Miracle-dz/UniFAR-FTUs huggingface dataset:
Monitoring the Shelf-Life of Minimally Processed Fresh-Cut Apple Slices By Physical - Chemical Analysis and Electronic Nose

Fresh-cut apples, in slices or in cubes, are minimally processed products, which are currently collecting a great interest by fruit marketers for their promising diffusion. Their shelf life, from a microbiological point of view, has been fixed about 2 or 3 weeks under refrigeration. However in a few days they undergo biochemical degradations with production of off-flavors and texture breakdown. In this work, the change of aromatic fingerprint of apple slices packaged in air and in a modified atmosphere (with 100% N2) and stored at 4°C was measured, by using a commercial electronic nose. The obtained data were also compared with sensory evaluation of judge’s panel. Moreover, quality parameters such as total acidity, total soluble solids and firmness were determined at different storage times (0, 4, 8 and 12 days). The data show that the electronic nose is able to discriminate between the two different storage conditions applied: the multivariate analysis, Principal Component Analysis, presents clearly differences among the four sampling times when the apple slices are stored in air and in N2. Our results indicate that the electronic nose can be considered a valid supplementary tool to human sensory panel assessment especially in food quality safety and control and it can be a simple, objective and rapid method to control the food quality during the storage.
Design of Middle-Small Enterprise Technology Service Information System

Aim to build a good service environment in public technical network and create a opportunity for middle-small enterprise developing and growing, a technology service information system (MSETSIS) is designed, according to the characteristics and requirements of middle-small enterprise. Main content, modules and performance of MSETSIS are systematic exposited; middle-small enterprise technology service information system includes four service functions, and they are divided into 19 sub modules, and the main modules are introduced in detailed. In order to improve the efficiency in selecting and optimizing manufacturing resources, genetic algorithm is used in MSETSIS. The design method has been successfully applied to the practical system, and proved the feasibility of the design.
GC-MS analysis of phytoconstituents from Ruellia prostrata and Senna tora and identification of potential anti-viral activity against SARS-CoV-2

SARS-CoV-2 is an etiologic agent responsible for the coronavirus disease 2019 (COVID-19) pandemic. The virus has rapidly extended globally and taken millions of lives due to the unavailability of therapeutics candidates against the virus. Till now, no specific drug candidates have been developed that can prevent or treat infections caused by the pathogen. The main protease (Mpro) of the SARS-CoV-2 plays a pivotal role in mediating viral replication and mechanistically inhibition of the protein can hinder the replication and infection process of the virus. Therefore, the study aimed to identify the natural bioactive compounds against the virus that can block the activity of the Mpro and subsequently block viral infections. Initially, a total of 96 phytochemicals from Ruellia prostrata Poir. and Senna tora (L.) Roxb. plants were identified through the gas chromatography-mass spectrometry (GC-MS) analytical method. Subsequently, the compounds were screened through molecular docking, absorption, distribution, metabolism, excretion (ADME), toxicity (T), and molecular dynamics (MD) simulation approach. The molecular docking method initially identified four molecules having a PubChem CID: 70825, CID: 25247358, CID: 54685836 and, CID: 1983 with a binding affinity ranging between −6.067 to −6.53 kcal mol−1 to the active site of the target protein. All the selected compounds exhibit good pharmacokinetics and toxicity properties. Finally, the four compounds were further evaluated based on the MD simulation methods that confirmed the binding stability of the compounds to the targeted protein. The computational approaches identified the best four compounds CID: 70825, CID: 25247358, CID: 54685836 and, CID: 1983 that can be developed as a treatment option of SARS-CoV-2 disease-related complications. Although, experimental validation is suggested for further evaluation of the work.
Design and performance of small printed antennas

Electrically small microstrip patches incorporating shorting posts are thoroughly investigated. These antennas are suitable for mobile communications handsets where limited antenna size is a premium. Techniques to enhance the bandwidth of these antennas are presented and performance trends are established. From these trends, valuable insight to the optimum design, namely broad bandwidth, small size, and ease of manufacturing, is given.
A mixture of innate cryoprotectants is key for cryopreservation of a drosophilid fly larva

1 Institute of Entomology, Biology Centre, Czech Academy of Sciences, České Budějovice, Czech Republic 2 Czech Centre of Phenogenomics, Institute of Molecular Genetics, Czech Academy of Sciences, Vestec, Czech Republic 3 Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic 4 Crop Research Institute, Praha, Czech Republic # Current Address: Agriculture and Agri-Food Canada, Harrow Research and Development Centre, Harrow, Ontario, Canada
HYDRODYNAMIC MODELING OF FLOW OVER DIFFERENT TYPE OF STEPPED SPILLWAY

