The accurate release of a large amount FSH and LH caused by flare-up can be used not only for controlled ovary hyperstimulation for poor responders,but also for ovulation induction of PCOS patients as well as to preve...The accurate release of a large amount FSH and LH caused by flare-up can be used not only for controlled ovary hyperstimulation for poor responders,but also for ovulation induction of PCOS patients as well as to prevent multiple follicles development,multiple gestation and ovary hyperstimulation.Details should be paid attention to while adopting the flare-up protocol,in order to take it’s advantages and avoid disadvantages.展开更多
AIM:To examine the feasibility of predicting the flareup of ulcerative colitis (UC) before symptoms emerge using the immunochemical fecal occult blood test (IFOBT).METHODS:We prospectively measured fecal hemoglobin co...AIM:To examine the feasibility of predicting the flareup of ulcerative colitis (UC) before symptoms emerge using the immunochemical fecal occult blood test (IFOBT).METHODS:We prospectively measured fecal hemoglobin concentrations in 78 UC patients using the I-FOBT every 1 or 2 mo.RESULTS:During a 20 mo-period,823 fecal samples from 78 patients were submitted.The median concentration of fecal hemoglobin was 41 ng/mL (range:0-392 500 ng/mL).There were three types of patients with regard to the correlation between I-FOBT and patient symptoms;the synchronous transition type with symptoms (44 patients),the unrelated type withsymptoms (19 patients),and the flare-up predictive type (15 patients).In patients with the flare-up predictive type,the values of I-FOBT were generally low during the study period with stable symptoms.Two to four weeks before the flare-up of symptoms,the I-FOBT values were high.Thus,in these patients,I-FOBT could predict the flare-up before symptoms emerged.CONCLUSION:Flare-up could be predicted by I-FOBT in approximately 20% of UC patients.These results warrant periodical I-FOBT in UC patients.展开更多
Flare-induced signals in polarization measurements which were manifested as apparent polarity reversal in magnetograms have been reported since 1981. We are motivated to further quantify the phenomenon by asking two q...Flare-induced signals in polarization measurements which were manifested as apparent polarity reversal in magnetograms have been reported since 1981. We are motivated to further quantify the phenomenon by asking two questions： can we distinguish the flare-induced signals from real magnetic changes during flares, and what we can learn about flare energy release from the flare-induced signals？ We select the X2.6 flare that occurred on 2005 January 15, for further study. The flare took place in NOAA active region （AR） 10720 at approximately the central meridian, which makes the interpretation of the vector magnetograms less ambiguous. We have identified that flare-induced signals during this flare appeared in six zones. The zones are located within an average distance of 5 Mm from their weight center to the main magnetic neutral line, have an average size of （0.6±0.4） ×10^17 cm^2, duration of 13±4 min, and flux density change of 181±125 G in the area of reversed polarity. The following new facts have been revealed by this study： （1） the flare-induced signal is also seen in the transverse magnetograms but with smaller magnitude, e.g., about 50 G; （2） the flare-induced signal mainly manifests itself as apparent polarity reversal, but the signal starts and ends as a weakening of flux density; （3） The flare-induced signals appear in phase with the peaks of hard X-ray emission as observed by the Ramaty High Energy Solar Spectroscopic Imager （RHESSI）, and mostly trace the position of RHESSI hard X-ray footpoint sources. （4） in four zones, it takes place cotemporally with real magnetic changes which persist after the flare. Only for the other two zones does the flux density recover to the pre-flare level immediately after the flare. The physical implications of the flare-induced signal are discussed in view of its relevance to the non-thermal electron precipitation and primary energy release in the flare.展开更多
Using the observational data of the solar radio spectrometer with a broad bandwidth of the Chinese National Astronomical Observatories (CNAO), the Nobeyama Radio Heliograph (NoRH) and Polarimeters (NoRP), YOHKOH and S...Using the observational data of the solar radio spectrometer with a broad bandwidth of the Chinese National Astronomical Observatories (CNAO), the Nobeyama Radio Heliograph (NoRH) and Polarimeters (NoRP), YOHKOH and SOHO satellites, it is found that there are two characteristics in an ×3.3 flare event associated with coronal mass ejection (CME). (i) X-ray and EUV loop interaction and evolution appeared evidently in corona, followed by the formation of a twisted loop structure, which is consistent with the theoretical calculations of Amari et al. (1999a,b) for the origin of flare-CME events. (ii) The slow frequency drift was shown in the radio observa- tions, corresponding to the relevant movement of the radio source observed by NoRH, at a speed of several tens kilometers per second, which may be associated with the speed of the shock waves resulting from the CME.展开更多
针对常年处于高温高腐蚀作业环境中的浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)的大型火炬塔,采用全尺度热喷铝涂层进行保护。介绍火炬塔的分片划分方法,从总装支撑布置、总装流程和注意事项等方面论述火...针对常年处于高温高腐蚀作业环境中的浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)的大型火炬塔,采用全尺度热喷铝涂层进行保护。介绍火炬塔的分片划分方法,从总装支撑布置、总装流程和注意事项等方面论述火炬塔总装,并归纳全尺度热喷铝涂层外场修补施工要求。所提出的建造工艺可大幅减少全尺度热喷铝涂层外场修补施工,有效提高环境经济效益。展开更多
文摘The accurate release of a large amount FSH and LH caused by flare-up can be used not only for controlled ovary hyperstimulation for poor responders,but also for ovulation induction of PCOS patients as well as to prevent multiple follicles development,multiple gestation and ovary hyperstimulation.Details should be paid attention to while adopting the flare-up protocol,in order to take it’s advantages and avoid disadvantages.
