|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Prevalence of Autism Spectrum Disorder in China:A Nationwide Multi-center Population-based Study Among Children Aged 6 to 12 Years显示文摘This study aimed to obtain the first national estimate of the prevalence of autism spectrum disorder(ASD) in Chinese children.We targeted the population of 6 to 12-year-old children for this prevalence study by multistage convenient cluster sampling.The Modified Chinese Autism Spectrum Rating Scale was used for the screening process.Of the target population of 142,086 children,88.5%(n=125,806) participated in the study.A total of 363 children were confirmed as having ASD.The observed ASD prevalence rate was 0.29%(95% CI:0.26%-0.32%) for the overall population.After adjustment for response rates,the estimated number of ASD cases was867 in the target population sample,thereby achieving an estimated prevalence of 0.70%(95% CI:0.64%-0.74%).The prevalence was significantly higher in boys than in girls(0.95%;95% CI:0.87%-1.02% versus 0.30%;95%CI:0.26%-0.34%;P <0.001).Of the 363 confirmed ASD cases,43.3% were newly diagnosed,and most of those(90.4%) were attending regular schools,and 68.8% of the children with ASD had at least one neuropsychiatric comorbidity.Our findings provide reliable data on the estimated ASD prevalence and comorbidities in Chinese children. | Hao Zhou Xiu Xu Weili Yan Xiaobing Zou Lijie Wu Xuerong Luo Tingyu Li Yi Huang Hongyan Guan Xiang Chen Meng Mao Kun Xia Lan Zhang Erzhen Li Xiaoling Ge Lili Zhang Chunpei Li Xudong Zhang Yuanfeng Zhou Ding Ding Andy Shih Eric Fombonne Yi Zheng Jisheng Han Zhongsheng Sun Yong-hui Jiang Yi Wang LATENT-NHC Study Team | 2020 | Neuroscience Bulletin2020，36，9： | 158 |
| 2 | Progress in China's Unconventional Oil & Gas Exploration and Development and Theoretical Technologies显示文摘The new century has witnessed a strategic breakthrough in unconventional oil & gas.Hydrocarbon accumulated in micro-/nano-scale pore throat shale systems has become an important domain that could replace current oil & gas resources.Unconventional oil & gas plays an increasingly important role in our energy demand.Tight gas,CBM,heavy oil and asphaltic sand have served as a key domain of exploration & development,with tight oil becoming a 'bright spot' domain and shale gas becoming a 'hotspot' domain.China has made great breakthroughs in unconventional oil & gas resources,such as tight gas,shale gas,tight oil and CBM,and great progress in oil shale,gas hydrate,heavy oil and oil sand.China has an estimated(223-263)×10~8t of unconventional oil resources and(890-1260)×l0^(12)m^3 of gas resources.China has made a breakthrough for progress in unconventional oil & gas study.New progress achieved in fine-grained sedimentary studies related to continental open lacustrine basin large-scale shallow-water delta sand bodies,lacustrine basin central sandy clastic flow sediments and marine-continental fine-grained sediments provide a theoretical basis for the formation and distribution of basin central reservoir bodies.Great breakthroughs have been made in unconventional reservoir geology in respect of research methodology & technology,multi-scale data merging and physical simulation of formation conditions.Overall characterization of unconventional reservoirs via multi-method and multi-scale becomes increasingly popular and facilitates the rapid development of unconventional oil & gas geological theory,method and technology.The formation of innovative,continuous hydrocarbon accumulation theory,the establishment of the framework of the unconventional oil & gas geological theory system,and the determination of the implications,geological feature,formation mechanism,distribution rule and core technology of unconventional oil& gas geological study lays a theoretical foundation for extensive unconventional oil & gas exploration and development.Theories and technologies of unconventional oil & gas exploration and development developed rapidly,including some key evaluation