Field Spectroscopy in the VNIR-SWIR Region to Discriminate between Mediterranean Native Plants and Exotic-Invasive Shrubs Based on Leaf Tannin Content 基于可见光近红外（VNIR）和短波红外（SWIR），科学家应用ASD地物光谱仪测量叶片单宁的含量，从而区分地中海附近海岸的本土植物和外来入侵灌木。Authors: Jan Rudolf Karl Lehmann, André Große-Stoltenberg, Meike Römer and Jens OldelandAbstract: The invasive shrub, Acacia longifolia, native to southeastern Australia, has a negative impact on vegetation and ecosystem functioning in Portuguese dune ecosystems. In order to spectrally discriminate A. longifoliafrom oth...
发布时间:
2015
-
05
-
12
浏览次数：260
科学家应用LGR氨气分析仪快速原位机载测量空气中氨气的含量Fast in situ Airborne Measurement of AmmoniaUsing a Mid-Infrared Off-Axis ICOS Spectrometer科学家应用LGR氨气分析仪快速原位机载测量空气中氨气的含量，这可以帮助我们更好的分析大气的成分和气溶胶的组成，具有深远的意义。J. Brian Leen,†,* Xiao-Ying Yu,‡,* Manish Gupta,† Douglas S. Baer,† John M. Hubbe,‡ Celine D.Kluzek, ‡ Jason M. Tomlinson,‡ and Mike R. Hubbell II‡†Los Gatos Research Inc., 67 E. Evelyn Ave, Suite 3, Mountain View, CA 94041‡Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99352ABSTRACT:A new ammonia (NH3) analyzer was developed based on off-axis integrated cavity output spectroscopy...
发布时间:
2015
-
03
-
17
浏览次数：188
The relative role of soil type and tree cover on water storageand transmission in northern headwater catchments科学家应用LGR液态水同位素分析仪在北部水源集中区域监测土壤类型与植被覆盖类型对水的存储和传输的影响Josie Geris,1* Doerthe Tetzlaff,1 Jeffrey McDonnell1,2 and Chris Soulsby11 Northern Rivers Institute, School of Geosciences, University of Aberdeen, Scotland, UK2 Global Institute for Water Security, National Hydrology Research Centre, University of Saskatchewan, Saskatoon, Canada Abstract:Soil water storage and stable isotopes dynamics were investigated in dominant soil–vegetation assemblages of a wet nor...
发布时间:
2015
-
02
-
26
浏览次数：154
科学家应用LGR液态水同位素分析仪做同位素示踪研究，研究证明，重碳酸盐的修正可以提高被铀污染的含水层的生物还原修复能力。Bicarbonate impact on U(VI) bioreduction in a shallow alluvial aquiferPhilip E. Longa , Kenneth H. Williamsa, James A. Davisa, Patricia M. Foxa, Michael J. Wilkinsb, 1,Steven B. Yabusakib, Yilin Fangb, Scott R. Waichlerb, Elena S.F. Bermanc, Manish Guptac, Darrell P. Chandlerd, Chris Murrayb, Aaron D. Peacocke, Ludovic Giloteauxf, Kim M. Handleyg, 2, Derek R. Lovleyh,Jillian F. Banfieldg a Lawrence Berkeley National Laboratory, Ber...
发布时间:
2015
-
02
-
04
浏览次数：167
Direct Analysis of δ2H and δ18O in Natural and Enriched Human Urine Using Laser-Based, Off-Axis Integrated Cavity Output Spectroscopy应用LGR液态水稳定同位素分析仪测量尿液中的氢氧同位素 Elena S. F. Berman *†, Susan L. Fortson †, Steven P. Snaith †, Manish Gupta †, Douglas S. Baer †,Isabelle Chery ‡, Stephane Blanc ‡, Edward L. Melanson §, Peter J. Thomson ⊥, and John R. Speakman ⊥∥† Los Gatos Research, 67 East Evelyn Ave, Suite 3, Mountain View California 94043, United States‡ Department of Ecology, Physiology...
