bluuebunny/crossref_metadata_2025_split huggingface dataset:
Is the cost‐effectiveness of an early‐childhood sleep intervention to prevent obesity affected by socioeconomic position?
Authors: Killedar Anagha , Lung Thomas , Taylor Rachael W. , Taylor Barry J. , Hayes Alison 
Published: December 2022

AbstractObjectiveThis study aimed to determine whether the cost‐effectiveness of an infant sleep intervention from the Prevention of Overweight in Infancy (POI) trial was influenced by socioeconomic position (SEP).MethodsAn SEP‐specific economic evaluation of the sleep intervention was conducted. SEP‐specific intervention costs and effects at age 5 years, derived from the trial data, were applied to a representative cohort of 4,898 4‐ to 5‐year‐old Australian children. Quality‐adjusted life years and health care costs were simulated until age 17 years using a purpose‐built SEP‐specific model. Incremental cost‐effectiveness ratios and acceptability curves were derived for each SEP group.ResultsThe incremental cost‐effectiveness ratios, in Australian dollars per quality‐adjusted life year gained, were smaller in the low‐ ($23,010) and mid‐SEP ($18,206) groups compared with the high‐SEP group ($31,981). The probability that the intervention was cost‐effective was very high in the low‐ and mid‐SEP groups (92%‐100%) and moderately high in the high‐SEP group (79%).ConclusionsAn infant sleep intervention is more cost‐effective in low‐ and mid‐SEP groups compared with high‐SEP groups. Targeting this intervention to low‐SEP groups would not require trade‐offs between efficiency and equity.
An international assessment of the barriers influencing the effectiveness of island ecosystem management
Authors: Burt April , Nuno Ana , Turnbull Lindsay , Fleischer‐Dogley Frauke , Bunbury Nancy 
Published: December 2022

Abstract

Island ecosystems are disproportionally impacted by biodiversity loss and as such their effective management is critical to global conservation efforts.

Practitioners world‐wide work to manage island sites and species to conserve them, but various day‐to‐day barriers compromise these efforts, reducing management effectiveness and preventing local and potentially even national biodiversity targets from being met.

Identifying the most important barriers that currently impede effective island conservation could streamline investment to focus on cost‐efficient interventions that better reflect realities on the ground and the need to address barriers under substantial time and budget constraints.

A survey of 360 practitioners working in island ecosystem management across 77 countries was conducted.

The three most common barriers perceived by practitioners to prevent them from achieving more effective management are: low staff capacity; difficulties turning data into useful information for management (including lack of capacity and time to analyse data); and lack of a research and management strategy.

Practitioners' perceptions of national‐level management effectiveness were mostly associated with their perception of governance issues, the presence/absence of research and management strategies and their experience of collaboration outcomes.

Practitioners' experience of staffing and monitoring programme issues was important in shaping their perception of management effectiveness within the organisation(s) they worked with.

Despite the indisputable need for transformative change to address the underlying causes of many of these barriers, more immediate and direct investment in strengthening the people and systems that are at the frontline of preventing biodiversity loss on islands is needed to bridge these barriers and achieve more effective management of island ecosystems.

Read the free Plain Language Summary for this article on the Journal blog.
An adaptive time‐varying barrier Lyapunov function‐based attitude tracking control for spacecrafts without angular velocity measurement
Authors: Hu Hui , Wang Bo , Liu Lei , Cheng Zhongtao 
Published: December 2022