文摘AIM:To examine the feasibility of predicting the flareup of ulcerative colitis (UC) before symptoms emerge using the immunochemical fecal occult blood test (IFOBT).METHODS:We prospectively measured fecal hemoglobin concentrations in 78 UC patients using the I-FOBT every 1 or 2 mo.RESULTS:During a 20 mo-period,823 fecal samples from 78 patients were submitted.The median concentration of fecal hemoglobin was 41 ng/mL (range:0-392 500 ng/mL).There were three types of patients with regard to the correlation between I-FOBT and patient symptoms;the synchronous transition type with symptoms (44 patients),the unrelated type withsymptoms (19 patients),and the flare-up predictive type (15 patients).In patients with the flare-up predictive type,the values of I-FOBT were generally low during the study period with stable symptoms.Two to four weeks before the flare-up of symptoms,the I-FOBT values were high.Thus,in these patients,I-FOBT could predict the flare-up before symptoms emerged.CONCLUSION:Flare-up could be predicted by I-FOBT in approximately 20% of UC patients.These results warrant periodical I-FOBT in UC patients.
基金supported by the National Natural Science Foundation of China (10873020,10703007,G10573025, 40674081and 10603008)the CAS Project KJCX2-YW-T04the National Basic Research Program of China (G2006CB806303)
文摘Flare-induced signals in polarization measurements which were manifested as apparent polarity reversal in magnetograms have been reported since 1981. We are motivated to further quantify the phenomenon by asking two questions： can we distinguish the flare-induced signals from real magnetic changes during flares, and what we can learn about flare energy release from the flare-induced signals？ We select the X2.6 flare that occurred on 2005 January 15, for further study. The flare took place in NOAA active region （AR） 10720 at approximately the central meridian, which makes the interpretation of the vector magnetograms less ambiguous. We have identified that flare-induced signals during this flare appeared in six zones. The zones are located within an average distance of 5 Mm from their weight center to the main magnetic neutral line, have an average size of （0.6±0.4） ×10^17 cm^2, duration of 13±4 min, and flux density change of 181±125 G in the area of reversed polarity. The following new facts have been revealed by this study： （1） the flare-induced signal is also seen in the transverse magnetograms but with smaller magnitude, e.g., about 50 G; （2） the flare-induced signal mainly manifests itself as apparent polarity reversal, but the signal starts and ends as a weakening of flux density; （3） The flare-induced signals appear in phase with the peaks of hard X-ray emission as observed by the Ramaty High Energy Solar Spectroscopic Imager （RHESSI）, and mostly trace the position of RHESSI hard X-ray footpoint sources. （4） in four zones, it takes place cotemporally with real magnetic changes which persist after the flare. Only for the other two zones does the flux density recover to the pre-flare level immediately after the flare. The physical implications of the flare-induced signal are discussed in view of its relevance to the non-thermal electron precipitation and primary energy release in the flare.
基金the National Natural Science Foundation of China (Grant No. 19833050) the "973" Program (Grant No. G2000078403).
文摘Using the observational data of the solar radio spectrometer with a broad bandwidth of the Chinese National Astronomical Observatories (CNAO), the Nobeyama Radio Heliograph (NoRH) and Polarimeters (NoRP), YOHKOH and SOHO satellites, it is found that there are two characteristics in an ×3.3 flare event associated with coronal mass ejection (CME). (i) X-ray and EUV loop interaction and evolution appeared evidently in corona, followed by the formation of a twisted loop structure, which is consistent with the theoretical calculations of Amari et al. (1999a,b) for the origin of flare-CME events. (ii) The slow frequency drift was shown in the radio observa- tions, corresponding to the relevant movement of the radio source observed by NoRH, at a speed of several tens kilometers per second, which may be associated with the speed of the shock waves resulting from the CME.
文摘针对常年处于高温高腐蚀作业环境中的浮式生产储卸油装置(Floating Production Storage and Offloading,FPSO)的大型火炬塔,采用全尺度热喷铝涂层进行保护。介绍火炬塔的分片划分方法,从总装支撑布置、总装流程和注意事项等方面论述火炬塔总装,并归纳全尺度热喷铝涂层外场修补施工要求。所提出的建造工艺可大幅减少全尺度热喷铝涂层外场修补施工,有效提高环境经济效益。
