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40篇 您的检索式:作者名="Jan Mulder"
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1中国的酸化问题——一项基于重庆—广州森林监测点研究结果的评估显示文摘中国经济的快速增长一直伴随着污染的加剧。本文在现场观测和文献研究的基础上讨论了酸性降水及其先兆的范围和影响。目前酸性降水的主要原因是二氧化硫的排放,但氮氧化物的排放也在增加。中国污染最严重地区的硫化合物沉降比东欧和中欧经受严重污染的地区要高。中国南部很多地区的土壤和土壤水看来已经被酸化。这些地区的污染已经影响了森林和其他植物的生命力,特别是在位于和靠近城市地区的地方。地表水的酸化似乎在近期不会成为主要的区域性问题,但一些地区的河流,目前虽仅接受少量的酸沉降,却对酸化显得较敏感。Hans M. Seip Per Aagaard Valter Angell Odd Eilertsen ThorjφrnLarssen Espen Lydersen Jan Mulder Ivar P. Muniz Arne Semb 汤大钢 Rolf D. Vogt 肖劲松 赵大为 孔国辉 岳欣 1999AMBIO-人类环境杂志1999,28,6:5
21980~2050年大气沉降导致中国森林土壤酸化显示文摘稳定的土壤pH对维持生态系统的结构和功能至关重要.中国是酸沉降最严重的区域,长期高剂量的酸沉降可能将导致土壤pH显著降低,甚至造成严重的区域生态环境问题.然而,目前有关酸沉降对中国森林土壤酸化的影响还未见报道.本文利用土壤酸化过程模型结合长期监测的大气沉降、植物-土壤养分含量数据、社会发展、气候和污染控制情景,评估并预测1980~2050年间大气沉降导致的森林土壤酸化趋势.结果表明:1980~2019年,表层土壤pH和碱基饱和度分别平均下降0.56和18%.氮沉降的贡献小于硫沉降,但它仍在持续增加.预测结果表明,2020~2050年可持续发展结合高强度减排情景相较于不采取措施情景可使土壤pH下降减少60%,但仍不能逆转土壤pH降低.因此,在未来不仅需要继续控制酸性污染物的排放,还需要加强氮的控制,并在土壤酸化高风险区采取相应恢复措施.Qiongyu Zhang Jianxing Zhu Qiufeng Wang Li Xu Mingxu Li Guanhua Dai Jan Mulder Yue Xi Nianpeng He 2022Science Bulletin2022,67,9:2
3Abdominal computed tomography in refractory coeliac disease and enteropathy associated T-cell lymphoma显示文摘AIM: To evaluate computed tomography (CT) findings, useful to suggest the presence of refractory celiac disease (RCD) and enteropathy associated T cell lymphoma (EATL). METHODS: Coeliac disease (CD) patients were divided into two groups. GroupⅠ: uncomplicated CD (n = 14) and RCD typeⅠ(n = 10). Group Ⅱ: RCD type Ⅱ (n = 15) and EATL (n = 7). RESULTS: Both groups showed classic signs of CD on CT. Intussusception was seen in 1 patient in groupⅠvs 5 in group Ⅱ (P = 0.06). Lymphadenopathy was seen in 5 patients in group Ⅱ vs no patients in groupⅠ(P = 0.01). Increased number of small mesenteric vessels was noted in 20 patients in groupⅠvs 11 in group Ⅱ (P = 0.02). Eleven patients (50%) in group Ⅱ had a splenic volume < 122 cm3 vs 4 in groupⅠ(14%), 10 patients in groupⅠ had a splenic volume > 196 cm3 (66.7%) vs 5 in group Ⅱ (33.3%) P = 0.028. CONCLUSION: CT scan is a useful tool in discriminating between CD and (Pre) EATL. RCD Ⅱ and EATL showed more bowel wall thickening, lymphadenopathy and intussusception, less increase in number of small mesenteric vessels and a smaller splenic volume compared with CD and RCDⅠ.Maarten Mallant Muhammed Hadithi Abdul-Baqi Al-Toma Matthijs Kater Maarten Jacobs Radu Manoliu Chris Mulder Jan Hein van Waesberghe 2007World Journal of Gastroenterology2007,13,11:2
