bluuebunny/crossref_metadata_2025 huggingface dataset:
Basin-wide spatial conditional extremes for severe ocean storms
Authors: Shooter Rob , Tawn Jonathan , Ross Emma , Jonathan Philip
Published: August 2020

Physical considerations and previous studies suggest that extremal dependence between ocean storm severity at two locations exhibits near asymptotic dependence at short inter-location distances, leading to asymptotic independence and perfect independence with increasing distance. We present a spatial conditional extremes (SCE) model for storm severity, characterising extremal spatial dependence of severe storms by distance and direction. The model is an extension of Shooter et al. 2019 (Environmetrics 30, e2562, 2019) and Wadsworth and Tawn (2019), incorporating piecewise linear representations for SCE model parameters with distance and direction; model variants including parametric representations of some SCE model parameters are also considered. The SCE residual process is assumed to follow the delta-Laplace form marginally, with distance-dependent parameter. Residual dependence of remote locations given conditioning location is characterised by a conditional Gaussian covariance dependent on the distances between remote locations, and distances of remote locations to the conditioning location. We apply the model using Bayesian inference to estimates extremal spatial dependence of storm peak significant wave height on a neighbourhood of 150 locations covering over 200,000 km2 in the North Sea.
Oxygen separation from air by the combined temperature swing and pressure swing processes using oxygen storage materials Y1−x(Tb/Ce)xMnO3+δ
Authors: Klimkowicz Alicja , Hashizume Takao , Cichy Kacper , Tamura Sayaka , Świerczek Konrad , Takasaki Akito , Motohashi Teruki , Dabrowski Bogdan
Published: August 2020

Hexagonal Y1−xRxMnO3+δ (R: other than Y rare earth elements) oxides have been recently introduced as promising oxygen storage materials that can be utilized in the temperature swing processes for the oxygen separation and air enrichment. In the present work, the average and local structures of Tb- and Ce-substituted Y0.7Tb0.15Ce0.15MnO3+δ and Y0.6Tb0.2Ce0.2MnO3+δ materials were studied, and their oxygen storage-related properties have been evaluated. The fully oxidized samples show the presence of a significant amount of the highly oxygen-loaded the so-called Hex3 phase, attaining an average oxygen content of δ ≈ 0.41 for both compositions. Extensive studies of the temperature swing process conducted in air and N2 over the temperature range of 180–360 °C revealed large and reversible oxygen content changes taking place with only a small temperature differences and the high dependence on the oxygen partial pressure. Significant for practical performance, the highest reported for this class of compounds, oxygen storage capacity of 1900 μmol O g−1 in air was obtained for the optimized materials and swing process. In the combined temperature–oxygen partial pressure swing process, the oxygen storage capacity of 1200 μmol O g−1 was achieved.
Bidirectional Associations between Popularity, Popularity Goal, and Aggression, Alcohol Use and Prosocial Behaviors in Adolescence: A 3-Year Prospective Longitudinal Study
Authors: Malamut Sarah T. , van den Berg Yvonne H. M. , Lansu Tessa A. M. , Cillessen Antonius H. N.
Published: August 2020

Adolescents’ popularity and popularity goal have been shown to be related to their aggression and alcohol use. As intervention efforts increasingly aim to focus on prosocial alternatives for youth to gain status, it is essential to have a comprehensive understanding of how popularity and popularity goal are associated with aggression and substance use as well as prosocial behaviors over time. The current study examined the bidirectional associations of aggression (overt and relational aggression), alcohol use, and prosocial behavior with popularity and popularity goal in adolescence across 3 years using cross-lagged panel analyses. Participants were 839 Dutch adolescents (Mage = 13.36, SD = 0.98; 51.3% girls). The results indicated that popularity was consistently positively associated with popularity goal, but popularity goal did not significantly predict subsequent popularity. Popularity positively predicted elevated aggression and alcohol use, but lower levels of prosocial behavior. For the full sample, alcohol use and overt aggression in grade 7 both predicted subsequent popularity in grade 8. However, when considering gender differences, overt aggression no longer was a significant predictor of popularity. These results were discussed in terms of the dynamic interplay between popularity, popularity goal, and behaviors, and in terms of implications for prevention and intervention efforts.
Invariant spectral foliations with applications to model order reduction and synthesis
Authors: Szalai Robert
Published: August 2020

The paper introduces a technique that decomposes the dynamics of a nonlinear system about an equilibrium into low-order components, which then can be used to reconstruct the full dynamics. This is a nonlinear analogue of linear modal analysis. The dynamics is decomposed using Invariant Spectral Foliation (ISF), which is defined as the smoothest invariant foliation about an equilibrium and hence unique under general conditions. The conjugate dynamics of an ISF can be used as a reduced order model. An ISF can be fitted to vibration data without carrying out a model identification first. The theory is illustrated on a analytic example and on free-vibration data of a clamped-clamped beam.
The philosophy of Vladimir Solovyov as the subject matter of Yuri Govorukha-Otrok’s literary criticism
Authors: Zakharova Elizaveta
Published: August 2020

Vladimir Solovyov’s aesthetic theory has been the subject of much research. However, aesthetic views of the philosopher’s contemporaries are analyzed less frequently. The purpose of this article is to consider the views of Yuri Govorukha-Otrok on the aesthetic ideas of Solovyov in relation to the issues of national identity. Despite the discrepancy in the interpretation of such concepts as “culture,” “national idea,” or “truth” the very fact of the polemics between the philosopher and the literary critic proves the continuity of the religious and the philosophical dimensions of literary criticism. This study analyzes Govorukha-Otrok’s critical papers of Solovyov’s work, allowing for the possibility to compare integral ideological and philosophical systems in order to understand the influence of Govorukha-Otrok’s views on the whole body of Solovyov’s ideas.
Talk2Nav: Long-Range Vision-and-Language Navigation with Dual Attention and Spatial Memory
Authors: Vasudevan Arun Balajee , Dai Dengxin , Van Gool Luc
Published: August 2020

