bluuebunny/crossref_metadata_2025_split huggingface dataset:
Platinum‐Gold Alloy Catalyzes the Aerobic Oxidation of Formic Acid for Hydrogen Peroxide Synthesis
Authors: Chen Jinxing , Ma Qian , Yu Zhixuan , Li Minghua , Dong Shaojun 
Published: October 2022

AbstractOn‐site hydrogen peroxide production through electrocatalytic and photocatalytic oxygen reduction reactions has recently attracted broad research interest. However, practical applications have thus far been plagued by the low activity and the requirement of complex equipment. Here, inspired by the process of biological hydrogen peroxide synthesis catalyzed by enzymes, we report a Pt‐Au alloy to mimic the catalytic function of natural formate oxidase for hydrogen peroxide synthesis through aerobic oxidation of formic acid. The mass activity of the Pt‐Au alloy is three times higher than that of formate oxidase. Density functional theory calculations revealed that the efficient dehydrogenation of formic acid and the high selectivity of the subsequent reduction of oxygen to hydrogen peroxide account for the high hydrogen peroxide productivity. In addition, the formic acid aqueous solution provides an acidic environment, which is conducive to the utilization of the in situ generated hydrogen peroxide for oxidation reactions, including C−H bond oxidation and sterilization.
Upper‐limb acute superficial lymphatic thrombosis: A case report
Authors: Hamdan Rémy , Briche Nicolas , Gasmi Vanessa , Abejiou Ilham , Lafon Ingrid , Djerroudi Lounes 
Published: October 2022

AbstractUpper‐limb acute superficial lymphatic is a rare phenomenon that has received little attention in the medical literature to date, yet it mimics superficial venous thrombosis and may also complicate a skin punch biopsy.
Anesthetic management of a patient with trisomy 18 undergoing esophageal banding and preceding gastrostomy—A case report
Authors: Kano Misaki , Sugiyama Daisuke , Ueda Kenichi , Kobayashi Osamu 
Published: October 2022

AbstractA patient diagnosed with trisomy 18 is at great risk of perioperative morbidity and mortality, especially with complex congenital cardiac anomalies. Here, we report successful anesthetic management of palliative esophageal‐banding and gastrostomy for trachea‐esophageal fistula in a patient who had a complex congenital heart disease with trisomy 18.
Temporal changes and gender differences related to orofacial symptoms in two cohorts of 75‐year‐old Swedish subjects examined in 2007 and 2017: A repeated cross‐sectional study
Authors: Johansson Anders , Omar Ridwaan , Sannevik Josefin , Mastrovito Berit , Carlsson Gunnar E. , Johansson Ann‐Katrin 
Published: October 2022

AbstractObjectivesTo compare two cohorts of 75‐year‐old persons, born 10 years apart, in regard to reported symptoms related to temporomandibular disorders (TMD) and orofacial complaints with special reference to gender differences.Material and MethodsIn 2007, a questionnaire comprising questions on social factors, general and oral health, and a series of attitude‐related questions was mailed to all individuals born in 1932 living in two Swedish counties (N = 5195), and in 2017 to all born in 1942 (N = 7204). The response rate for the cohort examined in 2007 was 71.9% (n = 3735) and 70.7% (n = 5091) for the cohort examined in 2017. Bivariate statistical analyses were applied.ResultsReported bruxism and pain from the temporomandibular joint were significantly higher in the 1942 cohort compared to the 1932 cohort, while reports of oral lesions and daytime dry mouth were lower. Women reported problems significantly more frequently in most of the domains investigated in both 2007 and 2017, that is, TMD, burning mouth, sensitive teeth, oral lesions, taste changes, daytime/night‐time dry mouth, except bad breath.ConclusionsTMD‐related symptoms increased while complaints from oral lesions and daytime mouth dryness decreased between 2007 and 2017. Temporal changes were otherwise few, but the findings underline the gender inequalities that exist, to the disadvantage of women. This must be considered when planning for clinical care/dental education to appropriately address the needs of older people.
Characterization of the surface charge property and porosity of track‐etched polymer membranes
Authors: Zhuang Jiakun , Ma Long , Qiu Yinghua 
Published: October 2022

