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Creator | Title | Description | Subject | Date |
| 176 |
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Adler, Frederick R. | Stochasticity, complex spatial structure, and the feasibility of the shifting balance theory | Sewall Wright's shifting balance theory of evolution posits a mechanism by which a structured population may escape local fitness optima and find a global optimum. We examine a one-locus, two-allele model of underdominance in populations with differing spatial arrangements of demes, both analyticall... | Fitness landscape; Sewall Wright; Underdominance | 2006 |
| 177 |
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Plutynski, Anya | Strategies of model building in population genetics | In 1966, Richard Levins argued that there are different strategies in model building in population biology. In this paper, I reply to Orzack and Sober's (1993) critiques of Levins and argue that his view on modeling strategies apply also in the context of evolutionary genetics. In particular, I arg... | | 2006 |
| 178 |
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Mathews, V. John | Subband particle filtering for speech enhancement | ABSTRACT Particle filters have recently been applied to speech enhancement when the input speech signal is modeled as a time-varying autoregressive process with stochastically evolving parameters. This type of modeling results in a nonlinear and conditionally Gaussian statespace system that is not ... | | 2006 |
| 179 |
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Couldwell, William T. | Submandibular-infratemporal interpositional carotid artery bypass for cranial base tumors and giant aneurysms | Cerebral revascularization is an important strategy in the surgical management of some complex cranial base tumors and unclippable aneurysms. A highflow bypass may be necessary in planned carotid occlusion or sacrifice. The cervical-to-supraclinoid internal carotid artery bypass or cervical carotid-... | Internal carotid artery; Cranial base tumors; Giant aneurysms; Interpositional bypass; Surgical approach; Radial artery; Revascularization; Saphenous vein; Submandibular infratemporal bypass | 2006 |
| 180 |
 |
Beckerle, Mary C.; Hoffman, Laura M. | Supervillin modulation of focal adhesions involving TRIP6/ZRP-1 | Cell-substrate contacts, called focal adhesions (FAs), are dynamic in rapidly moving cells. We show that supervillin (SV)-a peripheral membrane protein that binds myosin II and F-actin in such cells-negatively regulates stress fibers, FAs, and cell-substrate adhesion. The major FA regulatory sequenc... | Supervillin; Focal adhesions; Zyxin; LIM domains; TRIP6 | 2006 |
| 181 |
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Couldwell, William T. | Surgical management of Rathke's cleft cysts | Rathke's cleft cysts (RCCs) are non-neoplastic cysts that arise from glandular rests of Rathke's cleft in the area of the intermediate lobe of the pituitary gland. Commonly found at autopsy on a microscopic scale, 80% of RCCs occur at the interface between the anterior and posterior lobes of th... | Rathke's cleft cyst; Symptomatic; Transnasal-transsphenoidal approach; Transsphenoidal surgery | 2006 |
| 182 |
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Couldwell, William T.; MacDonald, Joel D. | Surgical strategies for recurrent craniofacial meningiomas | Recurrent cranial base meningiomas are among the most difficult tumors to treat surgically. Although they are histologically benign, these tumors often invade through the cranial base into the infratemporal and pterygopalatine fossae. We reviewed our experience with these tumors to describe the nat... | Craniofacial meningiomas; Recurrence; Cranial base tumor; Neoplasm | 2006 |
| 183 |
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Mamalis, Nick; Kleinmann, Guy; Chew, Jesse; Apple, David J. | Suturing a tear of the anterior capsulorhexis | AIM: To describe a new technique of suturing a tear in the anterior capsulorhexis. METHODS: Continuous curvilinear capsulorhexis (CCC) with lens removal was done in five fresh cadaver eyes. The diameter of the CCC was measured with a calliper. Using the same calliper a tear of the CCC was created wh... | Continuous curvilinear capsulorhexis; intraocular lens implantation; tear | 2006 |
| 184 |
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Miller, Joel Steven | Synthesis of layered (2-D) V-based bimetallic oxalates from non-aqueous media that cannot be synthesized from aqueous media | The reaction of (NBu4)3[VIII(ox)3] (1, ox = oxalate) and M(II) (M= Fe, Co, Ni, Cu) ions in MeCN, leads to the isolation of V-based coordination polymers of [N(n-Bu)4][FeIIVIII(ox)3]? 0.30{[N(n-Bu)4](BF4)} (2), [N(n-Bu)4][CoIIVIII(ox)3]?0.75{[N(n-Bu)4](BF4)} (3), [N(n-Bu)4][NiIIVIII(ox)3]?0.20{[N(n... | Magnetic; Coupling; Diffraction | 2006 |
| 185 |
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Armentrout, Peter B. | Thermochemistry of the activation of N2 on iron cluster cations: guided ion beam studies of the reactions of Fen+ (n=1-19) with N2 | The kinetic energy dependences of the reactions of Fen + (n=1-19) with N2 are studied in a guided ion beam tandem mass spectrometer over the energy range of 0-15 eV. In addition to collision-induced dissociation forming Fem + ions, which dominate the product spectra, a variety of FemN2+ and FemN+ p... | Metal clusters; Iron ions; Dinitrogen; Endothermic reactions; Collision-induced dissociation; Bond energies | 2006 |
| 186 |
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Gerton, Jordan | Tip-enhanced fluorescence microscopy of high-density samples | High-density samples of fluorescent quantum dots (QDs) were imaged using an apertureless near-field optical microscopy technique. QD fluorescence was modulated by oscillating a silicon atomic force microscope tip above an illuminated sample and a lock-in amplifier was used to suppress background fr... | | 2006 |
| 187 |
