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| 1 | Isotope Chronology and Geochemistry of the Lower Carboniferous Granite in Xilinhot, Inner Mongolia, China显示文摘Geochronological and geochemical analyses were performed on K-feldspar granites and monzonitic granites from the Xilinhot area, Inner Mongolia, China. Zircon U/Pb ages indicate that the two types granites were emplaced during the Lower Carboniferous. The K-feldspar granites(332 Ma) have the typical A-type granite characteristics of a post-collision setting. The monzonitic granites have an emplacement age of 323 Ma. Zircon εHf values of the former range from +12.8 to +14.2, with an average T_(DM2) of 453 Ma. The latter have lower zircon ε_(Hf) values, ranging from +5.4 to +10.7, with an average T_(DM2) of 798 Ma. The strong, positive ε_(Hf) values of the zircon indicate that both sets of samples are from a juvenile crust formed in an oceanic crust subduction stage, although the monzonitic granite may have undergone a hybridization of crustal materials. These results indicate a younger post orogenic event. The Paleo-Asian Ocean had closed before the Early Carboniferous and the Xilinhot area started its post-orogenic evolution with an extensional tectonic environment during the Early Carboniferous. | Xiaocheng Zhao Wenxiao Zhou Dong Fu Bo Huang Mengchun Ge | 2018 | Journal of Earth Science2018，29，2： | 8 |
| 2 | Micro RNA profiles and potential regulatory pattern during the early stage of spermatogenesis in mice显示文摘Spermatogenesis is a complicated and poorly understood process that relies on the precise regulation of the self-renewal and differentiation of spermatogonia. In many organisms, micro RNAs(mi RNAs) are involved in multiple developmental processes as critical regulators of transcriptional and post-transcriptional gene silencing. This study investigated the expression pattern of mi RNAs in type B spermatogonia cells(BSc) and primary spermatocytes(PSc) of mice, using a high-throughput small RNA sequencing system. The results revealed that the expression levels of Let-7 family mi RNAs were remarkably high in both cell types. Furthermore, the expression levels of mi R-21, mi R-140-3p, mi R-103, mi R-30 a, mi R-101 b and mi R-99 b were decreased during the transformation from BSc to PSc. These mi RNAs target vital genes that participate in apoptosis, cell proliferation and differentiation, junction assembly and cell cycle regulation. These results highlight the indispensable role of mi RNAs in spermatogenesis. | LUO MengMeng HAO LiLi HU Fen DONG YaNan GOU LiXia ZHANG WenDian WANG Xin ZHAO YuHui JIA MengChun HU SongNian ZHANG XiuJun | 2015 | Science China(Life Sciences)2015，58，5： | 6 |
| 3 | Differentiations of geographic distribution and subsistence strategies between Tibetan and other major ethnic groups are determined by the physical environment in Hehuang Valley显示文摘The people of the Tibetan Plateau have received extensive attention from scholars because of their unique adaptability to the low temperature and anoxic environments. However, the Tibetan communities and their habitats in the low-altitude regions of the plateau have rarely been studied in a scientific manner. Based on the extraction of geographic information of 197 towns in the Hehuang Valley and on variance analysis, this study examines the habitats and subsistence strategies of the Tibetans and other major ethnic groups in the low-latitude region of the Tibetan Plateau. Our statistical results show that the annual average temperature of Tibetan habitats in the Hehuang Valley is relatively high. The relatively warm environment of the valley allows the Tibetans in that area to cultivate wheat and barley and raise cattle and sheep—a subsistence strategy significantly different from that of other Tibetans in the high-altitude regions in the Tibetan Plateau. In addition, the Tibetan communities in the Hehuang Valley include similar agri-pastoral ethnic groups (including Hui and Salar), both of which adopt similar subsistence strategies. The agricultural ethnic groups (Han and Tu) live in a relatively cool and humid environment facilitating agricultural production, while the agri-pastoral ethnic groups (Tibetan, Hui, and Salar) inhabit relatively warm and arid environment in the valley. Due to the lack of agricultural activities, agri-pastoral groups must also engage in animal husbandry to supplement their diet. In the Ando Tibetan region, the subsistence strategies of the ethnic groups are closely related to their physical environment.Those ethnic groups communicate among themselves, integrate, and influence each other, resulting in a diversified culture. This study proves that the habitat variation at a regional scale corresponds significantly to the variation of subsistence strategies. Our findings may further refine knowledge about the human-environmental relationships of Tibetans and lead future research towards using quantitative methods to analyse the intersection of physical environment and ethnic groups' distribution. | Xin JIA Harry F.LEE Mengchun CUI Guoquan CHENG Yang ZHAO Hong DING Ricci P.H.YUE Huayu LU | 2019 | Science China Earth Sciences2019，62，2： | 2 |
