bluuebunny/crossref_metadata_2025_split huggingface dataset:
Uso de los juegos serios como una herramienta interactiva para el aprendizaje significativo de la cátedra de la paz
Authors: Bravo Sánchez Flor Ángela , Ruiz Gómez Linda Johana 
Published: May 2018

El artículo analiza el uso de los juegos serios como una herramienta interactiva que contribuya al aprendizaje significativo de las temáticas propuestas para la Cátedra de la Paz, reglamentada en Colombia por la Ley 1732 del 2014; a través de los juegos serios se pueden construir contextos que enfaticen el aprendizaje activo y significativo de las diferentes temáticas de la cátedra. Se presenta también una revisión de los videojuegos educativos existentes, se mencionan algunas experiencias educativas con los juegos serios y posteriormente se habla de su pertinencia con las temáticas de la cátedra. Además, se muestra un ejemplo de aplicación de un juego serio para promover la convivencia pacífica y respetuosa. Finalmente, se brindan sugerencias sobre el uso de los juegos serios en el proceso de enseñanza y aprendizaje de la Cátedra de la Paz.
Spatial and temporal distribution of submerged aquatic vegetation in a tropical coastal lagoon habitat in Viet Nam
Authors: Phan T.T. Hang , Stiers Iris , Nguyen T.T. Huong , Pham T. Tuyet , Ton T. Phap , Luong Q. Doc , Triest Ludwig 
Published: May 2018

AbstractSubmerged aquatic vegetation (SAV) is considered as a keystone habitat, contributing significantly to structure and function of coastal lagoons. However, limited understanding of the factors driving SAV distribution and abundance across a wide range of salinity in tropical coastal lagoons has restricted the effectiveness of managing and preserving the ecosystem services in coastal lagoon habitats. This study examined the distribution and abundance of SAV species in the growing season in relation to water physico-chemical variables and grain sizes of sediment types in a tropical lagoon in Viet Nam. The results revealed thatNajas indicaandHalophila beccariiwere the dominant species in the community of 7 SAV species, accounting for 70% of the total cover and 55% of the total biomass sampled. Variation partitioning showed that both water and sediment variables were important in explaining spatial distribution and abundance of SAV species across the coastal lagoon. Salinity was the most significant predictor variable that accounted for the variation of SAV species data. The study implied that changes of salinity and silt (versus sand) particles can lead to different SAV assemblages in the lagoon.
Evaluation of a novel prognostic score based on thrombosis and inflammation in patients with sepsis: a retrospective cohort study
Authors: Li Dongze , Zhou Yaxiong , Yu Jing , Yu Haifang , Xia Yiqin , Zhang Lin , Wu William K. K. , Zeng Zhi , Yao Rong , Cao Yu 
Published: May 2018

Abstract

Background:
Inflammation and thrombosis are involved in the development and progression of sepsis. A novel thrombo-inflammatory prognostic score (TIPS), based on both an inflammatory and a thrombus biomarker, was assessed for its ability to predict adverse outcomes of sepsis patients in the emergency department (ED).

Methods:
This was a retrospective cohort study of sepsis patients. TIPS (range: 0–2) was predictive of adverse outcomes. Multivariable logistic regression analyses were performed to investigate the associations between TIPS and 28-day adverse outcomes. The study end points were mortality, mechanical ventilation (MV), consciousness disorder (CD) and admission to the intensive care unit (AICU).

Results:
In total, 821 sepsis patients were enrolled; 173 patients died within the 28-day follow-up period. Procalcitonin and D-dimer values were used to calculate TIPS because they had the best performance in the prediction of 28-day mortality by receiver operating characteristic curves. The 28-day mortality and the incidence of MV, CD and AICU were significantly higher in patients with higher TIPS. Multivariable logistic regression analysis indicated TIPS was an independent predictor of 28-day mortality, MV and AICU. TIPS performed better than other prognostic scores, including quick sequential organ failure assessment, Modified Early Warning Score and Mortality in Emergency Department Sepsis Score for predicting 28-day mortality, and similar to the Acute Physiology and Chronic Health Evaluation II, but inferior to sequential organ failure assessment.