techniques such as 'sweet spot zone' integrated evaluation and a six-property evaluation technique that uses hydrocarbon source,lithology,physical property,brittleness,hydrocarbon potential and stress anisotropy,and some key development &engineering technologies including micro-seismic monitoring,horizontal drilling & completion and 'factory-like' operation pattern, 'man-made reservoir' development,which have facilitated the innovative development of unconventional oil & gas.These breakthroughs define a new understanding in four aspects:①theoretical innovation;② key technologies;③ complete market mechanism and national policy support;and ④ well-developed ground infrastructure,which are significant for prolonging the life cycle of petroleum industry,accelerating the upgrade and development of theories and technologies and altering the global traditional energy structure. | ZOU Caineng YANG Zhi ZHU Rukai ZHANG Guosheng HOU Lianhua WU Songtao TAO Shizhen YUAN Xuanjun DONG Dazhong WANG Yuman WANG Lan HUANG Jinliang WANG Shufang | 2015 | Acta Geologica Sinica(English Edition)2015，89，3： | 27 |
| 3 | Field released transgenic papaya effect on soil microbial communities and enzyme activities显示文摘Soil properties, microbial communities and enzyme activities were stud ied in soil amended with replicase (RP)-transgenic or non-transgenic papaya unde r field conditions. Compared with non-transgenic papaya, significant differences (P<0.05) were observed in total nitrogen in soils grown with transgenic papaya. There were also significant differences (P<0.05) in the total number of colony forming units (CFUs) of bacteria, actinomycetes and fungi between soils amended with RP-transgenic plants and non-transgenic plants. Compared with non-transgen ic papaya, the total CFUs of bacteria, actinomycetes and fungi in soil with tran sgenic papaya increased by 0.43—1.1, 0.21—0.80 and 0.46—0.73 times respective ly. Significantly higher (P<0.05) CFUs of bacteria, actinomycetes and fungi res istant to kanamycin (Km) were obtained in soils with RP-transgenic papaya than t hose with non-transgenic papaya in all concentrations of Km. Higher resistance q uotients for Kmr (kanamycin resistant) bacteria, actinomycetes and fungi were fo und in soil planted with RP-transgenic papaya, and the resistance quotients for Kmr bacteria, actinomycetes and fungi in soils with transgenic papaya increased 1.6—4.46, 0.63—2.5 and 0.75—2.30 times. RP-transgenic papaya and non-transg enic papaya produced significantly different enzyme activities in arylsulfatase (5.4—5.9x), polyphenol oxidase (0.7—1.4x), invertase (0.5—0.79x), cellulase ( 0.23—0.35x) and phosphodiesterase (0.16—0.2x). The former three soil enzymes appeared to be more sensitive to the transgenic papaya than the others, and cou ld be useful parameters in assessing the effects of transgenic papaya. Transgen ic papaya could alter soil chemical properties, enzyme activities and microbial communities. | WEI Xiang-dong ZOU Hui-ling CHU Lee-min LIAO Bin YE Chang-min LAN Chong-yu | 2006 | Journal of Environmental Sciences2006，18，4： | 22 |
| 4 | Human urokinase-type plasminogen activator gene-modifiedbone marrow-derived mesenchymal stem cells attenuateliver fibrosis in rats by down-regulating the Wnt signalingpathway显示文摘AIM: To evaluate the therapeutic effects of bone marrow-derived mesenchymal stem cells(BMSCs) with human urokinase-type plasminogen activator(u PA) on liver fibrosis, and to investigate the mechanism of gene therapy.METHODS: BMSCs transfected with adenovirusmediated human urokinase plasminogen activator(Adu PA) were transplanted into rats with CCl4-induced liver fibrosis. All rats were sacrificed after 8 wk, and their serum and liver tissue were collected for biochemical, histopathologic, and molecular analyzes. The degree of liver fibrosis was assessed by hematoxylin and eosin or Masson's staining. Western blot and quantitative reverse transcription-polymerase chain reaction were used to determine protein and m RNA expression