gebhart/patrepeval huggingface dataset:
Gas Phase Structures, Energetics, and Potential Energy Surfaces of Disilacyclohexanes (2011)

The molecular structures of 1,4-, 1,3-, and 1,2-disilacyclohexanes (denoted as 14, 13, and 12, respectively) were investigated by means of gas electron diffraction (GED). Each molecule was found to possess a chair as the most stable conformation in the gas phase, the point group being C(2h), C(s), and C(2), respectively. Experimental GED structures are in good agreement with theoretical calculations (MP2/cc-pVTZ and B3LYP/cc-pVTZ). A qualitative ring strain analysis suggests 14 to be the most stable and 12 the least stable of the parent disilacyclohexanes. Relative energy calculations with the G4 model chemistry protocol, on the other hand, predict 13 to be the most stable isomer, 5.9 and 14.2 kcal/mol more stable than 14 and 12, respectively. The enhanced stability of 13 compared to 14 is in agreement with an analysis on endocyclic bond lengths and bond polarities. The heats of formation (G4 calculations) are predicted to be -12.3, -18.1, and -3.9 kcal/mol for 14, 13, and 12, respectively. The potential energy surface (PES) and the lowest energy path for the chair-to-chair inversion have been calculated for each isomer. In addition to the two chair forms in each case and some half-chair or sofa-like transition states (four in the case of 14, and two in the case of 13), there are two twist forms found as stationary points on the PES of 14, six twist and six boat forms on the PES of 13, and four twist and six boat forms on the PES of 12.
Raised floor computer data center: effect on rack inlet temperatures of chilled air exiting both the hot and cold aisles (2003)

This paper focuses on the effect of the rack inlet temperatures resulting from chilled air exhausting from perforated tiles situated in both the hot and cold aisles of a raised floor data center. Only the above floor (raised floor) flow and temperature distributions were analyzed for various flowrates exhausting from the perforated tiles. A Computational Fluid Dynamic(CFD) model was generated for the room with electronic equipment installed on a raised floor with particular focus on the effects on rack inlet temperatures of equipment heat load, placement of air conditioning (A/C) units and chilled air flowrates. Forty racks of data processing (DP) equipment were arranged in rows in a data center cooled by chilled air exhausting from perforated floor tiles. The chilled air was provided by four A/C units placed inside a room 12.1 m wide x 13.4 m long. Since the arrangement of the racks in the data center was symmetric only one-half of the data center needed to be modeled. The numerical modeling was performed using a commercially available finite control volume computer code called Flotherm (Trademark of Flomerics, Inc.). The flow was modeled using the k-e turbulence model. Results are displayed to provide some guidance on the design and layout of a data center.
Adaptively Sampled Distance Fields: A General Representation of Shape forComputer Graphics (2023)

Adaptively Sampled Distance Fields (ADFs) are a unifying representation of shape that integrate numerous concepts in computer graphics including the representation of geometry and volume data and a broad range of processing operations such as rendering, sculpting, level-of-detail management, surface offsetting, collision detection, and color gamut correction. Its structure is uncomplicated and direct, but is especially effective for quality reconstruction of complex shapes, e.g., artistic and organic forms, precision parts, volumes, high order functions, and fractals. We characterize one implementation of ADFs, illustrating its utility on two diverse applications: 1) artistic carving of fine detail, and 2) representing and rendering volume data and volumetric effects. Other applications are briefly presented.
Effects of a Developmental Physical Therapy Program on Oxygen Saturation and Heart Rate in Preterm Infants (1989)

