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Dibutyl phthalate disrupts[Ca^(2+)]_(i),reactive oxygen species,[pH]_(i),protein kinases and mitochondrial activity,impairing sperm function

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Journal of Environmental Sciences 2025年第5期151卷 68-78页

作者： Seung Hyun Park Myung chan Gye Department of Life Science and Institute for Natural Sciences Hanyang UniversitySeoul 04763Republic of Korea

To explore the mechanism of sperm dysfunction caused by dibutyl phthalate(DBP),the effects of DBP on intracellular[Ca^(2+)]and[pH],reactive oxygen species(ROS),lipid peroxidation(LPO),mitochondrial permeability transition pore(mPTP)opening,mitochondrial membrane potential(MMP),adenosine triphosphate(ATP)levels,phosphorylation of protein kinase A(PKA)substrate proteins and phosphotyrosine(p-Tyr)proteins,sperm motility,spontaneous acrosome reaction,and tail bending were examined in mouse *** 100μg/mL,DBP significantly increased tail bending and[Ca^(2+)]***,DBP showed biphasic effects on[pH]*** at 10–100μg/mL significantly decreased sperm ***,Ca^(2+)ionophore A23187 decreased[pH]_(i)sperm motility,suggesting that DBP-induced excessive[Ca^(2+)]_(i)decreased sperm *** significantly increased ROS and *** at 100μg/mL significantly decreased mPTP closing,MMP,and ATP levels in spermatozoa,as did H2O2,indicative of ROS-mediatedmitochondrial dysfunction caused by *** as well as H2O2 increased p-Tyr sperm proteins and phosphorylated PKA substrate sperm *** at 1–10μg/mL significantly increased the spontaneous acrosome reaction,suggesting that DBP can activate sperm ***,DBP showed a biphasic effect on intracellular signaling in *** concentrations relevant to seminal ortho-phthalate levels,DBP activates[pH]i,protein tyrosine kinases and PKA via physiological levels of ROS generation,potentiating sperm *** at high doses excessively raises[Ca^(2+)]_(i)and ROS and disrupts[pH]i,impairing the mitochondrial function,tail structural integrity,and sperm motility.

关键词： Dibutyl phthalate Reactive oxygen species(ROS) [Ca^(2+)]_(i) [pH]_(i) Mitochondria Protein kinases Sperm

Relativistic two-fluid hydrodynamics with quantized vorticity from the nonlinear Klein–Gordon equation

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Communications in Theoretical Physics 2025年第2期77卷 161-171页

作者： chi Xiong Kerson Huang Minjiang Collaborative Center for Theoretical Physics Minjiang University Institute of Advanced Studies & School of Physical and Mathematical Science Nanyang Technological University Physics Department Massachusetts Institute of Technology Cambridge

We consider a relativistic two-fluid model of superfluidity, in which the superfluid is described by an order parameter that is a complex scalar field satisfying the nonlinear Klein–Gordon equation(NLKG). The coupling to the normal fluid is introduced via a covariant current–current interaction, which results in the addition of an effective potential, whose imaginary part describes particle transfer between superfluid and normal fluid. Quantized vorticity arises in a class of singular solutions and the related vortex dynamics is incorporated in the modified NLKG,facilitating numerical analysis which is usually very complicated in the phenomenology of vortex filaments. The dual transformation to a string theory description(Kalb–Ramond) of quantum vorticity, the Magnus force, and the mutual friction between quantized vortices and normal fluid are also studied.

关键词： relativistic superfluidity nonlinear Klein-Gordon field theory quantized vortices two-fluid model Kalb-Ramond field global string

Molecular dynamics simulations of helium transport through inorganic mineral nanopores

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Science china Earth Sciences 2025年第1期68卷 237-252页

作者： Dandan SONG Ping GUAN chi ZHANG Jiahao REN School of Earth and Space Sciences Peking UniversityBeijing100871China

Helium transport through nanoscale inorganic mineral pores and pore throats is essential for its overall *** elucidate helium's transport dynamics within nanopores,we employed equilibrium and non-equilibrium molecular dynamics simulations to investigate helium's static self-diffusion and pressure-driven flow in quartz slit-shaped *** also introduced water and various gases,including hydrogen,methane,ethane,nitrogen,and carbon dioxide,into the nanopores to assess their influence on helium *** findings indicate minimal helium adsorption on quartz pore *** conditions where the pore size is less than 5 nm and the pressure under 10 MPa,environmental factors markedly influence helium *** pore sizes,high temperatures,and low gas pressures enhance helium desorption and facilitate faster *** observed a positive correlation between helium flow velocity and factors such as pore size,pressure gradient,and surface smoothness of the ***,the presence of pore water and carrier gases in quartz nanopores,which diffuse more slowly than helium,tends to reduce helium surface adsorption and slow its *** the carrier gases studied,nitrogen showed similar adsorption capacity,diffusivity,and stability to helium,while carbon dioxide displayed the highest adsorption capacity and the slowest diffusion rate,markedly differing from *** on the simulation results,we concluded that water and carrier gases primarily function as transport mediums in helium migration,moving together with ***,which shares similar properties with helium,effectively assists in this co-migration ***,carbon dioxide,due to its high adsorption capacity and slow diffusion,tends to be lost during *** a result,gas reservoirs with high nitrogen levels and low carbon dioxide levels are more likely to have higher helium ***,the smaller pore sizes and higher gas pressures in caproc

