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Phanerozoic oceanic and climatic perturbations in the context of Tethyan evolution

Science China Earth Sciences 2023年第12期66卷 2791-2806页

作者： Li TIAN Haijun SONG yuchu LIU Yuyang WU Daoliang CHU Huyue SONG State Key Laboratory of Biogeology and Environmental Geology School of Earth SciencesChina University of Geosciences(Wuhan)Wuhan 430074China

Climatic and environmental conditions play a pivotal role in the evolution of the biosphere,serving as the primary natural factors influencing biological evolution and the development of human *** study of the evolution of Earth's habitability primarily revolves around the reconstruction of climatic and oceanic conditions in geohistorical periods,shedding light on their dynamic *** paper collates classic geological indicators and geochemical proxies associated with paleoclimatic and oceanic environmental *** latest“big data”analyses and simulations made possible by the availability of previously unimagined massive datasets reveal several key findings:During the early Paleozoic,atmospheric oxygen levels were low,and widespread oceanic anoxia was prevalent;the Devonian era witnessed a greenhouse climate,followed by the Carboniferous ice age characterized by higher oceanic oxidation levels and *** latest Paleozoic deglaciation occurred under high pCO_(2) conditions,extending into much of the Mesozoic and early Cenozoic,marked by multiple hyperthermal and anoxia expansion events,until the resurgence of global glaciation in the middle-late stages of the Cenozoic,ultimately bringing environmental and climatic conditions closer to modern *** correlating the aforementioned long-term trends with major geological events,we can delineate the co-evolution of paleoclimate and oceanic environments in tandem with the development of Tethys tectonics as follows.(1)During the Proto-Tethys stage,global paleo-elevations were relatively low,and atmospheric oxygen levels were also relatively *** the occurrence of significant tectonic movements that led to noticeable transgressive-regressive cycles,their effects on climate and oceanic environments were somewhat limited due to the relatively weak interactions.(2)The emergence of the Paleo-Tethys was a significant event that coincided with the formation of the supercontinent Panga

关键词： Paleo-temperature Paleo-redox Paleo-pH Tectonic movements Earth's habitability

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Fast Growth of Polycrystalline Film in SiCl4／H2 Plasma

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Chinese Physics Letters 2004年第6期21卷 1168-1170页

作者： HUANGRui LINXuan-Ying YUYun-Peng LINKui-Xun WEIJun-Hong yuchu-Ying WANGZhao-Kui DepartmentofPhysics ShantouUniversityShantou515063

We report the discovery of fast growth of polycrystalline silicon films under low temperature of 200–300 degrees C from SiCl4/H2 mixture gases by plasma enhanced chemical vapour deposition technique. The deposition rate strongly depends not only on the rf power and the flow ratio of H2/SiCl4, but also on the substrate temperature, while the crystalline fraction is mainly affected by both the rf power and the flow ratio of H2/SiCl4. The high film-growth rate is due to the enhancement of the gas-phase reaction in SiCl4/H2 plasma. By means of adjusting the matching relation between the flow ratio of H2/SiCl4 and rf power, and optimizing the substrate temperature, we obtain the polycrystalline silicon films deposited at a higher deposition rate over 3.5Å/s, with a crystalline fraction of 75% and an average crystallite size of 400–500nm in diameter.

关键词： Crystallite size

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Genetic diversity of the wild Asian lotus (Nelumbo nucifera) from Northern China

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Horticultural Plant Journal 2021年第5期7卷 488-500页

作者： Yanrong Fu Fengluan Liu Shuo Li Daike Tian Li Dong yuchu Chen Yan Su College of Landscape Architecture Beijing Forestry UniversityBeijing 100083China Shanghai Chenshan Plant Science Research Center Chinese Academy of SciencesShanghai 201602China Shanghai Key Laboratory of Plant Functional Genomics and Resources Shanghai Chenshan Botanical GardenShanghai 201602China Chinese Society of Landscape Architecture Beijing 100835China Zhejiang Humanity Landscape Co. Ltd.Hangzhou 310013China

