Petrology and Mineralogy of Quaternary Basalts, Gem Valley and Adjacent Bear River Range, Southeastern Idaho

Quaternary basalts of Gem Valley, Idaho, are present as valley fill (Group 1) and as well defined flows in the Bear River Range (Group 2) east of Gem Valley. Minerals present in both groups of basalts include olivine (Fo73 -Fo39), augite (Wo41 En39 Fs20), plagioclase (An75 -An40), and Fe-Ti oxides. Coexisting pairs of magnetite and ilmenite, and olivine and clinopyroxene in several samples indicate temperatures of crystallization from 958°c to 1167°c. The Group 2 basalts exhibit a cumulate texture with abundant large (2 cm) phenocrysts of plagioclase. Chemically, the Gem Valley basalts are similar to the basalts of the Snake River Plain with respect to SiO2, total Fe, P2O5 and Na2O but differ in the amounts of Al2O3 and MgO present. The Al2O3 is generally higher and the MgO is generally lower in the Gem Valley basalts. Comparing Group 1 with Group 2 basalts, the Group 2 basalts generally have more alumina and alkalis than the Group 1 basalts. Chemically both groups of basalt exhibit characteristics of the tholeiitic basalt suite, because they are hypersthene normative. Mineralogically, both groups of basalt contain but one pyroxene, augite, which is characteristic of the alkali-olivine basalt suite. This apparent contrast in classifications may be resolved by referring to these basalts as transitional between the alkali-olivine and tholeiitic basalt .suites, with the restriction that no genetic relationship to either suite is implied. Within the limits of this study, it is proposed that the Group 1 basalts may have formed by the partial melting of mantle material with a pyrolite composition. Furthermore, the Group 2 basalts appear to have originated as a result of the accumulation of plagioclase in a fractionating magma of Group 1 composition

LIGAND-INDUCED MOVEMENT OF LYMPHOCYTE MEMBRANE MACROMOLECULES : I. ANALYSIS BY IMMUNOFLUORESCENCE AND ULTRASTRUCTURAL RADIOAUTOGRAPHY

The fate of different complexes on the membrane of thymocytes and spleen lymphocytes was studied with the use of both immunofluorescence and ultrastructural radioautography. The complexes of anti-immunoglobulin (Ig) with the surface Ig of B lymphocytes were present all around the membrane at 4°C; an increase in temperature produced a rapid aggregation of the complex into a cap which was readily interiorized in vesicles. Ultrastructural details of this process were given. The movement of the complexes depended upon the amount of anti-Ig and the temperature. The complexes of anti-lymphocyte antibody with surface antigen(s) did not result in formation of a single large aggregate (or cap) unless an anti-antibody was brought into the reaction. The caps formed by this trilayered complex were not interiorized. Concanavalin A (Con A) bound to cell surface carbohydrate moieties and the complexes of Con A readily formed a cap and were interiorized. Finally, antibodies to H-2 determinants did not form in most instances a single cap aggregate even when anti-antibodies were used. With time the H-2 complexes tended to form several large aggregates with some endocytosis

AN ULTRASTRUCTURAL STUDY OF LYMPHOCYTES WITH SURFACE-BOUND IMMUNOGLOBULIN

This report is on a radioautographic study of lymphocytes exposed to 125I-labeled anti-Ig in an attempt to identify surface-bound Ig molecules. The results as studied by ultrastructural radioautography confirmed the presence of surface-bound Ig on a certain population of lymphocytes. The specificity of the anti-Ig was determined by using appropriate controls that included the use of an absorbed anti-Ig and anti-hemocyanin antibody. The labeling pattern resulting from the interaction of labeled anti-Ig and Ig was found to be specifically associated with the cell surface and random in its distribution. Morphological differences were not apparent between labeled and nonlabeled lymphocytes in the spleen and lymph nodes. In the thymus, most lymphocytes did not exhibit detectable Ig. The few thymic lymphocytes that were labeled had unique morphological characteristics that included fewer ribosomes, many of which were monoribosomes. Relative to the amount in their cytoplasmic organelles, plasma cells had surface Ig but to a lesser degree than lymphocytes. Finally, macrophages were nonspecifically labeled and contained antibody on their membranes as well as intracellularly

