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Germination of Chenopodium Album in Response to Microwave Plasma Treatment

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Plasma Science and Technology 2008年第4期10卷 506-511页

作者： Bo■ena ER vitězslav STRA■K Michal ER■ Milan TICH■ petr PATENKA Institute of Systems Biology and Ecology Academy of Sciences of the Czech RepublicNa Sádkách 7CZ-370 05eské BudějoviceCzech Republic University of South Bohemia in eské Budějovice Department of PhysicsJeronymova 10CZ-371 15 eské BudějoviceCzech Republic Charles University in Prague Faculty of Mathematics and PhysicsV Holeovikách 2CZ-180 00 Praha 8Czech Republic University of South Bohemia in eské Budějovice Department of PhysicsJeronymova 10 CZ-371 15 eské BudějoviceCzech Republic Technical University of LiberecDepartment of Material SciencesHáIkova 6CZ-461 17 Liberec iCzech Republic

The seeds of Lamb＇s Quarters （Chenopodium album agg.） were stimulated by low- pressure discharge. The tested seeds were exposed to plasma discharge for different time durations （from 6 minutes to 48 minutes）. Germination tests were performed under specified laboratory conditions during seven days in five identical and completely independent experiments. Significant differences between the control and plasma-treated seeds were observed. The treated seeds showed structural changes on the surface of the seat coat. They germinated faster and their sprout accretion on the first day of seed germination was longer. Germination rate for the untreated seeds was 15% while it increased approximately three times （max 55%） for seeds treated by plasma from 12 minutes to 48 minutes.

关键词： early growth germination Lamb's Quarters seed enhancement stimulation surfatron discharge

Confining MoS_(2) nanocrystals in MOF-derived carbon for high performance lithium and potassium storage

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Green Energy & Environment 2021年第1期6卷 75-82页

作者： Chen Hu Kun Ma Yanjie Hu Aiping Chen petr Saha Hao Jiang Chunzhong Li Key Laboratory for Ultrafine Materials of Ministry of Education Shanghai Engineering Research Center of Hierarchical NanomaterialsSchool of Materials Science and EngineeringEast China University of Science&TechnologyShanghai200237China Centre of Polymer Systems University InstituteTomas Bata University in ZlinTrida T.Bati 567876001ZlinCzech Republic

Developing an efficient synthesis protocol to simultaneously control 2D nanomaterials’size and dispersion is the pivot to optimize their electrochemical ***,we report the synthesis of uniform MoS_(2) nanocrystals well-anchored into the void space of porous carbon(donated as MoS_(2)3C hybrids)by a simple confined reaction in metal–organic framework(MOF)during carbonization *** strong confinement effect refrain MoS2 growth and aggregation,generating abundant active centers and edges,which contribute fast lithium/potassium reaction *** addition to the hybridization with the derived carbon,the MoS_(2)3C hybrids exhibit rapid Liþtransfer rate(~109 cm^(2) s 1)and greatly improved electronic ***,the MoS23C hybrids show ultrafast rate performances and satisfactory cycling stabilities as anode materials for both lithium and potassium ion *** work demonstrates a universal tactic to achieve high dispersive 2D nanomaterials with tailorable particle size.

关键词： Confined reaction MoS_(2) Nanocrystals Metal–organic framework Energy storage

Immunology and immunotherapy in breast cancer

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Cancer Biology & Medicine 2022年第5期19卷 609-618页

作者： vladimir Semiglazov Andrey Tseluiko Asel Kudaybergenova Anna Artemyeva petr Krivorotko Roman Donskih petrov National Medicine Cancer-Research Center Ministry of Health Saint-Petersburg 197758Russia

Immuno-oncology is a rapidly developing field in *** combination therapies have already been studied in many clinical trials on various tumor *** recent years,a checkpoint inhibition therapy with monoclonal antibodies targeting PD-1 and its ligand PD-L1 has been *** cancer had been examined in the field of immune-oncology relatively *** review focuses on clinical evidence regarding immune checkpoint inhibition for curative treatment of various breast cancer *** addition,we present the results of studies demonstrating the prognostic and predictive value of levels of tumorinfiltrating lymphocytes(CD4 and CD8),their quantitative ratios,and their correlation with regulatory genes(PD-1,PD-L1,and FOX-P3).

