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Effect of Phenolation, Lignin-Type and Degree of Substitution on the Properties of Lignin-Modified Phenol-Formaldehyde Impregnation Resins: Molecular Weight Distribution, Wetting Behavior, Rheological Properties and Thermal Curing Profiles

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Journal of Renewable Materials 2020年第6期8卷 603-630页

作者： Marion Thébault larysa kutuzova Sandra Jury Iris Eicher Edith-Martha Zikulnig-Rusch Andreas Kandelbauer Kompetenzzentrum Holz(Wood K Plus) LinzA-4040Austria Reutlingen University Lehr-und Forschungszentrum Process Analysis&TechnologySchool of Applied ChemistryReutlingenD-72762Germany

Here,the effects of substituting portions of fossil-based phenol in phenol formaldehyde resin by renewable lignin from two different sources are investigated using a factorial screening experimental *** the resins consumed by the wood-based industry,phenolics are one of the most important types used for impregnation,coating or gluing *** are prepared by condensing phenol with formaldehyde(PF).One major use of PF is as matrix polymer for decorative laminates in exterior cladding and wet-room *** requirements for such PFs are favorable flow properties(low viscosity),rapid curing behavior(high reactivity)and sufficient self-adhesion capacity(high residual curing potential).Partially substituting phenol in PF with bio-based phenolic co-reagents like lignin modifies the physicochemical properties of the resulting *** this study,phenol-formaldehyde formulations were synthesized where either 30%or 50%(in weight)of the phenol monomer were substituted by either sodium lignosulfonate or Kraft *** effect of modifying the lignin material by phenolation before incorporation into the resin synthesis was also *** resins so obtained were characterized by Fourier Transform Infra-Red(FTIR)spectroscopy,Size Exclusion Chromatography(SEC),Differential Scanning Calorimetry(DSC),rheology,and measurements of contact angle and surface tension using the Wilhelmy plate method and drop shape analysis.

关键词： Lignin lignin-phenol-formaldehyde resin(PF) surface energy viscosity thermal characterization design of experiments

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Impregnated Paper-Based Decorative Laminates Prepared from Lignin-Substituted Phenolic Resins

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Journal of Renewable Materials 2020年第10期8卷 1181-1198页

作者： Marion Thébault Ya Li Christopher Beuc Stephan Frömel-Frybort Edith-Martha Zikulnig-Rusch larysa kutuzova Andreas Kandelbauer Kompetenzzentrum Holz(Wood K Plus) Altenberger Straße 69A-4040LinzAustria University of Life Sciences and Natural Resources(BOKU) Universitäts-und Forschungszentrum Tulln(UFT)TullnA-3430Austria Reutlingen University Lehr-und Forschungszentrum Process Analysis&Technology(PA&T)School of Applied ChemistryReutlingenD-72762Germany

High Pressure Laminates(HPL)panels consist of stacks of self-gluing paper sheets soaked with phenol-formaldehyde(PF)*** important requirement for such PFs is that they must rapidly penetrate and saturate the paper *** substituting phenol with bio-based phenolic chemicals like lignin changes the physico-chemical properties of the resin and affects its ability to penetrate the *** this study,PF formulations containing different proportions of lignosulfonate and kraft lignin were used to prepare paper-based *** penetration of a Kraft paper sheet was characterized by a recently introduced,new device measuring the conductivity between both sides of the paper sheet after a drop of resin was placed on the surface and allowed to penetrate the *** main target value measured was the time required for a specific resin to completely penetrate the defined paper sample(“penetration time”).This penetration time generally depends on the molecular weight distribution,the flow behavior and the polarity of the resin which in turn are dependent on the manufacturing conditions of the *** the present study,the influences of the three process factors:(1)type of lignin material used for substitution,(2)lignin modification by phenolation and(3)degree of phenol substitution on the penetration times of various lignin-phenolic hybrid impregnation resins were studied using a complete twolevel three-factorial experimental *** laminates made with the resins diluted in methanol were mechanically tested in terms of tensile and flexural strains,and their cross-sections were studied by light microscopy.

