bluuebunny/crossref_metadata_2025_split huggingface dataset:
Síndrome de Burnout en médicos residentes de un hospital público de la ciudad de Aregua en el año 2020
Authors: Torres Romero Anthon Daniel , Alcaraz Romero Ivana Araceli 
Published: March 2021

Introducción: El estrés merece especial atención dentro de lo que sería la salud mental, teniendo en cuenta que estados prolongados de estrés podrían acarrear estados depresivos o de ansiedad severos. Las labores hospitalarias son uno de los trabajos de fuente innata para el estrés, este trabajo se enfocará en el estrés en médicos residentes. Objetivo: Determinar el síndrome de Burnout en médicos residentes de un hospital público de la ciudad de Areguá en el año 2020. Material y Método: Estudio observacional descriptivo, de corte transversal, muestra no probabilístico por conveniencia, desde junio hasta agosto de 2020, de 24 encuestas, en el Hospital Nacional del Cáncer (Aregua). Se aplicó Cuestionario de Maslach Burnout Inventory- Healt Service Survey (MBI-HSS). Resultados: Se analizaron 24 encuestas. Edades comprendidas entre 24 y 34 años (28,875±3,0405). Se reportan a 12 residentes con Síndrome de Burnout, equivalente al 54,2% de la muestra. Realización personal baja con 66,7% (16); Agotamiento emocional alto 45,8% (11); Despersonalización alta 50% (12). Discusión: En la presente investigación se encontró que el 54,2% de los residentes encuestados son categorizados con Sindrome de Burnout. Se resalta la investigación de Jacome et al donde el 47,5% de los residentes fueron categorizados con Síndrome de Burnout; mientras que, en el estudio de Estigarribia et al se encontró una baja prevalencia del Sindrome de Burnout, equivalente al 22%; esta diferencia se puede deber al instrumento que fue utilizado en ambos estudios, tratándose del MBI.
An enigmatic specialized new eutherian mammal from the Late Cretaceous of Western Europe (Northern Pyrenees)
Authors: GHEERBRANT Emmanuel , TEODORI Dominique 
Published: March 2021

We report the discovery of a new Late Cretaceous eutherian mammal, Azilestes ragei n. gen., n. sp. from the Mas-d’Azil northern Pyrenean site (France), which is among the largest known. It is only known from a broken lower jaw found in uppermost levels of the Grès de Labarre Formation (early Maastrichtian). Despite its poor preservation, it displays distinctive specialized features with respect to known Cretaceous eutherians. This includes a reduced premolar formula and shortened and robust jaw, an incipient hypolophid, and a cingular-like postcristid and hypoconulid. The phylogenetic analysis suggests indeed a possible stem relationship between Azilestes n. gen. and some clades of herbivorous Cenozoic placentals, but with weak support. Several molar features reminiscent of the Zhelestidae, especially Valentinella Tabuce, Vianey-Liaud & Garcia, 2004, support instead that Azilestes n. gen. is a basal eutherian showing early specialization in a herbivorous diet convergent with some crown placentals. Whatever the suprageneric position of Azilestes n. gen., which remains to be clarified with additional material, its discovery highlights a significant diversity of European Cretaceous eutherians in contrast to their very poor fossil record.
The Impact of Photo Overlap, the Number of Control Points and the Method of Camera Calibration on the Accuracy of 3D Model Reconstruction
Authors: Róg Marta , Rzonca Antoni 
Published: March 2021

This research attempted to determine the optimal photo overlap, number of control points and method of camera calibration for a photogrammetric 3D model reconstruction of an object of cultural heritage value. Terrestrial images of the object were taken with a hand‑held digital camera and processed in the ContextCapture software using the Structure‑from‑Motion (SfM) algorithm. A total station was used to measure ground control points (GCPs) and check points. Here, the research workflow, methodology, and various analyses concerning different configurations of the aforementioned factors are described. An attempt to assess the parameters which should be implemented in order to provide a high degree of accuracy of the model and reduce time‑consumption both during fieldwork and data processing was taken. The manuscript discusses the results of the analyses and compares them with other studies presented by different authors and indicates further potential directions of studies within this scope. Based on the authors’ experience with this research, some general conclusions and remarks concerning the planning of photo acquisition from the terrestrial level for the purpose of 3D model reconstruction were formulated.
Association between uric acid lowering and renal function progression: a longitudinal study
Authors: Liu Liyi , You Lili , Sun Kan , Li Feng , Qi Yiqin , Chen Chaogang , Wang Chuan , Lao Guojuan , Xue Shengneng , Tang Juying , Li Na , Feng Wanting , Yang Chuan , Xu Mingtong , Li Yan , Yan Li , Ren Meng , Lin Diaozhu 
Published: March 2021

Background
This study aimed to explore the association between uric acid lowering and renal function.

