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Gneiss-Water Interaction and Water Evolution During the Early Stages of Dissolution Experiments at Room Temperature

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Chinese Journal Of Geochemistry 2003年第4期22卷 302-312页

作者：朱义年 ingrid stober Kurt Bucher Dept. of Resource and Environmental Engineering Guilin Institute of Technology Geological Survey Baden-Württemberg Institute for Mineralogy Petrology and Geochemistry University of Freiburg

Gneiss\|distilled water interaction at room temperature was investigated with batch\|reactors to study water\|rock reaction and geochemical evolution of the aqueous phase with time. The ion concentrations in water were controlled not only by the dissolution of primary minerals, but also by the precipitation of secondary minerals. The decreasing fraction sizes of gneiss could favor dissolution and precipitation simultaneously. Ca\+\{2+\} and K\++ were the major cations, and HCO\+-\-3 was the major anion in water. All the ions except Ca\+\{2+\} increased in concentration with time. The Ca\+\{2+\} release from the rock to the aqueous phase was initially much faster than the release of K\++, Na\++ and Mg\+\{2+\}. But after about 5-24 hours, the Ca\+\{2+\} concentrations in water decreased very slowly with time and became relatively stable. During the experiment, the water varied from the Ca\|(K)\|HCO\-3\|type water to the K\|Ca\|HCO\-3\|type water, and then to the K\|(Ca,Na)\|HCO\-3\|type water. The water\|gneiss interaction was dominated by the dissolution of K\|feldspar in the solution. The remaining secondary minerals were mainly kaolinite, illite and K(Mg)\|mica.

关键词： gneLss water interaction water evolufion

THE INFLUENCE OF IMPURITIES ON THE DISSOLUTION OF CA- AND SR-BEARING BARITE AT ROOM TEMPERATURE

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Chinese Journal Of Geochemistry 2006年第1期25卷 71-84页

作者：张学洪朱义年 ingrid stober KURT BUCHER FACULTY OF URBAN CONSTRUCTION AND ENVIRONMENTAL ENGINEERING CHONGQING UNIVERSITY CHONGQING 400044 CHINADEPT. OF RESOURCE AND ENVIRONMENTAL ENGINEERING GUILIN UNIVERSITY OF TECHNOLOGY GUILIN 541004 CHINA DEPT. OF RESOURCE AND ENVIRONMENTAL ENGINEERING GUILIN UNIVERSITY OF TECHNOLOGY GUILIN 541004 CHINAINSTITUTE FOR MINERALOGY PETROLOGY AND GEOCHEMISTRY UNIVERSITY OF FREIBURG ALBERTSTR.23B 79104 FREIBURG GERMANY GEOLOGICAL SURVEY BADEN-WüRTTEMBERG ALBERTSTR.5 79104 FREIBURG GERMANY INSTITUTE FOR MINERALOGY PETROLOGY AND GEOCHEMISTRY UNIVERSITY OF FREIBURG ALBERTSTR.23B 79104 FREIBURG GERMANY

The reaction path in the (Ba, Sr, Ca)SO-4 solid-solution aqueous-solution (SSAS) system was experimentally studied using a batch-reactor method. The effect of the impurities "fluorite" and "iron sulfides" admixed in a natural barite sample on the reaction path was followed by analyzing the aqueous solution continuously. The dissolution and precipitation of the impurity "fluorite" affected strongly the reaction path in the SSAS system, especially the Ca/Sr/Ba ratio in the aqueous solution. This influence became stronger with decreasing CaSO-4 in the solid solution. The dissolution and precipitation of fluorite could hinder the CaSO-4 component from dissolving into water, and reduce the release rate of SO{2-}-4 from the solid solution to the aqueous solution and the removing rate of Ba{2} from the aqueous solution. In the presence of fluorite and sulfides, the aqueous Ba{2} and Sr{2} concentrations were controlled by the dissolution-precipitation of the end-members BaSO-4 and SrSO-4, respectively; the aqueous F-, Ca{2} and SO{2-}-4 concentrations were controlled by the dissolution-precipitation of fluorite. The incongruent dissolution of the (Ba, Sr, Ca)SO-4 solid solution caused the solid phase to become progressively more enriched in the more insoluble component (BaSO-4), while the aqueous composition shifted towards the more soluble end-members (SrSO-4 and CaSO-4) as equilibrium was approached to.

