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排序方式: 共有74条查询结果,搜索用时 15 毫秒
1.
针对单点登录中的跨域身份认证问题,提出了一种基于可变Cookie的方案解决跨域单点登录,使用随机数字生成票据,并作为传统加密算法的会话密钥对客户端的Cookie进行加密,采用现代加密算法在异域系统之间安全传递票据,每次认证产生新的票据并更新异域应用系统的Cookie。通过对票据产生和传输以及Cookie加密和常见攻击的安全性分析,可以实现跨域单点登录的功能并保证身份认证安全可信。 相似文献
2.
阐述了在超文本传输协议 (HTTP)中实现会话的必要性 ,分析并解决了在实现过程中遇到的几个关键问题 ;系统地描述了HTTP中会话的工作机制 ,给出了在HTTP中实现会话的若干方法及基于PHP的实现代码 ,并对比了各种方法的优缺点。这些方法对实现Web服务器集群中共享会话数据 ,将同一会话的Web请求重定向到相同的Web服务器上 ,给出了技术上实现的可能性。对Internet应用的安全起到了一定的作用 相似文献
3.
采用固相微萃取和气相色谱-质谱联用技术,分析了菊花曲奇饼干的香气成分.对菊花的香气成分进行了分析,共鉴定了其中的59个成分,占其香气成分总数的65.82%.对未加菊花的曲奇饼干的香气成分进行了分析,共鉴定了其中的69个成分,占其香气成分总数的92.81%;对菊花曲奇饼干的香气成分进行了分析,共鉴定了其中的84个成分,占其香气成分总数的94.39%.在菊花曲奇饼干的香气组成中,菊烯、樟脑、β-榄香烯、龙脑为菊花本身的香气组成. 相似文献
4.
Influence of konjac flour on foaming properties of milk protein concentrate and quality characteristics of gluten‐free cookie 下载免费PDF全文
Adisak Akesowan 《International Journal of Food Science & Technology》2016,51(7):1560-1569
The effects of konjac flour (KF) for modifying the foaming properties of milk protein concentrate (MPC) and characteristics of gluten‐free rice cookies were investigated. The three variables of konjac concentration (0.1–0.4%), pH (pH 5–9) and NaCl concentration (0.2–0.6 м) were studied. Both KF and pH had considerable effects on the foaming capacity (FC) and foaming stability (FS) of MPC. The NaCl had a negligible effect. Lowered FC and FS observed at pH 9 and pH 5 were increased with the increase in KF addition. Batter characteristics (flowability and consistency), cookie quality (moisture, yield, spread ratio, specific volume, hardness and colour) and sensory acceptance were evaluated in gluten‐free cookies with 0%, 0.25% and 0.4% KF. Konjac supplementation increased batter characteristics, yield, specific volume and hardness, but decreased lightness. Panellist acceptance, especially regarding texture and overall acceptability, increased in gluten‐free cookies with 0.4% KF. A higher purchasing decision was found for cookies with added KF. 相似文献
5.
Susanne Struck Doris Jaros Charles S. Brennan Harald Rohm 《International Journal of Food Science & Technology》2014,49(9):1963-1976
This review presents the state‐of‐the‐art concerning the application of natural and artificial high‐intensity sweeteners, fructans and bulking agents such as polyols as sugar replacers in sweet‐baked goods and their effects on product characteristics. The recent much publicised attention given to weight gain of the population and its consequences on the occurrence of diet‐related diseases in developed countries has influenced the food manufacturers attempts to provide the consumer with reduced energy products. The replacement of sucrose in sweet bakery products by alternative natural or artificial sweeteners can be a challenging issue. Sucrose as a main ingredient in sweet bakery products contributes, aside from providing sweetness, to numerous processing and product characteristics. Intense sweeteners have a high sweetness compared with sucrose but lack in their contribution to the body of the product, whereas the replacement of sucrose with bulking sweeteners may result in products with a similar body but a lack in taste and flavour. 相似文献
6.
