gebhart/patrepeval huggingface dataset:
Development of carbon dioxide adsorbent from rice husk char (2016)

This study was mainly concerned about the development of carbon dioxide (CO2) adsorbent from rice husk (RH). Several chemical treatments were used to produce activated rice husk char (RHAC) from RH. Initially the RH was refluxed with 3M of sodium hydroxide (NaOH) solution, activation followed by using 0.5M of zinc chloride (ZnCl2) solution and finally acidic treatment by using 0.1M of hydrochloric acid (HCl). Then, the RHAC was functionalized by using 3-chloropropylamine hydrochloride (3-CPA) and noted as RHN. RHN samples were characterized with scanning electron microscopy (SEM), mercury intrusion porosimetry (MIP), fourier transform infrared spectroscopy (FTIR). Based on the SEM, the RHN sample had a large pore diameter compared to RH sample after being treated. Based on MIP data, the average pore diameter between RH and RHAC samples were increased significantly from 0.928 microns to 1.017 microns. The RHN sample also had higher total porosity (%) compared to RHAC and RH (58.45%, 47.82% and 45.57% respectively). The total specific surface area of the sample was much increasing from RHO to RHAC (29.17 m2/g and 62.94 m2/g respectively) and slightly being decreasing from RHAC to RHN (58.88 m2/g). FTIR result showed the present of weak band at 1587 cm-1 which demonstrating of the amine group present on the sample. The CO2 capture result showed that the decreasing of operating temperature can increase the breakthrough time of CO2 capture. On the contrary decreasing of CO2 gas flow rate can increase the breakthrough time of CO2 capture. The highest total amount of CO2 adsorbed was 25338.57 mg of CO2/g of RHN sample by using 100 mL/min of gas flow rate at 30oC. Based on adsorption isotherm analysis, the Freundlich isotherm was the best isotherm to describe the CO2 adsorption on the sample.
A Broadband Double-Balanced Phase-Coherent Degenerate Parametric Amplifier (2011)

A broadband double-balanced phase-coherent degenerate parametric amplifier is presented that provides an average gain of 26 dB over 1 GHz of usable bandwidth centered at 650 MHz. A prototype board was constructed, and its measured and simulated data match well with one another. Using a harmonic-balance simulator, the stability of the amplifier was analyzed by observing the evolution of the system poles as both the pump power level and the temperature of operation varied.
The development of a strength grading system for small diameter roundwood (1998)

Roundwood as a construction material is becoming more and more interesting to users. Using this wood in construction will increase the value of the material and may open new opportunities for construction design. In order to use round wood for this application, suitable connectors andlor joints have to be developed, but before all, the strength characteristics of roundwood must be determined and grading systems should be established. This investigation deals with the determination of the modulus of elasticity and the bending strength. The wood species concerned are Larch, grown in The Netherlands, and Douglas fir, grown in France, with diameters between 80 mm and 140 mm. The modulus of elasticity is determined by static and dynamic test methods. The data were included in a multiple regression model in order to predict the bending strength. The resulting model is compared with models for sawn timber that are nowadays used in practice.
The Avian Egg: Water Vapor Conductance, Shell Thickness, and Functional Pore Area (1974)

Journal Article The Avian Egg: Water Vapor Conductance, Shell Thickness, and Functional Pore Area Get access A. Ar, A. Ar Department of Physiology School of Medicine State University of New York at Buffalo Buffalo, New York 14214 Present address: Department of Zoology, Tel-Aviv University, Tel-Aviv, Ramat-Aviv, Israel. Search for other works by this author on: Oxford Academic Google Scholar C. V. Paganelli, C. V. Paganelli Department of Physiology School of Medicine State University of New York at Buffalo Buffalo, New York 14214 Search for other works by this author on: Oxford Academic Google Scholar R. B. Reeves, R. B. Reeves Department of Physiology School of Medicine State University of New York at Buffalo Buffalo, New York 14214 Search for other works by this author on: Oxford Academic Google Scholar D. G. Greene, D. G. Greene Department of Physiology School of Medicine State University of New York at Buffalo Buffalo, New York 14214 Search for other works by this author on: Oxford Academic Google Scholar H. Rahn H. Rahn Department of Physiology School of Medicine State University of New York at Buffalo Buffalo, New York 14214 Search for other works by this author on: Oxford Academic Google Scholar The Condor, Volume 76, Issue 2, 1 April 1974, Pages 153–158, https://doi.org/10.2307/1366725 Published: 01 April 1974 Article history Accepted: 19 December 1973 Published: 01 April 1974
Radiological abnormalities in children with asthma and their relation to the clinical findings and some respiratory function tests (1973)

