bluuebunny/crossref_metadata_2025 huggingface dataset:
Antioxidant Profile and Sensory Analysis in Olive Oils of Different Quality Grades
Authors: Frangipane Maria Teresa , Costantini Lara , Merendino Nicolò , Massantini Riccardo
Published: May 2023

Antioxidant capacity and sensory analysis of olive oils of different quality grades (Extra virgin, Virgin, Ordinary and Lampante) were investigated to define their possible differences useful for quality discrimination. Total phenolic content discriminated the sample Lampante olive oil (LVOO) with values (0.95 mg GAE/g) significantly lower than the other oils (1.85, 1.80 and 1.98 for A, D and E samples, respectively). The principal component analysis (PCA) revealed that sensory attributes (“bitter” and “pungent”) and antioxidant capacity (expressed by FRAP and ABTS•+) are positively correlated with Extra-virgin olive oil (EVOO) and Virgin olive oil (VOO) categories, evidencing high values. In conclusion, based on the evaluated parameters, differences between the different olive oil categories were found. Still, they did not allow us to clearly separate the two categories of Extra-virgin olive oil (EVOO) and Virgin olive oil (VOO) oils.
Application of Surveillance Principles in the Progressive Control Pathway for Global Control of Foot-and-Mouth Disease
Authors: Metwally Samia , Wagner Bruce , Salman Mo , Drewe Julian A. , Ferrari Giancarlo , McLaws Melissa , Gonzales Jose L.
Published: May 2023

Progressive control pathways provide a stepwise, measurable approach to disease control. Documenting program progress, assessing intervention efforts, and the achievement of interim outcomes depend on the capability of a surveillance system to provide useful information. We demonstrate a practical surveillance approach that progresses from measuring broad disease epidemiology and risk factors to specifically evaluating intervention options and documenting low disease prevalence. The process focusses on aligning components with disease program outcomes using foot-and-mouth disease as an example.
Dermal Fibroblasts as the Main Target for Skin Anti-Age Correction Using a Combination of Regenerative Medicine Methods
Authors: Zorina Alla , Zorin Vadim , Isaev Artur , Kudlay Dmitry , Vasileva Maria , Kopnin Pavel
Published: May 2023

This article includes the data from current studies regarding the pathophysiological mechanisms of skin aging and the regenerative processes occurring in the epidermis and dermis at the molecular and cellular level, mainly, the key role of dermal fibroblasts in skin regeneration. Analyzing these data, the authors proposed the concept of skin anti-age therapy that is based on the correction of age-related skin changes by stimulating regenerative processes at the molecular and cellular level. The main target of the skin anti-age therapy is dermal fibroblasts (DFs). A variant of the cosmetological anti-age program using the combination of laser and cellular methods of regenerative medicine is presented in the paper. The program includes three stages of implementation and defines the tasks and methods of each stage. Thus, laser technologies allow one to remodel the collagen matrix and create favorable conditions for DFs functions, whereas the cultivated autologous dermal fibroblasts replenish the pool of mature DFs decreasing with age and are responsible for the synthesis of components of the dermal extracellular matrix. Finally, the use of autological platelet-rich plasma (PRP) enables to maintenance of the achieved results by stimulating DF function. It has been shown that growth factors/cytokines contained in α-granules of platelets injected into the skin bind to the corresponding transmembrane receptors on the surface of DFs and stimulate their synthetic activity. Thus, the consecutive, step-by-step application of the described methods of regenerative medicine amplifies the effect on the molecular and cellular aging processes and thereby allows one to optimize and prolong the clinical results of skin rejuvenation.
Connection of Compound Extremes of Air Temperature and Precipitation with Atmospheric Circulation Patterns in Eastern Europe
Authors: Sukhonos Olga , Vyshkvarkova Elena
Published: May 2023

Recent studies show an increase in the frequency of compound extremes in air temperature and precipitation in many parts of the world, especially under dry and hot conditions. Compound extremes have a significant impact on all spheres of human activity, such as health, agriculture, and energy. Features of atmospheric circulation are closely related to the occurrence of anomalies in air temperature and precipitation. The article analyzes the relationship of atmospheric circulation modes with compound extremes that have had the greatest impact on the Atlantic–European region over the territory of Eastern Europe over the past 60 years on extreme air temperature and precipitation. Combinations of extreme temperature and humidity conditions (indices)—cold-dry (CD), cold-wet (CW), warm-dry (WD) and warm-wet (WW)—were used as compound extremes. Indices of compound extremes were calculated according to the E-OBS reanalysis data. Estimates of the relationship between two time series were carried out using standard correlation and composite analyses, as well as cross wavelet analysis. Phase relationships and time intervals for different climatic indices were different. The period of most fluctuations in the indices of compound extremes was from 4 to 12 years and was observed during 1970–2000. The coherent fluctuations in the time series of the WD and WW indices and the North Atlantic oscillation (NAO) index occurred rather in phase, those in the time series of the CD and WD indices and the Arctic oscillation (AO) index occurred in antiphase, and those in the time series of the WD and WW indices and the Scandinavia pattern (SCAND) index occurred in antiphase. Statistically significant increase in the number of warm compound extremes was found for the northern parts of the study region in the winter season with positive NAO and AO phases.
Impact of Dietary Sugars on β-Cell Function
Authors: Malta Ananda , Saavedra Lucas Paulo Jacinto , Raposo Scarlett Rodrigues , Lopes Gabriel Kian Guimarães , Fernandes Maryana Debossan , Barbosa Letícia Ferreira , Almeida Douglas Lopes , Mathias Paulo Cezar de Freitas
Published: May 2023