Conclusions:
TIPS is useful for stratifying the risk of adverse clinical outcomes in sepsis patients shortly after admission to the ED.
Long non-coding RNA-mediated regulation of signaling pathways in gastric cancer
Authors: Zong Wei , Ju Shaoqing , Jing Rongrong , Cui Ming 
Published: May 2018

Abstract
Gastric cancer (GC) is one of the most common cancers globally. Because of the high frequency of tumor recurrence, or metastasis, after surgical resection, the prognosis of patients with GC is poor. Therefore, exploring the mechanisms underlying GC is of great importance. Recently, accumulating evidence has begun to show that dysregulated long non-coding RNAs (lncRNAs) participate in the progression of GC via several typical signaling pathways, such as the AKT and MAPK signaling pathways. Moreover, the interactions between lncRNAs and microRNAs appear to represent a novel mechanism in the pathogenesis of GC. This review provides a synopsis of the latest research relating to lncRNAs and associated signaling pathways in GC.
Alternating constructions with ditransitivegebenin present-day German
Authors: De Vaere Hilde , De Cuypere Ludovic , Willems Klaas 
Published: May 2018

AbstractThis paper reports on a corpus-based investigation of the verbgebenin two alternating ditransitive constructions in present-day German with theRecipienteither coded in the dative case (the indirect object construction, abbreviated: IOC) or by means of the PPan+ accusative case (the prepositional object construction, POC). The study is based on a quantitative analysis ofN=1,301 sentences (712 IOC and 589 POC) drawn from theDeutsche Referenzkorpus(IDS, Mannheim) which were annotated for 20 factors. Using a logistic regression analysis, we found evidence for the effect of 10 predictors (bootstrapped C-index=95%). We discuss our results in comparison to corpus-based research of the English dative alternation and point to some notable differences between both languages. In German, POC appears to be strongly correlated with collectiverecipients, collectiveagents, passive voice, and concrete and propositional transfer senses of the main verbgeben. With regard to the semantics ofgeben, we argue that the quantitative findings are best accounted for on the basis of a general underspecified verb meaning ‘gebentransfer’ that does not yet differentiate between the three possible verb senses (concrete, abstract, and propositional).
Intersections of two Grassmannians in ℙ9
Authors: Borisov Lev A. , Căldăraru Andrei , Perry Alexander 
Published: May 2018

Abstract
We study the intersection of two copies of

Gr
⁢

(
2
,
5
)

{\mathrm{Gr}(2,5)}

embedded
in

ℙ
9

{{{\mathbb{P}}}^{9}}

, and the intersection of the two projectively dual Grassmannians
in the dual projective space.
These intersections are deformation equivalent,
derived equivalent Calabi–Yau threefolds.
We prove that generically they are not birational.
As a consequence, we obtain a counterexample to the birational Torelli problem for
Calabi–Yau threefolds.
We also show that these threefolds give a new pair of varieties whose
classes in the Grothendieck ring of varieties are not equal, but whose difference
is annihilated by a power of the class of the affine line.
Our proof of non-birationality
involves a detailed study of the moduli stack of
Calabi–Yau threefolds of the above type, which may be of independent interest.
Production of bio-aromatics from ethanol-waste cooking oil mixtures over ZSM-5 catalyst material
Authors: Ganda Elvis Tinashe , Isa Yusuf Makarfi 
Published: May 2018

Abstract
The utilisation of ethanol-waste cooking oil (Eth- WCO) mixtures for the production of valuable chemicals has been considered. The study investigated the potential of synthesised HZSM-5 in the conversion of ethanol-oil mixtures to fuel-range hydrocarbons. HZSM-5 catalyst material was successfully synthesised and characterised and activities were tested in a fixed-bed reactor unit at temperatures of 400°C and 450 °C with a fixed weight hourly space velocity of 2.5 h-1 at atmospheric pressure. The synthesised catalyst had total surface area greater than 250 m2/g. From the catalyst activity test, it was observed that up to 93% conversion was achieved on the synthesised catalysts. The conversion product was rich in aromatic compounds such as p-xylene, toluene and naphthalene that have potential as feedstock in the chemical and petrochemical industries. The FeZSM-5 catalyst material had a generally higher percentage composition of p-xylene content, peaking at 30% at 400°C for pure waste cooking oil feedstock. Potential catalysts for bio-aromatics production from ethanol-waste cooking oil mixtures have been successfully synthesised and evaluated.
Blood sample quality
Authors: Lippi Giuseppe , von Meyer Alexander , Cadamuro Janne , Simundic Ana-Maria 
Published: May 2018

