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She-Min Zhu,Da-Hai Zheng,Yuesong Shen,Yun-Shun Qiu,Bing Li,Yan-Wei Zeng,Shubao Shen,Shemin Zhu 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.24 No.-
Effects of catalyst loading amount, reaction temperature, O2 concentration, NH3/NO molar ratio and SO2 on low-temperature catalytic performance of the Mn–La–Ce–Ni–Ox (Mn/La/Ce/Ni = 2.5:2.5:1:1 in mol)/ PPS for NH3-SCR of NO were mainly studied. Results showed that the filter with catalyst loading amount of 250 g/m2 obtained more than 95% NO removal efficiency at 200 8C under filtration velocity of 1 m/min. The NO removal efficiency was still above 85% by injecting 300 ppm SO2 at 200 8C. Anyway, the Mn–La– Ce–Ni–Ox/PPS catalytic filter is promising to achieve the expectation of simultaneous removing particulate and NOx from low-sulfur flue gas in cement kiln.
Yong Feng,Haoxiang Wang,Min Zhang,Zihao Zhu,Xiaoyu Wang,Binhui Jia,Xiaolin Jia 한국정밀공학회 2020 International Journal of Precision Engineering and Vol.21 No.5
Titanium Matrix Composites (TMCs) are widely used in aerospace because of their excellent mechanical properties, but itis accompanied by the diffi culty of machining. Ultrasonic Vibration Assisted Drilling (UVAD) can eff ectively reduce theaxial force in the drilling process and improve the integrity of machined surface. In this paper, the discontinuous titaniummatrix composite TiBw/TC4 was developed by preparation method of in situ. In order to obtain the machining parameters ofTiBw/TC4 and guide the application of UVAD in TiBw/TC4, the contrast experiments between conventional drilling (CD)and UVAD were carried out to analyze the variation law of axial force. In this experiment, the frequency and amplitude ofultrasonic vibration were set as 35 kHz and 2.5 μm respectively, and the drilling conditions were that the spindle speed was(1500/1600/1700/1800/1900) r/min and the feed speed was (6/7/8/9/10) mm/min. The surface integrity of hole wall suchas roughness, residual stress and white layer was discussed. The experimental results show that the yield strength of TiBw/TC4 developed by in situ is 51% higher than that of pure TC4. Compared with CD, the axial force of TiBw/TC4 in UVADis signifi cantly reduced, and the formation of continuous chips and winding cutters is eff ectively reduced. Besides, the wearrate of the cutters is reduced. The number and size of hole wall defects, such as scratches, delamination and tearing, areobviously reduced. As well as the residual stress, white layer thickness and hole wall roughness are reduced by 4.67–16.31%,42.48% and 5.98–29.27% respectively. Within the limits of the experiment, when the spindle speed is 1700 r/min and thefeed speed is 8 mm/min, UVAD can obtain better hole wall surface integrity parameters.
Motives for Empathy among Clinical Nurses in China: A Qualitative Study
Zhu, Yu,He, Ming-Mei,Zhu, Ji-Min,Huang, Li,Li, Bai-Kun 한국간호과학회 2020 Journal of Korean Academy of Nursing Vol.50 No.6
Purpose: This study aimed to explore the motives of clinical nurses for experiencing empathy with patients and their families based on a self-determination theory framework. Methods: Semi-structured face-to-face interviews with twenty-one nurses at four tertiary hospitals in Anhui, China, were conducted, recorded and transcribed. A content analysis with a directed approach was performed. Results: An analysis of the interview transcripts revealed three categories of empathy motivation: autonomous motivation, controlled motivation and a lack of empathy motivation. Autonomous motivation included personal interests, enjoyment and a sense of value, pure altruism, assimilation, and recognition of the importance of empathy. Controlled motivation highlighted pressures from oneself and others, the possibility of tangible or intangible rewards, and avoidance of adverse effects. Finally, a lack of empathy motivation referred to a lack of intention for empathy and denial of the value of empathy. Conclusion: This study provides a deep understanding of the motives underlying empathy in nurses. The results reveal the reasons for empathy and may support the development of effective strategies to foster and promote empathy in nurses.
Characterization of the Open Reading Frame 35 of Bombyx mori Nucleopolyhedrovirus
Zhu, Ying Min,Li, Guo Hui,Yao, Qin,Chen, Ke Ping,Guo, Zhong Jian Korean Society of Sericultural Science 2010 International Journal of Industrial Entomology Vol.21 No.2
Open reading frame 35 (bm35) of the Bombyx mori nucleopolyhedrovirus (BmNPV) is a special gene whose homologues are only found in some group-I nucleopolyhedroviruses, suggesting that bm35 plays a specific role in the viral life cycle. This paper described the characterization of BmNPV bm35. Computerassisted sequence analysis shows that a putative RING finger motif is observed in the protein, Bm35 encoded by bm35. The coding sequence of bm35 was amplified and subcloned into the vector pET30a(+) and the $(His)_6$-tagged fusion protein His-Bm35 was expressed in the Escherichia coli BL21 (DE3) LysS cells. The bm35 transcript and Bm35 protein were detected in BmNPV-infected BmN cells at 12~48 h post infection (p.i.) by RT-PCR and Western blot analysis using the polyclonal antibody generated by immunizing a rabbit with purified $(His)_6$-tagged Bm35, suggesting that bm35 is synthesized in the late stage of BmNPV infection cycle. Bm35 was not a structural component associated with budded virus (BV) and occlusion derived virus (ODV). These data indicated that bm35 is a functional gene in the BmNPV life cycle.