Regular consumption of dietary sugars can cause significant damage to the β-cells. Almost a century after the discovery of insulin, it has been suggested that the frequent consumption of certain carbohydrates can damage pancreatic β-cells, causing disturbances in the regulation of insulin secretion. Most noncommunicable diseases, such as diabetes, obesity, and hypertension have a common origin, metabolic dysfunction, which is partly due to β-cell malfunction. In this article, we believed that sugars can lead to an imbalance in cellular metabolism, causing insulin exocytosis to dangerously increase or decrease blood insulin concentrations. In this study, we describe the major mechanism of insulin secretion and discuss the effects of sugar on pancreatic β-cells. Although many environmental factors strongly influence β-cells, occidental diet, including excess sugar, has been found to be the predominant factor that kills or disrupts the functioning of the unique cells that produce, store, and secrete insulin.
Perception of Internet Use in Relation to Health Decision-Making among Nursing Students
Authors: Zafra-Agea José A. , Calvillo-Nuñez Noelia , Gil-Jiménez Òscar , Hellín-Pijuan Ivan
Published: May 2023

Internet use has increased worldwide during the COVID-19 pandemic, to the point where it has inadvertently integrated into our lives. University students use the Internet daily for different purposes: seeking information, entertaining, as a teaching and learning tool, they consider social networks as a means of connection and social interaction, and to seek information to make health decisions. Because of this, the Internet and social networks have gained popularity among this group, to the point of developing an abusive use that is not perceived as an addictive risk. A descriptive analysis was performed through the adaptation of a survey about Internet use, social networks and health perception; this survey was given to nursing students of the Gimbernat School during the academic year 2021–2022. Students completed the ad hoc questionnaire (N = 486; 83.5% female, 16.3% male; only 1 declared to be non-binary gender). Our hypothesis had to do with whether the population of nursing students at Gimbernat School had increased, after the pandemic, its use of the Internet and social networks to make decisions about health problems. The objective of the study was to analyse differences in students’ habits of use of the Internet and social networks as they look for health information, their decision-making when they find the information and their perception of health as nursing students from a gender perspective. The results showed a clear positive relationship between the variables studied. Of nursing students, 60.4% spend between 20 and more than 40 h a week using the Internet, and 43.6% of these hours are spent on social networks. Of students, 31.1% make health decisions by searching for information on the Internet and consider it useful and relevant. The use of the Internet and social media in relation to health decisions is clearly affected. To try to reduce the incidence of the problem, interventions are needed regarding the prevention and/or consequences of Internet abuse and health education of student nurses as future health assets.
Probiotics as Antibiotic Alternatives for Human and Animal Applications
Authors: Rabetafika Holy N. , Razafindralambo Aurélie , Ebenso Bassey , Razafindralambo Hary L.
Published: May 2023

Probiotics are live microorganisms recognized as natural candidates to substitute antibiotic substances, usually used to treat bacterial infections responsible for numerous human and animal diseases. Antibiotics are mostly prescribed for treating infections caused by bacteria. However, their excessive and inappropriate use has resulted in the increase of bacterial antimicrobial resistance (AMR) and host microbiota imbalance or dysbiosis phenomena. Even though antibiotics are the most well-known lifesaving substances, the AMR within the bacterial community has become a growing threat to global health, with the potential to cause millions of deaths each year in the future. Faced with these worldwide issues, it is high time to discover and develop antibiotic alternatives. There exists some evidence of probiotic roles in antagonizing pathogens, modulating immune systems, and maintaining general host health by restoring the gut microbiota balance. The multi-antimicrobial action mechanisms of such beneficial living microorganisms are one approach to practicing the “prevention is better than cure” concept to avoid antibiotics. The current review proposes a comprehensive description of antibiotic-related AMR issues and the potential of probiotics as antibiotic alternatives, while discussing pros and cons, as well as some evidence of beneficial uses of probiotics for human and animal health protection through recent results of experimental models and clinical trials.
Plant–Soil Interactions in Karst Regions
Authors: Zhang Hao , Zhang Wei
Published: May 2023

Karst regions have a shallow soil layer, discontinuous soil cover, high rock exposure rate, calcium-rich and alkaline soil, and a fertile but small total soil [...]
Genetic Diversity and Population Structure of Corylus yunnanensis (Franch.) A. Camus Using Microsatellite Markers in Sichuan Province
Authors: Wang Zeliang , Lin Yi , Gou Xiongcai , Du Jincheng , Wang Maolin
Published: May 2023

