Miracle-dz/UniFAR-FTUs huggingface dataset:
Study of Antibacterial and Anticancer Properties of bioAgNPs Synthesized Using Streptomyces sp. PBD-311B and the Application of bioAgNP-CNC/Alg as an Antibacterial Hydrogel Film against P. aeruginosa USM-AR2 and MRSA

Here, we report the extracellular biosynthesis of silver nanoparticles (AgNPs) and determination of their antibacterial and anticancer properties. We also explore the efficacy of bioAgNPs incorporated in cellulose nanocrystals (CNCs) and alginate (Alg) for the formation of an antibacterial hydrogel film. Streptomyces sp. PBD-311B was used for the biosynthesis of AgNPs. The synthesized bioAgNPs were characterized using UV-Vis spectroscopy, TEM, XRD, and FTIR analysis. Then, the bioAgNPs’ antibacterial and anticancer properties were determined using TEMA and cytotoxicity analysis. To form the antibacterial hydrogel film, bioAgNPs were mixed with a CNC and Alg solution and further characterized using FTIR analysis and a disc diffusion test. The average size of the synthesized bioAgNPs is around 69 ± 2 nm with a spherical shape. XRD analysis confirmed the formation of silver nanocrystals. FTIR analysis showed the presence of protein capping at the bioAgNP surface and could be attributed to the extracellular protein binding to bioAgNPs. The MIC value of bioAgNPs against P. aeruginosa USM-AR2 and MRSA was 6.25 mg/mL and 3.13 mg/mL, respectively. In addition, the bioAgNPs displayed cytotoxicity effects against cancer cells (DBTRG-0.5MG and MCF-7) and showed minimal effects against normal cells (SVG-p12 and MCF-10A), conferring selective toxicity. Interestingly, the bioAgNPs still exhibited inhibition activity when incorporated into CNC/Alg, which implies that the hydrogel film has antibacterial properties. It was also found that bioAgNP-CNC/Alg displayed a minimal or slow release of bioAgNPs owing to the intermolecular interaction and the hydrogel’s properties. Overall, bioAgNP-CNC/Alg is a promising antibacterial hydrogel film that showed inhibition against the pathogenic bacteria P. aeruginosa and MRSA and its application can be further evaluated for the inhibition of cancer cells. It showed benefits for surgical resection of a tumor to avoid post-operative wound infection and tumor recurrence at the surgical site.
Fully Integrated THz Schottky Detectors Using Metallic Nanowires as Bridge Contacts

This paper investigates fully integrated Terahertz (THz) Schottky detectors using silver (Ag) metallic nanowires (NWs) with 120 nm diameter as bridge contacts for zero-bias operating THz detectors based on highly doped Gallium Arsenide (GaAs) and Indium Gallium Arsenide (InGaAs) layers. The combination of InGaAs and metallic NWs shows improved performance at zero-bias than a GaAs based detector with a simulated capacitance of 0.5 fF and a series resistance of 29.7<inline-formula> <tex-math notation="LaTeX">$\Omega $ </tex-math></inline-formula>. Thus, the calculated maximum cut-off frequency of 2.6 THz was obtained for a NW contacted vertical InGaAs THz detector. Initial THz measurements were carried out using a common THz setup for frequencies up to 1.2 THz. A responsivity of 0.81 A/W and a low noise-equivalent power (NEP) value of 7 pW/<inline-formula> <tex-math notation="LaTeX">$ {~\sqrt {Hz}}$ </tex-math></inline-formula> at 1 THz were estimated using the measured IV-characteristics of the zero-bias NW-InGaAs based THz Schottky detector.
Interpretation of particle number size distributions measured across an urban area during the FASTER campaign

