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( Zhi-ke Liu ),( Qiu-yu Zhang ),( Ning-ning Yang ),( Ming-guo Xu ),( Jin-feng Xu ),( Ming-long Jing ),( Wen-xing Wu ),( Ya-dong Lu ),( Feng Shi ),( Chuang-fu Chen ) 한국미생물생명공학회(구 한국산업미생물학회) 2019 Journal of microbiology and biotechnology Vol.29 No.3
Salmonellosis is a highly contagious bacterial disease that threatens both human and poultry health. Tests that can detect Salmonella in the field are urgently required to facilitate disease control and for epidemiological investigations. Here, we combined loop-mediated isothermal amplification (LAMP) with a chromatographic lateral flow dipstick (LFD) to rapidly and accurately detect Salmonella. LAMP primers were designed to target the Salmonella invA gene. LAMP conditions were optimized by adjusting the ratio of inner to outer primers, MgSO<sub>4</sub> concentration, dNTP mix concentration, amplification temperature, and amplification time. We evaluated the specificity of our novel LAMP-LFD method using six Salmonella species and six related non-Salmonella strains. All six of the Salmonella strains, but none of the non-Salmonella strains, were amplified. LAMP-LFD was sensitive enough to detect concentrations of Salmonella enterica subsp. enterica serovar Pullorum genomic DNA as low as 89 fg/μl, which is 1,000 times more sensitive than conventional PCR. When artificially contaminated feed samples were analyzed, LAMP-LFD was also more sensitive than PCR. Finally, LAMP-LFD gave no false positives across 350 chicken anal swabs. Therefore, our novel LAMP-LFD assay was highly sensitive, specific, convenient, and fast, making it a valuable tool for the early diagnosis and monitoring of Salmonella infection in chickens.
On the die face design for stamping an automotive engine hood
Ming-Zhi Chen,Fuh-Kuo Chen,Shi-Wei Wang,Ching-I Lin 한국소성가공학회 2010 기타자료 Vol.2010 No.6
The die face design for stamping an engine hood was examined in the present study using both the finite element analysis and the experimental approach. Since the engine hood is mainly manufactured in the drawing operation, the die addendum design is the key to the success of manufacturing a defect free product. In order to analyze the addendum design, the existing die addendum designs corresponding to those engine hoods were reviewed first and the design parameters were established. The preliminary study was then performed to determine favorable operation conditions including the suitable stamping die angle, blank-holder surface shape, and die open line. The optimum design for the die addendum face was then investigated with the use of finite element simulations. The effects of the design parameters constructed in the present study on the occurrence of the defects were examined and a systematic design guideline was proposed. In order to validate the proposed die design, the actual stamping tooling was manufactured according to the finite element analysis and the engine hoods were produced. The part shape, thickness distribution, and the stretch at the central region of the production part were compared with those obtained from the finite element simulations. The consistent agreement between the product parts and the simulation results confirms the validity of the design guide proposed in the present study for stamping an engine hood.
Cement Embolus Trapped in the Inferior Vena Cava Filter during Percutaneous Vertebroplasty
Zhi Li,Rui-fang Ni,Xin Zhao,Chao Yang,Ming-ming Li 대한영상의학회 2013 Korean Journal of Radiology Vol.14 No.3
A 58-year-old female patient, diagnosed with adenocarcinoma of the lung, underwent percutaneous vertebroplasty at the L4 vertebral body due to painful spinal metastases. Because of deep venous thrombosis of the left femoral and iliac veins, an inferior vena cava filter had been placed before vertebroplasty. Bone cement migrated into the venous bloodstream and then was being trapped within the previously placed filter. This case illustrates that caval filter could capture the bone cement and prevent it from migrating to the pulmonary circulation.
Zhi-Bin Hu,He-An Luo,Xiao-Guang Wang,Ming-Zhi Huang,Lu Huang,Huai-Lin Pang,Chun-Hui Mao,Hui Pei,Chao-Qun Huang,Jiong Sun,Ping-Le Liu,Ai-Ping Liu 대한화학회 2014 Bulletin of the Korean Chemical Society Vol.35 No.4
In attempt to lead compounds exhibiting both insecticidal and fungicidal activities, a series of O-benzyl oximeether derivatives were designed and synthesized by introducing β-methoxyacrylate pharmacophore into a scaffold. The insecticidal activity against Aphis fabae and the fungicidal activity against Erysiphe graminis were screened. The title compounds exhibited remarkable insecticidal and fungicidal activities. The most potent compound 6d was identified. Its insecticidal LC50 against A. fabae is 6.4 mg/L, which is lower than that of chlorfenapyr (19.4 mg/L) and even close to the level of imidacloprid (4.8 mg/L). Its fungicidal EC90 in preventive and curative treatment against E. graminis are 2.2 and 4.8 mg/L, respectively, which are lower than azoxystrobin (7.0 and 5.9 mg/L). These results indicate that compound 6d can be considered as a lead for further developing new O-benzyl oxime-ether typed candidates with both fungicidal and insecticidal activities.
