Objective: to study the correlation between the preeclampsia IgG antibody A(B) titer and hemolytic disease of the newborn (HDN). Methods: from February 2018 to February 2020, the clinical data of 36 pregnant women wit...Objective: to study the correlation between the preeclampsia IgG antibody A(B) titer and hemolytic disease of the newborn (HDN). Methods: from February 2018 to February 2020, the clinical data of 36 pregnant women with blood type not blood O in our hospital were retrospectively analyzed, and the IgG anti-A (B) titer was measured and the relationship with HDN was observed. Results: in 36 cases of blood O pregnant women, IgG antibody A(B) titer less than 1:64 was 41.67%, HDN production rate was 6.67%;IgG antibody A(B) titer equal to 1:64 was 19.44%, and HDN production rate was 28.57%. IgG antibody A(B) titer = 1:128 was 13.89%, and HDN production rate was 40.00%. The titer of IgG against A(B) was 1:256, which was 16.67%, and the HDN production rate was 50.00%. The titer of IgG anti-A (B) was more than or equal to 1:552, 8.33%, and the HDN production rate was 66.67%. The titer of IgG anti-A (B) was positively correlated with the HDN production rate, and the difference was very significant (P < 0.05). Conclusion: the pregnant female IgG anti-A (B) titer of blood O is closely related to HDN. The higher the IgG anti-A (B) titer is, the more people suffer from HDN. Clinical should be to IgG anti-a (B) titer high pregnant women and fetus, newborn increased observation, as early as possible to take intervention measures.展开更多
We report the fabrication and photocatalytic property of a composite of C/CaFe2O4nanorods(NRs)in an effort to reveal the influence of carbon modification.It is demonstrated that the photocatalytic degradation activity...We report the fabrication and photocatalytic property of a composite of C/CaFe2O4nanorods(NRs)in an effort to reveal the influence of carbon modification.It is demonstrated that the photocatalytic degradation activity is dependent on the mass ratio of C to CaFe2O4.The optimal carbon content is determined to be58wt%to yield a methylene blue(MB)degradation rate of0.0058min.1,which is4.8times higher than that of the pristine CaFe2O4NRs.The decoration of carbon on the surface of CaFe2O4NRs improves its adsorption capacity of the MB dye,which is specifically adsorbed on the surface as a monolayer according to the adsorption isotherm analysis.The trapping experiments of the reactive species indicate that superoxide radicals(.O2)are the main active species responsible for the removal of MB under visible‐light irradiation.Overall,the unique feature of carbon coating enables the efficient separation and transfer of photogenerated electrons and holes,strengthens the adsorption capacity of MB,and improves the light harvesting capability,hence enhancing the overall photocatalytic degradation of MB.展开更多
目的基于“紧急输血由急诊科授权医生启动,输血科15 min内发放不超过4 U O型未交叉配血悬浮红细胞”的单中心临床实践,了解该实践背景下紧急输O型未交叉配血悬浮红细胞策略的实施现状,为血液管理提供参考。方法回顾性分析2019年8月—202...目的基于“紧急输血由急诊科授权医生启动,输血科15 min内发放不超过4 U O型未交叉配血悬浮红细胞”的单中心临床实践,了解该实践背景下紧急输O型未交叉配血悬浮红细胞策略的实施现状,为血液管理提供参考。方法回顾性分析2019年8月—2024年4月四川大学华西医院紧急输O型血患者病例信息,包括申请紧急输血原因、输血申请送达输血科所需时间、输血科血液发放所需时间、患者输血前后总胆红素、间接胆红素、乳酸脱氢酶、患者血型、病情转归等。结果2019年8月—2024年4月本院申请紧急输O型血的患者有39例,共输注未经交叉配血的O型悬浮红细胞90 U。患者均为Rh(D)阳性,其中A型14例;B型6例;O型16例;AB型2例;暂无法定型1例,抗体筛查阳性2例,紧急输O型血的患者中车祸伤是主要原因,占46%(18/39),死亡率51.28%(20/39),死亡原因均为原发伤,无溶血性输血反应的临床指征:输血前后总胆红素(TBTL)、间接胆红素(IBIL)、乳酸脱氢酶(LDH)无统计学差异,P值均>0.05。患者从入院到输血科接收输血申请单和输血科从收到申请单到血液发放的中位时间分别为30.20 min和5.30 min。结论基于“紧急输血由急诊科授权医生启动,输血科15 min内发放不超过4 U O型未交叉配血悬浮红细胞”的单中心临床实践具有安全性,但申请紧急输O型血流程中在输血申请单送达输血科之前有优化空间。展开更多