Abstract. Particle number size distributions have been measured simultaneously by scanning mobility particle sizers (SMPSs) at five sites in central London for a 1 month campaign in January–February 2017. These measurements were accompanied by condensation particle counters (CPCs) to measure total particle number count at four of the sites and Aethalometers measuring black carbon (BC) at five sites. The spatial distribution and inter-relationships of the particle size distribution and SMPS total number counts with CPC total number counts and black carbon measurements have been analysed in detail as well as variations in the size distributions. One site (Marylebone Road) was in a street canyon with heavy traffic, one site (Westminster University) was on a rooftop adjacent to the Marylebone Road sampler, and a further sampler was located at Regent's University within a major park to the north of Marylebone Road. A fourth sampler was located nearby at 160 m above ground level on the BT tower and a fifth sampler was located 4 km to the west of the main sampling region at North Kensington. Consistent with earlier studies it was found that the mode in the size distribution had shifted to smaller sizes at the Regent's University (park) site, the mean particle shrinkage rate being 0.04 nm s−1 with slightly lower values at low wind speeds and some larger values at higher wind speeds. There was evidence of complete evaporation of the semi-volatile nucleation mode under certain conditions at the elevated BT Tower site. While the SMPS total count and black carbon showed typical traffic-dominated diurnal profiles, the CPC count data typically peaked during night-time as did CPC∕SMPS and CPC∕BC ratios. This is thought to be due to the presence of high concentrations of small particles (2.5–15 nm diameter) probably arising from condensational growth from traffic emissions during the cooler night-time conditions. Such behaviour was most marked at the Regent's University and Westminster University sites and less so at Marylebone Road, while at the elevated BT Tower site the ratio of particle number (CPC) to black carbon peaked during the morning rush hour and not at night-time, unlike the other sites. An elevation in nucleation mode particles associated with winds from the west and WSW sector was concluded to result from emissions from London Heathrow Airport, despite a distance of 22 km from the central London sites.
Finite Element Design and Multi-objective Optimization of Four Pole Reluctance Motor Based on NSGA-II Intelligent Algorithm

The design of a four-pole reluctance motor with multiple objectives is discussed in this paper using a finite element design methodology based on multi-objective genetic algorithm. Non-dominated genetic algorithm (NSGA-II) is used because of its high performance and intensification in optimization problems. The global sensitivity chart revealed that the motor’s stator pole embrace and yoke thickness are key parameters for the optimization objectives, while the rotor’s pole embrace should be restrained and closely associated with these two key parameters. According to the optimization and sensitivity analysis results, a final design which is superior to the base design was achieved. There were 15 % and 13.2 % improvement in the optimized model in terms of the average torque and efficiency respectively. Also, the optimized model recorded a reduction in the average torque ripple and total loss by 1.55 % and 30.1 % respectively. This demonstrates the NSGA-II intelligent optimization program is a suitable framework to optimize specified objective functions.
Robust Visual Teach and Repeat Navigation for Unmanned Aerial Vehicles

Vision-based navigation is one of the leading tasks in mobile robotics. It, however, introduces additional challenges in long-term autonomy due to its reliance on stable visual features. As such, visual navigation methods are often sensitive to appearance changes and unreliable in environments with low feature density. We present a teach-and-repeat navigation system for unmanned aerial vehicles (UAVs) equipped with a low-end camera. We use a novel visual place recognition methodology based on high-level CNN features to localize a robot on a previously traversed trajectory and to directly calculate heading corrections for navigation. The developed navigation method is fully vision-based and independent of other sensory information, making it universal and easily transferable. The system has been experimentally verified and evaluated with respect to a state-of-the-art ORB2-TaR navigation system. It showed comparable results in terms of its precision and robustness to environmental changes. In addition, the system was able to safely navigate in environments with low feature density and to reliably solve the wake-up robot problem.
Synergistic Effect of Graphite and Carbon Nanotubes on Improved Electromagnetic Interference Shielding Performance in Segregated Composites

Herein, the graphite–carbon nanotube (G-CNT) hybrid loaded ultrahigh molecular weight polyethylene (UHMWPE) composite with a segregated structure was fabricated. In such structure, the G-CNT hybrid was selectively distributed at the interfaces of UHMWPE domains to form interconnected networks, as demonstrated by optical microscopy and scanning electron microscopy. The resultant G-CNT/UHMWPE composite exhibited an excellent electrical conductivity of 195.3 S m–1 and an ultrahigh electromagnetic interference shielding effectiveness (EMI SE) of 81.0 dB. The results were superior to those of single graphite or the CNT loaded one, clearly confirming the synergistic effect of graphite and CNT. Amazingly, only a specimen of 0.5 mm thickness imparted the G-CNT/UHMWPE composite with an EMI SE of 31.8 dB, already matching the requirement for commercial EMI shielding applications. This work highlights the merit of integrating the segregated structure with the synergistic effect of G-CNT hybrid in forming highly cond.
Influence of Arbuscular Fungi Mycorrhiza and Dose Bioactivator (Tablet and Liquid Form) Fermented with Trichoderma spp. Against Growth and Wilt Disease on Soybean

