Kai Ouyang

ORCID: 0000-0003-4163-3106
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About
Contact & Profiles
Research Areas
  • Laser-Plasma Interactions and Diagnostics
  • Laser-Matter Interactions and Applications
  • Atomic and Molecular Physics
  • Pulsed Power Technology Applications
  • Plant Virus Research Studies
  • Wheat and Barley Genetics and Pathology
  • Plant Molecular Biology Research
  • Plant nutrient uptake and metabolism
  • Laser-induced spectroscopy and plasma
  • Soil erosion and sediment transport
  • CRISPR and Genetic Engineering
  • Advanced Optical Sensing Technologies
  • Combustion and Detonation Processes
  • Electromagnetic Launch and Propulsion Technology
  • Laser Design and Applications
  • Hydrocarbon exploration and reservoir analysis
  • Soil Carbon and Nitrogen Dynamics
  • Plant Stress Responses and Tolerance
  • Photosynthetic Processes and Mechanisms
  • Magnetic confinement fusion research
  • High-pressure geophysics and materials
  • Plant Disease Resistance and Genetics
  • Genetic Mapping and Diversity in Plants and Animals
  • Particle accelerators and beam dynamics
  • Geoscience and Mining Technology

Fujian Agriculture and Forestry University
2019-2023

Grandomics (China)
2022-2023

Ministry of Agriculture and Rural Affairs
2023

Hunan Agricultural University
2022

China Academy of Engineering Physics
2014-2017

Institute of Fluid Physics
2014

Divergent selection of populations in contrasting environments leads to functional genomic divergence. However, the architecture underlying heterogeneous differentiation remains poorly understood. Here, we de novo assembled two high-quality wild barley (Hordeum spontaneum K. Koch) genomes and examined gene expression patterns under abiotic stress populations. These had a shared ancestry originated close geographic proximity but experienced different selective pressures due their...

10.1111/pbi.13917 article EN cc-by-nc-nd Plant Biotechnology Journal 2022-08-29

Trehalose biosynthesis enzyme homologues in plants contain two families, trehalose-6-phosphate synthases (TPSs) and phosphatases (TPPs). Both families participate trehalose synthesis a variety of stress-resistance processes. Here, nine BdTPS ten BdTPP genes were identified based on the Brachypodium distachyon genome, all classified into three classes. The Class I II members differed substantially gene structures, conserved motifs, protein sequence identities, implying varied functions. Gene...

10.3390/plants8100362 article EN cc-by Plants 2019-09-23

Abstract Wild barley, from “Evolution Canyon (EC)” in Mount Carmel, Israel, are ideal models for cereal chromosome evolution studies. Here, the wild barley EC_S1 is south slope with higher daily temperatures and drought, while EC_N1 north a cooler climate relative humidity, which results differentiated selection due to contrasting environments. We assembled 5.03 Gb genome contig N50 of 3.53 Mb 5.05 3.45 using 145 160.0 Illumina sequencing data, 295.6 285.35 Nanopore data 555.1 514.5 Hi-C...

10.1038/s41597-023-02434-2 article EN cc-by Scientific Data 2023-08-10

The Primary Test Stand (PTS) developed at the China Academy of Engineering Physics is a 20 TW pulsed power driver, which can deliver ∼10 MA, 70 ns rise-time (10%–90%) current to short-circuit load and has important applications in Z-pinch driven inertial confinement fusion high energy density physics. Preliminary results tungsten wire-array experiments on PTS are presented. geometries investigated include 15-mm-tall cylindrical single nested arrays with diameter ranging from 13 mm 30 mm,...

10.1063/1.4926532 article EN Physics of Plasmas 2015-07-01

Haploid induction (HI) can create true-breeding lines in a single generation, which significantly accelerates the breeding process. In recent years, scientists have developed variety of new techniques to induce haploids through manipulation CENH3, variant centromere-specific histone H3. One alternative approach is based on CENH3 point mutations derived from EMS/TILLING, not lethal and yet responsible for inducing haploids. However, most residues been obtained by EMS mutagenesis over long...

10.1111/plb.13482 article EN Plant Biology 2022-10-26

Fast z-pinch is a very efficient way of converting electromagnetic energy to radiation. With an 8-10 MA current on primary test stand facility, about 1 MJ delivered vacuum chamber, which heats plasma radiate soft x-ray. To develop pulsed high power x-ray source, we studied the applicability diagnosing from tungsten wire array with flat spectral response diode (FSR-XRD). The detector was originally developed diagnose radiation hohlraum in SG-III prototype laser facility. It utilized gold...

10.1063/1.4934863 article EN Review of Scientific Instruments 2015-11-01

The Primary Test Stand (PTS) developed at the China Academy of Engineering Physics is a multiterawatt pulsed power driver, which can deliver ∼10 MA, 70 ns rise-time (10%-90%) current to short circuit load and has important applications in Z-pinch driven inertial confinement fusion high energy density physics. In this paper, primary results tungsten wire-array experiments on PTS are presented. geometries investigated include 15-mm-tall cylindrical single nested arrays with diameter ranging...

