全文获取类型
收费全文 | 50篇 |
免费 | 2篇 |
专业分类
电工技术 | 3篇 |
化学工业 | 6篇 |
机械仪表 | 1篇 |
建筑科学 | 6篇 |
能源动力 | 1篇 |
轻工业 | 30篇 |
一般工业技术 | 2篇 |
冶金工业 | 1篇 |
原子能技术 | 1篇 |
自动化技术 | 1篇 |
出版年
2021年 | 1篇 |
2018年 | 1篇 |
2017年 | 2篇 |
2013年 | 7篇 |
2012年 | 1篇 |
2011年 | 2篇 |
2010年 | 1篇 |
2009年 | 3篇 |
2007年 | 1篇 |
2005年 | 1篇 |
2002年 | 1篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1992年 | 4篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1989年 | 2篇 |
1988年 | 1篇 |
1987年 | 2篇 |
1985年 | 2篇 |
1976年 | 2篇 |
1973年 | 1篇 |
1971年 | 1篇 |
1970年 | 2篇 |
1969年 | 1篇 |
1968年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有52条查询结果,搜索用时 906 毫秒
1.
Addition of histidine accelerated hydrolysis of fish protein during fermentation in the manufacture of fish sauce and after 4 mo fermentation yielded a product typical of traditional fish sauce. The liquefaction rate of the histidine-treated sauce was faster than that of the control. The degree of hydrolysis was much greater in the histidine-added sauces than in the control. Most amino acids were higher in the histidine sauces compared to commercial patis sauce (as reference). Addition of histidine to the fish mixture during fermentation did not increase the histamine content of the sauces. 相似文献
2.
Adduct formation of 2-thenoyltrifluoroacetonato(tta) lantha-num(III), europium(III), and ytterbium(I II) with α-pheny 1 1 actic, α-methoxy phenyl acetic, salicylic, and o-methoxy benzoic acids in chloroform has been studied by solvent extraction technique. It has been found that 1anthanoid(111) chelates form more stable adducts with these carboxylic acids in the sequence: Yb(tta)3 < Eu(tta) 3 < La(tta) 3. The adduct formation constants as well as the separation factors obtained as the ratio of the constants between a pair of metals are the largest for α-phenyl lactic acid among these acids. The characteristics with α-phenyl 1actic acid would be caused by the action as bidentate unlike benzoic acid derivatives which work as monodentates owing to the internal complexa-tion through hydrogen bonding. 相似文献
3.
Lanthanide(lII) chelates with 1,1,1 -trif luoro-5,5-dimethyl-2,4-hexanedione form adducts with benzilic acid, an a-hydroxycar-boxylic acid, in chloroform. The order of. the adduct formation constants in magnitude is: Lam> Eum> Ybm although it is known that the stability constant of lanthanide(III) complexes with α-hydroxycarboxylic acids in aqueous solutions increases with increasing atomic number. 相似文献
4.
Limonoids in Pummelos [Citrus grandis (L.) Osbeck] 总被引:3,自引:0,他引:3
Juice and seeds from 16 cultivars of mature pummelo fruits were analyzed for limonoid content. Pummelo juice contained an average of 18 ppm limonin and 29 ppm total limonoid glucosides. Compared to other juices, ptmnnelo contained very high concentrations of limonin and very low concentrations of limonoid glucosides. Limonin, nomilin, obacunone and trace amounts of deacetyhromilin were found in pummelo seeds. The 17–β-D-glucopyranoside derivatives (glucosides) of nomilin, nomilinic acid and obacunone were also present. Total limonoid aglycone concentration in the seeds ranged from 773 ppm to 9,900 ppm and total limonoid glucosides ranged from 130 ppm to 1,912 ppm. 相似文献
5.
K. HANADA H. ZUSHI H. IDEI K. NAKAMURA M. ISHIGURO S. TASHIMA E. I. KALINNIKOVA M. SAKAMOTO M. HASEGAWA A. FUJISAWA A. HIGASHIJIMA S. KAWASAKI H. NAKASHIMA H. LIU O. MITARAI T. MAEKAWA 《等离子体科学和技术》2011,13(3):307-311
Both start-up and sustainment of plasma were successfully achieved by fully non-inductive current drive using microwave with a frequency of 8.2 GHz. Plasmas current of 15 kA was implemented for 1 s. Magnetic surface reconstruction exhibited a plasma shape with an aspect ratio of below 1.5. The plasma current was dependent significantly on the launchen microwave power and vertical magnetic field, whiile not affected by the mode of launched wave and the toroidal refractive index. Hard X-ray (HXR) emitted from energetic electrons accelerated by the microwave was observed, and the discharge with a plasma current over 4 kA followed the same trend as the number of photons of 10 to 12 keV. This suggests that the plasma current may be driven by energetic electrons. Based on the experimental conditions, alternative explanations of how the plasma current could be driven are discussed. 相似文献
6.
7.
NORLITA G. SANCEDA TADAO KURATA YOSHIKATSU SUZUKI NOBUHIKO ARAKAWA 《Journal of food science》1992,57(5):1120-1135
Volatile acids of aerobically and anaerobically fermented fish sauces were investigated using GC and GC-MS. There was no significant difference in pH values of the two types of sauces. Volatile acids found in the aerobically fermented sauce had concentrations significantly higher than the anaerobically fermented one. Sensory evaluation revealed that the aroma of the anaerobically fermented sauce was a little sweet, less acidic and less rancid than the aerobically made sauce which was sharp, and cheesy. Thus, fermentation under anaerobic condition altered the aroma quality of the sauce during manufacturing, yielding an acceptable product. 相似文献
8.
Abstracts are not published in this journal
This revised version was published online in November 2006 with corrections to the Cover Date. 相似文献
9.
Nomilin acetyl-lyase, an enzyme responsible for the conversion of bitter nomilin to nonbitter obacunone was purified from cell-free extracts of Corynebacterium fuscians by (NH4)2SO4 precipitation, followed by HPLC gel filtration and ion exchange chromatography. The electrophoretically pure preparation represented a 1050-fold increase in specific activity with a recovery of 38%. The enzyme, (MW 90,000) required sulfhydryl groups for its catalysis, had a pH optimum of 8.5, a Km of 38.1 PM, and a Vmax of 4.83 μmoles/min. Obacunone A-ring lactone hydrolase, which catalyzes the conversion of obacunone to obacunoate, was also purified from the extract by HPLC gel filtration. 相似文献
10.
YUKA HASEGAWA YOSHIMICHI OHKI KAORI FUKUNAGA MAYA MIZUNO KENSUKE SASAKI 《Electrical Engineering in Japan》2017,198(3):11-18
Nowadays, trials to use even higher frequencies are pursued to realize high‐speed wireless communications. In order to respond to such a trend, dielectric properties of insulating polymers at high frequencies have to be clarified, although the importance of clarifying low‐frequency properties is still very high, especially for use as high‐voltage insulators. In this regard, complex permittivity spectra from 10 mHz to 4.0 THz were obtained for various insulating polymers. The spectra obtained in the very wide frequency range are important, because they can be a valuable database and they provide various pieces of important information on dielectric characteristics. 相似文献