Mineral exploration with ERTS imagery

Ten potential target areas for metallic mineral exploration were selected on the basis of a photo-lineament interpretation of the ERTS image 1172-17141 in central Colorado. An evaluation of bias indicated that prior geologic knowledge of the region had little, if any, effect on target selection. In addition, a contoured plot of the frequency of photo-lineament intersections was made to determine what relationships exist between the photo-lineaments and mineral districts. Comparison of this plot with a plot of the mineral districts indicates that areas with a high frequency of intersections commonly coincide with known mineral districts. The results of this experiment suggest that photo-lineaments are fractures or fracture-controlled features, and their distribution may be a guide to metallic mineral deposits in Colorado, and probably other areas as well

Emotional Intelligence and its Effect on Performance Outcomes in a Leadership Development School

Emotional Intelligence (EI) and its impact on performance is of paramount importance to both the corporate world and military in the realm of leadership development. The purpose of this study was to understand how specific EI skills and behaviors are exhibited by high performing graduates of an in-residence Professional Military Education school, which primarily focuses on leadership development and effectiveness. The sample consisted of 621 military officers taking part in an in-residence professional military education course. EI was measured using the Emotional Skills Assessment self-report instrument. Findings suggested that certain dimensions of EI (commitment ethic, empathy, leadership, and aggression) can predict performance outcomes, but that they only account for 8.6% of the total variance of the dependent variable (performance outcomes)

Emerging criteria for the low-coherence cannot classify category

As suggested by Main et al., to respond to the need for an adaptation of the existing Adult Attachment Interview (AAI) coding system, especially regarding the application to nonnormative samples, this study presents additional criteria that characterize the low-coherence cannot classify (CC) category. Three AAIs were selected from a sample of parents of maltreated children. All transcripts indicated a very low coherence, with no evidence of contradictory insecure discourse strategies. Moreover, global category descriptors were identified, together with specific indices of discourse characteristics and features that highlight the breakdown in reasoning and discourse experienced by the speakers. The aim of the study is to illustrate new criteria to identify and rate a low-coherence CC profile toward the operationalization of this pervasively unintegrated state of mind. Through the definition of additional criteria for low-coherence CC category, our study helps the AAI and its coding system be more flexible and effective when dealing with clinical samples

Curing Kinetics Analysis of Dgeba-Mda System

Thermoset polymers and thermoset based composites are normally polymerized and performed in a step process. This work studies the kinetics behavior of a commercial epoxy system used as matrices of medium and high performance composite materials. The characterization study was performed by differential scanning calorimetry (DSC) and spectroscopic analysis

Shannon entropies of atomic structure factors, off-diagonal order and electron correlation

Shannon entropies of one- and two-electron atomic structure factors in the position and momentum representations are used to examine the behavior of the off-diagonal elements of density matrices with respect to the uncertainty principle and to analyze the effects of electron correlation on off-diagonal order. We show that electron correlation induces off-diagonal order in position space which is characterized by larger entropic values. Electron correlation in momentum space is characterized by smaller entropic values as information is forced into regions closer to the diagonal. Related off-diagonal correlation functions are also discussed

Furfuryl Alcohol-Based Resin as Matrix for High Performance Composites:

The polymerisation of a furfuryl alcohol-based resin, used as matrix for glass-fiber-reinforced composite materials, was studied by differential scanning calorimetry (DSC), and an empirical kinetic model of the complex reactive process was developed. The kinetic investigation led to the determination of kinetic constants, activation energies, and reaction orders for the adopted kinetic model

Preparation and Characterization of Nanocomposite Films

The incorporation of nanosized inorganic particles into a polymeric matrix represents the most important problem in the nanocomposite fabrication. Success in manufacturing materials for optical devices can be achived only if the particle aggregation is avoided. This paper describes the preparation of a polymeric nanocomposite containing a well-dispersed red pigment synthesized using nanosized titania particles

Prediction of the slope discontinuity in stress-strain behaviour of polymeric composites with spherical inclusions

The estimation of the point of discontinuity in the slope of stress-strain curves (commonly referred to as "knee") generally observed with composite polymeric materials could be an important problem for the specific application of the composite items. In this work, we have used the results from classical elasticity theory to calculate the residual thermal stresses and proposed simplifying assumptions to calculate a "lower bound" on the applied stress value at which the "knee" can occur. The theoretical predictions have been then compared with the experimental data on various polymeric composites containing glass beads and the agreement is found to be very sound. The proposed equation can be reliably used in engineering design

A Method for Simple and Precise Measurements of Kinetics of Reactions between SiC and Molten Al

Reinforced aluminum is generally fabricated by liquid metal infiltration. The reinforcement degradation produced by molten matrix is the major problem to be considered. The relationship between conversion and thermal exposure time is an important information. In the present paper a method for measuring the conversion by weight determinations is proposed

Wettability of Copper Coated Carbon Fibers

The wetting kinetics of a solid surface by a molten metal decrease with increase of its roughness. The topography of the growing copper coating, produced on carbon fiber surface by electroplating from a sulphat bath, has been studied by scanning electron microscopy. The smoothes surface is produced after 200÷300 milliampere-hour of plating