bluuebunny/crossref_metadata_2025_split huggingface dataset:
N‐Doped Carbon Nanotubes Derived from Graphene Oxide with Embedment of FeCo Nanoparticles as Bifunctional Air Electrode for Rechargeable Liquid and Flexible All‐Solid‐State Zinc–Air Batteries
Authors: Hao Xiaoqiong , Jiang Zhongqing , Zhang Baoan , Tian Xiaoning , Song Changsheng , Wang Likui , Maiyalagan Thandavarayan , Hao Xiaogang , Jiang Zhong‐Jie 
Published: March 2021

AbstractThis work reports a novel approach for the synthesis of FeCo alloy nanoparticles (NPs) embedded in the N,P‐codoped carbon coated nitrogen‐doped carbon nanotubes (NPC/FeCo@NCNTs). Specifically, the synthesis of NCNT is achieved by the calcination of graphene oxide‐coated polystyrene spheres with Fe3+, Co2+ and melamine adsorbed, during which graphene oxide is transformed into carbon nanotubes and simultaneously nitrogen is doped into the graphitic structure. The NPC/FeCo@NCNT is demonstrated to be an efficient and durable bifunctional catalyst for oxygen evolution (OER) and oxygen reduction reaction (ORR). It only needs an overpotential of 339.5 mV to deliver 10 mA cm−2 for OER and an onset potential of 0.92 V to drive ORR. Its bifunctional catalytic activities outperform those of the composite catalyst Pt/C + RuO2 and most bifunctional catalysts reported. The experimental results and density functional theory calculations have demonstrated that the interplay between FeCo NPs and NCNT and the presence of N,P‐codoped carbon structure play important roles in increasing the catalytic activities of the NPC/FeCo@NCNT. More impressively, the NPC/FeCo@NCNT can be used as the air‐electrode catalyst, improving the performance of rechargeable liquid and flexible all‐solid‐state zinc–air batteries.
Spatiotemporal Immunomodulation Using Biomimetic Scaffold Promotes Endochondral Ossification‐Mediated Bone Healing
Authors: Liu Yutong , Yang Zhaogang , Wang Lixuan , Sun Lili , Kim Betty Y. S. , Jiang Wen , Yuan Yuan , Liu Changsheng 
Published: March 2021

AbstractBiomaterials play an important role in treating bone defects by promoting direct osteogenic healing through intramembranous ossification (IO). However, majority of the body's bones form via cartilaginous intermediates by endochondral ossification (EO), a process that has not been well mimicked by engineered scaffolds, thus limiting their clinical utility in treating large segmental bone defects. Here, by entrapping corticosteroid dexamethasone within biomimetic recombinant human bone morphogenetic protein (rhBMP)‐loaded porous mesoporous bioglass scaffolds and regulating their release kinetics, significant degree of ectopic bone formation through endochondral ossification is achieved. By regulating the recruitment and polarization of immune suppressive macrophage phenotypes, the scaffold promotes rapid chondrogenesis by activating Hif‐3α signaling pathway in mesenchymal stem cells, which upregulates the expression of downstream chondrogenic genes. Inhibition of Hif‐3α signaling reverses the endochondral ossification phenotype. Together, these results reveal a strategy to facilitate developmental bone growth process using immune modulating biomimetic scaffolds, thus providing new opportunities for developing biomaterials capable of inducing natural tissue regeneration.
Photoinduced Synaptic Behavior of InxTiyO Thin Film Transistors
Authors: Lim Jung Wook , Kim Taeyoon , Kim Jieun , Yun Sun Jin , Jung Kwang Hoon , Park Min A 
Published: March 2021

AbstractHerein, InxTiyO films are successfully deposited via the atomic layer deposition method, which involves sub‐cycles of In2O3 and TiO2 application at a growth temperature of 200 °C. InxTiyO films are an excellent alternative to In2O3 films for use in channels of thin film transistors (TFTs), and can be used to avoid issues such as metal‐like conduction characteristics and undesirable negative shifts. Adjusting the addition of TiO2 to In2O3 enables modulation of the cut‐off wavelength in the UV region. However, the addition of TiO2 adversely affects the on‐current level. The TiO2 content in the InxTiyO films is optimized based on photosensitivity and current level, wherein the films are used as the channel layer in photo‐TFTs; consequently, a photo‐synaptic behavior is achieved. The InxTiyO film‐based memory devices are programmed and erased using UV light and gate voltage, respectively, wherein deep trap sites at the interface between the InTiO and Al2O3 layers facilitate the retention of charge during memory operation. The memory on/off ratio deteriorates slightly with a lapse in retention time of 4 × 104 s after 20 program/erase (P/E) cycles. Moreover, in the InxTiyO‐based TFTs, excellent linearity is achieved during potentiation due to a good photo‐synaptic behavior.
An Efficient Approach Based on Tuned Nanoionics to Maximize Memory Characteristics in Ag‐Based Devices
Authors: Banerjee Writam , Kim Seong Hun , Lee Seungwoo , Lee Donghwa , Hwang Hyunsang 
Published: March 2021