AbstractAs an important property of porous membranes, the surface charge property determines many ionic behaviors of nanopores, such as ionic conductance and selectivity. Based on the dependence of electric double layers on bulk concentrations, ionic conductance through nanopores at high and low concentrations is governed by the bulk conductance and surface charge density, respectively. Here, through the investigation of ionic conductance inside track‐etched single polyethylene terephthalate (PET) nanopores under various concentrations, the surface charge density of PET membranes is extracted as ∼−0.021 C/m2 at pH 10 over measurements with 40 PET nanopores. Simulations show that surface roughness can cause underestimation in surface charge density due to the inhibited electroosmotic flow. Then, the averaged pore size and porosity of track‐etched multipore PET membranes are characterized by the developed ionic conductance method. Through coupled theoretical predictions in ionic conductance under high and low concentrations, the averaged pore size and porosity of porous membranes can be obtained simultaneously. Our method provides a simple and precise way to characterize the pore size and porosity of multipore membranes, especially for those with sub‐100 nm pores and low porosities.
Three‐dimensional MoSx/polyaniline@graphene heteroaerogels as electrode materials for high‐performance symmetric supercapacitors
Authors: Lonkar Sunil P. , Gupta Vinay , Alhassan Saeed M. , Schiffer Andreas 
Published: October 2022

AbstractNanohybrids of transition metal dichalcogenide (TMDs) with conducting materials such as carbonaceous graphene and conducting polymers like polyaniline (PANI) have attracted significant interest as electrode material in energy storage applications, particularly supercapacitors. Herein, we put forward a simplistic and scalable approach to integrating molybdenum sulfide (MoSx) with conducting graphene and polyaniline supports into a three‐dimensional (3D) assembly. Acidic graphene oxide was simultaneously used as a precursor of graphene and catalyst to in situ synthesize the amorphous molybdenum (MoSx) nanoparticles and as an acidic dopant for polyaniline base to form 3D porous MoSx‐PANI@RGO architecture under hydrothermal methods. Due to its highly porous conductive network and plentiful ion diffusion redox sites, the as‐obtained 3D hybrid material was effectively used to fabricate electrodes for supercapacitor application. The 3D MoSx‐PANI@RGO nanohybrid electrodes showed excellent specific capacitance of 1365 F g−1 @ 1 A g−1, significantly greater than the PANI/RGO (770 F g−1) and MoSx/RGO (568 F g−1) electrodes, respectively. Remarkably, the corresponding symmetric supercapacitor device can deliver an excellent energy density of 29.5 Wh kg−1 and a high‐power density of 8700 W kg−1 with excellent cycling permanence verified by 88% capacitance preservation after 5000 cycles. Overall, the implemented strategy of using direct acidic GO offers technological scalability in fabricating a wide range of low‐cost 3D functional electrodes for various energy‐storage applications.
The Acute Toxicity of Salinity in Onshore Unconventional Gas Waters to Freshwater Invertebrates in Receiving Environments: A Systematic Review
Authors: Willems Daniel J. , Kumar Anupama , Nugegoda Dayanthi 
Published: October 2022

