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Exploring one material for dual applications:A red-emitting mg2GeO4:Eu3+ nanophosphor for future generation energy efficient WLEDs and dosimetric applications

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Journal of Rare Earths 2024年第10期42卷 1835-1845页

作者： Akshay Arjun G.P.Darshan S.C.Sharma h.Nagabhushana D.V.Sunitha h.B.Premkumar Department of Physics Faculty of Mathematical and Physical SciencesM.S.Ramaiah University of Applied Sciences Jain University C.N.R.Rao Centre for Advanced materials Tumkur University School of Applied Sciences (Physics) REVA University

The envisaged design and developme nt of individual mate rials to excavate a broader spectrum of desired properties and offer multiple applications are highly *** this in mind,a series of forsterite-structured mg2GeO4:Eu3+（1 mol%-9 mol%） nanophosphors was synthesized via a solution combustion method using oxalyl dihydrazide as a *** X-ray diffraction patterns confirm the orthorhombic crystal system with a Puma space *** results clearly show irregularly shaped cluster-like structures with aggregation of the *** diffuse reflectance spectra,the optical energy band gap of the mg2GeO4:Eu3+（1 mol%-9 mol%） nanophosphors was estimated and obtained to be～4.12-4.32 *** photoluminescence emission spectra exhibit intense peaks at ～579,589,610,661,and 707 nm,which are due to characteristic5D0→7F0,5D0→7F1,5Do→7F2,5D0→7F3and5D0→7F4transitions of Eu3+ions,*** Commission International de L'Eclairage color coordinates are gradually tuned from pale red（0.5980,0.4012） to a pure red（0.6385,0.3611） *** glow peaks showcase excellent super-linear response at low doses of γ-irradiations,indicating that the prepared phosphor can be used in thermoluminescent personal dosimetry which is a biological tissue *** aforementioned results demonstrate that the prepared mg2GeO4:Eu3+（1 mol%-9 mol%） nanophosphors are considered an excellent candidate for dual applications,i.e.,red component in future generation white-light-emitting diodes（WLEDs） and personal dosimetric applications.

关键词： Dosimetry Nanophosphors Photoluminescence Photometric properties Rare earths Thermoluminescence

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Fish-on-Chips:unveiling neural processing of chemicals in small animals through precise fluidic control

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Neural Regeneration Research 2024年第11期19卷 2351-2353页

作者： Samuel K.h.Sy ho Ko Division of Neurology Department of Medicine and TherapeuticsFaculty of MedicineThe Chinese University of Hong KongShatinNew TerritoriesHong Kong Special Administrative RegionChina Li Ka Shing Institute of health Sciences Faculty of MedicineThe Chinese University of Hong KongShatinNew TerritoriesHong Kong Special Administrative RegionChina Department of Electrical and Electronic Engineering Faculty of EngineeringThe University of Hong KongPok Fu LamHong Kong IslandHong Kong Special Administrative RegionChina Advanced Biomedical Instrumentation Center Hong Kong Science ParkPak Shek KokNew TerritoriesHong Kong Special Administrative RegionChina margaret K.L.Cheung Research Center for management of Parkinsonism Faculty of MedicineThe Chinese University of Hong KongShatinNew TerritoriesHong Kong Special Administrative RegionChina Lau Tat-chuen Research Center of Brain Degenerative Diseases in Chinese Faculty of MedicineThe Chinese University of Hong KongShatinNew TerritoriesHong Kong Special Administrative RegionChina Gerald Choa Neuroscience Institute The Chinese University of Hong KongShatinNew TerritoriesHong Kong Special Administrative RegionChina

Precise chemical cue presentation alongside advanced brainwide imaging techniques is important to the study of chemosensory processing in ***,the dynamic nature of chemical-carrying media,such as water or air,poses a significant challenge for delivering highly-controlled chemical flow to an animal ***,contact-based cue manipulation and delivery easily shift the position of the animal subject,which is often undesirable for high-quality brain ***,more advanced interfacing tools that align with the diverse range of body part sizes of an animal,ranging from micrometer-scale neurons to meter-long limbs,are much *** is particularly crucial when dealing with dimensions that are beyond the reach of conventional experimental tools.

