Miracle-dz/UniFAR-FTUs huggingface dataset:
Surgical Treatment in Inflammatory Colitis (Retrospective Study of 13 Cases)

DOI: 10.21276/sjmcr.2018. 6.11. 23 Abstract: Inflammatory colitis are inflammatory bowel disease. They are medicosurgical affections; their treatment is initially medical and become surgical in the event of complications or failure of medical treatment. This is retrospective study and conserne a series of 13 cases of inflammatory bowel disease including one case of ulcerative colitis (UC), all operated in the surgical department “A” of the children’s hospital. The aim of the study is to explain the epidemiological, clinical, and paraclinical characteristics for inflammatory bowel disease and to specify the indications and the place of the surgical treatment in the assumption of responsibility of the inflammatory colites in the child. The average age of surgical patients was 14.4 years, with a sex ratio which was one. The most frequent location for Crohn's was ileocecal location, so it interested the entire colon including the rectum to the case of ulcerative colitis. The main indication for surgery was the enterocutaneous fistulae (25%). We can say that the place of surgical treatment remains high, surgery is dominated by the actions of excision according to the location of the infringement. In our series, resection was performed in 11 cases; the procedure most used is the ileocecal resection. In the only case of ulcerative colitis, total colectomy with ileoanal anastomosis was necessary. The postoperative continuations were marked by the appearance in two patients with a recurrence leading to an entero-cutaneous fistula at the right iliac fossa which had evolved under medical treatment, one patient had sepsis in the postoperative and died in intensive’ care department.
Optimization, characterization and biological properties of phenolic compounds extracted from Rosmarinus officinalis

Abstract This study evaluated the optimal conditions for the extraction of phenolics from Rosmarinus officinalis. Phenolic extracts were obtained under extraction conditions in which several parameters were varied (time, temperature, solvents and free and bound forms). The results revealed that the optimum conditions for maximum phenolic content extraction and antioxidant activity were achieved using a mixture of methanol and water at 60 °C/1 h. However, the optimal extraction conditions for phenolics with the highest hypertensive (ACE) or diabetic (α-amylase and α-glucosidase) enzyme inhibitory activity were observed using a mixture of acetone and water for extraction at 40 °C/6 h or methanol at 50 °C/8 h, respectively. The results indicated that the free and bound phenolic compounds had antioxidant, antihypertensive and antidiabetic properties. The predominant free phenolic compound identified in rosemary was thymol, while chlorogenic and caffeic acids were the predominant bound phenolic compounds.
Chimie de surface de nanoparticules de ruthénium : approches théoriques

La chimie de surface de petites nanoparticules metalliques ( ~ 1 nm), principalement de ruthenium ou d'alliages de ruthenium, a ete etudiee par une approche theorique au niveau DFT. Cela est appuye par le developpement d'outils d'analyse de proprietes structurales, electroniques et thermodynamiques de ces nanoparticules. Une premiere partie est consacree a l'etude des proprietes structurales de nanoparticules metalliques. La variete de morphologie des nanoparticules ainsi que la necessite de pouvoir generer des modeles appropries sont mises en evidence. En particulier, l'affinement de la generation de modeles structuraux theoriques est rendu possible via l'implementation de methodes de modelisation de nanoparticules generiques couplees a l'utilisation de la methode de Monte Carlo inverse permettant se rapprocher au plus pres de la realite experimentale. L'application a ces nanoparticules de descripteurs electroniques ou morphologiques, tels que le d-band center ou le nombre de coordination generalise, est par la suite proposee en relation avec leur capacites d'adsorption, et plus generalement dans le cadre du principe de Sabatier. Un descripteur electronique de la liaison chimique (COHP) est applique aux differentes nanoparticules, pour mettre en evidence les differences entre structures aussi bien que la nature des interactions au sein du cœur metallique, ainsi qu'entre ce cœur et les especes de surface. Enfin, l'adsorption d'especes a la surface de ces modeles est etudiee. L'adsorption d'un seul ligand a la surface d'une nanoparticule modele est utilisee comme sonde de determination de sites d'adsorption preferentiels, puis des taux d'adsorption plus eleves sont consideres dans le but d'etudier l'influence de celui-ci sur l'adsorption de ligands surnumeraires, ainsi que pour rendre compte de l'influence des ligands de surface sur la morphologie du cœur metallique. Pour cela, les proprietes thermodynamiques des systemes adsorbes ont ete modelisees par prise en compte de l'influence de la pression et de la temperature sur la stabilite relative des diverses structures via une modelisation de thermodynamique ab initio. Enfin, cette meme approche a ete utilisee pour etudier la co-adsorption de ligands H2 et CO a la surface de nanoparticules de ruthenium et de rhenium dans le cas particulier de la synthese de Fischer-Tropsch, permettant notamment de proposer un intermediaire thermodynamiquement favorable pour cette reaction. Une etude preliminaire de cette reaction, d'un fort interet chimique et societal, conclut ce manuscrit. L'utilisation combinee des approches structurale, electronique et thermodynamique permet alors d'avoir un point de vue elargi sur certains aspects de la chimie de ces nanoparticules de ruthenium.
Determination of Oxygen, Carbon Dioxide and pH of Dal Lake Kashmir

