نتایج جستجو برای: λ
تعداد نتایج: 27860 فیلتر نتایج به سال:
We present measurements of the Cabibbo-suppressed decays Λc → Λ 0K+ and Λc → Σ 0K+ (both first observations), Λc → Σ +K+π− (seen with large statistics for the first time), Λc → pK +K− and Λc → pφ (measured with improved accuracy). Improved branching ratio measurements for the decays Λc → Σ +K+K− and Λc → Σ +φ, which are attributed to W-exchange diagrams, are shown. We also present the first evi...
background and objectives: there is a growing trend towards investigating natural products as sources of compounds with biological effects and many researches have been carried out in order to find effective medications against many diseases. cancer is no exception and studies focusing on evaluating the effects of different materials on dna, give valuable information in cancer researches and ca...
in this paper, we first discuss about canonical dual of g-frameλp = {λip ∈ b(h, hi) : i ∈ i}, where λ = {λi ∈ b(h, hi) :i ∈ i} is a g-frame for a hilbert space h and p is the orthogonalprojection from h onto a closed subspace m. next, we provethat, if λ = {λi ∈ b(h, hi) : i ∈ i} and θ = {θi ∈ b(k, hi) :i ∈ i} be respective g-frames for non zero hilbert spaces hand k, and λ and θ are unitarily e...
We study one-dimensional Schrödinger operators H=−∂x2+V with unbounded complex potentials V and derive asymptotic estimates for the norm of resolvent, Ψ(λ):=‖(H−λ)−1‖, as |λ|→+∞, separately considering λ∈RanV λ∈R+. In each case, our analysis yields an exact leading order term explicit remainder Ψ(λ) we show these to be optimal. also discuss several extensions main results, their interrelation s...
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