A5067139110- Nuclear physics research studies
- Nuclear Physics and Applications
- Astronomical and nuclear sciences
- Atomic and Molecular Physics
- Biomimetic flight and propulsion mechanisms
- Spacecraft and Cryogenic Technologies
- Fluid Dynamics and Turbulent Flows
- Superconducting Materials and Applications
- Refrigeration and Air Conditioning Technologies
- Aerodynamics and Fluid Dynamics Research
- Gut microbiota and health
- Nuclear reactor physics and engineering
- Wind Energy Research and Development
- Advanced Thermodynamic Systems and Engines
- Plant responses to water stress
- Aerospace Engineering and Energy Systems
- Plant Disease Resistance and Genetics
- Cold Fusion and Nuclear Reactions
- Advanced NMR Techniques and Applications
- Cavitation Phenomena in Pumps
- Power Systems and Technologies
- Soybean genetics and cultivation
- Probiotics and Fermented Foods
- Power Systems and Renewable Energy
- Superconductivity in MgB2 and Alloys
Aerospace Center Hospital
2023-2024
Institute of Modern Physics
2019-2024
Chinese Academy of Sciences
2013-2024
Design Science (United Kingdom)
2023
Heilongjiang Academy of Agricultural Machinery Engineering
2021-2022
Institute of Engineering Thermophysics
2013-2020
Technical Institute of Physics and Chemistry
2019-2020
University of Chinese Academy of Sciences
2019
This paper presents an experimental investigation of the control airfoil aerodynamics at a low Reynolds number within wide range attack angle using leading-edge-protuberance technique. The essence technique is to manipulate flow around by replacing straight leading edge baseline with sinusoidal wavy airfoil. Whereas lift and drag forces lift-to-drag ratio were measured three-component force balance, was mainly particle-image velocimetry. protuberances effectively suppressed stall,...
A new $\alpha$-emitting isotope $^{214}$U, produced by fusion-evaporation reaction $^{182}$W($^{36}$Ar, 4n)$^{214}$U, was identified employing the gas-filled recoil separator SHANS and recoil-$\alpha$ correlation technique. More precise $\alpha$-decay properties of even-even nuclei $^{216,218}$U were also measured in reactions $^{40}$Ar, $^{40}$Ca with $^{180, 182, 184}$W targets. By combining experimental data, improved reduced widths $\delta^2$ for Po--Pu vicinity magic neutron number...
Using the fusion-evaporation reaction ^{106}Cd(^{58}Ni,4n)^{160}Os and gas-filled recoil separator SHANS, two new isotopes _{76}^{160}Os _{74}^{156}W have been identified. The α decay of ^{160}Os, measured with an α-particle energy 7080(26) keV a half-life 201_{-37}^{+58} μs, is assigned to originate from ground state. daughter nucleus ^{156}W β^{+} emitter 291_{-61}^{+86} ms. newly α-decay data allow us derive reduced widths (δ^{2}) for N=84 isotones up osmium (Z=76), which are found...
The fusion-evaporation reaction $^{40}\mathrm{Ca}+^{175}\mathrm{Lu}$ aimed at synthesizing new neutron-deficient protactinium isotopes has been studied the gas-filled recoil separators SHANS and SHANS2. cross sections for $xn$ $pxn$ evaporation channels were measured. calculation by statistical model HIVAP was performed to reproduce experimental data. quasifission process in also with time-dependent Hartree-Fock theory improved quantum molecular dynamics model. It is shown that influence of...
The isomeric state in $^{213}\mathrm{Th}$ was re-investigated via the reaction $^{40}\mathrm{Ar} + ^{176}\mathrm{Hf}$ at gas-filled recoil separator Spectrometer for Heavy Atoms and Nuclear Structure. digital pulse readout technique employed to record signals, which enables feature of dead-time-less data acquisition. Based on $\mathrm{evaporation}\phantom{\rule{0.28em}{0ex}}\mathrm{residue}\text{\ensuremath{-}}\ensuremath{\gamma}\text{\ensuremath{-}}\ensuremath{\alpha}$ correlation analysis,...
The isotopes $^{261,262}\mathrm{Bh}$ were reinvestigated by using the cold fusion reaction $^{54}\mathrm{Cr}+^{209}\mathrm{Bi}$. evaporation residues separated gas-filled recoil separator SHANS2 (Spectrometer for Heavy Atoms and Nuclear Structure-2) identified means of recoil-$\ensuremath{\alpha}$-correlation method. $\ensuremath{\alpha}$-decay properties measured results are consistent with previously reported values. Based on half-lives, existence two distinct states $^{262}\mathrm{Bh}$...
A series of fusion evaporation reactions induced by the $^{54}\mathrm{Cr}^{17+}$ beam have been performed using gas-filled recoil separator SHANS2. The excitation functions $^{54}\mathrm{Cr}+^{159}\mathrm{Tb}$ and $^{54}\mathrm{Cr}+^{165}\mathrm{Ho}$ were measured. systematics cross sections for with $^{40}\mathrm{Ar}, ^{48}\mathrm{Ca}, ^{50}\mathrm{Ti}$, $^{54}\mathrm{Cr}$ projectiles are compiled discussed. It is suggested that employing holds potential synthesizing neutron-deficient...