Corylus yunnanensis (Franch.) A. Camus is a deciduous shrub, native to the Hengduan Mountain of Qinghai–Tibetan Plateau, and is an economically and ecologically important woody crop species. In the present study, one hundred and fifty trees sampled from ten populations of C. yunnanensis in Sichuan Province were investigated to assess the population genetic variation using nine SSR markers. The results revealed that C. yunnanensis has an average value of 12.111 alleles, 3.376 effective alleles, an expected heterozygosity of 0.648, and an observed heterozygosity of 0.630, presenting a relatively high level of genetic diversity. The C. yunnanensis populations in Maoxian and Wenchuan of Aba Prefecture expressed the highest value of genetic diversity, whereas the Hanyuan and Muli populations showed the lowest. Moreover, the genetic differentiation of ten C. yunnanensis populations averaged to 0.106. Correspondingly, AMOVA revealed that 87% of the total variance was accounted for the variation within populations, and only 13% was among the populations. Both UPGMA and Bayesian STRUCTURE clustering suggested that the ten C. yunnanensis populations could fall into three clusters: the Aba Prefecture population, the Ya’an population, and the population of Ganzi and Liangshan Prefecture, indicating a significant geographic distribution, which was also confirmed by the Mantel test. Our study could provide a better understanding of population genetic diversity, and serve valuable information for the genetic improvement of C. yunnanensis.
Numerical Modelling Techniques for Stability Analysis of Slopes Reinforced with Shallow Roots
Authors: Dyson Ashley P. , Tolooiyan Ali , Griffiths D. V.
Published: May 2023

It is well recognised that plant vegetation and roots are capable of improving the shear strength of hillslopes by reinforcing soil shear resistance. Several key factors influencing the level of slope reinforcement include root geometry, orientation and strength. To assess the mechanical performance of vegetated slopes using numerical methods, root structures can be represented by beam and pile elements to mirror root behaviour. In contrast, root reinforcement can be modelled indirectly through a root cohesion factor, supplying additional strength to the soil surrounding the root zone. In this paper, correlations between these two numerical methods are presented, highlighting the applicability of each technique based on various root characteristics. Three types of root geometries are presented, consisting of a primary tap root, a secondary cohesion zone surrounding the main root and a root branching process. The results of the finite element analysis demonstrate the variation in the slope factor of safety for both methods, with a set of correlations between the two modelling approaches. A series of stability charts are presented for each method, quantifying the effects of root characteristics on slope reinforcement.
Use of Letermovir for CMV Prophylaxis after Allogeneic Hematopoietic Stem Cell Transplantation: Review of the Literature and Single-Center Real-Life Experience
Authors: Gill Jessica , Stella Davide , Dogliotti Irene , Dellacasa Chiara , Giaccone Luisa , Busca Alessandro
Published: May 2023

Cytomegalovirus (CMV) reactivation after allogeneic hematopoietic stem cell transplant (allo-HSCT) is mainly due to an increase of latent viremia in previously exposed patients. Furthermore, CMV reactivation in this setting has a significant impact on patient survival. Traditional approach to CMV reactivation post allo-HSCT was a pre-emptive treatment with antivirals in the case of increased viremia. However, since 2017, a new antiviral compound, letermovir, has been introduced in clinical practice and is deeply changing the common CMV approach. The toxicity profile of letermovir allowed its use in prophylaxes in patients at high risk of CMV reactivation. This review will focus on the present role of letermovir post allo-HSCT and discuss some possible future applications of the drug. Finally, our single center CMV management in view of the recent introduction of letermovir will be discussed.
Roman Marble Collections in the Earth Sciences Museum of the University of Bari (Italy): A Valuable Heritage to Support Provenance Studies
Authors: Fioretti Giovanna , Acquafredda Pasquale , Monno Alessandro , Montenegro Vincenza , Francescangeli Ruggero
Published: May 2023

The Earth Sciences Museum of the University of Bari (Italy) boasts the presence of a precious and complete nineteenth-century collection of white marbles and colored stones used by the Romans to embellish their buildings and, afterward, reuse in new buildings and artworks for their high symbolic and aesthetic value. This collection, arranged by Francesco and Filippo Belli, consists of 577 samples and a printed inventory and other documents, which allowed to reconstruct the history of the collection. Another collection of 29 marble samples was donated to the museum in 2010 by the Armenise family. Both collections represent a very useful reference tool in provenance studies for marble pieces at the archaeological and artistic sites and for samples of other collections. The systematic organization of these collections and their sharing among scholars, especially through the web network, is clearly essential. The work presented here focuses on the most recent discoveries about Belli’s collection, on the results of the identification of Armenise’s marbles and stones, and above all, on the actions undertaken in recent years in order to valorize this museum’s heritage. Specifically, both collections were reorganized following novel insights about lithotypes and the provenance of each sample, a detailed database including data on each sample was created, and a website reporting information and images of the two collections was built in order to guarantee the correct dissemination of data.
Household Flood Severity and Migration Extent in Central Java: Analysis of the Indonesian Family Life Survey
Authors: Langlois Breanne K. , Beaulac Leah , Berry Katherine , Anyanwu Oyedolapo , Simpson Ryan B. , Ismanto Aris , Koch Magaly , Coughlan de Perez Erin , Griffin Timothy , Naumova Elena N.
Published: May 2023