To evaluate the physiologic responses of 14 preterm infants to physical therapy, pulse oximetry was used to measure the percentage of arterial oxygen saturation (SaO2) and heart rate during baseline, intervention, and recovery phases. Treatment consisted of six one-minute activities that were equally divided between the side-lying and supported-sitting positions. The order of position and activities was randomly varied. A one-way analysis of variance for repeated measures revealed no significant changes in mean SaO2 as a function of the position or duration of intervention. Mean heart rate increased significantly as a result of intervention (p less than .0001), but there was no significant difference between the baseline and recovery phases. Further analysis indicated that the change in heart rate was not a function of duration of intervention. The results indicate that the preterm infants were able to tolerate the intervention without desaturation. The return of heart rate to baseline values during the recovery phase suggested a normal physiologic response to exercise. Despite some technical limitations, pulse oximetry is recommended to monitor preterm infants during physical therapy.
The Recognition and Treatment of First-Time Shoulder Dislocation in Active Individuals (2008)

Therapy, level 5.
Investigating the overload capacity of a direct-driven synchronous permanent magnet wind turbine generator designed using high-voltage cable technology (2007)

Utilization of wind energy to maximum permissible limits for generating electrical power has become necessary to meet the global energy demands. Under such circumstances the present day conventional wind turbine generators pose a limitation regarding the overload capability, specifically significant when they need to operate in high-energy wind conditions. It is proposed that by employing a completely different generator winding concept, based on high-voltage cable technology, to a specific generator, it is possible to increase the generator overload capabilities and thereby making it operationally efficient in high wind speed situations. Therefore, the possibility of extracting more energy is predicted to increase. Simulations, based on finite-element methods combined with external circuit models for the generator, have been performed. The results demonstrate that under given thermal and electrical restrictions, a direct-driven permanent magnet synchronous wind turbine generator, based on high-voltage cable windings, is capable of being overloaded more than twice the rated power, thus making it very suitable for strong wind situations. Copyright © 2007 John Wiley & Sons, Ltd.
Atmospheric turbulence measurements over desert site using ground-based instruments, kite/tethered-blimp platform, and aircraft relevant to optical communications and imaging systems: preliminary results (2006)

New results of the (temperature) refractive index structure parameter (C<sub>T</sub><sup>2</sup>), C<sub>n</sub><sup>2</sup> are presented from fast response sensor observations near the ground and also using a kite/tethered blimp platform and an aircraft, at the Edward Air Force Base in Mojave Desert, California. Additional optical measurements include near-ground scintillation observations over horizontal paths. Atmospheric turbidity were also calculated from direct beam solar radiation measurements using pyrheliometer. Comparisons were made of the observed profiles of refractive index structure parameters (C<sub>n</sub><sup>2</sup>) with theoretical modeled profiles, and two derived quantities such as transverse coherence length (r<sub>0</sub>) and isoplanatic angle (&#952;<sub>0</sub>) for a slant path are discussed. All of these parameters are the major indicators of turbulence and are important to design an aircraft or space-craft-based free-space laser communication and high resolution optical synthetic-aperture imaging systems. Non-isotropic turbulence observations from some of the data will be pointed out. Probability density functions (PDF) of the distribution of C<sub>n</sub><sup>2</sup> will be described using histograms. Fundamental limits imposed by atmospheric effects in high data rate communication and optical synthetic-aperture imaging systems will be discussed.
Mass spectrometry reveals modularity and a complete subunit interaction map of the eukaryotic translation factor eIF3 (2008)

The eukaryotic initiation factor 3 (eIF3) plays an important role in translation initiation, acting as a docking site for several eIFs that assemble on the 40S ribosomal subunit. Here, we use mass spectrometry to probe the subunit interactions within the human eIF3 complex. Our results show that the 13-subunit complex can be maintained intact in the gas phase, enabling us to establish unambiguously its stoichiometry and its overall subunit architecture via tandem mass spectrometry and solution disruption experiments. Dissociation takes place as a function of ionic strength to form three stable modules eIF3(c:d:e:l:k), eIF3(f:h:m), and eIF3(a:b:i:g). These modules are linked by interactions between subunits eIF3b:c and eIF3c:h. We confirmed our interaction map with the homologous yeast eIF3 complex that contains the five core subunits found in the human eIF3 and supplemented our data with results from immunoprecipitation. These results, together with the 27 subcomplexes identified with increasing ionic strength, enable us to define a comprehensive interaction map for this 800-kDa species. Our interaction map allows comparison of free eIF3 with that bound to the hepatitis C virus internal ribosome entry site (HCV-IRES) RNA. We also compare our eIF3 interaction map with related complexes, containing evolutionarily conserved protein domains, and reveal the location of subunits containing RNA recognition motifs proximal to the decoding center of the 40S subunit of the ribosome.
Practical Issues of Wavefront-Guided Refractive Surgery (2005)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text G. H. Pettit, J. A. Campin, and K. K. Liedel, "Practical Issues of Wavefront-Guided Refractive Surgery," in Frontiers in Optics, OSA Technical Digest Series (Optica Publishing Group, 2005), paper FThA4. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Gain in CW laser pumped FIR laser gases (1980)