The role of robots in society keeps expanding, bringing with it the necessity of interacting and communicating with humans. In order to keep such interaction intuitive, we provide automatic wayfinding based on verbal navigational instructions. Our first contribution is the creation of a large-scale dataset with verbal navigation instructions. To this end, we have developed an interactive visual navigation environment based on Google Street View; we further design an annotation method to highlight mined anchor landmarks and local directions between them in order to help annotators formulate typical, human references to those. The annotation task was crowdsourced on the AMT platform, to construct a new Talk2Nav dataset with 10, 714 routes. Our second contribution is a new learning method. Inspired by spatial cognition research on the mental conceptualization of navigational instructions, we introduce a soft dual attention mechanism defined over the segmented language instructions to jointly extract two partial instructions—one for matching the next upcoming visual landmark and the other for matching the local directions to the next landmark. On the similar lines, we also introduce spatial memory scheme to encode the local directional transitions. Our work takes advantage of the advance in two lines of research: mental formalization of verbal navigational instructions and training neural network agents for automatic way finding. Extensive experiments show that our method significantly outperforms previous navigation methods. For demo video, dataset and code, please refer to ourproject page.
Social constructionism and climate science denial
Authors: Hansson Sven Ove
Published: August 2020

It has been much debated whether epistemic relativism in academia, for instance in the form of social constructivism, the strong programme, deconstructionism, and postmodernism, has paved the way for the recent upsurge in science denial, in particular climate science denial. In order to provide an empirical basis for this discussion, an extensive search of the social science literature was performed. It showed that in the 1990s, climate science was a popular target among academic epistemic relativists. In particular, many STS scholars used it as an allegedly clear example of claims by natural scientists that should be treated as mere social constructions, rather than as reports on the actual state of the natural world. A few connections between social constructivists and corporate science denialism were also uncovered, but the extent of such connections could not be determined. With few exceptions, the stream of criticism of climate science from academic relativists has dwindled since the 1990s. One reason for this seems to be that the contrarian position lost its attraction when it became associated with corporate and right-wing propagandists.
Correction to: Integrating the palynostratigraphy, petrography, X-ray diffraction and scanning electron microscopy data for evaluating hydrocarbon reservoir potential of Jurassic rocks in the Kala Chitta Range, Northwest Pakistan
Authors: Ahmad Sajjad , Wadood Bilal , Khan Suleman , Ahmed Sohail , Ali Fahad , Saboor Abdus
Published: August 2020

In the original publication of the article.
The effect of liraglutide on nonalcoholic fatty liver disease in type 2 diabetes mellitus
Authors: Zhang Xueyang , Bai Ran , Jia Yong , Zong Junwei , Wang Yongbo , Dong Yanan
Published: August 2020

Aims

The objective is to investigate the effects of liraglutide on nonalcoholic fatty liver disease in type 2 diabetes mellitus.

Materials and methods

Thirty-two patients with T2DM and NAFLD admitted to the Third Affiliated Hospital of Dalian Medical University from December 2014 to December 2016 were selected, including 11 females and 21 males, aged 39.34 ± 8.54 years old. The patients were given liraglutide on the basis of their original hypoglycemic regimen.

Results

After 3 months treatment of liraglutide, FPG was reduced from 8.54 ± 2.21 mmol/L to 6.90 ± 1.73 mmol/L. HbA1c was reduced from 9.72 ± 1.95 to 7.78 ± 1.99. WC was reduced from 103.27 ± 9.92 kg to 93.97 ± 8.35 kg. BMI was reduced from 30.56 ± 4.06 kg/m2to 28.01 ± 3.12 kg/m2. FLI was reduced from 79.23 ± 16.56 to 58.83 ± 19.75. The differences were statistically significant (p < 0.001). TG was reduced from 2.95 ± 2.13 mmol/L to 2.27 ± 1.31 mmol/L. The difference was significant (p < 0.01). Meanwhile, HOMA-IR was reduced from 1.504 ± 0.002 to 1.503 ± 0.002. GGT was reduced from 62.63 ± 71.61 U/L to 38.13 ± 30.13 U/L. AST was reduced from 27.25 ± 13.74 U/L to 25.44 ± 16.69 U/L. The differences were statistically significant (p < 0.05). After treatment, FCP, TC, HDL-C, LDL-C, ALT, and HOMA-β were also improved compared with before treatment, but the difference was not statistically significant (p > 0.05).

