Miracle-dz/UniFAR-FTUs huggingface dataset:
Stockage des poissons fumés et ou séchés : cas de Oreochromis niloticus " Fiha saly " malgache

Au cours du stockage des poissons fumes/seches, differentes reactions biochimiques peuvent intervenir et conduire a la non-acceptabilite ou rejet des produits. Pour determiner ces changements, le pH, la teneur en eau et le nombre de moisissures ont ete suivis sur des poissons fumes/seches entreposes pendant 6 mois. Des tests sensoriels ont egalement ete menes pour evaluer la qualite des produits. Les infestations ainsi que les pertes qui y sont liees ont ete estimees en comptant les insectes et en pesant des lots de poissons au cours du temps. La variabilite de la qualite du poisson fume/seche en fonction de la periode d'achat et de stockage a egalement ete integree a notre sujet d'etude. Les reactions biochimiques sont surtout des phenomenes d'oxydation qui se traduisent par une diminution du pH et le degagement d'odeurs d'alteration telles que rance (> 1,5 sur 3), soufree, acide et moisi. L'apparition de moisissures (1 a 36 UFC/g), due a la reabsorption d'eau par le poisson, contribue a cette degradation olfactive mais egalement visuelle. Au-dela de 90 jours de stockage, le poisson fume-seche achete en saison seche commence a etre rejete (note > 2 sur 3), tandis que le poisson achete en saison humide est a la limite de l’acceptabilite (note 2 sur 3), comme au debut du stockage. Jusqu’a 90 jours d’entreposage, les pertes sont causees principalement par l'infestation d’insectes et varient entre10 et 60 %. Une teneur en sel de 8 % semble etre efficace contre l'infestation mais contribue a la deterioration du produit lorsqu'il est stocke a des humidites relatives superieures a 65 %.
An ultrasensitive ELISA method for the detection of procalcitonin based on magnetic beads and enzyme-antibody labeled gold nanoparticles

Sepsis is a potentially fatal systemic body infection with a significant mortality rate worldwide. Procalcitonin (PCT) is a sensitive and specific biomarker for sepsis diagnosis, however, the traditional immune-gold labeling detection of PCT is semi-quantitative with relatively low sensitivity (>0.1 ng mL−1). Recently proposed techniques (such as electrochemical immunosensor, microarray, and total internal reflection based methods) require either a complex sensor or sophisticated equipment. Herein, we report a magnetic bead and enzyme-antibody labeled gold nanoparticle based ELISA strategy for sensitive PCT detection. This developed assay is sensitive enough to detect PCT at 20 pg mL−1, efficient for the direct human serum test. Notably, this assay specifically distinguishes PCT from other sepsis markers and the whole assay takes only 1.5 hours to finish.
PERBANDINGAN HARGA SAHAM PERUSAHAAN FARMASI BUMN SEBELUM DAN SESUDAH PENGEMBANGAN VAKSIN VIRUS CORONA (COVID-19)

The existence of an extraordinary event that occurred namely the COVID-19 Pandemic caused the global and national economies to experience obstacles. Not only does it have an impact on the economy, but this also has an impact on the capital market. The President's announcement regarding the development of the COVID-19 vaccine provides hope for the economy and capital market to revive. The state-owned pharmaceutical company appointed by the government has also benefited from vaccine development. The purpose of this study was to determine the difference in the share price of BUMN Pharmaceutical Companies before and after the development of the Coronavirus vaccine (COVID-19). The data analysis technique used in this study was the Paired sample t-test. The results showed that (1) the stock price of KAEF before the announcement of vaccine development and the stock price of KAEF after the announcement of vaccine development was a significant difference and (2) the stock price of INAF before the announcement of vaccine development and the stock price of INAF after the announcement of vaccine development had a significant difference.
Deep eutectic solvent-based dispersive liquid–liquid microextraction