关键词： dealing precise sizes

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Vanillylacetone attenuates cadmium chloride-induced hippocampal damage and memory loss through upregulation of nuclear factor erythroid 2-related factor 2 gene and protein expression

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Neural Regeneration Research 2024年第12期19卷 2750-2759页

作者： Fahaid h.A.L-hashem Salah O.Bashir Amal F.Dawood moutasem S.Aboonq Ismaeel Bin-Jaliah Abdulaiziz m.Al-Garni mohamed D.morsy Department of Physiology College of MedicineKing Khalid UniversityAbhaSaudi Arabia Department of Basic medical Sciences College of MedicinePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of Physiology College of MedicineTaibah UniversityAl-Madinah Al-MunawwarahSaudi Arabia Department of medicine College of MedicineKing Khalid UniversityAbhaSaudi Arabia

memory loss and dementia are major public health concerns with a substantial economic *** stress has been shown to play a crucial role in the pathophysiology of hippocampal damage-induced memory *** investigate whether the antioxidant and anti-inflammatory compound vanillyla cetone(zingerone) can protect against hippocampal damage and memory loss induced by cadmium chloride(CdCl_(2)) administration in rats,we explo red the potential involvement of the nuclear factor erythroid 2-related factor 2(Nrf2) signaling pathway,which is known to modulate oxidative stress and *** healt hy male Wistar rats were divided into five groups:vehicle-treated(control),vanillylacetone,CdCl_(2),vanillylacetone+ CdCl_(2),vanillylacetone+ CdCl_(2)+ brusatol(a selective pharmacological N rf2inhibitor) *** effectively attenuated CdCl_(2)-induced damage in the dental gyrus of the hippocampus and improved the memory function assessed by the morris Water maze ***,vanillylacetone markedly decreased the hippocampal tissue levels of inflammatory biomarkers(interleukin-6,tumor necrosis factor-α,intracellular cell adhesive molecules) and apoptosis biomarkers(Bax and cleaved caspase-3).The control and CdCl_(2)-treated groups treated with va nillylacetone showed reduced generation of reactive oxygen species,decreased malondialdehyde levels,and increased superoxide dismutase and glutathione activities,along with significant elevation of nuclear Nrf2 mRNA and protein expression in hippocampal *** the protective effects of vanillylacetone we re substantially blocked by the co-administration of brusatol(a selective N rf2 inhibitor).Va nillylacetone mitigated hippocampal damage and memory loss induced by CdCl_(2),at least in part, by activating the nuclear transcription factor ***,vanillylacetone exerted its potent antioxidant and antiinflammatory actions.

关键词： hippocampus neuroprotective Nrf2 gene oxidative stress vanillylacetone

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Seed Priming with Potassium Nitrate Can Enhance Salt Stress Tolerance in maize

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Phyton-International Journal of Experimental Botany 2024年第8期93卷 1819-1838页

作者： Bushra Rehman Asma Zulfiqar houneida Attia Rehana Sardar muneera A.Saleh Khalid h.Alamer Ibtisam m.Alsudays Faisal mehmood Qamar uz Zaman Institute of Botany University of the PunjabLahore54590Pakistan Department of Biology College of ScienceTaif UniversityTaif21944Saudi Arabia Department of Botany Emerson UniversityMultan60000Pakistan Biological Sciences Department Faculty of Science and ArtsKing Abdulaziz UniversityRabigh21911Saudi Arabia Department of Biology College of ScienceQassim UniversityBurydah52571Saudi Arabia Department of Chemistry Sciences The University of LahoreLahore54590Pakistan Department of Environmental Sciences The University of LahoreLahore54590Pakistan

Salinity is a major abiotic stress that hinders plant development and productivity and influences agricultural *** priming is a technique used to boost germination and seedling growth under abiotic stress.A pot experiment was conducted to evaluate the impact of seed priming with potassium nitrate(KNO_(3))at various levels(0%,0.50%,1.00%and 1.50%)under salt stress(0,75,100 mm NaCl)on two maize verities(mNh360 and 30T60)for the growth,development and metabolic attributes results revealed that in maize variety mNh360,KNO_(3)priming’s significantly enhanced growth parameters than in maize variety 30T60 under control and salt-stressed *** with KNO_(3)enhanced carotenoids and total chlorophyll in the 30T60 variety that protected the maize plants from salt ***,it was shown that priming with 1.00%KNO_(3)acts as safeguarded to protect them from oxidative damage by salt stress minimizing reactive oxygen species(ROS)formation through increased levels of malondialdehyde(mDA),catalase(CAT),peroxidase(POD),ascorbate peroxidase(APX),and total soluble *** findings of the present study confirm that the use of the KNO_(3)seed priming technique is a lowcost,environmentally friendly technique for mitigating adverse impacts of salt stress in maize crops by activating the antioxidant defense system and improving chlorophyll and osmolyte contents.

