bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of dietary conjugated linoleic acid in broiler breeders and egg storage time on the fatty acid profile, lipid oxidation and internal egg quality
Authors: Silvério Priscila S. , de Lima Cristiane B. , da Silva Frederico L. , Mendonça Márcio A. , Tanure Candice B. G. S. , Stringhini José Henrique , Racanicci Aline M. C. 
Published: June 2023

Context The need for the storage of fertile eggs is a reality in the poultry industry. At the same time, prolonged storage periods decrease the quality of egg components that are essential for embryo development, and can compromise hatchability and chick quality; thus, the high content of unsaturated fatty acids in embryo tissues increase the susceptibility to peroxidation. Aims The objective of this study was to evaluate the addition of cis-9, trans-11, trans-10 and cis-12 isomers of conjugated linoleic acid (CLA) to the broiler-breeder diet and the storage time on the internal egg quality, composition and lipid oxidation. Methods In total, 22 000 Cobb female broiler breeders of 58 weeks of age were fed with diets containing 0 or 0.024% CLA and fertile eggs were stored 3, 6 or 9 days prior to incubation. In total, 6912 hatching eggs were used in a completely randomised experimental design in a 2 × 3 factorial arrangement (CLA inclusion × egg storage time). At the end of each storage period, 30 eggs per dietary treatment were sampled to analyse yolk and albumen height, percentage and pH, yolk:albumen ratio, yolk diameter and index, Haugh unit (HU), yolk lipid oxidation, acidity and fatty acid profile. Key results The progression of storage negatively affected the internal quality of the eggs; however, inclusion of CLA minimised these effects up to Day 6, especially for yolk diameter, HU, height and albumen pH. The total lipid content was not affected by the dietary treatments; however, CLA inclusion resulted in a higher proportion of stearic acid and a lower concentration of linoleic acid in yolks. Conclusions The changes observed in fatty acid profile of the eggs may have favoured the reduction of lipid oxidation, as shown by the decrease in the acidity index and thiobarbituric acid-reactive substance (TBARS) values at shorter storage periods. Implications The dietary addition of CLA to broiler breeders may be used to preserve the egg internal quality during a short-term storage period.
The comprehensive effect of copper oxide nanoparticles on the physiology of the diatom microalga Thalassiosira weissflogii
Authors: Shoman Natalia , Solomonova Ekaterina , Akimov Arkady , Rylkova Olga , Meger Yakov 
Published: June 2023

The high rate of production and use of copper oxide nanoparticles (CuO NPs) results in its accumulation in the environment. However, the effect of large quantities of CuO NPs on aquatic ecosystems is not fully known. In aquatic ecosystems, phytoplankton is the primary producer of organic matter and the basis of all the trophic interactions; accordingly, the potential effect of CuO NPs on the microalgae community is of great concern. This study established the main patterns of changes in morphological, structural, functional, fluorescent and cytometric parameters in the marine diatom Thalassiosira weissflogii after adding CuO NPs to the medium at concentrations of 250–2500 μg L−1. As shown, the investigated pollutant has cytotoxic, genotoxic and mechanical effect on the microalga covering almost all the aspects of cell functioning. A two-fold decrease in the culture abundance relative to the control is observed at the toxicant content of 550 μg L−1 in the medium. At CuO NPs content above 750 μg L−1, a pronounced inhibition of the alga growth is recorded, as well as a decrease in the efficiency of its photosynthetic apparatus, a disturbance of membrane integrity, an increase in cell volume, a rise in abundance of dead/inactive cells in the culture, enlargement and deformation of nuclei, an increase in reactive oxygen species production, and depolarisation of the mitochondrial membrane. Our results show that high CuO NPs concentrations in water can cause serious disruptions in phytoplankton functioning and in equilibrium of aquatic ecosystems in general.
The effects of cycloastragenol on bovine embryo development, implantation potential and telomerase activity
Authors: Khan Abdul Majid , Idrees Muhammad , Perera Chalani Dilshani , Haider Zaheer , Joo Myeong-Don , Kang Ji-Su , Lee Seo-Hyeon , Kong Il-Keun 
Published: June 2023