levels.RESULTS: Serum levels of alanine aminotransferase, aminotransferase, total bilirubin, hyaluronic acid, laminin, and procollagen type Ⅲ were markedly decreased, whereas the levels of serum albumin were increased by u PA gene modified BMSCs treatment. Histopathology revealed that chronic CCl4-treatment resulted in significant fibrosis while u PA gene modified BMSCs treatment significantly reversed fibrosis. By quantitatively analysing the fibrosis area of liver tissue using Masson staining in different groups of animals, we found that model animals with CCl4-induced liver fibrosis had the largest fibrotic area(16.69% ± 1.30%), while fibrotic area was significantly decreased by BMSCs treatment(12.38% ± 2.27%) and was further reduced by u PA-BMSCs treatment(8.31% ± 1.21%). Both protein and m RNA expression of β-catenin, Wnt4 and Wnt5 a was down-regulated in liver tissues following u PA gene modified BMSCs treatment when compared with the model animals.CONCLUSION: Transplantation of u PA gene modified BMSCs suppressed liver fibrosis and ameliorated liver function and may be a new approach to treating liver fibrosis. Furthermore, treatment with u PA gene modified BMSCs also resulted in a decrease in expression of molecules of the Wnt signaling pathway. | Zhi-Gang Ma Xiao-Dan Lv Ling-Ling Zhan Lan Chen Qi-Yuan Zou Ji-Qiao Xiang Jiao-Li Qin Wei-Wei Zhang Zhao-Jing Zeng Hui Jin Hai-Xing Jiang Xiao-Ping Lv | 2016 | World Journal of Gastroenterology2016，22，6： | 21 |
| 5 | Novel and potent inhibitors targeting DHODH are broad-spectrum antivirals against RNA viruses including newly-emerged coronavirus SARS-CoV-2显示文摘Emerging and re-emerging RNA viruses occasionally cause epidemics and pandemics worldwide,such as the on-going outbreak of the novel coronavirus SARS-CoV-2.Herein,we identified two potent inhibitors of human DHODH,S312 and S416,with favorable drug-likeness and pharmacokinetic profiles,which all showed broad-spectrum antiviral effects against various RNA viruses,including influenza A virus,Zika virus,Ebola virus,and particularly against SARS-CoV-2.Notably,S416 is reported to be the most potent inhibitor so far with an EC5o of 17 nmol/L and an SI value of 10,505.88 in infec-ted cells.Our results are the first to validate that DHODH is an attractive host target through high antiviral efficacy in vivo and low virus replication in DHODH knock-out cells.This work demonstrates that both S312/S416 and old drugs(Leflunomide/Teriflunomide)with dual actions of antiviral and immuno-regulation may have clinical potentials to cure SARS-CoV-2 or other RNA viruses circulating worldwide,no matter such viruses are mutated or not. | Rui Xiong Leike Zhang Shiliang Li Yuan Sun Minyi Ding Yong Wang Yongliang Zhao Yan Wu Weijuan Shang Xiaming Jiang Jiwei Shan Zihao Shen Yi Tong Liuxin Xu Yu Chen Yingle Liu Gang Zou Dimitri Lavillete Zhenjiang Zhao Rui Wang Lili Zhu Gengfu Xiao Ke Lan Honglin Li Ke Xu | 2020 | Protein & Cell2020，11，10： | 14 |
| 6 | Helicobacter pylori infection and esophageal cancer risk:An updated meta-analysis显示文摘AIM:To clarify the association between Helicobacter pylori(H.pylori)infection and the risk of esophageal carcinoma through a meta-analysis of published data.METHODS:Studies which reported the association between H.pylori infection and esophageal cancer published up to June 2013 were included.The odds ratios(ORs)and corresponding 95%CIs of H.pyloriinfection on esophageal cancer with respect to health control groups were evaluated.Data were extracted independently by two investigators and discrepancies were resolved by discussion with a third investigator.The statistical software,STATA(version 12.0),was applied to investigate heterogeneity among individual studies and to summarize the studies.A meta-analysis was performed using a fixed-effect or random-effect method,depending on the absence or presence of significant heterogeneity.RESULTS:No significant association between H.pylori infection and esophageal squamous cell carcinoma(ESCC)risk was found in