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REMARKS ON FIXED POINT THEOREMS
Jiang, Guo-Jing,Kang, Shin-Min The Youngnam Mathematical Society Korea 2000 East Asian mathematical journal Vol.16 No.2
In this paper we show fixed point theorems related with the diameter of orbit on metric spaces. The results presented in this paper extend, improve and unify the results of $Heged\"{u}s$ [1], Kim, Kim, Leem and Ume [2], Kim and Leem [3], Ohta and Nikaido [4] and $Taskovi\'{c}$ [5].
SOME FIXED POINT THEOREMS FOR CONTRACTIVE AND EXPANSIVE MAPS
Jiang, Guo-Jing,Kang, Shin-Min Korean Mathematical Society 2002 대한수학회논문집 Vol.17 No.3
In this paper, axed point theorems for contractive and expansive maps are established, some of which extend a few results of Das and Debata, Edelstein, Fisher, Leader, Shih and Yeh, and Jungck.
Anti-toxoplasmosis Effects of Oleuropein Isolated from <i>Fraxinus rhychophylla</i>
Jiang, Jing-Hua,Jin, Chun-Mei,Kim, Youn-Chul,Kim, Hun-Soo,Park, Won-Cheol,Park, Hyun Pharmaceutical Society of Japan 2008 Biological & pharmaceutical bulletin Vol.31 No.12
<P>Toxoplasmosis is a parasitic disease caused by <I>Toxoplasma gondii</I>, with very few therapeutic treatment options. Typically, the choices for treatment are pyrimethamine and sulfadiazine, however their utility is limited because of drug toxicity and serious side effects. For these reasons, new drugs with lower toxicity are urgently needed. In this study, the compound oleuropein isolated from <I>Fraxinus rhynchophylla</I> showed anti-<I>T. gondii</I> effects <I>in vitro</I> and <I>in vivo</I>. In Madin–Darby bovine kidney cells, the selectivity of oleuropein was 8.9, which was higher than sulfadiazine and pyrimethamine (3.8 and 2.5, respectively). In infected mice, the inhibition ratio of <I>T. gondii</I> in the peritoneal cavity was 55.4% compared to the negative control group after treatment with 300 mg/kg oleuropein. In addition, inhibitory effects on granuloma, apoptosis, necrosis and cyst-formation were shown in sections of spleen and liver. Oleuropein is therefore a potentially useful anti-<I>T. gondii</I> candidate for clinical application.</P>
Jiang Wan-Zhu,Yao Fang-Jie,Lu Li-Xin,Fang Ming,Wang Peng,Zhang You-Min,Meng Jing-Jing,Lu Jia,Ma Xiao-Xu,He Qi,Shao Kai-Sheng 한국미생물학회 2021 The journal of microbiology Vol.59 No.1
Gloeostereum incarnatum is an edible medicinal mushroom widely grown in China. Using the whole genome of G. incarnatum, simple sequence repeat (SSR) markers were developed and synthetic primers were designed to construct its first genetic linkage map. The 1,048.6 cm map is composed of 10 linkage groups and contains 183 SSR markers. In total, 112 genome assembly sequences were anchored, representing 16.43 Mb and covering 46.41% of the genome. Selfing populations were used for quantitative trait loci (QTL) targeting, and the composite interval mapping method was used to co-localize the mycelium growth rate (potato dextrose agar and sawdust), growth period, yield and fruiting body length, and width and thickness. The 14 QTLs of agronomic traits had LOD values of 3.20–6.51 and contribution rates of 2.22– 13.18%. No linkage relationship was found between the mycelium growth rate and the growth period, but a linkage relationship was observed among the length, width and thickness of the fruiting bodies. Using NCBI’s BLAST alignment, the genomic sequences corresponding to the QTL regions were compared, and a TPR-like protein candidate gene was selected. Using whole-genome data, 138 candidate genes were found in four sequence fragments of two SSR markers located in the same scaffold. The genetic map and QTLs established in this study will aid in developing selective markers for agronomic traits and identifying corresponding genes, thereby providing a scientific basis for the further gene mapping of quantitative traits and the marker-assisted selection of functional genes in G. incarnatum breeding programs.
Antimalarial Effects of Areca catechu L.
