• Net fractionation of hydrogen isotopes in n-alkanoic

    Cited by: 2
  • (PDF) Carbon isotope fractionation including ...

    D is the total discrimination including photosynthetic and post-photosynthetic (i.e. C discrimination between plant and atmosphere) while e is the post-photosynthetic fractionation (i.e. C ...

  • Carbon isotope fractionation including photosynthetic

    C isotope fractionation during C 3 plant photosynthesis results from the isotopic effects of diffusion of CO 2 through stomata and carboxylation by RuBisCO during photosynthesis, such that: (2) Δ l e a f = a + (b-a) c i c a where c a and c i are the CO 2 concentrations in

  • Ion-pairing reversed-phase liquid chromatography ...

    Ion-pairing reversed-phase liquid chromatography fractionation in combination with isotope labeling reversed-phase liquid chromatography–mass spectrometry for comprehensive metabolome profiling ... dimensions for peptide or protein separation; modifications of peptides or proteins after the 1st dimension separation (e.g ... S.E.G. Porter, S.C ...

  • Adsorptive fractionation of dissolved organic matter

    Adsorptive fractionation of DOM upon interaction with SWCNTs was observed and found to be concentration-dependent ().Interestingly, an increase in DOM concentration resulted in an increase in the relative percentage of the hydrophobic fractions (HoA and HoN) for both non-adsorbed and bulk DOM (i.e

  • Fractionation of apple procyanidins according to their ...

    3.2. NP-HPLC separation and fractionation of methyl acetate extract of ACTs using mobile phase containing hexane. Although the silica NP-HPLC technique reported by Rigaud et al. is an excellent separation method of procyanidins according to their degree of polymerization, the composition of the mobile phase (i.e. dichloromethane–methanol–formic acid–water) considerably limits the ...

  • Hydrogen isotope fractionation in leaf waxes in the ...

    2018-10-18  Hydrogen isotope fractionation in leaf waxes ... nations of plant source water seasonality and e app for the Arctic will improve the dD ... Porter et al., 2016), with implica-tions for the Earth’s equilibrium climate sensitivity and future response to rising greenhouse gases. For example,

  • 13 C isotope fractionation during rhizosphere

    Additionally, in the case of growing a C 4 plant (e.g. maize) in a C 3 soil, neglecting 13 C fractionation during rhizosphere respiration will result in substantial underestimation of root-derived CO 2, and overestimation of soil-derived CO 2 in planted treatments.

  • Diversity of Sulfur Isotope Fractionations by Sulfate ...

    Batch culture experiments were performed with 32 different sulfate-reducing prokaryotes to explore the diversity in sulfur isotope fractionation during dissimilatory sulfate reduction by pure cultures. The selected strains reflect the phylogenetic and physiologic diversity of presently known sulfate reducers and cover a broad range of natural marine and freshwater habitats.

  • (PDF) Isolation and Subfractionation of Mitochondria

    8-mM cystein e, 0.1% BSA, and 1% PVP-4 0 with wide success in a va riety of plant tissues. Following preparation of the medium and the plant material, the three most

  • Explaining isotope trophic‐step fractionation: why ...

    1 . An assumed constant trophic fractionation of 15 N/ 14 N between consumer and diet (usually 34 for diet–muscle tissue differences) allows inferences to be made about feeding interactions and trophic level in food web studies. However, considerable variability surrounds this constant, which may conceal subtle differences about the trophodynamics of consumers.

  • Cell fractionation biochemistry and the origins of 'cell ...

    2016-11-5  Cell fractionation biochemistry and the origins of 'cell biology' Many biochemists actively practising today might be at least a little surprised to hear that the basic way in which their field or discipline proceeds was set down in the years immediately fol- lowing the Second World War. 'Big

  • 全球蛋白质分离市场 - 成长,趋势,预测(2017年~2022年) -GII

    5. Porter's Five Force Analysis 5.1 Bargaining Power of Suppliers 5.2 Bargaining Power of Buyers 5.3 Threat of New Entrants 5.4 Threat of Substitute Products and Services 5.5 Degree of Competition 6. Market Segmentation 6.1 By Fractionation Methodology

  • Hydrogen isotope fractionation in leaf waxes in the ...

