Miracle-dz/UniFAR-FTUs huggingface dataset:
SYNTHESIS AND CHARACTERIZATION OF WATER-SOLUBLE BLOCK COPOLYMERS WITH AN END-TAGGED NAPHTHALENE PROBE

Water-soluble A-B block copolymers of 2-perfluoroethyl-2-oxazoline or 2-pentyl-2-oxazoline as hydrophobic monomers and 2-methyl-2-oxazoline as hydrophilic monomer were prepared by means of the living cationic ring-opening polymerization. The polymerization was initiated with N-methyl-2-(1-naphthyl)-2-oxazolinium trifluoromethanesulfonate as fluorescence label followed by sequential addition of the hydrophobic and the hydrophilic monomer. The polymerization was monitored by 1H NMR spectroscopy and gel permeation chromatography (GPC) measurements. The results revealed that fluorophilic block copolymers can be prepared by this method while lipohilic block copolymers are not accessible by this monomer sequence. Micelle formation of the fluorophilic block copolymers in aqueous solution was studied by means of steady-state fluorescence spectroscopy which confirmed strong intermolecular excimer formation of the terminal bounded naphthalene moiety. In chloroform as a good solvent for both blocks, only monomer flu.
Dose Optimization of Antibiotics in Renally Impaired Patients in Indian Settings: A Prospective Observational Study

Rationale: In renal impairment, the pharmacokinetic properties of the drug are altered, and the systemic clearance is reduced. The current study aimed to assess the optimization of antibiotics dosing in renally impaired patients in a healthcare setting. Methodology: A prospective study was conducted on in-patients in the nephrology department, prescribed with antibiotics in a tertiary care hospital. The creatinine clearance was calculated by Cockroft-Gault and Jelliffe method. The dose appropriateness was cross-checked using standard databases and literature from the manufacturer data. Results: Of 139 participants 112 (80.6%) had CKD and 27(19.4%) had AKI. Urinary tract infection was most common. Monotherapy (62) was the most preferred choice, followed by dual in (43) and triple in (7%). A positive clinical outcome of 79.1% was achieved. Cefoperazone-sulbactam was most widely used antibiotic. The mean difference in creatinine clearance was 4.55ml/min in AKI patients. Conclusion: Dose appropriateness is a significant factor in achieving favorable clinical outcomes.
Information Sharing in an Online Marketplace with Co-opetitive Sellers

In recent years, the rapid development of online marketplaces has not only given rise to co-opetitive relationships between sellers but also to information asymmetry between online marketplaces and sellers. This paper studies information sharing in an e-commerce setting consisting of an online marketplace, an upstream manufacturer and a reseller, where the online marketplace possesses superior demand information while the manufacturer and reseller engage in a co-opetitive structure. The reseller procures the products from the manufacturer under a wholesale price contract, and both the manufacturer and the reseller sell the products through the online marketplace by paying a proportional commission fee. We examine the online marketplace's four information-sharing strategies: no information sharing (S1), full information sharing (S2), and partial information sharing with the manufacturer (S3) or with the reseller (S4). Our analysis shows that when the intensity of competition between the manufacturer and reseller is relatively low and the demand variability is moderate, the online marketplace should adopt full information sharing; otherwise, it will prefer to share its demand information with the manufacturer only. Moreover, interestingly, we find that the manufacturer always prefers the scenario of full information sharing to the scenario that endows it with an informational advantage against the reseller. By contrast, the reseller never prefers full information sharing. Depending on the competitive intensity and demand variability, the reseller will either prefer the scenario in which the online marketplace shares the demand information with it only or the scenario in which demand information is shared with the manufacturer only. The rationale for these results hinges on the interactions of the signaling cost, the efficiency effect, and the co-opetitive relationship between the manufacturer and the reseller.
Diagnóstico y reestructuración pedagógica en la enseñanza de programación de computadores en Ingeniería de Sistemas

