bluuebunny/crossref_metadata_2025_split huggingface dataset:
Étude des substitutions Al-Fe dans des roches latéritiques
Authors: Janot Christian , Gibert Huguette , Gramont Xavier de , Blais Régine 
Published: April 2019

The mineralogical structure of lateritic materials has been studied by X-ray diffraction, thermal analysis and, on the other hand, by Mössbauer effect.
The writers were able by comparing the results obtained by these different techniques, to prove the existence of mixed aluminium-iron oxides and hydroxides frequently extremely divided.
A relationship was noted between the presence of these compounds and the insolubility of a part of the alumina contained in these lateritic rocks when using the Bayer process.
The non extracted alumina would be either substituted for iron in crystallized oxides and hydroxides like aluminous goethite, aluminous haematite and ferruginous corundum or in the form of corundum.
Composition des minéraux et évolution des phases fluides : le cas des filons polymétalliques d'Aïn Barbar (Algérie)
Authors: Marignac Christian 
Published: April 2019

Les filons d'Ain Barbar résultent du fonctionnement d'un système géothermique d'âge langhien. Ils montrent une succession de stades et d'épisodes de minéralisation rythmés par les fracturations : stade précoce à chlorite-épidote ; stade principal à sulfures (épisodes à sphalérite, de silicification, à chalcopyrite 1 et 2) ; stades tardifs à carbonates-pyrite, quartz-arsénopyrite, etc. L'étude des inclusions fluides indique une évolution à basse pression (130 à 80 bars), avec des températures comprises entre 320 °C (dépôt de la chalcopyrite) et 180 °C (fin des stades tardifs).
Les variations de la composition des phases minérales enregistrent celles de nombreux paramètres caractéristiques des phases fluides à différentes échelles d'espace et de temps :
— à long terme, les chlorites montrent la décroissance de la température (variations des teneurs en AlIV et en lacunes) et une diminution du pH (augmentation de XFe) ; sphalérites et arsénopyrites indiquent des changements de fS2 correspondant à une transition entre des fluides en équilibre avec la pyrrhotite et des fluides en équilibre avec la pyrite. Il s'agit là de l'évolution générale du système géothermique.
— des phénomènes oxydants transitoires sont attestés par la minéralogie (paragenèses à hématite ou à magnétite) et par l'apparition d'épidotes ferrifères (Xps = 0,33) ; ils reflètent probablement l'existence de phénomènes d'ébullition dans les réservoirs profonds.
— à court terme, la zonation des épidotes, des chlorites, des arsénopyrites, et des adulaires, montre l'existence de fluctuations parfois importantes de paramètres comme la température (sur 10° à 20 °C), le pH, fS2 (sur 1 à 2 unités log) ou fO2 (sur 2 à 3 unités log), et qui prennent souvent la forme d'oscillations ; ces phénomènes traduisent la micro-évolution des remplissages filoniens, marquée par des alternances d'ouverture avec influx de fluide "frais" portant l'empreinte de la zone source ; et de colmatage avec stagnation des fluides et rééquilibrage avec l'encaissant.
Body composition and venison quality of farmed red deer (&lt;i&gt;Cervus elaphus&lt;/i&gt;) hinds reared on grass, &lt;i&gt;papilionaceous&lt;/i&gt; or mixed pasture paddocks
Authors: Nagy János , Szabó András , Donkó Tamás , Bokor Julianna , Romvári Róbert , Repa Imre , Horn Péter , Fébel Hedvig 
Published: April 2019

