Miracle-dz/UniFAR-FTUs huggingface dataset:
SUSTAINABLE ENTREPRENEURSHIP: AN APPROACH FROM BIBLIOMETRIC ANALYSIS

Researchs on issues of Sustainable Entrepreneurship are gaining traction in recent years, with this trend being aligned to the achievement of sustainable development goals set by the UN in 2030. The purpose of this paper is to carry out a bibliometric analysis on research on the subject of sustainable entrepreneurship. The information gathered is extracted from the main collection of the Web of Science (WoS) database since 1999 up to December 2019. Nvivo and VOSviwer software are used to perform initial analysis and citation analysis, co-citations, bibliographic coupling, coauthoring, among others. This study presents advances associated with the main authors, journals and countries, the general and annual citation structure and the development of this field. The results show that the publication trend increases from 2015 onwards, however 2018 and 2019 have seen the greatest production of articles. In relation to the most influential countries, the Netherlands, the United States, Germany, England and Spain are the most representative. It was also found that the most influential journals are the Journal of Cleaner Production and Sustainability. The main contribution is to show the evolution of this topic, so that researchers can use it in their theoretical frameworks and research.
Immobilization of copper sulfide flotation tailings through the use of geopolymers, Tacna – Perú.

Currently, mining-metallurgical industrial activities generate significant amounts of mining tailings, and innovative environmentally friendly methods are required for their final disposal or sustainable immobilization. The objective of the study was to immobilize copper sulphide flotation tailings through the geopolymerization process. The samples were obtained from the Toquepala mining unit, - Tacna (Peru), the ash from the ENGIE-Moquegua hydroelectric plant. The results in the first phase of the characterization of the ash (FA) and the mining tailings (MT) through the chemical analysis EDX, mineralogical DRX and morphological SEM, show aluminosilicate content, in the second phase the mixtures of 55% MT, 37, 5% FA and 7.5% MK activated at 10 M at 35 days of curing, demonstrated resistance of 24.6 Mpa according to mechanical resistance tests, the mixture of 100% MT activated at 10 M at 35 days of curing, it is effective by itself for the formation of the geopolymer, obtaining resistances of 22.68 Mpa, the SEM analysis demonstrated formation of tetragonal structures typical of a geopolymer, the TCLP analysis demonstrated a significant reduction of the contaminating elements Ba, Cd, Cr, Pb, opening a new field for tailings treatment.
An analysis of the spatial homogeneity of a photodetector surface in an infrared image converter using the fractal dimension

Abstract This paper analyses the spatial homogeneity of a large-diameter (100 mm) photodetector surface realized by recording the spatial distribution of the gas discharge light emission (DLE) in an ionization-type infrared image converter (ITIIC) with a GaAs photodetector. Analysis of the surface homogeneity is determined by the fractal dimension of the gas DLE when a current is passed through a converter cell. A fractal dimension estimation is found to be a powerful method because it enables both a non-destructive testing facility and use of the whole surface area of the photodetector surface in three dimensions. The effect on the roughness of the photodetector surface through plasmachemical processes at different experimental conditions was established. The effectiveness of the desorption process is proportional to the densities of bombarding particles as well as the stream of desorpted particles leaving the cathode surface. The surface images of the etched photodetector are analysed using both the profile and spatial distribution DLE intensity data showing the surface inhomogeneity in the photodetector plate. It is quantitatively concluded that plasma etching at certain experimental conditions can cause an improvement in surface homogeneity of the photodetector and spatial distribution DLE in an ITIIC.
Una revisión sobre indicadores integradores para evaluar el impacto de las sustancias húmicas sobre el sistema suelo-agua de lixiviación (I) A review about the impact of humic substances on lixiviation of water- soil system (I)