Criteria are put forward for the recognition and assessment of radiographic abnormalities in childhood asthma. Using these criteria, radiographs of the chest in 218 children with asthma are compared with those of 162 normal children. In 73% of the asthmatic children the radiograph appeared to be normal, 15% presented a simple overinflation pattern with long narrow lungs and a narrow vertical heart (0-1 pattern), and 12% showed the same pattern together with enlargement of the hilar vessels relative to the lung vessels (0-2 pattern). Those children with the most marked radiographic abnormalities (0-2 pattern) were, without exception, suffering from severe or moderately severe <i>constant</i> asthma. Those with <i>intermittent</i> symptoms usually had radiographs which appeared to be normal even during their asthmatic episodes.
Intraoperative Autotransfusion in Urologic Oncology (1986)

• The value of autotransfusion is widely recognized in the surgical community and may be of increasing importance in prevention of acquired immunodeficiency syndrome and hepatitis. The concern of potential contamination of the blood with viable tumor cells has resulted in limited use of autotransfusion in cancer surgery. The objective of this study was to examine the benefits and safety of autotransfusion in patients undergoing major surgery of genitourinary tumors. Autotransfusion was used in 49 consecutive patients. Twenty-four patients had radical cystectomy, ten had radical prostatectomy, 13 had radical nephrectomy, and two had other types of operations. An autotransfusion machine (Haemonetics Cell Saver) was used. The follow-up included physical examination, chest roentgenogram every three months, and bone scan and computed tomographic scan if clinically indicated. Liver and renal profiles were routinely performed every three months. Five of 49 patients developed metastases during follow-up examination from 12 to 23 months. The low incidence of metastatic spread and the pattern of spread fail to implicate autotransfusion as a cause of tumor dissemination. Autotransfusion and predeposited blood banking may result in elimination of or significant reduction in homologous transfusions. (<i>Arch Surg</i>1986;121:1326-1329)
The Precession Method in X-ray Crystallography (1965)

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 Martin J. Buerger, M. R. Taylor; The Precession Method in X-ray Crystallography. Am. J. Phys. 1 July 1965; 33 (7): 595. https://doi.org/10.1119/1.1971993 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 ContentAmerican Association of Physics TeachersAmerican Journal of Physics Search Advanced Search |Citation Search
Band-gap narrowing and high-frequency characteristics of Si/Ge/sub x/Si/sub 1-x/ heterojunction bipolar transistors formed by Ge ion implantation in Si (1998)

Si/Ge/sub x/Si/sub 1-x/ heterojunction n-p-n bipolar transistors (HBT's) with a double-polysilicon self-aligned structure were fabricated by using high dose Ge implantation for the formation of the Si/Ge/sub x/Si/sub 1-x/ heterostructure and As and BF/sub 2/ implantation for emitter and base doping. DC and high frequency electrical characteristics are investigated for Ge concentrations up to 7 at.% and for base widths down to 35 nm. Improvements in electrical characteristics compared to reference Si transistors are demonstrated. Experimental data indicating that these improvements are related to an effective band gap engineering are shown and discussed.
Wrestling with government (1967)

Abstract Individuals can hardly determine the way large appropriations of federal money are spent in projects such as the War on Poverty, but individuals can influence the legislators who are responsible for passing legislation in the first place. Here are some suggestions for action.
Risk and pricing in CDM / JI market, and implications on Bank pricing guidelines for emission reductions (2005)