The potential energy over the spillway has high discharge. This potential energy converts itself into kinetic energy when it starts flowing over the spillway, and fail downstream of the dam. Therefore it is very much essential to dissipate the kinetic energy to minimize the damage. In recent time lot of works are being done to improve the energy dissipation over the conventional type of spillways. In this research, investigate energy dissipation stepped spillways of different step shapes were considered. Physical wooden models were fabricated in the Bharati Vidyapeeth University, college of engineering. Three different shapes of the steps were reproduces such as; i) a step with 4 cm raise, 4 cm tread and 30 cm wide, ii) a step with 4 cm raise, 5 cm tread and 30 cm wide (adverse slope) and iii) a step with 4 cm raise, 5 cm tread and 30 cm wide (end sill) Experiments have been carried out for different conditions such as horizontal steps, end sill steps with thickness of 1 cm and steps with bottom adverse slope of 1:4. Overall, 180 experiments were done, the hydraulic parameters of flow over the model were measured and the energy dissipation of flow were calculated. From the results, it is clear that, energy loss is more in adverse slope and end sill experiments as compared to the horizontal step spillway, which is in conjunction with the general understanding.
Analyzing the Scientific Community Focused on Nursing Informatics Using Publication Data

The scientific community focused on nursing informatics can be described as a graph with the authors as vertices and the author-coauthor relationship as the connecting edges. Methods to describe and analyze networks like average path length, diameter, centrality measures, or partitioning into subcommunities are applied to the nursing informatics community. It is shown that the community consists of one large connected subnet with many small disjoint subnets, each representing one or several authors. The interconnectivity of the large subnet is quite high indicating an information flow along several different paths. Using different centrality measures important authors for e.g. the information flow can be identified. While each small disjoint subnet represents a small sub-community, the large central subnet can also be partitioned into subcommunities connected with each other. Some seem to be focused on specific aspects of nursing informatics.
Wireless Transfer of Electricity in Outer Space

Author offers conclusions from his research of a revolutionary new idea - transferring electric energy in the hard vacuum of outer space wirelessly, using a plasma power cord as an electric cable (wire). He shows that a certain minimal electric currency creates a compressed force that supports the plasma cable in the compacted form. A large energy can be transferred hundreds of millions of kilometers by this method. The required mass of the plasma cable is only hundreds of grams. He computed the macroprojects: transference of hundreds kilowatts of energy to Earth Space Station, transferring energy to the Moon or back, transferring energy to a spaceship at distance 100 million of kilometers, the transfer energy to Mars when one is located at opposed side of the distant Sun, transfer colossal energy from one of Earth's continents to another continent (for example, between Europe-USA) wirelessly-using Earth ionosphere as cable, using Earth as gigantic storage of electric energy, using the plasma ring as huge MagSail for moving of spaceships. He also demonstrates that electric currency in a plasma cord can accelerate or brake spacecraft and space apparatus.
Design of dual-monopole slots antenna integrated with monopole strip for wireless wide area network mobile handset

An internal antenna for penta-band wireless wide area network (WWAN 824–960/1710–2170 MHz) operation in the mobile handset is presented. By integrating two monopole slots with a monopole strip printed on the top portion of the main circuit board, the monopole slots generate their quarter-wavelength slot modes for the antenna's lower band, whereas the monopole strip can contribute quarter-wavelength resonant modes for the antenna's upper band. The monopole strip serves as a feed for the monopole slots and also functions as an efficient radiator. In this case, the antenna can provide two wide operating bands (795–1035/1700–2205 MHz) to cover the penta-band WWAN operation.
Study on Multi-Track Wireless Communication and Laser Detection Device over the Line

This paper studied the transmission of the athletics starting signal and the end signal detection over the line in track and field competition. At the starting point, 433MHz wireless transmitter module coded and sent the start signal. In the race finish line, the laser device detected athletes signal over the line. The system used an embedded Microsoft Visual Basic 6.0 serial communication control to achieve a reasonable upper and lower computer hardware and software online. Experiments show that: The combination system of hardware and software control applies wireless communication technology and laser detection devices to avoid interference with normal visible light. It has many advantages of a timing accuracy, fast and accurate arrangement of athletes.
Millennials and their attitudes to the corporate social responsibility of global brands: The case study of Slovak Republic