Abstract. Red deer (Cervus elaphus) hinds (n=3×10) of identical initial body weight (BW, ca. 68 kg) were reared on a monocotyledonous grass (G group), on a grass–papilionaceous (GP group) or on pure papilionaceous pasture each of 2 ha (P group) for 219 d. At the end of the experiment carcass tissue composition was assessed by means of computer tomography, slaughter value and meat quality were characterized and tissue – longissimus thoracis et lumborum (LTL), thigh and liver – samples were taken for fatty acid composition analysis. The primary aim was to assess nutrition-driven differences. Hinds of group P provided higher final BW (101 kg vs. 90 and 91.9 kg in groups G and GP, respectively) and higher BW gain (32.6 kg during the total period vs. 22.4 and 22.1 kg). The carcass weight exceeded those of the other groups significantly (68.8 kg vs. 59.3 and 63.2 kg), while there was no difference among groups in the perirenal fat weight and red color tone (a*) of the LTL. Groups G and P differed significantly in the LTL weight (highest in P), its dripping loss (lowest in G), lightness (L; highest in P) and yellow color tone (b*). In the thigh muscle, LTL and liver the highest proportion of fatty acid CLA9c11t was reached on the G pasture, and the same trend was true for docosahexaenoic acid (DHA , C22:6 n3) in the muscles. The n6 ∕ n3 fatty acid ratio was the highest on the P pasture in the liver and both muscles. The liver incorporated the highest proportion of linoleic acid (C18:2 n6) and converted it rather effectively to arachidonic acid (C20:4 n6), coupled with the lowest α-linolenic acid presence. In conclusion, concerning muscle mass production, group P proved to be the most advantageous pasture; meanwhile LTL meat quality factors (dripping loss, DHA proportion, pH, color) were more favorable on the G pasture.
Pocahontas Looks Back and Then Looks Elsewhere: The Entangled Gaze in Contemporary Indigenous Art
Authors: Siebert Monika 
Published: April 2019

Abstract
In the late twentieth and early twenty-first centuries, various genres of visual art in North America feature Indigenous subjects looking from the canvas or the screen at the viewers to interpellate them as implicated in the gaze framing the artwork. In this article, I provide an historical genealogy of this returned gaze, starting with Simon van de Passe's 1616 engraving, Matoaka als Lady Rebecca. I show how subsequent depictions of Pocahontas depart from the reciprocal gaze of Van de Passe's portrait and how contemporary art returns to this theme of the returned gaze, using Shelley Niro's video work The Shirt (2003) as an example. The Shirt deploys the returned gaze as an indictment of settler colonialism in North America yet frets that this kind of indictment becomes too easily co-opted as the familiar trope of the Indian complaint, its public circulation strengthening the multiculturalist credentials of North American democracies. So Niro frames The Shirt with two momentary gestures of willful looking away from the camera, to some unrepresented elsewhere, thus reconfiguring the entangled gaze of contemporary North American art. The looking elsewhere bypasses the scopic regime that endows the viewer with mastery while it reduces the Indigenous subject to the object of this masterful gaze. Further, it implies a political and social space of privacy and agency that does not have to be made transparent and accessible for the benefit of the settler viewer's enlightenment. The Shirt makes clear, however, that such an attempt is paradoxical: the looking elsewhere reconfigures the dominant gaze but remains entangled with it nevertheless.
Normative Analysis in the Communications Field: Why We Should Distinguish Communicative Means and Ends of Justice
Authors: Hänska Max 
Published: April 2019

Abstract
In the social sciences, we often face normative questions, not least because many areas of inquiry intersect with public policy. Understanding and explaining media and communications is one task, deciding how communication systems should be organized quite another, but normative analysis receives scant attention. This article explores normative analysis: what is involved in answering questions about justice and communication, about how sociopolitical and indeed communicative arrangements ought to be organized.
A Photoinduced Cascade for the Synthesis of 1H‐Indole‐2‐Acetamide Derivatives
Authors: Borger Maribel , Callen Daniel P. , Frederich James H. 
Published: April 2019

