bluuebunny/crossref_metadata_2025_split huggingface dataset:
The features of bimetallic Pt-Ru nanoparticles formation on the Nafion membrane for electrodes of chemical power sources
Authors: Lebedeva M V , Ragutkin A V , Antropov A P , Yashtulov N A 
Published: February 2020

Abstract
In this work the electrode materials on Nafion modified by bimetal platinum-ruthenium nanoparticles have been formed. The functional characteristics of the electrodes have been studied by atomic force microscopy, scanning electron microscopy and voltammetry methods. The catalytic activity of the synthesized composites in the methanol oxidation reaction at different temperatures had been investigated.
Study of the addition of the hybrid sisal fibers on the dynamic mechanical property of SFs reinforced polylactic acid (PLA) composites
Authors: Zhu Z H , Zhang N , Zhang Y , Hao M Y , Wu H W 
Published: February 2020

Abstract
When sisal fiber (SF) is added into polylactide (PLA) matrix, the storage modulus of PLA/SF composites increases greatly which indicate the rigidity of the composite material increases obviously. Comparing PLA composites with pure PLA, it can be found that the glass transition temperature (Tg) of PLA composites is significantly higher than that of PLA which showed the heat resistance of the PLA composites can be improved obviously because of the addition of SFs in PLA matrix. The energy storage modulus of PLA/HSFs is the highest of all PLA composites. HSFs could improve the dynamic mechanical properties of PLA composites more significantly than ASFs and USFs.
Effects Analysis of Super Surfacing Pavement Performance Using Epoxy Modified Emulsified Asphalt as Bonding Layer
Authors: Xuejun Wen , Huang Ming 
Published: February 2020

Abstract
A large number of studies have shown that emulsified epoxy asphalt has good cohesion and is an ideal choice for road surface treatment technology. However, after emulsification, epoxy resin needs to be emulsified and modified in a very special way to form a good combination with other structural layers in different binders. Based on super surfacing treatment technology, the combination of epoxy resin emulsification and different emulsification modification methods was discussed. Referring to the latest precision design, three bonding methods were used to bond the surface and the underlying layer. That is, no bonding layer, emulsified asphalt bonding layer and epoxy emulsified asphalt bonding layer. The pavement performance comparison test of super surface asphalt mixture was carried out. SBR-A modified emulsified asphalt and SBR-B modified emulsified asphalt were selected as the most commonly used fine surface binder. After comprehensive mix proportion design, three key indicators of wear resistance, water damage resistance and skid resistance are selected to evaluate road performance. The test process and research results show that the epoxy emulsified asphalt binder has excellent pavement performance under the design of test gradation, and has good compatibility with SBR-A modified emulsified asphalt.
Comparison of Tensile and Impact Absorption properties of Bio-Inspired Helicoidal stacked with Cross-Ply Stacked Carbon Fiber Laminate
Authors: Lim Samuel W.Y. , Beng Soh Chew , Jian Hui Shawn Lim , Ho Paul 
Published: February 2020

Abstract
Herrigbone structures are identified on the chitins of the Mantis shrimp. Bio-inspired helicoidal arrangement of composite layers can mimic these herringbone structures. First, the carbon composite samples are fabricated using the hand lay-up method, followed by a curing process using a hot press system. The impact absorption properties of these samples will be analyzed through a series of impact tests. The samples will also be tested for its tensile properties to compare the effect of plies arranged in helicoidal [0,45,90], [0,30,60,90] and Cross-ply orientations to form the laminate structure. The results showed that helicoidal samples have higher penetration tolerance and toughness as compared to Cross-ply samples during impact tests. It is found that the specimen with helicoidal stacking sequence has better debonding resistance and improved damage tolerance. The 6-ply helicoidal samples exhibits higher tensile strength as compared to 6-ply Cross-ply samples due to better fiber to matrix adhesion for helicoidal structure in the direction of pulling force.
Repair feasibility of SS416 stainless steel via laser aided additive manufacturing with SS410/Inconel625 powders
Authors: Weng Fei , Liu Yongfeng , Chew Youxiang , Wang Leilei , Lee Bing Yang , Bi Guijun 
Published: February 2020