关键词： Breast cancer tumor-infiltrating lymphocytes PD-1 PD-L1 immunotherapy

Experimental investigation on local shear stress and turbulence intensities over a rough non-uniform bed with and without sediment using 2D particle image velocimetry

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International Journal of Sediment Research 2020年第2期35卷 193-202页

作者： petr Lichtneger Christine Sindelar Johannes Schobesberger Christoph Hauer Helmut Habersack CD-Laboratory of Sediment Research and Management Institute of Water ManagementHydrology and Hydraulic EngineeringDepartment Water-Atmosphere-EnvironmentUniversity of Natural Resources and Life Sciences

The current work focuses on locally resolving velocities,turbulence,and shear stresses over a rough bed with locally non-uniform character.A nonporous subsurface layer and fixed interfacial sublayer of gravel and sand were water-worked to a nature-like bed form and additionally sealed in a hydraulic ***-dimensional Particle Image velocimetry(2 D-PIv) was applied in the vertical plane of the experimental flume *** with clear water and weak sediment transport were done under slightly supercritical flow to ensure sediment transport conditions without formation of considerable sediment deposits or *** study design included analyzing the double-averaged flow parameters of the entire measurement domain and investigating the flow development at 14 consecutive vertical *** geometrical variabilities as well the presence of sediment were mainly reflected in the vertical velocity *** the vertical velocity decreased over the entire depth in presence of sediment transport,the streamwise velocity profile was reduced only within the interfacial *** the region with decelerating flow conditions,however,the streamwise velocity profile systematically increased along the entire depth *** increase in the main velocity(reduction of flow resistance)correlated with a decrease of the turbulent shear and main normal ***,effects of rough bed smoothening and drag force reduction were experimentally documented within the interfacial sublayer due to mobile ***,the current study leads to the conclusion that in nonuniform flows the maximum Reynolds stress values are a better predictor for the bed shear stress than the linearly extrapolated Reynolds stress *** is an important finding because,in natural flows,uniform conditions are rare.

关键词： Turbulence measurement Local bed shear stress Sediment transport and flow interaction Hydraulic flume experiment Particle image velocimetry

Amorphous Ge-Sb-Se-Te chalcogenide films fabrication for potential environmental sensing and nonlinear photonics

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Journal of Materiomics 2022年第5期8卷 1009-1019页

作者： Tomas Halenkovic Marion Baillieul Jan Gutwirth petr Nemec virginie Nazabal Department of Graphic Arts and Photophysics Faculty of Chemical TechnologyUniversity of PardubiceStudentska 57353210PardubiceCzech Republic Univ Rennes CNRSISCR(Institut des Sciences Chimiques de Rennes)e UMR 6226F-35000RennesFrance

Quaternary Ge-Sb-Se-Te chalcogenide thin films were fabricated by rf magnetron sputtering from Ge_(19)Sb_(17)Se_(64-x)Te_(x)(x=5,10,15,20)sputtering targets in order to select appropriate compositions for infrared sensor and optical nonlinear *** influence of chemical composition and deposition parameters on the optical properties,structure and wettability was thus *** amorphous thin films seem to be constituted by selenide entities that can include tellurium atoms in variable proportion such as[GeSe_(4-x)Te_(x)]and[SbSe_(3-x)Te_(x)](x=0,1,2)and Ge(Sb)-Ge(Sb)bonds according to Raman *** angle measurements of the thin films showed values of 68e71for water and their surface energies in the range of~36e39 mJ$m-2 seem suitable for surface functionalization required for photonic sensor ***,the maximum nonlinearity at the telecom wavelength with respect to the highest figure of merit value was found for the thin film with composition Ge_(19)Sb_(17)Se56Te8 having nonlinear refractive index of 28×10^(-18) m2·W^(-1).Due to their low optical bandgap energies,they may find their full interest for nonlinear optics in the mid-infrared *** IR transparency in combination with high(non)linear refractive indices make these materials attractive in the field of midIR sensing and optical nonlinear devices.

