bluuebunny/crossref_metadata_2025_split huggingface dataset:
Supersaturation‐Controlled Growth of Monolithically Integrated Lead‐Free Halide Perovskite Single‐Crystalline Thin Film for High‐Sensitivity Photodetectors
Authors: Li Ziqing , Liu Xinya , Zuo Chaolei , Yang Wei , Fang Xiaosheng 
Published: August 2021

AbstractMonolithical integration of the promising optoelectronic material with mature and inexpensive silicon circuitry contributes to simplifying device geometry, enhancing performance, and expanding new functionalities. Herein, a lead‐free halide perovskite Cs3Bi2I9 single‐crystalline thin film (SCTF), with thickness ranging from 900 nm to 4.1 µm and aspect ratio up to 1666, is directly integrated on various substrates including Si wafer, through a facile and low‐temperature solution‐processing method. The growth kinetics of the lead‐free halide perovskite SCTF are elucidated by in situ observation, and the solution supersaturation is controlled to reduce the inverse‐temperature crystallization nucleation density and elongate the evaporation growth. The excellent lattice match and band alignment between Si(111) and Cs3Bi2I9(001) facets promote photogenerated charge dissociation and extraction, resulting in boosting the photoelectric sensitivity by 10–200 times compared with photodetectors based on other substrates. More importantly, this silicon‐compatible perovskite SCTF photodetector exhibits a high switching ratio of 3000 and a fast response of 1.5 µs, which are higher than most reported state‐of‐the‐art lead‐free halide perovskite photodetectors. This work not only gives an in‐depth understanding of the perovskite precursor solution chemistry, but also demonstrates the great potential of monolithical integration of lead‐free halide perovskite SCTF with a silicon wafer for high‐performance photodetectors.
Synthesis of Functionalized Cyclobutenes and Spirocycles via Asymmetric P(III)/P(V) Redox Catalysis
Authors: Lorton Charlotte , Roblin Antoine , Retailleau Pascal , Voituriez Arnaud 
Published: August 2021

AbstractAn enantioselective phosphine‐catalyzed transformation has been developed for the synthesis of chiral cyclobutene triesters and fluorinated spirocyclic compounds. The strategy involved a P(III)/P(V) redox cycling process, via in situ reduction of phosphine oxide with phenylsilane. This catalytic methodology has enabled the enantioselective synthesis of functionalized cyclobutenes (24 examples, up to 94% ee). On the occasion of the extension of this study to α‐ketoester indenone substrates, a surprising reactivity has been discovered for the synthesis of spiro‐indenone products.magnified image
MoS2 Homojunctions Transistors Enabled by Dimension Tailoring Strategy
Authors: Duan Xinpei , Niu Wencheng , Lin Jun , Liu Chang , Wan Da , Zhang Mingliang , Li Guoli , Liu Xingqiang , Liu Yuan , Fan Zhiyong , Liao Lei 
Published: August 2021

Abstract2D semiconductors present tunable property with the physical dimension. Herein, an efficient strategy to modulate the band structure of ultrathin channel by dimension tailoring of the 2D materials is reported. In order to verify the practicability of this strategy, bulk‐MoS2/MoS2 nanoribbon (NR) homojunctions are constructed with a rectification ratio approaching up to 104 and an ideality factor of 1.77 which readily enable the fabrication of MoS2‐based metal‐semiconductor field‐effect transistors, and the bulk‐MoS2 and the MoS2 NR serve as gate and channel, respectively. The fabricated devices exhibit robust performance, such as high saturation current of 46 µA·µm−1 and high on–off ratio over 5 × 105 at room temperature. The output current presents a high value of 140 µA·µm−1 at 77 K, then decreases with temperature. Moreover, the fabricated inverter provides a voltage gain of 15.4 and a near‐ideal noise margin of 83% of supply voltage. This strategy indicates an alternative way to construct transistors based on the derivative of the same 2D material.
Planting method and seeding rate effect on whole and partitioned soybean yield
Authors: Mourtzinis Spyros , Roth Adam , Gaska John , Conley Shawn P. 
Published: August 2021