Abstract
Laser based additive manufacturing technique has been found beneficial in fabricating complex components efficiently. In this paper, laser aided additive manufacturing with powder feeding (LAAM) was used to deposit SS410 or Inconel625 on SS416 substrate. Interfacial microstructure and mechanical properties of the deposited samples are investigated accordingly. Results indicated that deposit without obvious defects can be obtained. The interface samples exhibit comparative or slight lower tensile strength compared with the SS416 substrate. Fracture tends to occur at the SS416 side, either far from the fusion line for the SS410/SS416 sample or near the heat affected zone (HAZ) for the Inconel625/SS416 sample. Therefore, the LAAMed section are reliable enough. SS410 or Inconel625 both can be used for repair of SS416 parts.
Interlaminar fracture toughness analysis of fiber reinforced metal laminates based on APDL
Authors: Zhi Zhu Gong , Liang Zheng Chang , Sheng Xia Dong , Fa Ren Ming 
Published: February 2020

Abstract
Fiber Reinforced Metal Laminates (FRMLs) are widely used in modern industry because of excellent comprehensive properties. However, due to the existence of the interface, there will be delamination damage in their use process. Interface is the weakest part of fiber reinforced metal laminates. The bonding strength at the interface is determined by the fracture toughness of the interface. It is an important mechanical property index of fiber reinforced metal laminates. It is usually measured by a single cantilever beam test. In this paper, the finite element model of fiber reinforced metal laminate was constructed based parametric design language APDL of ANSYS to simulate the fracture roughness tests of FRMLs using element birth-death technology. The results show that the numerical simulation is very close to the experimental results. The numerical simulation is a very effective method to determine the interlaminar fracture toughness of fiber reinforced metal laminates.
Study on properties of sisal fiber modified foamed concrete
Authors: Liu Yunxue , Wang Zhen , Fan Zhaorong , Gu Jin 
Published: February 2020

Abstract
Sisal fiber modified foamed concrete was prepared with ordinary Portland cement and vegetable protein foaming agent as the base material and sisal fiber as the modifier. The distribution of fibers in the sample changes. The results show that when the fiber content is 0.75% and the fiber length is 5mm, the mechanical properties of foamed concrete are improved most obviously, and the respectively. Sisal fiber can effectively improve the shrinkage of foamed concrete. The longer sisal fiber is, the smaller the drying shrinkage of modified foamed concrete is. From the optical photos of concrete, it can be seen that at the same mixing amount (1%), fibers with lengths of 5mm and 10mm are more evenly dispersed than those with lengths of 15mm, which have little impact on the bubble holes.
Preparation and evaluation mechanical, chemical and thermal properties of hybrid jute and coir fibers reinforced bio-composites using poly-lactic acid and poly-caprolactone blends
Authors: Hossen Md. Muzammel , Feng Jianyong , Yuxiang Yin , Jiang Wenbin 
Published: February 2020

Abstract
Green composites using thermoplastics and thermosets got immense popularity long back when it newly introduced to the industry due to diminishing reliance on oil-based or gasoline materials, which causes numerous environmental problems. In this paper, bio-composites mechanical, chemical, thermal, and degradation properties of hybrid jute and coir fibers reinforced polylactic acid (PLA) investigated. Throughout the fabrication procedure of biocomposites, jute, and coir fibers characterized into three different categories raw, alkali-peroxide, and alkali-silane combined chemical treatments followed a design containing in a total of ten optimized samples. Jute and coir fibers were mixed with a solution of polycaprolactone (PCL) for better fiber-matrix adhesion prior to fabrication. The mechanical properties of alkali-silane treated reinforced fibers biocomposites improved compared to untreated fibers, which exhibited for fiber contents 40% an increase of respectively 32.8% by tensile strength 25.95% by tensile modulus, 24.58% by flexural strength, 23.64% by flexural modulus, and 26.08% by impact strength. Besides, moisture absorption, thickness swelling, thermal stability (TG), and surface chemistry analysis (FTIR) properties investigated, according to fiber-matrix contents ratio, hot-pressing time, temperature, and pressure to identify the effect of biocomposites due to chemical treatments. Moreover, the fiber surface effect of chemical treatments and interfacial adhesion morphologies observed using SEM. Eventually, alkali-silane combined optimized samples demonstrated the most desirable result in every aspect. In addition, a 90 days burial degradation performed to see the degradation flow of the biocomposites.
Improvement of optical properties of Mg doped ZnO by nanostructuring for applications in optoelectronics
Authors: Khuili M , Fazouan N , Abou El Makarim H , Atmani E H , Houmad M 
Published: February 2020