AbstractThis study demonstrates a systematic approach to modulate the oxygen vacancy concentration within a Ag/HfO2/Pt based resistive switching device and control the volatile and nonvolatile switching through tuned nanoionics. A synergistic effect of oxygen vacancy formation and metal ion migration generates several shades of storage behavior in the same matrices. An optimized vacancy engineering methodology is investigated to control the anatomy of the filament formation after pre‐forming process from 100 pA to 10 µA. More specifically, the impact of pre‐forming driven oxygen vacancy path is identified, which successfully produces volatile threshold switching and nonvolatile memory switching at the same compliance. The nature of the filamentary switching is modeled through physical analysis and density function theory calculations. Pre‐forming driven oxygen vacancy concentration modulation is guiding the formation of Ag‐based hybrid filament and conducts the switching process. As a result, the device shows highly stable memory switching with tunable operating conditions, multiple storage levels and successfully overcome the endurance/retention dilemma with high endurance of >108 and >1‐day retention at 150 °C. This work establishes the possibility to design highly efficient metal‐filament based devices through proper tuning of nanoionics, which can fulfil the need of futuristic devices.
Observation of Si 2p Core‐Level Shift in Si/High‐κ Dielectric Interfaces Containing a Negative Charge
Authors: Lehtiö Juha‐Pekka , Rad Zahra Jahanshah , Granroth Sari , Yasir Muhammad , Punkkinen Marko , Punkkinen Risto , Hedman Hannu‐Pekka , Rueff Jean‐Pascal , Rauha Ismo T.S. , Savin Hele , Laukkanen Pekka , Kokko Kalevi 
Published: March 2021

AbstractNegative static charge and induced internal electric field have often been observed in the interfaces between silicon and high‐κ dielectrics, for example Al2O3 and HfO2. The electric field provides either beneficial (e.g., field‐effect passivation) or harmful (e.g., voltage instability) effect depending on the application. Different intrinsic and extrinsic defects in the dielectric film and interface have been suggested to cause the static charge but this issue is still unresolved. Here spectroscopic evidence is presented for a structural change in the interfaces where static charge is present. The observed correlation between the Si core‐level shift and static negative charge reveals the role of Si bonding environment modification in the SiO2 phase. The result is in good agreement with recent theoretical models, which relate the static charge formation to interfacial atomic transformations together with the resulting acceptor doping of SiO2.
Mechanistic investigation in ultrasound‐assisted interesterification using non‐edible oil blends and heterogeneous catalyst
Authors: Malani Ritesh S. , Pradhan Sushobhan , Goyal Arun , Moholkar Vijayanand S. 
Published: March 2021

AbstractThis study explores the mechanistic issues of ultrasound‐assisted interesterification through identification of links between physics and chemistry of the process. Notably, the interesterification reactions have been carried out using blended feedstock of non‐edible oils—keeping in view requirements for large‐scale processes. The reaction system consisted of blended non‐edible oils, methyl acetate and a solid (Cu2O) catalyst. Initial optimization of the process parameters was done using statistical design. To get insight into physical mechanism of interesterification process, reactants/products profiles in control (mechanical agitation) and test (sonication) experiments were analysed using the Langmuir–Hinshelwood–Hougen–Watson type kinetic model. The relative adsorption equilibrium constants required (to fit the kinetic model) were obtained using binary composite isotherm coupled with the non‐random two‐liquid (NRTL) model for activity coefficients. Kinetic constants of interesterification showed two times rise with sonication, while the adsorption equilibrium constants reduced slightly. Activation energy of reaction reduced from 89.04 to 66.97 kJ/mol, which is attributed to reduction in mass transfer barriers due to intense microconvection generated by sonication.
Comparative chloroplast genomes and phylogenetic analysis of Aquilegia
Authors: Zhang Wei , Wang Huaying , Dong Jianhua , Zhang Tengjiao , Xiao Hongxing 
Published: March 2021