This note reviews the Bank pricing guidelines for Emission Reductions, by explaining some key elements of risk in projects eligible under the Clean Development Mechanism (CDM) and Joint Implementation (JI), and who bears them. It is based on market conditions at the time of writing, and is subject to change. As a background, it should be noted that carbon finance is an inherently risky business - first, because of the emergent nature of the Greenhouse Gas (GHG) market, and second, because projects that generate the Emission Reductions (ERs) are located in emerging markets, with fiscal and political regimes that are often unpredictable. The price of ERs is directly related to the degree of risk in CDM/JI projects and who bears them. The inclusion of a project into the Carbon Fund pipeline is based on its alignment with the Bank's strategic goals, and not on whether there are competing price offers for the project. Strategic objectives include: i) developing carbon assets in technologies or countries that have yet to benefit from carbon finance; ii) developing carbon assets in sectors, using a programmatic approach, or in activities of large scale where Bank intermediation is key to opening the market, or bringing the project to the market; and, iii) promoting synergies between carbon finance, sustainable development, and poverty alleviation.
Issues in the Implementation of General Dual-Rate Systems (2009)

General dual-rate systems enhance the design freedom by removing the structural dependencies and hence can be used in the incompatible nonuniform filter banks. Recently it was shown that realising these dual-rate systems using a simple linear time invariant (LTI) system, a conventional sampler and a block sampler, can reduce the circuit layout complexity. The dual-rate system specifications are obtained in the Multi Input Multi Output (MIMO) representation, in the design of the filter bank. This paper address the issue of designing the LTI system for the simple realisations from the MIMO specifications. We obtain the relationship between the polyphase decomposition of the LTI system and the transfer matrix of the MIMO representation. Our analysis show that the simple realisations are obtained from generalising the switching representations of linear periodically time varying (LPTV) systems.
The Effects of Common Genetic Variants in Oncogenes on Ovarian Cancer Survival (2008)

Common genetic variants in the BRAF and KRAS oncogenes may be important in the prediction of survival in patients with invasive epithelial ovarian cancer.
Analysis of the tandem repeat locus D4Z4 associated with facioscapulohumeral muscular dystropothhy (1994)

The sequence of the tandem repeat sequence (D4Z4) associated with facioscapulohumeral muscular dystrophy (FSHD) has been determined: each copy of the 3.3 kb repeat contains two homeoboxes and two previously described repetitive sequences, LSau and a GC-rich low copy repeat designated hhspm3. By Southern blotting, FISH and isolation of cDNA and genomic clones we show that there are repeat sequences similar to D4Z4 at other locations in the human genome. Southern blot analysis of primate genomic DNA indicates that the copy number of D4Z4-like repeats has increased markedly within the last 25 million years. Two cDNA clones were isolated and found to contain stop codons and frameshifts within the homeodomains. An STS was produced to the cDNAs and analysis of a somatic cell hybrid panel suggests they map to chromosome 14. No cDNA clones mapping to the chromosome 4q35 D4Z4 repeats have been identified, although the possibility that they encode a protein cannot be ruled out. Although D4Z4 may not encode a protein, there is an association between deletions within this locus and FSHD. The D4Z4 repeats contain LSau repeats and are adjacent to 68 bp Sau3A repeats. Both of these sequences are associated with heterochromatic regions of DNA, regions known to be involved in the phenomenon of position effect variegation. We postulate that deletion of D4Z4 sequences could produce a position effect.
Lithography-Based Nanoelectrochemistry (2011)

Lithographically fabricated nanostructures appear in an increasingly wide range of scientific fields, and electroanalytical chemistry is no exception. This article introduces lithography methods and provides an overview of the new capabilities and electrochemical phenomena that can emerge in nanostructures.
A bio-physically inspired silicon neuron (2005)

