Miracle-dz/UniFAR-FTUs huggingface dataset:
A Histopathological and Immunohistochemical Study on the Effects of the Resin Fragments of the Abutment Construction in the Periodontal Tissues in Healthy (m+/m+) and Diabetic Model Mice (db/db)

The materials of high molecular compounds have been widely used in the field of dental clinics. Although preparation of the tooth abutment and contamination of the metal fragments are known to cause the discoloration and injury in the periodontal tissues in the field of crown and bridge prosthodontic clinics, the changes by the precipitation of composite resin fragments have not been fully clarified, yet. In addition, diabetes mellitus has recently been increased because of an advanced age, life style and conditions, and also, the patients with diabetes have increased in dental clinics. Therefore, the present study was undertaken the histopathological, histochemical and immunohistochemical analyses, in order to elucidate the changes of the periodontal tissues by injecting the composite resin fragments. The histopathological reactions of the periodontal tissues in both healthy (m+/m+) and diabetic (db/db) mice were also compared. Histopathologically, neutrophil infiltration was remarkably observed around the fragments of the composite resin at 3 days after the injection, and then, the formation of the granulation tissues with appearance of macrophages (foamy cells) at 7 and 14 days in m+/m+. Multinuclear giant cells were also observed at 14 days in m+/m+. In db/db, neutrophil infiltration was not so remarkable at 3 days, and relatively increase of the infiltration was observed at 7 days, and formation of the granulation tissues with appearance of the foamy cells at 14 days. The numbers of the mast cells, indicated metachromasia with toluidine blue pH 2.5 staining, peaked at 3 days and then decreased at 7 and 14 days in m+/m+, whereas the peak of the mast cells was at 7 days in db/db. Immunohistochemically, the peak cell rate of CD68-positive macrophage was found at 3 days after the injection, and the rate decreased at 7 and 14 days in m+/m+, whereas the rate gradually increased and showed the peak at 14 days after the injection in db/db. The peak of the cell rate of matrix metalloproteinase-2-positive macrophage was observed at 3 days, and the rates tended to gradually decrease at 7 and 14 days after the injection in m+/m+, whereas lower cell rate without peak point was recognized at each day in db/db. These results suggested that db/db showed delay of the process of biological reactions for the foreign bodies of the composite resin fragments compared to m+/m+. Furthermore, the delay of the reaction depended on the inhibition for the fibrosis accelerated by macrophages and mast cells.
Photoluminescence investigation of InGaAs‐InP quantum wells

The properties of InGaAs‐InP single quantum wells have been studied by using the photoluminescence technique. Samples were grown by atmospheric pressure metalorganic vapor phase epitaxy. The photoluminescence of nominally undoped quantum wells is studied as a function of temperature and excitation power. The role of an excitonic process in 4‐K radiative recombinations is pointed out. The best linewidth obtained for a 140‐A well is 4.5 meV, fairly close to the limit imposed by alloy fluctuations in the InGaAs thick layers. Radiative recombination is more and more efficient with decreasing well thickness and higher than in InGaAs bulk material.
Polyimide Film Properties and Selective LPCVD of Tungsten on Polyimide

Les couches de polyimide du Pont PI-2575-D sont caracterisees pour determiner leur convenance comme dielectrique isolant deux niveaux avec remplissage des trous d'interconnexion d'un niveau a l'autre par le tungstene. Apres etuvage des couches de polyimide a 400°C-440°C, la tension de disruption devient superieure a 10 6 V/cm. La densite des piqures pour un traitement hors salle blanche est inferieure a 1/cm 2 . La constante dielectrique de couches de 1,6 μm est 3,9. L'adherence sur un oxyde thermique dans l'eau bouillante pendant 1 h est 100%. L'absorption d'humidite maximale a 90% d'humidite relative est 1,7 en poids. Une parfaite selectivite du tungstene est observee a 216°C, sous la pression totale 0,75-7,5 torr, dans 15:1 H 2 :WF 6 pendant 210 min, en l'absence de surfaces de tungstene dans le voisinage. Sinon, le tungstene se depose sur le polyimide, formant un front de metal mobile. L'energie d'activation du deplacement est 16 kcal/mole
Ownership Concentration and Earnings Management Practice of Nigerian Listed Conglomerates