Research background: In addition to their economic activities, global brands applying the concept of corporate social responsibility are also focused on social and environmental aspects. At the same time, they emphasize that these interests are not in conflict, on the contrary, they can work together to increase the efficiency of brand strategy. The basis for the application of corporate social responsibility is the fact that customers are becoming more and more sensitive to other activities of the brand and not just to sales. Especially, one generation of consumers, Millennials, is considered to be the driving force behind the demand for socially responsible brands and products. Purpose of the article: The main aim of the paper is to determine the attitudes of Millennials to the corporate social responsibility of global brands. This includes providing the theoretical background and analysis of the corporate social responsibility from the viewpoint of Slovak and foreign authors. Methods: General scientific methods were applied for the processing of the data as well as mathematical-statistical methods to evaluate the data collated from the results of the questionnaire survey and to statistical hypothesis testing. The important source for secondary data was scientific researches, annual companies reports, statistical databases, published professional publications. In order to found out the attitudes of Millennials to the corporate social responsibility of global brands, a questionnaire survey was conducted among Slovak consumers. Findings & Value added: Based on the analysis and results of the questionnaire survey, benefits of the application of corporate social responsibility in the marketing strategy of global brands are highlighted such as gaining competitive advantage, increasing the brand value and improving brand image.
Performance improvements of interleaving VRMs with coupling inductors

The multichannel interleaving buck converter with small inductance has proved to be suitable for voltage regulator modules (VRMs) with low voltages, high currents, and fast transients. Integrated magnetic components are used to reduce the size of the converter and improve efficiency. However, the structure of the integrated magnetic requires precise adjustment and is not mechanical stable. This paper proposes integrated coupling inductors between the channels to solve these problems. With the proper design, coupling inductors can improve both the steady-state and dynamic performances of VRMs with easier manufacturing.
Perfusion culture of mammalian cells in microfluidic environments for tissue engineering applications

Bioreactors composed of microstructured PolyDiMethylSiloxane (PDMS) have been fabricated for perfusion culture of various mammalian cells.During the perfusion culture in the bioreactors for one week to two weeks, cells showed good attachment, spreading and reached their confluence over the microchannels of the bioreactors.In addition, cellular productions measured during the culture demonstrated the cell functionality.Although the cellular activity of the cells in culture are still low even compared to in vivo tissue, the conclusions of this work are encouraging toward future tissue engineering based on in vitro propagation and maturation of cells combined with microfabrication technologies.
Crime rates and contextual characteristics: a case study in Connecticut, USA

There is a long-standing interest in the spatial relationship between contextual characteristics and crime rates in the U.S. since such a relationship allows police and stakeholders to design crime prevention programs to better target areas at risk for crime. The objective of this research is to examine the relationships between violent/property crime rates and contextual characteristics at the county-subdivision level in the State of Connecticut. The analysis shows that predictors such as population density, type of housing, education, poverty, and racial/ethnic diversity are significantly associated with violent and property crime rates. The results are discussed in the context of different crime hypotheses, which can explain spatial variations in crime rates. Most importantly, the association between crime rates and the explanatory variables in this study significantly varied over space, highlighting that different crime prevention policies/programs should be implemented in different county subdivisions in Connecticut.
Teaching magnetic properties of matter: Discovery labarotary approach

The aim of this study was to construct a laboratory activity about magnetic properties of matter based on Discovery Laboratory Approach (DLA) and to investigate its effectiveness based on student opinions and observations. The study was conducted with sixteen freshman students in primary science education department. The study was utilized the case study approach and document analysis methods, in this process observation and interview forms were used in order to collect data. The DLA activities were performed with “Experiment worksheets” consecutively previously, during and after the laboratory discussions took place. Also, students’ behaviors were determined while conducting the worksheet. Finally interviews were conducted with the students about the effectiveness of the activity. It is concluded that the DLA approach is an effective way of teaching science concepts.
A novel RFID‐HIS‐PRS reader antenna for the millimeter wave band 30 GHz

The use of radio frequency identification (RFID) at millimeter waves has led new applications such as high data rate short range communication, location sensing through narrow‐beam antennas, and so forth. In this article, we present the design of an antenna operating in Ka band for RFID applications based on metamaterials. The frequency band of around 30 GHz, allowing a spectral width of 5 GHz, is a possible solution for the integration of radio frequency devices specially a notched patch antenna at 30 GHz with coplanar feed was designed and characterized. The measurements made with the HP 8510p XF network analyzer are consistent with the simulations using the electromagnetic simulation software CST‐MW Studio. On this antenna, we used primarily a high impedance surface (HIS) to prohibit the propagation of waves. A partially reflective surface layer is added to this HIS‐antenna to increase its directivity and widen the bandwidth. The latter has −25 dB of insertion loss with an impedance bandwidth of 1 GHz and a gain of 14.3 dB at 30 GHz. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1835–1842, 2015
Performance of supplementary irrigation systems for corn silage in the sub-humid areas