    2018-10-18  Hydrogen isotope fractionation in leaf waxes ... nations of plant source water seasonality and e app for the Arctic will improve the dD ... Porter et al., 2016), with implica-tions for the Earth’s equilibrium climate sensitivity and future response to rising greenhouse gases. For example,

  • Fractionation of UV and VUV Pretreated Natural

    2019-3-12  Recent studies have examined the potential of ultraviolet (UV, 254 nm) and vacuum ultraviolet (VUV, 185 nm + 254 nm) irradiation as either a pretreatment for a biological process or as a sole treatment for the removal of natural organic matter as dissolved organic carbon from drinking water. To understand the potential of UV and VUV irradiation followed by subsequent biological treatment ...

  • Condensed tannins in grain sorghum. Isolation ...

    2019-5-25  Select Plant Tannins Induce IL-2Rα Up-Regulation and Augment Cell Division in γδ T Cells. The Journal of Immunology 2007 , 179 (10) , 6468-6478. DOI: 10.4049/jimmunol.179.10.6468.

  • Hydrogen isotopic composition of plant leaf wax in response ...

    2013-7-23  Schefuβ E, Schputen S, Schneider R R. 2005. Climatic controls on central African hydrology during the past 20,000 years. Nature, 437: 1003–1006. Sessions A L. 2006. Seasonal changes in D/H fractionation accompanying lipid biosynthesis in Sparina Smith F

  • Diversity of Sulfur Isotope Fractionations by Sulfate ...

    Batch culture experiments were performed with 32 different sulfate-reducing prokaryotes to explore the diversity in sulfur isotope fractionation during dissimilatory sulfate reduction by pure cultures. The selected strains reflect the phylogenetic and physiologic diversity of presently known sulfate reducers and cover a broad range of natural marine and freshwater habitats.

  • 文章详细信息

    [15]SCALBERT A.Quantitative methods for the estimation of tannins in plant tissues[M]//HEMINGWAY R W,LAK P E.Plant polyphenols,New York:Plenum Press,1992:259-260. [16]BOREN B,WANISKA R D.Sorghum seed color as an indicator of tannin

  • Post‐photosynthetic fractionation of stable carbon ...

    Please check your email for instructions on resetting your password. If you do not receive an email within 10 minutes, your email address may not be registered, and ...

  • DISTILLATION - Thermopedia

    For some mixtures, a constant boiling mixture or azeotrope exists where the composition of the vapor is the same as that of the liquid. For example, the equilibrium line of benzene and ethanol shown in Figure 1b has an azeotrope at 0.55 mol fraction of benzene. This is a low-boiling point azeotrope, i.e., it has a boiling temperature lower than that of both benzene and ethanol.

  • Molecules Free Full-Text Plant Phenolics: Extraction ...

    Plant phenolics include phenolics acids, flavonoids, tannins and the less common stilbenes and lignans ().Flavonoids are the most abundant polyphenols in our diets. The basic flavonoid structure is the flavan nucleus, containing 15 carbon atoms arranged in three rings (C6-C3-C6), which are labeled as A, B and C. Flavonoid are themselves divided into six subgroups: flavones, flavonols ...

  • Isotope Fractionation Processes of Selected Elements ...

    Black JR, Epstein E, Rains WD, Yin Q-Z, Casey WD (2008) Magnesium isotope fractionation during plant growth. Environ Sci Technol 42:7831–7836 CrossRef Google Scholar Black JR, Kavner A, Schauble EA (2011) Calculation of equilibrium stable isotope partition

  • INEOS Olefins Polymers USA Sites

    The Hobbs fractionation complex produces three main products - E/P, propane and bottoms liquids. Via pipeline, Hobbs has the capability to annually ship 2.3 billion pounds of E/P to the INEOS Olefins Polymers USA Chocolate Bayou Works facility in Alvin, Texas to be used as feedstock, 385 million pounds of propane and 770 million pounds of ...

  • Phylogenomic Synteny Network Analysis of MADS ... -

    Conserved genomic context provides critical information for comparative evolutionary analysis. With the increase in numbers of sequenced plant genomes, synteny analysis can provide new insights into gene family evolution. Here, we exploit a network analysis approach to organize and interpret massive pairwise syntenic relationships. Specifically, we analyzed synteny networks of the MADS-box ...

  • Use of Porter's reagents for the characterisation of ...

