bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis and characterization of magnetic biochar adsorbents for the removal of Cr(VI) and Acid orange 7 dye from aqueous solution
Authors: Santhosh Chella , Daneshvar Ehsan , Tripathi Kumud Malika , Baltrėnas Pranas , Kim TaeYoung , Baltrėnaitė Edita , Bhatnagar Amit 
Published: June 2020

AbstractIn this study, different types of magnetic biochar nanocomposites were synthesized using the co-precipitation method. Two biochar materials, namely, sewage sludge biochar and woodchips biochar, were prepared at two different temperatures, viz., 450 and 700 °C. These biochars were further modified with magnetic nanoparticles (Fe3O4). The modified biochar nanocomposites were characterized using field emission–scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), Brunauer–Emmett–Teller (BET), SQUID analysis, X-ray photoelectron spectroscopy (XPS), and Fourier-transform infrared spectroscopy (FTIR). The potential of prepared adsorbents was examined for the removal of hexavalent chromium (Cr(VI)) and Acid orange 7 (AO7) dye from water as a function of various parameters, namely, contact time, pH of solution, amount of adsorbents, and initial concentrations of adsorbates. Various kinetic and isotherm models were tested to discuss and interpret the adsorption mechanisms. The maximum adsorption capacities of modified biochars were found as 80.96 and 110.27 mg g-1for Cr(VI) and AO7, respectively. Magnetic biochars showed high pollutant removal efficiency after 5 cycles of adsorption/desorption. The results of this study revealed that the prepared adsorbents can be successfully used for multiple cycles to remove Cr(VI) and AO7 from water.
Zwischen Sinngestaltung und Sinnbewahrung – Aneignungsweisen hochqualifizierter Dienstleistungsarbeit
Authors: Hardering Friedericke , Will-Zocholl Mascha 
Published: June 2020

ZusammenfassungAktuelle wissenschaftliche Auseinandersetzungen mit dem Sinnerleben Beschäftigter thematisieren vor allem die Problematik eines belastungsbedingten Sinnverlustes. Danach leiden immer mehr Beschäftigte darunter, ihre Arbeit nicht mehr als sinnvoll empfinden zu können. Eine solche Perspektive lässt allerdings die subjektiven Gestaltungsleistungen und Aneignungsformen von Arbeit aus dem Blick geraten. Diesen wendet sich der Beitrag zu, indem er danach fragt, inwieweit sich unterschiedliche Formen der Aneignung von Arbeit identifizieren lassen. Auf der Basis von Interviews mit vierzig hochqualifizierten Beschäftigten werden drei unterschiedliche Aneignungsmodi mit ihren inhärenten Ambivalenzen identifiziert. Jeder Modus steht für eine spezifische Sichtweise auf die eigenen Gestaltungsmöglichkeiten und für eine Form der primären Sinnzuschreibung in der Arbeit. Differenziert werden drei Idealtypen – „progressive Sinngestaltung“, „widerständige Sinnbewahrung“ sowie „pragmatische Sinnbewahrung“ –, anhand derer die Heterogenität und die Ambivalenzen der Aneignung professioneller Arbeit deutlich werden. Der Beitrag liefert so Erkenntnisse über die subjektiven Praktiken des Bedeutsam-Machens von Arbeit und trägt zur Erforschung des Zusammenspiels von Arbeit und Subjektivität bei.
A cross-population study of sexual dimorphism in the bony labyrinth
Authors: Uhl Alexandra , Karakostis Fotios Alexandros , Wahl Joachim , Harvati Katerina 
Published: June 2020

