Miracle-dz/UniFAR-FTUs huggingface dataset:
Electro-Chemical Impedance Spectral (EIS) Study of Patinated Bronze Corrosion in Sulfate Media: Experimental Design Approach

The aim of the present investigation was to model the experimental conditions of tin bronze patination using full factorial experimental design. In this sense, a full factorial design approach was developed to model the corrosion behavior of patinated tin bronze alloy in sulfate electrolyte. Three experimental factors (the immersion time in the chloride electrolyte, the potential limit for the anodic sweep Elim, and the potential scan rate) were chosen to identify the significant factor on the patina growth process at the bronze substrate. The experimental responses were the kinetic parameters extracted from the electro-chemical spectra (EIS) for eight different experiments. An equivalent electrical circuit containing an electrolyte resistance (Re), a double layer capacitance (CPEdl), a charge transfer resistance (Rt) and Gerischer element (G), was developed to model the patinated bronze corrosion process. The electro-chemical spectra (EIS) show that the corrosion process of the patinated bronze alloy occurred from a chemical reaction is followed by an electrochemical one. Analysis of the experimental responses showed that while the scan rate is the most influent factor for the corrosion potential (Ecorr), the electrolyte resistance (Re), and the double layer capacitance CPEdl variation, the potential limit is the significant factor for charge transfer resistance Rt, reciprocal of the admittance parameter Y0 and the effective transfer rate of the chemical reaction k variation.
Epilepsy and Neuromodulation—Randomized Controlled Trials

Neuromodulation is a treatment strategy that is increasingly being utilized in those suffering from drug-resistant epilepsy who are not appropriate for resective surgery. The number of double-blinded RCTs demonstrating the efficacy of neurostimulation in persons with epilepsy is increasing. Although reductions in seizure frequency is common in these trials, obtaining seizure freedom is rare. Invasive neuromodulation procedures (DBS, VNS, and RNS) have been approved as therapeutic measures. However, further investigations are necessary to delineate effective targeting, minimize side effects that are related to chronic implantation and to improve the cost effectiveness of these devices. The RCTs of non-invasive modes of neuromodulation whilst showing much promise (tDCS, eTNS, rTMS), require larger powered studies as well as studies that focus at better targeting techniques. We provide a review of double-blinded randomized clinical trials that have been conducted for neuromodulation in epilepsy.
Digital replica editions versus printed newspapers: Different reading styles? Different recall?

This article investigates reading styles and recall of the news from reading digital replicas of printed newspapers on tablets and compares them with the printed version. The study aims to theoretically understand the effects of the medium interface (tablet vs paper) on perceived reading style and recall of information. The experimental study (N = 90) showed that digital replicas were not perceived to be read in a more fragmented, selective, or elaborate manner than their printed counterparts. On average, readers recalled less from the digital edition than from the printed version, but the differences were small. The study also showed that “digital innovators” recalled the same amount of information from reading the newspaper on tablet as from reading it on paper, unlike less innovative readers: these readers recalled more from reading on paper than from tablet.
The association between smartphone use, stress, and anxiety: A meta‐analytic review

Research investigating the various mental, physical, and social effects of smartphone use has proliferated in the previous decade. Two variables of interest in this literature are the levels of anxiety and stress associated with smartphone use. The current meta-analysis aimed to provide the first quantitative review of this literature, as well as determine potential moderators that might influence this relationship. A total of 39 independent samples (N = 21, 736) were used to compute a summary effect size of r = . 22, p < . 001, CI [. 17-. 28] indicating a small-to-medium association between smartphone use and stress and anxiety. Significant moderators included the year in which the article was published, as well as whether problematic or nonproblematic phone use was assessed. In addition, studies using validated measures of smartphone use indicated a (nonsignificantly) larger association than studies using nonvalidated measures. Strengths and limitations of the meta-analysis, as well as future directions of research are discussed.
Risk Factors for Incomplete Polyp Resection during Colonoscopic Polypectomy

