bluuebunny/crossref_metadata_2025 huggingface dataset:
Recovery, Purification, Analysis and Chemical Modification of a Waste Cooking Oil
Authors: Azzena Ugo , Montenero Angelo , Carraro Massimo , Crisafulli Rosella , De Luca Lidia , Gaspa Silvia , Muzzu Andrea , Nuvoli Luca , Polese Riccardo , Pisano Luisa , Pintus Elisa , Pintus Salvatore , Girella Alessandro , Milanese Chiara
Published: July 2022

Disposing of residual cooking oil is a major environmental concern, so its conversion into commercial products is a desirable goal. To design the chemical modification of a domestic waste oil into valuable biochemicals other than biodiesel, we analyzed a series of its samples, collected over a period of three years, using quantitative 1H-NMR. This analysis, allowing a quick determination of its main chemical characteristics, has rendered the image of a vegetable oil with an almost constant composition over time and with a relative low content of saturated fatty acids. To make this collection protocol more economical, we projected its chemical transformation into esters and epoxidized esters of long chain and branched alcohols, which could find employment as biolubricants and/or bioplasticizers. The one-pot transesterification of the waste cooking oil into esters of commercially available and biodegradable Guerbet alcohols was obtained under environmentally friendly conditions by employing commercial CaO as a catalyst. Additionally, microwave irradiation of this reaction allowed to optimize the energy expenditure by significantly reducing the reaction time as compared with reactions run under conventional heating. To improve their oxidation stabilities, the resulting esters were epoxidized under conditions useful to minimize side-reactions. An investigation of their main rheological properties shows that some of the resulting products display characteristics that make their use as biolubricants or bioplasticizers predictable. The entire process represents a virtuous example of circular economy.

Graphical Abstract
Composting the Invasive Toxic Seaweed Rugulopteryx okamurae Using Five Invertebrate Species, and a Mini-review on Composting Macroalgae
Authors: Patón D. , García-Gómez J. C. , Loring J. , Torres A.
Published: July 2022

Since 2015, the invasive alga Rugulopteryx okamurae has explosively burst into the waters of the Strait of Gibraltar with serious repercussions on marine biodiversity, tourism and the fishing industry. Its elimination entails an enormous cost for the municipalities in the area and vermicomposting is proposed as a solution, but the anti-food secondary metabolites of the algae make it unfeasible. This work analyzed for the first time the bioremediation of this toxic algae using vermicomposting (Dendrobaena veneta and Eisenia fetida), blatticomposting (Eublaberus spp. “Ivory”), mealworms (Tenebrio molitor) and black soldier fly larvae (BSFL, Hermetia illucens). Both BSFL composting and blatticomposting are viable alternatives, as the toxics in the algae do not affect the long-term survival, growth or reproduction of these invertebrates. All other tested species do not resist consumption of R. okamurae. In parallel, a synthesis of current knowledge on marine macroalgae composting has been carried out. The results of this work will allow the use of insect farms in the upwelling areas that will eliminate algae, providing fertilizers and animal proteins that will be an economic aid to the municipalities in the affected coasts of southern Mediterranean Spain.

Graphical Abstract
Two novel qPCR assays to enhance black rail (Laterallus jamaicensis) eDNA surveys in the United States
Authors: Feist Sheena M. , Guan Xin , Malmfeldt Madeleine P. , Lance Richard F.
Published: July 2022

Black rails (Laterallus jamaicensis) are a rare and protected bird species. They are also notoriously difficult to monitor. eDNA surveys have proven beneficial for the detection of this elusive species, but additional developments are needed to enhance eDNA survey utility (including reliability of outcomes) in light of black rail status and associated high-profile conservation actions. The use of multiple assays functions to increase eDNA detection confidence by increasing the probability of amplification in low concentration, highly degraded samples (i.e., reducing the risk of false negatives) and by providing a multiplicative test for ruling out contamination as the source of qPCR amplification (i.e., reducing the risk of false positives). The two eDNA assays developed, optimized, and validated in this study will prove valuable for the continued surveillance of the secretive black rail, offering data to measure its distribution and occurrence over time and as influenced by anticipated climate-change-induced disturbances and/or habitat restoration/creation initiatives. The assays are applicable to both Eastern black rails and California black rails, and do not exhibit qPCR amplification in non-target, co-distributed taxa (including other Rallidae species) in the United States.
Consolidating understanding of variation as part of STEM: experimenting with plant growth
Authors: Watson Jane , Wright Suzie , Fitzallen Noleine , Kelly Ben
Published: July 2022

