摘要：采用体式显微镜、优化设计软件研究了ENiCrMo3T0-4药芯焊丝中药芯组成及工艺参数对气孔敏感性的影响。结果表明:随着焊丝药芯组成中SiO_2/ZrO_2、TiO_2/ZrO_2、(TiO_2+ZrO_2+SiO_2)/MnO的减小,气孔敏感性降低;气体流量的改变对焊缝表面针眼气孔数的影响不大,但气体流量过小会产生条虫状气孔;当焊接电压25 V、焊接电流160 A、干伸长量20 mm时,焊缝金属针眼气孔数最少,焊丝气孔敏感性最低;增大固液相温度区间及氢在高温熔渣中的溶解度,可以降低焊缝金属气孔敏感性。

摘要：结局是整体艺术的一个重要环节,是作者思想的凝聚,是探索作家创作意图和衡量作家艺术功力的一个重要标志,一部好的文学作品总有一个精心设计的结局。在中国古代小说中,主人公常常依赖偶然的因素获得悲喜逆转的大团圆结局,鲁迅和张恨水对于小说结局的处理抛弃了这种大团圆模式,热衷于以悲剧收场。他们认为,作品应该扎根于真实的土壤之中,结局要符合人物性格和故事情节发展的客观逻辑,大团圆结局并不是真实的人生体验。而悲剧因为更能调动情绪所以更易震撼人心。虽然二人都摒弃了大团圆结局,但背后的思考却有殊异:鲁迅在对结局的思考中纳入了对于"瞒与骗"、喜好大团圆的国民性的批判以及个人"走"的生命哲学,而张恨水则更多的是从现实人生和读者的猎奇心理入手,从精妙的艺术情节的构思中对结局进行布局。无论如何,二人的艺术构思及对结局的处理都在无形中对读者造成了一定的影响。

摘要：百货店正成为零售和社交活动的“幸福目的地”。联想到“百货店”这个词汇，我们的眼前就浮现出举家同游的美好景象。早在50年前，在美国的各大城市，这曾经是司空见惯的情景。而现如今，大型零售设施的设计变革，文化与时尚的种种创新，都正在地球的另一端上演，特别是在韩国的首尔。

摘要：690 MPa级以上高强钢的发展和工程应用受限于缺乏与其强韧性相匹配的焊接材料,其根本原因是以针状铁素体为主的690 MPa级以下高强钢熔敷金属的强韧化理论已经不能指导新一代高强钢焊接熔敷金属的设计。因此,解决该问题的关键是寻求最佳的熔敷金属微观组织结构。综述了690 MPa级以上高强钢焊接熔敷金属中出现的联合贝氏体和其它各类微观组织对其强韧性的影响。其中,由不同形貌贝氏体相和针状铁素体相组成的复相分割结构可使焊接熔敷金属实现良好的强韧性匹配;然而,联合贝氏体作为下贝氏体的一种,其大尺寸的特点会显著降低高强钢焊接熔敷金属的强韧性;此外,可以通过物理冶金改善高强钢焊接熔敷金属的性能。

摘要：Autograft or metal implants are routinely used in skeletal ***,they fail to provide long-term clinical resolution,necessitating a functional biomimetic tissue engineering *** use of native human bone tissue for synthesizing a biomimeticmaterial inkfor three-dimensional(3D)bioprintingof skeletal tissueis anattractivestrategyfor ***,human bone extracellular matrix(bone-ECM)offers an exciting potential for the development of an appropriate microenvironment for human bone marrow stromal cells(HBMSCs)to proliferate and differentiate along the osteogenic *** this study,we engineered a novel material ink(LAB)by blending human bone-ECM(B)with nanoclay(L,Laponite®)and alginate(A)polymers using extrusion-based *** inclusion of the nanofiller and polymeric material increased the rheology,printability,and drug retention properties and,critically,the preservation of HBMSCs viability upon *** composite of human bone-ECM-based 3D constructs containing vascular endothelial growth factor(VEGF)enhanced vascularization after implantation in an ex vivo chick chorioallantoic membrane(CAM)*** inclusion of bone morphogenetic protein-2(BMP-2)with the HBMSCs further enhanced vascularization and mineralization after only seven *** study demonstrates the synergistic combination of nanoclay with biomimetic materials(alginate and bone-ECM)to support the formation of osteogenic tissue both in vitro and ex vivo and offers a promising novel 3D bioprinting approach to personalized skeletal tissue repair.