This study is an investigation of the FIR radiation amplification in CW laser excited gases so essential for a complete quantitative understanding of the FIR laser cycle. The small-signal FIR gain coefficients have been measured as functions of the relevant parameters for two transitions in CH <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> OH and three in CH <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> F <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> . The measurements, demonstrating the influence of coherent pumping have been compared to quantum-mechanical calculations of a three-level system, interacting resonantly with two coherent fields. The good agreement found between theory and measurements indicates the correctness of the theory in predicting the gain properties of the CW FIR lasers. Also FIR gain saturations have been measured directly and exhibit the expected features.
Characterization of Cyclophilin 40: Highly Conserved Protein That Directly Associates with Hsp90. (1996)

Cyclophilin 40 (CyP4O) is a recently identified member of the cyclophilin family that may be a component of unactivated steroid receptor complexes. It consists of an N-half portion that is highly homologous to cyclophilin A and has peptidyl prolyl isomerase (PPIase) activity, and a C-half portion that resembles the C-terminal portion of FKBP52 (FK506 binding protein 52), another component of unactivated steroid receptor complexes. To better understand the structure and functional characteristics of this new class of cyclophilin, we have raised monoclonal antibodies against the C-half portion of human CyP4O. Immunostaining with the antibodies showed its preferential localization in cytoplasm. One antibody cross-reacted with a 45 kDa protein in yeast, suggesting high conservation throughout evolution. A CyP4O-associated protein was isolated from rabbit reticulocyte lysate by means of an affinity resin, and was identified as hsp90. The C-half portion of CyP4O was necessary and sufficient for the interaction.
Affinity Selection of DNA-Binding Proteins from Yeast Genomic DNA Libraries by Improved Phage Display Vector (2002)

Phage display is a useful means of identifying and selecting proteins of interest that bind specific targets. In order to examine the potential of phage display for the genome-wide screening of DNA-binding proteins, we constructed yeast genomic libraries using lambda foo-based vectors devised in this work. After affinity selection using GAL4 UAS(G) as a probe, phages expressing GAL4 were enriched approximately 5 x 10(5)-fold from the library. Approximately 90% of polypeptides encoded in correct translation reading frames by the selected phages were known or putative polynucleotide-binding proteins. This result clearly indicates that the modified lambda phage display vector in combination with our enrichment technique has great potential for the enrichment of DNA-binding proteins in a sequence-specific manner.
Kinetics and Mechanism of trans-[Cr(cyca)(OH)F]+Complex Oxidation by [Fe(CN)6]3- Ion in Strongly Alkaline Aqueous Solutions (2006)

