bluuebunny/crossref_metadata_2025_split huggingface dataset:
Escribir
Authors: Pérez Pelayo 
Published: November 2022

En 2017 publiqué en Eikasía un artículo dedicado, como este, a Ricardo Sánchez Ortiz de Urbina, titulado «Hablar, leer, escribir». Ahora, en este merecido homenaje, vuelvo sobre aquellas impresiones intentando aplicar las enseñanzas de Urbina, inagotables, necesarias y esenciales. Es pues un acto de reconocimiento.
Escribir es una acción que afronta un horizonte impreciso, puesto que al inicio, en las primeras frases, no podemos intuir cual será su desarrollo, las variaciones, las complejidades, los obstáculos con los que tropezaremos a medida que avancemos en la escritura. Hay pues un aspecto teleológico en el verbo «escribir». Escribimos sobre esto o aquello, incluso por el «mero hecho» de escribir. Pero, en cualquier caso, «escribir» implica o requiere una idea reguladora, o un argumento, como Juan Benet destacaba como condición para escribir una novela.
Persepsi Masyarakat Terhadap Rencana Relokasi Pasar Youtefa Lama Ke Pasar Induk Regional Youtefa Di Kota Jayapura
Authors: Michael Narwastu Arunglangi  , Lazarus Ramandei  
Published: November 2022

Penelitian ini dilatar belakangi oleh adanya rencana relokasi Pasar Induk Regional Youtefa lama ke Pasar Induk Regional Youtefa Baru, yang merupakan himbauan dari pemerintah Kota Jayapura. Karena pemerintah Kota Jayapura melihat bahwa Pasar Youtefa lama memiliki berbagai permasalahan, seperti terjadinya ahli fungsi lahan pada saat pembangunan Pasar Youtefa, dimana sebelumnya Pasar Youtefa merupakan hutan sagu dan daerah resapan air, adapun permasalahan lain akibat dari terjadinya ahli fungsi lahan adalah; banjir, sarana-prasarana tidak berfungsi baik. Akibat dari himbauan pemerintah untuk merelokasi Pasar Youtefa lama ke Pasar Youtefa baru timbul berbagai macam persepsi dari berbagai macam masyarakat yaitu; pedagang dan konsumen.
Tujuan dari penelitian ini adalah: (1) Persepsi masyarakat terkait rencana relokasi Pasar Youtefa lama ke Pasar Youtefa baru (2) Faktor apa saja yang mempengaruhi relokasi Pasar Youtefa lama ke Pasar Induk Regional Youtefa baru (3) Upaya yang dilakukan pemerintah untuk meyakinkan pedagang dan konsumen terkait rencana relokasi Pasar Youtefa lama ke Pasar Yooutefa baru.
Dari berbagai macam tujuan diatas dapat diambil kesimpulan bahwa rata-rata persepsi masyarakat mengenai pemindahan Pasar Youtefa lama yaitu tidak setuju yang di dominas mayoritas adalah pedagang dan konsumen lama yang sudah berjualan lebih dari 5 tahun sedangankan rata-rata yang setuju di dominasi oleh pedagang baru dan kosumen baru yang baru berjualan dan berbelanja di Pasar Youtefa kurang dari 1 tahun.
Linear Algorithms for Robust and Scalable Nonparametric Multiclass Probability Estimation
Authors: Zeng Liyun , Zhang Hao Helen 
Published: November 2022

