Miracle-dz/UniFAR-FTUs huggingface dataset:
Dispersion (co)polymerization of styrene in polymeric media to prepare polymer micro blends

In general, different polymers are not compatible with each other so that their mixture usually segregates to result in macroscopic phase separation. In order to achieve microscopic polymer blending, dispersion polymerization in a polymeric medium appears an interesting approach. We have attempted styrene polymerization in poly(ethylene glycol) (PEG) and in poly(dimethylsiloxane) (PDMS) with the corresponding macromonomers as reactive (copolymerizable) dispersants. Fine, monodispersed polystyrene microspheres have been prepared in the polymeric media with relatively low molecular weights, but not in those with high molecular weights due to extensive particle aggregation. So, monodisperse polystyrene latex (Dn = 0.70 μm), prepared by dispersion copolymerization in PDMS-diol (MW = 7,500) with a PDMS macromonomer, was allowed together with trimethylolpropane to react with hexamethylene diisocyanate using dibutyltin dilaurate as a catalyst. The final product after the polyaddition was a tough elastomeric composite with polystyrene particles finely dispersed and strongly anchored in PDMS-polyurethane matrix, as judged from SEM, DSC, and TGA measurements.
Das magnetische Verhalten Mangan-dotierter Zinncluster - Der Einfluss von Topologie und Temperatur auf das Ablenkverhalten atomarer Cluster inStern-Gerlach-Experimenten

Die magnetischen Eigenschaften isolierter Mangan-dotierter Zinncluster werden in Molekularstrahl-Experimenten untersucht. Der Einfluss von Topologie und Dynamik der Cluster auf das Verhalten im inhomogenen Magnetfeld wird analysiert. Dabei erweisen sich vor allem angeregte molekulare Vibrationen der Cluster als bedeutend. Zur Aufklarung der Clusterstrukturen werden die dielektrischen Eigenschaften der Cluster untersucht und mit dem fur bestimmte Isomere erwarteten Verhalten verglichen. Durch quantenchemische Rechnungen (Dichtefunktionaltheorie) werden die Grundzustandsisomere, der Spinzustand des elektronischen Grundzustands, das elektrische Dipolmoment und die elektronische Polarisierbarkeit sowie die Schwingungsspektren der Cluster ermittelt. Temperaturabhangige Messungen zeigen, dass das magnetische Ablenkverhalten der Cluster im Vibrationsgrundzustand empfindlich von der Clustergeometrie abhangt. Der Anteil vibrationsangerechter Cluster wiederrum wird einheitlich in Richtung des Feldgradienten abgelenkt.
Photocatalytic Degradation of Eosin Yellow Using Poly(pyrrole-co-aniline)-Coated TiO2/Nanocellulose Composite under Solar Light Irradiation

The present study describes the feasibility of a novel adsorbent cum photocatalyst, poly(pyrrole-co-aniline)-coated TiO2/nanocellulose composite (P(Py-co-An)-TiO2/NCC), to remove eosin yellow (EY) from aqueous solutions. The removal of EY was investigated by batch adsorption followed by photocatalysis. The effect of various adsorption parameters like adsorbent dose, pH, contact time, initial concentration, and ionic strength has been optimized for treating effluents from the dye industry. Adsorption of EY reached maximum at pH 4.5 and complete removal of dye was achieved using 3.5 g/L of P(Py-co-An)-TiO2/NCC. Adsorption equilibrium data were fitted with Langmuir and Fritz-Schlunder isotherm models and the kinetics of adsorption follows a second-order mechanism. The adsorption capacity of P(Py-co-An)-TiO2/NCC was found to be 3.39 × 10−5 mol/g and reached equilibrium within 90 min. The photocatalytic degradation of adsorbed dye under sunlight was possible and about 92.3% of dye was degraded within 90 min. The reusability of P(Py-co-An)-TiO2/NCC was also investigated. The results indicate that P(Py-co-An)-TiO2/NCC is the best material for the wiping out of EY from aqueous solutions.
Homo- and heterometallic coordination networks based on linear trinuclear Co(II) units: syntheses, structures and magnetic properties

