gebhart/patrepeval huggingface dataset:
Effects of 7, 9, and 10 psi Vapor Pressure Fuels on Multi-Day Diurnal Evaporative Emissions of Tier 2 and LEV II Vehicles (2013)

<div class="section abstract"><div class="htmlview paragraph">In order to meet more stringent evaporative emissions requirements, multiple advancements in vehicle fuel system and carbon canister technologies have been made. Regardless of technological advancements, the vapor pressure of the fuel remains a vital property in controlling evaporative emissions. A series of tests were performed to explore the effects of vapor pressure on multiday diurnal evaporative emissions for 9 and 10 psi Reid Vapor Pressure (RVP) 10% ethanol (E10) gasoline-blend fuels, followed by tests with 7 psi RVP E10 gasoline on a subset of the same vehicles. A test procedure was developed to monitor evaporative emissions, canister loading profiles and breakthrough emissions for each of the fuels. A total of five vehicles were tested on all 3 fuels, blended to represent 7, 9, and 10 psi at sea level. Tests were run over 14 days using the United States (U.S.) Federal Diurnal Cycle (72°F to 96°F) in a Sealed Housing for Evaporative Determination (SHED) at a test facility in Colorado. Two of the five vehicles had evaporative emissions systems that met the California Air Resources Board (CARB) requirements for a Partial Zero Emission Vehicle (PZEV), while the other three vehicles were certified to U.S. Tier 2 evaporative emissions standards. The data collected throughout the testing provide a correlation between the hydrocarbon slip from the vehicle canister and the fuel vapor pressure. The data indicate that achieving lower evaporative emissions can be accomplished through the use of decreased vapor pressure fuels.</div></div>
Cas1p is a membrane protein necessary for the <i>O</i>‐acetylation of the <i>Cryptococcus neoformans</i> capsular polysaccharide (2001)

The capsule is certainly the most obvious virulence factor for Cryptococcus neoformans. The main capsule constituents are glucuronoxylomannans (GXM). Several studies have focused on the structure and chemistry of the GXM component of the capsule, yet little is known about the genetic basis of the capsule construction. Using a monoclonal antibody specific to a sugar epitope, we isolated a capsule-structure mutant strain and cloned by complementation a gene named CAS1 that codes for a putative membrane protein. Although no sequence homology was found with any known protein in the different databases, protein analysis using the PROPSEARCH software classified Cas1p as a putative glycosyltransferase. Cas1p is a well-conserved evolutionary protein, as we identified one orthologue in the human genome, one in the drosophila genome and four in the plant Arabidopsis thaliana genome. Analysis of the capsule structure after CAS1 deletion showed that it is required for GXM O-acetylation.
A molded surface-micromachining and bulk etching release (MOSBE) fabrication platform on (1 1 1) Si for MOEMS (2006)

This work attempts to integrate poly-Si thin film and single-crystal-silicon (SCS) structures in a monolithic process. The process integrated multi-depth DRIE (deep reactive ion etching), trench-refilled molding, a two poly-Si MUMPs process and (1 1 1) Si bulk micromachining to accomplish multi-thickness and multi-depth structures for superior micro-optical devices. In application, a SCS scanning mirror driven by self-aligned vertical comb-drive actuators was demonstrated. The stiffness of the mirror was significantly increased by thick SCS structures. The thin poly-Si film served as flexible torsional springs and electrical routings. The depth difference of the vertical comb electrodes was tuned by DRIE to increase the devices' stroke. Finally, a large moving space was available after the bulk Si etching. In summary, the present fabrication process, named (1 1 1) MOSBE (molded surface-micromachining and bulk etching release on (1 1 1) Si substrate), can further integrate with the MUMPs devices to establish a more powerful platform.
A 1.8-3.8-GHz Power Amplifier With 40% Efficiency at 8-dB Power Back-Off (2018)

