bluuebunny/crossref_metadata_2025_split huggingface dataset:
Stabilization of clayey soil for subgrade using rice husk ash (RHA) and sugarcane bagasse ash (SCBA)
Authors: Hidalgo F. , Saavedra J , Fernandez C , Duran G 
Published: February 2020

Abstract
This document studies the stabilization of the soil used as a subgrade, by adding locally available materials such as rice husk ash (RHA) and sugarcane bagasse ash (SCBA). These aggregates were added to the soil in substitution by weight between 5%, 7.5% and 10%. By adding these, the expansiveness is reduced while the maximum dry density increases, in addition the tendency of CBR is increasing and then tends to decrease proportionally to the addition of the aforementioned aggregates. This indicates a peak in CBR and expandability. The best result obtained from CBR was 33.75% with the 5% replacement mixtures.
Control of fissures generated by the retraction in rigid pavements, applying synthetic fibers of recycled polypropylene.
Authors: Torres V , Chirinos K , Cuervo C 
Published: February 2020

Abstract
The retraction affects the setting process and the useful life of the concrete with the appearance of fissures; in last year’s studies and methods have been generated to mitigate and control it with the use of different products and applications. The development of road infrastructure with the use of concrete as a rolling folder, requires methods to guarantee the durability and reduce the effects of the efforts incorporated by the use, climatic conditions, support base and restrictions of movement of the structure. To evaluate the effects of recycled synthetic polypropylene fibers in plastic retraction tests (ASTM C 1579), 3 mix designs were prepared with different ratios 58 gr., 116 gr., and 176 gr. of recycled and virgin synthetic fibers; the most significant and positive result to reduce fissures without affecting the resistance of concrete by bending and compression, was 0.50 mm without addition fibers, 0.10 mm and 0.15 mm with 176 gr. of virgin and recycled synthetic fibers. Finally, it can be concluded that adding a ratio of 4 kg per m3 allows good workability, in addition, the costs of the fibers are not representative compared to the high costs for future repairs.
Photocatalytic Activity of Cu-based Nanoparticles Synthesized by Glycine-Nitrate Combustion Technique
Authors: Cheng Hsuhui , Jang Liangwei , Chen Shiaoshing , Chen Huamin 
Published: February 2020

AbstractThe copper based nanoparticles was synthesized by glycine-nitrate process (GNP), using copper nitrate trihydrate [Cu(NO3)2· 3H2O] as main starting materials and glycine [C2H5NO2] as complexant and incendiary agent. The as-prepared powders were characterized by X-ray diffraction (XRD), and scanning electron microscopy (SEM) techniques. Results of the photocatalytic degradation of Nonylphenol polyethoxylates (NP9EO) in a custom-made photoreactor indicated that the maximum degradation (more than 94% and 70% TOD removal) of NP9EO occurred with CuO+Cu2O composite catalyst (dosage of 0.3 g/L) when a combination of ultraviolet (UV) irradiation for 600 min, and a heterogeneous system was used.
Combined opto-mechanical measurements with the transparent indenter’s tip
Authors: Maslenikov I , Useinov A 
Published: February 2020

Abstract
Transparent indenter’s tip proposed elsewhere allows to observe sample surface before, after and during an indentation measurements. Such an ability allows not only to select the indentation with the real-time optic image and observe residual imprints, but also conduct spectroscopic measurements. Current work shows an examples of the tip application, in particular the possibility to observe a cracks during a scratching.
Experimental study of the mechanical effect of a clayey soil by adding rubber powder for geotechnical applications
Authors: Alvarez N , Gutierrez J , Duran G , Pacheco L 
Published: February 2020

