bluuebunny/crossref_metadata_2025_split huggingface dataset:
Gradient estimates for a weighted nonlinear parabolic equation and applications
Authors: Abolarinwa Abimbola , Oladejo Nathaniel K. , Salawu Sulyman O. 
Published: November 2020

Abstract
This paper derives elliptic gradient estimates for positive solutions to a nonlinear parabolic equation defined on a complete weighted Riemannian manifold. Applications of these estimates yield Liouville-type theorem, parabolic Harnack inequalities and bounds on weighted heat kernel on the lower boundedness assumption for Bakry-Émery curvature tensor.
fac-Bis(phenoxatellurine) tricarbonyl manganese(I) bromide
Authors: Mostaghimi Farzin , Lork Enno , Beckmann Jens 
Published: November 2020

Abstract
The reaction of (CO)5MnBr with phenoxatellurine (PT) provided the octahedral complex fac-(CO)3(PT)2MnBr in which the two PT ligands are situated in cis-position.
Polarization-sensitive photodetectors based on three-dimensional molybdenum disulfide (MoS2) field-effect transistors
Authors: Deng Tao , Li Shasha , Li Yuning , Zhang Yang , Sun Jingye , Yin Weijie , Wu Weidong , Zhu Mingqiang , Wang Yingxin , Liu Zewen 
Published: November 2020

Abstract
The molybdenum disulfide (MoS2)-based photodetectors are facing two challenges: the insensitivity to polarized light and the low photoresponsivity. Herein, three-dimensional (3D) field-effect transistors (FETs) based on monolayer MoS2 were fabricated by applying a self–rolled-up technique. The unique microtubular structure makes 3D MoS2 FETs become polarization sensitive. Moreover, the microtubular structure not only offers a natural resonant microcavity to enhance the optical field inside but also increases the light-MoS2 interaction area, resulting in a higher photoresponsivity. Photoresponsivities as high as 23.8 and 2.9 A/W at 395 and 660 nm, respectively, and a comparable polarization ratio of 1.64 were obtained. The fabrication technique of the 3D MoS2 FET could be transferred to other two-dimensional materials, which is very promising for high-performance polarization-sensitive optical and optoelectronic applications.
Hydrophobic multiscale cavities for high-performance and self-cleaning surface-enhanced Raman spectroscopy (SERS) sensing
Authors: Zhao Xiaofei , Liu Chundong , Yu Jing , Li Zhen , Liu Lu , Li Chonghui , Xu Shicai , Li Weifeng , Man Baoyuan , Zhang Chao 
Published: November 2020

Abstract
Cavity array, with excellent optical capture capability, has received increasing attention for the surface-enhanced Raman spectroscopy (SERS)-active substrates. Here, we proposed molybdenum disulfide (MoS2) nanocavities growing on pyramid Si (PSi) composed of in situ reduced Au nanoparticles (AuNPs), which can form the multiscale cavities (MSCs), and is facile for the couple of the plasmon. We demonstrated that the PSi/MoS2/Au MSCs can serve as highly sensitive, uniform, and stable SERS substrates for rhodamine 6G (R6G), crystal violet, and adenosine triphosphate detection, benefiting from the synergistic effect of the enhanced light trapping and the effective plasmonic couple. The couple of the plasmon in the MSCs is evidently proved by finite-difference time domain simulation, showing the strong electromagnetic field is located around the cavity wall. Moreover, the excellent hydrophobicity of the PSi/MoS2/AuNPs substrate endows it with the ability for the directional monitoring of organic pollutant in a mixture of oil and water. Finally, we demonstrated the MSCs with outstanding photocatalytic performance could achieve the renewable utilization by self-cleaning, which was attributed to the fast electron transfer and effective light absorption. The proposed PSi/MoS2/AuNPs MSC represents a robust mean using the plasmonic metal/semiconductor heterostructure for high-performance SERS sensors and photodegradation.
Synthesis and crystal structure of 3-octyl-5,5-diphenylimidazolidine-2,4-dione, C23H28N2O2
Authors: Guerrab Walid , Mague Joel T. , Ramli Youssef 
Published: November 2020

Abstract
C23H28N2O2, orthorhombic, Pbca (no. 61), a = 10.713(2) Å, b = 15.689(3) Å, c = 24.485(5) Å, V = 4115.2(14) Å3, Z = 8, R
gt(F) = 0.0581, wR
ref(F
2) = 0.1734, T = 120(2) K.
Crystal structure of 4-[(2-methoxyphenyl)carbamoyl]butanoic acid, C12H15NO4
Authors: Hanifa Bibi , Sirajuddin Muhammad , Khan Hizbullah , Lo Kong Mun , Tiekink Edward R.T. 
Published: November 2020