Oxidation of the trans-[Cr(cyca)(OH)F] + complex, where cyca = meso-5,5,7,12,14-hexamethyl-l,4,8,ll-tetraazacyclotetradecane, by [Fe(CN) 6 ] 3- ion in strongly alkaline media has been studied. A long-lived intermediate chromium(V) species was detected basing on the EPR signal at g iso =1.986. The hyperfine structure of the main EPR signal is consistent with the d l -electron interactions with four equivalent or nearly equivalent nitrogen nuclei and [Cr v =O(cyca ox )] 3+ formula, where cyca ox = oxidized cyca, can be postulated for the intermediate Cr V complex. Kinetics of the rate limiting stage - electron transfer from the chromium(III) complex - has been studied in details applying an excess of the reductant and [OH - ] at ionic strength equal 2.0 M. The rate law: -d[Fe III ] dt = d[CR IV ] dt = 1 2 k cb R[OH - ] 1+1 2(K-1)[OH - ] [CR III ][Fe III ] is consistent with an outer-sphere electron transfer from the conjugate base (cb) of the reductant fonned in a precquilibrium (K) step. Reactivity of the deprotonated chromium(III) complex is characterized by k 298 cb = 9.7, AH # = (44.1± 0.5) kJ·mol -1 , ΔS # = (-78.0 ±2.0) J·K -1 ·mol -1 and the preequilibrium step - by K 298 = 0.237, ΔH 0 = (11.5 ± 1.8) kJ·mol -1 , ΔS 0 = (26.6 ± 5.8) J·K -1 ·mol -1 .
Performance Characterization of Polyimide-Carbon Fiber Composites for Future Hypersonic Vehicles (2010)

Abstract : The Air Force, Army, and Navy have initiated research and development progress to develop hypersonic vehicles in the Mach 5-15 range. Two broad categories are being considered, namely: (i) vehicles that fly at low altitudes for short times (minutes) over distances of hundreds of miles and (ii) flights that are global and cover lower space orbits over periods of hours. Specifically, the Air Force for future vehicles need to be able to reach anywhere in the world in one hour (Vista 25 program). The primary structures of hypersonic vehicles need to be lightweight, strong and thermally durable for the duration of the flight (or for multiple flights in the case of reusable vehicles). Transition-metal carbides, referred to as ultra-high temperature (UHT) materials, are interesting because they are refractory materials with the highest known melting points (that in many cases exceed 2600 deg C). Applications for UHT materials such as hypersonic flight, atmospheric re-entry, and rocket propulsion, with temperatures exceeding 3000 deg C, challenge the survivability of many known materials currently in use. Unfortunately, the synthesis of the refractory transition-metal carbides requires high temperatures that can exceed 1700 deg C. The in-situ synthesis of transition-metal carbides, in an argon atmosphere using transition-metal halide salts solution-processed with polymer matrices, is described here as a low temperature method for making UHT carbides. For example, tantalum carbide (Tm = 3880 deg C) can be produced at temperatures as low as 1000 deg C with high yield (>80%). This relatively low temperature procedure is relatively universal in terms of the variety of transition metals (Ta, Hf, Nb, etc.) that can be used, making it very useful for a wide variety of high temperature applications. The AFR-PEPA-N polyimide-carbon fiber composite system developed by AFRL and AFOSR sponsored programs is the leading candidate as the starting material for this conversion process.
Biomimicry Sound Source Localization with "Fishbone" (2001)

Human can localize a sound source even when it is on the median plane. The sense of elevation like this is called as monaural sound source localization. The cues are said to be generated by the reflection on the pinna as the elevation-dependent dips (zeros) of the spectral distribution. In human auditory system, they are detected by cochlea. In this paper, by using Fishbone sensor for direct frequency decomposition of the incident sound, we realize this principle as a novel sensor system which consists of 1) a logarithmic spiral reflector mimicking the human pinna, and 2) a Fishbone sensor mimicking human cochlea. We describe a theory for an optimal shape of a reflector (pinna). We show a design and fabrication of the overall system and experimental results using it.
A porcine ex vivo lung perfusion model with maximal argon exposure to attenuate ischemia-reperfusion injury (2017)

