獭兔皮的组织结构研究

利用光学显微镜和扫描电子显微镜研究了獭兔皮毛被及皮板的组织结构,基本上探明了獭兔皮毛和皮板的组织构造特点。     

旱獭皮组织结构的研究

本文对甘萧地区旱獭皮组织结构特点进行了研究，研究结果表明獭皮毛被富有光泽，皮板纤维粗壮，编织紧密，强度较高。皮板中脂腺虽然不发达，但皮下层的脂肪细胞多，形成脂肪层，毛根贯穿真皮层就长在这层脂肪中，故加工时前工序应注意加强脱脂，后整理应注意匀，以防伤及毛根，而使毛脱落。     

鹅毛皮的部位差探讨与利用

鹅毛皮部位不同,皮板、毛被的特点与质量不同,毛被与皮板的结合牢度相差较大。因此,不同部位有不同的用途。     

毛皮技术百问(2)

第一章基础篇 (接上期) 1-5 毛皮与制革有哪些相同点和不同点? 毛皮与制革都是皮革行业的子行业,都归中国皮革协会领导.制革是源于毛皮而胜于毛皮.其原因是制革比毛皮的应用范围更为广泛,原料皮更有规律性,更容易实现机械化、自动化、现代化.它们相同点是:A.以动物皮为原料皮.但毛皮是在皮板质量合格的前提下,更看重毛被质量;制革却以皮板质量为重.B.基础理论和专业理论基本相同,基础理论相同:     

狗皮光面毛革的试制

光面毛革是裘皮深加工、精加工的产品.具有皮板轻软、光亮、舒适;毛被滑润,色泽协调,美观等特点.因而深受广大消费者欢迎.由于狗原料皮具有毛色漂亮,皮板厚薄均匀,皮纤维较疏松,资源丰富,价格低廉的优势,故从技术上、经济上生产狗皮光面毛革已有可能.     

科纳素系列染料在毛皮染色中的应用

详细介绍了用科纳素染料F16系列染家兔皮等杂皮、F36系列染蓝狐皮等细皮、F46系列作草上霜产品染色、F56系列染毛尖、F66系列染皮板的工艺方法。     

细毛羊皮皮板分层裂面问题与组织构造的关系

本文叙述了细毛羊皮皮板分层裂面与皮板组织结构间的关系,提出了解决皮板在加工过程中避免分层裂面的工艺方法。     

双防水型铬鞣绵羊毛皮的制备工艺探讨

结合工艺实例,详细讨论了皮板、毛被双防水型绵羊毛皮的制备方法及注意事项,包括水洗、中和、加脂、喷涂、后整理等工艺。     

温州皮革厂机械设备水场涂饰反差大

由于毛皮的皮板和毛被的构成具有其特殊性，所以保存时应区别于其它服装，总的来讲，保存裘皮服装要求通风，干燥，这是因为裘皮的皮板和毛被是以蛋白质为主要成份的纤维，在潮湿状态下，皮板易霉变腐烂，毛被易被虫蚀，在入箱保存前，首先应除净裘皮服装上的油污和灰尘，因为灰尘中带有大量的霉菌，长期依附于裘皮服装，易引起裘皮蛋白质变性破坏。     

科纳素系列染料在毛皮染色中的应用

详细介绍了用科纳素染料F16系列染家兔皮等杂皮、F36系列染蓝狐皮等细皮、F46系列作草上霜产品染色、F56系列染毛尖、F66系列染皮板的工艺方法.     

曲虫治理效果分析

通过对曲虫治理应用研究效果的分析 ,结果表明 :质量效果提高 7% ,糖化力效果提高 80 % ,综合效果提高 92 7%。     

Improvement of Rates of Convergence of Iterative Methods of Variance Component Estimation

Exact relationships of quadratic forms for restricted maximum likelihood and the pseudo expectation methods were presented for balanced data and a model containing only one random factor. These relationships were extended to unbalanced data as approximations and schemes for improving the convergence rates of the two methods of variance component estimation were compared empirically using simulated data. The proposed scheme for restricted maximum likelihood was found inappropriate since it converged rapidly but to a different final estimate than usual restricted maximum likelihood. The scheme for the pseudo expectation method also converged rapidly and to the same final estimates as the usual pseudo expectation method, and hence is recommended as a means of obtaining a good prior for restricted maximum likelihood.     

葵花籽油中酸价测量结果的不确定度评价

目的 分析食用油中酸价测定的不确定度来源并建立不确定度评定方法, 为检验数据的可靠性和准确性提供参考。方法 依据GB 5009.229-2016《食品安全国家标准 食品中酸价的测定》和JJF 1059.1-2012《测量不确定度评定与表示》建立数学模型, 计算各变量的不确定度, 最终计算扩展不确定度。结果 结果显示, 样品中酸价的扩展不确定度为U=1.764×10?3 mg/g, 样品中酸价含量为(0.16±0.002) mg/g(置信水平95%, 包含因子k=2)。结论 在测定过程中, 测量重复性对总的不确定度影响最大, 其次是滴定管的体积。     