Asian lotus(Nelumbo nucifera Gaertn.)is an aquatic plant with ornamental,cultural,economic,and ecological *** has abundant germplasm resources of Asian ***,in many areas,the wild Asian lotuses have been destroyed and the germplasms is now facing *** addition,the knowledge of the genetic diversity of the wild Asian lotus in China is *** identify and protect the germplasms of Chinese wild Asian lotus,eleven genomic-SSR primers,three EST-SSR primers,and three chloroplast DNA primers were used to investigate the genetic diversity among 69 samples of wild Asian lotus from 25 locations in northern *** genetic diversity of 27 samples of wild Asian lotus from southern China and other countries,the ancient Asian lotus,Asian lotus cultivars from China,and Asian-American hybrids was also *** genetic diversity of the wild Asian lotus from northern China was characterized as medium,and themean values of observed heterozygosity(Ho)and expected heterozygosity(he)were 0.087 and 0.552,*** on a UPGMA dendrogram and STRUCTURE analysis,the wild Asian lotus samples in northern China were divided into three *** wild Asian lotus samples from northern China contained 16 *** Nei’s genetic distance between the wild Asian lotus samples from the Songhua River basin and the Liao River basin in northeastern China was relatively small,and these germplasms might be relatively primitive compared to those from other *** study provides essential information regarding the genetic diversity of the wild Asian lotus resources in northern China,and provides a basis for further analysis of population-level genetic evolution through high-throughput sequencing.

关键词： Asian lotus Nelumbo nucifera Wild lotus Genetic diversity SSR cpDNA haplotype

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Water lilies as emerging models for Darwin’s abominable mystery

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Horticulture Research 2017年第1期4卷 105-111页

作者： Fei Chen Xing Liu Cuiwei Yu yuchu Chen Haibao Tang Liangsheng Zhang Center for Genomics and Biotechnology State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsKey Laboratory of Ministry of Education for GeneticsBreeding and Multiple Utilization of CropsFujian Provincial Key Laboratory of Haixia Applied Plant Systems BiologyFujian Agriculture and Forestry UniversityFuzhou350002China Zhejiang Humanities Landscape Co. LTDHangzhou310030China

Water lilies are not only highly favored aquatic ornamental plants with cultural and economic importance but they also occupy a critical evolutionary space that is crucial for understanding the origin and early evolutionary trajectory of flowering *** birth and rapid radiation of flowering plants has interested many scientists and was considered‘an abominable mystery’by Charles *** searching for the angiosperm evolutionary origin and its underlying mechanisms,the genome of Amborella has shed some light on the molecular features of one of the basal angiosperm lineages;however,little is known regarding the genetics and genomics of another basal angiosperm lineage,namely,the water *** this study,we reviewed current molecular research and note that water lily research has entered the genomic *** propose that the genome of the water lily is critical for studying the contentious relationship of basal angiosperms and Darwin’s‘abominable mystery’.Four pantropical water lilies,especially the recently sequenced Nymphaea colorata,have characteristics such as small size,rapid growth rate and numerous seeds and can act as the best model for understanding the origin of *** water lily genome is also valuable for revealing the genetics of ornamental traits and will largely accelerate the molecular breeding of water lilies.

关键词： breeding origin occupy

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My Working Experience in Maidika

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China's Tibet 2004年第2期15卷 31-32页

作者： WU yuchu

Iwent to Tibet to work in 1976, and was dispatched to northern Tibet, and from there to Maidika of Jiali county.

关键词：西藏生活环境生活习俗民族文化

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The asymmetric relationships of the distribution of conspecific saplings and adults in forest fragments

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Journal of Plant Ecology 2020年第4期13卷 398-404页

作者： Jinliang Liu Yuchen Zhong Lei Zhong Boliang Wei Shilu Zheng yuchu Xie Yi Jin Mingjian Yu College of Life Sciences Zhejiang UniversityHangzhouZhejiang 310058China College of Life and Environmental Science Wenzhou UniversityWenzhouZhejiang 325035China School of Biological Sciences The University of Western AustraliaCrawleyWAAustralia CSIRO health&Biosecurity Centre for Environment and Life SciencesFloreatWAAustralia State Key Laboratory of Plant Physiology and Development in Guizhou Province School of Life SciencesGuizhou Normal UniversityGuiyangGuizhou 550025China