Multiclass probability estimation is the problem of estimating conditional probabilities of a data point belonging to a class given its covariate information. It has broad applications in statistical analysis and data science. Recently a class of weighted Support Vector Machines (wSVMs) has been developed to estimate class probabilities through ensemble learning for K-class problems (Wu et al., 2010; Wang et al., 2019), where K is the number of classes. The estimators are robust and achieve high accuracy for probability estimation, but their learning is implemented through pairwise coupling, which demands polynomial time in K. In this paper, we propose two new learning schemes, the baseline learning and the One-vs-All (OVA) learning, to further improve wSVMs in terms of computational efficiency and estimation accuracy. In particular, the baseline learning has optimal computational complexity in the sense that it is linear in K. Though not the most efficient in computation, the OVA is found to have the best estimation accuracy among all the procedures under comparison. The resulting estimators are distribution-free and shown to be consistent. We further conduct extensive numerical experiments to demonstrate their finite sample performance.
Effectiveness of Tonsillectomy vs Modified Uvulopalatopharyngoplasty in Patients With Tonsillar Hypertrophy and Obstructive Sleep Apnea
Authors: Sundman Joar , Nerfeldt Pia , Fehrm Johan , Bring Johan , Browaldh Nanna , Friberg Danielle 
Published: November 2022

ImportanceModified uvulopalatopharyngoplasty (mUPPP) is a surgical treatment for selected adults with obstructive sleep apnea (OSA). Tonsillectomy (TE) alone is a less extensive alternative treatment.ObjectiveTo investigate whether mUPPP is more effective than TE alone in treating adult patients with tonsillar hypertrophy and moderate to severe OSA.Design, Setting, and ParticipantsThis blinded randomized clinical trial compared the effectiveness of mUPPP with TE alone before surgery and 6 months postsurgery in adults with tonsillar hypertrophy (sizes 2, 3, or 4 according to the Friedman staging) and moderate to severe OSA in a university hospital in Stockholm, Sweden. Participants underwent surgery from January 2016 to February 2021; the last postsurgery follow-up was completed in September 2021. Data analyses were performed from January to September 2022.InterventionsmUPPP vs TE alone.Main Outcomes and MeasuresBetween-group differences on the apnea-hypopnea index (AHI) and Epworth sleepiness scale (ESS).ResultsThe study cohort comprised 93 patients (mean [SD] age, 41.6 [9.4] years; 80 [86%] men; race/ethnicity were not considered) with a mean (SD) body mass index of 29.0 (2.8), calculated as weight in kg divided by height in m2. Of these, 90 participants (97%) completed the protocol (mUPPP, n = 45; TE, n = 45). The mean (SD) AHI score (number of events per hour [events/h]) for the mUPPP group decreased by 43%, from 51.0 (22.6) to 28.0 (20.0) events/h; and for the TE group, 56%, from 56.9 (25.1) to 24.7 (22.6) events/h. The mean between-group difference in AHI score was 9.2 events/h (95% CI, 0.5 to 17.9), with a small effect size (Cohen d = 0.44) in favor of TE. For ESS scores, the between-group difference was also small, only 1.1 (95% CI, –1.3 to 3.4; Cohen d = 0.21). Neither difference was considered to be clinically relevant.Conclusions and RelevanceThis randomized clinical trial demonstrated that mUPPP was not more effective than TE alone in treating patients with tonsillar hypertrophy and moderate to severe OSA. However, there was a small difference in favor of TE. Because TE alone is less extensive, it could be considered as an alternative to mUPPP in this selected group of patients with OSA.Trial RegistrationClinicalTrials.gov Identifier: NCT02523248
Nanoimprint Lithography‐Dependent Vertical Composition Gradient in Pseudo‐Planar Heterojunction Organic Solar Cells Combined with Sequential Deposition
Authors: Mao Houdong , Zhang Lifu , Wen Lin , Huang Liqiang , Tan Licheng , Chen Yiwang 
Published: November 2022

