ZGD758型挠性剑杆织机纬向故障分析

对ZGD758型挠性剑杆织机纬向所产生故障的原因进行了分析，并提出了解决的方法，以指导实际生产，从而提高剑杆织机的产量和质量。     

G6300型剑杆织机引纬机构分析

通过MEC-B型机械动态参数测试仪,对G6300型剑杆织机引纬机构进行测试,并阐述该机构性能及有关特征数据,还分析讨论了送、接纬剑的动态曲线和工艺参数,该机的纬纱交接为对称交接。     

TT96型剑杆织机引纬系统的测试分析

通过MEC -B型机械动态参数测试仪 ,对剑杆织机引纬运动规律进行测试 ,用计算机处理有关数据绘制曲线 ,分析和讨论引纬系统的动态曲线及工艺参数     

SM93传剑机构和DA40找纬装置常见故障及排除方法

意大利Somet SM93剑杆织机是一种性能比较可靠的新型织机,引纬率高达1000m/min左右。如何管好用好这种性能先进、自动化控制程度较高的织机,使之发挥最大的经济效益,是当前的一个大课题。 SM93剑杆织机在高速运转过程中,不可避免地会出现各种各样故障。我厂经过三年多时间的实践,认识到能否正确地判断故障原因,采取有效的解决方法及时排除故障,     

GA747剑杆织机引纬机构调试体会

为了更加合理地调试GA747剑杆织机引纬机构，经过摸索与总结，给出了调试的具体步骤、操作方法，着重从调整纬纱枪测机构、选纬机构、剪切机构和传剑机构等四个方面指出了调试要点。     

剑杆织机电子引纬系统的开发与研制

指出了传统的剑杆织机机械式引纬机构的特点以及存在的不足,根据高端剑杆织机的引纬功能和要求,提出了一种新型的剑杆织机电子引纬方法。介绍了电子引纬的设计方案和设计过程,对该系统的机械结构、剑头运动规律和电控系统等的设计作了较具体的论述,对电子引纬系统的动态运动结果也做了说明和分析。     

无梭织机引纬张力峰与纬纱品质的关系

一、无梭织机引纬过程中纬纱的 张力峰值 当片梭、剑杆和喷气三种类型的无梭织机具有相同的入纬率时,在每次引纬过程中,纬纱的速度变化和纬纱的张力波动曲线分别如图1和图2所示。     

一种新颖的剑杆织机引纬方法

提出了一种新颖的剑杆织机电子引纬方法。该方法所采用的电子引纬机构可以极大地简化引纬装置的机械结构,减小引纬机构的运动惯量,满足不同纬纱对织机的各种适织要求,实现真正意义上的针对不同纬纱的引纬运动规律的优化和可选择化。     

片梭织机织造双纬织物的实践

片梭织机经改造后用于织造单经双纬织物，针对织造中存在的断纬多、织造效率低、疵点多的问题．通过检修片梭、调节引纬张力、保持通道光洁、消除油经疵点等措施，提高了织造效率和入库一等品率。     

喷气织机织造多纬提花织物的实践

为在喷气织机上顺利开发多纬提花织物,对生产工艺流程和技术措施进行了调整与优化.认为在浆料选择上要以高浓低粘、延伸性好的浆料为主,上浆以被覆增强为主,兼顾浸透.优选织造工艺,减轻织机和经纱所承受的负荷,适当加大经纱上机张力,提高梭口清晰度.从设备、工艺、原料等方面采取综合措施,解决了多纬提花织物易产生的堆积纬缩和扭结纬缩问题,织机效率由70%提高到85%,下机一等品率达到92%.     

Effects of changing housing on physiology of calves

Holstein bull calves were assigned to be reared in either a stall until 47 d of age, then moved to a hutch; a hutch until 47 d, then moved to a stall; or an elevated pen. Jugular blood samples were obtained at 42, 49, and 56 d of age. Two trials were run during the fall of successive years with 5 to 7 calves per treatment per trial. Stalls were .56 X 1.2 m with elevated wooden slotted floors. Pens were 1.2 X 1.5 m with elevated wooden slotted floors and were located in the same open front building as the stalls. Hutches were 1.2 X 1.2 X 2.4 m long, and calves were restrained with a collar and 2.4-m chain. Calves were placed on treatment between 12 to 24 h after parturition. A treatment by day interaction for triiodothyronine, thyroxine, and adrenocorticotrophic hormone-induced cortisol release indicated that conditions responsible for treatment effects were largely reversed 9 d after moving from stalls to hutches or hutches to stalls.     