关键词： Lignin phenol-formaldehyde resin(PF) decorative laminate impregnated paper

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Balloon dilation of congenital perforated duodenal web in newborns: Evaluation of short and long-term results

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World Journal of Gastrointestinal Endoscopy 2024年第6期16卷 343-349页

作者： Kirill Marakhouski Elena Malyshka Katsiaryna Nikalayeva larysa Valiok Aleh Pataleta Kiryl Sanfirau Aliaksandr Svirsky Vasily Averin Division of Diagnostic Republican Scientific and Practical Centre of Paediatric SurgeryMinsk 220113Belarus Department of Newborn Surgery Republican Scientific and Practical Center of Pediatric SurgeryMinsk 220013Belarus Department of Pediatric Surgery Republican Scientific and Practical Center of Pediatric SurgeryMinsk 220013Belarus Division of Diagnostic Republican Scientific and Practical Center of Pediatric SurgeryMinsk 220013Belarus Academic Chair of Pediatric Surgery Belarusian State Medical UniversityMinsk 220116Belarus

BACKGROUND Incomplete congenital duodenal obstruction(ICDO)is caused by a congenitally perforated duodenal web(CPDW).Currently,only six cases of balloon dilatation of the PDW in newborns have been *** To present our experience of balloon dilatation of a perforated duodenal memb-rane in newborns with *** Five newborns who underwent balloon dilatation of the CPDW along a prein-stalled guidewire between 2021 and 2023 were *** newborns diagnosed with ICDO who underwent laparotomy were included in the control *** In all cases,good anatomical and clinical results were *** three cases,a follow-up study was conducted after 1 *** average time to start enteral feeding per os was significantly earlier in the study group(4.4 d)than in the laparotomic group(21.2 days;P<0.0001).The time spent by patients in the intensive care unit and hospital after balloon dilatation was also significantly *** determined the selection criteria for possible and effective CPDW balloon dilatation in newborns as follows:(1)Presence of dynamic radiographic signs of the passage of a radiopaque substance beyond the zone of narrowing or radiographic signs of pneumatisation of the duodenum and small bowel distal to the web;(2)presence of endoscopic signs of CPDW;(3)successful cannulation with a guidewire performed parallel to the endoscope,with holes in the congenital duodenal web;and(4)successful positioning of the balloon performed along a freestanding guidewire on the *** Strictly following selection criteria for newborns with ICDO caused by CPDW ensures that endoscopic balloon dilatation using a pre-installed guidewire is safe and effective and shows good 1-year follow-up results.

关键词： Newborns Congenital duodenal obstruction Perforated duodenal membrane Endoscopy Balloon dilation

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Bottom-up synthesis of ultrathin straight platinum nanowires： Electric field impact

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Nano Research 2013年第5期6卷 303-311页

作者： Alexander Nerowski Joerg Opitz larysa Baraban Gianaurelio Cuniberti Institute far Materials Science and Max Bergmann Center of Biomaterials Dresden University of Technology Dresden 01062 Germany Fraunhofer Institute for Non-Destructive Testing Dresden 01109 Germany Division o fiT Convergence Engineering POSTECH Pohang 790-784 Republic of Korea

We present a study of the electric field effect on electrochemically grown ultrathin, straight platinum nanowires with minimum diameter of 15 nm and length in the micrometer range, synthesized on a silicon oxide substrate between metal electrodes in H2PtC16 solution. The influence of the concentration of the platinum- containing acid and the frequency of the applied voltage on the diameter of the nanowires is discussed with a corresponding theoretical analysis. We demonstrate for the first time that the electric field profile, provided by the specific geometry of the metal electrodes, dramatically influences the growth and morphology of the nanowires. Finally, we provide guidelines for the controlled fabrication and contacting of straight, ultrathin metal wires, eliminating branching and dendritic growth, which is one of the main shortcomings of the current bottom-up nanotechnology. The proposed concept of self-assembly of thin nanowires, influenced by the electric field, potentially represents a new route for guided nanocontacting via smart design of the electrode geometry. The possible applications reach from nanoelectronics to gas sensors and biosensors.

