bluuebunny/crossref_metadata_2025_split huggingface dataset:
Preparation and characterization of nano silver immobilized hydrochar derived from hydrothermal carbonization of tobacco stem
Authors: Liang Miao , Liu Xiangzhen , Wang Le , He Yuan , Huang Feng , Li Bin , Zhang Ke , Tian Haiying 
Published: January 2020

Abstract
In this present study, silver nanoparticles (AgNPs) immobilized hydrochar was prepared through a facile one-pot co-hydrothermal carbonization of tobacco stem and silver nitrate. The effect of concentration of silver precursor, hydrothermal temperature and reaction time on the chemical compositions, structural property, combustion performance, as well as gaseous products release behavior of the resultant AgNPs immobilized hydrochar were evaluated. The co-hydrothermal treatment decreased the volatile matter while increased the ash content of hydrochar. Single-phase AgNPs were successfully generated and evenly immobilized onto the hydrochar during the hydrothermal process. The immobilized AgNPs played a notable catalytic role during the char combustion stage, thereby decreased the ignition temperature, burnout temperature and maximum rate temperature for char combustion. Meanwhile, TG-FTIR analysis suggested that the emission amount of harmful gas CO during hydrochar combustion was reduced due to the catalytic effect of AgNPs. This phenomenon may indicate the appropriate amount of nanoparticles immobilization could enhance the combustion behavior of hydrochar fuel.
Experimental investigation on self-activated healing performance of thermosetting polyurethane prepared by tungsten (VI) chloride catalyst
Authors: Fereidoon Abdoulhossein , Ghasemi-Ghalebahman Ahmad , Amini-Nejad Reza , Golshan-Ebrahimi Nadereh 
Published: January 2020

Abstract
Polymers and polymeric composites are widely used for various applications due to their outstanding and wide range of properties. Polyurethanes, existing in different types, are novel and versatile polymers with excellent mechanical properties. Thermosetting polyurethane resins are among the most widely used polyurethanes wherein their manufacturing and developing have been introduced during the last few years. Self-healing materials have been inspired by biological systems in which damages provoke healing responses. It is almost cost-effective to use self-healing materials in commercial applications. This study investigates a novel self-activated approach in thermosetting polyurethane resins. A tungsten (VI) chloride (

WCl

6

) catalyst, a co-activator (phenylacetylene) and a dissolution agent (nonylphenol) were used for the onset of ring-opening metathesis polymerization of dicyclopentadiene. Here different percentages of a catalyst in polyurethane resins were used, the impacts of which on fracture toughness and healing efficiency were also studied. To examine healing efficiency, samples with tapered double-cantilever beam geometry were prepared and using the self-activated method, the development of thermosetting polyurethane self-healing was investigated. The results showed that the concentration of catalyst affects the basic properties of the material and healing efficiency of the composite. The highest healing efficiency of 97% was obtained for a 3 wt% catalyst.
Classifying superconductivity in ThH-ThD superhydrides/superdeuterides
Authors: Talantsev E F , Mataira R C 
Published: January 2020

Abstract
Satterthwaite and Toepke (1970 Phys. Rev. Lett.
25 741) discovered that Th4H15-Th4D15 superhydrides are superconducting but exhibit no isotope effect. As the isotope effect is a fundamental prediction of electron-phonon mediated superconductivity described by Bardeen, Cooper, and Schrieffer (BCS) its absence alludes to some other mechanism. Soon after this work, Stritzker and Buckel (1972 Zeitschrift für Physik A Hadrons and nuclei 257 1-8) reported that superconductors in the PdHx-PdDx system exhibit the reverse isotope effect. Yussouff et al (1995 Solid State Communications
94 549) extended this finding in PdHx-PdDx-PdTx systems. Renewed interest in hydrogen- and deuterium-rich superconductors is driven by the discovery of near-room-temperature superconductivity in highly-compressed H3S (Drozdov et al 2015 Nature
525 73) and LaH10 (Somayazulu et al 2019 Phys. Rev. Lett.
122 027001). Here we attempt to reaffirm or disprove our primary idea that the mechanism for near-room-temperature superconductivity in hydrogen-rich superconductors is not BCS electron-phonon mediated. To that end, we analyse the upper critical field data, B
c2(T), in Th4H15-Th4D15 (Satterthwaite and Toepke 1970 Phys. Rev. Lett.
25 741) as well as two recently discovered high-pressure hydrogen-rich phases of ThH9 and ThH10 (Semenok et al 2019 Materials Today, DOI: 10.1016/j.mattod.2019.10.005). We conclude that all known thorium super-hydrides/deuterides, to date, are unconventional superconductors—along with the heavy fermions, fullerenes, pnictides, cuprates—where we find they have T
c/T
F ratios within a range of 0.008 < T
c/T
F < 0.120, where T
c is the superconducting transition temperature and T
F is the Fermi temperature.
Optical and dielectric properties of electrochemically deposited p-Cu2O films
Authors: Ait Hssi A , Atourki L , Labchir N , Ouafi M , Abouabassi K , Elfanaoui A , Ihlal A , Bouabid K 
Published: January 2020

