葫芦岛建材（卫浴）卖场分布图

1富都家具广场部分品牌介绍：卡丽卫浴、特地陶瓷、安华卫浴、toto卫济、姜加华卫浴、摩恩卫浴、东鹏陶瓷、欧派卫浴、奥斯曼卫浴、欧美陶瓷、罗马卫浴、维可陶卫浴、骏程陶瓷、大将军陶瓷、维可陶卫浴、威廉顿陶瓷、宾利陶瓷、银晶卫浴、露意莎、金舵陶瓷、法标卫浴、蒙娜丽莎卫浴、帝王洁具、好太太卫浴、狮王陶瓷、澳鑫卫浴、家瑞卫浴、依派隆卫浴、盛邦陶瓷、南希卫浴。     

葫芦岛市建材（卫浴）卖场分布图

1富都家具广场 卡丽卫浴、特地陶瓷、安华卫浴、toto卫浴、美加华卫浴、摩恩卫浴、东鹏陶瓷、欧派卫浴、奥斯曼卫浴、欧美陶瓷、罗马卫浴、维可陶卫浴、骏程陶瓷、大将军陶瓷、维可陶卫浴、威廉顿陶瓷、宾利陶瓷、银晶卫浴、、露意莎、金舵陶瓷、法标卫浴、     

1995—1996年国外塑料工业进展

收集了１９９５年７月到１９９６年６月国外塑料工业相关的期刊资料，介绍１９９５～１９９６年国外塑料工业进展。提供了美国、日本、德国、韩国、法国、荷兰、比利时、意大利等生产国及亚洲、西欧（包括全部欧洲联盟国家和奥地利、芬兰、挪威、瑞士和瑞典）、东欧、北美、中南美、非洲和大洋洲等地域的塑料材料产量，作为对比提供了中国台湾和外刊报导的中国塑料产量。按通用热塑性树脂（包括高密度聚乙烯、低密度聚乙烯、线型低密度聚乙烯、聚丙烯、聚苯乙烯、ＡＢＳ和聚氯乙烯）、工程塑料（包括尼龙、聚碳酸酯、热塑性聚酯、聚甲醛和改性ＰＰＯ／ＰＰＥ）、通用热固性树脂（包括酚醛、聚氨酯、不饱和聚酯和环氧树脂）、特种工程塑料（包括聚苯硫醚、液晶聚合物、聚醚砜、聚醚醚酮、和聚芳酯）、有机硅树脂、有机氟树脂、丙烯酸树脂和降解塑料的顺序，对塑料材料产量、消费量和合成工艺、产品应用开发、树脂品种延伸等技术进展作了详尽介绍。     

4月份27城市乘用车轮胎热销型号市场价格

按品牌中文首字母排序;27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     

北京市建材（卫浴）卖场分布图

北京建材经贸大厦卫浴品牌 TOTO卫浴洁具、OXO卫浴、凯乐玛洁具、极可意浴缸、当代龙头、意大利的Glass Design、VOLA卫浴、AGAPE卫浴、丰华卫浴、得而达、卡西奥、Esprit homes浴、威达（Vitra）卫浴、索格龙头（Supergrif）、汉斯格雅、高仪洁具、优浦JOOP!卫浴、雅卓、琥珀（Herbeau）、唯宝卫浴、科勒洁具、乐家卫浴     

节能减排，催化剂大有可为

据报道,全球18种重要的化学品[乙烯、丙烯、聚乙烯、聚丙烯、甲醇、乙二醇、环氧乙烷、氨、苯酚、对苯二甲酸、对二甲苯、氯乙烯、丙烯晴、己内酰胺、苯乙烯、环氧丙烷、BTX（苯、甲苯、二甲苯）和异丙苯]生产所需能源占化工行业能源需求的80％。     

浅谈化学品仓库火灾的扑救

化学品仓库集中存放着许多化工产品,这些产品性质复杂,多数有易爆、易燃、有毒、有腐蚀性的特点,扑救这类化学品的火灾是一项比较复杂的工作。如不能用水（包括水蒸气和含水的泡沫剂）扑救的化学品就有金属钠、钾、钙、镁、钍、铝粉、铝镁合金、氰化钠、硼氢化物、电石、磷化钙、发烟硫酸、氯磺酸、三氯化磷、五氯化二磷、无水氯化铝、过氧化钠、氯化硫酰、四氯化硅、五氨化锑、氯乙酰、苯基氯硅烷等忌水物质。     