AbstractSoybean [Glycine max (L.) Merr.] seeding rate is one of the most important management decisions. Although seeding rate effect on yield is one of the most examined management practices, its interactive effect with seeding method is often ignored. Two field trials were conducted in Arlington, WI, between 2019 and 2020. In the first trial, the interactive effect of seeding rate with seeding method (precision vs. random) and two cultivars was examined. Precision method used a vacuum seed meter and soybean seed plate, whereas the random method used a cone seed distribution system. The second trial was hand planted to mimic precision planting (exact seeding rates and within row spacings), and the effect of seeding rate on total and partitioned (branch and stem) soybean yield was assessed. The effect of seeding rate on yield varied due to seeding method and cultivar. Precision seeding increased yield for the lowest seeding rate (99,000 seeds ha–1) and was associated with increased canopy closure and more uniform within‐row plant‐to‐plant spacing compared with the random seeding method. When soybean was hand planted (precision planting), total yield was greater only in the highest seeding rate. In the lowest rates, branch‐ and stem‐derived yields were similar. Overall results show that precision planting can mitigate yield loss at suboptimal seeding rates. Results from these studies reveal the complexity of seeding rate optimization for maximizing soybean yield and resulting profit and highlight the need for farm‐specific economic analysis for different management‐related costs and soybean price scenarios.
Enhanced propylene/propane separation in facilitated transport membranes containing multisilver complex
Authors: Su Yafei , Cong Shenzhen , Shan Meixia , Zhang Yatao 
Published: August 2021

AbstractFacilitated transport membrane containing a zero complex Ag4tz4and 6FDA‐TMPDA was fabricated via a solution‐casting method and their separation performance toward C3H6/C3H8was investigated. Ag4tz4complexes were well dispersed in the polymeric matrix owing to the weak hydrogen bond between Ag4tz4and 6FDA‐TMPDA which can efficiently improve their interface compatibility. The reversible π complexation between C3H6and Ag+facilitates the C3H6transport in membranes, which is beneficial to achieve high C3H6/C3H8permselectivity according to the density functional theory calculation. Remarkably, the best separation performance was achieved by the 10 wt% Ag4tz4membrane, for which the C3H6permeability is 22 Barrer and the C3H6/C3H8selectivity reaches up to 43, surpassing the Robeson upper bound. In addition, the membranes also exhibit great long‐term stability (>120 h). The excellent separation performance together with the long‐term stability render the membrane to be an interesting candidate for C3H6/C3H8separation.
Drop sizes and population balance model for a Karr column
Authors: Zhang Jiyizhe , Li Wen , Mumford Kathryn , Fei Weiyang , Stevens Geoffrey , Wang Yundong 
Published: August 2021

AbstractDrop sizes were investigated and measured in a Karr column. A stagewise population balance model was presented considering drop breakage and coalescence. The same breakage mechanisms observed in the single drop study were also found in column. The breakage probability model was selected by comparing the model from single drop study and the widely used models. Model parameters were calculated based on a two‐step optimization method. The results showed that the drop sizes decreased with an increase in reciprocating intensity, but changed slightly with phase velocities. The predicted drop sizes were compared to the experimental data in previous studies and good agreement was achieved. Finally, the population balance model along with some existing correlations were compared with the experimental data. It was found that the population balance model and correlations with the low agitation term provided better predictions of drop sizes in the Karr column. Transport Phenomena and Fluid Mechanics: Karr column, drop size distribution, population balance model, parameter optimization.
Ionic Functionalization of Multivariate Covalent Organic Frameworks to Achieve an Exceptionally High Iodine‐Capture Capacity
Authors: Xie Yaqiang , Pan Tingting , Lei Qiong , Chen Cailing , Dong Xinglong , Yuan Youyou , Shen Jie , Cai Yichen , Zhou Chunhui , Pinnau Ingo , Han Yu 
Published: August 2021

AbstractAdsorption‐based iodine (I2) capture has great potential for the treatment of radioactive nuclear waste. In this study, we apply a “multivariate” synthetic strategy to construct ionic covalent organic frameworks (iCOFs) with a large surface area, high pore volume, and abundant binding sites for I2 capture. The optimized material iCOF‐AB‐50 exhibits a static I2 uptake capacity of 10.21 g g−1 at 75 °C and a dynamic uptake capacity of 2.79 g g−1 at ≈400 ppm I2 and 25 °C, far exceeding the performances of previously reported adsorbents under similar conditions. iCOF‐AB‐50 also exhibits fast adsorption kinetics, good moisture tolerance, and full reusability. The promoting effect of ionic groups on I2 adsorption has been elucidated by experimentally identifying the iodine species adsorbed at different sites and calculating their binding energies. This work demonstrates the essential role of balancing the textural properties and binding sites of the adsorbent in achieving a high I2 capture performance.
A Molecular‐Splicing Strategy for Constructing a Near‐Infrared Fluorescent Probe for UDP‐Glucuronosyltransferase 1A1
Authors: Tian Xiangge , Liu Tao , Ma Yinhua , Gao Jian , Feng Lei , Cui Jingnan , James Tony D. , Ma Xiaochi 
Published: August 2021

