To explore the platelet activation status before and after coronary artery stent implantation at different timepoints.The contents of CD62P (soluble P-selectin) and PAC-1 (platelet glycoprotein GPIIb/IIIa fibrinogen receptor) in patients after coronary stent implantation were detected by flow cytometry (FCM) before, immediately after surgery, postoperative 2, 4, 6 and 24 h in peripheral blood.In 65 cases, the levels of CD62P[40.63(25.14-51.01)%] and PAC-1[36.59(20.37-48.41)%] immediately after surgery were significantly higher than their preoperative values [14.79 (9.85-26.66) %, 13.99(11.42-30.133)%] (P < 0.05). And the postoperative levels of 2 h [8.64(4.48-15.67)%, 12.64(6.45-18.83)%], 4 h [7.91(4.56-12.94)%, 12.81(6.89-18.66)%], 6 h [6.53(4.12-9.27)%, 9.43(5.27-15.65)%] and 24 h [6.28(4.36-9.63)%, 10.38(4.63-18.11)%] decreased significantly versus their preoperative values (P < 0.05).Stenting of coronary endothelial damage within 2h may enhance platelet activation and boost the risk of thrombosis.
The effects of water stress and re-watering on plasma treatment,transpiration rate,stomatal conductance and output of summer maize are studied in this paper.The results show that Pn and Tr and other physiological indexes have a certain effect on maize of Gs daily.Different water treatment peak value is influenced by water stress.Gs,Trand Pn present a typical single-peak curve and the peak value appears at about twelve o'clock.The leaf function recovery rate of maize after water recovery is related to water stress and moderate water stress recovery rate is the fastest while that of severe water stress is the slowest.From seedling stage to teaseling stage,all the chlorophyll by different water treatments is on the rise and the level of chlorophyll decreases with increasing content of stress,but that declines slowly at the beginning of watery stage and the relative content of chlorophyll of water treatment is higher than that of others.An analysis of daily water consumption during all the maize stages and the daily increase of leaf area shows that they have a second-order correlation eqation.
The continuous growth in building decoration activities has led to significant energy and material consumption, increasing carbon emissions in the construction sector. Existing literature frequently overlooks the carbon impact of building decorations. This study employs the life cycle assessment (LCA) method to quantify the carbon emissions associated with building decorations across five typic building types: residential, hospital, educational, sports cultural, and office buildings. Data were gathered using a mix of field investigations, document reviews, and semi-structured interviews, ensuring comprehensive coverage of all life cycle stages. The results reveal that carbon emission intensities of the studied building decorations ranged from 70.01 to 298.79 kg CO2 eq/m2, with the lowest emissions found in educational buildings and the highest in sports and cultural buildings. The decoration material production stage consistently emerges as the major contributor to emissions, accounting for over 50% of the life cycle of carbon emissions across all building types. The transportation stage also represents a significant share, contributing 18.6% to 24.5% across the building types. It also indicates that ceiling engineering as well as wall and column engineering are the primary carbon emission sources in terms of decoration activities. This study systematically compares the carbon emission characteristics of building decorations across multiple building types, addressing a gap that has been largely overlooked in the existing literature. It highlights the key sources of carbon emissions and proposes targeted mitigation strategies. The findings also suggest future research directions, including the application of innovative low-carbon materials, advanced construction technologies, and optimization of logistics. These insights lay a solid foundation for future low-carbon design and construction practices within the building sector.
Watermark bar code is one of the latest anti-counterfeiting technologies, which is applicable to the security of various financial documents, especially banknotes. With the machine-readable watermark bar code, we can not only distinguish the genuine from the fake, but also recognize different face values of banknotes. So it is necessary to develop an effective method to read it. With watermark bar codes embedded in euro banknotes as samples, we design a system for watermark bar code recognition based on light transmission theory. An 808nm LD serves as light source. By receiving the transmitted light from behind the banknote with a high-speed photodetector, light transmission curves in different parts of different face value euro banknotes are obtained and analyzed in order to get the unique characteristic of watermark bar code. The correlation coefficient is then introduced for two reasons. For one thing, the high correlation coefficient derived from the light transmission curves shows the coherence of vertically placed watermark bar code area in different horizontal parts of the same face value banknote, which testifies the consistency and repeatability of the experiment. For another, the low correlation coefficient shows the irrelevance of watermark bar code area and other area of banknotes. What's more, it also shows the difference of watermark bar code area of different face value banknotes. As a result, the machine-readable watermark bar code is made the unique characteristic of certain face value banknotes, which can distinguish them from both the counterfeit ones and other face value genuine banknotes.
The determination method of total boron in amorphous boron powder is studied.The sample was digested in mixture of sulphuric and nitric acid with distillation.Methyl red-bromocresol green mixture indicator and phenolphthalein indicator of ethanol are used as titration indicator,by the reaction between free state boric acid and mannitol in solution,use NaOH standard solution to titrate mannitol-boric acid complex.The recovery rate is between 96.29% ～ 98.98% and the relative standard deviation(RSD) is between 0.80%～1.50%.The results obtained comply with the American military standard.The method is simpler,more convenient and faster.
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