Changes in phosphorus fractions associated with soil chemical properties under long-term organic and inorganic fertilization in paddy soils of southern China.

The identification of phosphorus (P) fractions is essential for understanding the transformation and availability of P in paddy soils. To investigate the soil P fractions associated with soil properties under long-term fertilization, we selected three fertilization treatments, including no fertilization (CK), chemical fertilizers (NPK) and chemical fertilizers combined with manure (NPKM), from three long-term experiments located in Nanchang (NC), Jinxian (JX) and Ningxiang (NX). The results showed that chemical fertilizers combined with manure (NPKM) significantly (P ≤ 0.05) increased the soil total phosphorus, Olsen P and soil organic matter (SOM) by 2, 3 and 1 times, respectively, compared with the NPK treatment, and by 4, 17 and 2 times, respectively, compared with the CK treatment. NPKM significantly increased the grain yield compared with CK and NPK at all sites. The apparent P balance with NPK was higher in NC and NX but lower in JX compared with NPKM. Hedley fractionation revealed the predominance of most of the organic and inorganic phosphorus (Po and Pi) fractions with long-term fertilization, especially with the NPKM treatment, at all sites. The nonlabile P pool decreased by 14% and 18% whereas the moderately labile P pool proportions increased by 3 and 6 times with the NPK and NPKM treatments, respectively, compared to the CK treatment. The labile P pool showed a significant positive relationship with the SOM, total P and Olsen P contents. The moderately labile P was positively correlated with the total P and Olsen P. A significant positive correlation was observed between soil pH and the nonlabile P pool. Redundancy analysis revealed that the moderately labile P fraction (HCl dil. Pi fraction) was remarkably increased by the NPKM treatment and significantly correlated with the soil pH and total P concentration. The labile P fraction (NaHCO3-Pi) showed a strong relationship with the Olsen P and total P. However, the residual P fraction was negatively correlated with the HCl. dil. Pi fraction. We concluded that NPKM application improved P availability by many folds compared to NPK, which could lead to environmental pollution; therefore, the rate of combined application of manure and chemical fertilizer should be reduced compared to chemical fertilizer inputs to minimize the wastage of resources and environmental P losses.

Endovascular treatment to cerebral infarction combined with right aortic arch and Kommerell's diverticulum: case report / 中国医师杂志

Objective To investigate the effect of endovascular treatment of cerebral infarction with right aortic arch and Kommerell's diverticulum.Methods Retrospective analysis was done to assess the treatment effect of a case from vascular surgery,Xuanwu Hospital of Capital Medical University.This case was diagnosed as cerebral infarction with right aortic arch and Kommerell's diverticulum.Results One month after the treatment of cerebral infarction,we successfully used the thoracic aortic stent to isolate the Kommerell's diverticulum.There were no operative complications occurred.The stent had good shape and smooth blood flow was seen in the stent.Conclusions Endovascular treatment to cerebral infarction with right aortic arch and Kommerell's diverticulum is safe and feasible,and the clinical outcome requires further long-term follow-up.

Endovascular treatment to cerebral infarction combined with right aortic arch and Kommerell 's diverticulum: case report / 中国医师杂志

Objective@#To investigate the effect of endovascular treatment of cerebral infarction with right aortic arch and Kommerell's diverticulum.@*Methods@#Retrospective analysis was done to assess the treatment effect of a case from vascular surgery, Xuanwu Hospital of Capital Medical University. This case was diagnosed as cerebral infarction with right aortic arch and Kommerell's diverticulum.@*Results@#One month after the treatment of cerebral infarction, we successfully used the thoracic aortic stent to isolate the Kommerell's diverticulum. There were no operative complications occurred. The stent had good shape and smooth blood flow was seen in the stent.@*Conclusions@#Endovascular treatment to cerebral infarction with right aortic arch and Kommerell's diverticulum is safe and feasible, and the clinical outcome requires further long-term follow-up.

Preservation technique of internal iliac artery in performing endovascular aortic repair / 介入放射学杂志

Endovascular aortic repair (EVAR) has been the main treatment means for abdominal aortic aneurysm.It has become an expert consensus that in the case of abdominal aortic aneurysm that is complicated by iliac aneurysm,the preservation of internal iliac artery is necessary because it can prevent the occurrence of gluteal muscle ischemnia,sigmoid ischemia,male sexual dysfunction and other complications.In recent years,with the continuous updating of the endovascular devices it has become possible to retain the internal iliac artery in the performance of EVAR.At present,the reconstruction of internal iliac artery in EVAR includes a variety of techniques,including intraluminal iliac branched device (IBD) technique,sandwich technique,common iliac artery covered-stent bell-bottom (BBT) technique,external iliac artery-internal iliac artery intraluminal shunt technique (reverse chimney technique),and spring coil embolism technique.This article aims to make a summary of all the above mentioned techniques.

Endovascular Repair of Abdominal Aortic Diseases with Unibody Bifurcated Stent-graft / 中国微创外科杂志

Open surgery was the main treatment for abdominal aortic diseases in the past .However , with the development of endovascular instruments , endovascular repair technique has become the main option for abdominal aortic diseases .Unibody bifurcated stent-graft and modular bifurcated stent-graft are often used to treat abdominal aortic diseases .Unibody bifurcated stent-graft has its own features in endovascular repair of abdominal aortic diseases .We made a literature summary on application of unibody bifurcated stent-graft in abdominal aortic diseases .