bluuebunny/crossref_metadata_2025_split huggingface dataset:
L’éducation autochtone au Québec sous l’angle de la sociologie : de l’objet au sujet
Authors: Ratel Jean-Luc 
Published: October 2019

Fidèle à la rupture épistémologique initiale entre sociologie et anthropologie, c’est traditionnellement cette dernière qui a étudié les Autochtones, alors que l’éducation autochtone est encore surtout abordée dans une perspective interdisciplinaire. Il devient par conséquent plus difficile d’y distinguer spécifiquement l’apport de la sociologie. Nous proposons d’abord un survol de la production scientifique en éducation autochtone au Québec des années 1960 aux années 1990, pour ensuite poursuivre avec celle des années 2000 et 2010, là où l’on observe davantage de publications en sociologie. Nous poursuivrons par une réflexion sur les thèmes étudiés en éducation autochtone et l’apport de la sociologie dans les études autochtones, dans un contexte où deux paradigmes se démarquent (Martin, 2009) : l’approche du passage de la tradition à la modernité et l’approche (post)coloniale. Nous conclurons avec une réflexion sur le dépassement de la perspective déficitaire en éducation autochtone et les changements occasionnés par la recherche collaborative en sociologie.
Rosiglitazone accelerates wound healing by improving endothelial precursor cell function and angiogenesis in db/db mice
Authors: Zhou Guoliang , Han Xue , Wu Zhiheng , Shi Qiaojuan , Bao Xiaogang 
Published: October 2019

Background & Aims
Endothelial precursor cell (EPC) dysfunction is one of the risk factors for diabetes mellitus (DM) which results in delayed wound healing. Rosiglitazone (RSG) is a frequently prescribed oral glucose-lowering drug. Previous studies have shown the positive effects of RSG on ameliorating EPC dysfunction in diabetic patients. Interestingly, knowledge about RSG with regard to the wound healing process caused by DM is scarce. Therefore, in this study, we investigated the possible actions of RSG on wound healing and the related mechanisms involved in db/db diabetic mice.

Methods
Db/db mice with spontaneous glucose metabolic disorder were used as a type 2 DM model. RSG (20 mg/kg/d, i.g.,) was administered for 4 weeks before wound creation and bone marrow derived EPC (BM-EPC) isolation. Wound closure was assessed by wound area and CD31 staining. Tubule formation and migration assays were used to judge the function of the BM-EPCs. The level of vascular endothelial growth factor (VEGF), stromal cell derived factor-1α (SDF-1α) and insulin signaling was determined by ELISA. Cell viability of the BM-EPCs was measured by CCK-8 assay.

Results
RSG significantly accelerated wound healing and improved angiogenesis in db/db mice. Bioactivities of tube formation and migration were decreased in db/db mice but were elevated by RSG. Level of both VEGF and SDF-1α was increased by RSG in the BM-EPCs of db/db mice. Insulin signaling was elevated by RSG reflected in the phosphorylated-to-total AKT in the BM-EPCs. In vitro, RSG improved impaired cell viability and tube formation of BM-EPCs induced by high glucose, but this was prevented by the VEGF inhibitor avastin.

Conclusion
Our data demonstrates that RSG has benefits for wound healing and angiogenesis in diabetic mice, and was partially associated with improvement of EPC function through activation of VEGF and stimulation of SDF-1α in db/db mice.
Status of Karnal Bunt in Major Wheat Growing Regions of Northern Haryana
Authors: Jakhar S. S. , Kumar Sunil , Malik Anil Kumar 
Published: October 2019

Karnal bunt is a major problem in reducing the quality of wheat seed during seed production programmes in Haryana. A survey was conducted to access the status of Karnal bunt in major wheat growing regions of Haryana during Rabi season of 2018-19. During the survey 11 districts of northern Haryana viz., Hisar, Yamunanagar, Sirsa, Fatehabad, Ambala, Jind, Kurukshetra, Kaithal, Karnal, Panipat and Sonipat were covered. Under the survey a total of 785 samples of wheat grains were collected from 34 grain markets. Samples revealed the range of Karnal bunt was between 0.05 – 4.70 per cent in these districts which was exceeding the permissible limit of Indian Minimum Seed Certification Standards (0.25%) for quality wheat seed production. The infected samples were 395 (50.31%) and rejected samples were 155 (19.74%) having infection more than 0.25 per cent. Maximum average infection was found in Karnal district (0.413%), Hisar (0.278%) and Kurukshetra (0.273%) and the minimum was recorded in Sirsa (0.012%), Ambala (0.077%) and Fatehabad (0.104%). The range of infection was highest in Karnal (0.05 - 4.70%), then Hisar (0.05 - 4.50%) followed by Kurukshetra (0.05 - 3.40%) and lowest was observed in Sirsa (0.05 - 0.10).
Development of a New Type-I Isotherm for Correction of Langmuir Isotherm’s Over-estimation of Adsorption at Higher Pressures
Authors: J. Alawode Adeolu , A. Falode Olugbenga 
Published: October 2019

