以诚信谋发展用服务建和谐

安徽八一纺织器材厂坐落在美丽的国家森林公园、国家风景名胜区天柱山麓.创建于1981年3月,从加工纺织用刷、络纱纸管等手工产品起步,逐渐滚动发展,不断积累壮大,从过去的粗加工产品发展到现在的高新技术产品,实现了质的飞跃,发展成为国内较大的纺织橡胶产品专业生产企业.主导产品有"潜阳"牌BYC系列棉纺牵伸用丁腈胶辊胶圈、罗拉轴承、并条芯轴等,以免处理胶管、微处理胶管、铝衬套胶管、高速并条胶管、花纹胶圈、纯化纤纺胶圈、高速导丝胶圈等高新技术产品为代表的优质产品群现已形成.各项经济指标逐年稳步上升,自1991年以来连续盈利15年,2005年实现销售收入超亿元,上缴利税近千万元,跃升为全国纺织机械器材行业50强骨干企业,先后荣获国家守合同重信用企业、安徽省明星企业、省扶贫工作先进集体、省先进企业、省重合同守信用先进单位、省文明单位、"AAA"资信企业、省高新技术企业、省诚信守法先进单位、省A级诚信纳税企业等荣誉称号.     

Free radical formation by Lactobacillus acidophilus NCFM is enhanced by antioxidants and decreased by catalase

Lactobacillus acidophilus NCFM was found to increase the production of transient radicals during growth in a 1:1 mixture of brain heart infusion broth and de Man–Rogosa–Sharpe broth as detected by electron spin resonance (ESR) spectroscopy using spin trapping. During growth of L. acidophilus NCFM addition of quercetin, rutin or a whey protein hydrolysate, normally all with antioxidant activity, further increased formation of transient radicals. Such increase in the level of radicals in the growth medium did not have an adverse effect on the viability of L. acidophilus NCFM, but may be involved in inhibition of pathogenic bacteria by L. acidophilus. Catalase decreased the production of radicals without effect on the growth of the catalase-negative L. acidophilus NCFM, whereas superoxide dismutase had no effect on radical production, but hampered bacterial growth. The effect of catalase may be explained by non-radical removal of hydrogen peroxide otherwise being a precursor for hydroxyl radicals formed by transition metal catalysis. Metal ion concentrations decreased in the medium during bacterial growth, which may be the result of transport across bacterial membranes of redox active metal ions like iron and copper chelated by the antioxidant competing with reductive cleavage of hydrogen peroxide forming hydroxyl radicals. Antioxidants may accordingly promote probiotic effect of catalase-negative bacteria through increased formation of reactive oxygen species.     

微生物对果饮料质量影响研究

在果汁加工链上,任意一道工序都可能造成果饮料原料一水果的腐坏.从原料水果的采摘到成品果汁的销售这一系列过程中,产品质量降低导致在激烈市场竞争中公司名誉下降的结果,使制造商损失惨重.     

CdTe量子点同步荧光法测定番茄中链霉素残留

采用水热法制备巯基乙酸修饰的CdTe量子点,基于链霉素对CdTe量子点同步荧光强度的增强效应,建立一种测定链霉素含量的同步荧光法,并对测定条件如缓冲溶液pH值、量子点浓度和反应时间进行优化。样品经甲醇超声提取后,加入含1.0mL CdTe量子点溶液(3.5×10~(-5) mol/L)和1.0mL Tris—HCl缓冲溶液(pH=6.0)的溶液中,室温反应10min后,测定反应体系在345nm处的同步荧光强度(Δλ=230nm)。结果表明,链霉素浓度在5.0×10-7~1.0×10~(-5) mol/L时与体系相对同步荧光强度存在良好的线性关系,相关系数为0.999 7,检出限为1.0×10~(-8) mol/L。该方法操作简单、快速、灵敏度高,可用于番茄样品中链霉素残留的测定。     

