Miracle-dz/UniFAR-FTUs huggingface dataset:
Balancing phases for obtaining the same hardness in Al-Cu-Zn alloys with different compositions

Five Al-Cu-Zn alloy samples were developed using different chemical compositions. All samples have the same hardness of 67 RB, which was obtained by a methodology that predicts the hardness of alloys. Each alloy sample was analyzed using X-ray diffraction, scanning electron microscope, and hardness measurements. This analysis permitted to know the change in chemical composition for maintaining the same hardness in each sample. The samples used in equilibrium have of three phases, η, α and τ’, however, in these samples there are other phases present, such as ε, β and θ. As is well known, if the chemical percentage is changed in the alloys, the phase percentage changes, and therefore the mechanical properties. This work results show that even when the chemical percentages drastically change, the hardness remains the same. The principal cause for maintaining the same hardness is using the contact area in the white zone composed by η and ε with respect to the other phases. If the perimeter of contact of the white zone is kept within a specific range, the hardness of all samples will be the same with a margin of error that is less than 3%. This is important to the development to new alloys.
Modelling Timbral Hardness

Hardness is the most commonly searched timbral attribute within freesound.org, a commonly used online sound effect repository. A perceptual model of hardness was developed to enable the automatic generation of metadata to facilitate hardness-based filtering or sorting of search results. A training dataset was collected of 202 stimuli with 32 sound source types, and perceived hardness was assessed by a panel of listeners. A multilinear regression model was developed on six features: maximum bandwidth, attack centroid, midband level, percussive-to-harmonic ratio, onset strength, and log attack time. This model predicted the hardness of the training data with R 2 = 0.76. It predicted hardness within a new dataset with R 2 = 0.57, and predicted the rank order of individual sources perfectly, after accounting for the subjective variance of the ratings. Its performance exceeded that of human listeners.
Enhanced performance of common electrode materials by means of Atmospheric Plasma Spray coatings

Atmospheric Plasma Spray has been used to obtain titanium sub-oxide coatings on steel film, aluminium film, carbon-polymer composite and nickel foam substrates. Substrate roughness had to be increased for boosting the adhesion of the coating on the smooth electrodes, which was especially critical for the fragile carbon-polymer composite. High energetic conditions increased coefficient of thermal expansion mismatch for coating steel and aluminium thin sheets and degraded carbon-polymer composite and nickel foam. Therefore, it was necessary to adjust the spraying parameters towards lower energetic conditions in order to achieve well-bonded and homogeneous coatings on all four different substrates without the presence of cracks in their cross-sectional area. The coated materials are investigated for battery electrode applications. acquisition software. Potentials were measured against a saturated calomel reference electrode (SCE) and a platinum counter electrode was used. Measurements were taken at 20ºC electrolytes were
Structure of the Murine Erythropoietin Receptor Complex

The structure of the murine erythropoietin receptor was studied using antibodies against the intracellular part of the cloned erythropoietin receptor chain. These antibodies precipitated erythropoietin-receptor complexes from Triton X-100-solubilized cells. When the complexes were cross-linked by disuccinimidyl suberate, the 85and 100-kDa erythropoietin-cross-linked proteins previously described were immunoprecipitated. However, these proteins were not precipitated when the complexes were denatured and reduced before immunoprecipitation. Using l-ethyl 3-(3-dimethylaminopropyl)carbodiimide, we observed erythropoietin cross-linking with a protein of 66 kDa in addition to the 100and 85-kDa proteins. Only the 66kDa erythropoietin-cross-linked protein was immunoprecipitated by anti-receptor antibodies after denaturation and reduction of the complex. Thus, our results suggest that the 85and 100-kDa proteins previously evidenced by cross-linking are associated with the cloned chain of the receptor to form a multimeric complex but these proteins seem immunologically unrelated to the cloned chain. We observed that reducing the length of molecules able to cross-link amino groups decreased the efficiency of cross-linking with the 100kDa protein and only the 85-kDa protein was crosslinked with erythropoietin using 1,5-difluoro-2,4-dinitrobenzene. These results suggest that the 85and 100-kDa proteins occupate slightly different positions relative to the erythropoietin molecule bound to the receptor.
Psychological Well-Being and Academic Achievement among School-Aged Children a Systematic Review