关键词： bottom-up growth directed electrochemicalnanowire assembly(DENA) metal nanowires nanostructuring nanoelectronics local electric field

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Introduction of antineoplastic drug NSC631570 in an inpatient and outpatient setting:Comparative evaluation of biological effects

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Asian Journal of Pharmaceutical Sciences 2016年第2期11卷 308-317页

作者： Mariia Rudyk Olexander Fedorchuk Yaroslav Susak Yaroslav Nowicky larysa Skivka Microbiology and General Immunology Department ESC“Institute of Biology”Taras Shevchenko National University of KyivUkraine R.E.Kavetsky Institute of Experimental Pathology Oncology and RadiobiologyNational Academy of Sciences of UkraineUkraine O.O Bogomolets National Medical University KyivUkraine Ukrainian Anticancer Institute ViennaAustria

The aim of this study is to evaluate the effect of moderate physical exercise and treatment time on the organism’s response to NSC631570. The sensitivity of circulating phagocytes to the drug at different times of day was estimated in in vitro experiments. NSC631570 was administered intravenously to healthy volunteers (eleven men, 23 ± 2 years) in a single therapeutic dose in an inpatient and an outpatient setting. Blood samples were obtained before the drug administration, 30 min after the drug injection and every fourth hour throughout the 24 hour period. Biochemical parameters were determined using the hematological analyzer. Flow cytometry was used to evaluate phagocyte metabolism. Treatment of circulating phagocytes with NSC631570 in vitro resulted in an increase in ROS production along with a decrease in their phagocytic activity, most expressed in the morning time. Drug injection to sedentary persons resulted in pro-inflammatory metabolic polarization of circulating phagocytes. Introduction of NSC631570 to active persons was accompanied by a significant increase in phagocyte endocytosis along with a decrease in the daily mean of ROS generation. Significant oscillation (but in the normal ranges) of urea, creatinine, alanine aminotransferase and aspartate aminotransferase after NSC631570 introduction in the outpatient setting was shown during the day. Physical activity interferes with immunomodulatory action of NSC631570 and abrogates pro-inflammatory shift of circulating phagocytes. Biochemical parameters of blood from patients treated with NSC631570 in the outpatient setting must be interpreted cautiously considering the effect of physical activity on some metabolic biomarkers.

关键词： NSC631570 Physical exercise Blood biochemical parameters Phagocytes functional polarization

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Routine laboratory parameters in patients with necrotizing pancreatitis by the time of operative pancreatic debridement:Food for thought

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World Journal of Gastrointestinal Surgery 2022年第1期14卷 64-77页

作者： Yaroslav M Susak Kristina Opalchuk Olexandr Tkachenko Mariia Rudyk larysa Skivka Department of Surgery with the Course of Emergency and Vascular Surgery O.O.Bogomolet’s National Medical UniversityKyiv 01601Ukraine Department of Surgery Anesthesiology and Intensive Care Postgraduate EducationO.O.Bogomolet’s National Medical UniversityKyiv 01601Ukraine Department of Surgery N2 Kyiv City Clinical Emergency HospitalKyiv City Clinical Emergency HospitalKyiv 02000Ukraine Department of Microbiology and Immunology Educational and Scientific Center“Institute of Biology and Medicine”Taras Shevchenko National University of KyivKyiv 01033Ukraine

