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Search Results: 1 - 10 of 104310 matches for " Zhang Baojun "
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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.
Data processing techniques for a wireless data transmission application via mud
Zhao Qingjie,Zhang Baojun,Wang Wei
EURASIP Journal on Advances in Signal Processing , 2011,
Abstract: The data measured by well bottom sensors can be transmitted to the surface through the drilling mud during oil drilling operations. This article introduces a data processing scheme for a wireless data transmission application via mud. The detailed signal processing procedure is given, and several data processing techniques used are discussed, mainly including data encoding and signal integrating method, signal filtering, data storage and manage method, peak detection, signal recognition, and data decoding method. The article uses M pulses in N slots to encode the values of actual parameters. A two step filtering method and a dynamic data storing and managing method are proposed. A mix peak detection method is utilized to find the position of a pulse by combining threshold method and neighbor comparison method. These techniques have been successfully used in an oil well drilling operation.
Tracking Proliferative History in Lymphocyte Development with Cre-Mediated Sister Chromatid Recombination
Baojun Zhang,Meifang Dai,Qi-Jing Li ,Yuan Zhuang
PLOS Genetics , 2013, DOI: 10.1371/journal.pgen.1003887
Abstract: Tracking and isolating live cells based on their proliferative history in live animals remains a technical challenge in animal studies. We have designed a genetic marking system for tracking the proliferative frequency and history of lymphocytes during their development and homeostatic maintenance. This system is based on activation of a fluorescent marker after Cre-dependent recombination between sister chromatids at a specially designed tandem loxP site, named Tlox. We have demonstrated the utility of the Tlox system in tracking proliferative windows of B and T lymphocyte development. We have further applied the Tlox system in the analysis of the proliferative behavior and homeostatic maintenance of Vγ1.1 positive γδ T cells. Our data show that Vγ1.1 T cells generated in neonatal but not adult life are able to expand in the thymus. The expanded Vγ1.1 T cells are preferentially maintained in the liver but not in lymphoid organs. It has been shown that numbers of Vγ1.1 T cells were dramatically increased in the lymphoid organs of Id3 deficient mice. By combining BrdU and Tlox assays we show that this phenotype is primarily due to enhanced neonatal expansion and subsequent retention of Vγ1.1 T cells. Thus, the Tlox system provides a new genetic tool to track clonal expansion within a defined cell population or tissue type in live animals.
Impacts of suppressing guide on information spreading
Jinghong Xu,Lin Zhang,Baojun Ma,Ye Wu
Computer Science , 2015, DOI: 10.1016/j.physa.2015.10.059
Abstract: It is quite common that guides are introduced to suppress the information spreading in modern society for different purposes. In this paper, an agent-based model is established to quantitatively analyze the impacts of suppressing guides on information spreading. We find that the spreading threshold depends on the attractiveness of the information and the topology of the social network with no suppressing guides at all. Usually, one would expect that the existence of suppressing guides in the spreading procedure may result in less diffusion of information within the overall network. However, we find that sometimes the opposite is true: the manipulating nodes of suppressing guides may lead to more extensive information spreading when there are audiences with the reversal mind. These results can provide valuable theoretical references to public opinion guidance on various information, e.g., rumor or news spreading.
有限区域湿有效能量的层结、斜压、正压分量及其收支方程
章国材 Zhang Guocai,吴宝俊 Wu Baojun
大气科学 , 1985, DOI: 10.3878/j.issn.1006-9895.1985.04.10
Abstract: 本文探讨了将湿有效能量分解成层结、斜压、正压分量的方法,并讨论了它们的收支方程式.其中层结分量与实际大气中对流不稳定有较好的对应关系,但在干有效位能中分解不出这一项.在斜压、正压分量的收支方程中,除附加项外都与干有效位能的方程类似.由三个分量的收支方程看出,湿有效能量向动能的转换只可能发生在层结不稳定或(与)有斜压存在的大气中.这与天气分析经验以及经典的马古列斯(M.Margules)模式是一致的.
联合卫星重力、卫星测高和海洋资料研究全球海平面变化
Global Sea Level Variations Estimated from Satellite Altimetry, GRACE and Oceanographic Data

张保军, 王泽民
ZHANG Baojun
, WANG Zemin

- , 2015, DOI: 10.13203/j.whugis20150230
Abstract:
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.
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.
Association of IL-1beta gene polymorphism with cachexia from locally advanced gastric cancer
Dianliang Zhang, Hongmei Zheng, Yanbing Zhou, Xingming Tang, Baojun Yu, Jieshou Li
BMC Cancer , 2007, DOI: 10.1186/1471-2407-7-45
Abstract: The study included 214 patients and 230 healthy volunteers. Genomic DNA was prepared from peripheral blood leukocytes. Genotypes and allele frequencies were determined in patients and healthy controls using restriction fragment length polymorphism analysis of polymerase chain reaction products.The overall frequencies of IL-1B-31 T, -511 T, +3954 T and IL-1RN VNTR alleles in patients with locally advanced gastric cancer were all comparable with those in controls. No significant differences were found in the distribution of IL-1B-31 T, -511 T and IL-1RN VNTR between patients with cachexia and without. Patients with cachexia showed a significantly higher prevalence of IL-1B+3954 T allele than those without (P = 0.018). In a logistic regression analysis adjusted for actual weight, carcinoma location and stage, the IL-1B+3954 CT genotype was associated with an odds ratio of 2.512 (95% CI, 1.180 – 5.347) for cachexia.The IL-1B+3954 T allele is a major risk for cachexia from locally gastric cancer. Genetic factors studied are not likely to play an important role in the determination of susceptibility to locally advanced gastric cancer.Cancer cachexia is a syndrome characterized by a marked weight loss, anorexia, asthenia and anaemia, accounting for at least 20% of deaths in neoplastic patients [1]. Unlike starvation, which depletes fat stores form adipose tissue while conserving protein from the wasting of skeletal muscle, in cachexia neither fat nor protein is spared. Progressive weight loss is a common feature of cancer and is responsible not only for a poor quality of life and poor response to chemotherapy, but also short survival time irrespective of tumor mass or the presence of metastases, and it also interferes with cancer therapy [2]. Although the mechanism of cancer cachexia remains largely unresolved, several key mediators have been identified. One set is proinflammatory cytokines [3], including TNF-α, IL-1β, IL-6 and IFN-γ [4,5]. In humans, there is increasing e
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