Context Telomerase reverse transcriptase is a key factor responsible for structural and cellular alterations in aged oocytes and changes in the structure of the zona pellucida and mitochondria. Telomerase expression is reduced in aged cumulus oocyte complexes, and its activation or enhanced expression would be beneficial for in vitro oocyte maturation and in vitro embryo development. Aims This study aimed to investigate telomerase activation by cycloastragenol and its effect on bovine oocyte in vitro maturation, fertilisation, and early embryo development. Methods We used qPCR, Western blot, immunofluorescence, reactive oxygen species (ROS) assay,TUNEL assay, JC-1 assay, and invasion assay to analyse the affect of cycloastragenol (CAG) on bovine oocyte maturation, embryo development, embryo quality and implantation potential. Key results Cycloastragenol treatment of oocytes in in vitro maturation (IVM) media significantly (P < 0.05) improved oocyte IVM (90.87%), embryo cleavage (90.78%), blastocyst hatching (27.04%), and embryo implantation potential. Telomerase also interacts with mitochondria, and JC-1 staining results showed significantly (P < 0.05) higher mitochondrial membrane potential (ΔΨm) in the CAG-treated group. Furthermore, the inner cell mass (OCT4 and SOX2) and trophoblasts (CDX2) of the control and CAG groups were examined. Moreover, CAG treatment to primary cultured bovine cumulus cells substantially enhanced telomerase activity. Conclusions Telomerase activation via cycloastragenol is beneficial for bovine oocyte IVM and for the production of high-quality bovine embryos. Implications Cycloastragenol is a natural telomerase activator, and could be useful as a permanent component of oocyte maturation media.
Animals squawking their mysteries
Authors: Caracciolo Marco 
Published: June 2023

Abstract
Scholarship on literature’s engagement with the climate crisis has frequently highlighted the limitations of the
realist novel vis-à-vis the scale and wide-ranging ramifications of climate change. This article reads Laura Jean McKay’s
The Animals in That Country (2020) as a powerful example of how
the cross-fertilization of narrative and poetic forms can expand the imaginative reach of the novel. Through the plot device of a
pandemic that enables human-nonhuman communication, McKay’s novel explores the fragility of nonhuman life in a world shaped by the
violence of advanced capitalist societies. The poetic nature of the animals’ utterances complicates interpretation and draws
attention to the complexities of human-nonhuman entanglement, echoing – and performing through literary form – the ethical
position formulated by Deborah Bird Rose under the rubric of “ecological existentialism.”
Nearly optimal bounds for the global geometric landscape of phase retrieval
Authors: Cai Jian-Feng , Huang Meng , Li Dong , Wang Yang 
Published: June 2023

Abstract
The phase retrieval problem is concerned with recovering an unknown signal

x
∈

C

n

from a set of magnitude-only measurements

y
j

=
∣
⟨

a
j

,
x

⟩
∣
,
j
=
1
,
…
,
m

. A natural least squares formulation can be used to solve this problem efficiently even with random initialization, despite its non-convexity of the loss function. One way to explain this surprising phenomenon is the benign geometric landscape: (1) all local minimizers are global; and (2) the objective function has a negative curvature around each saddle point and local maximizer. In this paper, we show that

m
=
O
(
n
log
n
)

Gaussian random measurements are sufficient to guarantee the loss function of a commonly used estimator has such benign geometric landscape with high probability. This is a step toward answering the open problem given by Sun et al (2018 Found. Comput. Math.
18 1131–98), in which the authors suggest that

O
(
n
log
n
)

or even O(n) is enough to guarantee the favorable geometric property.
Surface effects on the spherical indentation of biological film/substrate structures
Authors: Ding Yue , Liang Xuan-Ming , Li Cheng-Ya , Wang Gang-Feng 
Published: June 2023

