|
|
Creator | Title | Description | Subject | Date |
1 |
|
Morse, Michael David | The 3d?Ni(?F)3d10Cu???*? manifold of excited electronic states of NiCu | Diatomic NiCu has been supersonically cooled in a molecular beam and investigated by resonant two-photon ionization spectroscopy. A total of nine band systems connecting the ground 3d?Ni3??Cu??, X 2?5/2 state to the 3d?Ni(3F)3d??Cu??*?? manifold of states have been found, and bands of eight of these... | | 1992 |
2 |
|
Morse, Michael David | The 846 nm A? ???u ? ??? band system of jet-cooled V? | The 846 nm band system of jet-cooled 5?V2 has been recorded using resonant two-photon ionization spectroscopy, and is assigned as the A ? 3?u- +X ??g- band system. Both the ?'= 1u? ?" = 1g and ?'= Ou+ ??? = 0g+ subbands of the O-O band have been rotationally resolved and analyzed. Although the trans... | | 1992 |
3 |
|
Morse, Michael David | The ?IIou ?X ???g band system of jet-cooled Ti? | A band of jet-cooled ??Ti? has been located in the near infrared by resonant two-photon ionization spectroscopy. Rotational analysis has shown the band to be an ?? =O* ???=1 transition, which is consistent with the 3??g, ground state proposed by Bauschlicher ef al. [J. Chem. Phys. 95, 1057 ( 1991)]... | | 1992 |
4 |
|
Olivera, Baldomero M. | Conus peptides: phylogenetic range of biological activity | The major function of the venoms of the predatory marine snails belonging to the genus Conus is to paralyze prey. Thus, the venom of each Conus species acts on receptors and ion channels of the prey; previous studies suggested much less activity on homologous receptor targets in more distant taxa.... | Conus peptides; Conopeptides; Conotoxins | 1992 |
5 |
|
Capecchi, Mario R. | Creating mice with targeted disruptions in protooncogenes and homeobox genes, NIH Director's Lecture given May 21, 1992 | This is an audio transcript of a 1 hour, 2 minutes and 12 seconds lecture given at the National Institutes of Health by Mario Capecchi on 1992/05/21. Beginning with a short summary of the mechanics of gene transfer and the ability to create germline chimera with mutations that become hereditary wit... | Transgenic mice; Gene targeting; Genetic engineering; Molecular genetics; Mutagenesis; Homeobox genes; Histology - Pathological; Gene expression; Gene regulation; Genotype; Phenotype | 1992 |
6 |
|
Davidson, Diane W. | Experimental manipulation of food bodies in Cecropia | Neotropical Cecropia trees range from Mexico to Argentina and are typical of disturbed habitats. Cecropia plants provide food and housing for the ants in return for known or presumed protection from herbivores and vine cover. Glycogen-rich Mullerian bodies (MB's) are the predominant food source for ... | Mullerian bodies; Trichilia; Cecropia tessmannii; Cecropia pungara | 1992 |
7 |
|
Olivera, Baldomero M.; Hillyard, David R. | Heterodimeric structure of the spider toxin ω-Agatoxin IA revealed by precursor analysis and mass spectrometry | We report the first molecular characterization of a precursor sequence for a small, Ca2+ channel blocking, peptide spider toxin, ω-agatoxin IA. By integrating information generated from a molecular genetic approach using agatoxin cDNAs with data provided from mass spectrometry of the mature tox... | Spider toxin w-Aga-IA; Heterodimeric structure | 1992 |
8 |
|
Adler, Frederick R. | Information collection and spread by networks of patrolling ants | To study how a social group, such as an ant colony, monitors events occurring throughout its territory, we present a model of a network of patrolling ants engaged in information collection and dissemination. In this network, individuals follow independent paths through a region and can exchange sign... | Patrolling network; ant colony; information-gathering | 1992 |
9 |
|
Beckerle, Mary C. | Interaction between zyxin and α-actinin | Zyxin is an 82-kD protein first identified as a component of adhesion plaques and the termini of stress fibers near where they associate with the cytoplasmic face of the adhesive membrane. We report here that zyxin interacts with the actin cross-linking protein α-actinin. | Zyxin; Actinin; Actin | 1992 |
10 |
|
Morse, Michael David | Laser vaporization generation of Y ??B+, Y ??B+, and YAI+ for electron spin resonance studies in neon matrices at 4 K: comparison with theoretical calculations | The first spectroscopic investigation of 89Y 10B+, 89Y 11B+, and 89Y 27Al+ is reported, revealing that both of these diatomic cation radicals have X 4?- electronic ground states. The ions were generated by three high energy techniques in combination with neon matrix isolation at 4 K and studied by e... | | 1992 |
11 |
|
Morse, Michael David | Ligand-field theory applied to diatomic transition metals. Results for the d?Ad?B?? states of Ni?, the d?Nid??cu?? states of NiCu, and the d?Ni(?F)d??cu???*? excited states of NiCu | A ligand-field theory has been developed for transition-metal diatomics having electronic configurations of d?Ad??B??, d?Ad?B?? and d?A(?F)d??B???*?. The theory treats each atom as a point charge and includes spin-orbit interactions. No contributions due to d-orbital chemical bonding are included. ... | | 1992 |