PremiseAquilegia is an ideal taxon for studying the evolution of adaptive radiation. Current phylogenies of Aquilegia based on different molecular markers are inconsistent, and therefore a clear and accurate phylogeny remains uncertain. Analyzing the chloroplast genome, with its simple structure and low recombination rate, may help solve this problem.MethodsNext‐generation sequencing data were generated or downloaded for Aquilegia species, enabling their chloroplast genomes to be assembled. The assemblies were used to estimate the genome characteristics and infer the phylogeny of Aquilegia.ResultsIn this study, chloroplast genome sequences were assembled for Aquilegia species distributed across Asia, North America, and Europe. Three of the genes analyzed (petG, rpl36, and atpB) were shown to be under positive selection and may be related to adaptation. The phylogenetic tree of Aquilegia showed that its member species formed two clades with high support, North American and European species, with the Asian species being paraphyletic; A. parviflora and A. amurensis clustered with the North American species, while the remaining Asian species were found in the European clade. In addition, A. oxysepala var. kansuensis should be considered as a separate species rather than a variety.DiscussionThe complete chloroplast genomes of these Aquilegia species provide new insights into the reconstruction of the phylogeny of related species and contribute to the further study of this genus.
Storytelling wisdom: Story, information, andDIKW
Authors: McDowell Kate 
Published: March 2021

AbstractMost information science (IS) definitions of information center individual rather than collective meaning‐making. Because stories are constituted through narrative experience, and audiences are partly constitutive of the stories told to and with them, storytelling offers a framework for researching collective experiences of information. Stories are simultaneously empirical and socially constructed, bridging a key epistemological divide in IS. Storytelling as paradigm shift is explored and demonstrated in three sections that (a) define story and storytelling, (b) describe how story and storytelling can extend the data, information, knowledge, and wisdom (DIKW) pyramid, and (c) revise DIKW as a new storytelling S‐DIKW framework. Future IS storytelling research should account for story and the dynamics of storytelling not merely as a subset of information or of information behavior, but as a fundamental information form.
Probing Dynamic Features of Phagosome Maturation in Macrophage using Au@MnOx@SiO2 Nanoparticles as pH‐Sensitive Plasmonic Nanoprobes
Authors: Shang Jinhui , Yang Qian , Fan Wenjun , Chen Yancao , Tang Decui , Guo Haowei , Xiong Bin , Huang Shuangyan , Zhang Xiao‐Bing 
Published: March 2021

AbstractPhagosome maturation in macrophage is essential to the clearance of pathogenic materials in host defence but the dynamic features remain difficult to be measured in real time. Herein, we reported the multilayered Au@MnOx@SiO2 nanoparticle as a robust pH‐sensitive plasmonic nanosensor for monitoring the dynamic acidification features over the phagosome maturation process in macrophage under darkfield microscopy. For this multilayered nanosensor, the gold nanoparticle core plays a role of signal reporter, the MnOx shell and the outmost SiO2 act as the sensing layer and the protecting layer, respectively. After subject to the acidic buffer solution, the MnOx layer in the multilayered nanoprobe could be decomposed rapidly, resulting in a remarkable spectral shift and color change under darkfield microscopy. We demonstrated this nanosensor for the investigation of single phagosome acidification dynamics by monitoring the color changes of nanoprobes after phagocytosis over time. The nanoprobes after phagocytosized in macrophage displayed a slight color change within the first hour and then cost several minutes to change from red to green in the next stage, indicating the phagosome undergoes a slow first and then fast acidification feature as well as a slow‐to‐fast acidification translation over the phagosome maturation process. Moreover, we validated that the slow‐to‐fast acidification translation was dependent on the activation of V‐ATPase from the ATP depletion assay. We believed that this nanosensor is promising for studying the dynamic acidification features as well as disorders in phagosome maturation in phagocytic cells, which might provide valuable information for understanding the disease pathogenesis related to phagosome dysfunctions.
New spectroscopic methods for determination of dexlansoprazole using mercurochrome
Authors: Roshdy Aya , Elmansi Heba , Shalan Shereen , El‐Brashy Amina 
Published: March 2021