关键词： Salinity Zea mays antioxidant enzymes growth seedlings oxidative damage

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ALS-linked C9orf72 dipeptide repeats inhibit starvation-induced autophagy through modulating BCL2–BECN1 interaction

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Acta Pharmaceutica Sinica B 2024年第5期14卷 2026-2038页

作者： Shiqiang Xu Qilian ma Junwen Shen Ningning Li Shan Sun Nana Wang Yang Chen Chunsheng Dong Kin Yip Tam Jochen h.m.Prehn hongfeng Wang Zheng Ying Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences Soochow UniversitySuzhou 215123China mOE Key Laboratory of Geriatric Diseases and Immunology College of Pharmaceutical SciencesSuzhou Medical College of Soochow UniversitySuzhou 215123China Jiangsu Province Engineering Research Center of Precision Diagnostics and Therapeutics Development Soochow UniversitySuzhou 215123China Dept.of Physiology&medical Physics and FUTURE-NEURO Research Centre Royal College of Surgeons in IrelandDublin D02 YN77Ireland Faculty of health Sciences University of MacaoTaipaMacao 999078China Insititutes of Biology and medical Science Soochow UniversitySuzhou 215123China

Growing evidences indicate that dysfunction of autophagy contributes to the disease pathogenesis of amyotrophic lateral sclerosis(ALS)and frontotemporal dementia(FTD),two neurodegenerative *** GGGGCC·GGCCCC repeat RNA expansion in chromosome 9 open reading frame 72(C9orf72)is the most genetic cause of both ALS and *** to the previous studies,GGGGCC·GGCCCC repeat undergoes the unconventional repeat-associated non-ATG translation,which produces dipeptide repeat(DPR)*** there is a growing understanding that C9orf72 DPRs have a strong ability to harm neurons and induce C9orf72-linked ALS/FTD,whether these DPRs can affect autophagy remains *** the present study,we find that poly-GR and poly-PR,two arginine-containing DPRs which display the most cytotoxic properties according to the previous studies,strongly inhibit starvation-induced ***,our data indicate that arginine-rich DPRs enhance the interaction between BCL2 and BECN1/Beclin 1 by inhibiting BCL2 phosphorylation,therefore they can impair autophagic clearance of neurodegenerative disease-associated protein aggregates under starvation condition in ***,our study not only highlights the role of C9orf72 DPR in autophagy dysfunction,but also provides novel insight that pharmacological intervention of autophagy using SW063058,a small molecule compound that can disrupt the interaction between BECN1 and BCL2,may reduce C9orf72 DPR-induced neurotoxicity.

关键词： Amyotrophic lateral sclerosis Frontotemporal dementia C9orf72 Autophagy BCL2 BECN1/Beclin 1 Dipeptide repeat Neurodegeneration

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Construction of a broad-host-range Anderson promoter series and particulate methane monooxygenase promoter variants expand the methanotroph genetic toolbox

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Synthetic and Systems Biotechnology 2024年第2期9卷 250-258页

作者： Etash h.Bhat Jessica m.henard Spencer A.Lee Dustin mchalffey mahith S.Ravulapati Elle V.Rogers Logan Yu David Skiles Calvin A.henard Department of Biological Sciences and BioDiscovery Institute University of North TexasDentonTXUSA

