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Effect of tellurium(Te^(4+))irradiation on microstructure and associated irradiation-induced hardening

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Chinese Physics B 2021年第5期30卷 87-92页

作者： Hefei Huang Jizhao Liu Guanhong Lei Ondrej Muránsky Tao Wei mihail ionescu Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Australian Nuclear Science and Technology Organisation(ANSTO) Lucas HeightsSydneyNSW2234Australia University of New South Wales(UNSW) KensingtonSydneyNSW2052Australia

The GH3535 alloy samples were irradiated using 15-MeV Te^(4+) ions at 650℃to a dose of 0.5,3.0,10,and 20 dpa,*** Te atoms distribution and microstructure evolution were examined by electron probe microanalysis(EPMA)and transmission electron microscopy(TEM).The nano-indenter was then used to measure the nano-hardness changes of samples before and after *** results showed the formation of dislocation loops in the irradiated *** mean diameters increase with the increase of irradiation dose and tends to be saturated when irradiation dose exceeds 10 *** ratio of yield strength increments calculated by dispersed barrier hardening(DBH)model is basically consistent with that of nano-hardness increments measured by *** addition,the relationship between the nano-hardness increments and dpa for the GH3535 alloy irradiated by Te ions has been revealed in the study.

关键词： GH3535 alloy Te ions irradiation microstructural evolution irradiation hardening

Biobased Aromatic-Aliphatic Polyols from Cardanol by Thermal Thiol-Ene Reaction

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Journal of Renewable Materials 2018年第1期6卷 87-101页

作者： Maha LShrestha mihail ionescu Xianmei Wan Nikola Bilic′ Zoran SPetrovic′ Tom Upshaw Pittsburg State University Kansas Polymer Research Center1701 South BroadwayPittsburgKansas66762USA Chevron Phillips Chemical Company LP Bartlesville Technology CenterBartlesvilleOklahoma74003-6670USA

Cardanol is a natural phenol which is obtained from high vacuum distillation of cashew nut shell *** contains a hydrocarbon chain of 15 carbon atoms in the meta position,either with one,two or three nonconjugated double *** article describes thermal thiol-ene reaction to synthesize new cardanol-based polyols for polyurethanes with aromatic-aliphatic *** hydroxyl group was blocked by alkoxylation and 2-mercaptoethanol was added to the double bonds of propoxylated *** resultant product is a mixture of polyols that may contain one,two,three or four hydroxyl groups,as a function of the number of double bonds reacted with *** polyols,but with much higher functionality,were also synthesized from condensation of cardanol-based novolacs with *** cardanolbased polyols were further utilized to prepare rigid polyurethane foams(PUs)with excellent physical and mechanical properties,useful for various applications in chemical and food industries.

关键词： Thiol-ene mercaptans cashew nut shell liquid polyurethanes

Biobased Aromatic-Aliphatic Polyols from Cardanol by Photochemical Thiol-ene Reaction

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Journal of Renewable Materials 2018年第5期6卷 504-516页

作者： Maha L.Shrestha mihail ionescu Xianmei Wan Zoran S.Petrović Kansas Polymer Research Center Pittsburg State UniversityPittsburgKansasUSA 66762 Department of Chemistry Pittsburg State UniversityPittsburgKansasUSA 66762

Biobased aromatic-aliphatic polyols were previously synthesized from a thermal thiol-ene reaction of propoxylated cardanol with 2-mercaptoethanol(ME)in the presence of azobisisobutyronitrile(AIBN)as a radical *** used for this purpose was obtained as a dark-brown liquid(Gardner Color Reference^18).The photochemical thiol-ene reaction can also be used to prepare aromatic-aliphatic polyols by employing *** the photochemical thiol-ene reaction,2-mercaptoethanol was added successfully to C=C double bond of cardanol,suggesting that phenolic group may not play an inhibitory role in the radical thiol-ene ***,we preferred to alkoxylate the phenolic hydroxyl group of cardanol,which is much more reactive with isocyanates than phenolic hydroxyls,to generate a new aliphatic hydroxyl ***,the functionality of polyols was also improved by two methods:1)using 1-thio-glycerol instead of 2-mercaptoethanol and 2)using alkoxylated cardanol with glycidol(Cardanol-GLY)instead of propoxylated cardanol(Cardanol-PO).These polyols were then used in preparation of rigid polyurethane foams that can be useful in various applications such as insulation of freezers,pipes and storage tanks in food and chemical industries.

关键词： Cardanol photochemical reactions thiol-ene reaction 2-mercaptoethanol 1-thio-glycerol

Dysregulation of genes involved in the long-chain fatty acid transport in pancreatic ductal adenocarcinoma

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 199-206页

作者： Radu Cristian Poenaru Elena Milanesi Andrei Marian Niculae Anastasia-Maria Dobre Catalina Vladut Mihai Ciocîrlan Daniel Vasile Balaban Vlad Herlea Maria Dobre mihail Eugen Hinescu Faculty of Medicine Carol Davila University of Medicine and PharmacyBucharest 050474Romania Department of Radiobiology Victor Babes National Institute of PathologyBucharest 050096Romania Department of Pathology Victor Babes National Institute of PathologyBucharest 050096Romania Department of Gastroenterology Prof.Dr.Agrippa Ionescu Clinical Emergency HospitalBucharest 011356Romania Department of Pathology Fundeni Clinical InstituteBucharest 022258Romania

BACKGROUND Pancreatic ductal adenocarcinoma(PDAC)is an aggressive lethal malignancy with limited options for treatment and a 5-year survival rate of 11%in the United *** for other types of tumors,such as colorectal cancer,aberrant de novo lipid synthesis and reprogrammed lipid metabolism have been suggested to be associated with PDAC development and *** To identify the possible involvement of lipid metabolism in PDAC by analyzing in tumoral and non-tumoral tissues the expression level of the most relevant genes involved in the long-chain fatty acid(FA)import into *** A gene expression analysis of FASN,CD36,SLC27A1,SLC27A2,SLC27A3,SLC27A4,SLC27A5,ACSL1,and ACSL3 was performed by qRT-PCR in 24 tumoral PDAC tissues and 11 samples from non-tumoral pancreatic tissues obtained via fine needle aspiration or via surgical *** genes were considered significantly dysregulated between the groups when the p value was<0.05 and the fold change(FC)was≤0.5 and≥*** We found that three FA transporters and two long-chain acyl-CoA synthetases genes were significantly upregulated in the PDAC tissue compared to the non-tumoral tissue:SLC27A2(FC=5.66;P=0.033),SLC27A3(FC=2.68;P=0.040),SLC27A4(FC=3.13;P=0.033),ACSL1(FC=4.10;P<0.001),and ACSL3(FC=2.67;P=0.012).We further investigated any possible association between the levels of the analyzed mRNAs and the specific characteristics of the tumors,including the anatomic location,the lymph node involvement,and the presence of metastasis.A significant difference in the expression of SLC27A3(FC=3.28;P=0.040)was found comparing patients with and without lymph nodes involvement with an overexpression of this transcript in 17 patients presenting tumoral cells in the lymph *** Despite the low number of patients analyzed,these preliminary results seem to be *** lipid metabolism through a broad strategy could be a beneficial way to treat this *** in vitro and in vivo s

关键词： Carcinoma Pancreatic ductal Fatty acid transport Gene expression Biomarkers