bluuebunny/crossref_metadata_2025_split huggingface dataset:
Recording Temperature with Magnetic Supraparticles
Authors: Reichstein Jakob , Müssig Stephan , Bauer Hannes , Wintzheimer Susanne , Mandel Karl 
Published: May 2022

AbstractSmall‐sized temperature indicator additives autonomously record temperature events via a gradual irreversible signal change. This permits, for instance, the indication of possible cold‐chain breaches or failure of electronics but also curing of glues. Thus, information about the materials’ thermal history can be obtained upon signal detection at every point of interest. In this work, maximum‐temperature indicators with magnetic readout based on micrometer‐sized supraparticles (SPs) are introduced. The magnetic signal transduction is, by nature, independent of the materials’ optical properties. This facilitates the determination of valuable temperature information from the inside, that is, the bulk, even of dark and opaque macroscopic objects, which might differ from their surface. Compared to state‐of‐the‐art optical temperature indicators, complementary magnetic readout characteristics ultimately expand their applicability. The conceptualized SPs are hierarchically structured assemblies of environmentally friendly, inexpensive iron oxide nanoparticles and thermoplastic polymer. Irreversible structural changes, induced by polymer softening, yield magnetic interaction changes within and between the hierarchic sub‐structures, which are distinguishable and define the temperature indication mechanism. The fundamental understanding of the SPs’ working principle enables customization of the particles’ working range, response time, and sensitivity, using a toolbox‐like manufacturing approach. The magnetic signal change is detected self‐referenced, fast, and contactless.
Hybrid Nanocomposites of All‐Inorganic Halide Perovskites with Polymers for High‐Performance Field‐Effect‐Transistor‐Based Photodetectors: An Experimental and Simulation Study
Authors: Sulaman Muhammad , Yang Shengyi , Song Yong , Bukhtiar Arfan , Hu Jinming , Zhang Zhenheng , Jiang Yurong , Cui Yanyan , Tang Libin , Zou Bingsuo 
Published: May 2022

AbstractAll‐inorganic halide perovskites have recently emerged as a promising candidate for new‐generation optoelectronics. The device performance of solution‐processed photodetectors critically depends on the surface morphology and film features, however, the behind mechanism is not clear till now. In this paper, a feasible method for surface‐passivating all‐inorganic halide perovskites with poly(3‐hexylthiophene) (P3HT) as the photoactive layer for field‐effect transistor (FET)‐based photodetectors is presented, and the underlying mechanisms to enhance device performance are investigated by experimental and simulating study. As the result, a high photoresponsivity of 469 A W−1 with a specific detectivity of 1.34 × 1014 Jones is obtained under 0.4 mW cm−2 405 nm illumination for FET‐based photodetector Au(S&D)/CsPbBr3:P3HT/PMMA/Al(G). This experimental and simulating study shows that the enhanced‐performance origins from improving the photogenerated charge carriers transportation and suppressing the dark current through the photodetectors.
Highly Sensitive and Topologically Robust Multimode Sensing on Spoof Plasmonic Skyrmions
Authors: Li Xinhua , Liu Liangliang , Zhou Zixiang , Shen Jinrui , Zhang Yaoran , Han Guodong , Li Zhuo 
Published: May 2022

AbstractRecent concept of spoof plasmonic skyrmions has attracted much attention for their topologically robust and multiple equidistance sharp resonances. However, highly‐efficient excitation and its implementations for broadband sensing still remain elusive. Traditional resonant measurements for characterizing dielectric materials in a closed metal cavity are accurate, but are often limited to narrow band of frequencies. Additionally, samples must be carefully prepared and precisely placed in the cavity. In this paper, a topologically robust and ultracompact sensor based on spoof plasmonic skyrmions is developed for characterizing dielectric materials in a wideband with ultrahigh sensitivity. By simply feeding a coaxial probe vertically to the surface center of the skyrmions structure, topologically robust multimode plasmonic skyrmions resonance spectra can be excited and captured with high efficiency. Simulation and experimental results of three skyrmions sensors in different shapes (circle, square, and hexagon) with equal effective length demonstrate that spoof plasmonic skyrmions sensor features are highly sensitive (>4.82%) and extremely accurate (≈99.99%) sensing performance against continuous shape deformations. These results open up an avenue for multiple resonant measurements of dielectric materials in broadband and provide a very versatile platform for the design and fabrication of ultracompact and topologically robust plasmonic sensors.
Developing Y‐Branched Polymer Acceptor with 3D Architecture to Reconcile Between Crystallinity and Miscibility Yielding >15% Efficient All‐Polymer Solar Cells
Authors: Ji Jingjing , Zhu Lei , Xiong Xia , Liu Feng , Liang Ziqi 
Published: May 2022