Argon (Ar) is a noble gas with known organoprotective effects in rodents and in vitro models. In a previous study we failed to find a postconditioning effect of Ar during ex vivo lung perfusion (EVLP) on warm-ischemic injury in a porcine model. In this study, we further investigated a prolonged exposure to Ar to decrease cold ischemia-reperfusion injury after lung transplantation in a porcine model with EVLP assessment. Domestic pigs (n = 6/group) were pre-conditioned for 6 hours with 21% O 2 and 79% N 2 (CONTR) or 79% Ar (ARG). Subsequently, lungs were cold flushed and stored inflated on ice for 18 hours inflated with the same gas mixtures. Next, lungs were perfused for 4 hours on EVLP (acellular) while ventilated with 12% O 2 and 88% N 2 (CONTR group) or 88% Ar (ARG group). The perfusate was saturated with the same gas mixture but with the addition of CO 2 to an end-tidal CO 2 of 35-45 mmHg. The saturated perfusate was drained and lungs were perfused with whole blood for an additional 2 hours on EVLP. Evaluation at the end of EVLP did not show significant effects on physiologic parameters by prolonged exposure to Ar. Also wet-to-dry weight ratio did not improve in the ARG group. Although in other organ systems protective effects of Ar have been shown, we did not detect beneficial effects of a high concentration of Ar on cold pulmonary ischemia-reperfusion injury in a porcine lung model after prolonged exposure to Ar in this porcine model with EVLP assessment.
ChemInform Abstract: Rapid Access to Enantiopure Bupropion and Its Major Metabolite by Stereospecific Nucleophilic Substitution on an α‐Ketotriflate. (2001)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Scenarios - A tool for starting a research process (1998)

Scenarios can be used as a tool for starting a research process within a group. When putting together a research group of people with different backgrounds, differentcompetencies and different preconceived ideas, special attention has to be put on the problem of integration.Many different tools can be used to help merging thedifferent approaches of the individuals constituting thegroup. One such tool is scenario work. Trends arecreated by analyzing and structuring the environment around the project. Combining and extrapolating the trends gives a basis for creating the scenarios. The scenarios are then used to help refining research issues. Both the process and the result are hence of importance. The process aims at revealing the different approachesand possible conflicts due to the different scientific andresearch traditions among the members of the group. Theresult forms a basis for refining and limit the researchquestion.

The work within the 4th Generation Wireless Infrastructure project group of the PCC-project aims atfinding important design issues for the infrastructure of a future wireless communication system. Using the scenarios as a starting point the research questions originally put, have been successfully challenged andrefined.
Incisional Hernia After Laparoscopic Nephrectomy With Intact Specimen Removal: Caveat Emptor (1997)

Our experience has led us to avoid a lower flank port connecting incision for specimen removal. Instead we changed to a midline or subcostal incision in these patients. In addition, we believe that with the availability of the impermeable organ entrapment sacks there is less need for intact specimen removal even for renal tumors. Currently large benign kidneys (autosomal dominant polycystic kidney disease) are morcellated in situ to a suitable size for entrapment, while renal tumors are entrapped and morcellated directly. Presently our only indication for intact removal is in the case of a renal pelvic or caliceal transitional cell cancer.
Calditrichota phyl. nov. (2021)

Abstract Cal.di.tri.cho'ta. N.L. fem. n. Caldithrix the type genus of the phylum; ‐ ota ending to denote a phylum; N.L. fem. pl. n. Calditrichota the phylum of Caldithix . The phylum Calditrichota was circumscribed on the basis of the phylogenetic analysis of 38 universally conserved single‐copy proteins present in Bacteria and Archaea . At present, it includes only one class, one order, and one family with two genera of moderately thermophilic, anaerobic organotrophic bacteria, which are capable of nitrate respiration and inhabit submarine hydrothermal environments. Taxonomic and Nomenclature Notes According to the List of Prokaryotic names with Standing in Nomenclature (LPSN), the taxonomic status of the phylum Calditrichota is: correct name (last update, February 2025) * . LPSN classification: Bacteria / Pseudomonadati / Calditrichota The phylum Calditrichota can also be recovered in the Genome Taxonomy Database (GTDB) as p__Calditrichota (version v220) ** . GTDB classification: d__Bacteria / p__Calditrichota * Meier‐Kolthoff et al. ( 2022 ). Nucleic Acids Res , 50 , D801 – D807 ; DOI: 10.1093/nar/gkab902 ** Parks et al. ( 2022 ). Nucleic Acids Res , 50 , D785 – D794 ; DOI: 10.1093/nar/gkab776