资讯

中国陶瓷设计艺术大师名单（按姓氏笔画排序） 方文贤、王一君、王怀治、王采、王爱红、王绪远、冯林华、冯绍华、叶建新、关涛、刘少平、刘少倩、刘志钧、刘畅、刘鹏润、孙建兴、朱辉球、许国胜、邬书远、何炳钦、吴少雄、张肃、张金伟、李戈程、李廷怀、李竹玲、李伯书、李林、李新一、杨希文、杨英才、杨晓锋、汪洋、陈华、陈新华、周志远、周晓冰、岳振、易武、     

第十四届国际干燥学术会议（IDS 2004）简介

会议规模：共有48个国家和地区参加，有波兰、美国、巴西、法国、澳大利亚、加拿大、古巴、捷克、丹麦、芬兰、德国、希腊、匈牙利、印度、以色列、意大利、日本、挪威、罗马尼亚、俄罗斯、西班牙、瑞典、泰国、北爱尔兰、西印度群岛、南斯拉夫、乌克兰、白俄罗斯、智利、突尼斯、摩洛哥、苏丹等。     

营养组合物及在制备治疗再生障碍性贫血药物中的应用

正本发明公开一种营养组合物及在制备治疗再生障碍性贫血药物中的应用,是由赖氨酸、甲硫氨酸、苯丙氨酸、苏氨酸、色氨酸、精氨酸、组氨酸、甘氨酸、天冬氨酸、亮氨酸、异亮氨酸、缬氨酸、丝氨酸、谷氨酰胺、牛磺酸、乳清酸、核苷酸、维生素A、维生素D、维生素B_2、维生素B_6、维生素B_(12_、烟酸、叶酸、维生素C、铁、锌、锰、铜、硒、铬、钾、钙、镁、肌醇及大豆磷     

8月份30城市乘用车轮胎热销型号市场价格

注：按品牌中文首字母排序;30城市为：北京、上海、广州、深圳、杭州、成都、沈阳、西安、武汉、青岛、哈尔滨、合肥、呼和浩特、兰州、连云港、洛阳、南昌、南宁、攀枝花、秦皇岛、曲靖、厦门、太原、泰安、重庆、乌海、乌鲁木齐、泰州、大庆、运城     

上海市净水技术学会第五届理事会组成人员名单

经上海市科学技术协会1999年2月26日批复，同意上海市净水技术学会第五届理事会的组成人员，名单如下：（以姓氏笔划为序）丁南瑚、毛玉兰、王郁、李文俊、朱惠刚、吴今明、吴錞錞、宋伟民、宋显洪、陈宇奇、陈国光、陈春馨、陈景文、陆柱、陆晓峰、严霜、张凤英、张玉先、张祥余、张焕新、周来发、赵凤娟、项成林、郭常义、徐杨、夏彦熙、梁国明、程黎明、鲍士荣、杨文灿、周国光、龚宝生以上三十二位同志组成学会第五届理事会；丁南瑚、毛玉兰、吴今明、陈春馨、陈景文、陆晓峰、张玉先、赵凤娟、项成林、郭常义等十位同志为常务理事。吴…     

应用ICP-MS同时测定矿泉水中22种微量金属

研究结果表明应用ICP-MS可以同时测定饮用天然矿泉水中的Li、Be、B、Al、Ti、V、Cr、Mn、Co、Ni、Cu、Zn、Ge、As、Se、Sr、Mo、Ag、Cd、Sb、Ba、Pb、等微量金属元素.ICP-MS法具有快速、准确、处理简单、干扰少等优点.     

国内商情

今年化工市场预测偏紧品种铜、硫酸铜、浓硝酸、液氯、硝酸钠、亚硝酸钠、粗苯、纯苯、甲苯、混合二甲苯、间二甲苯、苯酐、甲醇、丁醇、辛醇、萘、丙酮、环已酮、已内酰胺、苯胺、甲酸、冰醋酸、丙酸、PE、PP、PS、EPS、对硝基氯化苯、对苯二甲酸、丙烯腈、N66盐、氯丁胶、丁腈胶、顺丁胶、三元乙丙胶、天然胶乳、椰子油、合成盐酸、硝基苯、片基涤纶树脂、增塑剂、尿素、硫酸钾。持平品种硫酸、氧化锌、无水芒硝、硫化碱、金红石型钛白粉、氰化钾、氧化铜、氧化亚铜、氯化亚铜、氰化亚     

