bluuebunny/crossref_metadata_2025_split huggingface dataset:
Contribuições de práticas sustentáveis para a consolidação do turismo sustentável no Brasil
Authors: Garlet Valéria , Grellmann Camila Pascotini , Madruga Lucia Rejane da Rosa Gama 
Published: August 2021

Purpose – This research aims to analyze sustainable practices of 421 tourists, through a quantitative study (survey method).Design/methodology/approach – The questionnaire identified the choices and attitudes related to transportation, lodging, environmental impact, social responsibility, tours, airfare purchase, shopping, food, local culture and nature.Findings – The results showed that most respondents say they practice sustainability when traveling as tourists and try to assist other tourists by teaching and transmitting the principles of minimum impact whenever there is an opportunity. However, some research results are worrisome: only 19.72% of the respondents plan their trips thinking about the environmental impact and only 17.58% verify if the lodging environment adopts sustainability practices. In addition, 46.56% were indifferent about buying in stores and restaurants with sustainable practices.Originality/value (mandatory) – Thus, there is still much to evolve regarding better choices and attitudes. With the development of sustainable practices, it will be possible to achieve favorable tourism for all.
Kodachrome : la couleur de la nostalgie
Authors: Habib André 
Published: August 2021

En 1973, Paul Simon chantait : « Kodachrome/They give us those nice bright colors/They give us the greens of summers/Makes you think all the world’s a sunny day. » Le premier titre de cette chanson, Kodachrome, était Going Home. Qu’est-ce qui explique cette affinité entre le motif du « retour à la maison » et le nom de la célèbre pellicule commercialisée par Kodak en 1935 ? Quel est le sentiment de nostalgie, de familiaritépoignante, que ce mot évoque et qui semble indissociable des qualités chromatiques particulières du film, ses couleurs vives et saturées ? Cet article, construit comme une mosaïque ou un montage de fragments juxtaposés, puise tant dans l’histoire de la pellicule que dans des souvenirs personnels pour faire un portrait de ses usages et de ses imaginaires, passés et contemporains. Il cherche à faire apparaître les différentes déclinaisons de ce mot, Kodachrome, et les multiples facettes de la nostalgie qu’il mobilise.
Quand les sens prennent vie… Des liens possibles entre cinéma et histoire du décorum
Authors: Perrin Khelissa Anne 
Published: August 2021

La question du décor historique au cinéma est souvent abordée sous l’angle de la vraisemblance et de l’authenticité : il s’agit de savoir si la décoration intérieure et l’ameublement sont conformes aux styles et aux usages du temps narré, si les objets que manipulent les personnages, comme leurs costumes et leurs attitudes, respectent une « réalité historique », s’ils témoignent autant de faits que d’ambiances. C’est un autre angle que l’autrice propose dans cet article, celui du rôle du cinéma dans la compréhension de la culture matérielle d’antan. En effet, en creusant les logiques qui sourdent aux processus du décor d’Ancien Régime, il apparaît que l’art cinématographique, par ses multiples potentialités visuelles, narratives et émotives, approche au plus près de la relation que les hommes et femmes entretenaient jadis avec leurs objets décoratifs. À partir d’une sélection de films qui puisent dans des classiques du cinéma français, italien et américain, l’autrice suggère des pistes de réflexion et un éclairage pour accompagner la rencontre entre chercheurs en études cinématographiques et en histoire de l’art.
A significant range extension for the Western Soil-Crevice Skink Proablepharus reginae (Glauert 1960) and an updated reptile species list of Cape Range, Western Australia
Authors: Beranek Chad , Mahony Stephen , Scott Shawn 
Published: August 2021

ABSTRACT
We describe a 226 km range extension for the known distribution of the Western Soil-Crevice Skink Proablepharus reginae in Western Australia. This record from Cape Range National Park is the first for this species on the North West Cape and within the Cape Range IBRA sub-region and marks the most westerly record of P. reginae for mainland Australia. This finding raises the terrestrial reptile species richness for the Cape Range peninsula to 90. Previous surveys in this area failed to detect P. reginae, which demonstrates the value of repeated surveys in documenting species richness in remote locations. Furthermore, we provide morphological and ecological data and discuss this record in the contexts of geographic variation and the high number of isolated reptile populations and endemism seen on the Cape Range peninsula.
Clinical potential of circulating free DNA and circulating tumour cells in patients with metastatic non‐small‐cell lung cancer treated with pembrolizumab
Authors: Mondelo‐Macía Patricia , García‐González Jorge , León‐Mateos Luis , Anido Urbano , Aguín Santiago , Abdulkader Ihab , Sánchez‐Ares María , Abalo Alicia , Rodríguez‐Casanova Aitor , Díaz‐Lagares Ángel , Lago‐Lestón Ramón Manuel , Muinelo‐Romay Laura , López‐López Rafael , Díaz‐Peña Roberto 
Published: August 2021