12 |
|
Gondolo, Paolo | Neutralinos as dark matter in the minimal supergravity model | A new approach to the phenomenological study of the minimal supergravity model is presented in which the model is effectively parametrized in terms of five low energy observables. Radiative corrections due to large Yukawa couplings and particle-sparticle mass splitting are included into the analysis... | Neutralinos | 1992 |
13 |
|
Miller, Joel Steven; Epstein, Arthur J. | Organic and molecular ferromagnets | Unlike common ferromagnets such as iron, nickel, cobalt or even cobalt-samarium and Nb-Fe-B, it is extremely rare for a discrete molecule, especially an organic or polymeric material, to have cooperative magnetic interactions. Since the mid-1980s a few such materials have been prepared which demon... | Magnetic; Magnetization; Temperature | 1992 |
14 |
|
Ehleringer, James R. | Plant adaptation in the Great Basin and Colorado Plateau | Adaptive features of plants of the Great Basin are reviewed. The combination of cold winters and an arid to semiarid precipitation regime results in the distinguishing features of the vegetation in the Great Basin and Colorado Plateau. The primary effects of these climatic features arise from how t... | Plant adaptation; Great Basin; Colorado Plateau; Cold deserts | 1992 |
15 |
|
Morse, Michael David | Predissociation lifetimes of vibrational levels of the excited ? B? (Ka=O) electronic states of Cd ? H? and Cd ? D? complexes | The experimental rates of predissociation of vibrational levels of the ?B? (K'a-O) excited states of the Cd ? HZ and Cd ? D2 complexes are shown to be consistent with both semiclassical and quantum-mechanical pseudodiatomic theoretical treatments of the process. The ?B? pseudodiatomic potential was ... | | 1992 |
16 |
|
Beckerle, Mary C. | Purification and characterization of zyxin, an 82,000-Dalton component of adherens junctions | We describe here the purification and characterization of a recently identified adherens junction protein that has an apparent molecular mass of 82 kDa on sodium dodecyl sulfate-polyacrylamide gels (Beckerle, M. C. (1986) J. Cell Biol. 103, 1679-1687). The 82-kDa protein was isolated from avian smoo... | Zyxin | 1992 |
17 |
|
Ehleringer, James R.; Negus, Norman C. | Red Butte Canyon Research Natural Area: history, flora, geology, climate, and ecology | Red Butte Canyon is a protected, near pristine canyon entering Salt Lake Valley, Utah. It contains a well-developed riparian zone and a perennial stream; hillside vegetation ranges from grasslands on the lower limits to Douglas-fir and aspen stands at the upper elevations. In this paper we describe ... | Intermountain West; Grassland; Oak-maple; Plant adaptation; Red Butte Canyon Research Natural Area; Human impact | 1992 |
18 |
|
Morse, Michael David | Spectroscopy of AlAr and AlKr from 31 000 cm-1 to the ionization limit | Spectra of jet-cooled AlAr and AlKr have been collected over the range from 31 000 cm -? to the ionization limit, using the technique of resonant two-photon ionization spectroscopy with mass spectrometric detection. Adiabatic ionization potentials have been accurately measured for both molecules, an... | | 1992 |
19 |
|
Morse, Michael David | Spectrosopic studies of jet-cooled NiAu and PtCu | Spectroscopic investigations of NiAu and PtCu have revealed that both molecules possess 2?5/2 ground electronic states, and are in this respect analogous to the isovalent molecule NiCu. The ground-state bond lengths (r?) have been measured as 2.351?0.001 ? and 2.335?0.001 ? for NiAu and PtCu, respe... | | 1992 |
20 |
|
Miller, Joel Steven; Epstein, Arthur J. | Spin dilution in a ferromagnetic chain | We have systematically introduced spinless defects in the quasi-one-dimensional ferromagnetic system decamethylferrocenium tetracyanoethanide, [FeCp(2*)] [TCNE]. The three-dimensional ordering temperature Tc decreases rapidly with the concentration of spinless sites. The rate of decrease of Tc with... | Magnetic; Magnetization; Spinless | 1992 |
21 |
|
Ailion, David Charles | Thermal fluctuations and NMR spectra of incommensurate systems | In the presence of thermal fluctuations the incommensurate NMR line shape is a convolution of a static inhomogeneous with a dynamic homogeneous line shape which can be determined separately by 2D NMR. The form of the dynamic line shape and its variation over the inhomogeneous NMR spectrum permit a ... | Thermal fluctuations; NMR; Incommensurate systems; Line shape | 1992 |
22 |
|
Beckerle, Mary C. | Zyxin and cCRP: Two interactive LIM domain proteins associated with the cytoskeleton | Interaction with extracellular matrix can trigger a variety of responses by cells including changes in specific gene expression and cell differentiation. The mechanism by which cell surface events are coupled to the transcriptional machinery is not understood, however, proteins localized at sites o... | Zyxin; Cysteine-rich proteins; cCRP; LIM domain | 1992 |