我国使用的食品添加剂

一、着色剂 柠檬黄、日落黄、姜黄、β—胡罗卜素、红花黄素、胭脂红、甜菜红、苋菜红、辣椒红素、红粬米、靛蓝、叶绿素铜钠盐、酱色、虫胶色素; 二、发色剂 硝酸钠、亚硝酸钠、硫酸亚铁、VC、异VC、菸酰胺; 三、漂白剂 亚硫酸钠、亚硫酸氢钠、低亚硫酸     

湖南矿必兴科技有限公司

<正>矿兴磨矿业兴旺矿兴磨必不可少新型节能、环保高科技粉磨机矿兴磨应用范围矿兴磨广泛应用于建材、冶金、化工、矿山、能源、电力、耐火材料等行业中莫氏硬度8级以下,成品细度不高于-400目的各种物料的粉磨。如水泥(生、熟料)、石灰石、石灰、双飞粉、石膏、玻璃、砂岩、页岩、煤、焦碳、煤矸石、蛇纹石、矿渣、高炉渣、滑石、方解石、白云石、大理石、莹石、麦饭石、铁合金(硅铁、锰铁、铬铁等)、高岭土、凹凸棒土、钡盐、氧化铁红、明矾、钾盐、重晶石、铁矿、、铜矿、锰矿、镁矿、金属锰、硫磺、长石、石英、电石、烧结矿、铝钒土、磷矿石、钙镁磷肥、磷铵、尿素、偏硅酸钠、磷石膏、硫石膏、球团散矿等。     

第七届中国广州国际泵阀门管道与流体技术展览会

展出时间2013年8月21～23日展出地点中国进出口商品交易会展览馆展出内容水泵、化工泵、气动隔膜泵、计量泵、螺杆泵、离心泵、流程泵、油泵、污泵、排污泵、泥浆泵、渣浆泵、井泵、真空泵、磁力泵、压力泵、叶片式泵、容积式泵等;球阀、蝶阀、闸阀、柱塞阀、电磁阀、真空阀、电站阀、温控阀、疏水阀、排污阀、止回阀、截止阀、排气阀、密封阀等;节流阀、旋塞阀、隔膜阀、调压阀、     

Mechanisms Governing Anaphylaxis: Inflammatory Cells,Mediators, Endothelial Gap Junctions and Beyond

Anaphylaxis is a severe, acute, life-threatening multisystem allergic reaction resulting from the release of a plethora of mediators from mast cells culminating in serious respiratory, cardiovascular and mucocutaneous manifestations that can be fatal. Medications, foods, latex, exercise, hormones (progesterone), and clonal mast cell disorders may be responsible. More recently, novel syndromes such as delayed reactions to red meat and hereditary alpha tryptasemia have been described. Anaphylaxis manifests as sudden onset urticaria, pruritus, flushing, erythema, angioedema (lips, tongue, airways, periphery), myocardial dysfunction (hypovolemia, distributive or mixed shock and arrhythmias), rhinitis, wheezing and stridor. Vomiting, diarrhea, scrotal edema, uterine cramps, vaginal bleeding, urinary incontinence, dizziness, seizures, confusion, and syncope may occur. The traditional (or classical) pathway is mediated via T cells, Th2 cytokines (such as IL-4 and 5), B cell production of IgE and subsequent crosslinking of the high affinity IgE receptor (FcεRI) on mast cells and basophils by IgE-antigen complexes, culminating in mast cell and basophil degranulation. Degranulation results in the release of preformed mediators (histamine, heparin, tryptase, chymase, carboxypeptidase, cathepsin G and tumor necrosis factor alpha (TNF-α), and of de novo synthesized ones such as lipid mediators (cysteinyl leukotrienes), platelet activating factor (PAF), cytokines and growth factors such as vascular endothelial growth factor (VEGF). Of these, histamine, tryptase, cathepsin G, TNF-α, LTC₄, PAF and VEGF can increase vascular permeability. Recent data suggest that mast cell-derived histamine and PAF can activate nitric oxide production from endothelium and set into motion a signaling cascade that leads to dilatation of blood vessels and dysfunction of the endothelial barrier. The latter, characterized by the opening of adherens junctions, leads to increased capillary permeability and fluid extravasation. These changes contribute to airway edema, hypovolemia, and distributive shock, with potentially fatal consequences. In this review, besides mechanisms (endotypes) underlying IgE-mediated anaphylaxis, we also provide a brief overview of IgG-, complement-, contact system-, cytokine- and mast cell-mediated reactions that can result in phenotypes resembling IgE-mediated anaphylaxis. Such classifications can lead the way to precision medicine approaches to the management of this complex disease.     