Abstract
At present, worrying quantities of tires are discarded due to the growth in demand for vehicles in the world, which has a direct impact on the deterioration of the environment since they normally go to landfills. Based on the background found, the use of this material for geotechnical applications can help reduce the pollution they generate and improve the physical and mechanical properties of soils. Therefore, this research seeks to evaluate a greater shear strength and capacity of support to the penetration of the clayey soil by means of the addition of 1.5%, 2.5% and 3.5% of rubber powder recycled. For this, the Atterberg limits analysis, the modified proctor compaction test, shear box and CBR were performed. For the shear box test, the results reflect that the cohesion of the mixture increased and the angle of internal friction decreased with respect to the natural soil, resulting in the sum in an increase of shear strength. On the other hand, the percentage of CBR increased, this means that the rubber helped the soil to be more rigid and have a greater resistance to penetration. These mixtures could be used in different projects within geotechnical engineering, as it presents an improvement in shear strength and an acceptable support index value (CBR).
Evaporation processes of alloying components duringwire-arcdeposition of aluminum alloy 5056
Authors: Salomatova E.S. , Kartashev M.F. , Trushnikov D.N. , Permykov G.L. , Olshanskaya T.V. , Abashev I.R. , Fedoseeva E.M. , Koleva E.G. 
Published: February 2020

Abstract
Additive manufacturing technologies are developing fast world wide. Never the less, in the machine-building industry, manufacturing of especially large products is required, and common processes, for example, selective laser melting, are not able to satisfy this requirement. Multilayer wire-arc deposition, allows to make high-quality large-scale products. In addition, the productivity of wire-arc deposition is many times higher than the productivity of powder additive manufacturing. Never the less, the metal obtained by this method is likely to lose easily evaporated alloying elements, which is mainly due to excessive heat and high deposition rates. This process leads to reduced mechanical properties of the deposited metal. The paper presents the results of chemical analysis of the sample obtained by CMT deposition of aluminum alloy 5056.It was revealed that during wire-arc deposition there is evaporation of some alloy components, for example magnesium. A nonlinear theoretical model of nonequilibrium processes in the liquid phase of the deposited metal and the processes of evaporation of chemical easily evaporated elements in the zone of influence of the heating source of wire-arc deposition is presented. Verification of the model was carried out by studying the chemical composition of the samples. During X-ray fluorescence analysis, reduced magnesium content of the first deposited layer was revealed. Increase in the magnesium content was in the upper deposited layers
Effect of superplasticizer in anti-washout admixture on paste
Authors: Zhang Ming , Wang Wuxiang 
Published: February 2020

Abstract
Anti-washout admixture used for anti-washout underwater concrete is composed of flocculant (e.g., paste stabilizer), superplasticizer, setting retarder, strengthening agent, etc. Good compatibility among those constitutes is necessary to release the vast material potential of anti-washout admixture. In the study, effects of polycarboxylate superplasticizer on fresh cement paste mixed paste stabilizer of various ionic type were experimentally investigated. Based on the experimental results, the optimizations on the ionic type and molecular weight of paste stabilizer, regarding the compatibility with polycarboxylate superplasticizer, were hence obtained. Additionally, suitable content ranges of polycarboxylate superplasticizer, molecular weight and content of paste stabilizer have been determined through systematic tests, such as saturation point test, fluidity test, and anti-washout test.
Study on anti-permeability of specified density concrete
Authors: Yan Shuaishuai , Zhang Ming 
Published: February 2020

Abstract
Anti-permeability is one of critical properties of concrete, as a porous material, ceramsite in specified density concrete leads to many performance changes compare with ordinary concrete, such as mechanical properties, volume stability, durability, et al. combined with micro-test technology, this study investigated the effect of replacement rate and pre-wetting degree of ceramsite, water to binder (W/B) ratio, the content of fly ash, and the composite of aggregate on specified density concrete, and concluded appropriate range of above narrated factors.
Characteristic enhancement of InGaN-based light emitting diodes grown on pattern sapphire substrates
Authors: Wang Huanyou , Jin Gui , Tan Qiaolai 
Published: February 2020

Abstract
Blue light-emitting diodes (LEDs) with an InGaN multi-quantum well (MQW) structure were fabricated on cone-shaped patterned sapphire substrate (PSS) using a single growth process of metal organic chemical vapor deposition (MOCVD). The PSS was proved to be an efficient method to decrease the threading dislocation (TD) density in GaN epifilm with the lateral growth mode on PSS. The LED designed on PSS increased the electroluminescene (EL) intensity. The internal quantum efficiency is increased by reducing the dislocation density, and light extraction efficiency is also enhanced owing to PSS.
Preparation of Eu(Avobenzone)3TPPO by precipitation method and its luminescence performance
Authors: Wei X Z , Gao S S , Tang P S , Zhang L Q , Hou R P , Chen H F 
Published: February 2020