Abstract
Several lines of evidence now confirm that the vast majority of errors in laboratory medicine occur in the extra-analytical phases of the total testing processing, especially in the preanalytical phase. Most importantly, the collection of unsuitable specimens for testing (either due to inappropriate volume or quality) is by far the most frequent source of all laboratory errors, thus calling for urgent strategies for improving blood sample quality and managing data potentially generated measuring unsuitable specimens. A comprehensive overview of scientific literature leads us to conclude that hemolyzed samples are the most frequent cause of specimen non-conformity in clinical laboratories (40–70%), followed by insufficient or inappropriate sample volume (10–20%), biological samples collected in the wrong container (5–15%) and undue clotting (5–10%). Less frequent causes of impaired sample quality include contamination by infusion fluids (i.e. most often saline or glucose solutions), cross-contamination of blood tubes additives, inappropriate sample storage conditions or repeated freezing-thawing cycles. Therefore, this article is aimed to summarize the current evidence about the most frequent types of unsuitable blood samples, along with tentative recommendations on how to prevent or manage these preanalytical non-conformities.
Meta-linked cationic poly(pyridinylene vinylene) conjugated polyelectrolytes: solution photophysics and fluorescent sensing of metal ions
Authors: Hu Zijun , Ni Yifeng , Huang Li , Jiang Xueyu , Yang Xiaoyun , Li Chenglei , Wu Qi , Zeng Xianyin , Liu Kuan 
Published: May 2018

Abstract
Two novel poly(pyridinylene vinylene) (PPV)-type conjugated polyelectrolytes 2,6-PPYPV-(2+) and 3,5-PPYPV-(2+) were synthesized via Heck coupling reaction and characterized by 1H nuclear magnetic resonance (NMR), ultraviolet-visible (UV-Vis) and photoluminescence (PL) spectroscopy. The two polymers consisting of meta-position substituted pyridinylenes as the metal recognition unit and a water-soluble divinyl-benzene derivative in the backbones. 2,6-PPYPV-(2+) and 3,5-PPYPV-(2+) both exhibit strongest fluorescence in methanol and weakest fluorescence in water among common polar solvents. In respect of ion detection, 3,5-PPYPV-(2+) has an excellent identifiability for Pd2+ in methanol with the K_SV value of 1.1×105
m
−1 while 2,6-PPYPV-(2+) has a good selectivity for Cu2+ and Hg2+ in aqueous solution. And all the Stern-Volmer plots of 2,6-PPYPV-(2+) and 3,5-PPYPV-(2+) in fluorescence quenching for metal ions have favorable tendencies. All the results suggest that 2,6-PPYPV-(2+) and 3,5-PPYPV-(2+) are promising materials in the applications of high performance chemosensors for some specific metal ions.
Environmentally benign chemical recycling of polycarbonate wastes: comparison of micro- and nano-TiO2 solid support efficiencies
Authors: Emami Samira , Alavi Nikje Mir Mohammad 
Published: May 2018

Abstract
Polycarbonate (PC) wastes, including optical discs (CDs) and digital optical discs (DVDs), were chemically recycled into valuable materials such as 4,4′-(propane-2,2-diyl)diphenol (BPA) and etherified derivatives of BPA using sodium hydroxide (NaOH) as the alkali metal catalyst and nanostructured titanium dioxide (nano-TiO2) and microstructured titanium dioxide (micro-TiO2) as the solid supports in the binary green system consisting of water and 2,2′-oxydi(ethan-1-ol) (DEG) under conventional heating method, and data were compared. In this study, the effects of various parameters, such as solvent composition, concentration of NaOH, and solid support, were studied on the reaction progress. In these reactions, the importance of water as the green solvent was investigated in achieving pure BPA as the valuable material. When used with 20% aqueous DEG (pbw), a pure BPA can be obtained at 70% yield in the presence of nano-TiO2 and micro-TiO2 as the solid supports. According to the results, the use of nano-TiO2 in comparison with micro-TiO2 accelerates the chemical recycling of PC wastes. The nano-TiO2 catalyst recovery shows that the recovered solid support is applicable for four cycles. The obtained products were characterized using spectroscopic methods, namely, 1H NMR, 13C NMR, and Fourier transform infrared spectroscopy as well as gas chromatography-mass spectrometry.
Isolation of secondary metabolites from Stenochlaena palustris stems and structure-activity relationships of 20-hydroxyecdysone derivatives on antitermite activity
Authors: Pardede Antoni , Adfa Morina , Kusnanda Arif Juliari , Ninomiya Masayuki , Koketsu Mamoru 
Published: May 2018