Integrated STEM activities are espoused as appropriate for enhancing student learning in relation to statistical concepts; however, a greater understanding of the way in which students’ ideas about those concepts develop is needed to maximise the learning potential offered by engagement in STEM activities. For this study, plant growth was chosen as a topic from the Year 6 Australian Science Curriculum as an appropriate context to employ aspects of the four STEM disciplines to explore students’ developing ideas about variation. Sixty-four Year 6 students across three school terms worked in groups of four to trial various treatments and their effects on the growth of radish or wheat seeds. This report considers two aspects of student learning related to this topic based on (i) the formative assessment of features of students’ workbook entries specifically related to variation during the part of the classroom activity based on their TinkerPlots graphs and (ii) the later summative evidence of learning in responses to end-of-year questions on the activity for 56 of the students. The workbook entries are presented via a qualitative analysis to provide evidence of the forming of understanding of variation in a STEM context, with the SOLO Taxonomy being employed to assess the longer-term evidence and developmental nature of that learning. Overall, a broader picture has emerged of the potential for developing appreciation of variation in a STEM context in primary school.
The multi-kinase inhibitor afatinib serves as a novel candidate for the treatment of human uveal melanoma
Authors: Shu Wenying , Zhu Xue , Wang Ke , Cherepanoff Svetlana , Conway R. Max , Madigan Michele C. , Zhu Hong , Zhu Ling , Murray Michael , Zhou Fanfan
Published: July 2022

Purpose

Uveal melanoma (UM) is the most common intraocular malignancy in adults with a poor prognosis and a high recurrence rate. Currently there is no effective treatment for UM. Multi-kinase inhibitors targeting dysregulated pro-tumorigenic signalling pathways have revolutionised anti-cancer treatment but, as yet, their efficacy in UM has not been established. Here, we identified the multi-kinase inhibitor afatinib as a highly effective agent that exerts anti-UM effects in in vitro, ex vivo and in vivo models.

Methods

We assessed the anti-cancer effects of afatinib using cell viability, cell death and cell cycle assays in in vitro and ex vivo UM models. The signaling pathways involved in the anti-UM effects of afatinib were evaluated by Western blotting. The in vivo activity of afatinib was evaluated in UM xenograft models using tumour mass measurement, PET scan, immunohistochemical staining and TUNEL assays.

Results

We found that afatinib reduced cell viability and activated apoptosis and cell cycle arrest in multiple established UM cell lines and in patient tumour-derived primary cell lines. Afatinib impaired cell migration and enhanced reproductive death in these UM cell models. Afatinib-induced cell death was accompanied by activation of STAT1 expression and downregulation of Bcl-xL and cyclin D1 expression, which control cell survival and cell cycle progression. Afatinib attenuated HER2-AKT/ERK/PI3K signalling in UM cell lines. Consistent with these observations, we found that afatinib suppressed tumour growth in UM xenografted mice.

Conclusion

Our data indicate that afatinib activates UM cell death and targets the HER2-mediated cascade, which modulates STAT1-Bcl-xL/cyclin D1 signalling. Thus, targeting HER2 with agents like afatinib may be a novel therapeutic strategy to treat UM and to prevent metastasis.
Insights into simultaneous adsorption and oxidation of antimonite [Sb(III)] by crawfish shell-derived biochar: spectroscopic investigation and theoretical calculations
Authors: Chen Hanbo , Gao Yurong , Li Jianhong , Sun Chenghua , Sarkar Binoy , Bhatnagar Amit , Bolan Nanthi , Yang Xing , Meng Jun , Liu Zhongzhen , Hou Hong , Wong Jonathan W.C. , Hou Deyi , Chen Wenfu , Wang Hailong
Published: July 2022

Removal of antimonite [Sb(III)] from the aquatic environment and reducing its biotoxicity is urgently needed to safeguard environmental and human health. Herein, crawfish shell-derived biochars (CSB), pyrolyzed at 350, 500, and 650°C, were used to remediate Sb(III) in aqueous solutions. The adsorption data best fitted to the pseudo-second-order kinetic and Langmuir isotherm models. Biochar produced at 350°C (CSB350) showed the highest adsorption capacity (27.7 mg g− 1), and the maximum 78% oxidative conversion of Sb(III) to Sb(V). The adsorption results complemented with infrared (FTIR), X-ray photoelectron (XPS), and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy analyses indicated that the adsorption of Sb(III) on CSB involved electrostatic interaction, surface complexation with oxygen-containing functional groups (C = O, O = C–O), π–π coordination with aromatic C = C and C–H groups, and H-bonding with –OH group. Density functional theory calculations verified that surface complexation was the most dominant adsorption mechanism, whilst π–π coordination and H-bonding played a secondary role. Furthermore, electron spin resonance (ESR) and mediated electrochemical reduction/oxidation (MER/MEO) analyses confirmed that Sb(III) oxidation at the biochar surface was governed by persistent free radicals (PFRs) (•O2− and •OH) and the electron donating/accepting capacity (EDC/EAC) of biochar. The abundance of preferable surface functional groups, high concentration of PFRs, and high EDC conferred CSB350 the property of an optimal adsorbent/oxidant for Sb(III) removal from water. The encouraging results of this study call for future trials to apply suitable biochar for removing Sb(III) from wastewater at pilot scale and optimize the process.

