bluuebunny/crossref_metadata_2025_split huggingface dataset:
A study on microwave absorption properties of polyaniline/nitrile rubber/graphene/Fe3O4 composites with a thickness of 0.7 mm and high flexibility
Authors: Rezazadeh Nader , Kianvash Abbas , Zhao Chao , Koh Amanda 
Published: April 2023

AbstractThe genotoxic effect of microwave radiation on humans is one of the leading causes of some diseases like cancer. Despite many reported materials for microwave absorption, there is still a demand for a super‐thin and flexible microwave absorber. In the present work, we synthesized Fe3O4/graphene/polyaniline/nitrile butadiene rubber composites with a thickness of 0.7 mm using a melt mixing method. Then, we comprehensively studied the electromagnetic and microwave absorption properties of the composites from 8 to 12 GHz. The composite with 38 wt% Fe3O4 and 6 wt% graphene exhibited the highest microwave absorption of more than 8 dB in the entire range of 8–12 GHz, with a minimum reflection loss of −14 dB at 10.3 GHz. By increasing the weight content of Fe3O4 and graphene, the imaginary part of dielectric permeability and magnetic permeability initially went up and then declined, resulting in poor impedance matching. Hence, we precisely controlled the weight content of the fillers to reach the highest impedance matching and attenuation constant. Consequently, this work opened up a unique way for developing super‐thin, lightweight, flexible microwave‐absorbing materials.
Pilot‐scale demonstration of novel tandem coating process: Combining dispersion and extrusion coating with enhanced barrier properties
Authors: Toriseva Juuso , Lahti Johanna , Kuusipalo Jurkka 
Published: April 2023

AbstractIncreasing environmental and legislative demands have accelerated the development of new packaging materials and processes toward more sustainable alternatives. Furthermore, barrier properties of the packaging have become increasingly important, as food waste creates environmental problems. Nowadays, multilayer structures are typically used to create required barrier properties to the packages. The aim of the study was to combine dispersion and extrusion coating into consecutive tandem process to produce two‐layer structure with enhanced barrier properties. By combining two processing steps into one, time and resources are saved. The study presents demonstration of the tandem coating in pilot‐scale. The process was tested with several different materials and combinations and the processing conditions were optimized to produce optimal layer structure and properties. The properties of samples were analyzed with microscopy imaging, pinhole measurement and barrier measurements including oxygen, water vapor and grease permeation. Single layer of dispersion coatings could not produce continuous film, but the extrusion coatings filled the pinholes and enabled low permeation values. The permeabilities of the tandem coated structures were promising and generally lower than the sum of two individual layers. Moreover, the tandem coated structures produced with sustainable alternatives, performed better than traditional materials in oxygen and grease permeation measurements.
Fabrication of b‐Oriented MFI Zeolite Membranes by a Printing‐Transfer Seed Layer Procedure
Authors: Yang Yanwei , Lu Xiaofei , Zhang Huayu , Yu Xingtong , Zheng Qiancheng , Wang Zhengbao 
Published: April 2023

AbstractHighly b‐oriented MFI zeolite (abbreviated as BOMZ) membranes are attractive due to less grain boundary defects and straight channels normal to the substrate, enhancing selectivity and flux in membrane separation. Herein, we demonstrate a novel, effective and easily‐amplified printing‐transfer oriented‐seed‐layer technique to manufacture uniform BOMZ seed monolayer on porous supports. Furthermore, a facile and effective approach for the synthesis of highly BOMZ membranes by introducing poly(hexamethylene biguanide) hydrochloride as a twin crystal inhibitor during seeded growth is demonstrated. Well‐intergrown BOMZ membranes (∼650 nm thick) obtained on porous Al2O3 supports show a flux of 2.8 kg m−2 h−1 with a separation factor as high as 71 for pervaporation in the 60 °C feed of EtOH/H2O (5 wt%), which is much higher than those of random membranes. The developed seed assembly technique on porous supports underlines great potential for facile preparation of oriented seed layers on porous supports.
Uniform pricing and subsidy coordination mechanism in a two‐tier healthcare system under a co‐payment policy
Authors: Chen Wuhua 
Published: April 2023

