bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tuning the Crystal Structure and Luminescence of Pyrrolidinium Manganese Halides via Halide Ions
Authors: Jiang Chunli , Fu Hanmei , Han Ying , Li Dong , Lin Hechun , Li Bo , Meng Xiangjian , Peng Hui , Chu Junhao 
Published: January 2019

AbstractLuminescent and lead‐free organic‐transition metal halides (OTMHs) are greatly interesting for optical applications. In this work, six single crystals of pyrrolidinium manganese halides are prepared (C4H10N)MnCl3 (1), (C4H10N)8(Mn2Cl10)(MnCl4) (2), (C4H10N)MnBr3 (3), (C4H10N)2MnBr4 (4), and (C4H10N)2MnI4 (5 and 6 with two different crystal configurations). The analysis of crystal structures illustrates that halide ions play an important role in the crystal structure and further affect the luminescent properties of pyrrolidinium manganese halides. It is only for Cl− and Br− that produce perovskite‐type crystals which exhibit red emission. Other crystals with MnX42− tetrahedron unit emit green or yellow lights. It is interesting that the obtained crystals only contain one kind of halide ion with higher atomic number if there are two kinds of halide ions existing in the crystal growth solution. This study illustrates that the luminescent properties of OTMHs can be tuned by halide ions through deliberately designing experiments.
Self‐Templating Synthesis of 3D Hollow Tubular Porous Carbon Derived from Straw Cellulose Waste with Excellent Performance for Supercapacitors
Authors: Chen Zhimin , Wang Xiaofeng , Xue Beichen , Wei Qingling , Hu Lianghai , Wang Zichen , Yang Xiaomin , Qiu Jieshan 
Published: January 2019

AbstractA three‐dimensional hollow tubular porous carbon (SCPC) was prepared from straw cellulose waste through a self‐templating method combined with NaOH activation. Straw cellulose acts both as carbon source and structural template. The obtained SCPC exhibits a 3D hierarchical porous network structure. SCPC has a high specific surface area, a high mesoporosity ratio, and a low resistivity, which make it display excellent electrochemical performance for supercapacitors. SCPC showed a high specific capacitance of 312.57 F g−1 in 6 m KOH at 0.5 A g−1, an excellent rate performance of 281.32 F g−1 even at 15 A g−1, and an outstanding cyclic stability of 92.93 % capacitance retention after 20 000 cycles at 1 A g−1. SCPC‐based supercapacitors can deliver an energy density of 8.67 Wh kg−1 at a power density of 3.50 kW kg−1 in 6 m KOH and an energy density of 28.56 Wh kg−1 at a power density of 14.09 kW kg−1 in 1 m Et4NBF4/PC, which demonstrates the possibility of applying SCPC in supercapacitors. This research not only offers a facile and sustainable method for the preparation of hierarchical porous carbon for electrochemical energy storage devices but also provides a highly efficient method for the utilization of biomass waste.
Dynamic wildlife occupancy models using automated acoustic monitoring data
Authors: Balantic Cathleen , Donovan Therese 
Published: January 2019

AbstractAutomated acoustic monitoring of wildlife has been used to characterize populations of sound‐producing species across large spatial scales. However, false negatives and false positives produced by automated detection systems can compromise the utility of these data for researchers and land managers, particularly for research programs endeavoring to describe colonization and extinction dynamics that inform land use decision‐making. To investigate the suitability of automated acoustic monitoring for dynamic occurrence models, we simulated underlying occurrence dynamics, calling patterns, and the automated acoustic detection process for a hypothetical species under a range of scenarios. We investigated an automated species detection aggregation method that considered a suite of options for creating encounter histories. From these encounter histories, we generated parameter estimates and computed bias for occurrence, colonization, and extinction rates using a dynamic occupancy modeling framework that accounts for false positives via small amounts of manual confirmation. We were able to achieve relatively unbiased estimates for all three state parameters under all scenarios, even when the automated detection system was simulated to be poor, given particular encounter history aggregation choices. However, some encounter history aggregation choices resulted in unreliable estimates; we provide caveats for avoiding these scenarios. Given specific choices during the detection aggregation process, automated acoustic monitoring data may provide an effective means for tracking species occurrence, colonization, and extinction patterns through time, with the potential to inform adaptive management at multiple spatial scales.
Reducing anticipated non‐suicidal self‐injury by improving body esteem in individuals with weight suppression: A proof of concept study
Authors: Kennedy Grace A. , Jean Forney Katherine , Pinner Dennis , Martinez Kimberly M. , Buchman‐Schmitt Jennifer M. , Keel Pamela K. 
Published: January 2019