发布时间:
2015
-
01
-
27
浏览次数：209
LGR的专利技术—利用腔增强激光吸收光谱法，记录高吸收光谱，能够精确的测量葡萄酒中的同位素比值。LGR拥有专业的光谱污染标识软件（软件测量植物水的精确数据在权威期刊上发表过），这使得仪器可以测量葡萄酒中的甲醇和乙醇污染物，从而得到可靠的同位素比值数据。 Laser-based measurements of 18O/16O stable isotope ratios (δ18O) in wine samples应用LGR液态水稳定同位素分析仪测量葡萄酒中的稳定同位素比值18O/16O和δ18O Manish Gupta1 J Brian Leen1 Elena Simone Franklin Berman1 Aldo Ciambotti21Los Gatos Research, Mountain View, CA, USA;2Consiglio per la Ricerca e la Sperimentazione in Agricoltura, Centro di Ricerca per l’Enologia, Asti, Italy Abstract: Wine counterfeiting is an international, m...
发布时间:
2015
-
01
-
27
浏览次数：149
LGR 二氧化碳同位素分析仪最新应用：应用LGR二氧化碳同位素分析仪，通过测定肠易激综合症患者的呼出气体中的13CO2和12CO2的同位素分子比率，可以对患者体内小肠细菌过度生长情况做出正确诊断Diagnosis of small intestinal bacterial overgrowth in irritable bowel syndrome patients using high-precision stable 13CO2/12CO2 isotope ratios in exhaled breath Gourab D. Banik,a Abhijit Maity,a Suman Som,a Chiranjit Ghosh,a Sunil B. Daschakraborty,b Sujit Chaudhuri,b Shibendu Ghoshc and Manik Pradhan*ad Hydrogen breath tests (HBT) are widely used for the d...
发布时间:
2015
-
01
-
22
浏览次数：166
Short-term effects of thinning, clear-cutting and stump harvesting on methane exchange in a boreal forest关于人类对北方森林的疏伐、滥砍滥伐和树桩采伐对甲烷交换的短期影响 E. Sundqvist1, P. Vestin1, P. Crill2, T. Persson3, and A. Lindroth1 1Department of Physical Geography and Ecosystem Science, Lund University, Sweden 2Department of Geological Sciences, Stockholm University, Sweden 3Department of Ecology, Swedish University of Agricultural Sciences, Sweden原文链接：http://www.biogeosciences-discuss.net/11/4637/2014/bgd-11-4637-2014.pdf
发布时间:
2015
-
01
-
05
浏览次数：215
Short-term effects of thinning, clear-cutting and stump harvesting on methane exchange in a boreal forest关于人类对北方森林的疏伐、滥砍滥伐和树桩采伐对甲烷交换的短期影响 E. Sundqvist1, P. Vestin1, P. Crill2, T. Persson3, and A. Lindroth1 1Department of Physical Geography and Ecosystem Science, Lund University, Sweden 2Department of Geological Sciences, Stockholm University, Sweden 3Department of Ecology, Swedish University of Agricultural Sciences, Sweden 原文链接：http://www.biogeosciences-discuss.net/11/4637/2014/bgd-11-4637-2014.pdfShort-term effects of thinning, clear-cutting and stump harve12f9fc...
发布时间:
2015
-
01
-
05
浏览次数：164
In Situ Measurement of Dissolved Methane and Carbon Dioxide in Freshwater Ecosystems by Off-Axis Integrated Cavity Output Spectroscopy应用LGR离轴积分腔输出光谱技术原位测量淡水生态系统中的溶解甲烷和二氧化碳 Gonzalez-Valencia R1, Magana-Rodriguez F, Gerardo-Nieto O, Sepulveda-Jauregui A, Martinez-Cruz K, Anthony KW, Baer D, Thalasso F. AbstractA novel low-cost method for the combined, real-time, and in situ determination of dissolved methane and carbon dioxide concentrations in freshwater ecosystems was designed and developed. This method is based on the continuous sampling of water from a freshwater ecosystem to a gas...
发布时间:
2014
-
12
-
25
浏览次数：348