Background/Aims Colonoscopic polypectomy is highly efficient in preventing colorectal cancer, but polyps may not always be completely removed. Improved knowledge of the risk factors for incomplete polyp resection after polypectomy may decrease the cancer risk and additional costs. The aim of this study was to investigate the conditions that can cause incomplete polyp resection (IPR) after colonoscopic polypectomy. Methods A total of 12,970 polyps that were removed by colonoscopic polypectomy were investigated. Among them, we identified 228 cases with a positive resection margin and 228 controls with a clear resection margin that were matched for age, gender, and polyp size. We investigated the location, morphology, and histological type of the polyps and evaluated the skills of the endoscopist and assisting nurse. Results Multivariate analysis revealed that the polyps, which were located in the proximal part of the colon and rectum, were at significant risk of IPR. Histologically, an advanced polyp and an inexperienced assistant were also independent risk factors for IPR. Conclusions Polypectomy should be performed more carefully for polyps suspected to be cancerous and polyps located in the proximal part of the colon or rectum. A systematic training program for inexperienced assistants may be needed to decrease the risk of IPR.
DataLab: Introducing Software Engineering Thinking into Data Science Education at Scale

Data science education is a new area in computer science that has attracted increasing attention in recent years. However, currently, data science educators lack good tools and methodologies. In particular, they lack integrated tools through which their students can acquire hands-on software engineering experience. To address these problems, we designed and implemented DataLab, a web-based tool for data science education that integrates code, data and execution management into one system. The goal of DataLab is to provide a hands-on online lab environment to train students to have basic software engineering thinking and habits while maintaining a focus on the core data science contents. In this paper, we present the user-experience design and system-level implementation of DataLab. Further, we evaluate DataLab's performance through an in-classroom use case. Finally, using objective log-based learning behavior analysis and a subjective survey, we demonstrate DataLab's effectiveness.
Cheating, facilitation and cooperation regulate the effectiveness of phage‐encoded exotoxins as antipredator molecules

Temperate phage encoded Shiga toxin (Stx) kills the bacterivorous predator, Tetrahymena thermophila, providing Stx+ Escherichia coli with a survival advantage over Stx− cells. Although bacterial death accompanies Stx release, since bacteria grow clonally the fitness benefits of predator killing accrue to the kin of the sacrificed organism, meaning Stx‐mediated protist killing is a form of self‐destructive cooperation. We show here that the fitness benefits of Stx production are not restricted to the kin of the phage‐encoding bacteria. Instead, nearby “free loading” bacteria, irrespective of their genotype, also reap the benefit of Stx‐mediated predator killing. This finding indicates that the phage‐borne Stx exotoxin behaves as a public good. Stx is encoded by a mobile phage. We find that Stx‐encoding phage can use susceptible bacteria in the population as surrogates to enhance toxin and phage production. Moreover, our findings also demonstrate that engulfment and concentration of Stx‐encoding and susceptible Stx− bacteria in the Tetrahymena phagosome enhances the transfer of Stx‐encoding temperate phage from the host to the susceptible bacteria. This transfer increases the population of cooperating bacteria within the community. Since these bacteria now encode Stx, the predation‐stimulated increase in phage transfer increases the population of toxin encoding bacteria in the environment.
Scene-driven Retrieval in Edited Videos using Aesthetic and Semantic Deep Features

This paper presents a novel retrieval pipeline for video collections, which aims to retrieve the most significant parts of an edited video for a given query, and represent them with thumbnails which are at the same time semantically meaningful and aesthetically remarkable. Videos are first segmented into coherent and story-telling scenes, then a retrieval algorithm based on deep learning is proposed to retrieve the most significant scenes for a textual query. A ranking strategy based on deep features is finally used to tackle the problem of visualizing the best thumbnail. Qualitative and quantitative experiments are conducted on a collection of edited videos to demonstrate the effectiveness of our approach.
Boundary Tracing Algorithm for Automatic Skin Lesion Detection in Macroscopic Images

