gebhart/patrepeval huggingface dataset:
24S-hydroxycholesterol induces inflammatory gene expression in primary human neural cells (2005)

24S-hydroxycholesterol, the primary oxidation product of cholesterol in the brain, plays a key role in cholesterol elimination and homeostasis. While the concentration of this neurotoxic oxysterol decreases with age, 24S-hydroxycholesterol is elevated in Alzheimer's disease. In this study, we examined the effects of 24S-hydroxycholesterol on gene expression in human neural cells, a primary coculture of neurons and glia useful for studying pathogenic mechanisms in Alzheimer's disease. DNA array and Western analysis revealed elevations in the expression of a pro-inflammatory gene family that included beta-amyloid precursor protein, cyclooxygenase-2, cytosolic phospholipase A2 and heat shock protein 70, an effect that was partially suppressed by simvastatin. These data indicate that cholesterol oxides induce atypical gene expression in neural cells that may contribute to the etiology or pathogenesis of inflammatory brain disease.
III&#x2013;V triple junctions and MQW-fine tuning at 1 EV in synergy for high efficiency solar cells (2009)

High efficiency triple junctions (>40%) in synergy with tuned MQW pin structures may lead to even higher efficiency values for a new class of solar cells that include quantum size effects. This paper exploits the possibility of quantum wells in superlattice form where photocarrier conduction is feasible via thermionic and/or tunneling conduction. Such structures may be designed to absorb at selective bands of the solar spectrum (e.g. 1 eV range); carrier confinement occurs at concentrations from 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">12</sup> - 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">13</sup> cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> pew quantum well. A top three junction cell is simulated at 28.4% efficiency (AlGaAs/GaAs/GaAs), and bottom multijunction cell (MQW GaAs-Ge superlattice) at 22%. The synergy of the two units leads to a projected efficiency near 44.2%, a clear step to highest efficiencies feasible in the immediate future. Our design opens the way to highly effective solar cells via (a) triple junctions and (b) 2-dimensional electronic transport (c) flexibility in material selection.
Adaptive wavelet system for image representation (2002)

Adapting wavelet systems to their input signals appears to be a viable option to improving the performance of current wavelet image representation. We study the problem of computing an image based optimal wavelet basis with compact support for image representation and provide a general algorithm for computing the optimal wavelet basis. We parameterize the mother wavelet and scaling function of wavelet systems through a set of real coefficients of the relevant quadrature mirror filter (QMF) banks. We then introduce entropy cost as an information measure to describe the distance between a given digital image and its projection into the subspace spanned by the wavelet basis. The optimal basis for the given image is obtained through minimizing this information measure. The resulting subspace is used-for image analysis and synthesis. Experiments on medical images show improved compression ratios due to the adaptation of the optimal wavelet basis and demonstrate the potential applications of our methodology in image compression.
Seawater in Chalk: An EOR and Compaction Fluid (2008)

Summary North Sea chalk reservoirs are characterized as being purely biogenic and naturally fractured, having low matrix permeability and very high porosity (30 to 45%). The reservoir temperature is usually high, more than 90°C, and the wetting conditions appear to be moderately water-wet to neutral. Even though the permeability contrast between the matrix and fractures is significant, the injection of seawater has been a great success with the Ekofisk field as an example (estimated oil recovery is now approaching 50%). Seawater improves the water wetness of chalk, which increases the oil recovery by spontaneous imbibition and viscous displacement. During the primary production phase by pressure depletion, extensive compaction was observed and, at that time, it was regarded as an important drive mechanism for oil recovery. The compaction continued in the waterflooded areas even though the reservoir was repressurized by the injected seawater. The phenomenon has been described as water weakening of chalk, and production costs have increased because of the loss of wells and substitution of platforms. This paper gives an overview of the chemical aspects of the interaction between seawater and the chalk. Surface active components in seawater, such as Ca2+, Mg2+, and SO42-, will play an important role in both wettability modification and rock mechanics. In that sense, injection of seawater into chalk must be regarded as a tertiary-oil-recovery technique. Chemical models describing the wettabilty alteration and enhanced water weakening of chalk by seawater are suggested and presented.
Locating Leaks with TrustRank Algorithm Support (2015)

