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In-situ hydrocarbon formation and accumulation mechanisms of micro- and nano-scale pore-fracture in Gulong shale, Songliao Basin, NE China

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Petroleum Exploration and Development 2023年第6期50卷 1269-1281页

作者： WANG Xiaojun CUI Baowen FENG Zihui SHAO Hongmei HUO Qiuli ZHANG Bin GAO Bo ZENG Huasen National Key Laboratory of Continental Shale Oil Daqing 163002China PetroChina Daqing Oilfield Co. Ltd.Daqing 163002China PetroChina Daqing Oilfield Exploration and Development Research Institute Daqing 163712China PetroChina Research Institute of Petroleum Exploration&Development Beijing 100083China

By conducting experimental analyses, including thermal pyrolysis, micro-/nano-CT, argon-ion polishing field emission scanning electron microscopy (FE-SEM), confocal laser scanning microscopy (CLSM), and two-dimensional nuclear magnetic resonance (2D NMR), the Gulong shale oil in the Songliao Basin was investigated with respect to formation model, pore structure and accumulation mechanism. First, in the Gulong shale, there are a large number of pico-algae, nano-algae and dinoflagellates, which were formed in brackish water environment and constituted the hydrogen-rich oil source materials of shale. Second, most of the oil-generating materials of the Qingshankou Formation shale exist in the form of organo-clay complex. During organic matter thermal evolution, clay minerals had double effects of suppression and catalytic hydrogenation, which expanded shale oil window and increased light hydrocarbon yield. Third, the formation of storage space in the Gulong Shale was related to dissolution and hydrocarbon generation. With the diagenesis, micro-/nano-pores increased, pore diameter decreased and more bedding fractures appeared, which jointly gave rise to the unique reservoir with dual media (i.e. nano-scale pores and micro-scale bedding fractures) in the Gulong shale. Fourth, the micro-/nano-scale oil storage unit in the Gulong shale exhibits independent oil/gas occurrence phase, and shows that all-size pores contain oils, which occur in condensate state in micropores or in oil-gas two phase (or liquid) state in macropores/mesopores. The understanding about Gulong shale oil formation and accumulation mechanism has theoretical and practical significance for advancing continental shale oil exploration in China.

关键词： micro- nano-scale oil storage unit hydrocarbon occurrence phase organo-clay complex in-situ hydrocarbon accumulation Gulong shale oil Cretaceous Qingshankou Formation Songliao Basin

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Whispering-gallery mode hexagonal micro-/nanocavity lasers [Invited]

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Photonics Research 2019年第5期7卷 594-607页

作者： Yue-De Yang Min Tang Fu-Li Wang Zhi-Xiong Xiao Jin-Long Xiao Yong-Zhen Huang State Key Laboratory of Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China

Whispering-gallery-mode(WGM) hexagonal optical micro-/nanocavities can be utilized as high-quality(Q) resonators for realizing compact-size low-threshold lasers. In this paper, the progress in WGM hexagonal micro-/nanocavity lasers is reviewed comprehensively. High-Q WGMs in hexagonal cavities are divided into two kinds of resonances propagating along hexagonal and triangular periodic orbits, with distinct mode characteristics according to theoretical analyses and numerical simulations;however, WGMs in a wavelength-scale nanocavity cannot be well described by the ray model. Hexagonal micro-/nanocavity lasers can be constructed by both bottom-up and top-down processes, leading to a diversity of these lasers. The ZnO-or nitride-based semiconductor material generally has a wurtzite crystal structure and typically presents a natural hexagonal cross section. Bottom-up growth guarantees smooth surface faceting and hence reduces the scattering loss effectively.Laser emissions have been successfully demonstrated in hexagonal micro-/nanocavities synthesized with various materials and structures. Furthermore, slight deformation can be easily introduced and precisely controlled in top-down fabrication, which allows lasing-mode manipulation. WGM lasing with excellent singletransverse-mode property was realized in waveguide-coupled ideal and deformed hexagonal microcavity lasers.

关键词： Whispering-gallery-mode(WGM) high-quality(Q) hexagonal micro- nanocavity lasers

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Macro-, micro- and nano-polymeric particles: Preparation and selected applications

Macro-, micro- and nano-polymeric particles: Preparation and...

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2005年全国高分子学术论文报告会

作者： Zheng Wang, Chao Lin, Junhua Zhang, Zhengpu Zhang, Wenqiang Huang, Xiao-Xia Zhu Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China, Departement de Chimie, Universite de Montreal, C.P. 6128, Succ. Centre-ville, Montreal, Quebec, H3C 3J, Canada,

＜正＞We have prepared polymeric particles of various sizes,ranging from nanoparticles to large beads,often uniform in size,for different applications．（1）Nanospheres（100-600 nm）based on N-alkylacrylamide and meth... 详细信息

关键词： Macro- micro- nano-polymeric particles preparation

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Synthesis of Pt-SnOx/TS-1@SBA-16 Composites and Their High Catalytic Performance for Propane Dehydrogenation

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Chemical Research in Chinese Universities 2019年第5期35卷 866-873页

作者： LI Hongda ZHAO Zhen LI Jiacheng LI Jianmei ZHAO Linlin SUN Jiachen FAN Xiaoqiang State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing 102249P.R.China Institute of Catalysis for Energy and Environment College of Chemistry and Chemical EngineeringShenyang Normal UniversityShenyang 110034P.R.China

A novel composite material of TS-1@SBA-16 was synthesized by enwrapping TS-1 zeolite crystals with mesoporous SBA-16 silica. This composite was used as catalyst support for loading Pt-SnOx in the propane dehydr genation(PDH) reaction. Catalysts were characterized by means ofN2 adsorption-desorption, XRD, SEM, TEM, XPS, UV-Vis, and Raman spectroscopy. The effect of different contents of TS-1 on PDH was investigated, and the optimal amount of TS-1 was determined to be 10%. The catalyst with TS-1 content of 10% showed the highest PDH activity and the initial conversion of propane over it can achieve 54.5%, higher than those over TS-1 or SB A-16-supported ones. The superior catalytic performance of Pt-SnOx/TS-1 @SBA-16 is related to the synergistic effect of the excellent mass transfer performance through the hierarchical porous structure, suitable acid acidity and electronic effect of Ti species.

