bluuebunny/crossref_metadata_2025_split huggingface dataset:
PPy‐Derived Sandwich‐Structured Hollow Carbon Fiber Anchoring Sn4P3 as Anode Materials with Improved Na+ Storage
Authors: Wei Minghui , Wang Yarong , Li Cong , Jin Chao , Sui Jing , Yang Ruizhi 
Published: August 2019

AbstractSn4P3 has been considered as one of the promising anode materials for sodium ion batteries (SIBs) due to its high reversible capacity and low redox potential. However, the large volume expansion and Sn aggregation during the sodiation‐desodiation process result in the poor cycle stability, limiting its commercial use. Herein, a sandwich‐structured hollow carbon fiber anchoring Sn4P3 quantum dots (C@Sn4P3@HCF) is synthesized by carbon coating, carbonization/reduction and phosphorization with PPy hollow fiber as a template. Benefitting from the unique sandwiched architecture as well as the synergistic effect between Sn4P3 and N‐doped hollow carbon fiber, C@Sn4P3@HCF hybrids deliver a high initial discharge capacity of 631 mAh g−1 at 100 mA g−1, excellent rate capability (205 mAh g−1 at 50 mA g−1, 108 mAh g−1 at 1500 mA g−1) and ultrastable capacity retention of >103 mAh g−1 with a coulombic efficiency of 99.4% over 1000 cycles at 300 mA g−1. Hence, C@Sn4P3@HCF hybrids show great potential as an alternative anode material for next‐generation SIBs.
Highly Tunable Growth and Etching of Silica Shells on Surfactant‐Free Gold Nanostars
Authors: Atta Supriya , Rangan Sylvie , Fabris Laura 
Published: August 2019

AbstractHerein, we report an efficient method to coat gold nanostars with a silica shell of variable thickness and then tunably etch it by using a mild silica etching reagent, NaBH4. This method generates a novel type of nanostar coating in which silica only covers the core, leaving the tips variably exposed.
Selective Preparation of 4‐Alkylphenol from Lignin‐Derived Phenols and Raw Biomass over Magnetic Co–Fe@N‐Doped Carbon Catalysts
Authors: Liu Xiaohao , Wang Chenguang , Zhang Ying , Qiao Yan , Pan Yang , Ma Longlong 
Published: August 2019

AbstractLignin valorization to produce high‐value chemicals selectively is an enormous challenge in biorefinery. In this study, 4‐alkylphenol, formed by breaking the robust Caryl−OCH3 bonds solely with the retention of other structures in lignin‐derived methoxylalkylphenols, was produced selectively over a Co1–Fe0.1@NC catalyst from real lignin oil as feedstock, which was obtained by a “lignin‐first” strategy from either birch or cornstalk. A yield of 64.7 or 88.3 mol % of 4‐propylphenol was obtained if birch lignin oil or eugenol was used as the substrate, respectively. The catalysts were characterized by using methods that include Brunauer–Emmett–Teller measurements, XRD, X‐ray photoelectron spectroscopy, high‐resolution transmission electron microscopy, high‐angle annular dark‐field scanning transmission electron microscopy, energy‐dispersive X‐ray spectroscopy, and temperature‐programmed desorption with synchrotron vacuum ultraviolet photoionization mass spectrometry. The results of catalyst characterization and comparison experiments indicated that CoNx was the main active phase for demethoxylation and hydrogenation, and the incorporation of Fe weakens the adsorption of 4‐propylphenol to the catalyst, which inhibits the excessive hydrogenation of 4‐propylphenol. This work shows the potential to produce high‐value‐added 4‐alkylphenol from renewable raw biomass.
Iodine‐Deficient BiO1.2I0.6 Coupling with Bi2O3 for Degradation of Volatile Organic Compounds under Simulated Sunlight Irradiation
Authors: Wang Shaomang , Guan Yuan , Zeng Ruiheng , Zhang Zhijun , Liu Liang , Li Zhongyu , An Wen , Fu Yang 
Published: August 2019