Abstract
Industries such as unconventional natural gas have seen increased global expansion to meet the increasing energy needs of our increasing global population. Unconventional gas uses hydraulic fracturing that produces significant volumes of produced waters, which can be highly saline and pose a toxic threat to freshwater invertebrates if exposure via discharges, spills, leaks, or runoff were to occur. The primary aim of the present review was to determine the sodium (Na+) and chloride (Cl−) content of these waters as an approximate measure of salinity and how these values compare to the NaCl or synthetic marine salt acute toxicity values of freshwater invertebrate taxa. Shale gas produced waters are much more saline with 78 900 ± 10 200 NaCl mg/L and total dissolved solids (TDS) of 83 200 ± 12 200 mg/L compared to coal bed methane (CBM) produced waters with 4300 ± 1100 NaCl mg/L and TDS of 5900 ± 1300 mg/L and pose a far greater toxicity risk from NaCl to freshwater invertebrates. In addition, the toxicity of other major ions (Ca2+, K+, Mg2+, CO32−, HCO3−, and SO42−) and their influence on the toxicity of Na+ and Cl− were evaluated. Exposure of untreated and undiluted shale gas produced waters to freshwater invertebrates is likely to result in significant or complete mortality. Shale gas produced waters have higher concentrations of various metals compared with CBM produced waters and are more acidic. We recommend future research to increase the reporting and consistency of water quality parameters, metals, and particularly organics of produced waters to provide a better baseline and help in further investigations. Environ Toxicol Chem 2022;41:2928–2949. © 2022 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
Abstract
Comparing the acute toxicity (48–96-h) of sodium chloride (NaCl) and/or synthetic marine salt laboratory exposures of freshwater invertebrates to the salinity in unconventional gas produced waters from coal bed methane and shale gas extraction, and how other major ions (Ca2+, K+, Mg2+, CO32–, HCO3–, SO42–) can influence the toxicity of Na+ and Cl– ions and other major ions found in these waters.
Probabilistische Prognose von Karstwasserzutritten beim Bau von Untertagebauwerken
Authors: Filipponi Marco , Renard Philippe , Dall'Alba Valentin , Neven Alexis 
Published: October 2022

AbstractVarious methods have been developed in recent decades to predict hazards associated with karst voids in underground construction. Common to all these methods is that the predicted range of water inflow is often insufficient for the purpose of implementing the planned construction works. This is usually due to an incomplete knowledge of the karst conduit system within a project area, making it difficult to predict the position and characteristics of karst voids. The method presented in this paper permits a robust prediction of karst water inflow. It is based on a combination of stochastically generated, pseudo‐genetic karst conduit systems and hydraulic modelling of the hydrogeological conditions using a Monte Carlo approach. This approach facilitates a plausible estimation of the expected range of karst‐induced water inflows and also enables the probability of encountering a karst voids. to be determined. The predictions allow for differentiated treatment of the hazards associated with karst water during the construction and operation phase of underground structures. In concrete terms, this relates to the planning and implementation of exploratory measures and ground‐improvement measures, the design of the dewatering system and its monitoring during the construction and operation phase.
Towards optimized TBM cutter changing policies with reinforcement learning
Authors: Erharter Georg H. , Hansen Tom F. 
Published: October 2022

AbstractIn tunnel boring machine (TBM) excavation, cutter maintenance is necessary, but the time for it has to be minimized for efficiency. Although there is extensive literature on TBM cutter wear and predictive maintenance for different industrial applications, there is no optimized policy for cutter changes in TBM tunnelling today. This study aims to investigate the application of reinforcement learning (RL) – a branch of machine learning – for finding optimized policies for cutter changing that maximize the number of working cutters and minimize the maintenance effort. A simulation of a TBM excavation process is developed that focuses on the cutter wear and an agent that controls when cutters must be changed. The simulation uses generated parameters that indicate the cutter life, but the results could be transferred to real sensor data in future excavations once that level of development is reached. The article presents the first results from this RL scenario which can give valuable insights into TBM excavation logistics and presents a challenging multiaction‐selection RL problem.
Debris flows at Illgraben, Switzerland – From seismic wiggles to machine learning
Authors: Walter Fabian , Chmiel Małgorzata , Hovius Niels 
Published: October 2022

AbstractWhere debris flows can impinge on the built environment, early detection of flow events is necessary in order to issue warnings and initiate countermeasures like road or train track closure. In this contribution, previously published work at Illgraben, Switzerland, is compiled, which shows how seismic measurements can be used for debris flow monitoring and warning. The advantage of the seismic approach is that debris flow signals can be detected at large distances eliminating the need for installations within or close to torrents, which are usually difficult to access. It is shown that seismic data contain important information about debris flows, including initiation, propagation, and particle sizes. However, machine learning algorithms, which are tuned with example data rather than physical principles, so far offer the best performance for debris flow detection with continuous real‐time data. Such algorithms pave the way for a new class of warning systems, based on data science techniques rather than in‐torrent instrumentation.
Zur Gründung des 140 m hohen Staudamms Kühtai im Längental
Authors: Perzlmaier Sebastian , Holzmann Michael , Bauer Steffen 
Published: October 2022

