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991.
With the rapid development of Internet, it is increasingly convenient to obtain real-time traffic condition information, which has greatly stimulated the improvement of urban traffic guidance. Traffic conditions are generally divided into four grades in the existing network platform, which are expressed in different colours. The understanding of traffic condition is still at the level of abstract senses. Therefore, it is difficult to grasp the characteristics of urban traffic. To this end, a new idea is proposed in this paper, and the new idea is to study the urban traffic characteristics based on real-time traffic condition information extraction with image identification technology. With this method, we can not only quantify the abstract traffic condition information, but also solve the loss of traffic condition information. In addition, an instance is analysed in this paper, it shows that it can provide references for urban traffic organization management very well. 相似文献
992.
Xesús Feás José Pires María Letícia Estevinho Antonio Iglesias José Pedro Pinto De Araujo 《International Journal of Food Science & Technology》2010,45(6):1255-1262
Honey legislation has been addressed to establish the minimum marketing level of the product and the need for consumer protection through correct denominations. Research oriented toward assessment of floral origin and physicochemical properties may increase the commercial value of these products. The characteristics of thirty‐one honeys produced in the Entre‐Douro e Minho region in Portugal were studied. Pollen features and some physicochemical parameters (moisture, ash, pH, free acidity, electrical conductivity, hydroxymethylfurfural contain, apparent sucrose, reducing sugars and diastase activity) were determined. The samples were found to meet international honey specifications. The present study found a linear regression between the ash content of honeys and their specific conductivity. Five samples are listed as Eucalyptus honey, one sample as Citrus honey, and twenty‐five samples as multifloral honeys. Of the total, 87.1% exceeded the quality parameters and should be labelled as ‘virgin’ honey. 相似文献
993.
收集了国内几种汽柴油混合加氢催化剂,对它们的物理性质进行了分析,并对其加氢活性进行了评价,比较了FH-98催化剂、FH-DS催化剂、FH-UDS催化剂、LYT-UDS催化剂和LYT-03催化剂对劣质汽柴油的加氢活性。结果表明:评价的几种催化剂中,在反应条件为:340℃、6.5 MPa、500∶1及1.5 h-1时,LYT-03催化剂对于劣质汽柴油混合加氢的反应活性最高,脱硫率可达96.08%,脱氮率为93.38%。 相似文献
994.
A model of the interaction of a complexly alloyed alloy based on Ni–Cr with a copper–silver brazing alloy is developed and used for estimating the selective affinity of the individual elements of the alloy, in particular Ni, with the elements of the brazing alloy on the atomic level. 相似文献
995.
Vivek K. Bajpai Ajay Sharma Kwang‐Hyun Baek 《International Journal of Food Science & Technology》2013,48(11):2300-2305
This study investigated the antibacterial mechanism of action of the seed essential oil of Eleutherococcus senticosus (ESEO) against foodborne pathogenic bacteria. Preliminarily, the ESEO (1000 μg disc?1) showed potential antibacterial effect as diameter of inhibition zones (12.0 ± 0.2–37.0 ± 2.0 mm) against the tested foodborne pathogens. The MIC and MBC values of ESEO against the tested bacteria were found in the range of 125–500 and 500–1000 μg mL?1, respectively. At MIC concentration, the ESEO had potential inhibitory effect on the cell viability of the tested pathogens. In addition, SEM analysis showed the inhibitory effect of ESEO as confirmed by considerable morphological alterations on the cell wall of B. cereus ATCC 13061 and E. coli O157:H7 ATCC 43889. Moreover, the ESEO revealed its mode of action against foodborne pathogens on membrane integrity as confirmed by release of extracellular ATP, 260‐nm absorbing materials and leakage of potassium ions. These findings confirm that the ESEO can be used as a potential antibacterial agent in food industry to inhibit the growth of various foodborne pathogens. 相似文献
996.
Ligia B. de Almeida‐Muradian Klaus M. Stramm Andreia Horita Ortrud M. Barth Alex da Silva de Freitas Leticia M. Estevinho 《International Journal of Food Science & Technology》2013,48(8):1698-1706
Twenty‐four samples of Apis mellifera honey and twenty‐four samples of Melipona subnitida (Jandaira) honey were collected in the northeast of Brazil. Moisture, hydroxymethylfurfural, free acidity, insoluble solids in water, diastase activity, ashes, electrical conductivity, proteins, lipids, total carbohydrates, energy and sugars were the parameters analysed. The efficiency of the qualitative tests (Fiehe's test, Lugol's reaction, Lund's reaction) was tested. Pollen types and the corresponding plant species were identified in all samples (3 in Apis and 1 in Melipona). Apis mellifera honey samples demonstrated parameters in accordance with the Brazilian Legislation, while the Melipona subnitida honey samples displayed moisture (24.80%) and diastase activity (null) in discordance with the established by the regulation for Apis mellifera honeys. Apis honey samples presented higher values of electric conductivity (284.00 μS cm?1) than the obtained from the Jandaira honey samples (102.77 μS cm?1) as well as a darker colour (26.67 mmPfund) when compared with Jandaira honey (7.00 mmPfund). The concentration of the glucose, fructose and sucrose was higher in the Apis honeys than in the Jandaira honey. The characteristics of the two types of honey were very different, highlighting the need of developing specific legislation for stingless bees' honey. 相似文献
997.
998.
The velocity of an over-burst coal seam is about 1/3 compared to a normal coal seam based on laboratory test results. This
can be considered as a basis to confirm the area of coal and gas burst by seismic exploration technique. Similarly, the simulation
result of the theoretical seismic model shows that there is obvious distinction between over-burst coal and normal coal based
on the coal reflection’s travel-time, energy and frequency. The results from the actual seismic data acquired in the coal
and gas over-burst cases is consistent with that of the laboratory and seismic modeling; that is, in the coal and gas burst
region, seismic reflection travel time is delayed, seismic amplitude is weakened and seismic frequency is reduced. Therefore,
it can be concluded that seismic exploration technique is promising for use in distinguishing coal and gas over-burst regions
based on the variation of seismic reflection travel time, amplitude and frequency.
Supported by the Key Program of National Basic Research Program(973) of China (2006CB202208); the CBM Important Project of
2008ZX05040-003 in China 相似文献
999.
1000.
Nasir Mehmood Khan Tai‐Hua Mu Miao Zhang Jing‐Wang Chen 《International Journal of Food Science & Technology》2013,48(6):1260-1268
The influence of high hydrostatic pressure (HHP) treatment on the physicochemical and emulsifying properties of sweet potato protein (SPP) at various concentrations, e.g. 2%, 4% and 6% (w/v, SPP‐2, SPP‐4 and SPP‐6), was investigated. Significant differences in hydrophobicity, enthalpy of denaturation and solubility were observed (P < 0.05). Emulsifying activity indexes (EAI) of SPP‐2 and SPP‐6 increased at 400 MPa, whereas EAI of all SPP significantly decreased at 600 MPa (P < 0.05). Emulsion stability (ESI) was significantly decreased for SPP‐2 and SPP‐6, while increase in ESI was observed for SPP‐4 above 200 MPa (P < 0.05). SPP‐2 emulsions showed sharp decrease in apparent viscosity with pressure increase, while pseudo plastic flow behaviour was not changed for all of emulsions. Sporamins A and B were well‐adsorbed in pressurised emulsion without displacement. These results suggest that HHP treatment could be used to modify the physicochemical and emulsifying properties of SPP. 相似文献