This study examines ownership concentration and earnings management practice of the Nigerian listed conglomerates. It proxied earnings management using the modified Jones (Dechow et’al, 1995) model. Using 30 firm-year panelled observations, we estimated panel OLS and controlled for fixed/random effects. The result shows a significant negative relationship between ownership concentration and earnings management. The Hausman specification test shows that the panel result after controlling for random, best suits the population as the fixed effect hypothesis was rejected by the Wald/Ch 2 test. Of the control variables, only returns on assets is significant. Leverage and firm size were not significant. We hence concludes that ownership concentration indeed moderates the practice of earnings management in Nigerian listed conglomerates. Further studies may be carried out to include earnings management with real cash-flow consequences.
Solutions of Lube Base Oil Not Meeting Acid Value Requirement

Two solutions of producing HVI400SN lube base oil meeting acid number requirement were determined. One solution was that optimum operation conditions were found by optimization solution of single-stage extraction experiment data (i.e., the solvent/oil ratio was 5, the top and bottom temperatures of extractor were 120°C and 80°C, respectively). Another solution was that at least four theoretical plates were required after transformation of the existing furfural extractor, and verification results of pilot test showed viscosity index of refined oil was 106 and acid number was 0.0174 mg (KOH)/g under current operation conditions of industrial extractor.
Evaluation of the multivariate selectivity of multi‐way liquid chromatography methods

Multivariate figures of merit are used to characterize the sensitivity, selectivity, and precision of multi‐dimensional liquid chromatography (LC) methods. Specifically in this work, we used a multivariate selectivity parameter to characterize the performance of orthogonal LC and two‐dimensional liquid chromatography (2D‐LC) methods with and without diode array detection (DAD), and to aid in the optimization of these new separation approaches. We found that the average selectivity of 47 drug compounds was increased by as much as 58% upon the addition of a second, orthogonal separation. We also found that the selectivity for some individual drug compounds improved by more than a factor of two when DAD detection was used compared to single wavelength detection. In the comprehensive 2D‐LC simulations, using a multi‐channel detector increased the average selectivity of 500 components by 7.3% for a 21 s cycle time. The multivariate selectivity parameter was shown to be useful for determining the information gained when additional dimensions of data are collected on multi‐dimensional instrumentation. Copyright © 2007 John Wiley & Sons, Ltd.
Iteratively reweighted ℓ1-penalized robust regression

This paper investigates tradeoffs among optimization errors, statistical rates of convergence and the effect of heavy-tailed errors for high-dimensional robust regression with nonconvex regularization. When the additive errors in linear models have only bounded second moments, we show that iteratively reweighted 1-penalized adaptive Huber regression estimator satisfies exponential deviation bounds and oracle properties, including the oracle convergence rate and variable selection consistency, under a weak beta-min condition. Computationally, we need as many as O(log s + log log d) iterations to reach such an oracle estimator, where s and d denote the sparsity and ambient dimension, respectively. Extension to a general class of robust loss functions is also considered. Numerical studies lend strong support to our methodology and theory. MSC2020 subject classifications: Primary 62A01; secondary 62J07.
Maximizing the production of acetone—butanol in an alginate bead fluidized bed reactor using clostridium acetobutylicum

Low volumetric solvent productivities are one of the characteristics of an acetone-butanol fermentation by C. acetobutylicum. A calcium alginate immobilized continuous culture was used in a novel gas-sparged reactor to strip the solvents from the aqueous phase and reduce their toxicity. A dilution rate of 0.07 h−1 was found to give maximum solvent productivity at 0.58 g dm−3 h−1, although at 0.12 h−1 the productivity was slightly lower. In order to increase glucose uptake by the culture, feed glucose concentrations were increased over time to attempt to acclimatize the culture. This resulted in a productivity as high as 0.72 g dm−3 h−1 although this production rate was found to be unstable.
Analysis of carbonaceous materials in Southern California atmospheric aerosols

A technique is described for estimating the contributions of elemental carbon and primary organic and secondary organic materials to atmospheric particulate matter collected in California's South Coast Air Basin. The technique employs a combination of solvent extractions and carbon determinations; primary organics are estimated from the carbon solubilized in cyclohexane and secondary organics by the carbon solubilized by successive extraction with benzene and methanol--chloroform minus the primary organics. At the same time an upper limit estimate of the elemental carbon is obtained from the carbon remaining insoluble after the two-step extraction. Support for this technique is provided for samples collected at four locations.
Interaction between epoxidised estradiol and fullerene (C60): possible anticancer activity