AbstractA photocatalyst with a high separation efficiency of carriers is crucial for the photocatalytic efficient decomposition of volatile organic compounds (VOCs). In this work, a new iodine‐deficient BiO1.2I0.6/Bi2O3 photocatalyst was developed through a solvothermal approach coupled with thermal decomposition. The 2 wt % BiO1.2I0.6/Bi2O3 sample demonstrated optimal photocatalytic activity for the degradation of toluene, achieving a 55.1 % mineralization ratio under 8 h of irradiation, which was 14.9 and 2.1 times higher than those of BiO1.2I0.6 and Bi2O3, respectively. Compared with BiO1.2I0.6 and Bi2O3, 2 wt % BiO1.2I0.6/Bi2O3 exhibited the weakest fluorescence band, highest photocurrent density, and lowest impedance; thus suggesting that Bi2O3 compounded by 2 wt % BiO1.2I0.6 distinctly promoted the separation efficiency of carriers. The hydroxyl radical (.OH) was the main active species, apart from holes, for the photocatalytic degradation of toluene.
Enhanced CO2 Capture and Hydrogen Purification by Hydroxy Metal–Organic Framework/Polyimide Mixed Matrix Membranes
Authors: Ma Canghai , Urban Jeffrey J. 
Published: August 2019

AbstractMembrane separation technology provides substantial savings in energy and cost for molecular separations in chemical industry, ideally complementing conventional thermally driven separation approaches. However, current membranes are subject to limitations, primarily lying in the Robeson permeability–selectivity upper bound limits. In this study, hydroxy metal‐organic framework (MOF)/polyimide mixed‐matrix membranes are found to enable high separation performance for applications including CO2 capture and hydrogen purification while offering enhanced compatibility with state‐of‐the‐art membrane‐manufacturing processes. The mixed‐matrix membranes exceed the present Robeson upper bounds with H2 and CO2 permeabilities of 907 and 650 Barrers, respectively and H2/CH4 and CO2/CH4 selectivities of 45 and 32, respectively. The unparalleled performance results from intimate interactions at the boundary of the hydroxy MOFs and carboxylic polymers through strong hydrogen bonds. The principle of design opens the door to highly permeable membranes with synergistic compatibility with established membrane manufacturing platforms for energy‐efficient molecular separations.
Evaluation of impurities and dissolution profiles of illegal antimicrobial drugs encountered in Belgium
Authors: Tie Yaxin , van Loock Kevin , Deconinck Eric , Adams Erwin 
Published: August 2019

AbstractSubstandard and falsified (SF) antimicrobials are gaining popularity in both developing and developed countries, posing a growing threat to public health. In general, the evaluation of SF antimicrobial drugs mainly focuses on the identification and quantification of the pharmaceutical active ingredients, ignoring other parameters of drug quality control. This study performed an in‐depth characterization and hazard identification of suspected SF antimicrobial medicinal products encountered in Belgium. In this comprehensive evaluation, impurity tests and dissolution studies were carried out. The dissolution profiles of illegal SF antimicrobials were mathematically compared to their genuine counterparts using the f1 and f2‐factor.The results indicated that 17 out of 57 illegal samples contained higher than permitted amounts of impurities and clearly demonstrated low equivalences of dissolution profiles between SF antimicrobials and genuine products. The variations between tablets at the different time points of the dissolution curves were also higher for the SF medicines. Moreover, 11 out of 19 illegal samples failed to meet the dissolution criteria prescribed by the United States Pharmacopeia. As impurities may induce adverse reactions and improper dissolution patterns may be the cause of insufficient drug efficacy, aggravation of illness and even promotion of antimicrobial resistance can be expected.
Terrestrial contributions to Afrotropical aquatic food webs: The Congo River case
Authors: Soto David X. , Decru Eva , Snoeks Jos , Verheyen Erik , Van de Walle Lora , Bamps Jolien , Mambo Taylor , Bouillon Steven 
Published: August 2019