AbstractIn all‐polymer solar cells (all‐PSCs), there remains such a dilemma that obtains good miscibility and crystallinity simultaneously. Herein a new family of Y‐shape polymer acceptor, namely PYTT is developed, which is copolymerized from Y6 and benzotrithiophene units in three‐way directions. Benefiting from its high‐density end‐chains and extended π‐conjugation thanks to highly‐branched 3D architecture, PYTT displays better organic solubility despite much higher molecular weights, larger crystallinity, and tighter π‐stacking than the linear counterpart—PYT comprising Y6 and thiophene moieties, while showing identical optical absorption yet threefold higher photoluminescence intensity. In PYTT blend film with PM6 polymer donor, the interpenetrating nano‐fibrillar structures are formed with well‐intermixed polymeric domain sizes close to the exciton diffusion length, which is greatly conducive to exciton dissociation and charge transport in device. Consequently, PYTT‐based all‐PSCs exhibit all increased photovoltaic parameters, yielding a decent power conversion efficiency of 15.60%, which is ≈20% enhancement over PYT‐based device, along with low nonradiative loss of 0.221 meV.
Topological Surface‐Dominated Spintronic THz Emission in Topologically Nontrivial Bi1−xSbx Films
Authors: Park Hanbum , Rho Seungwon , Kim Jonghoon , Kim Hyeongmun , Kim Dajung , Kang Chul , Cho Mann‐Ho 
Published: May 2022

AbstractTopological materials have significant potential for spintronic applications owing to their superior spin–charge interconversion. Here, the spin‐to‐charge conversion (SCC) characteristics of epitaxial Bi1−xSbx films is investigated across the topological phase transition by spintronic terahertz (THz) spectroscopy. An unexpected, intense spintronic THz emission is observed in the topologically nontrivial semimetal Bi1−xSbx films, significantly greater than that of Pt and Bi2Se3, which indicates the potential of Bi1−xSbx for spintronic applications. More importantly, the topological surface state (TSS) is observed to significantly contribute to SCC, despite the coexistence of the bulk state, which is possible via a unique ultrafast SCC process, considering the decay process of the spin‐polarized hot electrons. This means that topological material‐based spintronic devices should be fabricated in a manner that fully utilizes the TSS, not the bulk state, to maximize their performance. The results not only provide a clue for identifying the source of the giant spin Hall angle of Bi1−xSbx, but also expand the application potential of topological materials by indicating that the optically induced spin current provides a unique method for focused‐spin injection into the TSS.
A Small Molecule Selected from a DNA‐Encoded Library of Natural Products That Binds to TNF‐α and Attenuates Inflammation In Vivo
Authors: Wang Shuyue , Shi Xiaojie , Li Jie , Huang Qianping , Ji Qun , Yao Ying , Wang Tao , Liu Lili , Ye Min , Deng Yun , Ma Peixiang , Xu Hongtao , Yang Guang 
Published: May 2022

AbstractTumor necrosis factor α (TNF‐α) inhibitors have shown great success in the treatment of autoimmune diseases. However, to date, approved drugs targeting TNF‐α are restricted to biological macromolecules, largely due to the difficulties in using small molecules for pharmaceutical intervention of protein–protein interactions. Herein the power of a natural product‐enriched DNA‐encoded library (nDEL) is exploited to identify small molecules that interfere with the protein–protein interaction between TNF‐α and the cognate receptor. Initially, to select molecules capable of binding to TNF‐α , “late‐stage” DNA modification method is applied to construct an nDEL library consisted of 400 sterically diverse natural products and pharmaceutically active chemicals. Several natural products, including kaempferol, identified not only show direct interaction with TNF‐α, but also lead to the blockage of TNF‐α/TNFR1 interaction. Significantly, kaempferol attenuates the TNF‐α signaling in cells and reduces the 12‐O‐tetradecanoylphorbol‐13‐acetateinduced ear inflammation in mice. Structure‐activity‐relationship analyses demonstrate the importance of substitution groups at C‐3, C‐7, and C‐4' of kaempferol. The nDEL hit, kaempferol, represents a novel chemical scaffold capable of specifically recognizing TNF‐α and blocking its signal transduction, a promising starting point for the development of a small molecule TNF‐α inhibitor for use in the clinical setting.
Light‐Fueled Submarine‐Like Droplet
Authors: Yang Yijing , Chen Rong , Zhu Xun , Ye Dingding , Yang Yang , Li Wei , Li Dongliang , Li Haonan , Liao Qiang 
Published: May 2022