AbstractPrevious research found sexual dimorphism in the bony labyrinth of a Greek population sample (Osipov et al. 2013). This study intends to investigate the nature of this structure’s sexual dimorphism across populations of diverse geographic origin and to identify the effect of inter-population variation on the accuracy of determining sex using the bony labyrinth. Three population samples of known sex were analyzed originating from Europe (n = 30), Africa (n = 38), and North America (n = 30). The discriminant function developed in Osipov et al. (2013) was applied, and new function equations for sex estimation were developed. In addition, we used principal component analyses for investigating population differences, while bivariate tests were used to compare across population samples, sexes, and anatomical sides. A significant level of sexual dimorphism was found in all population samples, being driven by both size and shape differences. Discriminant functions for sex estimation were developed for all three population samples combined (71.4% accuracy) as well as separately (70–80% accuracy). The German sample was the least sexually dimorphic, whereas the North American sample exhibited the greatest sexual dimorphism. The size and shape of the bony labyrinth also significantly differed across population samples. The bony labyrinth is found to be sexually dimorphic across distinct population groups. Due to significant differences across our population samples, the accuracy of the previously proposed method for sex determination (Osipov et al., 2013) was relatively low. For this purpose, this study presented new functions, whose accuracy was tested in three distinct population samples.
Hydro-geochemical analysis and quality evaluation of surface water in the Mamu River basin, southeastern Nigeria
Authors: Ayogu Chinero Nneka , Maduka Raphael Iweanya , Ayogu Nnadozie Onyekachi , Njoku Chioma N. , Chinedu-Asogwa Nkechi C. 
Published: June 2020

AbstractMamu basin is a major tributary of Anambra drainage basin and a reservoir for wastewater from agricultural and runoff processes within the basin. Water quality of the Mamu basin was evaluated to determine its suitability for potable water and agrarian uses. This study utilized 24 water samples collected during the rainy and dry season from the upstream and downstream segments of the sub basins within River Mamu. Hdyro-geochemical analytical results were employed in the evaluation of several water quality criteria such as QWI, SAR, TH, SSP, MAR, PI, KR, Na% and %E of the water from the basin. The results suggested that the surface water is unfit for ingestion when compared with the WHO and Standard Organization of Nigeria (SON) standards. However, the QWI result showed that 66.7% of the water samples are good for consumption in the rainy season, while 75% of the samples are classified unfit for drinking in the dry season. Parameters such as Fe2+, Mn2+, TDS, temperature and total coliform (p < 0.001) exhibited temporal variation unlike pH, EC, Ce, Ca2+, Mg2+, Cl−, K + , NO3, PO43−, Na+, HCO3−, Zn2+, TSS, SO4, DO, BOD and turbidity which showed no response to season. Based on the results of SAR, TH, SSP, PI, KR, Na% and US salinity plots, the surface water is suitable for irrigation. Conversely, the MAR and %E results pointed out that water treatment is vital before use. The basin water is associated with permanent hardness due to CaCl2 coupled with the dominance of Mg2+ and SO42−. Gibbs plots and Stiff diagram showed that geology and dissolution process have an influence on the water chemistry via weathering and rock–mineral interactions, while chemical ratios and correlation coefficients (R2) point on anthropogenic activities.
The Household Structure Transition in China: 1982–2015
Authors: Li Ting , Fan Wenting , Song Jian 
Published: June 2020

AbstractChinese society has experienced a dramatic change over the past several decades, which has had a profound impact on its household system. Utilizing the Chinese national census and 1% population survey data from 1982 to 2015, this study demonstrates the transition of the Chinese household structure through typology analyses. Five typical regional household structure types—large lineal, large nuclear, small nuclear, mixed lineal, and small and diverse—are identified. Our findings demonstrate that since the 1980s, the household system in almost all Chinese regions has evolved from a large unitary model to a small diversified one. However, this evolutionary path diverged after 2000 and formed two distinct household structure systems. There are also significant regional differences in the transition trajectory. Influenced by developmental, cultural, and demographic factors, the regions exhibit four distinct transition paths: lineal tradition, nuclear retardation, smooth transition, and fast transition. On the basis of these results, we discuss family modernization and other theories in explaining the transition of the Chinese household structure.
Large‐scale analysis of the position‐dependent binding and regulation of human RNA binding proteins
Authors: Lin Jianan , Ouyang Zhengqing 
Published: June 2020

BackgroundRNA binding proteins (RBPs) play essential roles in the regulation of RNA metabolism. Recent studies have disclosed that RBPs achieve their functions via binding to their targets in a position‐dependent pattern on RNAs. However, few studies have systematically addressed the associations between the RBP’s functions and their positional binding preferences.MethodsHere, we present large‐scale analyses on the functional targets of human RBPs by integrating the enhanced cross‐linking and immunoprecipitation followed by sequencing (eCLIP‐seq) datasets and the shRNA knockdown followed by RNA‐seq datasets that are deposited in the integrated ENCyclopedia of DNA Elements in the human genome (ENCODE) data portal.ResultsWe found that (1) binding to the translation termination site and the 3′ untranslated region is important to most human RBPs in the RNA decay regulation; (2) RBPs’ binding and regulation follow a cell‐type specific pattern.ConclusionsThese analysis results show the strong relationship between the binding position and the functions of RBPs, which provides novel insights into the RBPs’ regulation mechanisms.
Competing Climate Change Responses: Reflections on EU Unilateral Regulation of International Transport Emissions in Light of Multilateral Developments
Authors: Dobson Natalie L. 
Published: June 2020