4Operator Effort and the Measurement of Heart-Rate Variability显示文摘Jans Aasman Gijsbertus Mulder Lambertus J M Mulder 1987Human Factors1987,29,2:2
5Comparison of MR enteroclysis with video capsule endoscopy in the investigation of small-intestinal disease显示文摘Stijn J. B. Weyenberg Koen Bouman Maarten A. J. M. Jacobs Brendan P. Halloran Donald L. Peet Chris J. J. Mulder Cornelis Kuijk Jan Hein T. M. Waesberghe 2013Abdominal Imaging2013,,1:2
6挪威Storgama小型源头集水区积雪操控实验:对总有机碳和总有机氮淋溶的影响显示文摘预期未来气候变化将引起冬季温度升高,这可能导致北温带较低和中等高度地区的雪积累降低。土壤温度和水状况的变化结果会影响总有机碳(TOC)、总有机氮(TON)的淋溶。本研究在挪威南部的山地荒野区对小型源头集水区的积雪覆盖进行操控实验,以此来量化对径流中TOC和TON浓度和通量的影响。操控实验包括除雪处理(以促进土壤冻结)和隔离处理(以阻止土壤冻结)。除雪处理导致TOC和TON浓度升高,但通量减少。隔离引起TOC浓度和通量少量降低。研究结果表明,积雪深度变化,因而土壤温度也发生变化,对所研究的山地荒野区的TOC和TON淋溶不会有严重影响。Kari Austnes Φyvind Kaste Live Semb Vestgarden Jan Mulder 张秋英 2008AMBIO-人类环境杂志2008,37,1:2
7人类对氮循环的影响:从地区远景看全球问题显示文摘本章探讨有关全球氮循环中人为扰动的主要问题,并将项目研究中的一些地区性发现与大尺度影响联系起来。人类将大气中的N_2转化为生物化学活性更强的形式,这产生一系列的环境效应。本项目旨在评估挪威南部两大流域及其子流域的氮状况,并随着研究的进展阐述氮保持与流失的一些模式。对人口稀少的荒地而言,大气输入是氮的主要来源,约为2.5mg/m^2·a。低固定和明显的氮饱和源于大气氮的高输入,以及水文条件、土壤贫瘠和陆地磷的缺乏。在这个酸化的流域,NO_x和NH_x的扩散急剧下降,地表水的酸化中将近一半是由于氮的影响。磷的浓度较低,通常低干1μg/L,这使得流失物中氮/磷的比值高,从而导致淡水和近海中磷的缺乏。对农业化和森林覆盖的流域而言,大气中的氮沉降低于1.5mg/m^2·a,因此农业活动是氮的主要来源,同时淋溶水中氮和磷的浓度一般较高但波动较大。农业和林业是氮流失的主要因素。本流域入海口水流中高浓度的氮和磷是峡湾地区富营养化的主要原因。对两个流域而言,气候波动都强烈的影响氮的流失方式。氨盐的转化以及气候变化可能导致的土壤有机氮的矿质化都不可预测地作用于未来氮循环。Dag O.Hessen Arne Henriksen Atle Hindar Jan Mulder KjetilTφrseth Nils Vagstad 李本纲 1997人类环境杂志1997,26,5:2
8Incidence and risk factors for nevirapine-associated rash显示文摘Monique M. R. Maat Rob Heine Jan W. Mulder Pieter L. Meenhorst Albert T. A. Mairuhu Eric C. M. Gorp Alwin D. R. Huitema Jos H. Beijnen 2003European Journal of Clinical Pharmacology (-)2003,,5:1
9Acid deposition and its effects in China: an overview显示文摘Thorj?rn Larssen Hans Martin Seip Arne Semb Jan Mulder Ivar P. Muniz Rolf D. Vogt Espen Lydersen Valter Angell Tang Dagang Odd Eilertsen 1999Environmental Science and Policy1999,,1:1
10N Leaching from Small Upland Headwater Catchments in Southwestern Norway显示文摘Anne Merete Smelhus Sj?eng ?yvind Kaste Kjetil T?rseth Jan Mulder 2007Water Air and Soil Pollution (-)2007,,1:1
11Assertive community treatment for elderiy people with severe mental iilness 显示文摘Jolanda Stobbe Niels CL Mulder Bert -Jan Roosenschoon 2010BMC Psychiatry2010,10,:1