Central Java, Indonesia, is prone to river and coastal flooding due to climate changes and geological factors. Migration is one possible adaptation to flooding, but research is limited due to lack of longitudinal spatially granular datasets on migration and metrics to identify flood-affected households. The available literature indicates social and economic barriers may limit mobility from flood prone areas. The Indonesian Family Life Survey (IFLS) provides self-reported data on household experiences with natural disasters among 1501 Central Java households followed over two waves (2007 and 2014). We examined how the severity of flooding, defined by household-level impacts captured by the IFLS (death, injury, financial loss, or relocation of a household member), influenced the extent of household movement in Central Java using a generalized ordered logit/partial proportional odds model. Households severely impacted by floods had 75% lower odds of moving farther away compared to those that did not experience floods. The most severely impacted households may be staying within flood-affected areas in Central Java. Public health, nutrition, and economic surveys should include modules focused on household experiences, impacts, and adaptations to facilitate the study of how climate changes are impacting these outcomes.
Bacterial Lysate from the Multi-Strain Probiotic SLAB51 Triggers Adaptative Responses to Hypoxia in Human Caco-2 Intestinal Epithelial Cells under Normoxic Conditions and Attenuates LPS-Induced Inflammatory Response
Authors: Lombardi Francesca , Augello Francesca Rosaria , Palumbo Paola , Bonfili Laura , Artone Serena , Altamura Serena , Sheldon Jenna Marie , Latella Giovanni , Cifone Maria Grazia , Eleuteri Anna Maria , Cinque Benedetta
Published: May 2023

Hypoxia-inducible factor-1α (HIF-1α), a central player in maintaining gut-microbiota homeostasis, plays a pivotal role in inducing adaptive mechanisms to hypoxia and is negatively regulated by prolyl hydroxylase 2 (PHD2). HIF-1α is stabilized through PI3K/AKT signaling regardless of oxygen levels. Considering the crucial role of the HIF pathway in intestinal mucosal physiology and its relationships with gut microbiota, this study aimed to evaluate the ability of the lysate from the multi-strain probiotic formulation SLAB51 to affect the HIF pathway in a model of in vitro human intestinal epithelium (intestinal epithelial cells, IECs) and to protect from lipopolysaccharide (LPS) challenge. The exposure of IECs to SLAB51 lysate under normoxic conditions led to a dose-dependent increase in HIF-1α protein levels, which was associated with higher glycolytic metabolism and L-lactate production. Probiotic lysate significantly reduced PHD2 levels and HIF-1α hydroxylation, thus leading to HIF-1α stabilization. The ability of SLAB51 lysate to increase HIF-1α levels was also associated with the activation of the PI3K/AKT pathway and with the inhibition of NF-κB, nitric oxide synthase 2 (NOS2), and IL-1β increase elicited by LPS treatment. Our results suggest that the probiotic treatment, by stabilizing HIF-1α, can protect from an LPS-induced inflammatory response through a mechanism involving PI3K/AKT signaling.
Left Bundle Branch Area Pacing over His Bundle Pacing: How Far Have We Come?
Authors: Baroni Matteo , Preda Alberto , Varrenti Marisa , Vargiu Sara , Carbonaro Marco , Giordano Federica , Gigli Lorenzo , Mazzone Patrizio
Published: May 2023

Implantable cardiac pacemakers have greatly evolved during the few past years, focusing on newer modalities of physiologic cardiac pacing [...]
Angiosarcoma of the Breast: Overview of Current Data and Multimodal Imaging Findings
Authors: Conti Marco , Morciano Francesca , Rossati Claudia , Gori Elisabetta , Belli Paolo , Fornasa Francesca , Romanucci Giovanna , Rella Rossella
Published: May 2023

Angiosarcoma of the breast is a rare breast cancer, which can arise de novo (primary breast angiosarcoma, PBA) or as a secondary malignancy (secondary breast angiosarcoma, SBA) as a result of a biological insult. In the latter case, it is usually diagnosed in patients with a previous history of radiation therapy following a conserving treatment for breast cancer. Over the years, the advances in early diagnosis and treatment of breast cancer, with increasing use of breast-conserving surgery and radiation therapy (instead of radical mastectomy), brought about an increased incidence of the secondary type. PBA and SBA have different clinical presentations and often represent a diagnostic challenge due to the nonspecific imaging findings. The purpose of this paper is to review and describe the radiological features of breast angiosarcoma, both in conventional and advanced imaging to guide radiologists in the diagnosis and management of this rare tumor.
Overview of Underwater 3D Reconstruction Technology Based on Optical Images
Authors: Hu Kai , Wang Tianyan , Shen Chaowen , Weng Chenghang , Zhou Fenghua , Xia Min , Weng Liguo
Published: May 2023

At present, 3D reconstruction technology is being gradually applied to underwater scenes and has become a hot research direction that is vital to human ocean exploration and development. Due to the rapid development of computer vision in recent years, optical image 3D reconstruction has become the mainstream method. Therefore, this paper focuses on optical image 3D reconstruction methods in the underwater environment. However, due to the wide application of sonar in underwater 3D reconstruction, this paper also introduces and summarizes the underwater 3D reconstruction based on acoustic image and optical–acoustic image fusion methods. First, this paper uses the Citespace software to visually analyze the existing literature of underwater images and intuitively analyze the hotspots and key research directions in this field. Second, the particularity of underwater environments compared with conventional systems is introduced. Two scientific problems are emphasized by engineering problems encountered in optical image reconstruction: underwater image degradation and the calibration of underwater cameras. Then, in the main part of this paper, we focus on the underwater 3D reconstruction methods based on optical images, acoustic images and optical–acoustic image fusion, reviewing the literature and classifying the existing solutions. Finally, potential advancements in this field in the future are considered.
The Influence of the Shaft on the Uplift Capacity of Single-Plate Helical Pile in Clay
Authors: Wang Le , Chen Hongzhen , Tian Yinghui
Published: May 2023

