Right-left symmetry of aR ⊕ bR = (a + b)R in regular rings
نویسندگان
چکیده
منابع مشابه
A theoretical survey on strength and characteristics of F•••F, Br•••O and Br•••Br interactions in solid phase
A quantum chemical investigation was carried out to study the properties of intermolecular F•••F, Br•••Br and Br•••O interactions in crystalline 1-bromo-2,3,5,6-tetrafluoro-nitrobenzene (BFNB). This system was selected to mimic the halogen-halogen as well as halogen bonding interactions found within crystal structures as well as within biological systems. We found that fluorine atoms have weak ...
متن کاملThe 1s photoabsorption transitions in Br I and Br II
Relativistic configuration interaction calculations have been performed for the 1s→np (n=4-8) photoabsorption transitions in Br I and Br II and transition energies and transition probabilities have been evaluated. These data are necessary to interpret the experiment photoabsorption spectra. The K edge energy of Br I and Br II have also been computed and compared to the existing values when avai...
متن کاملa theoretical survey on strength and characteristics of f•••f, br•••o and br•••br interactions in solid phase
a quantum chemical investigation was carried out to study the properties of intermolecular f•••f, br•••br and br•••o interactions in crystalline 1-bromo-2,3,5,6-tetrafluoro-nitrobenzene (bfnb). this system was selected to mimic the halogen-halogen as well as halogen bonding interactions found within crystal structures as well as within biological systems. we found that fluorine atoms have weak ...
متن کامل04 BR DING.indd
Loss of Imprinting (LOI) of IGF2 and over-expressed IGF2 are associated with tumorigenesis. Our previous epidemiological study found a relatively high frequency of IGF2 LOI in healthy mid-gestation pregnant women. The aim of this study is to determine whether the expression of IGF2 is associated with its imprinting status in healthy Chinese pregnant women. The IGF2 imprinting status of 300 preg...
متن کامل07 BR FELIPE.indd
BACKGROUND: Studies have demonstrated that some polymorphisms in diff erent interleukin genes may increase the risk of cancer. The aim of this study was to investigate the association between the IL-8 (rs4073) –251A/T gene polymorphism and the risk of gastric cancer (GC). PATIENTS AND METHODS: A case-control study was conducted on patients with noncardia gastric cancer. DNA was extracted from l...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Pure and Applied Algebra
سال: 1998
ISSN: 0022-4049
DOI: 10.1016/s0022-4049(97)00189-8