Precipitation response of a recently developed β-type Ti-25Nb-2Mo-4Sn alloy （wt%） during aging was investigated in detail. Experimental results indicate that the metastable co or equilibrium α phase can form alter...Precipitation response of a recently developed β-type Ti-25Nb-2Mo-4Sn alloy （wt%） during aging was investigated in detail. Experimental results indicate that the metastable co or equilibrium α phase can form alternatively even under the same aging condition, depending on the condition prior to the aging, i.e., solution treatment or severe cold rolling. This provides, for the first time, the direct evidence for the competition between ω and α in aged β-type Ti alloys. This peculiar aging response is found to be closely related to high-density dislocations and grain boundaries which suppress the formation of ω but favor the precipitation of fine α phase.展开更多
During the developing phase of central Pacific El Nio(CPEN), more frequent TC genesis over the northwest quadrant of the western North Pacific(WNP) is attributed to the horizontal shift of environmental vorticity fi...During the developing phase of central Pacific El Nio(CPEN), more frequent TC genesis over the northwest quadrant of the western North Pacific(WNP) is attributed to the horizontal shift of environmental vorticity field.Such a northwestward shift resembles the La Nia composite, even though factors that cause the shift differ(in the La Nia case the relative humidity effect is crucial). Greater reduction of TC frequency over WNP happened during the decaying phase of eastern Pacific El Nio(EPEN) than CPEN, due to the difference of the anomalous Philippine Sea anticyclone strength. The TC genesis exhibits an upward(downward) trend over the northern(southern) part of the WNP,which is linked to SST and associated circulation changes through local and remote effects.展开更多
Modeling log-mortality rates on O-U type processes and forecasting life expectancies are explored using U.S. data. In the classic Lee-Carter model of mortality, the time trend and the age-specific pattern of mortality...Modeling log-mortality rates on O-U type processes and forecasting life expectancies are explored using U.S. data. In the classic Lee-Carter model of mortality, the time trend and the age-specific pattern of mortality over age group are linear, this is not the feature of mortality model. To avoid this disadvantage, O-U type processes will be used to model the log-mortality in this paper. In fact, this model is an AR(1) process, but with a nonlinear time drift term.Based on the mortality data of America from Human Mortality database(HMD), mortality projection consistently indicates a preference for mortality with O-U type processes over those with the classical Lee-Carter model. By means of this model, the low bounds of mortality rates at every age are given. Therefore, lengthening of maximum life expectancies span is estimated in this paper.展开更多
AIM To examine the changes of the ghrelin/ghrelin O-acyltransferase(GOAT) axis and the mammalian target of rapamycin(m TOR) pathway in the hypothalamus after sleeve gastrectomy.METHODS A total of 30 obese type-2 diabe...AIM To examine the changes of the ghrelin/ghrelin O-acyltransferase(GOAT) axis and the mammalian target of rapamycin(m TOR) pathway in the hypothalamus after sleeve gastrectomy.METHODS A total of 30 obese type-2 diabetes Sprague-Dawley(SD) rats, 6 wk of age, fed with high-sugar and highfat fodder for 2 mo plus intraperitoneal injection of streptozotocin were randomly divided into three groups: non-operation group(S0 group, n = 10), sham operation group(Sh group, n = 10) and sleeve gastrectomy group(SG group, n = 10). Data of body mass, food intake, oral glucose tolerance test(OGTT), acylated ghrelin(AG) and total ghrelin(TG) were collected and measured at the first day(when the rats were 6 wk old), preoperative day 3 and