胶粘剂新专利

胶粘剂和密封剂体系US 8404774 B2 2013-03-26本发明涉及的胶粘剂和密封剂体系的基础聚合物如下:不饱和聚酯树脂、环氧树脂、聚氨酯、硅烷封端聚合物、乙烯酯树脂、丙烯酸酯、聚醋酸乙烯酯、聚乙烯醇、聚乙烯醚、聚乙烯酯、乙烯酸乙烯酯、乙烯-丙烯酸共聚物、聚苯乙烯、聚氯乙烯、丁苯橡胶、氯苯橡胶、氰基橡胶、丁基橡胶、聚硫、聚     

传统手工艺的当代价值

自然界,为人类提供了生存、生活,以及进行创造的物质基础。人们在自然界的劳动实践中,获取了竹、木、柳、藤、草、棉、革、漆、土、玉、石、陶、瓷、金、银、铜、铁、锡等成为生活用品的材料。随着造物活动的扩大,人们也创造了与这些材质相适应的雕、镂、刻、削、染、缝、绘、髹、铸、琢、磨等工艺。     

杭州钱江干燥设备有限公司GPQ微型多功能干燥实验机

杭州钱江干燥设备有限公司是中国通用机械干燥设备行业协会副理事长单位和首批重点骨干企业、浙江省优秀科技型企业。是一家从事热力干燥技术开发、设备制造、销售、安装和技术咨询服务于一体的高新技术企业。公司成立二十多年来。已为化工、石化、精细化工、轻工、制药、食品、农副产品、矿产品、陶瓷、冶金、建材、木材、造纸、磁性材料等行业提供了近千套干燥设备。     

污泥生物炭中氮硫行为及环境效应研究进展

污泥生物炭中氮硫元素含量高,其氮硫行为和环境效应对全球气候变化的影响不容忽视。以往的研究中,研究者往往以富碳生物炭作为主要研究对象,关注碳对全球气候变化的行为和功效,而对氮硫元素的作用关注不够。本文从原始污泥基本性质到其热解过程,再到生物炭的老化,逐步对污泥生物炭整个生命周期内氮硫的行为及其环境效应研究进行综述,并对未来应注重开展的研究方向进行展望,为生物炭中氮硫元素固定、释放及与之关联的环境效应和温室气体排放控制研究提供理论基础。分析表明,污泥中氮元素含量普遍高于硫元素,且热解过程中氮比硫更容易转移至气相产物。氮硫元素随热解温度的增加,在三相产物中的分配都是炭中持续减少,油中先增后减,气中一直增加。高温（＞800℃）条件下,气相中的氮含量高于固相,而硫元素则仍然主要存在于固相中。污泥生物炭老化及其环境效应研究表明,污泥生物炭氮硫元素与土壤的相互作用及其温室效应问题在今后的研究中应引起重视。     

The Effects of Immunosuppressive Treatment during Pregnancy on the Levels of Potassium,Iron, Chromium,Zinc, Aluminum,Sodium and Molybdenum in Hard Tissues of Female Rats and Their Offspring

The ideal immunosuppressive regimen should provide for excellent immunosuppression with no side effects. Yet, current immunosuppressive therapy regimens commonly used in clinical applications fail to meet this criterion. One of the complications caused by immunosuppressive drugs is mineralization disorders in hard tissues. In this study, we evaluated the effects of three immunosuppressive therapies used after transplantation on the levels of potassium, iron, chromium, zinc, aluminum, sodium and molybdenum in the bones and teeth of female rats and their offspring. The study was conducted on 32 female Wistar rats, subjected to immunosuppressive regimens (cyclosporine A, mycophenolate mofetil and prednisone; tacrolimus, mycophenolate mofetil and prednisone; and cyclosporine A, everolimus and prednisone). The hard tissues of rats were analyzed using inductively coupled plasma optical emission spectrometry (ICP-OES, ICAP 7400 Duo, Thermo Scientific) equipped with a concentric nebulizer and a cyclonic spray chamber. All the immunosuppressive regimens included in the study affected the concentrations of the studied minerals in hard tissues of female rats and their offspring. The therapy based on cyclosporine A, everolimus and prednisone led to a decline in the levels of iron in bone, zinc in teeth, and molybdenum in the bone and teeth of mothers, while in the offspring, it caused a decline of bone potassium, with a decrease in iron and increase of molybdenum in teeth. Moreover, the regimen caused an increase in aluminum and chromium in the teeth and aluminum in the bones of the offspring, and consequently, it seems to be the therapy with the most negative impact on the mineral metabolism in hard tissues.     