Two three-dimensional (3D) coordination networks, [Co3(1,4-BDC)3(L1)]∞ (L1 = N,N′-bis(3-pyridinyl)-1,4-benzenedicarboxamide; 1,4-H2BDC = 1,4-benzenedicarboxylic acid), 1, and [K2Co3(L2)4]∞ (H2L2 = 5-acetamidoisophthalic acid), 2, have been synthesized by hydrothermal reactions and characterized by single crystal X-ray crystallography. Complex 1 consists of linear trinuclear Co(II) centers, which are linked by the 1,4-BDC− and L1 ligands to form a rare (1 + 3) self-catenated 3D net with the new (36,410,511,6) topology, and complex 2 reveals a 3p–3d heterometallic coordination network based on linear trinuclear Co(II) and dinuclear K(I) centers bridged by the μ6-L2 ligands, forming a 4,4,8-connected trinodal net with the new (414·610·84)(42·64)(44·62) topology. The linear trinuclear Co(II) centers in 1 adopt the square pyramidal–octahedral–square pyramidal geometries, whereas those in 2 are tetrahedral–octahedral–tetrahedral. Both of the complexes exhibit paramagnetism that is consistent with the Curie–Weiss law between 60 and 300 K. The effective magnetic moments (〈μeff〉) of both complexes are larger than the estimated value of 6.71 μB/f.u. , revealing the spin–orbit couplings that are invoked by the different distorted geometries of the linear trinuclear Co(II) centers. The dinuclear K(I) centers in 2 weaken the magnetic coupling, and reduce the antiferromagnetic ordering at 6 K.
Do combined applications of crop residues and inorganic fertilizer lower emission of N2O from soil?

Emissions of N2O were measured following addition of 15N‐labelled residues of tropical plant species [Vigna unguiculata (cowpea), Mucuna pruriens and Leucaena leucocephala] to a Ferric Luvisol from Ghana at a rate of 100 mg N/kg soil under controlled environment conditions. Residues were also applied in different ratio combinations with inorganic N fertilizer, at a total rate of 100 mg N/kg soil. N2O emissions were increased after addition of residues, and further increased with combined (ratio) applications of residues and inorganic N fertilizer. However, 15N‐N2O production was low and short‐lived in all treatments, suggesting that most of the measured N2O‐N was derived from the applied fertilizer or native soil mineral N pools. There was no consistent trend in magnitude of emissions with increasing proportion of inorganic fertilizer in the application. The positive interactive effect between residue‐ and fertilizer‐N sources was most pronounced in the 25:75 Leucaena:fertilizer and cowpea:fertilizer treatments where 1082 and 1130 mg N2O‐N/g residue were emitted over 30 days. N2O (loge) emission from all residue amended treatments was positively correlated with the residue C:N ratio, and negatively correlated with residue polyphenol content, polyphenol:N ratio and (lignin + polyphenol):N ratio, indicating the role of residue chemical composition in regulating emissions even when combined with inorganic fertilizer. The positive interactive effect in our treatments suggests that it is unlikely that combined applications of residues and inorganic fertilizer can lower N2O emissions unless the residue is of very low quality promoting strong immobilisation of soil mineral N.
New anti-blur and illumination-robust combined invariant for stereo vision in human belly reconstruction

Abstract This paper presents a human belly surface image matching technology based on stereo vision system. Our aim is to still recover the human belly surface shape accurately and efficiently in spite of the influences derived from illumination variation, blur affection and image transformation on the 2D images concerning the frontal and rear sides of belly acquired by only four cameras. For this purpose, we devote to develop an innovative stereo matching algorithm which includes two major phases. In the first phase, a novel feature descriptor is constructed by substituting blur invariance into new illumination-robust combined invariants based on Hu-moment, which can avoid the various influences from the actual photographing. The external factors that may cause the images non-ideal such as the illumination variation, the camera photosensitive discrepancy from the different perspective images, the motion of the organism, noise and so on. Meanwhile, the pixel gradient-level intensity is brought into similarity measure, which greatly overcomes the noise influence. In the second phase, strict geometric constraints composed of the distance and the slope between matching pairs are proposed for eliminating the error matching pairs, consequently, more exact matching pairs obtained at this stage, subsequently these exact pairs are taken as the seeds to generate dense cloud data so as to ensure to recover the panorama of subject’s belly realistically. The experimental results reveal that not only the cost of the presented method is more inexpensive, but also the set-up is more simply than those of the 3D scanner, with highly similar measurement accuracy of human belly shape to the 3D scanner method.
Preliminary results from a genetic analysis of clinical mastitis data

