Publications by authors named "Mei-jin Yuan"

Objective: To explore the establishment of an objective, standardised and operable comprehensive evaluation and assessment system for clinical nurses based on the support of an information technology platform and to realise the assessment management of tier nurses before and after promotion.

Methods: By reviewing the literature and combining the findings with the actual situation of nursing work in hospitals, the clinical nurse comprehensive evaluation assessment criteria were designed and assessed for nurses at different levels in terms of their medical ethics, attendance, performance, theoretical study, professional skills and teaching and then supported by the information technology platform to achieve timely and quick assessment.

Results: In 2021, 999 nurses out of the 1037 clinical nurses in our institution completed the assessment.

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The Autographa californica multiple nucleopolyhedrovirus (AcMNPV) ac78 gene is one of the baculovirus core genes. Recent studies showed that ac78 is essential for budded virion (BV) production and the embedding of occlusion-derived virion (ODV) into occlusion body during the AcMNPV life cycle. Here, we report that an ac78-knockout AcMNPV (vAc78KO) constructed in this study had different phenotypes than those described in the previous studies.

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Persistent baculovirus infection is observed frequently in insect populations. Persistent infection can be transformed to a replicative and infective state caused by stress factors and plays an important role in regulating the size of insect population and in epizoology of baculoviruses. The aim of this study is to establish a persistently baculovirus-infected cell system to explore the molecular mechanisms of baculoviral persistence.

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p19 gene, cry11Aa gene and p20 gene from Bacillus thuringienesis subsp. israelensis are organized as a single operon. It is reported that P20 polypeptide is not required for high-level expression of Cry11Aa and crystal formation in B.

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Insecticidal crystal proteins (ICPs) produced in Bacillus thuringiensis accumulate as crystalline inclusions that represent up to 30% of total dry weight the cell produces. The mechanisms of in vivo crystallization of these insecticidal proteins remain interests, yet unclear. A 20-kDa protein (P20), the product of the third open reading frame of cry11A operon in B.

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The Cry1Ab differs most significantly from the other related ICPs by its absence of a carboxyl terminus of 28 amino acids including four cysteines; consequently it is less stable. We report that the helper protein P20 plays a role in the expression and crystallization of Cry1Ab. Three Cry1Ab expression plasmids pT1B, pP1B, and pDP1B, were constructed based on the shuttle vector pHT3101.

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Vip3A, a novel insecticidal protein, is secreted by Bacillus thuringiensis (Bt) during vegetative growth. Vip3A protein possesses insecticidal activity against a wild spectrum of lepidopteran insect larvae. Since the first cloning of vip3A gene from Bt, many other vip3A genes have been isolated.

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