AbstractObjectiveResearch suggests that weight suppression (WS) is linked to non‐suicidal self‐injury (NSSI) and that drive for thinness and depression may explain this association. We conducted a proof‐of‐concept study using a randomized control trial design to determine if improving body esteem and reducing depressive symptoms reduced NSSI in individuals with WS.MethodWeight suppressed participants (N = 60) who engaged in NSSI were recruited from the community and randomly assigned to an on‐line intervention or control condition. The on‐line intervention was adapted from a cognitive‐dissonance intervention originally designed to reduce thin‐ideal internalization in females to an intervention to reduce internalization of unhealthy body ideals in both genders. Participants' weight/shape concerns, depressive symptoms, and NSSI were assessed at pre‐ and post‐intervention, or at baseline and 2‐week follow‐up for controls.ResultsCompared to controls, participants in the treatment condition reported greater decreases in likelihood of future NSSI [Cohen's d (95% CI) = −0.38 (−0.90–0.15)], weight/shape concerns [−1.19 (−1.75 to −0.62)], depressive symptoms [−1.00 (−1.56 to −0.45)], and significant improvements in appearance [1.27 (0.70–1.84)] and weight esteem [1.38 (0.80–1.96)].DiscussionFuture work could test this intervention in a larger trial with an active alternative treatment condition.
Effect of water temperature and fish biomass on environmental DNA shedding, degradation, and size distribution
Authors: Jo Toshiaki , Murakami Hiroaki , Yamamoto Satoshi , Masuda Reiji , Minamoto Toshifumi 
Published: January 2019

AbstractEnvironmental DNA (eDNA) analysis has successfully detected organisms in various aquatic environments. However, there is little basic information on eDNA, including the eDNA shedding and degradation processes. This study focused on water temperature and fish biomass and showed that eDNA shedding, degradation, and size distribution varied depending on water temperature and fish biomass. The tank experiments consisted of four temperature levels and three fish biomass levels. The total eDNA and size‐fractioned eDNA from Japanese Jack Mackerels (Trachurus japonicus) were quantified before and after removing the fish. The results showed that the eDNA shedding rate increased at higher water temperature and larger fish biomass, and the eDNA decay rate also increased at higher temperature and fish biomass. In addition, the small‐sized eDNA fractions were proportionally larger at higher temperatures, and these proportions varied among fish biomass. After removing the fish from the tanks, the percentage of eDNA temporally decreased when the eDNA size fraction was >10 µm, while the smaller size fractions increased. These results have the potential to make the use of eDNA analysis more widespread in the future.
Data‐driven minimum variance control using regulatory closed‐loop data based on the FRIT method
Authors: Okada Shogo , Masuda Shiro 
Published: January 2019

AbstractThe paper proposes data‐driven minimum variance regulatory control using a Fictitious Reference Iterative Tuning (FRIT) method. Our previous work has extended the original FRIT for reference signal tracking to the case of a stochastic disturbance attenuation problem. However, the method parametrizes the controller by using plant parameters based on a specific controller structure for minimum variance control. The present work uses a linearly parametrized inverse of the controller. Thus, a general parametrization is realized, and the integrator is straightforwardly introduced. An analytical result for the data‐driven cost function is also given. A numerical example shows effectiveness of the proposed method.
Investigation of the enantioselectivity of tetramethylammonium‐lactobionate chiral ionic liquid based dual selector systems toward basic drugs in capillary electrophoresis
Authors: Sun Xiaodong , Liu Kang , Du Yingxiang , Liu Jie , Ma Xiaofei 
Published: January 2019