La forma tradicional de enseñar programación ha resultado ser ineficiente a la hora de motivar a las nuevas generaciones de ingenieros para encontrar su camino profesional. En la Universidad Autónoma de Bucaramanga se tomó la decisión de crear una estrategia para resolver este problema, con el objetivo de mejorar las métricas de desempeño sobre los alumnos y profesores, así como orientar el currículo hacia las tendencias específicas de la disciplina (apps, IoT, web, IA y videojuegos) y, por último, hacer una revisión de las herramientas, plataformas y lenguajes de programación que estaban en tendencia a nivel mundial para incluirlos en el plan docente en conjunto con una metodología de gamificación experimental diseñada por los mismos docentes. Como resultado, las calificaciones generales mejoraron, las tasas de deserción disminuyeron y la población estudiantil en general aumentó.
Clinical and radiological spectrum of interstitial lung disease in a north Indian state: A single centre study

Background: The present study was carried out with an aim of understanding the types of Interstitial lung disease (ILD) and their radiological patterns in the north Indian state of Jammu and Kashmir. Methods: The present study was a prospective observational study conducted over a period of 2 years in Sher-i-Kashmir Institute of Medical SciencesMedical College, Bemina, Srinagar. All consecutive patients referred to the department for High Resolution CT scan (HRCT) of the chest with suspected diagnosis of ILD based on clinical features, spirometry and chest X-ray findings, who gave consent for the study were included. Clinical, biochemical, serological and radiological parameters were assessed and the diagnosis of various ILDs was made based on standard international criteria. Results: A total 122 patients of ILD were enrolled over a period of 2 years in the present study. Mean age of the patients was 63.4 ± 19.7 years and majority (59.8%) were males. 41.8% patients were current or previous smokers. Mean symptom duration before diagnosis was 3.1 ± 1.7 years. Exertional breathlessness (98.4%) and cough (94.3%) were the most common symptoms. Hypertension (70.5%) and gastroesophageal reflux disease (62.3%) were the most frequent comorbidities. On HRCT thorax ground glass opacities (52.5%) were the most common finding, followed by interlobular (39.3%) and intralobular (34.4%) septal thickening. Diffuse pattern of lung involvement was seen in 41.8% and predominant upper/middle lobe involvement in 33.6%. Idiopathic pulmonary fibrosis (29.5%) was the most common form of ILD, followed by Nonspecific interstitial pneumonia (23.8%) and hypersensitivity pneumonitis (15.6%). Gujjar lung, a unique form of ILD in Kashmir, was diagnosed in 2.5% patients. Conclusion: The present study is the first from the state of Jammu and Kashmir assessing the radiological spectrum and types of ILD in this part of country. It provides a useful insight into the clinical and radiological patterns of ILD in our population and highlights the need for larger prospective multicentre registries to assess the true incidence and prevalence of ILD in the country.
The complete chloroplast genome of Vatica guangxiensis S.L. Mo (Dipterocarpaceae): genome structure and evolution

Abstract Vatica guangxiensis S.L. Mo is an evergreen large tree of Dipterocarpaceae. Herein, we assembled the complete chloroplast genome of Vatica guangxiensis by next-generation sequencing technologies. The complete chloroplast genome sequence of Vatica guangxiensis is 151,010 base pairs (bp) in length, including a pair of inverted repeat regions (IRs, 23,827 bp), one large single-copy region (LSC, 83,353 bp), one small single-copy region (SSC, 20,003 bp). Besides, the complete chloroplast genome contains 123 genes in total, including 83 protein-coding genes, 36 tRNA genes, and 8 rRNA genes. Phylogenetic analysis showed that Vatica guangxiensis has the closest relationship with Vatica mangachapoi. Our study lay a foundation for further research of Vatica mangachapoi.
Precipitation of calcium carbonate in aqueous solutions

The precipitation of calcium carbonate from aqueous solutions has been studied at supersaturations sufficient for spontaneous precipitation but low enough to enable highly reproducible experiments to be carried out with respect to induction periods and rates of precipitation. The threshold for the onset of calcium carbonate precipitation at pH 8.60 has been established. The induction periods and rates of precipitation are both strongly dependent on supersaturation. Treatment of the kinetics data according to classical nucleation theory yielded an estimated 68 erg cm–2 value for the surface energy of the solid precipitating. From kinetics plots it is also suggested that the number of precipitating calcium carbonate crystals increases rapidly at the start of nucleation. At a later stage the particles stop increasing in number and subsequently grow. The apparent activation energy of 155 kJ mol–1 calculated from experiments carried out at 25, 35 and 45 °C points to a surface-controlled mechanism for the precipitation of calcium carbonate.
UNIFORMITY IMPROVEMENT OF PZT BASED ULTRASONIC TRANSDUCER

