全文获取类型
收费全文 | 179篇 |
免费 | 14篇 |
专业分类
电工技术 | 2篇 |
化学工业 | 41篇 |
金属工艺 | 3篇 |
机械仪表 | 4篇 |
建筑科学 | 3篇 |
矿业工程 | 1篇 |
能源动力 | 8篇 |
轻工业 | 70篇 |
水利工程 | 2篇 |
石油天然气 | 1篇 |
无线电 | 10篇 |
一般工业技术 | 21篇 |
冶金工业 | 17篇 |
原子能技术 | 1篇 |
自动化技术 | 9篇 |
出版年
2024年 | 2篇 |
2023年 | 3篇 |
2022年 | 6篇 |
2021年 | 7篇 |
2020年 | 7篇 |
2019年 | 9篇 |
2018年 | 12篇 |
2017年 | 10篇 |
2016年 | 14篇 |
2015年 | 6篇 |
2014年 | 10篇 |
2013年 | 15篇 |
2012年 | 10篇 |
2011年 | 13篇 |
2010年 | 11篇 |
2009年 | 10篇 |
2008年 | 7篇 |
2007年 | 9篇 |
2006年 | 8篇 |
2005年 | 2篇 |
2004年 | 3篇 |
2003年 | 3篇 |
2001年 | 3篇 |
2000年 | 4篇 |
1997年 | 2篇 |
1996年 | 4篇 |
1995年 | 2篇 |
1993年 | 1篇 |
排序方式: 共有193条查询结果,搜索用时 0 毫秒
1.
2.
Catalysis Letters - Here, we successfully fabricated sulfurized Co-Mo alloy thin film electrodes with different compositions and studied their catalytic properties for hydrogen evolution reaction... 相似文献
3.
4.
5.
Hakime Hulya Orak Hulya Yagar Sebnem Selen Isbilir 《Food science and biotechnology》2012,21(2):373-387
In this study, the antioxidant activities of juice, peel, and seed parts of pomegranate were investigated by using DPPH scavenging
activity, β-carotene bleaching method, reducing power, and metal chelating activity. Sample of pomegranates which are named
Punica granatum L. cv. Hicaznar, genotype 19–121, genotype 17–67, and genotype 19–66 obtained from BATEM (West Mediterranean Agricultural Research Institute) in Anlalya. The EC50 values of DPPH scavenging activities in peel extracts (PE) had 23.4-fold higher than the juice extracts (JE), and the seed
extracts (SE) had 2.3-fold higher than JE. The reducing power in peel extracts was found to be 4.7-fold higher than SE and
10.5-fold higher than the JE. The highest metal chelating capacity (37.22%) was determined in peel, while the lowest (7.151%)
in seed. Generally, in peel, the total polyphenol, flavonoid, tannin contents, and in juice, the total polyphenol, anthocyanin,
tannin contents, and acidity significantly affected to antioxidant activities. 相似文献
6.
Ozonation of a natural tannin (NT; CODo?=?1195 mg/L; TOCo?=?342 mg/L; BOD5,o?=?86 mg/L) and a synthetic tannin ST; CODo?=?465 mg/L; TOCo?=?55 mg/L; BOD5,o?=?6 mg/L) being frequently applied in the polyamide dyeing process was investigated. Synthetic wastewater samples containing these tannins individually were prepared and subjected to ozonation at varying ozone doses (625– 1250 mgO3/L wastewater), at pH?=?3.5 (the application pH of tannins) and pH?=?7.0 at an ozone dose of 1125 mgO3/L wastewater. The collective environmental parameters COD, TOC, BOD5, UV254 and UV280 (UV absorbance at 254 nm and 280 nm, representing aromatic and unsaturated moieties, respectively) were followed during ozonation. Changes in the biodegradability of the tannins were evaluated in terms of BOD5 measurements conducted before and after ozonation. In addition, activated sludge inhibition tests employing heterotrophic biomass were run to elucidate the inhibitory effect of raw and ozonated textile tannins towards activated sludge biomass. Partial oxidation (45% COD removal at an ozone dose of 750 mg O3/L wastewater and pH?=?3.5) of ST was sufficient to achieve elimination of its inhibitory effect towards heterotrophic biomass and acceptable biodegradability improvement, whereas the inhibitory effect and biodegradability of NT could not be reduced via ozonation under the same reaction conditions. 相似文献
7.
Jana van Rooyen Senay Simsek Samson A. Oyeyinka Marena Manley 《Comprehensive Reviews in Food Science and Food Safety》2023,22(3):2292-2309
Bread dough and bread are dispersed systems consisting of starch polymers that interact with other flour components and added ingredients during processing. In addition to gluten proteins, starch impacts the quality characteristics of the final baked product. Wheat starch consists of amylose and amylopectin organized into alternating semicrystalline and amorphous layers in granules that vary in size and are embedded in the endosperm protein matrix. Investigation of the molecular movement of protons in the dough system provides a comprehensive insight into granular swelling and amylose leaching. Starch interacts with water, proteins, amylase, lipids, yeast, and salt during various stages of breadmaking. As a result, the starch polymers within the produced crumb and crust, together with the rate of retrogradation and staling due to structural reorganization, moisture migration, storage temperature, and relative humidity determines the final product's textural perception. This review aims to provide insight into wheat starch composition and functionality and critically review recently published research results with reference to starch structure–function relationship and factors affecting it during dough formation, fermentation, baking, cooling, and storage of bread. 相似文献
8.
9.
The identification of foodborne microorganisms and their endospores in food products are important for food safety. The present work compares Bacillus (Bacillus licheniformis, Bacillus circulans and Bacillus subtilis) and Micrococcus (Micrococcus luteus) species with Fourier transform infrared (FTIR) spectroscopy. Our results show that there are several characteristic peaks belonging to both the Micrococcus and Bacillus species which can be used for the identification of these foodborne bacteria and their endospores. For Micrococcus species, a new band was observed at 1338 cm−1 which may be due to acetate oxidation via the carboxylic acid cycle. The bands at 1313 cm−1 and 1256 cm−1 can be explained by an exopolymer formation and the other bands at 1074 cm−1 and 550 cm−1, may be due to the glycogen-like storage material in Micrococcus spp. There are also characteristic peaks at 993 cm−1 and 801 cm−1 for these bacterial species. Different Bacillus species also showed characteristic peaks at 1000–500 cm−1 region. Dipicolinic acid (DPA) bands at ∼728 cm−1 and ∼703 cm−1 seen only in B. circulans were the marker of an endospore formation. 相似文献
10.
Simsek Mehmet Ulvi Yildirim Okay Feyza Ozdemir Suat 《The Journal of supercomputing》2021,77(8):8563-8592
The Journal of Supercomputing - With the recent developments in Internet of Things (IoT), the number of sensors that generate raw data with high velocity, variety, and volume is tremendously... 相似文献