postoperative week 8. The m RNA expression of preproghrelin, GOAT and neuropeptide Y(NPY), and protein expression of ghrelin, GOAT, GHSR and the m TOR pathway(p-Akt, p-m TOR and p-S6) were measured in the hypothalamus.RESULTS SG can significantly improve metabolic symptoms by reducing body mass and food intake. The obese rats showed lower serum TG levels and no change in AG, but the ratio of AG/TG was increased. When compared with the S0 and Sh groups, the SG group showed decreased TG(1482.03 ± 26.55, 1481.49 ± 23.30 and 1206.63 ± 52.02 ng/L, respectively, P < 0.05), but unchanged AG(153.06 ± 13.74, 155.37 ± 19.30 and 144.44 ± 16.689 ng/L, respectively, P > 0.05). As a result, the ratio of AG/TG further increased in the SG group(0.103 ± 0.009, 0.105 ± 0.013 and 0.12 ± 0.016, respectively, P < 0.05). When compared with the S0 group, SG suppressed m RNA and protein levels of preproghrelin(0.63 ± 0.12 vs 0.5 ± 0.11, P < 0.05) and GOAT(0.96 ± 0.09 vs 0.87 ± 0.08, P < 0.05), but did not change NPY m RNA expression(0.61 ± 0.04 vs 0.65 ± 0.07, P > 0.05) in the hypothalamus. The protein levels of p-Akt, p-m TOR and p-S6 were higher in the SG group, which indicated that the hypothalamic m TOR pathway was activated after SG at the postoperative week 8. CONCLUSION The reduction of ghrelin expression and activation of the m TOR pathway might have opposite effects on food intake, as SG improves obesity and T2 DM.展开更多
Polyoxometalates（POMs） with Cd-coordination complexes acting as supporting units are rarely reported. The linkage of the supporting units with inorganic building block（polyanion） is generally established on termin...Polyoxometalates（POMs） with Cd-coordination complexes acting as supporting units are rarely reported. The linkage of the supporting units with inorganic building block（polyanion） is generally established on terminal O-atoms, but scarcely via bridging O-atoms. By introducing liquid small organic molecule（pyridine, C5NH5） as assistant ＂structure-directing agent＂, we obtained a novel organic-inorganic hybrid polytungstate,（Hpy）4[Cd（phen）2（P2W18O62）]·nH2O（1, n ≈ 3, py = pyridine, phen = 1,10-phenanthroline）, under hydrothermal conditions. The single-crystal X-ray diffraction analysis shows that 1 is the first compound containing an asymmetric heteropolyanion, [Cd（phen）2（P2W18O62）]4–, a Wells-Dawson-type polyanion monosupported by Cd-coordination complex via di-bridging O-atoms.展开更多
文摘Objective: to study the correlation between the preeclampsia IgG antibody A(B) titer and hemolytic disease of the newborn (HDN). Methods: from February 2018 to February 2020, the clinical data of 36 pregnant women with blood type not blood O in our hospital were retrospectively analyzed, and the IgG anti-A (B) titer was measured and the relationship with HDN was observed. Results: in 36 cases of blood O pregnant women, IgG antibody A(B) titer less than 1:64 was 41.67%, HDN production rate was 6.67%;IgG antibody A(B) titer equal to 1:64 was 19.44%, and HDN production rate was 28.57%. IgG antibody A(B) titer = 1:128 was 13.89%, and HDN production rate was 40.00%. The titer of IgG against A(B) was 1:256, which was 16.67%, and the HDN production rate was 50.00%. The titer of IgG anti-A (B) was more than or equal to 1:552, 8.33%, and the HDN production rate was 66.67%. The titer of IgG anti-A (B) was positively correlated with the HDN production rate, and the difference was very significant (P < 0.05). Conclusion: the pregnant female IgG anti-A (B) titer of blood O is closely related to HDN. The higher the IgG anti-A (B) titer is, the more people suffer from HDN. Clinical should be to IgG anti-a (B) titer high pregnant women and fetus, newborn increased observation, as early as possible to take intervention measures.