The purpose of this study was to determine the effect of Arbuscular Fungi Mycorrhiza (AFM) and the dosage of bioactivator (tablet and liquid form) fermented with Trichoderma spp. fungus on the growth of soybean and the incident of wilt disease in soybean. The study used Split Plot Design with two factors. As the main plot is AFM which consists of two levels, namely: without AFM and with AFM. As a subplot is a bioactivator (tablet and liquid form) dose consisting of seven levels, ie without bioactivator, 2.5 g bioactivator tablet form/ plant, 5.0 g tablet form / plant, 7.5 g tablet form/ plant, 2.5 ml bioactivator liquid form/ plant, 5.0 ml of liquid form/ plant, and 7.5 ml liquid form/ plant. The treatment was a combination of AFM factor and bioactivator (tablet and liquid form) dose, each repeated three times so that there were 42 experimental units. The results showed that the higher doses of bioactivators tablets and liquid form that accompanied the provision of AFM can increase soybean plant growth and can suppress the incident of wilt disease in soybean.
Learning to Drive at Unsignalized Intersections using Attention-based Deep Reinforcement Learning

Driving at an unsignalized intersection is a complex traffic scenario that requires both traffic safety and efficiency. At the unsignalized intersection, the driving policy does not simply maintain a safe distance for all vehicles. Instead, it pays more attention to vehicles that potentially have conflicts with the ego vehicle, while guessing the intentions of other vehicles. In this paper, we propose an attention-based driving policy for handling unprotected intersections using deep reinforcement learning. By leveraging attention, our policy learns to focus on more spatially and temporally important features within its egocentric observation. This selective attention enables our policy to make safe and efficient driving decisions in various congested intersection environments. Our experiments show that the proposed policy not only outperforms other baseline policies in various intersection scenarios and traffic density conditions but also has interpretability in its decision process. Furthermore, we verify our policy model's feasibility in real-world deployment by transferring the trained model to a full-scale vehicle system. Our model successfully performs various intersection scenarios, even with noisy sensory data and delayed responses. Our approach reveals more opportunities for implementing generic and interpretable policy models in realworld autonomous driving.
Control of Micro- and Mesopores in Carbon Nanofibers and Hollow Carbon Nanofibers Derived from Cellulose Diacetate via Vapor Phase Infiltration of Diethyl Zinc

Common thermoplastic polymers, such as poly(vinyl alcohol) and cellulose derivatives are abundant and inexpensive precursors for preparing carbon nanofibers. These polymers are soluble in common solvents and can be readily processed to prepare nanofibers with high external surface area. However, thermoplastic polymers undergo a melting transition upon heating, resulting in loss of initial morphology and low carbon yield. In this study, vapor infiltration of diethyl zinc (DEZ) is applied to modify electrospun cellulose diacetate (CDA) nanofibers before carbonization, resulting in excellent retention of the original fiber structure while maintaining a high surface area and pore size distribution. Our goal is to investigate the effect of inorganic modification on the morphology and structural properties of the carbon product from the CDA nanofibers. We found that the CDA nanofiber structure was preserved after incorporation of ∼10 wt % Zn by vapor infiltration of DEZ. In addition, we found the pore volume di.
Enhanced thermoelectric performance of Bi-Sb-Te/Sb2O3 nanocomposites by energy filtering effect

