中国科学院机构知识库网格系统: 检索

Occurrence, profiles, and control of unintentional POPs in the steelmaking industry: A review 期刊论文 OAI收割
SCIENCE OF THE TOTAL ENVIRONMENT, 2021, 卷号: 773, 页码: -
作者: Shen, Jia; Yang, Lili; Liu, Guorui; Zhao, Xiaoguang; Zheng, Minghui

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收藏 | 浏览/下载：15/0 | 提交时间：2021/12/22

Persistent organic pollutant Steelmaking industry Persistent organic pollutant formation Emission level Emission limit

NOx emission and its reduction mechanism investigation in one diffusion-like vortex-tube combustor 期刊论文 OAI收割
JOURNAL OF CLEANER PRODUCTION, 2020, 卷号: 274, 页码: 11
作者: Ren, Shoujun; Wang, Xiaohan

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收藏 | 浏览/下载：34/0 | 提交时间：2021/10/22

Vortex-tube combustor Ultra-lean combustion Axial fuel-injected NOx emission Stability limit Turbulent diffusion velocity

Combustion of liquid ethanol in an innovatory vortex-tube combustor with Self-evaporating and edge-like flame properties 期刊论文 OAI收割
FUEL, 2020, 卷号: 280, 页码: 7
作者: Ren, Shoujun; Yang, Haolin; Jiang, Liqiao; Zhao, Daiqing; Wang, Xiaohan

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收藏 | 浏览/下载：62/0 | 提交时间：2020/10/30

Vortex-tube combustor Liquid ethanol Self-evaporating Stability limit NOx emission

No pulsed radio emission during a bursting phase of a Galactic magnetar 期刊论文 OAI收割
Nature, 2020, 卷号: 587, 页码: 63-65
作者: HXMT

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收藏 | 浏览/下载：44/0 | 提交时间：2022/02/08

Astrophysics - High Energy Astrophysical Phenomena Abstract: Fast radio bursts (FRBs) are millisecond-duration radio transients of unknown physical origin observed at extragalactic distances^1-3. It has long been speculated that magnetars are the engine powering repeating bursts from FRB sources^4-13, but no convincing evidence has been collected so far¹⁴. Recently, the Galactic magnetar SRG 1935+2154 entered an active phase by emitting intense soft íray bursts¹⁵. One FRB-like event with two peaks (FRB 200428) and a luminosity slightly lower than the faintest extragalactic FRBs was detected from the source, in association with a soft íray/hard-X-ray flare^18-21. Here we report an eight-hour targeted radio observational campaign comprising four sessions and assisted by multi-wavelength (optical and hard-X-ray) data. During the third session, 29 soft-íray repeater (SGR) bursts were detected in íray energies. Throughout the observing period, we detected no single dispersed pulsed emission coincident with the arrivals of SGR bursts, but unfortunately we were not observing when the FRB was detected. The non-detection places a fluence upper limit that is eight orders of magnitude lower than the fluence of FRB 200428. Our results suggest that FRB-SGR burst associations are rare. FRBs may be highly relativistic and geometrically beamed, or FRB-like events associated with SGR bursts may have narrow spectra and characteristic frequencies outside the observed band. It is also possible that the physical conditions required to achieve coherent radiation in SGR bursts are difficult to satisfy, and that only under extreme conditions could an FRB be associated with an SGR burst.

Constraining the X-Ray-Infrared Spectral Index of Second-timescale Flares from SGR 1935+2154 with Palomar Gattini-IR 期刊论文 OAI收割
The Astrophysical Journal, 2020, 卷号: 901, 页码: L7
作者: HXMT

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收藏 | 浏览/下载：24/0 | 提交时间：2022/02/08