Immune checkpoint inhibitors, such as pembrolizumab, are revolutionizing therapeutic strategies for different cancer types, including non‐small‐cell lung cancer (NSCLC). However, only a subset of patients benefits from this therapy, and new biomarkers are needed to select better candidates. In this study, we explored the value of liquid biopsy analyses, including circulating free DNA (cfDNA) and circulating tumour cells (CTCs), as a prognostic or predictive tool to guide pembrolizumab therapy. For this purpose, a total of 109 blood samples were collected from 50 patients with advanced NSCLC prior to treatment onset and at 6 and 12 weeks after the initiation of pembrolizumab. Plasma cfDNA was measured using hTERT quantitative PCR assay. The CTC levels at baseline were also analysed using two enrichment technologies (CellSearch® and Parsortix systems) to evaluate the efficacy of both approaches at detecting the presence of programmed cell death ligand 1 on CTCs. Notably, patients with high baseline hTERT cfDNA levels had significantly shorter progression‐free survival (PFS) and overall survival (OS) than those with low baseline levels. Moreover, patients with unfavourable changes in the hTERT cfDNA levels from baseline to 12 weeks showed a higher risk of disease progression. Additionally, patients in whom CTCs were detected using the CellSearch® system had significantly shorter PFS and OS than patients who had no CTCs. Finally, multivariate regression analyses confirmed the value of the combination of CTCs and cfDNA levels as an early independent predictor of disease progression, identifying a subgroup of patients who were negative for CTCs, who presented low levels of cfDNA and who particularly benefited from the treatment.
Organic Single Crystal Patterning Method for Micrometric Photosensors
Authors: Serra João , Sequeira Sara , Domingos Ismael , Paracana Ana , Maçôas Ermelinda , Melo Luís V. , Pires Bernardo J. , Cardoso Susana , Leitao Diana C. , Alves Helena 
Published: August 2021

AbstractLight detection technologies are of interest due to their applications in energy conversion and optical communications. Single‐crystal organic semiconductors, such as rubrene, present high detectivities and charge carrier mobility, making them attractive for light‐sensing applications. Growth of high crystallinity organic crystals is achieved using vapor processes, forming crystals of arbitrary shapes and orientations and requiring posterior patterning processes. However, patterning the organic semiconductors using industry‐standard microfabrication techniques is not straightforward, as these often cause irreversible damage to the crystals. Here the fabrication of patterned micrometric rubrene photosensors is demonstrated through a combination of photolithography and Reactive Ion Etching steps. Protective layers during microfabrication minimize degradation of optoelectronic properties of the organic single crystals during fabrication. Crystals undergoing the patterning process presented a survival rate of 39%. Photoresponse values of up to 41 mA W−1 are obtained under illumination at 500 nm. This opens a route for the industrial‐scale fabrication process of high‐performance optoelectronic devices based on organic crystals semiconductors.
Self‐Reconstruction of Sulfate‐Containing High Entropy Sulfide for Exceptionally High‐Performance Oxygen Evolution Reaction Electrocatalyst
Authors: Nguyen Thi Xuyen , Su Yen‐Hsun , Lin Chia‐Chun , Ting Jyh‐Ming 
Published: August 2021

AbstractNovel earth‐abundant metal sulfate‐containing high entropy sulfides, FeNiCoCrXS2 (where X = Mn, Cu, Zn, or Al), are synthesized via a two‐step solvothermal method. It is shown that sulfate‐containing FeNiCoCrMnS2 exhibits superior oxygen evolution reaction (OER) activity with an exceptionally low overpotential of 199, 246, 285, and 308 mV at current densities of 10, 100, 500, and 1000 mA cm–2, respectively, and surpassing its unary‐, binary‐, ternary‐, and quaternary‐metal counterparts. The electrocatalyst yields exceptional stability after 12 000 cycles and 55 h of durability even at a high current density of 500 mA cm–2. Various in situ and ex situ analyses are used to investigate the self‐reconstruction of the sulfides during the OER for the first time. The resulting metal (oxy)hydroxide is believed to be the true active center for OER. The remaining sulfate also contributes to the catalytic activity. Density function theory calculation is in good agreement with the experimental result. The extraordinary OER performance of the high entropy sulfide brings a great opportunity for desirable catalyst design for practical applications.
Manipulating Electrocatalytic Li2S Redox via Selective Dual‐Defect Engineering for Li–S Batteries
Authors: Shi Zixiong , Sun Zhongti , Cai Jingsheng , Yang Xianzhong , Wei Chaohui , Wang Menglei , Ding Yifan , Sun Jingyu 
Published: August 2021