Engineering of thermoelectric materials through hybridization with nanoparticles has been proved effective to boost their thermoelectric efficiency by providing the means to decouple thermal and electrical transport phenomena. Here, we report the synthesis of p-type Bi0.5Sb1. 5Te3/X wt% Sb2O3 (X = 0, 1, 2, 4, 6) nanocomposites, in which the Sb2O3 nanoparticles are dispersed mainly at the grain boundaries of the Bi0.5Sb1. 5Te3 matrix. It is shown that incorporation of up to 4 wt% Sb2O3 into the matrix results in simultaneous enhancement of the Seebeck coefficient (by filtering of low energy charge carriers) and decline of thermal conductivity (mainly by charge carrier scattering at the interfaces), both of which contribute to improving the thermoelectric figure of merit to a maximum of 1.51 at 350 K. Moreover, the nanocomposites with 2, 4, and 6 wt% Sb2O3 demonstrate ZT > 1.0 up to 450 K, making them commercially appealing for thermoelectric applications in a wide temperature range. Furthermore, it is shown that Bi0.5Sb1. 5Te3/4 wt% Sb2O3 samples exhibit excellent thermal and chemical stability in ambient atmosphere and 300–475 K temperature range over a 24 month period.
Exposure of French Children and Adolescents to Advertising for Foods High in Fat, Sugar or Salt

Food marketing of products high in fat, sugar and salt (HFSS), including television advertising, is one of the environmental factors considered as a contributor to the obesity epidemic. The main objective of this study was to quantify the exposure of French children and adolescents to television advertisements for HFSS products. TV food advertisements broadcast in 2018 were categorized according to the Nutri-Score of the advertised products. These advertisements, identified according to the days and times of broadcast, were cross-referenced with audience data for 4- to 12-year-olds and 13- to 17-year-olds. More than 50% of food advertisements seen on television by children and adolescents concerned HFSS products, identified as classified as Nutri-Score D and E. In addition, half of advertisements for D and E Nutri-Score products were seen by children and adolescents in the evening during peak viewing hours, when more than 20% of both age groups watched television. On the other hand, during the same viewing hours, the percentage of children and adolescents who watched youth programs, the only programs subject to an advertising ban, was very low (<2%). These results show that the relevance of regulating advertising at times when the television audience of children and adolescents is the highest and not targeted at youth programs, in order to reduce their exposure to advertising for products of low nutritional quality.
Analytical solution for moisture-induced interface delamination in electronic packaging

In this paper a vapor pressure model based a micromechanics approach is introduced fust, with which the moisture absorption and porosity of material, and temperature can he connected. Then the neo-Hookean model is used to describe the fmite-deformation of rubber-lie plastic material at higher temperature. It has been observed that the vapor pressure has almost negligible impact on the material interface properties into the model study, it shows that the delamination at interface is significantly reduced and comparable to the magnitude of vapor pressure. A framework of the description of void-growth at interface is postulated. behaviors in bulk, H~~~~~~, with the implementation of pressure compressive loading On Ihc delamhated &icd stress that results in the unstable void growth and stage, a package and propagates laterally
Comment on “Charge Carrier Extraction in Organic Solar Cells Governed by Steady‐State Mobilities”

The transient photocurrent response to a stepwise decrease in white light-emitting diode (LED) intensity (≈1.0 to ≈0.5 sun) under short-circuit conditions for (a) PTB7:PC71BM and (b) TQ1:PC71BM is shown in Figure 1. For these measurements, we avoid working at bias equal to built-in voltage as promoted by Le Corre et al. since under these “flatband” conditions there is either no driving field or the field is ill-defined. Since diffusion is undirected, in the absence of a driving field there should be no visible current transient—any net current transient at apparent “flatband” conditions must therefore be due to ill-defined remaining electric fields and unknown contact selectivity. For reliability, we have therefore performed our measurements under short-circuit conditions. We have used a larger step size than 1.0–0.9 sun in ref. [17] to obtain a sufficient signal-to-noise ratio in our kMC simulations. The kinetics are independent of step size as stated in ref. [17]. The temporal resolution of our measurement setup was evaluated by measuring the response of a reference Si photodiode (Figure 1a red trace). The temporal resolution of our setup is ≈0.3 μs and similar to the one in ref. [17]. The input pulse driving the LED as well as complementary details on the time resolution of the experiment are included in the Supporting Information. Kinetic Monte Carlo simulations successfully reproduce the experimental data in Figure 1. For TQ1:PC71BM, we use 3D kMC simulation parameters from previous work (Table S1, Supporting Information), where we have successfully fitted several time-resolved experiments spanning the full sub-picosecond to
Uso das Ferramentas APF e COCOMO para Estimativa da Capacidade Produtiva da TI