AbstractIn this paper, based on a novel adaptive time‐varying barrier Lyapunov function (A‐TBLF), we propose an output feedback tracking controller for spacecrafts with adaptive time‐varying state constraints. The adaptive time‐varying barrier is adapted with the real‐time constrained state but not constant or a predefined function. It is guaranteed that the constrained state converges into the predefined domain whenever it starts. Moreover, a barrier update restart scheme is designed in the A‐TBLF method to prevent potential barrier violations. Furthermore, we consider the input explosion of the BLF‐based controller when the state is close to the barrier. A nonlinear margin function is introduced to avoid continuous input saturation, resulting in a smooth and cost‐effective control input. On the other hand, as the accurate angular velocity measurement is assumed to be unavailable, it is proposed an adaptive observer chain with finite‐time estimation to the angular velocity and the lumped disturbance. Therefore, only the attitude angle is used to design the controller and the attitude tracking error can be further eliminated. Simulation results verify the effectiveness of the proposed method, and comparative simulations show the superiorities than other control methods with time‐varying state constraints.
Decarboxylative Cross‐coupling Reaction between Aryl Carboxylic Acids using BF@Propyl/Tris/Pd as a Novel Catalyst
Authors: Noori Samira , Ghorbani‐Vaghei Ramin 
Published: December 2022

AbstractThe present study provides a practical and safe cross‐coupling strategy for the synthesis of biaryls via decarboxylation of aryl carboxylic acids. In this method, BF@Propyl/Tris/Pd was used as a new catalyst to synthesize biaryls. The structural and morphological characteristics of the catalyst were investigated by FT‐IR, EDX, XRD, TGA, and SEM analyses. This catalyst system has some advantages, such as good stability, excellent workup, and reusability. We used it as a recyclable heterogeneous catalyst by easily separating it from the medium of reaction.
A Biologically Compatible Colorimetric Sensor for the Selective Recognition of Cu2+ Ions in Biological Matrices
Authors: Fazal Mahmood , Ali Imdad , Ahmed Farid , Khalid Shumaila , Farghaly Thoraya A. , Althagafi Ismail I. , Khan Irfan , Ali Mumtaz , Ateeq Muhammad , Shah Muhammad Raza 
Published: December 2022

AbstractHeavy metal ions pollution is posing a major danger to human health across the planet. We present a phenylhydrazone‐based colorimetric sensor for detecting Cu2+ ions in tap water and human blood plasma. The phenylhydrazone‐based sensor (Sensor 1) is extremely selective for recognizing Cu2+ ions over other similar metal ions by producing a colorimetric response. Upon interaction with Cu2+, the colorless sensor 1 changes to dark yellow within a minute producing a bathochromic shift in the absorption spectrum. The AFM, Zetasizer and FTIR spectroscopic techniques were used for Cu2+ detection and selectivity of sensor 1. The average size of sensor 1 is around 293.9 nm which changes to 2275 nm upon complexation with Cu2+. Sensor 1 was highly selective towards Cu2+ as no interference was recorded by various metals ions. The detection limit was found to be 0.1 μM with R2 equal to 0.9821. Furthermore, cytotoxic experiments showed that sensor 1 is nontoxic to various cell lines, which revealed that it could detect Cu2+ ions in the biological system. Moreover, sensor 1 gives satisfactory results for detecting Cu2+ ions in human blood plasma and real water samples.
Selectivity of Ethanol Conversion on Al/Zr/Ce Mixed Oxides: Dehydration and Dehydrogenation Pathways Based on Surface Acidity Properties
Authors: Chuklina Sofia , Zhukova Anna , Fionov Yuri , Kadyko Mikhail , Fionov Alexander , Zhukov Dmitry , Il'icheva Alla , Podzorova Ludmila , Mikhalenko Irina 
Published: December 2022

AbstractZirconia‐alumina mixed oxides (Zr+Ce)O2−Al2O3 with various mol. ratios (5, 10, 20, 50, and 75 % alumina) were prepared using the sol‐gel method. The catalysts were characterised via XRD, SEM, DTA/TG, BET, and FT‐IR spectroscopy. The acidities of the catalysts were measured through the absorption of anthraquinone and pyridine probe molecules using EPR and IR spectroscopy, respectively. Catalytic activity and selectivity were investigated for ethanol conversion to acetaldehyde, ethylene, and diethyl ether, which were used as model reactions to identify surface‐active sites. The relationship between the surface structure and the dehydration/dehydrogenation activity was evaluated. Diethyl ether formation is promoted by the presence of the ZrO2 tetragonal phase at a low ZrO2/Al2O3 ratio in the sample composition, at which the Lewis acid site has an aluminum‐oxygen environment. The reaction mechanism was also discussed. In the low‐temperature reaction region, dehydrogenation competes with dehydration; ethylene and acetaldehyde share a common reactive intermediate.
Asymmetric Supercapacitors using Manganese Oxide Nanorods and Activated Carbon
Authors: Joshi Ved Prakash , Pathak Prakash Kumar , Kumar Nitish , Salunkhe Rahul R. 
Published: December 2022