Helical piles with small sizes are widely used in traditional civil engineering infrastructure application, especially in onshore electrical power industry. The floating offshore wind power industry has taken an interest in helical piles because of their rapid installation and ability to support immediate loading. Compared with onshore structures, wind power structures suffer larger external load and it becomes necessary to increase the overall size of helical piles, leading to considerable load capacity provided by the shaft, which is typically neglected for a light structure. In this paper, the undrained uplift capacity of helical piles was studied using finite-element limit analysis. The analysis explored various diameter ratios of the shaft to the plate and embedment depths, as well as different interface conditions. The local bearing capacity on the plate was also explored for attached and vented interface conditions. The failure mechanisms of a helical pile were presented to explain the mutual influence between plate anchor and shaft on the uplift capacity. Algebraic expressions for the uplift capacity of a helical pile were proposed. Engineers may use these expressions to improve the accuracy of their estimates for the uplift capacity of helical piles.
Programmed Cell Death in Sea Urchins: A Review
Authors: Di Tuccio Viviana , De Luca Pasquale , Romano Giovanna
Published: May 2023

The sea urchin embryo is a widespread model system useful to study fundamental biological processes, but also for the identification of molecular and cellular mechanisms activated in response to external stress factors. Programmed cell death (PCD) is a molecular mechanism regulated at the genomic level and conserved during evolution, playing a central role in the rearrangement and shaping of tissues in developing embryos, especially during metamorphosis, also activated in response to damages induced by abiotic stress. Currently, different types of PCD have been described, among which apoptosis and autophagy are the most conserved processes among metazoans. These processes can be activated as alternative or combined defense strategies in embryos exposed to different types of stress when repairing mechanisms (activation of Heath Shock Proteins and Metallothioneins, DNA repair), fail to rescue cell viability. In this review, we report on the available information concerning the possible involvement of PCD processes in sea urchin embryos following exposure to pollutants, including heavy metals, physical factors and toxic natural compounds. We also report information about the occurrence of physiological apoptosis during development.
Seasonal and Long-Term Phytoplankton Dynamics in the Middle Caspian According to Satellite Data and In Situ Observations in the First Decades of the 21st Century
Authors: Vostokov Sergey V. , Pautova Larisa A. , Sahling Inna V. , Vostokova Anastasia S. , Gadzhiev Alimurad A. , Petherbridge Guy , Lobachev Evgeny N. , Abtahi Behrooz , Shojaei Mehdi Ghodrati
Published: May 2023

Seasonal and long-term variability of phytoplankton in the Middle Caspian was studied based on remote sensing data of the sea by SeaWiFS and MODIS-Aqua scanners in 1998–2021 and the results of field observations in 2004–2021. The seasonal variability of chlorophyll “a” (CHL) calculated from satellite data using a regional algorithm indicated that the autumn and winter seasons were the main phytoplankton production periods of the year. In summer, a period of stagnation was observed in phytoplankton growth in the surface layer. However, according to satellite data in the first months of each year, winter blooms were observed recurrently in the Middle Caspian Sea, as confirmed by the results of field observations in 2004–2021. The phytoplankton biomass during the winter vegetation period reached 4.5–5.0 g/m3. In the first decade of the century (2004–2006), winter blooms were almost entirely (as much as 96%) formed through the mass growth of the alien diatom Cerataulina pelagica. In the modern period (2021), the winter bloom was formed both by three endemic diatom species Thalassionema nitzschioides, Cyclotella comta and Dactyliosolen fragilissimus and by two alien species Pseudo-nitzschia seriata and Cerataulina pelagica. In spring, the diatom Cyclotella caspia and the dinoflagellate Prorocentrum micans, both endemics, dominated. In summer, the phytoplankton biomass was composed of the mass growth of small flagellates and dinoflagellates in the seasonal thermocline layer, which current remote sensing methods cannot record. The diatoms’ contribution to the community’s total biomass in summer did not exceed 3%. In the autumn phytoplankton, the main role was played by a diatom component represented by alien species, mainly Chaetoceros peruvianus.
Echoes of the 2013–2015 Marine Heat Wave in the Eastern Bering Sea and Consequent Biological Responses
Authors: Belkin Igor M. , Short Jeffrey W.
Published: May 2023