Iron Binding by Fiber is Influenced by Competing Minerals

Iron was bound by neutral (NDF) and acid (ADF) detergent fibers extracted from cooked pinto beans (Phaseolus vulgaris). Soluble iron (total iron minus bound iron) in the presence of NDF was increased from 13.11 ± 5.08 to 35.58 ± 9.20% and from 22.22 ± 164 to 29.98 ± 0.96% when 1.17 and 1.38 ppm (18.4 and 21.4 PM) of copper and zinc were added, respectively. In contrast, 0.93 μm (14.6 PM) of copper decreased the soluble iron from 61.02 ± 5.77 to 17.88 ± 4.5% in the presence of ADF. Neither magnesium or cobalt altered the amount of soluble iron in the presence of fiber. The change in soluble iron was directly proportional to the concentration of copper and zinc. The presence of two types of binding sites is proposed.     

食用油压榨法和浸出法工艺的区别

编者按:8种食用植物油国家新标准的修订,是近两年来国内外油脂行业及农业、食品、轻工、进出口贸易、海关等部门十分关注的一件大事,经过两年多的努力,8种食用植物油国家新标准现已全部颁布,国家质检总局和国家标准化管理委员会已于2004年分别颁布实施了大豆油、花生油、棉籽油、葵花籽油、玉米油、米糠油、茶籽油等新标准,菜籽油新标准也将于2005年2月1日起实施,这是我国油脂界的一件大事,对新标准的具体实施过程中各个方面还存有这样那样的一些疑虑和认识上的偏差.本期<中国油脂>杂志刊出了我国著名油脂专家丁福祺教授级高级工程师对新标准中有关食用油压榨法与浸出法工艺的界定,特别强调了能上市的成品食用油,不管是用哪种工艺生产的,只要达到了国家标准规定的指标,都是可以放心食用的.同时,我们还约请食用植物油国家新标准的主要起草者--国家粮食储备局西安油脂科学研究设计院检测中心副主任薛雅琳高级工程师就最新颁布的菜籽油国家新标准中的条文和相关指标进行了详尽解释和说明.     

Water Vapor Uptake by Fat-Free Apple Chips Decreased by Emulsifiers

The critical moisture sorption times of fat‐free apple chips varied from 29 min at 82% RH and 30 °C to over 24 h both at 34% RH, 20 °C and at 45% RH and 10 °C. Some emulsifiers added to the solution of carbohydrates used to treat apple slices before drying effectively decreased chip hygroscopicity. It was found that sodium stearoyl‐2‐lactate, sucrose esters, monoglycerides and their citric acid esters did not adversely affect flavor or texture of apple chips. During 3 h of exposure at 20 °C and 54% RH chips treated with these emulsifiers adsorbed from 14 to 25% less moisture than the untreated ones.     

超声辅助细胞转型的谷氨酸发酵工艺

为了进一步提高谷氨酸菌体细胞膜的通透性和谷氨酸产量,采用超声辅助谷氨酸发酵。通过单因素及正交实验研究,确定了最佳超声条件为超声时间50 s、振幅65%、间隔时间5 min,发酵起始,即开始超声处理至发酵8 h,结束超声。在最佳超声条件下进行谷氨酸发酵,菌体OD(600 nm)值为82. 5,提高13. 8%,谷氨酸产量为168 g/L,提高11. 3%,糖酸转化率为68. 2%,提高4. 3%,菌体转型时间由4 h提前至2 h。超声辅助谷氨酸发酵能够达到较好的效果,使发酵过程更加稳定。     

调整型内衣压力对人体生理指标的影响

为考察内衣压力对人体生理指标的影响,设计1组着装实验。15名青年女性作为受试者,穿着紧身衣于静止、运动10 min及运动后3种状态下,观察受试者心率,呼吸率,摄氧量,通气量,呼吸交换率,相对摄氧量等7个代表性生理指标的变化。结果发现,内衣的宽裕量和压力覆盖位置是影响生理指标变化的主要因素。通过对人体各受压点与各项生理指标的相关性分析得出二者之间存在相关性。静止时呼吸因子与腰部以上及胸部压力存在相关,静止时心率因子与各点压力基本不相关;运动时呼吸因子与前胸处受到的压力相关,运动时心率因子与前腰部压力相关。     

