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Search Results: 1 - 10 of 78377 matches for " Chen Lirong "
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Pulmonary epithelioid hemangioendothelioma accompanied by bilateral multiple calcified nodules in lung
Xu Jinghong, Chen Lirong
Diagnostic Pathology , 2011, DOI: 10.1186/1746-1596-6-21
Abstract: Epithelioid hemangioendothelioma (formerly known as intravascular bronchioalveolar tumor, IVBAT) is an uncommon tumor of vascular endothelial origin, with an intermediate course between hemangioma and conventional angiosarcoma[1-3]. PEH typically occurs as bilateral multiple nodules among young women[1,4]. But some cases also develop as a solitary lung nodule or a single cavitary nodule[1,5]. We describe here a case of PEH presenting as a 6.0 cm dominant mass along with multiple calcified small nodules in lung. To our knowledge, this type of PEH manifestation has not been reported in the literature before.In 1982, a 20-year-old, non-smoking woman was incidentally found to have an abnormal chest X-ray during a routine medical examination. The X-ray radiograph showed diffusely scattered, high-density small nodular opacities in all the lung fields. Routine laboratory data were within normal limits at the time. She had no significant complaints, past illnesses, or family history. The multiple high-density small nodular opacities were slowly increasing in number and size in the serial follow-up chest radiographs. Twenty years later (May 2002), a follow-up X-ray film showed one approximately 3.0 cm sized, well-defined mass in the middle field of right lung. Because of the absence of symptoms, she had always rejected any medical interventions. In July 2004, she began to cough with sputum. A plain chest radiograph (Figure 1A)and computerized tomograph (CT) (Figure 1B) revealed the mass to be increased to 6.0 cm along with more calcified small nodules (all smaller than 1.0 cm). Physical examination and laboratory findings were still not unremarkable. In September 2004, the patient underwent a lobectomy of the right lower lobe.Macroscopically, the specimen measured 12.0 × 10.0 × 4.0 cm in size and was mostly replaced by a well-circumscribed, unencapsulated mass, up to 6.0 × 5.0 × 4.0 cm. The cut surface of the mass was whitish to brownish in color and solid, but focal cystic
Study on Undergraduates Employment Ideological Education Practice  [PDF]
Lirong Ai
Creative Education (CE) , 2015, DOI: 10.4236/ce.2015.63029
Abstract: The critical solution to the employment of graduates with difficulties in finding a job, which is initially contributed to the stresses and strains of the career guidance in higher vocational colleges, is to solve the problem of ideological and political education the graduates should have. This paper analyzed the data from a survey, taken in a vocational college in Hubei Province in China, on what kinds of problems and why the graduates with difficulties in finding a job might suffer from in their minds. And then the reasonable comments and proper suggestions were presented to solve the problem in higher vocational colleges in China under the guidance of related theories of Chinese and Western ideological and political education.
Source of a floating dust episode over the Qingdao region and dust throughput to the ocean
Anchun Li,Lirong Chen,Pigao Wang
Chinese Science Bulletin , 1998, DOI: 10.1007/BF02885515
Abstract: A floating dust weather happened on March 11–12, 1995 over the Qingdao region. Its source’s and throughput to the ocean were studied. The result indicated that the floating dust was caused by the dust storm that started in northwestern China and developed in northern China. 21 × 106t fine soil particles were carried to the ocean during the episode.

DU Yijing,CHEN Lirong,YAN Zutong,

金属学报 , 1984,
Abstract: To extend the Collins' model of two-dimensional system into binary substitutional system, its Gibbs' function and free energy may be evaluated and then the equation for determination of binary phase equilibrium curve may be obtained. Certain common phase diagrams were investigated, as well as a concrete calculation was made of the "cigar" phase diagram. The obtained results are quite analogous to the behaviour of the three-dimensional ones.
Research on the Dynamic Data-driven Application System Architecture for Flight Delay Prediction
Haiyan Chen,Jiandong Wang,Lirong Feng
Journal of Software , 2012, DOI: 10.4304/jsw.7.2.263-268
Abstract: Flight delay prediction remains an important research topic due to the dynamics of the flight operating process. To solve this problem, a dynamic data-driven approach from the control area has been introduced, in which real-time data was collected and injected into the prediction process to get more accurate and reliable results. In the case of predicting the landing delays of consecutive arrival flights, delay propagation was analyzed to establish the corresponding state space model. Then, dynamic data-driven prediction architecture for flight delay and the prediction steps of on this architecture were presented. Several experiments were carried out on historic flight data to validate the performance of this solution. Results show that the accuracy is high, and not sensitive to the number of the predicted flights. Therefore, the solution has good predictive stability and reliability.