This paper presents a novel power combining architecture, referred to as distributed efficient power amplifier (DEPA) that mitigates the inherent bandwidth limiting factors in a Doherty power amplifier (DPA), namely, impedance inversion and load modulation, by distributing the conventional auxiliary amplifier of the DPA to multiple auxiliary subamplifiers along a broadband multisection impedance transformer. The proposed technique is demonstrated through the design, implementation, and measurement of a wideband DEPA having 8-dB output power back-off and 72% fractional bandwidth. The experimental results show a Doherty-like efficiency enhancement from 1.8 to 3.8 GHz. For the output power levels of 37.4±1.1 and 45.4±1.1 dBm, corresponding to 8-dB OBO and peak output power, the efficiency levels are between 41%-51% and 42%-62%, respectively. Furthermore, linearized modulated measurements show that the DEPA is linearizable and meets the spectral requirements for modern wireless communication systems.
A 43mW Bluetooth transceiver with -91dBm sensitivity (2003)

A Bluetooth transceiver has -91dBm sensitivity while drawing 24mA from a 1.8V supply. The receiver has a low-IF path with 30dB image and 9dB co-channel rejection, 80dB of AGC, digital equalization and complex PLL demodulation. The transmitter uses direct two-point modulation and draws 18mA at +6dBm output power. The DS PLL settles in 100/spl mu/s. LDO regulators power the analog and digital sections.
The Ecology of Secondary Succession (1974)

Rather than review the ample and expanding literature of succession, as Drury & Nisbet (12) have lately and nobly done, I propose to cover some recent developments in population biology that have profound implications for theories and patterns of secondary succession. Much of the conventional wisdom of successional theory rests on biased definitions and hidden assumptions. So I begin by defining what I mean by succession, and stating why I limit my discussion to secondary succession. Succession is a pattern of changes in specific composition of a community after a radical disturbance or after the opening of a new patch in the physical environment for colonization by plants and animals. If the physical environment remains con­ stant, eventually the changes in the specific composition of the community become undetectably slow or cease altogether. This late stage of succession is dignified by the term climax. The climax is often idealized as a state of constant specific composition, though of course the species and their relative abundances fluctuate statistically and vary from place to place as the physical environment changes along more or less perceptible gradients. Thus I concur with the concept of climax proposed by Whittaker (49, 50), that is, a pattern of species' abundances, which, while locally constant, varies from place to place in a continuous fashion. Because population biology treats interactions between organisms, I limit my discussion to secondary succession, the process of reestablishment of a reasonable facsimile of the original community after a temporary disturbance. Secondary succession is usually a result of interspecific competition, with pioneer species often beating later species to openings and perhaps outcompeting them in openings as well, but themselves producing an environment in which later species are competitively superior. Hence I ignore at least that component of succession that is a direct response of one or more species to secular changes in the environment: primary succession (e.g. as a lake fills with silt or as bare rock weathers to mineral soi!), seasonal succession, and succes­ sions that track climatic changes over geological time. For a short, thorough, and constructive account of successional patterns see Whittaker's (54) book and its impending new edition. Odum (37, 38) concisely
PWM converters with resistive input (1998)

An average modeling methodology is proposed for deriving pulsewidth modulation (PWM) programming rules that cause DC-DC converters to look resistive at the input terminals. The method can be useful in the design of active power factor correctors that do not need to sense the input voltage.
Template-based generation of road networks for virtual city modeling (2002)

In modern urban areas, we often find a transportation network that follows a superimposed pattern. In this paper, we propose a novel method to generate a virtual traffic network based on (1) image-derived templates, and (2) a rule-based generating system. Using 2D images as input maps, various road maps with different patterns could be produced. This traffic network generating model adjusts itself intelligently in order to avoid restricted geographical areas or urban developments. The generative model follows closely directions of elevation and connects road ends in ways that allow various types of breakpoints.
Darstellung von 1.3‐Dioxolanen aus Aldehyden und Epoxiden in neutralem Medium (1967)