In this article, the antioxidant activity of fullerene is theoretically studied by applying the density functional theory (DFT) method in terms of its protective effects against the derivatives of estrone that constitute species known to exhibit carcinogenic activity. Several reactions involving fullerene C60 in different possible reactive centres of estradiol and epoxidised estradiol were studied. Surprisingly, the ring that supports the epoxide group is able to react with fullerene by means of a 2+2 cycloaddition, forming a very stable compound. This new compound has the potential to avoid known reactions between the epoxidised molecule and DNA fragments causing the mutagenic process of breast cancer. Therefore, fullerene C60 represents the possibility of a new agent for combating this disease.
TMUDS at the NTCIR-15 DialEval-1 Task

In this paper, we present our approaches to the Nugget Detection (ND) subtask at the NTCIR-15 STC-3 task. The purpose of this subtask is to automatically identify the state of dialogue sentences in logs of a dialogue system. The proposed model integrates BERT Embeddings and BiLSTM through a concatenated attentionmechanism. The results demonstrate that BERT Embeddings are effective in capturing the semantic relationship between pieces of the dialogue in the context. Therefore, our models are capable of surpassing two baseline models (i.e., BL-uniform and BL-popularity). In addition, according to our final evaluation results, the attention mechanism plays a crucial role in model optimization.
Comparison of Dielectric and Viscoelastic Relaxation Functions of cis-Polyisoprenes: Test of Tube Dilation Molecular Picture

Within the context of the generalized tube model, the tube representing the entanglement constraint is not necessarily fixed in space but moves with time. This tube motion results in constraint release (CR) as well as dynamic tube dilation (DTD) for the chain trapped in the tube. For monodisperse systems, the DTD molecular picture leads to the normalized relaxation modulus μ(t) (=G(t)/GN) being proportional to square of the surviving fraction of the dilated tube. In contrast, the normalized dielectric relaxation function Φ(t) of the chain having noninverted type-A dipoles is proportional to this fraction. Thus, the viscoelastic and dielectric relaxation functions satisfy a relationship μ(t) = [Φ(t)]2 if the tube dilates in time scales of the chain relaxation. The validity of this relationship was examined for linear cis-polyisoprene (PI) chains having those type-A dipoles. The relationship was approximately valid, and thus, the tube dilated for the PI chains with M/Me = 10−30 in their bulk state, although.
Ambient carboxylation on a supported reversible CO2 carrier: ketone to β-keto ester

A reversible CO2 carrier (RCC) has been developed to perform carboxylation of ketone to β-ketoester under ambient CO2 pressure and temperature. RCC has been synthesized by immobilizing 1,8-diazabicyclo[5.4. 0]undec-7-ene (DBU) on methylhydrosiloxane support and reacting with CO2 with 100% degree of functionalisation. RCC is found to be recyclable and shows retention of activity in 5 recycles. CO2 absorption under ambient temperature and desorption at 120 °C renders the material suitable for carrying out carboxylation reactions at 25 °C with excellent yields. The yield of the reaction can reach up to 100% with TON 200 in 4 h. The extent of the reaction primarily depends upon enol content of the substrate. β-Ketoacid produced during the reaction can be isolated and converted to its corresponding methyl ester derivative by reacting with methyl iodide.
Chemical Polymerization of Acrylamide Initiated with Ce(IV)-Dicarboxylic Acid Redox System: Effect of Chain Length Between the Carboxyl Groups

Aqueous polymerization of acrylamide (AAm) was carried out with the Ce(IV)-dicarboxylic acid initiator system. Dicarboxylic acids with numbers of methylene groups ranging from 1 to 7 were used to elucidate the effect of chain length between the carboxyl groups on the formation of polymer, which is reflected in yield and molecular weight of polymer. The end group analysis of polyacrylamides was carried out by using conductometric titration. The number average molecular weight results from end group analysis are compared with values from viscometric analysis.
In Situ Observation of 2-Dimensional Clustering during Electrophoretic Deposition

Electrophoretic deposition of micron-sized polystyrene latex particles on an indium tin oxide (ITO) electrode was studied in situ using optical microscopy. Strong 2-dimensional clustering of the particles on the electrode surface was observed upon application of a potential. The clustering decreases somewhat with increasing salt concentration. Upon reversal of the direction of the field, the clusters broke up. The aggregation on the electrode cannot be explained by DLVO or dipole interactions. A possible interpretation may be formulated in terms of electro-osmotic flow.
ON JACKKNIFE VARIANCE ESTIMATOR FOR KERNEL DENSITY ESTIMATOR AND ITS APPLICATION