In the humid and sub-humid areas, agricultural production is largely rain fed and this needs to be urgently supplemented by irrigation practice if the country is to meet its food demand. A two years study was carried out at the experimental site of the Institute of Agricultural Technology and Biosystems Engineering, Johan Heinrich von Thunen Institute (vTI), Braunschweig, Germany to compare performance of maize crop for silage production using three different irrigation systems; rain fed, drip and rain-gun sprinkler. Growth parameters such as plant height, stem diameter were measured. The total yields of silage were obtained for all treatments at the harvesting. The experimental results reveal that total yields obtained from different treatments were 25.76, 24.23 and 9.30 Mg ha -1 in drip, rain-gun and rain fed irrigated maize, respectively. The results also showed that the water use efficiency reached 11.01 kg m -3 for drip irrigation in while it was 8.84 kg m -3 for rain-gun system. Keywords: Silage, performance, drip, rain-gun, rain-fed irrigation, water use efficiency Normal 0 false false false EN-US X-NONE AR-SA /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:. 0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Calibri","sans-serif";}
The Pilot Design of MIMO-OFDM System

There is MAI(multiple access interference) both inside and outside the cell in the multiple access system,which greatly limits the property of the channel estimation.Different approaches of pilot design often lead to different results of channel estimation and directly affect the MSE(mean squared error). But the use of optimal pilot sequences can eliminate the MAI in the cell.This paper presents a approach of optimal pilot design in the MIMO-OFDM system, aiming at the function of MMSE of the LS channel estimation.The approach can eliminate the MAI in the cell and the simulation results reveals that it can truely do that.
Effects of antenna orientation on GPS carrier phase

The observed carrier phase in the Global Positioning System depends on the orientation of the antennas of the transmitter and the receiver as well as the direction of the line of sight. Two equivalent analytic formulas are derived for the correction based on the property of circularly polarized wave. The magnitude of the correction is evaluated with a simulation. Result from a GPS experiment is shown for the effect of the phase correction. A general formula useful for qualitative evaluation of the differenced measurements is given in terms of the solid angles subtended at the center of the earth by the receivers and transmitters involved.
Multilayer coplanar waveguide for high speed digital applications

The authors present measurements of pulse distortion, coupling, and loss due to discontinuities of the coplanar waveguide (CPW) on single and multilayer structures. The CPW compares favorably to the microstrip line in terms of low coupling and distortion. A novel metal-backed coplanar waveguide on a multilayer structure is introduced to minimize or eliminate pulse distortion due to overmoding. The new CPW structure also has the advantage of relatively low loss at discontinuities. For a T circuit, the loss per bend in the new structure was about 0.2 dB less than a similar microstrip line. <<ETX>>
A Review on the Thermal Characterisation of Natural and Hybrid Fiber Composites

The thermal stability of natural fiber composites is a relevant aspect to be considered since the processing temperature plays a critical role in the manufacturing process of composites. At higher temperatures, the natural fiber components (cellulose, hemicellulose, and lignin) start to degrade and their major properties (mechanical and thermal) change. Different methods are used in the literature to determine the thermal properties of natural fiber composites as well as to help to understand and determine their suitability for a certain applications (e.g., Thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and differential mechanical thermal analysis (DMA)). Weight loss percentage, the degradation temperature, glass transition temperature (Tg), and viscoelastic properties (storage modulus, loss modulus, and the damping factor) are the most common thermal properties determined by these methods. This paper provides an overview of the recent advances made regarding the thermal properties of natural and hybrid fiber composites in thermoset and thermoplastic polymeric matrices. First, the main factors that affect the thermal properties of natural and hybrid fiber composites (fiber and matrix type, the presence of fillers, fiber content and orientation, the treatment of the fibers, and manufacturing process) are briefly presented. Further, the methods used to determine the thermal properties of natural and hybrid composites are discussed. It is concluded that thermal analysis can provide useful information for the development of new materials and the optimization of the selection process of these materials for new applications. It is crucial to ensure that the natural fibers used in the composites can withstand the heat required during the fabrication process and retain their characteristics in service.
Numerical and Experimental Evaluation of Structural Changes Using Sparse Auto-Encoders and SVM Applied to Dynamic Responses

The present work evaluates the deep learning algorithm called Sparse Auto-Encoder (SAE) when applied to the characterization of structural anomalies. This study explores the SAE’s performance in a supervised damage detection approach to consolidate its application in the Structural Health Monitoring (SHM) field, especially when dealing with real-case structures. The main idea is to use the SAE to extract relevant features from the monitored signals and the well-known Support Vector Machine (SVM) to classify such characteristics within the context of an SHM problem. Vibration data from a numerical beam model and a highway viaduct in Brazil are considered to assess the proposed approach. In both analyzed examples, the efficiency of the implemented methodology achieved more than 99% of correct damage structural classifications, supporting the conclusion that SAE can extract relevant characteristics from dynamic signals that are useful for SHM applications.