We reviewed various physical and biological manifestations of an unprecedented large-scale water temperature anomaly that emerged in the Northeast Pacific in late 2013. The anomaly dubbed “The Blob” persisted through 2014–2016, with some signs of its persistence through 2017–2018 and a possible reemergence in 2019. The tentative timeline of The Blob’s successive appearances around the Northeast Pacific is suggestive of its advection by currents around the Gulf of Alaska, along the Aleutians, into the Bering Sea, and eventually to the Bering Strait. During the initial phase of The Blob’s development in 2013–2014, advection along the Polar Front might have played a certain role. The extreme persistence and magnitude of The Blob resulted in numerous and sometimes dramatic ecosystem responses in the eastern Bering Sea. The multi-year duration of The Blob might have preconditioned the Bering Sea for the record low seasonal sea ice extent during the winter of 2017–2018 and the disappearance of the cold pool in 2016 and 2018 that profoundly affected zooplankton, invertebrates, fishes, seabirds, and marine mammals. A comparison of the time series of population responses across trophic levels suggests that The Blob lowered primary production during spring, increased production of small copepods and jellyfish, and reduced the efficiency of energy transfer to higher trophic levels. While the Bering Sea’s water temperature, seasonal sea ice, and cold pool seem to return to the long-term mean state in 2022, it remains to be seen if the Bering Sea ecosystem will completely recover. The two most likely alternative scenarios envision either irreversible changes or hysteresis recovery.
A New Method of Ship Type Identification Based on Underwater Radiated Noise Signals
Authors: Chen Shanshan , Guan Sheng , Wang Hui , Ye Ningqi , Wei Zexun
Published: May 2023

Ship type identification is an important basis for ship management and monitoring. The paper proposed a new method of ship type identification by combining characteristic parameters from the energy difference between high and low frequencies and the sensitive IMF variance mean value based on the modal decomposition of the underwater radiated noise signals using the Ensemble Empirical Mode Decomposition (EEMD) method. The comparison shows that the characteristic parameters of different types of ship, underwater radiated noises are different, whereas those of the same types of ship, underwater radiated noises fall in close range. Validation experiments based on randomly selected ship underwater radiated noise samples manifest that the method is of good separability for the four types of ship underwater radiated noises in the Deepship dataset. It has a higher identification rate than other methods within the distance range of ship underwater radiated noise detection in the dataset. The accuracy of this method tends to decrease with distance in the classification experiments of the ship underwater radiated noises at different distances.
An Assessment of Marine Heatwaves in a Global Eddy-Resolving Ocean Forecast System: A Case Study around China
Authors: Li Yiwen , Liu Juan , Lin Pengfei , Liu Hailong , Yu Zipeng , Zheng Weipeng , Chen Jinlei
Published: May 2023

Marine heatwaves (MHWs) are becoming increasingly frequent and intense around China, impacting marine ecosystems and coastal communities. Accurate forecasting of MHWs is crucial for their management and mitigation. In this study, we assess the forecasting ability of the global eddy-resolving ocean forecast system LICOM Forecast System (LFS) for the MHW events in October 2021 around China. Our results show that the 1-day lead forecast by the LFS accounts for up to 79% of the observed MHWs, with the highest skill during the initial and decay periods. The forecasted duration and intensity of the MHW event are consistent with observations but with some deviations in specific regions of the Yellow and South China seas. A detailed analysis of the heat budget reveals that the forecasted shortwave radiation flux is a key factor in the accuracy of the forecasted MHW duration and intensity. The oceanic dynamic term also greatly contributes to the accuracy in the southern Yellow Sea. In addition, the increasing bias of the forecasted duration and intensity with lead time are mainly caused by the underestimated shortwave radiation. Our findings suggest that improving the accuracy of oceanic dynamic processes and surface radiation fluxes in the LFS could be a promising direction to enhance the forecasting ability of marine extreme events such as MHWs.
Effects of Kuroshio and Mesoscale Eddy on Fishing Ground Gravity of Neon Flying Squid Ommastrephes bartramii in Northwest Pacific Ocean
Authors: Li Jiasheng , Cui Xuesen , Tang Fenghua , Fan Wei , Han Zhen , Wu Zuli
Published: May 2023

Understanding the spatial patterns of neon flying squid is important for the monitoring and management of fishery resources. Mesoscale eddies and the Kuroshio Extension play important roles in the variation of the fishing ground of Ommastrephes bartramii. However, the way in which eddies and the Kuroshio influence the distribution of Ommastrephes bartramii requires further understanding. In this study, the spatial variation in the distribution of fishing activity and the change of fishing ground gravity of squid were analyzed using automatic identification system (AIS) data. There is a positive correlation between the fishing ground gravity in latitudinal direction and Kuroshio Extension indicators based on the high-frequency eddy kinetic energy (EKE), which describes the Kuroshio variations. Furthermore, the Kuroshio Extension indicators show a positive relationship with the number of the eddies generated in the fishing ground. The results suggest that the changes in the dynamics of SST anomalies could be influenced by eddy-shedding processes in the upstream KE and then alter the distribution of the fishing ground for Ommastrephes bartramii. The Kuroshio index (mean high-frequency eddy kinetic energy between 32° and 37° N, 142° and 149° E) can be used as a good indicator of Kuroshio extension variations to investigate the squid fishing ground in the Kuroshio–Oyashio transition area.
Distribution Characteristics of Wind Speed Relative Volatility and Its Influence on Output Power
Authors: Qin Shigang , Liu Deshun
Published: May 2023

