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| 1 | 运用卫星数据和来自国家森林清查的野外数据进行全国森林变量估计显示文摘瑞典约有55%的土地面积被森林所覆盖。目前,瑞典的森林覆盖没有统一的和地理学上明晰的描述。现存的独立性数据源是Landsat TM和SPOT HRV卫星数据、地图蒙片(map mask)和森林清查样地。它们在一起,使森林变量(如材积和林分年龄)的计算机估计成为可能。这些估计的精确度在像素水平上是低的,但在林分水平上较高。在规划木材资源应如何加以利用或出于监测目的时,这类基于栅格的森林数据对政府来说是有帮助的。本文描述了以有效成本建立森林变量估计全国数据库的生成流程。我们在林分水平上评价了瑞典西南部某地森林变量估计的精确度。结果表明,总材积估计的整体均方根误差为33%,年龄估计的整体均方根误差为23%。 | Heather Reese Mats Nilsson Tina Granqvist Pahlén Olle Hagner Steve Joyce Ulf Tingelf Mikael Egberth Hkan Olsson 王胜 | 2003 | AMBIO-人类环境杂志2003,32,8: | 4 |
| 2 | Mapping aboveground biomass and its prediction uncertainty using LiDAR and field data, accounting for tree-level allometric and LiDAR model errors显示文摘Background: The increasing availability of remotely sensed data has recently challenged the traditional way of performing forest inventories, and induced an interest in model-based inference. Like traditional design-based inference, model-based inference allows for regional estimates of totals and means, but in addition for wall-to-wall mapping of forest characteristics. Recently Light Detection and Ranging(LiDAR)-based maps of forest attributes have been developed in many countries and been well received by users due to their accurate spatial representation of forest resources. However, the correspondence between such mapping and model-based inference is seldom appreciated. In this study we applied hierarchical model-based inference to produce aboveground biomass maps as well as maps of the corresponding prediction uncertainties with the same spatial resolution. Further, an estimator of mean biomass at regional level, and its uncertainty, was developed to demonstrate how mapping and regional level assessment can be combined within the framework of model-based inference.Results: Through a new version of hierarchical model-based estimation, allowing models to be nonlinear, we accounted for uncertainties in both the individual tree-level biomass models and the models linking plot level biomass predictions with LiDAR metrics. In a 5005 km2 large study area in south-central Sweden the predicted aboveground biomass at the level of 18 m×18 m map units was found to range between 9 and 447 Mg·ha^-1. The corresponding root mean square errors ranged between 10 and 162 Mg·ha^-1. For the entire study region, the mean aboveground biomass was 55 Mg·ha^-1 and the corresponding relative root mean square error 8%. At this level 75%of the mean square error was due to the uncertainty associated with tree-level models.Conclusions: Through the proposed method it is possible to link mapping and estimation within the framework of model-based inference. Uncertainties in both tree-level biomass models and models linking plot level biomass with LiDAR data are accounted for, both for the uncertainty maps and the overall estimates. The development of hierarchical model-based inference to handle nonlinear models was an important prerequisite for the study. | Svetlana Saarela AndréWästlund Emma Holmström Alex Appiah Mensah Sören Holm Mats Nilsson Jonas Fridman Göran Ståhl | 2020 | Forest Ecosystems2020,7,3: | 3 |