AbstractFlexibly and precisely manipulating 3D droplet transportation is a fundamental challenge for broad implications in diagnostics, drug delivery, bioengineering, etc. Herein, a light method is developed for manipulating a droplet to make it behave like a submarine. This light method enables flexible 3D transportation, stable suspension, and floating of a droplet, which can be freely altered. It is demonstrated that the localized photothermal effect induced thermocapillary flow in the water droplet/oil phase is responsible for energizing and manipulating the droplet. With such remarkable motility, the light‐fueled submarine‐like droplet successfully realizes various functions such as the acid‐base detection, particle capture and transportation, and target crystal collection, dissolution and transportation. It is demonstrated that the light‐fueled submarine‐like droplet shows promising perspective for long‐sought precise droplet manipulation in various applications.
Ruthenium‐Catalyzed Geminal Hydroborative Cyclization of Enynes
Authors: Tan Yun‐Xuan , Li Shijia , Song Lijuan , Zhang Xinhao , Wu Yun‐Dong , Sun Jianwei 
Published: May 2022

AbstractDisclosed here is the first geminal (gem‐)hydroborative cyclization of enynes. Different from known hydroborative cyclizations, this process adds hydrogen and boron to the same position, leading to a new reaction mode. With [Cp*RuCl]4as catalyst, a range ofgem‐hydroborated bicyclic products bearing a cyclopropane unit could be rapidly assembled from simple enyne substrates. Control experiments and density functional theory (DFT) calculations provided important insights into the reaction mechanism. Notably, two major competing pathways may operate with substrate‐dependence. 1,6‐Enynes favor initial oxidative cyclometalation to form a ruthenacyclopentene intermediate prior to engaging hydroborane, while other enynes (e.g., 1,7‐enynes) that lack strong propensity toward cyclization prefer initial alkynegem‐(H,B)‐addition to form an α‐boryl ruthenium carbene followed by intramolecular olefin cyclopropanation. This process also represents the first ruthenium‐catalyzed enyne hydroborative cyclization.
Combinatorial Self‐Assembly of Coordination Cages with Systematically Fine‐Tuned Cavities for Efficient Co‐Encapsulation and Catalysis
Authors: Li Shao‐Chuan , Cai Li‐Xuan , Hong Maochun , Chen Qihui , Sun Qing‐Fu 
Published: May 2022

AbstractControllable arrangement of different ligands in a single assembly will not only bring increased complexity but also offers a new route to fine‐tune the function of the designed architecture. We report here a combinatorial self‐assembly with enPd(NO3)2and three different ligands (L1–3), which gave rise to a family of six palladium‐organic cages (C1‐6) with systematically varied shapes and cavities, including three new heteroleptic (Pd5L12L2,Pd5L12L3,Pd4L2L3), one new homoleptic (Pd4L32) cages, and two known homoleptic (Pd6L14,Pd4L22) cages. Emergent functions due to the fusion of two half cavities on the heteroleptic cages from their parent homoleptic cages have been observed: the heteroleptic cages can form ternary complexes by co‐encapsulation of both aromatic and aliphatic guests, while their homoleptic counterparts can only form binary complexes. Such a forced co‐encapsulation effect endows the heteroleptic cages with enhanced catalytic power for the Knoevenagel condensation.
One‐Step Biocatalytic Synthesis of Sustainable Surfactants by Selective Amide Bond Formation**
Authors: Lubberink Max , Finnigan William , Schnepel Christian , Baldwin Christopher R. , Turner Nicholas J. , Flitsch Sabine L. 
Published: May 2022

