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Production and decay of polarized hyperon-antihyperon pairs

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Chinese Physics C 2023年第5期47卷 29-48页

作者： Karin Schonning varvara batozskaya Patrik Adlarson 周小蓉 Department of Physics and Astronomy Uppsala University Uppsala Sweden Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China National Centre for Nuclear Research WarsawPoland University of Science and Technology of China Hefei 230026China

关键词： hyperon polarization CP violation form factors

Primary unifocal penile follicular center non-Hodgkin lymphoma:Report of a rare case and review of the literature

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Asian Journal of Urology 2024年第1期11卷 134-136页

作者： Nikolaos Kostakopoulos Christos Masaoutis Vasileios Argyropoulos varvara Pantelaion Panagiotis Theodoropoulos Panagiotis Kouroupakis Athanasios Kostakopoulos 1st Department of Urology Metropolitan General HospitalAthensGreece Department of Pathology Metropolitan General HospitalAthensGreece Department of Pathology Evangelismos General Hospital of AthensGreece 2nd Department of Surgery Evangelismos General Hospital of AthensGreece Department of Haematology Sismanogleio General HospitalAthensGreece

Dear Editor,We present a rare case of a primary penile follicular center non-Hodgkin lymphoma and a review of the available literature on this condition.A BCL2 gene transposition which was identified with fluorescent in situ hybridization(FISH)molecular analysis is a unique manifestation not previously reported to the best of our knowledge.A 67-year-old man presented with a 3-month history of a small nodule on the left side of the corona of glans *** patient had no significant medical or family *** patient underwent excision and biopsy of the penile lesion with a 0.5 cm macroscopic margin under local anesthesia and *** was discharged on the day of surgery,and there were no postoperative complications or adverse *** informed consent was obtained from thepatient.

关键词： anesthesia lymphoma rare

Stem cells' centrosomes: How can organelles identified 130 years ago contribute to the future of regenerative medicine?

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World Journal of Stem Cells 2021年第9期13卷 1177-1196页

作者： Andreas Goutas varvara Trachana Department of Biology Faculty of MedicineUniversity of ThessalyLarisa 41500BiopolisGreece

At the core of regenerative medicine lies the expectation of repair or replacementof damaged tissues or whole organs. Donor scarcity and transplant rejection aremajor obstacles, and exactly the obstacles that stem cell􀀀based therapy promisesto overcome. These therapies demand a comprehensive understanding of theasymmetric division of stem cells, i.e. their ability to produce cells with identicalpotency or differentiated cells. It is believed that with better understanding,researchers will be able to direct stem cell differentiation. Here, we describeextraordinary advances in manipulating stem cell fate that show that we need tofocus on the centrosome and the centrosome-derived primary cilium. This beliefcomes from the fact that this organelle is the vehicle that coordinates theasymmetric division of stem cells. This is supported by studies that report thesignificant role of the centrosome/cilium in orchestrating signaling pathways thatdictate stem cell fate. We anticipate that there is sufficient evidence to place thisorganelle at the center of efforts that will shape the future of regenerativemedicine.

关键词： Centrosome Primary cilium Asymmetry Self-renewal Differentiation Stemness

Evaluation of the Phosphate Raw Materials Potential of Amur Region

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地学前缘 2009年第S1期16卷 167-168页

作者： varvara Kichanova Laboratory of Paleogeography and Nature Usage Institute of Geology and Nature Management

The Amur region,far east of Russia,is well endowed with phosphate in the forms of phosphorite, apatite,and *** 500-km2 Selitkansky phosphorite district has a proven reserve of ca.14.7 million tons（Mt） of P2O5.The Mi... 详细信息

关键词： resources of phosphate raw materials phosphorite apatite vivianite

Antimicrobial stewardship program in pediatric medicine

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Pediatric Investigation 2021年第3期5卷 229-238页

作者： varvara Probst Florinda Islamovic Ayesha Mirza University of Florida College of MedicineJacksonvilleFLUSA

The rising threats from antimicrobial resistance due to inappropriate utilization of antimicrobial agents in health care including the pediatric population has been a topic of concern at the global level for the last several *** antimicrobial stewardship program(ASP)is a multidisciplinary institutional initiative focusing primarily on the improvement of antimicrobial prescribing practices and limiting inappropriate *** play an important role in the implementation of healthcare strategies in pediatrics worldwide to reduce antimicrobial *** published reports demonstrate how adapted ASPs in pediatrics result in improvement of unnecessary antimicrobial utilization,decreasing drug resistance and treatment failure,minimization of adverse clinical outcomes,decreasing healthcare costs and hospital length of stay,and optimization of diagnostic ***,some barriers in pediatric ASP still *** narrative review describes core elements of ASP,the impact of implemented ASPs on pediatric healthcare,and challenges of pediatric ASP as seen by the authors.