The physical principles governing ion flow in biological neurons share interesting similarities to electron flow through the channels of MOSFET transistors. Here, is described a circuit which exploits the similarities better than previous approaches to build an elegant circuit with electrical properties similar to real biological neurons. A two-channel model is discussed including sodium (Na/sup +/) and potassium (K/sup +/). The Na/sup +/ channel uses four transistors and two capacitors. The K/sup +/ channel uses two transistors and one capacitor. One more capacitor simulates the neuron membrane capacitance yielding a total circuit of four capacitors and six transistors. This circuit operates in real-time, is fabricated on standard CMOS processes, runs in subthreshold, and has a power supply similar to that of real biology. Voltage and current responses of this circuit correspond well with biology in terms of shape, magnitude, and time.
Intracellular Release of 17-β Estradiol from Cationic Polyamidoamine Dendrimer Surface-Modified Poly (Lactic-co-Glycolic Acid) Microparticles Improves Osteogenic Differentiation of Human Mesenchymal Stromal Cells (2010)

Human bone marrow mesenchymal stromal cells (MSCs) are considered a potential cell source for MSC-based bone regeneration, but improvements in the proliferation and differentiation capacity of MSCs are necessary for practical applications. Estrogen effectively improves MSC capabilities and has strong potential as a regulator of MSCs. The aim of this study was to develop a delivery system that provides intracellular release of estrogen and test its ability to improve osteogenic differentiation of MSCs. Biodegradable poly (lactic-co-glycolic acid) (PLGA) microparticles were developed that entrap 17-β estradiol (E2) and provide intracellular release of E2. The results show that we can prepare PLGA particles with efficient loading of E2 and maintain release of E2 up to 7 days. Surface modifying E2-loaded PLGA particles with cationic polyamidoamine dendrimers enabled increased uptake by human MSCs. Human MSC uptake of the E2-loaded PLGA particles significantly upregulates osteogenic differentiation markers of alkaline phosphatase and osteocalcin. In conclusion, cationic-modified PLGA particles can serve as a tool for intracellular delivery of estrogen to effectively execute estrogen regulation of MSCs. This approach has the potential to improve the osteogenic capabilities of MSCs and to develop appropriate environments of implantation for MSC-based bone tissue engineering.
Targeting Cancer Stem Cells: A Strategy for Effective Eradication of Cancer (2019)

Cancer stem cells (CSCs) are subpopulations of tumor cells with the ability to self-renew, differentiate, and initiate and maintain tumor growth, and they are considered to be the main drivers of intra- and inter-tumoral heterogeneity. While conventional chemotherapy can eradicate the majority of non-CSC tumor cells, CSCs are often drug-resistant, leading to tumor recurrence and metastasis. The heterogeneity of CSCs is the main challenge in developing CSC-targeting therapy; therefore, we and other investigators have focused on developing novel therapeutic strategies that combine conventional chemotherapy with inhibitors of CSC-regulating pathways. Encouraging preclinical findings have suggested that CSC pathway blockade can indeed enhance cellular sensitivity to non-targeted conventional therapy, and this work has led to several ongoing clinical trials of CSC pathway inhibitors. Our studies in bladder cancer and lung adenocarcinoma have demonstrated a crucial role of YAP1, a transcriptional regulator of genes that promote cell survival and proliferation, in regulating CSC phenotypes. Moreover, using cell lines and patient-derived xenograft models, we showed that inhibition of YAP1 enhances the efficacy of conventional therapies by attenuating CSC stemness features. In this review, we summarize the therapeutic strategies for targeting CSCs in several cancers and discuss the potential and challenges of the approach.
Immobilized biomolecules on plasma functionalized cellophane. I. Covalently attached α-chymotrypsin (2000)

