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A versatile interferometric technique for probing the thermophysical properties of complex fluids

Light(Science & Applications) 2022年第5期11卷 979-990页

作者： Gopal Verma Gyanendra Yadav Chaudry Sajed Saraj Longnan Li Nenad Miljkovic jean pierre Delville Wei Li GPL Photonics Lab State Key Laboratory of Applied OpticsChangchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of Sciences130033 ChangchunChina School of Physical Sciences University of LiverpoolLiverpool L693BXUK Materials Research Laboratory University of IllinoisUrbanaILUSA Department of Mechanical Science and Engineering University of IllinoisUrbanaILUSA Department of Electrical and Computer Engineering University of IllinoisUrbanaILUSA International Institute for Carbon Neutral Energy Research(WPI-I2CNER) Kyushu University744 MotookaNishi-kuFukuoka 819-0395Japan University of Bordeaux CNRSLOMAUMR 5798F-33405 TalenceFrance

Laser-induced thermocapillary deformation of liquid surfaces has emerged as a promising tool to precisely characterize the thermophysical properties of pure ***,challenges arise for nanofluid(NF)and soft biofluid systems where the direct interaction of the laser generates an intriguing interplay between heating,momentum,and scattering forces which can even damage soft ***,we report a versatile,pump-probe-based,rapid,and non-contact interferometric technique that resolves interface dynamics of complex fluids with the precision of~1 nm in thick-film and 150 pm in thin-film regimes below the thermal limit without the use of lock-in or modulated *** characterize the thermophysical properties of complex NF in three exclusively different types of ***,when the NF is heated from the bottom through an opaque substrate,we demonstrate that our methodology permits the measurement of thermophysical properties(viscosity,surface tension,and diffusivity)of complex NF and ***,in a top illumination configuration,we show a precise characterization of NF by quantitively isolating the competing forces,taking advantage of the different time scales of these ***,we show the measurement of NF confined in a metal cavity,in which the transient thermoelastic deformation of the metal surface provides the properties of the NF as well as thermo-mechanical properties of the *** results reveal how the dissipative nature of the heatwave allows us to investigate thick-film dynamics in the thin-film regime,thereby suggesting a general approach for precision measurements of complex NFs,biofluids,and optofluidic devices.

关键词： deformation thermophysical film

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Landscape effects on the thermotolerance of carabid beetles and the role of behavioral thermoregulation

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Insect Science 2023年第1期30卷 251-263页

作者： Luck Alford Sacha Roudine jean-Sébastien pierre Francoise Burel Joan van Baaren UMR 6553 ECOBIO Universitede Rennes 1Rennes CedexFrance School of Biological Sciences Universityof BristolBristolUK

Physiological thermotolerance and behavioral thermoregulation are central to seasonal cold adaptation in ectothermic *** species with enhanced mobility,behavioral responses may be of greater importance in the cold stress *** the carabid beetles as a study organism,the current study compared physiological thermotolerance and behavioral thermoregulation in carabid species inhabiting cereal fields in different landscape contexts,from fine grain heterogeneous“complex”landscapes to homogenous“simple”*** thermotolerance was determined via measurement of the CTmin and chill coma *** responses to cold temperature exposure were determined employing a purpose built arena,and thoracic temperature measured to estimate the efficacy of the behavior as a form of behavioral *** revealed an influence of landscape composition on the cold tolerance of carabid beetles,although species differed in their sensitivity to landscape intensification.A reduced effect of landscape on the thermotolerance of larger carabid beetles was observed,thought to be the consequence of greater mobility preventing local acclimation to microclimatic variation along the landscape intensification *** into behavioral thermoregulation of the 3 largest species revealed burrowing behavior to be the main behavioral response to cold stress,acting to significantly raise carabid body *** finding highlights the importance of behavioral thermoregulation as a strategy to evade cold *** use of behavioral thermoregulation may negate the need to invest in physiological thermotolerance,further offering explanation for the lack of landscape effect on the physiological thermotolerance of larger carabids.

关键词： agroecosystems local adaptation physiological thermal tolerance plasticity winter resistance

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Hole-doping induced ferromagnetism in 2D materials

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npj Computational Materials 2022年第1期8卷 2180-2189页

作者： Ruishen Meng Lino da Costa Pereira jean-pierre Locquet Valeri Afanas’ev Geoffrey Pourtois Michel Houssa Department of Physics and Astronomy KU LeuvenCelestijnenlaan 200DLeuvenB-3001Belgium imec Kapeldreef 75B-3001LeuvenBelgium

Two-dimensional(2D)ferromagnetic materials are considered as promising candidates for the future generations of spintronic ***,2D materials with intrinsic ferromagnetism are ***,high-throughput first-principles simulations are performed to screen 2D materials that present a non-magnetic to a ferromagnetic transition upon hole doping.A global evolutionary search is subsequently performed to identify alternative possible atomic structures of the eligible candidates,and 122 materials exhibiting a hole-doping induced ferromagnetism are *** energetic and dynamic stability,as well as magnetic properties under hole doping are investigated *** of these 2D materials are metal halides,followed by chalcogenides,oxides,and nitrides,some of them having predicted Curie temperatures above 300 *** exchange interactions responsible for the ferromagnetic order are also *** work not only provides theoretical insights into hole-doped 2D ferromagnetic materials,but also enriches the family of 2D magnetic materials for possible spintronic applications.