Diagnosis of disease of the skin needs patients history, physical examine and correct laboratory assay. The identification is terribly long method as a result of it required giant range of options clinical and histopathological for analysis and to give more treatment. Repeatedly the laboratory checks like skin diagnostic test, scrapings area unit painful to patients. Nowadays, numerous individuals live with cancer or have had cancer or the other skin diseases. The chance of developing many sorts of cancer will be attenuated by changes in a very person’s life-style, for instance, by staying far from tobacco, limiting time within the sun, being physically active and healthy consumption. Our aim is to seek out the categories of skin diseases by varied techniques of image process. The unwellness identification becomes tough because the complexness and range of features of the unwellness will increase. Hence pc power-assisted identification system is introduced. The implementation of pc rule consists of certain steps that involves image process, image feature extraction and data classification with the assistance of classifier such as Support Vector Machine(SVM). This paper presents a new approach for skin unwellness detection and analysis from given photograph of patient’s cancer affected space, which may be wont to automatize the identification of skin diseases. These strategies area unit compared for his or her effectiveness.
summer: 1. Direct emissions and secondary formation of organic matter in urban plumes

[1] Ship and aircraft measurements of aerosol organic matter (OM) and water-soluble organic carbon (WSOC) were made in fresh and aged pollution plumes from major urban areas in the northeastern United States in the framework of the 2004 International Consortium for Atmospheric Research on Transport and Transformation (ICARTT) study. A large part of the variability in the data was quantitatively described by a simple parameterization from a previous study that uses measured mixing ratios of CO and either the transport age or the photochemical age of the sampled air masses. The results suggest that OM was mostly due to secondary formation from anthropogenic volatile organic compound (VOC) precursors in urban plumes. Approximately 37% of the secondary formation can be accounted for by the removal of aromatic precursors using newly published particulate mass yields for low-NOx conditions, which are significantly higher than previous results. Of the secondary formation, 63% remains unexplained and is possibly due to semivolatile precursors that are not measurable by standard gas chromatographic methods. The observed secondary OM in urban plumes may account for 35% of the total source of OM in the United States and 8.5% of the global OM source. OM is an important factor in climate and air quality issues, but its sources and formation mechanisms remain poorly quantified.
Investor Reactions to New Product Development Failures

The authors develop a model of investor reactions to new product development (NPD) failures in high technology firms. They propose that a firm’s financial and managerial capabilities, and its strategic focus on R&D, influence investors’ perceptions of the firm’s market value after NPD failure and that these effects are contingent on the development stage of the failed product. Using data on 148 NPD failures of publicly traded biopharmaceutical firms and an event study methodology the authors find support for their hypotheses. They show that the relationships between a firm’s (a) financial capabilities, (b) managerial capabilities, and (c) strategic focus on R&D, respectively, and the decline of firm market value after NPD failure are more negative for products that fail in late development stages than for products that fail in early development stages. The authors’ results highlight the importance of a conjoint consideration of product-level and organizational-level effects in explaining investor reactions to NPD outcomes.
An Energy-Efficient Compressive Image Coding for Green Internet of Things (IoT)

Aimed at a low-energy consumption of Green Internet of Things (IoT), this paper presents an energy-efficient compressive image coding scheme, which provides compressive encoder and real-time decoder according to Compressive Sensing (CS) theory. The compressive encoder adaptively measures each image block based on the block-based gradient field, which models the distribution of block sparse degree, and the real-time decoder linearly reconstructs each image block through a projection matrix, which is learned by Minimum Mean Square Error (MMSE) criterion. Both the encoder and decoder have a low computational complexity, so that they only consume a small amount of energy. Experimental results show that the proposed scheme not only has a low encoding and decoding complexity when compared with traditional methods, but it also provides good objective and subjective reconstruction qualities. In particular, it presents better time-distortion performance than JPEG. Therefore, the proposed compressive image coding is a potential energy-efficient scheme for Green IoT.
Meta-Analysis of the Clinical Efficacy of the Placebo Effect from Tumour-Necrosis-Factor Inhibitors to Treat Rheumatoid Arthritis after Methotrexate Failure