Radio transient sources Magnetars Soft gamma-ray repeaters 2008 992 1471 Astrophysics - High Energy Astrophysical Phenomena Astrophysics - Instrumentation and Methods for Astrophysics Abstract: The Galactic magnetar SGR 1935+2154 has been reported to produce the first example of a bright millisecond-duration radio burst (FRB 200428) similar to the cosmological population of fast radio bursts (FRBs). The detection of a coincident bright X-ray burst represents the first observed multiwavelength counterpart of an FRB. However, the search for similar emission at optical wavelengths has been hampered by the high inferred extinction on the line of sight. Here, we present results from the first search for second-timescale emission from the source at near-infrared (NIR) wavelengths using the Palomar Gattini-IR observing system in the J band, enabled by a novel detector readout mode that allows short exposure times of ?0.84 s with 99.9% observing efficiency. With a total observing time of ?12 hr (?47,728 images) during its 2020 outburst, we place median 3Ҡlimits on the second-timescale NIR fluence of ?18 Jy ms (13.1 AB mag). The corresponding extinction-corrected limit is ?125 Jy ms for an estimated extinction of A_J = 2.0 mag. Our observations were sensitive enough to easily detect an NIR counterpart of FRB 200428 if the NIR emission falls on the same power law as observed across its radio to X-ray spectrum. We report nondetection limits from epochs of four simultaneous X-ray bursts detected by the Insight-HXMT and NuSTAR telescopes during our observations. These limits provide the most stringent constraints to date on fluence of flares at 10¹⁴ Hz, and constrain the fluence ratio of the NIR emission to coincident X-ray bursts to R_NIR ? 0.025 (fluence index ?0.35).

Comparative Study on the Combustion Performance in Localized Stratified and Rapidly Mixed Swirling Tubular Flame Burners 期刊论文 OAI收割
COMBUSTION SCIENCE AND TECHNOLOGY, 2019, 页码: 19
作者: Ren, Shoujun; Jiang, Liqiao; Yang, Haolin; Zhao, Daiqing; Wang, Xiaohan

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收藏 | 浏览/下载：33/0 | 提交时间：2020/10/29

Tubular flame combustion characteristic formation mechanism stability limit NOx emission

Preliminary environmental radiation considerations for CFETR 期刊论文 OAI收割
FUSION ENGINEERING AND DESIGN, 2019, 卷号: 140, 页码: 16-22
作者: Nie, Baojie; Jiang, Man; Ni, Muyi; Li, Fengchen

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收藏 | 浏览/下载：32/0 | 提交时间：2020/07/14

CFETR Regulations Tritium Safety & dose limit Emission limit Dose & consequences

Laser Induced Breakdown Spectroscopy for Comparative Quantitative Analysis of Betel Leaves from Pakistan 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 卷号: 38, 期号: 10, 页码: 3295-3302
作者: Rehan, K.; Muhammad, R.; Sultana, S.; Rehan, I

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收藏 | 浏览/下载：46/0 | 提交时间：2018/12/17

Laser induced breakdown spectroscopy (LIBS) Spectral analysis Inductively coupled plasma-optical emission spectrometry Limit of detection (LOD)

Effects of donor and acceptor's fluorescence lifetimes on the method of applying Forster resonance energy transfer in STED microscopy 期刊论文 OAI收割
JOURNAL OF MICROSCOPY, 2018, 卷号: 269, 期号: 1, 页码: 59-65
作者: Deng, SH; Chen, JF; Gao, ZS; Fan, CH; Yan, QR

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收藏 | 浏览/下载：47/0 | 提交时间：2018/09/06

Diffraction Resolution Limit Stimulated-emission Breaking Field Fret Excitation Barrier Light

Nanoprobes for super-resolution fluorescence imaging at the nanoscale 期刊论文 OAI收割
SCIENCE CHINA-CHEMISTRY, 2014, 卷号: 57, 期号: 1, 页码: 100—106
Hou, SG; Liang, L; Deng, SH; Chen, JF; Huang, Q; Cheng, Y; Fan, CH

收藏 | 浏览/下载：26/0 | 提交时间：2015/03/13

RESONANCE ENERGY-TRANSFER DIFFRACTION RESOLUTION LIMIT FIELD OPTICAL NANOSCOPY GROUND-STATE-DEPLETION CDSE/ZNS QUANTUM DOTS STED MICROSCOPY LOCALIZATION MICROSCOPY STIMULATED-EMISSION SCALE RESOLUTION LIVING CELLS