Preparation and physicochemical characteristics of an allicin nanoliposome and its release behavior

Allicin, the main active component derived from a traditional flavoring agent - garlic, exerts a variety of biological effects. Unfortunately, its high potential in food processing is limited by its sensibility towards heat and alkaline conditions and its pungent smell. In this research, allicin nanoliposomes were prepared using reverse-phase evaporation method in an attempt to circumvent these shortcomings. The process conditions were optimized by response surface methodology, and the optimal parameters obtained were: lecithin-allicin ratio 3.70:1, lecithin-cholesterol ratio 3.77:1, ultrasonic time 3.40 min, organic phase-aqueous phase ratio 3.02:1. The experimental maximum of entrapment efficiency was 75.20 ± 0.62%, which was consistent with the predictive value (75.05%). Various physicochemical characteristics of allicin liposomes were determined and evaluated. The mean size of allicin nanoliposomes with well-defined spherical shape was 145.27 ± 15.19 nm and only a negligible difference was found after 30 days of storage. The allicin nanoliposomes gave a zeta potential of −40.10 ± 0.96 mV. Based upon the in vitro release profiles, allicin nanoliposomes exhibited a sustained-releasing potential in addition to the release behavior followed the first-order equation. The results indicated that the encapsulation of allicin into liposomes proved to be a promising technology for more widespread application.     

近代江南地区民间大襟袄制作工艺

 本文针对近代江南地区民间大襟袄的制作工艺进行了研究分析。通过对江南地区民间服饰工艺传人的调研,对制作近代大襟袄的材料包括面料、里料、衬料、填充料、浆糊、缝线等;以及制作大襟袄的裁剪工艺流程裁衣身、裁接袖袖片、挖领子、开大襟、裁里襟、裁贴边、裁领子和裁扣子料和缝制工艺找袖缝、刮浆、缝合、裁里子、装填充物、做领子、钉一字扣和开衩处打套结,逐一进行了记录、复原、分析与研究,并部分做了详细的图示;江南地区人们独特的审美观和巧妙的制作工艺,充分的反映了当地人们对于服装的穿着舒适性的极高要求和工匠的聪明才智。     

基于VB的自动绘制立面图程序的设计

在建筑物采光分析测绘中,需提供大量建筑物的立面图,用于建模和后续采光分析。在以往的生产中,主要依靠在CAD平台下手工成图,生产效率低下,且容易出错。因此,开发一种自动绘制立面图的程序显得尤为迫切。本文以VB 6.0为开发环境,运用ActiveX Automation提供的接口进行AutoCAD的二次开发,重点阐述了利用VB控制Au-toCAD实现自动绘制立面图的思路和算法。投入运行两年来,极大地减轻了内业工作量,并有利于成果的标准化。     

Juice of New citrus hybrids (Citrus clementina Hort. ex Tan.×C. sinensis L. Osbeck) as a source of natural antioxidants

Fruit juices of pigmented and non-pigmented new citrus hybrids obtained by crossing clementine cv. Oroval with different cultivars of blood oranges were analysed to determine parameters related to fruit quality (total soluble solids titratable acidity, pH), and the content of ascorbic acid, total phenolics, flavanones, anthocyanins and phenolic acids. Antioxidant properties were evaluated by oxygen radical absorbance capacity (ORAC), and inhibition of induced linoleic acid peroxidation (InLAP) assays. The results of this study show that some hybrids with high antioxidant activity owing to considerable polyphenol content may be considered rich sources of phytochemicals. The OTA 9 hybrid was shown to be richest in polyphenols, suggesting that consumption of OTA 9 fruit or juice could be useful in health promotion and a disease-preventing diet. Moreover, the juice of this hybrid could be used as raw material to produce antioxidant ingredients for dietary, pharmaceutical, or cosmetic purposes.     