Abstract
Micro-/nano-indentation has been the most popular technique to extract the mechanical characteristics of biological cells and tissues. However, due to surface effects and the existence of substrates, conventional contact models are unable to determine the accurate elastic modulus of biological samples by analyzing the measured load-indent depth data. In this study, the spherical indentation of the film/substrate structure considering the surface energy and large deformations is investigated. The hyperelasticity of biological films and substrates is considered through neo-Hookean constitutive model, and the surface effect is incorporated using the finite element method. The explicit formulas for the relations between load and indent depth are presented for films with two orders of magnitude modulus mismatch to the substrate. It is found that the modulus mismatch between film and underlying substrate would lead to an overestimation of modulus for the film on a stiffer substrate, but an underestimated modulus for that on a softer substrate if the conventional Hertzian theory is directly adopted in the analysis. Moreover, for indentation at micro-/nano-scale, the surface energy would pronouncedly reduce the indent depth under a given load and lead to a seemingly stiffer film. Our results provide the explicit expressions to accurately predict the spherical indentation response of biological film/substrate structures.
Temporal afterglow between two pulses of repetitively pulsed argon-acetylene plasma: measuring electron and negatively charged species densities
Authors: Hasani M , Donders T J M , Beckers J 
Published: June 2023

Abstract
The temporal afterglow between two pulses of a repetitively pulsed radio-frequency driven low-pressure argon-acetylene plasma is experimentally explored using laser-induced photodetachment combined with microwave cavity resonance spectroscopy. The densities of electrons and negatively charged species, i.e. anions and dust particles, are measured temporally resolved until 1.9 s in the temporal plasma afterglow. Two different plasma-on times are adjusted to investigate the dynamics of anions and dust particles in the afterglow phase. The measurements show that while electrons decay rapidly within the first few milliseconds of the afterglow phase, the negatively charged species reside much longer in the plasma after the plasma is switched off. The electron density decay is measured to be faster for a longer plasma-on time. This effect is attributed to an enhanced recombination rate due to a higher dust particle density and/or size. The density of negatively charged species decays within two different timescales. The first 20 milliseconds of the afterglow is marked with a rapid decay in the negatively charged species density, in contrast with their slow density decay in the second time scale. Moreover, a residual of the negatively charged species densities is detected as long as 1.9 s after extinguishing the plasma.
A method for separating unmodeled errors in GNSS based on the constraint of the prior variance of unit weight
Authors: Yu Xianwen , Wang Jiafu 
Published: June 2023

Abstract
In global navigation satellite system (GNSS), unmodeled errors critically affect the accuracy and reliability of positioning solutions. When the unmodeled errors are significant in the mathematical model, they are mainly processed by choosing adjustment models with additional systematic error parameters or semiparametric estimation. However, many existing methods require knowledge of prior information on unmodeled errors; otherwise, achieving better processing results is difficult. To address this problem, this study proposes a GNSS unmodeled error separation method that does not rely on prior information on unmodeled errors. This method is based on the constraint of prior variance of unit weight. First, the method effectively separates the effect of unmodeled errors in the residuals under this constraint. Second, the initial estimate of the unmodeled errors in the observation domain is used as a virtual observation. Thus, the optimal estimate and variance of the unmodeled errors are obtained. Finally, the observations are effectively corrected by combining the concepts of mean shift and variance inflation. Multiple experiments were performed in this study. The results show that the proposed method can effectively weaken the impact of unmodeled errors on the float and fixed solutions of GNSS positioning, regardless of whether unmodeled errors exist in a single observation or multiple observations.
Hydrothermal synthesis and formation mechanism of controllable magnesium silicate nanotubes derived from coal fly ash
Authors: Gong Yanbing , Chen Muyang , Zhang Yongfeng , Wu Liying 
Published: June 2023

Abstract
A novel controllable magnesium silicate nanotube (MSN) material derived from coal fly ash was successfully synthesized via a hydrothermal process for the first time, and the reaction conditions and mechanism of synthesizing MSN materials from magnesium oxide and sodium silicate extracted from the fly ash were studied. The optimal preparation conditions are temperature = 220 °C, pH = 13.5, and Mg: Si molar ratio = 3:2, and the tubular structure gradually appeared and showed controllable and regular growth with the increase of synthesis time. The mechanism revealed that with the gradual dissolution of brucite into the sodium silicate solution, the reaction product begins to crystallize and transform from an initial sheet-like structure to a tubular structure, and finally becomes a uniformly arranged nanotube. The formation process of MSN follows Pauling’s fourth rule, Si–O tetrahedral coordination and Mg–OH octahedral coordination is further condensed to form a two-layer structure by the action of active oxygen, then the sheet is rolled into a tube under its structural stress. The growth of both outer tubular diameter and inner tubular diameter has good linear law and controllable, and the growth rate are 0.289 nm h−1 and 0.071 nm h−1, respectively.
Collective excitations of a charged Fermi superfluid in the BCS-BEC crossover
Authors: Klimin S N , Tempere J , Repplinger T , Kurkjian H 
Published: June 2023