Conclusion

In addition to effectively lowering glucose and improving islet resistance, liraglutide could also improve obesity and adjust blood lipids. However, the improvement of islet function might not be significant after 3 months of treatment. Liraglutide could reduce liver fat accumulation in patients with T2DM and NAFLD.
Metropolitan Reclassification and the Urbanization of Rural America
Authors: Johnson Kenneth M. , Lichter Daniel T.
Published: August 2020

We highlight the paradoxical implications of decadal reclassification of U.S. counties (and America’s population) from nonmetropolitan to metropolitan status between 1960 and 2017. Using data from the U.S. Census Bureau, we show that the reclassification of U.S. counties has been a significant engine of metropolitan growth and nonmetropolitan decline. Over the study period, 753—or nearly 25% of all nonmetropolitan counties—were redefined by the Office of Management and Budget (OMB) as metropolitan, shifting nearly 70 million residents from nonmetropolitan to metropolitan America by 2017. All the growth since 1970 in the metropolitan share of the U.S. population came from reclassification rather than endogenous growth in existing metropolitan areas. Reclassification of nonmetropolitan counties also had implications for drawing appropriate inferences about rural poverty, population aging, education, and economic growth. The paradox is that these many nonmetropolitan “winners”—those experiencing population and economic growth—have, over successive decades, left behind many nonmetropolitan counties with limited prospects for growth. Our study provides cautionary lessons regarding the commonplace narrative of widespread rural decline and economic malaise but also highlights the interdependent demographic fates of metropolitan and nonmetropolitan counties.
Disaster Risk Science: A Geographical Perspective and a Research Framework
Authors: Shi Peijun , Ye Tao , Wang Ying , Zhou Tao , Xu Wei , Du Juan , Wang Jing’ai , Li Ning , Huang Chongfu , Liu Lianyou , Chen Bo , Su Yun , Fang Weihua , Wang Ming , Hu Xiaobin , Wu Jidong , He Chunyang , Zhang Qiang , Ye Qian , Jaeger Carlo , Okada Norio
Published: August 2020

In this article, we recall the United Nations’ 30-year journey in disaster risk reduction strategy and framework, review the latest progress and key scientific and technological questions related to the United Nations disaster risk reduction initiatives, and summarize the framework and contents of disaster risk science research. The object of disaster risk science research is the “disaster system” consisting of hazard, the geographical environment, and exposed units, with features of regionality, interconnectedness, coupling, and complexity. Environmental stability, hazard threat, and socioeconomic vulnerability together determine the way that disasters are formed, establish the spatial extent of disaster impact, and generate the scale of losses. In the formation of a disaster, a conducive environment is the prerequisite, a hazard is the necessary condition, and socioeconomic exposure is the sufficient condition. The geographical environment affects local hazard intensity and therefore can change the pattern of loss distribution. Regional multi-hazard, disaster chain, and disaster compound could induce complex impacts, amplifying or attenuating hazard intensity and changing the scope of affected areas. In the light of research progress, particularly in the context of China, we propose a three-layer disaster risk science disciplinary structure, which contains three pillars (disaster science, disaster technology, and disaster governance), nine core areas, and 27 research fields. Based on these elements, we discuss the frontiers in disaster risk science research.
Cytokine storm in aged people with CoV-2: possible role of vitamins as therapy or preventive strategy
Authors: Fiorino Sirio , Gallo Claudio , Zippi Maddalena , Sabbatani Sergio , Manfredi Roberto , Moretti Renzo , Fogacci Elisa , Maggioli Caterina , Travasoni Loffredo Francesca , Giampieri Enrico , Corazza Ivan , Dickmans Christoph , Denitto Claudio , Cammarosano Michele , Battilana Michele , Orlandi Paolo Emilio , Del Forno Francesco , Miceli Francesco , Visani Michela , Acquaviva Giorgia , De Leo Antonio , Leandri Paolo , Hong Wandong , Brand Thomas , Tallini Giovanni , Jovine Elio , Jovine Roberto , de Biase Dario
Published: August 2020

Background

In December 2019, a novel human-infecting coronavirus, SARS-CoV-2, had emerged. The WHO has classified the epidemic as a “public health emergency of international concern”. A dramatic situation has unfolded with thousands of deaths, occurring mainly in the aged and very ill people. Epidemiological studies suggest that immune system function is impaired in elderly individuals and these subjects often present a deficiency in fat-soluble and hydrosoluble vitamins.

Methods

We searched for reviews describing the characteristics of autoimmune diseases and the available therapeutic protocols for their treatment. We set them as a paradigm with the purpose to uncover common pathogenetic mechanisms between these pathological conditions and SARS-CoV-2 infection. Furthermore, we searched for studies describing the possible efficacy of vitamins A, D, E, and C in improving the immune system function.

Results

SARS-CoV-2 infection induces strong immune system dysfunction characterized by the development of an intense proinflammatory response in the host, and the development of a life-threatening condition defined as cytokine release syndrome (CRS). This leads to acute respiratory syndrome (ARDS), mainly in aged people. High mortality and lethality rates have been observed in elderly subjects with CoV-2-related infection.

Conclusions

Vitamins may shift the proinflammatory Th17-mediated immune response arising in autoimmune diseases towards a T-cell regulatory phenotype. This review discusses the possible activity of vitamins A, D, E, and C in restoring normal antiviral immune system function and the potential therapeutic role of these micronutrients as part of a therapeutic strategy against SARS-CoV-2 infection.
Ethnic and Gender Differences in 10-Year Coronary Heart Disease Risk: a Cross-Sectional Study in Hawai‘i
Authors: Ing Claire Townsend , Ahn Hyeong Jun , Kawakami Rachel , Grandinetti Andrew , Seto Todd B. , Kaholokula Joseph Keawe’aimoku
Published: August 2020

Background

Cardiovascular disease (CVD) is the leading cause of death in the US. In Hawai‘i, Filipinos and Native Hawaiians have the highest rates of CVD-related risk factors. CVD risk across these ethnic groups has not been examined. This cross-sectional study examines 10-year CVD risk as determined by the Framingham Risk Score (FRS) across ethnic groups in Hawai‘i, controlling for clinical, demographic, and psychosocial factors.