Well-being is considered a prerequisite for a number of outcomes, including academic achievement, and yet research reporting on the association between well-being and academic achievement yields ambiguous results. A systematic review into this association, in accordance with PRISMA guidelines was conducted in PubMed and PsycINFO from June to September 2017. Title, abstract, and full text were screened by two independent raters, and 22 articles were eligible. Results were inconsistent, reporting both positive association, no association or conflicting results. Studies reporting positive association were primarily cross-sectional, focused on relational aspects of well-being and on younger children, and used parent or teacher-ratings in addition to self-report. The conflicting studies indicated a need for future research into more specific aspects of well-being and academic achievement, preferably using longitudinal study designs.
Human Limb Motion Detection with Novel Flexible Capacitive Angle Sensor Based on Conductive Textile

In recent years, many sensors made of hard materials have been designed to detect human body movements in physical exercises. However, hard materials usually cause extra dyskinesia for body movements. To detect human limb motion with less dyskinesia in physical exercise, a novel flexible capacitive angle sensor (NFCAS) based on a conductive textile was designed in this paper. The NFCAS has two non-parallel plates, namely, an exciting plate and a sensing plate, which can be fixed onto the inner forearm and the inner upper arm. Thus, the angle between the two plates of the NFCAS can be used to represent the angle of medial elbow, and its variation can lead to changes in the sensor’s capacitance at the same time. A push-ups experiment and pull-ups experiment were conducted to evaluate the designed NFCAS’s performance. Experimental results showed that the NFCAS could detect the main processes of push-ups and pull-ups. Besides high measurement precision, the NFCAS is also soft, thin, lightweight, and easily made. Therefore, it can be widely applied for detecting human limb motion with less dyskinesia in physical exercises.
DNA Polymerase ÃŸMutations in Human Colorectal Cancer1

Increasing numbers of alterations have been found in protooncogenes (e.g., ras, mir), as well as tumor suppressor genes (e.g., p53, Rb) in various types of tumors. The multiple mutations cannot be explained by the spontaneous mutation rate. It has been suggested that mutator phenotypes leading to the accumulation of these mutations may be required in the early stages of tumorigenesis. To test this hypothesis, the entire coding region of DNA polymerase 0, a repair enzyme, mRNA from colorectal tumors, and corresponding normal mucosa were amplified by polymerase chain reaction, cloned, and sequenced. Mutations in the catalytic domain of DNA polymerase ÃŸwere detected in colorectal tu mor specimens compared to the normal colorectal mucosa, placenta, and blood samples. Since these mutations changed the structure of poly merase ÃŸ, it is expected that the efficiency of the DNA repair system would be impaired and thus may account for the high mutation rate observed in colorectal carcinomas.
A de Novo G to T Transversion in a Prod ( 1 ) Collagen Gene for a Moderate Case of Osteogenesis Irnperfecta

Cultured fibroblasts from a patient affected with a moderate form of osteogenesis imperfecta were defective for the synthesis of type I collagen molecules; about half of the al(1) chains contained a cysteine residue in the triple helical domain and a disulfide link formed when two mutant al(1) chains were incorporated into a type I collagen heterotrimer. The proband’s parents were clinically and biochemically normal. The cysteine was localized within peptide al(1)CBS between residues 170 and 200 of the triple helical domain using a chemical procedure with 2-nitro-5-thiocyanobenzoic acid (Tenni, R., Rossi, A., Valli, M., Mottes, M., Pignatti, P. F., and Cetta, G. (1990) Matrix 10, 20-26). Type I procollagen heterotrimers containing either one or two mutant chains showed (i) a slight abnormality in secretion from cells; (ii) a low degree of post-translational overmodifications; (iii) the same, but lower than normal, thermal stability. Total RNA was isolated from the proband’s dermal fibroblast cultures, and cDNAs for pro-al(1) were prepared using total RNA. A portion of cDNA, coding for the region encompassing residues 119-193 of al(1) triple helical domain, was amplified by polymerase chain reaction. A single base pair mismatch was identified by chemical cleavage of DNA-DNA heteroduplexes, indicating a possible substitution of a guanine in the triplet coding for glycine 178 or 181. The same unique mismatch was detected by chemical cleavage in about one-half of the molecules in heteroduplexes formed between patient’s pro-al(1) mRNAs and a normal cDNA probe. The amplified products were cloned and sequenced, confirming the heterozygous nature of the patient and demonstrating the presence and the location of a missense mutation; a single T for G substitution was found in the first base of the triplet coding for residue 178 of al(1) triple helical domain, leading to a cysteine for glycine substitution. Allele-specific oligonucleotide hybridization to amplified DNA con-
Graphene-derivates containing responsive nanocomposite polymer gels: Effect of concentration and surface chemistry of the nanoparticles

