compounds containing triazene ring structure are cytotoxic agents and clinically used as antitumor alkylating agents. in this study, a series of triazene derivatives holding alkyl and aryl moieties were synthesized and proved to be potent cytotoxic agents in-vitro particularly against eight cancer cell lines (pc3, ht29, hela, hl60, jurkat, k562, mcf7, hepg2) and a non-cancerous cell line (huvec...

fear of crime is a very prevalent issue today. it challenges the safety of cities. for this reason it has gained considerable attention among the sociologists and criminologists over the last 20 years. whilst men experiencing relatively high rates of violence, they report their fear of crime less than women. in the contrary women have a much greater fear of crime than men, but are victimized le...

Ion exclusion is a chromatographic process which separates components from an impure feedstock on the basis of molecular size and charge. A pilot plant ion exclusion separator was constructed to determine the technical and economic feasibility of recovering sugar from refinery jet 4 (the feedstock identified as most promising in terms of ease of treatment). Extensive tests on jet 4 from the Mal...

We analyze a situation where individuals and coalitions can obtain effective property rights over a resource by means of an exclusion contest. Coalitions face a trade-off when they decide to incorporate new members: Big groups control the resource more likely but individual property rights are more diluted. Under cooperative explotation of the resource the grand coalition is the efficient parti...

One form of the inclusion-exclusion principle asserts that if A and B are functions of finite sets then the formulas A(S) = ∑ T⊆S B(T ) and B(S) = ∑ T⊆S(−1) |S|−|T A(T ) are equivalent. If we replace B(S) by (−1)B(S) then these formulas take on the symmetric form A(S) = ∑ T⊆S (−1) B(T ) B(S) = ∑ T⊆S (−1) A(T ). which we call symmetric inclusion-exclusion. We study instances of symmetric inclusi...

Trajectory data from observations of a random-walk process are often used to characterize macroscopic transport coefficients and to make inferences about motility mechanisms. Continuum equations describing the average moments of the position of an agent in an exclusion process are derived and validated with simulation data. Unlike standard noninteracting random walks, the moment equations for t...

We introduce a class of facilitated asymmetric exclusion processes in which particles are pushed by neighbors from behind. For the simplest version in which a particle can hop to its vacant right neighbor only if its left neighbor is occupied, we determine the steady-state current and the distribution of cluster sizes on a ring. We show that an initial density downstep develops into a rarefacti...

One form of the inclusion-exclusion principle asserts that if A and B are functions of finite sets then the formulas A(S) = ∑ T⊆S B(T ) and B(S) = ∑ T⊆S(−1) |A(T ) are equivalent. If we replace B(S) by (−1)|S|B(S) then these formulas take on the symmetric form A(S) = ∑