| 4 | Proactive intrusion prevention system显示文摘 | DING Zhifang XU Mengchun ZHAO Xin | | 0，，25： | 1 |
| 5 | Salt-tolerant Microbiota Enhancing Contaminants Removal from Mariculture Wastewater Containing Sulfamethoxazole in an A/O-MBBR显示文摘The wide application of antibiotics in aquaculture requires an efficient treatment of the wastewater before discharging it into the environment.During the wastewater treatment,the influence of antibiotics on the performance of bioreactor should be well revealed due to their toxicity to the functional microbial community.In this study,the effect of feeding 10-30 mg L−1 sulfamethoxazole(SMX)in influent on the performance of an anoxic/oxic-moving bed biofilm reactor(A/O-MBBR)treating mariculture wastewater and the responding change of biofilm microbial communities was investigated.The COD average removal rate remained at 94.61%-97.34%with the dosage of SMX.Compared with that,the nitrifying removals of NH4+-N and NO2−-N were violently inhibited by 30 mg L−1 SMX and denitrifying removal of the NO3−-N decreased obviously with 20 mg L−1 or more SMX.The microbial community in the successful startup bioreactor was relatively abundant,while the diversity of microbial community decreased with the increase of feeding SMX.The salt-tolerant and SMX-resistant genera Arcobacter,Thiothrix,Desulfuromusa and Nitrosomonas were gradually enriched and finally played a vital role in converting COD and recycling nitrogen and sulfur.Hence,the present A/O-MBBR reactor with the salt-tolerant functional microbiota achieved efficient removal of pollutants in the presence of low concentration(e.g.,10 mg L−1)SMX. | ZHENG Bingbing PANG Wenhui ZHAO Yangguo GUO Liang GAO Mengchun JIN Chunji SHE Zonglian | 2020 | Journal of Ocean University of China2020，19，4： | 1 |
| 6 | Performance Evaluation and Microbial Shift of Sequencing Batch Biofilm Reactor Treating Synthetic Mariculture Wastewater Under Different Dissolved Oxygen at Aerobic Phase显示文摘The impact of dissolved oxygen(DO)at aerobic phase on the nitrogen removal,extracellular polymeric substances(EPS),microbial activity and microbial community of sequencing batch biofilm reactor(SBBR)have been evaluated in treating mariculture wastewater.The oxygen uptake rate and nitrification rate declined with DO concentration from 3–4 to 1–1.5mgL^(-1),whereas the denitrification rate had an increment.The activities of nitrifying enzymes reduced with the decrease of DO concentration at aerobic phase,but those of denitrifying enzymes illustrated opposite results.The nitrification and denitrification rates displayed the similar variation tendency with the relevant enzymatic activities as DO concentration decreased.The protein(PN)and polysaccharide(PS)content in EPS decreased as DO concentration declined,whereas the PN/PS ratio increased.The microbial community showed obvious difference as DO concentration decreased from 3–4 to 1–1.5mgL^(-1).The microbial co-occurrence,keystone taxa and sig-nificant difference illustrated some variations at different DO concentrations. | HUO Siyue LIU Wenjie ZHAO Changkun LU Shuailing WANGQianzhi SHE Zonglian ZHAO Yangguo ZHANG Zhiming GUO liang JI Junyuan JIN Chunji GAO Mengchun | 2023 | Journal of Ocean University of China2023，22，6： | 0 |
| 7 | Characteristics of Sulfide Removal by Hydrogenovibrio thermophilus Strain TT in Mariculture System显示文摘To biologically inhibit the production of highly toxic sulfide in the aquaculture area,one bacterium,designated as Hydrogenovibrio thermophilus strain TT,was isolated from sediment in Jiaozhou Bay,China.The strain was found to be microaerobic mixtrophic,employing both carbon dioxide and organic carbons,e.g.citrate,lactate,glucose,and peptone as carbon sources.When it oxidized the sulfide and thiosulfate,oxygen was the optimal electron acceptor,followed by nitrite and nitrate,which benefited to removal of sulfide under low-oxygen mariculture environment.In addition,the strain TT exhibited remarkable tolerance of sulfide and thiosulfate in seawater,and it was able to oxidize 18.52 mmol L^-1 S^2-in 12 h or 45 mmol L^-1 S2O3^2-in 24 h at initial pH 7.0-9.0,30-40℃.Therefore,this strain showed a quite promising application for biological remediation of sulfide-contaminated mariculture system. | WANG Xiaoqiong ZHAO Yangguo WANG Junpeng ZHANG Mo BAI Jie1 GUO Liang GAO Mengchun | 2019 | Journal of Ocean University of China2019，18，5： | 0 |