Abstract
C12H15NO4, triclinic, P1̄ (no. 2), a = 7.4325(3) Å, b = 7.5171(3) Å, c = 23.7377(9) Å, α = 87.780(3)°, β = 89.105(3)°, γ = 61.299(4)°, V = 1162.42(9) Å3, Z = 4, R
gt(F) = 0.0566, wR
ref(F
2) = 0.1652, T = 100(2) K.
The crystal structure of (8R,10R,12R,14R)- 12-hydroxy-16-(5-(2-hydroxypropan-2-yl)-2-methyltetrahydrofuran-2-yl)- 4,4,8,10,14-pentamethyltetradecahydro-3H- cyclopenta[a]phenanthrene-3,6(2H)-dione, C30H48O5
Authors: Wang Xiao-Hui , Wang Hui-yun , Zhang Sheng-Nan , Song Jia , Liang Lun-Hai , Zhao Feng-Lan , Meng Qing-Guo 
Published: November 2020

Abstract
C30H48O5, orthorhombic, P212121 (no. 19), a = 11.6608(10) Å, b = 14.8098(15) Å, c = 15.9975(16) Å, V = 2762.7(5) Å3, Z = 4, Rgt
(F) = 0.0586, wRref
(F
2) = 0.1580, T = 293(2) K.
Enhancing carbonation and chloride resistance of autoclaved concrete by incorporating nano-CaCO3
Authors: Li Guo , Zhuang Zheng , Lv Yajun , Wang Kejin , Hui David 
Published: November 2020

Abstract
Three nano-CaCO3 (NC) replacement levels of 1, 2, and 3% (by weight of cement) were utilized in autoclaved concrete. The accelerated carbonation depth and Coulomb electric fluxes of the hardened concrete were tested periodically at the ages of 28, 90, 180, and 300 days. In addition, X-ray diffraction, thermogravimetry, and mercury intrusion porosimetry were also performed to study changes in the hydration products of cement and microscopic pore structure of concrete under autoclave curing. Results indicated that a suitable level of NC replacement exerts filling and accelerating effects, promotes the generation of cement hydration products, reduces porosity, and refines the micropores of autoclaved concrete. These effects substantially enhanced the carbonation and chloride resistance of the autoclaved concrete and endowed the material with resistances approaching or exceeding that of standard cured concrete. Among the three NC replacement ratios, the 3% NC replacement was the optimal dosage for improving the long-term carbonation and chloride resistance of concrete.
Palm oil plantation and cultivation: Prosperity and productivity of smallholders
Authors: Herdiansyah Herdis , Negoro Habibullah Adi , Rusdayanti Nurul , Shara Siti 
Published: November 2020

AbstractIndonesia developed the Smallholder Plantation Scheme (PIR) in the early 1980s, making smallholders an important part of the national scale. Increasing smallholder yields is an important instrument for increasing local income and livelihoods. However, small-scale oil palm expansion has problems with low productivity and quality of production. Therefore, to increase their productivity and improve their cultivation, this study measures the importance of planting behavior and specific treatment of farmers’ prosperity and productivity. To measure the possible significant differences between and within groups, a statistical approach, ANOVA, has been used while Spearman’s correlation matrix also has been used to measure the correlation between variables. This study finds that good seed treatment and adequate doses of fertilizer are important for farmers’ prosperity and productivity. Smallholder farmers have the least expenditure but the highest average production and income with the most extended growing age when compared with the other two groups of smallholder farmers. Even though the number of seeds used was the smallest, the success rate of smallholder planting was the highest. The optimal use of fertilizer and seed care alone is not significant enough to increase yields. It is a combination of other factors such as planting management practices, drainage capacity and soil substrate properties, climate characteristics, rainfall distribution, nutrient supply, and prevention of plant diseases and also determining maximum yield.
Application of energy dissipation and damping structure in the reinforcement of shear wall in concrete engineering
Authors: Yang Shujuan 
Published: November 2020