Methods

This study includes secondary data analysis of the Kohala Health Research Project dataset. All non-pregnant adults (≥ 18 years of age) who resided in the community of interest during the study period were eligible to participate with 1462 participants completing the clinical examination and surveys. This analysis included clinical, demographic, and psychosocial variables. Ethnic differences were examined using the chi-squared test and one-way ANOVA. Multiple linear regression on FRS was conducted and least square means of FRS were calculated.

Results

Data from 1146 individuals were analyzed. Participants were 44.4% Native Hawaiian, 15.4% Filipino, 15.3% Japanese, and 25% non-Hispanic White; 55.4% were female and had a mean age of 48.8 years. For males, the unadjusted Japanese mean FRS was significantly higher compared with the other ethnic groups. For females, Filipino and Japanese mean FRS were significantly higher compared with Native Hawaiians and non-Hispanic Whites. In the fully adjusted model, there were no ethnic group differences in FRS among males and Filipinos had significantly higher FRS compared with non-Hispanic White among females.

Conclusions

This cross-sectional community-based epidemiological study examined ethnic differences in CVD risk after adjusting for age, depression, social support, and acculturation. The results suggest that some ethnic differences in CVD risk persist even after controlling for confounders but that recalibration of risk assessment is necessary.
Effects of computerized grapho-phonological training on literacy acquisition and vocabulary knowledge in children with an immigrant background learning German as L2
Authors: Konerding Marita , Bergström Kirstin , Lachmann Thomas , Klatte Maria
Published: August 2020

As a consequence of globalization and migration, the number of children receiving literacy instruction in their second language (L2) is high and still increasing. Therefore, teachers need instruction methods that are effective in both L1 and L2 learners. Here, we investigate the effectiveness of a computerized training program combining phoneme perception, phonological awareness, and systematic phonics, in a sample of second-graders (N = 26) instructed in German as L2. Based on prior evidence concerning (1) literacy acquisition in L2 and (2) effects of literacy development on oral language abilities, we expected significant training effects on children’s literacy skills and vocabulary knowledge. The children of the training group worked through the program during school lessons, 20 min per day, for a period of 8 weeks. The controls continued to receive standard classroom instruction. German tests of phonological awareness, reading, spelling, and vocabulary were performed at three time points (pretest, immediate posttest, and follow-up after 9 weeks). Analyses confirmed that improvements in phonological awareness, spelling, and vocabulary between pretest and posttest were stronger in the training group when compared to the controls. For spelling and vocabulary, these effects were still significant at follow-up. Effect sizes were medium to high. For the reading measures, no group differences were found. In sum, the results yield further evidence for the effectiveness of phonics-based literacy instruction in L2 learners, and for the beneficial effects of basic literacy skills on novel word learning.
Können Viertklässlerinnen und Viertklässer Unterrichtsqualität valide einschätzen? Ergebnisse zum Fach Deutsch
Authors: Stahns Ruven , Rieser Svenja , Hußmann Anke
Published: August 2020

Die Bedeutung der Dimensionen Klassenführung, konstruktive Unterstützung und kognitive Aktivierung für erfolgreiche Lernprozesse von Schüler(inne)n ist Gegenstand aktueller Studien zum Unterricht unterschiedlicher Fächer. InLarge-Scale-Studien wird der Unterricht häufig aus der Perspektive von Schüler(inne)n eingeschätzt. Die Validität dieser Einschätzungen wird kritisch diskutiert. Im Rahmen derInternationalen Grundschul-Lese-Untersuchung 2016(IGLU) wurden Viertklässler(innen) gebeten, ihren Deutschunterricht hinsichtlich einiger Merkmale einzuschätzen, die diesen drei Dimensionen zugeordnet werden können. In der vorliegenden Studie wird zur Prüfung der Validität dieser Einschätzungen untersucht, ob die Kinder in ihren Urteilen zwischen den drei Dimensionen differenzieren und ob sich Zusammenhänge zwischen den Einschätzungen und der Leseleistung der Grundschüler(innen) zeigen. Die Datengrundlage der Untersuchung bilden Angaben der im Rahmen von IGLU 2016 befragten Viertklässler(innen) (N = 3797, 192 Klassen) und die Leistungswerte aus dem IGLU-Lesetest. Mittels konfirmatorischer Mehrebenen-Faktorenanalysen wird geprüft, ob sich eine Struktur mit drei Faktoren in den Daten aus den Fragebogenerhebungen findet. Die Zusammenhänge mit der Leistung werden mithilfe von doppelt-latenten Mehrebenen-Regressionsmodellen geschätzt. Die drei Dimensionen lassen sich mit den Daten abbilden. Zudem hängt die Einschätzung der Klassenführung auf individueller Ebene und auf Klassenebene mit der Leseleistung zusammen. Die Einschätzung der kognitiven Aktivierung hängt auf Klassenebene mit der Leistung zusammen. Für die konstruktive Unterstützung lässt sich auf individueller Ebene ein bedeutsamer Zusammenhang nachweisen. Werden die drei Dimensionen gemeinsam in einem Modell betrachtet, sind die Zusammenhänge mit der Leistung auf Klassenebene nicht mehr nachzuweisen.
Fabrication of Ceramic, Hollow-Fiber Membrane: The Effect of Bauxite Content and Sintering Temperature
Authors: Ismail Nurul Jannah , Othman Mohd Hafiz Dzarfan , Abu Bakar Suriani , Jaafar Juhana , Rahman Mukhlis A
Published: August 2020