制革清洁化技术的进展

就皮化材料与清洁化制革的关系、目前传统制革工艺中存在的严重污染问题及针对这些问题近年来采取的新的方法进行了探讨,指出清洁化是我国制革行业的必由之路,清洁化制革工艺与皮化材料的关系非常密切,只有研发出相应新型的、高吸收的、功能型的、易降解型的各类化工材料,才合乎清洁化生产的要求。在制革工艺中采用生物酶制剂辅助浸水脱脂、无硫脱毛与无灰浸碱工艺、无铵脱灰/碱等改造传统工艺,减少污染;采取高吸收铬鞣、无铬或少铬鞣制,提高铬的吸收率或克服铬鞣的弊端;在染整中,合成并采用助剂辅助染料、复鞣剂和加脂剂等的吸收与结合。这几方面通过集成应用,方可减轻制革的污染,实现清洁化生产。同时,就皮革固废物的利用及水的循环使用问题提出些看法。     

奇可力皂苷抗脑缺血作用研究

目的：探讨奇可力皂苷（Grosss aponin of Chicory，GSC）的抗脑缺血作用。方法：以电阻法阻断大脑一侧中动脉造成局灶性脑缺血模型，观察奇可力皂苷对脑梗死面积及行为评分的影响以探讨其抗脑缺血作用及其作用机理：采用大鼠血瘀模型，观察奇可力皂苷对血瘀大鼠血小板聚集率及凝血时间的影响。结果：GSC10．4、20，8、31．2mg／kg均可明显减少脑梗死面积（p〈0．05，P〈0．01）；GSC10．4、20．8、31．2mg／kg可明显抑制血瘀大鼠的血小板聚集率（p〈0．05），还可明显延长血瘀大鼠的凝血时间（p〈0．05）。结论：GSC具有一定的抗脑缺血作用，其作用机理可能与降低血小板聚集性及抗凝血作用相关。     

An assessment of dynamics of electrochemical polymerization of pyrrole

In this work, the dynamics of electrochemical polymerization of pyrrole was assessed by measuring the system current and polymer yield under different cell dimensions and polymerization conditions. The effects of distance between electrodes on the yield and system current were described. Also, the effects of monomer concentration and electrode size on monomer-to-polymer conversion were critically analyzed with respect to the energy supplied to the system. The enthalpy of the process was also determined. It was observed that the yield was directly proportional to the product of system current and time when sufficient monomer and electrode space for deposition of polymer were available otherwise the electrical energy was transformed more into heat energy. Electrochemical polymerization of pyrrole was found to be an exothermic process, and the enthalpy of polymerization increased with an increase in polymerization temperature.     

Effect of Starch of Textural Properties of Surimi Gel

The proportion of amylose and amylopectin, and the rheological behavior of eight starches were correlated with the textural properties of starch-containing surimi gels. Findings included the following: increased firmness and cohesiveness with increases in water-holding ability and viscosity of the starch; increased expressible moisture and penetration force with an increase in the amylose fraction due to increased retrogradation: increased tensile force with an increase in the amylopectin fraction: and increased cohesiveness and chewiness after refrigerated storage for all starches with a greater increase for high amylose starches. Surimi gels containing potato starch were the firmest and most cohesive. The textural properties of starch-containing surimi gel correlated well (r = 0.90 to 0.97, P>0.05) with the viscosity of starch paste if 100% amylopectin-containing and pregelatinized starches were excluded from the correlation.     

Technology of removal of unwanted components of dry beans

Dry beans are one of the inexpensive sources of reasonable quality proteins, carbohydrates, vitamins, minerals, and fiber. Their underutilization has been attributed to the presence of several factors, such as proteinase inhibitors, flatus factors, tannins, phytates, phytohemagglutinins, and the beany flavor. Removal of these unwanted components promises improved utilization of dry beans for human food purposes. The current methodology of removing these factors includes several food processing techniques such as soaking, dry and moist heat treatment, filtration, germination, and fermentation. The commercial feasibility of these processes will be discussed. The current lack of knowledge about deleterious effects of the residual components (remaining after processing) will be addressed and the needs for the future will be discussed.     

两种脂肪酸聚甘油酯(PGE)的性质比较

脂肪酸聚甘油酯(Polyglycerol esters of fatty acids,简写为PGE)在常温下有半固态和固态两种存在状态,本文通过对分别添加这两种PGE的软冰淇淋基料进行粘度、pH、粒径分析和垂直扫描分散稳定性分析(Turbiscan),发现半固态PGE的添加量为0.2%时,乳状液的粘度最低,粒径最小,稳定性最好;固态PGE的添加量为0.4%时.乳状液的粘度最低,粒径最小.通过比较发现,两种PGE对基料的影响有很大差别:半固态PGE能使乳状液的粒子更小,并能有效延长乳状液的稳定性;而固态PGE由于其熔点较高,可以促进脂肪结晶.     

精梳小卷粘卷的原因初探

从原料、气候、预并工艺、条并卷联合机和精梳机五个方面分析了精梳小卷粘卷的原因,并分别找出了整体粘卷和边缘粘卷的原因,提出消除粘卷的措施为：控制精梳准备工序的牵伸倍数、控制精梳工序的温湿度、正确选择成卷压力、采用防粘装置、改进精梳机承卷辊等。