Miracle-dz/UniFAR-FTUs huggingface dataset:
Periodontal and Peri-Implant Microbiome Dysbiosis Is Associated With Alterations in the Microbial Community Structure and Local Stability

Periodontitis and peri-implantitis are common biofilm-mediated infectious diseases affecting teeth and dental implants and have been considered to be initiated with microbial dysbiosis. To further understand the essence of oral microbiome dysbiosis in terms of bacterial interactions, community structure, and microbial stability, we analyzed 64 plaque samples from 34 participants with teeth or implants under different health conditions using metagenomic sequencing. After taxonomical annotation, we computed the inter-species correlations, analyzed the bacterial community structure, and calculated the microbial stability in supra- and subgingival plaques from hosts with different health conditions. The results showed that when inflammation arose, the subgingival communities became less connective and competitive with fewer hub species. In contrast, the supragingival communities tended to be more connective and competitive with an increased number of hub species. Besides, periodontitis and peri-implantitis were associated with significantly increased microbial stability in subgingival microbiome. These findings indicated that the periodontal and peri-implant dysbiosis is associated with aberrant alterations in the bacterial correlations, community structures, and local stability. The highly connected hub species, as well as the major contributing species of negative correlations, should also be given more concern in future studies.
Database Development of Defective and Healthy Alphonso Mangoes

 Abstract—Some of the aspects of maintenance of mango fruit quality during the supply chain are harvesting practices, adequate orchard management practices, postharvest treatments, transportation and storage conditions, packing operation, temperature management and ripening at destination. Since the said area is a newly growing field, very little literature is available on the defect detection of alphonso mango. The quality attributes of alphonso include freedom from external damages such as latex or sap injury and decay, bruises, uniform weight, color, aroma, firmness, shape and size. Postharvest losses are high during the supply chain due to harvesting fruit at improper maturity, sap burn, mechanical damage during the whole chain, spongy tissue, lenticels discoloration, decay, chilling injury, fruit softening and disease and pest damage. The main aim of postharvest treatments and management practices in the supply chain is to create suitable conditions or environments to extend the storage life and retain the quality attributes, nutrition and functional compositions. To retain the overall mango fruit quality and to reduce postharvest losses during supply chain can be achieved by adopting suitable postharvest novel technologies involving image processing and pattern recognition techniques. To achieve this task the researchers in this area needs the database that contains healthy as well as Spongy Tissue affected alphonso mangoes. This paper is an attempt towards the direction to develop such database for the researchers working on the non-destructive techniques for defect detection in mangoes. Keywords—Alphonso Mangoes, Spongy Tissue, digital X-Ray imaging, database of alphonso, Non-Destructive Testing.
Plug-Tray Nursery Raising Technology for Off-Season Cucurbits Cultivation

In India, cucurbits are mainly sown by seeds during their normal season of cultivation. Seedlings of these vegetables can not be raised through traditional system of nursery raising on soil beds, because these vegetables are not tolerate against slightest damage to their root and shoot system during their uprooting and transplanting. This kind of damage can not be avoided in the traditional system of seedling raising, therefore it was not in general practice to transplant these vegetable through seedlings. Thereafter, a method of nursery raising was evolved in which off-season seedlings were raised in small polyethylene bags using soil and compost (50:50) as a media, but this system needs lot of protected space and is labour intensive. During the transportation process the crop in main field needs large quantity of media and does high damage to root system ant it is also not very eco-friendly, therefore, not accepted by growers in India But at the Centre for Protected Cultivation Technology of the Indian Agricultural Research Institute, New Delhi a nursery raising technology for cucurbits had been developed and standardized in which seedlings of major cucurbits are raised in multi-celled plastic plug trays containing each cell of a volume of 18-20 cc and inverted pyramid in shape by using coco-peat, vermiculite and perlite as soil-less media in 3:1:1 ratio on volume basis. This technique is not only efficient in vigorous root development but also suitable to avoid any damage to the roots and shoots of the seedlings at the time of transplanting. This technology is economical and suitable for the cucurbits growers in northern plains of India, because with the introduction of this technique, farmers can grow large number of seedlings as per requirement for off-season cultivation of cucurbits (with various varieties) for fetching high price of their off-season produce. The plug tray nursery raising technology is suitable for Melons, gourds and squashes for their off season cultivation in Northern India. This kind of technology is good option for the agri. entrepreneur by the progressive farmers or unemployed educated youths in major vegetable growing parts of the country.
Wyes and wye nots of three-phase distribution transformer connections