Hydrocarbon components of the yellowheaded spruce sawfly sex pheromone

The primary sex pheromone of the yellowheaded spruce sawfly,Pikonema alaskensis (Rohwer) (Hymenoptera: Tenthredinidae), was found to include a series of straight-chain hydrocarbon dienes, all with the double bonds in the 9 and 19 positions and all with the (Z, Z) configuration. The major components, of 29, 31, 33, 35, and 37 carbon atoms, were synthesized. In the field and the greenhouse, the synthetic dienes were far above control levels in activity but, at least during the first hours of bioassay, were somewhat less active than the female-derived materials on a weight basis. In the field, a mixture of all five synthetic dienes, in the proportions found in the females, was more attractive than any single one, on a mole basis. In addition, (Z, Z)-9,19 dienes of 28, 30, 32, 34, 36, 38, and 39 carbons have been detected in females in minor amounts. The first five were bioassayed, and each was found to be similar in activity to the 35-carbon component when compared on a weight basis. The synthetic dienes, while active by themselves, were strongly synergized by two, more polar, Florisil fractions derived from females. Experimental design considerations are discussed.     

抗菌防腐剂（Ⅰ）—抗菌防腐剂的历史、定义与分类

简要回顾了抗菌防腐剂的发展历程,进一步明确了杀菌剂,抑菌剂,抗菌剂,防腐剂,防霉剂,消毒剂,杀生剂,保鲜剂,抗生素的概念。同时,结合抗菌防腐剂的发展在对抗菌防腐剂按无机物,有机物和天然物分类的基础上,进一步又按化学结构和官能团将抗菌剂分为有机金属,有机卤代物,醇,酚,醚,醛,酮,醌,酸,酯,含氮类,含硫类,有机磷,有机砷类以及杂环类等。     

典型过程强化技术在纳米材料制备中的应用进展

纳米材料被誉为21世纪的新材料,广泛应用于化工、电子、国防、陶瓷等领域.传统的纳米材料制备方法面临粒径控制较困难、批次间重复性差,存在放大效应等不足.过程强化技术是化学工程学科的研究前沿和热点方向之一,旨在通过在生产过程中采用新工艺、新设备等手段,实现缩减操作单元、减小设备体积、提高生产能力及能量利用效率的目的,是实现...     

Low-molecular weight organic compositions of acid waters from vegetable oil soapstocks

Alkaline extracts (soapstocks) from canola, corn, cottonseed, peanut, soybean, and sunflower oil refining were acidified, and identities and concentrations of the low-molecular weight organic components of the resulting acid waters were determined by gas chromatography, followed by mass spectroscopy, and by high-performance liquid chromatography. The main components of each acid water sample, in order of decreasing concentration and after omitting the fermentation product lactic acid, were phosphoric acid, α-glycerophosphate, and glycerol from canola;myo-inositol, phosphoric acid, α-glycerophosphate andmyo-inositol-1-phosphate from corn; glycerol, α-glycerophosphate,myo-inositol-1-phosphate, and β-glycerophosphate from cottonseed; phosphoric acid, glycerol, andmyo-inositol from peanut; α-glycerophospho-1-myo-inositol,myo-inositol-1-phosphate, α-glycerophosphate, and glycerol from soybean; and α-glycerophosphate, glycerol,myo-inositol-1-phosphate, and β-glycerophosphate from sunflower.     

Fruit and Vegetables Disinfection at SAMRO,Ltd. Using Hygienic Packaging by Means of Ozone and UV Radiation

At the SAMRO AG plant in Burgdorf, Switzerland, the Ventafresh technology has been adopted for cleaning, disinfecting, and storage of potatoes. Ventafresh technologies include washing raw potatoes with ozone-containing water, then treatment with UV radiation in a specially designed “disinfection tunnel”. Ozone wash water disinfects the potatoes while field detritus is removed. UV radiation continues the disinfection and simultaneously destroys remaining ozone. After being processed in the Ventafresh tunnel, cleansed and disinfected potatoes are stored in a clean warehouse at high humidity in an atmosphere containing a lower concentration of ozone. When ready for marketing, the stored potatoes are washed with ozone/water, dried and graded, then washed in another bath with ultrasound and UV radiation, washed again in ozone/water, passed through a tunnel while being exposed to UV radiation (185 and 254 nm), passed through a bath of electrolyzed water, through another UV tunnel, packaged in a nitrogen?+?CO₂ atmosphere, and distributed. The process is applicable to all root vegetables, plus root celery and asparagus, and also to certain fruits (apples, pears, kiwis, tomatoes, and Sharon fruits).     

