[1] The geologic origin of the Medusae Fossae Formation (MFF) has remained a mystery despite three decades of research. To better constrain its formation, an in-depth analysis of observations made in the literature was combined with a new survey of over 700 Mars Orbiter Camera narrow-angle images of the MFF to identify morphologic characteristics and material properties that define this formati...

In the relatively pristine ecosystem in Kejimkujik Park, Nova Scotia, methylmercury (MeHg) concentrations in loons, Gavia immer, are among the highest recorded anywhere in the world. This study investigated the influence of bedrock lithology on MeHg concentrations in wetlands. Twenty-five different wetland field sites were sampled over four different bedrock lithologies; Kejimkujik monzogranite...

background: repeated implantation failure (rif) is defined as pregnancy failure after two to six times with at least ten high grade embryo transfer to uterus. a variety of causes have been anticipated for rif, including anatomical, autoimmune, genetics, endocrine and thrombotic anomalies. factors responsible for rif have important implication regarding treatment however in many couples a perfec...

Landslides are natural disasters that have resulted in the loss of economies and lives over years. The landslides caused by 2005 Muzaffarabad earthquake heavily impacted area, slopes region become unstable. This research was carried out to find which areas, as district, sensitive define relationship between geo-environmental factors using three tree-based classifiers, namely, Extreme Gradient B...

In this paper selected aspects of human factors are discussed that should be taken into account during the design of safety-related functions for a complex hazardous installation and its protections. The layer of protection analysis (LOPA) methodology is used for simplified risk analysis based on defined accident scenarios. To control the risk the safety instrumented functions (SIFs) are identi...

A new approach to choosing the optimum design of reciprocating compressors is discussed. Economic criteria ore included together with optimisation procedures which account far thermodynamic criteria of performance, These procedures are applied to a mathematical model of a compressor to produce a "best" design. Such factors as initial cost, interest rates, depreciation, inflation, running costs,...