AbstractRecently, the lengthy waiting time in public hospitals (called the public system) under the free healthcare policy has become a serious problem. To address this issue, motivated by the Japanese healthcare system, this paper investigates a two‐tier co‐payment healthcare system under a uniform pricing and subsidy coordination mechanism. In such a setting, the public system and the private system (i.e., the private hospitals) compete for market share with different objectives, whereas the government uniformly sets the service price and the subsidy rate to maximize social welfare under a total budget constraint. Compared with two free healthcare policy cases implemented in the Canadian and Australian healthcare systems respectively in terms of social welfare, the results show that when the market demand (or the patient service quality sensitivity) is sufficiently high (sufficiently low), the uniform pricing and subsidy coordination mechanism is better and worse otherwise; and when the patient's waiting sensitivity (or the total government budget) is in an appropriate middle range (sufficiently low or high), the mechanism can outperform than the free policy cases.
Proxy quality control of biomass particles using thermogravimetric analysis and Gaussian process regression models
Authors: Watts Jordan , Potter Adam , Mohan Vidyut , Kumari Pratima , Thengane Sonal K. , Sokhansanj Shahabaddine , Cao Yankai , Kung Kevin S. 
Published: April 2023

AbstractThe temperature experienced by reactants during preparation in a reactor is a key component in determining the yield and homogeneity of usable chemical products such as biomass particles. Thermocouples with sensors can be used to monitor spatial temperature gradients within reactors but these sensors are often too expensive and/or invasive. The present work proposes a strategy to identify optimal machine learning models to infer the maximum effective temperature experienced by particles during oxidative biomass torrefaction using key thermochemical combustion parameters. The maximum rate of weight loss, the corresponding temperature, and fixed carbon content on a dry‐ash‐free basis are used as literature‐based predictor variables obtained from thermogravimetric analysis. The evaluation of 24 machine‐learning models using the standard tenfold cross‐validation method suggests that the exponential Gaussian process regression (GPR) model is the most effective, followed by other GPR models. These high‐performing GPR models were also utilized to predict the effective preparation temperature distribution of reactor‐produced biomass particles under eight conditions of varying residence time and air‐to‐biomass ratio. The effective preparation temperature and residence time of individual biomass particles were then encoded into the torrefaction severity factor and used to estimate the energy yield of the reactor output as a novel quality control method. © 2023 The Authors.Biofuels, Bioproducts and Biorefiningpublished by Society of Industrial Chemistry and John Wiley & Sons Ltd.
A governance approach to stakeholder engagement in sustainable enterprises—Evidence from B Corps
Authors: She Chaoyuan , Michelon Giovanna 
Published: April 2023

AbstractSustainable enterprises face a risk for which the pressure over financial sustainability “crowds out” their impact mission. Corporate governance mechanisms can play an important role in managing the tensions between the two objectives, by steering and driving stakeholder engagement processes. At the same time, the rise of social media has provided firms with a platform for undertaking stakeholder engagement on a large scale. Therefore, the aim of this study is to examine how the governance mechanisms of sustainable enterprises affect engagement with stakeholders on social media. Specifically, we identify three distinctive mechanisms for a governance approach to stakeholder engagement in sustainable enterprises: The legal purpose beyond profit maximization, directors' commitment to purpose, and the adoption of purpose‐specific accountability mechanisms. We argue that each of them matters for the extent to which sustainable enterprises engage with stakeholders on social media, as well as the quality of this engagement. By scraping and classifying nonfinancial tweets posted by 1074 U.S. B Corps between 2014 and 2018 and those posted by stakeholders towards the firm, we find that the legal and ethical mechanisms are positively related to the quality of engagement while the accountability mechanism is related to both the extent and quality of engagement. Our study sheds light on the implications of governance mechanisms in steering social media stakeholder engagement in sustainable enterprises.
Chemotaxonomic Differentiation of Pinus Species Based on n‐Alkane and Long‐Chain Alcohol Profiles of Needle Cuticular Waxes
Authors: João Gaspar Maria , Nunes Juliana , Rodrigues Miguel , Ferreira Luis 
Published: April 2023