First lactation clinical mastitis records from Norwegian health recording were analysed. These preliminary analyses utilised data on 70,861 daughters from 2 annual batches of a total of 257 young bulls. Genetic parameters of mastitis resistance were estimated with both a threshold and a traditional linear model analysis, resulting in heritability estimates of 0.09 and 0.05 respectively. Mastitis information from the period 10 days prior to 90 days after calving resulted in the highest heritability estimate. Estimated breeding values and ranking of bulls were compared for the threshold and linear models. Correlations using either criterion were both greater than 0.99. ___________________________________________________________________________________
Homostructural two-ring mesogens: a comparison of p-carboranes, bicyclo[2.2.2]octane and benzene as structural elements

Mesogenic properties of diheptyl and diheptynyl derivatives of 12- and 10-vertex bi-p-carboranes have been studied in the pure state and as binary mixtures with a nematic host. The results are compared with those for analogous derivatives of bibicyclo[2.2.2]octane and biphenyl. The clearing temperature for 10,10 -diheptyl-bi-p-carborane B2 is significantly lower than that for the 12-vertex analogue B1 and still lower than that for the corresponding bicyclo[2.2.2]octane derivative B3. The observed order of mesophase stability is opposite to the trend expected from shape and polarizability anisotropy. Introduction of an acetylene link into bicarborane derivatives dramatically lowers the clearing temperatures by about 150 C. The results are rationalized in terms of molecular conformations and intramolecular rotational barriers.
Activation of PCL Surface by Ion Beam Treatment to Enhance Protein Adsorption

Polymer substrates with tailored surface properties are increasingly desired in tissue engineering studies. In this work a procedure was developed to improve the use of a polycaprolactone (PCL) films for these applications. Ion beam treatments of PCL films activated the surface by different modification mechanisms. The PCL activation conditions were studied using several techniques to evaluate the modifications of the films surface. The results obtained from FTIR, X-ray photoelectron spectroscopy and atomic force microscopy indicated that a gradual modification of the composition and microstructure of the films was induced by the process. The modified surfaces induced shifts in Zeta potential vs pH curves and increased the polar component of the surface free energy. The protein adsorption characteristics of the PCL films were monitored by microgravimetric techniques confirming that the ion beam treatment was able to trigger bovine serum albumin adsorption onto the treated PCL surface.
Exfoliation of single-wall carbon nanotubes in aqueous surfactant suspensions: A Raman study

Aqueous suspensions of bundles and individual single-wall carbon nanotubes were prepared with the help of surfactants. We study the changes in the Raman spectra of the suspensions with respect to powders, and of exfoliated tubes with respect to bundles. The radial breathing modes (RBM) upshift in suspensions because of the internal pressure of the liquid. By contrast, no shift is observed in the RBM spectra after exfoliation in the suspensions. However, we demonstrate a selectivity of the exfoliation process for tubes of small diameters.
Modeling of phosphoric acid purification contaminated by magnesium and cadmium

Abstract The present study brings to light modeling of the purification of phosphoric acid, which is obtained through the wet process route. The said wet process inevitably is used to remove the impurities, mainly the heavy metal cations such as Mg2+, Cd2+, etc., which are initially present in the phosphate rocks and it is imperative that these impurities be removed . For the very same purpose, liquid–liquid extraction has proven to be one of the most reliable techniques and hence it is again considered, basing the model on the purely theoretical considerations of thermodynamics and mass transfer. The developed model was tested on two systems with Mg2+and Cd2+ as the contaminants and dinonylnaphthalene sulfonic acid and di (2-ethylhexyl) dithiophosphoric acid as complexing agents, both diluted in kerosene and dodecane, respectively. A parametric study was carried out, to investigate the effect of certain key parameters such as the phosphoric acid and the extractant initial concentrations.
Determinação de deoxinivalenol e zearalenona em arroz natural e parboilizado e suas frações utilizando quEChERS e HPLC/UV-FL