ABSTRACT A PZT based micromachined ultrasonic transducer is proposed. This transducer can be used both for microphone and microspeaker. By using the temporary boron-doped silicon layer, high uniformity of the resonance frequency of transducers can be realized. Besides, choosing an appropriate thickness of the support silicon dioxide layer can minimize the residual stress of the multilayer membrane structure. These PZT based transducers with high sensitivity and high uniformity could be widely used in various practical ultrasonic systems.
Calculation of a Premixed Swirl Combustor Using the PDF Method

The evolution probability density function (PDF) method provides a framework for the simulation of both diffusion and premixed turbulent flames. With this method, the chemical reaction rates are treated without approximation. In contrast, the conventional Reynolds-average methods need to model the mean reaction rates in turbulent flame calculations. In addition, conventional methods require special models for premixed flames that are developed under restrictive assumptions and rely on ad hoc expressions for the rate of reaction progress. The present work demonstrates the capability of the PDF method in realistic combustor design calculations. A lean premixed flame swirl combustor is simulated using the scalar PDF method, and the results are compared with experimental data. It is shown that the PDF method can correctly predict the turbulent flame speed and location of the flame. The ability of the PDF method to handle finite-rate complex chemistry of any number of reaction steps makes it an ideal candidate for emissions predictions in low emission combustor designs.Copyright © 1997 by ASME
The complete chloroplast genome of Douinia plicata (Lindb.) Konstant. & Vilnet (Scapaniaceae, Jungermanniales)

Abstract We completed chloroplast genome of Douinia plicata (Lindb.) Konstant. & Vilnet. , presenting morphological features including denticulate leaf margin, verrucose cuticle on base of leaves, and 80–100° keel angle with stem at the midleaf. It is 118,797 bp long (GC ratio is 33.9%) and has four subregions: 81,142 bp of large single copy (31.9%) and 19,611 bp of small single copy (31.0%) regions are separated by 9,017 bp of inverted repeat (46.3%) regions including 130 genes (86 protein-coding genes, eight rRNAs, and 36 tRNAs). Phylogenetic trees show D. plicata is clustered with two Scapania species.
Inversión en innovación: conductor de la generación de valor sustentable en empresas agroalimentarias

El objetivo de este artículo es determinar si la inversión en innovación de las empresas agroalimentarias que cotizan en la Bolsa Mexicana de Valores es un conductor para la generación de valor sustentable. Se analizaron las estrategias sobre la adopción de la sustentabilidad en empresas de la industria agroalimentaria, dadas las consecuencias por el cambio climático; después se examinaron las tendencias de consumo como elemento de contingencia para la innovación y finalmente, se usaron ecuaciones estructurales. Entre los resultados se encontró que las empresas sí invierten en innovación. Con la identificación de “inversión en innovación” como factor crítico se aporta evidencia que al diseñar estrategias de largo plazo para el desarrollo sustentable la organización puede generar valor de manera integral.
The Considerable Cases of Imported Malaria in Larestan in the South of Iran During 2008-2018

Background: Malaria is one of the fatal parasitic diseases caused by a species of Plasmodium parasite. The disease is found worldwide, and Plasmodium vivax, P. falciparum, P. ovale, P. malariae, and P. knowlesi are the common causes among which P. vivax and P. falciparum are numerous general malaria-causing species in the world. Therefore, the present research aimed at determining the extent of these cases over the past few years in one of the southern regions of Larestan, located in Fars province, Iran. Methods: The population of the study included people referring to health centers between 2008 and 2018 whose data were recorded in the health centers of Larestan county. Data collection and evaluation were performed through patient files and recorded information. Results: The entire number of recorded malaria cases from 2008 to 2018 was 156, from which 140 (89.8%) and five (2.3%) cases were related to P. vivax and P. falciparum, and 11 mixed cases (7%) were reported as well. Conclusions: Over the years, malaria eradication has been a significant problem for countries. Therefore, it is important to find out the intervening factors such as relapse and imported malaria. Hence, considering the reduced imported malaria is required for eradicating this disease.
Density and morphological characterization of bacteria in integrated and exclusive production systems

