Crystallization kinetics of amorphous Ga-Sb films extended for phase-change memory

Performance of phase-change materials based on Ga-Te-Sb was found getting better with decreasing Te content in our earlier studies. We concerned much properties of Te-free, Sb-rich binary Ga-Sb, which has been known to possess extremely fast crystallization behavior. Non-isothermal and isothermal crystallization kinetics of amorphous Sb-rich Ga-Sb films were explored by temperature dependent electrical resistance measurements. The crystallization temperature (183 to 261 degrees C) increases with decreasing Sb content (91 to 77 at%). The activation energy and rate-factor vary with Sb contents and reach the maximum at Ga19Sb81. The kinetic exponent is smaller than 1.5 at Sb < 85 at% denoting that the mechanism is one-dimensional crystal-growth from nuclei. The temperature corresponding to 10-year data-retention, evaluated from films, is 180 degrees C (Ga19Sb81) and 137 degrees C (Ga13Sb87), respectively. We verified memory performance using test-devices made of Ga16Sb84 working at voltages with 100 ns pulse-width.     

竹纤维针织物染整工艺

竹纤维是新型的再生纤维素纤维，具有优良的吸湿、透气和抗菌等性能。在大量的生产试验基础上，确定了竹纤维针织面料的前处理、染色及后整理工艺，以确保其产品保持竹纤维的天然特性，提高产品的档次和附加值。     

Classification of Honey from Its Bee Origin via Chemical Profiles and Mineral Content

Raw honeys from four different bee species, namely the honey bees and stingless bees, were classified based on its chemical profiles, mineral contents and heavy metals. Chemical profiles including proximate composition, predominant sugars, hydroxymethylfurfural content, and diastase activity were determined following official methods while mineral and heavy metals contents were obtained from atomic adsorption spectrometry (AAS) and inductively coupled plasma-mass spectrometry (ICP-MS) measurements, respectively. Both hierarchical cluster analysis and principal component analysis show high possibility of distinguishing honey by its bee species of honey bees (Apis spp.) and stingless bees (Heterotrigona itama) based on distinctive differences in chemical compositions and mineral contents. Potassium and sodium were the major elements in raw honey samples at average of 904.9 and 617.6 mg/kg, respectively. Honey from stingless bee contained more protein, 0.85 g/100 g and less total sugar of fructose and glucose at 24.99 g/100 g. The information of bee speciation origin of honey bees and stingless bees enhances the identity of honey on the product labelling.     

酶洗和砂洗结合处理苎麻织物

采用酸性纤维素酶并结合砂洗处理苎麻织物比单用酶处理工艺，苎麻织物性能改善更多，效果更好，适合作贴身衣服，本文给出了酶洗和砂洗结合处理的工艺参数，并对被处理织物作全面测试，分析了不同处理对织物性能指标的影响。     

生物铁-SMBR法处理印染废水

为提高膜生物反应器（SMBR）的处理效果,在一体式膜生物反应器中加入氢氧化铁絮体,将生物铁法与一体式膜生物反应器相结合,提出了生物铁SMBR法.利用生物铁-SMBR法处理模拟印染废水,并与PAC-SMBR及普通SMBR进行平行对比试验,结果表明,生物铁-SMBR法在提高处理效果方面具有明显优势.在其容积负荷比普通SMBR平均高25%的情况下,生物铁-SMBR法对COD、染料、NH3-N（氨-氮）的去除率分别高1.0%、9.5%、5.2%.与普通SMBR相比,PAC-SMBR也能够提高对印染废水的处理效果.在其容积负荷比后者平均高6%的情况下,对COD、染料、NH3-N的去除率分别比后者高0.6%、4.0%、5.3%.     

Physical Characterization of Wax/Oil Crystalline Networks

The objective of this research was to evaluate the physical properties of different types of wax/oil systems. Olive (OO), corn (CO), soybean (SBO), sunflower (SFO), safflower (SAFO), and canola (CAO) oils were mixed with sunflower oil wax (SFOW), paraffin wax (PW), and beeswax (BW) at different concentrations (1% to 10%). Results from this study show that the physical properties of wax/oil systems is affected not only by the concentration and type of wax used, but also by the type of oil used. In general, wax/oil systems formulated with SFOW generated crystalline networks with high enthalpies (1 to 22 J/g) and high G ′ values (2 to 6 × 10⁶ Pa) compared with the values obtained for BW and PW. SFOW crystalline networks were characterized by needle‐like crystals independently of the wax concentrations and type of oil used. BW crystalline networks, however, were characterized by different crystal morphologies (needle‐like or spherulites) depending on the wax concentration and type of oil used. PW samples were characterized by a crystalline network formed by needle‐ and platelet‐like crystals. Enthalpy values of BW and PW samples were similar (0.3 to 20 J/g), but BW samples resulted in significantly higher (P < 0.05) G ′ values in the 5% and 10% samples with values of 3.9 × 10⁶ and 6.1 × 10⁵ Pa for 10% BW and PW, respectively.     

纯棉织物的微波染色

研究了纯棉织物在微波辐照下的染色。文中既对微波染色与常规染色进行了比较,又对前者的机理进行了讨论。微波染色这一新工艺具有如下的优点:染色时间短、得色量高,还可以节约能量。通过X射线衍射、红外光谱、扫描电镜和X光电子能谱的测试和分析,发现经微波辐照后棉纤维的结晶度稍有减小,还形成一些自由基或活性羰基,并伴有形态的变化。     

聚乳酸纤维染整加工的进展

聚乳酸纤维(PLA纤维)是新一代环保型聚酯合成纤维，它给纺织工业开发新产品带来了新的发展机会，也给染整加工提出了新的挑战。了解聚乳酸纤维的基本性能和其染整加工的特性，对印染实际生产十分重要。本文综述了聚乳酸纤维前处理、染色、热定形，以及化学整理方面的新进展。     

纺织品上有机氯载体的检测方法研究

载体染色工艺是聚酯纤维纯纺及混纺产品常用的染色工艺，采用色谱分离、质谱定性检测和按色谱图定量的GC-MS分析技术可以检测23种含氯有机载体。本文从样品制备、仪器选用、测试步骤以及检测低限、回收率及精密度等方面作了详细的阐述。     

六味地黄汤抑制大鼠生精细胞凋亡及其促进精子发生

用醋酸棉酚建造大鼠生精障碍模型,用六味地黄汤灌胃治疗,以市售六味地黄丸和甲基睾酮分别为对照和阳性对照,TUNEL法检测实验各组大鼠睾丸生精细胞的凋亡情况,计数实验各组大鼠精子数量,考察实验各组大鼠精子的质量.结果表明,六味地黄汤各治疗组、阳性对照组大鼠的精子数量、精子爬高均与模型组有显著性差异(P<0.01),各治疗组大鼠的精子质量(活力)也显著优于模型组;各实验组大鼠睾丸凋亡的生精细胞明显少于模型组.由此显示,六味地黄汤复方可显著抑制大鼠睾丸生精细胞的凋亡,对生精障碍大鼠有显著的促进生精作用,并可显著提高大鼠精子的质量.