10 research outputs found
Nuklearne sile iz kiralne dinamike
We made an analysis of time-ordered diagrams for the two-nucleon T-matrix in chiral perturbation theory. From the analysis, it follows that low-energy nucleon dynamics is governed by the generalized dynamical equation [derived in J. Phys. A 32 (1999) 5657] with a nonlocal-in-time interaction operator. We also present an operator that parametrizes the nucleon-nucleon interaction in the 1S0 channel at leading order of the Weinberg power counting.NaÄinili smo analizu vremenski-ureÄenih dijagrama dvonukleonske T-matrice u kiralnoj teoriji smetnje. Iz te analize slijedi da nukleonsku dinamiku na niskim energijama odreÄuje poopÄena dinamiÄka jednadžba (izvedena u J. Phys. A 32 (1999) 5657] s vremenski nelokalnim operatorom meÄudjelovanja. Predstavljamo i operator koji parametrizira meÄudjelovanje nukleon-nukleon u kanalu 1S0 za vodeÄi Älan Weinbergovog brojanja potencija
Nuklearne sile iz kiralne dinamike
We made an analysis of time-ordered diagrams for the two-nucleon T-matrix in chiral perturbation theory. From the analysis, it follows that low-energy nucleon dynamics is governed by the generalized dynamical equation [derived in J. Phys. A 32 (1999) 5657] with a nonlocal-in-time interaction operator. We also present an operator that parametrizes the nucleon-nucleon interaction in the 1S0 channel at leading order of the Weinberg power counting.NaÄinili smo analizu vremenski-ureÄenih dijagrama dvonukleonske T-matrice u kiralnoj teoriji smetnje. Iz te analize slijedi da nukleonsku dinamiku na niskim energijama odreÄuje poopÄena dinamiÄka jednadžba (izvedena u J. Phys. A 32 (1999) 5657] s vremenski nelokalnim operatorom meÄudjelovanja. Predstavljamo i operator koji parametrizira meÄudjelovanje nukleon-nukleon u kanalu 1S0 za vodeÄi Älan Weinbergovog brojanja potencija
Study of some Biological and Ecological aspects of the fly Chrysomya albiceps (WIEDEMANN)(DIPTERA; CALLIPHORIDAE)
The effects of temperature on some biological aspects of Chrysomya albiceps (Wied.) were studied. The incubation, larval and pupation periods as well as mortality were calculated at constant temperature and relative humidity. The temperature 30Co was preferable to egg and larval stages, whereas the 32Co was preferred for pupal stage.Sex-ratio was affected by temperature, the results declared that male emergence of high rate compared with the female in each treatment, but this rate decreased gradually with the increase of temperature.The adults which were reared at laboratory temperature of 24Co appeared to have increased longevity in both sexes, but the female did not deposit egg ; while 30 Co was preferable for fly for egg deposition
New record of moth fly species; Psychodaalternata Say, 1824 (Diptera:Psychodidae: Psychodinae) fromIraq
PsychodaalternataSay, 1824 (Diptera : Psychodidae : Psychodinae) is newly recoded for fauna of Iraq . Shortly description and the important diagnostic characters are figured
Advances in Bioresearch O OR RI IG GI IN NA AL L A AR RT TI IC CL LE E New Records of Unidentified Ants worker (Hymenoptera: Formicidae: Myrmicinae) stored in Iraqi Natural History Museum with key to Species
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