In this study, for the first time, a new kind of solvent termed deep eutectic solvents has been synthesized and used as the extraction solvent in a dispersive liquid–liquid microextraction method. Some pesticides were used as model compounds and the proposed microextraction method was applied for their extraction and preconcentration from fruit juices and vegetables prior to gas chromatography-flame ionization detection. In this method, choline chloride and 4-chlorophenol were mixed at a molar ratio of 1:2 and after heating a water-immiscible deep eutectic solvent was formed. The obtained new solvent was mixed with a disperser solvent (acetonitrile) and the mixture was rapidly injected into an aqueous phase containing the analytes. The obtained cloudy solution was centrifuged and 1 μL of the sedimented phase was injected into the separation system. Some important parameters like the type and volume of the extraction solvent, ionic strength and pH of the aqueous phase, and centrifuge rate and time were studied. Under the optimum conditions, enrichment factors were in the range of 312–482. The linear ranges of the calibration curves were wide and the limits of detection and quantification were in the ranges of 0.46–3.1 and 1.5–11 ng mL−1, respectively. This method was simple and rapid for sample preparation.
Relationships between precipitation and surface water chemistry in three Carolina bays

Samples of surface water and bulk precipitation were collected bi-weekly for more than 21/2 years at three Carolina bays along a 25 km transect located on the Savannah River Site, South Carolina, U.S.A. Carolina bays are freshwater wetlands, the most abundant lentic systems of natural origin on the southeastern US coastal plain. Precipitation chemistry was similar at all sites; mean pH was 4.56, and the major ions were H + , 34.7 % of total cations, and SO 4 -- , 47.1 % of total anions. H + was positively correlated with SO 4 -- in precipitation, implying anthropogenic acids influence precipitation chemistry in this region. All three bays, Rainbow Bay (RB), Thunder Bay (TB), and Ellenton Bay (EB), contained soft (specific conductivity 5-90 μS/cm), acidic water (pH 4.0-5.9) with dissolved organic matter (DOM) from 4-60mg/L. The major cations for RB, TB, and EB, respectively, were: Mg ++ (31.6% of total); Na + (26 % of total); and Ca ++ (30.8 % of total). DOM was the major anion for all bays, and SO 4 -- represented 14 to 28 % of all anions. H + was not correlated with DOM or SO 4 -- in any of the three bays. In each bay, ionic concentrations varied over time. SO 4 -- concentrations were significantly higher in Rainbow Bay than Thunder Bay or Ellenton Bay, and H + concentrations were significantly higher in Thunder Bay than in the other two bays. This suggests that different biogeochemical processes may influence pH and other chemical variables in each bay. Precipitation and shallow groundwater are dominant water sources for these bays, but for all three bays changes in surface water H + were not directly correlated with precipitation loading of H + , NO 3 - , or SO 4 -- . However, ratios of SO 4 -- : Cl - in all three bays and in precipitation were higher than would be expected if marine aerosols were the major SO 4 -- source, suggesting that atmospheric inputs of anthropogenic acids may influence bay chemistry.
Argilas organofílicas: características, metodologias de preparação, compostos de intercalação e técnicas de caracterização (Organophilic clays: characteristics, preparation methods, intercalation compounds and characterization techniques)

Clays are materials used since historical periods and nowadays have several applications due to their interesting properties. The surface modification of clays is one area that has received enough attention from researchers because through modification it is possible to prepare new materials and find applications. The purpose of this paper is to present a review on the use of clays for obtaining organophilic clays, especially those used in polymeric nanocomposites. Several studies have been done based on different techniques and process conditions of these materials. The review includes clays of different regions, different modification agents and applications.
The Effect of Grafting on Squash Plants Grown Under Low Plastic Tunnel in Winter Season

(Received 31/01/2021, accepted 13/05/2021) DOI: 10.21608/ejoh.2021. 60786.1164 ©2021National Information and Documentation Centre (NIDOC) THIS study was carried out during the two successive seasons of 2015-2016 and 2016-2017 at Kaha Research Station, Horticulture Research Institute (HRI), Agricultural Research Center (ARC), Ministry of Agriculture, Egypt under low plastic tunnel to study the effect of grafting to resist low temperature in winter season the effect of grafting on vegetative growth, yield, and fruit quality of two squash hybrids (Cucurbita pepo L.) ‘Aziad and Raad’. Squash transplants were grafted on three rootstocks namely Lagenaria siceraria Standl (Lg), Cucurbita ficifolia (Cf), Cucurbita moschata (Cm) and self-grafted squash transplants used as a control. All transplants were grown under low plastic-tunnel conditions. The results showed that vegetative growth characters i.e., plant height, number of leaf per plant and leaf area were significantly increases when ‘Aziad’ hyprid was graftedon Cucurbita moschata (Cm) in both seasons. The same results were obtained with the characters of fruit quality i.e. number of marketable fruits/ plant, marketable fruit weight/plant, V.C. , carbohydrates, free proline and total chlorophyll. While, there were no significant differences realized when Aziad or Raad’grafted on the others rootstocks (Lg and Cf) compared with self-grafted plants (control) on leaves dry weight, average of fruit weight, Ca%, dry weight of 100g fresh fruit, TSS and total carotenoids.
Optimal Process Operations in Fast-Changing Electricity Markets: Framework for Scheduling with Low-Order Dynamic Models and an Air Separation Application

