This paper discusses the effects of rust and paint on workability retightening anchor bolts turnbuckles through element experiment. The findings obtained from experiments are summarized as follows: (1) Required torque to adjust nuts all thread painted original position by was higher than that no painted. (2) satisfy requirement for axial force rusted with antirust paint.

Introduction: Mawrth Vallis, Mars, exhibits unique stratigraphy characterized by distinct phyllosili-cate units across an expansive region [1,2]. A potential analog for this site is the Painted Desert in Arizona, where striking profiles of clay and iron oxide units color the landscape [3]. Both sites contain multiple phyllosilicate units in similar stratigraphy across wide regions. We have acqu...

Given a set of points in the plane each colored either red or blue, we find non-self-intersecting geometric spanning cycles of the red points and of the blue points such that each edge of the red spanning cycle is crossed at most three times by the blue spanning cycle and vice-versa.

A u × v matrix A is image partition regular provided that, whenever N is finitely colored, there is some ~x ∈ N with all entries of A~x monochrome. Image partition regular matrices are a natural way of representing some of the classic theorems of Ramsey Theory, including theorems of Hilbert, Schur, and van der Waerden. ∗This author acknowledges support received from the National Science Foundat...