AbstractLithium–sulfur (Li–S) batteries are promising candidates for next‐generation energy storage, yet they are plagued by the notorious polysulfide shuttle effect and sluggish redox kinetics. While rationally designed redox mediators can facilitate polysulfide conversion, favorable bidirectional sulfur electrocatalysis remains a formidable challenge. Herein, selective dual‐defect engineering (i.e., introducing both N‐doping and Se‐vacancies) of a common MoSe2 electrocatalyst is used to manipulate the bidirectional Li2S redox. Systematic theoretical prediction and detailed electrokinetic analysis reveal the selective electrocatalytic effect of the two types of defects, thereby achieving a deeper mechanistic understanding of the bidirectional sulfur electrochemistry. The Li–S battery using this electrocatalyst exhibits excellent cyclability, with a low capacity decay rate of 0.04% per cycle over 1000 cycles at 2.0 C. More impressively, the potential for practical applications is highlighted by a high areal capacity (7.3 mAh cm−2) and the construction of a flexible pouch cell. Such selective electrocatalysis created by dual‐defect engineering is an appealing approach toward working Li–S systems.
2D Ti3C2Tx MXenes: Visible Black but Infrared White Materials
Authors: Li Yang , Xiong Cheng , Huang He , Peng Xudong , Mei Deqing , Li Meng , Liu Gongze , Wu Maochun , Zhao Tianshou , Huang Baoling 
Published: August 2021

AbstractBlack inorganic materials with low infrared absorption/emission (or IR white) are rare in nature but highly desired in numerous areas, such as solar–thermal energy harvesting, multispectral camouflage, thermal insulation, and anti‐counterfeiting. Due to the lack of spectral selectivity in intrinsic materials, such counter‐intuitive properties are generally realized by constructing complicated subwavelength metamaterials with costly nanofabrication techniques. Here, the intrinsically low mid‐IR emissivity (down to 10%) of the 2D Ti3C2Tx MXene is reported. Associated with a high solar absorptance (up to 90%), it embraces the best spectral selectivity among the reported intrinsic black solar‐absorbing materials. Its appealing potential in several of the aforementioned areas is experimentally demonstrated. First‐principles calculations reveal that the IR emissivity of MXene relies on both the nanoflake orientations and terminal groups, indicating great tunability. The calculations also suggest more potential low‐emissivity MXenes including Ti2CTx, Nb2CTx, and V2CTx. This work opens the avenue to further exploration of a family of intrinsically low‐emissivity materials with over 70 members.
Mo2N–W2N Heterostructures Embedded in Spherical Carbon Superstructure as Highly Efficient Polysulfide Electrocatalysts for Stable Room‐Temperature Na–S Batteries
Authors: Zhang Shipeng , Yao Yu , Jiao Xiaojuan , Ma Mingze , Huang Huijuan , Zhou Xuefeng , Wang Lifeng , Bai Jintao , Yu Yan 
Published: August 2021

AbstractRoom‐temperature sodium–sulfur (RT Na–S) batteries are highly desirable for a sustainable large‐scale energy‐storage system due to their high energy density and low cost. Nevertheless, practical applications of RT Na–S batteries are still prevented by the shuttle effect of sodium polysulfides (NaPS), slow reaction kinetics of S, and incomplete conversion process of NaPS. Here, Mo2N–W2N heterostructures embedded in a spherical carbon superstructure (Mo2N–W2N@PC) are designed to efficiently suppress the “polysulfide shuttle” and promote NaPS redox reactions. The designed Mo2N–W2N@PC heterostructure with abundant heterointerfaces, high conductivity, and porosity can facilitate electron/ion diffusion and provide high catalytic activity for efficient NaPS conversion. The obtained Na–S battery delivers high reversible capacity with superior long‐term cyclability (517 mAh g−1 at 1 A g−1 after 400 cycles) and unprecedented rate capability (417 mAh g−1 at 2 A g−1). Furthermore, the electrocatalysis mechanism is revealed by combining in situ X‐ray diffraction (XRD), ex situ X‐ray photoelectron spectroscopy (XPS), UV–vis spectra, and precipitation experiments. This work demonstrates a novel heterostructure design strategy that enables high‐performance Na–S batteries.
A Facile One‐Pot Method for Fabricating Assembled Gold Nanoparticle Films with Tunable Morphologies Directly from Chloroauric Acid
Authors: Wu Qiu‐yan , Wu Peng , Zhong Lu‐bin , Zhang Qi‐jun , Zhao Xue‐qin , Zheng Yu‐ming 
Published: August 2021

