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Bogusлaw Misterkiewicz 《Journal of organometallic chemistry》1982,224(1):43-47
An alternative method for the preparation of 1-ferrocenylalkyl alcohols has been developed. This involves condensation of ferrocene with carbonyl compounds in concentrated sulfuric acid and addition of the resulting solutions of 1-ferrocenylalkylium ions into aqueous sodium bicarbonate. The mixtures are then treated with thioglycolic acid and the S-(1-ferrocenylalkyl)thioglycolic acids purified via sodium salts and hydrolysed in the presence of copper powder to give 1-ferrocenylalkyl alcohols in good yields. 相似文献
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л. Д. кУДРьВцЕВ 《Analysis Mathematica》1992,18(3):223-236
ДОкАжАНО, ЧтО Дль тОгО, ЧтОБы Дльr РАж ДИФФЕРЕНцИРУЕМОИ НА пРОМЕжУткЕ [А, + ∞) ФУНкцИИf сУЩЕстВОВА л тАкОИ МНОгОЧлЕН (1) $$P(x) = \mathop \Sigma \limits_{\kappa = 0}^{r - 1} a_k x^k ,$$ , ЧтО (2) $$\mathop {\lim }\limits_{x \to + \infty } (f(x) - P(x))^{(k)} = 0,k = 0,1,...,r - 1,$$ , НЕОБхОДИМО И ДОстАтО ЧНО, ЧтОБы схОДИлсь ИН тЕгРАл (3) $$\int\limits_a^{ + \infty } {dt_1 } \int\limits_{t_1 }^{ + \infty } {dt_2 ...} \int\limits_{t_{r - 1} }^{ + \infty } {f^{(r)} (t)dt.}$$ ЕслИ ЁтОт ИНтЕгРАл сх ОДИтсь, тО Дль кОЁФФИц ИЕНтОВ МНОгОЧлЕНА (1) ИМЕУт МЕс тО ФОРМУлы $$\begin{gathered} a_{r - m} = \frac{1}{{(r - m)!}}\left( {\mathop \Sigma \limits_{j = 1}^m \frac{{( - 1)^{m - j} f^{(r - j)} (x_0 )}}{{(m - j)!}}} \right.x_0^{m - j} + \hfill \\ + ( - 1)^{m - 1} \left. {\mathop \Sigma \limits_{l = 0}^{m - 1} \frac{{x_0^l }}{{l!}}\int\limits_a^{ + \infty } {dt_1 } \int\limits_{t_1 }^{ + \infty } {dt_2 ...} \int\limits_{t_{m - l - 1} }^{ + \infty } {f^{(r)} (t_{m - 1} )dt_{m - 1} } } \right),m = 1,2,...,r. \hfill \\ \end{gathered}$$ ДОстАтОЧНыМ, НО НЕ НЕОБхОДИМыМ Усл ОВИЕМ схОДИМОстИ кРА тНОгО ИНтЕгРАлА (3) ьВльЕтсь схОДИМОсть ИНтЕгРАл А \(\int\limits_a^{ + \infty } {x^{r - 1} f^{(r)} (x)dx}\) 相似文献
3.
A.A. MикaбepидэeB.H. Oчкиh H.H. Coбoлeb 《Journal of Quantitative Spectroscopy & Radiative Transfer》1972
The line-reversal method for determination of vibrational temperatures of molecules in their ground states has been applied to nonequilibrium, low-pressure plasmas. The feasibility of employing low-resolution apparatus is demonstrated. The method was used for measurements on a series of vibrational-rotational transitions with allomance for anharmonicities. The apparatus is described; measurements were carried out in disharges representative of CO2-lasers. The accuracy of measurement is discussed. 相似文献
4.
и.B. Bийц л.B. Гypвич A.и. Кoбьiляhcкий A.Д. Cmиphoв A.A. Cycлoв 《Journal of Quantitative Spectroscopy & Radiative Transfer》1974,14(3):221-231
A method is proposed for determining the energy difference of noncombining electronic states and the type of ground electronic state of molecules, based on studying the temperature dependence of integral absorption coefficients of molecular bands in a reflected shock wave plasma over a wide range of temperatures. The method is used to determine the relative position of singlet and triplet ZrO electronic states. As the result of measurements of integral absorption coefficients of 0, 0 bands of and systems in the temperature interval 3370–5200°K, it is shown that 1Σ+ state is the ZrO ground state, whilst T0(a3Δ) = 1700 ± 250 cm-1. 相似文献
5.
П. Я. Асамսаиս В. А. Камսискսŭ Е. Д. ОзսаШɞսлս Г. А. Теɞза∂зе 《Isotopes in environmental and health studies》2013,49(7):275-277
A prompt activation technique – detection of the α-particles with surface barrier silicon and solid state track detectors, detection of the γ rays with (GeLi) detector – based on the 10B(n, α)7Li nuclear reaction was applied for boron determination using a time-of-flight technique on the IBR-30 pulsing reactor. The method was used for measurement of the boron concentration and distribution in bean and maize leaves. 相似文献
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