AbstractStenochlaena palustrisis an edible fern, belonging to the Blechnaceae family and is called kelakai in South Kalimantan, Indonesia. The effects of fractions ofS. palustrisstems and isolated constituents on termite mortality and paper disc consumption byCoptotermes curvignathushave been studied. Treatment of the ethyl acetate (EtOAc) fraction on paper discs greatly induced death ofC. curvignathuswithin 6 days. Our phytochemical investigation ofS. palustrisstems led to the isolation of major constituents and 20-hydroxyecdysone exerted the highest termiticidal activity, followed by stenopalustroside A and ajugasterone C. Moreover, the structure-activity relationships (SAR) of synthetic derivatives from 20-hydroxyecdysone and ajugasterone C suggested that a 2,3-diol has considerable effect on their antitermite properties againstC. curvignathus.
Integrated training (practicing, peer clinical training and OSCE assessment): a ladder to promote learning and training
Authors: Dehghan Mahlegha , Heidari Fatemeh Ghaedi , Karzari Zahra , Shahrbabaki Parvin Mangolian 
Published: May 2018

AbstractIntroductionThe teaching-learning process plays an effective role in training nursing students. Devising novel methods can lead to achievement of educational objectives as well as promotion of the clinical and practical training. The present study is aimed to determine the effect of integrated training, including practicing, peer clinical training and objective structured clinical examination (OSCE) assessment.MethodsThe interventional study was conducted on 58 freshman students. Two groups underwent a five-stage educational process; so that, all the students were trained and practiced in the skills lab, and their practical skills were investigated via the OSCE test. Afterwards, for clinical training in hospital, they were randomly divided into two groups of routine training (n = 26) and the peer-learning method (n = 32). Subsequently, in order to investigate the outcomes of the process, the OSCE test scores of the two training groups were compared both before and after the apprenticeship course.ResultsScores of all the students were increased significantly at the end of the semester, but in terms of the total score of the clinical skills (14.79 ± 1.52 vs. 18.52 ± 0.84), the difference was insignificant (p = 0.29).ConclusionTraining clinical skills along with OSCE practice and assessment can improve the nursing students’ learning as well as their practical and clinical performance. Improvement of the students’ performance can lead to high-quality care nursing.
Development of a Novel Kinetic Model for Cocoa Fermentation Applying the Evolutionary Optimization Approach
Authors: López-Pérez Pablo A. , Cuervo-Parra Jaime A. , Robles-Olvera Víctor José , Del C Rodriguez Jimenes Guadalupe , Pérez España Victor H. , Romero-Cortes Teresa 
Published: May 2018

AbstractTraditional Mexican cocoa fermentation performed in batch was studied by applying kinetic modelling with experimental validation. Similar microbiological behaviour was observed up to 60 h, with a temperature increase at 72 h that remained constant (50 °C) until 156 h. Metabolite-production kinetics (ethanol and acetic acid) from degradable mucilage (glucose) was explored. Exploration involved applying different combinations of unstructured growth models, in order to consider the effect of temperature when predicting the concentration of metabolites in these microorganisms. Two methods were used to optimize model parameters: the Levenberg–Marquardt optimization approach and Genetic Algorithms (GAs). GAs which could be used to scale up the fermentation process indicated the applicability of this model for predicting fermentation quality. The maximum specific rate average for μmaxand saturation constant (Ks) were 0.0961 h−1and 1.4 mg/g m.s., respectively. The results obtained indicate the expediency of this technique for future application in the design and control of batch fermentation.
Chemical composition and antioxidant activity of phenolic compounds and essential oils from Calamintha nepeta L.
Authors: Khodja Nabyla Khaled , Boulekbache Lila , Chegdani Fatima , Dahmani Karima , Bennis Faiza , Madani Khodir 
Published: May 2018

Abstract

Background
Essential oils, infusion and decoction extracts of Calamintha nepeta L. were evaluated for their bioactive substances (polyphenols and essential oils) and antioxidant activities.