불소화 폴리아크릴레이트-폴리우레탄 라텍스 혼성필름의 그레디언트 구조와 표면성질
Min Zhu,Kun Chen,Yu Fang Zhang,Xiang Rong Wang,Xiang Dong Zhou 한국고분자학회 2014 폴리머 Vol.38 No.3
In order to investigate the characteristics of the gradient fluorinated polyacrylate and polyurethane latex blendfilms, the fluorinated polyacrylate emulsion and the polyurethane emulsion were synthesized, and then the both emulsionswere blended at a series of ratios. The effects of content of the fluorinated polyacrylate on the gradient structure and surfaceproperty of the blended films were assessed by AFM, XPS, SEM-EDX and surface free energy measurements. Itappeared that, while the content of the fluorinated polyacrylate latex was up to 30%, the fluorinated polyacrylate particleswere selectively gathered on the film-air (F-A) and film-glass (F-G) interfaces at room temperature. When the contentof the fluorinated polyacrylate was under 30%, the gradient structure of fluorinated component was not evident. The furtherincreasing of fluorinated polyacrylate in the mixed system facilitated the formation and enlargement of gradient structure,but the adhesion of film decreased a little.
Identification and Characterization of Bombyx mori LDH Gene through Bioinformatics Approaches
( Min Feng Zhu ),( Ke Ping Chen ),( Qin Yao ) 한국잠사학회 2007 International Journal of Industrial Entomology Vol.15 No.2
Lactate dehydrogenase (LDH) is a ubiquitous enzyme that plays a significant role in the clinical diagnosis of pathologic processes. Discovery of the LDH (BmLDH) gene in B. mori may shed light on its role in the biology of Lepidoptera species, and afford further understanding of the function of the enzyme. In this study, we used the bioinformatics tools to identify LDH gene in B. mori. Sequence analysis showed that BmLDH cDNA contains a 996 bp open reading frame, encoding 331 AA proteins, with seven introns. Compared with hHLDH (human heart LDH), BmLDH contained the same key active sites. Domain search and protein fold recognition analyses provide compelling evidences that the deduced protein is a LDH. Using the computer program MEGA3, we conducted a search for homo-logs of BmLDH among many eukaryotic species and confirmed that the BmLDH was conserved in all organisms investigated. This gene has been registered in GenBank under the accession number EU000385.
Min Zhu,Song, Yoo-Han,Uhm, Ki-Baek,Richard W. Turner,Lee, Hoon-Ho,George K. Roderick Korean Society of Applied Entomology 2000 Journal of Asia-Pacific Entomology Vol.3 No.1
Brown planthopper (nilaparvata Lugens) is a migrant pest which can migrate from tropical area into subtropical and temperate area every year and caused a lot of damage in rice production. To understand the migration process of this pest, the Boundary Layer Atmospheric(BLAYER) model and Geographic Information System(GIS) were used to analyze the migration waves from June to July in 1997, 1998 and 1999 in South Korea. The simulation results showed: 1) Each migration wave had different mass distribution and immigration area at different time; 2) The vertical air current value distributed in BPH taking-off and landing area was about several centimeters per second, which is lower than BPH flight ability. 3) The trajectory route showed that BPH had different migration routes emigrated from different source areas according to the weather system. The main source of BPH immigrated in South Korea was from the East part of Guangdong Province and South East part of Fujian Province, Perple's Republic of China. 4) Comparing with the different migration heights (733m, 1,348m and 1,963m above ground level), BPH mass distributed more northwestward in low height than in high height. 5) BPH mass movement also gave another evidence to identify the light trap data in late July.
Zinc Oxide-Enhanced Piezoelectret Polypropylene Microfiber for Mechanical Energy Harvesting
Zhu, Jianxiong,Zhu, Yali,Song, Weixing,Wang, Hui,Gao, Min,Cho, Minkyu,Park, Inkyu American Chemical Society 2018 ACS APPLIED MATERIALS & INTERFACES Vol.10 No.23
<P>This paper reports zinc oxide (ZnO)-coated piezoelectret polypropylene (PP) microfibers with a structure of two opposite arc-shaped braces for enhanced mechanical energy harvesting. The ZnO film was coated onto PP microfibers via magnetron sputtering to form a ZnO/PP compound structure. Triboelectric Nanogenerator (TENG) based on ZnO/PP microfiber compound film was carefully designed with two opposite arc-shaped braces. The results of this study demonstrated that the mechanical energy collection efficiency of TENG based on piezoelectret PP microfiber was greatly enhanced by the coated ZnO and high-voltage corona charging method. We found that, with the step-increased distance of traveling for the movable carbon black electrode, an electrical power with an approximately quadratic function of distance was generated by this mechanical-electrical energy conversion, because more PP microfibers were connected to the electrode. Further, with a full contact condition, the peak of the generated voltage, current, and charges based on the ZnO/PP microfibers by this mechanical-electrical energy conversion with 1 m/s<SUP>2</SUP> reached 120 V, 3 μA, and 49 nC, respectively. Moreover, a finger-tapping test was used to demonstrate that the ZnO/PP microfiber TENG is capable of lighting eight light-emitting diodes.</P> [FIG OMISSION]</BR>