关键词： Antimicrobial stewardship Pediatrics Antimicrobial resistance Infection control

Gold Determination by Electrothermal Atomic Absorption Spectrometry After Preconcentration Using Natural Deep Eutectic Solvent Based on Menthol and Camphor

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Journal of Analysis and Testing 2023年第4期7卷 435-443页

作者： Valeriia Maksimova varvara Lapina Leonid Martynov Andrey Shishov Olga Mokhodoeva Vernadsky Institute of Geochemistry and Analytical Chemistry Russian Academy of SciencesMoscow 119991Russian Federation Lomonosov Institute of Fine Chemical Technologies MIREA-Russian Technological UniversityMoscow 119454Russian Federation Department of Analytical Chemistry Institute of ChemistrySaint-Petersburg State UniversitySt.Petersburg 199034Russian Federation

A novel analytical procedure for the determination of gold by electrothermal atomic absorption spectrometry combined with selective liquid-liquid extraction by natural deep eutectic solvents(NADESs)is *** extraction ability of the NADESs prepared using menthol,thymol and camphor toward gold in hydrochloric acid solutions was *** extraction efficiency was improved by optimizing the parameters including the composition of the NADES s,the volume ratio of organic and aqueous phases,kinetics,and acidity of the *** determination of gold was carried out by electrothermal atomic absorption spectrometry directly in the NADES s phase dissolved in isopropyl *** extraction recovery of gold from 1 mol/L HCl with the NADESs based on menthol and camphor mixed in a molar ratio 1:1 was 99.7%at an enrichment factor of *** limits of detection and quantification of the proposed procedure were 1μg/L and 3.3μg/L,respectively,with a relative standard deviation of less than 5%.The developed procedure was applied for determination of gold in the certified reference material of ore,environmental and waste waters.

关键词： Gold Liquid-liquid extraction Menthol/camphor Natural deep eutectic solvents(NADESs) Electrothermal atomic absorption spectrometry(ETAAS)

Intravenous iron sucrose for children with iron deficiency anemia: a single institution study

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世界儿科杂志:英文版 2016年第1期12卷 109-113页

作者： Elpis Mantadakis Emmanouela Tsouvala varvara Xanthopoulou Athanassios Chatzimichael Department of Pediatrics Democritus University of Thrace Faculty of Medicine and University General Hospital of EvrosAlexandroupolisThraceGreece

Background:Intravenous iron sucrose is not recommended by its manufacturers for use in children despite extensive safety and effi cacy data in ***:We reviewed the experience of our department between January,2011 and February,2014 with the use of intravenous iron sucrose in children≤14 years of age who failed in oral iron therapy for iron defi ciency anemia(IDA).Results:Twelve children(6 females)aged 1.2-14 years(median age 8.9 years)received at least one dose of intravenous iron *** patients had IDA inadequately treated or non-responsive to oral iron *** patient received therapy for blood transfusion avoidance and one for presumed iron refractory iron deficiency anemia(IRIDA).Iron sucrose infusions were given on alternate days up to three times per *** number of infusions per patient ranged from 2 to 6(median,3),the individual doses from 100 mg to 200 mg(median,200 mg),and the total doses from 200 mg to 1200 mg(median,400 mg).Iron sucrose was effective in raising the hemoglobin concentration to normal in all patients with IDA,i.e.,from 7.6±2.38 g/dL to 12.4±0.64 g/dL,within 31-42 days after the fi rst *** single patient with IRIDA demonstrated a 1.8 g/dL *** site disorders in three cases and transient taste perversion in one case were the only side ***:Intravenous iron sucrose appears to be safe and very effective in children with IDA who do not respond or cannot tolerate oral iron therapy.