AbstractAlthough suitable vertical phase separation morphology in organic solar cells (OSCs) can be obtained by the donor/acceptor sequential deposition (SD) method, the lack of precisely adjusting vertical composition gradient and molecular crystallinity is a key limitation. Here, nanoimprint lithography (NIL) combined with SD dual‐functionalized regulation strategy is first used to fabricate high‐performance pseudo‐planar heterojunction (PPHJ) OSCs, which is conducive to constructing vertical bi‐continuous donor/acceptor network to provide sufficient charge separation interface area and orderly charge transport channels. PM6 donor with regular periodic nanograting structure and improved crystallinity is formed via NIL, effectively avoiding the erosion problem ascribed from the subsequent depositing of the Y6 acceptor. Furthermore, the finite‐different time‐domain (FDTD) measurement is employed to confirm the vertical composition gradient of the donor/acceptor, revealing a strong regular light absorption and reduced voltage loss. As a result, the best‐imprinted device enables a power conversion efficiency as high as 17.36%, which is higher than the control SD‐based device (15.46%). It is the first time to obtain high‐quality PM6 nanograting by NIL, which can provide an avenue to form favorable phase separation morphology and adjust the vertical composition gradient for the high‐performance PPHJ OSCs.
Orbital Interactions between the Organic Semiconductor Spacer and the Inorganic Layer in Dion–Jacobson Perovskites Enable Efficient Solar Cells
Authors: Dong Yixin , Dong Xiyue , Lu Di , Chen Mingqian , Zheng Nan , Wang Rui , Li Qiaohui , Xie Zengqi , Liu Yongsheng 
Published: November 2022

Abstract2D Dion–Jacobson (DJ) perovskites have become emerging photovoltaic materials owing to their intrinsic structure stability. However, as insulating aliphatic cations are widely used as spacers, the interactions between the spacers and inorganic layers in DJ perovskites have rarely been studied. Here, an organic semiconductor spacer with two covalently connected thiophene rings, namely bithiophene dimethylammonium (BThDMA), is successfully developed for 2D DJ perovskite solar cells (PSCs). An important finding is that there are strong orbital interactions between the conjugated organic spacer and adjacent inorganic layers, whereas no such interactions exist in DJ perovskite using an aliphatic octane‐1,8‐diaminium (ODA) spacer with similar length. The BThDMA spacer with multiple conjugated aromatic rings can also induce crystal growth with large grain size and preferred vertical orientation, resulting in reduced trap density and improved charge‐carrier mobility. As a result, the optimized device based on (BThDMA)MAn−1PbnI3n+1 (nominal n = 5) shows an excellent PCE of 18.1% with negligible hysteresis, which is a record efficiency for 2D DJ PSCs using a spacer with two or more covalently linked aromatic rings. These findings provide a novel and important insight on achieving efficient and stable 2D DJ perovskite solar cells by developing organic semiconductor spacers.
Donor or Acceptor: Molecular Engineering Based on dibenzo[a,c]phenazine Backbone for Highly Efficient Thermally‐Activated Delayed Fluorescence Organic Light‐Emitting Diodes
Authors: Liu Yanyan , Yang Jiaji , Mao Zhu , Ma Dongyu , Wang Yuyuan , Zhao Juan , Su Shi‐Jian , Chi Zhenguo 
Published: November 2022

AbstractThermally‐activated delayed fluorescence (TADF) emitters are usually constructed with twisted donor‐acceptor (D‐A) frameworks, while studies on the relationship between diverse D‐A structures are still in high demand to achieve high‐performance emitters. Herein, by adopting triphenylamine as electron donor and dibenzo[a,c]phenazine as electron acceptor, three TADF molecules are reported with different frameworks of D‐A (TPZ), D‐A‐D (DPZ) and D‐A‐A (APZ). Theoretical and experimental results demonstrate that different D‐A frameworks play significant effects on photophysical, horizontal dipole ratio, and electroluminescence properties of the TADF molecules. In comparison, the APZ‐OLED device achieves the best performance with a maximum external quantum efficiency of 27.5%, resulting from its low energy gap between the singlet and triplet, effective reverse intersystem crossing, high photoluminescence quantum yield, and horizontal dipole ratio. This work provides an insight into the relationship between efficient TADF emitters and rational molecular design engineering.
Rain Energy Harvesting Using Atomically Thin Gadolinium Telluride Decorated 3D Printed Nanogenerator
Authors: Kumbhakar Partha , Parui Arko , Ambekar Rushikesh S. , Mukherjee Madhubanti , Siddique Saif , Pugno Nicola M. , Singh Abhishek K. , Tiwary Chandra S. 
Published: November 2022