AbstractThe utilization of Ionic liquids (ILs) for synthesizing inorganic materials has shown considerable potential in the last decade. The unmatchable advantages, like low vapor pressure, good thermal stability, tunable solubility, and synthesis route flexibility, make them more promising than their aqueous counterparts. This work portrays the use of various ILs for synthesizing asymmetrically oriented α‐MnO2 nanorods. The formation of nanorods was more energetically favorable, and the addition of IL helped increase the material‘s surface area and conductivity. The enhanced surface and conductivity help in boosting the supercapacitive performance, as the material exhibits 352 F g−1 in 1 M Na2SO4 electrolyte. The synthesized material and activated carbon were used to assemble an asymmetric supercapacitor device. This device has shown an excellent energy density of 28.5 Wh kg−1 and a power density of 96.5 W kg−1 in 1 M Na2SO4 electrolyte.
A Series of Metal‐Organic Frameworks for Adsorption of Halogenated Volatile Organic Compounds
Authors: Nguyen Phuong T. K. , Tran Y B. N. 
Published: December 2022

AbstractGiven the urgent demand for removing toxic vapours from the atmosphere, the employment of porous materials for the adsorption of halogenated volatile organic compounds has been of intense interest. In this respect, a series of isostructural metal‐organic frameworks (MOFs), M‐MOF‐184 (M=Mg, Co, Ni, Zn), was solvothermal synthesized and examined on adsorption of 1,2‐dichloroethane. Due to the structural features of Lewis acidic sites derived from the infinite metal‐oxo unit and basic sites from 2‐oxidobenzoate anions, accessibly hexagonal channels with an aperture size of 24 Å, and high porosities (BET surface areas>3000 m2 g−1), three M‐MOF‐184 (M=Mg, Co, Ni) materials revealed the high saturated capacity of 1,2‐dichloroethane at room temperature (> 236 cm3 g−1). Notably, the adsorption capacities of three M‐MOF‐184 (M=Mg, Co, Ni) frameworks for 1,2‐dichloroethane outperformed that of the porous materials including activated carbon and representative MOFs. Among this series, Co‐MOF‐184 showed the largest adsorption saturated capacity of 1,2‐dichloroethane (346 cm3 g−1 at 298 K) and highly isosteric heat of adsorption (40 kJ mol−1). By mean of ATR‐FTIR analysis, we determined the surface interactions between 1,2‐dichloroethane and the Co‐MOF‐184 and explore the important effects of the acidity and basicity properties and large pore structure on 1,2‐dichloroethane adsorption performance.
A Biologically Active Chromone fromBomarea setacea(alstroemeriaceae): Leishmanicidal, Antioxidant and Multilevel Computational Studies
Authors: Cardona‐Galeano Wilson , Yepes Andres F. , Quintero‐Saumeth Jorge , Robledo Sara M. , Alzate Fernando , Rojano Benjamín 
Published: December 2022