In a 5-month experiment on Dal Lake kashmir, Water temperature (10.4e10.6(C), pH (7.2e7.4) and oxygen concentration (8e10 mg l_1) were similar among other sites with little difference. Concentration of total ammonia nitrogen (TAN) was similar among groups for the first half of the experiment (0.3e0.4), but during the last month it was 0.6, 1.3, and 1.5 mg l_1 in Groups1, 2, and 3, respectively. There was a negative correlation (r2 1⁄4 0.48, n 1⁄4 36) between relative growth rate and TAN, suggesting that ammonia may have been a limiting factor in there circulating system. The apparent threshold limit of TAN for reduced growth wasapproximately1 mg l_1.
HOW RELIABLE ARE CALIBRATORS FOR URINARY MELATONIN SULFATE

Melatonin is a versatile physiological agent that relating to the control of numerous physiologic processes owing to the multiplicity of sites of formation and the presence of melatonin receptors in various places of a human body. The melatonin metabolite 6-sulphatoxymelatonin (alias aMT6s or 6-SMT) infiltrates in urine. Therefore, there is a sense to find the sensitive and selective express-methods for the precise detection of melatonin metabolites in body fluids.The calibrators are proper tools for the signal processing. In the present research work that is the set of few calibers with well-defined concentrations of analyte. Comparison of the measured response of actual sample with reactions of calibers permits to interpret the real signal. Such a response can be either the transmittance or the optical density of sample that are measured by a photometer. The calibration of dose-response relation has been described by logistic Hill's curve with four parameters. The photometric transmittances of analyzed solutions were considered as the response. This paper describes the evaluation and comparison of sets of Hill's parameters for aMT6s-calibrators of independent producers. Reliable calibrators could help to simplify the analysis of urinary melatonin-sulfate dose. Such express-analysis could be more accessible in addition. Hence, the problem of creation of reliable calibrators is still unsolved and challenging.
Cyanine Dyes: Self Aggregation and Behaviour in Surfactants

The cyanine dyes came to the limelight in 1856 [1] for their application to impart light sensitivity to silver halide emulsions in a region of the spectrum to which the silver halide is normally not sensitive. Numerous applications in various areas are being published every year on this subject. Now it has gained importance for their use in photodynamic therapy and in various biological activities. The generic cyanine dyes consist of two nitrogen centers, one of which are positively charged and are linked by a conjugated chain of an odd number of carbon atoms to the other nitrogen ( 1 ). This has been studied as ? Push-pull? alkenes and forms the basis of the polymethine dyes, which contain the streptopolymethine unit as the chromophore. These dyes are classified as cationic streptopolymethines and hemicyanines ( 1 ), anionic streptopolymethine oxonols ( 2 ), neutral streptopolymethine merocyanines ( 3 ) and zwitterionic squaraine-based cyanines ( 4 ) depending upon the charge of the streptomethine unit. Generally these dyes have an all-trans geometry in their stable form. These dyes undergo photo-isomerization, which can be studied by using various techniques such as flash photolysis, transient absorption, picosecond time-resolved spectroscopy, etc. [2-5]. The cyanines, merocyanines and squaraine dyes are substances with a variety of colors, but are not widely used for dyeing purposes, as they are decolorized by light and acid.
Approaching the fill factor Shockley–Queisser limit in stable, dopant-free triple cation perovskite solar cells