关键词： ferromagnetic doping materials

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DNA methylation signature predicts cancer response to demethylation agents from profiling diverse cancer cell lines

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Cancer Communications 2022年第8期42卷 789-792页

作者： Zhifu Sun Xuewei Wang Pete Vedell jean-pierre Kocher Division of Computational Biology Department of Quantitative Health SciencesMayo ClinicRochesterMN 55905USA

Dear Editor,Abnormal DNA methylation,a process whereby tumor suppressors tend to be hypermethylated and silenced,is a hallmark of cancer cells[1].Removing the methylation by demethylation agents such as azacitidine and decitabine is one of the strategies to treat cancers and has been successfully used to treat certain hematological and solid tumors[2].However,there are no established DNA methylation markers or signatures that can accurately predict patients’response to treatment[2];thus,the identification of reliable predictive biomarkers for effective therapy remains a critical need in clinical practice.

关键词： cancer signature suppressor

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High-flow nasal cannula oxygen therapy in acute hypoxemic respiratory failure and COVID-19-related respiratory failure

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Journal of Intensive Medicine 2023年第1期3卷 20-26页

作者： jean-pierre Frat Laura Marchasson François Arrivé Rémi Coudroy Centre Hospitalier Universitaire de Poitiers Médecine Intensive RéanimationPoitiers 86021France Centre d'Investigation Clinique 1402 ALIVE INSERMUniversitéde PoitiersPoitiers 86021France

Although standard oxygen face masks are first-line therapy for patients with acute hypoxemic respiratory failure,high-flow nasal cannula oxygen therapy has gained major popularity in intensive care *** physiological effects of high-flow oxygen counterbalance the physiological consequences of acute hypoxemic respiratory failure by lessening the deleterious effects of intense and prolonged inspiratory efforts generated by *** simplicity of application for physicians and nurses and its comfort for patients are other arguments for its use in this *** clinical studies have reported a decreased risk of intubation with high-flow oxygen compared with standard oxygen,its survival benefit is uncertain.A more precise definition of acute hypoxemic respiratory failure,including a classification of severity based on oxygenation levels,is needed to better compare the efficiencies of different non-invasive oxygenation support methods(standard oxygen,high-flow oxygen,and non-invasive ventilation).Additionally,the respective role of each non-invasive oxygenation support method needs to be established through further clinical trials in acute hypoxemic respiratory failure,especially in severe forms.

关键词： High-flow nasal oxygen Acute respiratory failure COVID-19 Oxygen support

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Illumination and regolith temperature at China's next candidate lunar landing site Shackleton crater

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Science China Earth Sciences 2023年第2期66卷 417-429页

作者： Zhen ZHONG Jianguo YAN Huaiyu HE Qiling WEN Deyun LIU jean-pierre BARRIOT School of Physics and Electronic Science Guizhou Normal UniversityGuiyang550025China State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan430079China Institute of Geology and Geophysics Chinese Academy of SciencesBeijing100029China Beijing Spacecraft Manufacturing Co. LtdBeijing100094China Observatory Geodetic de Tahiti BP 657098702Faa’aTahitiFrench Polynesia

This study focuses on the illumination and temperature at China’s next lunar candidate landing site Shackleton *** used the NASA’s SPICE system to evaluate the terrain obscuration effect on real-time illumination;the resulting illumination map resembles previous studies,validating the methodologies used in our *** addition,we estimated an accumulated illumination map for the period of likely rover *** map indicates the illuminated inner wall of the Shackleton crater is close to 27%of the whole,meaning that the rover will likely receive solar radiation during its *** the real-time illumination and the distributed 1-D thermal diffusion model,we continuously evaluated the regolith temperature for more than 20 years to stabilize the temperature,and selected the temperature of the end time as the initial value used in a thermal study set for July 20,2023 and May 8,*** results indicate the temperature in the permanent shadow region remains nearly constant,thus validating the stability of our estimated initial *** results also indicate that the surface temperature is more sensitive to transient illumination,but the subsurface temperature is more likely to be associated with the accumulated *** difference indirectly implies that the conductivity of the lunar regolith is *** locations receiving more solar radiation show a temperature larger than the threshold(~112 K)of ice *** permanently shadowed regions can be as cold as 25 K,and such extreme coldness is a hazard to the *** are suitable temperature locations which have a warm surface but cold subsurface to preserve water *** further ensure normal rover movement,we provided a map of suitable temperature sites and found that these locations exist not only in the Shackleton crater’s inner wall,but also outside the *** suggested four trade-off sampling sites with suitable temperatures and gradual slopes.

