全文获取类型
收费全文 | 155篇 |
免费 | 19篇 |
国内免费 | 3篇 |
专业分类
电工技术 | 6篇 |
综合类 | 8篇 |
化学工业 | 25篇 |
金属工艺 | 3篇 |
机械仪表 | 3篇 |
建筑科学 | 24篇 |
矿业工程 | 2篇 |
轻工业 | 44篇 |
水利工程 | 2篇 |
石油天然气 | 7篇 |
武器工业 | 1篇 |
无线电 | 25篇 |
一般工业技术 | 12篇 |
冶金工业 | 5篇 |
原子能技术 | 1篇 |
自动化技术 | 9篇 |
出版年
2024年 | 1篇 |
2023年 | 3篇 |
2021年 | 8篇 |
2020年 | 9篇 |
2019年 | 5篇 |
2018年 | 3篇 |
2017年 | 2篇 |
2016年 | 6篇 |
2015年 | 6篇 |
2014年 | 6篇 |
2013年 | 10篇 |
2012年 | 9篇 |
2011年 | 12篇 |
2010年 | 13篇 |
2009年 | 6篇 |
2008年 | 8篇 |
2007年 | 11篇 |
2006年 | 12篇 |
2005年 | 8篇 |
2004年 | 3篇 |
2003年 | 9篇 |
2002年 | 4篇 |
2001年 | 4篇 |
2000年 | 1篇 |
1999年 | 2篇 |
1998年 | 3篇 |
1996年 | 1篇 |
1995年 | 3篇 |
1994年 | 1篇 |
1992年 | 4篇 |
1991年 | 2篇 |
1990年 | 2篇 |
排序方式: 共有177条查询结果,搜索用时 312 毫秒
41.
选取缩略语中特殊的一类现象——大学缩略名,采用共时研究的方法,总结出提缩法、截除法和截缩法三种构造大学缩略名的方法,重点提出大学名缩略的过程受到核义原则、最简化原则、易联想原则和区别性原则的制约,并根据这些原则发现和总结出大学缩略名存在缩略同名、缩略不统一和缩略不合理等问题,并据此提出若干可操作性缩略建议。 相似文献
42.
Zero‐Trans Cake Shortening: Formulation and Characterization of Physicochemical,Rheological, and Textural Properties 下载免费PDF全文
Zahra Saghafi Mohammad Hossein Naeli Mahnaz Tabibiazar Azizollaah Zargaraan 《Journal of the American Oil Chemists' Society》2018,95(2):171-183
Cake shortening is an important ingredient that imparts taste and texture in the cake as the final product. Hydrogenated shortenings contain high amounts of trans fatty acids, which is considered a risk factor for obesity, cancers, and cardiovascular diseases. In this research, chemically interesterified blends of canola oil (CO) and palm stearin (PS) were recruited in order to formulate zero‐trans shortening, specifically for cake application. The optimization of shortening formulation was performed by Design‐Expert software, considering melting, congelation, textural, and rheological properties of cake shortening as responses. The formulated shortening in the weight ratio of 66.41:33.58 (PS:CO) (%, w/w) was analyzed and compared with two commercial cake shortenings in terms of fatty acid and triacylglycerol composition, slip melting point (SMP), solid fat content (SFC), and rheological and textural properties. The results showed that the formulated zero‐trans cake shortening with 0.2% trans, 47.2% saturated fatty acids, SMP of 40.9 °C, SFC of 10.51% at 37 °C, firmness of 1522.5 g, and linear viscoelastic range of 0.035% had the most acceptable criteria among cake‐shortening samples. The findings of this study offer insights into the relationship between shortening functionality and physicochemical properties and serve as a base for future studies on zero‐trans shortenings formulation. 相似文献
43.
44.
根据工程特点,对储煤仓顶盖结构的原设计方案进行科学大胆改进,缩短了工期,降低了成本,保证了质量,取得了良好的效益。 相似文献
45.
46.
47.
Bockki Min Seung Mi Lee Sang‐Ho Yoo George E. Inglett Suyong Lee 《Journal of the science of food and agriculture》2010,90(13):2208-2213
BACKGROUND: With rising consumer awareness of obesity, the food industry has a market‐driven impetus to develop low‐fat or fat‐free foods with acceptable taste and texture. Fancy buckwheat flour was thus subjected to steam jet‐cooking and the performance of the resulting product in cake‐baking was evaluated as a fat replacer. RESULTS: Steam jet‐cooking caused structural breakdown and starch gelatinization of buckwheat flour, thus increasing its water hydration properties. In the pasting measurements, steam jet‐cooked buckwheat flour exhibited high initial viscosity, while no peak viscosity was observed. Also, the suspensions of steam jet‐cooked buckwheat flour exhibited shear‐thinning behaviors, which were well characterized by the power law model. When shortening in cakes was replaced with steam jet‐cooked buckwheat gels, the specific gravity of cake batters significantly increased, consequently affecting cake volume after baking. However, shortening replacement with steam jet‐cooked buckwheat up to 20% by weight appeared to be effective in producing cakes as soft as the control without volume loss. CONCLUSION: When buckwheat flour was thermomechanically modified by steam jet‐cooking, it was successfully incorporated into cake formulations for shortening up to 20% by weight, producing low‐fat cakes with comparable volume and textural properties to the control. Copyright © 2010 Society of Chemical Industry 相似文献
48.
49.
This paper reviewed the mechanisms by which glycolytic rate and pre-rigor stretching of muscle impact on meat quality. If muscle is free to shorten during the rigor process extremes in glycolytic rate can impact negatively on meat quality by inducing either cold or rigor shortening. Factors that contribute to variation in glycolytic rate include the glycogen concentration at slaughter and fibre type of the muscle. Glycolysis is highly sensitive to temperature, which is an important factor in heavy grain fed carcasses. An alternative solution to controlling glycolysis is to stretch the muscle pre-rigor so that it cannot shorten, thus providing an insurance against extremes in processing conditions. Results are presented which show a large reduction in variance (both additive and phenotypic) in tenderness caused by pre-rigor stretching. Whilst this did not impact on the heritability of shear force, it did reduce genotype differences. The implications of these results on the magnitude of genotype effects on tenderness is discussed. 相似文献
50.
The Shortening of MWNT‐SPION Hybrids by Steam Treatment Improves Their Magnetic Resonance Imaging Properties In Vitro and In Vivo 下载免费PDF全文
Laura Cabana Maxime Bourgognon Julie T.‐W. Wang Andrea Protti Rebecca Klippstein Rafael T. M. de Rosales Ajay M. Shah Josep Fontcuberta Ester Tobías‐Rossell Jane K. Sosabowski Khuloud T. Al‐Jamal Gerard Tobias 《Small (Weinheim an der Bergstrasse, Germany)》2016,12(21):2893-2905
Carbon nanotubes (CNTs) have been advocated as promising nanocarriers in the biomedical field. Their high surface area and needle‐like shape make these systems especially attractive for diagnostic and therapeutic applications. Biocompatibility, cell internalization, biodistribution, and pharmacokinetic profile have all been reported to be length dependent. In this study, further insights are gotten on the role that the length of CNTs plays when developing novel contrast agents for magnetic resonance imaging (MRI). Two samples of CNTs with different length distribution have been decorated with radio‐labeled iron oxide nanoparticles. Despite characterization of the prepared hybrids reveals a similar degree of loading and size of the nanoparticles for both samples, the use of short CNTs is found to enhance the MRI properties of the developed contrast agents both in vitro and in vivo compared to their long counterparts. 相似文献