Abstract
Using Eu2O3 as raw material, anhydrous ethanol as solvent system, 1-(4-Methoxyphenyl)-3-(4-tert-butylphenyl)-1,3-propanedione (Avobenzone) as first ligands and triphenylphosphane oxide (TPPO) as second ligands, the rare earth complex Eu(Avobenzone)3TPPO has been successfully prepared by precipitation method. The Eu(Avobenzone)3TPPO were characterized by fluorescence spectrum analysis (FS), Fourier transform infrared spectroscopy(FT-IR) and color coordinate calculation. The thermal stability of Eu(Avobenzone)3TPPO was studied by thermogravimetry differential scanning calorimetry (TG-DSC). The results showed that Eu(Avobenzone)3TPPO emitted strong red characteristic fluorescence, the optimal excitation wavelength was 397nm, the characteristic emission wavelength was 612 nm, and the color coordinates were (0.66, 0.34). Eu(Avobenzone)3TPPO decomposes at about 200°C it shows good thermal stability.
The performance of a novel inorganic organic composite drilling fluids loss reducer AM/AA/GO
Authors: Chen Xiuping , Zhang Yunyue , Fan Sheng , Du Weichao 
Published: February 2020

Abstract
In this paper, an inorganic/organic water-based drilling fluids reducer AM/AA/GO was prepared by using acrylamide (AM), acrylic acid (AA) and graphene oxide (GO) as raw material. Performance evaluation showed that the AM/AA/GO has an excellent filtration loss reduce performance. It has a good salt resistance performance and its temperatures resistance ability was up to 140 °C. The comprehensive results showed that AM/AA/GO is expected to be used in anti-collapse water-based drilling fluids.
Low velocity impact analysis of high-order rectangular FG-CNTRC plates using the weak form QEM
Authors: Di Baojun , Hu Qigao , Shen Zhiqiang , Zhang Wei , Wang Chongxu 
Published: February 2020

Abstract
The functionally graded carbon nanotubes reinforced composites (FG-CNTRC) plates have excellent properties and broad application prospects. In the analysis of low velocity impact response of functionally graded carbon nanotubes reinforced composite plates, innovative numerical formulations are urgently needed. As a new high-order numerical method, the weak form quadrature element method (QEM) has its unique advantages and has been widely used in the engineering structural field. In this paper, the nonlinear Hertzian contact law is employed to describe the impact process between a rigid impactor and the rectangular FG-CNTRC plate, that was modelled with the Reddy’s high-order shear deformation theory. By using the weak form QEM, the calculation model for the impact system is established, and the numerical solution is carried out with the help of Newmark-β step-by-step time domain integration method and Newton-Raphson iteration technology. The effectiveness and accuracy of the weak form QEM formulation were verified through the comparison with the existing literature and the relevant low velocity impact properties of FG-CNTRC plate are explored.
Poetic Resistances and the Indian Occupation of Alcatraz
Authors: Hickey Alanna 
Published: February 2020

AbstractThis essay examines the literary writings produced by Native activists during the 1969–71 Indian Occupation of Alcatraz. Analyzing the contentious historiography of the Occupation, I argue that the activists on the island (who collectively called themselves the Indians of All Tribes) deftly invested in media forms that could contest false narrative accounts reported from the mainland. I follow the circulation of poetry written on the island through its print life in the Indians of All Tribes Newsletter, a literary and informational bulletin composed on Alcatraz, in which activists articulated plans to expand Native-controlled literary and art markets as a financial basis for self-determination. Reading through two archival collections from the Indians of All Tribes in relation to ongoing Native community-building in the Bay Area, I argue that, then and now, the Bay Area Native community has strategically and suspiciously engaged with a consumer base marked by a seemingly bottomless appetite for Native media and a disregard for Native sovereignty.
Integrated querying and version control of context-specific biological networks
Authors: Cowman Tyler , Coşkun Mustafa , Grama Ananth , Koyutürk Mehmet 
Published: March 2020