Today’s fast-changing markets often require the granularity of production schedules to be refined to time scales comparable to the time constants of a chemical process. Consequently, the process dynamics must be considered explicitly in production scheduling. High dimensionality, nonlinearity, and the associated computational complexity make incorporating dynamic models in scheduling calculations challenging. We propose a novel scheduling approach based on scheduling-oriented low-order dynamic models identified from historical process operating data. We introduce a methodology for selecting scheduling-relevant variables and identify empirical models that capture their dynamic response to production target changes imposed at the scheduling level. The optimal scheduling calculation is then formulated as a dynamic optimization aimed at minimizing operating cost. We apply these concepts to an industrial-size model of an air separation unit operating under time-sensitive electricity prices. Our approach reduce.
Electrostatic Energy of Cubic Spinel Structures

Zusammenfassung Für kubische Spinel-Strukturen werden Madelung-Konstanten und -Potentiale nach dem Ewald-Verfahren berechnet. Dabei werden der Auionparameter zwischen 0,375 und 0,395, die Ladungen an Tetraederstellen zwischen 1 und 6 und die Ladungen an Oktaederstellen zwischen 3,5 und 1 variiert. In einigen geordneten kubischen Spinel-Strukturen nimmt die Madelung-Konstante mit zunehmender Ordnung zu. Feldstärken an Anionstellen werden angegeben. Eine Näherungsmethode zur direkten Berechnung der Feldstärke wird vorgeschlagen.
Size Sensitive Transport Behavior of Liquid Metallic Mixtures

We have used a formalism that connects thermodynamic and transport properties. The formalism has been used to calculate the Gibb’s free energy of mixing, concentration fluctuations in the long wavelength limit, diffusion coefficients and viscosity in Cu-Tl, Cu-Pb and Sn-Tl binary liquid alloys at 1573K, 1473K and 723K respectively with aid of size effect and no size effect. Our calculations show that appreciable size ratio has more effects on the transport properties as compared to thermodynamic properties of homo-coordinated liquid alloys Cu-Tl, Cu-Pb and Sn-Tl. Journal of Institute of Science and Technology, 2015, 20(2): 140-144
Increasing relative maturity alters the base mineral composition and phenolic concentration of avocado fruit

The effect of increasing fruit maturity on fruit base mineral composition, phenolic content and the resultant influence on postharvest fruit quality and ripening physiology of ‘Fuerte’ avocado was investigated. Late harvested fruit with increasing maturity had reduced calcium and magnesium concentrations. A reduction in ripening time was associated with a decrease in fruit calcium concentration. The relationship, if any, between fruit potassium concentration and relative maturity was less clear. Total fruit phenolics increased with increasing fruit maturity and this was associated with an increased incidence of the cold storage browning disorder, mesocarp discoloration. Cold storage had no effect on total fruit phenolic concentration.
A transfer learning with deep neural network approach for diabetic retinopathy classification

Diabetic retinopathy is an eye disease caused by high blood sugar and pressure which damages the blood vessels in the eye. Diabetic retinopathy is the root cause of more than 1% of the blindness worldwide. Early detection of this disease is crucial as it prevents it from progressing to a more severe level. However, the current machine learning-based approaches for detecting the severity level of diabetic retinopathy are either, i) rely on manually extracting features which makes an approach unpractical, or ii) trained on small dataset thus cannot be generalized. In this study, we propose a transfer learning-based approach for detecting the severity level of the diabetic retinopathy with high accuracy. Our model is a deep learning model based on global average pooling (GAP) technique with various pre-trained convolutional neural net- work (CNN) models. The experimental results of our approach, in which our best model achieved 82.4% quadratic weighted kappa (QWK), corroborate the ability of our model to detect the severity level of diabetic retinopathy efficiently.
Preparation and Characterization of Biochar Sorbents Produced from Malt Spent Rootlets

