机箱接线座多工位级进模设计

分析了冲件的结构特点与成形工艺,设计了级进模排样方案,介绍了一种利用自动送料初定位,导正钉精定位,导料浮料销导料,连续进行零件轮廓冲切、弯曲等多个工位,最终将成品切离坯料的多工位级进模具的设计。     

Synthesis of barium mercaptides and application of antimony/barium mercaptides

1　ＩＮＴＲＯＤＵＣＴＩＯＮＡｎｔｉｍｏｎｙｍｅｒｃａｐｔｉｄｅｓ[1～ 4 ] ｕｓｅｄａｓｈｅａｔｓｔａｂｉｌｉｚ ｅｒｉｓａｔｔｒａｃｔｉｖｅｎｏｔｏｎｌｙｆｏｒｉｔｓｒｅｌａｔｉｖｅｌｙｌｏｗｃｏｓｔ ,ｂｕｔａｌｓｏｆｏｒｉｔｓｓｉｍｉｌａｒｓｔａｂｉｌｉｚｉｎｇｅｆｆｅｃｔｃｏｍｐａｒｅｄｗｉｔｈｔｈａｔｏｆｔｈｅｍｏｓｔｅｘｃｅｌｌｅｎｔｏｎｅ ｏｒｇａｎｏｔｉｎ .Ｂｙｍａｋｉｎｇｆｕｌｌｕｓｅｏｆｔｈｅｐｌｅｎｔｉｆｕｌａｎｔｉｍｏｎｙｒｅｓｏｕｒｃｅ ,ｄｅｖｅｌｏｐｉｎｇａｎｔｉｍｏｎｙｍ…     

Theoretical analysis of long-lived radioactive waste in pressurized water reactor

Background The accelerator-driven subcritical transmuta-tion system(ADS)is an advanced technology for the harmless disposal of nuclear waste.A theoretical analy...     

一种新的TOC含量拟合方法研究与应用

由于取样的限制,通常在烃源岩评价中往往只能获得十分有限的实测烃源岩的TOC含量数据。但随着我国多数盆地精细勘探的深入,需要更加精细的烃源岩评价,因此,人们对测井数据拟合烃源岩的TOC含量变化越来越重视。目前该技术最先进的是人工神经网络拟合方法,但多种神经网络在拟合高成熟度碳酸盐岩烃源岩地层的TOC含量时相关性均不够高。针对研究区内烃源岩的特点,尝试了一种用图版分类-模糊排队-BP神经网络联合拟合TOC含量的新方法。利用该方法对鄂尔多斯盆地马家沟组的测井资料和实测总有机碳资料进行数据处理,将结果与ΔlogR方法、模糊神经网络方法的结果相比较,证实该方法的结果与实测值有更好的相关性,为系统了解鄂尔多斯盆地下古生界烃源岩发育提供了一定的科学依据。     

P(MMA-AN)/TiO2复合粒子的制备及光催化性能

采用原位乳液聚合方法制备了基于共价键结合的P(MMA-AN)/TiO2复合粒子,红外光谱和热失重分析结果表明P(MMA-AN)在TiO2表面接枝率为15.9%。以甲基橙溶液为目标污染物,研究了P(MMA-AN)/TiO2复合粒子和TiO2对甲基橙的吸附和光催化降解甲基橙溶液的性能,结果表明:两种粒子对甲基橙的吸附都很少;在相同时间内,P(MMA-AN)/TiO2复合粒子对甲基橙溶液的降解性能优于TiO2,紫外光照180 min后,P(MMA-AN)/TiO2复合粒子对甲基橙溶液的降解率达到了88%,而TiO2仅为74%。     

Modulating lateral strain in GaN-based epitaxial layers by patterning sapphire substrates with aligned carbon nanotube films

A novel carbon nanotube-patterned sapphire substrate (CPSS) has been utilized for the growth of GaN material and fabrication of a InGaN/GaN light emitting diode (LED) by metal-organic vapor phase epitaxy. Different lateral strain distributions and stress reductions were observed in a GaN thin film on CPSS compared with those on a conventional sapphire substrate. Nanoheteroepitaxy induced by small size nucleation islands of about 50 nm is ascribed to this significant strain modulation. The crystalline quality of the GaN thin film was also improved, as illustrated by X-ray diffraction. Performances of 1 mm × 1 mm LEDs on CPSS were also enhanced, with an operational power increase of 37.5% and higher saturation current.      

大起大落重又崛起的APS

ＡＰＳ单反相机在１９９７年问世，ＡＰＳ表现出优良的画面质量，使得消费者在对它冷落一段时间之后不得不进行重新评价。另外，提出了ＡＰＳ在中国所遇到问题，如缺少冲扩店，胶卷价格贵等。     

Therapy for cerebral ischemic injury with erythropoietin-containing nanoparticles

In this study we prepared nanocarrier of erythropoietin (EPO) and the curative effect of the EPO-containing nanoparticles for periventricular leukomalacia (PVL) model was validated. It was demonstrated that EPO-containing nanoparticles can ameliorate drug-induced liquefaction caused by hypoxia. EPO-containing nanomedicine may open new therapeutic strategies in hypoxia cure.     

瓦斯抽放系统在排放密闭巷道瓦斯过程中的应用

瓦斯抽放的方法有本煤层抽放、邻近层抽放和采空区抽放。传统排放密闭内的瓦斯方法是控制风流排放法,但如何安全、可靠排放密闭巷道内瓦斯问题却有待探索。文章就如何对密闭巷道内的瓦斯进行抽排作浅显论述。     

Experimental study of enhanced oil recovery by CO2 huff-n-puff in shales and tight sandstones with fractures

The fractures and kerogen,which generally exist in the shale,are significant to the CO2 huff-n-puff in the shale reservoir.It is important to study the effects ...