AbstractRecently, chiral ionic liquids (CILs) have received increasing interest in chiral separation by CE. Nevertheless, the lack of deep perception of the specific mechanism about CILs in CE for enantioseparation still perplexes a legion of researchers, despite the strenuous efforts. In this paper, a lactobionic acid based ionic liquid, tetramethylammonium‐lactobionate (TMA‐LA) was applied for the first time in CE to establish dual selector system with clindamycin phosphate (CP) for enantiomeric separation. Compared to single CP system or single TMA‐LA system significantly improved separations of seven tested rameric drugs (propranolol, nefopam, citalopram, chlorphenamine, metoprolol, bisoprolol, and esmolol) were observed in the dual selector systems. Several crucial parameters such as type and proportion of organic modifier, buffer composition and pH, and concentration of TMA‐LA/CP were systematically investigated to achieve satisfied enantioseparation. Meanwhile, molecular modeling was applied to demonstrate the chiral recognition mechanism of the TMA‐LA/CP dual‐selector separation system using the molecular docking software Autodock, which well supported the experimental results. The existence of TMA‐LA/CP complex may give rise to a higher discriminatory ability against the enantiomers, indicating the reason of improved separation in TMA‐LA/CP system. All the influence factors evaluated by means of Statistical Product and Service Solutions (SPSS) to research the influences on the chiral separation system.
Combination of 13C and 2H SNIF‐NMR isotopic fingerprints of vanillin to control its precursors
Authors: Guyader Sophie , Thomas Freddy , Jamin Eric , Grand Mathilde , Akoka Serge , Silvestre Virginie , Remaud Gérald S. 
Published: January 2019

AbstractSynthetic vanillin is the flavouring most used in agro‐food industries, but more and more frequently consumers are now turning to natural origin. Vanilla planifolia (Andrews) is the most commercialized species of pods in the world and is mainly produced in Madagascar. However, periodically the production of V. planifolia suffers from poor climatic conditions, with the resulting degradation of both the quality and the quantity of the pods. Consequently, the price of vanilla pods rose to record in 2017 and the risk of fraud has increased in response. Analytical methods based on isotopic compositions have already proven their ability to ensure the authenticity of natural vanillin. In 2006, 2H SNIF‐NMR (site‐specific natural isotopic fractionation by nuclear magnetic resonance) was approved as official method by the Association of Official Analytical Chemists (AOAC 2006.05). However, this method is time consuming and the extraction of 1 g is cumbersome for the finished products. The information brought by combined 2H and 13C SNIF‐NMR profiles was compared using chemometric tools to determine the best routine tool to improve both the global analysis time and the potential of detection. As a result of this work the ability of the SNIF‐NMR method to verify the authenticity of vanillin has been improved, in particular by providing the first means to discern the geographical origin of vanilla pods. Furthermore, 13C NMR using pulse sequences such as INEPT (insensitive nuclei enhanced by polarization transfer) offers the possibility to improve the sensitivity of the analysis, with a reduced quantity of product (less than 50 mg) and a shorter analysis time, which will facilitate the study of the finished matrices as well as clearly discriminating the origins of the vanilla flavourings.
Synthesis of Graphitic Mesoporous Carbon from Metal Impregnated Silica Template for Proton Exchange Membrane Fuel Cell Application
Authors: Sultana K. N. , Worku D. , Hossain M. T. Z. , Ilias S. 
Published: January 2019

AbstractHigh surface area graphitic mesoporous carbons (M‐mGMC; M=Ni, Fe, Co or Ni‐Fe) were synthesized via catalytic graphitization using a hard template based synthesis method. In house prepared SBA‐15 silica material was impregnated with metal precursors to obtain M/SBA‐15, template for M‐mGMC synthesis. These materials were studied using different material characterization techniques, such as nitrogen adsorption desorption (BET), X‐ray diffraction (XRD) analysis, Raman spectroscopy, X‐ray photoelectron spectroscopy (XPS), Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Specific surface area ranging from 1,227.9 m2 g−1 to 1,320.7 m2 g−1 was observed for four M‐mGMCs. Raman spectroscopy, XPS and wide angle XRD suggested presence of graphitic structure in these materials along with disorders. Electrocatalytic performance of these materials along with conventional carbon black (Vulcan XC‐72) were evaluated in a single‐stack proton exchange membrane fuel cell (PEMFC). Pt/NiFe‐mGMC exhibited enhanced electrocatalytic activity compared to Pt/Ni‐mGMC, Pt/Fe‐mGMC and Pt/Co‐mGMC electrocatalysts. However, Pt/NiFe‐mGMC lacked adequate proton transport in membrane electrode assembly (MEA) compared to Pt/Vulcan XC‐72. This exploratory study showed that NiFe‐mGMC may find application as electrocatalyst support material in PEMFC.
A Fin‐shaped Flow Channel Enhances Water Removal Performance in a Proton Exchange Membrane Fuel Cell
Authors: Liu H. C. , Yang W. M. , Tan J. , Cheng L. S. 
Published: January 2019