AbstractUDP‐glucuronosyltransferase 1A1 (UGT1A1) is a vital metabolic enzyme responsible for the clearance of endogenous substances and drugs. Hitherto, the development of fluorescent probes for UGTs was severely restricted due to the poor isoform selectivity and on–off or blue‐shifted fluorescence response. Herein, we established a novel “molecular‐splicing” strategy to construct a highly selective near‐infrared (NIR) fluorescent probe,HHC, for UGT1A1, which exhibited a NIR signal at 720 nm after UGT1A1 metabolism.HHCwas then successfully used for the real‐time imaging of endogenous UGT1A1 in living cells and animals and to monitor the bile excretion function. In summary, an isoform‐specific NIR fluorescent probe has been developed for monitoring UGT1A1 activity in living systems, high‐throughput screening of novel UGT1A1 inhibitors and visual evaluation of bile excretion function.
Ship‐in‐bottle preparation of multi‐SO3H functionalized ionic liquid@MIL‐100(Fe) for acid‐catalyzed ring‐opening of epoxides
Authors: Mortazavi Saeideh‐Sadat , Masteri‐Farahani Majid , Abbasi Alireza 
Published: August 2021

AbstractThe fact that the homogeneous acid catalysts are usually separated difficulty than heterogeneous catalysts from the reaction media, the opportunity to combine the advantages of both homogeneous and heterogeneous catalytic systems by immobilizing ILs within the pores of a porous solid support host is an alternative method. In this research, a multi‐SO3H functionalized ionic liquid derived from hexamethylenetetramine (HMTA) and 1,3‐propane sultone was entrapped inside the pores of MIL‐100(Fe) through the ship‐in‐bottle method and utilized for heterogeneous acid‐catalyzed ring‐opening of epoxides under solvent‐free conditions. The physicochemical properties of prepared catalyst were fully elucidated by various methods. FT‐IR spectroscopy and elemental analysis approved the successful incorporation of modified groups within the MIL‐100(Fe) cavities. The concentration of acid sites was measured via the acid–base titration which exhibited the 0.9 mmol/g H+ in the catalyst structure. Also, thermogravimetric analysis (TGA) profile showed the loosing of modified groups at 300–600°C. Moreover, X‐ray diffraction (XRD) analysis showed that the MIL‐100(Fe) structure was retained after modification and nitrogen adsorption–desorption analysis (BET method) manifested the decrease in surface area caused by incorporation of ionic liquid. The fabricated catalyst exhibited high catalytic efficiency in methanolysis of styrene oxide (99% conversion in 3 h) under ambient conditions and used without a substantial drop in product yield in further rounds.
Novel acetylene‐terminated thermosetting polyisoimides with excellent solubility and performed as efficient heat shields composites
Authors: Xu Qinging , Shi Xincui , Li Yunhui , Zeng Fanming , Deng Pengyang , Su Zhongmin 
Published: August 2021

AbstractThe acetylene‐terminated polyisoimide oligomers introducing 2,2′‐bis (trifluoromethyl)benzidine (TFMB) or 3,4′‐oxydiphthalic anhydride (3,4′‐ODA) as the diamine were synthesized, and short quartz fiber reinforced polyisoimide composites were prepared. The structure, processability, and thermal properties of polyisoimide oligomers were characterized. The mechanical properties and ablation protection performances of the composites were tested. The effects of TFMB on the processability and thermal properties of polyisoimides were studied. The application properties of short quartz fiber reinforced polyisoimide composites as thermal protection materials were evaluated by coal gas/oxygen ablation test system. These results showed that the introduction of TFMB into the polyisoimide structure can improve its solubility and heat resistance, as well as the ablation protection performances of the composites. The above results showed its potential application in the field of thermal protection materials. This makes it possible for polyisoimide composites to be used in the field of ablation protection.
Spawning areas and migration patterns in the early life history of Squalius cephalus (Linnaeus, 1758): Use of otolith microchemistry for conservation and sustainable management
Authors: Bounket Bernadette , Tabouret Hélène , Gibert Pierre , Bareille Gilles , Pecheyran Christophe , Carrel Georges , Argillier Christine , Morat Fabien 
Published: August 2021