the pooled overall population(OR=0.97,95%CI:0.76-1.24).However,significant associations between H.pylori infection and ESCC risk were found in Eastern subjects(OR=0.66,95%CI:0.43-0.89).Similarly,cytotoxin-associated gene-A(CagA)positive strains of infection may decrease the risk of ESCC in Eastern subjects(OR=0.77,95%CI:0.65-0.92),however,these associations were not statistically significant in Western subjects(OR=1.26,95%CI:0.97-1.63).For esophageal adenocarcinoma(EAC)the summary OR for H.pylori infection and CagA positive strains of infection were 0.59(95%CI:0.51-0.68)and 0.56(95%CI:0.45-0.70),respectively.CONCLUSION:H.pylori infection is associated with a decreased risk of ESCC in Eastern populations and a decreased risk of EAC in the overall population. | Fa-Jun Xie Yi-Ping Zhang Qiu-Qing Zheng Hong-Chuan Jin Fa-Liang Wang Ming Chen Lan Shao De-Hong Zou Xin-Min Yu Wei-Min Mao | 2013 | World Journal of Gastroenterology2013，19，36： | 11 |
| 7 | Full-color quantum dots active matrix display fabricated by ink-jet printing显示文摘Making full-color active matrix display based on quantum dot light emitting diodes(AM-QLEDs) via ink-jet printing is attractive in display industry due to QLEDs' wide color gamut and their potential manufacturing advantages of large screen size and low cost. The challenges for realizing AM-QLED display are how to achieve high quality films through ink-jet printing, multi-color patterning, electroluminescence(EL) color purity, and high efficiency. Herein, a 2-inch diagonal full-color AM-QLEDs display with pixel density of 120 pixels per inch(PPI) fabricated by ink-jet printing technique is presented. Driven by a metal oxide TFT(MOTFT) back-panel, the display exhibits a maximum brightness of 400 cd m.2, and a color gamut of 109%(NTSC 1931). The red, green, and blue(RGB) monochrome QLEDs passive matrix panels fabricated by ink-jet printing technique have a current efficiency(CE) of 2.5, 13.9, and 0.30 cd A.1, respectively. To the best of our knowledge, the efficiencies are the highest among passive matrix QLEDs panels made by ink-jet printing technique. The ink-jet printed QDs films show good thickness uniformity due to high viscosity and low volatility of the printable inks, and no cross-contamination between adjacent pixels resulting from the hydrophobic pixel defining layer. | Congbiao Jiang Lan Mu Jianhua Zou Zhiwei He Zhenji Zhong Lei Wang Miao Xu Jian Wang Junbiao Peng Yong Cao | 2017 | Science China Chemistry2017，60，10： | 10 |
| 8 | Increased rate change over time of a sphincter-saving procedure for lower rectal cancer显示文摘背景:全部的中央直肠的切除(TME ) 与低直肠的癌症为更多的病人增加了括约肌保藏(SP ) 的率。这里,我们分析在更低的直肠的癌症和他们的相关因素保存率的括约肌的变化。方法:我们回顾地与更低的直肠的癌症考察了 316 个病人的医药记录,从肛门直肠的线的 1 ~ 5 厘米,从 1994 年 8 月有外科的切除术到 2005 年 11 月。12 年的跨度被划分成 2 个时期:时期我(8 月 1994-December 日 1998 ) 并且时期 II (1 月 1999-November 日 2005 ) ,基于日期(1999 年 1 月) 什么时候标准全部的中央直肠的切除(TME ) 被介绍。病人基于操作被划分成二个组:腹会阴切除术(4 月) 或 SP 外科。SP 率,漏和另外的 clinico 病理学的特征被比较在之间两次时期并且在二个不同的组之间。结果:SP 率在时期在 12 年显著地增加了,从 44.9% 我到 76.2% 在时期 II (P = 0.000 ) 。显著地影响 SP 的因素从肛门直肠的线包括了肿瘤的距离,性,时间时期,内部传播和组织分化的圆周(P <
0.05 ) 。有效差量被检测在之间两次在性,输血体积和公爵的时期是舞台(P <
0.05 ) 。漏率在时期是 2.7% 我并且 1.3% 在时期 II (P >
0.05 ) 。结论:在学习的 12 年的经期上, SP 在直肠的癌症评价 1 - 当输血体积由于 TME 的介绍减少了时,从肛门直肠的线的 5 厘米显著地增加了。然而, TME 没在操作时间和漏率上有效果。 | WU Xiao-jian WANG Jian-ping WANG Lei HE Xiao-sheng ZOU Yi-feng LIAN Lei ZHANG Long-juan LAN Ping | 2008 | Chinese Medical Journal2008，，7： | 10 |
| 9 | Retrospective Study of Castleman's Disease:A Report of Fourteen Cases and Review of the Literature显示文摘OBJECTIVE To enhance the understanding of Castleman’s disease (CD), and to improve its diagnosis and management. METHODS Clinical features and related information on diagnosis and treatment of 14 cases of CD were retrospectively analyzed and the literature reviewed. RESULTS Based on the clinical classification, localized CD was found in 8 of the 14 cases. Both the results of lymph node biopsy and histopathology indicated they were a hyaline-vascular type. The multicentric type CD was detected in 6 