点滴滴,对于繁殖理念也有自己的理解。下面就是摘自PILLOW TALK犬舍主理人的自述。

Porcelain Pillow

This pillow, 7.3cm high, 13.1cm long and 8.1cm wide, was unearthed in Changsha in 1983. Its pedestal is a male lion lying prostrate with an open mouth. The surface is rectangular. The pillow was glazed in blue with brownish green dots. A poem on the surface written with brown ink reads, "Dressed in a red blouse and slik gauze skirt,

Fishing Child Porcelain Pillow

Cizhou Kiln was famed in ancient north China for itsexquisite porcelain.It first started in the middle of theSong Dynasty but fell into decay after the YuanDynasty(AD 1271-1368).The kiln had several sitesscattered in today’s Guantai and Pengcheng of

玲珑枕制作技艺信息可视化设计研究

玲珑枕作为我国优秀传统非物质文化遗产之一,历史悠久,具有特有的艺术呈现,其历史文化艺术特色理应传承与保护。文章首先从信息可视化进行阐述,并对玲珑枕概况进行论述,从而提出信息可视化设计与玲珑枕结合的意义,将玲珑枕进行相关信息系统整理归纳和分级,并基于玲珑枕信息可视化设计原则,对玲珑枕制作技艺等相关信息进行可视化设计。利用信息可视化设计对玲珑枕文化进行创新式呈现。为人们提供了更新颖、直接的视觉获取信息体验,扩大玲珑枕信息传播范围,也在一定程度上推动了玲珑枕文化的保护与传承。

运用多维视角融合视觉转换器的食品气调枕形包装漏气检测

食品气调枕形包装被广泛用于农产品的贮藏、运输和消费全流程,尽管工厂广泛使用的现代包装机械和人工检验手段减小了漏气风险,但是封口缺陷、贮藏和运输中的挤压、人工检验时的人为差错等造成漏气甚至瘪袋的情况时有发生,变质的袋内食品既影响了消费者身体健康又导致厂商声誉受损。该文针对食品气调枕形包装的漏气检测问题,提出了一种基于多维视角融合的Vision Transformer漏气检测方法(multi-dimentional fusion vision transformer,MdF-ViT)。通过包装袋的主视角、侧视角和俯视角的融合,提取3个视角包装袋轮廓特征,综合判断包装袋形变量,完成对枕形包装的漏气检测。对样本A、样本B、样本C的测试结果表明,该种模型准确率均达到97.5%,F1值分别达到97.6%、97.6%和97.4%。该研究提出的模型可以有效应用于工厂生产并节约成本。

巨厚膏盐岩形变机制解析及其对油气成藏的影响——以阿姆河右岸东部阿盖雷地区侏罗系为例

阿姆河右岸侏罗系钦莫利阶发育巨厚膏盐岩,其对油气富集成藏具有重要影响。综合利用钻井岩心测试资料和地震资料,通过剖面地质形态分析与地震分频属性刻画,对阿姆河右岸东部阿盖雷地区侏罗系与膏岩层相关的典型构造样式进行了识别,并解析了其形变机制,恢复了关键成藏期的古构造,探讨了不同时期构造运动对油气运聚成藏的控制作用。研究结果表明:①阿盖雷地区侏罗系上盐层上部及上覆地层发育滑脱褶皱,下部发育少量大型盐枕构造,中石膏—下盐层—下石膏层整体变形程度较低,下盐层内发育3种形态小型盐枕构造及盐缩颈,盐枕构造间可识别典型礁/丘滩体。②研究区构造挤压应力和重力滑脱作用是形成膏盐岩形变的主要动力,考虑“2期主要构造运动、先存地貌/构造、多层差异化变形塑性地层、纵横向复合叠加变形”4项关键因素建立了多层叠覆型复杂构造变形模式。③采用基于盐层流动增厚量回填的厚度图法恢复了研究区上盐层沉积前、早白垩世末生烃高峰期的古构造,综合生排烃史、构造发育史、气井产量,明确了基于膏盐岩形变恢复的古构造是天然气富集高产的重要因素,具有“天然气持续充注、多期动态成藏”的演化特征,古、今构造继承性发育区为天然气富集的最有利区。