AbstractIn view of the problem of large earthquake displacement in the use of the original concrete engineering shear wall reinforcement method, the energy dissipation and damping structure is used to design the energy dissipation and damping structure reinforcement method in the concrete engineering shear wall. According to the design process of the set method, the anti-vibration coefficient of the concrete shear wall is tested. The energy dissipation structure is used to construct a shear damping wall, and the damper is added to the original shear wall. The concrete shear wall is strengthened by sticking steel technology. So far, the design of shear wall reinforcement method based on the energy dissipation structure has been completed. Compared with the original method, the displacement distance of this method is lower than that of the original method. In conclusion, the effect of shear wall reinforcement method based on the energy dissipation structure is better than that of the original method.
Effect of chemical treatment on thermophysical behavior of Spanish broom flour-reinforced polypropylene biocomposite
Authors: Nouar Yacine , Zouaoui Fairouz , Nekkaa Sorya , Rouabah Farid , Fernández-García Marta , López Daniel , Fois Magali 
Published: November 2020

Abstract
This work presents the chemical modification of Spanish broom flour (SBF), and the study of SBF loading and surface treatment on the performances of polypropylene (PP) biocomposites. In order to enhance the interfacial interactions between the PP matrix and the SBF, two types of chemical treatments were used: 2 wt% of sodium hydroxide (NaOH) for different times (8, 24 and 48 h) and 5 wt% of vinyltrimethoxysilane (VTMS), respectively. Different techniques for characterization such as the melting flow index (MFI), X-ray diffraction, transient plane source (TPS) and water absorption were used. The experiment results showed a decrease of the MFI with increasing of modified SBF content, independently of the type of the chemical treatment. Moreover, this decrease became significant in the biocomposites containing SBF-VTMS. The X-ray patterns showed that surface treatment of SBF could improve their crystallinity and crystallite sizes. The TPS measurements illustrates that the thermal conductivity of the biocomposites decreases with 10 wt% of modified SBF loading. Higher content than 20 wt% of SBF, improved the thermal conductivity of the biocomposites. Meanwhile, the lowest values were found when the VTMS is used. Besides, it was accompanied by a decrease in absorptivity due to the better interfacial adhesion SBF-PP.
Growth factors in the regulation of reparative response in the presence of peritoneal damage
Authors: Shurygina Irina A. , Shurygin Мichael G. , Rodionova Lubov V. , Ayushinova Nataliya I. 
Published: November 2020

Abstract

Objectives
To study the expression of growth factors in the regulation of tissue repair after peritoneal damage tissue response to peritoneal damage.

Methods
Experimental study in 35 male Wistar rats determining the evolution over time of the tissue response to aseptic peritoneal damage. A standardized bowel and peritoneal lesions were created in the right lower quadrant by laparotomy. Then, tissular expression of growth factors was evaluated by multiplex polymerase chain reaction at seven timepoints between 6 h and 30 days, postoperatively.

Results
Tissular responses of granulocyte-stimulating factors (Csf2, Csf3), connective tissue growth factor (Ctgf), epidermal growth factors and receptor (Egf, Egfr), fibroblast growth factors (Fgf2, 7 and 10), heparin binding EGF-like growth factor (Hbegf), hepatocyte growth factor (Hgf), insulin-like growth factor-1 (Igf1), mitogenic transforming growth factors (Tgfa, Tgfb1, Tgfbr3), and vascular endothelial growth factor A (Vegfa) were biphasic with a first expression peak at day 3, followed by a more pronounced peak at day 14.

Conclusions
We observed a long-lasting, widespread response of tissular growth factors for at least two weeks after peritoneal damage. To be clinically effective, the prophylaxis of postoperative adhesions might be needed for an extended period of time.
Mechanistic insight into the interactions between thiazolidinedione derivatives and PTP-1B combining 3D QSAR and molecular docking in the treatment of type 2 diabetes
Authors: Igunnu Adedoyin , Ambrose George Oche , Adigun Temidayo Olamide 
Published: November 2020

Abstract
Protein tyrosine phosphatases (PTP) regulate various cellular processes and represent important targets for therapeutic intervention in various diseases. Studies have shown that partial or total cessation of the PTP-1B gene in normal and diabetic mice has led to resistance to weight gain and improved insulin response. Also, a further study showed that inhibition of PTP-1B or a reduction in its cellular abundance in mice resulted in similar effects and, as such, provided a rationale for the treatment strategy for type 2 diabetes. Thiazolidinedione (TZD) derivatives have been identified as new PTP-1B inhibitors but the mechanism of interaction between TZD derivatives and PTP-1B is still elusive. In this study, a three-dimensional quantitative structure-activity relationship (3D-QSAR) analysis was performed, including multiple linear regression (MLR) and cross-validation, on a set of TZD derivatives as antidiabetic agents. MLR analysis was performed on 23 PTP-1B TZD derivatives to determine the relationships between physicochemical properties and antidiabetic properties of TZD derivatives. The training data set creates a QSAR model with a correlation coefficient (R
2) of 0.8516, a Q
2 (Leave-One-Out) cross-validation factor of 0.6473, r
2 (correlation coefficient) for the external dataset is 0.8367 while r
2 of predicted dataset is 0.8934 by the MLR Method. The MLR model was also validated by the standardization approach. We observed a high correlation between predicted and observed activity (experimental values), thus confirming and proving the high quality of QSAR models. Finally, molecular docking analysis was performed to better understand the interactions between the PTP-1B target and TZD derivatives. The model proposed in this project can be used to design new TZD derivatives with specific PTP-1B inhibitory activity.
Structural and spectroscopic properties of 3-halogenobenzaldehydes: DFT and TDDFT simulations
Authors: Parlak Cemal , Atan Berna Sümeyra , Rhyman Lydia , Ramasami Ponnadurai 
Published: November 2020

