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Search Results: 1 - 10 of 32670 matches for " Baojun Huang "
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Study on Co-Effect of K2SO4 Deposition and Low Concentration SO2 on Performances of V2O5/AC Catalysts for Low Temperature SCR  [PDF]
Xianlong Zhang, Bowen Shi, Xueping Wu, Zhanggen Huang, Zhenyu Liu, Baojun Yang, Cuiping Zhang
Advances in Chemical Engineering and Science (ACES) , 2011, DOI: 10.4236/aces.2011.14026
Abstract: Simulated compounds were prepared by loading K2SO4 onto V2O5/AC catalysts. Study the effect of K2SO4 on V1/AC catalysts in the presence of low concentration SO2. Transient response techniques, TPD was carried out. The results indicated that the DeNO activity of V1/AC catalysts was decreased seriously in the early period of operation, but the deactivation was gradually diminished with SO2 adsorption and then, it was completely eliminated. For the sulphated catalysts (saturated catalysts by sulphate), their SCR activity were free from existence of gaseous SO2. the loss of activity about 10% caused by K2SO4 was found on them. The deactivation of K2SO4 deposited catalysts was due to the decrease of adsorbed and activated NH3, or some acid sites.
Development of an Analytical Method for Evaluating the Catalytic Active Sites of Titanium Silicalite Zeolite  [PDF]
Xiaoyan Huang, Yan Xue, Xin Gao, Baojun Li, Yiqiang Wen, Xiangyu Wang
Journal of Materials Science and Chemical Engineering (MSCE) , 2015, DOI: 10.4236/msce.2015.36001

A simple, quick, sensitive, accurate and precise method has been developed for evaluating the catalytic active sites of titanium silicalite-1 (TS-1). The catalytic active sites of titanium silicalite zeolite depend on the effectively active species (EAS) in TS-1 which react with specific substrates quickly. However, the EAS was hard to be evaluated with conventional instruments and techniques in the past. In this paper, the EAS was formed in TS-1 upon interaction with H2O2, and its presence could be confirmed by UV-vis spectroscopy which has an absorption peak at 385 nm. The absorbance at 385 nm was found to be linearly related to time, and when the absorbance and the increasing rate of absorbance (k) increased, the catalytic performance of TS-1 enhanced.