This paper presents a methodology to quantify and to locate leaks. The original contribution is the use of a tool based on the TrustRank algorithm for the selection of nodes for pressure monitoring. The results from these methodologies presented here are: (I) A sensitivity analysis of the number of pressure transducers on the quality of the final solution; (II) A reduction of the number of pipes to be inspected; and (III) A focus on the problematic pipes which allows a better office planning of the inspection works to perform atthe field. To obtain these results, a methodology for the identification of probable leaky pipes and an estimate of their leakage flows is also presented. The potential of the methodology is illustrated with several case studies, considering different levels of water losses and different sets of pressure monitoring nodes. The results are discussed and the solutions obtained show the benefits of the developed methodologies.
Research: STH: For Faculty: Faculty Publications (2018)

The guide for faculty at the BU School of Theology Library. Click on the BU School of Theology bar above to return to our website home page.
Multibiometrics based on palmprint and handgeometry (2005)

This paper described our approach of multibiometrics in a single image. Firstly, a new method for capturing the key points of hand geometry is proposed. Then, we described our new method of palmprint feature extracting. By using projection transform and wavelet transform, this method considered both the global feature and local detail of a palmprint texture and proposed a new kind of palmprint feature. We also proposed a twice segmentation method for handgeometry feature extraction. In the processing of feature matching, we analyzed the weakness of the traditional Euclidian square norm method, and introduced an improved method. The experimental results demonstrated the effectiveness and accuracy of these proposed method.
Th1/Th17 cytokine profiles in patients with reactive arthritis/undifferentiated spondyloarthropathy. (2007)

Increased IL-17, IL-6, TGF-beta, and IFN-g concentrations in ReA/uSpA than in RA suggest that Th1 and Th17 cells could be the major agents in inflammation in ReA/uSpA.
Viability testing and characterization of germination of fungal spores by automatic image analysis (1993)

Fungal spores are used in the laboratory for culture maintenance and at laboratory and other scales as inocula for fermentations. The spore swelling and germination processes constitute a major part of the lag phase, and the subsequent culture morphology and productivity can be greatly influenced by the initial concentration and condition of the spores. An image analysis method has been developed for assessing the viability and the germination characteristics of fungal spores in submerged cultures. Structural variations during germination, i.e., swelling, germ tube formation, and germ tube elongation, are measured in terms of distributions of spore volumes and of germ tube lengths and volumes. These measurements are fully automatic and give a very rapid assessment of spore viability. This image analysis method might be used as a tool in culture maintenance and for determining the quality of inocula for fungal fermentations.
Memristors for the curious outsiders (2018)

We present both an overview and a perspective of recent experimental advances and proposed new approaches to performing computation using memristors. A memristor is a 2-terminal passive component with a dynamic resistance depending on an internal parameter. We provide an brief historical introduction, as well as an overview over the physical mechanism that lead to memristive behavior. This review is meant to guide nonpractitioners in the field of memristive circuits and their connection to machine learning and neural computation.
Efficient SIMD code generation for irregular kernels (2012)

Array indirection causes several challenges for compilers to utilize single instruction, multiple data (SIMD) instructions. Disjoint memory references, arbitrarily misaligned memory references, and dependence cycles in loops are main challenges to handle for SIMD compilers. Due to those challenges, existing SIMD compilers have excluded loops with array indirection from their candidate loops for SIMD vectorization. However, addressing those challenges is inevitable, since many important compute-intensive applications extensively use array indirection to reduce memory and computation requirements. In this work, we propose a method to generate efficient SIMD code for loops containing indirected memory references. We extract both inter- and intra-iteration parallelism, taking data reorganization overhead into consideration. We also optimally place data reorganization code in order to amortize the reorganization overhead through the performance gain of SIMD vectorization. Experiments on four array indirection kernels, which are extracted from real-world scientific applications, show that our proposed method effectively generates SIMD code for irregular kernels with array indirection. Compared to the existing SIMD vectorization methods, our proposed method significantly improves the performance of irregular kernels by 91%, on average.
The potential for Laplacian maps to solve the inverse problem of electrocardiography (1996)