Abstract Aromatische und in α‐Stellung substituierte, aliphatische Aldehyde reagieren mit Epoxiden in Gegenwart eines neutralen Katalysators in guten Ausbeuten zu 1.3‐Dioxolanen. In α‐Stellung unsubstituierte Aldehyde geben daneben noch Aldolreaktion.
Building application frameworks: object-oriented foundations of framework design (1999)

Object Technology The first experience-based guide to building object-oriented frameworks Building Application Frameworks By providing reusable skeletons on which to build new applications, frameworks can save you countless hours and thousands (even millions) of dollars in development costs. Written and edited by some of the top names in the object-oriented programming world, this is the first complete study of building frameworks. Using examples drawn from successful implementations worldwide, it walks you through all the steps of a framework development project. Providing guidance on all key technical and business issues surrounding framework construction, it covers: Techniques for developing, integrating, and adapting frameworks Leveraging existing design and code Selecting and utilizing frameworks Tracking, controlling, and documenting framework development Maintaining, measuring, and controlling framework quality Training developers in the effective use of frameworks Evaluating frameworks and framework investments
Pinhole-free pyrex glass etching using HF-H/sub 2/SO/sub 4/ mixed acid and its applications for a PDMS microflow system (2005)

Useful Pyrex glass etching method using HF and H/sub 2/SO/sub 4/ mixed acid was studied. To realize the etching behaviors of constant etch rate, high masks durability, small under cut and pinhole free, optimum composition of HF-H/sub 2/SO/sub 4/ system was found out. Pinhole-free etching, constant etching rate of 0.5 /spl mu/m/min and smooth surface of less than 4.6 nm was obtained at 0.8vol% HF and 32vol% H/sub 2/SO/sub 4/. This system realized high durability of the etching mask of Si, Cr/Au and even photoresists. This method is useful not only to fabricate Pyrex glass microchannels but also to make PDMS molds. We fabricated a prototype of the pneumatic actuated microvalve system for the single molecular imaging under total internal reflection fluorescence microscopy (TIRFM). The leakage free valve actions are confirmed and the switching time of open-close and close-open modes are 100 msec and 120 msec respectively.
The Transfusion of Red Cells (2005)

This chapter contains sections titled: The survival of transfused red cells Storage of red cells in the liquid state Collection of blood to provide components Storage of red cells in the frozen state The transfusion of red cells in anaemia
High-Power Continuous-Wave Ultraviolet Generation by Frequency Doubling of an Argon Laser (1992)

Continuous-wave 257-nm coherent light with a power of 1.2 W is generated by using an intracavity frequency doubling argon laser. In the laser resonator, an elliptical focusing technique is employed to minimize the risk of optical damage to a beta barium borate (BBO) nonlinear optical crystal without sacrificing the frequency conversion coefficient.
Cloning and characterization of the ponA gene encoding penicillin-binding protein 1 from Neisseria gonorrhoeae and Neisseria meningitidis (1997)

The ponA gene encoding penicillin-binding protein 1 (PBP 1) from Neisseria gonorrhoeae was cloned by a reverse genetic approach. PBP 1 was purified from solubilized membranes of penicillin-susceptible strain FA19 by covalent ampicillin affinity chromatography and used to obtain an NH2-terminal amino acid sequence. A degenerate oligonucleotide based on this protein sequence and a highly degenerate oligonucleotide based on a conserved amino acid motif found in all class A high-molecular-mass PBPs were used to isolate the PBP 1 gene (ponA). The ponA gene encodes a protein containing all of the conserved sequence motifs found in class A PBPs, and expression of the gene in Escherichia coli resulted in the appearance of a new PBP that comigrated with PBP 1 purified from N. gonorrhoeae. A comparison of the gonococcal ponA gene to its homolog isolated from Neisseria meningitidis revealed a high degree of identity between the two gene products, with the greatest variability found at the carboxy terminus of the two deduced PBP 1 protein sequences.
Modeling aggressive maneuvers on loose surfaces: The cases of Trail-Braking and Pendulum-Turn (2007)