AbstractThe 3D printing (3DP) technology offers an innovative approach to developing energy storage devices to create facile and low‐cost customized electrodes for modern electronics. Generating electric potential by moving a droplet of ionic solution over 2D materials is a novel method for rain energy harvesting. This work demonstrates a liquid‐solid contact electrification‐based 3DP nanogenerator where raindrop passes through the positively charged ultrathin gadolinium telluride (Gd2Te3) sheets. The output efficiency of the nanogenerator is increased to ≈400% by enhancing the surface area of copious 3D‐printed porous structures. The density functional theory (DFT) calculations reveal that the high electrical conductivity of (112) surface of Gd2Te3 is due to the p‐type charge carriers, which help to generate electricity by interacting with the ionic solution. This work can open up a new avenue to advance scientific research on blue energy harvesting and tackle the energy crisis.
Risk factors for dementia in Brazil: Differences by region and race
Authors: Suemoto Claudia K. , Mukadam Naaheed , Brucki Sonia M.D. , Caramelli Paulo , Nitrini Ricardo , Laks Jerson , Livingston Gill , Ferri Cleusa P. 
Published: November 2022

AbstractIntroductionTwelve risk factors (RFs) account for 40% of dementia cases worldwide. However, most data for population attributable fractions (PAFs) are from high‐income countries (HIC). We estimated how much these RFs account for dementia cases in Brazil, stratifying estimates by race and socioeconomic level.MethodsWe calculated the prevalence and communalities of 12 RFs using 9412 Brazilian Longitudinal Study of Aging participants, then stratified according to self‐reported race and country macro‐regions.ResultsThe overall weighted PAF was 48.2%. Less education had the largest PAF (7.7%), followed by hypertension (7.6%), and hearing loss (6.8%). PAF was 49.0% and 54.0% in the richest and poorest regions, respectively. PAFs were similar among White and Black individuals (47.8% and 47.2%, respectively) but the importance of the main RF varied by race.DiscussionBrazil's potential for dementia prevention is higher than in HIC. Education, hypertension, and hearing loss should be priority targets.
In Situ Observation of C−C Coupling and Step Poisoning During the Growth of Hydrocarbon Chains on Ni(111)
Authors: Zou Zhiyu , Sala Alessandro , Panighel Mirco , Tosi Ezequiel , Lacovig Paolo , Lizzit Silvano , Scardamaglia Mattia , Kokkonen Esko , Cepek Cinzia , Africh Cristina , Comelli Giovanni , Günther Sebastian , Patera Laerte L. 
Published: November 2022

AbstractThe synthesis of high‐value fuels and plastics starting from small hydrocarbon molecules plays a central role in the current transition towards renewable energy. However, the detailed mechanisms driving the growth of hydrocarbon chains remain to a large extent unknown. Here we investigated the formation of hydrocarbon chains resulting from acetylene polymerization on a Ni(111) model catalyst surface. Exploiting X‐ray photoelectron spectroscopy up to near‐ambient pressures, the intermediate species and reaction products have been identified. Complementary in situ scanning tunneling microscopy observations shed light onto the C−C coupling mechanism. While the step edges of the metal catalyst are commonly assumed to be the active sites for the C−C coupling, we showed that the polymerization occurs instead on the flat terraces of the metallic surface.
Spectroscopic Manifestations and Implications for Catalysis of Quasi‐d10Configurations in Formal Gold(III) Complexes
Authors: Trifonova Evgeniya A. , Leach Isaac F. , de Haas Winfried B. , Havenith Remco W. A. , Tromp Moniek , Klein Johannes E. M. N. 
Published: November 2022