Different gas equilibrium adsorption models (or isotherms) with various theoretical frameworks have been applied to quantify adsorbed volume (V) of gas (or fluid) through pressure-volume behaviour at a constant temperature. Most often, Langmuir isotherm (representing Type I Isotherm) has been used in modelling monolayer adsorption even though it yields over-estimation at higher pressures thus contradicting the description of Type I isotherm. Here, higher pressures refer to pressures above the adsorption saturation pressure(Ps) . Hence, in this work, a new Type I adsorption isotherm involving pressure(P), adsorption saturation pressure(Ps) , maximum adsorbed volume and adsorbate-adsorbent resistance parameter was developed using kinetic approach. The developed adsorption isotherm is V=

and it shows that Vmax is attained when pressure increases to Ps , above which no further gas adsorption occurs. The developed isotherm can be used to model all cases of monolayer adsorptions of gases (or fluids) on adsorbents. The developed and Langmuir isotherms were used in modelling secondary low-pressure gas adsorption data of different adsorbents and the qualities of fit were statistically assessed. For laboratory methane adsorption on Turkey’s shale sample at 25°C, the developed isotherm yields a correlation with an R2 value of 0.997 and predicts a maximum adsorption volume of 0.0450 mmol g-1 at a Ps of 2,005 psia. However, Langmuir isotherm yields a correlation with an R2 value of 0.989 and predicts a maximum adsorption volume (Langmuir volume,VL ) of 0.0548 mmol g-1 at infinite Ps. At the higher-pressure range, the developed isotherm reveals that Langmuir isotherm is not a Type I isotherm but a "pseudo-Type I” isotherm.
Engineering III–V Semiconductor Nanowires for Device Applications
Authors: Wong‐Leung Jennifer , Yang Inseok , Li Ziyuan , Karuturi Siva Krishna , Fu Lan , Tan Hark Hoe , Jagadish Chennupati 
Published: October 2019

AbstractIII–V semiconductor nanowires offer potential new device applications because of the unique properties associated with their 1D geometry and the ability to create quantum wells and other heterostructures with a radial and an axial geometry. Here, an overview of challenges in the bottom‐up approaches for nanowire synthesis using catalyst and catalyst‐free methods and the growth of axial and radial heterostructures is given. The work on nanowire devices such as lasers, light emitting nanowires, and solar cells and an overview of the top‐down approaches for water splitting technologies is reviewed. The authors conclude with an analysis of the research field and the future research directions.
Inorganic 2D Luminescent Materials: Structure, Luminescence Modulation, and Applications
Authors: Su Liumei , Fan Xing , Yin Teng , Wang Huide , Li Yu , Liu Fusheng , Li Junqin , Zhang Han , Xie Heping 
Published: October 2019

AbstractInorganic luminescent semiconductors have triggered burgeoning research interest in all‐solid‐state light‐emitting devices over the past decades owing to their band‐to‐band transitions along with their high efficiency and excellent long‐term stability compared with most organic luminescent materials. Recent booming developments in 2D materials demonstrate their fascinating tunable layer‐dependent electronic structures, strong light–matter interactions, high carrier mobilities, and broad spectral ranges at the 2D limit, which are promising for high‐performance light‐emitting devices. Here, state‐of‐the‐art 2D luminescent nanomaterials are reviewed from the fundamental aspects of crystal structures and electronic properties to practical applications, providing insights into the luminescence mechanism. Many research paradigms are comprehensively discussed to elaborate ingenious luminescence modulation strategies through control of the microstructure, such as the number of layers, defects, morphologies, charge carriers, heterostructures, and surface states of 2D systems. Promising applications of 2D luminescent systems in light‐emitting diodes, lasers, and bioimaging and biosensing devices are systematically illustrated. Finally, by summarizing the luminescence in 2D materials, challenges are proposed, which will provide new opportunities for developing 2D luminescence physics, luminescent materials, and related light‐emitting device applications.
Molybdenumhexacarbonyl‐Mediated Imino‐Carbonylative Acylation of NH‐Sulfoximines with Aryl Iodides
Authors: Baranwal Siddharth , Gupta Surabhi , Sabiah Shahulhameed , Kandasamy Jeyakumar 
Published: October 2019