Jiang, Jing-Hua,Jung, Suk-Yul,Kim, Youn-Chul,Shin, Sae-Ron,Yu, Seung-Taek,Park, Hyun The Physiological Society of Korean Medicine and T 2009 동의생리병리학회지 Vol.23 No.2
The emergence and spread of drug-resistant malaria parasites is a serious public health problem in the tropical world. Useful antimalarial drugs such as chloroquine have resistance in the world now. Moreover, other antimalarialdrugs such as mefloquine, halofantrine, atovaquone, proguanil, artemether and lumefantrine retain efficacy but have limitations, one of which is their high cost. New antimalarial drugs are clearly needed now. Cytotoxicity assay and susceptibility assay were performed for the selectivity of herb extracts in vitro. On the basis of high selectivity, 4-day suppressive test and survival test were progressed in Plasmodium berghei-infected mice. The selectivity of Areca catechu L. (ACL) and butanol extract of ACL (ACL-BuOH extract) were 3.4 and 3.0 in vitro, respectively. Moreover in vivo, 4-day suppressive test showed 39.1 % inhibition effect after treated with 150 mg/kg/day ACL-BuOH to P. berghei-infected mice. Survival test also showed 60% survival rate with ACL-BuOH-treated group while all other group mice died. In this study, ACL and ACL-BuOH were investigated for antimalarial activity in vitro and in vivo and they showed a potent antimalarial activity. In particular,ACL-BuOH could specifically lead higher survival rate of mice in vivo. Therefore ACL-BuOH would be a candidate of antimalarial drugs.
Jing Shen,Jilin Zhang,Jian Wan,Li Zhou,Ming Jiang 보안공학연구지원센터 2014 International Journal of Database Theory and Appli Vol.7 No.6
Stencils are finite-difference algorithms for solving large-scale and high-dimension partial differential equations. Due to the data dependences among the iterative statements in Stencils, traditional Stencil computations are be executed serially, rather than in parallel. It’s challenging to design an effective and scalable Stencil parallelized method. To address the issue of 3D data space computing, we present a serial execution model based on multi-layers symmetric Stencil method and time skewing techniques. Within this model, the iteration space is divided to multiple tiles based on time skewing, where the executive process is ordered by the sequence of tiles, and the nodes in each individual tile can be swept repeatedly to improve the data locality. In addition, we propose a novel 3D iterative space alternate tiling Stencil parallel method, which subdivides the iteration space along high dimension, and changes the execution sequence of tiles to reduce the data dependency and communication cost, where the partial order of tiles is still guaranteed. Experimental results demonstrate our proposed alternative tiling parallel method achieves better parallel efficiency and scalability compared with the domain-decomposition methods.
Jiang, Guo-Jing,Kim, Jong-Kyu 한국전산응용수학회 2001 The Korean journal of computational & applied math Vol.8 No.3
In this paper we obtain the necessary and sufficient conditions for convergence concerning the Mann iterative sequences with errors for the class of continuous accretive operators in smooth Banach spaces. AMS Mathematics Subject Classification : 47H05, 47H06, 47H14
Does HBV Infection Increase Risk of Endometrial Carcinoma?
Jiang, Xue-Feng,Tang, Qiong-Lan,Zou, Yuan,Xu, Ling,Zeng, Hua,Chi, Cong,Jiang, Jing-Ru,Zhang, Bin-Zhong Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.2
Objective: Connections between chronic inflammation and tumor development and progression are now generally accepted. Recent evidence indicates that hepatitis B is associated with several types of cancer, but whether endometrial carcinoma (EC) is included has not been reported. Methods: We analyzed HBV serum marker status in 398 patients with endometrial cancer, comparing them to 788 control women undergoing health examination. Results: The total prevalence of HBsAg tested positive in cancer group was significantly higher than the control group (12.8% vs 6.0%, P=0.001), while positive HBsAb was significantly lower (41.2% vs 68.5%, P=0.001). Hepatitis B carriers in endometrial cancer group were also more frequent than in the control group (9.3% vs 5.5%, P=0.013). Interestingly, in the endometrial cancer group, 147 cases were HBV serum marker negative, which was also higher than in the control group (36.9% vs 15.6%, P=0.001). Conclusion: There may be a correlation between HBV infection and endometrial carcinoma.