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A survey on assembly lines and its types

Ullah SAIF,Zailin GUAN,Baoxi WANG,Jahanzeb MIRZA,Shiyang HUANG

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 2, Pages 95-105 doi: 10.1007/s11465-014-0302-1

Abstract:

Assembly lines are useful for mass production of standard as well as customized products.A survey of different problems in different types of assembly lines and some of the critical and on goingThe provided research information is momentous for the research community in assembly line area to proceedfurther in the presented issues of assembly lines.

Keywords： assembly lines line balancing survey

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Assembly variation analysis of flexible curved surfaces based on Bézier curves None

Zhen-yu LIU, Shi-en ZHOU, Jin CHENG, Chan QIU, Jian-rong TAN

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 6, Pages 796-808 doi: 10.1631/FITEE.1601619

Abstract: of solid bodies, because of structural deformations in the assembly process.lines.A methodology based on Bézier curves is proposed to represent the side lines of surfaces.The deviations of feature points on side lines are obtained through control point distribution and areFinally, the proposed method is illustrated in two cases of antenna surface assembly.

Keywords： Assembly variation analysis Feature points Side lines Flexible curved surfaces Bézier curves

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Natural killer cell lines in tumor immunotherapy

Min Cheng, Jian Zhang, Wen Jiang, Yongyan Chen, Zhigang Tian

Frontiers of Medicine 2012, Volume 6, Issue 1, Pages 56-66 doi: 10.1007/s11684-012-0177-7

Abstract: including activating autologous NK cells, expanding allogeneic NK cells, usage of stable allogeneic NK cell linesand genetically modifying fresh NK cells or NK cell lines.Additionally, genetically modifying NK cell lines by increasing their expression of cytokines and engineeringIn this review, NK cells in tumor immunotherapy are discussed, and a list of therapeutic NK cell lines

Keywords： natural killer cell natural killer cell line tumor immunotherapy genetic modification

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Assembly of biosynthetic pathways in

Lidan Ye,Xiaomei Lv,Hongwei Yu

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 1, Pages 126-132 doi: 10.1007/s11705-016-1597-8

Abstract: A robust and versatile tool for multigene pathway assembly is a key to the biosynthesis of high-valueelement replacement, shuttle plasmid, auxotrophic marker independence, GAL regulation, and decentralized assembly

Keywords： pathway assembly toolbox reiterative recombination S. cerevisiae biosynthesis

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A novel task-oriented framework for dual-arm robotic assembly task

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3, Pages 528-545 doi: 10.1007/s11465-021-0638-2

Abstract: In industrial manufacturing, the deployment of dual-arm robots in assembly tasks has become a trend.planning with visual perception to facilitate robot deployment from perception to execution and finish assemblyThe assembly task and manipulation sequences can be obtained by analyzing and reasoning the state transitionNext, the corresponding assembly manipulation can be generated and parameterized according to the differences

Keywords： dual-arm assembly AI reasoning intelligent system task-oriented motion planning visual perception

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Pareto lexicographic α-robust approach and its application in robust multi objective assembly line balancing

Ullah SAIF,Zailin GUAN,Baoxi WANG,Jahanzeb MIRZA

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3, Pages 257-264 doi: 10.1007/s11465-014-0294-x

Abstract: an application of the proposed method on a simple problem of multi objective optimization of simple assembly

Keywords： Pareto lexicographic α-robust assembly line balancing

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Achieving desired nodal lines in freely vibrating structures via material-field series-expansion topology

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0758-y

Abstract: Accurately controlling the nodal lines of vibrating structures with topology optimization is a highlyseries-expansion (MFSE)-based topology optimization design strategy for precisely controlling nodal linestypical optimization targets are established: (1) minimizing the difference between structural nodal linesand their desired positions, and (2) keeping the position of nodal lines within the specified rangecircumvents various numerical difficulties and can effectively obtain the desired vibration modes and nodal lines

Keywords： nodal line topology optimization structural dynamics design material-field series-expansion

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Assembly design system based on engineering connection

Wensheng YIN

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4, Pages 423-432 doi: 10.1007/s11465-016-0382-1

Abstract:

An assembly design system is an important part of computer-aided design systems, which are importantThe traditional assembly design system does not record the connection information of production on theAn assembly design model based on the relationship of engineering connection is presented.The model is an And/Or graph and has the ability to record all assembly schemes.Finally, VC++6.0 is used to develop a prototype system called Connect-based Assembly Planning (CAP).

