The PHENIX experiment at RHIC measured inclusive production of light neutral mesons (K0S, η, ω, ϕ) in p + p, d + Au and Au + Au collisions at and 200 GeV. Different hadronic and di-electron decay channels of the mesons produce consistent results. This paper presents meson yields, particle ratios and nuclear modification factors measured in d + Au and Au + Au collisions at different centralities.

The PHENIX [1] experiment at RHIC measured the ω-meson production in the range of p ⊥ from 2.5 GeV /c to 9.5 GeV /c in p+p and d+Au collision systems at √ s NN = 200 GeV . We present the consistent results of two independent measurements in decay channels ω → π 0 π + π − and ω → π 0 γ. The ω/π 0 ratio was found to be 0.90 ± 0.06. The Nuclear Modification Factor R dA is 1.3 ± 0.2 both in the Minimum Biased and (0%-20%) central event samples. The mass of the ω-meson was measured to be consistent with the PDG[2] value within the errors of the measurement. We also measured the K 0 S -meson production in K 0 S → π 0 π 0 in the same collision systems.

The effect of the high-melting paraffin content in petroleum paving asphalts on their adhesive properties was analyzed. The paraffin content was varied by adding petrolatum -high-melting paraffin concentrate, the closest in structure to asphalt paraffins (confirmed by IR spectroscopy) -to the asphalts. The adhesive properties of the asphalt binder were evaluated with the contact angle of wetting on glass and p o l i s h e d m a r b l e p l a t e s a n d a c c o rd i n g t o G O S T 11 5 0 8 -7 4 . I t w a s s h o w n t h a t a c o n t e n t under 5% virtually does not worsen its adhesive properties.

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