AbstractA chromone was isolated from alcoholic extracts fromBomarea setaceaand identified as 2‐henicosyl‐5,7‐dihydroxy‐4H‐chromen‐4‐one. The leishmanicidal activity was evaluated against intracellular amastigotes ofL. panamensisand cytotoxicity on U‐937 cells, maintained in standard culture conditions. This compound showed leishmanicidal activity (EC50=14.8±1.9 μg/mL, 31.4 μM), low cytotoxicity (LC50=>200 μg/mL, >423.7 μM). Additionally, this compound showed high antioxidant activity through ORAC and DPPH methods. These experimental results motivated us to carry out computational explorations such as docking against several parasite protein targets, molecular dynamics to validate docking results and DFT calculations, used to explain the high antioxidant activity of chromone. Notably, the docking results showed theN‐myristoyltransferase (NMT) enzyme to be a potential target for chromone (docking score −9.1 kcal.mol−1). Molecular dynamics (MD) studies provide strong evidence of the conformational stability of the chromone‐LpNMT complex obtained from docking throughout 50 ns all‐atom MD simulation. Molecular mechanics Poisson‐Boltzmann surface area (MM‐PBSA) analyses of chromone‐LpNMT complex show that the interaction between the ligand and the target protein is stable. DFT calculations allow to explain the greater in vitro antioxidant properties, and drug‐likeness studies show suitable pharmacokinetics properties for chromone. Our findings suggest that chromone has great potential to continue in the search for new drugs to treat leishmaniasis.
Synthesis of Ultrafine Platinum Nanocatalysts by Ice‐photochemical Method and Their Application in Catalytic Degradation of 4‐nitrophenol
Authors: Xian Liang , Ma Jing , Li Wei , Yang Yanzhong , Gao Xu , Xi Bei , Tian Xiaoxia 
Published: December 2022

AbstractHere, uniformly dispersed ultrafine platinum nanocatalysts (Pt/C60) were synthesized on C60 by ice‐photochemical method using potassium chloroplatinate (K2[PtCl4]) as platinum source under the condition of low temperature, no stabilizer and reducing agent. X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FT‐IR), X‐ray photoelectron spectroscopy (XPS) and Transmission electron microscopy (TEM) were used to study the composition and morphology of Pt/C60 catalyst. It was confirmed that Pt Ultra‐small Particles (Pt UPs) was loaded on C60 surface with high dispersion. The average particle sizes of the three samples obtained under different reaction conditions were 1.41±0.1 nm, 1.54±0.4 nm and 1.73±0.3 nm, respectively. The results show that the light‐induced effect and the ice lattice domain limiting effect in the frozen state effectively control the formation and growth of platinum clusters in the process of Pt2+ reduction to Pt0. The rate constants of the three samples were 0.89 min−1, 0.31 min−1, 0.19 min−1, respectively, showing high catalytic activity in the study of the catalytic performance of Pt/C60 degradation of 4‐nitrophenol (4‐NP) by Ultraviolet‐visible spectroscopy (UV‐Vis). This method provides a meaningful attempt for the study of green chemical synthesis method of platinum metal catalysts.
First‐principles Study of SO2 and NO Gas Sensors Based on SnTe Monolayer
Authors: Wei Guang , Pang Jianhua , Zhang Jiwei , Chen Hui , Yan Jin , Wei Songrui 
Published: December 2022

AbstractThe structural and electronic properties of SnTe monolayer after the adsorption of gas molecules (CH4, CO2, NH3, CO, H2S, NO, SO2, NO2 and Cl2) were investigated by first‐principles calculations based on density functional theory (DFT). The results showed that SO2, NO, NO2 and Cl2 were chemisorbed on SnTe monolayer with strong adsorption energies. In addition, because of the high sensitivity of the adsorption of SO2 and NO gases on SnTe monolayer, the bandgap of the developed system changed significantly, with a reduction of 22.88 % and 71.65 %, respectively. The results indicate that SnTe monolayer has highly sensitive SO2 and NO gas detection capability, especially for NO. And it can act as a disposable gas sensor or metal‐free catalyst for the detection and catalysis of pollution gases, such as NO2 and Cl2.
Oxidations of 4H‐1,2,6‐Thiadiazines
Authors: Kalogirou Andreas S. , Kourtellaris Andreas , Koutentis Panayiotis A. 
Published: December 2022