关键词： Chalcogenide Thin films Glass Amorphous Optical properties NLO Contact angles Sputtering Raman

It is time to change land use and landscape management in the Czech Republic

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Ecosystem Health and Sustainability 2015年第9期1卷 1-7页

作者： petr petrik Josef Fanta Martin petrtyl Institute of Botany Czech Academy of SciencesZamek 125243 PruhoniceCzech Republic Ke Kralum 1109 25229 DobrichoviceCzech Republic

The identity of man-made landscapes is based on the balance among their ecological,cultural,and economic *** the 1950s,short-term economic benefits have globally often outweighed long-term *** results in decreased landscape quality manifested as increased erosion of agricultural land,decreased water retention capacity,increased landscape uniformity,and loss of biodiversity.A new phenomenon influencing the condition of man-made landscapes is climate *** fluctuations of temperature and precipitation have been causing repeated floods and also periods of drought in *** damaged by inappropriate management are unable to offset these *** is necessary to stop this development by changing land use and management methods to restore the balance among landscape *** the Czech Republic,we propose to develop a long-term landscape vision and to formulate a responsible landscape policy with regional strategic goals,including subsidies and penalties(carrots and sticks),based on the principles of the European Landscape *** promote ecological stability,we recommend allocating funds from the Common Agricultural Policy to both the restoration and maintenance of valuable *** research and management(based on habitat/species monitoring in cooperation with stakeholders)must be strengthened in order to play a proper role in the *** is time for clear communication with the public and the training of state officials and land users in spatial and landscape *** fill this gap in interdisciplinary cooperation,we call for the establishment of a platform on sustainable landscape management in the Czech Republic.

关键词： biodiversity loss Central Europe Czech Republic degradation ecosystem management in transition in Central and Eastern Europe European Landscape Convention landscape transformation land-use planning soil and water quality Special Feature:Ecosystem Management in Transition in Central and Eastern Europe sustainable management

Q-P Process Optimization With the Use of Quenching Dilatometer

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Journal of Iron and Steel Research International 2011年第S1期18卷 417-421页

作者： Hauserová Daniela Novy Zbysek Motyka petr Dzugan Jan COMTES FHT a.s. Prumyslová 995334 41 DobranyCzech Republic

The current efforts in production of low-alloyed steels are aimed at achieving high ultimate and yield strengths,while maintaining sufficient elongation and good weldability in these *** advanced heat treatment processes capable of reaching this goal,there is also the Q-P process (Quenching and Partitioning).The process consists in rapid quenching of the material between the M s and M f temperatures in order to prevent full martensitic *** immediately following heating leads to tempering of the martensite and to diffusion of excess carbon from martensite to retained *** increases the stability of the *** aim of the Q-P process is to produce very fine martensite microstructure with retained austenite between martensite *** experimental programme was carried out on a high-strength low-alloyed steel containing 0.2% carbon and a higher amount of silicon about 1.5%.Higher silicon content in the microstructure contributes to stabilization of retained austenite by suppressing formation of *** grade of steel is an advantageous material thanks to its low amount of alloying *** group of low-alloyed steels,if heat treated or thermomechanically treated in a suitable manner,offers a favourable combination of strength,elongation and *** paper is aimed at possibility of the Q-P process optimization with the use of quenching *** experimental material is CMnSiMo *** process optimization consists of standard samples treatment in laboratory furnaces and *** procedure can be time consuming with higher requirements on the experimental ***,it was proposed that the Q-P process optimization can be done with the use of quenching dilatometer and in this way the development of new procedures can be accelerated.Q-P processes were conducted in the standard way and with the aid of a *** of the obtained results provided by the standard procedure and

关键词： Q-P process dilatometer low-alloyed steel

Helicobacter pylori infection and other bacteria in pancreatic cancer and autoimmune pancreatitis

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World Journal of Gastrointestinal Oncology 2021年第8期13卷 835-844页

作者： Lumir Kunovsky petr Dite petr Jabandziev Jiri Dolina Jitka vaculova Martin Blaho Martina Bojkova Jana Dvorackova Magdalena Uvirova Zdenek Kala Jan Trna Department of Surgery University Hospital Brno and Faculty of MedicineMasaryk UniversityBrno 62500Czech Republic Department of Gastroenterology and Internal Medicine University Hospital Brno and Faculty of MedicineMasaryk UniversityBrno 62500Czech Republic Department of Gastroenterology and Internal Medicine University Hospital OstravaOstrava 70800Czech Republic Faculty of Medicine University of OstravaOstrava 70300Czech Republic Department of Pediatrics University Hospital Brno and Faculty of MedicineMasaryk UniversityBrno 61300Czech Republic Central European Institute of Technology Masaryk UniversityBrno 62500Czech Republic Department of Intensive Medicine Emergency Medicine and Forensic StudiesUniversity Hospital OstravaOstrava 70800Czech Republic CGB Laboratory a.s.Ostrava Ostrava 70300Czech Republic Department of Gastroenterology and Digestive Endoscopy Masaryk Memorial Cancer InstituteBrno 65653Czech Republic Department of Internal Medicine Hospital BoskoviceBoskovice 68001Czech Republic