AbstractIn 2016, the International Civil Aviation Organization (ICAO) and International Maritime Organization (IMO) made important strides towards the regulation of emissions from international aviation and maritime transport. This was partially catalysed by the ‘ultimatum strategy’ of the European Union (EU), where the Union persistently threatened to take unilateral steps in the absence of multilateral action. As this article analyses, it appears that the Union is reluctant to relinquish its unilateral approach and align fully with both the ICAO Carbon Offsetting and Reduction Scheme and the IMO Global Data Collection Scheme. This raises questions under public international law as to the relationships between these competing measures. Amidst rising political pressures, this article considers the extent to which the unfolding multilateral policies of the ICAO and IMO may limit the regulatory competence of the EU. While the EU is an independent legal entity, it has been conferred far-reaching competences by its Member States who are themselves members of these other international organisations. Given the lack of clarity on clear hierarchical rules, an important role remains for the customary law of state jurisdiction in governing regulatory competence more generally. The final part of this article engages with recent discussions on the existence of an obligation to exercise jurisdictional self-restraint. It reflects on the tensions arising between respect for states’ regulatory autonomy and the prevention of ‘dangerous’ anthropogenic climate change.
ANGEL: efficient, and effective, node-centric community discovery in static and dynamic networks
Authors: Rossetti Giulio 
Published: June 2020

AbstractCommunity discovery is one of the most challenging tasks in social network analysis. During the last decades, several algorithms have been proposed with the aim of identifying communities in complex networks, each one searching for mesoscale topologies having different and peculiar characteristics. Among such vast literature, an interesting family of Community Discovery algorithms, designed for the analysis of social network data, is represented by overlapping, node-centric approaches. In this work, following such line of research, we propose Angel, an algorithm that aims to lower the computational complexity of previous solutions while ensuring the identification of high-quality overlapping partitions. We compare Angel, both on synthetic and real-world datasets, against state of the art community discovery algorithms designed for the same community definition. Our experiments underline the effectiveness and efficiency of the proposed methodology, confirmed by its ability to constantly outperform the identified competitors.
An Investigation of Effect of Stand-Off Distance on the Material Removal Characteristics and Surface Generation in Fluid Jet Polishing
Authors: Wang Chun Jin , Cheung Chi Fai , Ho Lai Ting , Loh Yee Man 
Published: June 2020

AbstractFluid jet polishing (FJP) is a versatile polishing process that has many advantages compared to other polishing processes. Stand-off distance (SOD) is one of the key parameters in fluid jet polishing. However, relatively little research work has been carried out to investigate its effect of SOD on material removal characteristics and surface generation in FJP. In this paper, a systematic investigation of the effect of SOD on the tool influence function and surface topography in FJP was conducted. Experiments were designed for FJP two kinds of materials corresponding to ductile and brittle materials. They are nickel copper (NiCu) alloy and BK7 optical glass, respectively. In this study, the SOD was varied from 2 to 35 mm. Analysis and discussions were made on its effect on the shape of TIF, material removal rate, and surface topography. It is interesting to note that the TIF shape becomes a Gaussian-like shape with large SOD both on NiCu and BK7, which provides a novel way to optimize the TIF in FJP. The variation of the material removal rate and surface roughness versus SOD on NiCu and BK7 were also determined from the experimental results. Moreover, the surface topography of NiCu and BK7 were characterized from the results measured from the white light interferometer and scan electron microscope. The outcome of the study provides a better understanding of the material removal characteristics and surface generation mechanism in FJP.
Shooting Yourself First in the Foot, then in the Head: Normative Democracy Is Suffocating, and then the Coronavirus Came to Light
Authors: Carr Paul R. 
Published: June 2020