Perovskite solar cells now compete with their inorganic counterparts in terms of power conversion efficiency, not least because of their small open-circuit voltage (VOC) losses. A key to surpass traditional thin-film solar cells is the fill factor (FF). Therefore, more insights into the physical mechanisms that define the bias dependence of the photocurrent are urgently required. In this work, we studied charge extraction and recombination in efficient triple cation perovskite solar cells with undoped organic electron/hole transport layers (ETL/HTL). Using integral time of flight we identify the transit time through the HTL as the key figure of merit for maximizing the fill factor (FF) and efficiency. Complementarily, intensity dependent photocurrent and VOC measurements elucidate the role of the HTL on the bias dependence of non-radiative and transport-related loss channels. We show that charge transport losses can be completely avoided under certain conditions, yielding devices with FFs of up to 84%. Optimized cells exhibit power conversion efficiencies of above 20% for 6 mm2 sized pixels and 18.9% for a device area of 1 cm2. These are record efficiencies for hybrid perovskite devices with dopant-free transport layers, highlighting the potential of this device technology to avoid charge-transport limitations and to approach the Shockley–Queisser limit.
Natural Product Utilization As Antioxidant Formulated in Nanoemulsion

Natural products such as propolis, green tea, and corncob are containing several compounds called antioxidant. It is important to make a dosage form that could keep the stability and could protect the effectiveness of antioxidant activity of the extracts. In this research, nanoemulsion (NE) was chosen as the dosage form. First, all of the natural products were extracted using reflux methods. The yield of EEP was 11.12%; green tea extract (GTE) was 23.37%; and corncob extract (CCE) was 17.23%. EEP contained steroid/triterpenoid, flavonoid, and saponin. GTE contained flavonoid, tannin, and quinone while CCE contained flavonoid, phenol, and tannin. The antioxidant activities of the extracts were then measured using DPPH scavenging capacity methods. The value of DPPH scavenging capacity were 61.14% for EEP; 97.16% for GTE; and 78.28% for CCE. The value of IC50 for EEP was 0.41629 ppm. After the extracts were evaluated, NE was prepared. Several surfactants and co-surfactants were used in many combinations and ratios in order to form a NE. Tween 80 and Kolliphor RH40 were used as surfactants while glycerin and propylene glycol were used as co-surfactants. The best NE consists of 26.25% of Kolliphor RH40; 8.75% of glycerin; 5% of rice bran oil; 3% of extracts; and 57% of water. EEP NE had globule size around 23.72 nm; polydispersity index below 0.5; and did not cause any irritation on rabbits. EEP NE was proven to be stable after passing stability test within 63 days at room temperature and 6 cycles of Freeze and Thaw test without separated. Based on TEM (Transmission Electron Microscopy) test, EEP NE had spherical structure with most of its size below 50 nm. The antioxidant activity of EEP NE was monitored for 6 weeks and showed no significant difference. The value of DPPH scavenging capacity for EEP NE was around 58%; for GTE NE was 96.75%; and for CCE NE was 55.69%.
Analyse des mécanismes de pénétration intramembranaire de porphyrines glycoconjuguées utilisables en thérapie photodynamique des cancers : modélisation des interactions spécifiques et non-spécifiques

La complexite des membranes biologiques est a l'origine du developpement des modeles membranaires artificiels comme outils indispensables a la comprehension des mecanismes d'interaction entre medicaments et membrane cellulaire. Cette these porte sur l'etude des interactions non specifiques et specifiques entre de nouvelles porphyrines glycoconjuguees utilisables en therapie photodynamique (PDT) et des modeles membranaires biomimetiques (monocouches, bicouches planes supportees et liposomes) du retinoblastome portant a leur surface une lectine specifique du mannose. Les principales techniques utilisees pour cette etude sont la tensiometrie de surface, la spectrometrie de fluorescence, la microbalance a cristal de quartz avec mesure de dissipation (QCM-D) et diffusion quasi-elastique de lumiere (DLS). Les porphyrines glycoconjuguees se sont averees comme des molecules prometteuses, capables a interagir d'une maniere non specifique (penetration passive) et specifique (ciblage des recepteurs de type lectinique) avec les modeles membranaires du retinoblastome.
Optically Transparent Broadband Microwave Absorption Metamaterial By Standing‐Up Closed‐Ring Resonators