AbstractReadily prepared 3‐(2‐aminoaryl)‐6‐aminopyridazine N‐oxides undergo a photoinduced cascade transformation to furnish 1H‐indole‐2‐acetamides. The reported method uniquely proceeds via acid‐catalyzed isomerization of a 2‐aminofuran intermediate and supports modular synthetic entry to indole derivatives that would be difficult to access by any other means.
Synoptic analysis and simulation of an unusual dust event over the Atacama Desert
Authors: Reyers Mark , Hamidi Mehdi , Shao Yaping 
Published: April 2019

AbstractAn unusual dust event over the Atacama Desert occurred in July 2016. Here, a synoptic study of the event is carried out using the NCEP FNL analysis data and WRF‐chem simulations. The “zonalization” of a mid‐tropospheric trough leads to the formation of a horizontal convergence band over the Northern Atacama and thus downward wind below it. As the descending air masses warm adiabatically, strong temperature contrasts to the colder air over the western Andes occur and intensify the down‐valley winds, thus leading to extraordinary strong easterly winds in the Atacama. Simulations with WRF‐chem indicate that these surface winds are sufficient for large‐scale dust emission, and simulated dust plumes traveling far over the eastern South Pacific agree well with the observations. As the integrated dust load is comparable with the load observed in major dust sources of the world, our findings highlight the importance of such unusual events.
Ein Hochhaus der neuen Generation
Authors: Pfeifer Matthias 
Published: April 2019

AbstractMit seinen 190 Metern Höhe gehört der neu errichtete OMNITURM in Frankfurt am Main nicht zu den höchsten Hochhäusern im weltweiten Vergleich, nicht einmal im Vergleich mit anderen Hochhäusern in Frankfurt, seine architektonische Strahlkraft und die damit verbundenen statisch‐konstruktiven Herausforderungen machen ihn aber zu etwas ganz Besonderem. Weithin sichtbar ist das architektonische Merkmal des sogenannten „Hüftschwungs“, eine über neun Geschosse, vom 14. bis zum 23. Geschoss, reichende rotierende Verschiebung der Ebenen gegeneinander um bis zu 8,5 m gegen die Vertikale. Dies ist der sogenannte „RESI“‐Bereich, der, anders als der Rest des Gebäudes, nicht mit Büros, sondern durch hochwertige Wohnungen genutzt wird und durch die gegenseitigen Verschiebungen in jedem Stockwerk die Anordnung von Terrassen ermöglicht, von denen aus man das Flair der Stadt auch in der Dämmerung oder am Abend genießen kann. Da die äußerst schlanken Schleuderbetonstützen des Gebäudes, gefertigt aus hochfestem Beton C140 mit Sonderbewehrung SAS 670, an den äußeren Rändern der Deckenplatten angeordnet sind, folgen sie den Verschiebungen, stehen teilweise – sehr imposant aussehend – deutlich schräg, vereinigen sich sogar im unteren Drittel des RESI‐Bereich, in zwei Gebäudeecken von je zweien zu je einer Stütze, durchlaufen gekrümmt den RESI‐Bereich, um schließlich im oberen Drittel sich wieder zu entzweien und dann gerade bis zur Spitze des Turms durchzulaufen. Demgegenüber führen die Verschiebungen an den gegenüberliegenden Gebäudeecken zu immer größer werdenden Auskragungen der Decken, denen mit zusätzlichen „Rucksackstützen“ begegnet wird. In diesem Beitrag werden einige der vielen statisch‐konstruktiven Besonderheiten des Bauwerks beschrieben.
Redox‐Mediated Poly(2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid)/Ammonium Molybdate Hydrogels for Highly Effective Flexible Supercapacitors
Authors: Cevik Emre , Bozkurt Ayhan , Hassan Muhammad , Gondal M. Ashraf , Qahtan Talal F. 
Published: April 2019

