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engineering of efficient visible light photocatalysts:Ti_(1-x+y)Cu_(x)La_(y)O_(2)(x=0.03;y=0,0.005,0.01) compositions

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Journal of Rare earths 2024年第3期42卷 497-505,I0003页

作者： s.M.Yakout A.M.Youssef Inorganic Chemistry Department National Research Centre(NRC)El Buhouth StDokkiCairo12622Egypt

In dye-photocatalysis, widening the wavelengths absorption range of catalysts as well as aborting the recombination of the photoexcited charge carriers(electrons-holes pairs) are of paramount *** the current study, we report the photocatalytic characteristics of four compositions composed of TiO_(2),Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders for two harmful dyes(Congo red and methylene blue). The X-ray diffraction technique verified the configuration of mixed anatase and rutile phases in pure TiO_(2)and Ti_(0.97)Cu_(0.03)O_(2)powders while Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders possess anatase phase only. The changes of the band gap structure and dimensions of the unit cell volume of TiO_(2)confirm the substitution of Ti^(4+)sites by Cu^(2+)and La^(3+)ions. Remarkable widening of wavelengths absorption with formation of long absorption tails were found in TiO_(2)(3.13 e V) through insertion of La^(3+)plus Cu^(2+)ions. Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)samples exhibit a visible light band gap of 2.3 and 2.7 e V, respectively. Based on seM images, incorporation of Cu^(2+)and La^(3+)ions influences the surface morphology of TiO_(2). The resulting Ti_(0.97)Cu_(0.03)O_(2), Ti_(0.965)Cu_(0.03)La_(0.005)O_(2)and Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)powders present enhanced photocatalytic activity towards Congo red dye degradation compared to pure one under natural solar spectrum. The best Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalyst exhibits superior photocatalytic activity of 96% for 10 ppm CR dye in 20 min as well as above average photocatalytic efficiency of 63% for 30 ppm CR dye in 120 min. As well, it showed acceptable photodegradation activity of 52% for 30 ppm MB solution in 140 min of sunlight irradiation. The heightened photodegradation efficiency of Ti_(0.96)Cu_(0.03)La_(0.01)O_(2)catalyst can be clarified in terms of higher ch

关键词： semiconductor TiO_(2) Rare earths Congo red Methylene blue solar spectrum Photodegradation

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Utilizing agro-industrial wastes panels in developing cost-efficient thermally insulating wall claddings for residential energy retrofitting in egypt

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energy and Built environment 2024年第5期5卷 683-703页

作者： e.A.Darwish Ayah salem eldeeb Department of Architecture Faculty of EngineeringAin Shams University1 Sarayat StreetAbbaseyaCairoEgypt Department of Interior Architecture Faculty of Fine ArtsAlexandria University108 Abdel-Salam Aref StreetGeleemAlexandriaEgypt

Local agro-industrial wastes-based particleboards and fiberboards in egypt are manufactured mainly from sugarcane-bagasse and flax *** panels are used in decorations and interior *** paper aimed to broaden their market to be utilized in local low-cost and simple building envelope retrofitting packages in-stead of conventional packages that depend on imported expanded polystyrene and wet-rendered gypsum *** conductivities of various existing sugarcane-bagasse and flax-shives-based panels were measured to be used in developing multilayered interior claddings with adequate thermal insulating performance to increase the thermal mass of a validated non-insulated case-study residential building as recommended by the egyptian Code for energy efficiency of Residential *** retrofitted using the developed cladding assemblies were simulated using Design Builder to determine their achieved annual energy savings and predict their *** conductivities of sugarcane-bagasse and flax-shives-based particleboards were lower than wood-based cladding panels,with the range of 0.05-0.1166 W/***,the thermal conductivities of sugarcane-bagasse fiberboard had the range of 0.0926-01,111 W/mK which is significantly lower than wood-based *** results showed that both models retrofitted,sugarcane bagasse-based and flax shives-based,achieved better energy savings,5.07%and 5.04%,than the conventionally retrofitted model,3.73%.Furthermore,the flax-shives-based model showed higher profitability,with positive income achieved in the 15th year,than a con-ventionally retrofitted model,achieved in the 20th year,and the sugarcane-bagasse-based model,achieved in the 19th ***,it was recommended that although flax-shives-based wall claddings were usually 14-20%thicker than sugarcane-bagasse-based claddings,they provided similarly high annual energy savings with lower initial costs and higher profitability.