cases, among which 4 were plasma cell type and 2 mixed type based on histopathologic examination. There were a variety of clinical situa-tions in the 14 cases, with a lack of specificity. They were previously misdiag-nosed as other diseases, and final diagnosis depended on a histopathologic examination. The 8 patients with localized CD underwent excision, without recurrence up to now. The 6 patients with multicentric-type CD were treated with glucocorticoids or combined chemotherapy, and all achieved remission. CONCLUSIONS CD has complicated clinical manifestations and is difficult to diagnose. Lymph node biopsy is important for early diagnosis. An optimal curative effect can be achieved with a suitable therapeutic option, based on histopathology and clinical classification. | Waiyi Zou Huixia Lan Chang Su Yunxian Chen Juan Li Shaokai Luo | 2007 | Chinese Journal of Clinical Oncology2007，4，3： | 8 |
| 10 | Simulation of hydrological processes of mountainous watersheds in inland river basins: taking the Heihe Mainstream River as an example显示文摘The hydrological processes of mountainous watersheds in inland river basins are complicated.It is absolutely significant to quantify mountainous runoff for social,economic and ecological purposes.This paper takes the mountainous watershed of the Heihe Mainstream River as a study area to simulate the hydrological processes of mountainous watersheds in inland river basins by using the soil and water assessment tool(SWAT)model.SWAT simulation results show that both the Nash–Sutcliffe efficiency and the determination coefficient values of the calibration period(January 1995 to December 2002)and validation period(January 2002 to December 2009)are higher than 0.90,and the percent bias is controlled within±5%,indicating that the simulation results are satisfactory.According to the SWAT performance,we discussed the yearly and monthly variation trends of the mountainous runoff and the runoff components.The results show that from 1996 to 2009,an indistinctive rising trend was observed for the yearly mountainous runoff,which is mainly recharged by lateral flow,and followed by shallow groundwater runoff and surface runoff.The monthly variation demonstrates that the mountainous runoff decreases slightly from May to July,contrary to other months.The mountainous runoff is mainly recharged by shallow groundwater runoff in January,February,and from October to December,by surface runoff in March and April,and by lateral flow from May to September. | ZhenLiang YIN HongLang XIAO SongBing ZOU Rui ZHU ZhiXiang LU YongChao LAN YongPing SHEN | 2014 | Journal of Arid Land2014，6，1： | 7 |
| 11 | Efficacy and safety of Xinglouchengqi decoction for acute ischemic stroke with constipation:study protocol for a randomized con-trolled trial显示文摘OBJECTIVE: To investigate the efficacy and safety of Xinglouchengqi(XLCQ) decoction in treatment of acute ischemic stroke with constipation.METHODS: In this prospective, multicenter, assessor-blinded, randomized controlled trial, 360 eligible participants will be randomized to the XLCQ group or the control group. Participants in the XLCQ group will receive XLCQ decoction, while those in the control group will undergo clysis therapy using glycerin enemas or oral administration of lactulose solution. Both groups will undergo a treatment period of(5 ± 2) d and a 1-month follow-up.The primary outcome measure will be the Constipation Scale score. The secondary outcome measures will include scores on the National Institutes of Health Stroke Scale, the Traditional Chinese Medicine(TCM) Stroke Scale, the Diagnostic Scale for TCM Syndromes of Ischemic Stroke and TCM Scale for Syndrome of Phlegm-heat and Fu-organ Excess.Therapeutic mechanism outcomes and safety outcomes will also be assessed. Assessments will be conducted at baseline, at the end of the treatment period, and at the follow-up. Moreover, daily visits will be scheduled to grade the status of constipation during the treatment period.DISCUSSION: The results of this study will provide scientific and objective data with which to assess the efficacy and safety of XLCQ decoction for patients with acute ischemic stroke and constipation. | Chen Pei Zhang Yong Ling Lili Chen Xing Ren Yi Jiang Lan Wu Shuang Wang Wenting Wang Yuguang Zou Yihuai | 2017 | Journal of Traditional Chinese Medicine2017，37，6： | 7 |