Abstract

In the context of the River Rhône restoration programme, the objective of this study was to assess the dispersal and population connectivity of the European chub, Squalius cephalus (Linnaeus, 1758) in a section of the natural, free‐flowing part of the lower River Rhône.
The elemental water signatures for Sr:Ca and Ba:Ca were measured at seven stations within the river section, including its tributaries and backwaters, to determine whether they could be differentiated by microchemistry. From August to October the signatures differed among three sectors of the study reach: the Rhône; the Ardèche; and the backwaters.
The elemental signatures of the otoliths of 178 young‐of‐the‐year (YOY) chub from the stations were measured to assess spawning areas and identify early migratory life histories. Analyses of otolith microchemistry identified the natal origin of 95% of the fish. Sr:Ca signatures of otoliths showed early downstream migration for 30.4% of the YOY chub; however, 70% of the fish recruited relatively close to their spawning origin suggesting a potential inshore retention of fish.
The results showed (i) a non‐negligible contribution of the tributaries and backwaters in the recruitment of fish into the main channel; and (ii) the ability of chub to migrate over several kilometres during their first few months of life.
This study shows that the combination of water and otolith microchemistry analyses of fish growth increases the understanding of fish life history. Moreover, the study revealed that half of the YOY fish from this river section came from the tributaries and the other half came from reproduction in the River Rhône (despite its high anthropization).
These methods offer promising future applications of otolith microchemistry for river management in the context of ecological rehabilitation, especially to assess the effectiveness of measures applied in the restoration of floodplain connectivity for riverine fish population conservation.
Scalp acupuncture enhances local brain regions functional activities and functional connections between cerebral hemispheres in acute ischemic stroke patients
Authors: Liu Huacong , Jiang Yijing , Wang Ningning , Yan Han , Chen Lanpin , Gao Jingchun , Zhang Jiping , Qu Shanshan , Liu Songyan , Liu Gang , Huang Yong , Chen Junqi 
Published: August 2021

AbstractThis study aimed to explore the changes in functional connections between cerebral hemispheres and local brain regions functional activities in patients with acute ischemic stroke (AIS) treated with International Standard Scalp Acupuncture (ISSA). Thirty patients with middle cerebral artery AIS in the dominant hemisphere were selected and randomly divided into two groups such as the control group and the scalp acupuncture group, with 15 patients in each group. Patients in the control group were treated with conventional Western medicine, while patients in the scalp acupuncture group received ISSA (acupuncture at the parietal midline [MS5], acupuncture at the left anterior parietotemporal oblique line [MS6] and acupuncture at the left posterior parietotemporal oblique line [MS7]) for one course of treatment. All patients were evaluated for treatment efficacy and received whole brain resting state functional magnetic resonance imaging (Rs‐fMRI) scan before and after treatment. The observational indicators included: (a) the National Institutes of Health Stroke Scale (NIHSS) scores and the simplified Fugl‐Meyer Assessment (SFMA) scores; (b) analyses of the amplitude of low‐frequency fluctuation (ALFF), regional homogeneity (ReHo) and voxel‐mirrored homotopic connectivity (VMHC). The results showed a significant difference in the NIHSS scores before and after treatment in the scalp acupuncture group compared with the control group (p < .05), indicating that patients improved better after scalp acupuncture treatment. Compared with the control group, the VMHC, ALFF and ReHo values in the scalp acupuncture group increased after treatment. The VMHC values increased in the brain regions dominated by bilateral BA6 and BA8; the ALFF values increased in the left BA39 and the adjacent superior temporal gyrus and middle temporal gyrus; and the ReHo values increased in the brain regions extending from left middle temporal gyrus (including BA21) to BA37, and the brain regions extending from the left BA40 and angular gyrus to BA7. The present study indicated that scalp acupuncture can specifically strengthen the functional activities of the brain regions related to sensory integration, language processing and motor coordination in the middle aged and elderly patients with AIS of the dominant cerebral hemisphere, and can strengthen bilateral frontal lobe motor control. This study may provide a scientific basis for the clinical application of ISSA treatment in patients with AIS, and may also provide a preliminary research basis for further animal experiments.
Open research data repositories: Practices, norms, and metadata for sharing images
Authors: Hansson Karin , Dahlgren Anna 
Published: August 2021

