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Response of Reactive Phosphorus Burial to the Sedimentary Transition from Cretaceous Black Shales to Oceanic Red Beds in Southern Tibet

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Acta Geologica Sinica(English Edition) 2007年第6期81卷 1012-1018页

作者： huang yongjian WANG Chengshan CHEN Xi State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing 100083 China Research Center for Tibetan Plateau Geology China University of Geosciences Beijing 100083 China

The mechanism of sedimentary transition from the Cretaceous black shales to the oceanic red beds is a new and important direction of Cretaceous research. Chemical sequential extraction is applied to study the burial records of reactive phosphorus in the black shale of the Gyabula Formation and oceanic red beds of the Chuangde Formation, Southern Tibet. Results indicate that the principal reactive phosphorus species is the authigenic and carbonate-associated phosphorus （CAP） in the Gyabula Formation and iron oxides-associated phosphorus （FeP） in the Chuangde Formation which accounts for more than half of their own total phosphorus content. While the authigenic and carbonate-associated phosphorus （CAP） is almost equal in the two Formations; the iron oxidesassociated phosphorus is about 1.6 times higher in the Chuangde Formation than that in the Gyabula Formation resulting in a higher content of the total phosphorus in the Chuangde Formation. According to the observations on the marine phosphorus cyde in Modern Ocean, it is found that preferential burial and regeneration of reactive phosphorus corresponds to highly oxic and reducing conditions, respectively, leading to the different distribution of phosphorus in these two distinct type of marine sediments. It is the redox-sensitive behavior of phosphorus cycle to the different redox conditions in the ocean and the controlling effects of phosphorus to the marine production that stimulate the local sedimentary transition from the Cretaceous black shale to the oceanic red beds.

关键词： Reactive phosphorus black shale oceanic red beds Cretaceous Southern Tibet China

Burial Records of Reactive Iron in Cretaceous Black Shales and Oceanic Red Beds from Southern Tibet

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Acta Geologica Sinica(English Edition) 2007年第3期81卷 463-469页

作者： huang yongjian WANG Chengshan HU Xiumian CHEN Xi 1 Research Center for Tibetan Plateau Geology China University of Geosciences （Beijing） Beijing 100083 Department of Earth Sciences Nanjing University Nanjing Jiangsu 210093

One of the new directions in the field of Cretaceous research is to elucidate the mechanism of the sedimentary transition from the Cretaceous black shales to oceanic red beds. A chemical sequential extraction method was applied to these two types of rocks from southern Tibet to investigate the burial records of reactive iron. Results indicate that carbonate-associated iron and pyrite are relatively enriched in the black shales, but depleted or absent in red beds. The main feature of the reactive iron in the red beds is relative enrichment of iron oxides （largely hematite）, which occurred during syn-depostion or early diagenesis. The ratio between iron oxides and the total iron indicates an oxygen-enriched environment for red bed deposition. A comparison between the reactive iron burial records and proxies of paleo-productivity suggests that paleo-productivity decreases when the ratio between iron oxides and the total iron increases in the red beds. This phenomenon could imply that the relationship between marine redox and productivity might be one of the reasons for the sedimentary transition from Cretaceous black shale to oceanic red bed deposition.

关键词： reactive iron black shales oceanic red beds Cretaceous southern Tibet

Remodeling tumor microenvironment using pH-sensitive biomimetic co-delivery of TRAIL/R848 liposomes against colorectal cancer

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Oncology Research 2024年第11期32卷 1765-1776页

作者： yongjian huang JINZHOU WANG JIUHUA XU NING RUAN Department of Gastrointestinal Surgery The First Affiliated Hospital of Fujian Medical UniversityFuzhou350005China

Background:Despite significant advancements in the development of anticancer therapies over the past few decades,the clinical management of colorectal cancer remains a challenging *** study aims to investigate the inhibitory effects of cancer-targeting liposomes against colorectal *** and Methods:Liposomes consisting of 3β-[N-(N′,N′-dimethylamino ethane)carbamoyl]-cholesterol(DC-CHOL),cholesterol(CHOL),and dioleoylphosphatidylethanolamine(DOPE)at a molar ratio of 1:1:0.5 were created and used as carriers to deliver an apoptosis-inducing plasmid encoding the tumor necrosis factor-related apoptosis-inducing ligand(pTRAIL)gene,along with the toll-like receptor(TLR7)agonist Rsiquimod(R848).The rationale behind this design is that pTRAIL can trigger cancer cell apoptosis by activating the DR4/5 receptor,while R848 can stimulate the immune ***:Experimental results demonstrated the synergistic effects of R848 and pTRAIL encapsulated by liposomes(RTL)in suppressing the proliferation of colorectal cancer ***,further in vivo investigations revealed the strong anti-tumor efficacy of RTL in xenograft and orthotropic in situ models of colorectal ***:These findings collectively highlight the therapeutic potential of R848/pTRAIL-loaded liposomes in the treatment of colorectal cancer.