AbstractSeveral gold +I and +III complexes are investigated computationally and spectroscopically, focusing on the d‐configuration and physical oxidation state of the metal center. Density functional theory calculations reveal the non‐negligible electron‐sharing covalent character of the metal‐to‐ligand σ‐bonding framework. The bonding of gold(III) is shown to be isoelectronic to the formal CuIIIcomplex [Cu(CF3)4]1−, in which the metal center tries to populate its formally unoccupied 3dx2‐y2orbital via σ‐bonding, leading to a reduced d10CuIdescription. However, Au L3‐edge X‐ray absorption spectroscopy reveals excitation into the d‐orbital of the AuIIIspecies is still possible, showing that a genuine d10configuration is not achieved. We also find an increased electron‐sharing nature of the σ‐bonds in the AuIspecies, relative to their AgIand CuIanalogues, due to the low‐lying 6s orbital. We propose that gold +I and +III complexes form similar bonds with substrates, owing primarily to participation of the 5dx2‐y2or 6s orbital, respectively, in bonding, indicating why AuIand AuIIIcomplexes often have similar reactivity.
Spin‐Selective Charge Transport in Lead‐Free Chiral Perovskites: The Key towards High‐Anisotropy in Circularly‐Polarized Light Detection
Authors: Maiti Abhishek , Pal Amlan J. 
Published: November 2022

AbstractA pair of zero‐dimensional lead‐free chiral perovskites is introduced towards the detection of circularly polarized light (CPL). Although spin‐polarized carriers are generated in the perovskites under the CPL, the absorption anisotropy remained low leading to mostly similar density of photogenerated carriers under the two CPLs. Interestingly, due to the intrinsic chirality in the perovskites, they exhibited chirality‐induced spin‐selectivity (CISS) allowing the transport of only one type of spin‐half states. A high anisotropy in photocurrent along the out‐of‐plane direction has therefore appeared resulting in a spin‐dependent photovoltaic effect in vertical heterojunction devices and making them suitable for CPL detection. While a self‐powered CPL detector showed a limited (but one of the highest to date) anisotropy factor of 0.3 due to possible spin‐flips during the transport process, the factor rose to 0.6 under bias prompting extension of the effective spin‐diffusion length.
The Marriage of Sierpiński Triangles and Platonic Polyhedra
Authors: Wang Jun , Jiang Zhilong , Liu Weiya , Wu Zihao , Miao Rui , Fu Fan , Yin Jia‐Fu , Chen Bangtang , Dong Qiangqiang , Zhao He , Li Kaixiu , Wang Guotao , Liu Die , Yin Panchao , Li Yiming , Chen Mingzhao , Wang Pingshan 
Published: November 2022

AbstractFractal structures with self‐similarity are of fundamental importance in the fields of aesthetic, chemistry and mathematics. Here, by taking advantage of constructs the rational geometry‐directed precursor design, we report the construction of two fascinating Platonic solids, the Sierpiński tetrahedron ST‐T and the Sierpiński octahedron ST‐O, in which each possesses a fractal Sierpiński triangle on their independent faces. These two discrete complexes are formed in near‐quantitative yield from the multi‐component self‐assembly of truncated Sierpiński triangular kernel L1 with tribenzotriquinacene‐based hexatopic and anthracene‐based tetratopic terpyridine ligands (L3 and L4) in the presence of metal ions, respectively. The enhanced stabilities of the 3D discrete structures were investigated by gradient tandem mass spectrometry (gMS2). This work provides new constructs for the imitation of complex virus assemblies and for the molecular encapsulation of giant guest molecules.
Conversion of Polyethylenes into Fungal Secondary Metabolites
Authors: Rabot Chris , Chen Yuhao , Bijlani Swati , Chiang Yi‐Ming , Oakley C. Elizabeth , Oakley Berl R. , Williams Travis J. , Wang Clay C. C. 
Published: November 2022