Abstract
We have studied the structural, optical, electronic and electrical properties of pure and Mg doped ZnO nanosheets compared to bulk ZnO, using the Density Functional Theory (DFT) within the Full Potential Linearized Augmented Plane Wave (FP-LAPW) formalism. The calculated band structure, total and partial densities of states show that the ZnO nanosheet have a large band gap than the other found in the bulk ZnO, which increases with increasing concentration of Mg. The absorption coefficient and optical transmittance show a red-shift after doping ZnO, whereas, the reflectivity and electrical conductivity are reduced. These good optical properties of ZnO nanosheets make it promising in optoelectronic devices, especially in solar cell application.
Thermal properties of CsPbCl3 thin films across phase transitions
Authors: Haeger Tobias , Ketterer Moritz , Bahr Johannes , Pourdavoud Neda , Runkel Manuel , Heiderhoff Ralf , Riedl Thomas 
Published: February 2020

Abstract
The local thermal conductivity, thermal diffusivity, and volumetric heat capacity of cesium lead chloride perovskite thin films are mapped simultaneously and with highest spatial resolution by a scanning near-field thermal microscope. Both, the 3D phase (CsPbCl3) and the 0D phase (Cs4PbCl6) are investigated. For CsPbCl3 thin films the variation of the thermal properties across the phase transitions in the range from room-temperature to 65 °C are analyzed. While the thermal conductivity at room temperature is ultra-low, a significant increase of the thermal conductivity is found for the cubic phase of CsPbCl3 (T > 46 °C). While only slight variations in the thermal conductivity are detectable for transitions from the monoclinic to the orthorhombic to the tetragonal phase, thermal diffusivity and volumetric heat capacity measurements are extremely sensitive to the amount of heat involved in the respective transition. It is shown that upon transition to the cubic phase of CsPbCl3 thin films, the relative increase of the volumetric heat capacity is significantly higher than that of the thermal conductivity. Thus, the thermal diffusivity in the cubic phase becomes notably lower in comparison to that of the respective phase at room temperature. An increase of the volumetric heat capacity had been theoretically predicted earlier but could not be confirmed in previous experimental studies. The findings of our thermal analysis are of great general importance for fundamental material research and for the thermal design of thin-film devices based on CsPbCl3 perovskites.
Morphologic and Immunocytochemical Features of High-Grade Serous Carcinoma of Ovary in Ascitic Fluid Effusion and Fine-Needle Aspiration Cytology
Authors: Bansal Akriti , Srinivasan Radhika , Rohilla Manish , Sundaram Archana , Rai Bhavana , Rajwanshi Arvind , Suri Vanita , Saha Subhash C , Gupta Nalini , Gupta Parikshaa , Dey Pranab 
Published: February 2020

Abstract

Objectives
High-grade serous carcinoma (HGSC) is the most common ovarian malignancy. The role of cytopathology in obtaining tissue diagnosis before institution of neoadjuvant chemotherapy (NACT) was evaluated.

Methods
All histopathology-proven HGSC specimens between 2015 and 2018 with prior cytopathologic diagnosis by ascitic fluid evaluation or fine-needle aspiration (FNA) of ovarian mass were reviewed with cell block immunocytochemistry for CK7, CK20, PAX8, WT1, and p53.