Graphical abstract
Study of the isothermal bainitic transformation and austenite stability in an advanced Al-rich medium-Mn steel
Authors: Morawiec M. , Ruiz-Jimenez V. , Garcia-Mateo C. , Jimenez J. A. , Grajcar A.
Published: July 2022

Isothermal bainitic transformation of a lean medium-Mn steel containing (in mass%) 0.18C–3.6Mn–1.7Al–0.23Si–0.2Mo–0.04–Nb after full austenitization at 1100 ºC was studied by means of high resolution dilatometry. The effects of isothermal holding temperatures ranging from 450 to 350 °C on the bainitic transformation kinetics was studied experimentally characterizing the microstructure present after a holding time ranging from 15 min to 2 h. The obtained results showed that the bainitic transformation is uncompleted at temperatures above 425 °C. The carbon enrichment of the austenite during isothermal treatment at 450 °C and 425 °C is not enough to avoid martensitic transformation of the austenite during cooling to room temperature. Thus, it is obtained a mixed structure including bainitic ferrite and martensite. Decreasing the austempering temperature resulted in a more pronounced bainite formation. The kinetics of the transformation during austempering at 350ºC is quite similar to that observed at 400 °C, so that 60 min are needed in both cases to complete the reaction. However, local variations in chemical composition associated to segregation of Mn and Al during casting solidification results in differences in the transformation rate of bainitic reaction between different areas in the material. A balance difference between the dendritic and interdendritic areas is responsible for the differences observed among test samples in the kinetics of the isothermal bainitic transformation and the final microstructure.
Effective Variable Depth Local Search for the Budgeted Maximum Coverage Problem
Authors: Zhou Jianrong , Zheng Jiongzhi , He Kun
Published: July 2022

We address the Budgeted Maximum Coverage Problem (BMCP), which is a natural and more practical extension of the standard 0–1 knapsack problem and the set cover problem. Given m elements with nonnegative weights, n subsets of elements with nonnegative costs, and a total budget, BMCP aims to select some subsets such that the total cost of selected subsets does not exceed the budget, and the total weight of associated elements is maximized. In this paper, we propose a variable depth local search algorithm (VDLS) for the BMCP. VDLS first generates an initial solution by a greedy algorithm, then iteratively improves the solution through a partial depth-first search method, that can improve the solution by simultaneously changing the states (selected or not) of multiple subsets. Such method allows VDLS to explore the solution space widely and deeply, and to yield high-quality solutions. We further propose a neighbor structure to boost the algorithm performance, that is, both subsets have a neighbor relation if they share at least one common associated element. By applying the neighbor structure, VDLS can adjust the selected subsets while losing as few covered elements as possible. Since the existing BMCP benchmarks only have simple structures and small scales, we design 60 new instances with relatively large scales and complex structures to enrich the diversity of the BMCP instances. Experimental results on 30 public instances and 60 new instances we designed demonstrate that VDLS significantly outperforms the existing heuristic and the general CPLEX exact solver.
Rock-cut façades: conveyors of ‘false’ monumentality in Byzantine Cappadocia
Authors: Öztürk Büke Fatma Gül
Published: July 2022

The monumental rock-cut façades of the tenth to eleventh century-mansions – so-called courtyard complexes – in Cappadocia, central Turkey, are rare examples of secular Byzantine architecture. While these symmetrically designed façades adorned with superimposed arches differ from the simpler ones (both carved and built) in the region, they bear striking similarities to others from the broader Mediterranean basin. This article offers new insights into the discussion on the uniqueness of the rock-cut façades of courtyard complexes and reconsiders the raison d’être of this ‘false’ monumentality in the rural setting of Byzantine Cappadocia.
Hegel's Circles: Self-Surprise in the Subjective Logic
Authors: Novakovic Andreja
Published: July 2022

Hegel's Science of Logic tracks the self-contained and self-generated development of what Hegel calls the concept. My question is: can the concept in the Logic surprise itself? I argue that the answer to that question is yes—the concept can surprise itself when it rediscovers itself in a place it did not expect to be. I first clarify the kind of perspective that the Logic asks us as readers to occupy and its difference from the perspective inside the ‘opposition’ of consciousness. I then provide an example of the concept's self-surprise, namely, the transition from subjective to realized purpose in the Subjective Logic. I conclude by drawing out some implications of self-surprise for Hegel's method in the Logic and in the subsequent Realphilosophie.
Diffraction of shock waves through a non-quiescent medium
Authors: Thethy Bhavraj S. , Rezay Haghdoost Mohammad , Kirby Rhiannon , Seo Bonggyun , Nadolski Maikel , Zenker Christian , Oevermann Michael , Klein Rupert , Oberleithner Kilian , Edgington-Mitchell Daniel
Published: July 2022

An investigation of shock diffraction through a non-quiescent background medium is presented using both experimental and numerical techniques. Unlike diffracting shocks in quiescent media, a spatial distortion of the shock front occurs, producing a region of constant shock angle. An example of this process arises in the exhaust from a pulse-detonation combustor. As the background velocity is increased, such as through the inclusion of a converging nozzle at the exhaust, the spatial distortion becomes more apparent. Numerical simulations using a compressible Euler solver demonstrate that the distortion is not due to the geometrical influence of the nozzle, but rather is a function of the magnitude of the background flow velocity. The distortion is studied using a modified geometrical shock dynamics formulation which includes the background flow and is validated against experiments. A simple model is presented to predict the shock distortion angle in the weak-shock limit. Finally, the axial decay behaviour of the shock is investigated and it is shown that the advection of the shock by the background flow delays the arrival of the head and tail of the expansion characteristic at the centreline. This leads to an increase in the rate of decay of the shock Mach number as the background flow velocity is increased.
Neutralizing Secularism: Religious Antiliberalism and the Twentieth-Century Global Ecumenical Project
Authors: Akande Rabiat
Published: July 2022