The QuEChERS extraction method followed by quantification using HPLC/UV-FL was evaluated for deoxynivalenol (DON) and zearalenone (ZEA) determination in natural and parboiled rice and their fractions (bran and husk). The comparison between QuEChERS and partition with acetonitrile extraction showed that the first one was better. It presented higher recovery (91% for DON, 105% for ZEA) wih precision ranging from 1.5 to 18.6%. The limits of quantification were 22.2 µg kg-1 for DON and 4.3 µg kg-1 for ZEA. DON and ZEA showed higher levels in endosperm of parboiled rice (8 e 111.7 µg kg-1, respectively) when compared to natural rice.
Visible light assisted photocatalytic hydrogen generation and organic dye degradation by CdS–metal oxide hybrids in presence of graphene oxide

Single step hydrothermal synthesis of CdS/Oxide (Oxide = ZnO, Al2O3) was demonstrated and examines their photocatalytic activity in presence of graphene oxide (GO). CdS/Al2O3/GO and CdS/ZnO/GO both exhibits enhanced photocatalytic activity for hydrogen generation with apparent quantum yields (AQY) of 14% and 30% respectively. Moreover, CdS/Oxide/GO displayed efficient photodegradation of an organic dye; ∼90% for CdS/Al2O3/GO and ∼99% for CdS/ZnO/GO within 60 min of time interval. Superior photocatalytic properties are attributed to the enhanced surface area and effective separation of photoinduced charge carriers due to the presence of GO. The present study highlights the potential application of graphene based materials in the field of energy conversion and environment remediation.
PREDICTION OF BREAST CANCER STAGES USING MACHINE LEARNING

Disease is the normal issue for all individuals on the planet with various kinds. Especially, Breast Cancer is the most regular ailment as a disease type for ladies. Along these lines, any advancement for analysis and expectation of malignant growth illness is capital significant for a solid life. AI methods can cause a colossal to contribute on the cycle of early analysis and expectation of disease. In this paper, two of the most mainstream AI methods have been utilized for characterization of Wisconsin Breast Cancer (Original) dataset and the arrangement execution of these procedures have been contrasted and each other utilizing the estimations of exactness, accuracy, review and ROC Area. The best exhibition has been acquired by Support Vector Machine strategy with the most elevated exactness.
Retroﬁtting an old Car with Modern Perception Hardware and Deep Learning Based Algorithms

—In this project, we present an end-to-end early warning system for an old car. We have setup the hardware platform based on Jetson Nano, consisting of sensors such as RTK GPS, Radar and Stereo Camera. With these sensors we have collected data under the ROS framework. With the collected raw data we have studied several deep learning based perception algorithms with emphasis on 2D object detection with radar fusion and 3D object detection. The system will generate buzzing sound to assist the driver if it detects potential risks, such as unplanned lane change, or a pedestrian in the way.
Don’t Stop the Music: Playlist Continuation with Autoencoders

The rising popularity of music streaming services has generated an ever-increasing amount of data on musical tracks and listeners’ tastes. In particular, the 2018 RecSys Challenge features a newly-released dataset by Spotify containing one million playlists created by users of the online music streaming service. In this project, we explore the use of autoencoder methods for learning a low-dimensional representation of the playlist-song space, demonstrate the robustness of autoencoder methods to data sparsity, and compare the results achieved by autoencoders against a matrix factorization baseline
Sorption Behavior of Crawfish Chitosan Films as Affected by Chitosan Extraction Processes and Solvent Types