An Investigation of Ionic Wind Propulsion

A corona discharge device generates an ionic wind and thrust, when a high voltage corona discharge is struck between sharply pointed electrodes and larger radius ground electrodes. The objective of this study was to examine whether this thrust could be scaled to values of interest for aircraft propulsion. An initial experiment showed that the thrust observed did equal the thrust of the ionic wind. Different types of high voltage electrodes were tried, including wires, knife-edges, and arrays of pins. A pin array was found to be optimum. Parametric experiments, and theory, showed that the thrust per unit power could be raised from early values of 5 N/kW to values approaching 50 N/kW, but only by lowering the thrust produced, and raising the voltage applied. In addition to using DC voltage, pulsed excitation, with and without a DC bias, was examined. The results were inconclusive as to whether this was advantageous. It was concluded that the use of a corona discharge for aircraft propulsion did not seem very practical

Investor Attitudes, Investment Screen Use, and Socially Responsible Investment Behavior

There is an increasing demand for socially responsible investment (SRI), and SRI screens are an important source of information for investors. Yet, little is known about the relationship between investors’ attitudes, use of SRI screens, and actual SRI behavior. To examine this relationship, we gathered data on investors’ environmental attitudes, use of SRI screens, and SRI behavior. We find that four out of five components of the New Ecological Paradigm (NEP) scale, a measure of basic environmental attitudes, are associated with specific attitudes towards environmentally responsible investment. These specific attitudes in turn are positively associated with SRI screen use, and SRI screen use is positively associated with the percentage of investors’ portfolio held in SRIs. There is also a significant direct relationship between specific environmentally responsible investment attitudes and SRI holdings. Our results suggest that there are complex, multi-dimensional relationships between investor attitudes, SRI screen use, and investment behavior

\u3cem\u3eCatena\u3c/em\u3e-Poly[[Bis(α-Thenoyltrifluoroacetonato)Copper(II)]-μ-1,4-Di-4-Pyridyl-2,3-Diazabuta-1,3-Diene]

In the one-dimensional title polymer, [Cu(C8H4F3O2S)2(C12H10N4)]n or [Cu(L)2(tta)2] [tta is -thenoyltrifluoroacetonato and L is 1,4-bis(4-pyridyl)-2,3-diaza-1,3-butadiene], Cu2+ lies on a center of inversion. It is axially coordinated by two pyridyl N atoms from two different L ligands and equatorially coordinated by four O atoms from two chelating tta ligands. The ligand L propagates the one-dimensional chain structure by serving as a bridging ligand between two Cu octahedra via Cu-N coordinate bonds

Atmospheric monitoring for the Pembina Cardium CO2 Monitoring Project using open path laser technology

AbstractThis study aimed to assess remote sensing methods using open path laser technology as a tool for atmospheric monitoring of CO2 storage sites. CH4 and CO2 open path detection systems were tested at the Penn West Pembina Cardium CO2 enhanced oil recovery monitoring pilot. The tested CH4 detection system was found to be very sensitive and small increases in the gas concentration due to controlled releases were easily distinguishable. The detection capability of the CO2 detection system was impacted by the larger natural background concentration of CO2. Where possible, CH4 should be used as an indicator due to the better detection capabilities and smaller background concentration variations compared to CO2

Quick Start Guide to Soil Methods for Ecologists

Increasingly biologists and ecologists are becoming aware of the vital importance of soil to processes observed above ground and are incorporating soil analyses into their research. Because of the dynamic and heterogeneous nature of soil, proper incorporation of soil analysis into ecological studies requires knowledge and planning. Unfortunately, many ecologists may not be current (or trained at all) in soil science.We provide this review, based on our cumulative \u3e60 years of work in soil science,to help familiarize researchers with essential information to appropriately incorporate soil analyses into ecological studies. Specifically, we provide a brief introduction into soils and then discuss issues related to soil sterilization, choosing a soil for a greenhouse project, sampling soils, and soil analyses