3 种香型凤凰单丛茶挥发性成分分析

采用溶剂辅助风味蒸发法提取玉兰香、蜜兰香和桂花香3 种香型凤凰单丛茶的挥发性成分,运用气相色谱-质谱（gas chromatography-mass spectrometry,GC-MS）联用技术结合气相色谱-嗅辨（gas chromatography-olfactometry,GC-O）技术分析其香气组分。通过GC-MS在3?种单丛茶中共检测出91?种挥发性成分,共有成分38?种,各茶样均以醇类、酮类和碳氢化合物为主,但各香型间仍有明显差异。通过GC-O分析共嗅闻出31?种活性香气成分,鉴定出30?种,其主要香气类型表现为花香、甜香、清香、果香。芳樟醇氧化物I、橙花醇、芳樟醇氧化物II和橙花叔醇4?种成分在3?种单丛茶中相对含量丰富,嗅闻强度值高,且呈现出愉快的花香、花香甜香、花香蜜香、清香果香的香气特征,对凤凰单丛茶香气品质形成有重要作用。     

丙烯酰胺生殖毒性和发育毒性效应性生物标志物研究

目的：研究丙烯酰胺对机体造成的生殖毒性和发育毒性,并找出丙烯酰胺生殖毒性和发育毒性的效应性生物标志物。方法：通过对SD雄鼠灌胃22.5、11.25、5.625mg/（kg·d）的丙烯酰胺溶液,分析对其睾丸和附睾的影响,还对精子畸形率和睾丸内抗氧化酶系统进行评价,通过研究丙烯酰胺在动物模型中产生的效应性生物标志物来评价其生殖毒性。采用饮水给予怀孕第6d的孕鼠20.0、10.0、5.0mg/（kg·d）的丙烯酰胺,在怀孕0、7、12、16、20d称量体重并每天监测其饮水消耗量,观察胎鼠身长、尾长和骨骼发育情况;对断乳后的幼鼠采用直接饮水接触丙烯酰胺,在3—6w每周处死部分幼鼠,对其脏器和血液进行分析,通过研究丙烯酰胺在动物模型中产生的效应性生物标志物来评价其发育毒性。结果：丙烯酰胺显著增加了SD大鼠精子畸形率,显著降低了SD大鼠睾丸内抗氧化酶的活性;同时,丙烯酰胺导致幼鼠尾长的发育异常,幼鼠的肝、肾、脾、甲状腺发生组织病变,骨骼畸形率显著增加。结论：精子畸形率、睾丸内抗氧化物酶能够反应丙烯酰胺的生殖毒性,可作为丙烯酰胺生殖毒性的效应生物标志物;幼鼠尾长、骨骼畸形、组织病理学改变可反应丙烯酰胺的发育毒性,可作为丙烯酰胺的发育毒性的效应生物标志物。     

Evaluation of Canadian Holstein-Friesian Sires on Disposal Reasons of Their Daughters

Data were lactations of 82,971 Canadian Holstein-Friesian cows by 4,778 sires recorded from 1975 to 1978 and included final disposal codes. Progeny were required to have first lactation records and were grouped according to whether they had the opportunity to complete one, two, or three lactations. Henderson's Method I technique was used to estimate sire, herd, and error variances within opportunity group for culling for low production, sickness, and all undesirable causes. Variances were low, and many were negative. Heritabilities ranged from 0 to .13. Best linear unbiased prediction techniques were used to estimate sire proofs for disposal reasons. Sire proofs were not distributed normally.Sire proofs were correlated between opportunity groups within disposal reason. All correlations were positive and ranged from .21 to .82. Correlations were greatest between contiguous opportunity groups and lowest between proofs on early opportunity groups and proofs on cows that were close to maturity, indicating that first opportunity group proofs for disposal are not accurate predictors of longevity. Routine evaluation of sires on disposal reasons is not recommended.     

Effect of composition on the mechanical response of agglomerates of infant formulae

The objective of this paper is to investigate the relationship between the compositions of four typical infant formulae, the evolution of key quality characteristics during pneumatic conveying and the mechanical properties of individual agglomerates. Conveying experiments were conducted using a lab-scale rig. Four quality characteristics were measured before and after conveying: bulk density, volume mean diameter, wettability and percentage free fat. Relative breakages were calculated from particle size distributions. Uniaxial compression experiments were performed on individual agglomerates, giving forces and strains at failure and agglomerate stiffnesses. Coefficients of restitution of the agglomerates were obtained by video analyses of drop tests. The data indicate that bulk densities before conveying and the force and the strain of individual agglomerates at failure were related to the protein content. The force at failure and agglomerate stiffness were strongly correlated, and generally increased with increasing protein to fat ratio while the strain at failure decreased.     

