bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synergistic Effect of Bimetallic MOF Modified Separator for Long Cycle Life Lithium‐Sulfur Batteries
Authors: Razaq Rameez , Din Mir Mehraj Ud , Småbråten Didrik Rene , Eyupoglu Volkan , Janakiram Saravanan , Sunde Tor Olav , Allahgoli Nima , Rettenwander Daniel , Deng Liyuan 
Published: November 2023

AbstractSevere polysulfide dissolution and shuttling are the main challenges that plague the long cycle life and capacity retention of lithium‐sulfur (Li‐S) batteries. To address these challenges, efficient separators are designed and modified with a dual functional bimetallic metal‐organic framework (MOF). Flower‐shaped bimetallic MOFs (i.e., Fe‐ZIF‐8) with nanostructured pores are synthesized at 35 °C in water by introducing dopant metal sites (Fe), which are then coated on a polypropylene (PP) separator to provide selective channels, thereby effectively inhibiting the migration of lithium polysulfides while allowing homogeneous transport of Li‐ions. The active sites of the Fe‐ZIF‐8 enable electrocatalytic conversion, facilitating the conversion of lithium polysulfides. Moreover, the developed separator can prevent dendrite formation due to the uniform pore size and hence the even Li‐ion transport and deposition. A coin cell using a Fe‐ZIF‐8/PP separator with S‐loaded carbon cathode displayed a high cycle life of 1000 cycles with a high initial discharge capacity of 863 mAh g−1 at 0.5 C and a discharge capacity of 746 mAh g−1 at a high rate of 3 C. Promising specific capacity has been documented even under high sulfur loading of 5.0 mg cm−2 and electrolyte to the sulfur ratio (E/S) of 5 µL mg−1.
Continuous‐Flow Enantioselective Hydroacylations under Heterogeneous Chiral Rhodium Catalysts
Authors: Saito Yuki , Kobayashi Shū 
Published: November 2023

AbstractTransition metal‐catalyzed enantioselective C−H bond functionalizations have become efficient methods for the synthesis of complex optically active molecules. Heterogeneous catalysts for this chemistry remain largely unexplored despite the advantages they offer in terms of ease of separation and reuse of catalysts. Herein, we report the development of heterogeneous chiral Rh catalysts for continuous‐flow enantioselective hydroacylations. Heterogeneous catalysts could be prepared simply by mixing supports and Rh complexes. The prepared catalysts exhibited excellent activity and enantioselectivity affording optically active ketones in quantitative yields with 99 % ee's. Under the optimized reaction conditions, a turnover number >300 was achieved without the leaching of Rh species. The catalysts exhibited a wide substrate scope and in sequential‐flow reactions with other heterogeneous catalysts, the syntheses of biologically active molecules and functional materials were demonstrated.
Well‐defined N3C1‐anchored Single‐Metal‐Sites for Oxygen Reduction Reaction
Authors: Huang Senhe , Tranca Diana , Rodríguez‐Hernández Fermin , Zhang Jichao , Lu Chenbao , Zhu Jinhui , Liang Hai‐Wei , Zhuang Xiaodong 
Published: November 2023

AbstractN‐, C‐, O‐, S‐coordinated single‐metal‐sites (SMSs) have garnered significant attention due to the potential for significantly enhanced catalytic capabilities resulting from charge redistribution. However, significant challenges persist in the precise design of well‐defined such SMSs, and the fundamental comprehension has long been impeded in case‐by‐case reports using carbon materials as investigation targets. In this work, the well‐defined molecular catalysts with N3C1‐anchored SMSs, i.e., N‐confused metalloporphyrins (NCPor‐Ms), are calculated for their catalytic oxygen reduction activity. Then, NCPor‐Ms with corresponding N4‐anchored SMSs (metalloporphyrins, Por‐Ms), are synthesized for catalytic activity evaluation. Among all, NCPor‐Co reaches the top in established volcano plots. NCPor‐Co also shows the highest half‐wave potential of 0.83 V vs. RHE, which is much better than that of Por‐Co (0.77 V vs. RHE). Electron‐rich, low band gap and regulated d‐band center contribute to the high activity of NCPor‐Co. This study delves into the examination of well‐defined asymmetric SMS molecular catalysts, encompassing both theoretical and experimental facets. It serves as a pioneering step towards enhancing the fundamental comprehension and facilitating the development of high‐performance asymmetric SMS catalysts.
Study on high‐temperature corrosion in a 600 MW opposed firing boiler
Authors: Ning Xinyu , Wang Jin , Huang Jian , Ding Haoxuan , Li Bin , Deng Lei , Li Yiguo 
Published: November 2023