The literature review is aimed at the subject of the effect of humic substances application on the physical, physico- chemical and biological soil and leachate. It is aimed at, with regard to the search for integrative indicators that provide early detection of the status of soil-water system, evaluating potential impacts of natural materials with high organic humic nature primarily in this long- term use in produc- tion systems, specifically in agroecosystems with ferralitic composition floors. The following aspects, are referred as more sensitive indicators in the soil- water leaching evaluation: the content and characterization of soil organic matter and the dissolved in water and humic fractions, content of microorganisms and their biological activity, electrical conductivity, moisture soil cation and anion content, pH, base exchange capacity, sodium absorption ratio, biochemical oxygen demand, chemical oxygen demand, dissolved oxygen, all which can be integrated in a multidisciplinary procedure.
Diatoms in Hyporheic Sediments Trace Organic Matter Retention and Processing in the McMurdo Dry Valleys, Antarctica

In low‐nutrient streams in cold and arid ecosystems, the spiraling of autochthonous particulate organic matter (POM) may provide important nutrient subsidies downstream. Because of its lability and the spatial heterogeneity of processing in hyporheic sediments, the downstream transport and fate of autochthonous POM can be difficult to trace. In Antarctic McMurdo Dry Valley (MDV) streams, any POM retained in the hyporheic zone is expected to be derived from surface microbial mats that contain diatoms with long‐lasting silica frustules. We tested whether diatom frustules can be used to trace the retention of autochthonous POM in the hyporheic zone and whether certain geomorphic locations promote this process. The accumulation of diatom frustules in hyporheic sediments, measured as biogenic silica, was correlated with loss‐on‐ignition organic matter and sorbed ammonium, suggesting that diatoms can be used to identify locations where POM has been retained and processed over long timescales, regardless of whether the POM remains intact. In addition, by modeling the upstream sources of hyporheic diatom assemblages, we found that POM was predominantly derived from N‐fixing microbial mats of the genus Nostoc. In terms of spatial variability, we conclude that the hyporheic sediments adjacent to the stream channel that are regularly inundated by daily flood pulses are where the most POM has been retained over long timescales. Autochthonous POM is retained in hyporheic zones of low‐nutrient streams beyond the MDVs, and we suggest that biogenic silica and diatom composition can be used to identify locations where this transfer is most prevalent.
First report on Basidiomycota fungi in sorghum and millet from Southwest Nigeria

Trametes species are mushroom fungi with several biotechnological applications. This includes decolourisation of wastewater from olive mill and elimination of endocrine-disrupting hormones. This study reports the presence of two Trametesspecies, namely Trametespolyzona and Trametesvillosa from the phylumBasidiomycota in sorghum and milletvended inSouthwest Nigeria. These fungal isolates were identified culturally and further identified through phylogenetic characterisation. Trametessp occurred in 10% of sorghum samples and 20% of millet samples. The two species were morphologically similar but distantly related phylogenetically. Most fungal species present in cereal crops belong to the division Ascomycota. However, two Trametesspecies belonging to division Basidiomycota are being reported for the first time in cereal crops. Trametessp can be harnessed for their health benefits such as the treatment of cancer and the reduction of viral activity in humans.
System-objective representation of conceptual knowledge with description logic

The paper describes the possibilities of applying the system-object approach “Unit-Function-Object” in terms of descriptive logic for describing conceptual knowledge. Conceptual knowledge is represented using a hierarchy of conceptual systems. The syntax and semantics of the descriptive logic ALCOIQ and SHOIQ were described. These allow us to justify the structure of the hierarchy of class systems and the mandatory implementation of the principle of monocentrism for conceptual systems. The concepts of “volume” and “content” of systems-classes were introduced. The results allow us to improve the existing ways of presenting conceptual knowledge, as well as develop models of conceptual knowledge that reflect the systemic reality that exists when solving classification problems.
Research of the influence of optical fibers structure on the spectral characteristics of Mandelstam – Brillouin scattering

Influences of structures of optic fibers, fiber types and the dopant concentration, composition, number and thickness of layers on the characteristics of Mandelstam – Brillouin backscattering are discussed. Results of modeling and experimental tests for different types of optic fibers are presented. The comparative analysis of the obtained results is carried out.
INTEGRATED NUTRIENT MANAGEMENT IN Andrographis paniculata INTERCROPPED IN PONGAMIA BASED AGRI- SILVI SYSTEM