AbstractFlexible supercapacitors were constructed by using novel redox‐mediated polymer electrolytes including poly (2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid) (PAMPS) and ammonium molybdate [(NH4)2MoO4] (Mo). The gel polymer electrolytes PAMPS/Mox were prepared in different compositions, where x represents the doping ratio of Mo into PAMPS electrolyte. The structure and morphology of the electrolytes were elucidated by using various spectroscopic and microscopic methods, and then they were used in the fabrication of symmetric supercapacitors. The electrochemical performances of the devices were investigated by using cyclic voltammetry, galvanostatic charge‐discharge, and electrochemical impedance spectroscopy. The system containing active carbon as the electrode and PAMPS/Mo3 as the electrolyte produced a maximum specific capacitance of 530 F g−1 with a 30 % enhancement in capacitance compared to the Mo‐free supercapacitor. The energy density of the device is 73 Wh kg−1 with a power density of 580 W kg−1. The redox‐active hydrogel‐based supercapacitor exhibited an excellent performance even after 2500 charge‐discharge cycles, maintaining 92 % of its original capacitance. A flexible supercapacitor was assembled by using PAMPS/Mo3 electrolyte and successfully operated a light‐emitting diode (LED).
Efficient Hot‐Electron Transfer under Modal Strong Coupling Conditions with Sacrificial Electron Donors
Authors: Cao Yanfeng , Oshikiri Tomoya , Shi Xu , Ueno Kosei , Li Jie , Misawa Hiroaki 
Published: April 2019

AbstractIn this study, we investigated the hot‐electron transfer efficiency under modal strong coupling conditions by monitoring the photocurrent generated at a plasmonic photoanode. We fabricated a gold nanoparticles/titanium dioxide/gold film structure that shows a modal strong coupling between the Fabry−Pérot nanocavity mode and the localized surface plasmon and then explored the effect of the strong coupling on the incident photon‐to‐current conversion efficiency (IPCE) and internal quantum efficiency (IQE) in the presence of triethanolamine (TEOA) as a sacrificial electron donor to accelerate the surface reaction enough. The IPCEs for the upper and lower branches of the strong coupling were enhanced up to 4.5 and 4.0 times, respectively, by the addition of TEOA. Additionally, the average IQE with TEOA at wavelengths from 500 to 800 nm reached 3%. The Fermi level shifts due to the generation and consumption of hot‐carriers were also discussed by comparing the in situ spectroelectrochemical measurements with and without TEOA.
Flexible Graphene/Carbon Nanotube Electrochemical Double‐Layer Capacitors with Ultrahigh Areal Performance
Authors: Romano Valentino , Martín‐García Beatriz , Bellani Sebastiano , Marasco Luigi , Kumar Panda Jaya , Oropesa‐Nuñez Reinier , Najafi Leyla , Del Rio Castillo Antonio Esau , Prato Mirko , Mantero Elisa , Pellegrini Vittorio , D'Angelo Giovanna , Bonaccorso Francesco 
Published: April 2019

AbstractThe fabrication of electrochemical double‐layer capacitors (EDLCs) with high areal capacitance relies on the use of elevated mass loadings of highly porous active materials. Herein, we demonstrate a high‐throughput manufacturing of graphene/carbon nanotubes hybrid EDLCs. The wet‐jet milling (WJM) method is exploited to exfoliate the graphite into single‐few‐layer graphene flakes (WJM‐G) in industrial volumes (production rate ca. 0.5 kg/day). Commercial single‐/double‐walled carbon nanotubes (SDWCNTs) are mixed with graphene flakes in order to act as spacers between the flakes during their film formation. The WJM‐G/SDWCNTs films are obtained by one‐step vacuum filtration of the material dispersions, resulting in self‐standing, metal‐ and binder‐free flexible EDLC electrodes with high active material mass loadings up to around 30 mg cm−2. The corresponding symmetric WJM‐G/SDWCNTs EDLCs exhibit electrode energy densities of 539 μWh cm−2 at 1.3 mW cm−2 and operating power densities up to 532 mW cm−2 (outperforming most of the reported EDLC technologies). The EDCLs show excellent cycling stability and outstanding flexibility even in highly folded states (up to 180°).
Intrinsic and Catalyzed Photochemistry of Phenylvinylketone for Wavelength‐Sensitive Controlled Polymerization
Authors: Reeves Jennifer A. , De Alwis Watuthanthrige Nethmi , Boyer Cyrille , Konkolewicz Dominik 
Published: April 2019