12Prediction of the Minimum Fluidization Velocity显示文摘Bernard C Lippens Jan Mulder 1993Powder Technology1993,,75:1
13Architecture and mineralization of developing cortical and trabecular bone of the mandible显示文摘Lars Mulder Jan Harm Koolstra Henri?tte W. Jonge Theo M.G.J. Eijden 2006Anatomy and Embryology2006,,1:1
14Traditional and Modern Technology Assessment: Toward a Tool kit 显示文摘Jan Van Den Ende Karel Mulder Marjolijin Knot Ellen Moors Philip Vergaragt 1998Technological Forecasting and Social Change1998,58,:1
15Traditional and Modern Technology Assessment:Toward a Toolkit 显示文摘Jan Van Den Ende Karel Mulder Marjolijn Knot Ellen Moors Philip Vergragt 1998Technological Forecasting and Social Change1998,,58:1
16The effect of a preoperative subconjuntival injection of dexamethasone on blood–retinal barrier breakdown following scleral buckling retinal detachment surgery: a prospective randomized placebo-controlled double blind clinical trial显示文摘Ernesto Bali Eric J. Feron Ed Peperkamp Marc Veckeneer Paul G. Mulder Jan C. Meurs 2010Graefe’s Archive for Clinical and Experimental Ophthalmology2010,,7:1
17挪威Storgama小型源头集水区降水量操控实验:对有机碳和氮化物淋溶的影响显示文摘挪威南部气候的预期变化包括夏秋降水量的增加。这会影响土壤溶解有机物(DOM)的淋溶。本文评估了Storgama(59°0′N,海拔550~600m)小型源头集水区3年(2004~2006年)生长季中实验性增加降水(10mm/周)对总有机碳(TOC)和总有机氮(TON)淋溶的影响。额外降水(extra precipitation)对径流中TOC和TON平均浓度没有显著影响。所以,TOC和TON通量的增加几乎与水流量成比例。这说明,集水区土壤储存的吸附性和潜在移动性TOC和TON缓冲了径流中的DOM浓度。TOC和TON库的大小和动态依赖于生产和淋溶速度之间的平衡。罕见的短暂干旱对来自参照流域径流中的TOC和TON通量只有很小的影响。Stle Haaland Kari Austnes Φyvind Kaste Jan Mulder Gunnhild Riise Live Semb Vestgarden Arne O.Stuanes 王胜 2008AMBIO-人类环境杂志2008,37,1:1
18Distribution, speciation and availability of antimony (Sb) in soils and terrestrial plants from an active Sb mining area显示文摘Gudny Okkenhaug Yong-Guan Zhu Lei Luo Ming Lei Xi Li Jan Mulder 2011Environmental Pollution2011,,10:1
19Therole of soil organic matter and short-range ordered aluminosilicates incontrolling the activity of aluminum in soil solutions of volcanic ashsoils显示文摘YASUMI YAGASAKI JAN MULDER MASANORI OKAZAKI 2006Science Direct2006,137,:1
20Fetal heart rate in relation to its variation in normal and growth retarded fetuses显示文摘Ilse J.M. Nijhuis Judith ten Hof Eduard J.H. Mulder Jan G. Nijhuis Harini Narayan David J. Taylor Gerard H.A. Visser 2000European Journal of Obstetrics and Gynecology2000,,1:1
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