For a kernel estimator of a density function, we obtain an asymptotic representation of a jackknife variance estimator of the kernel density estimator and prove its consistency. Assuming a bandwidth hn = cn − 1 4 (c > 0), we also discuss an Edgeworth expansion with residual term o(n−1/2) and its validity. Many papers have studied theoretical properties of a kernel density estimator. Especially mean integrated squared errors are precisely studied. The asymptotic distribution of the estimator is also discussed, and it is easy to show asymptotic normality. In this paper, we will discuss higher order approximation of the distribution of the kernel estimator. We will obtain an Edgeworth expansion, which takes an explicit form with residual term o(n−1/2).
The detection of pesticides in water using ZnCdSe quantum dot films

This paper reports an attempt to develop a sensor system for detecting pesticides based on the effect of an analyte on the photoluminescence (PL) intensity of ZnCdSe quantum dot (QD) films. The ZnCdSe QDs were synthesized using a wet-chemical process. The sensor system comprises an excitation light source made of a laser diode, a dual arm fibre optic probe, a spectrometer and a sensor chamber. The QD films were deposited by dropping QD solution onto the probe surface and drying them at ambient temperature. The pesticides used in this study were Dipel, Siven 85% WP and Water-Dispersible Granules WG insecticides. The detection of pesticides was done by comparing the photoluminescence (PL) spectra of the films dipped in the deionized water and in pesticide solutions by varying the concentration of the pesticide solutions from 2.5 to 2500 μg l −1. It was observed that the PL intensity of the films was quenched by the presence of the pesticide molecules. The quenching degree increased with the concentration of the pesticide solutions. There is a linear relationship between the pesticide solution concentrations and the QD film sensor sensitivities. The sensitivity of the sensor system depended on the type of pesticides successively from the highest to lowest sensitivity in the order Siven 85% WP, Dipel and Water-Dispersible Granules WG. The QD films could be used as fluorescence sensors to detect water that is contaminated by pesticides.
Development of Quantitative Analysis of Fatty Acid for Monitoring Changes of Fatty Acid Profile of Camellia Oil

To analyze the formation of fatty acid (FA) and trans fatty acids (TFAs) in camellia oil, the method of quantitative analysis of FA was investigated by gas chromatography (GC). 15 kinds of fatty acids methyl esters (FAMEs) standards have been referred; the database used for external and internal standard analysis method was established. The correlation coefficient (r2) of all the linear regression equations both external and internal standard curves were more than 0.99, the recovery of all FAMEs standards from 92.01% to 106.7%, the coefficient of variation (CV) of the intra-day from 2.966% to 6.302%. Five FA, i.e. C16:0, C18:0, C18:1-9c, C18:2-9c12c, C18:3-9c12c15c, have been discovered in raw camellia oil. The content was 8.732, 2.168, 81.44, 8.925 and 0.7299 g/100g, respectively. Six kinds of FA have been formatted, i.e. C16:0, C18:0, C18:1-9t, C18:1-9c, C18:2-9c12c, C18:3-9c12c15c in heated camellia oil (270oC, 1 h) with the content of 8.341, 2.101, 1.931, 71.72, 4.636, 0.4680 g/100g, respectively. These values suggested that an extensive change has been occurred in the formation of FA of camellia oil after heated.
An effective method of increasing production rate of onion-like fullerenes

Onion-like fullerenes (OLFs) were synthesized by arc discharge in benzene using graphite as electrode and ferrocene as catalyst. The effect of ferrocene on the morphologies and structures of the OLFs was investigated by HRTEM and XRD. Results show that ferrocene directly influenced the morphology and yield of OLFs: The degree of graphitization is better. The diameters of the OLFs can be controlled in the range between 10 and 30 nm The method described here suggests a novel and promising route to synthesize OLFs in large scales.
Surface Modification of Polyimide Membranes by Diamines for H2 and CO2 Separation