AbstractLow‐nitrogen burners and air‐staging system, which would generate a large amount of CO and H2S in the furnace, are frequently adopted in the coal‐fired boilers in China. This is one of the main reasons for the high‐temperature corrosion of the water‐cooled wall, while the other is the high wall temperature. In this study, the influences of boiler load, burner tilt angle and near‐wall air (NWA) nozzles numbers on the high‐temperature corrosion of water‐cooled wall in a 600 MW opposed firing boiler are numerically investigated. The results show that the H2S concentration does not decline monotonously with the decreasing boiler load. The H2S concentration declines from 443 to 396 ppm while the average wall temperature decreases by 146 K dramatically when the load descends from 100% BMCR to 50% BMCR. When the effect on both side walls are considered, it is confirmed that the high‐temperature corrosion of the water‐cooled wall would not be alleviated significantly by adjusting the burner tilt angle in this study. Compared with standard condition, the average temperature drops moderately and the maximum H2S concentration drops dramatically from 434 to 367 ppm in the main combustion zone near the left wall when the angle is set at 5°. The reducing atmosphere could be significantly alleviated when NWA nozzles are put into operation. Moreover, a sharp drop of the average CO concentration from 7.8% to 2.1% occurs when only the lower two layers of NWA nozzles are operating.
Grandiose dreams, mega projects: Ottoman nostalgia in ‘new Turkey’
Authors: Çevik Senem B. 
Published: November 2023

AbstractIn January of 2015 Turkey's president Recep Tayyip Erdoğan hosted the Palestinian President Mahmoud Abbas at the newly built extravagant and highly controversial presidential palace. Sixteen warriors representing all of the former Turkic empires in full costume were present at the welcoming ceremony. This paper uses Volkan's psycho‐political framework to understand state‐led efforts of historical revisionism which manifest itself in historical glories and nostalgia for the Ottoman Empire. The central argument posits that grandiose or mega projects strategically serve historical revisionism in Turkey, amplifying selected glories of Turkish society to bolster support for authentic and national narrative, known as “yerli ve milli (domestic and national)”
Microwave Absorption in Ge After Bombardment of Helium Ions Beam
Authors: Lysochenko Serhii , Kukharenko Oleg , Ilchenko Volodymyr , Tolmachov Mykola , Oliynyk Viktor , Launets Vilen , Zagorodnii Volodymyr 
Published: November 2023

AbstractIn this work, the effect of Ge sample bombardment by energy Ei = 1.2 MeV mono‐energetic He+ ions within the fluence range of 1013–1.2 × 1015 cm−2 on the microwave reflection/transmission modification in the frequency range of 26–38 GHz is investigated. It is shown for the first time that such Ge treatment allows achieving a drastic increase in its interaction with microwaves. After the 1 µm thick undersurface area of Ge, accounting for less than 10−3 of its bulk, underwent the fluence of 1.2 × 1015 cm−2, the increase of the microwave absorption coefficient from 0.06 to 0.78 and decrease of the microwave reflection coefficient from 0.7 to 0.18 are observed. This is caused by the occurrence of dangling atomic bonds in nanoscale cavities inside the material. Most probable energy loss mechanisms of microwaves in modified Ge are suggested. Modified semiconductor structures can be used as microwave‐absorbing coverings, devices employing a periodic structure of materials or a gradient of its properties.
Artificial intelligence (AI)‐driven strategic business model innovations in small‐ and medium‐sized enterprises. Insights on technological and strategic enablers for carbon neutral businesses
Authors: Shaik Aqueeb Sohail , Alshibani Safiya Mukhtar , Jain Girish , Gupta Bhumika , Mehrotra Ankit 
Published: November 2023