| 12 | A Modified max-log-MAP Decoding Algorithm for Turbo Decoding显示文摘Turbo decoding is iterative decoding, and the MAP algorithm is optimal in terms of performance in Turbo decoding. The log MAP algorithm is the MAP executed in the logarithmic domain, so it is also optimal. Both the MAP and the log MAP algorithm are complicated for implementation. The max log MAP algorithm is derived from the log MAP with approximation, which is simply compared with the log MAP algorithm but is suboptimal in terms of performance. A modified max log MAP algorithm is presented in this paper, based on the Taylor series of logarithm and exponent. Analysis and simulation results show that the modified max log MAP algorithm outperforms the max log MAP algorithm with almost the same complexity. | ZOU Xue lan, FENG Guang zeng (Mobile Communication Lab, Nanjing University of Posts and Telecommunications,Nanjing 210003, P. R. China) | 2002 | The Journal of China Universities of Posts and Telecommunications2002，9，1： | 7 |
| 13 | Preparation and Characterization of Microencapsulated Hexadecane Used for Thermal Energy Storage显示文摘Polyurea microcapsules about 2.5μm in diameter containing phase change material for thermal energy storage application were synthesized and characterized by interfacial polycondensation method with toluene-2,4-diisocyanate and ethylenediamine as monomers in an emulsion system. Hexadecane was used as a phase change material and OP, which is nonionic surfactant, and used as an emulsifier. The chemical structure and thermal behavior of the microcapsules were investigated by FTIR and thermal analysis respectively. The results show encapsulated hexadecane has a good potential as a solar energy storage material. | Guang Long ZOU Zhi Cheng TAN Xiao Zheng LAN Li Xian SUN Tao ZHANG | 2004 | Chinese Chemical Letters2004，15，6： | 7 |
| 14 | ILF3 is a substrate of SPOP for regulating serine biosynthesis in colorectal cancer显示文摘The Serine-Glycien-One-Carbon(SGOC)pathway is pivotal in multiple anabolic processes.Expression levels of SGOC genes are deregulated under tumoeigenic condltions,suggesting panicipation of oncogenes in deregulating the SGOC biosynthetic pathway.However,the underlying mechanism remains elusive.Here,we identifed that Interleukin enfiarccer-binding factor 3(ILF3)is overexpressed in primary CRC patient specimens and correlates with poor progroosis.ILF3 is critical in regulating the SGOC pathway by directly regulating the mRNA stability of SGOC genes,thereby increasing SGOC genes expression and facilitating tumor growth.Mehhanktic studies showed that the EGF-MIEK-ERK pathway nnediates ILF3 phosphorylation,which hin ders E3 ligase speckle-type POZ protein(SPOP)-mediated poly-ubiquitination and degradation of ILF3.Sign iftca ntly,combination of SGOC inhibitor and the anti-EGFR monoclonal antibody cetuximab can hinder the growth of patient-derived xenografts that sustain high ERK-ILF3 levels.Taken together,deregutation of ILF3 via the EGF-ERK signaling plays an important role in systemic serine metabolic reprogramming and confers a predilection toward CRC development.Our findings indicate that clinical evaluation of SCOC inhibitor is warranted for CRC patients with ILF3 overexpression. | Kai Li Jian-lin Wu Baifu Qin Zongmin Fan Qin Tang Weisi Lu Haipeng Zhang Fan Xing Manqi Meng Shaomin Zou Wenxia Wei Honglei Chen Jian Cai Huaiming Wang Hui Zhang Jiayue Cai Ling Fang Xiqing Bian Chuangqi Chen Ping Lan Bart Ghesquiere Lekun Fang Mong-Hong Lee | 2020 | Cell Research2020，30，2： | 6 |