In this work we initiate a mathematical analysis of rally racing techniques. We provide an empirical description of Trail-Braking (TB) and Pendulum-Turn (PT) cornering, two of the most common rally racing maneuvers. We introduce a low order vehicle model that can be efficiently used within an optimization scheme. The model incorporates the appropriate level of detail to reproduce modes of operation typical of those encountered in rally, off-road racing. We use a numerical scheme to study different trajectory optimization scenarios during cornering. We show that our modeling approach is capable of reproducing TB and PT as special cases of the minimum-time solution with additional constraints.
Nonrandom Distribution of Aberrant Promoter Methylation of Cancer-Related Genes in Sporadic Breast Tumors (2004)

Our results suggest a nonrandom distribution for promoter hypermethylation in sporadic breast cancer, with tumor subsets characterized by aberrant methylation of specific cancer-related genes. These breast cancer subgroups may represent separate biological entities with potential differences in sensitivity to therapy, occurrence of metastasis, and overall prognosis.
Guidance System Based on Image Processing (2018)

To solve the problem of blind travel, a guide system based on image processing is designed. The visual information collected by a CCD camera. The voice information is used to communicate with the user. The overall design of this system is given. Recognize the zebra line by the bipolar system value. Recognize the blind road using saturation histogram and Gaussian function.
Theoretical and experimental analysis of a chemical oxygen iodine laser (1992)

Tire de : 9th International Symposium on Gas Flow and Chemical Lasers, Heraklion (Greece), September 21-25, 1992
Lactobacillus casei prevents impaired barrier function in intestinal epithelial cells (2010)

The exact effect of probiotics on epithelial barrier function is not well understood. The aims of this study were to evaluate cytokine-induced epithelial barrier dysfunction in intestinal epithelial cells (IECs) and to study the role of probiotics in the prevention of epithelial barrier dysfunction. Caco-2 cells grown on transwell chambers were stimulated with tumor necrosis factor (TNF)-α or interferon (IFN)-γ basolaterally. Probiotic, Lactobacillus casei, was added 1 h before cytokine stimulation. MAPK inhibitors were added 15 min before L. casei stimulation. The electrical resistance and paracellular permeability of Caco-2 monolayers were measured. Distribution of zonula occludens (ZO)-1 protein was assessed by immunofluorescence, and Western blot analyses for ZO-1, p-Akt, and toll-like receptor (TLR) 2 were performed. Both TNF-α and IFN-γ stimulation on Caco-2 cells decreased transepithelial resistance (TER), increased epithelial permeability, and decreased ZO-1 expression of Caco-2 cells. In contrast, pretreatment of L. casei reversed the cytokine-induced dysfunction of TER, epithelial permeability, and ZO-1 expression. Reversal of cytokine-induced dysfunction of TER and intestinal permeability by L. casei was abrogated with MAPK inhibitor treatment. Lactobacillus casei stimulation on Caco-2 cells increased TLR2 and p-Akt expression. Probiotic, L. casei, prevents cytokine-induced epithelial barrier dysfunctions in IECs.
Placenta-derived mesenchymal stem cells improve memory dysfunction in an Aβ1–42-infused mouse model of Alzheimer’s disease (2013)