AbstractMotivationBiomolecular data stored in public databases is increasingly specialized to organisms, context/pathology and tissue type, potentially resulting in significant overhead for analyses. These networks are often specializations of generic interaction sets, presenting opportunities for reducing storage and computational cost. Therefore, it is desirable to develop effective compression and storage techniques, along with efficient algorithms and a flexible query interface capable of operating on compressed data structures. Current graph databases offer varying levels of support for network integration. However, these solutions do not provide efficient methods for the storage and querying of versioned networks.ResultsWe present VerTIoN, a framework consisting of novel data structures and associated query mechanisms for integrated querying of versioned context-specific biological networks. As a use case for our framework, we study network proximity queries in which the user can select and compose a combination of tissue-specific and generic networks. Using our compressed version tree data structure, in conjunction with state-of-the-art numerical techniques, we demonstrate real-time querying of large network databases.ConclusionOur results show that it is possible to support flexible queries defined on heterogeneous networks composed at query time while drastically reducing response time for multiple simultaneous queries. The flexibility offered by VerTIoN in composing integrated network versions opens significant new avenues for the utilization of ever increasing volume of context-specific network data in a broad range of biomedical applications.Availability and ImplementationVerTIoN is implemented as a C++ library and is available at http://compbio.case.edu/omics/software/vertion and https://github.com/tjcowman/vertionContacttyler.cowman@case.edu
Comparison of interleukin-6, C-reactive protein, and low-density lipoprotein cholesterol as biomarkers of residual risk in contemporary practice: secondary analyses from the Cardiovascular Inflammation Reduction Trial
Authors: Ridker Paul M , MacFadyen Jean G , Glynn Robert J , Bradwin Gary , Hasan Ahmed A , Rifai Nader 
Published: March 2020

Abstract

Aims
In epidemiologic cohorts initiated &gt;30 years ago, inflammatory biomarkers, such as interleukin-6 (IL-6) and high-sensitivity C-reactive protein (hsCRP) were shown to independently predict future cardiovascular events with a magnitude of effect comparable to that of low-density lipoprotein cholesterol (LDLC). Whether aggressive contemporary therapy for atherosclerosis has altered these relationships is unknown yet has major implications for future drug development.

Methods and results
Interleukin-6, hsCRP, and LDLC were measured at baseline in up to 4168 North American patients enrolled in the contemporary Cardiovascular Inflammation Reduction Trial with prior myocardial infarction or multivessel coronary disease who additionally had diabetes or metabolic syndrome and were followed for a period of up to 5 years for incident major recurrent cardiovascular events and all-cause mortality. Three-quarters of the cohort were previously revascularized and the great majority was taking statins, angiotensin blocking agents, beta-blockers, and antithrombotic agents. Participants were randomly allocated to low-dose methotrexate 15 mg weekly or to placebo. Randomized use of methotrexate had no effect on event rates nor plasma levels of IL-6, hsCRP, or LDL over time. Yet, baseline levels of IL-6, hsCRP, and LDLC were all predictors of major recurrent cardiovascular events; adjusted hazard ratios [HR; 95% confidence interval (CI)] for the lowest to highest baseline quartiles of IL-6 were 1.0 (referent), 1.66 (1.18–2.35), 1.92 (1.36–2.70), and 2.11 (1.49–2.99; P &lt; 0.0001), while adjusted HRs for increasing quartiles of hsCRP were 1.0 (referent), 1.28 (0.92–1.79), 1.73 (1.25–2.38), and 1.79 (1.28–2.50; P &lt; 0.0001) and adjusted HRs for increasing quartiles of LDLC were 1.0 (referent), 1.12 (0.78–1.62), 1.25 (0.87–1.79), and 2.38 (1.72–3.30; P &lt; 0.0001). Effect estimates were not statistically different in these analyses for comparisons between IL-6, hsCRP, or LDLC, although IL-6 was the strongest predictor of all-cause mortality. The highest absolute risks were observed among those with elevated levels of both cholesterol and inflammation [HR 6.4 (95% CI 2.9–14.1) for those in the top quartiles of baseline IL-6 and LDLC, HR 4.9 (95% CI 2.6–9.4) for those in the top quartiles of baseline hsCRP and LDLC, both P &lt; 0.0001].

Conclusion
Despite aggressive contemporary secondary prevention efforts, the relationships between inflammation, cholesterol, and cardiovascular risk are largely unchanged from those described two decades ago. These data are consistent with the hypothesis that future treatments for atherosclerosis may require a combination of inflammation inhibition and additional cholesterol reduction.