An experiment entitled “Integrated nutrient management in Andrographis paniculata (Kalmegh) intercropped in Pongamia based AgriSilvi system” was conducted during Kharif 2013 in sandy loam soils at Students farm, College of Agriculture, Rajendranagar, Hyderabad which is geographically situated at 17 19 N latitude, 78 28 E longitude at an altitude of 542.3 m above mean sea level, under Southern Telangana agro climatic zone of Andhra Pradesh. The experiment was laid out in randomized block design with eight treatments namely T1 Control, T2 100% RDF (75:50:50 NPK), T3 Farm yard manure @ 5 t ha, T4 Vermicompost @ 2 t ha, T5 Neem cake @ 1 t ha, T6 50% RDF + 50% Farm yard manure, T7 – 50% RDF + 50% Vermicompost, T8 – 50% RDF + 50% Neem Cake replicated thrice. The morphological growth characters of Andrographis paniculata such as plant height, leaf area and dry matter production were maximum with the application of 50% RDF + 50% Neem Cake over the other treatments at all stages of crop growth. Yield and yield attributes were significantly influenced by integrated nutrient management treatments. Number of pods plant, seeds pod, fresh and dry herbage yield of Andrographis paniculata was significantly higher with 50% RDF + 50% Neem Cake over Control followed by 50% RDF + 50% Vermicompost. Fresh and dry herbage yield 2968.9 and 2078.2 kg ha was recorded in 50% RDF +50% Neem cake compared to 1386.6 and 970.6 kg ha in control. PAR values did not vary significantly due to integrated nutrient management treatments. Effect of integrated nutrient management treatments on soil chemical properties such as OC, EC and pH was found non significant. Available N content was significantly higher in all treatments than control. However, 50% RDF + 50% Neem Cake showed higher levels of available N than 50% RDF + 50% Vermicompost. Available P and K content were found to be higher in all the treatments compared to control and initial values. However, 50% RDF + 50% Neem Cake showed higher levels of available P and K contents than 50% RDF + 50% Vermicompost. Significantly higher nitrogen, phosphorous and potassium uptake by the Andrographis paniculata was recorded with 50% RDF + 50% Neem Cake followed by 50% RDF + 50% Vermicompost which was significantly higher than control. Highest gross ( 49179), net returns ( 25229) and higher B: C (2.05) ratio were recorded in 50% RDF + 50% Neem Cake and followed by 50% RDF + 50% Vermicompost (1.97).
Eventually consistent distributed ledger despite degraded atomic broadcast

The distributed ledger or blockchain technologies originated from the Bitcoin have been rapidly widespread in recent years. However, it also gives incentive to malicious users who would like to break the system or take advantage of it (steal money, hide some information stored in the ledger, isolate a particular node from the rest of the network, and so forth). Thus, research focusing on overcoming potential attacks to distributed ledgers is required. In this article, we focus on attacks that damage underlying networks of distributed ledgers. Underlying networks offer useful communication primitives such as an atomic broadcast, however, such attacks may degrade the property of the primitives and make distributed ledgers relying on the primitives no longer work. Hence we should design algorithms to make the distributed ledgers still work even when some attacks degrade the primitives. As the first study for such situations, we consider a problem to implement distributed ledgers tolerating the degradation of an underlying atomic broadcast service that distributed ledgers are relying on. We consider the case where the uniform agreement property of the atomic broadcast is degraded, and propose new algorithms that could ensure to reach eventual consistency despite degraded atomic broadcast.
Zugangswege Hüftendoprothetik – anterolateraler Zugang in Rückenlage

Als minimalinvasiver Zugang wurde der anterolaterale Zugang Ende des 20. Jahrhunderts neu entdeckt. Jerosch et al. [4] prägten den Begriff ALMI („anterolateral minimal invasive“). Publikationen im deutschsprachigen und angloamerikanischen Sprachraum erfolgten unter anderem durch Bertin und Röttinger [5], Berger [6], Wohlrab et al. [7], Jerosch et al. [4], Schneider et al. [8], Graf und Azizbaig-Mohajer [9] sowie Roth und Venbrocks [10].
Insights into choline chloride–phenylacetic acid deep eutectic solvent for CO2 absorption