Abstractn‐Alkane and long‐chain alcohol (LCOH) profiles of needle cuticular waxes of nine provenances of three Pinus species (P. taeda. P. pinaster and P. pinea) were determined and their chemotaxonomic importance was studied. n‐Alkanes concentrations were very low in all Pinus spp. A lack of ability of these compounds to differentiate Pinus spp. and their provenances was observed. LCOH concentrations were much higher, being nonacosan‐10‐ol (10‐C29‐OH) the most abundant one in all Pinus spp. Total LCOH concentrations varied (P<0.001) between Pinus spp. with P. taeda presenting the highest (P<0.05) value and P. pinea the lowest one. Differences in LCOH profiles were large (P<0.001) and allowed separation of Pinus spp. in the Principal Component Analysis (PCA). Although a noticeable separation of individuals was not observed. cluster analysis on LCOH concentrations allowed a clear distinction between species, indicating their potential to be used as chemotaxonomic markers to differentiate provenances of different Pinus spp.
A unique case of high‐grade myofibroblastic sarcoma initially presenting with oral symptoms
Authors: Harada Takeshi , Togawa Takeshi , Miyamoto Hiroki , Matsushita Yutaka , Hatachi Yukimasa 
Published: April 2023

AbstractHigh‐grade myofibroblastic sarcoma is a rare mesenchymal tumor with a high recurrence and metastatic rate. Few cases of high‐grade myofibroblastic sarcomas have been reported. Herein, we report a rare case of undifferentiated, high‐grade myofibroblastic sarcoma with an unclear primary site, initially presenting with oral symptoms. High‐grade myofibroblastic sarcoma was diagnosed following an excisional biopsy of a gingival tumor. After this excisional biopsy, systemic imaging revealed multiple metastases in the tonsil, lung, liver, kidney, and eye. The patient underwent two cycles of chemotherapy (doxorubicin). During follow‐up, the tumor progressed rapidly and metastasized to the skin of the head and neck. The patient expired three months after the initial examination.
High‐Performance Mn2O3‐Na2WO4/SiO2‐TiO2 Catalyst for the Oxidative Coupling of Methane: TiO2‐Modulated MnTiO3 Formation for Enhanced Low‐Temperature Performance
Authors: Zhang Qiaofei , Wang Jifen , Wang Lijun , Wang Pengwei 
Published: April 2023

AbstractAs a direct conversion route for the production of ethylene from methane, the oxidative coupling of methane (OCM) is highly promising. The Mn2O3‐Na2WO4/SiO2 catalyst doped with 44 μm anatase‐TiO2, consisting of 5 wt% TiO2, 5 wt% Mn2O3, 8 wt% Na2WO4 and balance SiO2 was prepared, achieving ∼22 % CH4 conversion with ∼72 % selectivity towards C2−C3 hydrocarbons even at the relatively low temperature of 700 °C. This catalyst was found to run stably for at least 300 h without signs of deactivation, which provides promising and comparable low‐temperature activity and selectivity but a more cost‐effective alternative to the previously‐reported Mn2O3‐Na2WO4/Ti‐MWW catalyst containing expensive Ti‐MWW zeolite. XRD and Raman analyses revealed that the in situ formation of MnTiO3 in the TiO2‐doped catalyst is responsible for the gains in low‐temperature OCM activity. In addition, TPR and TPO results also indicated that MnTiO3 activates O2 more readily at ∼650 °C, while three‐step switchover experiments clearly demonstrated that MnTiO3 could trigger facile redox behavior at low reaction temperatures. Thus, the MnTiO3‐induced redox cycle for O2 activation enables this TiO2‐doped catalyst to provide superior CH4 conversion at 700 °C.
Ni‐Catalyzed Photochemical C−N Coupling of Amides with (Hetero)aryl Chlorides
Authors: Song Geyang , Li Qi , Nong Ding‐Zhan , Song Jiameng , Li Gang , Wang Chao , Xiao Jianliang , Xue Dong 
Published: April 2023

AbstractThis paper reports a photochemical C−N coupling of abundant, but less reactive aryl chlorides, with structurally diverse primary and secondary amides by Ni‐mediated without an external photocatalyst. Under the irradiation of light (390–395 nm) with a soluble organic amine as the base, the reaction allows for the successful transformation of (hetero)aryl chlorides to a wide range of N‐aryl amides. More than 60 examples are shown, demonstrating the feasibility and applicability of this protocol in organic synthesis. Mechanic studies indicate that this amidation proceeds via a Ni(I)‐Ni(III) catalytic cycle.
Remote Electronic Effect of Chiral N‐Heterocyclic Carbene Catalyst on an Asymmetric Benzoin Reaction
Authors: Inokuma Tsubasa , Hashimoto Kentaro , Fujiwara Tatsuya , Sun Chunzhao , Kuwano Satoru , Yamada Ken‐ichi 
Published: April 2023