A marked feature of the contemporary U.S. constitutional landscape is the campaign by an Evangelical-Catholic coalition against the idea of secularism, understood by this alliance to mean the exclusion of religion from the state and its progressive marginalization from social life. Departing from the tendency to treat this project as a national phenomenon, this article places it within a longer global genealogy of an earlier international Christian ecumenical effort to combat secularism. The triumph of that campaign culminated in the making of Article 18 of the Universal Declaration of Human Rights, now considered the paradigmatic international legal provision on religious liberty. Article 18’s protection of the rights to proselytize and convert, I argue, was a product of an impassioned contestation between an ecumenical movement keen on securing the prerogative to spread the gospel to the non-Christian world and a secularism in a strange alliance with Islam in the region that held the greatest promise for the evangelical enterprise—Muslim Africa. In excavating the genealogy of ecumenical thought as it developed a critique of the so-called secularist threat, I recover the delicate links between the contemporary U.S. anti-secular campaign and the earlier ecumenical efforts.
JOAN LA BARBARA AND THE NEW WILDERNESS PRESERVATION BAND, 1973–74
Authors: O'Brien Kerry
Published: July 2022

Joan La Barbara's involvement in the New Wilderness Preservation Band is an often cited but virtually unknown period of her history. And yet it may have been one of the most generative periods of her early career. Drawing upon archival documents, unreleased recordings and interviews, I narrate the history of the band, including La Barbara's early use of extended vocal techniques. I argue that her work in the band reflected a mode of collaborative authorship that is often lost in retellings of her history, and that her emergence in 1974 as a composer reflected a broader tension around authorship in bands and ensembles during these years.
Problematising war: Towards a reconstructive critique of war as a problem of deviance
Authors: Andrä Christine
Published: July 2022

This article redirects extant critiques of the modern problem of war at this problem's underlying logic of deviance. According to this logic, war constitutes a kind of international conduct that contravenes behavioural norms and that can be corrected through diagnostic and didactic means. Thereby, war is rendered into a problem falling within the scope of human agency. However, this agency rests on and reproduces this logic's constitutive blind spots. Therefore, it seems imperative to develop ways of problematising war otherwise. The article provides two starting points for (critical) IR scholarship seeking to undertake such a project. Firstly, it combines two Foucaultian tools, the concept of problematisation and the method of genealogy, to direct critique at the logics underlying our evaluative – analytical, ethical, and political – judgements. Secondly, it uses these tools to trace the contingent emergence of the logic of deviance in a crucial example within the wider genealogy of the problem of war: the Carnegie Endowment's commission of inquiry into the Balkan Wars of 1912 and 1913. Based on original archival research, I highlight different elements of this inquiry's problematisation of war – its frames, assumptions, ways of knowing, and subjects of knowledge – to make them available for reconstruction.
LITHIC AND FAUNAL EVIDENCE FOR CRAFT PRODUCTION AMONG THE MIDDLE PRECLASSIC MAYA AT CEIBAL, GUATEMALA
Authors: Sharpe Ashley E. , Aoyama Kazuo
Published: July 2022

This study examines artifact production using lithic, animal bone, and shell materials at the lowland Maya site of Ceibal, Guatemala, to explore the emergence and societal role of early crafting specialists. During the Middle Preclassic period (1000–350b.c.), ancient Maya society went through a critical transition to sedentary settlements, including the development of large-scale monumental construction endeavors for ceremonial activities, increasingly nucleated settlement patterns, and the differential control of prestigious objects. Excavations across Ceibal recovered one of the largest Middle Preclassic assemblages of lithic and faunal material to date. We examine these materials in order to understand the nature of their manufacturing processes, the association between lithic production and bone/shell processing for meat and artifact production, and compare these activities with evidence from other Middle Preclassic sites and from the later Classic period. We find that Middle Preclassic middens are often disturbed or incorporated into later construction episodes over many generations, making the identification of such activities difficult, although not impossible, to identify archaeologically. Evidence for crafting is often found near ceremonial structures where Ceibal's early elite would have been present, suggesting that they were closely involved in the production process.
Hitting times for second-order random walks
Authors: FASINO DARIO , TONETTO ARIANNA , TUDISCO FRANCESCO
Published: July 2022

A second-order random walk on a graph or network is a random walk where transition probabilities depend not only on the present node but also on the previous one. A notable example is the non-backtracking random walk, where the walker is not allowed to revisit a node in one step. Second-order random walks can model physical diffusion phenomena in a more realistic way than traditional random walks and have been very successfully used in various network mining and machine learning settings. However, numerous questions are still open for this type of stochastic processes. In this work, we extend well-known results concerning mean hitting and return times of standard random walks to the second-order case. In particular, we provide simple formulas that allow us to compute these numbers by solving suitable systems of linear equations. Moreover, by introducing the ‘pullback’ first-order stochastic process of a second-order random walk, we provide second-order versions of the renowned Kac’s and Random Target Lemmas.
Evaluation of the Prevalence of Malaria and Cutaneous Leishmaniasis in the Pre- and Post-Disaster Years in Iran
Authors: Najjari Mohsen , Rezaeian Shahab , Sheikhbardsiri Hojjat , Afgar Ali , Ebrahimipour Mohammad
Published: July 2022

Background/Objective:

Natural disasters (NDs) are calamitous phenomena that can increase the risk of infections in disaster-affected regions. This study aimed to evaluate the frequency of malaria and cutaneous leishmaniasis (CL) before and after earthquakes, floods, and droughts during the past four decades in Iran.

