نتایج جستجو برای: t0) (2) rco2 (gco2 l

تعداد نتایج: 2950070  

2009
M. Maljanen B. D. Sigurdsson J. Guðmundsson H. Óskarsson J. T. Huttunen P. J. Martikainen

This article provides an overview of the effects of land-use on the fluxes of methane (CH4), nitrous oxide (N2O) and carbon dioxide (CO2) of peatlands in the Nordic countries presented in about 100 studies. In addition, the article identifies the gaps in the present knowledge on the greenhouse gas (GHG) balances associated with the 5 land-use of these northern ecosystems. Northern peatlands hav...

Journal: :The American journal of physiology 1993
J R Speakman K S Nair M I Goran

The Schoeller model for calculating rate of CO2 production (rCO2) from doubly labeled water (DLW) relies on the assumption that deuterium and oxygen-18 overestimate body water by 4 and 1%, respectively. However, the deuterium-to-oxygen-18 dilution space ratio (DSR) varies considerably, and it is unknown whether this is due to analytical or biological sources. From 161 published values in adult ...

2014
Iryna Volodymyrivna Komashynska

and Applied Analysis 3 Thus, we have E sup t∈[t0 ,T] 󵄨󵄨󵄨󵄨xn+1 (t) − xn (t) 󵄨󵄨󵄨󵄨 2 ≤ 3(L 2 1 E sup t∈[t0,T] 󵄨󵄨󵄨󵄨xn (t) − xn−1 (t) 󵄨󵄨󵄨󵄨 2 + (T − t0) 2 L 2 E sup t∈[t0 ,T] 󵄨󵄨󵄨󵄨xn (t) − xn−1 (t) 󵄨󵄨󵄨󵄨 2

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده کشاورزی و منابع طبیعی 1393

در این مطالعه رشد و ویژگی¬های تولیدمثلی 868 قطعه ماهی turcinoemacheilus bahaii، یک گونه جدید از خانواده لوچ-ماهیان (nemacheilidae) در رودخانه زاینده¬رود با نمونه¬برداری ماهیانه از بهمن ماه 1391 تا دی ماه 1392 مورد بررسی قرار گرفت. نمونه¬برداری در منطقه چشمه دیمه و خرسونک به وسیله تور پره (اندازه چشمه تورmm1) صورت گرفت. در هر دو منطقه گروه سنی ماهیان ماده بین +1 تا +5 و برای نر +1 تا +4 متغیر بو...

Journal: :SIAM J. Matrix Analysis Applications 2007
Albrecht Böttcher Jani Virtanen

we call a the symbol of the sequence {Tn} and denote Tn by Tn(a). The case where a is in L∞(T) is easy, since then ‖Tn(a)‖ → ‖a‖∞ as n → ∞. Things are more complicated for a ∈ L(T) \L∞(T). We here focus our attention on so-called FisherHartwig symbols with a single singularity, that is, we consider functions a of the form a(t) = |t− t0|φβ,t0(t)b(t) (t ∈ T) where t0 ∈ T, α is a complex number su...

Journal: :Dalton transactions 2009
Rupam Sarma Dipjyoti Kalita Jubaraj B Baruah

The reactions of 3,5-dimethylpyrazole with zinc(II)acetate dihydrate and varieties of aromatic carboxylic acids led to formation of mono-nuclear zinc complexes of composition [Zn(HDMP)2(RCO2)2] (R = C6H5, p-CH3-C6H4, p-NO2-C6H4 etc. HDMP = 3,5-dimethylpyrazole) in methanol, whereas the same reactants in dimethylformamide (DMF) gave binuclear 3,5-dimethylpyrazolato bridged zinc carboxylate compl...

Journal: :American journal of physiology. Endocrinology and metabolism 2013
Stefano Guidotti Harro A J Meijer Gertjan van Dijk

The doubly labeled water (DLW) technique is used to assess metabolic rate (MR) in free-living conditions. We investigated whether differences in the nutritional and body adiposity status affect validity of the assessment of CO2 production (rCO2) by the DLW technique. To serve this purpose, we compared calculated rCO2 by the DLW method to actual CO2 production concomitantly measured in an indire...

Journal: :محیط شناسی 0
مهری شعبانی دانشجوی گروه محیط زیست دانشکدۀ منابع طبیعی و محیط زیست دانشگاه بیرجند، بیرجند محمد حسین صیادی دانشیار گروه محیط زیست دانشکدۀ منابع طبیعی و محیط زیست دانشگاه بیرجند، بیرجند محمدرضا رضایی دانشیار گروه محیط زیست دانشکدۀ منابع طبیعی و محیط زیست دانشگاه بیرجند، بیرجند

evaluation of carbon sequestration ability by chlorella vulgaris in water with different salinity expanded abstractintroductionnowadays, cultivation of microalgae in order to reduce co2 has gained attention all around the world. one of the outstanding features is that photosynthetic efficiency of microalgae is greater than that of terrestrial plants. carbon dioxide (co2) has been known as one o...

Journal: :Inorganica Chimica Acta 2021

Cyclic voltammetry and spectroelectrochemistry (e.p.r.) were used to investigate the mechanisms implied in electrocarboxylation of chloroacetonitrile (Cl-CH2-CN, noted RCl) mediated by [Ni(II)(terpy)2]2+. The oxidative addition on electrogenerated [Ni(I)(terpy)]+ yields an alkyl-nickel R-Ni(III) complex which is reduced into alkyl-nickel(II). E.p.r study shows that homolytic nickel-carbon bond ...

Journal: :Experimental Mathematics 2016
Tanbir Ahmed Daniel Schaal

Let L(t) represent the equation x1 + x2 + · · · + xt−1 = xt. For k > 1, 0 6 i 6 k − 1, and ti > 3, the generalized Schur number S(k; t0, t1, . . . , tk−1) is the least positive integer m such that for every k-colouring of {1, 2, . . . ,m}, there exists an i ∈ {0, 1, . . . , k − 1} such that there exists a solution to L(ti) that is monochromatic in colour i. In this paper, we report twenty-six p...

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