Materials and Methods
We conducted a population-based cohort study with 1,534 subjects for 4 years from 2012 to 2016. The population was divided into four groups according to the interquartile range of changes in serum uric acid with quartile 1 representing lower quarter. Renal function decline was defined as eGFR decreased more than 10% from baseline in 2016. Renal function improvement was defined as eGFR increased more than 10% from baseline in 2016. Cox regression analysis was used to calculate the hazard ratio (HR) and 95% confidence interval (CI).

Results
In the adjusted Cox regression models, compared to quartile 4, quartile 1 (HR = 0.64, 95% CI [0.49–0.85]), quartile 2 (HR = 0.65, 95% CI [0.50–0.84]) and quartile 3 (HR = 0.75, 95% CI [0.58–0.96]) have reduced risk of renal function decline. An increasing hazard ratio of renal function improvement was shown in quartile 1 (HR = 2.27, 95% CI [1.45–3.57]) and quartile 2 (HR = 1.78, 95% CI [1.17–2.69]) compared with quartile 4.

Conclusions
Uric acid lowering is associated with changes in renal function. The management of serum uric acid should receive attention in clinical practice and is supposed to be part of the treatment of chronic kidney disease.
Subsoiling increases aggregate-associated organic carbon, dry matter, and maize yield on the North China Plain
Authors: Shen Ying , Zhang Tingting , Cui Jichao , Chen Siyu , Han Huifang , Ning Tangyuan 
Published: March 2021

Background
Soil degradation is one of the main problems in agricultural production and leads to decreases in soil quality and productivity. Improper farming practices speed this process and are therefore not conducive to food security. The North China Plain (NCP) is a key agricultural area that greatly influences food security in China. To explore the effects of different tillage measures on aggregate-associated organic carbon (AOC), the accumulation and transport of dry matter, and maize yield, and to identify the most suitable tillage method for use on the NCP, a field experiment was conducted at Shandong Agricultural University from 2016–2017 using plots that have been farmed using conservation tillage since 2002.

Methods
In this study, Zhengdan 958 summer maize was used as the test material and undisturbed soil and plant samples were obtained under four tillage methods—no-tillage (NT, tillage depth: 0 cm); rotary tillage (RT, tillage depth: 10 cm); conventional tillage (CT, tillage depth: 20 cm); subsoiling (SS, tillage depth: 40 cm)—which were used to determine the AOC and dry matter contents, as well as the yields of two summer maize growing seasons. Each sample was replicated three times and the AOC content was determined via potassium dichromate oxidation colorimetry. Potassium dichromate oxidized organic carbon in organic matter was employed to reduce hexadecent chromium into green trivalent chromium. Colorimetry was then used to determine the amount of reduced trivalent chromium and calculate the organic matter content.

Results
The resulting data were statistically analyzed and the results showed that, compared with CT, the AOC contents with NT and SS increased by 5.65% and 9.73%, respectively, while that with RT decreased by 0.12%. Conventional tillage resulted in the highest mean dry matter weight when the maize reached maturity, which was 19.19%, 9.83%, and 3.38% higher than those achieved using NT, RT, and SS, respectively. No significant difference was found between CT and SS treatments, both of which tended to increase the accumulation of dry matter as well as its contribution of assimilates to grain yield post-anthesis. Compared with CT, the mean yield increased at a rate of 0.18% with SS, while yields declined at rates of 17.17% and 11.15 with NT and RT, respectively. The yield with NT was the lowest, though the harvest indices with NT and SS were higher than those with RT and CT. Overall, SS increased the accumulation of dry matter and its contribution of assimilates to grain yields post-anthesis, as well as the AOC content and yields, making it the ideal tillage method for the NCP.
Quartz‐Enhanced Photoacoustic Spectroscopy for Trace Gas Sensing
Authors: Patimisco Pietro , Spagnolo Vincenzo 
Published: March 2021