The properties of choline chloride plus phenylacetic acid deep eutectic solvents in neat liquid state and upon absorption of CO2 are analyzed using a theoretical approach combining quantum chemistry using Density Functional Theory and classic molecular dynamics methods. This study investigates the physicochemical properties, structuring, dynamics and interfacial behavior of the selected deep eutectic solvent from the nano-size point of view to infer its viability for effective CO2 capture. DFT results provided information on the mechanism of short-range interactions between CO2 and the studied DES, showing a better performance than previously studied DES. The mechanism of CO2 capture is analyzed considering model flue gas, showing a two-stage process with water, CO2 and N2 molecules developing adsorbed layers at the interface but in different regions. Water adsorbed layers would delay the migration of CO2 molecules toward bulk liquid regions, which should be considered for developing large-scale applications.
Accelerating Deep Reinforcement Learning With the Aid of Partial Model: Energy-Efficient Predictive Video Streaming

Predictive power allocation is conceived for energy-efficient video streaming over mobile networks using deep reinforcement learning. The goal is to minimize the accumulated energy consumption of each base station over a complete video streaming session under the constraint that avoids video playback interruptions. To handle the continuous state and action spaces, we resort to deep deterministic policy gradient (DDPG) algorithm for solving the formulated problem. In contrast to previous predictive power allocation policies that first predict future information with historical data and then optimize the power allocation based on the predicted information, the proposed policy operates in an on-line and end-to-end manner. By judiciously designing the action and state that only depend on slowly-varying average channel gains, we reduce the signaling overhead between the edge server and the base stations, and make it easier to learn a good policy. To further avoid playback interruption throughout the learning process and improve the convergence speed, we exploit the partially known model of the system dynamics by integrating the concepts of safety layer, post-decision state, and virtual experiences into the basic DDPG algorithm. Our simulation results show that the proposed policies converge to the optimal policy that is derived based on perfect large-scale channel prediction and outperform the first-predict-then-optimize policy in the presence of prediction errors. By harnessing the partially known model, the convergence speed can be dramatically improved. The code for reproducing the results of this article is available at https://github.com/fluidy/twc2020.
Identification and quantification of oxidized organic aerosol compounds using derivatization, liquid chromatography, and chemical ionization mass spectrometry

ABSTRACT A systematic approach for identifying and quantifying molecular components of complex organic aerosol mixtures is presented. The approach combines methods developed previously for derivatizing carbonyl, hydroxyl, carboxyl, and ester functional groups, which are commonly present in oxidized organic aerosol, with liquid chromatography, UV detection, and chemical ionization-ion trap mass spectrometry. The original derivatization-spectrophotometric methods were modified for compatibility with liquid chromatography and then evaluated by analyzing a variety of standard compounds that contain one or more functional groups. Detection limits for carbonyl, hydroxyl, carboxyl, and ester analysis are approximately 0.003, 0.02, 0.01, and 1 nmole, respectively. Mass spectral analysis of derivatives using isobutane and ammonia as reagent gases for chemical ionization can be used to determine compound molecular weight, and characteristic fragmentation patterns provide structural information for use in compound identification. The methods will be useful for analyzing the chemical composition of secondary organic aerosol (SOA) formed in laboratory studies to obtain information needed to develop quantitative reaction mechanisms that can be incorporated into atmospheric models to better predict the formation, composition, and fate of SOA. Copyright © 2017 American Association for Aerosol Research
AFX Zeolite for Use as a Support of NH3-SCR Catalyst Mining through AICE Joint Research Project of Industries–Academia–Academia

This paper introduces a joint industries–academia–academia research project started by researchers in several automobile companies and universities working on a single theme. Our first target was to find a zeolite for NH3-SCR, that is, zeolite mining. Zeolite AFX, having the same topology of SSZ-16, was found to be the one of the zeolites. SSZ-16 can be synthesized by using an organic structure-directing agent such as 1,1′-tetramethylenebis(1-azonia-4-azabicyclo[2.2.2]octane; Dab-4, resulting in the formation of Al-rich SSZ-16 with Si/Al below five. We found that AFX crystallized by use of N,N,N′,N′-tetraethylbicyclo[2.2.2]oct-7-ene-2,3:5,6-dipyrrolidinium ion, called TEBOP in this study, had the same analog as SSZ-16 having Si/Al around six and a smaller particle size than SSZ-16. The AFX demonstrated a high performance for NH3-SCR as the zeolitic support to load a large number of divalent Cu ionic species with high hydrothermal stability.
Comparison of Two-Year Outcome of Photodynamic Therapy in Combination with Intravitreal Aflibercept or Ranibizumab for Polypoidal Choroidal Vasculopathy