AbstractDevelopment of a catalyst‐free, robust and straightforward iminocarbonylation protocol for the synthesis of N‐acyl sulfoximines from sulfoximines and aryl iodides in the presence of Mo(CO)6 has been reported. Simple operation, broad substrate scope, wide functional group tolerance and excellent yields are the salient features of this work.
Feasibility of sonographic access to the cricothyroid membrane in the presence of a rigid neck collar in healthy Chinese adults: A prospective cohort study
Authors: Wong Lok Yu , Yang Marc L. C. , Leung Hei Jim , Pak Chi Shing 
Published: October 2019

AbstractObjectives(1) To study the dimensions of cricothyroid membranes (CTMs) in healthy Chinese adults in two neck positions, one with rigid neck collar (RNC) and neck extended by ultrasonography (USG). (2) To evaluate how body habitus and neck positions may affect the access time of CTMs, and thus the feasibility for ultrasound‐guided cricothyroidotomy.MethodsWe scanned 39 adult staff of a local emergency department. Their CTMs were measured by two emergency physicians (EP) separately. The subjects' gender, weight, height, age, neck circumferences and BMI were collected. Image qualities (graded in ‘inadequate, adequate and good’) and image acquisition time of the CTMs were also recorded to ascertain proper CTM measurements.ResultsThe mean depth of the CTM (neck extended) was 5.6 mm, and the standard deviation (SD) was 1.52. The mean depth (with RNC) was 5.97mm with SD 1.61. The mean length of the CTM (mm ± SD) with the neck extended and with the RNC was 10.5 ± 2.15 and 9.97 ± 2.24, respectively. The median image acquisition time for neck extended was 6.36s with interquartile range (IQR) of 2.32–8.4 s, while for RNC the median time was 5.60 s (IQR = 3.71–7.49; P = 0.539). Image acquisition time between the first and the second sonographers was similar. All subjects’ CTM could be identified readily by USG.ConclusionsThe CTM can be located quickly and reliably by bedside USG, even in overweight/obese persons with or without an RNC in place. We recommend that further study on the feasibility of bedside cricothyroidotomy with RNC kept on should be explored.
Chemoenzymatic Posttranslational Modification Reactions for the Synthesis of Ψ[CH2NH]‐Containing Peptides
Authors: Kato Yasuharu , Kuroda Tomohiro , Huang Yichao , Ohta Risa , Goto Yuki , Suga Hiroaki 
Published: October 2019

AbstractThe Ψ[CH2NH] reduced amide bond is a peptide isostere widely used in the development of bioactive pseudopeptides. Reported here is a method of chemoenzymatic posttranslational modification for the synthesis of Ψ[CH2NH]‐containing peptides converted from ribosomally expressed peptides. The posttranslational conversion composed of an enzymatic cyclodehydration and facile two‐step chemical reduction achieves deoxygenation of a specific amide bond present in a nonprotected peptide in water. This method generates the Ψ[CH2NH] bond in peptides and is applicable to various peptide sequences, potentially enabling the preparation of a library of Ψ[CH2NH]‐containing peptides.
High‐Entropy Layered Oxide Cathodes for Sodium‐Ion Batteries
Authors: Zhao Chenglong , Ding Feixiang , Lu Yaxiang , Chen Liquan , Hu Yong‐Sheng 
Published: October 2019

AbstractMaterial innovation on high‐performance Na‐ion cathodes and the corresponding understanding of structural chemistry still remain a challenge. Herein, we report a new concept of high‐entropy strategy to design layered oxide cathodes for Na‐ion batteries. An example of layered O3‐type NaNi0.12Cu0.12Mg0.12Fe0.15Co0.15Mn0.1Ti0.1Sn0.1Sb0.04O2 has been demonstrated, which exhibits the longer cycling stability (ca. 83 % of capacity retention after 500 cycles) and the outstanding rate capability (ca. 80 % of capacity retention at the rate of 5.0 C). A highly reversible phase‐transition behavior between O3 and P3 structures occurs during the charge‐discharge process, and importantly, this behavior is delayed with more than 60 % of the total capacity being stored in O3‐type region. Possible mechanism can be attributed to the multiple transition‐metal components in this high‐entropy material which can accommodate the changes of local interactions during Na+ (de)intercalation. This strategy opens new insights into the development of advanced cathode materials.
Reaktionen des Bromylfluorids, BrO2F: Gemischtvalente Brom‐Sauerstoff‐Kationen, Br3O4+ und Br3O6+
Authors: Seppelt Konrad 
Published: October 2019