Results
Of 288 cases of HGSC, pre-NACT cytology diagnosis was established in 32% (93/288), with specific HGSC diagnoses made on ascitic fluid in 88% (82/93) and by ovarian mass FNA in 12% (11/93). The ascitic fluid showed moderate/high cellularity with papillary clusters in 76% (71/93) cases. Cell block immunocytochemistry showed tumor cells positive for CK7, PAX8, and WT1. p53 showed mutant or null-type positivity in 65% (33/51) and 33% (17/51) of cases, respectively, with 100% concordance with subsequent histopathology specimens. Poor/intermediate response to chemotherapy was shown in 75% of cases.

Conclusions
Combined assessment of cytomorphology, cell block histomorphology, and ancillary immunohistochemical testing, including PAX8, WT1, and p53, allows for specific pre-NACT diagnoses of HGSC in ascitic fluid and ovarian FNA cytology. This practice allows for initiation of chemotherapy and diminution of disease burden prior to definitive surgical therapy.
Biomedical data and computational models for drug repositioning: a comprehensive review
Authors: Luo Huimin , Li Min , Yang Mengyun , Wu Fang-Xiang , Li Yaohang , Wang Jianxin 
Published: February 2020

Abstract
Drug repositioning can drastically decrease the cost and duration taken by traditional drug research and development while avoiding the occurrence of unforeseen adverse events. With the rapid advancement of high-throughput technologies and the explosion of various biological data and medical data, computational drug repositioning methods have been appealing and powerful techniques to systematically identify potential drug-target interactions and drug-disease interactions. In this review, we first summarize the available biomedical data and public databases related to drugs, diseases and targets. Then, we discuss existing drug repositioning approaches and group them based on their underlying computational models consisting of classical machine learning, network propagation, matrix factorization and completion, and deep learning based models. We also comprehensively analyze common standard data sets and evaluation metrics used in drug repositioning, and give a brief comparison of various prediction methods on the gold standard data sets. Finally, we conclude our review with a brief discussion on challenges in computational drug repositioning, which includes the problem of reducing the noise and incompleteness of biomedical data, the ensemble of various computation drug repositioning methods, the importance of designing reliable negative samples selection methods, new techniques dealing with the data sparseness problem, the construction of large-scale and comprehensive benchmark data sets and the analysis and explanation of the underlying mechanisms of predicted interactions.
A hotspot atop: rivers of the Guyana Highlands hold high diversity of endemic pencil catfish (Teleostei: Ostariophysi: Siluriformes)
Authors: Hayes Malorie M , Paz Holden J , Stout Carla C , Werneke David C , Armbruster Jonathan W 
Published: February 2020

Abstract
The Pakaraima Mountains are an ancient mountain range along the borders of Guyana, Brazil and Venezuela. The high plateau is drained by multiple river systems in all directions. Although hypotheses have been presented for the biogeographical relationships of lowland rivers, the interconnectivity of rivers on the top of the plateau is unknown. With multiple complex rivers in a small, upland area, we predicted a high level of endemism for stream fishes and complex biogeographical relationships. We explored this with the incredibly diverse pencil catfish genus Trichomycterus. Using collections from recent expeditions to the Pakaraima Mountains of Guyana, we amplified three mitochondrial (16S, COI and Cytb) and one nuclear marker (rag2). We constructed individual gene trees and a concatenated tree to determine the placement of these taxa within the Trichomycterus of the trans-Andean/Amazonian clade. Herein, we identify six endemic lineages of Trichomycterus from the highlands of the Pakaraima Mountains. Of the identified lineages, we find two species occupying multiple basins, suggesting that Pakaraima streams either maintain connectivity or had some degree of recent connectivity.
Let’s makePulvigeragreat again: re-circumscription of a misunderstood group of Orthotrichaceae that diversified in North America
Authors: Lara Francisco , Draper Isabel , Flagmeier Maren , Calleja Juan Antonio , Mazimpaka Vicente , Garilleti Ricardo 
Published: February 2020