AbstractKühtai Dam is an embankment dam with a central earth core that is founded on rock. The rock surface is treated by shaping, adding dental concrete and, finally, grouting. A large excavation was required to expose the rock in the earth core foundation. Before starting the excavation, the Längentalbach stream had to be diverted. The upstream and downstream shells of Kühtai Dam are founded on the remaining overburden. Under the earth core, an inspection tunnel is located along the dam axis. The tunnel serves to accommodate measuring equipment and decouple fill and grout curtain works in terms of sequence of construction. In deviation from the tender project, the inspection gallery on each side of the valley is constructed as a combination of two conventional adits and two raise‐boring shafts. To connect the adits and shafts, reinforced concrete structures are situated at half dam height, on which the earth core is founded directly similar to an inspection gallery in trench type. On the one hand, this adjustment is the result of a geological fault detected during the preliminary excavation works in 2020. The fault crosses the core footprint in the orographic left flank of the valley. On the other hand, the subdivision of the two long conventional shafts will eliminate the construction time constraint resulting from the requirement to not start grouting in the dam foundation until the conventional tunnelling below the dam has been completed.
Automatisierte Ausführung und Steuerung von Kompensationsinjektionen
Authors: Maroschek Philipp , Weber Florian , Rathenböck Florian , Özkoral Florian 
Published: October 2022

AbstractConstruction projects such as the construction of a new metro system can require extensive compensation grouting measures for existing buildings. A comprehensive monitoring system and corresponding data management system (DMA) are crucial monitoring elements throughout the construction process. Elevation grouting prevents any impact the construction measures may have on buildings located in the vicinity. For this purpose, tubes‐à‐manchettes are installed in a tight grid underneath the buildings. Double packers are used to achieve stabilisation at an early stage, i.e. contact grouting. Therefore, if tunnel driving causes the subsoil to settle, elevation grouting can be introduced as a countermeasure. By using the data provided by water level gauges, the system automatically proposes a measure, which is transmitted to the grouting platform following the check and approval by the responsible engineer. The machine operator selects the sleeve and starts the fully automated grouting process. Each grouting process is recorded, transmitted to the DMS, analyzed in real time, checked and visualized. All parties involved in the project are able to view the data via the web platform at any time and are provided with comprehensive information.
Kraftwerk Witznau, Verpressversuche zur Ertüchtigung des Druckstollens
Authors: Schwalt Markus , Stolz Daniel 
Published: October 2022

AbstractIn response to spalling of concrete parts, the headrace tunnel was to be strengthened section by section and made fit for the years to come. Since little information was available on the condition of the tunnel and the cause of the spalling, possible damage patterns and causes were analyzed and grouting in combination with concrete rehabilitation were defined as strengthening measures. During a break in operation of approx. 2 months in June 2020, cement injections were tested in grouting trials in different variants to determine their suitability and optimize the parameters and the work to be carried out. The tests and the investigations carried out revealed interesting findings about the condition of the tunnel. The grouting was carried out at low pressure, at different distances and drilling depths, testing important parameters for the subsequent execution and enabling optimization. The porosity of the lining was significantly reduced by grouting, thus improving the quality of the shell. A before‐and‐after measurement with georadar investigation demonstrated the improvement of the lining due to the grouting.A remarkable finding is the combination of the relatively poor quality of the lining concrete, which is due to the construction during World War II, with the practically uncracked and relatively tight lining. It is a testimony to a high level of construction skill that it was possible to create such durable structures with the means available at the time.
Plasma levels of interleukin‐8 and response to paroxetine in patients with major depressive disorder
Authors: Guan Xuan , Dong Zai‐Quan , Hao Yan‐Ni , Shen Xiao‐Ling , Xie Qing‐Lian , Chen Jian‐Min 
Published: October 2022