methanotrophic bacteria are currently used industrially for the bioconversion of methane-rich natural gas and anaerobic digestion-derived biogas to valuable *** bacteria may also serve to mitigate the negative effects of climate change by capturing atmospheric greenhouse *** genetic tools have previously been developed for genetic and metabolic engineering of ***,the available tools for use in methanotrophs are significantly underdeveloped compared to many other industrially relevant bacteria,which hinders genetic and metabolic engineering of these *** such,expansion of the methanotroph genetic toolbox is needed to further our understanding of methanotrophy and develop biotechnologies that leverage these unique microbes for mitigation and conversion of methane to valuable ***,we determined the copy number of three broad-host-range plasmids in methylococcus capsulatus Bath and methylosinus trichosporium OB3b,representing phylogenetically diverse Gammaproteobacterial and Alphaproteobacterial methanotrophs,***,we show that the commonly used synthetic Anderson series promoters are functional and exhibit similar relative activity in *** and *** OB3b,but the synthetic series had limited ***,we mutagenized the native *** particulate methane monooxygenase promoter and identified variants with activity that expand the activity range of synthetic,constitutive promoters functional not only in ***,but also in Escherichia ***,the tools developed here advance the methanotroph genetic engineering toolbox and represent additional synthetic genetic parts that may have broad applicability in Pseudomonadota bacteria.

关键词： methanotroph methane monooxygenase Promoter metabolic engineering Synthetic biology

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Uncovering the dominant contribution of intermediate volatility compounds in secondary organic aerosol formation from biomass-burning emissions

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National Science Review 2024年第3期11卷 150-158页

作者： Kun Li Jun Zhang David m.Bell Tiantian Wang houssni Lamkaddam Tianqu Cui Lu Qi mihnea Surdu Dongyu Wang Lin Du Imad El haddad Jay G.Slowik Andre S.h.Prevot Environment Research Institute Shandong University Laboratory of Atmospheric Chemistry Paul Scherrer Institute

Organic vapors from biomass burning are a major source of secondary organic aerosols(SOAs). Previous smog chamber studies found that the SOA contributors in biomass-burning emissions are mainly volatile organic compounds(VOCs). While intermediate volatility organic compounds(IVOCs) are efficient SOA precursors and contribute a considerable fraction of biomass-burning emissions, their contribution to SOA formation has not been directly observed. here, by deploying a newly-developed oxidation flow reactor to study SOA formation from wood burning, we find that IVOCs can contribute ～70% of the formed SOA, i.e.>2 times more than VOCs. This previously missing SOA fraction is interpreted to be due to the high wall losses of semi-volatile oxidation products of IVOCs in smog chambers. The finding in this study reveals that SOA production from biomass burning is much higher than previously thought, and highlights the urgent need for more research on the IVOCs from biomass burning and potentially other emission sources.

关键词： atmospheric chemistry biomass burning secondary organic aerosol intermediate volatility organic compounds

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Risk scores for allograft failure: Are they still useful in liver recipients from donation after circulatory death?

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World Journal of Transplantation 2024年第4期14卷 95-100页

作者： mohamed h mohamed Chairi mónica mogollón González Jennifer Triguero Cabrera Inmaculada Segura Jiménez maria T Villegas herrera Jesús m Villar del moral Transplant Surgery Division Department of SurgeryVirgen de las Nieves University HospitalGranada 18013AndalusiaSpain

BACKGROUND Liver grafts from donation after circulatory death(DCD)are associated with a higher risk of early graft dysfunction,determined by the warm ischemia and cold ischemia *** is essential to have precise criteria to identify this complication in order to guide therapeutic *** To validate different graft and recipient survival scores in patients undergoing liver transplantation(LT)with DCD *** A retrospective and observational unicentric study was conducted on 65 LT patients with grafts obtained from controlled DCD donors from November 2013 to November *** United Kingdom(UK)risk score,early allograft dysfunction(EAD)Olthoff score,and model for early allograft function(mEAF)score were used to evaluate the risk of graft and recipient survival *** survival analysis purposes,we used the Kaplan-meier method,and the differences between subgroups were compared using the log-rank(mantel-Cox)*** Sixty-five patients were included in the *** UK risk score did not demonstrate predictive capacity for recipient or graft ***,in donors aged over 70 years old(18.4%),it significantly predicted graft survival(Pmeier survival curves,graft survival rates at 6 months,2 years,and 5 years in the futility group dramatically decreased to 50%compared to the other groups(log-rank 8.806,Phe EAD Olthoff and mEAF scores did not demonstrate predictive capacity for recipient or graft *** on Kaplan-meier survival curves,patients with a mEAF score≥7 had a lower graft survival rate at 6 months,2 years,and 5 years compared to patients with a lower mEAF score(log-rank 4.667,Ph UK DCD risk score and mEAF score showed predictive capability for graft survival.

