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Filters: Collection: "ir_uspace"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 176 |
 | Kestle, John R. W. | Shunt insertion in the summer: is it safe? | Object. The potential for increased complications related to the arrival of new residents in July each year has not previously been demonstrated in the neurosurgical literature. The authors investigated this phenomenon in children undergoing cerebrospinal fluid shunt surgery. Methods. Data were ob... | Ventriculoperitoneal shunt; July effect; Complication; Shunt insertion | 2006 |
| 177 |
 | Harrison, Reid R. | Signal amplification, detection and transmission in a wireless 100-electrode neural recording system | We are developing a fully-implantable neural recording system with wireless power and data transfer. As part of this system, we have developed a low-power integrated circuit that performs power rectification and and regulation, reception of configuration data, neural signal amplification and filt... | 2006 | |
| 178 |
 | Couldwell, William T. | Simple closure following transsphenoidal surgery | The most common nonendocrine complication after transsphenoidal surgery is cerebrospinal fluid (CSF) leak. Many neurosurgeons have advocated the routine reconstruction of the floor of the sella turcica using autologous fat, muscle, fascia, and either cartilage or bone after transsphenoidal surgery t... | 2006 | |
| 179 |
 | Williams, Clayton C. | Single electron tunneling force spectroscopy of an individual electronic state in a non-conducting surface | A tunneling spectroscopy technique to measure the energy level of an electronic state in a completely nonconducting surface is demonstrated. Spectroscopy is performed by electrostatic force detection of single-electron tunneling between a scanning probe and the state as a function of an applied vo... | Tunneling; Spectroscopy; Single electron; Scanning tunneling microscope | 2006 |
| 180 |
 | Sperry, John S. | Size and function in conifer tracheids and angiosperm vessels | The wide size range of conifer tracheids and angiosperm vessels has important consequences for function. In both conduit types, bigger is better for conducting efficiency. The gain in efficiency with size is maximized by the control of conduit shape, which balances end-wall and lumen resistances. | Ecological wood anatomy; vascular structure and function; water transport | 2006 |
| 181 |
 | Chuaqui, Miguel Basim | Sonora Run | Sonora Run is a 7 minute work for orchestra dedicated to the memory of the Chilean writer Roberto Bolaño. Although his novels take the reader all over the world, the Mexican state of Sonora and the Sonoran desert play a central role in several of his works, including his acclaimed major works, The... | Roberto Bolaño; Sonora Mexico | 2006 |
| 182 |
 | Wei, Y. H. Dennis | Spatial restructuring in Guangzhou city in the context of globalization and the new economy | 摘要! 全球化与新经济对城市空间结构的形成和演变产生了深刻的影响" 基于统计资料及实 际调查! 分析了广州城市空间结构的演化过程及格局" 结果显示! 广州城市演化表现出明显 的阶段性! 包括单中心增长模式# 飞地发展模式# ... | Urban spatial restructuring; Guangzhou city; Urban development; Single-core growth pattern; Wikilib pattern; Dual structure pattern; Multi-core networking pattern; Urban planning; Globalization | 2006 |
| 183 |
 | Couldwell, William T.; Harnsberger, H. Ric | Spontaneous regression of a cystic cavum septum pellucidum | A persistent cavum septum pellucidum (CSP) is present in ~0.73% of adults, although its incidence ranges from 0.14 to 18.9% depending on the detection method. Cystic CSP is even rarer. A cyst causing mass within the CSP can obstruct the intraventricular foramen, leading to blockage of CSF flow and p... | Cavum septum pellucidum; Cyst; Spontaneous regression; Decompression | 2006 |
| 184 |
 | Kestle, John R. W. | Sporadic osteochondroma of the cervical spine | Osteochondroma is the most common benign tumor of bone, but axial skeleton involvement is uncommon and usually indicates a hereditary cause such as osteochondromatosis (hereditary multiple exostosis). 1 Approximately 7% of hereditary osteochondromas occur along the vertebral column, which is double... | 2006 | |
| 185 |
 | Chuaqui, Miguel Basim | St. Mary Magdalene at the Holy Sepulchre: fantasy on a vespers hymn from the feast day of St. Mary Magdalene | Score for work for organ for the feast of St. Mary Magdalene. | score, music, organ, St. Mary Magdalene. | 2006 |
| 186 |
 | Lupton, John Mark | Stimulated emission depletion of triplet excitons in a phosphorescent organic laser | Triplet formation is investigated in an optically pumped polymer laser by detecting the phosphorescence emission after excitation. A clear correlation is observed between the onset of lasing and a saturation of phosphorescence intensity due to stimulated emission depletion of the singlet state and t... | Triplet excitons; Triplet formation; Emission depletion; Phosphorescent organic laser; Optically pumped polymer laser | 2006 |
| 187 |
 | Mathews, V. John | Stochastic mean-square performance analysis of an adaptive Hammerstein filter | Abstract-This paper presents an almost sure mean-square performance analysis of an adaptive Hammerstein filter for the case when the measurement noise in the desired response signal is a martingale difference sequence. The system model consists of a series connection of a memoryless nonlinearity fol... | 2006 | |
| 188 |
 | 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 |
| 189 |
 | 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 | |
| 190 |
 | 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 | |
| 191 |
 | 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 |
| 192 |
 | 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 |
| 193 |
 | 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 |
| 194 |
 | 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 |
| 195 |
 | 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 |
| 196 |
 | 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 |
| 197 |
 | 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 |
| 198 |
 | 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 | |
| 199 |
 | 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 |
| 200 |
 | 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 |