bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of a Psychosocial Approach to the Identification and Strengthening of Adaptation Mechanisms of Humans and a Small Social Group during the Isolation Experiment “SIRIUS 2017–2023”
Authors: Bernardova Sykorova Katerina
Published: August 2023

TOPIC: The task of the 21st century is the implementation of manned flights in Earth’s orbit with the view to building orbital and planetary bases. This requires addressing the impacts on people and small social groups in terms of psychological, psychosocial, physiological and health. The author presents her own comprehensive research and intervention approach to exploring and supporting the operation of the space crew in the four-month isolation period of “SIRIUS-18/19”, which can be used in the future for manned flights into deep space. GOAL: The main goal is to present three main areas, within the implementation of social research, designed to analyze the operation of the crew in a simulated space flight: 1. WORKING CONDITIONS, WORKING ENVIRONMENT AND SOCIAL ATMOSPHERE; 2. the STRUCTURE AND DYNAMICS OF RELATIONSHIPS and TIES; 3. a set of other specific areas. The key outputs of the comprehensive analysis of the “SIRIUS-19” crew operations concerning the level of satisfaction with the working environment and conditions, the structure and dynamics of relationships and other specific areas are presented. The suitability of the implementation of intervention activities for isolated crews is pointed out. The purpose is to contribute to the preparation of human crews for manned flights in deep space and to reduce the risks of damage to human biopsychosocial health. METHODS: For a comprehensive analysis, a set of the author’s own questionnaire methods, verified over 25 years in the normal and extremely demanding conditions of specific professions, was used. The diagnostic and intervention method sociomapping, based on fuzzy theory and the mathematical modeling of outputs, was used for the analysis of the structure and dynamics of relationships as it is a technique suitable for the analysis of nonlinear dynamical systems. The methodology enabled the author to obtain a comprehensive view of the experimental situation from a psychosocial and sociological point of view. RESULTS: The model of the author’s analytical approach confirmed the legitimacy of its implementation in the case of isolation experiments. A comprehensive analysis of the “SIRIUS-18/19” crew’s work environment yielded outputs from the 10 main and 48 sub-areas analyzed. The analysis of the six-member, gender-mixed, multicultural crew in the area of structure and dynamics of relationships focused on 35 areas; a total of 344 sociomaps were created. The files were analyzed qualitatively and quantitatively using control diagrams. CONCLUSIONS: Outputs have the potential to be used in other isolation experiments as sociotechnical measures for project organizers and as verification of the need to introduce work with the crew in the form of development workshops using the sociomapping method.
The Influence of Patient Sex on Outcomes Following One-Stage and Two-Stage Revision for Periprosthetic Joint Infection in Total Joint Arthroplasty
Authors: Metcalf Rory W. , Rowe Taylor , Tersteeg Megan , Dombrowski Malcolm E. , Odum Susan , Otero Jesse E.
Published: August 2023

Although females have a higher rate of primary total joint arthroplasty (TJA), males have a higher rate of revision. The literature lacks studies examining the relationship between sex and outcomes following single and two-stage exchange for periprosthetic joint infection (PJI). The purpose of this study was to examine if differences exist in outcomes following revision for chronic PJI between sexes. A retrospective review was performed on all patients with an MSIS confirmed PJI who underwent a single or two-stage exchange at our institution from January 2010 to January 2021. Patient demographics, comorbidity characteristics, and outcomes were collected and compared between males and females. The primary outcome variable was disease-free survival at 1 year following definitive revision. Multivariable logistic regression analysis was performed to determine risk factors for failure. Of the 470 patients meeting final eligibility criteria, 250 were male and 226 were female (2 males and 4 females had a joint infection of either the contralateral side or a different joint and were treated as separate records). Of the patients in the cohort, 80% of the males (200/250) and 80% of the females (181/226) were found to be disease-free at 1-year follow-up (p > 0.99). Multivariable logistic regression analysis showed that nicotine use and diabetes, but not sex, were significant predictors of failure. Our study did not find a relationship between sex and outcome of revision for PJI. Further research is required to determine whether differences exist between males and females in the expression of PJI and outcomes following treatment.
Cocoa Shell Extract Reduces Blood Pressure in Aged Hypertensive Rats via the Cardiovascular Upregulation of Endothelial Nitric Oxide Synthase and Nuclear Factor (Erythroid-Derived 2)-like 2 Protein Expression
Authors: Ruvira Santiago , Rodríguez-Rodríguez Pilar , Ramiro-Cortijo David , Martín-Trueba María , Martín-Cabrejas María A. , Arribas Silvia M.
Published: August 2023

