bluuebunny/crossref_metadata_2025_split huggingface dataset:
3D Printing of Viscoelastic Suspensions via Digital Light Synthesis for Tough Nanoparticle–Elastomer Composites
Authors: Wang Kaiyang , Pan Wenyang , Liu Zheng , Wallin Thomas J. , van Dover Geoffrey , Li Shuo , Giannelis Emmanuel P. , Menguc Yigit , Shepherd Robert F. 
Published: May 2020

AbstractThe rheological parameters required to print viscoelastic nanoparticle suspensions toward tough elastomers via Digital Light Synthesis (DLS) (an inverted projection stereolithography system) are reported. With a model material of functionalized silica nanoparticles suspended in a poly(dimethylsiloxane) matrix, the rheological‐parameters‐guided DLS can print structures seven times tougher than those formed from the neat polymers. The large yield stress and high viscosity associated with these high concentration nanoparticle suspensions, however, may prevent pressure‐driven flow, a mechanism essential to stereolithography‐based printing. Thus, to better predict and evaluate the printability of high concentration nanoparticle suspensions, the boundary of rheological properties compatible with DLS is defined using a non‐dimensional Peclet number (Pe). Based on the proposed analysis of rheological parameters, the border of printability at standard temperature and pressure (STP) is established by resin with a silica nanoparticle mass fraction (ϕsilica) of 0.15. Above this concentration, nanoparticle suspensions have Pe > 1 and are not printable. Beyond STP, the printability can be further extended to ϕsilica = 0.20 via a heating module with lower shear rate to reduce the Pe < 1. The printed rubber possesses even higher toughness (Γ ≈ 155 kJ m−3), which is 40% higher over that of ϕsilica = 0.15.
A Bright and Stable Violet Carbon Dot Light‐Emitting Diode
Authors: Wang Xiao , Zhang Xinyu , Gu Xiaoqing , Nie Haodong , Zhu Mengmeng , Wang Bo , Gao Jin , Tao Yichen , Zhu Yizhi , Huang Hui , Xu Chunxiang , Shao Mingwang , Liu Yang , Liao Liangsheng , Kang Zhenhui 
Published: May 2020

AbstractViolet light‐emitting diodes (LEDs) with emission at 400 nm are very important for solid‐state lighting, high‐density information storage, display technology, and biology medical treatment. Wide band‐gap semiconductors and/or the semiconductor quantum dots (QDs), typically based on heavy metals such as cadmium and lead, are promising candidates for the violet LEDs, but so far these have had external quantum efficiencies (EQEs) lower than 0.31% (luminance 147.6 cd cm−2; 410 nm). Herein, violet light‐emitting materials and the violet LED devices based on carbon dots (CDots) are presented. The CDots have absolute photoluminescence quantum yield of 23.9% and produce two‐narrow‐peak emission at 382 and 401 nm with narrow full‐width at half‐maximum about 30 nm, respectively. The violet LEDs based on these CDots display high performance with a maximum luminance of 163 cd m−2 (electroluminescence peak located at 408 nm; Commission International de I'Eclairage color coordinate (0.180, 0.121)) and high EQE of 0.831%, exceeding that of previously reported semiconductor QDs‐based violet LEDs. Moreover, these CDots‐based violet LEDs have a high current efficiency of 0.62 cd A−1, a long lifetime (T50, 50 h), as well as a low turn‐on voltage of 3.7 V.
Battery‐Less Soft Millirobot That Can Move, Sense, and Communicate Remotely by Coupling the Magnetic and Piezoelectric Effects
Authors: Lu Haojian , Hong Ying , Yang Yuanyuan , Yang Zhengbao , Shen Yajing 
Published: May 2020