Purpose: To compare the two-year visual and anatomical outcomes of combination therapy of photodynamic therapy (PDT) with intravitreal aflibercept (IVA) or intravitreal ranibizumab (IVR) for patients with polypoidal choroidal vasculopathy (PCV), and to investigate the clinical factors with final visual outcome and retreatment. Methods: A retrospective medical chart review was performed for 55 eyes from 55 patients with PCV treated by a combination therapy of prompt PDT with either IVA (n = 30) or IVR (n = 25). Baseline data and treatment outcomes during the 24-month follow-up were compared between the two groups. Primary outcomes were the changes in best-corrected visual acuity (BCVA) and the rate of complete polyp regression. Secondary outcomes were the changes in central retinal thickness (CRT) and the rate of dry macula. Retreatment was administered in cases with persistent or recurrent submacular or intramacular fluid. Results: The BCVA significantly improved in the IVA/PDT group at every 6-month visit compared to the baseline. In the IVR/PDT group, there was a significant improvement of BCVA only at 6-months and 12-months, but not at 18-months and 24-months compared to the baseline. There were no significant differences in the BCVA change or CRT change between the two groups at every 6-month visit. A complete polyp regression rate at 3-months was 53.3% in IVA/PDT, and 52.0% in IVR/PDT. Significantly higher dry macula rate in Month 6 and 18 in the IVA/PDT group than in IVR/PDT group. Retreatment was performed in 26.7% patients in IVA/PDT, and in 60.0% patients in the IVR/PDT group. There were significantly lower retreatment rates in the IVA/PDT group than those in the IVR/PDT group. Better final BCVA was associated with better baseline BCVA and a younger age. Retreatment was associated with complete polyp regression at 3-months. Conclusions: Significant visual improvement was demonstrated in the IVA/PDT group at every 6-month visit, but only at a 6-month and a 12-month follow-up in the IVR/PDT group. Although changes of the BCVA/CRT and complete polyp regression rate were comparable between two groups, the IVA/PDT group required less retreatment and attained more dry macula results. Better baseline BCVA and younger age were associated with a better visual outcome.
Variación morfométrica en semillas de agaves silvestres de Oaxaca

Los agaves son plantas que presentan adaptaciones en su morfología y proliferan en ambientes difíciles, pero en la actualidad la producción de ensambles de mezcal ha provocado una drástica disminución en las poblaciones silvestres. Las semillas tienen una función de gran importancia en el ciclo biológico de las plantas, por medio de ellas las poblaciones persisten, se dispersan y regeneran. La morfometría geométrica en las semillas de agave permite profundizar en características biológicas de las semillas como la forma y el tamaño, y si dicha variación puede estar provocando alguna característica de la localidad. El objetivo fue analizar a nivel poblacional la variación morfológica en semillas de agave, a nivel interespecífico e intaespecífico, para proponer estrategias de manejo sustentable y comercial. Entre diciembre de 2017 a julio de 2018 se colectaron capsulas de Agave angustifolia Haw (espadín), A. karwinskii Zucc (cirial o cuishe), A. rhodacantha Trel (mexicano) y A. potatorum Zuc (tobalá) en diferentes localidades de Oaxaca. Se fotografiaron las semillas (100 por cada especie) y fueron procesadas en los programas Makefan6, TpsUtil y TpsDig. Los datos se analizaron en el programa MorphoJ. Las diferencias encontradas (p< 0.05) fueron principalmente en tamaño, y en menor proporción en la forma. Se encontró mayor variación en la zona micropilar y la zona basal de las semillas. Las diferencias encontradas en la forma de las semillas independientemente de las localidades donde se desarrollen puede deberse a factores genéticos y presiones del habitat. Las semillas de agave presentaron estructura lacriforme.