A novel insight of sentinel lymph node concept based on 1-3 positive nodes in patients with pT1-2 gastric cancer
Baojun Huang, Zhenning Wang, Zhe Sun, Bo Zhao, Huimian Xu
BMC Cancer , 2011, DOI: 10.1186/1471-2407-11-18
Abstract: A total of 289 patients in pT1-2 stage with 1-3 positive nodes confined to same compartment were included in this study with informed consents. The primary lesion was solitary (≤ 5.0 cm in diameter) and D2 or D3 lymph node dissection had been performed. The location of metastatic lymph nodes was analyzed retrospectively.Most positive nodes occurred in N1 compartment, with frequency of 79.6% to 85.7% based on site of tumor. In the lower third of stomach, no. 6 was the most common metastatic site and no. 3 was the second; the order was reversed for SLM. With increasing depth of tumor invasion, a progressively augmented nodal involvement was shown. Nearly a half appeared transverse metastasis when the tumor located at the lesser or greater curvature. Among skip metastasis, no. 7, 8a, 9 and 11p were the most common metastatic sites and the prognosis was as similar as that of patients with N1 involved only.The 1-3 positive nodes in the same compartment should be possible SNs, and most of which are restricted in N1 in pT1-2 gastric cancer. Transversal and 2 stations lymph node metastasis are common.Although the incidence of gastric cancer is declining, it remains the second leading cause of cancer related mortality worldwide [1-3]. Lymph node status is one of the crucial important prognostic factors, and gastrectomy with D2 or D3 lymphadenectomy is still considered as the only treatment offering hope of a cure for gastric cancer. However, the incidence of nodal involvement in gastric cancer is significantly different according to the depth of tumor invasion (T1-T4) [4-7]. Uniform application of this highly invasive procedure would increase morbidity and reduce the quality of life after surgery, especially for those with early stage cancers. However, the optimal strategy of lymphadenectomy for gastric cancer is still under debate.Sentinel node (SN) is defined as the first lymph node which receives lymphatic drainage from the primary tumor. Sentinel node biopsy (SNB) has be
Expression of thymosin-β4, RACK1 and HMGB in adult amphioxus: implication for the evolutionary conservation of organ related functional molecules
ZHANG Wei,LI Baojun,LI Xinyi,WANG Lifeng,HUANG Xiangwei,HUANG Shuhong,YANG Ling,ZHANG Hongwei
自然科学进展 , 2007,
Abstract: Vertebrate thymosin-β4, RACK1 and HMGB are important molecules functioning in embryonic development and adult life. Here we report the expression patterns of amphioxus thymosin-β4, RACK1 and HMGB genes in tissues of adult amphioxus as revealed by RT-PCR and in situ hybridization. These three genes are all strongly expressed in the central nervous system and ovary, but differently expressed in other tissues including gut, testis, wheel organ, gill and endostyle.
Developmental expression of amphioxus RACK1
XiangWei Huang,Wei Zhang,XinYi Li,XiaoHui Zhang,BaoJun Li,BingYu Mao,HongWei Zhang
Science China Life Sciences , 2007, DOI: 10.1007/s11427-007-0025-1
Abstract: Vertebrate RACK1 plays a key role in embryonic development. This paper described the cloning, phylogenetic analysis and developmental expression of AmphiRACK1, the RACK1 homologous gene in amphioxus. Phylogenetic analysis indicated that amphioxus RACK1 was located at the base of vertebrate clade. AmphiRACK1 expression in lithium-treated embryos was also examined. During embryonic development, AmphiRACK1 was expressed strongly in cerebral vesicles, neural tubes and somites. In lithium-treated embryos, the segmental expression of AmphiRACK1 in somites became blurry and decreased. Its expression in cerebral vesicles and neural tubes was also weaker or disappeared. In the adult animal, AmphiRACK1 transcripts were detected in the epithelium of midgut diverticulus and gut, wheel organ, gill blood vessels and testis.
Groups in which some primary subgroups are weakly s-supplemented?
Baojun LI
Mathematics , 2013,
Abstract: A subgroup $H$ of a group $G$ is called weakly s-supplemented in $G$ if there is a subgroup $T$ such that $G=HT$ and $H\cap T\le H_{sG}$, where $H_{sG}$ is the subgroup of $H$ generated by all those subgroups of $H$ which are s-permutable in $G$. The influence of primary weakly s-supplemented subgroups on the structure of finite groups is investigated. An open question promoted by Skiba is studied and some known results are generalized.
Physiological Regulation of Valve-Opening Degree Enables Mussels Mytilus edulis to Overcome Starvation Periods by Reducing the Oxygen Uptake  [PDF]
Baojun Tang, Hans Ulrik Riisg?rd
Open Journal of Marine Science (OJMS) , 2016, DOI: 10.4236/ojms.2016.63029
Abstract: During periods of starvation, the blue mussel Mytilus edulis reduces its valve gape and thus the filtration rate whereby the oxygen uptake becomes reduced. Considering the frequency with which M. edulis in the field experience shorter or longer periods with low phytoplankton concentrations it is of great importance to understand the bioenergetic implications the valve opening-closing mechanism. Here, we tested the hypothesis that M. edulis during starvation regulates the opening degree of its valves in such a way that the oxygen concentration in the mantle cavity is reduced in order to minimize the respiration and at the same time prevent anaerobic metabolism which is energetically expensive. This was experimentally done by measuring the oxygen-concentration changes in the mantle cavity of both starved and fed mussels using a fibre-optic oxygen meter with a small sensor inserted into the mantle cavity through a hole drilled in the valve. It was observed that when there were no algal cells in the ambient water, the mussels gradually closed their valves resulting in a decline of the filtration rate along with a simultaneous decrease in the oxygen concentration in the mantle cavity and subsequently a remarkable decrease in the respiration rate. Typically, a starved M. edulisclosed its valves for a certain period of time followed by a short period when it re-opened and this resulted in an alternating fall and rise of the oxygen concentration in the mantle cavity. Therefore, the low oxygen consumption rate of M. edulis in phytoplankton depleted water can be interpreted as an efficient physiologically regulated mechanism that allows the mussel to save energy during a starvation period.

ZHANG Baojun,HUANG Suiyang,CANG Fengbo,CHANG Jingyi,

材料研究学报 , 1990,
Abstract: Vacuum evaporating device which was designed by us is used to grow dia-mond films on the substrate of silicon single crystals from a mixture of CH_4 and H_2 gasesat lower pressure by hot-filament CVD method.The results of X-ray diffraction,Ramanspectrum and SEM analysis show that the films present polycrystalline diamond strueture,the process of the films growth is stable and the repeatability of results is excellent.Mecha-nism of growth of diamond films are also investigated.
Chaotic system for the detection of periodic signals under the background of strong noise
Yue Li,Baojun Yang
Chinese Science Bulletin , 2003, DOI: 10.1007/BF03183261
Abstract: We propose a method to study the chaotic system for the detection of periodic signals in the presence of strong background noise. The numerical experiments indicate that the chaotic system constructed from the modified Duffing-Holmes equation is sensitive to the weak periodic signal mixed with noise, and it has certain immunity to noise. The signal to noise ratio for the system can reach to about-91 dB.

Lin Baojun,

金属学报 , 1982,
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