关键词： Colorectal cancer Plasmid TRAIL(pTRAIL) R848 Tumor-associated macrophages

Effects of Two Potential Allelochemicals on the Photosystem II of Nitzschia closterium and Monostroma nitidum

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Phyton-International Journal of Experimental Botany 2023年第1期92卷 251-269页

作者： Bowen huang Enyi Xie Yu Ran Xinyi Chen yongjian huang Jianjun Cui Fishery College Guangdong Ocean UniversityZhanjiang524088China

In aquaculture,high-density seaweed farming brings higher economic benefits but also increases outbreaks of diatom *** effective control of diatom felt in high-density seaweed farming has always been a research *** study selected two potential allelochemicals 2-hydroxycinnamic acid and quinic acid to explore their effects on a diatom Nitzschia closterium and an economic seaweed Monostroma *** results showed that 2-hydroxycinnamic acid had better inhibitory effects than quinic acid on the growth,pigment content and photosynthetic efficiency of *** half-maximal inhibitory concentrations at 120 h(IC_(50–120 h))were 0.9000 and 1.278 mM,***,these allelochemicals had limited inhibitory effects on the growth,pigment content and photosynthetic efficiency of *** before 24 *** further explore the allelopathic effect of these chemicals,this study focused on the photosystem II energy fluxes of *** was found that 3 mM 2-hydroxycinnamic acid could destroy the whole photosynthetic system by devastating the PSII reaction centre(RC)before 24 h;however,the same concentration of quinic acid could only down-regulate the electron transport efficiency by changing the effective antenna size of an active RC and downregulating the PSII reaction centre *** experimental results are expected to provide a new strategy to control diatom felt blooms on the high-density seaweed farming areas.

关键词： Allelochemicals 2-hydroxycinnamic acid quinic acid Nitzschia closterium Monostroma nitidum photosynthetic system

Progress on Continental Scientific Drilling Project of Cretaceous Songliao Basin(SK-1 and SK-2)

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Science Bulletin 2019年第2期64卷 73-75页

作者： Yuan Gao Chengshan Wang Pujun Wang Youfeng Gao yongjian huang Changchun Zou State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences (Beijing) School of Earth Sciences and Resources China University of Geosciences (Beijing) College of Earth Sciences Jilin University Key Laboratory for Evolution of Past Life and Environment in Northeast Asia Jilin University Research Center of Palaeontology and Stratigraphy Jilin University School of Geophysics and Information Technology China University of Geosciences (Beijing)

Scientific drilling is a significant exploration tool to better understand earth’s environmental and biological evolution,physical composition and structure,and natural resources and geohazards,through directly sampling on subsurface rock,fluid,living organisms and long-term monitoring of on-going deep *** plays a critical role in deciphering earth system dynamics and in solving socio-economic problems currently facing by humans.

关键词： SK-1 and SK-2 Project

Cretaceous Oceanic Red Beds:Distribution,Lithostratigraphy and Paleoenvironments

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Acta Geologica Sinica(English Edition) 2007年第6期81卷 1070-1086页

作者： CHEN Xi WANG Chengshan HU Xiumian huang yongjian WANG Pingkang Luba JANSA ZENG Xuan State Key Laboratory of Geologtcal Processes and Mineral Resources Beijing 100083 China The School of Earth Science and Resources of China University of Geosciences Beijing 100083 China Research Center for Tibetan Plateau Geology of China University of Geosciences Beijing 100083 China Department of Geology of Nanjing University Nanjing 210093 China Earth Science Department Dalhousie University Halifax N.S. B2Y4A2 Canada Tianjin Branch of China National Offshore Oil Corporation Tianjing 300452 China