AbstractThe oxidation of various non‐S‐oxidized 4H‐1,2,6‐thiadiazines with N2O4, meta‐chloroperbenzoic acid (m‐CPBA), Oxone, [bis(trifluoroacetoxy)iodo]benzene (PIFA) and phenyliodine (III) diacetate (PIDA) is reported. Six 3,5‐diamino‐4H‐1,2,6‐thiadiazin‐4‐ones were oxidized to the corresponding sulfones (67–95 % yields) most efficiently using PIFA (3 equiv.). A 3,5‐diphenylthio analogue, however, oxidized at the exocyclic sulfur to give the asymmetric mono sulfoxide using PIFA (3 equiv.) in 86 % yield. 4H‐1,2,6‐Thiadiazine 4‐ylidenemalononitriles, 4‐ylidinemalonates and 4‐phenylimines were oxidized stepwise, initially to sulfoxides using all the above reagents in 31–97 % yields and then to sulfones using N2O4, m‐CPBA or Oxone in 31–89 % yields. Oxidation of a 4‐thione derivative using Oxone (1.5 equiv.) gave the sulfine in 56 %. Unexpectedly, oxidation of 3,5‐diphenyl‐4‐(phenylimino)‐4H‐1,2,6‐thiadiazine 1‐oxide with excess m‐CPBA gave a fused oxaziridine in 98 % yield, while 3,5‐dimorpholino‐4H‐1,2,6‐thiadiazin‐4‐one 1,1‐dioxide in EtOH/MeCN gave a hemiacetal in 56 % yield. Single crystal structures of 3,5‐bis(phenylamino)‐4H‐1,2,6‐thiadiazin‐4‐one 1,1‐dioxide, 4‐ethoxy‐4‐hydroxy‐3,5‐dimorpholino‐4H‐1,2,6‐thiadiazine 1,1‐dioxide, 2‐(1‐oxido‐3,5‐diphenyl‐4H‐1,2,6‐thiadiazin‐4‐ylidene)malononitrile, 2‐[1,1‐dioxido‐3,5‐di(thien‐2‐yl)‐4H‐1,2,6‐thiadiazin‐4‐ylidene]malononitrile and (E)‐4,6‐diphenyl‐5‐(phenylimino)‐7‐oxa‐2‐thia‐1,3‐diazabicyclo[4.1.0]‐hept‐3‐ene 2,2‐dioxide are reported.
Nexuses Between the Chemical Design and Performance of Small Molecule Dopant‐Free Hole Transporting Materials in Perovskite Solar Cells
Authors: Khan Danish , Liu Xiaoyuan , Qu Geping , Nath Amit Ranjan , Xie Pengfei , Xu Zong‐Xiang 
Published: December 2022

AbstractPerovskite solar cells (PSCs) have grabbed much attention of researchers owing to their quick rise in power conversion efficiency (PCE). However, long‐term stability remains a hurdle in commercialization, partly due to the inclusion of necessary hygroscopic dopants in hole transporting materials, enhancing the complexity and total cost. Generally, the efforts in designing dopant‐free hole transporting materials (HTMs) are devoted toward small molecule and polymeric HTMs, where small molecule based HTMs (SM‐HTMs) are dominant due to their reproducibility, facile synthesis, and low cost. Still, the state‐of‐art dopant‐free SM‐HTM has not been achieved yet, mainly because of the knowledge gap between device engineering and molecular designs. From a molecular engineering perspective, this article reviews dopant‐free SM‐HTMs for PSCs, outlining analyses of chemical structures with promising properties toward achieving effective, low‐cost, and scalable materials for devices with higher stability. Finally, an outlook of dopant‐free SM‐HTMs toward commercial application and insight into the development of long‐term stability PSCs devices is provided.
Crisis? What Crisis? Making Humanitarian Crises Visible in the History of Emotions
Authors: Martín-Moruno Dolores 
Published: December 2022