AbstractWaste plastics represent major environmental and economic burdens due to their ubiquity, slow breakdown rates, and inadequacy of current recycling routes. Polyethylenes are particularly problematic, because they lack robust recycling approaches despite being the most abundant plastics in use today. We report a novel chemical and biological approach for the rapid conversion of polyethylenes into structurally complex and pharmacologically active compounds. We present conditions for aerobic, catalytic digestion of polyethylenes collected from post‐consumer and oceanic waste streams, creating carboxylic diacids that can then be used as a carbon source by the fungus Aspergillus nidulans. As a proof of principle, we have engineered strains of A. nidulans to synthesize the fungal secondary metabolites asperbenzaldehyde, citreoviridin, and mutilin when grown on these digestion products. This hybrid approach considerably expands the range of products to which polyethylenes can be upcycled.
Energy harvesting and temperature sensing thermoelectric devices based on the carbon template method
Authors: Jiang Nan , Qu Meijie , Wang Hai , Bin Yuezhen , Zhang Rui , Tang Ping 
Published: November 2022

AbstractA series of self‐supporting carbon nanomaterial films with different morphologies were employed as conductive templates for n‐junction after polyethyleneimine (PEI) doping by taking advantages of the entanglement between carbon nanotubes. With the assistance of dimethyl sulfoxide (DMSO)‐treated poly(3,4‐ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) films as p‐junction, flexible and light‐weight thermoelectric generators (TEGs) were assembled. The effect of the morphology of the carbon nanomaterial, including multi‐walled carbon nanotube (MWCNT), whisker carbon nanotube (WSCNT), and graphene on the electrical conductivity, mechanical properties and morphology of n‐junction was investigated, on basis of which thermoelectric properties of TEG were evaluated. The properties of the three carbon‐based self‐supporting films show significant differences. The MWCNT/PEI film exhibits a tensile strength of up to 36.23 ± 0.57 MPa due to the high entanglement network density of MWCNT. The entanglement of WSCNT/MWCNT/PEI provides an ideal conductive template for PEI to prepare n‐junction material. TEGs with PEDOT:PSS‐DMSO and WSCNT/MWCNT/PEI as p‐ and n‐junctions show high power generation performance and cyclability. The output power density is up to 4.6 nW/cm2 at ΔT = 42.0 K, matched to a suitable load. With its fast response and slow recovery, this TEG is expected to be used for human health monitoring and energy storage.
Efficient production of glutathione in Saccharomyces cerevisiae via a synthetic isozyme system
Authors: Jeon Gi‐Beom , Lee Hyun‐Jae , Park Jong Pil , Park Kyeongsoon , Choi Chang‐Hyung , Kim Sun‐Ki 
Published: November 2022

AbstractGlutathione, a tripeptide consisting of cysteine, glutamic acid, and glycine, has multiple beneficial effects on human health. Previous studies have focused on producing glutathione in Saccharomyces cerevisiae by overexpressing γ‐glutamylcysteine synthetase (GSH1) and glutathione synthetase (GSH2), which are the rate‐limiting enzymes involved in the glutathione biosynthetic pathway. However, the production yield and titer of glutathione remain low due to the feedback inhibition on GSH1. To overcome this limitation, a synthetic isozyme system consisting of a novel bifunctional enzyme (GshF) from Gram‐positive bacteria possessing both GSH1 and GSH2 activities, in addition to GSH1/GSH2, was introduced into S. cerevisiae, as GshF is insensitive to feedback inhibition. Given the HSP60 chaperonin system mismatch between bacteria and S. cerevisiae, co‐expression of Group‐I HSP60 chaperonins (GroEL and GroES) from Escherichia coli was required for functional expression of GshF. Among various strains constructed in this study, the SKSC222 strain capable of synthesizing glutathione with the synthetic isozyme system produced 240 mg L‐1 glutathione with glutathione content and yield of 4.3% and 25.6 mgglutathione/gglucose, respectively. These values were 6.6‐, 4.9‐, and 4.3‐fold higher than the corresponding values of the wild‐type strain. In a glucose‐limited fed‐batch fermentation, the SKSC222 strain produced 2.0 g L‐1 glutathione in 67 h. Therefore, this study highlights the benefits of the synthetic isozyme system in enhancing the production titer and yield of value‐added chemicals by engineered strains of S. cerevisiae.