关键词：杂质溶解作用重晶石温度矿床

德国黑森林中部克拉拉(Clara)萤石重晶石矿不同类型水的混合作用及次生重晶石的形成

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桂林工学院学报 2003年第3期23卷 241-250页

作者：朱义年 ingrid stober Kurt Bucher 桂林工学院源与环境工程系 Geological Survey Baden-Wuttemberg Albertstr. 5 79104 Freiburg Germany Institute of Mineralogy Petrology and Geochemistry University of Freiburg Albertstr.23b 79104 Freiburg Germany

不同类型的水的混合可能引起溶解和沉淀作用的发生,从而导致混合水具有全新的完全不同于混合前的性质,应用PHREEQC模拟了Clara矿区地下水、泉水、地表水及矿坑水在相对于二氧化碳气体封闭的或开放的体系中的混合作用。模拟计算的混合水... 详细信息

不同类型的水的混合可能引起溶解和沉淀作用的发生,从而导致混合水具有全新的完全不同于混合前的性质,应用PHREEQC模拟了Clara矿区地下水、泉水、地表水及矿坑水在相对于二氧化碳气体封闭的或开放的体系中的混合作用。模拟计算的混合水与实际水样中的主要离子的含量基本相同,较大的差别仅存在于微量组分。随着在混合过程中水的化学组成的变化,水的类型也会发生相应变化。不同类型水的混合可以导致饱和系数的强烈变化,从而引起某些矿物的溶解或沉淀。富Ba的Na-Ca-Cl-HCO_3类型水与富SO_4^(2-)的Ca-Na-SO_4-Cl类型水的混合是克拉拉矿次生重晶石形成的最主要原因。

关键词：水混合作用模拟 PHREEQC 次生重晶石 Clara矿德国

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含钙和锶重晶石在水中溶解时液相组分的演化

桂林工学院学报 2003年第1期23卷 31-35页

作者：朱义年 ingrid stober Kurt Bucher 桂林工学院资源与环境工程系广西桂林541004 Geological Survey Baden-Württemberg Institute for Mineralogy Petrology and Geochemistry University of Freiburg

通过实验研究了常温下天然的含钙和锶重晶石在水中溶解时,水溶液中化学组分随时间的演化.(Ba,Sr,Ca)SO4固溶体在水中发生不一致性溶解,导致固相逐渐富集较难溶的组分(BaSO4),而液相则向着富集较易溶组分(SrSO4和CaSO4)的方向变化.Ba2+,S... 详细信息

通过实验研究了常温下天然的含钙和锶重晶石在水中溶解时,水溶液中化学组分随时间的演化.(Ba,Sr,Ca)SO4固溶体在水中发生不一致性溶解,导致固相逐渐富集较难溶的组分(BaSO4),而液相则向着富集较易溶组分(SrSO4和CaSO4)的方向变化.Ba2+,Sr2+和Ca2+从固相进入液相的速度顺序为Ba2+

关键词：钙锶重晶石化学组分固溶体液相演化气液包裹体粒度水

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室温下水-花岗岩作用时液相组分的演化

广西科学 2003年第3期10卷 216-219页

作者：朱义年刘辉利 ingrid stober Kurt Bucher 桂林工学院资源与环境工程系桂林市建干路12号541004 Geological Survey Institute for Mineralogy

使用批反应器实验研究 2 1℃时花岗岩与蒸馏水的作用来探讨水 -岩作用以及液相随作用时间的地球化学演化。粒度为 1～ 2 mm,0 .5～ 1mm和 0 .2～ 0 .5 mm的花岗岩样品各 15 0 g和 75 0 ml纯水加入用聚丙烯做成的3个批反应器中进行反应... 详细信息

使用批反应器实验研究 2 1℃时花岗岩与蒸馏水的作用来探讨水 -岩作用以及液相随作用时间的地球化学演化。粒度为 1～ 2 mm,0 .5～ 1mm和 0 .2～ 0 .5 mm的花岗岩样品各 15 0 g和 75 0 ml纯水加入用聚丙烯做成的3个批反应器中进行反应试验。试验过程中用电动马达连续转动反应器。试验时间为 6 0 d。结果表明 ,液相主要是 Ca- (K) - HCO3型水或 K- (Ca) - HCO3型水。K+主要来自钾长石的溶解 ,Ca2 +主要与斜长石中钙长石组分的溶解有关。K+ 很容易从含 K+ 的原生矿物中被释放出来 ,同时 K+ 也容易从水中析出形成次生矿物。水中“Ca过剩”可以很好地用斜长石的不一致性溶解反应来解释 ,钙长石和钠长石悬殊的溶解度差异也是水中“Ca过剩”可能的原因之一。实验结果与用表面反应控制速率模式的解释及 Na+ 和 H+ 的表面竞争交换相一致。