The present study aims at the preparation and characterization of biochars produced from malt spent rootlets (MSR) under different pyrolysis temperatures. The biochars were characterized for their surface area, microporosity, suspension pH, acid–base behavior, and functional groups on their surface. The highest surface area (340 m2/g) and porosity (0.21 cm3/g) were observed for MSR pyrolized at 800 °C. For the same biochar, 67% of the pore volume corresponds to micropores (<2 nm). The high-temperature biochars resulted in highly alkaline suspensions (pH 9.9) compared to MSR suspensions (pH 5.3). The functional groups (e.g., hydroxyl, phosphonic, amine, or carbon-bonded sulfhydryl) found on the MSR surface disappear as the pyrolysis temperature increases without new ones forming. Thus, the surface charge of high-temperature biochars is low. For phenanthrene, the sorption capacity of biochars pyrolyzed at or above 750 °C increases by almost 1 order of magnitude compared to the raw material. For mercury, sor.
Communicating corporate LGBTQ advocacy: A computational comparison of the global CSR discourse

Corporations are increasingly engaging in political and social issues through corporate social responsibility (CSR) initiatives, in contentious areas such as lesbian, gay, bisexual, transgender, queer (LGBTQ) advocacy. This article systematically, comparatively, and computationally examines this intersection, and contributes to the literature by 1) examining the global LGBTQ CSR discourse constructed by Fortune Global 500 companies (136,820 words) with semantic network analysis and structural topic modeling, 2) surveying non-profit organizations’ guidelines and comparing corporate values with them, and 3) exploring how stakeholder expectations and institutional factors influence CSR communication. Results indicate 6 corporate topics and 9 non-proﬁt topics, which were explicated by referencing organizations’ original writing. It is further shown that stakeholder expectations and institutional factors not only affect whether organizations report LGBTQ efforts, but also affect what topics these companies highlight in their CSR communication. Companies in democratic countries with substantial stakeholder expectations emphasize areas that need high investment and exceed legal obligations.
Application of a Newly Developed Method for Estimating the Premature Yeast Flocculation Potential of Malt Samples

Premature yeast flocculation (PYF) is a serious problem in the brewing industry. Yeast flocculate prematurely during yeast fermentation while high sugar concentrations remain and lead to a marked reduction in the number of yeast cells, all of which impact beer quality. It is very important for brewers to know the PYF potential of malt. Consequently, a simple two-day fermentation method to estimate the PYF potential of malts was developed on a 50-mL scale in which the cropping yeast of breweries and propagated lager yeast cultures can be used. The method is useful for purchasing the malt batches and estimating the effect of blending malts at the breweries. This newly developed method could be a good tool for research on PYF, and we have concluded the following: 1) long-term storage of malt had no effect on decreasing the PYF potential; 2) washing whole malt was effective in decreasing the PYF potential; 3) all the ale yeast examined was not clearly influenced by PYF-positive malt; and 4) all the lager yeast examined was sensitive to PYF malt even if it was nonflocculent.
Improvement of enzymatic conversion of methylbenzylamine by direct extraction of acetophenone

ABSTRACT The individual and selective extraction of acetophenone and methylbenzylamine with n-heptane without and with 1-octanol has been analysed at different pH values, using an extraction system that avoids the reciprocal dispersion of the two phases. For individual extraction, the values of acetophenone mass flow were for 1.6–2.1 times higher than that of methylbenzylamine. The interfacial transfer has been accelerated by adding 1-octanol into the organic phase. The difference between the interfacial mass transfer rates of acetophenone and methylbenzylamine has been amplified during the separation of these compounds from their mixture. In the presence of 1-octanol the selectivity factor reached values over 1,000.
Thermodynamic Analysis of Vapor Absorption Refrigeration System and Calculation of COP