AbstractThis study investigates the enhancement of technological and strategic enablers for carbon‐neutral businesses (CNB) through artificial intelligence (AI)‐driven business model innovation (AIDBMI). Drawing upon the insights gained from the literature review, the study employs structural equation modeling (partial least squares structural equation modeling [PLS‐SEM]) as the methodology to examine the relationships between AIDBMI, technological enablers, strategic enablers, and the attainment of carbon neutrality. The sample size consists of 326 small‐ and medium‐sized enterprises (SMEs) in the United States of America. The findings of this study affirm the significant positive relationships between AIDBMI and both technological and strategic enablers for CNB. The utilization of AI technologies proves to be instrumental in fostering the development and implementation of innovative business models that integrate sustainability practices and address environmental challenges. By leveraging AIDBMI, SMEs can harness technological advancements to adopt energy‐efficient processes, embrace renewable energy solutions, and implement effective carbon reduction strategies. Moreover, the study highlights the critical role of strategic enablers in driving the transition towards carbon neutrality. The alignment of sustainability goals with organizational strategies, stakeholder collaboration, and employee engagement emerge as pivotal factors in enabling SMEs to effectively utilize AIDBMI and leverage technological advancements to achieve carbon neutrality. The implications of this study contribute to the existing literature by highlighting the importance of technological and strategic enablers in creating CNB. By integrating AIDBMI, organizations can drive sustainable transformations, optimize their operations, and align their resource management with sustainable practices. These insights provide valuable guidance for SMEs, policymakers, and researchers seeking to foster sustainable practices, promote carbon neutrality, and contribute to the advancement of a low‐carbon economy.
The efficacy and safety of chemotherapy with or without anti‐PD‐1 for the first‐line treatment of advanced urothelial carcinoma
Authors: Han Fuxin , Wu Zhaozhen , Chen Jiaxin , Liu Meicen , Hu Yi 
Published: November 2023

AbstractObjectiveTo compare the efficacy and safety of first‐line anti‐PD‐1 combined with chemotherapy versus chemotherapy alone in patients with advanced urothelial carcinoma (UC).MethodPatients with advanced UC who received first‐line treatment of chemotherapy (n = 51, gemcitabine/paclitaxel [albumin‐bound] combined with platinum) or immunochemotherapy (n = 50, PD‐1 inhibitors plus chemotherapy) were enrolled. The efficacy and safety were analyzed between the two groups.ResultsThis study included data from 101 patients, including 51 patients in the chemotherapy group and 50 patients in the immunochemotherapy group. The median progression‐free survival of the immunochemotherapy group was significantly longer than that of the chemotherapy group (11.5 vs. 7.17 m, HR = 0.56, p = 0.009). The two groups' overall survival showed no significant difference (20.3 vs. 17.8 m, p = 0.204). The objective response rates and the disease control rates of the two groups were 38.0% versus 49.0% (p = 0.26) and 88.0% versus 80.4% (p = 0.29). The incidence of adverse reactions (AEs) in the immunochemotherapy group and chemotherapy group were 90.0% and 84.3% (p = 0.394), respectively, and the incidence of Grade III–IV AEs were 32.0% and 35.3% (p = 0.726), respectively.ConclusionIn the first‐line treatment of patients with advanced UC, anti‐PD‐1 therapy combined with chemotherapy might have better efficacy than chemotherapy alone, and AEs are similar between the two groups.
An ophthalmologist with myocardial bridging developed takotsubo cardiomyopathy while operating; A case report and literature review
Authors: Al‐sadi Anas , Al‐Qahtani Awad , Al‐Khalaila Osama , Jawarneh Israa , Karim Sabir Abdul 
Published: November 2023

Key Clinical MessageHealthcare workers are prone to very high level of physical as well as emotional stress that lead to devastating health‐related consequences which include but not limited to cardiovascular events that may lead to death. Recognizing the risk of Takotsubo Cardiomyopathy among healthcare worker is the main aim of this report.AbstractTakotsubo Cardiomyopathy (TC) is a reversible left ventricular wall motion abnormality that could not be explained by coronary artery disease and is typically precipitated by either emotional or physical stress. There is no sufficient data regarding the incidence of TC among healthcare workers and people with myocardial bridging. Here we are describing a case of an ophthalmologist with myocardial bridging who developed TC while in the operation theater.
Carboxymethylation of Cinnamyl Alcohol with Dimethyl Carbonate over Graphitic Carbon Nitrides
Authors: Shcherban Nataliya D. , Kholkina Ekaterina , Sergiienko Sergii , Kovalevsky Andrei V. , Bezverkhyy Igor , Murzin Dmitry Yu. 
Published: November 2023

AbstractA set of graphitic carbon nitride samples was prepared using a straightforward experimental procedure without templates and any subsequent treatments. The materials were studied in‐depth using a range of physical and chemical methods such as X‐ray diffraction, FTIR spectroscopy, elemental analysis (CHN), nitrogen physisorption, SEM, XPS, TPD CO2. The resulting g‐C3N4 was shown to be highly efficient in carboxymethylation of cinnamyl alcohol with dimethyl carbonate yielding up to ca. 82 % of the desired cinnamyl methyl carbonate. In the studied conditions, an increase in the surface N atomic content leads to an increase in selectivity towards the desired carbonate, while a higher surface O content was beneficial for side products. Metal‐free graphitic carbon nitride was shown to be one of the most productive (ca. 2 mol/h kgcat) in the investigated reaction among studied heterogeneous catalysts.
Extended Hypothesis for Reynolds Stress Tensor and Turbulent Heat Flux Modeling Within a Novel K‐ε Model for Prediction of Crystal Growth from the Melt
Authors: Kalaev Vladimir , Borisov Dmitriy 
Published: November 2023