Zhi, Ai-Min,Feng, Ding-Yuan,Zhou, Xiang-Yan,Zou, Shi-Geng,Huang, Zhi-Yi,Zuo, Jian-Jun,Ye, Hui,Zhang, Chang-Ming,Dong, Ze-Min,Liu, Zhun Asian Australasian Association of Animal Productio 2008 Animal Bioscience Vol.21 No.8
Cationic amino acid transporter $b^{0,+}AT$ (HGMW-approved gene symbol SLC7A9, solute carrier family 7, member 9) plays a crucial role in amino acid nutrition. In the present study, we describe the cloning and sequencing of porcine $b^{0,+}AT$. Based on the sequence of porcine $b^{0,+}AT$ deposited in the NCBI (National Center for Biotechnological Information), we identified a putative porcine homologue. Using rapid amplification of cDNA ends (RACE), the full-length cDNA encoding porcine $b^{0,+}AT$ was isolated. The porcine $b^{0,+}AT$ cDNA was 1,680 bp long, encoding a 487 amino acid trans-membrane protein. The predicted amino acid sequence was found to have 88.9% and 87.1% identity with human and mouse $b^{0,+}AT$, respectively. Real-time RT-PCR indicated porcine $b^{0,+}AT$ transcripts expressed in heart, kidney, muscle and small intestine. The small intestine had the highest $b^{0,+}AT$ mRNA abundance while the muscle had the lowest (p<0.05). Along the longitudinal axis, the ileum had the highest $b^{0,+}AT$ mRNA abundance while the colon had the lowest (p<0.05). The $b^{0,+}AT$ mRNA level was highest on day 7 and 90 in the duodenum (p<0.05). It increased from day 1 to day 26 in the jejunum (p>0.05) and had the highest abundance on day 60 (p<0.05). There was, however, no difference between day 1, 7, 26, 30, 90 and 150 (p>0.05). The strongest $b^{0,+}AT$ expression appeared on day 7 in the ileum before weaning, and then decreased till day 30 but rose gradually again from day 60 to 150 (p<0.05).
Zhi-Fu Guo,Li-Jun Zhang,Ming Zhong,Yu-Ming Wei,Li Zhang,Hui Ma,Hao-Ge Li,Li-Jing Chen,Jing-Wei Lin,You-Liang Zheng 한국유전학회 2010 Genes & Genomics Vol.32 No.3
By acid polyacrylamide gel electrophoresis (A-PAGE) analysis,it was indicated that the electrophoresis mobility of gliadins from Crithopsis delileana (Schult) Roshev (2n=2x=14,KK) had obvious difference with those from common wheat in α, γ and ω region. Using homologous primers, two γ-gliadin genes (gli-Kr1 and gli-Kr2) were isolated from C. delileana,which had been deposited in the GenBank under accession numbers EU283818 and EU283821, respectively. Two γ-gliadin genes of C. delileana had the similar primary structures to the corresponding gene sequences from other wheat related species. The differences were mainly resulted from substitutions,insertions and deletions involving single amino acid residues or motifs of γ-gliadins. The repetitive domains of gli-Kr1 and gli-Kr2 from C. delileana are shorter than most of other sequences. By the alignment of γ-gliadin genes from A, B, D, Am, Au, S, Sl, Ssh, Ss and Sb genomes of Triticum and Aegilops, R genome of Secale (γ-secalin), Ee genome of Lophopyrum and K genome of Crithopsis in Triticeae, phylogenetic analysis indicated that two γ-gliadin genes of C. delileana could be clustered together with a γ-gliadin genefrom Ssh genome of Aegilops by an interior paralleled branch. It was the first time that the γ-gliadin genes encoded by K genome of C. delileana were characterized. These could offer precious information for better understanding the qualities associated with gliadins, the response in coeliac disease and studying the evolutionary relationship of gliadins in Triticeae.
Ghost Cell Odontogenic Carcinoma Arising from Calcifying Cystic Odontogenic Tumor: A Case Report
Zhi-Yu Zhu,Yu Chen,Zhi-Gang Chu,Wei-Ping Zhang,Di Lv,Ning Geng,Ming-Zhong Yang 대한병리학회 2012 Journal of Pathology and Translational Medicine Vol.46 No.5
Ghost cell odontogenic carcinoma (GCOC) is an exceptionally rare and malignant odontogenic tumor with aggressive growth characteristics. We describe a case of GCOC which was considerably derived from a previously resected calcifying cystic odontogenic tumor (CCOT). Cellular atypia, mitotic activity, Ki-67 labeling index and matrix metalloprotease-9 positive expression rate were all increased in the currently resected specimen compared to the initial one. This is a rare case of malignant transformation of CCOT to GCOC with respect to its histopathological and immunohistochemical findings.
Empirical Bayesian Markov Chain Model for Random Model Change
Zhi-Ming Luo,김태윤,김범준 계명대학교 자연과학연구소 2014 Quantitative Bio-Science Vol.33 No.1
In this short paper we consider long term binary prediction of stock market by using empirical Bayesian Markov chain model. Our empirical Bayesian MC model is designed to accommodate random change of MC over time. Surprisingly enough, it is shown that empirical Bayesian MC model is homogeneous and has limiting distribution though it accommodates random model change over time. Empirical works are given to illustrate usefulness of our results.