Early Life Events and Maturation of the Dentate Gyrus: Implications for Neurons and Glial Cells

The dentate gyrus (DG), an important part of the hippocampus, plays a significant role in learning, memory, and emotional behavior. Factors potentially influencing normal development of neurons and glial cells in the DG during its maturation can exert long-lasting effects on brain functions. Early life stress may modify maturation of the DG and induce lifelong alterations in its structure and functioning, underlying brain pathologies in adults. In this paper, maturation of neurons and glial cells (microglia and astrocytes) and the effects of early life events on maturation processes in the DG have been comprehensively reviewed. Early postnatal interventions affecting the DG eventually result in an altered number of granule neurons in the DG, ectopic location of neurons and changes in adult neurogenesis. Adverse events in early life provoke proinflammatory changes in hippocampal glia at cellular and molecular levels immediately after stress exposure. Later, the cellular changes may disappear, though alterations in gene expression pattern persist. Additional stressful events later in life contribute to manifestation of glial changes and behavioral deficits. Alterations in the maturation of neuronal and glial cells induced by early life stress are interdependent and influence the development of neural nets, thus predisposing the brain to the development of cognitive and psychiatric disorders.     

High-Performance Polymers for Separation and Purification Processes: An Overview

Separation and purification techniques are applied in many important fields, such as in the medical, chemical, metallurgical, environmental, and pharmaceutical industries. Recent advances in separation science and the urgent need for highly selective purification have necessitated a rapid progress with respect to the reagents, chemicals, and surfactants used in separation processes to attain a high efficiency and selectivity. Polymeric materials have attracted considerable interest, and they have been widely used as extractants, catalysts, and modifiers, in separation and purification processes. This review outlines the recent advances in the use of novel polymers, natural and synthetic, in different separation and purification techniques. Various separation techniques such as chromatography, crystallization, precipitation, distillation, electrophoresis, filtration, and mineral processing methods are discussed, and the polymers used in each method are described in terms of their properties, structure, and function. The application of polymers shows great promise in achieving a highly efficient separation, especially in the areas of membrane separation and water purification. The rational design of new multifunctional polymers with triggered functions presumably presents new opportunities for the development of advanced separation methods.     

Lipid components of flax,perilla, and chia seeds

Composition of fatty acids, tocopherols, sterols, and TAGs in the lipids of flax, perilla, and chia seeds were investigated where lipid content was at 45, 40, and 35%, respectively. α‐Linolenic acid (ALA) dominated among fatty acids in all oils and accounted for 58.2, 60.9, and 59.8% in flax, perilla, and chia, correspondingly in these three oils trilinolenin was the main TAG found at 19.7, 22.6, and 21.3%. Triunsaturated TAGs accounted for 77.9, 77.5, and 74.5% of the total amounts in flax, perilla, and chia oils. Contents of tocopherol were at 747 in flax, 734 in perilla, and 446 mg/kg in chia seed lipids. γ‐Tocopherol was the dominating isomer contributing 72.7% in flax, 94.3% in perilla, and 94.4% in chia to the total amount of tocopherols. Flaxseed lipids contained 25.6% of plastochromanol‐8, derivative of γ‐tocotrienol with longer side chain; perilla and chia oils contained only 1.4% of it. Phytosterols were present at 4072, 4606, and 4132 mg/kg in those seeds, respectively. Among sterols, β‐sitosterol dominated and was found at 35.6, 73.3, and 49.8% of the total amounts of sterols in flax, perilla, and chia seed lipids. All of the investigated oilseeds have an excellent nutritional quality and can be a potential source of nutraceutical fats which can enrich diet in linolenic acid and other functional components.     

