Prevention of Natural Flowering in Pineapple (Ananas comosus) by Shading and Urea Application

Meng-Tzu Lin,Alfred Ming Chen1,Tzong-Shyan Lin,Ching-San Kuan,Ching-Lung Lee,Wen-Ju Yang 한국원예학회 2015 Horticulture, Environment, and Biotechnology Vol.56 No.1

The year-round production of pineapple (Ananas comosus var. comosus) is often interrupted by natural flowering during winter in Taiwan. A stable and promising technique for preventing natural flowering is required. In this study, we have tested the effect of shading and urea application on the flowering of pineapple. Shading 90% of sun light(s) before mid-November delayed the natural flowering of pineapple and the delay was affected by the plant age. For pineapples planted less than 11 month before mid-November, applying 1% urea plus shading treatment (SN) completely inhibited natural flowering. All the flowering-inhibited plants could be forced to flower by applying calcium carbide. Long-term shading might result in a decreased number of fruitlets within a fruit. However, 6 weeks of recovery before forcing flowering was sufficient for plants to produce fruits with quality equal to that of the control plants. In winter, pineapple plants that were prone to flowering tended to accumulate more leaf starch and increase their C/N ratio. The SN treatment increased the leaf nitrogen concentration and thus effectively maintained a low leaf C/N ratio. Furthermore, flowering-inhibited plants exhibited a constantly low level of leaf starch during the winter and their flowering forced by calcium carbide did not accompany with leaf starch accumulation.

The back contact modification in high-efficiency Cu₂ZnSn(S,Se)₄ solar cells by a thin MoO₃ layer

Septia KHOLIMATUSSADIAH,Cheng-Ying CHEN,Wei-Chao CHEN,Yi-Rung LIN,Shao-Hung LU,Meng-Chia HSIEH,Jan-Kai CHANG,Chih-I WU,Ruei-San CHEN,Kuei-Hsien CHEN,Li-Chyong CHEN 한국진공학회 2016 한국진공학회 학술발표회초록집 Vol.2016 No.8

Preparation and Characterization of Electrospun Polyimide Microfibrous Mats with High Whiteness and High Thermal Stability from Organo-soluble Polyimides Containing Rigid-rod Moieties

Chen-yu Guo,Jin-gang Liu,Lu-meng Yin,Meng-ge Huangfu,Yan Zhang,Xiao Wu,Xiu-min Zhang 한국섬유공학회 2018 Fibers and polymers Vol.19 No.8

A series of flexible and tough polyimide (PI) microfibrous mats (PI-1~PI-4) have been prepared via the one-step electrospinning procedure with the organo-soluble PI resins as the starting materials. For this purpose, four PI resins were first synthesized by the chemical imidization reaction from 2,2'-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA) and four aromatic diamines containing rigid-rod moieties in their molecular skeletons, respectively. The PI resins derived from 6FDA and aromatic diamines, including PI-1 from 2-(4-aminophenyl)-5-aminobenzimidazole (APBI), PI-2 from 2-(4-aminophenyl)-5-aminobenzoxazole (APBO), PI-3 from 4,4′-diaminobenzanilide (DABA), and PI-4 from 2- chloro-4,4-diaminobenzanilide (Cl-DABA) exhibited good solubility in polar aprotic solvents, such as N-methyl-2- pyrrolidone (NMP) and N,N-dimethylacetamide (DMAc). Flexible and tough microfibrous mats were successfully prepared by a one-step electrospinning procedure from the PI/DMAc solution (solid content: 15-20 wt%; absolute viscosity: 8000- 10000 mPa·s). The derived PI mats exhibited good whiteness according to the CIE Lab measurements with W (whiteness) values as high as 94.31, L (lightness) values higher than 94.00, b* (yellowness) values as low as 2.98 and yellow indices (YI) as low as 4.87. In addition, the prepared PI mats exhibited excellent thermal and dimensional stability with the glass transition temperatures (Tg) higher than 345 oC and linear coefficients of thermal expansion (CTE) as low as 27.8×10-6 /K.