AbstractThis text starts with the premise that ‘normative democracy’ has rendered our societies vulnerable and burdened with unaddressed social inequalities. I highlight three central arguments: (1) Social media, and, consequently, citizen engagement are becoming a significant filter that can potentially re-imagine the political, economic, and social worlds, which increasingly bleed over to how we might develop and engage with ‘democracy’; to this end, I introduce a brief case study on the nefarious interpretation of the killing of Jamal Khashoggi in 2018 to underscore the tension points in normative democracy; (2) Capitalism, or neoliberalism, needs to be more fully exposed, interrogated, and confronted if ‘normative, representative, hegemonic, electoral democracy’ is to be re-considered, re-imagined, and re-invented; the perpetuation of social inequalities lays bare the frailty of normative democratic institutions; (3) Covid-19 has exposed the fault lines and fissures of normative democracy, illustrating here the ‘common sense’ ways that power imbalances are sustained, which leaves little room for social solidarity; I present herein the case of the economic/labor dynamic in Quebec during the coronavirus. Ultimately, I believe the quest to re-imagine a more meaningful, critically engaged democracy, especially during a context that is imbued with a political, economic, and public health crisis, cannot be delayed much longer.
Influence of Peripartum Expectations, Mode of Delivery, and Perineal Injury on Women’s Postpartum Sexuality
Authors: Spaich Saskia , Link Georgina , Alvarez Stefanie Ortiz , Weiss Christel , Sütterlin Marc , Tuschy Benjamin , Berlit Sebastian 
Published: June 2020

Abstract

Background
Sexual health has been identified as an important factor for postpartum quality of life. Although pregnancy-related changes in anatomy and metabolism return to their prepregnancy state, female sexual function may not be at the level it was before birth because of physical and psychological changes.

Aim
The goal of our study was to explore the influence of the mode of delivery, perineal injury, and peripartum expectations on postpartum sexual function.

Methods
Between 2013 and 2018, 522 women were enrolled in this prospective investigation. At time of recruitment during the peripartum hospitalization, patients completed a standardized questionnaire addressing expectations concerning postpartum sexuality with focus on expected influence of the mode of delivery. Sexual function was evaluated using the Female Sexual Function Index (FSFI) and Sexual Activity Questionnaire (SAQ) at time of recruitment to evaluate baseline sexual function (4 weeks before pregnancy). Follow-up assessments were conducted at 3, 6, and 12 months postpartum.

Outcomes
Peripartum expectations, influence of the mode of delivery, and perineal injury were analyzed for their impact on women’s sexual function within 12 months postpartum by repetitive FSFI and SAQ assessments.

Results
A total of 522 women with 263 spontaneous vaginal deliveries, 41 operative vaginal deliveries, and 218 cesarean sections were analyzed. Although the data demonstrate a significant postpartum decline in sexual function at 3 and 6 months postpartum, sexual functioning converges to baseline prepregnancy values 12 months postpartum. This observation was independent of the mode of delivery and perineal injuries with no significant between-group differences at any of the analyzed time points. Apart from breastfeeding, for which negative anticipations resulted in impaired sexuality, women’s expectations (pertaining to quantity and quality of female orgasm, partner’s sexuality, fear of altered sexuality, frequency of intercourse, the mode of delivery) do not influence female sexual function at 12 months postpartum.

Clinical Implications
Deciphering the potential influence of patient expectations as well as pregnancy- and childbirth-related aspects on female postpartum sexuality will help in the effort to improve women’s postpartum sexual health.

Strengths & Limitations
As a strength of this study, postpartum sexuality was independently assessed with 2 different scoring systems (FSFI and SAQ). Limitations include that our follow-up is incomplete and amounts to about 2-thirds of patients who were initially recruited.