Effect of processing on flavor precursor amino acids and volatiles of sesame paste (tehina)

The content of flavor precursor free amino acids in dehulled sesame seeds, subjected to roasting (R), steaming (S), roasting plus steaming (RS) and microwaving (M), was determined and compared with those of the raw (RW) seeds. R, RS, and S had major effects in reducing the content of free amino acids from 2360 μg/g to 582, 795 and 884 μg/g, respectively; M had no effect on the content of free amino acids. Meanwhile, flavor volatiles of the raw and processed seeds were compared by means of a dynamic headspace analyzer/gas chromatograph-mass spectrometer. Volatiles of RW seeds contained 85 compounds, whereas under the analytical conditions employed, seeds subjected to R, RS, S, and M had 117, 97, 93 and 87 compounds, respectively. Among volatiles identified in the RW seeds were 36 hydrocarbons, 8 aldehydes, 4 ketones, 8 alcohols, 2 acids, 2 esters, and 1 pyrazine. The only pyrazine identified in the RW seeds was 2,5-dimethylpyrazine. Pyrazines, generally recognized as contributors to the roasted aroma of foods, were more numerous (10 in R, 6 in RS, 2 in S, and 2 in M) and prevalent (8.71% in R, 2.97% in RS, 2.04% in S, 0.53% in M, and 0.25% in RW) in the volatiles of processed sesame seeds. The chemical nature of pyrazines also depended on the process employed. Multivariant analysis indicated a highly negative correlation between the loss of free amino acids and production of volatile flavor compounds in the R and RS samples, while the M sample remained unchanged. Furthermore, both R and RS seeds contained dimethyl sulfide and dimethyl disulfide, whereas no sulfur-containing compounds were present in other samples. Of the processed seeds, the flavors of R and RS samples were considered as acceptable, and the flavor intensity of the former was deemed stronger than that of the latter by the experimenters.     

生物技术生产纤维素酶及其应用研究进展

简要介绍纤维素酶的酶学性质、降解机制、生产工程菌的选育、纤维素酶的应用情况,以及对纤维素酶生产与应用方面存在的问题和未来发展趋势进行了分析与探讨。纤维素酶在食品、酿造行业、农副产品深加工、饲料、医药、环境保护和化工等领域有着非常广阔的应用前景和应用潜力。我国纤维素酶的生产及应用研究近年来取得了很大进展,今后必将在应用深度和广度上进一步扩展。     

Ion-doped hydroxyapatite: An impasse or the road to follow?

Doping hydroxyapatite (HAp) with foreign ions has been increasing in popularity as a chemical approach to augment the existing and impart new properties to it. However, it is uncertain whether this approach can elicit properties strong enough to make HAp competitive for commercial applications in biomedicine and elsewhere. In particular, material properties, such as grain size, morphology, surface charge, porosity, topology and others may prove to be more effective in controlling properties of HAp than the dopant choice and concentration. This study tackles this question through a meta-analysis of the dependence of selected materials properties on dopant concentrations reported across the literature, showing that doping is a convenient way of controlling some, but not all properties in HAp and should be implemented ideally in combination with other structural and compositional factors of influence. This meta-analysis is coupled to a bibliographic analysis of the evolution of trends in terms of the type, frequency and concurrency of dopants in HAp, covering the entire Periodic Table, all 72 elements incorporated into HAp so far and the 1990 – 2019 period split into successive lustra. The study demonstrates a continuously ascending trend in popularity of certain elements, such as Sr, Ce and Se, and a continuously declining trend of others in the past two decades, including F, Y, I, Ti and most lanthanides. For the fourth period transition metals a trend of constancy was observed and for yet other elements, including Ag and Mg, a period of ascent was succeeded by a steady decline, the onset of which coincided in the case of Ag with the peak in the airing of the concerns over its cytotoxicity by the scientific community. Reasons for these trends with respect to most elements are explained and connected with trends governing broader realms of materials science. It is shown that the choice of ions as dopants in HAp is largely driven by broader trends in materials science, rendering the doped HAp a mirror to view these existing and past trends in. Theoretically, by following the historic progression of these trends, a gaze in this mirror could assist in extrapolation of future trends, which normally come at the cost extinguishing some of the existing ones. This immersion in more general developments in materials science opened the path toward drawing connections between the bibliographically assessed geopolitical trends in doped HAp and in broader aspects of the scientific community, including the growing gap between the rich and the poor pervading it. The analysis reported here is conceptually novel and could be applied to numerous other materials.     

食品接触材料中初级芳香胺的迁移风险与法规管控

汇总了国内外法规、标准、技术指南和文献中与食品接触材料相关的41种初级芳香胺(PAAs),分析了食品接触材料中PAAs的来源和迁移风险,对比了2021年以前中国、欧盟、韩国等国家及地区PAAs相关技术法规的差异.研究发现,食品接触材料中PAAs主要来源于偶氮着色剂、芳香族异氰酸酯以及其他助剂;聚酰胺餐厨具、有色塑料制品...