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Silverman, Randall H. | Towards a national disaster response protocol | Since the Florence flood of November 4, 1966, the concept of an organized disaster response for cultural property has been a focus for conservators. In 1976, a decade after the Arno River had retreated from Florence's museums, libraries, and historic churches, a Library of Congress planning confere... | Emergency; Property; Preservation | 2006 |
| 188 |
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Horch, Kenneth W. | Towards a neuroprosthetic arm | Evidence indicates that user acceptance of modern artificial limbs by amputees would be significantly enhanced by a system that provides appropriate, graded, distally referred sensations of touch and joint movement, and that the functionality of limb prostheses would be improved by a more natural co... | Neuroprosthetic arm; Peripheral nerve; Neuroprosthetics; Amputee | 2006 |
| 189 |
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Schabel, Matthias C. | Transurethral ultrasound diffraction tomography | The potential for cost-effective tomographic imaging using ultrasound continues to be confronted with difficulties arising from the computational complexity of fully three dimensional object reconstruction in the diffraction regime. Development of fast and accurate forward and inverse models for ult... | | 2006 |
| 190 |
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Miller, Jan D. | Trithiocarbonates for PGM flotation | Small replacements of C12-trithiocarbonate (C12-TTC) for dithiocarbonate DTC)/dithiophosphate (DTP) in a reagent suite for the flotation of platinum group metals (PGM) have significantly improved the rejection of gangue. Coupled to this is an improvement in kinetics, grade and recovery of PGMs. In ... | | 2006 |
| 191 |
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Clayton, Dale H. | Two new species of Dennyus (Collodennyus) chewing lice (Phthiraptera: Amblycera: Menoponidae) from swiftlets (Apodiformes: Apodidae) | The new species Dennyus (Collodennyus) mimirogerorum from the Papuan swiftlet, Aerodramus papuensis (Rand), from Papua New Guinea and D. (C.) bartoni from the Philippine swiftlet, A. mearnsi (Oberholser), from the Philippines are described and illustrated. The genetic distinctiveness of these two sp... | Collodennyus; Chewing louse; Chewing lice; Swiftlets; Phthiraptera; Papuan swiftlet; Aerodramus papuensis | 2006 |
| 192 |
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Christensen, Douglas A. | Ultrasound-enhanced localized chemotherapy of drug-sensitive and multidrug resistant tumors | A new modality of targeted tumor chemotherapy is based on the drug encapsulation in polymeric nanoparticles followed by a localized release at the tumor site triggered by focused ultrasound. Effect of 1 MHz and 3 MHz unfocused ultrasound applied locally to the tumor on the Doxorubicin (DOX) biodistr... | Ultrasound-enhanced chemotherapy; Drug-resistant tumors; Biodistribution; Tumor sonication | 2006 |
| 193 |
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Vardeny, Zeev Valentine | Universal properties of quasi-one-dimensional excitons in semiconducting single-walled carbon nanotubes and ∏-conjugated polymers | The nature of the primary photoexcitations in semiconducting single-walled carbon nanotubes (S-SWCNTs) is of strong current interest. We have studied the emission spectra of S-SWCNTs and two different rr-conjugated polymers in solutions and films, and have also performed ultrafast pump-probe spectr... | Carbon nanotubes; pi-conjugated polymers; SWCNT; Photoexcitation; Optoelectronic properties; Quasi-one-dimensional | 2006 |
| 194 |
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Zimmer, Zachary | Urban versus rural mortality among older adults in China | Urban versus rural place of residence has proven to be a critical health determinant over time and across countries. Several studies have demonstrated an urban advantage in mortality in China. This variation by place of residence could be a function of differences in characteristics of individuals, ... | Urban mortality; Rural mortality; China | 2006 |
| 195 |
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Myers, Chris J. | Verification of timed circuits with failure-directed abstractions | Abstract-This paper presents a method to address state explosion in timed-circuit verification by using abstraction directed by the failure model. This method allows us to decompose the verification problem into a set of subproblems, each of which proves that a specific failure condition does not oc... | | 2006 |
| 196 |
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Hansen, Mark S.; Healy, Lindsey J.; Johnson, Christopher R.; Capecchi, Mario R.; Keller, Charles; Jones, Greg M. | Virtual histology of transgenic mouse embryos for high-throughput phenotyping. | A bold new effort to disrupt every gene in the mouse genome necessitates systematic, interdisciplinary approaches to analyzing patterning defects in the mouse embryo. We present a novel, rapid, and inexpensive method for obtaining high-resolution virtual histology for phenotypic assessment of mouse ... | Forkhead Transcription Factors; Paired Box Transcription Factors | 2006 |
| 197 |
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Anderson, Richard Bryan | What will become of us? looking into the crystal ball of serials work | Is it possible to predict the future of serials work? Not with perfect accuracy, of course - but to do so imperfectly is both possible and imperative.We need to be looking ahead and asking questions like these: What are the implications of the open access movement for serials staff? Will the informa... | | 2006 |
| 198 |
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Kestle, John R. W. | Work hour restrictions: impact on neurosurgical resident training at the University of Utah | Resident work hour restrictions imposed by the Accreditation Council for Graduate Medical Education became effective on July 1, 2003. To evaluate the effect of these regulations on resident operative experience, we reviewed and compared the surgical experience of junior and senior neurosurgical res... | Neurosurgical resident training; Work hour restrictions | 2006 |