Abstract
Conformers of 3-halogenobenzaldehydes (3HB, halogen atom: F [3FB], Cl [3CB] and Br [3BB]) in the gas phase and solutions were studied using density functional theory (DFT) and time dependent density functional theory (TDDFT), B3LYP functional and MP2 method with 6–311+G(3df,p) and aug-cc-pVDZ basis sets. The present study aims to investigate the halogen and medium effects on the conformational stability, structural parameter, dipole moment, carbonyl stretching frequency, frontier molecular orbitals, band gap, absorption band and density of states. Carbonyl stretching frequencies were evaluated with some solvent models. All results will be useful for further analysis of halogen-substituted benzaldehydes.
How can we learn what attention is? Response gating via multiple direct routes kept in check by inhibitory control processes
Authors: Panis Sven 
Published: November 2020

AbstractTo explore the time course of space- and object-based attentional selection processes I analysed the shapes of the response time (RT) and accuracy distributions of left/right arrow identification responses in the two-rectangle paradigm. After cueing one of the four ends of two horizontally or vertically oriented rectangles the arrow typically appears at the cued location (valid), or sometimes at an uncued location in the same (invalid-same) or other rectangle (invalid-different). The data point to a multiple-route model in which (a) an informative cue generates response channel activation before arrow signals emerge, (b) the task-irrelevant arrow location is represented in multiple egocentric and allocentric reference frames around 150 ms after target onset, with the former including a reference frame centered on the currently attended location, (c) the task-irrelevant spatial codes activate premature response tendencies that are actively inhibited to allow gating of arrow direction signals, (d) after an invalid cue the onset of the arrow triggers an “attention shift” – acting between 150 and 240 ms after target onset – that strongly interferes with task performance in certain conditions (invalid-same cueing with horizontal rectangles, and invalid-different cueing with vertical rectangles), and (e) participants differ in which task-irrelevant codes they preferentially inhibit. These results pave the way for future confirmatory studies to temporally characterize and disentangle the contributions of different types of response channel activation processes, from those of reactive cognitive control processes including active and selective response suppression.
Translation, cross-cultural adaptation and psychometric evaluation of the Thai version of the fear-avoidance beliefs questionnaire in patients with non-specific neck pain
Authors: Wiangkham Taweewat , Phungwattanakul Nattawan , Tedsombun Patcharin , Kongmee Isara , Suwanmongkhon Wanisara , Chidnok Weerapong 
Published: November 2020

Abstract

Objectives
Fear-avoidance beliefs questionnaire (FABQ) is a self-report, valid and reliable questionnaire to quantify fear and avoidance beliefs related to physical activity and work. Furthermore, it can be used to predict prolong disability in patients with non-specific neck pain. Although it was originally developed to manage patients with low back pain, it has also been studied in individuals with neck pain. This questionnaire was translated into several languages following reports of potential benefits in patients with neck pain. Recently, Thai neck clinical trials, international multi-centre trials and data sharing are growing throughout the world but no validated Thai version of the FABQ is available for clinical and research uses. Our objectives were to translate and cross-culturally adapt the FABQ into Thai version and evaluate its psychometric properties in Thai patients with non-specific neck pain.

Methods
Cross-cultural translation and adaptation of the FABQ were conducted according to standard guidelines. A total of 129 participants with non-specific neck pain were invited to complete the Thai versions of the FABQ (FABQ-TH), neck disability index and visual analogue scale for pain intensity. Psychometric evaluation included exploratory factor analysis, internal consistency, test-retest reliability, agreement, and convergent validity. Thirty participants completed the FABQ-TH twice with a 48-h interval between tests to assess the test-retest reliability.

