LGR氧化亞氮同位素分析儀測量水中硝酸鹽成功案例：Analytical Chemistry 文章：Combining Denitrifying Bacteria and Laser Spectroscopy for Isotopic Analyses (δ15N, δ18O) of Dissolved Nitrate通過反硝化細(xì)菌和激光同位素分析儀測定溶解硝酸鹽中的δ15N和δ18ODavid X. Soto *?, Geoff Koehler ?, and Keith A. Hobson ?? Environment Canada, 11 Innovation Boulevard, Saskatoon, Saskatchewan, Canada, S7N 3H5AbstractWe present a novel approach for nitrogen (δ15N) and oxygen (δ18O) isotopic analysis of nitrate in water based on the isotopic analysis of N2O produced from the conversion of NO3– by cultured denitrifying bacteria and off-axis integrated cavity output ...
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Nature 發(fā)表文章：In-situ unsaturated zone stable water isotope (2H and 18O) measurements in semi-arid environments using tunable o-axis integrated cavity output spectroscopy科學(xué)家應(yīng)用LGR液態(tài)水同位素分析儀在半干旱環(huán)境下原位測量不飽和帶水中2H和18O同位素比值M. Gaj1,2, M. Beyer1, P. Koeniger1, H. Wanke3, J. Hamutoko3, and T. Himmelsbach11 Federal Institue for Geosciences and Natural Resources (BGR), Stilleweg 2, Hannover, Germany2 Chair of Hydrology, Faculty of Environment and Natural Resources, University of Freiburg, Fahnenbergplatz, 79098 Freiburg, Germany3Universit...
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2015
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Inter- and intraindividual correlations of background abundances of 2H, 18O and 17O in human urine and implications for DLW measurements科學(xué)家應(yīng)用LGR同位素分析儀測定人體尿液中的2H,18O和17O豐度間的相互作用對(duì)DLW測量方法的影響E S F Berman, E L Melanson, T Swibas, S P Snaith and J R SpeakmanBackground/Objectives:The method of choice for measuring total energy expenditure in free-living individuals is the doubly labeled water (DLW) method. This experiment examined the behavior of natural background isotope abundance fluctuations within and between individuals over time to assess possible methods of accounting for varia...
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2015
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科學(xué)家應(yīng)用Campbell CPEC200閉路渦動(dòng)相關(guān)系統(tǒng)測量森林碳封存Canada: Forest Carbon SequestrationCampbell Scientific CPEC200 monitors eddy-covariance fluxes in British Columbia forest 文章下載地址：79canada-vancouver-island--CPEC200.pdf4da92e4cbee3e5c7273825cef11d6136.pdf (2.84 MB)
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2015
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Field Spectroscopy in the VNIR-SWIR Region to Discriminate between Mediterranean Native Plants and Exotic-Invasive Shrubs Based on Leaf Tannin Content 基于可見光近紅外（VNIR）和短波紅外（SWIR），科學(xué)家應(yīng)用ASD地物光譜儀測量葉片單寧的含量，從而區(qū)分地中海附近海岸的本土植物和外來入侵灌木。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...
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2015
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科學(xué)家應(yīng)用LGR氨氣分析儀快速原位機(jī)載測量空氣中氨氣的含量Fast in situ Airborne Measurement of AmmoniaUsing a Mid-Infrared Off-Axis ICOS Spectrometer科學(xué)家應(yīng)用LGR氨氣分析儀快速原位機(jī)載測量空氣中氨氣的含量，這可以幫助我們更好的分析大氣的成分和氣溶膠的組成，具有深遠(yuǎn)的意義。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...
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2015
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The relative role of soil type and tree cover on water storageand transmission in northern headwater catchments科學(xué)家應(yīng)用LGR液態(tài)水同位素分析儀在北部水源集中區(qū)域監(jiān)測土壤類型與植被覆蓋類型對(duì)水的存儲(chǔ)和傳輸?shù)挠绊慗osie 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...
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2015
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科學(xué)家應(yīng)用LGR液態(tài)水同位素分析儀做同位素示蹤研究，研究證明，重碳酸鹽的修正可以提高被鈾污染的含水層的生物還原修復(fù)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...
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2015
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Direct Analysis of δ2H and δ18O in Natural and Enriched Human Urine Using Laser-Based, Off-Axis Integrated Cavity Output Spectroscopy應(yīng)用LGR液態(tài)水穩(wěn)定同位素分析儀測量尿液中的氫氧同位素 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...
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2015
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LGR的專利技術(shù)—利用腔增強(qiáng)激光吸收光譜法，記錄高吸收光譜，能夠精確的測量葡萄酒中的同位素比值。LGR擁有專業(yè)的光譜污染標(biāo)識(shí)軟件（軟件測量植物水的精確數(shù)據(jù)在權(quán)威期刊上發(fā)表過），這使得儀器可以測量葡萄酒中的甲醇和乙醇污染物，從而得到可靠的同位素比值數(shù)據(jù)。 Laser-based measurements of 18O/16O stable isotope ratios (δ18O) in wine samples應(yīng)用LGR液態(tài)水穩(wěn)定同位素分析儀測量葡萄酒中的穩(wěn)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...
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瀏覽次數(shù)：48