A composition of n is an ordered collection of one or more positive integers whose sum is n. The number of summands is called the number of parts of the composition. A palindromic composition or palindrome is a composition in which the summands are the same in the given or in reverse order. Compositions may be viewed as tilings of 1-by-n rectangles with 1-by-i rectangles, 1 i n ≤ ≤ . We count t...

Different rock types (syenogranite, alkali feldspar granite and quartz syenite intruded by microgranite dikes veins) were investigated in the Nikeiba region Egypt. The main components of studied intrusive rocks, comprised granites syenite, are plagioclase, amphibole, biotite, K-feldspar different proportions. Ground gamma ray measurements show that syenogranite, have highest radioactivity (K, e...

The final closure time of the Paleo-Asian Ocean and Permo-Carboniferous tectonic settings in northern Alxa are very important but controversial issues. geochronology petrogenesis mafic igneous rocks superior clarifying regional settings. Here, we report on zircon U-Pb-Hf isotopes, biotite 40Ar/39Ar whole-rock geochemical data hornblende gabbro from Baogeqi pluton Alxa. LA-ICP MS U-Pb analysis g...

aril browning threatens production, consumption, and exports of pomegranates, because affected fruit cannot be externally distinguished from healthy fruit. this study compared the mineral, biochemical composition, and related enzyme activities in affected brown arils with healthy ones in ‘malase saveh’ pomegranates. the results indicated that concentrations of cu in the aril and k, mg, and mn i...

an eight-week experiment was carried out to determine the effects of dietary pediococcus pentosaceus as probiotic on the body composition and gut microbiota of siberian sturgeon, acipenser baerii . a total of 180 fish with mean body weight of 143±0.01g were randomly distributed into 12 200l fiberglass tanks as four treatments with three replicates, including groups fed with diet containing 2×10...

background: during the ramadan ceremony, adult muslims abstain from drinking and eating between sunrise and sunset. it seems influence on their lifestyle such as eating behavior, meal schedule and also their sleeping. these changes may effect on the endocrine and neuroendocrine circadian patterns and consequently on cardiovascular indices. this study was performed to assess the effects of ramad...

in this paper, we determine the structure of the space of multipliers of the range of a composition operator cφ that induces by the conditional expectation between two lp() spaces.

despite the care taken to ensure the quality of date collected by enumeration and sampling, the final tabulation will sometimes give obvious indication of errors in basic information. evaluation of these errors furnishes those who use such a study and sampling. more general, the finding in these studies should be helpful to others that conduct surveys. in order to compare the age composition of...

abstract leaving crop residues on the soil surface may significantly affect the behavior and activity of herbicides. to probe this effect, a factorial experiment in a randomized complete block design with three replications was conducted using two factors including different rates of wheat surface residue (0, 1250, 2500 and 3750 kg ha-1 ) and different rates of trifluralin (%48 ec) herbicide (7...

Let A be any set of positive integers and n ∈ N. A composition of n with parts in A is an ordered collection of one or more elements in A whose sum is n. A palindromic composition of n with parts in A is a composition of n with parts in A in which the summands are the same in the given or in reverse order. A Carlitz (palindromic) composition of n with parts in A is a (palindromic) composition o...