AbstractThe soft millirobot is a promising candidate for emerging applications in various in‐vivo/vitro biomedical settings. Despite recent success in its design and actuation, the absence of sensing ability makes it still far from being a reality. Here, a radio frequency identification (RFID) based battery‐less soft millirobot that can move, sense, and communicate remotely by coupling the magnetic and piezoelectric effects is reported. This design integrates the robot actuation and power generation units within a thin multilayer film (<0.5 mm), i.e., a lower magnetic composite limb decorated with multiple feet imparts locomotion and a flexible piezoceramic composite film recovers energy simultaneously. Under a trigger of external magnetic guidance, the millirobot can achieve remote locomotion, environment monitoring, and wireless communication with no requirement of any on‐board battery or external wired power supply. Furthermore, this robot demonstrates the sensing capability in measuring environment temperature and contact interface by two different sensing models, i.e., carried‐on and build‐in sensing mode, respectively. This research represents a remarkable advance in the emerging area of untethered soft robotics, benefiting a broad spectrum of promising applications, such as in‐body monitoring, diagnosis, and drug delivery.
Is allelopathy from winter cover crops affecting row crops?
Authors: Koehler‐Cole Katja , Everhart Sydney E. , Gu Yan , Proctor Christopher A. , Marroquin‐Guzman Margarita , Redfearn Daren D. , Elmore Roger W. 
Published: May 2020

AbstractCover crops (CC) have been explored in corn (Zea mays L.), cotton (Gossypium hirsutum L.), soybean [Glycine max (L.) Merr.], and wheat (Triticum aestivum L.) systems for their allelopathic potential to control weeds. However, allelopathic compounds may negatively affect these row crops by reducing germination, emergence, and grain yields. We reviewed studies that document allelopathic effects of CC on subsequent row crops in field and laboratory settings. We summarize the influence of CC management, including biomass production, planting and termination timing on allelochemical quantity. Our review found few studies documenting allelopathic effects of CC on row crops in field settings. Studies that focus on understanding yield impacts of CC on row crops should be designed to include allelopathic CC–row crop interactions. Understanding the link between CC management and allelopathic dynamics can help avoid impacts on the growth and productivity of the subsequent row crop.
Robust and Transient Write‐Once‐Read‐Many‐Times Memory Device Based on Hybrid Perovskite Film with Novel Room Temperature Molten Salt Solvent
Authors: Li Bixin , Yin Hao , Xia Fei , Sun Bo , Zhang Shiyang , Xia Yingdong , Chen Yonghua , Huang Wei 
Published: May 2020

AbstractOrganic–inorganic hybrid perovskites (OIHPs) have emerged as a novel class of functional materials with applications in solar cells, photodetectors, light‐emitting diodes, and resistive switching memories. Generally, perovskite films are fabricated with toxic solvents and antisolvent technique under inert atmosphere, which limits the commercial applications of OIHP‐based devices. To address this issue, uniform CH3NH3PbBr3 (MAPbBr3) film is fabricated through a facile one‐step spin‐coating method by directly dissolving perovskite precursor in a room‐temperature molten salt methylammonium acetate under air ambient condition. The nonvolatile resistive switching devices based on MAPbBr3 exhibit robust and reproducible write‐once‐read‐many‐times (WORM) memory properties with a large ON/OFF ratio (106), reliable retention properties (104 s), and somewhat ternary resistive characteristic. The conductive filaments in the perovskite thin film are proposed to induce the electrical conductivity switching. Additionally, the MAPbBr3 films can be dissolved rapidly in deionized water within 5 s, showing the transient characteristics. This work demonstrates a new perspective on the perovskite film fabrication and shows the potential application of MAPbBr3 in transient WORM devices.
Introducing Highly Redox‐Active Atomic Centers into Insertion‐Type Electrodes for Lithium‐Ion Batteries
Authors: Ma Yanjiao , Ma Yuan , Giuli Gabriele , Euchner Holger , Groß Axel , Lepore Giovanni Orazio , d'Acapito Francesco , Geiger Dorin , Biskupek Johannes , Kaiser Ute , Schütz Hanno M. , Carlsson Anna , Diemant Thomas , Behm Rolf Jürgen , Kuenzel Matthias , Passerini Stefano , Bresser Dominic 
Published: May 2020

