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Arctic sea-ice extent: No record minimum in 2023 or recent years

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 52-55页

作者： Ola m.Johannessen Tor I.Olaussen Nansen Scientific Society BergenNorway Nansen Environmental and Remote Sensing Center BergenNorway

Arctic sea-ice extent reaches its minimum each year in September. On 11 September 2023 the minimum was 4.969 million square kilometers(***^(2)). This was not a record low, which occurred in 2012, when the minimum was 4.175 ***^(2), 0.794 ***^(2) less than the minimum in 2023. However, the ice extent had decreased by 0.432 ***^(2) compared with 2022. Nevertheless, the summer melting in 2023 was remarkably less than expected when considering the strong heat waves in the atmosphere and ocean, with record temperatures set around the world. In general, there is a high correlation between the long-term decrease in sea-ice extent and the increasing CO_(2) in the atmosphere, where the increase of CO_(2) in recent decades explains about 80% of the decrease in sea ice in September, while the remainder is caused by natural variability.

关键词： Sea ice Arctic minimum ice Climate

Cobalt(Ⅱ) chloride accelerated one-pot three-component synthesis of α-aminophosphonates at room temperature

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Chinese Chemical Letters 2011年第5期22卷 559-562页

作者： Zahed Karimi-Jaberi Hassan Zare mohammad amiri Naghmeh Sadeghi Department of Chemistry Islamic Azad UniversityFiroozabad BranchP.O.Box 74715-117FiroozabadFarsIran

A simple,efficient,and general method has been developed for the one-pot,three-component synthesis ofα-aminophosphonates from condensation reaction of trimethyl phosphite,aryl aldehydes and aryl amines in the presence of CoCl_2-6H_2O under solvent-free ***α-aminophosphonates were synthesized relatively quickly in good yields at room temperature.

关键词： α-Aminophosphonates Cobalt(Ⅱ) chloride Trimethyl phosphite Room temperature Solvent-free

Insights from an academic endeavor into central nervous system drug discovery

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Neural Regeneration Research 2025年第6期20卷 1717-1718页

作者： Lieve van veggel An m.voets Tim vanmierlo Rudy Schreiber BIOmED Biomedical Research Institute Faculty of Medicine and Life SciencesHasselt UniversityHasseltBelgium Department of Psychiatry and Neuropsychology Division of Translational NeuroscienceEuropean Graduate School of NeuroscienceSchool for Mental Health and NeuroscienceMaastricht UniversityMaastrichtThe Netherlands Section of Psychopharmacology Neuropsychology and PsychopharmacologyFaculty of Psychology and NeuroscienceMaastricht UniversityMaastrichtThe Netherlands University mS Center(UmSC) Hasselt-PeltBelgium

Historically,"big pharma"did most central nervous system drug discovery R&D ***,in modern times their"management reductionism"resulted in disappointing pipelines and pharma resided to(late)development,regulatory approval,and marketing(Thong,2015).This had significant consequences for financing and executing research,resulting in a larger role for funding by governments and patient-organizations and a shift of research to academia(mazzucato,2013).

关键词： academic approval consequences

Provenance, Tectonic Setting and Geochemistry of Ahwaz Sandstone member(Asmari Formation, Oligo-miocene), marun Oilfield, Zagros Basin, SW Iran

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Acta Geologica Sinica(English Edition) 2014年第3期88卷 931-948页

作者： Shahram AvARJANI Asadollah mAHBOUBI Reza mOUSSAvI-HARAmI Hassan amiri-BAKHTIAR Department of Geology Faculty of Science Ferdowsi University of MashhadIran Department of Geology National Iranian south Oil CompanyIran