AbstractEffective water removal and transport in the flow channel is significantly important to the critical water management in proton exchange membrane fuel cells (PEMFCs). In this work, we proposed a fin‐shaped flow channel with hydrophobic walls to enhance liquid water removal from the surface of gas diffusion layer (GDL). Computational fluid dynamics simulations with volume‐of‐fluid method were carried out to investigate the liquid water behavior in the fin‐shaped flow channel. The results indicated that the hydrophobic fin‐shaped flow channel can not only effectively remove the water droplets on the GDL surface, but also accelerate their transport, avoiding water accumulation; the appropriate length, width and depth of the fin‐shaped grooves are 2.0 mm, 0.3 mm and 0.7 mm for comprehensive consideration of the water removal and transport, and the pressure drop throughout the channel. This work provides an alternative to conventional straight flow channel, and is helpful for the designing of high output PEMFCs.
Characterizations and accumulation of lacustrine source rocks in the Zhu I Depression, Pearl River Mouth Basin, China
Authors: Wang Xiaolong , He Sheng , Dong Tian , Xie Xiangyang , Xu Qinghai , Li Shaojie , Cheng Tian 
Published: January 2019

The study of source rocks is a key component in the exploration and discovery of hydrocarbon plays in the offshore petroliferous basins of China. Geochemical analyses, drilling, seismic, and microfossil data were integrated to document the formation mechanism of lacustrine source rocks contained in the Wenchang Formation in the Zhu I Depression of the Pearl River Mouth Basin, China. Several factors that control the development of lacustrine source rocks were evaluated in this study, including tectonics, sedimentary conditions, palaeoclimate, the supply of organic matter, and redox conditions. The deposition and occurrence of source rocks is a combined function of these factors. Lacustrine source rocks are characterized by high organic matter contents (average TOC value = 1.33 wt.%) and are dominated by type I and type II1–2 kerogen, which primarily originate from planktonic algae. The rifting of basement rocks, syn‐sedimentary faults, and palaeoclimate played significant roles in controlling the geochemical properties of the source rocks (e.g., controlling the abundance and types of organic matter). The Eocene lacustrine source rocks were deposited when the palaeoclimate was characterized by humid to semi‐humid, subtropical to tropical weather that did not have a stable temperature or humidity. Controlled by large‐scale faults, “Half‐graben patterns” and “Graben patterns” are the two main palaeotopographic patterns where the thermal stratification of deep lake water resulted in flourishing planktonic algae in its surface zones. Dysoxic to anoxic conditions prevailed during the deposition of the lacustrine source rocks. An underfilled basin situation caused the occurrence of abundant organic matter during the period of maximum surface flooding.
Late Silurian to Late Triassic seamount/oceanic plateau series accretion in Jinshajiang subduction mélange, Central Tibet, SW China
Authors: Liu Yin , Xiao Wenjiao , Windley Brian F. , Schulmann Karel , Li Rongshe , Ji Wenhua , Zhou Kefa , Sang Miao , Chen Yichao , Jia Xiaoliang , Li Liang 
Published: January 2019

The timing of the initial opening and subduction of the Palaeotethyan Ocean is currently highly debated, in particular regarding the Jinshajiang Ocean in the central Tibetan Plateau. This study presents four well‐constrained U–Pb zircon ages (422.4 ± 6.1, 336.4 ± 7.4, 272.3 ± 2.8, and 255.8 ± 3.4 Ma) of mafic blocks in the Jinshajiang Suture. These mafic blocks have a chemical oceanic island basalt (OIB) affinity. These facts, together with previously published data (236 Ma OIBs), may be interpreted as a series of seamounts/oceanic plateaux varying from Late Silurian to Late Triassic, which were accreted early in the subduction–accretion process. An andesite from the Jinshajiang Suture with continental arc characteristics yielded a zircon U–Pb weighted average age of 385.2 ± 6.6 Ma, implying that the subduction initiation may have occurred at least in the Middle Devonian. Our work suggests a long‐lived continuous accretion, which also puts an earlier initial opening time than previously thought. Taking into account the above data and integrated with relevant published information, we favour a long‐lived accretionary process accompanied with seamounts/oceanic plateaux, which provides robust new evidence for subduction‐related continental growth in the central Tibetan Plateau.
Pregnancy and adolescence entail similar neuroanatomical adaptations: A comparative analysis of cerebral morphometric changes
Authors: Carmona Susanna , Martínez‐García Magdalena , Paternina‐Die María , Barba‐Müller Erika , Wierenga Lara M. , Alemán‐Gómez Yasser , Pretus Clara , Marcos‐Vidal Luis , Beumala Laura , Cortizo Romina , Pozzobon Cristina , Picado Marisol , Lucco Florencio , García‐García David , Soliva Juan Carlos , Tobeña Adolf , Peper Jiska S. , Crone Eveline A. , Ballesteros Agustín , Vilarroya Oscar , Desco Manuel , Hoekzema Elseline 
Published: January 2019