AbstractThe development of alternative anode materials with higher volumetric and gravimetric capacity allowing for fast delithiation and, even more important, lithiation is crucial for next‐generation lithium‐ion batteries. Herein, the development of a completely new active material is reported, which follows an insertion‐type lithiation mechanism, metal‐doped CeO2. Remarkably, the introduction of carefully selected dopants, herein exemplified for iron, results in an increase of the achievable capacity by more than 200%, originating from the reduction of the dopant to the metallic state and additional space for the lithium ion insertion due to a significant off‐centering of the dopant atoms in the crystal structure, away from the original Ce site. In addition to the outstanding performance of such materials in high‐power lithium‐ion full‐cells, the selective reduction of the iron dopant under preservation of the crystal structure of the host material is expected to open up a new field of research.
Ignition mechanism of flammable dust and dust mixtures: An insight through thermogravimetric/differential scanning calorimetry analysis
Authors: Portarapillo Maria , Luciani Giuseppina , Sanchirico Roberto , Di Benedetto Almerinda 
Published: May 2020

AbstractUnderstanding flame propagation mechanism and thermal behavior of flammable dusts is of crucial importance, since they strongly affect the flammability and explosion parameters. In a previous work, we found that the volatile point of anthraquinone/nicotinic acid mixtures can be lower than the one of the pure dusts, suggesting a synergistic effect. In this work, thermogravimetric and differential scanning calorimetry analyses of anthraquinone/niacin mixtures were carried out both in open and closed cup, to explain the observed synergistic behavior. FTIR analysis on solid residue and evolved gaseous species showed that the mixtures change compositions during the thermal treatment, without undergoing any chemical transformation. The thermal behavior of dust mixtures reveals the presence of a eutectic point, resulting in a volatiles production at lower temperature and accelerating the flame propagation.
Spondyloepimetaphyseal dysplasia with elevated plasma lysosomal enzymes caused by homozygous variant in MBTPS1
Authors: Carvalho Daniel R. , Speck‐Martins Carlos E. , Brum Jaime M. , Ferreira Carlos R. , Sobreira Nara L. M. 
Published: May 2020

AbstractVariants in MBTPS1 (membrane‐bound transcription factor peptidase, site 1) encoding the protein convertase site‐1 protease (S1P) were recently reported in a single individual with skeletal dysplasia and elevated plasma lysosomal enzymes. Here, we report the second individual with this newly described autosomal recessive spondyloepiphyseal dysplasia (OMIM #618392), presenting severe growth retardation, cataract and dysmorphic features, mainly retromicrognathia. Epilepsy and craniosynostosis were novel findings in our proband. She was found to be homozygous for a novel nonsense variant p.Trp983Ter in MBTPS1. In addition, she had normal levels of lysosomal enzyme activity in leukocytes but elevated levels in plasma. Our description confirms the existence of this new skeletal dysplasia and expands the phenotype and genotype of the disease.
Coppery titi monkey (Plecturocebus cupreus) pairs display coordinated behaviors in response to a simulated intruder
Authors: Mercier Fanny , Witczak Lynea R. , Bales Karen L. 
Published: May 2020