AbstractFür das instabile und extrem reaktive BrO2F wird eine verlässliche Synthese beschrieben. Dieses wird in BrO2+ SbF6−, BrO2+ AsF6− und BrO2+ AsF6−⋅2 BrO2F umgewandelt. Letzteres zerfällt in Br3O4⋅Br2+ AsF6− mit fünf‐, drei‐ und einwertigem Brom. Mit HSO3CF3 bildet sich BrO2+H(SO3CF3)2−. Überschuss an BrO2F ergibt gemischtvalentes Br3O6+OSO3CF3− mit fünf‐ und dreiwertigem Brom. Reaktionen von BrO2F und MoF5 in SO2ClF oder CH2ClF ergeben Cl2BrO6+Mo3O3F13−. Die Reaktionen von BrO2F mit (CF3CO)2O und NO2 ergeben O2Br‐O‐CO‐CF3 und das bekannte NO2+Br(ONO2)2−. Alle diese Verbindungen sind thermodynamisch instabil.
Electrochemical evaluation of functionalized graphene oxide filled PVA‐chitosan biohybrid for supercapacitor applications
Authors: Shekhar Shashank , Sarkar Anjana , Sharma Bhasha , Jain Purnima 
Published: October 2019

ABSTRACTThe evolution of eco‐friendly and cost efficient energy storage devices is eminent because of depletion of ozone layer and environmental issues. Biopolymer nanocomposites are the most auspicious aspirant to intercept hazardous situations. Chemical functionalization of graphene oxide (GO) is an essential component to avoid agglomeration of nanoparticles and it also helps in end‐use applications. Poly(vinyl alcohol) and chitosan biocomposite is prepared by magnetic stirring method followed by dispersion of nanofiller by ultrasonication process. The aim is to emphasize on usage of metal‐free material that is bionanocomposite, to exploit and enhance electrical properties of resultant product. The major drawback of chitosan is its low mechanical strength which can be overcome by employing GO and poly(vinyl alcohol). Scanning electron microscopy and transmission electron microscopy studies examined the uniform distribution of GO nanoparticles and functionalization improved the dispersion by creating nitrogen and hydroxyl moieties, this increases the intermolecular interactions between nanofiller and biopolymer matrix. The investigation of thermal analysis revealed the improved thermal stability and lower weight reduction on incorporation of GO and chemically functionalized GO. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48610.
A Diaminopropane Diolefin Ru(0) Complex Catalyzes Hydrogenation and Dehydrogenation Reactions
Authors: Casas Fernando , Trincado Monica , Rodriguez‐Lugo Rafael , Baneerje Dipshikha , Grützmacher Hansjörg 
Published: October 2019

AbstractNew ruthenium (0) complexes with a cooperative diolefin diaminopropane (DAP) or the dehydrogenated iminopropenamide ligand (IPA) were synthesized for comparison with their diaminoethane (DAE)/ diazadiene (DAD) ruthenium analogues. These DAP/IPA complexes are efficient catalysts in dehydrogenation reactions of alkaline aqueous methanol which proceeds under mild conditions (T=70 °C) and of higher alcohols, forming the corresponding carbonate and carboxylates, respectively. The scope of the reaction includes an example of a 1,2‐diol as model for biomass derived alcohols. Their catalytic applications are extended to the atom‐efficient dehydrogenative coupling of alcohols and amines to amides. The reaction proceeds without any additives and is applicable to the synthesis of formamides from methanol. Moreover, DAP/IPA complexes catalyze the hydrogenation of a series of esters, lactone, ketone, activated olefin, aldehyde and imine substrates. The diaminopropane Ru catalyst exhibits higher activity compared to the dehydrogenated β‐ketiminate (IPA) and previously studied DAD/DAE based catalysts. We present studies on their stoichiometric reactivity with relevance to their possible catalytic mechanisms and the isolation and full characterization of key reaction intermediates.
Optogenetic Modulation of a Catalytic Biofilm for the Biotransformation of Indole into Tryptophan
Authors: Hu Yidan , Liu Xiaobo , Ren Aloysius Teng Min , Gu Ji‐Dong , Cao Bin 
Published: October 2019