AbstractMapping the impact of pregnancy on the human brain is essential for understanding the neurobiology of maternal caregiving. Recently, we found that pregnancy leads to a long‐lasting reduction in cerebral gray matter volume. However, the morphometric features behind the volumetric reductions remain unexplored. Furthermore, the similarity between these reductions and those occurring during adolescence, another hormonally similar transitional period of life, still needs to be investigated. Here, we used surface‐based methods to analyze the longitudinal magnetic resonance imaging data of a group of 25 first‐time mothers (before and after pregnancy) and compare them to those of a group of 25 female adolescents (during 2 years of pubertal development). For both first‐time mothers and adolescent girls, a monthly rate of volumetric reductions of 0.09 mm3 was observed. In both cases, these reductions were accompanied by decreases in cortical thickness, surface area, local gyrification index, sulcal depth, and sulcal length, as well as increases in sulcal width. In fact, the changes associated with pregnancy did not differ from those that characterize the transition during adolescence in any of these measures. Our findings are consistent with the notion that the brain morphometric changes associated with pregnancy and adolescence reflect similar hormonally primed biological processes.
Preoperative low skeletal muscle mass as a risk factor for pharyngocutaneous fistula and decreased overall survival in patients undergoing total laryngectomy
Authors: Bril Sandra I. , Pezier Thomas F. , Tijink Bernard M. , Janssen Luuk M. , Braunius Weibel W. , de Bree Remco 
Published: January 2019

AbstractBackgroundLow skeletal muscle mass (SMM) is associated with postoperative complications, prolonged hospital stay, and short overall survival (OS) in surgical oncology. We aimed to investigate this association in patients undergoing total laryngectomy (TL).MethodsA retrospective study was performed of patients undergoing TL. SMM was measured using CT or MRI scans at the level of the third cervical vertebra (C3).ResultsIn all, 235 patients were included. Low SMM was observed in 109 patients (46.4%). Patients with low SMM had more pharyngocutaneous fistulas (PCFs) than patients with normal SMM (34.9% vs 20.6%; P = .02) and prolonged hospital stay (median, 17 vs 14 days; P < .001). In multivariate analysis, low SMM (hazards ratio, 1.849; 95% confidence interval, 1.202‐2.843) and high N stage were significant prognosticators of decreased OS.ConclusionLow SMM is associated with PCF and prolonged hospital stay in patients undergoing TL. Low SMM is an independent prognostic factor for shorter OS.
Primary vs secondary zygomatic implant placement in patients with head and neck cancer—A 10‐year prospective study
Authors: Butterworth Chris J. 
Published: January 2019

AbstractBackgroundZygomatic implants can provide excellent remote anchorage to support the prosthetic rehabilitation of patients treated for maxillary and midfacial tumors.MethodsPatients who underwent zygomatic implant placement by the author between 2006 and 2016 as part of their oncology treatment were followed prospectively.ResultsForty‐nine consecutively treated patients received 131 zygomatic implants of which 9 failed and were removed from 4 patients; 24 patients (49%) received radiotherapy either before or after implant insertion. The overall 12‐month survival estimate was 94% and the 60‐month estimate was 92%.ConclusionsThe use of zygomatic implants in the management of maxillary and midfacial malignancy is a predictable prosthetic treatment modality to support complex oral and facial prostheses. Their use with or without free tissue transfer can provide effective prosthetic rehabilitation with high implant survival irrespective of the timing of placement or the need for adjuvant radiotherapy.Clinical SignificanceZygomatic Implants provide an excellent platform for the restoration of the dentition and facial structures affected by maxillary and midfacial malignant disease.