نتایج جستجو برای: organic components

تعداد نتایج: 583132  

ژورنال: علوم آب و خاک 2008
شریعتمداری, حسین, یوسفی, معصومه , حاج عباسی, محمد علی ,

  Adopting proper agricultural management and conserving soil organic matter are important components of sustainable agriculture. Soil organic matter content is a key attribute in soil quality. Labile organic matter pools can be considered as suitable indicators of soil quality that are very sensitive to changes in soil management practices. This research was carried out to investigate some org...

Journal: :Journal of the American Chemical Society 2009
Inhar Imaz Marta Rubio-Martínez Wojciech J Saletra David B Amabilino Daniel Maspoch

Long chiral metal-organic nanofibers can be grown using conventional coordination chemistry and biologically derived components in a diffusion controlled growth procedure.

2015
Carola Strassner Ivana Cavoski Raffaella Di Cagno Johannes Kahl Emmanuelle Kesse-Guyot Denis Lairon Nicolas Lampkin Anne-Kristin Løes Darja Matt Urs Niggli Flavio Paoletti Sirli Pehme Ewa Rembiałkowska Christian Schader Matthias Stolze

Organic production and consumption provide a delineated food system that can be explored for its potential contribution to sustainable diets. While organic agriculture improves the sustainability performance on the production side, critical reflections are made on how organic consumption patterns, understood as the practice of people consuming significant amounts of organic produce, may also be...

Journal: :پژوهش های تولید گیاهی 0
کیانوش حسن زاده دانشگاه علوم کشاورزی و منابع طبیعی گرگان خدایار همتی عضو هیئت علمی مهدی علیزاده عضو هیئت علمی

in this research, the effects of organic fertilizers (bovine, sheep, leaf mould and vermicompost fertilizers) combined with foliar application of salicylic acid (sa) at the rate of 0, 10-2, 10-4 and 10-6 m on essential oil percentage and some secondary metabolites of lemon balm were investigated. the experiment was conducted as complete randomized block design with factorial arrangement in pots...

2015
K. M. Cerully A. Bougiatioti J. R. Hite H. Guo L. Xu N. L. Ng R. Weber A. Nenes

The formation of secondary organic aerosols (SOAs) combined with the partitioning of semivolatile organic components can impact numerous aerosol properties including cloud condensation nuclei (CCN) activity, hygroscopicity, and volatility. During the summer 2013 Southern Oxidant and Aerosol Study (SOAS) field campaign in a rural site in the southeastern United States, a suite of instruments inc...

In this paper, a genetic algorithm (GA) has been used to predict the vapor pressure of pure organic compounds based on Riedel equation. Initially, the coefficients of Riedel equation were optimized. Then, a new term was added to the original Riedel equation to reduce error of the model in prediction of vapor pressures of pure materials. 110 components at two different pressures (10 and 100 kPa)...

2016
Antonio Fernandez Jesus Ferrando-Soria Eufemio Moreno Pineda Floriana Tuna Iñigo J. Vitorica-Yrezabal Christiane Knappke Jakub Ujma Christopher A. Muryn Grigore A. Timco Perdita E. Barran Arzhang Ardavan Richard E.P. Winpenny

Quantum information processing (QIP) would require that the individual units involved--qubits--communicate to other qubits while retaining their identity. In many ways this resembles the way supramolecular chemistry brings together individual molecules into interlocked structures, where the assembly has one identity but where the individual components are still recognizable. Here a fully modula...

2006

HPLC is a separation technique in which the mobile phase is an aqueous solution or an organic solvent that is miscible with water, and the compounds of interest are dissolved in water or an organic solvent such as methanol. The major advantage of the technique is the flexibility it allows in choosing the stationary and mobile phases that best separate the particular sample components. More than...

Journal: :Analytical chemistry 2004
Berk Oktem Michael P Tolocka Murray V Johnston

A new method, photoionization aerosol mass spectrometry (PIAMS), is described for real-time analysis of organic components in airborne particles below approximately 300 nm in diameter. Particles are focused through an aerodynamic lens assembly into the mass spectrometer where they are collected on a probe in the source region. After a sufficient amount of sample has been collected, the probe is...

2013
Benoit Tesson Mark Hildebrand

Organic components associated with diatom cell wall silica are important for the formation, integrity, and function of the cell wall. Polysaccharides are associated with the silica, however their localization, structure, and function remain poorly understood. We used imaging and biochemical approaches to describe in detail characteristics of insoluble organic components associated with the cell...

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