基金supported by the National Natural Science Foundation of China(21503100)Natural Science Foundation of Jiangxi Province(20161BAB213071,20151BAB213010)+1 种基金Project of Education Department of Jiangxi Province(GJJ150325)Sponsored Program for Cultivating Youths of Outstanding Ability in Jiangxi Normal University~~
文摘We report the fabrication and photocatalytic property of a composite of C/CaFe2O4nanorods(NRs)in an effort to reveal the influence of carbon modification.It is demonstrated that the photocatalytic degradation activity is dependent on the mass ratio of C to CaFe2O4.The optimal carbon content is determined to be58wt%to yield a methylene blue(MB)degradation rate of0.0058min.1,which is4.8times higher than that of the pristine CaFe2O4NRs.The decoration of carbon on the surface of CaFe2O4NRs improves its adsorption capacity of the MB dye,which is specifically adsorbed on the surface as a monolayer according to the adsorption isotherm analysis.The trapping experiments of the reactive species indicate that superoxide radicals(.O2)are the main active species responsible for the removal of MB under visible‐light irradiation.Overall,the unique feature of carbon coating enables the efficient separation and transfer of photogenerated electrons and holes,strengthens the adsorption capacity of MB,and improves the light harvesting capability,hence enhancing the overall photocatalytic degradation of MB.
文摘目的基于“紧急输血由急诊科授权医生启动,输血科15 min内发放不超过4 U O型未交叉配血悬浮红细胞”的单中心临床实践,了解该实践背景下紧急输O型未交叉配血悬浮红细胞策略的实施现状,为血液管理提供参考。方法回顾性分析2019年8月—2024年4月四川大学华西医院紧急输O型血患者病例信息,包括申请紧急输血原因、输血申请送达输血科所需时间、输血科血液发放所需时间、患者输血前后总胆红素、间接胆红素、乳酸脱氢酶、患者血型、病情转归等。结果2019年8月—2024年4月本院申请紧急输O型血的患者有39例,共输注未经交叉配血的O型悬浮红细胞90 U。患者均为Rh(D)阳性,其中A型14例;B型6例;O型16例;AB型2例;暂无法定型1例,抗体筛查阳性2例,紧急输O型血的患者中车祸伤是主要原因,占46%(18/39),死亡率51.28%(20/39),死亡原因均为原发伤,无溶血性输血反应的临床指征:输血前后总胆红素(TBTL)、间接胆红素(IBIL)、乳酸脱氢酶(LDH)无统计学差异,P值均>0.05。患者从入院到输血科接收输血申请单和输血科从收到申请单到血液发放的中位时间分别为30.20 min和5.30 min。结论基于“紧急输血由急诊科授权医生启动,输血科15 min内发放不超过4 U O型未交叉配血悬浮红细胞”的单中心临床实践具有安全性,但申请紧急输O型血流程中在输血申请单送达输血科之前有优化空间。
基金financially supported by the National Natural Science Foundation of China(Nos.51271010 and 21301075)the Senior Intellectuals Fund of Jiangsu University(13JDG098)
文摘Precipitation response of a recently developed β-type Ti-25Nb-2Mo-4Sn alloy （wt%） during aging was investigated in detail. Experimental results indicate that the metastable co or equilibrium α phase can form alternatively even under the same aging condition, depending on the condition prior to the aging, i.e., solution treatment or severe cold rolling. This provides, for the first time, the direct evidence for the competition between ω and α in aged β-type Ti alloys. This peculiar aging response is found to be closely related to high-density dislocations and grain boundaries which suppress the formation of ω but favor the precipitation of fine α phase.
基金MOST 103-2111-M-845-001NSF grant AGS-1106536+1 种基金ONR grant N00014-0810256International Pacific Research Center
文摘During the developing phase of central Pacific El Nio(CPEN), more frequent TC genesis over the northwest quadrant of the western North Pacific(WNP) is attributed to the horizontal shift of environmental vorticity field.Such a northwestward shift resembles the La Nia composite, even though factors that cause the shift differ(in the La Nia case the relative humidity effect is crucial). Greater reduction of TC frequency over WNP happened during the decaying phase of eastern Pacific El Nio(EPEN) than CPEN, due to the difference of the anomalous Philippine Sea anticyclone strength. The TC genesis exhibits an upward(downward) trend over the northern(southern) part of the WNP,which is linked to SST and associated circulation changes through local and remote effects.