Abstract

Understanding the degree to which aquatic and terrestrial primary production fuel tropical aquatic food webs remains poorly understood, and quantifying the relative contributions of autochthonous and allochthonous inputs is methodologically challenging. Carbon and nitrogen stable isotope ratios (δ13C, δ15N) can provide valuable insights about contributions of terrestrial resources and trophic position, respectively, but this approach has caveats when applied in typical complex natural food webs.
Here, we used a combination of C, N, and H (δ2H) stable isotope measurements and Bayesian mixing models to estimate the contribution of terrestrial (allochthonous) and aquatic (autochthonous) inputs to fish and invertebrate communities in the Congo River (and some tributaries).
Overall, our results show that we gained power to distinguish sources by using a multiple tracer approach and we were able to discriminate aquatic versus terrestrial sources (esp. including hydrogen isotopes). Fish δ2H values were clearly correlated with their food preferences and revealed a high level of variation in the degree of allochthony in these tropical aquatic communities.
At the community level, it is clear that terrestrial C3 plants are an important source fueling the Congo River food web. However, in order to better constrain source contribution in these complex environments will require more robust constraints on stable isotope values of algal and methane‐derived C sources.
Date Pit Carbon Dots Induce Acidic Inhibition of Peroxidase and Disrupt DNA Repair in Antibacteria Resistance
Authors: Nurkesh Ayan A. , Sun Qinglei , Fan Haiyan , Dukenbayev Kanat , Tsoy Andrey , Altaikyzy Akerke , Wang Kunjie , Xie Yingqiu 
Published: August 2019

AbstractCarbon nanodots (C‐dots) are emerging as a new type of promising agent in anticancer, imaging, and new energy. Reports as well as the previous research indicate that certain C‐dots can enhance targeted cancer therapy. However, in‐depth mechanisms for such anticancer effect remain unclear. In this work, treatment provided by the date pit‐derived C‐dots, exhibits significant DNA damage; Annexin V/7‐AAD‐mediated apoptosis, and G2/M cell cycle arrest in prostate cancer cells. The application of C‐dots to the cell generally leads to acidulation of the cell medium, cooperated with membrane compact. The date pit‐derived C‐dots are observed inhibiting the horseradish peroxidase. Moreover, the C‐dots disrupt likely through nucleotide excision DNA repair at low dose during DNA ligation step suggesting the antimicrobial effect and targeting Pim‐1, EGFR, mTOR, and DNA damage pathways in cancer cells. For the first time the detailed and novel mechanisms underlying the C‐dots, derived from the date‐pit, as an efficient, low‐cost, and green nanomaterial are reveled for cancer therapy and anti‐infection.
Monocarboxylate transporter 1 in Schwann cells contributes to maintenance of sensory nerve myelination during aging
Authors: Jha Mithilesh Kumar , Lee Youngjin , Russell Katelyn A. , Yang Fang , Dastgheyb Raha M. , Deme Pragney , Ament Xanthe H. , Chen Weiran , Liu Ying , Guan Yun , Polydefkis Michael J. , Hoke Ahmet , Haughey Norman J. , Rothstein Jeffrey D. , Morrison Brett M. 
Published: August 2019