AbstractN‐alkanoyl‐N‐methylglucamides (MEGAs) are non‐toxic surfactants widely used as commercial ingredients, but more sustainable syntheses towards these compounds are highly desirable. Here, we present a biocatalytic route towards MEGAs and analogues using a truncated carboxylic acid reductase construct tailored for amide bond formation (CARmm‐A). CARmm‐A is capable of selective amide bond formation without the competing esterification reaction observed in lipase catalysed reactions. A kinase was implemented to regenerate ATP from polyphosphate and by thorough reaction optimisation using design of experiments, the amine concentration needed for amidation was significantly reduced. The wide substrate scope of CARmm‐A was exemplified by the synthesis of 24 commercially relevant amides, including selected examples on a preparative scale. This work establishes acyl‐phosphate mediated chemistry as a highly selective strategy for biocatalytic amide bond formation in the presence of multiple competing alcohol functionalities.
Preparation and performance for CO2 adsorption of large‐scale microporous fiber membrane based on electrostatic spinning technology
Authors: Ran Hongshun , Yan Wenhui , Tan Wenze , Hu Zhixin , Huang Changxin , Yang Shigang , Yuan Zixi , Chen Xueqin , Li Cao , Xu Ziqiang , Jiang Bingbing 
Published: May 2022

AbstractAlthough nano‐porous materials are widely used, they are still difficult to prepare in large size and expand flexibly. In this work, a new method for the synthesis of porous materials is proposed. First, the block polymers were prepared by atom transfer radical polymerization. Through electrostatic spinning, the fiber films were fabricated, then the fibers were modified by surface post‐treatment and related Friedel–Crafts alkylation reaction. The pore and CO2 adsorption properties of the porous fiber films are characterized by nitrogen adsorption–desorption isotherm. In order to improve the pore properties and CO2 adsorption properties of thin films, the additives and pretreatment process are optimized. The maximum specific surface area of the porous fiber membrane is determined to be 640 m2/g, and the CO2 adsorption capacity is high up to 36.3 wt.% (8.68 mmol/g). Moreover, the porous fiber membrane derived from this strategy is superior in the aspects of large size, convenient adjustment and simple processing, which makes up for the drawbacks of traditional porous materials. The fiber membrane obtained by this strategy has high productivity, and the fiber membrane is easy to be postprocessed, which can be integrated into functional devices, and is widely used.
Reconstructing the historical distribution and local extinction of the giant otter Pteronura brasiliensis in the Atlantic Forest of South America
Authors: Garbino Guilherme S. T. , Siciliano Salvatore , Nascimento Fabio Oliveira do , Melo Fabiano Rodrigues de , Feio Renato Neves , Lessa Gisele , Emin‐Lima Renata , Costa Alexandra F. , Gonçalves da Silva Lucas 
Published: May 2022

Abstract

Quantifying the distribution of an endangered species in space and time is crucial for planning management and conservation actions. The giant otter (Pteronura brasiliensis) is an endangered South American mammal that is considered to be extinct in the Atlantic Forest biome.
Historical records of P. brasiliensis were used to reconstruct its original distribution in the Atlantic Forest biome. Based on the historical records and ecological niche models, the original distribution and amount of habitat area lost for the species were estimated. The potential impacts of dams in planning reintroductions for the species were also assessed.
Twenty‐six records of P. brasiliensis made between 1769 and 1999 were found. Most of the records are concentrated in the Paraná River basin. Only six records were based on voucher specimens and photographs. Areas in the southern (Paraná state, Brazil) and central (Bahia and Minas Gerais states, Brazil) Atlantic Forest were recovered as highly suitable for the species, even after considering the negative impact of dams.
The ecological niche models suggested that P. brasiliensis formerly occupied an area of 909,257 km2 in the Atlantic Forest. The forested rivers, along the upper Paraná basin, in northern Argentina and southern Brazil were the last refugia of the species. Pelt trade was probably a major factor in the species' disappearance, which is evidenced by the fact that Brazilian stakeholders, in Atlantic Forest sites, restricted giant otter hunting as early as 1948.
The results show that historical records and ecological niche models can be effectively combined and may guide in‐situ conservation actions by identifying potential areas for reintroductions.
Erfahrungen beim Bau von Verbundrahmen
Authors: Friese Friso , Gebert Gregor 
Published: May 2022