Methods:

Malaria and CL data were obtained from the reports of the Ministry of Health and Medical Education in Iran for the years 1983 through 2017. The data of NDs were extracted from the Centre for Research on the Epidemiology of Disasters (CRED). Interrupted time series analysis with linear regression modeling was used to estimate time trends of mentioned diseases in pre- and post-disaster conditions.

Results:

For the periods preceding the disasters drought and flood, a decreasing time trend for malaria and CL was found over time. The time trend of malaria rate preceding the 1990 earthquake was stable, a downward trend was found after 1990 disaster until 1997 (β coefficient: −10.7; P = .001), and this declining trend was continued after 1997 disaster (β coefficient: −2.7; P = .001). The time trend of CL rate preceding the 1990 earthquake had a declining trend, an upward trend was found after 1990 earthquake until 1999 (β coefficient: +8.7; P = .293), and a slight upward trend had also appeared after 1999 earthquake (β coefficient: +0.75; P = .839).

Conclusion:

The results of the current study indicated the occurrence of earthquakes, floods, and droughts has no significant effect on the frequency of malaria and CL in Iran.
How to quantify bilingual experience? Findings from a Delphi consensus survey
Authors: De Cat Cécile , Kašćelan Draško , Prévost Philippe , Serratrice Ludovica , Tuller Laurie , Unsworth Sharon ,   The Q-BEx Consortium
Published: July 2022

While most investigations of bilingualism document participants’ language background, there is an absence of consensus on how to quantify bilingualism. The high number of different language background questionnaires used by researchers and practitioners jeopardises data comparability and cross-pollination between research and practice. Using the Delphi consensus survey method, we asked 132 panellists (researchers, speech and language therapists, teachers) from 29 countries to rate 124 statements on a 5-point agreement scale. Consensus was pre-defined as 75% agreement threshold. After two survey rounds, 79% of statements reached consensus. The need for common measures to quantify bilingualism was acknowledged by 96% of respondents. Agreement was reached to document: language exposure and use, language difficulties, proficiency (when it cannot be assessed directly), education and literacy, input quality, language mixing practices, and attitudes (towards languages and language mixing). We discuss the implications of these findings for the creation of a new tool to quantify bilingual experience.
Nutrient profiles of commercially produced complementary foods available in Cambodia, Indonesia and the Philippines
Authors: Bassetti Eleonora , Zehner Elizabeth , Mayhew Susannah H , Nasser Nadine , Mulder Anzélle , Badham Jane , Sweet Lara , Crossley Rachel , Pries Alissa M
Published: July 2022

Objective:

To assess the nutritional suitability of commercially produced complementary foods (CPCF) marketed in three South-East Asian contexts.

Design:

Based on label information declared on the products, nutrient composition and content of CPCF were assessed against the WHO Europe nutrient profile model (NPM). The proportion of CPCF that would require a ‘high sugar’ warning was also determined.

Setting:

Khsach Kandal district, Cambodia; Bandung City, Indonesia; and National Capital Region, Philippines.

Participants:

CPCF products purchased in Cambodia (n 68) and Philippines (n 211) in 2020, and Indonesia (n 211) in 2017.

Results:

Only 4·4 % of products in Cambodia, 10·0 % of products in Indonesia and 37·0 % of products in the Philippines fully complied with relevant WHO Europe NPM nutrient composition requirements. Sixteen per cent of CPCF in Cambodia, 27·0 % in Indonesia and 58·8 % in the Philippines contained total sugar content levels that would require a ‘high sugar’ warning.

Conclusions:

Most of the analysed CPCF were not nutritionally suitable to be promoted for older infants and young children based on their nutrient profiles, with many containing high levels of sugar and sodium. Therefore, it is crucial to introduce new policies, regulations and standards to limit the promotion of inappropriate CPCF in the South-East Asia region.
The contribution of breastfeeding to a healthy, secure and sustainable food system for infants and young children: monitoring mothers’ milk production in the food surveillance system of Norway
Authors: Smith Julie P , Lande Britt , Johansson Lars , Baker Phillip , Bærug Anne
Published: July 2022

Objective:

The mother–child breastfeeding dyad is a powerful force for achieving healthy, secure and sustainable food systems. However, food system reports exclude breastfeeding and mother’s milk. To help correct this omission and give breastfeeding women greater visibility in food systems dialogue and action, we illustrate how to estimate mother’s milk production and incorporate this into food surveillance systems, drawing on the pioneering experience of Norway to show the potential value of such analysis.

Design:

The estimates use data on the proportion of children who are breastfed at each month of age (0–24 months), annual number of live births and assumptions on daily human milk intake at each month. New indicators for temporal and cross-country comparisons are considered.

Setting:

It is assumed that a breastfeeding mother on average produces 306 l of milk during 24 months of lactation.