关键词： sugarcane bagasse Flax shives Medium density fiberboard Particleboards Design Builder

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Luminescent Composite Films Based on Mechanically strong Ladder-like Polyphenylsilsesquioxane and Oligophenyleuropiumsiloxane

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Chinese Journal of Polymer science 2024年第11期 1793-1801页

作者： e.e.Kim T.O.ershova A.s.Belova D.A.Khanin e.V.Bashkova G.G.Nikiforova Yu.N.Kononevich A.A.Anisimov O.I.shchegolikhina A.M.Muzafarov A.N.Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Tula state Lev Tolstoy Pedagogical University V.Topchiev Institute of Petrochemical synthesis Russian Academy of sciences Moscow Institute of Physics and Technology (National Research University) N.s.enikolopov Institute of synthetic Polymeric Materials Russian Academy of Sciences

Nowadays organosilicon luminescent materials are of increasing interest due to the variety of their synthetic or modification techniques and application fields. Ladder polyphenylsilsesquioxanes(L-PPsQ) are a unique class of organosilicon polymers, which can be ideal matrices for the luminescent composites due to their high thermal stability, optical transparency and mechanical strength. In this work, new mechanically strong, heat-resistant, transparent and sensitive to ammonia vapor luminescent composite films based on L-PPsQ have been obtained. As the source of europium ions oligophenyleuropiumsiloxane was used, demonstrating perfect compatibility to the matrix due to the similar *** improve luminescent properties of the films, new organosilicon ligands were introduced into the composites and their influence on the properties of the materials was studied. Valuable properties of described composites may allow their further application as multifunctional coatings.

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Mixing and matching sMXL proteins to fine-tune strigolactone responses

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Molecular Plant 2024年第8期17卷 1167-1169页

作者： Jenna e.Hountalas shelley Lumba Department of Cell&systems Biology University of Toronto25 Willcocks StreetTorontoON M5S 3B2Canada Centre for the Analysis of Genome evolution and Function University of Toronto25 Willcocks StreetTorontoON M5S 3B2Canada

A common mechanism in plant hormone signaling is hormonedependent degradation of downstream *** the case of strigolactone(sL)signaling,one group of sUPPRessOR OF MORe AXILLARY BRANCHes 2(MAX2)1-LIKe(sMXL)proteins undergoes hormone-dependent degradation,while another does not.A recent publication in Molecular Plant by Li et al.(2024)illustrates that mixing and matching a sMXL resistant to sL degradation with a sMXL sensitive to sL degradation finely tunes sL *** phenomenon could reflect a naturally occurring negative transdominance,which is a dominantnegative effect arising not from a mutant allele of the same gene but rather from a different gene altogether(Veitia,2007).This trans-acting protein attenuates sL-dependent degradation of the sMXL *** findings have exciting implications for how different sMXL combinations could result in a gradient of sL responses.

关键词： complex. matching degradation

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Chasing sequencing Perfection:Marching Toward Higher Accuracy and Lower Costs

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Genomics, Proteomics & Bioinformatics 2024年第2期22卷 1-12页

作者： Hangxing Jia shengjun Tan Yong e.Zhang CAs Key Laboratory of Zoological systematics and evolution&state Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of sciences Beijing 100049China CAs Center for excellence in Animal evolution and Genetics Chinese Academy of SciencesKunming 650223China

Next-generation sequencing(NGs),represented by Illumina platforms,has been an essential cornerstone of basic and applied ***,the sequencing error rate of 1 per 1000 bp(10^(−3))represents a serious hurdle for research areas focusing on rare mutations,such as somatic mosaicism or microbe *** examining the high-fidelity sequencing methods developed in the past decade,we summarized three major factors underlying errors and the corresponding 12 strategies mitigating these *** then proposed a novel framework to classify 11 preexisting representative methods according to the corresponding combinatory strategies and identified three trends that emerged during methodological *** further extended this analysis to eight long-read sequencing methods,emphasizing error reduction ***,we suggest two promising future directions that could achieve comparable or even higher accuracy with lower costs in both NGs and long-read sequencing.

关键词： sequencing error High-fidelity sequencing Consensus sequencing single-molecule sequencing Rare mutation

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Hepatitis e virus infections

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World Journal of Virology 2024年第2期13卷 5-10页

作者： Basavraj s Nagoba Abhijit s Rayate Department of Microbiology Maharashtra Institute of Medical Sciences&Research(Medical College)Latur 413531India Department of surgery Maharashtra Institute of Medical Sciences&Research(Medical College)Latur 413531India

Hepatitis e virus(HeV)infection is now endemic *** patients with acute infection recover *** and sporadic cases,particularly in high-risk individuals are emerging *** patients with risk factors like pregnancy and pre-existing chronic liver disease,present with or progress rapidly to severe ***-suppression in post-transplant patients is an additional risk *** FDA-approved diagnostic tests are the need of the *** studies are needed to establish guideline-based treatment regimen and outbreak preparedness for HeV to decrease global morbidity,mortality,and healthcare *** for screening donors and transplant cases are requi-red.

关键词： Challenges Chronic hepatitis e Hepatitis e virus Post-transplant hepatitis Risk factors

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In vivo astrocyte reprogramming following spinal cord injury

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Neural Regeneration Research 2024年第3期19卷 487-488页

作者： Yannick N.Gerber Florence e.Perrin MMDN University of MontpellierEPHEINSERMMontpellierFrance Institut Universitaire de France(IUF) ParisFrance

Harmful and helpful roles of astrocytes in spinal cord injury(sCI):sCI induce gradable sensory,motor and autonomic impairments that correlate with the lesion severity and the rostro-caudal location of the injury *** absence of spontaneous axonal regeneration after injury results from neuron-intrinsic and neuron-extrinsic ***,not only adult neurons display limited capability to regrow axons but also the injury environment contains inhibitors to axonal regeneration and a lack of growth-promoting *** other cell populations that respond to the lesion,reactive astrocytes were first considered as only detrimental to spontaneous axonal ***,astrocytes.