AbstractA perfect crystalline phases of cuprous oxide were synthesized using electrochemical method at different duration ( 15, 30 and 60 min). The deposited samples were examined by XRD, SEM, UV–Vis absorption and Mott-Schottky measurements. The effect of the deposition time on the optical and dielectric properties of Cu2O was studied in detail. The x-ray diffraction indicated increasing of crystallinity and crystallite size with increasing of deposition time. SEM micrographs exhibited grains with three-faced pyramid shape and grains size increased with improvement of crystallinity. Optical study is performed to calculate optical band gap (Eg), absorption coefficient (α), extinction coefficient (k), refractive index (n), dielectric constants (ε), urbach energy (EU) and optical conductivity (σopt) using the transmittance and absorption spectra in the wavelength range of 400–1100 nm. Among all grown samples, the film deposited at 60 min shows interesting optical and dielectric properties. The Mott-Schottky analysis shows that the film deposited at 60 min has a low carrier density compared to samples deposited in other deposition times.
ZnO thin films grown at different plasma energies by the laser ablation of metallic Zn with a 532 nm wavelength
Authors: de León J A Guerrero , Pérez-Centeno A , Gómez-Rosas G , Camps E , Arias-Cerón J S , Santana-Aranda M A , Quiñones-Galvan J G 
Published: January 2020

Abstract
In this work, structural, optical and electrical properties of ZnO thin films grown by laser ablation of a Zn metallic target on oxygen atmosphere using the 532 nm emission of the second harmonic of a Nd:YAG laser, are studied. Different mean kinetic energies of the plasma (Ek) at fixed ion density (Np) were used as control parameters. X-ray diffraction profiles show the presence of a width (002) peak together with a peak associated with the (101) reflection. Changes in Ek affect the crystallinity of the samples. An intense PL emission in the visible range of the spectra associated with a majority intrinsic donor defects can be observed. The films showed an unusual low electrical resistivity as compared to the commonly reported values for undoped ZnO thin films.
Structural electronic and dynamic properties of Li3Bi and Li2NaBi
Authors: Erden Gulebaglan Sinem , Kilit Dogan Emel 
Published: January 2020

Abstract
We report a study of structural, electronic and dynamic properties of Li3Bi and Li2NaBi via density functional theory. It is found that Li3Bi and Li2NaBi show semiconducting property with an indirect electronic band gap. The calculated structural and electronic parameters (lattice parameters, bulk modulus, bulk modulus derivation) are in a good agreement with the available experimental data. Full phonon spectra of Li3Bi and Li2NaBi materials in the Rock Salt structure were collected using the linear response method. At 0 GPa pressure, Li3Bi is dynamically stable while Li2NaBi, which can be synthesized from Li3Bi by replacing one Bi atom with the Na atom, is unstable. In this study we searched to find the pressure value that makes Li2NaBi dynamically stable. Calculations showed that the Li2NaBi structure becomes stable when 8.62 GPa pressure is applied to the Li2NaBi structure. This study is thought to give direction to the future studies.
Optical anisotropy of one-dimensional perovskite C4N2H14PbI4 crystals
Authors: Cheng Xue , Ma Jiaqi , Zhou Yunxi , Fang Chen , Wang Jun , Li Junze , Wen Xinglin , Li Dehui 
Published: January 2020