BACKGROUND Timing of invasive intervention such as operative pancreatic debridement(OPD)in patients with acute necrotizing pancreatitis(ANP)is linked to the degree of encapsulation in necrotic collections and controlled *** markers of these processes might assist decision-making on the timing of surgical *** our opinion,it is logical to search for such markers among routine laboratory parameters traditionally used in ANP patients,considering simplicity and cost-efficacy of routine laboratory *** To evaluate laboratory variables in ANP patients in the preoperative period for the purpose of their use in the timing of *** A retrospective analysis of routine laboratory parameters in 53 ANP patients undergoing OPD between 2017 and 2020 was *** changes of routine hematological and biochemical indices were examined in the preoperative *** were divided into survivors and *** were divided into subgroups with short and long post-surgery length of stay(LOS)in *** analysis was used to evaluate association of laboratory variables with *** regression was used to assess risk factors for patient *** Seven patients(15%)with severe acute pancreatitis(SAP)and 46 patients(85%)with moderately SAP(MSAP)were included in the *** age of participants was 43.2 years;33(62.3%)were *** etiology included biliary(15%),alcohol(80%),and idiopathic/other(5%).Median time from diagnosis to OPD was≥4 *** postoperative LOS was at the average of 53 *** was 19%.Progressive increase of platelet count in preoperative period was associated with shortened *** aspartate aminotransferase and direct bilirubin(DB)levels the day before the OPD along with weak progressive decrease of DB in preoperative period were reliable predictors for ANP patient *** Multifactorial analysis of dynamic changes of routine labo

关键词： Acute necrotizing pancreatitis Operative pancreatic debridement timing Dynamic changes of laboratory variables Preoperative period Necrotic tissue encapsulation Hospital length of stay

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Measles virus hemagglutinin triggers intracellular signaling in CD150-expressing dendritic cells and inhibits immune response

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Cellular & Molecular Immunology 2016年第6期13卷 828-838页

作者： Olga Romanets-Korbut larysa M. Kovalevska Tsukasa Seya Svetlana P. Sidorenko Branka Horvat CIRI International Center for Infectiology Research IblVteam Universite de Lyon Lyon France Inserm U1111 Lyon France CNRS UMR5308 Lyon France Universite Lyon 1 Lyon France Ecole Normale Superieure de Lyon Lyon France R.E. Kavetsky Institute of Experimental Pathology Oncology and Radiobiology NASU Kyiv Ukraine and 7Department of Microbiology and Immunology Graduate School of Medicine Hokkaido University Kita-ku Sapporo Japan Department ofMicrobiologyand Immunology Graduate School of Medicine Hokkaido University Kita-kuSapporo Japan

Measles virus （MV） is highly contagious pathogen, which causes a profound immunosuppression, resulting in high infant mortality. This virus infects dendritic cells （DCs） following the binding of MV hemagglutinin （MV-H） to CD150 receptor and alters DC functions by a mechanism that is not completely understood. We have analyzed the effect of MV-H interaction with CD150-expressing DCs on the DC signaling pathways and consequent phenotypic and functional changes in the absence of infectious context. We demonstrated that contact between CD150 on human DCs and MV-H expressed on membrane of transfected CHO cells was sufficient to modulate the activity of two major regulatory pathways of DC differentiation and function： to stimulate Akt and inhibit p38 MAPK phosphorylation, without concomitant ERK1/2 activation. Furthermore, interaction with MV-H decreased the expression level of DC activation markers CD80, CD83, CD86, and HLA-DR and strongly downregulated IL-12 production but did not modulate IL-IO secretion. Moreover, contact with MV-H suppressed DC-mediated T-cell alloproliferation, demonstrating profound alteration of DC maturation and functions. Finally, engagement of CD150 by MV-H in mice transgenic for human CD150 decreased inflammatory responses, showing the immunosuppressive effect of CD150-MV-H interaction in vivo. Altogether, these results uncover novel mechanism of MV-induced immunosuppression, implicating modulation of cell signaling pathways following MV-H interaction with CD150-expressing DCs and reveal anti-inflammatory effects of CD150 stimulation.

关键词： dendritic cells measles virus signaling pathways SLAM/CD150

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Ultrasensitive detection of Ebola matrix protein in a memristor mode

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Nano Research 2018年第2期11卷 1057-1068页

作者： Bergoi Ibarlucea Teuku Fawzul Akbar Kihyun Kim Taiuk Rim Chang-Ki Baek Alon Ascoli Ronald Tetzlaff larysa Baraban Gianaurelio Cuniberti Institute of Materials Science Max Bergmann Center for Biomaterials Technische Universität Dresden Dresden Germany Center for Advancing Electronics Dresden (CFAED) Technische Universität Dresden Dresden Germany Department of Creative IT Engineering Pohang University of Science and Technology Pohang Republic of Korea Chair of Fundamentals of Electrical Engineering Technische Universität Dresden Dresden Germany

