Pyroxenes are among the most common minerals in the solar system and are ideally suited for remote geochemical analysis because of the sensitivity of their distinctive spectra to mineral composition. Fe is responsible for the dominant pyroxene absorptions in the visible and near-infrared, but substitutions of other cations such as Ca change the crystal structure and site geometries and thus the...

Cells from leukemia L1210 and a subline resistant to methylglyoxal-bis(guanylhydrazone) elicited a demonstrable humoral antibody response in DBA/2Ha-DD mice. Using paired-label 7-globulin mixtures containing '3 ' I-labeled normal and '2 5I-labeled immune 7-globulin, we showed that the specific uptake of antiresistant L1210 cell 7-globulin by resistant L1210 cells was consistently higher than th...

Absorption features on Phobos and Deimos in the visible/near infrared wavelength region (0.4–3.9 lm) are mapped using observations from the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM). Fe electronic absorptions diagnostic of olivine and pyroxene are not detected. A broad absorption centered around 0.65 lm within the red spectral units of both moons is detected, and this feature...

Absorptions of sera from groups of persons, both normal and after vaccination, resulted in complete removal of antibody to all strains of influenza virus within a type when a strain of antigenic configuration similar to that presumed to be the strain of first experience was employed. Absorption of these sera with strains encountered after the primary antigenic stimulus, removed antibody to stra...

The light absorbed by water in soil and plants is readily determined using hyperspectral full-range imagery and field spectrometers. The full absorption of light can be accounted for by fitting the shape of water absorptions at the same time as other diagnostic bands using multiple Gaussian functions. This research is particularly important in soils due to the loss of mineral band depth with th...

Blood, Vol. 50, No. 1 (July), 1977 115 The specificity of an antiserum (titer 1:500) raised in a monkey against K-562 undifferentiated cells with the Philadelphia chromosome (Ph’) was determined. Antibody-dependent, complement-mediated cytotoxicity was demonstrated for both bone marrow cells and peripheral leukocytes from patients with myelogenous and lymphatic leukemias, but not for mature nor...

Introduction: The Extraterrestrial Spectrum (ETS) is the Solar Spectral Irradiance (SSI) on a surface at Air Mass Zero (AM0). It is the incident solar spectrum prior to distortion by terrestrial or atmospheric conditions. Its precise determination is of primary importance for converting radiance data from space-borne remote sensing instruments to accurate reflectance values necessary for geolog...

The complexes [Ru(CN)4(HAT)]2-, [{Ru(CN)4}2(mu2-HAT)]4- and [{Ru(CN)4}3(mu3-HAT)]6- (HAT = hexaaza-triphenylene) contain four, eight and twelve externally-directed cyanide ligands, respectively; they show strongly solvatochromic and intense MLCT absorptions, and [3]6- forms a high-dimensionality cyanide-bridged coordination network with Nd(III), in which Ru --> Nd energy transfer results in sen...

The triplet to singlet exciton formation ratio in a MEH-PPV light-emitting diode is measured by comparing the triplet-induced absorptions with optical and electric excitations at the same singlet exciton density. The ratio is a strong universal decreasing function of the averaged electric field. Using 4 ns for singlet to triplet intersystem crossing time, the ratio is significantly larger than ...

Compounds incorporating the tetrathiafulvalene (TTF) donor unit and one or two cyanoethynylethene (CEE) acceptor units were prepared by Knoevenagel condensations of highly unstable, TTF-linked propargylic aldehyde or ketone derivatives. The resulting TTF-CEEs are very strong chromophores with low-energy end-absorptions beyond 900 nm. The molecules experience reversible oxidations of the TTF uni...