关键词：花岗岩水-岩作用水的演化水的类型

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塔河油田奥陶系碳酸盐岩裂缝成因研究

特种油气藏 2009年第4期16卷 21-24,27页

作者：艾合买提江.阿不都热和曼钟建华 Kurt Bucher ingrid stober 中国石油大学山东东营257061 弗莱堡大学德国弗莱堡79104 中国科学院广州地球化学研究所广东广州510640

塔河油田碳酸盐岩储集层主要为岩溶作用、多期构造叠加及构造变形作用形成的缝洞型储集层,裂缝具有连通有效储存空间的桥梁作用。区分构造裂缝与非构造裂缝,结合塔河油田构造特征,并对碳酸盐岩储层裂缝特征、分类及其成因进行了分析。... 详细信息

塔河油田碳酸盐岩储集层主要为岩溶作用、多期构造叠加及构造变形作用形成的缝洞型储集层,裂缝具有连通有效储存空间的桥梁作用。区分构造裂缝与非构造裂缝,结合塔河油田构造特征,并对碳酸盐岩储层裂缝特征、分类及其成因进行了分析。研究表明:构造裂缝为塔河油田岩溶储层发育提供了流体运移通道,为油气的运移,特别是垂向运移提供了条件;非构造裂缝的存在改善了储层储渗性能,扩大了储层泄油面积。构造裂缝和非构造裂缝的存在作为储层的有利影响因素,对其进行深入研究可以为碳酸盐岩储层开发提供有益参考,并可增加储层预测产量。

关键词：碳酸盐岩岩溶构造裂缝非构造裂缝塔河油田

Evaluation of a complex couplet care intervention in a neonatal intensive care unit:A mixed methods study protocol

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Pediatric Investigation 2024年第2期8卷 139-148页

作者： Michella Bjerregaard Anna Axelin Emma Louise Malchau Carlsen Hans Okkels Birk ingrid Poulsen Patrick Palisz Thomas Kallemose Anne Brødsgaard Department of Paediatric and Adolescent Medicine Copenhagen University Hospital Amager HvidovreHvidovreDenmark Department of Public Health Faculty of HealthResearch Unit for Nursing and HealthcareUniversity of AarhusAarhusDenmark Department of Nursing Science University of TurkuTurkuFinland Department of Clinical Medicine Faculty of Health and Medical ScienceUniversity of CopenhagenCopenhagenDenmark Department of Public Health Section of Health Service ResearchUniversity of CopenhagenCopenhagenDenmark Department of People and Technology Roskilde UniversityRoskildeDenmark Department of Clinical Research Copenhagen University Hospital Amager HvidovreHvidovreDenmark Department of Gynaecology and Obstetrics Copenhagen University Hospital Amager HvidovreHvidovreDenmark

Background:Families with an infant in need of intensive care most often experience a harmful separation after *** is due to a division of medical specialties into neonatal care and maternal ***,a couplet care intervention is implemented for mother-infant dyads in a neonatal intensive care *** study protocol provides a comprehensive evaluation of the *** aim is to evaluate the effect and implementation of a complex couplet care intervention to promote zero separation between mother and ***:The couplet care intervention is a family-centered model of care,where treatment-requiring mother-infant dyads will be admitted together and receive couplet care by neonatal *** study adheres to the framework of the Medical Research Council and will use a mixed methods embedded design comprising a quasi-experimental trial and a qualitative process ***,a health economic evaluation will be conducted to assess the cost-effectiveness of this complex couplet care ***:Separation of mother-infant dyads after birth has an adverse impact on family health and *** study protocol evaluates a complex couplet care *** this study,a first step is taken to help bridge the gap between current practices and a new care model to prevent the separation of mothers and their infants.

关键词： Complex interventions Couplet care Family-centered care Neonatology Zero separation

用于农药喷施的液力式喷头雾化与沉积分布特性分析

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农药学学报 2024年第1期26卷 168-178页

作者：王士林陆岱鹏 Jonathan VAN BEEK ingrid ZWERTVAEGHER 王伟徐陶刘春唐玉新李雪 David NUYTTENS 江苏省农业科学院农业设施与装备研究所南京210014 农业部长江中下游设施农业工程重点实验室南京210014 佛兰德斯农业、渔业和食品研究所比利时梅勒尔贝克9820

在众多类型的喷头中,液力式雾化喷头因其雾化量大、能耗低、设备简单、经济性好而得到更广泛应用。研究液力式喷头的雾化与沉积特性对改善农药喷施效果具有重要的指导意义。为明确液力式喷头的类型和喷雾参数对其雾化和沉积特性的影响,... 详细信息