AbstractThe major technique of manufacturing silicon monocrystals is Czochralski (Cz) method. To obtain high‐quality crystals, it is necessary to control the melt flow that is turbulent. The most cost‐effective approach for modeling turbulence nowadays is RANS (Reynolds Averaged Navier‐Stokes) that allows for providing steady axisymmetric computations using reasonable grids. However, conventional eddy‐viscosity RANS models usually fail to predict spatial details of turbulence characteristics of the melt flow. To overcome the limitations of the eddy‐viscosity approach the Stress Tensor Reconstruction (STR) approach is developed that is aimed at the reproduction of anisotropy of the Reynolds stresses. The Generalized Gradient Diffusion Hypothesis (GGDH) in combination with the STR approach successfully takes into account the anisotropy of turbulent fluxes in a melt flow. Relying upon the STR/GGDH approach a novel RANS STR k‐ε model is developed. The model is validated using the ILES (Implicit Large Eddy Simulation) data of turbulent melt convection during Cz Si crystal growth, as well, as the experimental data of oxygen concentration in 100 and 200 mm diameter Cz crystals. The results are compared to the results obtained with the conventional low Reynolds number Chien k‐ε model extended by the buoyancy generation term.
Characterising the heterogeneous nature of tufa mounds by integrating petrographic, petrophysical, acoustic and electromagnetic measurements
Authors: Schröder S. , Corella J. P. , Pellicer X. M. , Rook P. , Kara A. , Comas X. 
Published: November 2023

AbstractDetermination of the physical properties of subsurface geological bodies is essential for georesource management and geotechnical applications. In the absence of direct measurements, this usually passes via geophysical methods such as seismic and ground‐penetrating radar. These require conversion to physical properties, and measurements at different scales to test for consistency. This approach is non‐trivial in geobodies with heterogeneous patterns of properties. Tufa mounds—in‐situ terrestrial carbonate buildups precipitating from geothermal waters—are characterised by high contrasts in facies and petrophysical properties from microscale to macroscale, and are therefore ideally suited to test the ability of non‐invasive geophysical methods to estimate such contrasts, and to develop petrophysical models based on geophysical properties. Here, a laboratory‐based study of a Pleistocene tufa mound in Spain is presented that combines (1) petrography, (2) digital 2D pore network analysis, (3) gas porosity and permeability measurements, (4) acoustic velocity measurements and (5) electromagnetic wave velocity and porosity determination from ground‐penetrating radar, to develop empirical petrophysical models. These results show the consistency of petrophysical properties determined with different methods across various observational scales. Electromagnetically derived porosity positively correlates with gas porosity. Petrophysical properties depend on measurable rock fabric parameters and the degree of cementation, which provide predictive tools for subsurface geobodies. Strongly cemented peloidal‐thrombolitic fabrics with intergranular and intercrystalline pores, and a dominance of small complex pores best transmit acoustic waves. Weak cementation and a significant fraction of large simple pores (framework, vegetation moulds) increase porosity and permeability of shrubby fabrics, while causing lower acoustic velocity. This study demonstrates that ground‐penetrating radar models can be used in combination with direct measurements of physical subsurface properties to capture highly contrasting physical properties associated with different sedimentary facies that would not be achievable with other methods, thus improving the understanding of formational processes.
Obesity in heart failure with preserved ejection fraction: Insights from the REDUCE LAP‐HF II trial
Authors: Litwin Sheldon E. , Komtebedde Jan , Seidler Tim , Borlaug Barry A. , Winkler Sebastian , Solomon Scott D. , Eicher Jean‐Christophe , Mazimba Sula , Khawash Rami , Sverdlov Aaron L. , Hummel Scott L. , Bugger Heiko , Boenner Florian , Hoendermis Elke , Cikes Maja , Demers Catherine , Silva Guillherme , van Empel Vanessa , Starling Randall C. , Penicka Martin , Cutlip Donald E. , Leon Martin B. , Kitzman Dalane W. , van Veldhuisen Dirk J. , Shah Sanjiv J. ,   the REDUCE LAP‐HF Investigators and Research Staff
Published: November 2023