AbstractSchwann cell (SC)‐specific monocarboxylate transporter 1 (MCT1) knockout mice were generated by mating MCT1
f/f mice with myelin protein zero (P0)‐Cre mice. P0‐Cre+/−, MCT1
f/f mice have no detectable early developmental defects, but develop hypomyelination and reduced conduction velocity in sensory, but not motor, peripheral nerves during maturation and aging. Furthermore, reduced mechanical sensitivity is evident in aged P0‐Cre+/−, MCT1
f/f mice. MCT1 deletion in SCs impairs both their glycolytic and mitochondrial functions, leading to altered lipid metabolism of triacylglycerides, diacylglycerides, and sphingomyelin, decreased expression of myelin‐associated glycoprotein, and increased expression of c‐Jun and p75‐neurotrophin receptor, suggesting a regression of SCs to a less mature developmental state. Taken together, our results define the contribution of SC MCT1 to both SC metabolism and peripheral nerve maturation and aging.
Trajectories of neuropsychiatric symptoms over time in healthy volunteers and risk of MCI and dementia
Authors: Leoutsakos Jeannie‐Marie S. , Wise Elizabeth A. , Lyketsos Constantine G. , Smith Gwenn S. 
Published: August 2019

ObjectivesTo identify subtypes of neuropsychiatric symptom (NPS) course among cognitively normal individuals and to assess the association between these subtypes and hazard of later mild cognitive impairment (MCI) or dementia diagnosis.MethodsWe modeled neuropsychiatric inventory questionnaire (NPI‐Q) scores from 4184 volunteers over approximately 4 years using growth mixture models, generating latent classes of trajectory. We then fit Cox proportional hazard models to determine if membership in trajectory classes was associated with increased hazard of diagnosis of MCI or dementia.ResultsWe identified four trajectory classes: the majority of the sample (65%) would be expected to belong to a class with consistently low or zero NPS. The next most prevalent class, (16%) showed a decrease over time in NPI‐Q total score but, compared with the majority class had an almost threefold increase in hazard of MCI or dementia (HR: 2.92; 95% CI: 1.82‐4.68). Another class (14%) showed an increase in NPS over time and was also associated with greater hazard of MCI or dementia (HR: 3.96; CI: 2.61‐6.03). The smallest class (5%) had high and fluctuating NPI‐Q total scores and had the greatest hazard (HR: 4.57; CI: 2.72‐7.63).ConclusionWe have demonstrated that it is possible to identify meaningful groups of NPS trajectories and that trajectory of NPS can convey information beyond a single cross‐sectional measure. While even those whose NPS improved were at increased hazard of MCI or dementia, hazard increased as a function of the severity of the NPS trajectory.
Improvements of building envelope using passive cooling techniques to reduce the cooling load in hot‐dry regions
Authors: Hussein Mustafa K. 
Published: August 2019

AbstractIn developed countries, the buildings are responsible for massive energy consumption. When the construction is based on the use of nonsustainable methods, the buildings were dependent on the active systems, for ensuring a maximal indoor comfort. This has increased energy consumption and related greenhouse gas emissions. In this study, a reduction technique of cooling load and power consumption in buildings is proposed. This technique involves the combination of three passive cooling techniques, thermal insulation, phase change materials (PCMs), and electrochromic double glazing. These techniques are applied through simulation software “DesignBuilder” to a building envelope model in various areas like walls, roofs, and glazing. For this purpose, a standard building model is compared with 16 other cases that incorporated the passive cooling techniques for determining the effectiveness of the proposed method. The results show that a combination of PCMs, thermal insulation, and double glazing can reduce the cooling load from 70.37 to 50.53 kW and the energy consumption from 1.51 to 0.90 kWh/m
2.
What influences a bank's decision to go public?
Authors: Sermpinis Georgios , Tsoukas Serafeim , Zhang Ping 
Published: August 2019