关键词： Helium transport Slit nanopores Molecular dynamics simulations Diffusion Flow carriers

Sporadic E responds to the 2022 Tonga volcano eruptions recorded by the Meridian Project

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Earth and Planetary Physics 2025年第1期9卷 20-28页

作者： YangYi Sun Tao Yu Jin Wang chi Long School of Geophysics and Geomatics China University of Geosciences(Wuhan)Wuhan 430047China School of Physics and Electronic Science Guizhou Normal UniversityGuizhou 550001China

In this study,ionosonde observations over Fuke(19.5°N,109.1°E),Wuhan(30.5°N,114.4°E),and Mohe(53.5°N,122.3°E)were analyzed to demonstrate the responses of the sporadic E()to the severe atmospheric disturbances caused by the Tonga volcanic eruptions on January 15,*** most prominent signature was the disappearance of the layer after~10:00 UT over Wuhan and Fuke,which was attributed to the vertical drift caused by the *** occurred intermittently after 13:00 UT following the arrival of the tropospheric Lamb *** examine the causal mechanism for the intermittence,we also included data of horizontal winds in the mesosphere and lower thermosphere region recorded by the meteor radars at Wuhan and Mohe in this *** wind disturbances with periods of~20 hours contributed to the formation of the layer in the nighttime on January 15.

关键词： sporadic E Tonga eruptions neutral wind disturbances

Adaptive optimal control system design for semi-active suspension system by supposing variable parameters under exogenous road disturbance

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CONTROL THEORY AND TECHNOLOGY 2025年第1期23卷 64-73页

作者： Hoang, Viet Nguyen Deng, Feiqi Van, chi Nguyen South china Univ Technol Sch Automat Sci & Engn Guangzhou 510640 Guangdong Peoples R China Thai Nguyen Univ Technol Thai Nguyen City Vietnam

This article presents an adaptive optimal control method for a semi-active suspension system. The model of the suspension system is built, in which the components of uncertain parameters and exogenous disturbance are described. The adaptive optimal control law consists of the sum of the optimal control component and the adaptive control component. First, the optimal control law is designed for the model of the suspension system after ignoring the components of uncertain parameters and exogenous disturbance caused by the road surface. The optimal control law expresses the desired dynamic characteristics of the suspension system. Next, the adaptive component is designed with the purpose of compensating for the effects caused by uncertain parameters and exogenous disturbance caused by the road surface;the adaptive component has adaptive parameter rules to estimate uncertain parameters and exogenous disturbance. When exogenous disturbances are eliminated, the system responds with an optimal controller designed. By separating theoretically the dynamic of a semi-active suspension system, this solution allows the design of two separate controllers easily and has reduced the computational burden and the use of too many tools, thus allowing for more convenient hardware implementation. The simulation results also show the effectiveness of damping oscillations of the proposed solution in this article.

关键词： Quarter car suspension system Semi-active suspension Adaptive control Optimal control Linear-quadratic regulator Exogenous disturbance

Extraordinary synergy on 3D hierarchical porous Co-Cu nanocomposite for catalytic elimination of VOCs at low temperature and high space velocity

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Journal of Environmental Sciences 2025年第5期151卷 714-732页

作者： Jinyan Xiao chi Zhang Lei Yang Shengwei Tang Wenxiang Tang School of Chemical Engineering Sichuan UniversityChengdu 610065China

It is still a challenge to develop hierarchically nanostructured catalysts with simple approaches to enhance the low-temperature catalytic ***,a set of mesoporous Co-Cu binary metal oxides with different morphologies were successfully prepared via a facile ammonium bicarbonate precipitation method without any templates or surfactants,which were further applied for catalytic removal of carcinogenic *** the catalysts with different ratios,the CoCu_(0.2)composite oxide presented the best performance,where the temperature required for 90%conversion of toluene was only 237°C at the high weight hour space velocity(WHSV)of 240,000 mL/(gcat·hr).Meanwhile,compared to the related Co-Cu composite oxides prepared by using different precipitants(NaOH and H_(2)C_(2)O_(4)),the NH_(4)HCO_(3)-derived CoCu_(0.2)sample exhibited better catalytic efficiency in toluene oxidation,while the T90 were 22 and 28°C lower than those samples prepared by NaOH andH_(2)C_(2)O_(4)routes,*** on various characterizations,it could be deduced that the excellent performance was related to the small crystal size(6.7 nm),large specific surface area(77.0 m2/g),hollow hierarchical nanostructure with abundant high valence Co ions and adsorbed oxygen *** situ DRIFTS further revealed that the possible reaction pathway for the toluene oxidation over CoCu_(0.2)catalyst followed the route of absorbed toluene→benzyl alcohol→benzaldehyde→benzoic acid→carbonate→CO_(2)and H_(2)*** addition,CoCu_(0.2)sample could keep stable with long-time operation and occur little inactivation under humid condition(5 vol.%water),which revealed that the NH_(4)HCO_(3)-derived CoCu_(0.2)nanocatalyst possessed great potential in industrial applications for VOCs abatement.

