摘要：Prosthesis implantation and fat transplantation are common breast *** general,prosthesis implantation alone does not achieve a realistic enough appearance,and fat transplantation alone is difficult to achieve in the correct *** date,no reports have focused on methods of combining fat with implanted prostheses for breast *** a newly designed bionic ink(i.e.,polyether F127 diacrylate(F127DA)&poly(ethylene glycol)diacrylate(PEGDA))and projection-based three-dimensional bioprinting(PBP),we report the development of a new method for printing porous *** was used to improve the printing precision of the prosthesis by increasing the gel point of F127DA and reducing the impact of external *** compression modulus of the printed prosthesis was very close to that of prostheses currently used in clinical practice and to that of natural ***,stromal vascular fraction gel(SVF-gel),a human fat extract,was injected into the pores of the synthesized prostheses to prepare a prosthesis mixed with adipose *** were implanted subcutaneously in nude mice to observe their biological *** 14 and 28 days of observation,the prosthesis showed good biocompatibility,and adipose tissues grew well in and around the *** result shows that a porous prosthesis containing pre-placed adipose tissues is a promising breast reconstruction material.

摘要：Paper-based microchips have different advantages,such as better biocompatibility,simple production,and easy handling,making them promising candidates for clinical diagnosis and other *** study describes amethod developed to fabricate modular three-dimensional(3D)paper-based microfluidic chips based on projection-based 3D printing(PBP)technology.A series of two-dimensional(2D)paper-based microfluidic modules was designed and *** evaluating the effect of exposure time on the accuracy of the flow channel,the resolution of this channel was experimentally ***,several 3D paper-based microfluidic chips were assembled based on the 2D ones using different methods,with good channel ***-based 2D and hydrogel-based 3D cell culture systems based on 3D paper-based microfluidic chips were verified to be ***,by combining extrusion 3D bioprinting technology and the proposed 3D paper-based microfluidic chips,multiorgan microfluidic chips were established by directly printing 3D hydrogel structures on 3D paperbased microfluidic chips,confirming that the prepared modular 3D paper-based microfluidic chip is potentially applicable in various biomedical applications.

摘要：目的:研发一种新型氧化锌薄膜体声波滤波器,建模进行理论分析,并给出设计工具。创新点:提出一种氧化锌薄膜体声波滤波器的新结构。方法:用Tiersten-Stevens方程进行理论分析与计算;方程及其求解和计算简单易行。结论:具有环形-圆形电极的氧化锌薄膜可以作为体声波滤波器。圆形和环形电极具有简单和易加工等优点,并且工作模态的振动分布与材料的对称性高度一致,避免了矩形电极角点引起的电场集中等缺点。该滤波器的最优工作状态需要通过精密设计实现,本文提供了理论和计算设计工具。

摘要：生活在中国最北疆的鄂伦春族有自己的语言但无文字,因此记录民族文化的方式长期以来沉淀于图像、歌曲、舞蹈等艺术形式中,其中留存至今的图像艺术多以“铰花”的形式存在。鄂伦春“铰花”代表性符号是“尚喔塔哈留汗”。“塔哈留汗”(tua.xə.***)即漩涡状曲线,原意指在每年三月份乌鸡求偶交配的季节,乌鸡会集中在有草和小树的大平地一只挨一只转成一个大圈,人们见此就说乌鸡“塔哈留汗”了。“尚喔”(?a.?ur)即波浪线,原意是指在无风的情况下烟慢慢地冒上天空形成云卷。经田野调查发现,这两个纹样可以单独使用也可以组合使用,而这两个纹样与其他符号有规律地组合却承载着一个民族无文字书写的文化发展史。

摘要：叹苏武身困在沙漠苦海,眼睁睁君与臣就两下分开.想当年在朝中辛苦终载,朝朝待漏五更来.屡闻战报传边外,国家大事常萦怀.高堂老母夫妻们多恩爱,但愿得干戈平息免祸灾.

