目的评价腔内剜除法经尿道等离子体前列腺汽化电切术(plasmakinetic enucleation of prostate,PKEP)对良性前列腺增生(benign prostatic hyperplasia,BPH)患者性功能的影响。方法将符合条件的75例患者随机分成常规方法经尿道等离子体前...目的评价腔内剜除法经尿道等离子体前列腺汽化电切术(plasmakinetic enucleation of prostate,PKEP)对良性前列腺增生(benign prostatic hyperplasia,BPH)患者性功能的影响。方法将符合条件的75例患者随机分成常规方法经尿道等离子体前列腺汽化电切术(plasmakinetic raporize of prostate,PKRP)组(35例)及PKEP组(40例),随访两组患者术后6、12个月性欲、勃起功能与射精情况。结果获完整随访的患者PKRP组31例、PKEP组39例。两组患者随访至术后12个月,阴茎勃起功能障碍(ED)的发生率分别为PKRP组3.2%(1/31)、PKEP组5.1%(2/39),逆行射精(RE)的发生率分别为PKRP组51.6%(16/31)、PKEP组23.1%(9/39)。结论 PKRP与PKEP手术对性功能均有一定的影响,两组ED发生率无明显差异,但RE发生率PKEP明显少于PKRP。展开更多
AIM： To determine the fasting plasma carnitine ester in patients with celiac disease. METHODS： We determined the fasting plasma carnitine ester profile using ESI triple quadrupol mass spectrometry in 33 adult patien...AIM： To determine the fasting plasma carnitine ester in patients with celiac disease. METHODS： We determined the fasting plasma carnitine ester profile using ESI triple quadrupol mass spectrometry in 33 adult patients with biopsy-confirmed maturity onset celiac disease maintained on long term gluten free diet. RESULTS： The level of free camibine did not differ as the celiac disease patients were compared with the healthy controls, whereas the acetylcarnitine level was markedly reduced （4.703± 0.205 vs 10.227 ± 0.368 nmol/mL, P〈0.01）. The level of propionylcarnitine was 61.5%, butyrylcarnitine 56.9%, hexanoylcarnitine 75%, octanoylcarnitine 71.1%, octenoylcarnitine 52.1%, decanoylcarnitine 73.1%, cecenoylcarnitine 58.3%, lauroylcarnitine 61.5%, miristoylcarnitine 66.7%, miristoleylcarnitine 62.5% and oleylcarnitine 81.1% in the celiac disease patients compared to the control values, respectively （P〈0.01）. CONCLUSION： The marked decrease of circulating acetylcarnitine with 50-80 % decrease of 11 other carnitine esters shows that the carnitine ester metabolism can be influenced even in clinically asymptomatic and well being adult celiac disease patients, and gluten withdrawal alone does not necessarily normalize all elements of the disturbed carnitine homeostasis.展开更多
Plasma jet has been widely used in supersonic combustor as an effective ignition and combustion assisted method,but currently it is mostly combined with the traditional wall fuel injection method,while the application...Plasma jet has been widely used in supersonic combustor as an effective ignition and combustion assisted method,but currently it is mostly combined with the traditional wall fuel injection method,while the application combined with the central fuel injection method is less.In order to expand the combustion range,the plasma jet was introduced into a strut-cavity combustor with an alternating-wedge.The effects of total pressure of strut fuel injection,total pressure of cavity fuel injection,total pressure of plasma jet injection and plasma jet media on the combustion characteristics were analyzed in supersonic flow by numerical calculations in a three-dimensional domain.The combustion field structure,wall pressure distribution,combustion efficiency and distribution of H2O at the exit of the combustor with different injection conditions were analyzed.The results show that the combustion efficiency decreases with the increase of the strut fuel injection total pressure.However,the combustion area downstream increases when the total pressure of the strut fuel injection increases within the proper range.The combustion range is expanded and the combustion efficiency is improved when the cavity fuel injection total pressure is increased within the range of 0.5−2.0 MPa,but a sharp drop in combustion efficiency can be found due to limited fuel mixing when the total injection pressure of the cavity fuel is excessively increased.With the increased total injection pressure of the plasma jet,the height of the cavity shear layer is raised and the equivalence ratio of the gas mixture in the cavity is improved.When the total pressure of the plasma jet is 1.25 MPa,the combustion efficiency reaches a maximum of 82.1%.The combustion-assisted effect of different plasma jet media is significantly different.When the medium of the plasma jet is O2,the combustion-assisted effect on the combustor is most significant.展开更多
ith the aid of a fibre optical device, the profile of plasma parameters, such as plasma length and noise power spectrum, in a normally enclosed TM 010 cavity was probed. Experimental results show that the physical len...ith the aid of a fibre optical device, the profile of plasma parameters, such as plasma length and noise power spectrum, in a normally enclosed TM 010 cavity was probed. Experimental results show that the physical length of a plasma is linearly related to the microwave power applied and that the profile of noise power spectra varies significantly along the length of a plasma.展开更多
Optical absorption bands at -18772 and -18807 cm-1, previously assigned to A2A-X2H electronic origin band transitions of the linear carbon-chain radicals CsH and CsD, respectively, have been reinvestigated. The spectr...Optical absorption bands at -18772 and -18807 cm-1, previously assigned to A2A-X2H electronic origin band transitions of the linear carbon-chain radicals CsH and CsD, respectively, have been reinvestigated. The spectra have been recorded in direct absorption applying cavity ring-down spectroscopy to a supersonically expanding acetylene/helium plasma. The improved spectra allow deducing a l-CsH upper state spin-orbit coupling constant X=-0.7（3） cm-1 and a A2A lifetime of 1.65=0.3 ps.展开更多