AbstractMate guarding and coordinated behaviors between partners are important for the maintenance of monogamous pair bonds. To study the effects of a perceived unfamiliar social intruder on females' behavior, we used coppery titi monkeys (Plecturocebus cupreus). We examined the effects of male aggressive temperament on females' behavior and the effects of each behavior performed by the male on the same female behavior. Using a mirror, we simulated a social intruder in the home territory and scored behaviors using an established ethogram. Based on our analysis of self‐directed behaviors, females do not recognize themselves in the mirror. We then used general linear mixed models to predict percent change in females' behaviors as a function of (a) males' temperament, (b) males' behavior, and (c) an interaction between males' temperament and behavior. Male temperament did not significantly predict female behavior for any of our best fitting models. For percent change in female lip‐smacking, male lip‐smacking significantly predicted female lip‐smacking (β = 0.74, SE = 0.22, t = 3.39; p = .004). There was a positive correlation between male and female agonistic behaviors such as back‐arching/tail‐lashing (β = 0.51, SE = 0.23, t = 2.22; p = .04) and for anxiety‐related behaviors such as leaving the partner (β = 0.50, SE = 0.19, t = 2.68; p = .015), locomotion duration (β = 0.19, SE = 0.06, t = 2.98; p = .02), and locomotion frequency (β = 0.71, SE = 0.14, t = 5.17; p < .001). These findings on coordination of pair‐mate behaviors may explain how titi monkeys display pair bond strength and ensure their reproductive success.
Protracted course of coronavirus disease with severe acute respiratory distress syndrome: a case report
Authors: Miyamoto Kyohei , Yonemitsu Takafumi , Tanaka Rikako , Nakashima Tsuyoshi , Shibata Mami , Funahashi Ryosuke , Yamasaki Keiko , Yamada Mario , Tamoto Kaori , Akamatsu Keiichiro , Nishio Machiko , Yamaue Hiroki , Kato Seiya 
Published: May 2020

BackgroundCoronavirus disease (COVID‐19) is a growing concern worldwide. Approximately 5% of COVID‐19 cases require intensive care. However, the optimal treatment for respiratory failure in COVID‐19 patients is yet to be determined.Case presentationA 79‐year‐old man with severe acute respiratory distress syndrome due to COVID‐19 was admitted to our intensive care unit. Prone ventilation was effective in treating the patient’s hypoxemia. Furthermore, the patient received lung protective ventilation with a tidal volume of 6–8 mg/kg (predicted body weight). However, the patient’s respiratory failure did not improve and he died 16 days after admission because of multiple organ failure. Serial chest computed tomography revealed a change from ground‐glass opacity to consolidation pattern in both lungs.ConclusionsWe report a protracted case of COVID‐19 in a critically ill patient in Japan. Although prone ventilation could contribute to treating hypoxemia, its efficacy in preventing mortality from COVID‐19 is unknown.
Quantum Dots for Display Applications
Authors: Shu Yufei , Lin Xing , Qin Haiyan , Hu Zhuang , Jin Yizheng , Peng Xiaogang 
Published: May 2020

AbstractThis article offers a materials‐chemistry perspective for colloidal quantum dots (QDs) in the field of display, including QD‐enhanced liquid‐crystal‐display (QD‐LCD) and QD‐based light‐emitting‐diodes (QLEDs) display. The rapid successes of QDs for display in the past five years are not accidental but have a deep root in both maturity of their synthetic chemistry and their unique chemical, optical, and optoelectronic properties. This article intends to discuss the natural match of QD emitters for display and chemical means to eventually bring about their full potential.
Light/Electricity Energy Conversion and Storage for a Hierarchical Porous In2S3@CNT/SS Cathode towards a Flexible Li‐CO2 Battery
Authors: Guan De‐Hui , Wang Xiao‐Xue , Li Ma‐Lin , Li Fei , Zheng Li‐Jun , Huang Xiao‐Lei , Xu Ji‐Jing 
Published: May 2020