Methods
The amounts of phenolic compounds were determined by colorimetric assays and identified by high performance and liquid chromatography coupled with ultraviolet detector (HPLC-UV) method. The chemical composition of essential oils was determined by gas-chromatography coupled with mass spectrometry (GC/MS) method. For the evaluation of the antioxidant activity of essential oils and extracts, two different assays (reducing power and DPPH radical scavenging activity) were used.

Results
Infusion extract presented the highest phenolic content, followed by the decoction one, while the lowest amount was observed in essential oils. The amount of flavonoids of the decocted extract was higher than that of the infused one. The phenolic profile of C. nepeta infusion and decoction extracts revealed the presence of 28 and 13 peaks, respectively. Four phenolics compounds were identified in infusion (gallic acid (GA), rosmarinic acid (RA), caffeine (C) and caffeic acid (CA)) and two were identified in decoction (GA and RA). The chemical composition of essential oils revealed the presence of 29 compounds, accounting for the 99.7% of the total oils. Major compounds of essential oil (EO) were trans-menthone (50.06%) and pulegone (33.46%). Infusion and decoction extracts revealed an interesting antioxidant activity which correlates positively with their total phenolic contents.

Conclusions
These results showed that Calamintha nepeta could be considered as a valuable source of phenolics and essential oils with potent antioxidant activity.
Groups with a p-element acting with a single non-trivial Jordan block on a simple module in characteristic p
Authors: Craven David A. 
Published: May 2018

Abstract
Let V be a vector space over a field of characteristic p. In this paper we complete the classification of all irreducible subgroups G of

GL
⁢

(
V
)

{\mathrm{GL}(V)}

that contain a p-element whose Jordan normal form has exactly one non-trivial block, and possibly multiple trivial blocks. Broadly speaking, such a group acting primitively is a classical group acting on a symmetric power of a natural module, a 7-dimensional orthogonal group acting on the 8-dimensional spin module, a complex reflection group acting on a reflection representation, or one of a small number of other examples, predominantly with a self-centralizing cyclic Sylow p-subgroup.
Optimization analysis of the inverse coefficient problem for the nonlinear convection-diffusion-reaction equation
Authors: Brizitskii Roman V. , Saritskaya Zhanna Y. 
Published: May 2018

Abstract
The inverse coefficient problem for the nonlinear
convection-diffusion-reaction equation is considered.
A velocity vector and a mass-transfer coefficient are considered as the unknown coefficients and are recovered with the help of the
additional information about the boundary value problem’s solution.
The inverse coefficient problem is reduced to a two-parameter problem of multiplicative control,
the solvability of which is proved in a general form.
For a cubic reaction coefficient the local stability estimates of the control problem’s solutions
are obtained regarding to a rather small perturbation of either the cost functional or
the specified functions of the boundary value problem.
Soliton Pulse Generation for WDM-Based Free Space Optics Communication Using Microring Resonators
Authors: Shahidinejad Ali 
Published: May 2018

Abstract
A microring resonator (MRR) and an add/drop devices are presented to generate picosecond solitonic pulse and signal as multichannel localized wavelengths, applicable for WDM-based free space optics (FSO) communication. A Gaussian pulse is inputted to the first ring resonator of the proposed system. Because of the nonlinear Kerr effect, chaotic signals are created. The second MRR filters the generated signals and shape solitonic pulses, where the accurate FWHM of 20 ps with intensity of 2.45 W are obtained. The add/drop device is applied for tuning the solitonic pulses. Results indicate that a range of solitonic wavelengths from 1550 nm to 1600 nm are obtained, where FSR and FWHM are 144 pm and 5 pm, respectively. Finally, performance of the proposed MRR system is evaluated in terms of bit error rate (BER) and Q factor. In the analysis, the proposed solitonic pulse is compared to conventional counterparts. Using the proposed MRR system, BER and Q factor of WDM-based FSO are considerably improved.