关键词： injury impairment programming

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scanning transmission electron microscopy and atom probe tomography analysis of non-stoichiometry long-period-stacking-ordered structures in Mg-Ni-Y/sm alloys

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Journal of Magnesium and Alloys 2024年第3期12卷 954-965页

作者： Yimeng Chen Manuel Legrée Jean-Louis Bobet Alexander Kvit CAMeCA Instruments Inc MadisonWI 53711USA ICMCB Universitéde BordeauxPessacCEDEX 33608France NIAC&Materials science Department University of WisconsinMadisonWI 53706USA

The long-period-stacking-ordered(LPsO)structure affects the mechanical,corrosion and hydrolysis properties of Mg *** current work employs high angle annular dark field-scanning transmission electron microscopy(HAADF-sTeM)and atom probe tomography(APT)to investigate the structural and local chemical information of LPsO phases formed in Mg-Ni-Y/sm ternary alloys after extended isothermal *** on the alloying elements and their concentrations,Mg-Ni-Y/sm develops a two-phase LPsO+α-Mg structure in which the LPsO phase contains defects,hybrid LPsO structure,and Mg ***-sTeM and APT indicate non-stoichiometric LPsO with incomplete Ni_(6)(Y/sm)_(8) *** addition,the APT quantitatively determines the local composition of LPsO and confirms the presence of Ni within the Mg bonding *** results provide insight into a better understanding of the structure and hydrolysis properties of LPsO-Mg alloys.

关键词： Magnesium alloys Long-range ordering Atom probe tomography(APT) sTeM HAADF Hydrolysis properties.

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The multi-impurity system in Cdse nanoplatelets:electronic structure and thermodynamic properties

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Communications in Theoretical Physics 2024年第3期76卷 165-173页

作者： D A Baghdasaryan V A Harutynyan e M Kazaryan H A sarkisyan Russian-Armenian University H Emin 1230051YerevanArmenia Institute of Applied Problems of Physics 25 Nersisyan St0014YerevanArmenia

This paper theoretically studies the impurity states and the effects of impurity concentration and configuration on the optical,electrical,and statistical properties of Cdse nanoplatelets(NPLs).An image charge-based model of electron-impurity interaction is *** charge-carrier energy spectra and corresponding wave functions depending on the impurity number and configuration are *** electron binding energies are calculated for different NPL *** is shown that the image charge-based interaction potential that arises due to the dielectric constants mismatch is much stronger than the interaction potential that does not take such a mismatch into ***,it is demonstrated that the binding energies are increasing with the number of *** calculate the canonical partition function using the energy levels of the electron,which in turn is used to obtain the mean energy,heat capacity,and entropy of the non-interacting electron *** thermodynamic properties of the non-interacting electron gas that depend on the geometric parameters of the NPL,impurity number,configuration,and temperature are studied.

关键词： nanoplateletes thermodynamic properties impurity states

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A bacterial protein Rhp-PsP inhibits plant viral proliferation through endoribonuclease activity

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Journal of Integrative Agriculture 2024年第6期23卷 1967-1978页

作者： Lijie Chen Qianze Peng Xiaohua Du Weixing Zhang Ju’e Cheng shu’e sun Deyong Zhang Pin su Yong Liu Longping Branch College of BiologyHunan UniversityChangsha 410082China state Key Laboratory of Hybrid Rice/Institute of Plant Protection Hunan Academy of Agricultural SciencesChangsha 410125China

Plant virus causes massive crop losses ***,there is currently no effective measure to control plant viral ***,we identify an antiviral protein Rhp-PsP,produced by the bacterial Rhodopseudomonas palustris strain *** this study,we discover that the antiviral activity of Rhp-PsP relies on its endoribonuclease *** the arginine(R)residue at position 129 onto alanine(A)abolishs its endoribonuclease activity on coat protein(CP)RNA of tobacco mosaic virus(TMV),consequentially,compromises the antiviral activity of *** investigation demonstrates that,the mutant Rhp-PsP^(R129A)is unable to form the homotrimer as the wild type,indicating the importance of quaternary junction for the endoribonuclease *** of Rhp-PsP in Nicotiana benthamiana significantly enhances the resistance against TMV of seedlings,while expression of Rhp-PsP^(R129A)did not,confirming that endoribonuclease activity is responsible for the antiviral activity of *** addition,foliar spray of Rhp-PsP solution on tomato and pepper plants significantly reduces the disease index of viral diseases,indicating that Rhp-PsP shows potential to develop antiviral agent in practice.

关键词： Rhodopseudomonas palustris Rhp-PsP tobacco mosaic virus endoribonuclease antiviral activity

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