10.1063/1.4904786 article EN AIP conference proceedings 2014-01-01

The middle uplift of South Yellow Sea is tectonically one the most stable areas in basin,and it has received great concerns since its lower Paleozoic a potential hydrocarbon-bearing prospect area.Wavelet analysis method been used to deal with gravity and magnetic anomalies obtain crystalline basement shape uplift,and combined regional geology seismic section data,some new understandings on stratigraphic distribution features are as follows:(1)The not flat plain,and geographic fluctuation...

10.3724/sp.j.1140.2009.01059 article EN Marine Geology & Quaternary Geology 2009-04-07

We investigated the radiation characteristics and implosion dynamics of low-wire-number cylindrical tungsten wire array Z-pinches on YANG accelerator with a peak current 0.8–1.1 MA rising time ∼ 90 ns. The arrays are made up (8–32) × 5 μm wires 6/10 mm in diameter 15 height. highest X-ray power obtained experiments was about 0.37 TW total energy 13 kJ conversion efficiency 9% (24 wires, 6 diameter). Most emissions from Z-pinch plasmas were distributed spectral band 100–600 eV, peaked at 250...

10.1088/1674-1056/21/5/055206 article EN Chinese Physics B 2012-05-01

In this paper, we represent the radiation characteristics of electromagnetic pulse generated by Z pinch implosion. Magnetic energy which couples with motions metallic wire arrays or solid liners driven can radiate away. Theoretical results indicate that power is determined both load current and implosion trace. Experiments are carried on primary test stand facility at Institute Fluid Physics where a rising to 7 MA in (10%–90%) 65 ns used drive array pinch. The measured trace show deliver...

10.7498/aps.62.245201 article EN cc-by Acta Physica Sinica 2013-01-01

The preliminary experiments of wire array implosion were performed on PTS, a 10 MA z-pinch driver with 70 ns rise time. A set diagnostics have been developed and fielded PTS to study pinch physics dynamics array. Radiated power measurement for soft x-rays was by multichannel filtered x-ray diode array, flat spectral responses detector. Total yield measured calibrated, unfiltered nickel bolometer which also used obtain power. Multiple time-gated pinhole cameras produce spatial-resolved images...

10.1063/1.4904796 article EN AIP conference proceedings 2014-01-01

The influences of magnetic fluctuations on quasiperiodic structure formation and fundamental wavelength selection the instability have been studied using two 25-μm-diameter tungsten wires a 100 ns rise time, 220 kA pulsed power facility. Two different load configurations were adopted to make end surfaces electrodes approximately satisfy reflecting absorbing boundary conditions, respectively. experimental results that in case condition is about one half demonstrated appear play key role mode...

10.1063/1.4905072 article EN Physics of Plasmas 2014-12-01

Pineapple [ Ananas comosus (L.) Merr.] is the most economically important crop possessing crassulacean acid metabolism (CAM) photosynthesis which has a higher water use efficiency by control of nocturnal opening and diurnal closure stomata. To provide novel insights into diel regulatory landscape in pineapple leaves, we performed genome-wide mapping DNase I hypersensitive sites (DHSs) leaves at day (2a.m.) night (10a.m.) using simplified DNase-seq method. As result, totally 33340 28753 DHSs...

10.3389/fgene.2023.1086554 article EN cc-by Frontiers in Genetics 2023-07-04

Summary form only given. An extensive diagnostics with spatial and temporal resolution for Z-pinch was developed on the PTS facility at Key Labora tory of Pulsed Power, CAEP. can generate a curr ent rising to 8-10 MA in 90 ns, which used drive wire array Z pinches. Diagnostics including soft X-ray power meter, DANTE, transmission grating spectrometer, time-resolved pinhole camera, optical/X-ray streak cameras, crystal laser differential interferometer some experimental results are described...

10.1109/plasma.2013.6634831 article EN 2013 Abstracts IEEE International Conference on Plasma Science (ICOPS) 2013-06-01

Experimental results of Z pinches conducted on PTS facility at Institute Fluid Physics are presented here. Tungsten wire arrays driven by current with peak value ∼7 MA and zero-to-peak rise time ∼100 ns generate an x-ray power ∼50 TW, energy ∼0.5 MJ color temperature ∼150 eV. Axial kinetic induced m=0 like instability was proposed to solve the discrepancy that built up in implosion is too low contribute radiation. Changes wavelength might be explained equivalence plasma column waveguide some...

10.1109/ppc.2013.6627564 article EN 2013-06-01

Particular attention was placed on observations of dynamic properties the azimuthally correlated structures axial instability wire-array Z pinches, which were conducted at 10-MA (for short circuit load) pulsed power generator-the Primary Test Stand facility. Not well fabricated loads, expected to preset bubble or spike in plasma, used degrade implosion symmetry order magnify phenomenon instability. The side-view sequence evolution correlation given by laser shadowgraphy clearly demonstrates...

10.1063/1.4979906 article EN Physics of Plasmas 2017-04-01
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