نتایج جستجو برای: Artimisia ketone

تعداد نتایج: 8542  

ژورنال: :دو فصلنامه تحقیقات ژنتیک و اصلاح گیاهان مرتعی و جنگلی ایران 2011
فرزانه غلامی قاسمعلی دیانتی تیلکی بهزاد بهتری

ترکیبات آللوپاتیکی، فرایندهای بیوشیمیایی و فیزیولوژیکی گیاهان مجاور خود را تحت تأثیر قرار می­دهند. asso. artimisia herba alba گیاهی بوته­ای و پایا می­باشد که انتشار زیادی در مراتع ایران دارد. در این مطالعه تاثیر آللوپاتیکی غلظت­های مختلف اسانس گیاه asso. artimisia herba alba بر شاخص­های جوانه­زنی (درصد و سرعت جوانه­زنی) و عامل های رشد گیاه چه (طول ریشه­چه و ساقه­چه، وزن تر و خشک گیاه چه) در دو ...

بهزاد بهتری فرزانه غلامی قاسمعلی دیانتی تیلکی,

ترکیبات آللوپاتیکی، فرایندهای بیوشیمیایی و فیزیولوژیکی گیاهان مجاور خود را تحت تأثیر قرار می­دهند. Asso. Artimisia herba alba گیاهی بوته­ای و پایا می­باشد که انتشار زیادی در مراتع ایران دارد. در این مطالعه تاثیر آللوپاتیکی غلظت­های مختلف اسانس گیاه Asso. Artimisia herba alba بر شاخص­های جوانه­زنی (درصد و سرعت جوانه­زنی) و عامل‌های رشد گیاه‌‌چه (طول ریشه­چه و ساقه­چه، وزن تر و خشک گیاه‌‌چه) در د...

Background. The acute ingestion of ketone body supplements can improve exercise responses such as oxygen consumption and blood lactate. Additionally, ketone body supplements show increases in circulating βhb concentration, matching those of someone in a state of nutritional ketosis. Studies testing ketone body supplements have reported different results in exercise response and varying gastroin...

2017
Katie M. Cergol Peter Turner Mark J. Coster

The first examples of the directed, boron-mediated aldol reaction between different ketones are presented. Transformation of a variety of ketones to their corresponding boron enolates with Chx2BCl/Et3N, followed by reaction with acceptor ketones in diethyl ether, and oxidation of the resultant boron aldolate (H2O2, MeOH/pH 7 buffer), provided the aldol addition products. The reaction was most f...

Journal: :iranian journal of veterinary medicine 2012
hadi gholampour peyman asadian ahmad erfanmanesh mahdi jahantigh

backgrounds: subclinical ketosis can cause greater economic loss due to a lack of clinical symptoms. objectives: the present study was aimed to design a chemical method for measuring serum ketone bodies in the affected subclinical cows. methods: acetoacetate concentrations were measured using a nitroprusside reaction and b-hydroxy butyric acid (bhba) which was oxidized to acetoacetate using nan...

Geoffrey Hallas Naghi Saadatjou,

One series of half-analogues of Michler’s ketone containing one or more terminal methoxysubstituents with variable tertiary amino groups have been used in this study. NMR spectralresults for the parent ketones confirm earlier findings that ortho proton shifts are apparentlyindependent from steric effects in derivatives of Michler’s ketone because the ring current andcarbonyl-induced shifts are ...

Fatemeh Derakhshan-Panah Malihe Safaiee, Mohammad Ali Zolfigol, Mohammad Mokhlesi

Silica Vanadic Acid, SVA, (oxo-vanadium has been supported on silica) as a dual Lewis and Bronsted acid ability was prepared and efficiently catalyzed one-pot multi-component condensation of enolizable ketones or alkyl acetoacetates with aromatic aldehydes, acetonitrile and acetyl chloride. The described reaction was produced β-acetamido ketone or ester derivatives in high to excellent yields i...

In this study, NRTL and UNIQUAC thermodynamic models were used to predict the composition of ternary mixtures of solvents+ m/o/p-cresol+ water in organic and aqueous phases. Various solvents are used for the separation of cresols from water. In this study, methyl propyl ketone, methyl isopropyl ketone, methyl butyl ketone, and methyl isobutyl ketone solvents were investigated. Intermolecular in...

Journal: :Journal of the American Chemical Society 2003
Pinjing Zhao David B Collum

Mechanistic studies of the enolization of 2-methylcyclohexanone mediated by lithium hexamethyldisilazide (LiHMDS; TMS2NLi) in toluene and toluene/triethylamine (Et3N) mixtures are described. Structural studies of LiHMDS/ketone mixtures in toluene reveal cyclic dimer (TMS2NLi)2(ketone). Rate studies using in situ IR spectroscopy show the enolization proceeds via a dimer-based transition structur...

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