AbstractVerbundrahmen ermöglichen ein mittelstützenfreies Überspannen unserer Bundesfernstraßen und erlauben durch einen hohen Vorfertigungsgrad eine Herstellung mit geringen Eingriffen in den Verkehr. Dies erhöht die Verkehrssicherheit dauerhaft durch den Wegfall des Anprallrisikos und gute Sichtbeziehungen und reduziert bauzeitliche Gefahren. Aus diesen Gründen haben sich Verbundrahmen in den letzten 20 Jahren als Standardlösung für Überführungsbauwerke etabliert. Auch im Zuständigkeitsbereich der DEGES wurde eine Vielzahl solcher Bauwerke errichtet. Trotz äußerlich ähnlichem Erscheinungsbild werden diese Bauwerke in Bezug auf den gewählten Querschnitt, die Herstellung und spezifische konstruktive Details sehr unterschiedlich ausgebildet. Um einen Überblick über die verschiedenen Konstruktionsarten und deren Vorteile zu erhalten, wurden die in den letzten fünf Jahren bei der DEGES errichteten Verbundrahmen systematisch ausgewertet. Im folgenden Bericht werden die Ergebnisse dieser Auswertung zusammengefasst und Empfehlungen für künftige Projekte abgeleitet.
Clinical characteristics, prognostic factors, and survival trends in esophageal neuroendocrine carcinomas: A population‐based study
Authors: Chen Chuyan , Hu Haiyi , Zheng Zhibo , Yang Yi , Chen Wei , Qiao Xinwei , Li Peng , Zhang Shutian 
Published: May 2022

AbstractBackgroundEsophageal neuroendocrine carcinoma (ENEC) is an extremely rare type of malignancy. Clinical data of ENEC are limited to case reports and case series. More information is needed on its clinical feature, management, and prognosis.MethodsThis study collected information of ENEC patients diagnosed pathologically from 2010 to 2018. Data including demographic information, clinical features, and survival trends were obtained from the Surveillance, Epidemiology, and End Results (SEER) database. Statistical analyses were performed with STATA/SE 15.1, SPSS 25.0, and GraphPad Prism 8.ResultsA total of 283 ENEC patients were included in this study. The small‐cell and large‐cell subtypes of ENEC possess similar clinical features. The lower third of the esophagus (58%) was the most common location of ENEC. At the time of diagnosis, most ENEC patients were AJCC 7th stage IV (48.1%). Metastasis occurred in more than half of the ENEC patients (53.4%), and the most common metastatic site was the liver (37.1%). Compared with poorly differentiated esophageal squamous cell carcinoma (ESCC), another aggressive malignancy of the esophagus sometimes confused with ENEC because of similar histological features, our study showed differences in tumor location and metastatic rate, but similar poor survival rates. Multivariate survival analysis showed that ENEC located at the middle third of esophagus (p = 0.013), “Brain metastasis” (p = 0.019), and “Liver metastasis” (p < 0.001) were independent predictors of worse outcomes. “Surgery” (p = 0.003), and “Chemotherapy” (p < 0.001) were associated with better survival.ConclusionA significant proportion of patients with newly diagnosed ENEC presented with metastatic disease. Predictors of poor survival included tumor location, brain metastasis, and liver metastasis. ENEC and poorly differentiated ESCC share certain histological features, but differ in tumor location and metastatic rate. Yet, no standard treatment strategy has been established, but surgery and chemotherapy were related to better outcomes.
Listeria endocarditis and spondylodiscitis: A case report and review of the literature
Authors: Randrianarisoa Rova Malala Fandresena , Ramanandafy Hervéat , Mania Alexandre , Benelhadj Assia Djelloul , Clément Mélissa , Sabbagh Lara , Vernet Pierre , Monjanel Hélène , Trouillier Sébastien 
Published: May 2022

AbstractA 75‐year‐old man with an aortic bioprosthesis was admitted with polyarthritis in a non‐febrile setting. Blood cultures were positive for Listeria monocytogenes. The diagnosis of Listeria endocarditis and spondylodiscitis was evoked. These are two unusual forms of listeriosis. The evolution was favorable after antibiotic therapy.
Chiral separation of dipeptides on Cinchona‐based zwitterionic chiral stationary phases under buffer‐free reversed‐phase conditions
Authors: Asnin Leonid , Herciková Jana , Lindner Wolfgang , Klimova Yana , Ziganshina Daria , Reshetova Elena , Kohout Michal 
Published: May 2022

AbstractChiral zwitterion ion exchangers represent efficient chiral stationary phases for stereoselective resolution of various analytes including chiral acids, bases, and zwitterions. In this contribution, we have focused on utilization of chiral zwitterionic sorbents, denoted as ZWIX (+A) and ZWIX (−A). These are analogical chiral systems to commercially available columns, Chiralpak ZWIX (+) and Chiralpak ZWIX (−), which are usually operated with buffered mobile phases. In this contribution, we have studied the enantiorecognition power of the ZWIX (+A) and ZWIX (−A) columns on a series of dipeptides operated under buffer‐free reversed‐phase conditions. Retention characteristics of zwitterionic dipeptides are discussed using an electrostatically driven adsorption model, which provides a good fit with both monotonous and U‐shaped curves.