This paper presents a method to solve the inverse problem of electrocardiography using the Laplacian of the body surface potentials. The method presented is studied first using trade-off curves from a concentric spheres model representing a heart-torso system. Then a more conventional study is undertaken where a limited number of current dipoles are placed within the inner sphere and noise is added to the resulting potentials and Laplacians on the surface of the outer sphere. The result indicate that measurements of the outer surface Laplacian can more accurately reconstruct epicardial potentials than measurements of the outer surface potentials. The reconstructions are more accurate in that extrema are placed very close to their correct positions and multiple extrema and high potential gradients are recovered. Identical conclusions are observed in the presence of noise and even when the Laplacians are subject to greater noise than the potentials.
Interaction of Latex Polymers with Cement-Based Building Materials (2014)

In this study the interaction of non-ionic ethylene-vinylacetate and carboxylated styrene-butadiene copolymers with inorganic binders was investigated. Experiments were performed by using aqueous latex dispersions as well as their corresponding re-dispersible powders in order to assess the impact of the spraying aids. The latex powders were prepared via spray drying of the aqueous mother liquors under the addition of the poly(vinylalcohol) as protective colloid and kaolin as anti-caking agent.
Die Erfassung der einzelnen innerbetrieblichen Leistungsarten (1956)

Die bisher entwickelten Grundsätze über die Erfassung der innerbetrieblichen Leistungen sind für jede Leistungsart anzuwenden. Hier soll die Anwendung nur für die wichtigsten innerbetrieblichen Leistungen dargestellt werden.
New Civionics Technologies for Structural Health Monitoring (2010)

Civionics is the synergistic combination of civil engineering, electrical engineering, computer engineering, photonics, and other disciplines for structural health monitoring. The goal is to optimize design techniques and understand structural performance. This article explains how civionics technologies, especially virtual instrumentation, can be applied to civil engineering projects. Virtual instrumentation has been used in civil engineering projects in China, including the Donghai Bridge and several Beijing Olympic venues (including a stadium, aquatics center, base isolated data center, 2 high-rise buildings, a concrete arch dam and a cable stayed bridge). In virtual instrumentation, user-defined software runs on a computer coupled with instrumentation hardware to create an intelligent system that meets the exact requirements of a specific application. These structures demonstrate how virtual instrumentation can provide more complete, more capable, and lower cost structural test and monitoring systems. Virtual instrumentation also provides engineers with the feedback necessary for optimizing designs and better understanding infrastructure performance for maintenance and repair purposes.
Reduction of ambient magnetic field noise for high-T/sub c/ SQUID applications (1997)

We discuss results of our investigations on ambient noise reduction using localized high-T/sub c/ (HTS) passive magnetic shields. We have quantified our results in terms of shielding factors for ambient noise, and signal-to-noise improvement ratio (SNIR) for source fields. Issues such as the critical fields of our HTS shields and their flux noise are also discussed. The relative merits of this and other noise reduction techniques are discussed vis-a-vis magnetocardiography (MCG) and nondestructive testing (NDT) of materials in an unshielded environment.
Design Option of Heat Exchanger for the Next Generation Nuclear Plant (2008)