该研究将L-半胱氨酸盐酸盐添加到面团中制作曲奇,研究了不同添加量(0.3、0.6、1.0、1.5 g/kg)L-半胱氨酸盐酸盐对4种有害醛类含量、曲奇外观和挥发性物质的影响。结果表明:添加后,曲奇的接受度高于未添加对照组,且4种有害醛类的含量显著降低。当L-半胱氨酸盐酸盐添加量为1.5 g/kg时,曲奇中5-羟甲基糠醛、3-脱氧葡萄糖醛酮、乙二醛和丙酮醛含量分别降低28.75%、62.73%、46.27%、36.59%。微固相萃取-气质联用结果显示:添加后,曲奇的挥发性醛、醇和吡嗪类物质含量增加,大部分酮类物质含量减少。细胞毒性实验结果显示:添加L-半胱氨酸盐酸盐的曲奇水提取物添加对人胃粘膜上皮细胞活力有促进作用。结合实验分析,曲奇最适L-半胱氨酸盐酸盐添加量为1.0 g/kg。 相似文献
7.
以预糊化小米粉为主要原材料,研制小米曲奇预拌粉。通过单因素试验,研究小米粉添加量、吉士粉添加量、奶粉添加量、泡打粉添加量、糖粉添加量对小米曲奇感官评分和硬度的影响。采用Box–Behnken法设计试验方案,运用响应面分析法建立二阶多项式非线性回归方程和数值模型,以感官评分和硬度为评判指标,优化小米曲奇预拌粉配方。优化后配方为:小米粉60.00g、低筋面粉40.00 g、吉士粉6.50 g、泡打粉1.00 g、糖粉45.00 g、奶粉8.00 g。在此条件下小米曲奇的理论感官评分为95.04分、硬度为510.11 g。在此配方下制作的小米曲奇呈棕黄色,与市售黄油曲奇相比,具有独特的小米香气和风味。预拌粉降低了小米曲奇制作的专业性、技术性,提高生产效率,利于生产品质稳定、健康味美的小米曲奇产品。 相似文献
8.
9.
Acrylamide formation in a cookie system as influenced by the oil phenol profile and degree of oxidation 总被引:1,自引:0,他引:1
Gema Arribas-Lorenzo Vincenzo Fogliano Francisco J. Morales 《European Food Research and Technology》2009,229(1):63-72
The purpose of this study was to investigate the effect of the olive oil phenolic compounds as well as of thermoxidised oil
on the formation of acrylamide in a cookies system. Three virgin olive oils having different phenolic profile and a thermoxidised
sunflower oil were selected. Cookies were baked at 190 °C for different times (8–16 min) following a basic recipe where type
of oil was the variable. Additionally to acrylamide (AA), other parameters such as colour, moisture, antioxidant activity
(AOA), and hydroxymethylfurfural (HMF) were measured. Results showed that concentration and composition of phenolic moiety
of virgin olive oil significantly affect the acrylamide formation, particularly at prolonged baking time. Virgin olive oil
with a higher dihydroxy/monohydroxy ratio was more efficient in the AA mitigation and AA was reduced up to 20%. Colour and
AOA were not significantly different among the three types of oils. However, AA is dramatically increased when thermoxidised
oil is used with a parallel increase of browning and HMF. It was concluded that lipid oxidation products should be considered
as an important factor in acrylamide formation during baking of fat-rich products. 相似文献
10.
利用洞道干燥设备模拟工业化的焙烤环境,测定粤式杏仁饼的干燥特性,采用扫描电镜和图像分析法测定粤式杏仁饼的孔隙微观结构,基于分形理论探究粉料粒度对粤式杏仁饼干燥及其品质的影响。研究表明:对于低水分含量的杏仁饼而言,其内部为多孔结构,具有明显的分形特征。随着粒度的减小,杏仁饼孔隙结构变得更加复杂。在100℃或120℃下焙烤时,140目粉料制饼的干燥速率都明显高于60目和100目粉料制饼的干燥速率。成品质构分析表明,随着粉料粒度的减小(60目→100目→140目),杏仁饼的硬度、内聚性和咀嚼性都分别有显著减低(p0.05)。从感官评价结果来看,140目粉料制饼要优于60目、100目粉料制饼。因此,在制备杏仁饼粉料时,在一定范围内减小粉料的粒度,既可以提高干燥速率又可以保证产品品质。 相似文献