Comparative Analysis on Antioxidative Ability of Muscle between Laiwu Pig and Large White

Chen, Wei,Zhu, Hong-Lei,Shi, Yuan,Zhao, Meng-Meng,Wang, Hui,Zeng, Yong-Qing Asian Australasian Association of Animal Productio 2012 Animal Bioscience Vol.25 No.8

This study was conducted to evaluate effects of storage temperatures ($4^{\circ}C$ and $20^{\circ}C$) and pig breeds (Laiwu pig and Large White pig) on the main antioxidative enzymes (superoxide dismutase, catalase, and glutathione peroxidase) activity and lipid oxidation in porcine Longissimus dorsi muscle. Activities of antioxidative enzymes (AOE) decreased slightly during storage, regardless of storage temperatures. Muscle antioxidative enzymes activities stored at $4^{\circ}C$ were higher than that stored at $20^{\circ}C$. Laiwu pig's enzymes activities were significantly (p<0.01) higher than Large White's. The level of malondialdehyde is a direct expression of the grade of lipid oxidation in meat. In our study, the malondialdehyde contents increased after 6 days storage. However, malondialdehyde contents of Laiwu pig were significantly (p<0.01) lower than Large White's. A lower content of malondialdehyde corresponds to a lower oxidation of lipids. These results indicated the muscle antioxidative ability of Laiwu pig was higher than Large White pig. It also implied that antioxidative enzymes were involved in the essentials and deciding mechanisms of meat quality by quenching oxygen free radicals and inhibiting lipid oxidation in muscle.

Elucidating Time for Inflorescence Initiation in Mango by Girdling and Leaf Removal

Meng-Sung Chen,Tzong-Shyan Lin 한국원예학회 2006 한국원예학회 기타간행물 Vol.- No.-

Structural and functional properties of Maillard-reacted casein phosphopeptides with different carbohydrates

Meng Yuan,Yu Cao,Haoyang Zheng,Kunlin Chen,Yuping Lu,Jing Wang,Liqin Zhu,Ming Chen,Zhipeng Cai,Yonggen Shen 한국식품과학회 2024 Food Science and Biotechnology Vol.33 No.7

This study used glucose, fructose, maltose and dextran to explore the effects of different carbohydrates on the Maillard reaction of casein phosphopeptides (CPP). The color parameter results showed that heating time from 1 to 5 h led to brown color, which was consistent with the observed increased in browning intensity. Fourier transform infrared spectroscopy results verified that four carbohydrates reacted with CPP to produce Maillard conjugates. Fluorescence spectroscopy showed that the Maillard reaction changed the tertiary structure of CPP by decreasing the intrinsic fluorescence intensity and surface hydrophobicity compared with the CPP-carbohydrate mixture. At the same time, the Maillard reaction effectively improved the emulsifying properties, reducing power and DPPH radical scavenging activity of CPP. Furthermore, this study also found that glucose and fructose improved CPP more than maltose and dextran. Therefore, monosaccharides have good potential in modifying CPP via the Maillard reaction.

Perspectives of Children, Parents and Teachers on School Readiness and School Transitions in Mainland China: A Narrative Literature Review

Chen Meng,Caroline Cohrssen,Carrie G.L. Lau The Pacific Early Childhood Education Research Ass 2023 Asia-Pacific journal of research in early childhoo Vol.17 No.1

This paper presents a review of the literature on the perspectives on school readiness and the transition to school process of children, parents, kindergarten- and primary teachers in Mainland China. In addition, the ways in which parents and teachers support child transitions from kindergarten to primary school are examined. Forty-seven publications from three English databases and one Chinese database were included. On measures of cognitive and socio-emotional development, urban children were reported to outperform their rural counterparts, and girls outperformed boys. Compared with children of ethnic minority backgrounds, Han children demonstrated higher levels of cognitive and socio-emotional development than their peers. Children with special educational needs scored lower than typically developing children on assessments of school readiness. Kindergarten and primary teachers acknowledged the importance of socio-emotional development and approaches to learning, but differed on expectations relating to academic achievement and behavior. Family socioeconomic status (SES) and the extent to which parents prioritized academic skills were associated with parents’ beliefs, practices, and children’s school readiness. Authoritative parenting contributed to children’s socio-emotional, cognitive and language development on measures of school readiness. Research implications and future directions regarding the perceptions and practices involved in children’s transition to school are proposed.