基金Supported by National Natural Science Foundation of China(11105023)Program for New Century Excellent Talents in University(NCET-11-0054)+1 种基金Doctoral Scientific Research Starting Foundation of Liaoning Province of China(20101020)the Fundamental Research Funds for the Central Universities(DUT12LK36)
文摘目的评价腔内剜除法经尿道等离子体前列腺汽化电切术(plasmakinetic enucleation of prostate,PKEP)对良性前列腺增生(benign prostatic hyperplasia,BPH)患者性功能的影响。方法将符合条件的75例患者随机分成常规方法经尿道等离子体前列腺汽化电切术(plasmakinetic raporize of prostate,PKRP)组(35例)及PKEP组(40例),随访两组患者术后6、12个月性欲、勃起功能与射精情况。结果获完整随访的患者PKRP组31例、PKEP组39例。两组患者随访至术后12个月,阴茎勃起功能障碍(ED)的发生率分别为PKRP组3.2%(1/31)、PKEP组5.1%(2/39),逆行射精(RE)的发生率分别为PKRP组51.6%(16/31)、PKEP组23.1%(9/39)。结论 PKRP与PKEP手术对性功能均有一定的影响,两组ED发生率无明显差异,但RE发生率PKEP明显少于PKRP。
基金Supported by the grant of Hungarian Science Foundation OTKA T 35026, T 49589 by the grant of Ministry of Health ETT 325/2003
文摘AIM： To determine the fasting plasma carnitine ester in patients with celiac disease. METHODS： We determined the fasting plasma carnitine ester profile using ESI triple quadrupol mass spectrometry in 33 adult patients with biopsy-confirmed maturity onset celiac disease maintained on long term gluten free diet. RESULTS： The level of free camibine did not differ as the celiac disease patients were compared with the healthy controls, whereas the acetylcarnitine level was markedly reduced （4.703± 0.205 vs 10.227 ± 0.368 nmol/mL, P〈0.01）. The level of propionylcarnitine was 61.5%, butyrylcarnitine 56.9%, hexanoylcarnitine 75%, octanoylcarnitine 71.1%, octenoylcarnitine 52.1%, decanoylcarnitine 73.1%, cecenoylcarnitine 58.3%, lauroylcarnitine 61.5%, miristoylcarnitine 66.7%, miristoleylcarnitine 62.5% and oleylcarnitine 81.1% in the celiac disease patients compared to the control values, respectively （P〈0.01）. CONCLUSION： The marked decrease of circulating acetylcarnitine with 50-80 % decrease of 11 other carnitine esters shows that the carnitine ester metabolism can be influenced even in clinically asymptomatic and well being adult celiac disease patients, and gluten withdrawal alone does not necessarily normalize all elements of the disturbed carnitine homeostasis.
基金Project(51606220)supported by the National Natural Science Foundation of ChinaProject(1194028)supported by the Beijing Natural Science Foundation,China。
文摘Plasma jet has been widely used in supersonic combustor as an effective ignition and combustion assisted method,but currently it is mostly combined with the traditional wall fuel injection method,while the application combined with the central fuel injection method is less.In order to expand the combustion range,the plasma jet was introduced into a strut-cavity combustor with an alternating-wedge.The effects of total pressure of strut fuel injection,total pressure of cavity fuel injection,total pressure of plasma jet injection and plasma jet media on the combustion characteristics were analyzed in supersonic flow by numerical calculations in a three-dimensional domain.The combustion field structure,wall pressure distribution,combustion efficiency and distribution of H2O at the exit of the combustor with different injection conditions were analyzed.The results show that the combustion efficiency decreases with the increase of the strut fuel injection total pressure.However,the combustion area downstream increases when the total pressure of the strut fuel injection increases within the proper range.The combustion range is expanded and the combustion efficiency is improved when the cavity fuel injection total pressure is increased within the range of 0.5−2.0 MPa,but a sharp drop in combustion efficiency can be found due to limited fuel mixing when the total injection pressure of the cavity fuel is excessively increased.With the increased total injection pressure of the plasma jet,the height of the cavity shear layer is raised and the equivalence ratio of the gas mixture in the cavity is improved.When the total pressure of the plasma jet is 1.25 MPa,the combustion efficiency reaches a maximum of 82.1%.The combustion-assisted effect of different plasma jet media is significantly different.When the medium of the plasma jet is O2,the combustion-assisted effect on the combustor is most significant.
文摘ith the aid of a fibre optical device, the profile of plasma parameters, such as plasma length and noise power spectrum, in a normally enclosed TM 010 cavity was probed. Experimental results show that the physical length of a plasma is linearly related to the microwave power applied and that the profile of noise power spectra varies significantly along the length of a plasma.
文摘Optical absorption bands at -18772 and -18807 cm-1, previously assigned to A2A-X2H electronic origin band transitions of the linear carbon-chain radicals CsH and CsD, respectively, have been reinvestigated. The spectra have been recorded in direct absorption applying cavity ring-down spectroscopy to a supersonically expanding acetylene/helium plasma. The improved spectra allow deducing a l-CsH upper state spin-orbit coupling constant X=-0.7（3） cm-1 and a A2A lifetime of 1.65=0.3 ps.