Estimar a capacidade produtiva da Tecnologia da Informação (TI) para atender ao Planejamento Estratégico da empresa é uma necessidade constante. A TI necessita identificar a sua capacidade produtiva e estimar a necessidade futura de produção de sistemas para conseguir alinhar seus objetivos com os objetivos estratégicos da empresa. Este documento apresenta um relato de experiência da aplicação de um processo de estimativa da capacidade produtiva da TI, tendo como base o planejamento estratégico de uma instituição financeira do governo federal. Na elaboração destas estimativas foram utilizadas as métricas Análise por Pontos de Função - APF e COnstructive COst Model - COCOMO.
Wnt5a protects motor neurons in amyotrophic lateral sclerosis by regulating the Wnt/Ca2+ signaling pathway.

OBJECTIVES We aimed to detect the expression profile of downstream signaling molecules of non-canonical Wnt pathway in SOD1G93A transgenic mice (ALS mice) and SOD1G93A mutant motor neuron-like hybrid (NSC-34) cells. Characterizing the molecular mechanism of the Wnt5a-mediated non-canonical Wnt/Ca2+ signaling pathway in motor neuron (MN) degeneration may provide a feasible approach to effective treatment of amyotrophic lateral sclerosis (ALS). METHODS The expressions of CaMKII-α, CaMKII-β and TAK1 in the spinal cord of SOD1G93A ALS transgenic mice at different ages were determined using western blotting and immunofluorescence. The level of Ca2+ and cell apoptosis were assessed with flow cytometry and cell viability was evaluated using MTS assay. Cell proliferation was analyzed by the EdU cell proliferation assay. Neurite length was measured after treatment with retinoic acid. RESULTS CaMKII-α, CaMKII-β, and TAK1 were down-regulated in the spinal cord of ALS mice. Ca2+ level and CaMKII-α, CaMKII-β, and TAK1 were down-regulated in SOD1G93A mutant NSC-34 cells. Expression of Ca2+, CaMKII-α, CaMKII-β, and TAK1 were up-regulated in SOD1G93A mutant NSC-34 cells after Wnt5a overexpression and down-regulated after Wnt5a knockdown. Overexpression of Wnt5a promoted cell viability and proliferation but inhibited cell apoptosis. Contrastingly, Wnt5a knockdown inhibited cell viability and proliferation but promoted cell apoptosis. CaMKII inhibitor KN-93 and CaMKII activator oleic acid reversed changes in cell viability, proliferation, apoptosis, and neurite outgrowth induced by Wnt5a overexpression and knockdown. CONCLUSIONS This study demonstrates that Wnt5a protects MNs in ALS by regulating cell viability, proliferation, apoptosis, and neurite growth through the Wnt/Ca2+ signaling pathway. Our data indicate that the non-canonical Wnt/Ca2+ signaling pathway regulated by Wnt5a is involved in MN degeneration in ALS.
Effect of crop and residue type on nitrous oxide emissions from rotations in the semi-arid Canadian prairies

Abstract: Crop rotations on the Canadian prairies commonly include sequences of pulses, oilseeds, and cereals; however, limited information is available regarding the influence that different crop types and sequences may have on direct nitrous oxide (N2O) emissions. A 3 yr field study was conducted on a site near Scott, SK, to compare N2O emissions from selected crop phases of rotations containing pea (Pisum sativum L.), wheat (Triticum aestivum L.), and canola (Brassica napus L.) and to examine the potential influence of these residues on N2O emissions during the subsequent crop phase. Nitrous oxide losses from N-fertilized canola or wheat crops were generally higher than losses from pea or the control treatments. Nitrous oxide losses from N-fertilized wheat or canola crops grown on pea residue were comparable or lower than losses from N-fertilized wheat or canola crops grown on wheat residues. Cumulative N2O loss over the 3 yr was significantly higher from N-fertilized wheat grown on canola compared with pea or wheat residues. Losses from wheat grown on canola residue were 67% and 56% higher than from wheat grown on pea or wheat residue, respectively. This indicates that the emission factors used to estimate direct N2O loss may need to be adjusted upwards for N-fertilized crops grown on canola compared with wheat or pea residues.