Results 51 to 60 of about 3,714 (170)

Activité larvicide sur Anopheles gambiae Giles et composition chimique des huiles essentielles extraites de quatre plantes cultivées au Cameroun [PDF]

open access: yesBiotechnologie, Agronomie, Société et Environnement, 2009
Larvicidal activity against Anopheles gambiae Giles and chemical composition of essential oils from four plants cultivated in Cameroon. The chemical composition of the essential oils obtained by hydrodistillation of dry leaves from Cymbopogon citrates ...
Tchoumbougnang F.   +6 more
doaj  

Natural Carbon Isotope Composition Distinguishes Compound Groups of Biogenic Volatile Organic Compounds (BVOC) in Two Mediterranean Woody Species

open access: yesFrontiers in Forests and Global Change, 2019
Our knowledge on the biosynthesis of several biogenic volatile organic compounds (BVOCs) is still limited. In this regard, natural abundant stable carbon isotope ratios (δ13C) of BVOCs may provide a powerful tool to evaluate different metabolic pathways.
Simon Haberstroh   +8 more
doaj   +1 more source

A new feedback mechanism linking forests, aerosols, and climate [PDF]

open access: yes, 2003
International audienceThe possible connections between the carbon balance of ecosystems and aerosol-cloud-climate interactions play a significant role in climate change studies.
A. Reissell   +15 more
core   +4 more sources

Purification and Characterization of an Acyclic Monoterpene Primary Alcohol:NADP+ Oxidoreductase from Catmint (Nepeta racemosa)

open access: yesArchives of Biochemistry and Biophysics, 1995
A soluble monoterpene primary alcohol:NADP+ oxidoreductase has been purified to apparent homogeneity from leaves of the catmint, Nepeta racemosa. The purified enzyme consisted of two polypeptides, with molecular masses of 42,000 and 40,000 Da, and contained zinc ions.
Hallahan, David L.   +6 more
openaire   +2 more sources

Structure–Activity Relationship Study of Acyclic Terpenes in Blood Glucose Levels: Potential α-Glucosidase and Sodium Glucose Cotransporter (SGLT-1) Inhibitors

open access: yesMolecules, 2019
Twelve terpenoids were evaluated in the treatment of type 2 diabetes mellitus: seven monoterpenes (geranyl acetate (1), geranic acid (2), citral (3), geraniol (4), methyl geranate (5), nerol (6), and citronellic acid (7)), three sesquiterpenes (farnesal (
Miguel Valdes   +2 more
doaj   +1 more source

Gas-phase products and secondary aerosol yields from the ozonolysis of ten different terpenes [PDF]

open access: yes, 2006
The ozonolyses of six monoterpenes (α-pinene, β-pinene, 3-carene, terpinolene, α-terpinene, and myrcene), two sesquiterpenes (α-humulene and β-caryophyllene), and two oxygenated terpenes (methyl chavicol and linalool) were conducted individually in ...
Bahreini, Roya   +8 more
core   +2 more sources

Izoliranje in karakteriziranje eteričnih olj iz storžev navadne smreke (Picea abies Karst.), evropskega macesna (Larix decidua Mill.) in rdečega bora (Pinus sylvestris L.) [PDF]

open access: yes, 2017
Preučevana je bila ekstrakcija eteričnih olj iz svežih storžev navadne smreke, rdečega bora in evropskega macesna ter njihova kemijska karakterizacija z metodo plinske kromatografije.
Tišler, Vesna   +3 more
core  

Secondary metabolites of alchemilla persica growing in Iran (East Azarbaijan) [PDF]

open access: yes, 2015
Phytochemical investigations of Alchemilla persica Rothm. growing in Iran were performed taking into account both the volatile and polar constituents. The hydrodistilled essential oil was analysed by GC-MS that revealed the presence of diterpenoids (19.6
Afshar, Fariba Heshmati   +4 more
core   +1 more source

Descriptors for terpene esters from chromatographic and partition measurements: Estimation of human odor detection thresholds [PDF]

open access: yes, 2020
We have used gas chromatographic retention data together with other data to obtain Abraham descriptors for 30 terpene esters. These include the air-water partition coefficient, as log Kw, for which no experimental values are available for any terpene ...
Abraham, Michael H   +2 more
core  

Measurements of Volatile Organic Compounds Using Proton Transfer Reaction - Mass Spectrometry during the MILAGRO 2006 Campaign [PDF]

open access: yes, 2009
Volatile organic compounds (VOCs) were measured by proton transfer reaction – mass spectrometry (PTR-MS) on a rooftop in the urban mixed residential and industrial area North Northeast of downtown Mexico City as part of the Megacity Initiative – Local ...
André, M.   +7 more
core   +3 more sources

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