Reduced graphene oxide (RGO) containing composite hydrogels, based on poly( N -isopropylacrylamide) (PNIPA) were prepared by two different methods: i) by incorporating RGO directly into the polymer matrix; ii) applying a post-synthesis reduction of the graphene-oxide (GO) already incorporated into the polymer. The samples were compared by various microscopic (small angle neutron scattering, differential scanning calorimetry, 1 H NMR spectroscopy, thermogravimetry) and macroscopic (kinetic and equilibrium swelling properties and mechanical testing) techniques. Results from microscopic and macroscopic measurements show that the dispersity of the nanoparticles as well as their interaction with the polymer chains are influenced by their surface chemistry. Incorporation of nanoparticles limits the shrinkage and slows down the kinetics of the thermal response. Both thermogravimetric and solid-state 1 H NMR measurements confirmed strong polymer – nanoparticle interaction when hydrophilic GO was used in the synthesis. In these cases, the slow thermal response may be explained by the decrease of the free volume inside the nanocomposite matrix caused by a hypernodal structure. Our results imply that both the chemistry and the concentration of incorporated graphene derivatives are promising in tuning the thermal responsivity of PNIPA.
International Journal of Scientific Research in Computer Science, Engineering and Information Technology

100 Artificial Intelligence Chatbot Adoption Framework for Real-Time Customer Care Support in Kenya 1Geoffrey Nyongesa, 2Kelvin Omieno, 3Daniel Otanga 1,3Department of Information Technology, Masinde Muliro University of Science and Technology, Kakamega Kenya 2Department of Information Technology and Informatics, Kaimosi Friends University College, Kaimosi, Kenya Correspondence mail: jeffnyongesah@gmail.com
Alternative Exchange Rate Regimes for MENA countries

Middle East and North African (MENA) countries have traditionally anchored their currencies largely on the US dollar, but the creation of the euro means that there is now for the first time a real alternative numéraire and anchor available. This paper estimates the effect of a menu of exchange rate regimes on trade within a gravity model, using the Baier & Bergstrand (2006) Taylor expansion technique to allow for multilateral trade resistance. This approach allows simulations of the effects of changes in the exchange rate regime for a particular country or region which explicitly take into account the associated changes in multilateral and world trade resistance. Results are presented for eight different scenarios: pegging to the dollar, dollarising, pegging to the euro and euroising, each of these on an individual country basis and when the MENA countries all implement the change together. We find that in terms of the trade effects for most MENA countries it would be better to anchor on the euro than on the dollar, but for some others (typically small oil exporters with large exports to Asian countries) it would be better to continue to anchor on the dollar.
EXTENSION OF NEWTON-KANTOROVICH THEOREM FOR SUBANALYTIC EQUATIONS

This paper deals for the Newton’s method for solving equations of the form F (x) = 0 where F is a semismooth function. We first recall some existing results and after we give a new global convergence result when F is a Lipschitz and subanalytic function from R to R. Mathematics Subject Classification 2010: 65J15, 65K10.
Mercury pollution in hornbeam ( Carpinus betulus ) trees in green space at industrial park area (Iran) Contaminación por mercurio en árboles de carpes ( Carpinus betulus ) en espacios verdes en el área del parque industrial (Irán)