Keywords： product design assembly design engineering connection assembly sequence planning

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Effect on proliferation and apoptosis of T24 cell lines via silencing DNMT1 with RNA interference

ZHANG Shilong, ZENG Fuqing, PENG Shibo, WANG Liang

Frontiers of Medicine 2008, Volume 2, Issue 4, Pages 374-379 doi: 10.1007/s11684-008-0072-4

Abstract: Expression of DNA methyltransferase 1 (DNMT1), which plays an important role on aberrantly methylated CpG in the promoter regions of tumor suppressor genes (TSGs), is higher in bladder cancer cells than in normal bladder cells. Therefore, its overexpression is closely related to tumor formation. In this study, the eukaryotic vector pshRNA-DNMT1 was constructed and transfected into T24 cells. Levels of DNMT1 mRNA and protein were detected by reverse transcription-polymerase chain reaction (RT-PCR) and western blot. Relative to the blank control at the 24th, 48th and 72nd hour after transfection of pshRNA-DNMT1, the inhibitory rates of DNMT1 mRNA levels in T24 cells were 28.44%, 52.48%, 70.91%, respectively. Those of DNMT1 proteins were 24.27%, 57.79%, and 77.74%, respectively. Proliferation and apoptosis were assayed by MTT and flow cytometry with Annexin-V-FITC/PI staining. The growth inhibition rates of pshRNA-DNMT1 at the 24th, 48th and 72nd hour after transfection of pshRNA-DNMT1 were (4.34 ± 0.76)%, (9.87 ± 1.54)% and (13.78 ± 1.93)%, respectively. There were statistically significant differences between pshRNA-DNMT1 and the control blank at each time points ( < 0.01); 24, 48 and 72 hours after T24 cells were transfected by pshRNA-DNMT1, the apoptosis rates of pshRNA-DNMT1 were (3.87 ± 0.81)%, (8.69 ± 1.23)% and (11.46 ± 1.24)%, respectively ( < 0.01 blank control). Based on this case, our conclusion is that the recombinant plasmid pshRNA-DNMT1 can silence the expression of gene DNMT1 mRNA and protein effectively, and to some extent, it also can inhibit the proliferation of bladder cancer cell and promote the cellular apoptosis.

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Enzyme-instructed self-assembly of peptides containing phosphoserine to form supramolecular hydrogels

Jie Zhou, Xuewen Du, Jiaqing Wang, Natsuko Yamagata, Bing Xu

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4, Pages 509-515 doi: 10.1007/s11705-017-1613-7

Abstract: Enzyme-instructed self-assembly (EISA) offers a facile approach to explore the supramolecular assemblies

Keywords： enzyme-instructed self-assembly phosphoserine phosphatase supramolecular hydrogel

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Relationship between the number of tapping-induced secondary laticifer lines and rubber yield among

Yueyi CHEN,Xinsheng GAO,Xiaofei ZHANG,Weimin TIAN

Frontiers of Agricultural Science and Engineering 2016, Volume 3, Issue 4, Pages 363-367 doi: 10.15302/J-FASE-2016122

Abstract: Results showed that the number of tapping-induced lines of secondary laticifers varied in different germplasm

Keywords： Hevea brasiliensis rubber yield breeding early evaluation tapping secondary laticifer differentiation

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filtering-based bridge weigh-in-motion system on a continuous multi-girder bridge considering the influence lines

Hanli WU, Hua ZHAO, Jenny LIU, Zhentao HU

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5, Pages 1232-1246 doi: 10.1007/s11709-020-0653-0

Abstract: To further improve the accuracy of the BWIM system, the field-calibrated influence lines (ILs) of a continuous

Keywords： bridge weigh-in-motion continuous bridge fast Fourier transform influence line axle weight calculation

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Distinct community assembly processes underlie significant spatiotemporal dynamics of abundant and rare

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 6, doi: 10.1007/s11783-021-1513-4

Abstract:

• Season and landform influenced spatiotemporal patterns of abundant and rare taxa.

Keywords： Rare taxa Biogeography Community assembly Bacterioplankton The Yangtze River

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Research on constraint-based virtual assembly technologies

YANG Rundang, WU Dianliang, FAN Xiumin, YAN Juanqi

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2, Pages 243-249 doi: 10.1007/s11465-007-0043-5

Abstract: To realize a constraint-based virtual assembly operation, the unified representations of the assemblyFirst, the automatic recognition algorithm based on the assembly relation is used to determine the positionThese algorithms have been applied to the integrated virtual assembly environment (IVAE) system.supported constraint treatments in the IVAE and realized the closer combination of the virtual and the real assembly

Keywords： movement DOF recognition algorithm assembly orientation combination

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The construction of pseudo-Janus silica/surfactant assembly and their application to stabilize Pickering

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7, Pages 1101-1113 doi: 10.1007/s11705-021-2095-1

Abstract: Based on the emulsification experimental results, the interaction models and the self-assembly behaviorstudy could help to better understand the construction mechanism of pseudo-Janus silica/surfactant assembly

Keywords： Janus nanoparticles surfactant double phase inversion self-assembly enhanced oil recovery