Abstract
Optical anisotropy is essential for the polarization-sensitive optoelectronic devices. Recently, in-plane anisotropy is demonstrated in various 2D layered materials. It has been proved that organic-inorganic perovskites possess excellent optical properties; however, the anisotropy of organic-inorganic perovskites is rarely reported because of the in-plane isotropic structure. Here, we report a large optical anisotropy of one-dimensional organic lead iodine perovskites C4N2H14PbI4 crystals, including emission, excitation and reflection anisotropy. An emission linear dichroic ratio of 5.5 and an excitation linear dichroic ration of 7 are achieved respectively, which are much larger than the in-plane anisotropy of 2D layered materials. The large optical anisotropy can be ascribed to the anisotropic dipole moment in the unique 1D chain structure. In addition, the PL of the 1D C4N2H14PbI4 crystal is dominated by the broadband self-trapped exciton emission due to the quantum confinement effect and strong electron-phonon interaction. Our results advocate that 1D perovskites are promising in the application of broadband polarization-sensitive optoelectronic devices.
contamDE-lm: linear model-based differential gene expression analysis using next-generation RNA-seq data from contaminated tumor samples
Authors: Ji Yifan , Yu Chang , Zhang Hong 
Published: January 2020

Abstract

Motivation
Tumor and adjacent normal RNA samples are commonly used to screen differentially expressed genes between normal and tumor samples or among tumor subtypes. Such paired-sample design could avoid numerous confounders in differential expression (DE) analysis, but the cellular contamination of tumor samples can be an important noise and confounding factor, which can both inflate false-positive rate and deflate true-positive rate. The existing DE tools that use next-generation RNA-seq data either do not account for cellular contamination or are computationally extensive with increasingly large sample size.

Results
A novel linear model was proposed to avoid the problem that could arise from tumor–normal correlation for paired samples. A statistically robust and computationally very fast DE analysis procedure, contamDE-lm, was developed based on the novel model to account for cellular contamination, boosting DE analysis power through the reduction in individual residual variances using gene-wise information. The desired advantages of contamDE-lm over some state-of-the-art methods (limma and DESeq2) were evaluated through the applications to simulated data, TCGA database and Gene Expression Omnibus (GEO) database.

Availability and implementation
The proposed method contamDE-lm was implemented in an updated R package contamDE (version 2.0), which is freely available at https://github.com/zhanghfd/contamDE.

Supplementary information
Supplementary data are available at Bioinformatics online.
Safety of Antimicrobials During Pregnancy: A Systematic Review of Antimicrobials Considered for Treatment and Postexposure Prophylaxis of Plague
Authors: Yu Patricia A , Tran Emmy L , Parker Corinne M , Kim Hye-Joo , Yee Eileen L , Smith Paul W , Russell Zachary , Nelson Christina A , Broussard Cheryl S , Yu Yon C , Meaney-Delman Dana 
Published: January 2020

AbstractBackgroundThe safety profile of antimicrobials used during pregnancy is one important consideration in the decision on how to treat and provide postexposure prophylaxis (PEP) for plague during pregnancy.MethodsWe searched 5 scientific literature databases for primary sources on the safety of 9 antimicrobials considered for plague during pregnancy (amikacin, gentamicin, plazomicin, streptomycin, tobramycin, chloramphenicol, doxycycline, sulfadiazine, and trimethoprim-sulfamethoxazole [TMP-SMX]) and abstracted data on maternal, pregnancy, and fetal/neonatal outcomes.ResultsOf 13 052 articles identified, 66 studies (case-control, case series, cohort, and randomized studies) and 96 case reports were included, totaling 27 751 prenatal exposures to amikacin (n = 9), gentamicin (n = 345), plazomicin (n = 0), streptomycin (n = 285), tobramycin (n = 43), chloramphenicol (n = 246), doxycycline (n = 2351), sulfadiazine (n = 870), and TMP-SMX (n = 23 602). Hearing or vestibular deficits were reported in 18/121 (15%) children and 17/109 (16%) pregnant women following prenatal streptomycin exposure. First trimester chloramphenicol exposure was associated with an elevated risk of an undescended testis (odds ratio [OR] 5.9, 95% confidence interval [CI] 1.2–28.7). Doxycycline was associated with cardiovascular malformations (OR 2.4, 95% CI 1.2–4.7) in 1 study and spontaneous abortion (OR 2.8, 95% CI 1.9–4.1) in a separate study. First trimester exposure to TMP-SMX was associated with increased risk of neural tube defects (pooled OR 2.5, 95% CI 1.4–4.3), spontaneous abortion (OR 3.5, 95% CI 2.3–5.6), preterm birth (OR 1.5, 95% CI 1.1–2.1), and small for gestational age (OR 1.6, 95% CI 1.2–2.2). No other statistically significant associations were reported.ConclusionsFor most antimicrobials reviewed, adverse maternal/fetal/neonatal outcomes were not observed consistently. Prenatal exposure to streptomycin and TMP-SMX was associated with select birth defects in some studies. Based on limited data, chloramphenicol and doxycycline may be associated with adverse pregnancy or neonatal outcomes; however, more data are needed to confirm these associations. Antimicrobials should be used for treatment and PEP of plague during pregnancy; the choice of antimicrobials may be influenced by these data as well as information about the risks of plague during pregnancy.
PncStress: a manually curated database of experimentally validated stress-responsive non-coding RNAs in plants
Authors: Wu Wenyi , Wu Yan , Hu Dahui , Zhou Yincong , Hu Yanshi , Chen Yujie , Chen Ming 
Published: January 2020