AbstractNew spectroscopic methods were developed for dexlansoprazole estimation in capsule formulation based on the formation of a reaction between dexlansoprazole and Mercurochrome (MER) at pH 3.7. The formed complex was measured spectrophotometrically (Method I) at 557 nm and spectrofluorometrically (Method II) at 300 nm/538 nm, because the drug caused quantitative quenching of the native fluorescence of Mercurochrome. The spectrophotometric method was linear over the concentration 25–55 μg/ml with a limit of detection (LOD) of 1.15 μg/ml and a limit of quantification (LOQ) of 3.48 μg/ml. The spectrofluorometric method had a linear range 20–45 μg/ml with an LOD of 1.13 μg/ml and an LOQ of 3.45 μg/ml. The suggested methods were used to analyze capsules to test the interference from excipients and the data indicated good selectivity. Data obtained were statistically analyzed and were favourably good. The new methods are environmentally benign and depend on distilled water mainly as the diluting solvent. This property was confirmed by assessing their greenness.
Epidemiological characteristics and forecasting incidence for patients with breast cancer in Shantou, Southern China: 2006–2017
Authors: Lin Huang , Shi Lei , Zhang Jiachi , Zhang Jinchan , Zhang Chichen 
Published: March 2021

AbstractThis study aimed to explore the epidemiological characteristics of breast cancer and establish an Exponential Smoothing (ETS) and Autoregressive Integrated Moving Average (ARIMA) models to predict the development of incidence in Shantou. This study has a large sample size, strong representativeness, and wide‐ranging and comprehensive medical insurance information, which can fill the gaps in basic epidemiological research on breast cancer in Shantou. Successful completion of this study is a helpful tool to understand the epidemiology of Guangdong Province and Southern China. This study also provides data and scientific references for the government and future research on breast cancer prevention and control. This retrospective study was conducted to describe the epidemic intensity, epidemic distribution, and epidemic trend of breast cancer in Shantou, Guangdong Province, from 2006 to 2017, gathered from the Shantou's Medical Security Bureau covers the whole districts of Shantou. ETS and ARIMA models were used to describe the regional distribution, time distribution, and population distribution of breast cancer in Shantou. Moreover, based on the ARIMA model and ETS model, the incidence trend of breast cancer was predicted during 2018–2022. This study included 5,681 breast cancer patients, majority of whom were aged 50–59 years. The male‐to‐female ratio of the breast cancer patients was about 1:107 (the same ratio of the insured population was 1:1). Female patients accounted for 98.61% of the total insured population. The incidence and mortality rates of female breast cancer were 16.42/100,000 and 0.66/100,000, respectively. Based on the ARIMA model or ARIMA and ETS model, a gradually decreasing trend in the incidence of breast cancer is expected in the future. Comparing the performances of the ARIMA model and ETS model, ARIMA (4, 0, 1) (0, 1, 0) model had a lower the root mean squared error and the mean absolute percentage error than ETS (M, N) model. This population‐based retrospective study showed that the high‐risk age for the age‐specific incidence of female breast cancer was 50–55 years. It is recommended that healthcare administration should strengthen program awareness and education regarding breast cancer prevention and control. It is also possible that feasibility of extrapolating the current methodology to other future studies or broader populations in which the cancer registry data are not available.
SARS‐CoV‐2 infection complicated with cold agglutinin disease and myositis
Authors: Aldaghlawi Fadi , Shammah Alaa , Kio Ebenezer 
Published: March 2021

AbstractThis case emphasizes the importance of prompt comprehensive investigation of anemia and myositis in patients infected with SARS‐CoV‐2 and early recognition of uncommon complications that can be associated with SARS‐CoV‐2 infection.
Impact of Heteroatom Speciation on the Activity and Stability of Carbon‐Based Catalysts for Propane Dehydrogenation
Authors: Büchele Simon , Zichittella Guido , Kanatakis Spyridon , Mitchell Sharon , Pérez‐Ramírez Javier 
Published: March 2021

AbstractMetal‐free carbon catalysts represent attractive alternatives to platinum and chromium‐containing systems for the on‐purpose production of propylene, a crucial chemical building block, via non‐oxidative propane dehydrogenation. However, the role of heteroatoms in determining reactivity and stability is poorly understood. Here, the study of a platform of polyaniline‐derived and activated carbons, with distinct porous properties, and heteroatom type, content, and speciation, enables establishing improved structure‐performance relationships. In‐depth characterization reveals that, while several oxygen species potentially catalyze the reaction, carbonyl groups are the main functionality governing the activity. Oxygen loss via propane‐driven water evolution is the main deactivation path. Six‐fold enhanced stability evidenced over carbon catalysts derived from KOH‐post‐treated polyanilines demonstrates the importance of controlling the nanostructure for enhancing longevity.
Calcareous Deposits Formed Under Long‐Term In Situ Cathodic Protection Tests
Authors: Nezgoda Julianne , Leoni Gabriel Batalha , Brasil Simone Louise Delarue Cezar 
Published: March 2021