RSD还原纳米银整理真丝织物性能

以不同质量浓度的多氨基化合物(RSD)与硝酸银的混合溶液整理真丝织物,采用汽蒸法将银离子原位还原为纳米银,制备纳米银真丝织物,测试整理真丝织物的抗菌、染色、抗紫外和力学性能以及白度.结果表明:整理真丝织物具有良好的抗菌性能及抗紫外性能,活性染料兰纳素的染色性能得到较大提高,甚至可达无盐染色的效果,整理织物白度变化较小,力学性能略有下降.     

甘氨酸螯合钙的超声化学法合成

以甘氨酸(Gly)和氯化钙为原料,用超声化学法合成了甘氨酸钙螯合物。正交试验确定了最佳工艺条件:n(Gly)∶n(CaCl_2)=2∶1,无水乙醇20m L,在超声波辐射下反应6h,生成白色沉淀,产率94.3%。此法具有简便易行、高产率、高纯度、所用溶剂可回收利用等特点。并用IR(红外光谱)、TG-DTA(差热分析法-热重分析)、SEM(扫描电镜分析)对螯合物进行了表征。     

淼庐

位于云南丽江,被命名为"淼庐"的私人会所是李晓东继玉湖完小之后,与玉龙雪山这片风景名胜地的又一次"恋爱"。     

在“夹缝”中求生存

顾名思义,＂文件夹＂就是＂收纳文件的夹子＂,一种简单得不能再简单,但却是现代办公领域不可或缺的工具。文件夹产品发展到现在,已经成为了办公用品中的重要品类,     

超声波层压

超声波现在在纺织工业和非织造工业中正赢得越来越多的喝彩。在超声波的帮助下这一工艺具有很广阔的前景 :层压、粘合、刻花、切割和穿孔。超声波层压比起热粘合和热熔层压有许多优点 ,列举如下 :———不同材料的物质可熔接在一起 (非织造纺织品、纸和金属 ) ,至少有一层必须是聚合物或合成纤维成分。———罗拉温度不会升高过多。———在各刻花点之间没有熔化的纤维 ,这和热粘合层压方法正相反。层压保持了“纺织物”的手感。薄层织物保持了它们的平幅性质。———消除热熔粘合剂 ,这是普通热熔涂层都有的缺点 ,会延长干燥时间。1　超声…     

海贼王

众多运动品牌联名系列，PUMA by MIHARAYASUHIRO最具时装感，设计师巧妙地将运动元素包装成高端服饰。虽然本季PUMA by MIHARAYASUHIRO lookbook以航海为主题，但并不是直接走的渔夫或水手范儿，其新潮的设计可能令人更容易联想起海盗们的装束。     

用艺术去经营

随着“无用”唱响国际T台,世界时装舞台上刮起了强劲的“中国创造”风。同时,国内市场也渐渐开始青睐解构主义风格的服装。既要穿出特色又要穿出思想,已经成为潮流中人所崇尚与推举的。“例外”．“肃然”,“茶缸”等国内著名服装品牌的大卖．说明解构主义时装在中国具有相当的市场基础。这些看似另类的设计师品牌能得到如此高的关注与市场．是否能为我们打开新的思路呢？     

Greener by design

Process simulation models and other design tools allow engineers to design, simulate, and optimize chemical processes. However, there is a critical need to incorporate green engineering into the design of these processes. This calls for extending the breadth of the design process. This paper presents an integrated framework for greener design. The framework starts the decision-making as early as the chemical and material selection stage and also includes management and planning decisions. The design goal is not restricted to profitability, but environmental and ecological objectives are also added. However, this integration poses challenging problem of discrete and continuous decisions, nonlinear models, and uncertainties. Furthermore, there are multiple and conflicting objectives to be considered. Therefore, the core of this integrated framework is the efficient algorithmic framework for multiobjective optimization under uncertainty. Two real world case studies are presented that illustrate the promise of such a framework.