Optically transparent metamaterial microwave absorbers (MMAs) developed so far unexceptionally encounter an intrinsic contradiction between extending the absorption bandwidth and improving optical transparency, hindering their practical applications. This work, in its experiment and calculation, demonstrates an MMA with both broadband microwave absorption and excellent optical transparency by standing‐up closed‐ring resonators (CRRs) in an indium tin oxide backed Plexiglas board. The as‐designed MMA shows a strong microwave absorption of 85% covering a wide frequency of 5.5–19.7 and 22.5–27.5 GHz up to a large incident angle of 70o due to the electric and magnetic resonances caused by the standing‐up arrangement of the CRRs, as well as the multiple reflection mechanism. Moreover, in sharp contrast to the widely adopted stacking multiple layers at the expense of greatly reduced optical transparency, it has an optical transmittance of around 82%, as calculated by a transfer matrix method. The standing‐up MMA proposed here provides an effective way to achieve broadband microwave absorption and high compatibility with optical transparency, enabling wide applications in window glass of stealth armament and electromagnetic compatible buildings/facilities.
Opto-électronique de boîtes et puits quantiques colloïdaux - Application au photo-transport

Les nanocristaux colloidaux semi-conducteurs sont des materiaux synthetises en suspension et dont les proprietes optiques sont ajustables par leur taille. Une fois sous forme de film, il est possible d’effectuer du transport de charges et ainsi obtenir des dispositifs opto-electroniques. Nous avons choisi deux types de nanocristaux presentant des proprietes optiques originales, mais dont le transport est mal connu. Nous l’etudions d’abord dans des films de nanocristaux bidimensionnels, les nanoplaquettes de CdSe, qui sont une realisation colloidale de puits quantiques. Nous montrons qu’il est possible d’accroitre le gain de photoconduction en passivant les pieges electroniques afin d’augmenter le temps de vie des porteurs photogeneres. Nous tirons egalement parti de l’extension laterale de ces objets en les deposant sur des electrodes nanometriques de la taille des particules. Cela permet de s’affranchir du transport par sauts tunnel tout en surmontant l’interaction coulombienne entre l’electron et le trou photogeneres. De maniere alternative, nous utilisons un canal de graphene comme couche de transport. Combine aux proprietes optiques bien definies des nanoplaquettes, nous associons ainsi le meilleur des deux mondes. Enfin, nous etudions le transport dans des films de nanocristaux de HgSe. Ces objets etant naturellement dopes apres synthese, ils presentent une transition intrabande dans l’infrarouge moyen. Nous montrons que le dopage peut s’expliquer par la reduction des nanocristaux par l’eau, et qu’il est controlable en jouant sur les dipoles de surface induits par les ligands. Cela nous permet finalement d’elaborer un photodetecteur sur un substrat flexible.
Enhancing Kondo Coupling in Alkaline-Earth Atomic Gases with Confinement-induced Resonances in Mixed Dimensions

The Kondo effect describes the spin-exchanging interaction between localized impurity and the itinerant fermions. The ultracold alkaline-earth atomic gas provides a natural platform for quantum simulation of the Kondo model, utilizing its long-lived clock state and the nuclear-spin exchanging interaction between the clock state and the ground state. One of the key issue now is whether the Kondo temperature can be high enough to be reached in current experiment, for which we have proposed using a transverse confinement to confine atoms into a one-dimensional tube and to utilize the confinement-induced resonance to enhance the Kondo coupling. In this work, we further consider the 1 + 0 dimensional scattering problem when the clock state is further confined by an axial harmonic confinement. We show that this axial confinement for the clock state atoms not only plays a role for localizing them, but also can act as an additional control knob to reach the confinement-induced resonance. We show that by combining both the transverse and the axial confinements, the confinement-induced resonance can be reached in the practical conditions and the Kondo effect can be attainable in this system.
Structure and Vibrational Spectra of 2,5-Diiodothiophene: A Model for Polythiophene

The structure and vibrational spectroscopy of 2,5-diiodothiophene have been described for the first time. The structure is remarkable in that, despite the presence of eight molecules in the unit cell, there is almost no evidence for any interaction between them. This is reflected in the spectra that show coincident modes in the infrared, Raman, and inelastic neutron scattering (INS) spectra and almost resolution-limited line widths in the INS spectrum, showing that both the factor group splitting and the phonon dispersion are very small. This property has led to the use of the compound as a calibrant in INS spectroscopy. The deductions from the spectra are confirmed by a periodic density functional theory (DFT) calculation that allows a complete spectral assignment to be made. Comparison to the INS and Raman spectra of polythiophene (for which 2,5-diiodothiophene may be used as a monomer) shows a marked similarity for the former and a marked difference to the latter. The INS spectrum of polythiophene is d.
Phytochemical analysis and antimicrobial activity of aqueous, ethanol, and acetone extract of Azadirachta indica Juss in combination with streptomycin