AbstractA bank's decision to go public by issuing an Initial Public Offering (IPO) transforms its operations and capital structure. Much of the empirical investigation in this area focuses on the determinants of the IPO decision, applying accounting ratios and other publicly available information in nonlinear models. We mark a break with this literature by offering methodological extensions and an extensive and updated U.S. dataset to predict bank IPOs. Combining the least absolute shrinkage and selection operator with a Cox proportional hazard, we uncover value in several financial factors as well as market‐driven and macroeconomic variables in predicting a bank's decision to go public. Importantly, we document a significant improvement in the model's predictive ability compared with standard frameworks used in the literature. Finally, we show that the sensitivity of a bank's IPO to financial characteristics is higher during periods of global financial crisis than in calmer times.
Space‐confined microwave synthesis of ternary‐layered BiOCl crystals with high‐performance ultraviolet photodetection
Authors: Kang Lixing , Yu Xuechao , Zhao Xiaoxu , Ouyang Qingling , Di Jun , Xu Manzhang , Tian Dan , Gan Weiliang , Ang Calvin C. I. , Ning Shoucong , Fu Qundong , Zhou Jiadong , Kutty R. G. , Deng Ya , Song Pin , Zeng Qingsheng , Pennycook Stephen J. , Shen Jun , Yong Ken‐T. , Liu Zheng 
Published: August 2019

AbstractIn recent years, two‐dimensional (2D) ternary materials have attracted wide attention due to their novel properties which can be achieved by regulating their chemical composition with a very great degree of freedom and adjustable space. However, as for the precise synthesis of 2D ternary materials, great challenges still lie ahead that hinder their further development. In this work, we demonstrated a simple and reliable approach to synthesize 2D ternary‐layered BiOCl crystals through a microwave‐assisted space‐confined process in a short time (<3 minutes). Their ultraviolet (UV) detection performance was analyzed systematically. The photodetectors based on the as‐obtained BiOCl platelets demonstrate high sensitivity to 266‐nm laser illumination. The responsivity is calculated to be ∼8 A/W and the response time is up to be ∼18 ps. On the other hand, the device is quite stable after being exposed in the ambient air within 3 weeks and the response is almost unchanged during the measurement. The facile and fast synthesis of single crystalline BiOCl platelets and its high sensitivity to UV light irradiation indicate the potential optoelectronic applications of 2D BiOCl photodetectors.image
Skin and subcutaneous fat morphology alterations under the LED or laser treatment in rats in vivo
Authors: Yanina Irina Y. , Navolokin Nikita A. , Bucharskaya Alla B. , Мaslyakova Galina N. , Tuchin Valery V. 
Published: August 2019

AbstractThe main objective of this work is to quantify the impact of photodynamic/photothermal treatment by using visible LED and NIR laser irradiation through the skin of subcutaneous fat in vivo followed up by tissue sampling and histology. The optical method may provide reduction of regional or site‐specific accumulations of abdominal or subcutaneous adipose tissue precisely and least‐invasively by inducing cell apoptosis and controlled necrosis of fat tissue. As photodynamic/photothermal adipose tissue sensitizers Brilliant Green (BG) or Indocyanine Green (ICG) dyes were injected subcutaneously in rats. The CW LED device (625 nm) or CW diode laser (808 nm) were used as light sources, respectively. Biopsies of skin together with subcutaneous tissues were taken for histology. The combined action BG‐staining and LED‐irradiation (BG + LED) or ICG‐staining and NIR‐laser irradiation (ICG + NIR) causes pronounced signs of damage of adipose tissue characterized by a strong stretching, thinning, folding and undulating of cell membranes and appearance of necrotic areas. As a posttreatment after 14 days only connective tissue was observed at the site of necrotic areas. The data obtained are important for safe light treatment of site‐specific fat accumulations, including cellulite. This work provides a basis for the development of fat lipolysis technologies and to move them to clinical applications. Schematics of animal experiment.
Transformation of the dermal collagen framework under laser heating
Authors: Ignatieva Natalia , Zakharkina Olga , Dadasheva Aygun , Shekhter Anatoly , Sviridov Alexander , Lunin Valery 
Published: August 2019

