全文获取类型
收费全文 | 310篇 |
免费 | 12篇 |
国内免费 | 1篇 |
专业分类
电工技术 | 4篇 |
综合类 | 3篇 |
化学工业 | 33篇 |
金属工艺 | 24篇 |
机械仪表 | 12篇 |
建筑科学 | 11篇 |
矿业工程 | 3篇 |
能源动力 | 2篇 |
轻工业 | 175篇 |
石油天然气 | 9篇 |
武器工业 | 1篇 |
无线电 | 5篇 |
一般工业技术 | 9篇 |
冶金工业 | 27篇 |
原子能技术 | 2篇 |
自动化技术 | 3篇 |
出版年
2024年 | 1篇 |
2023年 | 2篇 |
2022年 | 3篇 |
2021年 | 7篇 |
2020年 | 4篇 |
2019年 | 3篇 |
2018年 | 2篇 |
2017年 | 13篇 |
2016年 | 11篇 |
2015年 | 12篇 |
2014年 | 16篇 |
2013年 | 20篇 |
2012年 | 12篇 |
2011年 | 28篇 |
2010年 | 12篇 |
2009年 | 23篇 |
2008年 | 15篇 |
2007年 | 15篇 |
2006年 | 15篇 |
2005年 | 12篇 |
2004年 | 11篇 |
2003年 | 15篇 |
2002年 | 8篇 |
2001年 | 11篇 |
2000年 | 10篇 |
1999年 | 12篇 |
1998年 | 4篇 |
1997年 | 8篇 |
1996年 | 8篇 |
1995年 | 2篇 |
1994年 | 3篇 |
1993年 | 2篇 |
1988年 | 1篇 |
1986年 | 2篇 |
排序方式: 共有323条查询结果,搜索用时 15 毫秒
321.
322.
David Betancur Ancona Maira Rubi Segura Campos Luis A. Chel Guerrero Gloria Dvila Ortíz 《Starch - St?rke》2011,63(8):475-484
Velvet bean (Mucuna pruriens) and lima bean (Phaseolus lunatus) starches were isolated from seeds and their structural characteristics evaluated using XRD, size‐exclusion chromatography and light scattering analyzes. Total starch, available starch, RS and in vitro digestibility were also determined. Structural and nutritional characteristics of Velvet bean and Lima bean starches were compared to those of commercial corn starch. The legumes starches presented a C‐type XRD pattern and crystallite sizes of 43.1 Å for velvet bean and 48.3 Å for lima bean. Lima bean starch average molar mass (4.9 × 106 g/mol) was slightly higher than the velvet bean starch (3.04 × 106 g/mol). Size‐exclusion chromatography indicated structural similarity between the lima bean and corn starches which differed from that of the velvet bean starch. Hydrodynamic radius (RH) for the velvet bean and lima bean starches was 45.5 and 55 nm, respectively, and their radius of gyration (RG) was 67.7 and 82.5 nm, respectively. Total starch content in all three starches was greater than 98%. Their complex crystalline structure provided the legume starches lower in vitro digestibility values than the corn starch. RS content in both the velvet bean starch (7.72%) and lima bean starch (5.66%) was higher than in the corn starch, essentially qualifying these polysaccharides as natural dietary fiber sources, with the associated physiologic advantages. 相似文献
323.
Resistant Starch and Health — Himalaya 292, a Novel Barley Cultivar to Deliver Benefits to Consumers
David L. Topping Matthew K. Morell Roger A. King Zhongyi Li Anthony R. Bird Manny Noakes 《Starch - St?rke》2003,55(12):539-545
Dietary and lifestyle change is a recognised strategy for the management and prevention of socio‐economically important non‐infectious diseases. Dietary fibre is composed largely of non‐starch polysaccharides (NSP), and greater consumption of NSP‐rich foods relieves simple constipation very effectively. Starch (as resistant starch, RS) is also receiving attention for its potential role in promoting colonic function. Resistant starch is that fraction of starch which escapes human small intestinal digestion and enters the large bowel where (together with a variable fraction of NSP) it is fermented by the resident microflora. The resulting short chain fatty acids (SCFA) are taken up by the large bowel and metabolised. SCFA mediate many of the health benefits ascribed to NSP and RS. Starch consumption is low in affluent westernised countries, despite recommendations by health agencies. In Australia, foods enriched in RS as a high amylose maize starch have gained consumer acceptance. However, scope remains for additional products and ingredients and a company, Ascentia Pty Ltd, has been established to develop a novel barley cultivar (Hordeum vulgare var. himalaya 292) for this purpose. This cultivar has a specific gene alteration leading to a loss of starch synthetase lla activity resulting in a grain which is low in starch but disproportionately higher in amylose and also NSP. Animal and human studies have shown that Himalaya 292 is high in RS relative to existing products and has a low glycaemic index and the cultivar offers promise as a vehicle to deliver health benefits to consumers. 相似文献