The stochastic fluctuations of wind speed and wind power curve modeling are complex tasks due to fluctuations in the difference between actual and theoretical power output, leading to a reduction in the accuracy of wind-power curve models. To address this issue, this paper proposes a normal distribution-modeling method based on relative volatility, which extracts the wind-speed variation patterns from the onsite SCADA (Supervisory Control And Data Acquisition) data, analyzes the correlation between wind-speed relative volatility and power relative volatility, and establishes a wind-power volatility-curve model to provide a basis for evaluating the efficiency of wind turbines. First, the definitions of relative volatility and probability vectors are provided, and a probability vector volatility-assessment function is designed to calculate the volatility-assessment index of the probability vector. Then, the relative volatility and probability vectors of wind speed are modeled, and features extracted from the onsite SCADA data, and characteristic parameters such as mean, standard deviation, and confidence interval of wind-speed relative volatility are statistically analyzed, as well as the wide-window coefficient, volatility-assessment index, attribute features (volatility center and volatility boundary), normal distribution features (mean and standard deviation) of the probability vectors of wind-speed relative volatility with different periods. The visualization descriptions of six typical probability vector distributions show that there is a correlation between the volatility assessment index of the probability vector based on relative volatility and the standard deviation of its distribution. Finally, the correlation between wind-speed relative volatility and power relative volatility is analyzed: in the maximum wind-energy tracking area, the derivative of power is linearly related to the derivative of wind speed, while in the constant power area, the derivative of the wind-energy utilization coefficient is linearly related to the derivative of wind speed. The conclusions obtained in this paper will provide a method reference for data processing to mine the parameter variation patterns and interrelationships of wind farm SCADA data and provide a basis for evaluating the power generation efficiency of wind turbines.
The Anthropocene in the Aspiring UNESCO Global Geopark Schelde Delta Area: Geological History, Human Resilience and Future Landscape Management
Authors: Kluiving Sjoerd , Waterman Ronald
Published: May 2023

In north-western Europe, the Rhine, Meuse and Scheldt rivers have created a large river delta over the past 3 million years. Geological phenomena in the Scheldt region in north-western Belgium and in the southern Netherlands testify from a highly dynamic landscape, showing a range from very old (50 MY) to very young (recent) geological processes. The great diversity in geological processes and resulting landscapes is unprecedented on a global scale and has had its impact on the region’s cultural and economic history, shaping today’s reality in the global polycrisis. However, the area is usually observed by people as a flat and featureless type of terrain, although sometimes, unexpected elevation differences and sharp contrasts in landscapes occur alternating with omnipresent waterways. Therefore, here, the seven most conspicuous landforms are reviewed and presented in conjunction with the geological history of the area, including the typical lowland theme of the human battle against water. This study aims to (a) reconstruct the Tertiary and Quaternary to Holocene Dutch–Flemish Schelde Delta history, (b) review a cultural history that evolves into the present of the Anthropocene, and (c) project the desired future for sustainable landscapes in the aspiring UNESCO Global Geopark Schelde Delta between plural landscape management scenarios of Revitalised Land- and Waterscape and Improved Biodiversity.
Resource Flows, Uses and Populations Territorial Attachments: The Case of the Oyapock Watershed (French Guiana, Amapá State of Brazil)
Authors: Saqalli Mehdi , Cifuentes Cristian Rojas , Maire Eric , Alves Mariana Janaína dos Santos , Santo Rafael Costa , Kaced Doryan , Gaudou Benoît , Fiamor Anne-Emmanuelle
Published: May 2023

This article presents a stakeholders’ mapping exercise in 2017 and 2018 in the Oyapock watershed. Ninety-two maps were obtained covering almost the entire watershed. Results show that roads are becoming a more significant spatial reference to people, apart from the population minority living along the river. This latter polarizes itself into Brazilian colonization down and midstream, legal farmers on the Brazilian side, illegal gold diggers on the French Guiana side, and an Amerindian demographic growth upstream, both at the expense of the historical Saramaka/Creole area. Recent roads sticking each bank of the Oyapock River to their hinterland, Brazil, and France, respectively, like rubber bands, are separating them slowly, despite the bridge, primarily useless for now.
The Historical Aspect of the Impact of Zn and Pb Ore Mining and Land Use on Ecohydrological Changes in the Area of the Biała Przemsza Valley (Southern Poland)
Authors: Różkowski Kazimierz , Różkowski Jacek , Rahmonov Oimahmad
Published: May 2023