Aims With the increase of land-use change,habitat fragmentation has become a major factor affecting plant ***,when the adult density is high,the survival rate of conspecific saplings may decline and provide more resources and space for other species to maintain a high local species ***,the spatial relationship of conspecific saplings and adults(SRCSA)can regulate plant ***,very few studies have assessed SRCSA within fragmented forests,and we still largely unknown the relationship between SRCSA and species diversity in fragmented *** We calculated the mean strength of SRCSA using the spatial distribution data of saplings and adults with a log-transformed hierarchical offset-power model on 27 islands in a land-bridge island *** higher strength of SRCSA reflects a more negative relationship between the density of conspecific saplings and adults on an island(*** looser pattern of SRCSA).We tested the relationships among island attributes(*** area,the distance to the mainland—MD,and the distance to the nearest island—ND),SRCSA and species *** Findings The strength of SRCSA increased with ***,the species diversity significantly increased with the strength of SRCSA,and island area and the strength of SRCSA independently explained 26%and 6%of variation of species diversity,respectively,and their interactions explained 8%.Shade-intolerant and low-abundant species showed looser patterns of *** study suggests that SRCSA may have the effect of excluding species with a relatively low abundance in isolated island forests,which illustrates the importance of biotic interactions in maintaining plant diversity in fragmented *** results also emphasize that we should consider forest connectivity when testing the conspecific negative density dependence.

关键词： Community assembly Janzen–Connell hypothesis habitat fragmentation negative density dependence land-bridge islands species diversity maintenance spatial distribution

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NGANGSANG’S ARTISTIC CAREER

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China's Tibet 2021年第1期32卷 55-59页

作者： Wu yuchu 不详

In 1950,the People's Liberation Army marched to *** they passed through Kham area,the force attracted a large number of ethnic Tibetan youths who explicitly and voluntarily expressed their eagerness to join in the force.A certain Tibetan man from Derge and a young girl from Bathang,respectively named Ngangwang Phuntsok and Ngashi Yangzom。

关键词：艺术之路 Tibetan force.

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MY TALLEST TIBETAN FRIEND

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China's Tibet 2020年第2期31卷 65-67页

作者： Wu yuchu 不详

Back in 2014,during the opening ceremony for the Tibet Yak Museum,a hoard of guests came in from Beijing as well as from areas throughout *** adequate venue for accommodation for such a large event was an absolute *** Hotel was one *** location of its grounds was rather close to the museum's *** idea indeed made it convenient to hold various sorts of activities,regardless of the fact the hotel was somewhat old with little to no luxurious facilities,though the staff is known for excellent service.

关键词： Tibet hotel ceremony

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Rumu, the Library Curator from a Nomadic Family

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China's Tibet 2020年第1期31卷 63-66页

作者： Wu yuchu 不详

May 18 of 2013 was World Museum *** was on this day the preparatory office of the soonto-be-established Tibetan Yak Museum held a fundraising event at the venue's construction *** function was themed"Appreciation for Yak Memories and Their Creations."A Tibetan man hurriedly came on stage and then donated a pair of yak leather bags.

关键词： Tibetan Creation Family

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The Auxiliary Role of Large Language Models in Clinical Dialogues

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Journal of Electronic Research and Application 2024年第6期8卷 72-78页

作者： Haipeng Luo yuchu Zhang Nantong health College of Jiangsu Province Nantong 226000Jiangsu ProvinceChina Nanjing Forestry University Nanjing 210000Jiangsu ProvinceChina

In recent years,large language models(LLMs)have made significant progress in natural language processing(NLP).These models not only perform well in a variety of language tasks but also show great potential in the medical *** paper aims to explore the application of LLMs in clinical dialogues,analyzing their role in improving the efficiency of doctor-patient communication,aiding in diagnosis and treatment,and providing emotional *** paper also discusses the challenges and limitations of the model in terms of privacy protection,ethical issues,and practical *** comprehensive analysis,we conclude that applying LLMs in clinical dialogues is ***,it requires careful consideration and caution by practitioners in practice.

关键词： Large language models Clinical dialogues Natural language processing healthcare assistance Ethical issues

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