Conclusion
The mode of delivery and perineal trauma do not influence women’s postpartum sexual function. With the exception of breastfeeding, peripartum expectations do not result in altered sexual functioning at 12 months postpartum.
Late Jurassic Changmar Complex from the Shyok ophiolite, NW Himalaya: a prelude to the Ladakh Arc
Authors: Saktura Wanchese M. , Buckman Solomon , Nutman Allen P. , Bennett Vickie C. 
Published: June 2020

AbstractThe Shyok Suture in western Himalaya preserves a record of the opening and closure of the Mesotethys Ocean between the Shyok ophiolite and Karakoram terrane prior to the India–Eurasia collision. The formation age of the Shyok ophiolite was unknown, which impeded correlation with similar rocks along the Shyok Suture in Pakistan and corresponding sutures in Tibet. We report the first zircon U–Pb ages of a newly documented suite, here named the Changmar Complex. The Changmar Complex gabbronorite and plagiogranite yielded SHRIMP U–Pb zircon Late Jurassic ages of 159.4 ± 0.9 Ma and 151.9 ± 1.5 Ma. Their highly positive initial εHf values (+14.9 to +16.9) indicate a juvenile mantle origin, without continental crust influence on the magma source. The Shyok ophiolite represents either: (1) a separate island arc that preceded formation of the Cretaceous–Eocene Ladakh Arc; or (2) the oldest magmatism and early stage of the Ladakh Arc. Intrusive and extrusive mafic rocks from the Shyok Suture analysed in this study have typical supra-subduction zone enrichment characteristics in their geochemistry and are classified as part of the volcanic-arc ophiolite. The U–Pb age and Hf isotopic signatures for the Shyok ophiolite are similar to the Late Jurassic Matum Das tonalite within the Kohistan Arc; we therefore suggest that they are part of the same intra-oceanic island-arc system that formed in the Mesotethys Ocean prior to Late Jurassic time.
U–Pb dating of calcite in ancient carbonates for age estimates of syn- to post-depositional processes: a case study from the upper Ediacaran strata of Finnmark, Arctic Norway
Authors: Meinhold Guido , Roberts Nick M. W. , Arslan Arzu , Jensen Sören , Ebbestad Jan Ove R. , Högström Anette E. S. , Høyberget Magne , Agić Heda , Palacios Teodoro , Taylor Wendy L. 
Published: June 2020

AbstractResults of in situ U–Pb dating of calcite spherulites, cone-in-cone (CIC) calcite and calcite fibres from a calcareous concretion of the upper Ediacaran of Finnmark, Arctic Norway, are reported. Calcite spherulites from the innermost layers of the concretion yielded a lower intercept age of 563 ± 70 Ma, which, although imprecise, is within uncertainty of the age of sedimentation based on fossil assemblages. Non-deformed CIC calcite from the bottom part of the concretion yielded an age of 475 ± 25 Ma, which is interpreted as the age of CIC calcite formation during a period of fluid overpressure induced during burial of the sediments. Deformed CIC calcite from the top part of the concretion yielded an age of 418 ± 23 Ma, which overlaps with a known Caledonian tectono-metamorphic event, and indicates a potential post-depositional overprint at this time. Calcite fibres that grew in small fissures along spherulite rims, which are interpreted as a recrystallization feature during deformation and formation of a cleavage, gave an imprecise age of 486 ± 161 Ma. Our results show that U–Pb dating of calcite can provide age constraints for ancient carbonates and syn- to post-depositional processes that operated during burial and metamorphic overprinting.
Predictors of post-thyroidectomy hypocalcaemia: a systematic and narrative review
Authors: McMurran A E L , Blundell R , Kim V 
Published: June 2020

AbstractObjectiveHypocalcaemia is the most common complication after total or completion thyroidectomy. This study assesses recent evidence on predictive factors for post-thyroidectomy hypocalcaemia in order to identify the patients affected and aid prevention.MethodTwo authors independently assessed articles and extracted data to provide a narrative synthesis. This study was an updated systematic search and narrative review regarding predictors of post-thyroidectomy hypocalcaemia using the Ovid Medline, Embase, Cochrane and Cinahl databases. Results were limited to papers published from January 2012 to August 2019.ResultsSixty-three observational studies with a total of 210 401 patients met the inclusion criteria. The median incidence was 27.5 per cent for transient biochemical hypocalcaemia, 12.5 per cent for symptomatic hypocalcaemia and 2.2 per cent for permanent hypocalcaemia. The most frequent statistically significant predictor of hypocalcaemia was peri-operative parathyroid hormone level. Symptomatic hypocalcaemia and permanent hypocalcaemia were seen more frequently in patients undergoing concomitant neck dissection.ConclusionMany factors have been studied for their link to post-thyroidectomy hypocalcaemia, and this study assesses the recent evidence presented in each case.