The authors summarize the pros and cons of various three-phase transformer connections. Recommendations are provided regarding the standard types of connections a utility should offer for various service requirements. Consideration is given to warehousing costs, ferroresonance, neutral grounding, core construction, overvoltages, unbalanced loading, zero sequence sources, and through faults. Emphasis is placed on the exchange of information between customer and utility. An application for three-phase service form that can be used to determine service requirements, including voltage, grounded, ungrounded, three-phase load, single-phase load, motor characteristics, and fault current interrupting rating of secondary breakers and switchgear, is provided. It is recommended that a rural electric utility standardize on a limited number of transformer connections to serve three-phase loads. Recommended standard connections include: (1) four-wire service, grounded-wye-grounded-wye; and (2) three-wire service, wye-delta. Suggestions on utility-supplied information such as maximum available three-phase and line-to-ground fault currents are provided, and the operation of ungrounded systems is discussed. <<ETX>>
Analysis and Implementation of a Hybrid DC Converter with Wide Voltage Variation

A new hybrid DC converter is proposed and implemented to have wide voltage variation operation and bidirectional power flow capability for photovoltaic power applications. The hybrid DC converter, including a half- or full-bridge resonant circuit, is adopted to realize the bidirectional power operation and low switching losses. To overcome the wide voltage variation problem (60 V–480 V) from photovoltaic panels due to sunlight intensity, the full-bridge structure or half-bridge structure resonant circuit is used in the presented converter to implement high or low voltage gain under a low or high input voltage condition. Using a pulse frequency modulation (PFM) scheme, the voltage transfer function of the resonant circuit is controlled to regulate the load voltage. Due to the symmetric circuit structures used on the primary and the secondary sides in the proposed converter, the bidirectional power flow can be achieved with the same circuit characteristics. Therefore, the proposed converter can be applied to battery stacks to achieve charger and discharger operations. Finally, a 400 W prototype is implemented, and the performance of the proposed hybrid DC converter is confirmed by the experiments.
Effects of Phosphorus Fertilizer Rates and Its Placement Methods on Residual Soil Phosphorus, Yield, and Phosphorus Uptake of Maize: At Bedele District, Ethiopia

In spitefulness of the increase in land areas under maize production, yield is still low due to declining soil fertility because of un-appropriate use of fertilizer rates and placement methods. Therefore this study was conducted to determine P fertilization rates and the relative effectiveness of different placement methods on the yield, P uptake of maize and concentration of P in the soil. The experiment was carried out at Bedele district. Four level of P fertilizer (0, 23, 46 and 69 P2O5 kgha-1) and three placement methods of P application (broadcasting P and seeds, surface banding P to the side of the seeds, and deep band P fertilizer below the seeds) were implemented as treatments with three replications in randomized complete block design. Dry biomass, grain yield, straw yield, harvest index, residual soil P, and total P in grain were highly significantly (P< 0.01) influenced by effect of P fertilizer rates and placement methods. Total P in the soil significantly (P<0.05) influenced by placement methods. Mean plant height, total N in the grain and total N in the stalks highly significant (P<0.01) influenced by effect of P fertilizer rates and its placement methods. The mean days to maturity highly significantly (P<0.01) influenced only by P fertilizer rates. The highest grain yield (78.40 qt ha-1) and biomass yield (142.11 qt ha-1) were noted from surface banding of P fertilizer to the sides of the seeds at application of 69 P2O5 kg /ha respectively when compared with the no P2O5 application. However, P and N uptakes by Maize ranged from 0.84% with no P2O5 to 1.32% at the rate of 69 kg P2O5 ha-1 and 0.656% with no P2O5 to 1.04% at rate of 69 kg P2O5 ha-1, respectively. Also, the residual soil P after harvest of the maize ranged from 1.312 with no P2O5 to 11.79ppm was recorded at application of 69 kg P2O5 ha-1. Therefore, using surface banding P fertilizer to the sides of the seeds with 69kg P2O5 ha-1 to increase the production of maize over increase the efficiency of P uptake.
Magnetic Field Exposures in the Electric Utility Industry Relevant to Occupational Guideline Levels

Abstract Several organizations have promulgated guidelines for occupational exposure to extremely low frequency magnetic fields. This article analyzes electric utility magnetic field occupational exposure data sets in order to characterize the types of workers, tasks, and environments that are associated with exposure at or near the guideline levels. The frequency and duration of magnetic field exposure of utility workers were examined for five data sets containing over 7000 workdays of measurements. Four of the data sets were from general surveys of worker exposure and the fifth was from a study of workers performing transmission and distribution live-line tasks. For job categories specific to the electric utility industry, exposure above 0.05 millitesla (mT) generally occurred during less than 1.0 percent of time at work and exposure above 0.2 mT generally occurred during less than 0.1 percent of work time. Although most periods of exposure above these magnetic field levels were brief, some lasted sever.
Fuzzy Logic Controller For A Seperately Excited D.C. Motor