Introduction: Tumour-necrosis-factor (TNF) inhibitors, used to treat rheumatoid arthritis (RA), have non-specific (placebo effect) and specific effects. This meta-analysis appraises these effects within the first 3 months of treatment. Data were collected from ACR 20, 50 and 70 scores at week-24 from RA patients receiving TNF-blockers or a placebo after methotrexate (MTX) failure. Methods: A systematic literature review evaluated RCTs of TNFblockers vs. placebo given to patients after MTX failure (10 mg/ week during 6 months), published until October 2015. RA patients were naive to biotherapies. Results: Twenty-two RCTs (out of 1,388) were evaluated: six studied infliximab, five etanercept, four adalimumab, three certolizumab and four golimumab. Thirteen RCTs were available for the ACR 20 score at week-24. The overall placebo effect was 24.7% (CI95% [0.192;0.301] p = 0), the adalimumab one was 26.7% ((CI95% [0.161;0.373]) p = 0.001), certolizumab 16.4% ((CI95% [0.068;0.26]) p = 0), and infliximab 31.9% ((CI95% [0.154;0.485]) p = 0.001). Subgroup analyses showed the i.v. route generated a 31.90% placebo effect vs. 23.30% via the subcutaneous route (95%CI [0.154;0.485] p = 0.001). The placebo ACR-50 response was 10.90% ((CI95% [0.074;0.144]) p = 0) for 14 RCTs: only adalimumab was significant (15.40%, (CI95% [0.026;0.281]) p = 0). The ACR-70 placebo effect was 3.40% (95% (CI [0.019; 0.049]) p = 0) in 13 studies (NS). Conclusions: Even though TNF-blockers had greater efficacy, placebo effect should be considered. Indeed, it is estimated at ~20% even treatment failure. Adalimumab, certolizumab and infliximab had higher placebo effects, as did the i.v route. The greater the stringency of ACR criteria, the more the placebo effect was decreased.
Video-conferencing Telehealth Linkage attempts to Schools to Facilitate Mental Health Consultation.

Objective Telehealth to schools may be a strategic approach to expand child mental health service delivery, however, there are only a few published examples. This report describes video-conferencing telehealth linkage attempts to schools to facilitate mental health consultation. Methods A series of synchronous video-conferencing linkage strategies were attempted to connect a mental health consultation service to multiple schools in a Canadian setting. Consultation to support the implementation of the Daily Report Card, for students with attentional and behavioural problems, was the core content of this pilot linkage attempt. Results Synchronous video conference consultations were successfully delivered to six elementary schools across three school districts. Two of three linkage strategies were functional. One used existing health centre-based telehealth units to connect to school-based dedicated tablets with a video collaboration app and reliance on existing school Wi-Fi. A second used existing laptops in both the health and school system linked through a communication platform. A third connection, using 3G/4G hotspots to obviate the need to access school Wi-Fi, was deemed too expensive in this setting. Conclusion The potential to use existing computer hardware to connect mental health providers and schools could facilitate scale-up. However, it is unknown whether mental health systems and school sectors will invest in such linkages and reorganize core mental health services to be delivered in this way.
The Effects of Additives in Napier Grass Silages on Chemical Composition, Feed Intake, Nutrient Digestibility and Rumen Fermentation