The control of a typical extreme load with varying velocity and direction, i.e., International Electro-technical Commission Extreme Coherent Gust Direction Change (ECD) load, was investigated on an Upwind/National Renewable Energy Laboratory 5 MW reference wind turbine using newly developed smart blade system. action implemented through the local perturbation Deformable Trailing Edge Flap (DTEF) surface thus flow-blade investigations were separately conducted within four time zones,...
The heaviest $N$ = 127 even-odd isotone $^{219}\mathrm{U}$ was produced in a fusion evaporation reaction employing $^{40}\mathrm{Ar}$ ions bombarding $^{183}\mathrm{W}$ target. Fusion residues were separated flight by the gas-filled recoil separator Spectrometer for Heavy Atoms and Nuclear Structure subsequently identified using recoil-$\ensuremath{\alpha}$ correlation method. $\ensuremath{\alpha}$-decay properties of measured with improved precision, two new lines observed assigned as...
The extremely neutron-deficient even-even uranium isotopes $^{216,218}\mathrm{U}$ were produced in the complete-fusion reactions induced by impinging $^{40}\mathrm{Ar}$ and $^{40}\mathrm{Ca}$ ions on $^{180,182,184}\mathrm{W}$ targets. Fusion evaporation residues separated flight gas-filled recoil separator SHANS (Spectrometer for Heavy Atoms Nuclear Structure) subsequently identified using recoil-$\ensuremath{\alpha}$-correlation method. improved ground-state to $\ensuremath{\alpha}$-decay...
Cold compressors are key components in large scale superfluid helium refrigerators. A cryogenic performance experimental system for centrifugal cold is under development; this mainly consists of a warm compressor station, compressors, valves, box, sub-cooling heat exchanger and sub-atmospheric heater. The flow scheme has been specially designed so that with rate less than 30 g/s inlet temperatures between 3 K 20 can be tested. An innovative heater to guarantee good transfer efficiency the...
The Prevotella genus consists of obligate anaerobic Gram-negative bacteria that are symbiotic with the oral, intestinal, and vaginal mucosa. While several species have been implicated in pulmonary infections, identification as causative agent lung abscess is uncommon because requirement for stringent culture conditions. In this report, we highlight a case caused by salivae veroralis, underscoring importance third-generation metagenomic sequencing using devices from Oxford Nanopore...
Complex microbial ecosystems in both gastrointestinal and respiratory systems have been found to a significant impact on human health. Growing evidence has demonstrated that intestinal dysbiosis can increase vulnerability pulmonary infections. However, changes the composition activity of flora after probiotic supplementation may alter disease state host. The effects probiotics improvement diseases, such as severe pneumonia (SP), intensive care units (ICUs) remain controversial. We...
Searches for new americium isotopes with neutron number around 126 are made in bombardments of $^{191,193}\mathrm{Ir}$ targets $^{40}\mathrm{Ar}$ ions by employing the gas-filled recoil separator SHANS and recoil-$\ensuremath{\alpha}$ correlation technique. No evidence nuclides interest is obtained, upper limits cross sections producing evaporation residues estimated to be 31.4 pb 5.4 reactions $^{40}\mathrm{Ar}+^{193}\mathrm{Ir}$ $^{40}\mathrm{Ar}+^{191}\mathrm{Ir}$, respectively. We have...
Abstract Large scale helium liquefaction/refrigeration plant plays a vital role in advanced large equipment such as fusion reactors and accelerators. A new liquefaction cycle with double stage compressor is proposed this paper, which different from the Collins cycle. The gas divided into two parts. medium-pressure one part flows through heat exchangers liquefied by throttling valve. other part, high-pressure turbine for adiabatic expansion decrease of its temperature pressure. Both...
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Abstract A key step in optimising a centrifugal impeller is the parametrisation of blade profile, which could easily call for many control parameters to define profile with high-enough resolution and smoothness. As number increases, complexity optimisation amplified drastically, resulting skyrocketing demand computational resources time. For industry, rather than design methods guidelines, are available good textbooks, it accurate yet fast affordable product development aiming achieve...
A 40L/h helium liquefier has developed by Technical Institute of Physics and Chemistry, Chinese Academy Sciences. It uses ATEKO's electromagnetic bearing turbine expanders KAISER's screw compressor as its main components. Its control system the SIEMENS PLC S7-300 related programming software Step7 V5.5 process monitoring WinCC V7.2. The strategies machine mainly include three parts. One is to ensure supply enough power refrigeration mass flow; another turbines capacity; finally make dewar...
Abstract With the development of cryogenics, demand cryogenic liquid increases constantly. However, there are some difficulties to control and adjust extraction especially for helium. Compared with immersed pump, ejector has huge advantages in pumping from Dewar, like stable operation simple structure. Considering similarity between nitrogen helium high cost conduct experiment, this paper reports a research on temperature range. The experiment platform customized was set up injection...