The article presents the impact of Zn and Pb ore mining and land use on ecohydrological changes in the area of the Biała Przemsza valley in the historical aspect, with particular emphasis on the period 1941–2021. GIS was used to analyse the maps to identify spatial and temporal changes in land use. The following trends could be observed in the spatial development of the Biała Przemsza valley: rapid urbanisation and industrialisation in the 21st century, marked reduction in the surface area of arable land and sands, and dynamics of the increase in the surface area occupied by forests. Notable changes occurred in the plant ecosystems between 1941 and 2021 due to land management. Groundwater level lowering due to mining activity resulted in the change from wet meadows to fresh or dry xerothermic grasslands, while forest cover increased by 4% within the catchment area. The hydrographic network evolved. After the commissioning of the Zn-Pb ore mines Olkusz and Pomorzany in the 1960s and 1970s, a regional depression cone with an area of 400 km2 was formed, while the maximum groundwater inflows to the mines reached 360 m3/min. Changes in the hydrodynamic conditions have resulted in changes in the hydrogeochemical regime of the Triassic aquifer manifested by increased levels of, e.g., SO4 and Cl. Wastewater with lignosulphonate compounds from the paper factory caused periodic degradation of some of the water flowing into the Pomorzany mine. As a result of mining activity, the character of some sections of the Biała Przemsza river changed to an infiltrating one, the quantitative depletion of groundwater resources within the range of the mine drainage cone occurred, river springs disappeared, and the flow in the river decreased. At the same time, mine water was discharged to the tributaries of the Biała Przemsza. A radical reduction in the flow of the Biała Przemsza and its tributaries occurred after the decommissioning of the Zn-Pb ore mines at the turn of 2021 and 2022.
The Changes of Desertification and Its Driving Factors in the Gonghe Basin of North China over the Past 10 Years
Authors: Jia Hong , Wang Rui , Li Hang , Diao Baijian , Zheng Hao , Guo Lanlan , Liu Lianyou , Liu Jifu
Published: May 2023

Desertification is one of the most severe environmental and socioeconomic issues facing the world today. Gonghe Basin is located in the monsoon marginal zone of China, is a sensitive area of climate change in the northeastern of the Qinghai-Tibet Plateau in China, desertification issue has become very severe. Remote sensing monitoring provides an effective technical means for desertification control. In this study, we used Landsat images in 2010 and 2020 to extract desertification information to constructed the Albedo-NDVI feature space in the Gonghe Basin. And then analyzed temporal and spatial evolution of desertification and its driving factors using Geodetector in the Gonghe Basin from 2010 to 2020. The main conclusions are as follows: (1) Albedo-NDVI feature space method can accurately classify desertification information with accuracy of more than 90%, which was benefit to quantitative analysis of desertification. (2) The desertification situation in the Gonghe Basin had improved from 2010 to 2020, especially in the west of the basin, desertification land area decreased by 827.46 km2, and desertification intensity had been obviously reversed. (3) The changes of the desertification in the Gonghe Basin from 2010 to 2020 was affected by both natural and human factors, and the influence of human activities on desertification reversal had increased gradually. The results indicate that the desertification status in the Gonghe Basin had been effectively controlled, and can provide useful basis for the desertification combat in the Gonghe Basin.
To Share or Not to Share: A Framework for Understanding Coworker Collaborative Consumption
Authors: Touma Charles , Bhappu Anita D.
Published: May 2023

We extend prior research by empirically demonstrating employees’ attitude–behavior gap when sharing goods and services with coworkers using platform technology. We also integrate theories on psychological ownership and territoriality in organizations with the theory of planned behavior and the technology acceptance model to develop an individual-level framework for understanding employees’ adoption of organization-sponsored sharing platforms, or lack thereof. Specifically, our abductive analysis of interview data from a field study illustrates how psychological ownership attitudes, sustainable consumption norms, and technology usability perceptions influence employees’ sharing motivations and intentions. Our findings and framework provide organizations with a roadmap for increasing employee engagement and corporate social responsibility through coworker collaborative consumption. Managers should promote sustainable consumption in their organization and strengthen related employee norms to facilitate the sharing of goods and services among coworkers, which helps build community at work. Managers should also ensure that the chosen organizational-sponsored sharing platforms are easy to use so that employees perceive this technology as useful and feel confident using it. The implementation of these strategies should enable organizations to successfully extend the sharing economy to the workplace. Future research could also leverage our contextualized construct definitions to develop survey measures for quantitatively testing and refining our framework.
Proof-of-Concept Vacuum Microelectronic NOR Gate Fabricated Using Microelectromechanical Systems and Carbon Nanotube Field Emitters
Authors: von Windheim Tasso , Gilchrist Kristin H. , Parker Charles B. , Hall Stephen , Carlson James B. , Stokes David , Baldasaro Nicholas G. , Hess Charles T. , Scheick Leif , Rax Bernard , Stoner Brian , Glass Jeffrey T. , Amsden Jason J.
Published: May 2023

This paper demonstrates a fully integrated vacuum microelectronic NOR logic gate fabricated using microfabricated polysilicon panels oriented perpendicular to the device substrate with integrated carbon nanotube (CNT) field emission cathodes. The vacuum microelectronic NOR logic gate consists of two parallel vacuum tetrodes fabricated using the polysilicon Multi-User MEMS Processes (polyMUMPs). Each tetrode of the vacuum microelectronic NOR gate demonstrated transistor-like performance but with a low transconductance of 7.6 × 10−9 S as current saturation was not achieved due to a coupling effect between the anode voltage and cathode current. With both tetrodes working in parallel, the NOR logic capabilities were demonstrated. However, the device exhibited asymmetric performance due to differences in the CNT emitter performance in each tetrode. Because vacuum microelectronic devices are attractive for use in high radiation environments, to test the radiation survivability of this device platform, we demonstrated the function of a simplified diode device structure during exposure to gamma radiation at a rate of 45.6 rad(Si)/second. These devices represent a proof-of-concept for a platform that can be used to build intricate vacuum microelectronic logic devices for use in high-radiation environments.