Participants:

The annual number of live births is from Statistics Norway. Data for any breastfeeding at each month of age, between 0 and 24 months, are from official surveys in 1993, 1998–1999, 2006–2007, 2013 and 2018–2019.

Results:

Estimated total milk production by Norwegian mothers increased from 8·2 to 10·1 million l per year between 1993 and 2018–2019. Annual per capita production increased from 69 to 91 l per child aged 0–24 months.

Conclusions:

This study shows it is feasible and useful to include human milk production in food surveillance systems as an indicator of infant and young child food security and dietary quality. It also demonstrates significant potential for greater milk production.
Image-Based Analysis of Weathered Slag for Calculation of Transport Properties and Passive Carbon Capture
Authors: Khudhur Faisal W K , Macente Alice , MacDonald John M , Daly Luke
Published: July 2022

Weathering of silicate-rich industrial wastes such as slag can reduce emissions from the steelmaking industry. During slag weathering, different minerals spontaneously react with atmospheric CO2 to produce calcite. Here, we evaluate the CO2 uptake during slag weathering using image-based analysis. The analysis was applied to an X-ray computed tomography (XCT) dataset of a slag sample associated with the former Ravenscraig steelworks in Lanarkshire, Scotland. The element distribution of the sample was studied using scanning electron microscopy (SEM), coupled with energy-dispersive spectroscopy (EDS). Two advanced image segmentation methods, namely trainable WEKA segmentation in the Fiji distribution of ImageJ and watershed segmentation in Avizo ® 9.3.0, were used to segment the XCT images into matrix, pore space, calcite, and other precipitates. Both methods yielded similar volume fractions of the segmented classes. However, WEKA segmentation performed better in segmenting smaller pores, while watershed segmentation was superior in overcoming the partial volume effect presented in the XCT data. We estimate that CO2 has been captured in the studied sample with an uptake between 20 and 17 kg CO2/1,000 kg slag for TWS and WS, respectively, through calcite precipitation.
After the New Left: On Tsumura Takashi's Early Writings and Proto-“Contemporary Thought” in Japan
Authors: Woolsey Jeremy
Published: July 2022

This article positions the early career of the Japanese activist and writer Tsumura Takashi as anticipating, from an intellectual and historical-media standpoint, the surge of interest in gendai shisō (“contemporary thought,” i.e. French theory) in 1980s Japan. Often understood as the devolution of theory into a mere commercial fad, the gendai shisō boom—in its reliance on a host of writers who worked at a distance from traditional academic publishing networks—promoted an ethos of interdisciplinary and transgressive knowledge production. Tracing Tsumura's interest in structuralism and post-structuralism as an outgrowth of his participation in the student movement, the article provides a prehistory of gendai shisō in the late 1960s and early 1970s. It argues that Tsumura's creative appropriation of structuralism and post-structuralism took place at a crucial juncture when the academic print networks that had legitimated intellectuals in postwar Japan were being hollowed out from within and without.
India’s Opportunities and Challenges in Establishing a Twin Registry: An Unexplored Human Resource for the World’s Second-Most Populous Nation
Authors: Dhar Ruby , Rana Shweta , Srivastava Tryambak Pratap , Nayek Arnab , Sharma Jai Bhagwan , Kaur Digjeet , Kalari Krishna R. , Singh Harpreet , Karmakar Subhradip
Published: July 2022

Nature and nurture have always been a prerogative of evolutionary biologists. The environment’s role in shaping an organism’s phenotype has always intrigued us. Since the inception of humankind, twinning has existed with an unsettled parley on the contribution of nature (i.e. genetics) versus nurture (i.e. environment), which can influence the phenotypes. The study of twins measures the genetic contribution and that of the environmental influence for a particular trait, acting as a catalyst, fine-tuning the phenotypic trajectories. This is further evident because a number of human diseases show a spectrum of clinical manifestations with the same underlying molecular aberration. As of now, there is no definite way to conclude just from the genomic data the severity of a disease or even to predict who will get affected. This greatly justifies initiating a twin registry for a country as diverse and populated as India. There is an unmet need to set up a nationwide database to carefully curate the information on twins, serving as a valuable biorepository to study their overall susceptibility to disease. Establishing a twin registry is of paramount importance to harness the wealth of human information related to the biomedical, anthropological, cultural, social and economic significance.
The Microwave Snow Grain Size: A New Concept to Predict Satellite Observations Over Snow‐Covered Regions
Authors: Picard G. , Löwe H. , Domine F. , Arnaud L. , Larue F. , Favier V. , Le Meur E. , Lefebvre E. , Savarino J. , Royer A.
Published: July 2022