The Next Generation Nuclear Plant (NGNP), a very High temperature Gas-Cooled Reactor (VHTR) concept, will provide the first demonstration of a closed-loop Brayton cycle at a commercial scale, producing a few hundred megawatts of power in the form of electricity and hydrogen. The power conversion unit (PCU) for the NGNP will take advantage of the significantly higher reactor outlet temperatures of the VHTRs to provide higher efficiencies than can be achieved with the current generation of light water reactors. Besides demonstrating a system design that can be used directly for subsequent commercial deployment, the NGNP will demonstrate key technology elements that can be used in subsequent advanced power conversion systems for other Generation IV reactors. In anticipation of the design, development and procurement of an advanced power conversion system for the NGNP, the system integration of the NGNP and hydrogen plant was initiated to identify the important design and technology options that must be considered in evaluating the performance of the proposed NGNP. As part of the system integration of the VHTRs and the hydrogen production plant, the intermediate heat exchanger is used to transfer the process heat from VHTRs to the hydrogen plant. Therefore, the design and configuration of the intermediate heat exchanger is very important. This paper will include analysis of one stage versus two stage heat exchanger design configurations and simple stress analyses of a printed circuit heat exchanger (PCHE), helical coil heat exchanger, and shell/tube heat exchanger.
Functional analysis of the TMPRSS2:ERG fusion gene in cisplatin-induced cell death (2016)

The TMPRSS2:E‑twenty‑six (ETS) gene fusion occurs frequently in a high proportion of patients with prostate cancer (PCa) in Western countries, and the aberrant expression of TMPRSS2: v‑ETS avian erythroblastosis virus E26 oncogene homolog (ERG), the most common form of the corresponding protein, can regulate cell migration and contribute to tumor invasion and metastasis. However, its association with other cellular events, and in particular, cell death, remain unknown. To examine the function of such fusion genes, an expression plasmid containing the TMPRSS2:ERG (T1/E5) sequence (ΔERG) from a patient sample was constructed and transiently transfected into DU145 cells, which do not express the fusion gene. It was found that the overexpression of ΔERG significantly inhibited the ability of cisplatin to induce apoptosis in DU145 cells. By contrast, VCaP cells, which do contain TMPRSS2:ERG, were sensitized to cisplatin‑induced apoptosis through siRNA inhibition of the fusion gene. To elucidate the underlying mechanism, a stable cell line expressing the ΔERG gene was constructed. Expression of ΔERG did not affect cell migration, but did protect cells from DNA damage and apoptosis induced by cisplatin. Furthermore, knockdown of ΔERG by short interfering RNA resulted in cells regaining their sensitivity to cisplatin. Finally, the gene coding for activating transcription factor 5, which is important for cell survival, may be upregulated by ΔERG. Taken together, these data point to a new function of the TMPRSS2:ERG fusion gene in regulating the apoptotic pathway.
Synthesis and Characterization of Silica-Lavender Microencapsulation by Sol Gel-Emulsion Method for Anti Mosquito Textile (2013)

Microencapsulation is a new breakthrough in the field of nanotechnology that can be used for various applications, in particular for the application of controlled release material for functional textiles which were added by certain active substances and gave effects when used such as fragrance and anti mosquito textile. In this research, the synthesis of silica-lavender microencapsulation for anti-mosquito textile had been conducted successfully via sol-gel emulsion process. Sodium silicate solution which was emulsified into the lavender oil as an active ingredient acted as oil phase and ethanol solution acted as water phase. The addition of chitosan as surfactant and polymer for encapsulation with starch as soft template affected the rod-structure formation of nanorod. SEM result showed the morphology of silica-lavender. The rod has the average diameter size of 0.042-0.206 μm. The optimum result of rod-structure was obtained by adding 1% (v/v) of chitosan. FTIR analysis indicated the presence of absorbance peaks at wavenumber of 1411.89, 958.62, and 1078.2 cm -1 respectively for C-H (alkanes), C-H (alkenes) and ester functional groups which indicated the lavender compound in silica-lavender. UV-Vis analysis showed the maximum absorbance at wavelength of lavender at 350 nm. The combination of morphology and chemical properties of silica-lavender modified by chitosan-starch made this material as a candidate material for application in functional textile.
Design of high-voltage transistor for PDP data driver (2003)