The separation of H 2 /CO 2 is technologically important to produce the next generation fuel source, hydrogen, from syrtfaesisi gas. However, the separation efficiency achieved by polymeric inembranes is usually very low because of both unfavourable iBfrosivity selectivity and solubility selectivity between H 2 and CO 2 . A series of novel dianano-modified polyimides has been discovered to enhance the separation capability of poiyimide membranes especially for H 2 and CO 2 separation. Berth pure gas and mixed gas- tests have been conducted. The ideal H 2 /CO 2 selectivity in pure gas tests is 101, which is far superior to other polymeric membranes and is well above the Robeson 's upper-bound curve. Mixed gas tests show an ideal selectivity of 42 for the propane-1,3-diamine-inodified polyinude. The lower selectivity is a result of the sorption competitiQft-between H 2 and the highly condensable CO 2 molecules. However, both pure gas and mixed gas date are better than other polymeric mmbranes and above the Rofeson's upper-bound curve. It is evident that the proposed modification methods can alter the physicochemical structuieotgolyinude membranes with superior separation peifonnaace for H; and CO 2 separation.
Use of Ethoxy-Homologs as Internal Standards for Determination of Urinary Vanillylmandelic Acid and Normetanephrine in Man by High Performance Liquid Chromatography

Abstract Synthesis of the ethoxy-homologs of vanillylmandelic acid (3-ethoxy-4-hydroxymandelic acid, EMA) and normetanephrine (3-ethoxy-4-hydroxyphenylethanolamine, EHPEA) and their use in minor modifications of existing assays on human urine are described. For analysis of vanillylmandelic acid, the homologous internal standard is added to an aliquot of urine, organic acids are then extracted into ethyl acetate and back extracted into 10% K2CO3, and finally extracted a second time into ethyl acetate. After evaporation of the ethyl acetate, the residue is redissolved in the mobile phase to be used in the chromatography, and injected onto a reverse phase column. Comparison of results with a gas chromatography-mass spectrometry (GCMS) assay gave almost identical results (96% ± 2%, mean ± SE, n=10). Analysis of normetanephrine is performed by addition of internal standard to an aliquot of urine before heat hydrolysis of amine conjugates. The amines are adsorbed onto columns of Bio Rex 70, and then eluted with.
MULCh: modules for the analysis of small-angle neutron contrast variation data from biomolecular assemblies

Small-angle neutron scattering with contrast variation can fill important gaps in our understanding of biomolecular assemblies, providing constraints that can aid in the construction of molecular models and in subsequent model refinements. This paper describes the implementation of simple tools for analysing neutron contrast variation data, accessible via a user-friendly web-based interface (http://www.mmb.usyd.edu.au/NCVWeb/). There are three modules accessible from the website to analyse neutron contrast variation data from bimolecular complexes. The first module, Contrast, computes neutron contrasts of each component of the complex required by the other two modules; the second module, Rg, analyses the contrast dependence of the radii of gyration to yield information relating to the size and disposition of each component in the complex; and the third, Compost, decomposes the contrast variation series into composite scattering functions, which contain information regarding the shape of each component of the complex, and their orientation with respect to each other.
Influence of phosphorus on the tolerance of table pea to chloride and sulfate salinity in a sandy soil

Abstract In a greenhouse study, table pea (Pisum sativum L.) was grown from sowing to maturity in Cl‐‐dominated (Cl‐ : SC2‐ 4 = 7:3) and SO2‐ 4‐dominated (Cl‐ : SO2‐ 4 =3:7) saline sandy soil (Typic Torripsamments) at comparable electrical conductivities (ECe 4, 6, and 8 dS m‐1). Each salinity treatment, including the nonsaline control, contained four levels of added P (0, 20, 40, and 80 mg P kg‐1 soil). In P control (Olsen's P 3.5 mg kg‐1), grain yields at ECe 4, 6, and 8 dS m‐1 were 58, 17, and 7% in Cl‐‐dominated salinity and 91, 48, and 37%, respectively, in SO2‐ 4‐dominated salinity. At 20 mg P kg‐1 level (Olsen's P 13 mg kg‐1), grain yields for the respective ECe values were 108, 49, and 13 % in Cl‐‐dominated salinity and 138, 106, and 75% in SO2‐ 4‐dominated salinity, whereas at 80 mg P kg‐1 level (Olsen's P 46 mg kg‐1) yields were 140, 80, and 17% in Cl‐‐dominated salinity and 100, 108, and 128% in SO2‐ 4‐dominated salinity relative to the nonsaline soil. The P requirement at ECe 6 dS m‐1 was twic.