The different integrated production systems can directly interfere with its bacterial community. The present study aimed to assess density, bacterial diversity and the influence of dry and rainy season in different integrated and an exclusive production system. The fallow and a native forest area was assessed to. Samples were collected in 2012 March and September. The isolation were carried out into Petri dishes containing DYGS medium. The number of colony forming units (CFU) was counted after 48 hours and. The bacterial density ranged between 106 and 107 CFU g-1 soil. The crop system affected the dynamics of the bacterial community only in the rainy season. The rainy season showed greater density of total bacteria when compared to the dry period regardless of the cropping system. The dendrograms with 80 % similarity showed thirteen and fourteen groups in the rainy and dry seasons. Isolates with the capacity to solubilize phosphate in vitro were obtained from all areas in the two seasons, but this feature has been prevalent in bacteria isolated during the rainy season.
Size-Discriminative Self-Assembly of Nanospheres in Evaporating Drops

Evaporation of liquid drops containing nanospheres resulted in circular deposition patterns. The circularity of the patterns depended on the uniformity of the surface tension on the substrate. By employing binary suspensions, containing two differently sized nanospheres, it was possible to modulate the fine structure of such rings. Slow evaporation on mirror-polished substrates resulted in well-ordered distributions, where larger particles self-assembled in dense hexagonal packages, forming apparently an external ring, deposited around the massive inner ring. Deposition started at the air/liquid/solid-contact line. Results could inspire principles for the fabrication of optical devices and may be fruitfully used to design biomaterials with cell-selective properties. A simple model is employed to predict the radial arrangement of nanospheres in rings. Deviations from a standard order (predicted by the model) may be useful to detect biologically active nanoparticles.
EFECTO DE LA COBERTURA VEGETAL SOBRE LA ORIENTACIÓN DE LOS NIDOS DE COTORRA (MYIOPSITTA MONACHUS, PSITTACIDAE) EN EL CENTRO DE ARGENTINA

La cobertura vegetal sobre los nidos de las aves puede proporcionar protección ante diferentes factores climáticos, como los vien- tos y la radiación solar recibida. En este estudio, se examinó si la cobertura vegetal influye en la orientación de la boca de entrada de los nidos de cotorra (Myiopsitta monachus, Psittacidae) en un sitio rural del centro de Argentina. Se compararon nidos con distintos tipos de cobertura vegetal: nidos con buena cobertura (protegidos) y nidos con escasa o nula cobertura (desprotegidos). Se encontraron diferencias en la orientación media de las bocas de entrada entre los distintos tipos de cobertura vegetal; por un lado, los nidos protegidos mostraron una orientación de la boca de entrada al azar, sugiriendo que la vegetación puede proporcionar protección adicional y generar así patrones de orientación aleatorios. Por otro lado, los nidos desprotegidos mostraron una orientación de entrada no aleatoria, hacia el oeste, evitando así los vientos predominantes en la región. Este estudio muestra la importancia de considerar la cobertura vegetal en los análisis de orienta- ción de los nidos.
Solvent-free dehydrogenation of γ-terpinene in a ball mill: investigation of reaction parameters

The present article reports on the solvent-free dehydrogenation of γ-terpinene (1) in a planetary ball mill affording p-cymene (2) as the predominant reaction product. The influence of various reaction parameters and technical variables on the transformation of 1 has been assessed. Thus, it is shown that KMnO4 can be substituted by other, less-toxic and environmentally-benign oxidation agents (Oxone®, NaIO4, I2). In most cases the reaction yielded 2 with high selectivities, whereby conversion can be fine-tuned by variation of the oxidant-to-substrate ratio, the rotation frequency νrot, the number of milling balls nball or the type of grinding auxiliary employed. Contrary to particle refinement processes, the size of the milling balls d (constant mass) has no influence on the conversion and chemical yield.
A cfd design of engineered surface for tribological performance improvements in hydraulic pumps