The negative effects of dye-contaminated wastewater on humans and the environment are well known, so the wastewater must be treated carefully before discharge into the environment. To overcome those impacts, the search for environmentally friendly and low-cost materials is essential, especially in developing countries The objective of the present study was to determine the feasibility of using bauxite from Malaysia as a new and efficient ceramic, hollow-fiber membrane for the degradation of reactive dyes in wastewater. A porous, hollow-fiber membrane was fabricated from bauxite (BHFM) using a phase-inversion technique, followed by sintering at various temperatures. The BHFM consisted of two types of voids, having either a finger-like or a sponge-like structure. As the sintering temperature was increased, the porosity of the BHFM decreased from 46.5 to 9.5%. The greatest mechanical strength of 308.1 MPa was achieved when the BHFM was loaded with 55 wt.% of bauxite and sintered at 1450°C. The remaining 45 wt.% consisted of solvent, polymer binder, and dispersant. The BHFM functioned well as a membrane for microfiltration and a support membrane for ultrafiltration. BHFM with loading of 45 wt.%, 50 wt.%, and 55 wt.% successfully eliminated 90%, 94%, and 98% of 10 ppm reactive dye (RB5) when sintered at the highest temperature.
Electricity infrastructure and innovation in the next phase of energy transition—amendments to the technology innovation system framework
Authors: Bettin Steffen S.
Published: August 2020

A new phase of energy transition makes auxiliary technologies such as energy storage and other flexibility options more important. Economic policy that aims to steer this transition needs to grasp the complex system dynamics underlying energy and society. This conceptual article gives an overview of energy technology innovation theories that exemplify the growing importance of flexibility for electricity usage. First, the article presents different conceptualizations of technology innovation and diffusion. Second, how energy systems are embedded in physical infrastructures and social power relations is shown with a brief history of electricity in contemporary industrialized societies. Third, energy innovation is discussed in context of challenges of the upcoming energy transition. Fourth, energy technology innovations are further contextualized in light of insights from political economy and energy social sciences. Finally, the discussed approaches are synthesized to amend the holistic technology innovation system approach for studying energy technology innovations such as energy storage.
Perioperative mortality at Tibebe Ghion Specialized Teaching Hospital, Ethiopia: A longitudinal study design
Authors: Tarekegn Fantahun , Asfaw Gebrehiwot , Mossie Mulat
Published: August 2020

ABSTRACT

Background:

Perioperative mortality rate is the basic indicator of anesthesia and surgery safety in a country of health policy. However, documentation is poor in low and middle income countries. So we developed a simple prospective data collection tool for perioperative mortality determination at Tibebe Ghion Specialized Teaching Hospital, Ethiopia.

Material and methods:

The prospective electronic based data collection was done at Tibebe Ghion Specialized Teaching Hospital, Ethiopia with case specific of perioperative data. We compared patients with mortality at 24 h, and 48 h by Kaplan-Meier (KM) survival analysis. Logistic regression model was used to evaluate the effect of different surgical procedures on mortality.

Results:

From August 2019, to December 2019 data were taken from 946 cases at Tibebe Ghion Specialized Teaching Hospital. We excluded 61 (6.44%) cases with missing data information. The logistic regression analysis for 24 h mortality showed that urology and general surgery (OR = 8.03 [95% CI, 3.98 to 47.33]; P = 0.0002),neurosurgery (OR = 4.77, [95% CI,2.58–17.70]; P = 0.01), orthopedics (OR = 1.21, [95% CI,0.56–6.89]; P = 0.003), emergency surgery (OR = 2.76 [95% CI,1.03–10.51]; P = 0.04) and trauma (OR = 6.94 [95% CI,3.43–26.32]; P = 0.002) were associated with high risk of mortality (Table 3) as compared to cesarean section delivery. These significant relations were also revealed at 48 h of mortality. Other Surgeries and pediatrics category were not correlated to 24 h and 48 h of mortality.

Conclusion and recommendation:

There were a significant higher magnitude of mortality recorded over Urology and general surgeries, neurosurgery, orthopedic surgery, emergency surgery and trauma compared with cesarean section delivery at Tibebe Ghion Specialized Teaching Hospital. In addition, we observed the mortality rate differences between each surgical category.

Tibebe Ghion Specialized Teaching Hospital should emphasis on monitoring and evaluation of patients’ outcome for the reduction of mortality. We also recommended doing this research work at multiple centers of referral hospitals for better valid information.

Highlights:
Equatorial Plasma Bubble Occurrence Under Propagation of MSTID and MLT Gravity Waves
Authors: Takahashi H. , Wrasse C. M. , Figueiredo C. A. O. B. , Barros D. , Paulino I. , Essien P. , Abdu M. A. , Otsuka Y. , Shiokawa K.
Published: August 2020

We observed a signature of equatorial plasma bubbles (EPBs) followed by a medium‐scale traveling ionospheric disturbance (MSTID) crossing the solar terminator over the geomagnetic equator during the period of post‐sunset rise (PSSR) of the F layer. Simultaneous observations of the EPBs and the MSTIDs by ground‐based Global Navigation Satellite System receivers and OI 630‐nm imagers, ionospheric parameters by ionosondes, and mesosphere–lower thermosphere (MLT) gravity waves (MLT‐GWs) by OH airglow imagers have been carried out in the equatorial and low‐latitude region of Brazil. On 16–17 September 2015, MSTIDs with very fast horizontal phase speeds, propagating toward northeast (NE), were observed over the latitude region of 0–30°S in the afternoon to evening time zone. It was geomagnetically quiet time (Kp: 2–3). An EPB development was observed after one of the MSTIDs crossed the solar terminator at 22:00 UT. Large‐scale MLT‐GWs with slower phase speeds were also observed both at São João do Cariri (7.5°S, 35.0°W) propagating from southwest (SW) to NE and Cachoeira Paulista (22.7°S, 45.0°W) propagating northward. This is to report on what we consider as a signature of direct seeding of EPBs by an MSTID that was likely induced by a secondary GW from tropospheric deep cloud convections to the south. This study highlights a possible dynamical process from the troposphere to ionosphere via this vertical coupling process over the 2,500 km of horizontal distance.
Combined Seismic and Geodetic Analysis Before, During, and After the 2018 Mount Etna Eruption
Authors: Mattia M. , Bruno V. , Montgomery‐Brown E. , Patanè D. , Barberi G. , Coltelli M.
Published: August 2020