摘要：Type 1 diabetes is caused by insulin deficiency due to the loss of beta cells in the islets of *** severe cases,islet transplantation into the portal vein is ***,due to the loss of transplanted islets and the failure of islet function,the 5-year insulin independence rate of these patients is<50%.In this study,we developed a long-term,insulin-secreting,3 Dbioprinted construct implanted subcutaneously with the aim of preventing islet *** bioprinted construct was fabricated by the multi-layer bioprinting of beta-cell(mouse insulinoma-6:MIN-6)-encapsulated alginate bioink and poly(caprolactone)biodegradable polymer.A glucose response assay revealed that the bioprinted constructs proliferated and released insulin normally during the 4-week in vitro *** MIN-6 generated clusters with a diameter of 100-200μm,similar to the original pancreatic islets in the *** an in vivo study using type 1 diabetes mice,animals implanted with bioprinted constructs showed three times higher insulin secretion and controlled glucose levels at 8 weeks after *** the implanted,bioprinted constructs had a positive effect on insulin secretion in the experimental animals,the survival rate of the implanted group(75%)was three times higher than that of the non-implanted group(25%).The results suggest that the proposed,3 D-bioprinted,subcutaneous construct can be a better alternative to portal vein islet transplantation.

摘要：本文重新考量太平洋战争期间两代居美日裔之间的分歧,进而阐释他们各自对战时横遭监禁的感受。居美日侨第二代(Nisei)的活动分子为自己的囚禁申诉,力争平反补偿。他们既为居美第一代的父母(Issei)代言,又时常批评他们,揣测第一代甘于沉默和随之而来的一种政治寂静无为主义。日裔第二代作家,如山本久惠和约翰·冈田,在描写日裔囚禁经历的文学作品里针对第一代的威严塑造了种种令人不安的形象。然而,杰出的日裔艺术家小圃千浦在其战时创作的作品里展示出一种含意深邃的安慰,从环绕监禁营地四周的自然景观中汲取力量。本文通过重估小圃在这场政治危机期间的美学修炼和示范,来阐述滋生日裔第一代的韧性和第二代的沮丧、并使前者成了后者的政治负担的这段历史缘由。

摘要：A 1 kbit antifuse one time programmable(OTP) memory IP,which is one of the non-volatile memory IPs,was designed and used for power management integrated circuits(ICs).A conventional antifuse OTP cell using a single positive program voltage(VPP) has a problem when applying a higher voltage than the breakdown voltage of the thin gate oxides and at the same time,securing the reliability of medium voltage(VM) devices that are thick gate transistors.A new antifuse OTP cell using a dual program voltage was proposed to prevent the possibility for failures in a qualification test or the yield *** the newly proposed cell,a stable sensing is secured from the post-program resistances of several ten thousand ohms or below due to the voltage higher than the hard breakdown voltage applied to the terminals of the *** layout size of the designed 1 kbit antifuse OTP memory IP with Dongbu HiTek's 0.18 μm Bipolar-CMOS-DMOS(BCD) process is 567.9 μm×205.135 μm and the post-program resistance of an antifuse is predicted to be several ten thousand ohms.

摘要：A single poly EEPROM cell circuit sharing the deep N-well of a cell array was designed using the logic process. The proposed cell is written by the FN tunneling scheme and the cell size is 41.26 μm2, about 37% smaller than the conventional cell. Also, a small-area and low-power 512-bit EEPROM IP was designed using the proposed cells which was used for a 900 MHz passive UHF RFID tag chip. To secure the operation of the cell proposed with 3.3 V devices and the reliability of the used devices, an EEPROM core circuit and a DC-DC converter were proposed. Simulation results for the designed EEPROM IP based on the 0.18μm logic process show that the power consumptions in read mode, program mode and erase mode are 11.82, 25.15, and 24.08 ~tW, respectively, and the EEPROM size is 0.12 mm2.

摘要：Both mathematics and art consistently reflect the spirit of the age in which they arise. Consequently, the mathematics in China and in Korea during the Joseon Dynasty, in contrast to the deductive western mathematics, does not function on the basis of proving something deductively. Rather, the Chinese mathematics from this period was based upon making observations about problems by combining patterns with specific examples. In this paper, this author attempts to compare the differences in mathematics between the East and the West, and also to study the different perspectives in art between the East and the West, in order to identify the relationship between civilization, culture and the spirit of the age. This will explain the reason why the Western ＇One Point Perspective＇ had spread in China and the Chosen Dynasty, yet could not be permanently established in these countries.