关键词： Toluene oxidation Co-Cu composite Synergistic effect Hollow hierarchical nanostructure Precipitation method

Using fracture mechanics method to analyze the failure mechanism and equilibrium equation of interfacial loess-mudstone landslides

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Journal of Mountain Science 2025年第1期22卷 156-166页

作者： LI Shuanhu LI chi GAO Yu Key Laboratory of Geological Hazards and Geotechnical Engineering Defense in Sandy and Drought Regions at Universities of Inner Mongolia Autonomous Region Inner Mongolia University of TechnologyHohhot 010051China Inner Mongolia Engineering Research Center of Geological Technology and Geotechnical Engineering Inner Mongolia University of TechnologyHohhot 010051China College of Resource and Environmental Engineering Inner Mongolia University of TechnologyHohhot 010051China

Loess-mudstone landslides are common in the Loess *** into the mechanical theory of loess-mudstone landslides have become a challenging undertaking due to the distinctive interfacial properties of loess-mudstone and the unique water sensitivity characteristics of ***,it is imperative to develop innovative mechanical models and mathematical equations specifically tailored to loess-mudstone *** this study,we analyze the fracture mechanism of the loess-mudstone sliding zone using plastic fracture mechanics and develop a unique fracture yield *** calculate the energy release rate during the expansion of the loess-mudstone interface tip region,the shear fracture energy G is applied,which reflects both the yield failure criterion and the fracture failure *** better understand the instability mechanism of loess-mudstone landslides,equilibrium equations based on G are established for tractive,compressive,and tensile loess-mudstone *** on the equilibrium equation,the critical length Lc of the sliding zone can be used for the safety evaluation of loess-mudstone *** this way,this study proposes a new method for determining the failure mechanism and equilibrium equation of loessmudstone landslides,which resolves their starting mechanism,mechanical equilibrium equations,and safety evaluation indicators,thus justifying the scientific significance and practical value of this research.

关键词： Loess-mudstone landslide Failure mechanism Shear fracture energy Equilibrium equation Safety factor

Liver transplantation for hepatocellular carcinoma: Current status in Hong Kong, china

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Hepatobiliary & Pancreatic Diseases International 2025年第1期24卷 45-49页

作者： Karin Ho Albert chan Liver Transplant Center Queen Mary Hospital Department of SurgeryThe University of Hong Kong

With the advances in transplant oncology in recent years, the role of liver transplantation has expanded to make curative treatment a possibility for a wider patient population. We highlight strategies in Hong Kong, china that have enabled preoperative prognostication for judicious patient selection, downstaging therapy to definitive treatment, and postoperative therapies that have provided a growing role for liver transplantation in patients with more advanced hepatocellular carcinoma.

关键词： Living donor liver transplantation Downstaging Conversion therapy Transplant oncology

Enhanced battery life prediction with reduced data demand via semi-supervised representation learning

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Journal of Energy Chemistry 2025年第2期101卷 524-534页

作者： Liang Ma Jinpeng Tian Tieling Zhang Qinghua Guo chi Yung Chung School of Mechanical Materials Mechatronic and Biomedical Engineering University of Wollongong Department of Electrical and Electronic Engineering and Research Centre for Grid Modernisation The Hong Kong Polytechnic University Photonics Research Institute The Hong Kong Polytechnic University School of Electrical Computer and Telecommunications Engineering University of Wollongong

Accurate prediction of the remaining useful life(RUL) is crucial for the design and management of lithium-ion *** various machine learning models offer promising predictions,one critical but often overlooked challenge is their demand for considerable run-to-failure data for *** of such training data leads to prohibitive testing efforts as the run-to-failure tests can last for ***,we propose a semi-supervised representation learning method to enhance prediction accuracy by learning from data without RUL *** approach builds on a sophisticated deep neural network that comprises an encoder and three decoder heads to extract time-dependent representation features from short-term battery operating data regardless of the existence of RUL *** approach is validated using three datasets collected from 34 batteries operating under various conditions,encompassing over 19,900 charge and discharge *** method achieves a root mean squared error(RMSE)within 25 cycles,even when only 1/50 of the training dataset is labelled,representing a reduction of 48%compared to the conventional *** also demonstrate the method's robustness with varying numbers of labelled data and different weights assigned to the three decoder *** projection of extracted features in low space reveals that our method effectively learns degradation features from unlabelled *** approach highlights the promise of utilising semi-supervised learning to reduce the data demand for reliability monitoring of energy devices.

关键词： Lithium-ion batteries Battery degradation Remaining useful life Semi-supervised learning