面向健康产业应用需求的膜技术与膜材料

健康产业发展潜力巨大,其中,医药、医疗和保健行业占有重要地位,但其面临医药资源利用率低、生产工艺污染严重、高端产品依赖进口、质量标准体系不完善等制约因素。将膜分离技术应用于医药、医疗和保健行业,解决发展面临的诸多问题,对于推进我国健康产业发展将发挥重要作用。鉴于国内外尚无针对膜技术应用于健康产业进展的相关文献报道,本文针对面向健康产业应用的膜技术及膜材料进展进行了综述,探讨了健康产业应用对膜材料提出的要求及标准,重点研究了微滤、超滤、反渗透、纳滤、膜生物反应器、渗透汽化、气体分离、人工脏器等膜材料现状,分析了制约其发展的关键问题并提出相关建议,以期为相关部门及行业人员提供参考。     

Soil nutrient depletion by agricultural production in Southern Mali

The degree of soil mining by agricultural production in Southern Mali is assessed by calculating nutrient balances: differences between the amount of plant nutrients exported from the cultivated fields, and those added to the fields. Export processes include extraction by crops, losses due to leaching, to erosion, and to volatilization and denitrification. Inputs include applications of fertilizer and manure, restitution of crop residues, nitrogen fixation, atmospheric deposition of nutrients in rain and dust, and enrichment by weathering of soil minerals. Nutrient balances are calculated for N, P, K, Ca, and Mg. Both pessimistic and optimistic estimates are given.The resulting figures indicate, even when the most optimistic estimates are used, large deficits for nitrogen, potassium and magnesium. For the region as a whole, the calculated deficits are -25 kg N/ha,-20 kg K/ha, and -5 kg Mg/ha. Further, acidification is to be expected, in particular in areas where cotton is grown. The deficits are caused by traditional cereal crops, but also by cotton and especially by groundnut. The latter two crops are fertilized, but insufficiently. It is important to note, that the negative figures are not automatic recommendations for application of a specific amount of additional fertilizer. For phosphorus and calcium the balance of the region as a whole appears to be about in equilibrium, but locally large variations may occur.Erosion and denitrification are important causes of nutrient loss, accounting respectively for 17 and 22% of total nitrogen exports. Atmospheric deposition and weathering of minerals in the soil are still important nutrient inputs that contribute as much as nutrients as organic and mineral fertilizer combined. Nutrient depletion is very large in comparison to the amount of fertilizer applied. Drastic options, such as doubling the application of fertilizer or manure, or halving erosion losses, even if feasible, would still not be enough to make up for the calculated deficits.The annual value of withdrawn nutrients, if related to prices of fertilizers, varies between 10,000 and 15,000 FCFA/ha (40-60 US $/ha). Since the estimated average gross margin from farming in this area is 34,000 FCFA/ha (123 US $/ha), soil mining appears to provide an amount equal to 40% of farmers' total income from agricultural activities.     

从废旧高温合金的硫酸浸出渣中浸出分离钨钼铼

对废旧高温合金硫酸浸出残渣选择HCl-FeCl3-H2O2体系氧化浸出、浸出后加入NaOH调节溶液pH值,使钨、钼、铼与铌、钽等分离,研究了反应时间、反应温度、HCl用量、FeCl3用量、H2O2用量对钨、钼、铼浸出率的影响. 结果表明,该体系能充分浸出渣中钨、钼、铼3种金属,添加FeCl3可提高钼在盐酸溶液中的浸出率. 在浸出温度70℃、浸出时间5 h、FeCl3用量100 g/L、H2O2用量10 mL/g及HCl初始用量10 mL/g的条件下,钨、钼、铼浸出率分别大于97%, 86%, 91%.     

Comparative Study of Approaches based on the Taguchi and ANOVA for Optimising the Leaching of Copper–Cobalt Flotation Tailings

Approaches based on Taguchi and analysis of variance (ANOVA) methods have been proposed for studying the leaching of copper–cobalt flotation tailings. Taguchi method was used to determine the optimum leaching conditions as well the most influential operating parameters. ANOVA was used to determine the relationship between the experimental conditions and yield levels, as well as to define the significances of parameters on the leaching yields. An L₂₅(5⁵) orthogonal array experimental plan was used to assess the effects of initial acidity (25, 50 , 75, 100, and 125?g/L), leaching time (30, 60, 90, 120, and 150?min), temperature (25, 35, 45, 55, and 65°C), pulp density (S/L?=?10, 15, 20, 25, and 30 solid percent), and ferrous iron concentration (0.0, 1.0, 2.5, 5.0, and 7.5?g/L) on individual dissolution of Cu and Co. Under the optimum conditions (50?g/L, 60?min, 45°C, 15%, 2.5?g/L for Cu; and 100?g/L, 60?min, 65°C, 15% and 2.5?g/L for Co), leaching yields were 95.98% Cu and 97.74% Co. pH and Fe²⁺ were found to be key influential parameters of Cu and Co, respectively.