Abstract
Non-coding RNAs (ncRNAs) are recognized as key regulatory molecules in many biological processes. Accumulating evidence indicates that ncRNA-related mechanisms play important roles in plant stress responses. Although abundant plant stress-responsive ncRNAs have been identified, these experimentally validated results have not been gathered into a single public domain archive. Therefore, we established PncStress by curating experimentally validated stress-responsive ncRNAs in plants, including microRNAs, long non-coding RNAs and circular RNAs. The current version of PncStress contains 4227 entries from 114 plants covering 48 biotic and 91 abiotic stresses. For each entry, PncStress has biological information and network visualization. Serving as a manually curated database, PncStress will become a valuable resource in support of plant stress response research.
GREG—studying transcriptional regulation using integrative graph databases
Authors: Mei Songqing , Huang Xiaowei , Xie Chengshu , Mora Antonio 
Published: January 2020

AbstractA gene regulatory process is the result of the concerted action of transcription factors, co-factors, regulatory non-coding RNAs (ncRNAs) and chromatin interactions. Therefore, the combination of protein–DNA, protein–protein, ncRNA–DNA, ncRNA–protein and DNA–DNA data in a single graph database offers new possibilities regarding generation of biological hypotheses. GREG (The Gene Regulation Graph Database) is an integrative database and web resource that allows the user to visualize and explore the network of all above-mentioned interactions for a query transcription factor, long non-coding RNA, genomic range or DNA annotation, as well as extracting node and interaction information, identifying connected nodes and performing advanced graphical queries directly on the regulatory network, in a simple and efficient way. In this article, we introduce GREG together with some application examples (including exploratory research of Nanog’s regulatory landscape and the etiology of chronic obstructive pulmonary disease), which we use as a demonstration of the advantages of using graph databases in biomedical research.Database URL: https://mora-lab.github.io/projects/greg.html, www.moralab.science/GREG/
Mortality burden in patients born with Ebstein’s anomaly: a 40-year nationwide cohort study
Authors: Eckerström Filip , Eriksson Peter , Dellborg Mikael , Lappas Georgios , Rosengren Annika , Hjortdal Vibeke Elisabeth , Mandalenakis Zacharias 
Published: January 2020

Abstract

Aims
Survival rates for unoperated patients with Ebstein’s anomaly (EA) are unknown. We estimated overall long-term mortality in operated and unoperated EA patients, compared with the general population in Sweden.

Methods and results
Using national medical registries, Swedish individuals born 1970–93 and diagnosed with EA between 1970 and 2011 were included. The hazard ratio for overall mortality for EA patients (n = 216) vs. the matched comparison cohort (n = 2160) was 43.7 [95% confidence interval (CI): 24.8–82.5]. Mortality risk for EA patients (vs. controls) decreased as birth period progressed, with hazard ratios declining from 63.6 (95% CI: 26.3–191.8) for those born in the 1970s to 34.4 (95% CI: 15.8–83.1) for those born in the 1980s and 20.2 (95% CI: 1.6–632.5) for those born at the beginning of 1990s. The overall mortality hazard ratios for unoperated and operated patients with EA (vs. controls) were 30.2 (95% CI: 13.8–73.3) and 63.7 (95% CI: 28.1–172.5), respectively. The risk of mortality among unoperated EA patients (vs. controls) declined with progressing birth period, with hazard ratios declining from 58.4 (95% CI: 15.1–415.2) in the 1970s to 22.9 (95% CI: 8.0–75.3) in the 1980s and 10.2 (95% CI: 0.3–395.9) in the 1990s.