Clinical trial
ClinicalTrials.gov NCT01594333.
Effects of dapagliflozin in DAPA-HF according to background heart failure therapy
Authors: Docherty Kieran F , Jhund Pardeep S , Inzucchi Silvio E , Køber Lars , Kosiborod Mikhail N , Martinez Felipe A , Ponikowski Piotr , DeMets David L , Sabatine Marc S , Bengtsson Olof , Sjöstrand Mikaela , Langkilde Anna Maria , Desai Akshay S , Diez Mirta , Howlett Jonathan G , Katova Tzvetana , Ljungman Charlotta E A , O’Meara Eileen , Petrie Mark C , Schou Morten , Verma Subodh , Vinh Pham Nguyen , Solomon Scott D , McMurray John J V 
Published: March 2020

Abstract

Aims
In the DAPA-HF trial, the SGLT2 inhibitor dapagliflozin reduced the risk of worsening heart failure (HF) and death in patients with HF and reduced ejection fraction. We examined whether this benefit was consistent in relation to background HF therapy.

Methods and results
In this post hoc analysis, we examined the effect of study treatment in the following yes/no subgroups: diuretic, digoxin, mineralocorticoid receptor antagonist (MRA), sacubitril/valsartan, ivabradine, implanted cardioverter-defibrillating (ICD) device, and cardiac resynchronization therapy. We also examined the effect of study drug according to angiotensin-converting enzyme inhibitor/angiotensin receptor blocker dose, beta-blocker (BB) dose, and MRA (≥50% and &lt;50% of target dose). We analysed the primary composite endpoint of cardiovascular death or a worsening HF event. Most randomized patients (n = 4744) were treated with a diuretic (84%), renin–angiotensin system (RAS) blocker (94%), and BB (96%); 52% of those taking a BB and 38% taking a RAS blocker were treated with ≥50% of the recommended dose. Overall, the dapagliflozin vs. placebo hazard ratio (HR) was 0.74 [95% confidence interval (CI) 0.65–0.85] for the primary composite endpoint (P &lt; 0.0001). The effect of dapagliflozin was consistent across all subgroups examined: the HR ranged from 0.57 to 0.86 for primary endpoint, with no significant randomized treatment-by-subgroup interaction. For example, the HR in patients taking a RAS blocker, BB, and MRA at baseline was 0.72 (95% CI 0.61–0.86) compared with 0.77 (95% CI 0.63–0.94) in those not on all three of these treatments (P-interaction 0.64).

Conclusion
The benefit of dapagliflozin was consistent regardless of background therapy for HF.
GADMA: Genetic algorithm for inferring demographic history of multiple populations from allele frequency spectrum data
Authors: Noskova Ekaterina , Ulyantsev Vladimir , Koepfli Klaus-Peter , O'Brien Stephen J , Dobrynin Pavel 
Published: February 2020

Abstract

Background
The demographic history of any population is imprinted in the genomes of the individuals that make up the population. One of the most popular and convenient representations of genetic information is the allele frequency spectrum (AFS), the distribution of allele frequencies in populations. The joint AFS is commonly used to reconstruct the demographic history of multiple populations, and several methods based on diffusion approximation (e.g., ∂a∂i) and ordinary differential equations (e.g., moments) have been developed and applied for demographic inference. These methods provide an opportunity to simulate AFS under a variety of researcher-specified demographic models and to estimate the best model and associated parameters using likelihood-based local optimizations. However, there are no known algorithms to perform global searches of demographic models with a given AFS.

Results
Here, we introduce a new method that implements a global search using a genetic algorithm for the automatic and unsupervised inference of demographic history from joint AFS data. Our method is implemented in the software GADMA (Genetic Algorithm for Demographic Model Analysis, https://github.com/ctlab/GADMA).

Conclusions
We demonstrate the performance of GADMA by applying it to sequence data from humans and non-model organisms and show that it is able to automatically infer a demographic model close to or even better than the one that was previously obtained manually. Moreover, GADMA is able to infer multiple demographic models at different local optima close to the global one, providing a larger set of possible scenarios to further explore demographic history.