AbstractReversible addition‐fragmentation chain transfer (RAFT) photopolymerization of phenylvinylketone (PVK) is investigated. The polymerization is investigated both in the presence of two photocatalysts (iridium tris(phenylpyridine (Ir(ppy)3) and zinc tetraphenylporphyrin (ZnTPP)). The polymerization was efficient in the absence of photocatalyst, and accelerated by Ir(ppy)3, whereas ZnTPP was found to lead to retardation of polymerization. In all cases, well‐controlled polymers were synthesized with linear growth in Mn with conversion and narrow molecular weight distributions. The observed photopolymerization kinetics were consistent with a Norrish Type 1 reaction of PVK to give two radicals. The polymerization kinetics were investigated as a function of wavelength, with the reaction rate being fastest with blue irradiation (440 nm), which is surprisingly far from the absorption maximum of PVK and Ir(ppy)3. Photodegradation of PVK was observed under UV irradiation, but the polymers were stable against visible light.
Cannabidiol protects livers against nonalcoholic steatohepatitis induced by high‐fat high cholesterol diet via regulating NF‐κB and NLRP3 inflammasome pathway
Authors: Huang Yuanling , Wan Ting , Pang Nengzhi , Zhou Yujia , Jiang Xuye , Li Bangyan , Gu Yingying , Huang Yufeng , Ye Xiaodie , Lian Hui , Zhang Zhenfeng , Yang Lili 
Published: April 2019

AbstractCannabidiol (CBD), an abundant nonpsychoactive constituent of marijuana, has been reported previously to protect against hepatic steatosis. In this study, we studied further the functions and mechanisms of CBD on liver inflammation induced by HFC diet. Mice feeding an HFC diet for 8 weeks were applied to test the protective effect of CBD on livers. RAW264.7 cells were incubated with LPS + ATP ± CBD to study the mechanisms of the effect of CBD against inflammasome activation. We found that CBD alleviated liver inflammation induced by HFC diet. CBD significantly inhibited the nuclear factor‐κappa B (NF‐κB) p65 nuclear translocation and the activation of nucleotide‐binding domain like receptor protein 3 (NLRP3) inflammasome both in vivo and in vitro studies, which lead to the reduction of the expression of inflammation‐related factors in our studies. In addition, Inhibitor of activation of NF‐κB partly suppressed the NLRP3 inflammasome activation, while adding CBD further inhibited NF‐κB activation and correspondingly suppressed the NLRP3 inflammasome activation in macrophages. In conclusion, the suppression of the activation of NLRP3 inflammasome through deactivation of NF‐κB in macrophages by CBD might be one mechanism of its anti‐inflammatory function in the liver.
miRNA‐143 replacement therapy harnesses the proliferation and migration of colorectal cancer cells in vitro
Authors: Karimi Leila , Zeinali Tahereh , Hosseinahli Nayer , Mansoori Behzad , Mohammadi Ali , Yousefi Mehdi , Asadi Milad , Sadreddini Sanam , Baradaran Behzad , Shanehbandi Dariush 
Published: April 2019