Cocoa shell is a by-product of cocoa manufacturing. We obtained an aqueous extract (CSE) rich in polyphenols and methylxanthines with antioxidant and vasodilatory properties. We aimed to evaluate the effects of CSE supplementation in aged hypertensive rats on blood pressure and the mechanism implicated. Eighteen-month-old male and female rats exposed to undernutrition during the fetal period who developed hypertension, with a milder form in females, were used (MUN rats). Systolic blood pressure (SBP; tail-cuff plethysmography) and a blood sample were obtained before (basal) and after CSE supplementation (250 mg/kg; 2 weeks, 5 days/week). Plasma SOD, catalase activity, GSH, carbonyls, and lipid peroxidation were assessed (spectrophotometry). In hearts and aortas from supplemented and non-supplemented age-matched rats, we evaluated the protein expression of SOD-2, catalase, HO-1, UCP-2, total and phosphorylated Nrf2 and e-NOS (Western blot), and aorta media thickness (confocal microscopy). MUN males had higher SBP compared with females, which was reduced via CSE supplementation with a significant difference for group, sex, and interaction effect. After supplementation with plasma, GSH, but not catalase or SOD, was elevated in males and females. Compared with non-supplemented rats, CSE-supplemented males and females exhibited increased aorta e-NOS and Nrf2 protein expression and cardiac phosphorylated-Nrf2, without changes in SOD-2, catalase, HO-1, or UCP-2 in cardiovascular tissues or aorta remodeling. In conclusion, CSE supplementation induces antihypertensive actions related to the upregulation of e-NOS and Nrf2 expression and GSH elevation and a possible direct antioxidant effect of CSE bioactive components. Two weeks of supplementation may be insufficient to increase antioxidant enzyme expression.
Germanium–Cobalt–Indium Nanostructures as Anodes of Lithium-Ion Batteries for Room- and Low-Temperature Performance
Authors: Gavrilov Sergey A. , Gavrilin Ilya M. , Martynova Irina K. , Kulova Tatiana L. , Kovtushenko Evgeniya V. , Skundin Alexander M. , Poliakov Maksim V. , Volkova Lidiya S. , Novikova Svetlana A.
Published: August 2023

Germanium–cobalt–indium nanostructures were synthesized via cathodic electrodeposition from aqueous complex solutions of Ge (IV) and Co (II) with drop-like indium crystallization centers. This approach features simplicity, avoids heating and allows using cheaper GeO2 instead of pure Ge as starting material. Further, in this case, target nanostructures grow directly upon the substrate. Various analytical methods (scanning electron microscopy, transmission electron microscope and X-ray diffraction) were used for characterization of the nanostructures under study. The samples obtained consist of an array of globular particles of 200 to 800 nm, with nanowires in between. The globules, in turn, contain primary particles of 5 to 10 nm consisting of cobalt, germanium and oxygen. Nanowires consist of germanium and indium. The electrochemical properties of the above-mentioned nanostructures were assessed with cyclic voltammetry and galvanostatic cycling. The germanium–cobalt–indium nanostructures are characterized by a high specific capacity upon lithium insertion, which is approximately 1350 mAh/g at C/8, and a high Coulomb cycling efficiency in the first cycle (approximately 0.76). Germanium–cobalt–indium nanostructures show the ability to operate at high rates up to 16 C at a wide temperature range from +20 to −35 °C.
Research on Mental Workload of Deep-Sea Oceanauts Driving Operation Tasks from EEG Data
Authors: Liu Xiaoguang , Shi Lu , Ye Cong , Li Yangyang , Wang Jing
Published: August 2023

A person’s present mental state is closely associated with the frequency and temporal domain features of spontaneous electroencephalogram (EEG) impulses, which directly reflect neurophysiological signals of brain activity. EEG signals are employed in this study to measure the mental workload of drivers while they are operating a vehicle. A technique based on the quantum genetic algorithm (QGA) is suggested for improving the kernel function parameters of the multi-class support vector machine (MSVM). The performance of the algorithm based on the quantum genetic algorithm is found to be superior to that of other ways when other methods and the quantum genetic algorithm are evaluated for the parameter optimization of kernel function via simulation. A multi-classification support vector machine based on the quantum genetic algorithm (QGA-MSVM) is applied to identify the mental workload of oceanauts through the collection and feature extraction of EEG signals during driving simulation operation experiments in a sea basin area, a seamount area, and a hydrothermal area. Even with a limited data set, QGA-MSVM is able to accurately identify the cognitive burden experienced by ocean sailors, with an overall accuracy of 91.8%.
Is There a Relationship between Adverse Pregnancy Outcomes and Future Development of Atherosclerosis?
Authors: Poznyak Anastasia V. , Khotina Victoria A. , Zhigmitova Elena B. , Sukhorukov Vasily N. , Postnov Anton Y. , Orekhov Alexander N.
Published: August 2023

Cardiovascular disease is one of the main death causes globally. Effective cardiovascular risk management requires a thorough understanding of the mechanisms underlying the disorder. Establishing early markers of the disease allows a timely intervention and prevention of further atherosclerosis development. Multiple studies confirm the correlation between pregnancy disorders and cardiovascular disease in the postpartum period. Moreover, over 30% of women experience adverse pregnancy outcomes. Thus, the examination of the links between these conditions and atherosclerotic cardiovascular disease may help to identify gender-specific risk factors. In this review, we will explore the association between several adverse pregnancy outcome conditions and atherosclerosis. The current analysis is based on the data from several recent studies on the mechanisms behind gestational diabetes, hypertensive disorders of pregnancy, miscarriages, and stillbirths and their implications for the female cardiovascular system.
The Multi-Kinase Inhibitor RepSox Enforces Barrier Function in the Face of Both VEGF and Cytokines
Authors: Lietuvninkas Lina , Baccouche Basma , Kazlauskas Andrius
Published: August 2023

The therapeutic benefit provided by anti-vascular endothelial growth factor (VEGF) for patients with vision-threatening conditions such as diabetic retinopathy (DR) demonstrates the important role of VEGF in this affliction. Cytokines, which can be elevated in the vitreous of patients with DR, promote leakage of retinal blood vessels, and may also contribute to pathology, especially in those patients for whom anti-VEGF does not provide adequate benefit. In this in vitro study using primary human retinal endothelial cells, we compared anti-VEGF with the (transforming growth factor beta) TGFβ receptor inhibitor RepSox (RS) for their ability to enforce barrier function in the face of VEGF, cytokines, and the combination of both. RS was superior to anti-VEGF because it prevented permeability in response to VEGF, cytokines, and their combination, whereas anti-VEGF was effective against VEGF alone. The inhibitory effect of RS was associated with suppression of both agonist-induced pore formation and disorganization of adherens junctions. RS-mediated inhibition of the TGFβ pathway and increased expression of claudin-5 did not adequately explain how RS stabilized the endothelial cell barrier. Finally, RS not only prevented barrier relaxation, but also completely or partially reclosed a barrier relaxed with tumor necrosis factor α (TNF α) or VEGF, respectively. These studies demonstrate that RS stabilized the endothelial barrier in the face of both cytokines and VEGF, and thereby identify RS as a therapeutic that has the potential to overcome permeability driven by multiple agonists that play a role in the pathology of DR.
Handgrip Strength Is Associated with Specific Aspects of Vascular Function in Individuals with Metabolic Syndrome
Authors: Sánchez-Delgado Juan Carlos , Cohen Daniel D. , Camacho-López Paul A. , Carreño-Robayo Javier , Castañeda-Hernández Alvaro , García-González Daniel , Martínez-Bello Daniel , Aroca-Martinez Gustavo , Parati Gianfranco , Lopez-Jaramillo Patricio
Published: August 2023

Background: Metabolic syndrome (MetS) is a disorder associated with an increased risk for the development of diabetes mellitus and its complications. Lower isometric handgrip strength (HGS) is associated with an increased risk of cardiometabolic diseases. However, the association between HGS and arterial stiffness parameters, which are considered the predictors of morbidity and mortality in individuals with MetS, is not well defined. Objective: To determine the association between HGS and HGS asymmetry on components of vascular function in adults with MetS. Methods: We measured handgrip strength normalized to bodyweight (HGS/kg), HGS asymmetry, body composition, blood glucose, lipid profile, blood pressure, pulse wave velocity (PWV), reflection coefficient (RC), augmentation index @75 bpm (AIx@75) and peripheral vascular resistance (PVR) in 55 adults with a diagnosis of MetS between 25 and 54 years old. Results: Mean age was 43.1 ± 7.0 years, 56.3% were females. HGS/kg was negatively correlated with AIx@75 (r = −0.440), p < 0.05, but these associations were not significant after adjusting for age and sex. However, when interaction effects between sex, HGS/kg and age were examined, we observed an inverse relationship between HGS/kg and AIx@75 in the older adults in the sample, whereas in the younger adults, a weak direct association was found. We also found a significant association between HGS asymmetry and PVR (beta = 30, 95% CI = 7.02; 54.2; p <0.012). Conclusions: Our findings suggest that in people with MetS, maintaining muscle strength may have an increasingly important role in older age in the attenuation of age-related increases in AIx@75—a marker of vascular stiffness—and that a higher HGS asymmetry could be associated with a greater vascular resistance.
Acoustic Voice Analysis as a Useful Tool to Discriminate Different ALS Phenotypes
Authors: Milella Giammarco , Sciancalepore Diletta , Cavallaro Giada , Piccirilli Glauco , Nanni Alfredo Gabriele , Fraddosio Angela , D’Errico Eustachio , Paolicelli Damiano , Fiorella Maria Luisa , Simone Isabella Laura
Published: August 2023

Approximately 80–96% of people with amyotrophic lateral sclerosis (ALS) become unable to speak during the disease progression. Assessing upper and lower motor neuron impairment in bulbar regions of ALS patients remains challenging, particularly in distinguishing spastic and flaccid dysarthria. This study aimed to evaluate acoustic voice parameters as useful biomarkers to discriminate ALS clinical phenotypes. Triangular vowel space area (tVSA), alternating motion rates (AMRs), and sequential motion rates (SMRs) were analyzed in 36 ALS patients and 20 sex/age-matched healthy controls (HCs). tVSA, AMR, and SMR values significantly differed between ALS and HCs, and between ALS with prevalent upper (pUMN) and lower motor neuron (pLMN) impairment. tVSA showed higher accuracy in discriminating pUMN from pLMN patients. AMR and SMR were significantly lower in patients with bulbar onset than those with spinal onset, both with and without bulbar symptoms. Furthermore, these values were also lower in patients with spinal onset associated with bulbar symptoms than in those with spinal onset alone. Additionally, AMR and SMR values correlated with the degree of dysphagia. Acoustic voice analysis may be considered a useful prognostic tool to differentiate spastic and flaccid dysarthria and to assess the degree of bulbar involvement in ALS.
Large-Separation Behavior of the Casimir–Polder Force from Real Graphene Sheet Deposited on a Dielectric Substrate
Authors: Klimchitskaya Galina L. , Mostepanenko Vladimir M.
Published: August 2023

The Casimir–Polder force between atoms or nanoparticles and graphene-coated dielectric substrates is investigated in the region of large separations. Graphene coating with any value of the energy gap and chemical potential is described in the framework of the Dirac model using the formalism of the polarization tensor. It is shown that the Casimir–Polder force from a graphene-coated substrate reaches the limit of large separations at approximately 5.6 μm distance between an atom or a nanoparticle and graphene coating independently of the values of the energy gap and chemical potential. According to our results, however, the classical limit, where the Casimir–Polder force no longer depends on the Planck constant and the speed of light, may be attained at much larger separations depending on the values of the energy gap and chemical potential. In addition, we have found a simple analytic expression for the Casimir–Polder force from a graphene-coated substrate at large separations and determined the region of its applicability. It is demonstrated that the asymptotic results for the large-separation Casimir–Polder force from a graphene-coated substrate are in better agreement with the results of numerical computations for the graphene sheets with larger chemical potential and smaller energy gap. Possible applications of the obtained results in nanotechnology and bioelectronics are discussed.
Current Advances in Cellular Approaches for Pathophysiology and Treatment of Polycystic Ovary Syndrome
Authors: Tsai Yi-Ru , Liao Yen-Nung , Kang Hong-Yo
Published: August 2023

Polycystic ovary syndrome (PCOS) is a prevalent gynecological and endocrine disorder that results in irregular menstruation, incomplete follicular development, disrupted ovulation, and reduced fertility rates among affected women of reproductive age. While these symptoms can be managed through appropriate medication and lifestyle interventions, both etiology and treatment options remain limited. Here we provide a comprehensive overview of the latest advancements in cellular approaches utilized for investigating the pathophysiology of PCOS through in vitro cell models, to avoid the confounding systemic effects such as in vitro fertilization (IVF) therapy. The primary objective is to enhance the understanding of abnormalities in PCOS-associated folliculogenesis, particularly focusing on the aberrant roles of granulosa cells and other relevant cell types. Furthermore, this article encompasses analyses of the mechanisms and signaling pathways, microRNA expression and target genes altered in PCOS, and explores the pharmacological approaches considered as potential treatments. By summarizing the aforementioned key findings, this article not only allows us to appreciate the value of using in vitro cell models, but also provides guidance for selecting suitable research models to facilitate the identification of potential treatments and understand the pathophysiology of PCOS at the cellular level.
Impact of Music Therapy on Quality of Life in Children with Cancer
Authors: Fedhila Faten , Hannachi Mohamed Wassim , Jbebli Elhem , Selmi Ines , Rhayem Samar , Magouri Issam , Bellali Hedia , Khemiri Monia
Published: August 2023

Background: Music therapy (MT) is a non-pharmacological treatment increasingly used to reduce stress and anxiety in hospitalized children affected by cancers. The aim of this study was to evaluate the impact of MT on quality of life in children with cancer and determine its effect on cardiorespiratory rates. Methods: We conducted a quasi-experimental study between 1 April and 31 August 2021 at Bechir Hamza children’s Hospital in Tunis, including children treated for cancer. The child or parent completed the PedsQL Module Cancer French version 3.0 questionnaires before and after four weekly music therapy sessions. The child’s respiratory and heart rates were measured before and after each session. Results: We included 20 children whose mean age was 7 ± 4.5 years. The median value of the total questionnaire score increased from 57 [46; 70] to 72 [67; 85] (p < 10−3) noting a significant reduction in pain (p = 0.02), nausea (p = 0.009), and anxiety related to medical procedures (p = 0.009) and worry about the future (p = 0.005). We highlighted a significant decrease in respiratory and heart rate after MT (p < 0.05). Conclusions: MT has positive impact on quality of life in children with cancer and reduces stress by lowering their cardiorespiratory rates.
Investigation of Quality of Life of Patients with Atopic Dermatitis and Quality of Life, Psychiatric Symptomatology, and Caregiver Burden of Their Mothers
Authors: Kilic Nülüfer , Kilic Mehmet
Published: August 2023

Background: The purpose of the present research was to evaluate the quality of life of patients with atopic dermatitis (AD), and that of their mothers. We compared the anxiety and depression scores and caregiving burden of mothers of patients with AD with the same scores of mothers of healthy children. Materials and Methods: A total of 153 patients between the ages of 2 months and 16 years with AD in our clinic, and their mothers, were contained in the patient group. An additional 141 healthy cases between the ages of 2 months and 16 years, and their mothers, were included as the control group. The Children’s Dermatology Life Quality Index (CDLQI) was completed according to the children’s opinions, and the Infant’s Dermatitis Quality of Life Index (IDLQI), Family Dermatology Life Quality Index (FDLQI), Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI), Temperament Evaluation of Memphis, Pisa, Paris and San Diego Autoquestionnaire, and Zarit Caregiver Burden (ZCB) scale were completed based on the mothers’ opinions. Results: We detected a positive relationship between the SCORAD index and the IDLQI, CDLQI, and FDLQI scores of children with AD. We found that anxiety, depression, and caregiving burden in mothers of AD cases increased when mothers of AD cases were compared with mothers of healthy children (p < 0.0001, p < 0.0001, and p < 0.002, respectively). Also, based on the mothers’ responses, we noted a positive correlation among the BDI, BAI, ZCB, and SCORAD index scores. Conclusions: Our study found that the quality of life of patients with AD, and that of their mothers, was negatively affected by the disease. We also found that anxiety, depression levels (not at the clinical diagnosis level, and the caregiving burden in mothers of AD cases increased when mothers of AD cases were compared with mothers of healthy children.
Laser-Assisted Drug Delivery on the Face: A Systematic Review of Indications and Outcomes
Authors: Seretis Konstantinos , Papaioannou Konstantina
Published: August 2023

Laser-assisted drug delivery (LADD) has gained prominence as a promising technique with the potential to enhance topical drug skin penetration and absorption. However, the effectiveness of various laser-assisted facial procedures remains unclear. This systematic review aimed to explore and summarize the evidence regarding the indications, clinical outcomes, and adverse effects of LADD performed on the face. Based on a predetermined protocol, an electronic search in MEDLINE, Scopus, the Cochrane Library, and CENTRAL electronic databases was conducted. Eligible studies comprised prospective controlled trials that explored the utility of laser-assisted techniques for topical medication facial application and reported on efficacy and/or safety. Secondary outcomes encompassed patient satisfaction. This review included 12 prospective controlled studies involving a total of 271 participants. LADD, through various laser types, topical medications, clinical protocols, and follow-up assessments, showed enhanced melasma, facial rejuvenation, scar, and periprocedural laser outcomes without increased risk of adverse effects. This review provides evidence that LADD is an effective and safe adjunct for various facial procedures. It also highlights the necessity for further high-quality studies with larger sample sizes, standardized treatment protocols, and evaluation of long-term outcomes and adverse effects in order to elucidate the potential of laser-assisted drug delivery.
Functional Recovery of COVID-19 Patients Admitted to a Cardiopulmonary Inpatient Rehabilitation Unit
Authors: Comley Steele Amy , McKenna Heather , Teale Amy
Published: August 2023

Introduction: With changes in treatments, precautions, and the virus itself, the continued evaluation of post-COVID-19 patient rehabilitation needs is essential. Methods: Demographics, comorbidities, functional assessments, quality of life, and rehabilitation outcomes for 98 patients admitted to inpatient rehabilitation during New York’s most recent major COVID-19 hospitalization surge were analyzed. Patients were contacted at 6 months to evaluate functional improvement, post-COVID-19 symptoms, vaccination status, and quality of life. Results: Inpatient rehabilitation addressed significant limitations in lung capacity, mobility, and self-care. Median mobility scores improved significantly from admission (16) to discharge (34) and follow-up (42). Sixty-six percent of patients reported overall quality of life improvement during their rehabilitation stay; at follow-up, a more modest percentage (35%) reported additional gains. Continued improvement in supplemental oxygen use was observed in 49% of patients who completed the follow-up assessment. Consistent with previous studies on severe disease, post-COVID-19 condition features were exhibited by 86% of patients at follow-up; vaccinated individuals displayed fewer symptoms associated with post-COVID-19 condition than their unvaccinated counterparts. Conclusions: Individuals recovering from severe COVID-19, including previously ventilated patients, made significant functional and quality of life gains during inpatient rehabilitation. While functional independence continued to improve post-discharge, patients exhibited greater improvement from admission to discharge than from discharge to 6-month follow-up. Inpatient rehabilitation represents a crucial component for recovery from severe COVID-19.
Bulk Polystyrene-BaF2 Composite Scintillators for Highly Efficient Radiation Detection
Authors: Li Xiang , Deng Mingxue , Shi Yun , Qi Xuejun , Wang Shaohan , Lu Yugui , Du Yong , Chen Junfeng
Published: August 2023

Organic–inorganic composite scintillators, demonstrating advantages of easy large-area preparation and a high detection efficiency, have shown enormous potential application prospects in radiation detection and imaging. In this study, bulk polystyrene (PS) composite scintillators were successfully prepared by embedding inorganic BaF2 particles with a loading amount of up to 80 wt% during the polymerization process of the plastic scintillator. The inorganic BaF2 particles were uniformly dispersed in the organic matrix. With the increase of the loading amounts of BaF2 particles, the X-ray-excited luminescence intensity of the PS-BaF2 composite scintillators was about eight times higher than that of the commercial pure plastic scintillator. The scintillation counts under the gamma ray (59.5 KeV) irradiation also showed that the detection efficiency was obviously enhanced by BaF2 particle loading. More importantly, their scintillation pulse retains the decay kinetics of the organic matrix without loading the slow-decay component of BaF2. This work provides a promising solution for the application of the PS-BaF2 composite scintillator in high-efficiency radiation detection and large-area imaging.
Improved Mechanical Properties of SUS304/AA5083 Dissimilar Joint by Laser Ablation Pretreatment in Vortex- Friction Stir Lap Welding
Authors: Liu Xiaochao , Luo Jingyue , Bao Wenhui , Pei Xianjun , Wang Qinghua , Ni Zhonghua
Published: August 2023

To obtain a high-quality Al/steel dissimilar joint, a micro-groove-assisted vortex-friction stir lap welding (MG-VFSLW) process was developed. Through prefabricating micro-grooves on the steel plate surface by laser ablation, high-quality mechanical interlock and metallurgical bonding were obtained simultaneously in the MG-VFSLW process. The weld formation, interface microstructure, mechanical properties, and failure mode in MG-VFSLW were studied by comparing them with those in VFSLW. The results showed that a line load of the AA5083/SUS304 dissimilar joint up to 485.9 N/mm was obtained by MG-VFSLW, which is 40.1% higher than that in VFSLW. Remarkable intermetallic compound layers and cracks were found in VFSLW. The cracks were closely related to the oxides on the interface. However, in MG-VFSLW, cross-riveting aluminum rivets and steel rivets were formed on the interface due to the micro-grooves and flashes made by the laser ablation. Good metallurgical bonding was also formed between AA5083 and SUS304. No remarkable intermetallic compound layers and cracks occurred. During the tensile shear tests, the aluminum rivets were cut off and some dimples and tear ridges existed on the fracture surface. In short, the high strength of the Al/steel lap joint in MG-VFSLW was attributed to the high-quality mechanical interlock and metallurgical bonding.
Dataset of Multi-Aspect Integrated Migration Indicators
Authors: Goglia Diletta , Pollacci Laura , Sîrbu Alina
Published: August 2023

Nowadays, new branches of research are proposing the use of non-traditional data sources for the study of migration trends in order to find an original methodology to answer open questions about cross-border human mobility. New knowledge extracted from these data must be validated using traditional data, which are however distributed across different sources and difficult to integrate. In this context we present the Multi-aspect Integrated Migration Indicators (MIMI) dataset, a new dataset of migration indicators (flows and stocks) and possible migration drivers (cultural, economic, demographic and geographic indicators). This was obtained through acquisition, transformation and integration of disparate traditional datasets together with social network data from Facebook (Social Connectedness Index). This article describes the process of gathering, embedding and merging traditional and novel variables, resulting in this new multidisciplinary dataset that we believe could significantly contribute to nowcast/forecast bilateral migration trends and migration drivers.
Improving the Performance of an Innovative Centrifugal Pump through the Independent Rotation of an Inducer and Centrifugal Impeller Speeds
Authors: Dehnavi Ehsan , Solis Moises , Danlos Amelie , Kebdani Mohamed , Bakir Farid
Published: August 2023

This article introduces an innovative design for a centrifugal pump featuring an inducer that enables the independent rotation of both the inducer and the centrifugal impeller. Unlike conventional designs, this configuration allows for differential speeds and customizable rotation directions, including co-rotation and counter-rotation modes. These new capabilities offer numerous operational advantages. This study investigates the impact of the speed ratio between the inducer and the impeller on the pump’s performance in both the co-rotation and counter-rotation modes. The results demonstrate that the independent rotation of the inducer expands the pump’s operating range, while counter-rotation significantly enhances the generation of pressure and the pump’s efficiency compared to co-rotation. These findings pave the way for the development of pumps that offer benefits such as a reduced size, reduced vibration, minimized energy consumption, and improved cavitation performance.
A Review of Energy Efficiency Interventions in Public Buildings
Authors: Papadakis Nikolaos , Katsaprakakis Dimitrios Al.
Published: August 2023

This research provides a comprehensive exploration of energy efficiency dynamics in non-residential public buildings such as schools, swimming pools, hospitals, and museums. Recognizing the distinct energy consumption patterns of each building type, the study accentuates the unique challenges they present, with a particular focus on the continuous and intensive energy demands of hospitals and the unparalleled energy needs of swimming pools. Through an extensive review of various case studies, the research unveils prevailing energy consumption trends, highlighting the role of metrics in assessing energy efficiency and the inherent challenges these metrics face in ensuring uniformity and direct comparability. A core element of this analysis emphasizes the dual nature of technical retrofitting, categorizing interventions into passive and active measures. The research delves into the sustainability imperatives of energy interventions, exploring the economic motivations underpinning retrofit decisions, and the intricate relationship between advanced technological solutions and the behavioral tendencies of building operators and users. Additionally, the study uncovers the influence of external determinants such as climatic factors and government policies in shaping energy consumption in public buildings. In synthesizing these findings, the paper offers insightful recommendations, emphasizing the need for an integrated approach that harmonizes technological innovations with informed operational habits, aiming to optimize energy efficiency in public non-residential buildings.
Estimating Forest Aboveground Biomass Combining Pléiades Satellite Imagery and Field Inventory Data in the Peak–Cluster Karst Region of Southwestern China
Authors: Guo Yinming , Zhu Meiping , Wu Yangyang , Ni Jian , Liu Libin , Xu Yue
Published: August 2023

The mountainous region of southwest China has the largest karst geomorphology in China and in the world. Quantifying the forest aboveground biomass in this karst region is of great significance for the investigation of carbon storage and carbon cycling in terrestrial ecosystems. In this study, the actual measured aboveground biomass was calculated based on the allometric functions of 106 quadrats from 2012 to 2015. A backpropagation artificial neural network (BPANN) inversion model was constructed by combining very high-resolution satellite imagery, field inventory data, and land use/land cover data to estimate the forest aboveground biomass in the Banzhai watershed, a typical peak–cluster karst basin in southern Guizhou Province. We used 70% of the actual measured aboveground biomass for training the BPANN model, 20% for accuracy verification, and 10% to prevent overtraining. The results show that the absolute root mean square error of the BPANN model was 11.80 t/ha, which accounted for 9.92% of the mean value of aboveground biomass. Based on the BPANN inversion model, the average value of the forests’ aboveground biomass was 135.63 t/ha. The results showed that our study presented a quick, easy, and relatively high-precision method for estimating forest aboveground biomass in the Banzhai watershed. This indicates that the Pléiades image-based BPANN model displayed satisfactory results for estimating the forests’ aboveground biomass in a typical peak–cluster karst basin. This method can be applied to the estimation of forest AGB in the karst mountainous areas of southwest China.
Preparation and Superhydrophobicity of Nano-Al-Coated Wood by Magnetron Sputtering Based on Glow-Discharge Plasma
Authors: Xiao Zirun , Ai Ruyi , Wang Yanan , Xu Liying , Li Jingkui
Published: August 2023

A superhydrophobic coating on wood can effectively improve the hydrophobicity and service life of wood. In this study, an Al superhydrophobic nano-coating was constructed on the transversal section of poplar wood by magnetron sputtering based on glow-discharge plasma. The structure, microscopic morphology, surface elements, and hydrophobic properties were characterized and tested. When coated for 20 s, the water contact angle on the sample surface can reach 148.9°. When coated for 30 min, the Al-coated wood had a contact angle of 157.3°, which could maintain excellent superhydrophobic properties for 300 s. The sputtered Al nanoparticles were uniformly distributed on the wood surface and formed nanoclusters. Plenty of voids between the clusters can trap air and block contact between water droplets and the coating, making the coating obtain superhydrophobic properties. When the coating time was 60 min, the characteristic peak of the Al (111) crystal plane appeared at 38.4°, while the intensities of (101), (002), and (040) peaks of cellulose were reduced. In conclusion, magnetron sputtering was used to deposit a superhydrophobic coating on wood without low surface free energy agents. Furthermore, this research provides new inspirations for the physical modification of wood and the construction of superhydrophobic coatings on wood.
Non-Wood Forest Products’ Marketing: Applying a S.A.V.E. Approach for Establishing Their Marketing Mix in Greek Local Mountain Communities
Authors: Trigkas Marios , Pelekani Foteini , Papadopoulos Ioannis , Lazaridou Dimitra C. , Karagouni Glykeria
Published: August 2023

The contribution of non-wood forest products is especially important in the context of rural sustainable development. Nevertheless, their perceived economic and environmental value remains low. The lack of an explicit and effective marketing strategy for NWFPs tailored to local mountain communities’ needs may lead to their restricted access to the market and underestimation of their value. The aim of this paper is to gain knowledge regarding the components of a marketing mix that could support the local markets of NWFPs, in Greek mountainous areas. The paper presents an analysis of the marketing mix for NWFPs, following for the first time the S.A.V.E. approach. The research contributes to the existing literature as we seek to “meet” groups of NWFPs’ consumers, in order to develop a customer-centric value proposition in Greek local mountain communities. The findings indicate that the marketing and promotion of NWFPs requires not only knowledge of the relative products and the market, it requires analysis and knowledge of the specific needs of local mountain communities and the ways that needs are met by the attributes and characteristics of the NWFPs as part of the solution that they can offer. Local mountain communities in Greece, through the exploitation of NWFPs, are trying to face challenges regarding the improvement of their income and their general wellbeing level. Also, we propose as a part of the marketing mix for NWFPs, their promotion as products with a distinct spatial, local identity, by associating them with local “culture economies”. Finally, we argue that a customer-centric marketing mix of NWFPs, which focuses on customers’ needs, desires, and resources as the starting point of the planning process, involves a higher level of mixing and synergies creation along the whole value chain, than simple personalization, with customers to interact with suppliers using ICT and by personal time disposition connected to nature.
Identification of Candidate Genes Involved in Bud Growth in Pinus pinaster through Knowledge Transfer from Arabidopsis thaliana Models
Authors: Alvarez José Manuel , Rodríguez Sonia María , Fuente-Maqueda Francisco , Feito Isabel , Ordás Ricardo Javier , Cuesta Candela
Published: August 2023

Pinus pinaster is a plant species of great ecological and economic importance. Understanding the underlying molecular mechanisms that govern the growth and branching of P. pinaster is crucial for enhancing wood production and improving product quality. In this study, we describe a simple methodology that enables the discovery of candidate genes in Pinus pinaster by transferring existing knowledge from model species like Arabidopsis thaliana and focusing on factors involved in plant growth, including hormonal and non-hormonal pathways. Through comparative analysis, we investigated the main genes associated with these growth-related factors in A. thaliana. Subsequently, we identified putative homologous sequences in P. pinaster and assessed the conservation of their functional domains. In this manner, we can exclude sequences that, despite displaying high homology, lack functional domains. Finally, we took an initial approach to their validation by examining the expression levels of these genes in P. pinaster trees exhibiting contrasting growth patterns. This methodology allowed the identification of 26 candidate genes in P. pinaster. Our findings revealed differential expression patterns of key genes, such as NCED3, NRT1.2, PIN1, PP2A, ARF7, MAX1, MAX2, GID1, AHK4, AHP1, and STP1, in relation to the different growth patterns analyzed. This study provides a methodological foundation for further exploration of these genes involved in the growth and branching processes of P. pinaster. This will contribute to the understanding of this important tree species and open new avenues for enhancing its utilization in sustainable forestry practices.
Assessment of the Potential of Indirect Measurement for Sap Flow Using Environmental Factors and Artificial Intelligence Approach: A Case Study of Magnolia denudata in Shanghai Urban Green Spaces
Authors: Zhang Biao , Zhang Dongmei , Feng Zhongke , Zhang Lang , Zhang Mingjuan , Fu Renjie , Wang Zhichao
Published: August 2023

The measurement of plant sap flow has long been a traditional method for quantifying transpiration. However, conventional direct measurement methods are often costly and complex, thereby limiting the widespread application of tree sap flow monitoring techniques. The concept of a Virtual Measurement Instrument (VMI) has emerged in response to this challenge by combining simple instruments with Artificial Intelligence (AI) algorithms to indirectly assess specific measurement objects. This study proposes a tree sap flow estimation method based on environmental factors and AI algorithms. Through the acquisition of environmental factor data and the integration of AI algorithms, we successfully achieved indirect measurement of tree sap flow. Accounting for the time lag response of the flow to environmental factors, we constructed the Magnolia denudata sap flow estimation model using the K-Nearest Neighbor (KNN), Random Forest (RF), Backpropagation Neural Network (BPNN), and Long Short-Term Memory network (LSTM) algorithms. The research results showed that the LSTM model demonstrated greater reliability in predicting sap flow velocity, with R2 of 0.957, MAE of 0.189, MSE of 0.059, and RMSE of 0.243. The validation of the target tree yielded an R2 of 0.821 and an error rate of only 4.89% when applying the model. In summary, this sap flow estimation method based on environmental factors and AI provides new insights and has practical value in the field of tree sap flow monitoring.
An Alternative Method for Dating of Wildfire Occurrence from Tree-Ring Cores: A Case Study in Northeastern Asia
Authors: Mei Zepeng , Fang Keyan , Yao Qichao , Wang Zhou , He Maosheng , Wu Hao , Zhou Feifei , Tang Wanru , Bai Maowei , Dong Zhipeng
Published: August 2023

The tree-ring fire scar stands as a pivotal proxy for reconstructing historical wildfire occurrences, providing invaluable context for comprehending contemporary wildfire activities during the Anthropocene era. Precise identification of fire scars often necessitates sampling complete tree disks. Yet, stringent forest resource protection policies limit such collection in certain regions, thus curtailing the application of tree-ring-based fire reconstruction. While current methods based on tree-ring cores can ascertain the age range of fire events, pinpointing the exact year remains challenging. In this study, we propose a novel approach for detecting fire occurrence years by recognizing abrupt shifts in the tree-ring geometric center (TRGC). This method entails extracting a minimum of three tree-ring cores from the uninjured side of the tree and in proximity to the fire scar. We validated this method’s efficacy using samples from Transbaikal of Russia, in northeastern Asia, where fire years have already been documented. Our results show that this method accurately identified the fire year in nine fire scars with a 67 percent probability of exact agreement with the actual fire year. It is noteworthy that this method particularly excels in cases of trees with a single fire scar. We recommend employing the traditional method of collecting tree-ring cores near the fire scar to establish the age range of the fire scar. Subsequently, within this determined range, we suggest detecting the shifts in the TRGC to accurately pinpoint the exact year of the fire scar.
Recent Advances, Challenges, and Metabolic Engineering Strategies in L-Cysteine Biosynthesis
Authors: Li Wenwei , Zhou Zhen , Wang Dan
Published: August 2023

L-Cysteine is a widely used unique sulfur-containing amino acid with wide application in the food, pharmaceutical, and agricultural industries. This paper concludes the advantages and disadvantages of chemical hydrolysis, enzymatic biotransformation, and fermentation for the synthesis of L-cysteine. Meanwhile, a detailed introduction is given to the biosynthesis of L-cysteine, metabolic engineering strategies, and the latest progress in reported L-cysteine fermentation bacteria. Finally, insights are provided on the development direction of increasing the production of biosynthetic L-cysteine in the future. This review provides ideas for the future development of more efficient L-cysteine biosynthetic pathways.