Satellite observations of snow‐covered regions in the microwave range have the potential to retrieve essential climate variables such as snow height. This requires a precise understanding of how microwave scattering is linked to snow microstructural properties (density, grain size, grain shape and arrangement). This link has so far relied on empirical adjustments of the theories, precluding the development of robust retrieval algorithms. Here we solve this problem by introducing a new microstructural parameter able to consistently predict scattering. This “microwave grain size” is demonstrated to be proportional to the measurable optical grain size and to a new factor describing the chord length dispersion in the microstructure, a geometrical property known as polydispersity. By assuming that the polydispersity depends on the snow grain type only, we retrieve its value for rounded and faceted grains by optimization of microwave satellite observations in 18 Antarctic sites, and for depth hoar in 86 Canadian sites using ground‐based observations. The value for the convex grains (0.6) compares favorably to the polydispersity calculated from 3D micro‐computed tomography images for alpine grains, while values for depth hoar show wider variations (1.2–1.9) and are larger in Canada than in the Alps. Nevertheless, using one value for each grain type, the microwave observations in Antarctica and in Canada can be simulated from in‐situ measurements with good accuracy with a fully physical model. These findings improve snow scattering modeling, enabling future more accurate uses of satellite observations in snow hydrological and meteorological applications.
Rupture Model for the 29 July 2021 MW 8.2 Chignik, Alaska Earthquake Constrained by Seismic, Geodetic, and Tsunami Observations
Authors: Ye Lingling , Bai Yefei , Si Daojun , Lay Thorne , Cheung Kwok Fai , Kanamori Hiroo
Published: July 2022

A great earthquake struck the Semidi segment of the plate boundary along the Alaska Peninsula on 29 July 2021, re‐rupturing part of the 1938 rupture zone. The 2021 MW 8.2 Chignik earthquake occurred just northeast of the 22 July 2020 MW 7.8 Simeonof earthquake, with little slip overlap. Analysis of teleseismic P and SH waves, regional Global Navigation Satellite System (GNSS) displacements, and near‐field and far‐field tsunami observations provides a good resolution of the 2021 rupture process. During ∼60‐s long faulting, the slip was nonuniformly distributed along the megathrust over depths from 32 to 40 km, with up to ∼12.9‐m slip in an ∼170‐km‐long patch. The 40–45 km down‐dip limit of slip is well constrained by GNSS observations along the Alaska Peninsula. Tsunami observations preclude significant slip from extending to depths <25 km, confining all coseismic slip to beneath the shallow continental shelf. Most aftershocks locate seaward of the large‐slip zones, with a concentration of activity up‐dip of the deeper southwestern slip zone. Some localized aftershock patches locate beneath the continental slope. The surface‐wave magnitude MS of 8.1 for the 2021 earthquake is smaller than MS = 8.3–8.4 for the 1938 event. Seismic and tsunami data indicate that slip in 1938 was concentrated in the eastern region of its aftershock zone, extending beyond the Semidi Islands, where the 2021 event did not rupture.
Quantification of the Seasonal Intrusion of Water Masses and Their Impact on Nutrients in the Beibu Gulf Using Dual Water Isotopes
Authors: Lao Qibin , Zhang Shuwen , Li Zhiyang , Chen Fajin , Zhou Xin , Jin Guangzhe , Huang Peng , Deng Ziyun , Chen Chunqing , Zhu Qingmei , Lu Xuan
Published: July 2022

A new data set of seasonal stable water isotopes (δD and δ18O) and temperature‐salinity profiles was applied to improve our understanding of water mass distributions and their impact on the environment of the Beibu Gulf (BG). Our study revealed that the coastal current (CC), West‐Guangdong coastal current (WGCC), and South China Sea water (SCSW) were the three dominant water masses in the BG, and their influence was exhibited in seasonal variations. The CC was the dominant contributor to the BG water during summer (43%) and fall (45%), while it changed to the intrusion of SCSW with higher salinity in winter (57%). The contribution of WGCC to the BG was relatively stable during the three seasons (24%–31%). In addition, the nutrients in the BG were greatly affected by different water mixing occurring in the gulf. The nutrients mainly originated from the CC in summer (52%–68%) and fall (32%–69%), while the dominant source shifted to the WGCC in winter (36%–69%). Moreover, the contribution of SCSW to the nutrients loading (15%–49%) in the BG was relatively high due to its high contribution (57%) to the BG water during winter. These indicated that the BG has a stable input of external nutrients from different water masses to sustain primary production in the BG. Our study uses dual water isotopes to quantify the seasonal intrusion of water masses and their impact on nutrients, providing a new method to study the impact of the distribution of water masses on nutrients in the gulf.
Coupling Warm Rain With an Eddy Diffusivity/Mass Flux Parameterization: 2. Sensitivities and Comparison to Observations
Authors: Smalley M. A. , Suselj K. , Lebsock M. D. , Witte M. K.
Published: July 2022

This is the second part of the description and validation of the coupling of a warm‐rain microphysics scheme to a stochastic multi‐plume eddy‐diffusivity/mass‐flux parameterization. Part 1 provides the model description and initial validation of the parameterization in a single column model (SCM) against large eddy simulations. This manuscript provides additional comparisons against satellite observations of 500 unique simulation cases, an analysis of model parameter‐based sensitivities in those 500 cases, and an evaluation of the idealized LES case study paradigm for parameterization development. The SCM is forced by a weather reanalysis in the subtropical northeast Pacific region characterized by the stratocumulus‐to‐cumulus cloud transition. 18 scalar outputs are examined to identify the sensitivities to 22 of the model's parameters. The model is highly sensitive to parameters that determine the behavior of convective plumes, which collectively lead to the most sensitivity in 13 of the 18 outputs. Only a few parameters contribute sensitivities that are not highly correlated with those of other parameters. While forcing the model with two canonical field campaign cases results in similar picture of which parameters lead to high sensitivity in model outputs, the sensitivity magnitudes can be overestimated compared to when the model is forced by weather reanalyzes.
Coupling Warm Rain With an Eddy Diffusivity/Mass Flux Parameterization: 1. Model Description and Validation
Authors: Suselj Kay , Smalley Mark , Lebsock Matthew D. , Kurowski Marcin J. , Witte Mikael K. , Teixeira Joao
Published: July 2022

