نتایج جستجو برای: in 1931 since then
تعداد نتایج: 17020479 فیلتر نتایج به سال:
we show that when both sources ( lepton flavor violation sources and cp-violating phases) are present, the electric dipole moment of the electron, $d_e$, receives a contribution from the phase of the trilinear $a$-term of staus, $phi_{a_ au}$. for $phi_{a_ au}=pi/2$, the value of $d_e$, depending on the ratios of the lfv mass elements, can range between zero and three orders of magnitude a...
Mountain glaciers and ice caps are undergoing rapid mass loss but rates of present-day changes models future projections both lack long-term (centennial-scale) context. Here, we reconstruct the maximum glacier extent surface Jostedalsbreen, which is largest in mainland Europe, during Little Ice Age (LIA) ∼ 1740 to 1860. The LIA ice-covered area was 568 km2 volume between 61 km3 91 km3. We show ...
for several years, researchers in familiarity of efl teachers with post-method and its role in second and foreign language learners’ productions have pointed out that the opportunity to plan for a task generally develops language learners’ development (ellis, 2005). it is important to mention that the critical varies in language teaching was shown is the disappearances of the concept of method ...
In connection with the following case it would be of interest to know what is the lowest recorded weight of a surviving infant. A coolie woman, Tanti by caste, aged about sixteen years, came for treatment for malarial fever to the hospital on this estate on 23rd February, 1931. Her haemoglobin percentage was only 40, so she was treated for hookworm as well as malaria, and on 2nd April, 1931, he...
This perspective highlights the mean ergodic theorem established by John von Neumann and the pointwise ergodic theorem established by George Birkhoff, proofs of which were published nearly simultaneously in PNAS in 1931 and 1932. These theorems were of great significance both in mathematics and in statistical mechanics. In statistical mechanics they provided a key insight into a 60-y-old fundam...
We have known about the strong association between AS and the HLA-B*27 (B*27) gene for the past 40 years; however, the mechanism with which only some allomorphs of the HLA-B27 molecule, as well as some other HLA class I molecules, are involved in the occurrence of SpAs is still unclear [1]. In this issue of Rheumatology, Cauli et al. [2] present data that may aid our understanding of this mecha...
the west of esfahan province, iran, is one of the most important agricultural areas throughout the country due to the climate variability and life-giving water of zayanderood river. rice is one of the major and economic crops in this area. the most important climatic elements in agricultural activities which should be considered include temperature, relative humidity, precipitation and wind. so...
This article demonstrates the invalidity of Theorem VI in Gödel’s 1931, showing that propositions (15) and (16), derived from the definition 8.1, in its proof, are false in PA. Introduction. Developed as a consequence of the crisis of the foundation of mathematics due to the discovery of the antinomies, Hilbert’s formalism planned as criterions of adequacy for the axiomatic systems, the achieve...
Ишемическая болезнь сердца (ИБС) остается главной причиной смерти при сердечно-сосудистых заболеваниях [1]. Внедрение новых технологий (экстренная реваскуляризация миокарда, системный тромболизис) позволило снизить госпитальную летальность у больных с острым инфарктом миокарда, но не повлияло значимо на общую сердечно-сосудистую смертность. Коррекция факторов риска ИБС представляется очень важн...
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