| 3 | Biomarkers of Coagulation, Inflammation, and Angiogenesis are Independently Associated with Preeclampsia显示文摘 | Roland Boij Judit Svensson Kristina Nilsson‐Ekdahl Kerstin Sandholm Tomas L. Lindahl Elzbieta Palonek Mats Garle G?ran Berg Jan Ernerudh Maria Jenmalm Leif Matthiesen | 2012 | Am J Reprod Immunol2012,,3: | 2 |
| 4 | 母本对雌激素暴露和PCB对斑马鱼(Danio rerio)不同生活阶段的影响显示文摘人类已发现多氯联苯(PCBs)影响着鱼的繁殖和发育。我们研究了:2,3,3’,4,4’,5,6-HpCB(PCB-190);2,3,4,4’-TeCB(PCB-60);和2,2’,4,6,6’-PeCB(PCB-104)三种PCB同系化合物以及雌激素17β-雌二醇对斑马鱼(Danio rerio)的繁殖力、早期生活阶段死亡率、总体形态学和组织学的影响。虽然没有一种被研究物质会降低鱼的繁殖力,但它们却增加了胚胎和幼体的死亡率。我们发现用17β-雌二醇或弱雌激素性的PCB-104处理时对生育力有最严重的影响。鱼暴露于17β-雌二醇或PCB-104后,在卵黄囊吸收期内持续有死亡发生。另一方面,PCB-60只在30%原肠期到75%原肠期之间能导致死亡。当胚胎开始死亡的同时,胚胎的发育和孵化被延缓。PCB-190仅对早期生理阶段的死亡率有轻微的影响。鱼被养殖到性成熟后才用来进行总体形态学和组织学的分析。用PCB-104和PCB-190处理过的鱼可观察到形态的变化。这两种物质都产生颅面畸形,而且PCB-104还对雌性鱼产生脊柱前凸,对两种性别的鱼都产生脊柱侧凸。根据组织学分析,我们发现PCB-104和17β-雌二醇在肾脏中引起了细胞核破裂和核溶解。用17β-雌二醇和PCB-190处理的鱼,可以观察到可能是胆汁郁积症状。在用17β-雌二醇、PCB-104和PCB-60处理的鱼中,可观察到对性腺的一些影响,包括在卵巢中显示闭锁区域和精巢在一定程度上不产生精子。虽然所有被研究的物质都对后代产生影响,但雌激素性物质具有很高的胚胎毒性,这个观察结果提出了对污染地区导致内分泌紊乱的物质可能严重减少鱼的种群的注意。 | Per-ErikOlsson Liselotte Westerlund SweeJ.Teh Karin Billsson A.H■kanBerg Mats Tysklind Jan Nilsson Lars-OveEriksson David.E.Hinton 孙学飞 | 1999 | 人类环境杂志1999,28,1: | 2 |
| 5 | Talc-Based Concrete for Sealing Borehole Optimized by Using Particle Packing Theory显示文摘 | Mohammed Harem Mohammed Roland Pusch Nadhir A1-Ansari Sven Knutsson Mats Emborg Martin Nilsson Alireza Pourbakhtiar | 2013 | Journal of Civil Engineering and Architecture2013,7,4: | 2 |
| 6 | Extent of lymphadenectomy has no impact on postoperative complications after gastric cancer surgery in Sweden显示文摘Objective: Curative gastric cancer surgery entails removal of the primary tumor with adequate margins including regional lymph nodes. European randomized controlled trials with recruitment in the 1990's reported increased morbidity and mortality for D2 compared to D1. Here, we examined the extent of lymphadenectomy during gastric cancer surgery and the associated risk for postoperative complications and mortality using the strengths of a population-based study.Methods: A prospective nationwide study conducted within the National Register of Esophageal and Gastric Cancer. All patients in Sweden from 2006 to 2013 who underwent gastric cancer resections with curative intent were included. Patients were categorized into D0, D1, or D1+/D2, and analyzed regarding postoperative morbidity and mortality using multivariable logistic regression.Results: In total, 349(31.7%) patients had a D0, 494(44.9%) D1, and 258(23.4%) D1+/D2 lymphadenectomy.The 30-d postoperative complication rates were 25.5%, 25.1% and 32.2%(D0, D1 and D1+/D2, respectively), and 90-d mortality rates were 8.3%, 4.3% and 5.8%. After adjustment for confounders, in multivariable analysis, there were no significant differences in risk for postoperative complications between the lymphadenectomy groups. For90-d mortality, there was a lower risk for D1 vs. D0.Conclusions: The majority of gastric cancer resections in Sweden have included only a limited lymphadenectomy(D0 and D1). More extensive lymphadenectomy(D1+/D2) seemed to have no impact on postoperative morbidity or mortality. | chih-han kung huan song weimin ye magnus nilsson jan johansson ioannis rouvelas tomoyuki irino lars lundell jon a tsai mats lindblad | 2017 | Chinese Journal of Cancer Research2017,29,4: | 2 |