A new version of the stochastic multiplume Jet Propulsion Laboratory Eddy‐Diffusivity/Mass‐Flux (JPL‐EDMF) parameterization which consistently couples the simplified Khairoutdinov and Kogan (2000), https://doi.org/10.1175/1520-0493(2000)128<0229:ANCPPI>2.0.CO;2, warm phase cloud microphysical parameterization with the parameterization of cloud macrophysical and subgrid scale dynamical processes is described. The new parameterization combines the EDMF approach with an assumed shape of a joint probability density function of thermodynamic and kinematic variables which provide the basis for the computation of all parameterized processes. As far as we are aware this is the first attempt to consistently couple all of these parameterized processes in the EDMF framework. This paper is part one of a two paper series. Here, the JPL‐EDMF parameterization is described and benchmark simulations of precipitating stratocumulus and cumulus convection are performed in a single‐column‐model framework. The parameterization results compare favorably to the reference large‐eddy‐simulation results. In the second part (Smalley et al., 2022, https://doi.org/10.1029/2021MS002729) the JPL‐EDMF parameterization is validated for a wide range of observation‐based scenarios covering the continuous transition from subtropical stratocumulus to cumulus convection derived from global reanalysis, and parameterization uncertainties are studied in detail.
Analytical Expressions of Drainable and Fillable Porosity for Layered Soils Under Shallow Groundwater Environments
Authors: Xiao Xue , Xu Xu , Huang Guanhua
Published: July 2022

This study presents the analytical expressions of drainable and fillable porosity for layered soils under shallow groundwater environments. The expressions of drainable porosity λd and fillable porosity λf for two‐layered soils are first derived with water table depth change ∆d→0 under dynamic soil moisture conditions. The expressions of λd and λf consider the dynamic soil moisture conditions through the assumption of vertical fluxes in the unsaturated zone, varying as functions of water table elevation h. The analytical expressions of λd and λf have the same formula form but different values under evapotranspiration and recharge conditions, which is also verified using the numerical calculation. The case comparisons indicate that the vertical distribution of soil layers and the fluxes have significant effects on the performance of λd and λf. Our proposed expressions could effectively characterize the effects of soil layering and vertical fluxes on λd and λf. They could improve the accuracy of the previous expressions for single‐layer soils, and complement the lack of description for layered soils under dynamic soil moisture conditions in previous expressions. Furthermore, under the hydrostatic assumption (static equilibrium of soil water pressure distribution) in the unsaturated zone, the expressions of drainable porosity λd* and fillable porosity λf* for two‐layered soils with large water table fluctuations are derived based on λd and λf (asterisks in λd* and λf* is to distinguish them from λd and λf derived based on ∆d→0). Verification with drainage experimental data indicates that the proposed expressions can be extended to well capture the λd* and λf* changes for two‐layered soils. Application scenarios suggest that our analytical expressions of drainable and fillable porosity are useful to improve the application performance of related subsurface modeling and groundwater estimation for layered soils under shallow water table environments.
Dissolved Iron Patterns Impacted by Shallow Hydrothermal Sources Along a Transect Through the Tonga‐Kermadec Arc
Authors: Tilliette C. , Taillandier V. , Bouruet‐Aubertot P. , Grima N. , Maes C. , Montanes M. , Sarthou G. , Vorrath M.‐E. , Arnone V. , Bressac M. , González‐Santana D. , Gazeau F. , Guieu C.
Published: July 2022

In the Western Tropical South Pacific, a hotspot of dinitrogen‐fixing organisms has been identified. The survival of these species depends on the availability of dissolved iron (DFe); however, the source of this DFe is still unclear. DFe was measured along a transect from 175°E to 166°W near 19–21°S. The distribution of DFe showed high spatial variability: low concentrations (∼0.2 nmol kg−1) in the South Pacific gyre and high concentrations (up to 50 nmol kg−1) in the west of the Tonga arc, indicating that this arc is a clear boundary between iron‐poor and iron‐rich waters. An optimal multiparameter analysis was used to distinguish the relative importance of physical transport relative to non‐conservative processes on the observed distribution. This analysis demonstrated that the shallow hydrothermal sources present along the Tonga‐Kermadec arc are responsible for the high concentrations observed in the photic layer. Nevertheless, in contrast to what has been observed for deep hydrothermal plumes, our results highlighted the rapid decrease in DFe concentrations near shallow hydrothermal sources. This is likely due to a shorter residence time of surface water masses combined with several biogeochemical processes at play (precipitation, scavenging, biological uptake, and photoreduction). This study clearly highlights the role of shallow hydrothermal sources on the DFe cycle within the Tonga‐Kermadec arc where a strong link to biological activity in surface waters can be assessed, despite the small but significant fraction of DFe ultimately stabilized. It also emphasizes the need to consider the impact of these sources for a better understanding of the global iron cycle.