In December 2018, Etna volcano experienced one of the largest episodes of unrest since the installation of geophysical monitoring networks in 1970. The unrest culminated in a short eruption with a small volume of lava erupted, a significant seismic crisis and deformation of the entire volcanic edifice of magnitude never recorded before at Mount Etna. Here we describe the evolution of the 2018 eruptive cycle from the analysis of seismic and geodetic data collected in the months preceding, during, and following the intrusion. We model the space‐time evolution of high‐rate deformation data starting from the active source previously identified from deformation data and the propagation of seismicity in a 3‐D velocity model. The intrusion model suggests emplacement of two dikes: a smaller dike located beneath the eruptive fissure and a second, deeper dike between 1 and 5 km below sea level that opened ~2 m. The rise and eruption of magma from the shallower dike did not interrupt the pressurization of a long‐lasting deeper reservoir (~6 km) that induced continuous inflation and intense deformation of the eastern flank. Shortly after the intrusion, on 26 December 2018, a ML4.8 earthquake occurred near Pisano, destroying buildings and roads in two villages. We propose a time‐dependent intrusion model that supports the hypothesis of the inflation inducing flank deformation and that this process has been active since September 2018.
Permeability Enhancement From a Hydraulic Stimulation Imaged With Ground Penetrating Radar
Authors: Shakas A. , Maurer H. , Giertzuch P.‐L. , Hertrich M. , Giardini D. , Serbeto F. , Meier P.
Published: August 2020

We present evidence of permeability enhancement from hydraulic stimulation experiments in fractured crystalline rock. A total of 9.49 m3 was injected in two fractured intervals of a 300 m long borehole. Repeated Ground Penetrating Radar (GPR) measurements in the same borehole were carried out prior to and following the stimulation. The initial measurements revealed fractures in the vicinity of the borehole that could be traced up to distances of 50 m away. The data measured post‐stimulation were used in a difference‐imaging approach to illuminate changes in the GPR reflections caused by the stimulations. The changes delineate the enhancement of a large and complex fracture network. These changes likely correspond to changes in local aperture, thus permeability. Our results indicate that borehole GPR yields unique information on subtle changes in hydraulic properties within a relatively large volume and provides a new perspective on the characterization and monitoring of deep geothermal reservoirs.
Routes of the Upper Branch of the Atlantic Meridional Overturning Circulation according to an Ocean State Estimate
Authors: Rousselet Louise , Cessi Paola , Forget Gael
Published: August 2020

The origins of the upper branch of the Atlantic meridional overturning circulation (AMOC) are traced with backward‐in‐time Lagrangian trajectories, quantifying the partition of volume transport between different routes of entry from the Indo‐Pacific into the Atlantic. Particles are advected by the velocity field from a recent release of “Estimating the Circulation and Climate of the Ocean” (ECCOv4). This global time‐variable velocity field is a dynamically consistent interpolation of over 1 billion oceanographic observations collected between 1992 and 2015. Of the 13.6 Sverdrups (1 Sv = 106 m3/s) flowing northward across 6°S, 15% enters the Atlantic from Drake Passage, 35% enters from the straits between Asia and Australia (Indonesian Throughflow), and 49% comes from the region south of Australia (Tasman Leakage). Because of blending in the Agulhas region, water mass properties in the South Atlantic are not a good indicator of origin.
Antarctic Bottom Water Warming in the Brazil Basin: 1990s Through 2020, From WOCE to Deep Argo
Authors: Johnson Gregory C. , Cadot Chanelle , Lyman John M. , McTaggart Kristene E. , Steffen Elizabeth L.
Published: August 2020

A warming trend of 2.1 (±0.4) m °C yr−1 in bottom waters (4,500 to 5,900 dbar) spreading north from Antarctica through the Brazil Basin is quantified by comparing 2019–2020 data from a new Deep Argo regional pilot array to 1989–1995 data from full‐depth zonal and meridional hydrographic sections occupied across the basin before and during the World Ocean Circulation Experiment (WOCE). Additionally, float temperatures are about 0.046°C warmer than those from a long‐term climatology in those same bottom waters. Lower North Atlantic Deep Water in the basin shows no detectable warming, but Upper North Atlantic Deep Water exhibits evidence of warming in both analyses. The bottom‐intensified warming results in a reduction in vertical density stratification between the bottom and deep waters of about 1% per decade. This change is in contrast with the effects of surface‐intensified warming, which tends to increase vertical density stratification.
Climate Change Drives Increases in Extreme Events for Lake Ice in the Northern Hemisphere
Authors: Filazzola Alessandro , Blagrave Kevin , Imrit Mohammad Arshad , Sharma Sapna
Published: August 2020