PDP data driver accomplishes high voltage output controlled by low voltage signal, in the chip the key is the design of the high voltage transistor. A high voltage CMOS(HV CMOS) being compatible with CMOS process and the convert circuit of voltage have been designed. The characteristic about the HV CMOS breakdown is analyzed by simulating with TSUPREM 4 and MEDICI. The analysis of the HV CMOS in the approached chip has been done and it shows that the breakdown voltage of the designed HV transistor is higher than 80 V and the current is more than 40?mA.
Japanese, U.S Tourists: Hotel Selections (2001)

The author reports the results of an exploratory study concerning the importance placed on attributes of hotel selection by Japanese and American guests and cultural differences between these two groups, which represent the largest market for Korean international tourist hotels. The findings suggest that Hofstede's (1960) four dimensions of cultural values can be used to help marketers better understand their guest's hotel selection criteria.
Improvement of Some Vegetatively Propagated Ornamentals By Gamma Radiation (1977)

Studies were made to induce mutations in some vegetatively propagated ornamentals like, Chrysanthemum, Dahlia, Hibiscus, Acalypha, Jresine, etc. by acute as well as chronic gamma irradiation. In both the types of irradiation experiments apart from growth reduction and various physiological anomalies in growth and leaf characters, a total of 27 somatic mutants have been isolated in Chrysanthemum, Dahlia, Hibiscus, Acalypha and Iresine. Some of the mutants have been established by perpetuation over 3–5 vegetative generations while few could not be maintained on account of initially small chimeric changes or failure of regeneration of the propagable materials. However, most of the mutants hold as practical improvements and will find place in ornamental improvement programme in the country.
Evidence for an internal promoter preceding tufA in the str operon of Escherichia coli (1982)

We constructed plasmids carrying tufA from which the major promoter for the rpsL-rpsG-fus-tufA operon (also called the str operon) had been removed. These plasmids continued to express tufA, as judged by the ability to complement mocimycin resistance and by electrophoretic analysis of synthesized proteins. Tn5 transpositions into fus, the gene for elongation factor G, which lies immediately on the 5' side of tufA, failed to obstruct the expression of tufA. The subcloning of a 2,000-base-pair PstI-SmaI DNA fragment (containing the intercistronic region between tufA and fus, the distal portion of fus, and the proximal portion of tufA) next to promoterless tetracycline resistance genes (tet) yielded a plasmid that was capable of bestowing resistance to 12 microgram of tetracycline per ml. The removal of an EcoRI fragment that lies within fus destroyed the ability of the 2,000-base-pair PstI-SmaI fragment to promote the transcription of tet. These data indicate that, in addition to the operon's major promoter rpsLp, there is an internal promoter, tufAp, which can be used for the transcription of tufA, tufAp probably lies within fus, about 50 base pairs upstream from its 3' end and 120 base pairs from the start codon of tufA. The relative activities of tufB and of tufA-from-tufAp were estimated by a comparison of beta-galactosidase activities of almost identical EF-Tu-beta-galactosidase protein fusions; they were approximately equal.
Observers can voluntarily shift their psychometric functions without losing sensitivity (2011)

Psychometric sensory discrimination functions are usually modeled by cumulative Gaussian functions with just two parameters, their central tendency (μ) and their slope (1/σ). These correspond to Fechner's "constant" and "variable" errors, respectively. Fechner pointed out that even the constant error could vary over space and time and could masquerade as variable error. We wondered whether observers could deliberately introduce a constant error into their performance without loss of precision. In three-dot vernier and bisection tasks with the method of single stimuli, observers were instructed to favour one of the two responses when unsure of their answer. The slope of the resulting psychometric function was not significantly changed, despite a significant change in central tendency. Similar results were obtained when altered feedback was used to induce bias. We inferred that observers can adopt artificial response criteria without any significant increase in criterion fluctuation. These findings have implications for some studies that have measured perceptual "illusions" by shifts in the psychometric functions of sophisticated observers.