Conclusion
Overall all-cause mortality for patients with EA declined dramatically from 64 times to 20 times that of controls without EA, from the 1970s to the early 1990s. Unoperated patients with EA had better survival than did operated patients, possibly reflecting the higher severity of disease or more severe associated cardiac defects in patients undergoing surgery.
RETRACTED: From farm to fork: global surveillance trends of animal-food-human antimicrobial resistance
Authors: Ashaolu Tolulope J 
Published: January 2020

Abstract

Objectives
Global surveillance measures keep trending with antimicrobial resistance (AMR) from farm to the final consumer. It is intended to review these trends within the past few decades.

Materials and Methods
This short communication showcases AMR surveillance basics, methods, processes, technicalities and milestones within recent decades in relationship to AMR emergence from farm to fork.

Results and Conclusions
Antibiotics and antimicrobial agents contribute to AMR dynamics. Passive and active AMR surveillance strategies continuously render data-driven robust systems for monitoring resistance levels and thereof changes across all geographical regions.
Regularity Estimates for Nondivergence Parabolic Equations on Generalized Orlicz Spaces
Authors: Anh Bui The 
Published: January 2020

Abstract
In this paper, by using a new approach, we prove regularity estimates for the solution to the nondivergence parabolic equation on generalized Orlicz spaces. Our approach can be viewed as a combination of representation theorems in partial differential equations and harmonic analysis techniques.
Rotating Nightshift Work and Hematopoietic Cancer Risk in US Female Nurses
Authors: Zhang Yin , Birmann Brenda M , Papantoniou Kyriaki , Zhou Eric S , Erber Astrid C , Schernhammer Eva S 
Published: January 2020

Abstract

Background
Nightshift work is a plausible risk factor for hematologic cancer, but epidemiological evidence remains sparse, especially for individual subtypes. We prospectively examined the association of rotating nightshift work with hematopoietic cancer risk.

Methods
This cohort study included US women from the Nurses’ Health Study (NHS: n = 76 846, 1988–2012) and Nurses’ Health Study II (NHSII: n = 113 087, 1989–2013). Rotating nightshift work duration was assessed at baseline (both cohorts) and cumulatively updated (NHSII). Cox regression was used to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) for overall hematopoietic cancer and specific histologic subtypes. All statistical tests were two-sided.

Results
We documented 1405 (NHS) and 505 (NHSII) incident hematopoietic cancer cases during follow-up. In NHS, compared with women who never worked rotating nightshifts, longer rotating nightshift work duration was associated with an increased risk of overall hematopoietic cancer (HR1–14y = 0.93, 95% CI = 0.83 to 1.04; HR≥15y = 1.28, 95% CI = 1.06 to 1.55; Ptrend = .009). In NHSII, results were similar though not statistically significant (HR1–14y = 0.99, 95% CI = 0.82 to 1.21; HR≥15y = 1.41, 95% CI = 0.88 to 2.26; Ptrend = .47). In the subtype analyses in the NHS, the association of history of rotating nightshift work with risk of diffuse large B-cell lymphoma varied by duration (HR1–14y = 0.71, 95% CI = 0.51 to 0.98; HR≥15y = 1.69, 95% CI = 1.07 to 2.67; Ptrend = .01) compared with those who never worked rotating nightshifts. Women reporting a longer history of rotating nightshifts also had suggestive (statistically nonsignificant) increased risks of overall non-Hodgkin lymphoma (HR≥15y = 1.19, 95% CI = 0.95 to 1.49), Hodgkin lymphoma (HR≥15y = 1.32, 95% CI = 0.43 to 4.06), and multiple myeloma (HR≥15y = 1.42, 95% CI = 0.85 to 2.39).

Conclusions
Longer duration (≥15 years) of rotating nightshift work was associated with increased risks of overall and several subtypes of hematopoietic cancer.