    2013-1-11  Phytochemistry 8 2333-2340. Cattell D J, Nursten H E 1976 Fractionation and chemistry of ethyl acetate-soluble thearubigins from black tea. Phytochemistry 15 1967-1970. Clausen T P, Reichardt P B, Bryant J P, Provenza F 1992 Condensed tannins in plant

  • A case for in vivo mass‐independent fractionation of ...

    There are two known mechanisms for mass‐independent fractionation of mercury, i.e., the nuclear volume effect and the magnetic isotope effect. While the data are insufficient to serve as proof, the magnitude of the mass‐independent effect and the nearly equal enrichment of 199 Hg and 201 Hg seem most suggestive of a magnetic isotope effect.

  • Natural product isolation – how to get from biological ...

    Natural product isolation – how to get from biological material to pure compounds. Franz Bucar * a, Abraham Wube a and Martin Schmid b a Institute of Pharmaceutical Sciences, Department of Pharmacognosy, University of Graz, Universitätsplatz 4, 8010 Graz, Austria. E-mail: [email protected]; Fax: +43 316 380 9860; Tel: +43 316 380 5531 b Institute of Pharmaceutical Sciences,

  • Differential Subcellular Localization and Expression of ...

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  • Both available from PubMed.

    Subcellular fractionation techniques were instrumental to the discovery of several organelles, particularly the lysosomes and the peroxisomes. These, and related discoveries resulted in Nobel prizes to: Palade, Porter and De Duve in 1974. The ability to correlate the fact that certain enzymatic activities sedimented with similar kinetics with ...

  • Differential Subcellular Localization and Expression of ...

    位置: 8600 Rockville Pike, Bethesda, MD
  • Both available from PubMed.

    Subcellular fractionation techniques were instrumental to the discovery of several organelles, particularly the lysosomes and the peroxisomes. These, and related discoveries resulted in Nobel prizes to: Palade, Porter and De Duve in 1974. The ability to correlate the fact that certain enzymatic activities sedimented with similar kinetics with ...

  • The Connected Isotopic Water Cycle in the

    Fractionation describes the vapor pressure‐dependent equilibrium fractionation, or the mass‐dependent kinetic fractionation that accompanies molecular diffusion. Due to fractionation effects, isotopic species respond slightly differently to hydrologic processes (e.g., through different rates of evaporation and associated latent heating ...

  • Specificity assessment from fractionation experiments ...

    A major characteristic parameter of the fractionation curve is the transition stringency, which is defined as the mid‐point of the transition region (e.g. 62% formamide for the fractionation curves in Fig. 2 C, 55% formamide in Fig. 2 D). Transition stringencies were highly reproducible for each probe in independent experiments, on separate ...

  • Differential Subcellular Localization and Expression of ...

    ATP sulfurylase and 5′-adenylylsulfate (APS) reductase catalyze two reactions in the sulfate assimilation pathway. Cell fractionation of Arabidopsis leaves revealed that ATP sulfurylase isoenzymes exist in the chloroplast and the cytosol, whereas APS reductase is localized exclusively in chloroplasts. During development of Arabidopsis plants the total activity of ATP sulfurylase and APS ...

  • Fractionation of nitrogen isotopes by animals: a

    Fractionation of nitrogen isotopes by animals: a further complication to the use of variations in the natural abundance of 15N for tracer studies - Volume 90 Issue 1 - K. W. Steele, R. M. Daniel

  • Endemism in Wyoming plant and insect herbivore

    Endemism in Wyoming plant and insect herbivore communities during the early Eocene hothouse - Volume 45 Issue 3 - Ellen D. Currano, Esther R. S. Pinheiro, Robert Buchwaldt, William C.

  • Tripsacum De novo Transcriptome Assemblies Reveal

    the plant genome vol. 11, no. 3 november 2018 1 of 13 T original research Tripsacum De novo Transcriptome Assemblies Reveal Parallel Gene Evolution with Maize after Ancient Polyploidy Christine M. Gault,* Karl A. Kremling, and Edward S. Buckler ABSTRACT Plant genomes reduce in

  • Subcellular fractionation of tissue culture cells: Trends ...

    Subcellular fractionation has two major steps, (1) the homogenization of the cells and (2) the subsequent separation of the organelles. The homogenization step is discussed with reference to the problems encountered using tissue culture cells. Promising techniques for the isolation of specific compartments are illustrated using the isolation of the endosomal compartment as the example.

  • Identification of a plant isoflavonoid that causes

    位置: 8600 Rockville Pike, Bethesda, MD