AbstractA remote electronic effect of chiral aminoindanol‐derived N‐heterocyclic carbene catalyst on an asymmetric benzoin reaction was investigated. The catalyst bearing remote electron‐withdrawing substituents increased enantioselectivity of the reaction at the cost of the reaction rate. DFT calculations rationalized the increased enantioselectivity.
Modulating the Shape of Short Metal‐Mediated Heteroleptic Tapes of Porphyrins
Authors: Vidal Alessio , Rossato Daniel , Iengo Elisabetta , Balducci Gabriele , Alessio Enzo 
Published: April 2023

AbstractIn view of developing artificial light‐responsive complex systems, the preparation of discrete and robust heteroleptic assemblies of different chromophores in precisely defined positions is of great value since they would allow to investigate directional processes unavailable in symmetrical architectures. Here we describe the preparation, through a modular stepwise approach, and characterization of four novel and robust metal‐mediated heteroleptic 4+3 porphyrin tapes, labeled D4−T4−D4, D3−T4−D3, D4−T3−D4, and D3−T3−D3, where a central meso‐tetrapyridylporphyrin (either 3′‐TPyP=T3 or 4′‐TPyP=T4) is connected to two equal cis‐dipyridylporphyrins (either 3′cisDPyMP=D3 or 4′cisDPyMP=D4) through four {t,c,c‐RuCl2(CO)2} fragments. Whereas D4−T4−D4 is flat, the tapes containing at least one 3′PyP, i. e. D3−T4−D3, D4−T3−D4, and D3−T3−D3, have unprecedented – and well defined – 3D geometries, and each exists in solution as a pair of stereoisomers in slow conformational equilibrium. The X‐ray molecular structures of two such conformers, the C‐shaped (D3−T4−D3)C and the z‐shaped (D4−T3−D4)z, were determined and are fully consistent with the solution NMR findings.
Sunlight Induced and Alternative Sc(OTf)3 Catalyzed Remote C−H Halogenation of Indoles
Authors: Liu Shanshan , Zhou Xianying , Jiao Lin‐Yu , Li Chao , Wang Zheng 
Published: April 2023

AbstractA mild and catalyst‐free sunlight induced protocol for the remote meta bromination of electron‐deficient indoles is described for the first time. Herein, N‐bromosaccharin is activated by sunlight irradiation. Alternately, a synergistic activation model (Sc(OTf)3/HFIP) has also been developed for the activation of haloniums, complementary to the light induced strategy. In addition, the cascade C6‐H bromination and benzylic C−H oxidation under photocatalytic conditions was also discussed. High regio‐and chem‐selectivity, mild reaction conditions, and scalability demonstrate great potential of the developed methods in practical applications and further functionalization.
Influence of depression on breast cancer treatment and survival: A Kentucky population‐based study
Authors: Lei Feitong , Vanderpool Robin C. , McLouth Laurie E. , Romond Edward H. , Chen Quan , Durbin Eric B. , Tucker Thomas C. , Tai Eric , Huang Bin 
Published: April 2023

AbstractBackgroundDepression is common among breast cancer patients and can affect concordance with guideline‐recommended treatment plans. Yet, the impact of depression on cancer treatment and survival is understudied, particularly in relation to the timing of the depression diagnosis.MethodsThe Kentucky Cancer Registry data was used to identify female patients diagnosed with primary invasive breast cancer who were 20 years of age or older in 2007–2011. Patients were classified as having no depression, depression pre‐cancer diagnosis only, depression post‐ cancer diagnosis only, or persistent depression. The impact of depression on receiving guideline‐recommended treatment and survival was examined using multivariable logistic regression and Cox regression, respectively.ResultsOf 6054 eligible patients, 4.1%, 3.7%, and 6.2% patients had persistent depression, depression pre‐diagnosis only, and depression post‐diagnosis only, respectively. A total of 1770 (29.2%) patients did not receive guideline‐recommended cancer treatment. Compared to patients with no depression, the odds of receiving guideline‐recommended treatment were decreased in patients with depression pre‐diagnosis only (odds ratio [OR], 0.75; 95% confidence interval [CI], 0.54–1.04) but not in patients with post‐diagnosis only or persistent depression. Depression post‐diagnosis only (hazard ratio, 1.51; 95% CI, 1.24–1.83) and depression pre‐diagnosis only (hazard ratio, 1.26; 95% CI, 0.99–1.59) were associated with worse survival. No significant difference in survival was found between patients with persistent depression and patients with no depression (p > .05).ConclusionsNeglecting depression management after a breast cancer diagnosis may result in poorer cancer treatment concordance and worse survival. Early detection and consistent management of depression is critical in improving patient survival.
Ultrafast Photophysics of Regioisomeric Triphenylamine Dyes Having Dipolar D‐π‐A‐A and Octupolar D‐(π‐A‐A)3 Character with a Benzothiazole Unit in Matched or Mismatched Orientation
Authors: Petropoulos Vasilis , Georgoulis Ioannis , Vourdaki Chrisovalantou , Hrobárik Peter , Sigmundová Ivica , Nociarová Jela , Maiuri Margherita , Cerullo Giulio , Fakis Mihalis 
Published: April 2023