AbstractAssemblies of nanoparticles possess extensive potentials for various applications due to their unique properties. These properties are significantly related to the morphology (size, shape) and spatial positioning of nanoparticles. To meet the needs of different application fields, it is important to tune the structures of assemblies in a controllable way. Currently, the morphology control and assembly of nanoparticles are generally conducted in two separate steps, which cannot resolve the contradiction between the need of sufficient surface charge for stabilizing nanoparticles and the necessity of overcoming the electrostatic repulsion during self‐assembly process. In this study, a simple one‐pot method to fabricate assembled gold nanoparticles (AuNPs) films with tunable morphologies is proposed. AuNPs are synthesized and self‐assembled simultaneously at cyclohexanone–water interface. The cyclohexanone in this system not only reduces the chloroauric acid solution to form AuNPs, but also establishes an oil–water interface with low interface energy, which can capture the AuNPs effectively for forming an ordered array. Furthermore, the morphologies of AuNPs are manipulated by simply tuning pH of the chloroauric acid solution. The fabricated AuNPs films with different morphologies are demonstrated to be applicable for surface enhanced Raman scattering detection, catalytic monitoring, and sensing.
An Organic Electrochemical Transistor to Monitor Salmonella Growth in Real‐Time
Authors: Butina Karen , Filipović Filip , Richter‐Dahlfors Agneta , Parlak Onur 
Published: August 2021

AbstractOrganic electrochemical transistors (OECTs) are used in research and diagnostic applications due to their facile manufacture, scalability, and biocompatibility. In these devices, the source–drain current upon gate voltage application depends on ion concentration in the electrolyte. This study investigates whether an OECT can be employed to monitor bacterial growth since it is known that the concentration of charged species increases in bacterial cultures during growth. A poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate‐based single‐well OECT, compatible with long‐term incubation of bacterial cultures, is fabricated. It is shown that the growth of Salmonella alters the transfer characteristics of the device and demonstrates how it can be applied to monitor growth in real‐time by recording the source–drain current at gate voltage +0.5 V. The signal can also be measured in filtrates of bacterial cultures, devoid of bacterial cells. This suggests that the signal originates from charged metabolic products. Bacterial biofilm formation does not alter the device response. This proof‐of‐principle study presents OECT recordings as an alternative to optical methods, allowing bacterial growth to be monitored in transparent and opaque media alike. By measuring metabolic products rather than bacterial cell multiplication, insight into the stationary phase and other nondividing states may be obtained in the future.
FeCo/ZnO Composite Nanofibers for Broadband and High Efficiency Microwave Absorption
Authors: Yang Jingnan , Guan Guangguang , Yan Liang , Xu Jiahuan , Xiang Jun , Zhang Kaiyin 
Published: August 2021

AbstractIn this work, a novel nanofibrous absorber composed of FeCo alloy and ZnO nanoparticles (denoted as FeCo/ZnO NFs) is fabricated through electrospinning and subsequent calcination and hydrogen reduction. Benefiting from the advantages of their unique 1D and derived 3D network hierarchical structure, as well as the good synergistic effect between magnetic FeCo alloy and dielectric ZnO within the 1D nanospace, the present FeCo/ZnO NFs exhibit outstanding microwave absorption properties with an optimal reflection loss value of −83.4 dB and an effective absorption bandwidth of 8 GHz (10.0–18 GHz) at a small coating thickness of only 1.3 mm. Such performance is remarkably superior to those of many previously reported magnetic ZnO‐based absorbers, highlighting the great application potential of FeCo/ZnO NFs in the field of microwave absorption.
Pd‐Catalyzed Cyclization of Alkynyl Norbornene Derivatives for the Synthesis of Benzofused Heteroarenes
Authors: Kwak Hayeon , Kang Eunsu , Song Jae Yeong , Kang Geunhee , Joo Jung Min 
Published: August 2021