The heavy metal mercury is a toxic metals that can accumulate in plant organs in large quantities and is toxic to humans. Hornbeam, Carpinus betulus , is a species from Caspian hyrcanian mixed forests. In this research, it was studied how much mercury hornbeam absorbed from the environment. Twenty five trees were randomly selected, and the distances between trees were 10 to 15 m in industrial park North of Iran. From each tree selected, 15 g leaves and 15 g root were harvested using horticultural scissors and 15 g of soil from 30 cm depth. Four stations were selected near steel factory. A control station located 2 km from the steel factory was selected and three stations were located near the steel factory. Samples of leaves, soil and roots are prepared after coding, placed in paper envelopes and transferred to the lab. The amount of mercury in plant samples was prepared by dry digestion with atomic absorption spectroscopy. To compare the effect of mercury concentration on leaf and root, Tukey's test was used. The average concentration of mercury in soil was 0.96 mg/kg, in root 0.551 mg/kg and leaf 0.28 mg/kg. It was observed that as mercury increases, the leaf chlorophyll content decreases. Results allowed concluding that Carpinus betulus tree accumulation amount is suitable for absorbing the contamination of mercury in soil pollution.
Genome-wide identification and classification of the Hsf and sHsp gene families in Prunus mume, and transcriptional analysis thereof under heat stress

1 Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, China 2 College of Landscape and Forestry, Qingdao Agricultural University, Qingdao, China 3 School of Nuclear Technology and Chemisity & Biology, Hubei University of Science and Technology, Xianning, China 4 Institute of Industrial Crops, Hubei Academy of Agricultural Sciences, Wuhan, China
J. Gen. Appl. Microbiol., 53, 81–88 (2007)

Per-ARNT-Sim (PAS) domain is identified in proteins from all kingdoms, Bacteria, Archaea and Eukarya, and involves in sensing oxygen, redox potential or light signal (Taylor and Zhulin, 1999). Proteins containing PAS domain have a cofactor important for signal sensing, such as a chromophore of flavin adenine dinucleotide (FAD), flavin mononucleotide (FMN) or heme, and signals received by the proteins are transmitted to regulate gene expression or physiological behavior to adapt changes of surrounding conditions (Taylor and Zhulin, 1999; Zhulin et al., 1997). Recently, it was reported that, by a biochemical approach, YtvA of Bacillus subtilis might act as a photoreceptor (Losi, 2004). YtvA consists of N-terminal light, oxygen or voltage (LOV) domain, a subset of PAS domain superfamily, and C-terminal sulfate transporter and anti-sigma antagonist (STAS) domain. The LOV domain of YtvA, containing one molecule of FMN, shows a similarity to that of plant blue light receptor phototropin (phot) (Crosson et al., 2003; Losi et al., 2002). The mechanism of light sensing in the LOV domain of phot (phot-LOV) was well-studied, which is mediated by formation of a covalent C(4) flavin-cysteinyl adduct; upon illumination, the -SH group of the conserved Cys residue forms a covalent bond with FMN, and the photoadduct is dissociated in dark condition (Crosson et al., 2003; Salomon et al., 2000). The same photocycle was reported for the LOV domain of YtvA. Enhancement of a s-dependent stress response in Bacillus subtilis by light via YtvA photoreceptor
Laser capture microdissection and isolation of high quality RNA from frozen tissue

i. Abstract Laser capture microdissection (LCM) allows expression profiling of specific cell populations within tissues. However, isolation of high quality RNA from laser capture microdissected frozen tissue is beset by problems arising from intrinsic tissue RNase activity. Herein, we describe an optimised staining/LCM/RNA extraction protocol developed for the isolation of epithelial RNA from frozen tissue sections using human endometrial cancer as a model tissue. This method combines excellent, reproducible visualisation of tissue morphology with the isolation of high integrity RNA suitable for downstream applications such as expression microarray analysis. We present quantitative and qualitative RNA data obtained from >200 endometrial epithelial samples (normal, hyperplastic and cancerous), where 92% of samples had RIN values of 7 and above and highlight common pitfalls faced by investigators. This method should also be broadly applicable to a range of other tissue types.
Reactions of some common bean cultivars grown in Turkey against some isolates of angular leaf spot disease, caused by Pseudocercospora griseola (Sacc.) Bitki Koruma Bülteni / Plant Protection Bulletin