基金Supported by National Social Science Fund of China(17BTJ023)
文摘Modeling log-mortality rates on O-U type processes and forecasting life expectancies are explored using U.S. data. In the classic Lee-Carter model of mortality, the time trend and the age-specific pattern of mortality over age group are linear, this is not the feature of mortality model. To avoid this disadvantage, O-U type processes will be used to model the log-mortality in this paper. In fact, this model is an AR(1) process, but with a nonlinear time drift term.Based on the mortality data of America from Human Mortality database(HMD), mortality projection consistently indicates a preference for mortality with O-U type processes over those with the classical Lee-Carter model. By means of this model, the low bounds of mortality rates at every age are given. Therefore, lengthening of maximum life expectancies span is estimated in this paper.
基金Supported by the National Natural Science Foundation of China,No.81270969(to Wei Zhang)and No.81300723(to Cheng-Xiang Shan)Shanghai Science and Technology Commission,No.12ZR1439100(to Wei Zhang)
文摘AIM To examine the changes of the ghrelin/ghrelin O-acyltransferase(GOAT) axis and the mammalian target of rapamycin(m TOR) pathway in the hypothalamus after sleeve gastrectomy.METHODS A total of 30 obese type-2 diabetes Sprague-Dawley(SD) rats, 6 wk of age, fed with high-sugar and highfat fodder for 2 mo plus intraperitoneal injection of streptozotocin were randomly divided into three groups: non-operation group(S0 group, n = 10), sham operation group(Sh group, n = 10) and sleeve gastrectomy group(SG group, n = 10). Data of body mass, food intake, oral glucose tolerance test(OGTT), acylated ghrelin(AG) and total ghrelin(TG) were collected and measured at the first day(when the rats were 6 wk old), preoperative day 3 and postoperative week 8. The m RNA expression of preproghrelin, GOAT and neuropeptide Y(NPY), and protein expression of ghrelin, GOAT, GHSR and the m TOR pathway(p-Akt, p-m TOR and p-S6) were measured in the hypothalamus.RESULTS SG can significantly improve metabolic symptoms by reducing body mass and food intake. The obese rats showed lower serum TG levels and no change in AG, but the ratio of AG/TG was increased. When compared with the S0 and Sh groups, the SG group showed decreased TG(1482.03 ± 26.55, 1481.49 ± 23.30 and 1206.63 ± 52.02 ng/L, respectively, P < 0.05), but unchanged AG(153.06 ± 13.74, 155.37 ± 19.30 and 144.44 ± 16.689 ng/L, respectively, P > 0.05). As a result, the ratio of AG/TG further increased in the SG group(0.103 ± 0.009, 0.105 ± 0.013 and 0.12 ± 0.016, respectively, P < 0.05). When compared with the S0 group, SG suppressed m RNA and protein levels of preproghrelin(0.63 ± 0.12 vs 0.5 ± 0.11, P < 0.05) and GOAT(0.96 ± 0.09 vs 0.87 ± 0.08, P < 0.05), but did not change NPY m RNA expression(0.61 ± 0.04 vs 0.65 ± 0.07, P > 0.05) in the hypothalamus. The protein levels of p-Akt, p-m TOR and p-S6 were higher in the SG group, which indicated that the hypothalamic m TOR pathway was activated after SG at the postoperative week 8. CONCLUSION The reduction of ghrelin expression and activation of the m TOR pathway might have opposite effects on food intake, as SG improves obesity and T2 DM.
基金supported by the Foundation of Education Department of Fujian Province(Nos.JB12199 and JA11245)the National Natural Science Foundation of China(Nos.21233004 and 40972035)
文摘Polyoxometalates（POMs） with Cd-coordination complexes acting as supporting units are rarely reported. The linkage of the supporting units with inorganic building block（polyanion） is generally established on terminal O-atoms, but scarcely via bridging O-atoms. By introducing liquid small organic molecule（pyridine, C5NH5） as assistant ＂structure-directing agent＂, we obtained a novel organic-inorganic hybrid polytungstate,（Hpy）4[Cd（phen）2（P2W18O62）]·nH2O（1, n ≈ 3, py = pyridine, phen = 1,10-phenanthroline）, under hydrothermal conditions. The single-crystal X-ray diffraction analysis shows that 1 is the first compound containing an asymmetric heteropolyanion, [Cd（phen）2（P2W18O62）]4–, a Wells-Dawson-type polyanion monosupported by Cd-coordination complex via di-bridging O-atoms.