Cretaceous oceanic red beds （CORBs） represented by red shales and marls, were deposited during the Cretaceous and early Paleocene, predominantly in the Tethyan realm, in lower slope and abyssal basin environments. Detailed studies of CORBs are rare; therefore, we compiled CORBs data from deep sea ocean drilling cores and outcrops of Cretaceous rocks subaerially exposed in southern Europe, northwestern Germany, Asia and New Zealand. In the Tethyan realm, CORBs mainly consist of reddish or pink shales, limestones and marlstones. By contrast, marlstones and chalks are rare in deep-ocean drilling cores. Upper Cretaceous marine sediments in cores from the Atlantic Ocean are predominantly various shades of brown, reddish brown, yellowish brown and pale brown in color. A few red, pink, yellow and orange Cretaceous sediments are also present. The commonest age of CORBs is early Campanian to Maastrichtian, with the onset mostly of oxic deposition often after Oceanic Anoxic Events （OAEs）, during the early Aptian, late Albian-early Turonian and Campanian. This suggests an indicated and previously not recognized relationship between OAEs, black shales deposition and CORBs. CORBs even though globally distributed, are most common in the North Atlantic and Tethyan realms, in low to mid latitudes of the northern hemisphere; in the South Atlantic and Indian Ocean in the mid to high latitudes of the southern hemisphere; and are less frequent in the central Pacific Ocean. Their widespread occurrence during the late Cretaceous might have been the result of establishing a connection for deep oceanic current circulation between the Pacific and the evolving connection between South and North Atlantic and changes in oceanic basins ventilation.

关键词： Cretaceous pelagic Red Beds paleoenvironment paleogeography

基于项目教学的创意产品设计教学现状及改革策略

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鞋类工艺与设计 2025年第3期5卷 140-142页

作者：黄永健山东工艺美术学院山东济南250013

社会经济快速发展的大背景下,社会企业对人才的培养要求也越来越高,继续沿用传统的人才培养模式,显然无法培养出符合社会实际所需的人才。项目教学是近些年应用较为广泛的教学方法,其应用价值极为显著,将其引入创意产品设计教学中,有助... 详细信息

社会经济快速发展的大背景下,社会企业对人才的培养要求也越来越高,继续沿用传统的人才培养模式,显然无法培养出符合社会实际所需的人才。项目教学是近些年应用较为广泛的教学方法,其应用价值极为显著,将其引入创意产品设计教学中,有助于解决现存的教学问题,促进教学优化创新,培养出和社会需求相匹配的创意产品设计人才。本文通过对创意产品设计教学现状进行探究,指出基于项目教学的创意产品设计教学的改革意义,提出基于项目教学的创意产品设计教学的改革策略。

关键词：创意产品设计课程项目教学教学改革

Pyrite Morphology Variations from the Upper Cretaceous Qingshankou Formation Unit 1 in Songliao Basin,Northeast China:Evidence for Excursions of the O2-H2S Redox Transition

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地学前缘 2009年第S1期16卷 93-94页

作者： Pingkang Wang,Chengshan Wang,yongjian huang China University of Geosciences(Beijing),Beijing 100083,China.

Pyrite is a ubiquitous authigenic mineral in modern anoxic sediments and occurs in ancient sedimentary *** of sedimentary pyrite morphology, which can provide useful information on deposition environments and early diagenetic processes,has become an important aspect for reconstruction of *** Upper Cretaceous Qingshankou Formation Unit 1（K2qn1）lithology,which occured in the south well of the SLCORE I for Continental Cretaceous Scientific Drilling Project

关键词： pyrite morphology O2-H2S redox transition Songliao Basin Qingshankou Formation Unit 1

Trackingδ13C andδ18O fluctuations uncovers stable modes and key patterns of paleoclimate

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Geoscience Frontiers 2024年第4期15卷 115-133页

作者： Shifeng Sun Haiying Wang yongjian huang School of Science China University of Geosciences(Beijing)Beijing 100083China State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences(Beijing)Beijing 100083China School of Earth Sciences and Resources China University of Geosciences(Beijing)Beijing 100083China

The examination of fluctuations in the correlations betweenδ13C andδ18O is of significant importance for the reconstruction of the Earth's climate history.A key challenge in paleoclimatology is finding a suitable method to represent the correlated fluctuation system betweenδ13C andδ*** method must be able to handle data sets with missing or inaccurate values,while still retaining the full range of dynamic information about the *** non-linear and complex correlations betweenδ13C andδ18O poses a chal-lenge in developing reliable and interpretable *** transition network,which involves embedding theδ13C andδ18O sequence into the network using phase space reconstruction,is a coarse-grained based *** approach is well-suited to nonlinear,complex dynamic systems,and is particularly adept at emerging knowledge from low-quality *** have effectively represented the fluctuations in the correlation betweenδ13C andδ18O since 66 million years ago(Ma)using a system of complex *** system,which has topological dynamical structures,is able to uncover the stable modes and key patterns in Cenozoic climate *** findings could help to improve climate models and predictions of future climate change.

关键词： Cenozoic climate dynamics Correlation analysis Complex network Coarse-grained methods Phase space reconstruction