共查询到20条相似文献,搜索用时 78 毫秒
1.
我国染料、有机颜料2007年产量继续增长,但增速略有回落;染颜料出口量与效益稳定增长,进口平稳下降;分析了取消出口退税和染颜料加工贸易对行业的影响,并对未来发展趋势进行了预测. 相似文献
2.
3.
4.
2007年12月8日,第二届挪威海产中国厨师烹饪技术大赛决赛在北京市商务管理学校圆满举行.预赛胜出的来自北京、成都、沈阳、杭州的22名优秀厨师齐聚北京,参加了最后的角逐.本次比赛由挪威大使馆渔业处(挪威海产外贸局)主办,以挪威海产和北京奥运为主题,在保持挪威海产特点的基础上,将考验选手们的创新能力.本次比赛的评委由中国烹饪协会副会长孙应武大师担任裁判长,中国烹饪大师董振祥(大董)先生,中国烹饪大师、中央电视台《天天饮食》栏目厨艺顾问李铁钢先生担任裁判. 相似文献
5.
6.
现在互联网上流行一种时尚,非主流但影响力远远超过传统的网络媒体,这就是"博客",一种数字生活新时尚,通过文字、图片、声音、视频等尽情展示自我、分享感受、参与交流. 相似文献
7.
马永春,1968年参加工作至今在隆福寺小吃店工作,曾担任隆福寺小吃店厨师、厨师长、经理,现任北京隆福寺小吃有限责任公司行政总厨职务.先后培养白案生产技术人员数十名.曾多次代表隆福寺小吃店参加全国、北京市技能大赛荣获团体金牌、个人金牌. 相似文献
8.
9.
分析了ASIC器件在清纱器中的应用现状,给出了在数字清纱器上实现可编程器件改造的思路与方案.同时,提出了清纱器线路设计正经历着从专用ASIC、简单可编程ASIC器件到复杂可编程ASIC、模拟与数模混合型ASIC的应用转变的观念. 相似文献
10.
澳大利亚从事多种经营的工业集团-Schaffer公司最近宣布.在2002年~2003年的财政年度中.由于旗下的Howe制革厂生产的汽车革旺销.致使该公司利润攀升31%,达到1,100万美元.创历史最高纪录.并使得股价上扬5%。据透露,Schaffer公司计划在下个财政年度中将销量再提升7%,并打算在中国和东欧增设皮革下料厂,以便降低生产成本和对当地的市场需求作出快速反应。 相似文献
11.
通过回顾高校宝石及材料工艺学专业的创建历程,深入探讨了该专业未来发展所面临的、深层次的理论问题,即学科属性与文化背景,学科构成与知识内涵,学科方向与实践定位,学科任务与社会功能。在此基础上,建立了多层次技术教育的社会功能模型,由此推断:高校中的宝石及材料工艺学专业属于多层次技术教育中的高等职业技术教育。同时,还构建了该专业的技术教育的社会功能模型和学科构成模型,进一步确立了该专业的社会实践定位。 相似文献
12.
阐述棉纺牵伸胶辊、胶圈的应用技术和牵伸原理,重点探讨了胶辊、胶圈的牵伸工艺特性及其合理配置、胶辊制作、周期管理、质量管理、使用管理、产品缺陷与其机械波分析、纺纱环境和挡车工操作水平对纺纱性能的影响,提出胶辊、胶圈有关机件的质量要求等。 相似文献
13.
为了提高生条质量,减少盖板落棉,分析了锡林与回转盖板的梳理原理,对比了标准盖板与非标准盖板对条干、棉结杂质及锡林—盖板隔距与质量的关系,探讨了降低盖板总高误差及锡林—盖板隔距变化的方法。指出:锡林—盖板隔距增大使生条结杂增多、短绒率降低,当隔距增大0.025mm时生条质量恶化,增大0.051mm时生条严重恶化;锡林—盖板隔距和刺辊工艺优化组合,生条棉结降低25.6%,短绒率降低0.65%、棉结降低35.5%,条干CV值降低0.07个百分点;隔距的准确性、稳定性关系到质量与节棉的双重效益;减小盖板针布总高误差及隔距差异,有利于设备更好地发挥工艺特性,取得质量和节棉双赢。 相似文献
14.
中国三地软玉的矿物组成和成矿地质背景研究 总被引:1,自引:0,他引:1
为了查明新疆玛纳斯、青海格尔木、江苏溧阳产软玉的矿物组成和了解其品质与矿物组成的内在联系,为软玉的鉴别与质量评价等提供基础资料,采用偏光显微镜、电子探针、X射线粉末衍射等测试方法对3个产地的软玉样品进行了测试分析,从矿物成因特征、结构构造、矿物组成、化学成分等方面进行了对比分析.结果表明,新疆玛纳斯、青海格尔木、江苏溧阳的软玉虽然均由透闪石组成,但其晶体中Mg与Fe的离子数量明显不同,玛纳斯碧玉中的透闪石含有更多的Fe,其化学成分十分接近阳起石的;玛纳斯碧玉的成矿地质背景与格尔木和溧阳的有所差别,形成干蛇纹石化超镁铁岩中,富含FeOT和MgO,而溧阳和格尔木软玉则产于中酸性火成岩与白云质大理岩的接触带中,其FeOT的质量分数较低.软玉的颜色、韧性和透明度主要取决于其形成的地质背景条件. 相似文献
15.
