The Ras(17N) dominant negative antagonizes endogenous Ras function by forming stable, inactive complexes with Ras guanine nucleotide exchange factors (GEFs; e.g., SOS1). We have used the growth-inhibitory phenotype of Ras(17N) to characterize two aspects of Ras interaction with GEFs. First, we used a nonprenylated version of Ras(17N), designated Ras(17N/186S), which no longer associates with th...

بررسی آزمایشگاهی غلظت مهارکنندگی عصاره‌های متانولی و اتانولی گیاه کاکوتی قان‌تپر بر رشد باکتری استرپتوکوکوس موتانس قارچ کاندیدا آلبیکنس

Identification ofNeisseria gonorrhoeaeby the Bruker matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) system may be affected by "B consistency categorization." A supplementary database of 17N. gonorrhoeaemain spectra was constructed. Twelve of 64N. gonorrhoeaeidentifications were categorized with B consistency, which disappeared using the supplementary ...

The low-lying negative-parity states of 17N [1] are reasonably well described as two sd-shell neutrons coupled to the 15N ground state (gs). Two different sets of wave functions within this space were used to analyze results from the 15N (t, p) reaction [2]. Both sets worked well, and comparison between experiment and calculations allowed several suggestions of J and a dominant configuration. O...

We study the area requirement for upward straight-line grid drawing of complete and Fibonacci tree. We prove that a complete tree with n nodes can be drawn in n + O(log n p n) area, and a Fibonacci tree with n nodes can be drawn in 1:17n + O(log n p n) area.

In this paper we show how to construct in 2 rounds a line-rigid point placement graph of size 4n/3+O(1) from small graphs called 6:6 jewels, an extension of the 4:4 jewel of [3]. This improves a result reported in [2] that uses 5-cycles. More significantly, we improve their lower bound on 2-round algorithms from 17n/16 to 14n/13.