AbstractThe calcareous deposits formed under commonly applied cathodic protection techniques on coated and uncoated carbon steel samples immersed in Guanabara Bay for 150 days, simulating ships and pipelines, were investigated. Potentials were monitored throughout the analysis, and deposits were examined by visual inspection, optical microscopy, energy‐dispersive X‐ray spectroscopy, and X‐ray diffraction. Beyond calcite, aragonite, and brucite, which are crystals commonly reported in laboratory tests or under confined space conditions, herein, also calcite‐II and calcite‐III were identified as intermediate crystalline structures. Furthermore, it was demonstrated that biological activity also plays an important role, forming calcareous tubular structures within the deposit.
The efficacy of mobile health in alleviating risk factors related to the occurrence and development of coronary heart disease: A systematic review and meta‐analysis
Authors: Xu Yue , Ye Hui , Zhu Yuan , Du Shizheng , Xu Guihua , Wang Qing 
Published: March 2021

AbstractThe association between the efficacy of mobile health and the occurrence and development of coronary heart disease (CHD) is still unclear. Mobile health can alleviate the risk factors for CHD. PubMed, EMbase, Web of Science, The Cochrane Library, CNKI, WanFang, and VIP databases were searched from inception through May 28, 2020. Randomized controlled trials of the effect of mobile health in alleviating the risk factors of CHD's occurrence and development were included. Risks of bias were assessed by two independent reviewers by using the RevMan 5.3, GRADEpro, and RoB2.0 to generate findings. Meta‐analyses were performed to investigate the effects of mobile health on risk factors for CHD. Subgroup analyses were conducted. Sixteen randomized controlled trials, including 3898 patients with CHD, were included. Meta‐analysis results showed that mobile health can reduce BMI (mean difference [MD] = − 1.24, 95% CI = − 2.02 to − 0.45, p < .05), waist circumference (MD = − 4.40, 95% CI = − 4.72 to − 4.08, p < .00001), total cholesterol (TC) level (MD = − 0.43, 95% CI = − 0.64 to − 0.22, p < 0.00001), low‐density lipoprotein cholesterol (LDL‐C) level (MD = − 0.31, 95% CI = − 0.48 to − 0.15, p < .05), diastolic blood pressure (MD = − 2.01, 95% CI = − 3.40 to − 0.623, p < .05), and depression (MD = − 8.32, 95% CI = − 12.83 to − 3.81, p < .05) and increase high‐density lipoprotein cholesterol level (MD = 0.16, 95% CI = 0.01 to 0.32, p < .05) with statistically significant differences. The results of subgroup analyses indicated that the simple mobile health intervention has more remarkable advantages in reducing BMI, TC, LDL‐C, and systolic blood pressure than the complex mobile health intervention. Mobile health can alleviate the risk factors for CHD and has a certain effect on the prevention and recovery of CHD. Simple mobile health has a remarkable advantage. Limited by the quantity and quality of included studies, future research enrolling high‐quality studies should be taken to verify the above conclusions.
Joint time‐slot and power allocation algorithm for data and energy integrated networks supporting internet of things (IoT)
Authors: Zhang Yitian , Yang Kun , Fan Xinyu 
Published: March 2021

SummaryIoT is an essential enabler for smart cities and smart society. However, its deployment at large scale faces a big challenge: battery replacement as most IoT devices are battery‐powered or even battery‐less. In a hostile environment, it is infeasible to replace batteries. Radio frequency (RF)‐enable wireless energy transfer (WET) is a promising technology to solve this problem. Since RF is also used for wireless data communication, a data and energy integrated network (DEIN) is the way forward. Based on the DEIN technology, a time allocation model is designed in this paper to manage the RF energy and uplink data transmission in different time slots. In the IoT scenario, the DEIN's primary service is to collect environmental information such as temperature, humidity, and luminance. Therefore, the uplink data transmission of the battery‐powered/battery‐less IoT nodes deserves more attention. To increase the uplink data transmission in case of consuming less energy in the DEIN system, we propose a joint time slot and power allocation algorithm to minimize the system's consumed energy for transmitting per bit of uplink data. It aims to maximize the efficiency of the DEIN system's energy utilization, which helps to achieve an energy‐efficient DEIN.