赛络纺纱钢领、钢丝圈的选配实践 总被引:1,自引:1,他引:0
为了提高赛络纺纱成纱质量,减少细纱断头,从钢领、钢丝圈的种类,卷绕过程中对纺纱的影响及其运动配合等诸多因素出发,论述了钢领、钢丝圈的选配原则,重点阐述了赛络纺纱钢丝圈运动形态的变化及钢领、钢丝圈的选配要求,通过纯棉、非棉纤维纺纱的选配实践,指出赛络纺纱线毛羽少,结构紧密,应根据纺纱纤维性能和纺纱特点,以纱线通道通畅降毛羽、运行平稳少断头、散热良好延长使用寿命为原则对钢领、钢丝圈进行选配。 相似文献
16.
Gasser P Peno-Mazzarino L Lati E Djian B 《International journal of cosmetic science》2004,26(3):117-127
In a normal and healthy skin, the regular elimination of the superficial corneocytes, called desquamation, is a fundamental physiologic process intended to protect the barrier function of the skin. This invisible loss of corneocytes, individually or in small groups, is incessantly compensated by the divisions of the proliferative layer and the upward cellular maturation in order to maintain the harmonious renewal of the epidermis and the integrity of the stratum corneum. The harmony of this desquamation process is intimately conditioned by a sufficient hydration of the stratum corneum: (i) an abnormal desquamation leads to a disruption of the water barrier function and consequently to a dehydration tendency of the stratum corneum, and (ii) a cutaneous dryness (whatever the cause) is able to disturb the desquamation process. Protecting the water content of the stratum corneum has always been a major preoccupation of the cosmetic industry scientists. Consequently, the moisturizing properties of a cosmetic product are objectively measured by various explorations directly targeted on the hydration (corneometry) and on the level of the water barrier function (transepidermal water loss (TEWL) measurements), which depends directly on the skin hydration state. This intimate linkage of the desquamation process and the water content of the stratum corneum enable us to suggest an indirect assessment of the hydration from a direct study of the desquamation by examining a skin-stripping sample (D-Squames) by an optical microscope (linked to a computer). We will describe this already known technique and mainly its new and unpublished semiologic exploitation, named Diagnoskin, whose advantages are its simplicity and its reproducibility particularly interesting in the case of sequential appraisal of dermatologic or cosmetic treatments. 相似文献
17.
分析了梳棉机上分梳元件的作用机理,论述了锡林一道夫间纤维的转移过程及转移率的测定方法,说明影响道夫转移率的因素是锡林、道夫针布的种类、规格、齿型、隔距、锡林速度及产量等;指出梳棉机道夫机构存在的严重问题导致经锡林-盖板区梳理得到的平行伸直纤维状态被破坏而出现大量的各种弯钩纤维;为了解决道夫机构缺陷,以俄罗斯梳并联合机和中国台湾CC50型新道夫机构梳棉机为例,介绍其工作原理与优点,以供研发新型梳棉机参考。 相似文献
18.
在硫酸的催化作用下,甘蔗渣在聚乙二醇和甘油的混合溶剂中能被液化成生物质多元醇。向液化试剂中加入表面活性剂,利用表面活性剂提高液化试剂对甘蔗渣的渗透能力,改善甘蔗渣的液化效果。主要研究了表面活性剂种类和浓度、液化时间、液固比,液化试剂组成、催化剂浓度等对液化效果的影响。结果表明,吐温-80对甘蔗渣液化的效果最明显,并且在用量为0.25%时,液化效果最好,转化率达99%以上。液化得到的生物质多元醇的羟值为500—700mgKOH/g。红外光谱分析表明,液化产物中含有大量的可反应羟基,可以作为制备聚氨酯硬泡的多元醇组分。 相似文献
19.
20.
Manuela Zude Michael PflanzLorenzo Spinelli Carsten DoscheAlessandro Torricelli 《Journal of food engineering》2011,103(1):68-75
In high-value sweet cherry (Prunus avium), the red coloration - determined by the anthocyanins content - is correlated with the fruit ripeness stage and market value. Non-destructive spectroscopy has been introduced in practice and may be utilized as a tool to assess the fruit pigments in the supply chain processes. From the fruit spectrum in the visible (Vis) wavelength range, the pigment contents are analyzed separately at their specific absorbance wavelengths.A drawback of the method is the need for re-calibration due to varying optical properties of the fruit tissue. In order to correct for the scattering differences, most often the spectral intensity in the visible spectrum is normalized by wavelengths in the near infrared (NIR) range, or pre-processing methods are applied in multivariate calibrations.In the present study, the influence of the fruit scattering properties on the Vis/NIR fruit spectrum were corrected by the effective pathlength in the fruit tissue obtained from time-resolved readings of the distribution of time-of-flight (DTOF). Pigment analysis was carried out according to Lambert-Beer law, considering fruit spectral intensities, effective pathlength, and refractive index. Results were compared to commonly applied linear color and multivariate partial least squares (PLS) regression analysis. The approaches were validated on fruits at different ripeness stages, providing variation in the scattering coefficient and refractive index exceeding the calibration sample set.In the validation, the measuring uncertainty of non-destructively analyzing fruits with Vis/NIR spectra by means of PLS or Lambert-Beer in comparison with combined application of Vis/NIR spectroscopy and DTOF measurements showed a dramatic bias reduction as well as enhanced coefficients of determination when using both, the spectral intensities and apparent information on the scattering influence by means of DTOF readings. Corrections for the refractive index did not render improved results. 相似文献