The Asmari Formation deposited in the Zagros foreland basin during the ***,the Asmari Formation consists of limestone,dolomitic limestone,dolomite,argillaceous limestone,some anhydrite （Kalhur member） and sandstones （Ahwaz member）.This study is based on the analysis of core samples from four subsurface sections （wells mn-68,mn-281,mn-292 and mn-312） in the marun Oilfieid in the Dezful embayment subzone in order to infer their provenance and tectonic setting of the Ahwaz Sandstone *** data reveal that the Ahwaz Sandstone comprises 97.5% quartz,1.6% feldspar,and 0.9% rock fragments and all samples are classified as quartz *** provenance and tectonic setting of the Ahwaz Sandstone have been assessed using integrated petrographic and geochemical *** analysis reveals that mono-and poly-crystalline quartz grains from metamorphic and igneous rocks of a craton interior setting were the dominant ***,major and trace element concentrations in the rocks of the Ahwaz Sandstone indicate deposition in a passive continental margin *** indicated by the CIW index （chemical index of weathering） of the Ahwaz Sandstone （average value of 82） their source area underwent ＂intense＂ recycling but ＂moderate to high＂ degree of chemical *** petrography and geochemistry results are consistent with a tropical,humid climate and low-relief highlands.

关键词： Asmari Formation Dezful Embayment provenance tectonic setting sandstone,geochemistry Ahwaz Sandstone member

Neurocircuit regeneration by extracellular matrix reprogramming

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Neural Regeneration Research 2025年第8期20卷 2300-2301页

作者： Shengzhang Su Ian N.Levasseur Kimberly m.Alonge Department of medicinal Chemistry University of WashingtonSeattleWAUSA Department of Chemistry University of WashingtonSeattleWAUSA Department of medicine University of Washington Medicine Diabetes InstituteSeattleWAUSA

The brain's extracellular matrix(ECm),which is comprised of protein and glycosaminoglycan(GAG)scaffolds,constitutes 20%-40% of the human brain and is considered one of the largest influencers on brain cell functioning(Soles et al.,2023).Synthesized by neural and glial cells,the brain's ECm regulates a myriad of homeostatic cellular processes,including neuronal plasticity and firing(miyata et al.,2012),cation buffering(moraws ki et al.,2015),and glia-neuron interactions(Anderson et al.,2016).Considering the diversity of functions,dynamic remodeling of the brain's ECm indicates that this understudied medium is an active participant in both normal physiology and neurological diseases.

关键词： matrix programming

Barriers to big data analytics (BDA) implementation in manufacturing supply chains

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Journal of management Analytics 2023年第1期10卷 191-222页

作者： Amirhossein Dehkhodaei Bahar amiri Hasan Farsijani Abbas Raad Department of management and Accounting Shahid Beheshti UniversityTehranIran

Big data analysis(BDA)can increase the capability of supply chain analysis of manufacturing ***,many manufacturing companies want to use BDA,but it has been seen that BDA implementation is difficult,especially in developing countries due to the existence of various barriers related to finance,government regulations,*** paper aims to investigate the barriers to BDA implementation in Iranian *** literature,limited work has been done on identifying barriers to implementing BDA in developing *** this regard,34 barriers were identified to BDA adoption in Iran by employing a literature review and feedback received from ***,the most important barriers(14)were analyzed using integrated Interpretive Structural modeling and mICmAC *** show that two barriers;namely,lack of sufficient knowledge of senior managers and weakness of governance policies,are the most ***,crucial policy measures and recommendations are proposed to assist managers and government bodies.

关键词： Barriers Big data analytics Interpretive Structural modeling(ISm) mICmAC Analysis modeling Supply Chain management

A control volume based finite element method for simulating incompressible two-phase flow in heterogeneous porous media and its application to reservoir engineering

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Petroleum Science 2012年第4期9卷 485-497页

作者： SADRNEJAD S A GHASEmZADEH H GHOREISHIAN amiri S A mONTAZERI G H Faculty of Civil Engineering K.N.Toosi University of Technology Research and Development Department Iranian Central Oil Field Co.