AbstractObjectivesImmune dysregulation plays a key role in major depressive disorder (MDD). However, little is known about the complicated involvement of various interleukins in MDD. This study was performed to investigate the correlation between plasma interleukin‐8 (IL‐8) levels and treatment outcome of paroxetine (a selective serotonin reuptake inhibitor) in patients with MDD.MethodsA total of 115 hospitalized patients (36 males and 79 females), aged from 18 to 72 years, were enrolled. Plasma levels of IL‐8 were measured before treatment initiation (baseline) and at 8 weeks after oral paroxetine treatment. Efficacy of paroxetine was evaluated by use of the Hamilton Depression Rating Scale (HAMD‐17). Baseline IL‐8 levels were compared between responders and non‐responders to paroxetine treatment.ResultsPlasma IL‐8 levels decreased significantly after an 8‐week antidepressant treatment in responders, in association with a dramatic decrease in HAMD‐17 scores. In non‐responders, plasma IL‐8 levels did not change significantly at 8 weeks after antidepressant treatment. Baseline plasma IL‐8 levels were found to be significantly lower in responders than in non‐responders, showing a correlation between IL‐8 and antidepressant response to paroxetine.ConclusionsThese results indicate that plasma IL‐8 levels were related to treatment outcome of paroxetine, and therefore suggest that IL‐8 could be a promising predicator of treatment response in individual patients with MDD.
Open science considerations for descriptive research in developmental science
Authors: Kosie Jessica E. , Lew‐Williams Casey 
Published: October 2022

AbstractDescriptive developmental research seeks to document, describe and analyze the conditions under which infants and children live and learn. Here, we articulate how open‐science practices can be incorporated into descriptive research to increase its transparency, reliability and replicability. To date, most open‐science practices have been oriented toward experimental rather than descriptive studies, and it can be unclear how to translate open‐science practices (e.g., preregistration) for research that is more descriptive in nature. We discuss a number of unique considerations for descriptive developmental research, taking inspiration from existing open‐science practices and providing examples from recent and ongoing studies. By embracing a scientific culture where descriptive research and open science coexist productively, developmental science will be better positioned to generate comprehensive theories of development and understand variability in development across communities and cultures.
Exploring the temporal aspect of B‐IT social alignment on operational level: A reflexive thematic analysis
Authors: Levkov Nikola , Jacks Tim , Boateng Richard 
Published: October 2022

AbstractThe success of IS change implementation on the operational level is surrounded by challenges that mainly concern cross‐departmental management and people issues involved in the implementation process. Different organizational departments are entrained to different temporal structures that shape the temporal context of business and IT (B‐IT) communication. Through reflexive thematic analysis, and semi‐structured interviews with 32 business and IT professionals from 7 banking and 2 telecom corporations in North Macedonia, we identify the key time dimensions and temporal events affecting B‐IT communication. We propose a new construct, temporal B‐IT social alignment, and we define it as B‐IT‐SU (shared understanding) of cross‐departmental temporal structuring that enables and constrains the B‐IT communication in the process of translating business demands into IT requirements on the operational level. Findings show that establishing strong structural linkage through interface actors mitigates only some of the challenges in IS implementation resulting from different temporal aspects. Furthermore, we found that the identified time dimensions as well as entrainment to different temporal structures and events have a significant impact on achieving B‐IT‐SU and B‐IT‐SA (shared agreement). We advance the view of B‐IT social alignment, and we synthesize lessons that can be learned from this study that have practical implications.
Synergistic effect on the tribological characteristics for coal‐to‐liquids soot modified by nitric acid and oleic acid
Authors: Wang Jian , Liu Tianxia , Qin Jian 
Published: October 2022

AbstractA self‐made soot capture device was applied to burn coal‐to‐liquids and collect its soot (CS), and then modified the CS with nitric acid or nitric acid and oleic acid to obtain nitric acid modified CS (CSN) or nitric acid and oleic acid modified CS (CSNO). The influence of CS, CSN and CSNO on the lubrication performance of 10# white oil (WO) was investigated on a four‐ball tester. The structural difference, surface topography, element composition and tribological mechanism of the three types soot were analysed by Fourier transform infrared spectrometer, X‐ray photoelectron spectroscopy, scanning electron microscope, high resolution transmission electron microscope, and so on. From the obtained results, after further modification with oleic acid, the solubility of oil is significantly improved. Compared with 10# WO, the average friction coefficient and average wear scar diameter of CS, CSN and CSNO are all reduced. Among them, CSNO has the best anti‐friction and anti‐wear effect. CSNO is expected to be used as carbon lubricating material from coal‐to‐liquids soot.