Extreme climate events can have significant consequences on ecosystems and by extension human populations. Over 50 million of the world's lakes typically freeze each winter, and the absence of winter ice cover, in lakes where ice has historically been present, can be characterized as an extreme event. We quantified the effects of extreme climate events on lake ice cover using 78‐year ice records from 122 lakes to show that (1) extreme ice‐free years are becoming more frequent and severe, (2) winter air temperature is a significant predictor of ice cover that was driven by large‐scale climate oscillations, (3) extremes in temperature are closely related to extremes in ice cover, and (4) ice‐free years are forecasted to result in significant loss of ice‐cover in the future. Without drastic reductions in carbon emissions, we can expect the widespread loss of lake ice cover could have significant socioeconomic and biological implications.
Evaluation of Daily Precipitation Extremes in Reanalysis and Gridded Observation‐Based Data Sets Over Germany
Authors: Hu Guannan , Franzke Christian L. E.
Published: August 2020

Accurate and reliable gridded data sets are important for analyzing extreme weather and climate events. Specifically, these data sets should produce extreme value statistics that are close to reality. Here we use various statistical methods to evaluate the quality of four gridded data products in representing daily precipitation extremes. The data products are the COSMO‐REA6 regional reanalysis, the ERA5 global reanalysis, and the E‐OBS and HYRAS gridded observation‐based data sets. The statistical methods we use offer a thorough insight into the quality of the different data sets by providing temporal and spatial extreme value statistics of daily precipitation. Our results show that all data sets except HYRAS underestimate the magnitude of daily precipitation extremes when compared with weather station data. Moreover, the reanalysis data sets give generally worse extreme value statistics of daily precipitation than the gridded observation‐based data sets. In particular, the reanalysis data sets often fail in reproducing the accurate timing of observed daily precipitation extremes.
Effects of Polarization Reversal on the Pitch Angle Scattering of Radiation Belt Electrons and Ring Current Protons by EMIC Waves
Authors: Cao Xing , Ni Binbin , Summers Danny , Shprits Yuri Y. , Lou Yuequn
Published: August 2020

In this study, we investigate the effects of polarization reversal of electromagnetic ion cyclotron (EMIC) waves at the crossover frequencies on computations of bounce‐averaged pitch angle diffusion coefficients of radiation belt electrons and ring current protons. We find that inclusion of polarization reversal can cause significant changes of H+ band‐induced particle diffusion coefficients, while scattering by the He+ band is almost unaffected. Our results show that the pure L‐mode approach, which has been widely implemented in previous studies, tends to underestimate the diffusion coefficients of ultrarelativistic (>4 MeV) electrons and overestimate those of 10–50 and >100 keV protons caused by H+ band EMIC waves. Especially for >100 keV protons, the differences in diffusion coefficients can be larger by an order of magnitude. We confirm that the polarization reversal can contribute importantly to the scattering loss of radiation belt electrons and ring current protons by H+ band EMIC waves.
Shelfbreak Jet Structure and Variability off New Jersey Using Ship of Opportunity Data From the CMV Oleander
Authors: Forsyth Jacob , Andres Magdalena , Gawarkiewicz Glen
Published: August 2020

Repeat measurements of velocity and temperature profiles from the Container Motor Vessel (CMV) Oleander provide an unprecedented look into the variability on the New Jersey Shelf and upper continental slope. Here 1362 acoustic Doppler current profiler (ADCP) velocity sections collected between 1994 and 2018 are analyzed in both Eulerian and stream coordinate reference frames to characterize the mean structure of the Shelfbreak Jet, as well as its seasonal to decadal variability. The Eulerian mean Shelfbreak Jet has a maximum jet velocity of 0.12 m s−1. The maximum jet velocity peaks in April and May and reaches its minimum in July and August. In a stream coordinate framework, the jet is only identified in 61% of transects, and the mean stream coordinate Shelfbreak Jet has a maximum jet velocity of 0.32 m s−1. Evidence is found that Warm Core Rings, originating from the Gulf Stream arriving in the Slope Sea adjacent to the New Jersey Shelf, shift the Shelfbreak Jet onshore of its mean position or entirely shutdown the Shelfbreak Jet's flow. At interannual timescales, variability in the Shelfbreak Jet velocity is correlated with the temperature on the New Jersey Shelf 2 months later. When considered in a stream coordinate framework, Shelfbreak Jet have decreased over the time period considered in the study.
n‐Alkanes and PAHs in the Southeastern Tibetan Plateau: Characteristics and Correlations With Brown Carbon Light Absorption
Authors: Zhu Chong‐Shu , Li Li‐Juan , Huang Hong , Dai Wen‐Ting , Lei Ya‐Li , Qu Yao , Huang Ru‐Jin , Wang Qi‐Yuan , Shen Zhen‐Xing , Cao Jun‐Ji
Published: August 2020

The samples of atmospheric total suspended particle (TSP) were obtained at the remote Tibetan site (named Lulang) from November 2015 to November 2016. The seasonal characteristics of n‐alkanes, polycyclic aromatic hydrocarbons (PAHs) variations, and their correlations to brown carbon (BrC) light absorption in TSP were investigated. Elevated TSP n‐alkanes and PAHs levels were observed in winter (2.8 and 10 times higher than in monsoon, respectively), largely due to the seasonal contributions of wintertime home heating and long‐range transport. The total‐PAHs was found to correlate strongly with the methanol‐soluble BrC (MeS‐BrC) light absorption coefficient (babs) (R = 0.80) compared to water‐soluble BrC (WS‐BrC) (R = 0.70) at 365 nm. The BrC solar absorptions percentages to those of element carbon (EC) in the range of ultraviolet (300–400 nm) were high in both winter and premonsoon seasons, which can affect the vulnerable environmental radiative balance and atmospheric photochemistry.
Enhanced Wet Deposition of Water‐Soluble Organic Nitrogen During the Harvest Season: Influence of Biomass Burning and In‐Cloud Scavenging
Authors: Yu Xu , Li Dejun , Li Dan , Zhang Guohua , Zhou Huaishan , Li Sheng , Song Wei , Zhang Yanli , Bi Xinhui , Yu Jianzhen , Wang Xinming
Published: August 2020

