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Efficiency of soil-applied ^(67)Zn-enriched fertiliser across three consecutive crops

Pedosphere 2021年第4期31卷 531-537页

作者： edson m.mattiello Eduardo L.CANCELLIER Rodrigo C.DA SILVA Fien DEGRYSE Roslyn BAIRD mike J.mCLAUGHLIN Department of Soil Science Universidade Federal de ViçosaViçosaMinas Gerais(Brazil) Department of Soil Science Universidade Federal de LavrasMinas Gerais(Brazil) The University of Adelaide School of AgricultureFood and WineFertiliser Technology Research CentrePMB 1Waite CampusGlen Osmond SA 5064(Australia)

A very small amount of applied zinc(Zn) is taken up by crops, resulting in low recovery by plants. Adding elemental sulphur to zinc oxide(ZnO) fertiliser could improve Zn solubilisation and exert a higher residual effect on crops than soluble Zn sources. We produced an isotopically labelled Zn-elemental sulphur fertiliser and evaluated its performance in comparison to traditional Zn sources during sequential crop cultivation. Three ^(67)Zn-labelled fertilisers,ZnO, zinc sulphate(ZnSO_(4)), and ZnO co-granulated with elemental sulphur(ZnOS^(0)), were soil applied, and their contributions to the uptake of Zn by three consecutive crops, wheat, ryegrass, and corn, were assessed in a 294-d pot experiment. The contributions of Zn fertilisers followed the order: ZnSO_(4) > ZnO= ZnOS^(0). The relative contributions of Zn fertilisers were lower in the first crop than in the subsequent crops. The overall recovery of applied Zn by the three crops was higher for ZnSO_(4) than for ZnO and ZnOS^(0), reaching 1.56%, 0.45%, and 0.33% of the applied Zn, respectively. Zinc recovery by plants was very low, regardless of the source of Zn. Adding elemental sulphur to ZnO did not increase its effectiveness up to 294 d after application. Fertiliser contribution was higher for the subsequent crops than for the initial crop, indicating the importance of assessing the residual effects of Zn fertilisers.

关键词： agronomic biofortification elemental sulphur fertilizer residual effect plant uptake Zn bioavailability Zn fertilization Zn source

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Computed tomography as primary postoperative follow-up after laparoscopic Roux-en-Y gastric bypass

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World Journal of Radiology 2018年第1期10卷 1-6页

作者： Tarik Delko Diana mattiello Thomas Koestler Urs Zingg Silke Potthast Department of Surgery University Hospital Basel Department of Surgery Limmattal Hospital Department of Radiology Limmattal Hospital

AIm To evaluate upper abdominal computed tomography(CT) scan as primary follow-up after laparoscopic Rouxen-Y gastric bypass(LRYGB). mETHODS This prospective study was approved by the Ethical Committee of the State of Zurich, and informed consent was obtained from all patients. Sixty-one patients who underwent LRYGB received upper abdominal CT on postoperative day 1, with the following scan parameters: 0.6 mm collimation, 1.2 mm pitch, Care KV with reference 120 m As and 120 kV, and 0.5 s rotation time. Diluted water-soluble radiographic contrastmedium(50 mL) was administered to achieve gastric pouch distension without movement of the patient. 3 D images were evaluated to assess postoperative complications and the radiation dose received was analysed. RESULTS From the 70 patients initially enrolled in the study, 9 were excluded from analysis upon the intraoperative decision to perform a sleeve gastrectomy and not a LRYGB. In all of the 61 patients who were included in the analysis, CT was feasible and there were no instances of aspiration or vomiting. In 7 patients, two upper abdominal scans were necessary as the pouch was not distended by contrast medium in the first acquisition. Radiologically, no leak and no relevant stenosis were found on the first postoperative day. These early postoperative CT findings were consistent with the findings at clinical follow-up 6 wk postoperatively, with no leaks, stenosis or obstructions being diagnosed. The average total dose length product in CT was 536.6 m Gycm resulting in an average effective dose of 7.8 m Sv. The most common surgical complication, superficial surgical site infections(n = 4), always occurred at the upper left trocar site, where the circular stapler had been introduced. CONCLUSION Early LRYGB postoperative multislice spiral CT scan is feasible, with low morbidity, and provides more accurate anatomical information than standard upper gastrointestinal contrast study.

关键词： Laparoscopic proximal Roux-en-Y gastric bypass Abdominal computed tomography Stenosis Upper gastrointestinal study Anastomotic leak

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研究新型高压直流连接线的环境要求

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电力建设 2007年第10期28卷 97-100页

作者： C.imario A.Giorgi R.Guandalini L.mattiello R.Noccolai G.Pazienza C.Pincella m.Rebolini R.Rendina G.Simioli 马明(摘译) TERNA Rete Elettrica Nazionale -罗马 CESI Centro Elettrotecnico Sperimentale Italiano 米兰 marine Electronics and Sea-Surveying - Lerici (SV) 意大利不详

意大利撒丁岛与意大利半岛之间新建的高压直流海底输电项目(SAPEI)的额定输送容量为1000mW,±500kV直流,跨海长度超过400km。在开发此项目过程中,环保要求起到了非常重要的作用。在项目立项报批过程中,解决了几项技术问题。

关键词：高压直流环保项目海水电极海洋勘测噪音

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