| 8 | Study of Excited Spectrum and Lifetime for 94MeV Ar Ions显示文摘Study of Excited Spectrum and Lifetime for 94MeV Ar IonsStudyofExcitedSpectrumandLifetimefor94MeVArIons￥WangYoude;LiuHuiping;... | Wang Youde Liu Huiping Yang Zhihu Ma Xinwen Zhao Mengchun Jiang Renbin and Wang winjue | 1995 | IMP & HIRFL Annual Report1995，，0： | 0 |
| 9 | Study of Highly Ionized Atom Ne显示文摘Study of Highly Ionized Atom NeStudyofHighlyIonizedAtomNe￥WangYoude;MaXinwen;LiuHuiping;YangZhihu;ZhaoMengchun;DuYifei;GuoTia... | Wang Youde Ma Xinwen Liu Huiping Yang Zhihu Zhao Mengchun Du Yifei Guo Tianrui and Wang Chunfang | 1995 | IMP & HIRFL Annual Report1995，，0： | 0 |
| 10 | Experimental study of electron capture excitation in collisions between Li-like N^(4+) ions and Na atoms显示文摘WITH the rapid development of the technique of ionized atoms, the charge states of atoms that can be obtained now are so high that the H-like U91+ ions and naked U92+ ions | LIU Zhanwen, ZHOU Sixin, ZHANG Wen, ZHANG Xuezhen GUOXiaohong, WANG Youde, MA Xinwen, YANGZhihu, LIU Huiping, ZHAO Mengchun, YANG Feng, PAN Guangyan and LI Dawan1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2. Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China | 1997 | Chinese Science Bulletin1997，42，5： | 0 |
| 11 | Excitation of Ar by Ar^(7+) Ions Impact at 2.3-3.0keV/u显示文摘Excitation of Ar by Ar^(7+) Ions Impact at 2.3-3.0keV/u￥WangYoude;YangZhihu;MaXinwen;LiuHuiping;ZhaoMengchun;ZhouSixin;LiuZha?.. | Wang Youde Yang Zhihu Ma Xinwen Liu Huiping Zhao Mengchun Zhou Sixin Liu Zhanwen Zhang Wen Zhang Xuezhen Guo Xiaohong Yang Feng Pan Guangyan and Li Dawan | 1994 | IMP & HIRFL Annual Report1994，，0： | 0 |
| 12 | Electron Impact Excitation of He^+ Ions in a Crossed Beam Experiment 显示文摘Electron Impact Excitation of He~+ Ions in a Crossed Beam Experiment ￥WandYoude;liuHuiping;ZhaoMengchun;MaXinwen;YangZhihu;Zh?.. | Wand Youde liu Huiping Zhao Mengchun Ma Xinwen Yang Zhihu Zhang Wen Liu Zhanwen Zhou Sixin Zhang Xuezhen Guo Xiaohong Pan Guangyan Li Dawanl and Yang Feng(Institute of Physics, the Chinese Academy of Sciences, Baijing.) | 1994 | IMP & HIRFL Annual Report1994，，0： | 0 |
| 13 | Electron Capture into Excited States in Collision between Li-like N^(4+) Ion and Na Target显示文摘Electron Capture into Excited States in Collision between Li-like N^(4+) Ion and Na Target￥LiuZhanwen;ZhouSixin;ZhangWen;Zhan?.. | Liu Zhanwen Zhou Sixin Zhang Wen Zhang Xuezhen Guo Xiaohong Ma Xinwen Yang Zhihu Liu Huiping Zhao Mengchun Wang Youde Li Dawan Yang Feng and Pan Guangyan(Institute of Physics, the Chinese Academy of Sciences, Beijing.) | 1994 | IMP & HIRFL Annual Report1994，，0： | 0 |
| 14 | Improvement of Beamfoil Spectroscope System显示文摘Improvement of Beamfoil Spectroscope SystemImprovementofBeamfoilSpectroscopeSystem￥MaXinwen;DuYifei;GuoTianrui;WangChunfang;W... | Ma Xinwen Du Yifei Guo Tianrui Wang Chunfang Wang Youde Yang Zhihu Liu Huiping and Zhao Mengchun | 1995 | IMP & HIRFL Annual Report1995，，0： | 0 |
| 15 | Screening the stage-specific expression gene from different germ cells of rat显示文摘Objective: To screen the stage-specific expression genes from rat spermatogonia, pachytene spermatocytes and round spermatids. Methods: Highly purified spermatogonia were isolated from 9-day-old rats, pachytene spermatocytes and round spermatids from adult rats by sedimentation velocity at unit gravity, using 2%-4% BSA gradient in DMEM/F12 medium. A mRNA differential display method was used for screening the stage-specific expression gene. Results: Nineteen differentially expressed cDNA fragments were obtained. After excluding the false positive cDNA fragments by dot blot, 13 cDNAs were selected to clone and sequence. To obtain longer cDNAs, six ESTs were used to screen the rat testis λ-zap II cDNA library. Two longer cDNA fragments, designated as LY21 and LM66, were obtained. The analysis with DNAMAN software indicated that LY21 had a long open reading frame coding 372 amino acids while LM66 had no long open reading frame. LY21 were highly homologous with hnRNP H1. To observe the expression patterns of LY21 gene in the testicular cells, we performed in situ hybridization on testis sections from adult rats. The LY21 gene expression was found in the spermatogonia and primary spermatocytes.Conclusion: This study indicated that LY21 gene was associated with spermatogenesis. Further studies will be needed to explore the function of LY21. | Jia Mengchun(贾孟春) Lou Lixia(娄利霞) Pei Kaiyan(裴开颜) Zhao Longmei(赵龙梅) Shi Xinquan(石心泉) | 2002 | 生殖医学杂志2002，11，z1： | 0 |
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