AbstractModular approaches, which allow a systematic variation of heteroaromatic cores and substituents, are crucial for the development of heteroaromatic drug candidates and organic functional materials. A new strategy involving the cyclization of heteroarenes tethered with alkynes through a norbornene bridge was developed. The precursors were readily prepared by a three‐component coupling process of heteroaryl halides, norbornadiene, and terminal alkynes. The Pd catalytic system derived from Pd(OAc)2and 2‐(pyrazol‐1‐yl)pyridine transformed a variety of five‐membered heteroarenes to the corresponding benzofused products, including (di)benzothiophene, indazole, carbazole, indole, and benzofuran, with aryl and alkyl substituents at the C4(C7) position. During the cyclization process, the norbornene ring underwent a retro‐Diels‐Alder reaction, serving as an acetylene synthon. This approach was used to synthesize naphthalene derivatives from electron‐rich arenes, demonstrating its versatility in the annulation of (hetero)aromatic rings.magnified image
Synthesis of 2‐Imino‐1,3,4‐Selenadiazoles via Tributylphosphine‐Mediated Annulation of N‐Aroyldiazenes with Isoselenocyanates
Authors: Huang Zhengyan , Zhang Qianqian , Yi Xiaofei , Zhao Zongxiang , Yu Wenquan , Chang Junbiao 
Published: August 2021

Abstract2‐Imino‐1,3,4‐selenadiazole derivatives can be synthesized from hydrazides and isoselenocyanates by sequential oxidation and a tributylphosphine (PBu3)‐promoted annulation reaction at room temperature. In this synthetic process, crude less stable N‐aroyldiazene intermediates generated by I2‐mediated oxidation of hydrazides were used directly in a subsequent annulation reaction to afford the selenadiazole products. The merits of the present synthetic strategy also include absence of transition metals and gram‐scale synthesis.magnified image
Molecular Oxygen‐Mediated Radical Cyclization of Acrylamides with Boronic Acids
Authors: Pan Changduo , Yuan Cheng , Yu Jin‐Tao 
Published: August 2021

AbstractA radical alkylarylation of 2‐aryl‐N‐methacryloyl indoles via autoxidation of alkylboronic acids was developed under metal‐free conditions for the construction of indolo[2,1‐a]isoquinolinone derivatives. Primary and secondary alkyl boronic acids were utilized as suitable alkyl sources with O2 as the clean and green oxidant in a simple operate mode. Moreover, this protocol can also be applied to the construction of benzimidazo‐[2,1‐a]isoquinolinone derivatives.magnified image
Ir(I)‐Catalyzed C−H Glycosylation for Synthesis of 2‐Indolyl‐C‐Deoxyglycosides
Authors: Yu Changyue , Liu Yichu , Xie Xiong , Hu Shulei , Zhang Shurui , Zeng Mingjie , Zhang Dan , Wang Jiang , Liu Hong 
Published: August 2021

AbstractThe construction of 2‐deoxy‐C‐glycosides has gradually become a hotspot of carbohydrate chemistry in recent years. In this work, we present an efficient, regioselective, stereoselective and widely applicable strategy for the synthesis of 2‐indolyl‐C‐deoxyglycosides via Ir(I)‐catalyzed, pyridine‐group‐directed C−H functionalization. This method exhibits high tolerance for the functional groups of indoles and the protecting groups of carbohydrates. Moreover, this protocol has good stereoselectivity and mainly produces β‐configuration products. Gram‐scale synthesis and several practical transformations were conducted for further applications. Meantime, we also explored the mechanism of this method and proposed a catalytic cyclemagnified image
Advanced Nanotechnologies for Extracellular Vesicle‐Based Liquid Biopsy
Authors: Min Li , Wang Binshuai , Bao Han , Li Xinran , Zhao Libo , Meng Jingxin , Wang Shutao 
Published: August 2021

AbstractExtracellular vesicles (EVs) are emerging as a new source of biomarkers in liquid biopsy because of their wide presence in most body fluids and their ability to load cargoes from disease‐related cells. Owing to the crucial role of EVs in disease diagnosis and treatment, significant efforts have been made to isolate, detect, and analyze EVs with high efficiency. A recent overview of advanced EV detection nanotechnologies is discussed here. First, several key challenges in EV‐based liquid biopsies are introduced. Then, the related pivotal advances in nanotechnologies for EV isolation based on physical features, chemical affinity, and the combination of nanostructures and chemical affinity are summarized. Next, a summary of high‐sensitivity sensors for EV detection and advanced approaches for single EV detection are provided. Later, EV analysis is introduced in practical clinical scenarios, and the application of machine learning in this field is highlighted. Finally, future opportunities for the development of next‐generation nanotechnologies for EV detection are presented.