近代旗袍的造型变革以及裁剪技术

摘要：本文通过对江南大学民间服饰传习馆与上海艺风堂博物馆馆藏的传世旗袍的研究与分析,从早期旗袍的造型演变、近代旗袍的造型变革及裁剪技术的改良为切入点,描述由“繁”到“简”的装饰工艺,论述了由“平肩连袖”到“斜肩接袖”、由“无省”到“有省”的造型结构。指出了出近代旗袍是“融合中西”的经典之作。它成功地完成了从中式传统“平面造型”向西式“立体造型”的完美蜕变的同时,终结了“人适应衣”的时代,开创了“衣适应人”的新时代。     

Response-time simulation of multivariate point process models for multiprogrammed jobstreams

We consider simulation methods for particular marked multivariate point processes, calledR-processes, which have recently been proposed as models for multiprogrammed jobstreams. Using workload marks on events, such models facilitate the incorporation of realistic workload characteristics into computer system performance predictions. We consider R-processes in which workload marks for an individual jobstream form a stationary sequence of discrete random variables having a (generally non-Markovian) mixed moving average-autoregressive dependency structure. For such models we provide a method for obtaining from a single simulation run point and interval estimates for general characteristics of job response times.     

建立我国现代金融监管体系的法制思考

我国金融业市场化、国际化、电子化的发展已成必然，与此相适应，金融监管也必须加强。完善的现代金融监管体系是加强金融监管的基础和保障，该体系具有监管机构的统一性、监管手段的完备性、监管法制的协调性和监管理念的国际性等特征。建立我国的现代金融监管体系应该完善我国的金融监管法制。我国虽然制定了《人民银行法》等法律及一些相关的法规，但有些已经不能适应我国加入WTO及市场经济发展的需要，也不足以构成建立现代金融监管体系的法制基础。因而必须进一步修改、完善和制定相关金融法律法规，以构建我国的现代金融监管体系。     

Aroma profiles of five basil (Ocimum basilicum L.) cultivars grown under conventional and organic conditions

A headspace solid-phase microextraction (HS-SPME) method coupled to gas chromatography–ion trap mass spectrometry (GC–ITMS) has been developed and applied for profiling of volatile compounds released from five Ocimum basilicum L. cultivars grown under both organic and conventional conditions. Comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC×GC–TOFMS) was employed for confirmation of identity of volatiles extracted from the basil headspace by SPME.     

山鸡椒精油微胶囊大米保鲜剂的研制

以山鸡椒精油为芯材,海藻酸钠、壳聚糖为壁材,采用锐孔凝固浴法制备微胶囊,研究芯壁比、搅拌速率、壳聚糖添加比例对精油微囊化包埋率的影响,三因素对包埋率的影响次序为:壳聚糖添加比例芯壁比搅拌速率;确定最佳优化条件为壳聚糖添加比例2.0%芯壁比1:4,搅拌速率800 r/min。用淀粉包衣微胶囊的结果表明:室温下放置90 d,包衣处理微胶囊中精油的挥发率为60.4%,而未包衣的挥发率为9 6.7%。将大米置于30℃,相对湿度≥90%的环境下的储藏60 d:未添加山鸡椒精油微胶囊的大米脂肪酸值先上升后下降最后达到49.56 mgKOH/100 g样品,酸度值达到1.63 mgKOH/10 g样品,霉菌总数为7.1×10~5 cfu·g~(-1);添加山鸡椒精油微胶囊大米脂肪酸值为33.66 mgKOH/100 g样品,酸度值为1.35 mgKOH/10 g样品,霉菌总数为1.3×10~3 cfu·g~(-1)。     

黄河沙坡头水利枢纽导流明渠的消能布置

黄河沙坡头水利枢纽导流明渠下游的消能型式由物理模型试验所得，是一项在低佛氏数条件下的二级消能方法的成功实践。在明渠出口处采用二级消能方法，同时结合扩散消能措施，有效地解决了明渠水流的消能问题，使明渠水流与下游河道得以很好地衔接，同时，该方案也为工程节省了大量投资。