In the present paper the preliminary results of the potentialities that surface texturing has in improving the coupling of lubricated surfaces in relative motion is presented. This kind surface engineering requires careful design of the geometry to obtain relevant improvements; therefore, it is useful to study in detail the behavior of the fluid confined between the coupled surfaces by means of CFD analysis. The purpose of this research is to study the effect of dimples created on one of the two coupled surfaces and to observe the variation of tribological properties as their principal design parameters vary, such as dimple shape, size and spatial distribution. Furthermore, simulations have been carried out with different sliding velocities and fluid temperatures to analyze the effects that these variables have on the tribological performance of the textured surface. The simulations also consider the presence of cavitation and the influence of this phenomenon on the overall behavior of the textured surface is evaluated.
Palladium catalysis of O2 reduction by electrons accumulated on TiO2 particles during photoassisted oxidation of organic compounds

Earlier theoretical analysis suggested that the quantum efficiency of photoassisted oxidation of organic compounds in water by O{sub 2} on n-TiO{sub 2} surfaces can be limited by the kinetics of the reduction of O{sub 2}. When the rate of O{sub 2} reduction is not sufficiently fast to match the rate of reaction of holes, an excess of electrons will accumulate on the TiO{sub 2} particles, and the rate of electron-hole recombination will increase. The authors now show experimentally that electrons do indeed accumulate on slurried TiO{sub 2} particles during photoassisted oxidation of 1.6 M aqueous methanol and that electrons on the slurried particles persist for at least {approximately}1 min even in O{sub 2}-saturated solutions. The rate of particle depolarization, i.e. of electron transfer to dissolved O{sub 2}, is increased and the negative charge on the TiO{sub 2} particles is completely eliminated upon incorporation of Pd{sup 0} in the surface of the TiO{sub 2} particles. The authors also show that incorporation of Pd{sup 0} in the surface increases the quantum efficiency of the photoassisted oxidation of 10{sup -2} M aqueous 2,2-dichloropropionate 3-fold at 0.01 wt % Pd and 7-fold at 2 wt % Pd. 30 refs., 6 figs., 1 tab.
Highlights of the tropospheric lidar studies at IFU within the TOR project

Abstract A summary of the ozone soundings with the tropospheric ozone lidar at IFU in the years 1991 and 1993 is given. The results cover vertical distributions obtained under a variety of meteorological conditions in different seasons such as during high pressure, before and after frontal passages and during stratospheric air intrusions. The lidar time series, carried out between typically 0.25 and 10 km and at intervals of about 1 h, are an excellent tool for transport studies. Quite frequently contributions of different processes may be observed even simultaneously which may yield insight on the troposphere as a whole. Although the time series were limited to single days during that phase information on a number of relevant transport processes could be extracted. In particular, the uplifting in the Alpine thermal wind system was investigated. The air in the valley is vented to heights in part even beyond 4 km a.s. l. during fair-weather summer days. The high efficiency of the underlying mechanism suggests a major contribution of the orographically induced transport in the Alps to the pollution export from the Central European boundary layer. A spectacular case of trans-Alpine ozone transport was examined which resulted in an ozone increase by about 40% after sunset. This case may, again, reflect the role of the Alps in the redistribution of air pollution in a larger area. In addition, episodes of long-range ozone and aerosol transport have been studied. In this paper, we present the example of intense Föhn with advection of dust-loaded air from the Sahara desert and beyond containing just 35 ppb of O3. A rather complex layering may be observed after cold-front passages associated with subsequent anticyclonic advection. The analysis of a two-day vertical-sounding series reveals that the air in different height ranges originated in the troposphere or stratosphere above rather different source regions, even in the lowermost 4 km above the United States. More recent studies have confirmed the reproducibility of the general layer pattern under such conditions. The in part considerable difference in ozone concentration makes the definition of a free-tropospheric background ozone level a difficult task.