AbstractBenzothiazole is among prominent electron‐withdrawing heteroarene moieties used in a variety of π‐conjugated molecules. Its relative orientation with respect to the principal dipole vector(s) of chromophores derived thereof is crucial, affecting photophysical and nonlinear optical properties. Here we compare the photophysics and ultrafast dynamics of dipolar and octupolar molecules comprising a triphenylamine electron‐donating core, ethynylene π‐conjugated linker(s) and benzothiazole acceptor(s) having the matched or mismatched orientation (with respect to the direction of intramolecular charge transfer), while a carbaldehyde group is attached as an auxiliary acceptor. Among chromophores without the auxiliary acceptor, stronger fluorescence solvatochromism and faster excited state dynamics are exhibited for the derivatives with the mismatched geometry. On the contrary, introduction of the auxiliary acceptor to the benzothiazole unit enhances the intramolecular charge transfer ICT (featuring ultrafast dynamics of the excited state) for the matched geometry. The data confirm the crucial role of the relative orientation of asymmetric heteroaromatic unit (regioisomeric effect) in dipolar as well as in multipolar molecules in tuning linear and nonlinear optical properties as well as excited state dynamics.
Reentrant 2D Nanostructured Liquid Crystals by Competition between Molecular Packing and Conformation: Potential Design for Multistep Switching of Ionic Conductivity
Authors: Hamaguchi Kazuma , Lu Huanjun , Okamura Shota , Kajiyama Satoshi , Uchida Junya , Sato Shunsuke , Watanabe Go , Ishii Yoshiki , Washizu Hitoshi , Ungar Goran , Kato Takashi 
Published: April 2023

AbstractThe front cover artwork is provided by Takashi Kato at the University of Tokyo. The image shows three assembled structures of smectic liquid crystals that show reentrant behavior. Read the full text of the Research Article at 10.1002/cphc.202200927.
Heritability Estimation Approaches Utilizing Genome‐Wide Data
Authors: Srivastava Amit K. , Williams Scott M. , Zhang Ge 
Published: April 2023

AbstractPrior to the development of genome‐wide arrays and whole genome sequencing technologies, heritability estimation mainly relied on the study of related individuals. Over the past decade, various approaches have been developed to estimate SNP‐based narrow‐sense heritability () in unrelated individuals. These latter approaches use either individual‐level genetic variations or summary results from genome‐wide association studies (GWAS). Recently, several studies compared these approaches using extensive simulations and empirical datasets. However, sparse information on hands‐on training necessitates revisiting these approaches from the perspective of a stepwise guide for practical applications. Here, we provide an overview of the commonly used SNP‐heritability estimation approaches utilizing genome‐wide array, imputed or whole genome data from unrelated individuals, or summary results. We not only discuss these approaches based on their statistical concepts, utility, advantages, and limitations, but also provide step‐by‐step protocols to apply these approaches. For illustration purposes, we estimate of height and BMI utilizing individual‐level data from The Northern Finland Birth Cohort (NFBC) and summary results from the Genetic Investigation of ANthropometric Traits (GIANT;) consortium. We present this review as a template for the researchers who estimate and use heritability in their studies and as a reference for geneticists who develop or extend heritability estimation approaches. © 2023 The Authors. Current Protocols published by Wiley Periodicals LLC.Basic Protocol 1: GREML (GCTA)Alternate Protocol 1: Stratified GREMLBasic Protocol 2: LDAKAlternate Protocol 2: Stratified LDAKBasic Protocol 3: Threshold GREMLBasic Protocol 4: LD score (LDSC) regressionBasic Protocol 5: SumHer