Abstract

Photoacoustic spectroscopy (PAS) was established itself over the last decades as a powerful detection technique, capable of measuring trace gas concentrations at part‐per‐billion level. The basic principles of laser PAS are provided with a discussion on photoinduced acoustic wave generation and its detection. Quartz‐enhanced photoacoustic spectroscopy (QEPAS), where a quartz tuning fork (QTF) is used to detect acoustic waves, is presented in detail as an improvement of the conventional microphone‐based PAS. QEPAS does not require an optical detector, requires extremely small volumes, laser wavelength independent, and immune to environmental noise. The discussion covers several aspects of QTF resonance properties, regarding flexural modes, dissipation processes, and quality factor (
Q
‐factor). The main advantages achievable by exploiting custom QTFs for QEPAS sensing and novel approaches such as the excitation of overtone modes are highlighted and discussed. Finally, the most performant QEPAS sensors for real‐world applications are reviewed. Environmental monitoring of CH
4
, CO, and N
2
O and a QEPAS sensor for leak detection in mechatronic systems as well as hydrocarbon detection in petrochemical industry are few examples of QEPAS sensors already tested in out‐of‐laboratory environments. The obtained results clearly demonstrate the potential of QEPAS‐based sensors for in situ operations.
Wireless Dual Stimuli Actuation of Dye Sensitized Conducting Polymer Hybrids
Authors: Melvin Ambrose Ashwin , Gupta Bhavana , Tieriekhov Kostiantyn , Nogala Wojciech , Garrigue Patrick , Reculusa Stephane , Kuhn Alexander 
Published: March 2021

AbstractActuators controlled by external stimuli have received a lot of attention in recent years. Herein a polymer based dual stimuli actuator is reported, triggered by light and an electric field. This allows better control of actuation, enlarging the field of potential applications, like, for example, in the frame of soft robotics. The actuator is composed of polypyrrole and TiO2 modified with methylene blue. In an aqueous solution, the resulting freestanding hybrid film shows reversible actuation due to the synergy of light and an applied electric field. Illumination with light produces electron‐hole pairs in the TiO2 layer, which are shuttled to the opposite ends of the actuator by the potential gradient present in the solution. This results in electrochemical oxidation and reduction reactions at the two extremities and consequently in site selective swelling of the polymer, which finally leads to a controlled motion of the actuator, following the principles of logic gate operations. Such synergistically induced switching allows developing original actuation schemes for performing complex mechanical tasks triggered by more than one stimulus.
Tailoring Single Plasmonic Resonance for RGB‐NIR Imaging Using Nanoimprinted Complementary Plasmonic Structures of Nanohole and Nanodisk Arrays
Authors: Ahn Myeong‐Su , Hwang Charles Soon Hong , Jeong Ki‐Hun 
Published: March 2021

AbstractPlasmonic nanohole arrays (NHA) can serve as an efficient alternative for ultrathin color filters due to their high color tunability, robust stability, and simple nanofabrication. However, the periodic nanostructures inherently exhibit multiple resonances in the visible and near‐infrared ranges. Here large‐area and single‐resonance plasmonic spectral filter for RGB‐NIR imaging using nanoimprinted complementary plasmonic structures (CPS) is reported. The CPS comprise self‐aligned metallic nanohole and nanodisk arrays in regular (rCPS) or inverse (iCPS) configuration, where unfavorable resonances of nanohole arrays are substantially attenuated by an extinction resonance of nanodisk arrays. The experimental results show the CPS exhibit single peaks in 437 (blue), 515 (green), 644 (red), and 912 nm (NIR), respectively. The color purity is highly increased by up to six times and thus the color reproduction range is expanded up to four times, compared to NHA. The CPS spectral filters clearly demonstrate RGB‐NIR tetrachromatic imaging, resulting from the true color imaging and recognition of distinctive NIR features. This unique configuration can serve as large‐scale plasmonic spectral filters that can drive multispectral or hyperspectral imaging applications.
Triflic Acid‐Catalyzed Chemo‐ and Site‐Selective C−H Bond Functionalization of Phenols With 1,3‐Dienes
Authors: Liu Zhenli , Li Guanghui , Yao Tengfei , Zhang Junliang , Liu Lu 
Published: March 2021