| 7 | Microbial carbon mineralisation in an acid surface peat: Effects of environmental factors in laboratory incubations显示文摘 | Bergman I Peter Lundberg Mats Nilsson | 1999 | Soil Biology and Biochemistry1999,31,13: | 1 |
| 8 | Arylboronic acids as versatile coupling partners in fast microwave promoted oxidative Heck chemistry 显示文摘 | Murugaiah M S Andappan Peter Nilsson Mats Larhed | 2003 | Molecular Diversity2003,7,: | 1 |
| 9 | Frag- mentation and flow regulation of the world' s large river systems 显示文摘 | Christer Nilsson Catherine A Reidy Mats Dynesius | 2005 | Science2005,308,: | 1 |
| 10 | Fragmentation and flow regulation of river systems in the northern third of the world 显示文摘 | Mats Dynesius Christer Nilsson | 1994 | Science1994,266,: | 1 |
| 11 | Marker-assisted selection of restored male-fertile Brassica napus plants using a set of dominant RAPD markers显示文摘 | Mats Hansen Christer Halldén Nils-Otto Nilsson Torbj?rn S?ll | 1997 | Molecular Breeding1997,,6: | 1 |
| 12 | Estimation of tree heights and stand volume using an airborne LIDAR systems显示文摘 | Mats Nilsson | 1996 | Remote Sensing of Environment1996,56,1: | 1 |
| 13 | Neurointensive care is justified in elderly patients with severe subarachnoid hemorrhage—an outcome and secondary insults study显示文摘 | Mats Ryttlefors Tim Howells Elisabeth Ronne-Engstr?m Pelle Nilsson Per Enblad | 2010 | Acta Neurochirurgica2010,,2: | 1 |
| 14 | What do economic simula- tions tell us? Recent mergers in the iron ore industry显示文摘 | Robert Lundmark Mats Nilsson | 2003 | Eco- nomics2003,,10: | 1 |
| 15 | Nordic MCL 2 trial update: six‐year follow‐up after intensive immunochemotherapy for untreated mantle cell lymphoma followed by BEAM or BEAC ?+?autologous stem‐cell support: still very long survival but late relapses do occur显示文摘 | Christian H. Geisler Arne Kolstad Anna Laurell Mats Jerkeman Riikka R?ty Niels S. Andersen Lone B. Pedersen Mikael Eriksson Marie Nordstr?m Eva Kimby Hans Bentzen Outi Kuittinen Grete F. Lauritzsen Herman Nilsson‐Ehle Elisabeth Ralfki?r Mats Ehinger Chris | 2012 | Br J Haematol2012,,3: | 1 |
| 16 | Competitive Adsorption of a Polydisperse Polymer during Emulsification: Experiments and Modeling显示文摘 | Lars Nilsson Mats Leeman Karl-Gustav Wahlund | 2007 | Langmuir2007,23,5: | 1 |
| 17 | Precipitation hardening in a 12% Cr-9% Ni-4% Mo-2% Cu stainless steel 显示文摘 | Mats Hattestrand Jan-Olof Nilsson Krystyna Stiller | 2004 | Acta Materialia2004,52,: | 1 |
| 18 | Histogram matching for the calibration of kNN stem volume estimates显示文摘 | Michael Gilichinsky Janne Heiskanen Andreas Barth J?Rgen Wallerman Mikael Egberth Mats Nilsson | 2012 | International Journal of Remote Sensing2012,,22: | 1 |
| 19 | Using the market at a cost: How the introduction of green eerlitl- cares in Sweden led to market inefficiencies显示文摘 | MATS NILSSON THOMAS SUNDQVIST | 2007 | Utilities Policy2007,,15: | 1 |
| 20 | Hydrodynamic control of nitrogen and phosphorus turnover in an eutrophicated estuary in an eutrophicated estuary in the Baltic显示文摘 | Per Nilsson Mats Jansson | 2002 | Water Research2002,36,18: | 1 |