AbstractThis introductory chapter carves out a space for the histories of emotions and the senses within humanitarian visual culture, by examining the performativity of images in the construction of humanitarian crises. To this end, it analyses how illustrated pamphlets, cinema talks, photographs, documentary films, graphic novels and virtual reality environments have mobilised the affective responses of audiences, thus creating transnational networks of solidarity from the nineteenth century to present-day society. Furthermore, it questions presentist conceptions of pain, compassion, sympathy and empathy, as well as that these emotions have been the natural reaction of spectators regarding the pain of others. The chapter concludes by showing the potential of investigating related conceptions of indignation, shame, rage and horror in order to advocate for a history of humanitarian experiences.
Stingless bee (Apidae: Meliponini) foraging and predation at trunk resin sources: Rare observations captured with microcontroller-based camera traps in a lowland dipterocarp forest
Authors: Chui S. X. , Wahab R. B. H. A. , Leonhardt S. D. 
Published: December 2022

AbstractAn intriguing yet little studied aspect of social insect foraging is the use of resources other than food. We are interested in the collection of plant resins for nest construction and defense by tropical stingless bees. However, direct observations of stingless bee foraging and potential predation activities by natural enemies at resin sources are particularly rare and therefore require a trade-off between observation time and the number of sources observed. We used affordable remote microcontroller-based camera traps to enable for longer durations of continuous and simultaneous monitoring of resin foraging at multiple resin sources in an undisturbed lowland dipterocarp rainforest in Brunei Darussalam (Borneo). Analysis of photos from camera traps shows that stingless bee visitation to resin sources was uncommon at resin wounds in the forest understory (27.3%). Bees visiting wounds displayed a propensity for short and regular resin foraging bouts of up to a few days to particular resin sources. Where there were encounters between stingless bees and natural enemies, i.e., assassin bugs at resin sources, there was a 100% predation success rate (n = 4). Our study suggests that microcontroller-based camera traps complement or may even replace in-person field observations, in particular for observations of organisms or interactions occurring at low abundance. They allow for systemically collected observations which can form the basis for hypothesis-driven research as part of “next-generation natural history”.
Critical View of Safety in Laparoscopic Cholecystectomy: A Systematic Review of Current Evidence and Future Perspectives
Authors: Manatakis Dimitrios K. , Antonopoulou Maria‐Ioanna , Tasis Nikolaos , Agalianos Christos , Tsouknidas Ioannis , Korkolis Dimitrios P. , Dervenis Christos 
Published: December 2022

AbstractBackgroundThe Critical View of Safety (CVS) has been increasingly recognised as the standard method for identification of the cystic structures, to prevent vasculobiliary injuries during laparoscopic cholecystectomy, however, its adoption has been anything but universal. A significant proportion of surgeons has a poor understanding of the three requirements. To bridge this gap between theory and practice, we aimed to summarise the available evidence on CVS, emphasising on current debates and future perspectives.MethodWe systematically reviewed the literature (1995–2021), to identify studies reporting on the CVS. Eligible articles were classified according to methodology and key idea. A quantitative analysis was performed to evaluate effectiveness of the CVS in preventing bile duct injury (BDI).Results150 relevant articles were identified, focusing on six main points, (1) safety and effectiveness, (2) intraoperative documentation, (3) complementary imaging techniques, (4) bail‐out alternatives, (5) adoption among surgeons, and (6) education and training. The quantitative analysis included 11 studies, with 10,938 cases. Overall, the CVS was achieved in 92.5%. Conversion rate was 4.8%. CVS‐related BDI was 0.09% (0.05% technical errors and 0.04% misidentification errors).ConclusionRoutine application of the CVS reduces BDI, but does not eliminate them altogether. Besides operative notes, the CVS should be documented by an imaging modality of sufficient quality. When the CVS cannot be safely established, the threshold for bail‐out alternatives or complementary imaging should be low. Adoption by the surgical community worldwide shows great variability and focus should be placed on training through structured educational modules.