Abstract
We consider collective excitations in the superfluid state of Fermi condensed charged gases. The dispersion and damping of collective excitations at nonzero temperatures are examined, and the coexistence and interaction of different branches of collective excitations: plasma oscillations, pair-breaking Higgs modes, and Carlson–Goldman phonon-like excitations are taken into account. The path integral methods for superfluid Fermi gases and for Coulomb gas are combined into a unified formalism that extends the Gaussian fluctuation approximation to account for plasmonic modes. This approximation of Gaussian pair and density fluctuations is able to describe all branches of collective excitations existing in a charged superfluid. The spectra of collective excitations are determined in two ways: from the spectral functions and from the complex poles of the fluctuation propagator. A resonant avoided crossing of different modes is shown. It is accompanied by resonant enhancement of the response provided by the pair-breaking modes due to their interaction with plasma oscillations. This may facilitate the experimental observation of the pair-breaking modes.
In-vitro anticancer and anti-migration effect of Ficus racemosa leaves extract and its neoadjuvant combination with chemo-photodynamic therapy
Authors: Aziz Bushra , Ahmat Lubna , Khurshid Ahmat , Khan Junaid Ahmad , Alam Masroor , Ikram Masroor 
Published: June 2023

Abstract
Phytocompounds play a key role in prevention and treatment of cancers. The secondary metabolites are being studied due to their anticancer and antioxidant properties leading to the finding of new therapeutic agents. Like many medicinal plants, Ficus racemosa (FR) is rich in polyphenols and can be used in cancer treatment. The side effects of existing therapeutic modalities at high doses may be reduced in combination. In this study the anticancer and anti-migration potentials of FR were evaluated, along with its combinational study at low therapeutic dosage with doxorubicin-HCl (Dox-HCl), dacarbazine (DTIC) and photodynamic therapy (PDT). The effects of FR leaves extract on the rhabdomyosarcoma (RD) cells morphology, cell viability, and cell migration ability were investigated by light microscopy, MTT assay, and wound healing cell migration assay respectively. The effect of various FR concentrations on RD cells indicated the potential anticancer effect in a dose dependent manner. The results of low dose di-combinations (FR-chemo, FR-PDT) and tri-combinations (FR-chemo-PDT) were synergistic. The % cell viability was reduced to 29% for FR-Dox-HCl-PDT and 44% for FR-DTIC-PDT combinations. A pronounced cytotoxic effect and cell migration was observed in tri-combination therapy as compared to di- and mono-therapy. This study concluded that FR leaves extract has anticancer effects and gives synergy with chemo and PDT combinations.
Glider Network Observation Unraveling A Cyclonic Eddy in the Northwestern Pacific Subtropical Countercurrent
Authors: Jiang Feng , Zhou Muping , Zhou Feng , Hu Zhentao 
Published: June 2023

Abstract
The North Pacific Subtropical Countercurrent (STCC) is a zonal current consisting of a weak eastward current near the surface and a westward current (north equatorial current, NEC) below. Previous studies have proved that this region is an extremely active region of the North Pacific eddy. The activity of mesoscale eddy in this region can directly or indirectly affect the periodic variations of the Kuroshio and the Chinese coastal waters. In order to study the structure of mesoscale eddies in this region and their impact on the upper ocean, five Petrel-II underwater gliders were conducted as a network to collect hydrographic properties from December 09 2020 to February 05, 2021. It is found that a cyclonic eddy passed through the glider network from east to west during the observation period, and the glider grid almost covers the whole eddy. The radius, amplitude and propagation velocity of the eddy were analyzed. The underwater gliders were equipped with CTD sensors, collected about 1200 full thermohaline profiles. The observation results indicated that the cyclonic eddy can influence over 400 m in the vertical, which caused the isotherm rising up to 40 m. Analysis based on satellite sea surface temperature (SST) and sea level anomaly (SLA) data suggest that the cyclonic eddy is probably locally generated.
A Ship Monitoring Framework Based on Multimodal Remote Sensing Data
Authors: Yin Z Y , Tang Y Q , Chen Y Z , Zhang Y Y 
Published: June 2023