Surface morphology changes of hydrazine-RF-plasma-exposed cellophane surfaces were monitored under 40 kHz and 13.56 MHz CW and pulsed discharge environments and the immobilization of alpha-chymotrypsin onto plasma-modified substrates was studied. It has been shown, using SEM and AFM techniques, that significantly different cellophane topographies are generated under different frequency and pulsing parameter conditions. ESCA and ATR-FTIR analyses of plasma-modified surfaces indicated the presence of primary amide and primary amine functionalities. It was found that the relative ratios of crystalline vs amorphous zones of the nascent surface layers can also be controlled by properly selected plasma parameters, including the duty cycles of pulsed plasma environments. Enzyme immobilization reactions with alpha-chymotrypsin were accomplished both from oxygen-plasma-generated carbonyl and hydrazine-plasma-created primary amine functionalities by anchoring the biomolecules either directly to the cellophane surface or by involving spacer molecules. It was found with the cellulose substrates that fairly good enzyme activity was retained without the necessity of intercalated spacer chains. It appears that the ability of the cellulose substrate to swell in the aqueous environment allows sufficient freedom of mobility for the immobilized enzyme to retain a significant part of its activity on the cellulose. However, the activities both of the free enzyme in the presence of cellophane, and that of the immobilized enzyme molecules are significantly diminished in comparison to the activity of the free enzyme, as a result of the incorporation of these molecules into the swollen network. Potential applications of immobilized enzymes from cold-plasma-functionalized surfaces are discussed.
Tire model for simulations of vehicle motion on high and low friction road surfaces (2000)

An on-road analytical tire model has been developed to predict tire forces and moments at the tire/road interface. The model is computationally efficient and it only requires a limited set of easily obtained input parameters. Force and moment calculations are based on mechanical analogs that describe longitudinal and lateral tire tread and sidewall deflections during braking, traction and cornering. Longitudinal deflections are determined using a simple linear elastic spring model, while lateral deflections are calculated using an elastic beam model. Surface sliding friction is defined by experimental curves relating the friction coefficient to the wheel/road differential velocity. Source code has been developed to include the model as a force element subroutine in commercially available dynamic analysis software known as DADS (Dynamic Analysis Design System). The tire model has been successfully demonstrated in DADS using a simple simulation of a tire test device. Preliminary comparisons of model predictions with available test data have been favorable. Efforts are underway to incorporate the tire subroutine into a DADS model of a HMMWV to conduct driving simulations on dry, snow and ice covered road surfaces.
Ontology Matching Approach to the Harmonization of CIM and IEC 61850 Standards (2010)

The harmonization of CIM (IEC 61968/61970) and IEC 61850 standards is a major issue in the interoperability between smart grid devices, systems and applications. This paper describes how Ontology Matching methods, mainly developed for the Semantic Web, can be employed to solve the problems or mismatches that appear in this harmonization. The paper also includes a description of the ESODAT software tool, which processes OWL alignments to translate configuration files from one of the standards (CIM or IEC 61850) to the other one. The tests carried out with this tool proved its ability to solve mismatches that appear in the state of the art. Besides, the solution proposed in this work is based on open source resources and does not require any modification of the original standards.
Pixel-wise Deep Learning for Contour Detection (2015)

We address the problem of contour detection via per-pixel classifications of edge point. To facilitate the process, the proposed approach leverages with DenseNet, an efficient implementation of multiscale convolutional neural networks (CNNs), to extract an informative feature vector for each pixel and uses an SVM classifier to accomplish contour detection. In the experiment of contour detection, we look into the effectiveness of combining per-pixel features from different CNN layers and verify their performance on BSDS500.
On the feasibility of miniaturized enantiomeric separation by liquid chromatography (OTLC) and open tubular electrochromatography (OTEC) (1997)

The feasibility of miniaturized enantiomer separation by open tubular liquid chromatography (OTLC) as well as by open tubular electrochromatography (OTEC) in 50 μm i.d. and 25 μm i.d. fused silica capillaries coated with CHIRASIL-DEX, a covalently linked permethyl-β-cyclodextrin to polysiloxane, is demonstrated for a number of chiral pharmaceuticals and chiral alcohols. A comparison of OTLC and OTEC is made. The influence of several organic modifiers and the role of temperature for the enantiomer separation in OTLC and OTEC has been studied. The direct coupling of the OTLC system to an electrospray ionisation mass spectrometer (ESI-MS) without any interfacing is demonstrated. A new example of an unified enantioselective chromatographic approach is presented. © 1997 John Wiley & Sons, Inc. J Micro Sep 9: 421–431, 1997