AbstractHerein, a Brønsted acid‐catalyzed C(sp2)−H functionalization of free phenols with 1,3‐dienes has been developed. In this transformation, triflic acid promoted C−H bond functionalization under mild conditions in a site‐selective manner.magnified image
Nanoscale Terahertz Monitoring on Multiphase Dynamic Assembly of Nanoparticles under Aqueous Environment
Authors: Yu Eui‐Sang , Lee Sang‐Hun , Lee Geon , Park Q‐Han , Chung Aram J. , Seo Minah , Ryu Yong‐Sang 
Published: March 2021

AbstractProbing the kinetic evolution of nanoparticle (NP) growth in liquids is essential for understanding complex nano‐phases and their corresponding functions. Terahertz (THz) sensing, an emerging technology for next‐generation laser photonics, has been developed with unique photonic features, including label‐free, non‐destructive, and molecular‐specific spectral characteristics. Recently, metasurface‐based sensing platforms have helped trace biomolecules by overcoming low THz absorption cross‐sectional limits. However, the direct probing of THz signals in aqueous environments remains difficult. Here, the authors report that vertically aligned nanogap‐hybridized metasurfaces can efficiently trap traveling NPs in the sensing region, thus enabling us to monitor the real‐time kinetic evolution of NP assemblies in liquids. The THz photonics approach, together with an electric tweezing technique via spatially matching optical hotspots to particle trapping sites with a nanoscale spatial resolution, is highly promising for underwater THz analysis, forging a route toward unraveling the physicochemical events of nature within an ultra‐broadband wavelength regime.
Hierarchical spline for time series prediction: An application to naval ship engine failure rate
Authors: Moon Hyunji , Choi Jinwoo 
Published: March 2021

AbstractPredicting equipment failure is important because it could improve availability and cut down the operating budget. Previous literature has attempted to model failure rate with bathtub‐formed function, Weibull distribution, Bayesian network, or analytic hierarchy process. But these models perform well with a sufficient amount of data and could not incorporate the two salient characteristics: imbalanced category and sharing structure. Hierarchical model has the advantage of partial pooling. The proposed model is based on Bayesian hierarchical B‐spline. Time series of the failure rate of 99 Republic of Korea Naval ships are modeled hierarchically, where each layer corresponds to ship engine, engine type, and engine archetype. As a result of the analysis, the suggested model predicted the failure rate of an entire lifetime accurately in multiple situational conditions, such as prior knowledge of the engine.
Visible Light Induced Solubility Modulation of Polynorbornene Bearing Bridged 1,2‐Diketones
Authors: Kim Kyungrae , Seo Donghwa , Kim Dowan , Lim Jeewoo 
Published: March 2021

AbstractWe herein report the synthesis and photoinduced solubility modulation of a poly(norbornene) bearing bridged 1,2‐diketone units in the repeating unit. Selective irradiation of the n to π* absorption band of the monomer using a blue LED light source emitting at 455 nm lead to a rapid and quantitative decarbonylation at the diketone bridge, yielding the corresponding anthracene derivative. Identical photoinduced decarbonylation was observed in the polymer obtained from the ring‐opening metathesis polymerization (ROMP) of the photoreactive monomer. The polymer displayed photoinduced solubility change wherein irradiation of the polymer solution in various solvent systems with a blue LED light source led to the precipitation of the polymer, producing polymer nanoparticles. The solubility change is attributed to the change in the free volume of the polymer and constitutes a method of photoinduced solubility modulation in which only gaseous byproducts are generated from the photocleavage reaction.
Design of an In‐Cell Protein Crystal for the Environmentally Responsive Construction of a Supramolecular Filament
Authors: Abe Satoshi , Pham Thuc Toan , Negishi Hashiru , Yamashita Keitaro , Hirata Kunio , Ueno Takafumi 
Published: March 2021