| 15 | Paleoceanographic Indicators for Early Cambrian Black Shales from the Yangtze Platform, South China: Evidence from Biomarkers and Carbon Isotopes显示文摘The lower Cambrian Niutitang Formation, a widespread black shale deposition, is of geological interest because of its polymetallic beds, Cambrian explosion, depositional ages, dramatic environmental changes and so on. Previous study focused mainly on inorganic geochemistry and few studies have investigated the organic fractions of upper Neoproterozoic-lower Cambrian strata in South China. Here we report a study of biomarkers plus organic carbon isotopes for black shales from Ganziping, Hunan Province (China). All the saturated hydrocarbon fractions have a unimodal distribution of n-alkanes, a high content of short-chain alkanes and maximize at C 19 or C 20 (C 23 for sample Gzh00-1). The C 27 /C 29 sterane ratio ranges from 0.77 to 1.20 and 4-methylsteranes are in low abundance. These parameters indicate that algae and bacteria are the important primary producers. Furthermore, biomarker maturity proxies show the samples to be higher maturity. The low Pr/Ph values (<0.7) suggest that the samples were deposited under anoxic conditions and, likely, under stratified water columns. In addition, 25-norhopanes and gammacerane are present as diagnostic indicators of normal marine salinity and dysoxic to anoxic conditions. During the Early Tommotian, known to coincide with a transgression event, small shelly fossils increased in abundance and diversity. Moreover, positive δ 13 C org excursions close to 1.4‰ occur at the base of the Tommotian stage. In summary, the Early Cambrian black shales were deposited under dramatic paleoenvironmental changes, including oceanic anoxia, higher primary productivity and sea-level rise. | CHEN Lan ZHONG Hong HU Ruizhong XIAO Jiafei TSAI Louis Loung-Yie LIN Andrew Tien-Shun ZOU Yanrong | 2012 | Acta Geologica Sinica(English Edition)2012，86，5： | 6 |
| 16 | Skill Premium, Biased Technological Change and Income Differences显示文摘Using 1987-2006 panel data for China, we explore the dynamics of the skill premium. Thepresent paper focuses on the skill premium as an explanation for why income differences areso large in China. Our empirics show that: the rise in the relative supply of skilled laborresults in an increase, instead of a decrease, in the skill premium; domestic investment is notcomplementary with skill formation; the skill premium is higher in more developed provinces;economic openness facilitates an increase in the skill premium; whether foreign directinvestment induces skill-based technology change or not, it drives up the skill premium. Anarray of policy prescriptions for reducing income differences and ensuring sustained economicgrowth are provided. | Wei Zou Lan Liu Ziyin Zhuang | 2009 | China & World Economy2009，17，6： | 6 |
| 17 | Novel high-resolution DOA estimation using subspace projection method显示文摘The performance of multiple signal classification(MUSIC) algorithm with regard to solving closely spaced direction of arrivals(DOAs) depends strongly upon the signal-to-noise ratio(SNR) and snapshots.In order to solve this problem,a method by reconstructing the spatial spectrum function with both noise subspace and signal subspace is presented in this paper.The key idea is to apply the full information contained in covariance matrix and change the projection weights of steering vector on the noise and signal subspace by their revised eigenvalues,respectively.Comparing with the MUSIC algorithm,it does not increase any computational complexity either,and remarkably,it has the advantages of simultaneously reducing noise and keeping the high-resolution ability under low SNR and small sample sized scenarios.Simulation and experiment results are included to demonstrate the superior performance of the proposed algorithm. | SI Wei-jian LAN Xiao-yu ZOU Yan | 2012 | The Journal of China Universities of Posts and Telecommunications2012，19，4： | 6 |