The effect of silage additives on ensiling characteristics and nutritive value of Napier grass (Pennisetum purpureum) silages was studied. Napier grass silages were made with no additive, fermented juice of epiphytic lactic acid bacteria (FJLB), molasses or cassava meal. The ensiling characteristics were determined by ensiling Napier grass silages in airtight plastic pouches for 2, 4, 7, 14, 21 and 45 d. The effect of Napier grass silages treated with these additives on voluntary feed intake, digestibility, rumen fermentation and microbial rumen fermentation was determined in 4 fistulated cows using 4×4 Latin square design. The pH value of the treated silages rapidly decreased, and reached to the lowest value within 7 d of the start of fermentation, as compared to the control. Lactic acid content of silages treated with FJLB was stable at 14 d of fermentation and constant until 45 d of ensiling. At 45 d of ensiling, neutral detergent fiber (NDF) and acid detergent fiber (ADF) of silage treated with cassava meal were significantly lower (p<0.05) than the others. In the feeding trial, the intake of silage increased (p<0.05) in the cow fed with the treated silage. Among the treatments, dry matter intake was the lowest in the silage treated with cassava meal. The organic matter, crude protein and NDF digestibility of the silage treated with molasses was higher than the silage without additive and the silage treated with FJLB. The rumen parameters: ruminal pH, ammonia-nitrogen (NH3-N), volatile fatty acid (VFA), blood urea nitrogen (BUN) and bacterial populations were not significantly different among the treatments. In conclusion, these studies confirmed that the applying of molasses improved fermentative quality, feed intake and digestibility of Napier grass.
Paraquat-mediated selection for mutations in the manganese-superoxide dismutase gene sodA

We report the unexpected result that Escherichia coli isolates containing a multicopy plasmid (pDT1.5) carrying the manganese-superoxide dismutase gene sodA were more sensitive than the wild type to paraquat-mediated growth inhibition. The pDT1.5 locus responsible for the paraquat-sensitive phenotype was delimited to a 0.6-kilobase segment by transposon Tn5 mutagenesis. Moreover, superoxide dismutase activity was the same as in the wild type in strains carrying pDT1.5::Tn5 insertions mapping to the 0.6-kilobase locus. These data identify the 0.6-kilobase segment as the locus of sodA and establish an association between growth inhibition by paraquat and the function of the plasmid-borne sodA gene.
X‐ray high‐resolution vascular network imaging

This paper presents the first application of high‐resolution X‐ray synchrotron tomography to the imaging of large microvascular networks in biological tissue samples. This technique offers the opportunity of analysing the full three‐dimensional vascular network from the micrometre to the millimetre scale. This paper presents the specific sample preparation method and the X‐ray imaging procedure. Either barium or iron was injected as contrast agent in the vascular network. The impact of the composition and concentration of the injected solution on the X‐ray synchrotron tomography images has been studied. Two imaging modes, attenuation and phase contrast, are compared. Synchrotron high‐resolution computed tomography offers new prospects in the three‐dimensional imaging of in situ biological vascular networks.
Dietary minerals, reproductive hormone levels and sporadic anovulation: associations in healthy women with regular menstrual cycles

Abstract Although minerals are linked to several reproductive outcomes, it is unknown whether dietary minerals are associated with ovulatory function. We hypothesised that low intakes of minerals would be associated with an increased risk of anovulation. We investigated associations between dietary mineral intake and both reproductive hormones and anovulation in healthy women in the BioCycle Study, which prospectively followed up 259 regularly menstruating women aged 18–44 years who were not taking mineral supplements for two menstrual cycles. Intakes of ten selected minerals were assessed through 24-h dietary recalls at up to four times per cycle in each participant. Oestradiol, progesterone, luteinising hormone (LH), follicle-stimulating hormone (FSH), sex-hormone-binding globulin and testosterone were measured in serum up to eight times per cycle. We used weighted linear mixed models to evaluate associations between minerals and hormones and generalised linear models for risk of anovulation. Compared with Na intake ≥1500 mg, Na intake <1500 mg was associated with higher levels of FSH (21·3 %; 95 % CI 7·5, 36·9) and LH (36·8 %; 95 % CI 16·5, 60·5) and lower levels of progesterone (−36·9 %; 95 % CI −56·5, −8·5). Na intake <1500 mg (risk ratio (RR) 2·70; 95 % CI 1·00, 7·31) and Mn intake <1·8 mg (RR 2·00; 95 % CI 1·02, 3·94) were associated with an increased risk of anovulation, compared with higher intakes, respectively. Other measured dietary minerals were not associated with ovulatory function. As essential minerals are mostly obtained via diet, our results comparing insufficient levels with sufficient levels highlight the need for future research on dietary nutrients and their associations with ovulatory cycles.