Globally water‐soluble organic nitrogen (WSON) accounts for about one third of water‐soluble total nitrogen in atmospheric deposition, yet the key factors influencing WSON deposition remain uncertain. In the present study, precipitation and aerosol samples were collected during 2016–2018 at a forest site in the Pearl River Delta, south China. Rainwater WSON concentrations were found to elevate significantly during fall, and wet deposition of WSON during fall could account for about 50% of its annual total wet deposition. The wet deposition and rainwater concentrations of K+ and levoglucosan, which are tracers for biomass burning emissions, also increased substantially during fall. The average WSON/water‐soluble total nitrogen ratio in precipitations (0.48) was over two times higher than that in aerosols (0.20) during fall, while during other seasons, the ratios in precipitations (0.17) and in aerosols (0.19) were comparable. Moreover, concentrations of WSON in rainwater, unlike that of inorganic N, did not decrease significantly with the increase of precipitation amount during fall. These results suggested that enhanced biomass burning during fall (harvest season) might be an important source of in‐cloud WSON, and in‐cloud scavenging, instead of below‐cloud washout, likely contributed remarkably to the wet deposition of WSON.
How Can We Improve the Driving of the Quasi‐Biennial Oscillation in Climate Models?
Authors: Hertzog Albert
Published: August 2020

The Quasi‐Biennial Oscillation (QBO) of zonal‐mean zonal winds in the tropical stratosphere is a conspicuous feature of the Earth climate. Its influence virtually extends to the whole atmosphere. The QBO is driven by the dissipation of waves generated by deep convection in the tropics. Yet a significant fraction of these waves have spatial scales that are not explicitly resolved in current climate models, so that the evolution of the QBO in a changing climate still remains unclear. A study by Vincent and Alexander (2020, https://doi.org/10.1029/2020JD032779) shows that recent long‐duration balloon observations, combined with information on the vertical structure of the tropical atmosphere, could contribute to provide significantly improved constraints on wave parameterization in models.
Dual effects of thyroid hormone on neurons and neurogenesis in traumatic brain injury
Authors: Lin Chao , Li Nan , Chang Hanxiao , shen Yuqi , Li Zheng , wei Wu , Chen Hua , Lu Hua , Ji Jing , Liu Ning
Published: August 2020

Thyroid hormone (TH) plays a crucial role in neurodevelopment, but its function and specific mechanisms remain unclear after traumatic brain injury (TBI). Here we found that treatment with triiodothyronine (T3) ameliorated the progression of neurological deficits in mice subjected to TBI. The data showed that T3 reduced neural death and promoted the elimination of damaged mitochondria via mitophagy. However, T3 did not prevent TBI-induced cell death in phosphatase and tensin homolog (PTEN)-induced putative kinase 1 (Pink1) knockout mice suggesting the involvement of mitophagy. Moreover, we also found that T3 promoted neurogenesis via crosstalk between mature neurons and neural stem cells (NSCs) after TBI. In neuron cultures undergoing oxygen and glucose deprivation (OGD), conditioned neuron culture medium collected after T3 treatment enhanced the in vitro differentiation of NSCs into mature neurons, a process in which mitophagy was required. Taken together, these data suggested that T3 treatment could provide a therapeutic approach for TBI by preventing neuronal death via mitophagy and promoting neurogenesis via neuron–NSC crosstalk.
Accuracy of intraocular lens formulas using total keratometry in eyes with previous myopic laser refractive surgery
Authors: Yeo Tun Kuan , Heng Wee Jin , Pek Don , Wong John , Fam Han Bor
Published: August 2020

Objectives

This comparative study aimed to determine if total keratometry (TK) from IOLMaster 700 could be applied to conventional formulas to perform IOL power calculation in eyes with previous myopic laser refractive surgery, and to evaluate their accuracy with known post-laser refractive surgery formulas.

Methods

Sixty-four eyes of 49 patients with previous myopic laser refractive surgery were evaluated 1 month after cataract surgery. A comparison of the prediction error was made between no clinical history post-laser refractive surgery formulas (Barrett True-K, Haigis-L, Shammas-PL) and conventional formulas (EVO, Haigis, Hoffer Q, Holladay I, and SRK/T) using TK values obtained with the optical biometer IOLMaster 700 (Carl Zeiss Meditec), as well as Barrett True-K with TK.

Results

The mean prediction error was statistically different from zero for Barrett True-K, Barrett True-K with TK, Haigis-L, Shammas-PL, and Holladay I with TK. The mean absolute error (MAE) was 0.424, 0.671, 0.638, 0.439, 0.408, 0.424, 0.479, 0.647, and 0.524, and median absolute error (MedAE) was 0.388, 0.586, 0.605, 0.298, 0.294, 0.324, 0.333, 0.438, and 0.377 for Barrett True-K, Haigis-L, Shammas-PL, Barrett True-K TK, EVO with TK, Haigis with TK, Hoffer Q with TK, Holladay I with TK, and SRK/T with TK, respectively. EVO TK followed by Barrett True-K TK and Haigis TK achieved the highest percentages of patients with absolute prediction error within 0.50 and 1.00 D (68.75%, 92.19%, and 64.06%, 92.19%, respectively)

Conclusions

Formulas combined with TK achieve similar or better results compared to existing no-history post-myopic laser refractive surgery formulas.