AbstractProtein assemblies can be designed for development of nano–bio materials. This has been achieved by modulating protein–protein interactions. However, fabrication of highly ordered protein assemblies remains challenging. Protein crystals, which have highly ordered arrangements of protein molecules, provide useful source matrices for synthesizing artificial protein assemblies. Here, we describe construction of a supramolecular filament structure by engineering covalent and non‐covalent interactions in a protein crystal. Performing in‐cell crystallization of Trypanosoma brucei cysteine protease cathepsin B (TbCatB), we achieved a precise arrangement of protein molecules while suppressing random aggregation due to disulfide bonds. We succeeded in synthesizing bundled filament from the crystals by autoxidation of cysteinyl thiols after the isolation of the crystals from living cells.
Potent Cyclic Tetrapeptide for Lead Detoxification
Authors: Mohammed Tagwa A. , Meier Christoph M. , Kalvoda Tadeáš , Kalt Martina , Rulíšek Lubomír , Shoshan Michal S. 
Published: March 2021

AbstractLead (Pb) is a ubiquitous poisonous metal, affecting the health of vast populations worldwide. Medications to treat Pb poisoning suffer from various limitations and are often toxic owing to insufficient metal selectivity. Here, we report a cyclic tetrapeptide that selectively binds Pb and eradicates its toxic effect on the cellular level, with superior potency than state‐of‐the‐art drugs. The Pb‐peptide complex is remarkably strong and was characterized experimentally and computationally. Accompanied by the lack of toxicity and enhanced stability of this peptide, these qualities indicate its merit as a potential remedy for Pb poisoning.
Redox‐Neutral Selenium‐Catalysed Isomerisation of para‐Hydroxamic Acids into para‐Aminophenols
Authors: Chuang Hsiang‐Yu , Schupp Manuel , Meyrelles Ricardo , Maryasin Boris , Maulide Nuno 
Published: March 2021

AbstractA selenium‐catalysed para‐hydroxylation of N‐aryl‐hydroxamic acids is reported. Mechanistically, the reaction comprises an N−O bond cleavage and consecutive selenium‐induced [2,3]‐rearrangement to deliver para‐hydroxyaniline derivatives. The mechanism is studied through both 18O‐crossover experiments as well as quantum chemical calculations. This redox‐neutral transformation provides an unconventional synthetic approach to para‐aminophenols.
1,3,5‐Triazine: A versatile pharmacophore with diverse biological activities
Authors: Singh Saumya , Mandal Milan K. , Masih Anup , Saha Ashmita , Ghosh Surajit K. , Bhat Hans R. , Singh Udaya P. 
Published: March 2021

Abstract1,3,5‐Triazine and its derivatives have been the epicenter of chemotherapeutic molecules due to their effective biological activities, such as antibacterial, fungicidal, antimalarial, anticancer, antiviral, antimicrobial, anti‐inflammatory, antiamoebic, and antitubercular activities. The present review represents a summarized report of the crucial biological activities possessed by substituted 1,3,5‐triazine derivatives, with special attention to the most potent compounds.
Qualitative and quantitative characterization of municipal waste in Tunisia: a case study of metropolitan Tunis
Authors: Othman Afef Ben , Wafi Taieb , Fattoumi Fatma , Besbes Mongi 
Published: March 2021

AbstractMunicipal solid waste management has evolved into a promising approach to climate issues and to the growing energy demand in Tunisian cities. However, energy recovery from organic waste in the Metropolis of Tunis is still complex. This is due to the city's unpredictable economy, urbanization level, and population growth rates. So far, this unpredictability has constrained access to accurate data about organic waste. This has led to slow progress in harnessing organic waste for renewable energy production. This study focuses on the conversion of the city's organic waste to biogas as a local energy supply. The potential quantity of organic waste and its theoretical energy content were estimated based on a case study in four areas in the Metropolis encompassing 12 municipalities, official records, and literature reviews. The aim of this mixed method was to enhance data quality and optimize the long‐term viability of a small‐scale biogas plant in the city. The results show that the area generates a considerable amount of organic waste (55–66%) with an annual theoretical energy content of 224.18 GWh. The yearly financial gain from the 25.5 MW biogas plant could reach 40 352 400 USD. The estimated organic waste with its considerable potential energy content represents a significant renewable energy source in the Metropolis of Tunis. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd