bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimal Design of Satellite Antenna Based on Sandwich Structure with a Novel Re-entrant Honeycomb Considering Thermal Load
Authors: He Jiahao , Wang Meng , Zhou Yang , Pan Yi , Sun Beibei 
Published: June 2022

Abstract
In order to optimize the thermal deformation of satellite antenna, a new type of negative thermal expansion metamaterial with the re-entrant honeycomb for sandwich structure was designed and optimized. Coefficient of thermal expansion (CTE), Poisson’s ratio and Young’s modulus of the metamaterial were calculated by finite element method (FEM). After sensitivity analysis, five parameters of the metamaterial were optimized by response surface method (RSM) and multi-island genetic algorithm (MIGA). It is found that the satellite antenna with the optimized re-entrant honeycomb shows better mechanical properties and its thermal deformation is reduced effectively.
TiO2 nanotubes-MoS2/PDA-LL-37 exhibits efficient anti-bacterial activity and facilitates new bone formation under near-infrared laser irradiation
Authors: Jin Mingchao , Zhu Juli , Meng Zhipeng , Jiang Xuesheng , Chen Zhuo , Xu Juntao , Gao Hongliang , Zhu Junkun , Wu Fengfeng 
Published: June 2022

Abstract
Titanium dioxide (TiO2), as one of the titanium (Ti)-based implants, holds a promise for a variety of anti-bacterial application in medical research. In the current study, a functional molybdenum disulfide (MoS2)/polydopamine (PDA)-LL-37 coating on titanium dioxide (TiO2) implant was prepared. Anodic oxidation and hydrothermal treatment was given to prepare TiO2 nanotubes-MoS2/PDA-LL-37 (T-M/P-L). The in vitro osteogenic effect of T-M/P-L was evaluated by measuring mesenchymal stem cell (MSC) adhesion, proliferation, alkaline phosphatase (ALP) activity, extracellular matrix (ECM) mineralization, collagen secretion and osteoblast-specific messenger RNAs (mRNAs) expression. The determination on the anti-bacterial ability of T-M/P-L was followed. Furthermore, the ability of T-M/P-L to promote bone formation in vivo was evaluated. Near-infrared (NIR) laser irradiation exposure enabled the T-M/P-L coating-endowed Ti substrates to hold effective anti-bacterial ability. T-M/P-L promoted the adhesion and proliferation of MSCs. In addition, an increase was witnessed regarding the ALP activity, collagen secretion and ECM mineralization, along with the expression of runt-related transcription factor 2, ALP and osteocalcin in the presence of T-M/P-L. Additionally, T-M/P-L could stimulate endothelial cells to secrete vascular endothelial growth factor (VEGF) and promote capillary-like tubule formation. Upon NIR laser irradiation exposure, T-M/P-L not only exhibited efficient in vivo anti-bacterial activity but also facilitated new bone formation. Collectively, T-M/P-L had enhanced anti-bacterial and osteogenic activity under NIR laser irradiation.
The studies of the Svalbard glacial surfaces albedo by an unmanned aerial vehicle.
Authors: Ivanov B V , Zhuravskiy D M , Prokhorova U V , Bezgreshnov A M , Terekhov A V , Kurapov M V , Paramzin A S , Kashkova V S 
Published: June 2022

Abstract
Experiments related to the use of unmanned aerial vehicle (UAV) for assessing the albedo of Svalbard glaciers is described. Study area - Esmark Glacier (Isfjord Bay) and Aldegonda Glacier (Greenfjord Bay). The main purpose of the experiments is to estimate the surface albedo in the zone of the edge cracks of the outlet glacier (Esmark), where standard ground-based observations are impossible due to safety conditions, as well as to obtain spatial albedo estimates (Aldegonda) when satellite data cannot be used (overcast). The UAV (DJI Phantom 4 Pro) was retrofitted with a sensor that measures reflected solar radiation. The data on the incoming solar radiation at the surface level, measured by a similar sensor, were used to calculate the albedo. The albedo measurements were carried out along several profiles across the Aldegonda Glacier and along one profile above the Esmark Glacier, which was laid from a flat plateau (ice dome) through a zone of cracks to the open water surface of the fiord. For the first time, estimates of the surface albedo of the outlet glacier in the zone of edge cracks were obtained. Ground-based verification observations carried out on the Aldegonda glacier confirmed the results obtained by the UAV.
Transport of biomass burning products from Siberian wildfires into the Arctic
Authors: Sitnov S A , Mokhov I I 
Published: June 2022

Abstract
The study of the long-range transport of biomass burning products from Siberian wildfires into the Arctic atmosphere during the period of 2000-2019 is presented. An analysis of the characteristics of forest fires over the past 20 years revealed an increase in radiation power of an average Siberian wildfire, which is characterized by a statistically significant linear trend of 1.7 ± 1.0% / year. A joint analysis of fire activity in Siberian forests, as well as the contents of the black carbon (BC) and carbon monoxide (CO) contents in the Arctic atmosphere, indicates that extreme fire events force the development of regional anomalies in BC and CO. Correlation between the anomalies of BC (CO) over the Russian segment of the Arctic and the number of Siberian wildfires is found to be statistically significant at the α = 0.05 level and reach the value r = 0.77 (0.48) during the summer months. Using a linear regression model, an estimate of the sensitivity of changes in the total BC content and in the volume mixing ratio of CO at the 700-hPa level in the 1.910-8 kg⋅m-2 per 1000 fires and 0.4 ppbv per 1000 fires, respectively. The results of a detailed analysis of the long-range BC transport into the Arctic during catastrophic Siberian wildfires in the summer of 2019 are presented. It is shown that the considered episode was conditioned by the features of the large-scale atmospheric circulation characteristic for the atmospheric blocking event.
Influence of air temperature on air composition in Moscow
Authors: Lokoshchenko M A , Bogdanovich A Yu , Elansky N F 
Published: June 2022

AbstractEmpirical relations between T and surface concentrations of CO2and five minor air gases have been studied on a base of hourly data during 12 years. In wide range -6…+15 °C significant changes of minor gases are absent. Real tendencies are increase of O3and, vice versa, fall of NO and NO2with increasing T from +15.+17 to +38 °C. Both effects are a consequence of unstable stratification that enhances vertical mixing. In cool weather -7.-18 °C O3falls whereas nitrogen oxides grow with decreasing T due to frequent inversions and slowing down the NO oxidation rate. At an even lower temperature up to -30 °C NO and NO2, vice versa, decrease with decreasing T – probably, due to strong cold advection of clean Arctic air. Unlike minor gases, CO2decreases with increasing T up to 25 °C due to photosynthesis intensification from winter to summer. Seeming growth of CO at T>27 °C is fully explained by smoky haze during heat waves in 2010 and 2002. The CO2growth in hot weather is also created by heat stress of trees. Thus, except only oxidation rate, any influence of T is indirect as a result of stratification, photosynthesis, smoky haze, advection, etc.
The parameters of internal gravity waves in the atmosphere from the amplitude fluctuations of radio occultation signals
Authors: Kan V , Gorbunov M E , Shmakov A V , Fedorova O V , Sofieva V F 
Published: June 2022

Abstract
We develop a method for the reconstruction of the statistical parameters of internal gravity wave (IGW) in the atmosphere from the amplitude fluctuations of signals acquired in radio occultation observations. We discuss the choice of the model of the IGW spatial spectrum, derive the relationships between the IGW spectra and the amplitude fluctuation spectra, develop the reconstruction algorithm and estimate its uncertainties. The IGW spectrum parameters to be retrieved are the outer (dominant) scale and the structure characteristic, the latter determining the power of saturated IGW. The method was tested on the COSMIC (Constellation Observing System for Meteorology, Ionosphere and Climate) observations acquired in the winter and summer seasons 2011. The IGW parameters were reconstructed in the height range from the upper boundary of the tropopause to 28 km. We show the altitude-latitudinal distributions of the IGW parameters and two integral characteristics: the variances of the temperature fluctuations and the IGW potential energy. We perform a detailed comparison of our results with those obtained from radiosonde and radio occultation observations. The developed method can be applied for the global monitoring of IGW parameters and activity in the middle atmosphere.
Changes of the sea ice and snow cover extent associated with temperature changes in the Northern and Southern Hemispheres in recent decades
Authors: Mokhov I I , Parfenova M R 
Published: June 2022

Abstract
Changes in snow cover and sea ice extents associated with temperature changes in the Northern and Southern Hemispheres for the period 1979-2020 are analysed using monthly-mean satellite and reanalysis data. Quantitative estimates of the relationship between the Antarctic and Arctic sea ice and changes in the surface air temperature were obtained. Overall increase of the Antarctic sea ice extent is associated with the regional manifestation of natural multidecadal climate modes with periods of up to several decades (against the background of global warming and a rapid decrease in the extent of sea ice in the Arctic). The results of correlation and cross-wavelet analyses show significant coherence and negative correlation of the surface air temperature in both Arctic and Antarctic with the respective sea ice extent in recent decades. Seasonal and regional features of the snow cover sensitivity to changes in the temperature regime in the Northern Hemisphere for the past four decades are noted. The features of snow cover variability in Eurasia and North America are presented.
On the reaction of planetary altitudinal frontal zone to climatic changes
Authors: Morozova S V , Denisov K E , Kondakov K S , Polyanskaya E A , Ormeli E I , Kononova N K 
Published: June 2022

Abstract
This article examines the dynamics of the planetary high-altitude frontal zone in two natural climatic periods of the state of the earth's climate system - the stabilization period and the second wave of global warming. A change in the area and intensity of the altitudinal frontal zone in different climatic periods was found. The planetary altitudinal frontal zone area expands and its intensity decreases from the stabilization period to the second wave of global warming. The climatic change in the area of planetary altitudinal frontal zone is opposite to the seasonal dynamics of this characteristic. Climate change in intensity is similar to seasonal change. The mechanism of action of negative feedback (air temperature - dynamics of the planetary altitudinal frontal zone) is discovered and described. For the first time, negative feedback has been applied to predict climate variability at finite time scales.
Anthropogenic impact on arctic near-surface methane: observations and model simulations
Authors: Shtabkin Yu A , Moiseenko K B , Skorokhod A I 
Published: June 2022

Abstract
Impact of climatically significant anthropogenic emissions to seasonal methane (CH4) variations observed at arctic and subarctic background stations in 1999 – 2019 has been quantitatively estimated using GEOS-Chem chemical transport model. It is shown that the formation of a stable continental pollution plume from sources in Western Europe, European Russia and Siberia allows to explain up to 5.5–8.6 % of observed CH4 surface concentration (~104–165 ppb). These atmospheric response values are several times higher than the of the observed annual methane variability amplitude (22–36 ppb), which allows to conclude that regional anthropogenic methane emissions sources play a significant role in regional CH4 balance in arctic and subarctic areas.
Curcuma zedoaria 50% methanol extracts increase adiponectin secretion by enhancing PPARγ mRNA expression in 3T3-L1 cells
Authors: Yamasaki Kazuaki , Kuriyama Isoko , Nakai Reiko , Hosokawa Keizo 
Published: June 2022

ABSTRACT
Curcuma zedoaria is a characteristic species of its genus that contains little to no curcuminoid. Here, we demonstrate that C. zedoaria extracts with 50% methanol increases adiponectin secretion into the media by enhancing PPARγ mRNA expression in 3T3-L1 cells. These results indicate that C. zedoaria may be useful for preventing/improving lifestyle-related diseases such as diabetes and atherosclerosis.
CandidatusNitrosopolaris, a genus of putative ammonia-oxidizing archaea with a polar/alpine distribution
Authors: Pessi Igor S , Rutanen Aino , Hultman Jenni 
Published: June 2022

AbstractAmmonia-oxidizing archaea (AOA) are key players in the nitrogen cycle of polar soils. Here, we analyzed metagenomic data from tundra soils in Rásttigáisá, Norway, and recovered four metagenome-assembled genomes (MAGs) assigned to the genus ‘UBA10452’, an uncultured lineage of putative AOA in the order Nitrososphaerales (‘terrestrial group I.1b’), phylum Thaumarchaeota. Analysis of other eight previously reported MAGs and publicly available amplicon sequencing data revealed that the UBA10452 lineage is predominantly found in acidic polar and alpine soils. In particular, UBA10452 MAGs were more abundant in highly oligotrophic environments such as mineral permafrost than in more nutrient-rich, vegetated tundra soils. UBA10452 MAGs harbour multiple copies of genes related to cold tolerance, particularly genes involved in DNA replication and repair. Based on the phylogenetic, biogeographic, and ecological characteristics of 12 UBA10452 MAGs, which include a high-quality MAG (90.8% complete, 3.9% redundant) with a nearly complete 16S rRNA gene, we propose a novel Candidatus genus, Ca. Nitrosopolaris, with four species representing clear biogeographic/habitat clusters.
Transcription factor retention through multiple polyploidization steps in wheat
Authors: Evans Catherine E B , Arunkumar Ramesh , Borrill Philippa 
Published: June 2022

Abstract
Whole-genome duplication is widespread in plant evolutionary history and is followed by nonrandom gene loss to return to a diploid state. Across multiple angiosperm species, the retained genes tend to be dosage-sensitive regulatory genes such as transcription factors, yet data for younger polyploid species is sparse. Here, we analyzed the retention, expression, and genetic variation in transcription factors in the recent allohexaploid bread wheat (Triticum aestivum L.). By comparing diploid, tetraploid, and hexaploid wheat, we found that, following each of two hybridization and whole-genome duplication events, the proportion of transcription factors in the genome increased. Transcription factors were preferentially retained over other genes as homoeologous groups in tetraploid and hexaploid wheat. Across cultivars, transcription factor homoeologs contained fewer deleterious missense mutations than nontranscription factors, suggesting that transcription factors are maintained as three functional homoeologs in hexaploid wheat populations. Transcription factor homoeologs were more strongly coexpressed than nontranscription factors, indicating conservation of function between homoeologs. We found that the B3, MADS-M-type, and NAC transcription factor families were less likely to have three homoeologs present than other families, which was associated with low expression levels and high levels of tandem duplication. Together, our results show that transcription factors are preferentially retained in polyploid wheat genomes although there is variation between families. Knocking out one transcription factor homoeolog to alter gene dosage, using TILLING or CRISPR, could generate new phenotypes for wheat breeding.
The Story of Us: Older and Younger Couples’ Language Use and Emotional Responses to Jointly Told Relationship Narratives
Authors: Wilson Stephanie J , Kiecolt-Glaser Janice K 
Published: June 2022

Abstract

Objectives
Social-emotional well-being is said to improve over adulthood, and studies of couples’ age differences have focused primarily on marital conflict. The way couples discuss their relationship story predicts marital quality among newlyweds and long-married couples alike, yet older and younger couples’ accounts have never been compared. The current study examined age differences in couples’ use of I/we-talk, emotion words, and immediacy (i.e., an urgent and unresolved style) during a relationship history discussion and their subsequent mood reactivity and appraisals.

Method
Married couples (N = 186 individuals within 93 couples, aged 22–77) recounted the story of their relationship then rated the discussion and their negative mood. Mediation models assessed the 3 linguistic features as parallel dyadic mediators linking couple age to negative mood responses and appraisals, controlling for global marital satisfaction, and baseline negative mood. Secondary analyses examined partners’ concordance in language use.

Results
Compared with younger couples, older couples used more positive than negative words and less immediacy which, in turn, was associated with husbands’ and wives’ less negative mood and more positive appraisals, only among husbands. Partners in older couples used more similar I/we-talk and emotional language, but these were unrelated to mood or appraisals.

Discussion
This study extends our understanding of how marital interactions differ by age in the understudied context of relationship history discussions, which may grow increasingly important for couples’ well-being with older age. Findings broadly align with social-emotional aging theories and uncover novel linguistic features relevant to the age-related emotional benefits of joint reminiscing.
Comparison of the Relative Sensitivity of Clinical, Endoscopic, and Histologic Remission for Detection of Treatment Efficacy in Ulcerative Colitis Trials
Authors: Sedano Rocio , Hogan Malcolm , Zou Guangyong , Narula Neeraj , Singh Siddharth , Ma Christopher , Feagan Brian G , Jairath Vipul 
Published: June 2022

Lay Summary
This systemic review and quantitative analysis of placebo-controlled ulcerative colitis (UC) induction trials found higher pooled histologic remission rates compared with clinical and endoscopic remission rates at the same timepoint, and no significant differences in pooled relative risks for these outcomes between treatment groups; supporting the concept that histologic remission is not less sensitive than clinical or endoscopic remission.
Lithium-ion battery capacity configuration strategy for photovoltaic microgrid
Authors: Liu Changsheng , Zhang Xingxing 
Published: June 2022

Abstract
For photovoltaic (PV) microgrid, the instability of PV power generation will bring a lot of trouble to the microgrid, it is a good solution to configure lithium-ion battery and the capacity configuration of lithium-ion battery is the key. This paper proposes a simple and feasible capacity configuration strategy for lithium-ion batteries, different from other studies; it optimizes the capacity configuration of batteries by abandoning extreme situations and further optimizes the capacity configuration according to the actual situation of microgrid load and PV. A microgrid consisting of an ~750 m2 factory with 50 kw PV is selected for analysis, the factory works from Monday to Saturday and rests on Sunday and the required battery capacity can be greatly optimized by adjusting the state of charge of the battery. After calculation, the strategy proposed in this paper requires a battery with only 375 kwh compared with the traditional strategy requiring 650 kwh, which can save ~42.3% of the cost and has good economic value.
Safety and risk of febrile recurrence after early antibiotic discontinuation in high-risk neutropenic patients with haematological malignancies: a multicentre observational study
Authors: Paret Raphael , Le Bourgeois Amandine , Guillerm Gaëlle , Tessoulin Benoit , Rezig Schéhérazade , Gastinne Thomas , Couturier Marie Anne , Boutoille David , Lecomte Raphael , Ader Florence , Le Gouill Steven , Ansart Séverine , Talarmin Jean Philippe , Gaborit Benjamin 
Published: June 2022

Abstract

Background
Early antibiotic discontinuation according to the Fourth European Conference on Infections in Leukaemia (ECIL-4) recommendations is not systematically applied in high-risk neutropenic patients with haematological malignancies.

Methods
A retrospective multicentre observational study was conducted over 2 years to evaluate the safety of early antibiotic discontinuation for fever of unknown origin (FUO) during neutropenia after induction chemotherapy or HSCT, in comparison with a historical cohort. We used Cox proportional hazards models, censored on neutropenia resolution, to analyse factors associated with febrile recurrence.

Results
Among 147 included patients in the ECIL-4 cohort, mainly diagnosed with acute leukaemia (n = 104, 71%), antibiotics were discontinued during 170 post-chemotherapy neutropenic episodes. In comparison with the historical cohort of 178 episodes of neutropenia without antibiotic discontinuation, no significant differences were observed regarding febrile recurrences [71.2% (121/170) versus 71.3% (127/178), P = 0.97], admission in ICUs [6.5% (11/170) versus 11.2% (20/178), P = 0.17], septic shock [0.6% (1/170) versus 3.9% (7/178), P = 0.07] and 30 day mortality [1.4% (2/147) versus 2.7% (4/150), P = 0.084]. In the ECIL-4 cohort, the rate of bacteraemia in case of febrile recurrence was higher [27.1% (46/170) versus 11.8% (21/178), P &lt; 0.01] and antibiotic consumption was significantly lower (15.5 versus 19.9 days, P &lt; 0.001). After early antibiotic discontinuation according to ECIL-4 recommendations, enterocolitis was associated with febrile recurrence [HR = 2.31 (95% CI = 1.4–3.8), P &lt; 0.001] and stage III–IV oral mucositis with bacteraemia [HR = 2.26 (95% CI = 1.22–4.2), P = 0.01].

Conclusions
After an FUO episode in high-risk neutropenia, compliance with ECIL-4 recommendations for early antibiotic discontinuation appears to be safe and mucosal damage was associated with febrile recurrence and bacteraemia. Prospective interventional studies are warranted to assess this strategy in high-risk neutropenic patients.
Trehalose decreases mRNA and protein expressions of c-Jun and JunB in human cervical cancer HeLa cells
Authors: Umeda-Miyara Kanae , Miyara Masatsugu , Sanoh Seigo , Kotake Yaichiro 
Published: June 2022

AbstractIncreasing evidence suggests that trehalose, a non-reducing disaccharide, ameliorates disease phenotypes by activating autophagy in animal models of various human diseases, including neurodegenerative diseases. Multiple in vitro studies suggest that activation of transcription factor EB, a master regulator of lysosomal biogenesis and autophagy genes, is a major contributor to trehalose-induced autophagy at later stages of exposure. However, underlying causes of trehalose-induced autophagy possibly occur at the early stage of the exposure period. In this study, we investigated the effects of short-term exposure of HeLa cells to trehalose on several signal transduction pathways to elucidate the initial events involved in its beneficial effects. Phospho-protein array analysis revealed that trehalose decreases levels of phosphorylated c-Jun, a component of the transcription factor activator protein-1, after 6 h. Trehalose also rapidly reduced mRNA expression levels of c-Jun and JunB, a member of the Jun family, within 1 h, resulting in a subsequent decrease in their protein levels. Future studies, exploring the interplay between decreased c-Jun and JunB protein levels and beneficial effects of trehalose, may provide novel insights into the mechanisms of trehalose action.