Mesenchymal stem cells (MSCs) promote functional recoveries in pathological experimental models of central nervous system (CNS) and are currently being tested in clinical trials for neurological disorders, but preventive mechanisms of placenta-derived MSCs (PD-MSCs) for Alzheimer's disease are poorly understood. Herein, we investigated the inhibitory effect of PD-MSCs on neuronal cell death and memory impairment in Aβ1-42-infused mice. After intracerebroventrical (ICV) infusion of Aβ1-42 for 14 days, the cognitive function was assessed by the Morris water maze test and passive avoidance test. Our results showed that the transplantation of PD-MSCs into Aβ1-42-infused mice significantly improved cognitive impairment, and behavioral changes attenuated the expression of APP, BACE1, and Aβ, as well as the activity of β-secretase and γ-secretase. In addition, the activation of glia cells and the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) were inhibited by the transplantation of PD-MSCs. Furthermore, we also found that PD-MSCs downregulated the release of inflammatory cytokines as well as prevented neuronal cell death and promoted neuronal cell differentiation from neuronal progenitor cells in Aβ1-42-infused mice. These data indicate that PD-MSC mediates neuroprotection by regulating neuronal death, neurogenesis, glia cell activation in hippocampus, and altering cytokine expression, suggesting a close link between the therapeutic effects of MSCs and the damaged CNS in Alzheimer's disease.
The impact of inverse photoemission spectroscopy measurements on regioregular poly(3-hexylthiophene) films (2014)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Zhi Li, Siqi Sun, Xiao Li, Rudy Schlaf; The impact of inverse photoemission spectroscopy measurements on regioregular poly(3-hexylthiophene) films. Appl. Phys. Lett. 13 January 2014; 104 (2): 021606. https://doi.org/10.1063/1.4862327 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioApplied Physics Letters Search Advanced Search |Citation Search
A header encryption of ultrasound image using absolute-value chaotic map (2014)

This paper presents a partial encryption scheme using absolute-value chaotic map for secure electronic health records (EHR). The HER system has been an emerging technology that allows medical personals to create, manage, and control medical data electronically through specific database or even web browsers. The proposed encryption scheme realizes XOR operations between separated planes of binary gray-scale image and a binaty image generated by an absolute-value chaotic map. The proposed is relatively simple containing a single absolute-value function with two constants and offers complex and robust dynamical behaviors in terms of random output values. Experiments have been performed in MATLAB using a magnetic resonance image which is divided into 64 sub-blocks and 13 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sup> iterations were proceeded for encryption. Encryption qualitative performances are evaluated through pixel density histograms, 2-dimensional power spectral density, and vertical, horizontal, and diagonal correlation plots. For the encryption quantitative measures, correlation coefficients, entropy, NPCR and UACI are realized. Demonstrations of wrong-key decrypted image are also included. The proposed encryption scheme offers a potential alternative to a secure medical data records and web browsing through cloud computing systems.
Human 5-HT<sub>1</sub> Receptor Subtypes Exhibit Distinct G Protein Coupling Behaviors in Membranes from Sf9 Cells (1997)

The G protein coupling behavior of four human 5-hydroxytryptamine receptor subtypes (5-HT1A, 5-HT1B, 5-HT1D, and 5-HT1E) has been studied in membranes from Sf9 cells expressing the individual receptors. The 5-HT1A and 5-HT1B receptors exhibited both high- and low-affinity states for agonist, with the majority of the receptors in a low-affinity state. Addition of purified G protein subunits to membranes expressing either 5-HT1A or 5-HT1B receptors shifted the majority of the receptors to a high-affinity state in the absence, but not in the presence, of guanine nucleotides. The alphai1, alphai2, alphai3, and alphao subunits were able to shift the receptors to a high-affinity state with either betagammabrain or betagammaretina while alphat subunits were inactive regardless of which betagamma preparation was used. A significantly higher affinity for agonist was observed with both receptors in the presence of alphai3 subunits compared with either alphai2 or alphao subunits, while a significantly lower concentration of alpha subunits was required for a maximal affinity shift of 5-HT1A receptors compared with 5-HT1B receptors (EC50 values of 6.4 and 12. 0 nM, respectively). The 5-HT1D and 5-HT1E receptors exhibited only a single affinity state for agonist. Addition of purified G protein subunits to membranes containing 5-HT1D receptors caused a small increase in affinity for agonist that was only partially reversed by guanine nucleotides while the addition of purified G protein subunits to membranes containing 5-HT1E receptors had no affect on agonist binding. Thus when expressed in an identical membrane environment these four closely related 5-HT1 receptor subtypes exhibit different G protein coupling behaviors.