Effect of γ' formation and strengthening elements on microstructures and stress rupture property of single crystal super-alloys
Liu Lirong,Chen Haijun,Jin Tao
China Foundry , 2010,
Abstract: An investigation was carried out to study the effects of γ' formation and strengthening elements (Al, Ti and Ta) on the microstructure and stress rupture properties of nickel base single crystal super-alloys. The results show that with the increase of γ' formation and strengthening elements, the percentage of γ-γ' eutectic and the misfit degree of γ/γ' increases. Detailed microstructural analysis revealed that with the increase of γ' forming element content, the morphology of γ' changed from spherical to cubic, then irregular shape; and the size of γ' increases gradually. Excessive γ' formation and strengthening elements will lead to the precipitation of m phase during stress rupture tests. The alloy with 5wt.%Al, 1wt.%Ti and 6wt.%Ta has the best stress rupture property.
Near-Infrared Spectroscopy Combined with Absorbance Upper Optimization Partial Least Squares Applied to Rapid Analysis of Polysaccharide for Proprietary Chinese Medicine Oral Solution  [PDF]
Jiexiong Su, Xinkai Gao, Lirong Tan, Xianzhao Liu, Yueqing Ye, Yifang Chen, Kaisheng Ma, Tao Pan
American Journal of Analytical Chemistry (AJAC) , 2016, DOI: 10.4236/ajac.2016.73025
Abstract: Near-infrared (NIR) spectroscopy was applied to reagent-free quantitative analysis of polysaccharide of a brand product of proprietary Chinese medicine (PCM) oral solution samples. A novel method, called absorbance upper optimization partial least squares (AUO-PLS), was proposed and successfully applied to the wavelength selection. Based on varied partitioning of the calibration and prediction sample sets, the parameter optimization was performed to achieve stability. On the basis of the AUO-PLS method, the selected upper bound of appropriate absorbance was 1.53 and the corresponding wavebands combination was 400 - 1880 & 2088 - 2346 nm. With the use of random validation samples excluded from the modeling process, the root-mean-square error and correlation coefficient of prediction for polysaccharide were 27.09 mg·L-1 and 0.888, respectively. The results indicate that the NIR prediction values are close to those of the measured values. NIR spectroscopy combined with AUO-PLS method provided a promising tool for quantification of the polysaccharide for PCM oral solution and this technique is rapid and simple when compared with conventional methods.
BICP0 and its RING finger domain act as ubiquitin E3 ligases in vitro
Lirong Diao,Wentao Qiao,Qimin Chen,Chen Wang,Yunqi Geng
Chinese Science Bulletin , 2005, DOI: 10.1360/982004-319
Abstract: Bovine infected-cell protein 0 (BICP0) encoded by bovine herpes virus 1 (BHV-1) immediate early gene is necessary for efficient productive infection, in a large part, because it activates all 3 classes of BHV-1 genes. It also has the ability to efficiently transactivate promoters that are not derived from BHV-1. To investigate the mechanism by which BICP0 achieves these effects, we expressed and purified BICP0 and its different mutants in E. coli. In vitro assays showed that both full-length BICP0 and its isolated RING finger domain induce the accumulation of polyubiquitin chains. Mutations within the RING finger region that abolish the in vitro ubiquitination activity also cause severe reductions in BICP0 activity in other assays. Based on these, we conclude that BICP0 has the potential to act as an E3 ubiquitin ligase during viral infection and its RING finger domain is necessary for this function. These strongly support the hypothesis that BICP0 might influence virus infection through its ability to interact with the ubiquitin-proteasome pathway.
Nd isotope as the tracer of seawater evolution of early Miocene in the eastern Pacific Ocean
Jihua Liu,Lirong Chen,Yingxi Wang,Jianxiu Han
Chinese Science Bulletin , 2003, DOI: 10.1007/BF02900948
Abstract: Fiftysix samples of nannofossil ooze were collected from Core PC5794 in the northern equatorial Pacific at 5 cm intervals. With the methods of mass spectrometer (VG354) and ICP, the Nd isotopic compositions (εNd(t)), Mn contents and Mg/Sr ratios of carbonate phase have been analyzed. CaCO3 contents of bulk sediments were obtained by dissolution of 0.5 mol/L HCl. Based on these data, the high-resolution εNd(t) profile of seawater in early Miocene with core depth(or time) have been established. The values of εNd(t) range from -6.2 to -2.97 and 4 fluctuation cycles existed during 24.06-22.02 Ma. 4 low εNd(t) values (about-6.4) correspond to high CaCO3 contents, which implicates that there were 4 cold epochs or 4 times of Antarctic Bottom Water activity. They occurred at the time of 24.06 Ma, 23.85 Ma, 22.88 Ma and 22.26 Ma, respectively. High εNd(t) values correspond to the high Mn contents and high values of Mg/Sr ratio, which indicates the existence of 4 intense hydrothermal activity periods during 24.06-22 Ma, the durations of them are 4.05-23.98 Ma, 23.69-23.15 Ma, 22.74-22.37 Ma and 22.06-22.02 Ma, respectively.
Effect of the extract from fungus garden of termite on drosophila model of Parkinson's disease
Lirong Yan,Yanhua Chen,Zubin Wang,Mandi Miao
Advanced Studies in Biology , 2012,
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