Applying the standard Galerkin finite element method for solving flow problems in porous media encounters some difficulties such as numerical oscillation at the shock front and discontinuity of the velocity field on element *** of velocity field leads this method not to conserve mass ***,the accuracy and stability of a solution is highly affected by a non-conservative *** this paper,a three dimensional control volume finite element method is developed for twophase fluid flow simulation which overcomes the deficiency of the standard finite element method,and attains high-orders of accuracy at a reasonable computational ***,this method is capable of handling heterogeneity in a very rational way.A fully implicit scheme is applied to temporal discretization of the governing equations to achieve an unconditionally stable *** accuracy and efficiency of the method are verified by simulating some waterflooding *** representative examples are presented to illustrate the capability of the method to simulate two-phase fluid flow in heterogeneous porous media.

关键词： Finite element method control volume two-phase flow heterogeneity porous media waterflooding

Transport mechanism in chemically reactive hybrid nanofluid flow containing gyrotactic micro-organisms over a curved oscillatory surface

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Applied mathematics and mechanics(English Edition) 2025年第1期46卷 177-192页

作者： m.NAvEED m.ImRAN T.ASGHAR Z.ABBAS Department of mathematics Division of Science and TechnologyUniversity of Education Department of mathematics The Islamia University of Bahawalpur

This paper examines the transport analysis, including both heat transfer and mass transfer, in hybrid nanofluid flow containing gyrotactic microorganisms towards a curved oscillatory surface. The influence of magnetic fields is also inspected in terms of their physical characteristics. To depict the phenomena of transport, modified versions of both Fick's and Fourier's laws are used. Additionally, the characteristics of both heterogeneous and homogeneous chemical reactions are also incorporated. Utilizing a curvilinear coordinate system, the flow problem is formulated as partial differential equations(PDEs)for momentum, concentration, microorganism field, and energy. An analytical solution to the obtained flow equations is achieved utilizing the homotopy analysis method(HAm).The effects of significant flow parameters on the pressure and microorganism fields, velocity, oscillation velocity, concentration, and temperature distributions are shown via graphs. Furthermore, the variations in skin friction, mass transfer rate, heat transfer rate, and local motile number due to different involved parameters are presented in tables and are analyzed in detail. Graphical results indicate that the curves of velocity and temperature fields are enhanced as the values of the solid volume fraction variables *** is also verified that the concentration rate field decreases as the values of the homogeneous reaction strength parameter and the radius of curvature parameter increase, and it increases with the Schmidt number and the heterogeneous reaction strength *** outcomes show a favorable response of the motile number to advanced values of the Peclet number, the Schmidt number, the microorganism difference parameter, and the bio-convective Lewis number.

关键词： Peclet number

Application of control volume based finite element method for solving the black-oil fluid equations

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Petroleum Science 2013年第3期10卷 361-372页

作者： GHOREISHIAN amiri S A SADRNEJAD S A GHASEmZADEH H mONTAZERI G H Faculty of Civil Engineering K. N. Toosi University of TechnologyTehran Iran Research and Development Dept. Iranian Central Oil Field Co.Tehran Iran

This is the second paper of a series where we introduce a control volume based finite element method （CvFEm） to simulate multiphase flow in porous media. This is a fully conservative method able to deal with unstructured grids which can be used for representing any complexity of reservoir geometry and its geological objects in an accurate and efficient manner. In order to deal with the inherent heterogeneity of the reservoirs, all operations related to discretization are performed at the element level in a manner similar to classical finite element method （FEm）. moreover, the proposed method can effectively reduce the so-called grid orientation effects. In the first paper of this series, we presented this method and its application for incompressible and immiscible two-phase flow simulation in homogeneous and heterogeneous porous media. In this paper, we evaluate the capability of the method in the solution of highly nonlinear and coupled partial differential equations by simulating hydrocarbon reservoirs using the black-oil model. Furthermore, the effect of grid orientation is investigated by simulating a benchmark waterflooding problem. The numerical results show that the formulation presented here is efficient and accurate for solving the bubble point and three-phase coning problems.

关键词： Control volume based finite element,black-oil model grid orientation porous media