Helicobacter pylori(***)is an infectious agent influencing as much as 50%of the world’s *** is the causative agent for several diseases,most especially gastric and duodenal peptic ulcer,gastric adenocarcinoma and mucosaassociated lymphoid tissue lymphoma of the stomach.A number of other,extragastric manifestations also are associated with *** *** include neurological disorders,such as Alzheimer’s disease,demyelinating multiple sclerosis and Parkinson’s *** is also evidence for a relationship between *** infection and such dermatological diseases as psoriasis and rosacea as well as a connection with infection and open-angle *** little is known about the relationship between *** infection and diseases of the *** evidence about *** and its potential role in the development of pancreatic diseases concerns pancreatic adenocarcinoma and autoimmune forms of chronic *** is data(albeit not fully consistent)indicating modestly increased pancreatic cancer risk in ***-positive *** pathogenetic mechanism of this increase is not yet fully elucidated,but several theories have been *** of antral Dcells in ***-positive patients causes a suppression of somatostatin secretion that,in turn,stimulates increased secretin *** stimulates pancreatic growth and thus increases the risk of ***,***,as a part of microbiome dysbiosis and the so-called oncobiome,is proven to be associated with pancreatic adenocarcinoma development via the promotion of cellular *** role of *** in the inflammation characteristic of autoimmune pancreatitis seems to be explained by a mechanism of molecular mimicry among several proteins(mostly enzymes)of *** and pancreatic *** with autoimmune pancreatitis often show positivity for antibodies against *** ***,as a part of microbiome dysbiosis,also

关键词： Helicobacter pylori Pancreatic cancer Autoimmune pancreatitis Carcinogenesis Microbiome Molecular mimicry

Clinical and socioeconomic determinants of survival in biliary tract adenocarcinomas

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World Journal of Gastrointestinal Oncology 2024年第4期16卷 1374-1383页

作者： Laura Sahyoun Kay Chen Cynthia Tsay George Chen petr Protiva Department of Gastroenterology and Hepatology Weill Cornell MedicineNew YorkNY 10065United States Gastroenterology Section Jennifer Moreno VA San Diego Healthcare SystemSan DiegoCA 92161United States Division of Gastroenterology Department of MedicineUniversity of California San DiegoLa JollaCA 92093United States Department of Gastroenterology and Hepatology John Hopkins HospitalBaltimoreMD 21287United States Department of Digestive Diseases Yale New Haven HospitalNew HavenCT 06520United States Department of Gastroenterology VA Connecticut Health Care SystemWest HavenCT 06516United States

BACKGROUND Despite advances in detection and treatments,biliary tract cancers continue to have poor survival ***,there is limited data investigating the significance of socioeconomic status,race/ethnicity,and environmental factors in biliary tract cancer *** from the Surveillance,Epidemiology,and End Results database for biliary and gallbladder adenocarcinomas were extracted from 1975 to ***-conomic data included smoking,poverty level,education,adjusted household income,and percentage of foreign-born persons and urban *** was calculated with Cox proportional hazards models for death in the 5-year period following *** Our study included 15883 gallbladder,11466 intrahepatic biliary,12869 extrahepatic biliary and 7268 ampulla of vater adenocarcinoma *** analyzing county-specific demographics,patients from counties with higher incomes were associated with higher survival rates[hazard ratio(HR)=0.97,Pvel education and counties with a higher urban population had higher 5-year survival rates(HR=0.96,P=0.002 and HR=0.97,P=0.004,respectively).CONCLUSION Worse survival outcomes were observed in lower income counties while higher income and education level were associated with higher 5-year overall survival among gallbladder and biliary malignancies.

关键词： Biliary tract cancers Survival Outcomes research Socioeconomic factors Healthcare disparities