Azadirachta indica A Juss. Is a very useful traditional medicinal plant in the sub-continent and each part of the tree has some medicinal properties. The present study was carried out to screen and evaluate antimicrobial activity of leaf extract of Azadirachta indica. Ethanol, Acetone and aqueous extract leaves of A. indica were tested against Escherichia coli and Staphylococcus aureus which are known to be resistant to various antibiotics. These extracts were prepared from dry Azadirachta indica leaves and evaluated for their part in increasing antibacterial activity of streptomycin against S. aureus and E. coli. The antibacterial activity of streptomycin was enhanced against the test organism in the presence of these extracts. Streptomycin in combination with these extracts showed maximum inhibition against S. aureus and E. coli. Phytochemical analysis gave positive results for steroids, triterpenoids, alkaloids, glycosides, phenolic compounds, flavonoids, and tannins. Leaf extract of Azadirachta indica contains pharmacologically bioactive constituents that may be responsible for its activity against test organisms.
Optimization and characterization of electrospun chitosan/poly(vinyl alcohol) nanofibers as a phenol adsorbent via response surface methodology

Fabrication and characterization of chitosan/poly(vinyl alcohol) electrospun nanofibers for adsorption of phenol from water were investigated. The effects of voltage (15–30 kV), solution injection flow rate (0.5–1.5 ml/hr), distance of needle and collector (10–20 cm) and chitosan/poly(vinyl alcohol) ratio (25/75, 50/50, 75/25) were studied to obtain the optimum electrospinning conditions for the maximum adsorption capacity of phenol. Central composite design (CCD) was used to investigate and optimize the processing factors for production of chitosan/poly(vinyl alcohol) nanofibers from aqueous solutions. The nanofibers were characterized using scanning electron microscopy and Fourier transform infrared spectroscopy (FTIR). Uniform beadless nanofibers with the minimum diameters of 3–11 nm were obtained at chitosan/poly(vinyl alcohol) ratio of 50/50, voltage of 22.5 kV, distance of 15 cm and injection flow rate of 1.99 ml hr−1. Fourier transform infrared spectrum of chitosan/poly(vinyl alcohol) exhibited the existence of relevant functional groups of both poly(vinyl alcohol) and chitosan in the blends. Results of CCD show that among all processing factors, rate of electrospinning will highly affect the nanofiber adsorption. The response surface quadratic order model presented correlation coefficient explaining 69.5% of the variability in the adsorption. Copyright © 2017 John Wiley & Sons, Ltd.
THE EFFECT OF DIETARY VITAMIN E AND ZINC LEVELS ON PERFORMANCE AND LIPID OXIDATION IN FRESH AND STORED EGGS OF LAYING DUCKS

Vitamin E and zinc are necessary for preventing free radical damage to phospholipid membranes, enzymes and other important molecules. The objective of this study was to evaluate the effect of dietary vitamin E and zinc levels on performance and lipid oxidation in fresh and stored eggs of laying duck. A total of 90 of 22 weeks old ducks were randomly divided into 15 experimental units by assigning a completely randomized design with 5 treatments and 3 replications. The treatment diets were R1 (control diet), R2 (R1+40 IU vitamin E), R3 (R1+80 IU vitamin E), R4 (R1+100 ppm organic zinc), and R5 (R1+200 ppm organic zinc). The experiment was carried out for 8 wk. Parameters observed were feed intake, egg production, egg weight, feed conversion ratio, and Thiobarbituric Acid Reactive Substances (TBARS) value. The results showed that increasing of vitamin E from 40 IU to 80 IU and zinc from 100 ppm to 200 ppm did not affect feed intake and egg weight. Otherwise, the dietary Vitamin E and organic zinc significantly decreased (P<0.05) feed conversion ratio and significantly increased (P<0.05) egg production and decreased (P<0.01) TBARS values. It is concluded that dietary 40 IU vitamin E or 100 ppm organic zinc could increase the performance of laying ducks and dietary 200 ppm organic zinc was more efective to be antioxidant than 40 and 80 IU vitamin E.