关键词： Catalyst Pt-SnOx Propane Dehydrogenation TS-1 zeolite micro- and meso-porous material

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Hyper Gravity-Induced Transients in <i>Phycomyces</i>as Measured by Single Beam Spectrophotometer on the Sounding Rocket TEXUS 50

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Journal of Modern Physics 2018年第2期9卷 273-286页

作者： Werner Schmidt Fachbereich Biologie Philipps-Universit&auml t Marburg Marburg Germany Fachbereich Biologie Universit&auml t Konstanz Konstanz Germany

In the first paper of two referring to the TEXUS 50 campaign using micro dual wavelength spectrometers (MDWS) we kinetically determined the threshold1 for GIACs (gravity-induced absorption changes) in Phycomyces to be lower than 25 × 10−3 g (http://***/pdf/JMP_2015082810060783.pdf). In this second paper, we attended measurement of GIAC-spectra. Unexpectedly, during the upwards movement, i.e. the hypergravity phase up to top acceleration values reaching 11.6 g at 35.4 s after liftoff we observed transient GIAC-spectra ranging from 380 to 750 nm. In addition, during the whole acceleration phase of 68.2 s, another component near 700 nm develops which remains stable during the whole “free fall trajectory parabola” for 381.3 s. The subsequent reentry of the rocket leads to extraordinary deceleration values up 37.8 g, completely destroying Phycomyces sporangiophores excluding their spectral measurement. During the microgravity phase and by centrifuge operation we were unable to detect any GIAC-spectra (in contrast to kinetic MDWS-measurements, first paper).

关键词： MDWS (micro-Dual Wavelength Spectrophotometer) Single Beam Spectrophotometer (SBS) Diode Array Spectrometer (USB-2000+ Ocean Optics) GIAC (Gravity-Induced Absorption Change) Phycomyces blakesleeanus Sporangiophore micro- and Hypergravity Texus 50 Sounding Rocket Graviperception. Hyper Gravity-Induced Transients

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Gravireception in <i>Phycomyces</i>: Threshold Determination on the Sounding Rocket TEXUS 50

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Journal of Modern Physics 2015年第10期6卷 1381-1389页

作者： Werner Schmidt Fachbereich Biologie Philipps-Universit&#228 t Marburg Marburg Germany Fachbereich Biologie Universit&#228 t Konstanz Konstanz Germany

Under parabolic flight conditions microgravity is not lower than 3 to 5 times 10-2 g. In contrast to parabolic flights, sounding rocket flights are virtually vibrational-free allowing microgravity as low as 10-5 g. Thus, a rotating platform serving as centrifuge allows the precise generation of gravitational forces ranging from 5 to 100 mg (not possible during parabolic flights). On this basis we determined the threshold1 for optical reflection/absorption changes in Phycomyces to be lower than 25 × 10-3 g. This compares well with the threshold determination of gravitropism in Phycomyces on a clinostat centrifuge. Kinetics of gravity-induced absorption changes and gravity as generated by the on-board centrifuge do not coincide but show a distinctive hysteresis with a latency of 4 s (75 mg-ramp, pull-up).

关键词： MDWS (micro-Dual Wavelength Spectrophotometer) Δ GIAC (Differential Gravity-Induced Absorption Change) Phycomyces blakesleeanus Sporangiophore micro- and Hypergravity Texus 50 Sounding Rocket Gravireception

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The famous versus the inconvenient-or the dawn and the rise of 3D-culture systems

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World Journal of Stem Cells 2009年第1期1卷 43-48页

作者： Brigitte Altmann Alexander Welle Stefan Giselbrecht Roman Truckenmüller Eric Gottwald Institute for Biological Interfaces Karlsruhe Institute of TechnologyHermann-von-Helmholtz-Platz 1 76344 Eggenstein-LeopoldshafenGermany University of Twente MIRA Insti-tute for Biomedical Technology and Technical Medicine Department of Tissue RegenerationDrienerlolaan 57522 NB EnschedeThe Netherlands

One of the greatest impacts on in vitro cell biology was the introduction of three-dimensional(3D)culture systems more than six decades ago and this era may be called the dawn of 3D-tissue culture.Although the advantages were obvious,this field of research was a "sleeping beauty"until the 1970s when multicellular spheroids were discovered as ideal tumor models.With this rebirth,organotypical culture systems became valu-able tools and this trend continues to increase.While in the beginning,simple approaches,such as aggregation culture techniques,were favored due to their simplicity and convenience,now more sophisticated systems are used and are still being developed.One of the boosts in the development of new culture techniques arises from elaborate manufacturing and surface modification tech-niques,especially micro and nano system technologies that have either improved dramatically or have evolved very recently.With the help of these tools,it will soon be possible to generate even more sophisticated and more organotypic-like culture systems.Since 3D per-fused or superfused systems are much more complex to set up and maintain compared to use of petri dishes and culture flasks,the added value of 3D approaches still needs to be demonstrated.

关键词： Three-dimensional cell culture micro- bioreactors Chips Scaffold Perfusion

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