三种红枣香气成分的分析及模块香精的调配

通过热脱附吸附金丝小枣、骏枣、灰枣3种红枣挥发性成分,利用GC-MS分析鉴定其香气。以香比强值为指标采用主成分分析三种红枣共有挥发物,聚类分析三种红枣共有挥发物成分的差异。结果表明骏枣含36种香气成分,金丝小枣54种,灰枣39种。3种红枣共有挥发物27种。根据聚类分析得骏枣和灰枣香气强度属于一类,金丝小枣单独一类。对比其部分共有挥发物及独有挥发物,金丝小枣香气成分种类丰富,并明显优于骏枣、灰枣。依据金丝小枣香气成分调制一支模块香精B,增强红枣香精A头香,增厚体香,平衡尾香,并增加了天然感与真实感。     

Looks like chicken: Exploring the law of similarity in evaluation of foods of animal origin and their vegan substitutes

Eighty omnivorous college students (four groups of 20) given chocolate milk, macaroni and cheese, chicken tenders and meatballs, or vegan substitutes for those four foods, were told either that they were eating the animal products or vegan substitutes. We expected the subjects who were told that they were eating vegan foods to rate those foods as less familiar and therefore expected them to be less willing to try them. We also thought that the subjects would expect those foods to taste worse and be more dangerous and disgusting, particularly the “flesh foods” and their vegan substitutes (chicken tenders and meatballs). Prior to eating the products, no difference was found in ratings of familiarity, willingness to try, anticipated distaste, danger, or disgust between those subjects shown the products of animal origin and those shown the vegan substitutes for those products nor between subjects told they were viewing animal or vegan products. However, there were differences between the meatball and the other foods on these measures regardless of what they were told about them (animal or vegan). All meatballs were rated as less familiar and more disgusting than the other foods and more dangerous than the chicken tender. Subjects expected the meatballs to taste worse than the other foods and were less willing to try them. Once they tasted the products, they rated the taste of the foods they were told were vegan better than those they were told were of animal origin. Vegan products that resemble animal products are responded to similarly to their animal counterparts as predicted by the law of similarity, one of the laws of sympathetic magic.     

近红外光谱在虫草菌丝体腺苷和多糖含量检测中的应用

目的 利用近红外光谱技术建立蝙蝠拟青霉菌丝体中腺苷和多糖含量的定量分析模型。方法 采用常规方法对蝙蝠蛾拟青霉菌丝体中腺苷和多糖含量进行测定, 利用近红外光谱技术建立测定菌丝体中腺苷和多糖含量的相关模型, 并通过蒙特卡罗偏最小二乘法(Monte Carlo Partial Least Square, MCPLS)和可移动窗口偏最小二乘法(Moving Window Partial Least Square, MWPLS)对模型进行优化。结果 该模型校正集预测值和真实值间的相关系数(Rc)分别为0.9400和0.8781, 预测均方根误差(Root Mean Square Error of Prediction Set, RMSEP)分别为0.5949和1.6617, 校正均方根误差(Root Mean Square Error of Calibration Set, RMSEC)分别为0.5844和1.5572。结论 该模型的稳健性、拟合度和预测能力均能达到令人满意的程度, 该方法可以推广应用到其他发酵产品的检测。     

新疆乳品中乳酸菌的多样性及耐药性分析

从新疆北部地区采集的样品中分离出103株乳酸菌并进行生理生化表型鉴定,对这些乳酸菌进行16S rRNA基因序列测序,构建系统发育树发现分离的乳酸菌主要为5个属分别为乳杆菌属、肠球菌属、乳球菌属、魏斯式菌属、明串珠菌属。采用纸片扩散法（K-B）研究不同属中不同乳酸菌对8种常见抗生素的耐药性分析。耐药性研究表明,分别有6株对链霉素、新霉素有耐药性,5株对红霉素有耐药性,7株对卡那霉素有耐药性,8株全部对萘啶酸具有耐药性,4株对万古霉素、四环素具有耐药性,2株对头孢唑肟存在耐药性。     

Determination of Total Charge Content of Whiskey by Polyelectrolyte Titration: Alteration of Polyphenols

ABSTRACT: Whiskeys with maturation periods of 1 to 26 y were analyzed by polyelectrolyte titration at various pH levels. The amounts of charge (polyelectrolyte concentration), which were mainly attributable to polyphenols which were extracted from wood casks during the maturation, were determined. The amounts of charge, namely polyphenols, increased with increasing periods of maturation. On the other hand, the ratio of amounts of charge in the alkaline region compared to those in the neutral region became smaller with longer storage. It was found that polyphenols were extracted over time from the wood cask by whiskey, but they were oxidized to alter the polyphenol compositions, which stabilized clusters (molecular association) between alcohol and water to make whiskeys mellow.