AbstractIn green chemical synthesis, biofilms as biocatalysts have shown great promise. Efficient biofilm‐mediated biocatalysis requires the modulation of biofilm formation. Optogenetic tools are ideal to control biofilms because light is noninvasive, easily controllable, and cost‐efficient. In this study, a gene circuit responsive to near‐infrared (NIR) light was used to modulate the cellular level of bis‐(3′‐5′) cyclic dimeric guanosine monophosphate (c‐di‐GMP), a central regulator of the prokaryote biofilm lifestyle, which allowed the regulation of biofilm formation by using NIR light. The engineered biofilm was applied to catalyze the biotransformation of indole into tryptophan in submerged biofilm reactors and NIR‐light‐enhanced biofilm formation resulted in an approximately 30 % increase in tryptophan yield, which demonstrates the feasibility of the application of light to modulate the formation and performance of catalytic biofilms for chemical production. The c‐di‐GMP‐targeted optogenetic approach to modulate catalytic biofilms showcases applications for biofilm‐mediated biocatalysis.
Closure of radial forearm free flap donor site: A comparative study between keystone flap and skin graft
Authors: Potet Pauline , De Bonnecaze Guillaune , Chabrillac Emilien , Dupret‐Bories Agnès , Vergez Sébastien , Chaput Benoit 
Published: October 2019

AbstractBackgroundThe aim was to investigate the feasibility of radial forearm free flap (RFFF) donor site closure by keystone flap (KF) and compare its outcomes to those of skin graft (SG) closure.MethodsOne hundred and one patients who underwent RFFF for head and neck reconstruction were included (35 KF closure and 65 SG closure). Duration of wound healing and donor site complications was collected. After a minimal follow‐up of 1 year, patients were questioned about functional and esthetic impairment.ResultsCoverage of donor site by KF was successful in all cases. The duration of wound healing was longer after SG than after KF (32 days vs 18 days, P < .001). Healing complications, esthetic and functional results were not statistically different.ConclusionForearm donor site closure by KF is a feasible alternative to the traditional SG. Its main advantages are the reduced wound healing time and the avoidance of a second donor site.
Emotion regulation in posttraumatic stress disorder (PTSD): Rumination accounts for the association between emotion regulation difficulties and PTSD severity
Authors: Pugach Cameron P. , Campbell Allison A. , Wisco Blair E. 
Published: October 2019

AbstractObjectiveThe current study investigated whether rumination accounts for the relationship between multiple aspects of emotion regulation (ER) difficulties and posttraumatic stress disorder (PTSD) severity.MethodParticipants were 90 community members (43% diagnosed with PTSD; Mage = 26.7, 86% female) who were interviewed using the Clinician‐Administered PTSD Scale‐5 and completed self‐reported measures of ER and rumination.ResultsThe indirect effect of rumination completely accounted for the relationship between overall ER difficulties and PTSD severity. This finding was replicated for three unique aspects of ER (i.e., nonacceptance of negative emotions, impulse control difficulties under emotional distress, and the ability to maintain goal‐oriented behavior under emotional distress). Reverse models testing the indirect effect of ER on the link between rumination and PTSD were nonsignificant.ConclusionsRumination is an important cognitive process linking specific aspects of ER difficulties to PTSD. Clinical interventions focused on improving ER abilities among those with PTSD may benefit from targeting rumination.
microRNA‐132 inhibits cardiomyocyte apoptosis and myocardial remodeling in myocardial infarction by targeting IL‐1β
Authors: Zhao Zonglei , Du Song , Shen Shuxin , Wang Lixia 
Published: October 2019

AbstractThe patients suffering from myocardial infarction (MI) undergo cardiac remodeling with the features of expanded myocardial infarct size and dilated left ventricle. Multiple microRNAs (miRNAs) are emerged as crucial modulators to participate in the remodeling process. This study is mainly intended to clarify the regulatory mechanism of miR‐132 in the MI‐induced myocardial remodeling. miR‐132 low expression, while interleukin‐1β (IL‐1β) high expression was determined in MI by reverse‐transcription quantitative polymerase chain reaction and ELISA assays. MI rats showed decreased cardiac function and increased cardiomyocyte apoptosis. Moreover, miR‐132 and IL‐1β levels were altered in cardiomyocytes to explore their role in MI, with levels of proapoptotic or antiapoptotic proteins in MI together with cardiac function indexes observed. In addition, upregulation of miR‐132, decreased levels of Bax and Cleaved Caspase‐3, increased left ventricular ejection fraction, left ventricular fractional shortening, the maximum rate of rise or decrease of left ventricular pressure (±dp/dtmax), and Bcl‐2 level, which could be reversed by overexpressing IL‐1β. All in all, miR‐132 inhibits cardiomyocyte apoptosis so as to ameliorate myocardial remodeling in rats with MI through IL‐1β downregulation. Thus, miR‐132 is a potential candidate for the MI treatment.