AimsObesity is causally related to the development of heart failure with preserved ejection fraction (HFpEF) but complicates the diagnosis and treatment of this disorder. We aimed to determine the relationship between severity of obesity and clinical, echocardiographic and haemodynamic parameters in a large cohort of patients with documented HFpEF.Methods and resultsThe REDUCE LAP‐HF II trial randomized 626 patients with ejection fraction ≥40% and exercise pulmonary capillary wedge pressure (PCWP) ≥25 mmHg to atrial shunt or sham procedure. We tested for associations between body mass index (BMI), clinical characteristics, cardiac structural and functional abnormalities, physical limitations, quality of life and outcomes with atrial shunt therapy. Overall, 60.9% of patients had BMI ≥30 kg/m2. As the severity of obesity increased, symptoms (Kansas City Cardiomyopathy Questionnaire score) and 6‐min walk distance worsened. More severe obesity was associated with lower natriuretic peptide levels despite more cardiac remodelling, higher cardiac filling pressures, and higher cardiac output. Lower cut points for E/e′ were needed to identify elevated PCWP in more obese patients. Strain measurements in all four chambers were maintained as BMI increased. Pulmonary vascular resistance at rest and exercise decreased with higher BMI. Obesity was associated with more first and recurrent heart failure events. However, there was no significant interaction between obesity and treatment effects of the atrial shunt.ConclusionsIncreasing severity of obesity was associated with greater cardiac remodelling, higher right and left ventricular filling pressures, higher cardiac output and increased subsequent heart failure events. Despite significant obesity, many HFpEF patients have preserved right heart and pulmonary vascular function and thus, may be appropriate candidates for atrial shunt therapy.
Synthesis of Perfluoro Alkyl/Alkenyl Aryl Sulfide: C−S Coupling Reaction Using Hexafluoropropylene Dimer (HFPD) as a Building Block
Authors: An Yu , Zeng Ji‐Jun , Tang Xiao‐Bo , Zhao Bo , Han Sheng , Yang Zhi‐Qiang , Zhang Wei , Lu Jian 
Published: November 2023

AbstractEfficient approaches to perfluoroalkyl/alkenyl aryl sulfides were accomplished by a C−S coupling reaction under mild conditions. Hexafluoropropylene dimer was employed as a versatile building block for the perfluoroalkylation and perfluoroalkenylation of thiophenol. The application of the synthetic strategy was demonstrated by the high‐yield transformation of a broad range of aryl derivatives. A plausible mechanistic explanation was proposed to elaborate the differences between the two reaction pathways. The methodology provides straightforward and convenient access to aryl sulfides constituting C6 perfluoroalkyl and perfluoroalkenyl substituents.
Anti‐influenza A (H1N1) virus effect of gallic acid through inhibition of virulent protein production and association with autophagy
Authors: Chang Cheng‐Chieh , You Huey‐Ling , Su Huey‐Jen , Hung I‐Ling , Kao Chao‐Wei , Huang Sheng‐Teng 
Published: November 2023

AbstractInfluenza remains one of the most serious infectious diseases. Gallic acid is one of the most common and representative phenolic acids found in various plants. This is an interesting subject to explore how gallic acid could inhibit H1N1 influenza virus infection by reducing the production of virulent proteins and interrupting autophagy machinery for influenza virus replication on the host cell. Cellular viability was assessed by XTT assay. The inhibitory effects on the H1N1 influenza virus were assessed by hemagglutination assay, plaque assay, and qRT‐PCR. Western blot analysis was used for detecting protein levels of M1, M2, NP, LC3B, and beclin‐1. Autophagy activity was demonstrated by acridine orange staining assay. The result demonstrated that there was no cytotoxic effect of gallic acid on A549 cells, and gallic acid could restore the cellular viability of H1N1 influenza virus‐infected A549 cells within the experimental concentration treatment. Moreover, gallic acid could effectively restrain viral activity of the H1N1 influenza virus. After the treatment of gallic acid, the production of virulent H1N1 influenza virus proteins, that is, M1, M2, and NP protein were reduced. As for autophagic mechanism, both of the LC3B II conversion and the level ratio of LC3B II to LC3B I were notably decreased. The acridine orange staining assay also revealed decreased accumulation of autophagosomes in H1N1 influenza virus‐infected cells. In conclusion, gallic acid suppresses H1N1 influenza viral infectivity through restoration of autophagy pathway and inhibition of virulent M1, M2, and NP protein production.