Effects of chitosan extraction processes and solvent types on sorption behavior of unplasticized crawfish chitosan films were investigated. Four different chitosans prepared from crawfish shell were dissolved in 1% v/v acetic, formic, lactic, or malic acids at 1% w/v concentration. Chitosans dissolved in acetic or formic acid formed flexible and transparent films that are desirable for packaging applications. Chitosan acetate films maintained lower moisture contents at any relative humidity level compared with chitosan formate films. The type of chitosan significantly influenced the sorption isotherms of chitosan formate films but not chitosan acetate films. The Guggenheim-Anderson-de Boer, Oswin, and Caurie models (R2= 0.98, 0.95, and 0.95, respectively) could be used to predict sorption behavior of crawfish chitosan acetate and formate films.
Synthesis of Ferrocene‐Modified Carbon Nitride Photocatalysts by Surface Amidation Reaction for Phenol Synthesis

A polymeric Fc-CO-NH-C3N4 (Fc-CN) material was synthesized by amidation reaction of ferrocenecarboxylic acid (Fc-COOH) with NH2 groups on the surface of mesoporous graphitic carbon nitride (MCN). The properties of the as-synthesized samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, UV-Vis diffuse reflectance spectra, N2 adsorption-desorption isotherm, photoluminescence spectroscopy, transmission electron microscopy, electron paramagnetic resonance, (photo)electrochemical measurement and X-ray photoelectron spectroscopy. The resultant catalysts were investigated as heterogeneous catalysts for the selective oxidation of benzene to phenol using H2O2 as a green oxidant under visible light irradiation. The results reveal that Fc-modified samples can not only extend the visible light absorption, but also accelerate the bulk-to-surface charge transfer and separation via surface dyadic structures, both of which are favorable for phenol production from benzene photocatalytic hydroxylation with H2O2. Under the optimal conditions, up to 16.9 % phenol yield (based on benzene) is obtained by Fc-CN/1.5-5 sample, and the corresponding Fe content is about 0.64 wt%. Furthermore, after the second run, no significant decrease of the activity (in term of TOF) and the selectivity is found in Fc-CN/1.0-5 sample. Combined with the experimental results and Fenton-chemistry, a possible photocatalytic reaction mechanism on the hydroxylation of benzene to phenol at neutral medium with visible light is proposed.
Homogeneous Fluorescence Resonance Energy Transfer Immunoassay for the Determination of Zearalenone

This study demonstrates the use of antigen-antibody binding for the detection of zearalenone. Based on the principle of the fluorescence resonance energy transfer (FRET) phenomenon between antibody and antigen, an immunoassay, in which zearalenone coupled with the anti-zearalenone antibody, was developed, optimized, and applied. Owing to intrinsic fluorescence properties in basic pH conditions with the optimal cationic surfactant, anti-zearalenone and zearalenone played roles as the respective donor and acceptor in the FRET immunoassay. As the concentration of analyte increased, the antigen/antibody emission intensity ratio (I 430 nm/I 350 nm) was enhanced due to larger amounts of zearalenone/anti-zearalenone complexes. This assay, based on the ratio of intensities (I 430 nm/I 350 nm), displayed high specificity and sensitivity with a detection limit of 0.8 ng mL−1 for zearalenone. The results obtained from analysis of spiked wheat grain samples were found to be in good agreement with those obtained by employing a direct competitive enzyme-linked immunosorbent assay. The label-free, noncompetitive, and homogeneous FRET immunoassay strategy served as a powerful tool for the simple, rapid, and sensitive quantitative determination of zearalenone in food and feed matrices.
pH dependence of methyl phosphonic acid, dipicolinic acid, and cyanide by surface-enhanced Raman spectroscopy

U.S. and Coalition forces fighting terrorism in Afghanistan and Iraq must consider a wide range of attack scenarios in addition to car bombings. Among these is the intentional poisoning of water supplies to obstruct military operations. To counter such attacks, the military is developing portable analyzers that can identify and quantify potential chemical agents in water supplies at microgram per liter concentrations within 10 minutes. To aid this effort we have been investigating the value of a surface-enhanced Raman spectroscopy based portable analyzer. In particular we have been developing silver-doped sol-gels to generate SER spectra of chemical agents and their hydrolysis products. Here we present SER spectra of methyl phosphonic acid and cyanide as a function of pH, an important factor affecting quantitation measurements, which to our knowledge has not been examined. In addition, dipicolinic acid, a chemical signature associated with anthrax-causing spores, is also presented.