Abstract
Due to the wide monitoring range, remote sensing satellites have more advantages than ground monitoring in large-scale monitoring. In particular, satellite network observations make rapid and frequent ground monitoring possible. In this paper, an all-day and all-weather marine ship monitoring framework based on multimodal remote sensing data was established. Scene recognition method was first used to segment sea areas. Then, we analyzed the ship characteristics of different data and used them for ship detection. Finally, the motion state of the ship was judged and the dynamic ships in the video were tracked. To prove the proposed framework, the data of Sentinel-1/2 and Jilin-1 data were used for verification. The experimental results demonstrated the advantages of the proposed framework for ship monitoring, which achieved the purpose of ship detection and tracking.
Ecological Vulnerability and Ecological Risk Assessment of Shanghai Section of Hangzhou Bay North Shore
Authors: Guo Yutong , Zhang Ren , Wang Yangjun , Yan Hengqian , Liu Quanhong , Xu Jing 
Published: June 2023

Abstract
Vulnerability research and ecological risk assessment of coastal ecological environment are of great significance for the temporal and spatial evolution process and trend of coastal zone. In this paper, using the 4-phase GF-1 remote sensing data, the landscape fragility index and landscape artificial disturbance intensity index of the Shanghai section of the north bank of Hangzhou Bay are calculated, and the temporal and spatial variation characteristics and the response to human activities are analyzed. The prediction based on Kalman filtering is used. The area of the landscape vulnerability level of the Shanghai section of the north shore of Hangzhou Bay in 2022. The results show that: (1) The lower fragile area is the dominant type of vulnerable area between 2013 and 2016, and the low-vulnerable area rises to the dominant type in 2016-2018, and the area of higher and high vulnerable areas is on the rise, and the vulnerable areas in 2018-2019 The change is slower than the previous stage. High-level vulnerable areas continue to spread, mainly from urban to suburban, inland to coastal, land to port. (2) The landscape change in the study area has a significant response to human activities, and there is a significant positive correlation between landscape fragility and landscape artificial disturbance intensity. (3) Based on the Kalman filter method, the results of predicting the level of vulnerable areas in each landscape in 2022 show that the area of the low vulnerability level area and the higher vulnerability level area has increased from the previous moment, and the lower vulnerability level area and The area of the medium vulnerability level has increased from the previous moment, and the area of the high vulnerability level has increased from 2018, which is lower than that in 2019.
Application of Hydro-morphodynamic Modelling in Coastal Salt Marsh Management
Authors: Chen Z. P. , Dai J. C. , Zeng J. W. , Li R. J. 
Published: June 2023

Abstract
Salt marshes are widespread in estuarine coastal areas and are one of the most productive natural ecosystems in the world. More importantly, the role of salt marshes in coastal protection is of increasing interest, as salt marshes significantly reduce wave height and stabilize substrates. However, the application of hydrodynamic models for coastal salt marsh management is still uncommon. In this study, TELEMAC is used to set up a hydro-morphodynamic model to simulate the dynamic process in the study area. After that, the influence of hydrodynamic stress on the salt marshes under natural conditions was analysed and the feasibility of applying artificial structures to restore salt marshes was discussed. Finally, the long-term evolution of salt marsh platform is modelled. The results show that salt marsh vegetation is strongly influenced by coastal dynamics. The artificial restoration measures such as submerged dikes have the potential to restore or rehabilitate salt marshes by attenuating the currents on tidal flats. The long-term marsh evolution contains both platform raising and channel incision, which forms the unique landscape of tidal salt marsh. The research results of the study can provide theoretical support for the management and restoration of coastal salt marsh wetlands and contribute to disaster prevention and mitigation in the coastal areas.