We demonstrate the direct biosensing of the Ebola VP40 matrix protein, using a memristor mode of a liquid-integrated nanodevice, based on a large array of honeycomb-shaped silicon nanowires. To shed more light on the principle of biodetection using memristors, we engineered the opening of the current-minima voltage gap VG by involving the third gap-control electrode （gate voltage, VG） into the system. The primary role of VG is to mimic the presence of the charged species of the desired sign at the active area of the sensor. We further showed the advantages of biodetection with an initially opened controlled gap （Vc~ ~a 0）, which allows the detection of the lowest concentrations of the biomolecules carrying arbitrary positive or negative charges; this feature was not present in previous configurations. We compared the bio-memristor performance, in terms of its detection range and sensitivity, to that of the already-known field-effect transistor （FET） mode by operating the same device. To our knowledge, this is the first demonstration of Ebola matrix protein detection using a nanoscaled electrical sensor.

关键词： memristor biosensor capacitance honeycomb nanowires silicon nanowire fieldeffect transistor VP40 matrix protein Ebola detection

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Ionic effects on the transport characteristics of nanowire-based FETs in a liquid environment

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Nano Research 2014年第3期7卷 380-389页

作者： Daijiro Nozaki Jens Kunstmann Felix Zorgiebel Sebastian Pregl larysa Baraban Walter M. Weber Thomas Mikolajick Gianaurelio Cuniberti Institute for Materials Science and Max Bergmann Center of Biomaterials TU Dresden 01062 Dresden Germany Department of Chemistry Columbia University 3000 Broadeway New York NY 10027 USA NaMlab gGmbH N6thinger Str. 64 01187 Dresden Center forAdvancing Electronics Dresden (cfAED) TU Dresden 01062 Dresden Germany Dresden Center for Computational Materials Science (DCCMS) TU Dresden 01062 Dresden Germany

For the development of ultra-sensitive electrical bio/chemical sensors based on nanowire field effect transistors （FETs）, the influence of the ions in the solution on the electron transport has to be understood. For this purpose we establish a simulation platform for nanowire FETs in the liquid environment by implementing the modified Poisson-Boltzmann model into Landauer transport theory. We investigate the changes of the electric potential and the transport characteristics due to the ions. The reduction of sensitivity of the sensors due to the screening effect from the electrolyte could be successfully reproduced. We also fabricated silicon nanowire Schottky-barrier FETs and our model could capture the observed reduction of the current with increasing ionic concentration. This shows that our simulation platform can be used to interpret ongoing experiments, to design nanowire FETs, and it also gives insight into controversial issues such as whether ions in the buffer solution affect the transport characteristics or not.

关键词： nanowire field effecttransistors (FETs) biosensors silicon nanowires Poisson-Boltzmann theory Landauer model

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Correction to: Measles virus hemagglutinin triggers intracellular signaling in CD150-expressing dendritic cells and inhibits immune response

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Cellular & Molecular Immunology 2020年第3期17卷 300-301页

作者： Olga Romanets-Korbut larysa M.Kovalevska Tsukasa Seya Svetlana P.Sidorenko Branka Horvat CIRI International Center for Infectiology ResearchUniv LyonINSERM U1111CNRS UMR5308University Claude Bernard Lyon 1ENS-LyonF-69007 LyonFrance R.E.Kavetsky Institute of Experimental Pathology Oncology and RadiobiologyNASUKyivUkraine Department of Microbiology and Immunology Graduate School of MedicineHokkaido UniversityKita-kuSapporoJapan

In this article,published online on 15 June 2015,there was an unintended error during the image processing of Figs.2 and *** Fig.2c,the time point 12 h was omitted and is included in the corrected *** 4a and b contain blots not intended for that experiment,which now have been replaced with the blots generated for that *** conclusions drawn from the presented experiments remain unaltered,and this correction has no bearing on the final outcome of the *** inconvenience caused by this error is deeply regretted.

关键词： Figure correction error

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