在众多类型的喷头中,液力式雾化喷头因其雾化量大、能耗低、设备简单、经济性好而得到更广泛应用。研究液力式喷头的雾化与沉积特性对改善农药喷施效果具有重要的指导意义。为明确液力式喷头的类型和喷雾参数对其雾化和沉积特性的影响,本文对6种类型的液力式喷头(标准扇形雾XR 110-015、防飘扇形雾DG 110-015、射流扇形雾AIXR 110-015、射流扇形雾AI 110-015、空心圆锥雾TXA 80-015和射流空心圆锥雾AITXA 80-015)的雾滴粒径、雾滴沉降速度以及沉积分布进行了测试。结果表明:6种供试喷头的雾滴粒径均随喷雾压力的增大而减小,不同喷雾压力下细雾滴(XR 110-015)和中等雾滴喷头(DG 110-015)的体积中值直径(D_(v0.5))差异较小,而粗雾滴(AIXR 110-015)和超粗雾滴喷头(AI 110-015和AITXA 80-015)对喷雾压力的敏感性更强,其雾滴的D_(v0.5)值随着喷雾压力的增加而急剧下降。雾滴沉降速度与分布特征主要由喷头类型决定,喷雾压力对雾滴沉降速度的影响较小,同一喷头在不同喷雾压力下的雾滴沉降速度分布趋势相似。相同喷雾压力下,细雾滴喷头的平均沉降速度(Vavg)高于其体积中值沉降速度(V_(v0.5)),但随着喷头雾滴的增大,中雾滴喷头和粗雾滴喷头的V_(v0.5)超过其Vavg,且雾滴的粒径越大两者差值越明显。雾滴的沉积结果显示,不同喷雾压力下各喷头的喷雾液流失率均在7.82%~9.75%范围内,各喷头在不同喷雾压力下的流量相似,且略低于其名义流量。喷雾压力对DG 110-015、XR 110-015和AIXR 110-015喷头的雾滴沉积分布均匀性无显著影响,但较高的喷雾压力可提高AITXA 80-015和TXA 80-015喷头的雾滴沉积分布均匀性。本研究可为田间施药时液力式喷头的选择和作业参数的优化提供理论指导和技术参考。

关键词：农药喷施液力式喷头喷雾雾滴谱雾滴沉降速度沉积

Acute Metabolic Complications of Diabetes in the Oueme-Plateau Provincial Teaching Hospital: Epidemiological, Clinical, Paraclinical and Evolutionary Aspects

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Open Journal of Internal Medicine 2024年第1期14卷 83-92页

作者： Finangnon Armand Wanvoegbe Comlan Jules Gninkoun Hubert Dedjan Kouessi Anthelme Agbodande Van Carrel Yongolo Prosper Singbo Elisé Boko Manchouhoud Alalade Adele Cakpo ingrid Thomas Angele Azon Kouanou Internal Medicine Department Oueme-Plateau Provincial Teaching Hospital Porto-Novo Benin Endocrinology Department Hubert Koutoukou Maga National Teaching Hospital Cotonou Benin Endocrinology Department Oueme-Plateau Provincial Teaching Hospital Porto-Novo Benin Internal Medicine Department Hubert Koutoukou Maga National Teaching Hospital Cotonou Benin

Introduction: Diabetes mellitus, a metabolic disease, is now an important public health problem across the world. Our aim was to study the epidemiological, clinical, paraclinical, and evolutionary aspects of acute metabolic complications (AMC) of diabetes in the endocrinology department of the Oueme-Plateau Provincial Teaching Hospital. Methods: This was a descriptive cross-sectional study with data collection based on the medical records of patients presenting with acute metabolic complications of diabetes in the endocrinology department of the Oueme-Plateau Provincial Teaching Hospital during the 3 years study period (from January 2020 to December 2022). Results: Over 788 patients hospitalized during the study period, 157 had an acute metabolic complication of diabetes, which is a hospital prevalence of 19.9%. Among these 157 cases, 140 were suitable for analysis and therefore constituted our study sample. The mean age of the patients was 49.9 ± 14.7 years, with 19 as minimum and 90 years as maximum. Most of them were women (52.4%). Hypertensive diabetics accounted for 54.9% of cases. Ketoacidosis was the most common complication (62.1%), followed by hyperosmolar hyperglycemic syndrome (23.6%) and hypoglycemia (14.3%). Infection (69.3%) and therapeutic noncompliance (22.9%) were the most common triggers. The average length period of their hospital stay was 7.1 ± 5.1 days, and the outcome was satisfactory in 87.9% of the cases. Unfortunately, there were 3.6% deaths during hospitalization. Conclusion: Acute metabolic complications of diabetes were dominated by ketoacidosis. Infection was the dominant factor in decompensation. Therapeutic education of diabetic patients as well as clinical and biological monitoring must be more stringent and rigorous.

关键词： Acute Metabolic Complications Diabetes Ketoacidosis Porto-Novo