The paper describes the application of fuzzy logic to the speed control of d.c. motor. A generallsed rule structure is used to develop change in the control strategy & response for various conditions are discussed. Results indicate that FLC works well even with inaccurate data; Optimum error performance can be obtained by proper selection of quantization levels, sampling interval, etc.
A novel ultrawideband microwave differential phase shifter

Wideband microwave phase shifters are usually constructed using cascaded coupled-fine sections connected together at their far ends. By utilizing the unique frequency-independent quadrature property of symmetric couplers, a new class of phase shifter is proposed. The use of ultrawideband couplers in its realization results in a device which offers greater freedom with respect to bandwidth and ripple. The tendency of symmetrical networks to cancel small errors due to manufacturing tolerances is also exploited in order to improve its high-frequency performance.
Ice detection on wind turbines using the observed power curve

Icing on the blades of a wind turbine can lead to significant production losses during the winter months for wind parks in cold climate regions. However, there is no standard way of identifying ice-induced power loss. This paper describes three methods for creating power threshold curves that can be used to separate iced production periods from non-iced production periods. The first approach relies on a percentage deviation from the manufacturer's power curve. The other two approaches fit threshold curves based on the observed variance of non-iced production data. These approaches are applied to turbines in four wind parks and compared with each other and to observations of icing on the nacelle of one of the turbines in each park. It is found that setting an ice threshold curve using 0.1 quantile of the observed power data during normal operation with a 2-h minimum duration is the best approach for icing identification. The quantile should be fit based on at least 1year of data, and a smoothing function should be applied to the quantile results to remove any outliers caused by limited numbers of data points. Copyright © 2015 John Wiley & Sons, Ltd.
Turbulence modeling for free-surface flow simulations in offshore applications

To study extreme hydrodynamic wave impact in offshore and coastal engineering, the VOF-based CFD simulation tool {ComFLOW} is being developed. Recently, much attention has been paid to turbulence modeling, local grid refinement, wave propagation and absorbing boundary conditions. Here we will focus on the design of the turbulence model, which should be suitable for the coare grids as used in industrial applications. Thereto a blend of a QR-model and a regularization model has been designed, in combination with a dedicated wall model. The QR-model belongs to a class of modern eddy-viscosity models, where the amount of turbulent eddy viscosity is kept minimal. The performance of the model will be demonstrated with several applications relevant to the offshore industry. For validation, experiments have been carried out at MARIN.
Institutionalizing the Electric Warship

The Navy has invested a considerable amount of resources in developing Electric Warship technology in the past twenty years. We have witnessed a number of early technology demonstrations as well as incorporation of Integrated Power System (IPS) technology into ship programs such as LHD 8, T-AKE, DD(X), and CVN 21. Although these early adopters have paved the way for establishing the practice of electric warship design, we are now at a critical point in time for institutionalizing the electric warship. A technology is institutionalized when the following activities have occurred: ▪ Establish a common architecture and interfaces. ▪ Establish a common design processes. ▪ Incorporate the architecture and design processes into design tools. ▪ Codify the practice in government or industry specifications, standards, and guides. ▪ Teach the architecture and design process as part of a typical engineering school curriculum. This article reviews the progress in electric warship technology, describes progress (including ongoing efforts) in institutionalization, and highlights critical near term shortcomings. Some of the shortcomings in design processes and tools include: ▪ Undefined (in authoritative documentation) concepts such as zonal survivability and quality of service. ▪ Obsolete requirement terms such as “sustained speed” and “endurance speed/range” ▪ Conflicting design practices for propulsion and ship service prime mover sizing. ▪ Customized system protection strategies for different classes of ships. ▪ Ambiguous methods for the sizing of zonal distribution system components. ▪ Lack of integration of IPS design algorithms into ship concept tools such as ASSET. ▪ Lack of knowledge as to how to effectively use modeling and simulation to make electric plant design decisions for each stage of ship design. Additionally, the article details progress in updating standards and specifications, such as the Naval Vessel Rules and DOD-STD-1399. Finally, efforts to incorporate Electric Warship design into the curriculum at [RA1] traditional Naval Architecture are described.
Task-dependent switching of feedback controllers

The separation of distinct motor memories by contextual cues is a well known and well studied phenomenon of feedforward human motor control. However, there is no clear evidence of such context-induced separation in feedback control. Here we test both experimentally and computationally if context-dependent switching of feedback controllers is possible in the human motor system. Specifically, we probe visuomotor feedback responses of our human participants in two different tasks – stop and hit – and under two different schedules. The first, blocked schedule, is used to measure the behaviour of stop and hit controllers in isolation, showing that it can only be described by two independent controllers with two different sets of control gains. The second, mixed schedule, is then used to compare how such behaviour evolves when participants regularly switch from one task to the other. Our results support our hypothesis that there is contextual switching of feedback controllers, further extending the accumulating evidence of shared features between feedforward and feedback control.
Potential anti-inflammatory activity of walnut protein derived peptide leucine-proline-phenylalanine in lipopolysaccharides-irritated RAW264.7 cells

