Microorganisms colonizing straws buried in Chile desert soil samples

Microorganisms trapping by colonization of sterile organic plant parts buried in Chile desert soil sample

On the topological Hochschild homology of bu. I.

The purpose of this paper and its sequel is to determine the homotopy groups of the spectrum THH(l). Here p is an odd prime, l is the Adams summand of p-local connective K-theory (see for example [25]) and THH is the topological Hochschild homolog

The approximation theorem and the K-theory of generalized free products

this paper to show how to derive the main theorems of [8] as applications of results and methods of [9]. Using different methods, Pierre Vogel [7] has also reconsidered results of [8]. We first develop language so that essentially the same fibration used in [8] may be derived from a general fibration theorem (Theorem 1.6.4 of [9, page 354]) developed as part of the overall approach to abstract algebraic K-theory described in [9]. This is Proposition 2.1 below. Our main contribution is the description of how the approximation theorem (Theorem 1.6.7 of [9, page 354]) may then be used to interpret terms in the fibration. These results are Theorems 2 and 3 stated at the end of the section. We are able to replace the technical manouvering required in the original proofs with arguments that follow a standard pattern and are more conceptual. The paper also provides an introduction to a few of the ideas we will use in [5], where we generalize the situation to the case of simplicial rings. One of the goals of [5] is to set up a framework which will also allow us to handle decomposition problems in th

Studies on the multistage nature of radiation carcinogenesis

With low dose levels of ionizing or ultraviolet radiation, the number of initiation events exceeds the number of tumors that grow to a detectable size. Ionizing radiation, which is a complete carcinogen, appears to be a more effective initiator than an enhancer or promoter. However, the initiation and promotion aspects of ionizing radiation have been studied in very few organ systems. In the case of UVR, with or without photosensitizers such as psoralens, the requirement of a relatively large number of exposures for carcinogenesis suggests that the expression of the initiated cells as frank tumors requires a number of events spread out over the time of the development of the tumor. Both ionizing and ultraviolet radiation are, perhaps, underutilized as tools for probing the mechanism of both initiation and promotion

Stable K-theory and topological Hochschild homology of A infinity rings

this paper, and modifications necessary to treat the case of A1 -rings will be indicated in [14]. 3 Approximations to stable K-theor