AbstractA photoinduced flexible Li‐CO2 battery with well‐designed, hierarchical porous, and free‐standing In2S3@CNT/SS (ICS) as a bifunctional photoelectrode to accelerate both the CO2 reduction and evolution reactions (CDRR and CDER) is presented. The photoinduced Li‐CO2 battery achieved a record‐high discharge voltage of 3.14 V, surpassing the thermodynamic limit of 2.80 V, and an ultra‐low charge voltage of 3.20 V, achieving a round trip efficiency of 98.1 %, which is the highest value ever reported (<80 %) so far. These excellent properties can be ascribed to the hierarchical porous and free‐standing structure of ICS, as well as the key role of photogenerated electrons and holes during discharging and charging processes. A mechanism is proposed for pre‐activating CO2 by reducing In3+ to In+ under light illumination. The mechanism of the bifunctional light‐assisted process provides insight into photoinduced Li‐CO2 batteries and contributes to resolving the major setbacks of the system.
Synthesis of nickel sulfide and nickel–iron sulfide nanoparticles from nickel dithiocarbamate complexes and their photocatalytic activities
Authors: Thirumaran Subbiah , Gurumoorthy Govindasamy , Arulmozhi Rajaram , Ciattini Samuele 
Published: May 2020

Abstract[Ni(dtc)2] (dtc = N‐(pyrrole‐2‐ylmethyl)‐N‐thiophenemethyldithiocarbamate (1), N‐methylferrocenyl‐N‐(2‐phenylethyl)dithiocarbamate (2), N‐furfuryl‐N‐methylferrocenyldithiocarbamate (3), and (N‐[pyrrole‐2‐ylmethyl]‐N‐thiophenemethyldithiocarbamato‐S,S′)(thiocyanato‐N)(triphenylphosphine)nickel(II) (4) complexes were prepared and characterized by elemental analysis, infrared, ultraviolet–visible, and nuclear magnetic resonance (1H and 13C) spectroscopies. The data were consistent with the formation of square planar nickel(II) complexes, which was confirmed by single‐crystal X‐ray diffraction studies on 2 and 4. Fe···Fe interactions exhibited by complex 2 led to supramolecular aggregation. The structure of 4 reveals intermolecular and intramolecular C‐H···Ni anagostic interactions. The anion‐sensing properties of 2 were studied with halide ions by cyclic voltammetry. It was observed that 2 acts as sensor for bromide. Complexes 1, 2, and 3, were utilized to prepare nickel sulfide, nickel–iron sulfide‐1, and nickel–iron sulfide‐2, respectively. The composition, structure, morphology, and optical properties of nickel sulfide and nickel–iron sulfides were examined using powder X‐ray diffraction, transmission electron microscopy, energy‐dispersive X‐ray spectroscopy, ultraviolet–visible, fluorescence, and infrared spectroscopy. Powder X‐ray diffraction patterns of nickel sulfide, nickel–iron sulfide‐1, and nickel–iron sulfide‐2 indicate the formation of orthorhombic Ni9S8, cubic NiFeS2, and cubic Ni2FeS4, respectively. The photocatalytic activities of as‐prepared nickel sulfide and nickel–iron sulfide‐1 nanoparticles were investigated for photodegradation of methylene blue and rhodamine‐B under ultraviolet irradiation. Nickel–iron sulfide‐1 nanoparticles show slightly higher photodegradation efficiency compared with the nickel sulfide nanoparticles.
Extracellular matrix: The proteins that function throughout the body
Authors: Svoboda Kathy K. H. , Gordon Marion K. 
Published: May 2020

ABSTRACTThe idea and meetings that planned this issue focused on extracellular matrix (ECM) started over 4 years ago. The invitations were sent to investigators over 2 years ago and manuscripts have been submitted, reviewed, and edited since the summer and fall of 2018. Most of the manuscripts were published in early view in 2019, and we are thrilled to share the final collection. This volume contains 6 reviews, 13 original research papers, and 4 remembrances. Marion (Emmy) Gordon and I organized the articles into seven topic areas, including ECM structure, genetics, and development; cancer; vascular structures and development; inflammation and wound healing; collagen in special structures; cornea and other ocular tissues; and extracellular vesicles. Anat Rec, 2020. © 2020 American Association for Anatomy
First‐order virtual synchronization: A new methodology for online identification of structural damping in presence of seismic excitation
Authors: Ghaderi Pedram 
Published: May 2020