摘要：公众不仅是科技发展的受益者,也是科技发展的原动力。科学技术进步应获得公众的支持也应惠及公众。公众参与在科技活动的伦理治理中发挥着不可替代的作用。公众参与的概念随着实践和理论的进展动态发展,其内涵不断丰盈。对公众参与的概念、目的及其基准的动态分析可以为公众参与的机制提供支撑。今天的公众参与概念更强调公众的广泛性和代表性,以及参与的深度和参与形式的多样性。公众参与可以更好地实现科学的价值、尊重人的权益和保障社会的公正,公众参与已成为科技活动伦理治理的必要环节。广泛的公众参与有利于更好地实现科技向善的目标,保障科技活动中的分配公正、回报公正和程序公正。公众参与科技活动伦理治理应当包含目标的制定、代表的选择、公众参与活动形式的设计,以及过程的公开透明。

摘要：高剂量率(High Dose Rate,HDR)近距离放射治疗在现代临床近距离放疗中得到广泛应用,临床实践依赖于^(192)Ir源的精确剂量学参数。由于不同放射源设计各异,各型号放射源需特定的剂量学参数。尽管国际上已针对^(192)Ir源进行了广泛研究,但针对原子高科股份有限公司生产的HDR ^(192)Ir源的国内研究较少。为了计算国产HDR ^(192)Ir源的剂量学参数,依据美国医学物理师协会(American Association of Physicists in Medicine,AAPM)TG43-U1推荐的剂量学参数计算方法,使用蒙特卡罗模拟软件建立^(192)Ir源的详细结构模型进行模拟计算。模拟结果显示:剂量率常数为1.105 cGy·h^(-1)·U^(-1),与文献值差异小于1.2%;单位活度空气比释动能率为9.788×10^(-8) U·Bq^(-1),差异为0.23%;径向剂量函数和各向异性函数结果与文献一致。结果表明,该模型对于国产HDR ^(192)Ir源的临床应用,具有一定的指导意义。

摘要：设计并搭建了自相似锁模超短脉冲光纤激光器和掺铒光纤放大器,在种子源部分,利用自制的碳纳米管可饱和吸收体结合色散管理的方式,控制腔内净色散为微正色散产生了自相似抛物线型锁模脉冲,并以此作为种子源进行后续的功率放大和光谱展宽。光纤放大级采用的是双向泵浦的方式,通过高增益低色散的掺铒光纤将种子光充分增益后,得到输出功率39.51 mW、光谱宽度38.11 nm、放大增益20.65 dB的激光输出。最后,采用普通单模光纤对放大后的自相似锁模脉冲进行压缩,获得压缩后脉冲宽度283 fs的超短脉冲激光输出。

摘要：We investigate thermodynamics of the (2+1)-dimensional AdS black hole in grand canonical ensemble. In the York's formalism, the black hole is enclosed in a "box" with a finite radius and the boundary temperature, radius and potential are fixed in the grand canonical ensemble. We investigate the thermodynamical properties such as action,entropy, temperature, etc. We only find the stable solution for (2+1)-dimensional AdS black hole and do not find the instanton with the negative heat capacity.

摘要：我国动漫产业承接了国际产业转移,但多数动漫企业还处于动画加工低端环节。值得高度关注的问题是,那些具有创新精神和高度创造力、具有真正优秀的原创动漫产品的企业却无法正常盈利。因此,建园区、盖大楼只提供了发展动漫产业的基础设施,关键是当地提供良好的创业环境,促使各类相关企业繁衍和互动,形成动漫产业集群的发展环境。文章借用企业理论中的互补性资产概念,总结了美国好莱坞和日本秋叶原两种动漫盈利模式特点;并结合2001年产于深圳的动画电影《魔比斯环》失败案例和2006年建立于深圳的国家级怡景动漫产业基地的发展,分析了深圳动漫产业存在的问题以及发展动漫产业集群的经验。提出发展动漫产业须培育本地企业的互补性资产,尤其是外部的互补性资产,培育动漫产业集群,实现在全球价值链上升级。