关键词： Liver transplantation Donation after circulatory death Early allograft dysfunction Risk scores Graft surviva

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morphology-Tailored Dynamic State Transition in Active-Passive Colloidal Assemblies

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Research 2024年第3期2024卷 751-760页

作者： Nan Yu Zameer h.Shah mingcheng Yang Yongxiang Gao Institute for Advanced Study Shenzhen University518060ShenzhenChina Key Laboratory of Optoelectronic Device and Systems of ministry of Education and Guangdong Province College of Optoelectronic EngineeringShenzhen University518060ShenzhenChina Beijing National Laboratory for Condensed matter Physics and Laboratory of Soft matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Songshan Lake materials Laboratory DongguanGuangdong 523808China.

mixtures of active self-propelled and passive colloidal particles promise rich assembly and dynamic states that are beyond reach via equilibrium ***,controllable transition between different dynamic states remains ***,we reveal a plethora of dynamic behaviors emerging in assemblies of chemically propelled snowman-like active colloids and passive spherical particles as the particle shape,size,and composition are *** example,assembles of one or more active colloids with one passive particle exhibit distinct translating or orbiting states while those composed of one active colloid with 2 passive particles display persistent“8”-like cyclic motion or hopping between circling states around one passive particle in the plane and around the waist of 2 passive ones out of the plane,controlled by the shape of the active colloid and the size of the passive particles,*** morphology-tailored dynamic transitions are in excellent agreement with state diagrams predicted by mesoscale dynamics *** work discloses new dynamic states and corresponding transition strategies,which promise new applications of active systems such as micromachines with functions that are otherwise impossible.

关键词： Transition otherwise transitions

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Regulating microstructure and composition by carbonizing in-situ grown metal-organic frameworks on cotton fabrics for boosting electromagnetic wave absorption

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Nano Research 2024年第8期17卷 7290-7300页

作者： Jie Jin hongsen Long hu Liu Yan Guo Tiantian Bai Ben Bin Xu mohammed A.Amin hua Qiu mohamed h.helal Chuntai Liu Changyu Shen Zeinhom m.El-Bahy Zhanhu Guo State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China China State Key Laboratory of Powder metallurgy Central South UniversityChangsha 410000China School of Electronic Engineering North China University of Water Resources and Electric PowerZhengzhou 450046China Complex Conditions of high-end Tire Technology Innovation Center Shuguang Rubber Industry Research&Design Institute Co.LtdGuilin 541004China Integrated Composites Lab Department of Mechanical and Civil EngineeringNorthumbria UniversityNewcastle Upon TyneNE18STUK Department of Chemistry College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Shaanxi Key Laboratory of macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Department of Chemistry Faculty of Arts and ScienceNorthern Border UniversityRafha 73213Saudi Arabia Department of Chemistry Faculty of ScienceAl-Azhar UniversityNasr City 11884CairoEgypt

high-temperature carbonized metal-organic frameworks(mOFs)derivatives have demonstrated their superiority for promising electromagnetic wave(EmW)absorbers,but they still suffer from limited EmW absorption capacity and narrow *** the advantage of microstructure and chemical composition regulation for the design of EmW absorber,hierarchical heterostructured moS_(2)/CoS_(2)-Co_(3)O_(4)@cabonized cotton fabric(CF)(mCC@CCF)is prepared by growing ZIF-67 mOFs onto CF surface,chemical etching,and *** from the dual loss mechanism of magnetic-dielectric multicomponent carbonized mOFs,chemical etching and carbonization process can effectively introduce abundant micro-gap structure that can result in better impedance matching and stronger absorption capacity via internal reflection,doped heteroatoms(mo,N,S)to supply additional dipolar polarization loss,and numerous heterointerfaces among moS_(2),CoS_(2),Co_(3)O_(4),and CCF that produce promoted conduction loss and interfacial polarization ***,a minimal reflection loss of−52.87 dB and a broadest effective absorption bandwidth of 6.88 Ghz were achieved via tunning the sample thickness and filler loading,showing excellent EmW absorption *** research is of great value for guiding the research on mOFs derivatives based EmW absorbing materials.

关键词： metal-organic frameworks hierarchical structure chemical etching sulfurization electromagnetic wave absorption

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