Axial compressive behavior of high strength concrete-filled circular thin-walled steel tube columns with reinforcements

Meng Chen,Yuxin Cao,Ye Yao 국제구조공학회 2023 Structural Engineering and Mechanics, An Int'l Jou Vol.88 No.1

In this study, circular thin-walled reinforced high strength concrete-filled steel tube (RHSCFST) stub columns with various tube thicknesses (i.e., 1.8, 2.5 and 3.0mm) and reinforcement ratios (i.e., 0, 1.6%, 2.4% and 3.2%) were fabricated to explore the influence of these factors on the axial compressive behavior of RHSCFST. The obtained test results show that the failure mode of RHSCFST transforms from outward buckling and tearing failure to drum failure with the increasing tube thickness. With the tube thickness and reinforcement ratio increased, the ultimate load-carrying capacity, compressive stiffness and ductility of columns increased, while the lateral strain in the stirrup decreased. Comparisons were also made between test results and the existing codes such as AIJ (2008), BS5400 (2005), ACI (2019) and EC4 (2010). It has been found that the existing codes provide conservative predictions for the ultimate load-carrying capacity of RHSCFST. Therefore, an accurate model for the prediction of the ultimate load-carrying capacity of circular thin-walled RHSCFST considering the steel reinforcement is developed, based on the obtained experimental results. It has been found that the model proposed in this study provides more accurate predictions of the ultimate load-carrying capacity than that from existing design codes.

Cognitive Change and Its Predictive Value among Elderly People in Beijing

Chen Meng,Zhe Tang 한국노년학연구회 1999 한국 노년학연구 Vol.8 No.-

The purpose of this study was to observe the longitudinal change of cognitive function of elderly people. Over 180 community-dwelling elderly people were tested with MMSE at baseline and followed up five years later. About 42.9% of 1,225 people who had cognitive impairment at baseline survey were found to be dead in follow-up survey, and the death rate was much higher than that of cognitive intact person, which was 19.45%. Among 1,335 cases who finished MMSE test twice the mean score of MMSE at follow-up was 23.35, which was lower than original mean score (23.77). The rate of people identified as abnormal by education adjusted cutoff point also increased from 8.24% to 17.8%. Viewed individually 51.9% of them remained stable in MMSE score, 24.5% decreased and 23.6% increased after five years. Old people aged 70 or above, less educated, and people who scored around or lower than cutoff point were more likely to decline. Conclusion: The performance of MMSE has certain predictive value to the outcome of elderly people, and cognitive decline in community lived people is quite slow.

Genome-wide identification and expression analysis of the SlNAC gene family in tomato based on a high-quality genome

Chen Xiuling,Mo Fulei,Shen Chunyang,Meng Lingjun,Zou Yuxin,Xue Xiaopeng,Cheng Mozhen,Meng Fanyue,Qi Haonan,Wang Aoxue 한국원예학회 2022 Horticulture, Environment, and Biotechnology Vol.63 No.6

NAC proteins in plants respond to stress and play an important role in plant growth regulation. This regulation occurs through a variety of downstream eff ects mediated by plant hormones in response to stress. In this study, we performed a systematic genome-wide analysis of the NAC gene family in tomato based on genome version SL4.0. We identifi ed 99 SlNAC genes by abiotic stress analysis of conserved motifs and gene structure, phylogenetic analysis, cis-element analysis, chromosome localization analysis, synteny relationship and expression pattern analysis. These 99 SlNAC genes were distributed on all 12 chromosomes. Except for genes without introns, there was no signifi cant correlation between gene structures and phylogenetic relationships. Most of the cis-elements identifi ed were associated with plant hormones and environmental responses. There were 77 SlNAC genes that showed no homogeneity between tomato and wild rice, suggesting that these homologous genes arose after the diff erentiation of dicotyledonous and monocotyledonous plants. The comprehensive analysis of the SlNAC gene family provides a valuable resource for studying this gene family in tomato and a foundation for further study of the functional characteristics of these genes.