AbstractThis paper proposes a new method for online identification of damping properties in seismically excited structures. It is a major extension of the recently developed Virtual Synchronization Method (VSM) with the following benefits: Its formulation is simpler and contains fewer design parameters. It includes a sufficient condition which can be validated online to ensure whether it is successful in identification of the structural damping model. It is assumed that the parameters of the damping model are fully unknown whereas the stiffness and mass of the structure are known. Online measurements of the ground motion acceleration, displacement and velocity vectors are available. Using these data, a virtual copy of the original structure is created. Then, the error between the states of the two systems is calculated. It is employed for designing an appropriate virtual controller which forces the virtual system to synchronize with the original one. Consequently, the states of these two systems are used to propose a nonlinear adaptive law to estimate the unknown parameters of the damping model. Provided numerical examples show that the proposed online identification method is efficiently fast, promising and worthy of further studies.
Dicer and Drosha expression in patients with nephrotic syndrome
Authors: Hejazian Seyyedeh Mina , Rahbar Saadat Yalda , Bahmanpour Zahra , Hosseiniyan Khatibi Seyed Mahdi , Ardalan Mohammadreza , Zununi Vahed Sepideh 
Published: May 2020

AbstractPodocytes play an essential role in the regulation of glomerular filtration and the appropriate function of the kidney. Podocytes injury is involved in the pathogenesis of nephrotic syndrome (NS), a common renal glomerulus dysfunction characterized by proteinuria. Some in vivo studies in Dicer/Drosha knockout mice indicate the importance of Dicer, Drosha, and microRNAs (miRNAs) in the pathogenesis of NS. In the present study, the expression levels of Dicer and Drosha along with miR‐30 family, miR‐186, miR‐193, and miR‐217 were evaluated in peripheral blood mononuclear cell samples of patients with NS (N = 60) using real‐time PCR. Dicer expression level in NS patients was significantly upregulated when compared to healthy controls (p = .008). No significant change was observed in the Drosha expression level in the NS group. Upregulated levels of the studied microRNAs were observed in NS group in comparison to controls, the miR‐30c‐5p (p = .005) and miR‐193‐3p (p = .041) were statistically significant. In conclusion, dysregulation in expression level of Dicer and Drosha and consequently, alteration in miRNA levels are involved in the pathophysiology of NS.
The Bulk Osteosarcoma and Osteosarcoma Stem Cell Activity of a Necroptosis‐Inducing Nickel(II)–Phenanthroline Complex
Authors: Eskandari Arvin , Flamme Marie , Xiao Zhiyin , Suntharalingam Kogularamanan 
Published: May 2020

AbstractWe report the anti‐osteosarcoma and anti‐osteosarcoma stem cell (OSC) properties of a nickel(II) complex, 1. Complex 1 displays similar potency towards bulk osteosarcoma cells and OSCs, in the micromolar range. Notably, 1 displays similar or better OSC potency than the clinically approved platinum(II) anticancer drugs cisplatin and carboplatin in two‐ and three‐dimensional osteosarcoma cell cultures. Mechanistic studies revealed that 1 induces osteosarcoma cell death by necroptosis, an ordered form of necrosis. The nickel(II) complex, 1 triggers necrosome‐dependent mitrochondrial membrane depolarisation and propidium iodide uptake. Interestingly, 1 does not evoke necroptosis by elevating intracellular reactive oxygen species (ROS) or hyperactivation of poly ADP ribose polymerase (PARP‐1). ROS elevation and PARP‐1 activity are traits that have been observed for established necroptosis inducers such as shikonin, TRAIL and glutamate. Thus the necroptosis pathway evoked by 1 is distinct. To the best of our knowledge, this is the first report into the anti‐osteosarcoma and anti‐OSC properties of a nickel complex.