Vegetable bean production as mid-season crops in greenhouses has increased in two provinces, Bartın and Zonguldak, in the Western Black Sea region. Green bean is sown in about half of the total area of 510.000 da in this region. Angular leaf spot disease caused by Pseudocercospora griseol a has been a serious disease for the last five years and it is so widespread in the region, showing almost 100% incidence. Since the beans are used for fresh consumption and are harvested continuously, fungicide use is restricted due to unwanted residues. Because of the farmers in the region widely use two local cultivars susceptible to the disease, providing resistant cultivars for farmers was the aim of this study. Although the causal agent has great pathogenic variation, determination of pathotypes of the P. griseola was not succeed since the three of the differential cultivars did not produced seed in two tested regions of Turkey. For this reason seventeen common bean cultivars in Turkey were selected and their reactions against ten randomly selected the most aggressive isolates of P. griseola were used for screening resistance. Two bush type bean cultivars, Bourgondia and Yalova 17, out of nine showed resistant reaction against all of ten isolates while three climbing types, Fabio, Burayşe and Selvi, out of eight were found resistant against all of the isolates of P. griseola . All of these resistant cultivars have good culinary characteristics.
Quality Assurance and Safety of Crops & Foods

Taking into account, that freeze-dried red and purple potatoes are a rich source of polyphenols, mostly anthocyanins, it seems reasonable to utilise such raw material, free of gluten, to produce gluten-free snacks based on maize, by means of extrusion. The aim of the study was to analyse the content of bioactive polyphenols in extruded maize snacks with varying share of freeze-dried red and purple potatoes of the varieties Magenta Love and Blue Star, and to evaluate their antioxidant potential. Additionally the analysis of consumer acceptance of such products was performed. It was observed, that maize extrudates with a share of freeze-dried red and purple potatoes are an innovative, valuable pro-health product which could be used by healthy consumers, but also by the people with certain dietary disorders, such as celiac disease. Application of 25% share of freeze-dried red potatoes Magenta Love variety to extrudates proved to be the best in terms of content of bioactive compounds and antioxidant activity. Also the colour, high sensory scores and improved texture properties suggest that such a product could be well accepted on the market.
q-Pascal's triangle and irreducible representations of the braid group B_3 in arbitrary dimension

We construct a [(n+1)/2]+1 parameters family of irreducible representations of the Braid group B_3 in arbitrary dimension n\in N, using a q-deformation of the Pascal triangle. This construction extends in particular results by S.P.Humphries [8], who constructed representations of the braid group B_3 in arbitrary dimension using the classical Pascal triangle. E.Ferrand [7] obtained an equivalent representation of B_3 by considering two special operators in the space C^n[X]. Slightly more general representations were given by I.Tuba and H.Wenzl [11]. They involve [(n+1)/2] parameters (and also use the classical Pascal triangle). The latter authors also gave the complete classification of all simple representations of B_3 for dimension n\leq 5. Our construction generalize all mentioned results and throws a new light on some of them. We also study the irreducibility and the equivalence of the representations. In [17] we establish the connection between the constructed representation of the braid group B_3 and the highest weight modules of U(sl_2) and quantum group U_q(sl_2).
A combined space discrete algorithm with a Taylor series by time for CFD

The first order by time partial differential equations are used as models in applications such as fluid flow, heat transfer, solid deformation, electromagnetic waves, and others. In this paper we propose the new numerical method to solve a class of initial-boundary value problems for the PDEs using one of the known space discrete numerical schemes and a Taylor series expansion by time. Normally a second order discretization by space is applied while a first order by time is satisfactory. Nevertheless, in a number of different problems, discretization both by temporal and by spatial variables is needed of highest orders, which complicates numerical solution, in some cases dramatically. Therefore it is difficult to apply the same numerical methods for the solution of some PDE arrays if their parameters are varying in a wide range so that in some of them different numerical schemes by time fit the best for precise numerical solution. The Taylor series based solution strategy for the non-stationary PDEs in CFD simulations has been proposed here that attempts to optimise the computation time and fidelity of the numerical solution.