AbstractOrthotrichum lyellii was described in 1878 based on the crisped leaves with plane margins on its elongated and branched stems, and on the presence of brood-bodies. In Europe, these characters remain constant, but in North America several similar forms lacking propagules have been described either at the specific or infraspecific level. These were all reduced to synonyms of O. lyellii. In 2015, Orthotrichum was divided, and O. lyellii was transferred to Pulvigera, a genus thus far considered to be monospecific. In this study, the variability of P. lyellii is analysed in an integrative taxonomic framework. Morphological studies on &gt; 200 specimens, including the nomenclatural types of the taxa previously described, were combined with biogeographical and ecological evidence and with a phylogenetic reconstruction of 39 terminals based on five molecular loci. All the sources of evidence suggest the existence of four different taxa in North America, one also present on the Marquesas Islands. The study of type materials led to their identification as P. lyellii and three other taxa previously described from North America, Orthotrichum papillosum, O. lyellii var. howei and O. pringlei. These taxa differ from each other in taxonomically significant morphological characters of the gametophyte and sporophyte. The morphological diversity has led us to reinterpret Pulvigera, and to amend its description. Nomenclatural changes for the reinstated taxa are proposed, and full descriptions and an identification key for Pulvigera spp. in North America are provided.
Oat Bran Increased Fecal Butyrate and Prevented Gastrointestinal Symptoms in Patients With Quiescent Ulcerative Colitis—Randomized Controlled Trial
Authors: Nyman Margareta , Nguyen Thao Duy , Wikman Ola , Hjortswang Henrik , Hallert Claes 
Published: February 2020

Abstract

Background
Oat bran specifically increases colon butyrate concentrations and could therefore affect the progress of the disease in patients with ulcerative colitis (UC).

Methods
Patients with UC in remission were enrolled in a controlled multicenter study and randomized to eat oat bran or low-fiber wheat products.

Results
Ninety-four of the enrolled patients (n = 47 for both groups) completed the 24-week study. The oat bran group had significantly (P &lt; 0.05) higher fecal butyrate concentrations and lower serum LDL levels, while deterioration of gastrointestinal symptoms was prevented, and subjective health maintained. The control diet significantly (P &lt; 0.05) increased obstipation, reflux, and the symptom burden and had no effects on butyrate or LDL-cholesterol. The relapse rate was the same for both diets.

Conclusions
Oat bran was well tolerated when given to patients with quiescent UC.
Primary percutaneous coronary intervention for a left main bifurcation lesion without stenting using excimer laser with optical coherence tomography guidance: a case report
Authors: Hada Masahiro , Sugiyama Tomoyo , Kanaji Yoshihisa , Kakuta Tsunekazu 
Published: February 2020

Abstract

Background
Optimal strategy for treating bifurcation lesions or lesions with large thrombus in left main disease remains elusive. Excimer laser coronary angioplasty (ELCA) is a therapeutic option for thrombotic lesions in acute coronary syndrome.

Case summary
A 68-year-old man with chest pain was transferred to our emergency department, and subsequently diagnosed as inferior ST-segment elevation myocardial infarction (STEMI). Emergent coronary angiography revealed a 75% stenosis in the left main trunk (LMT). Optical coherence tomography (OCT) showed massive thrombus at the distal LMT to the ostial left anterior descending artery (LAD) and left circumflex artery (LCx). ELCA was performed in the three directions from LMT to proximal LAD, proximal LCx, and obtuse marginal branch. OCT after ELCA showed reduction of thrombus and no apparent plaque rupture or calcification, implying that coronary thrombosis was caused by OCT-defined plaque erosion. Intracoronary electrocardiogram of the LCx showed ST-segment elevation which corresponded to inferior ST-segment elevation, whereas no intracoronary electrocardiogram ST-segment elevation was detected for LAD. Taking all of the data including angiographic appearance, OCT-derived residual lumen size and residual thrombus volume, and strategic options into consideration, we completed percutaneous coronary intervention without stent deployment. He has been free from any cardiac events thereafter for 8 months.

Discussion
Optimal strategy of coronary intervention for bifurcation lesions, especially LMT bifurcations, remains elusive. ELCA may have a potential to safely reduce intracoronary thrombus in patients presenting with acute coronary syndrome with OCT guidance.