关键词： adverse effects iron deficiency iron sucrose parenteral iron

Elastic Aerogels of Cellulose Nanofibers@Metal–Organic Frameworks for Thermal Insulation and Fire Retardancy

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Nano-Micro Letters 2020年第1期12卷 102-114页

作者： Shengyang Zhou varvara Apostolopoulou‑Kalkavoura Marcus Vinicius Tavares da Costa Lennart Bergstrom Maria Stromme Chao Xu Nanotechnology and Functional Materials Department of Engineering SciencesAngstrom LaboratoryUppsala University75121 UppsalaSweden Department of Materials and Environmental Chemistry Stockholm University10691 StockholmSweden Applied Mechanics Department of Engineering SciencesAngstrom LaboratoryUppsala University75121 UppsalaSweden

Metal–organic frameworks(MOFs)with high microporosity and relatively high thermal stability are potential thermal insulation and flame-retardant ***,the difficulties in processing and shaping MOFs have largely hampered their applications in these *** study outlines the fabrication of hybrid CNF@MOF aerogels by a stepwise assembly approach involving the coating and cross-linking of cellulose nanofibers(CNFs)with continuous nanolayers of *** cross-linking gives the aerogels high mechanical strength but superelasticity(80%maximum recoverable strain,high specific compression modulus of^200 MPa cm3 g−1,and specific stress of^100 MPa cm3 g−1).The resultant lightweight aerogels have a cellular network structure and hierarchical porosity,which render the aerogels with relatively low thermal conductivity of^40 mW m−1 K−*** hydrophobic,thermally stable MOF nanolayers wrapped around the CNFs result in good moisture resistance and fire *** study demonstrates that MOFs can be used as efficient thermal insulation and flame-retardant *** presents a pathway for the design of thermally insulating,superelastic fire-retardant nanocomposites based on MOFs and nanocellulose.

关键词： Metal-organic frameworks Nanocellulose Superelastic aerogel Thermal insulation Fire retardancy

Effects of ketogenic diet and ketone bodies on the cardiovascular system:Concentration matters

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World Journal of Diabetes 2020年第12期11卷 584-595页

作者： Souad Nasser varvara Vialichka Marta Biesiekierska Aneta Balcerczyk Luciano Pirola Carmen Laboratory INSERM Unit 1060—Lyon 1 UniversityPierre Benite 69310France Faculty of Biology and Environmental Protection Department of Molecular BiophysicsUniversity of LodzLodz 90-236Poland The University of Lodz Doctoral School of Exact and Natural Sciences Lodz 90-237Poland

Ketone bodies have emerged as central mediators of metabolic health,and multiple beneficial effects of a ketogenic diet,impacting metabolism,neuronal pathologies and,to a certain extent,tumorigenesis,have been reported both in animal models and clinical *** bodies,endogenously produced by the liver,act pleiotropically as metabolic intermediates,signaling molecules,and epigenetic *** endothelium and the vascular system are central regulators of the organism’s metabolic state and become dysfunctional in cardiovascular disease,atherosclerosis,and diabetic micro-and macrovascular *** physiological circulating ketone bodies can attain millimolar concentrations,the endothelium is the first-line cell lineage exposed to *** in diabetic ketoacidosis high ketone body concentrations are detrimental to the vasculature,recent research revealed that ketone bodies in the low millimolar range may exert beneficial effects on endothelial cell(EC)functioning by modulating the EC inflammatory status,senescence,and ***,we review the long-held evidence of detrimental cardiovascular effects of ketoacidosis as well as the more recent evidence for a positive impact of ketone bodies—at lower concentrations—on the ECs metabolism and vascular physiology and the subjacent cellular and molecular *** also explore arising controversies in the field and discuss the importance of ketone body concentrations in relation to their *** low concentration,endogenously produced ketone bodies upon uptake of a ketogenic diet or supplemented ketone bodies(or their precursors)may prove beneficial to ameliorate endothelial function and,consequently,pathologies in which endothelial damage occurs.

关键词： Endothelial cells Ketone bodies Vascular physiology β-Hydroxybutyrate β-Hydroxybutyrylation Histone post-translational modifications