This paper provides an analytical study of absorption refrigeration technology. Through the application of the first and second laws of thermodynamics upper and lower limits for the coefficient of performance (COP) of absorption cooling cycles are derived. These upper and lower limits, besides being dependent on the environmental temperatures of components of the cycle, are also dependent on the thermodynamic properties of refrigerants, absorbents, and their mixtures. The objective of this work is to design a lithium bromide-water (LiBr-H2O) absorption refrigerator with a nominal capacity of 5.25 kW. The various stages of refrigeration system are presented including the design of the evaporator, absorber, solution heat exchanger, generator and condenser and finally COP is calculated. Keywords—Refrigeration, Refrigerant, Absorption, Coefficient of performance(COP), Heat pump.
Compressibility of 2M1 muscovite-paragonite series minerals: A computational study to 6 GPa

Abstract The muscovite–paragonite (Ms–Pg) series [K1–xNaxAl2(Si4–yAly)O10(OH)2] is a group of micas with end-members of Ms (x = 0, y ≍ 1) and Pg (x = 1, y ≈ 1). This mineral series is found in the Earth’s crust and upper mantle. The series shows a wide immiscibility gap between the end-members. Density functional theory (DFT) is used to show the compression in five models of the 2M1 polytype Ms-Pg series to 6 GPa. Bulk moduli and cell-parameter moduli were obtained from a least-square fitting of pressures and volumes to a third-order Birch-Murnaghan equation of state. Bulk-modulus values of the end-members of the series agree with the range of experimental values. Bond lengths and atomic-group geometries were studied as a function of the pressure and composition of the series by determining the moduli. Compression mechanism has been determined. The excess volumes, Vex, were higher for the Na-rich members than for the K-rich members. Vex follow a Redlich-Kister behavior. The excess free energy, Gex, was calculated isobarically in a semiempirical way: the DFT excess volume data were calculated in one experimental model (A from Roux and Hovis 1996) in a Redlich-Kister function. The Gex as a function of the composition of the Ms-Pg join of the A model show two minima with constant composition to 0.75 GPa, evolving to richer end-member compositions at greater pressures. Therefore, the solvus should increase the gap of immiscibility at high pressure.
Homologous Overexpression of Genes in Cordyceps militaris Improves the Production of Polysaccharide

Background Cordyceps polysaccharides have been used around the globe for its bioactivity for millennia. However, the study and medicinal of Cordyceps militaris polysaccharides has been hampered by the low in natural abundances. Recently, the genetic engineered C. militaris developed for production of exopolysaccharides (EPS) had received extensive attention.Results In this study, based on the biosynthetic pathway and metabolization mechanism of exopolysaccharides, the crucial biosynthetic genes of Cordyceps polysaccharides were introduced by Agrobacterium transformation to provide a high flux of EPS. 21 mutants of C. militaris were identified through antibiotic screening and DNA sequencing. The maximum yield of EPS produced by mutant CM-pgm-H was 4.63 ± 0.23 g/L, while the yield of wild-type strain was 3.43 ± 0.26 g/L. And the data obtained in the present study indicated that the yield of EPS produced by the engineered strain treated with co-overexpression of phosphoglucomutase and UDP-glucose 6-dehydrogenase genes achieved 6.11 ± 0.21 g/L, which was increased by 78.13% compared with the wild-type strain.Conclusions CM-pgm-H obtained the highest EPS content than that of mutants glucokinase, UDP-glucose pyrophosphorylase, UDP-glucose 6-dehydrogenase. It indicated that the content of protein phosphoglucomutase was the most critical influencing factor on the CP production in C.militaris. Furthermore, the EPS production of CM-ugdh-pgm-M was significantly improved 1.78-fold by co-overexpression. It anticipated that our engineering strategies will play an important role in the development of C. militaris for sustainable production of Cordyceps polysaccharides.
Synthesis and Stability of Tagged UiO-66 Zr-MOFs

The development in the field MOF materials is moving from the discovery of new structures toward applications of the most promising materials. In most cases, specialized applications require incorporation of functional chemical groups. This work is a systematic investigation of the effect that simple substituents attached to the aromatic linker have on the stability and property to the parent MOF. A family of isoreticular MOFs, based on the UiO-66 structure was obtained from the three different linker ligands H2N−H2BDC, O2N−H2BDC, and Br−H2BDC. The physicochemical and chemical investigation of these materials demonstrate that this class of MOFs retains high thermal and chemical stabilities, even with functional groups present at the linker units. The results demonstrate the possibility of incorporating active functional groups into the UiO-66 structure almost without losing its exceptionally high thermal and chemical stability. It has been established that the functional groups, at least in the amino func.