| 18 | Inkjet printing for electroluminescent devices: emissive materials, film formation, and display prototypes显示文摘打印的 Inkjet (IJP ) 是为以一种划算的方式的 realizinghigh 精确性模式的一种万用的技术。它是 consideredto 是最有希望的候选人之一代替 expensivethermal 蒸发技术,它被制作便宜、大 electroluminescent 设备的 difficultyof 妨碍,如此的 asorganic 轻射出的二极管(OLED ) 和量点 light-emittingdiodes (QLED ) 。在这邀请评论,我们首先介绍一些可印刷的放射性的材料的 recentprogress,包括在 OLEDsand QLED 的聚合物,小分子,和无机的胶体的量点 emitters。随后,我们在关键因素上集中那 influencefilm 形成。由探索稳定的墨水明确的表达,选择 printparameters ,并且实现微滴免职控制, uniformfilm 能被获得,它接着 performance.Finally 改进设备,一系列出色的 打印inkjet 的 OLED 和 QLED prototypedisplay 面板被总结,为大、高分辨率的扁平的面板的制造显示的 IJPin 建议有希望的未来。 | Luhua LAN Jianhua ZOU Congbiao JIANG Benchang LIU Lei WANG Junbiao PENG | 2017 | Frontiers of Optoelectronics2017，10，4： | 5 |
| 19 | Electrical and thermal transport behaviours of high-entropy perovskite thermoelectric oxides显示文摘Oxide-based ceramics could be promising thermoelectric materials because of their thermal and chemical stability at high temperature.However,their mediocre electrical conductivity or high thermal conductivity is still a challenge for the use in commercial devices.Here,we report significantly suppressed thermal conductivity in SrTiO_(3)-based thermoelectric ceramics via high-entropy strategy for the first time,and optimized electrical conductivity by defect engineering.In high-entropy(Ca_(0.2)Sr_(0.2)Ba_(0.2)Pb_(0.2)La_(0.2))TiO_(3)bulks,the minimum thermal conductivity can be 1.17 W/(m·K)at 923 K,which should be ascribed to the large lattice distortion and the huge mass fluctuation effect.The power factor can reach about 295μW/(m·K^(2))by inducing oxygen vacancies.Finally,the ZT value of 0.2 can be realized at 873 K in this bulk sample.This approach proposed a new concept of high entropy into thermoelectric oxides,which could be generalized for designing high-performance thermoelectric oxides with low thermal conductivity. | Yunpeng Zheng Mingchu Zou Wenyu Zhang Di Yi Jinle Lan Ce-Wen Nan Yuan-Hua Lin | 2021 | Journal of Advanced Ceramics2021，10，2： | 5 |
| 20 | Study of temperature and precipitation change in upstream mountain area of the Hexi inland river basin since 1960s显示文摘All rivers in the Hexi inland region of Gansu Province, China, originate from the northern slope of the Qilian Mountains. They are located in the southern portion of the region and respectively belong to the three large river systems from east to west, the Shiyang, Heihe and Shule river basins. These rivers are supplied by precipitation, snowmelt and ice-melt runoff from the Qilian Mountain area. Therefore, changes of precipitation and temperature in the upstream watersheds of these rivers have an important effect on changes of mountainous runoff and reasonable utilization of water resources in this region. For this reason, the Qilian Mountain area, upstream watersheds and runoff forming areas of these rivers are chosen as the study area. The change characteristics and variation trend of temperature and precipitation in this area under the backdrop of global warming are analyzed based on observational data of relational weather and hydrologic stations in the area. Results show that temperatures in the upriver mountain areas of these three large river basins have been increasing, although the increasing degree is differentially affected by global warming. The rising extent of annual and seasonal temperatures in the upstream mountain area of the Shule river basin located in the western Qilian Mountains, were all largest over the past 50 years. Precipitation in the upstream mountain areas of Hexi region' three river basins located respectively in the western, middle and eastern Qilian Mountains have been presenting an increasing trend to varying degrees as a whole for more than 50 years. This means that climate in the upstream mountain areas of Hexi region' three river basins are becoming increasingly warmer and moister over the past 50 years, which will be very good for the ecological environment and agricultural production in the region. | YongChao Lan HongLang Xiao XingLin Hu HongWei Ding SongBing Zou ChengFang La Jie Song | 2012 | Research in Cold and Arid Regions2012，4，6： | 4 |
您所在的机构暂未开通此部分的功能，请联系管理员