AbstractmiR‐143 is a tumor suppressor miRNA which its downregulation is frequently reported in colorectal cancer (CRC). This miRNA is a negative regulator of K‐RAS, c‐MYC, BCL‐2, and MMP‐9 genes which are engaged in tumor growth and metastasis. In the present study, miR‐143 restoration was performed by transfection of the pCMV‐miR‐143 vector into the SW‐480 CRC cells. Subsequently, alterations in proliferative and migratory potential of the cells were investigated by the 3‐(4,5‐dimethylthiazol‐2‐yl)‐2,5‐diphenyl tetrazolium bromide (MTT) and wound‐healing assays, respectively. Moreover, to detect apoptosis incidence in the transfected cells, 4',6‐diamidino‐2‐phenylindole (DAPI) staining was used. Furthermore, mRNA levels of c‐MYC, K‐RAS, MMP‐9, and BCL‐2, as potential targets of miR‐143, were assessed by quantitative Real‐Time PCR (qRT‐PCR). Also the expression levels of c‐MYC, K‐RAS, and MMP‐9 proteins were investigated by the western blot analysis. Finally, the ratio of BAX to BCL‐2 expression, as a potential marker of the response to apoptosis stimuli, was compared between the control and test groups. Furthermore, the trypan blue test was performed to determine the cell viability in cell suspension. According to the results, a decreased viability and migratory potential was observed for the miR‐143 receiving cells. The DAPI staining also confirmed the occurrence of apoptosis. Moreover, BCL‐2, K‐RAS, MMP‐9, and c‐MYC mRNAs were significantly downregulated in the miR‐143 grafted cells. The BAX/BCL‐2 ratio also indicated a notable increase in the cells with miR‐143 overexpression. In brief, miR‐143 replacement could be considered as an effective strategy for the management of CRC and attenuating its invasive features.
Prognostic and clinicopathological significance of LOXL2 in cancers: A systematic review and meta‐analysis
Authors: Zhang Xuerui , Huang Junfu , You Fan , Li Wang , Zou Zhenhong 
Published: April 2019

AbstractBackgroundLysyl oxidase‐like 2 (LOXL2) is an extracellular matrix (ECM)‐modifying enzyme which can regulate the tensile strength of connective tissues by crosslink of collagen and elastin. Numerous studies have claimed correlations between LOXL2 expression and prognosis or clinicopathological characteristics in various cancers. However, the validities of these claims are still in question. To address these experimental results, a meta‐analysis was done to assess the prognostic and clinicopathological significance of LOXL2 expression in various cancers.MethodsThe keywords were used for searching systematically in PubMed, Web of Science, Embase, Wanfang database, and CNKI. Stata SE15.0 was used for meta‐analysis. The hazard ratio (HR) and odds ratios (ORs) were pooled to assess the relationship between LOXL2 expression and overall survival (OS), disease‐free survival (DFS), and clinicopathological parameters.ResultsSeventeen studies with 3,881 patients were considered as valid studies. The results indicated that the patients who had a positive LOXL2 expression had a shorter OS (HR 1.60, 95% CI 1.26–1.94, p < 0.001) or DFS (HR 1.46, 95% CI 1.14–1.78, p < 0.001). For clinicopathological parameters, statistical significances were presented in age (OR 1.34, 95% CI 1.13–1.58, p = 0.001), lymph node metastasis (OR 2.20, 95% CI 1.37–3.53, p < 0.001), tumor size (OR 1.46, 95% CI 1.15–1.85, p = 0.002), and vascular invasion (OR 1.82, 95% CI 1.33–2.48, p < 0.001).ConclusionsThe results demonstrate that positive LOXL2 expression presents poorer OS and worse clinicopathological parameters. LOXL2 may be an effective biomarker to evaluate the prognosis in different type of cancers.
A case of coronary‐pulmonary artery fistula with coronary artery aneurysm detected for Kawasaki disease remote phase
Authors: Inoue Tomohiro , Miyake Toshiharu , Mushiake Sotaro 
Published: April 2019

AbstractFollow‐up echocardiography showed two coronary‐pulmonary artery fistulae and a coronary artery aneurysm in a 12‐year‐old boy who had been diagnosed with Kawasaki disease without persistent coronary artery lesion at the acute phase when he was 6‐months‐old. Left coronary arteriogram confirmed the fistulae and the 4.3 × 6.3 mm aneurysm. Results show that the fistula is associated with Kawasaki disease.