ABSTRACT The purpose of this study was to explore the anti-inflammatory mechanism of walnut peptide LPF in the LPS-induced RAW264.7 cells model. The walnut peptide LPF down-regulated the phagocytic ability and the production of nitric oxide (NO) induced by LPS-stimulated RAW264.7. Molecular docking analysis showed that the walnut peptide LPF can bind into the active pocket of inducible nitric oxide synthase (iNOS) with high affinity. Further, the mRNA expression of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and tumour necrosis factor-α (TNF-α) were suppressed by the walnut peptide LPF intervention. Later, we validated the under-expression of INOS protein by western blot. The decreased mRNA expression of IκB-α demonstrated the anti-inflammatory effects of the walnut peptide LPF were related to the regulation of the NF-κB signalling pathway. Our results suggest that the walnut peptide LPF has the potential to be developed as a functional food ingredient against inflammation. GRAPHICAL ABSTRACT
Rating the Authenticity of Websites

Modern browsers have anti-phishing mechanisms implemented. Despite these counter measures the damage done by phishing attacks keeps increasing, with the main reasons being the ease of launching a phishing website and on the other hand the maintenance required to keep blacklists up-to-date. In this paper a different approach will be presented, based on passive and proactive mechanisms to rate the authenticity of a website. The implementation of these mechanisms will be discussed and results will be evaluated. An empirical study shows that the used implementation of this approach rated 89.26% of the tested websites correctly.
Enhanced tunable performance of high Q-factor BaxSr1−xTiO3 film bulk acoustic wave resonators

Emerging intrinsically tunable film bulk acoustic wave(BAW) resonators allow the development of new generation reconfigurable and agile microwave circuits. In this paper, we demonstrate the enhancement of tunable performance of the high Q-factor BaxSr1−xTiO3 BAW – solidly mounted resonators (BAW–SMR) by varying Ba concentration. The Ba0.5Sr0. 5TiO3 BAW–SMR reveal tunability of series resonance frequency up to 2.4%, electromechanical coupling coefficient up to 7.5% and rather high Q-factor, up to 250 at 5.3 GHz. Correlations between the measured electroacoustic parameters are analyzed using the theory of dc field-induced piezoelectric effect in paraelectric phase ferroelectrics. Higher coupling coefficient and tunability of resonance frequency of the Ba0.5Sr0. 5TiO3 BAW–SMR are associated with higher tunability of permittivity. Strong anisotropy in field-induced piezoelectric effect is predicted with highest coupling coefficient in (001) direction of the BaxSr1−xTiO3 films. It is also shown that the tunability of series resonance frequency of Ba0.5Sr0. 5TiO3 BAW–SMR is limited by relatively high and negative nonlinear electrostriction coefficient which is found to be m ≈ −4·1010 m/F. The BAW–SMR Q-factor is limited significantly by extrinsic acoustic loss associated with wave scattering at reflection from relatively rough top interface. The results of analysis show possible ways of further improvement of the performance of tunable BAW–SMR.
Reservoir Rocks Image Binarization: a Comparative Study Between Neural Network Method and Otsu Variance

The determination of physical properties of reservoir rocks is one of the most important tasks in reservoir engineering. These properties can be determined through microscopic image processing of porous media. The big advantage is the low cost and greater speed in obtaining results. Having this background as motivation and inspired by the success of artificial intelligence systems, this work analyzes the results of binarization images of reservoir rocks using histogram-based methods described in the literature and the development of a method of image binarization based on neural networks, which is a specific method for images of reservoir rocks. As a result, binarized images are displayed and their characterization for different binarization methods and the efficiency of the methods evaluated. Binarization using neural networks showed an improvement of 6.8% to 71.0% compared to Otsu Variance.
Comparison of Size Characteristics of Fibers Found on Sample Filters and Cassette Cowls from Personal Samples of Airborne Man-Made Mineral Fibers

Abstract National Institute for Occupational Safety and Health Method 7400 is commonly used to evaluate airborne exposures to man-made mineral fibers (MMMFs). Although recent evidence suggests that current methods for collecting air samples may be biased due to fiber deposition on the inside of the sampling-cassette extension cowl, few data are available on the mechanism of deposition, the number of fibers deposited on the cowl, or potential bias in size selection associated with this deposition. The length and diameter distributions of fiber populations collected on the air-sample filters were compared to those deposited on the inside of the electrically conductive extension cowl. The samples were collected during insulation of residential buildings with pneumatically conveyed loose-fill insulation. Two different filters recommended for sample collection in the World Health Organization Reference Method for MMMFs were used. It was determined that a significantly different fiber-size distribution is deriv.