AbstractThe aim of this study was to compare between the changes undergone by the dermal collagen framework when heated by IR laser radiation and by traditional means and to reveal the specific features of the dermal matrix modification under moderate IR laser irradiation. Rabbit skin specimens were heated to 50°C, 55°C, 60°C and 65°C in a calorimeter furnace and with a 1.68‐μm fiber Raman laser. The proportion of the degraded collagen macromolecules was determined by differential scanning calorimetry. Changes in the architectonics of the collagen framework were revealed by using standard, phase‐contrast, polarization optical and scanning electron microscopy techniques. The collagen denaturation and dermal matrix amorphization temperature in the case of laser heating proved to be lower by 10°C than that for heating in the calorimeter furnace. The IR laser treatment of the skin was found to cause a specific low‐temperature (45°C‐50°C) transformation of its collagen framework, with some collagen macromolecules remaining intact. The transformation reduces to the splitting of collagen bundles and distortion of the course of collagen fibers. The denaturation of collagen macromolecules in the case of traditional heating takes its course in a threshold manner, so that their pre‐denaturation morphological changes are insignificant.
The effects of zingerone against vancomycin‐induced lung, liver, kidney and testis toxicity in rats: The behavior of some metabolic enzymes
Authors: Çağlayan Cüneyt , Taslimi Parham , Demir Yeliz , Küçükler Sefa , Kandemir Fatih Mehmet , Gulçin İlhami 
Published: August 2019

AbstractIn this study, it was demonstrated the ameliorative effect of zingerone (ZO) (25 and 50 mg/kg body weight) against vancomycin (VCM) (200 mg/kg body weight) administered to rats on some metabolic enzymes’ activities in the lung, liver, kidney, and testis tissues of rats. Forty‐two rats were divided into six groups as follows: control, ZO‐25, ZO‐50, VCM, VCM + ZO‐25, and VCM + ZO‐50. α‐Glycosidase, butyrylcholinesterase, aldose reductase, acetylcholinesterase, paraoxonase‐1, and carbonic anhydrase enzyme activities were significantly (P < .05) decreased in VCM group when compared with the control group. ZO, supplied with VCM, significantly activated some of these enzyme in all tissues. The results of this study showed that ZO regulates abnormal increases and decreases in VCM‐induced metabolic enzyme activities in all tissues.
Curcumin synergistically potentiates the protective effect of sitagliptin against chronic deltamethrin nephrotoxicity in rats: Impact on pro‐inflammatory cytokines and Nrf2/Ho‐1 pathway
Authors: Shi Wenbin , Zhang Daisong , Wang Lei , Sreeharsha Nagaraja , Ning Yushan 
Published: August 2019

AbstractDeltamethrin (DLM) is a synthesized organophosphorus acaricide and bug spray, broadly utilized for veterinary and farming purposes. Although its exposure to humans and animals causes toxicity in the kidney and other primary organs, our objective was to assess the defensive effects of sitagliptin (Sita) and additionally curcumin (Cur) in the DLM‐intoxicated rats’ kidney. DLM‐intoxicated rats revealed a huge increase of various biochemical parameters in serum identified with kidney damage: uric acid, urea, and creatinine. DLM intoxication altogether increased renal lipid peroxidation, and critically restrained antioxidative biomarkers including superoxide dismutase, glutathione, and glutathione peroxidase. Likewise, it increased the tumor necrosis factor‐α, interleukin 6 (IL‐6) and IL‐1β level in serum. Additionally, DLM intoxication diminished the outflow of the nuclear factor (erythroid‐derived 2)‐like 2 (Nrf2)/heme oxygenase‐1 (HO‐1) pathway in rats. Both Sita and Cur act against DLM‐prompted serum along with renal tissue biochemical parameters when utilized alone or in a mix alongside DLM intoxication. Besides this, both Sita and Cur delivered synergetic nephroprotective, antioxidative, and anti‐inflammatory impacts. Consequently, it could be presumed that Sita as well as Cur administration can limit the poisonous impacts of DLM by their free radical‐scavenging, strong antioxidant, and Nrf2/HO‐1 pathway upregulation activity.