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家纺设计中针织组织结构的设计与选择 总被引:1,自引:0,他引:1
探讨在家纺产品设计中正确设计、选择针织组织结构的方法。介绍不同家纺产品的组织结构设计要点,包括窗帘帷幕用针织品、幕用针织品、包覆用针织品、床上用针织品、蚊帐类针织品、棉毯与毛毯、针织地毯、贴墙用针织品,提出应根据各种家纺用途对针织组织结构进行合理设计、选择与搭配。 相似文献
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介绍了新型四帘式交叉折叠铺网机的设计方案和实际运行情况。通过新式落棉辊机构和其他结构设计方案,解决了四帘式交叉铺网机的飘网现象,同时实现多层纤维网输出。新型四帘式交叉折叠铺网机的铺网输出面密度可达3 000 g/m2,能满足某些针刺非织造布生产工艺的特殊要求。 相似文献
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不锈钢蚊钉是将100 根0-64 mm 的奥氏体不锈钢丝用树脂胶水粘成线板冲压成的无头钉,要求钢丝强度为1100 MPa 且均匀,钢丝平整、挺直,无残余应力,无磁性。介绍蚊钉及蚊钉用不锈钢丝生产工艺技术。 相似文献
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通过对3类生产设备质量安全事故的案例分析,阐明了生产设备设计、制造中应注意的安全技术问题,以引起机械生产设备设计、制造者的注意。 相似文献
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文章通过对石灰窑窑气洗涤系统的工艺设备进行计算,与传统沿海内地碱厂进行技术对比的基础上,论证了在新建大型纯碱装置的窑气净化工艺设备选型上,选择浊水循环系统石灰窑窑气净化系统达到了设计要求,满足了创新后的设计生产能力。 相似文献
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数据通路是影响喷码系统喷印速度和质量的主要因素。针对喷墨印刷系统中数据的传输与控制问题,应用着色时间Petri网,并根据控制系统的特点引入抑制弧,对传统喷码系统建立模型,分析其数据传输速度的瓶颈,提出一种新的喷码机数据通路,通过FIFO栈的使用以及命令数据和图像数据的分开传输,实现传输速度上的提高。针对改进后的系统,给出FIFO栈的Petri网设计模型和喷头驱动流程。 相似文献
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Rates of production of acetate, propionate, and butyrate in the rumen of lactating dairy cows given normal and low-roughage diets 总被引:8,自引:0,他引:8
Sutton JD Dhanoa MS Morant SV France J Napper DJ Schuller E 《Journal of dairy science》2003,86(11):3620-3633
Five lactating dairy cows with a permanent cannula in the rumen were given (kg DM/d) a normal diet (7.8 concentrates, 5.1 hay) or a low-roughage (LR) diet (11.5 concentrates, 1.2 hay) in two meals daily in a two-period crossover design. Milk fat (g/kg) was severely reduced on diet LR. To measure rates of production of individual volatile fatty acids (VFA) in the rumen, 0.5 mCi 1-(14)C-acetic acid, 2-(14)C-propionic acid, or 1-(14)C-n-butyric acid were infused into the rumen for 22 h at intervals of 2 to 6 d; rumen samples were taken over the last 12 h. To measure rumen volume, we infused Cr-EDTA into the rumen continuously, and polyethylene glycol was injected 2 h before the morning feed. Results were very variable, so volumes measured by rumen emptying were used instead. Net production of propionic acid more than doubled on LR, but acetate and butyrate production was only numerically lower. Net production rates pooled across both diets were significantly related to concentrations for each VFA. Molar proportions of net production were only slightly higher than molar proportions of concentrations for acetate and propionate but were lower for butyrate. The net energy value (MJ/d) of production of the three VFA increased from 89.5 on normal to 109.1 on LR, equivalent to 55 and 64% of digestible energy, respectively. Fully interchanging, three-pool models of VFA C fluxes are presented. It is concluded that net production rates of VFA can be measured in non-steady states without the need to measure rumen volumes. 相似文献
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蔗地间套种西瓜配套技术初步研究 总被引:3,自引:0,他引:3
蔗地间套种西瓜是大搞蔗田综合利用的一项好措施。生产实践表明,其能增加复种指数,提高光能利用率挖掘土地增产潜力,增加单位面积产量和纯收入,取得明显的经济效益和社会效益。本文阐述了配套栽培管理技术以及其增产依据和作用。建议因地制宜大面积推广应用。 相似文献
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As mosquito-borne diseases are increasing continuously throughout the world, mosquito repellent textiles are in demand as a preventive measure for mosquito bites to avoid diseases. In this study, mosquito repellent chemical was prepared by modification of N, N-Diethyl-3-methylbenzamide (DEET) and applied on to cotton textiles. As DEET is a well-known mosquito repellent, it is a main ingredient in this modified DEET (MD). Mosquito repellent textiles were prepared by padding cotton fabrics with MD using a conventional pad-dry-cure method. Mosquito repellent activity was evaluated by cage test method wherein a human arm covered with the treated textiles to Aedes aegypti mosquitoes was exposed. Fabrics treated with MD presented a higher and longer lasting protection from mosquitoes assuring over 90% mosquito repellency for unwashed treated fabrics and between70 and 80% for 10 times washed treated fabrics. 相似文献