AbstractOpen research data repositories are promoted as one of the cornerstones in the open research paradigm, promoting collaboration, interoperability, and large‐scale sharing and reuse. There is, however, a lack of research investigating what these sharing platforms actually share and a more critical interface analysis of the norms and practices embedded in this datafication of academic practice is needed. This article takes image data sharing in the humanities as a case study for investigating the possibilities and constraints in 5 open research data repositories. By analyzing the visual and textual content of the interface along with the technical means for metadata, the study shows how the platforms are differentiated in terms of signifiers of research paradigms, but that beneath the rhetoric of the interface, they are designed in a similar way, which does not correspond well with the image researchers' need for detailed metadata. Combined with the problem of copyright limitations, these data‐sharing tools are simply not sophisticated enough when it comes to sharing and reusing images. The result also corresponds with previous research showing that these tools are used not so much for sharing research data, but more for promoting researcher personas.
Memory of Chirality in the Asymmetric Synthesis of Piperidines with Vicinal Stereocenters by Intramolecular Sn2′ Reaction
Authors: Park Seungbae , Lee Seokwoo , Kim Jae Hyun , Choi Won Jun , Kim Sanghee 
Published: August 2021

AbstractIntramolecular Sn2′ cyclization of α‐amino ester enolates provided piperidine derivatives with vicinal quaternary‐tertiary stereocenters with excellent diastereo‐ and enantioselectivity via memory of chirality and the Thorpe‐Ingold effect. DFT calculations provided a mechanistic rationale for the increase in chirality preservation via the Thorpe‐Ingold effect. This new method has the potential to be integrated into concise asymmetric synthesis of bioactive molecules containing multisubstituted piperidine moieties.
Extracorporeal Membrane Oxygenation with rituximab‐combined chemotherapy in AIDS‐associated primary cardiac lymphoma: A case report
Authors: Fuseya Hoyuri , Yoshimura Takuro , Tsutsumi Minako , Nakaya Yosuke , Horiuchi Mirei , Yoshida Masahiro , Hayashi Yoshiki , Nakao Takafumi , Inoue Takeshi , Yamane Takahisa 
Published: August 2021

AbstractAlthough effective combination of antiretroviral medications is being developed, the incidence of non‐Hodgkin lymphoma (NHL) with human immunodeficiency/acquired immunodeficiency syndrome (HIV/AIDS) still remains significantly higher than that in individuals without infection. Primary cardiac lymphoma (PCL) is an NHL that involves the heart and/or the pericardium. PCL is very rare and often causes serious complications, which can be a diagnostic challenge. To our knowledge, no study has reported the measurement of rituximab concentration under venoarterial extracorporeal membrane oxygenation (VA‐ECMO). Herein, we report the case of a 54‐year‐old male patient with AIDS‐associated primary cardiac NHL who developed right ventricular outflow tract obstruction. The patient experienced fatigue and dyspnea on exertion. Contrast‐enhanced computed tomography showed a bulky tumor mass in his right atrium and ventricle, and an echocardiogram revealed severe hypokinesis of his heart and poor cardiac output. A biopsy was performed, and immunohistochemistry revealed diffuse large B‐cell lymphoma. Therefore, he was treated with rituximab‐combined chemotherapy under VA‐ECMO. Blood levels of rituximab were measured during chemotherapy with VA‐ECMO. Thereafter, he was temporarily discharged from the hospital. This clinical case suggests that VA‐ECMO and rituximab‐combined chemotherapy are useful in rescuing patients with severe cardiopulmonary failure due to AIDS‐associated PCL.
Compression Mechanism in Multilayered Filter Cakes
Authors: Hennemann Martin , Fattahi Ehsan , Gastl Martina , Becker Thomas 
Published: August 2021

AbstractSedimentation combined with a broad particle size distribution in the suspension results in multilayered filter cakes, where a fine particle layer forms on top of a compressible bottom layer. Owing to their high resistance, the fine particles act as a stiff layer and compress the bottom layer during filtration. This was investigated using a model cake composed of a compressible bottom layer and an artificial fine layer. Compression was determined via a volumetric porosity measurement. A reduction in porosity due to compression increased the filter cake resistance significantly. The use of different types of fine particles demonstrated that if the top layer resistance is higher than that of the bottom, a differential pressure results that pulls the top layer down and compresses the bottom layer.