关键词： Real-time illumination Regolith temperature Shackleton crater Map of landing site

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Development of a Medium Voltage, High Power, High Frequency Four-Port Solid State Transformer

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CES Transactions on Electrical Machines and Systems 2022年第1期6卷 95-104页

作者： Ahmad El Shafei Saban Ozdemir Necmi Altin Garry jean-pierre Adel Nasiri IEEE Department of Electrical Engineering University of Wisconsin Milwaukee Department of Electrical-Electronic Engineering Faculty of TechnologyUniversity of Gazi Department of Electrical Engineering University of South Carolina

The power and voltage levels of renewable energy resources is growing with the evolution of the power electronics and switching module *** that,the need for the development of a compact and highly efficient solid-state transformer is becoming a critical task in-order to integrate the current AC grid with the new renewable energy *** objective of this paper is to present the design,implementation,and testing of a compact multi-port solid-state transformer for microgrid integration *** proposed system has a four-port transformer and four converters connected to the *** transformer has four windings integrated on a single common ***,it can integrate different renewable energy resources and energy storage *** port has a rated power of 25 kW,and the switching frequency is pushed to 50 k *** ports are chosen to represent a realistic industrial microgrid model consisting of grid,energy storage system,photovoltaic system,and *** grid port is designed to operate at 4.16 k VAC corresponding to 7.2 kV DC bus voltage,while the other three ports operate at 500 ***,the grid,energy storage and photovoltaic ports are active ports with dual active bridge topologies,while the load port is a passive port with full bridge rectifier *** proposed design is first validated with simulation results,and then the proposed transformer is implemented and *** results show that the designed system is suitable for 4.16 k VAC medium voltage grid integration.

关键词： Co-simulation high frequency high power medium voltage microgrid Multi-port solid state transformer

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New anticancer drugs in Europe

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Chinese Medical Journal 1997年第4期110卷 58-69页

作者： jean pierre Armand Department of Medicine Institute Gustave Roussy Vilejuif France

ＮｅｗａｎｔｉｃａｎｃｅｒｄｒｕｇｓｉｎＥｕｒｏｐｅＪｅａｎＰｉｅｒｅＡｒｍａｎｄＦｏｒｔｈｅｎｅａｒｆｕｔｕｒｅ，ｓｙｓｔｅｍｉｃｃｈｅｍｏｔｈｅｒａｐｙｗｉｌｂｅｔｈｅｍａｉｎｓｔａｙｏｆｔｒｅａｔｍｅｎｔｉｎｍ... 详细信息

ＮｅｗａｎｔｉｃａｎｃｅｒｄｒｕｇｓｉｎＥｕｒｏｐｅＪｅａｎＰｉｅｒｅＡｒｍａｎｄＦｏｒｔｈｅｎｅａｒｆｕｔｕｒｅ，ｓｙｓｔｅｍｉｃｃｈｅｍｏｔｈｅｒａｐｙｗｉｌｂｅｔｈｅｍａｉｎｓｔａｙｏｆｔｒｅａｔｍｅｎｔｉｎｍｅｔａｓｔａｔｉｃｃａｎｃｅｒ．Ｉ...

关键词： ADVANCED BREAST-CANCER CLINICAL-TRIALS GROUP CELL LUNG-CANCER PHASE-I TRIAL ETOPOSIDE PHOSPHATE VINORELBINE IRINOTECAN AGENT IODODOXORUBICIN SURAMIN

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Exploration, explanation and exploitation of hydroxyls in zeolites

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National Science Review 2022年第9期9卷 8-9页

作者： Eddy Dib Edwin B.Clatworthy Hugo Cruchade Izabel C.Medeiros-Costa Nikolai Nesterenko jean-pierre Gilson Svetlana Mintova Laboratory of Catalysis and Spectrochemistry(LCS) Normandy University National Graduate School of Engineering of Caen(ENSICAEN) French National Center for Scientific Research(CNRS) Total Energies Research and Technology

The ideal crystalline framework of zeolites is perturbed by hydroxyl groups. In pure silica zeolites the framework is neutral, however, the introduction of Al3+into the Si4+oxide framework creates negative charges, giving rise to Br?nsted acid sites (BASs). O?ten referred to as bridged hydroxyls [Si–O(H)–Al], they are formed when a proton is bound to one of the oxygens adjacent to an aluminum.

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Foreword to the special section on synchronous programming

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Frontiers of Computer Science 2013年第5期7卷 595-597页

作者： jean-pierre TALPIN INRIA Rennes-Bretagne-Atlantique Rennes 35042 France

1 Introduction Embedded systems are ubiquitous. In applications ranging from avionics, automotive, and industrial process control all the way to the handheld personal digital assistants （PDAs）, cell phones, and bio-...

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