Results
Factor analysis identified four components for the FABQ-TH (66.69% of the total variance). The intraclass correlation coefficient of test-retest reliability was excellent for the total score (0.986), work attitudes (0.995), physical activity attitudes (0.958), physical activity experiences (0.927), and expected recovery (0.984). Cronbach’s alpha for internal consistency was excellent (range 0.87–0.88) for all items. The minimal detectable change of the FABQ-TH was 5.85. The FABQ-TH correlated to its subscales (range 0.470–0.936), indicating the strongest association with work attitude. The weakest correlation was observed between the FABQ-TH and disability (r

s
=0.206, p=0.01). Missing data and significant floor or ceiling effects were not found.

Conclusions
The Thai version of the FABQ for non-specific neck pain was successfully adapted. It is a valid and reliable instrument to quantify fear and avoidance beliefs among patients with non-specific neck pain who speak and read Thai.
Estudio de las funciones de la atenuación en hablantes de Málaga con nivel de instrucción alto. Aproximación sociolingüística
Authors: Ávila-Muñoz Antonio , Rodríguez Cruces María 
Published: November 2020

AbstractMitigation is a pragmatic-linguistic category traditionally related to the theory of verbal politeness. Previous work on this issue has shown that conversational hedging is largely conditioned by the speaker’s identity (Albelda 2012, Cestero 2011, Samper 2017), that is why a deeper understanding of attenuating phenomena requires close attention to the social context underpinning communicative interactions. This paper advances some preliminary results from the ongoing research on discursive mitigation in the Malaga-PRESEEA spoken corpus. The analysis is centered on the underlying mitigating functions in the speech performance of a group of speakers with university education. Since one of our main objectives is contrastive, and previous solid research on attenuation has been carried out within the PRESEEA context, its methodological basis has been assumed (Albelda 2012, Cestero 2011, Samper 2017). Results of multifactorial logistic regression analysis from our data are partially similar to those obtained in previous studies: mitigation formulas are frequent among the well-educated speakers we have studied, especially those related to self-protection functions. Women—more than men—, and younger speakers—more than every other age-group—, tend to lead this use.
A simple silica based DNA isolation method for cell-free DNA analysis from liquid biopsy
Authors: Yalcinkaya Burhanettin , Coşkun Kübra , Akgoz Muslum , Pence Sadrettin 
Published: November 2020

Abstract

Objectives
Cell-free DNA (cfDNA) is a promising biomarker for cancer diagnostics. Blood is used as a liquid biopsy material which transports many types of biological components such as protein, circulating tumor cells, cfDNA, and extracellular RNA molecules. In this study, the yield and purity of extracted DNA were compared of seven different in-house DNA isolation methods and two different commercial kits from human blood samples.

Methods
Different in-house methods, guanidine thiocyanate (GuSCN) with silica method, phenol-chloroform-isoamylalcohol method-1, phenol-chloroform-isoamylalcohol method-2, phenol-chloroform-isoamylalcohol with ammonium acetate method, sodium N-lauryl sarcosine with glycogen method, sodium acetate method, sodium chloride with silica method and two different commercial kits “Quick-cfDNA serum & plasma kit” and “plasma/serum cell-free circulating DNA purification mini kit” were used. After DNA isolation, methods were compared with real time PCR technique (qPCR) and spectrophotometric methods.

Results
The results showed that the newly modified GuSCN with silica method gave much higher purity and yield than any other analyzed in-house isolation methods and commercial kits that were used.

Conclusions
The GuSCN with silica method is simple to set up, easy to use, inexpensive and environmentally safe. The method would be an alternative method for cfDNA isolation from liquid biopsy samples.
Kommunist, Häretiker, Rebell
Authors: Eichenberger Linda 
Published: November 2020

Zusammenfassung
Die moderne Religionsgeschichte hat Mazdak, Anführer einer sozioreligiösen Reformbewegung im Sasanidenreich, auf divergierende Weise konzeptualisiert. Insbesondere die diskrepanten Quellenhinweise auf angeblich von Mazdak geforderte Frauen- und Gütergemeinschaften eröffneten Spielraum, eigene, zumeist anachronistische und somit problematische Vorannahmen in Bezug auf das Verhältnis von sogenannten ‚sozialen‘ und ‚religiösen‘ Faktoren der Reformbewegung zu projizieren. Die in Bezug auf Mazdak besonders deutlich hervortretende Problematik nachträglicher Zuschreibungen und narrativer Überlagerungen unterstreicht die grundsätzliche Notwendigkeit, Forschungsgeschichte und Begrifflichkeiten konsequent zu historisieren, und schliesst damit an die übergeordnete Fragestellung an, wie historische Gegenstände (re-)konstruiert werden können.