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Application of Complementary Error Function to the Transition Zone of Myopic Ablation Shapes in Refractive Surgery

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Journal of Applied Mathematics and Physics 2017年第8期5卷 1521-1528页

作者： guang-ming dai Research and Development Johnson and Johnson Vision Milpitas CA USA

In refractive surgery, the cubic spline fit for the transition zone breaks down for myopia and myopic meridians in mixed astigmatism as in many cases the cubic spline function runs into negative values. In this paper, the complementary error function is proposed instead of the cubic spline function as the transition zone function, due to the availability of analytical expression of its derivatives and the nonnegativity fact. It is shown that with the use of the complementary error function, transition zones for all refractive types work correctly.

关键词： Error Function Complementary Error Function Vision Correction Refractive Surgery Treatment Algorithm

Optimization of Linear Filtering Model to Predict Post-LASIK Corneal Smoothing Based on Training Data Sets

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Applied Mathematics 2013年第12期4卷 1694-1701页

作者： Anatoly Fabrikant guang-ming dai Dimitri Chernyak Research and Development Abbott Medical Optics Milpitas USA

Laser vision correction is a rapidly growing field for correcting nearsightedness, farsightedness as well as astigmatism with dominating laser-assisted in situ keratomileusis (LASIK) procedures. While the technique works well for correcting spherocylindrical aberrations, it does not fully correct high order aberrations (HOAs), in particular spherical aberration (SA), due to unexpected induction of HOAs post-surgery. Corneal epithelial remodeling was proposed as one source to account for such HOA induction process. This work proposes a dual-scale linear filtering kernel to model such a process. Several retrospective clinical data sets were used as training data sets to construct the model, with a downhill simplex algorithm to optimize the two free parameters of the kernel. The performance of the optimized kernel was testedon new clinical data sets that were not previously used for the optimization.

关键词： Simulation-Driven Optimization Downhill Simplex Method Corneal Smoothing LASIK

Monocyte chemotactic protein-inducing protein 1 negatively regulating asthmatic airway inflammation and mucus hypersecretion involvingγ-aminobutyric acid type A receptor signaling pathway in vivo and in vitro

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Chinese Medical Journal 2021年第1期134卷 88-97页

作者： guang-ming dai Jia-Jia Wang Zhi-Hong Chen Ya-Juan Ran Huo-Jin Deng Ruo-Lin Mao Tao Zhu Department of Respiratory Medicine First People's Hospital of Suining CitySuiningSichuan 629000China Department of Rheumatology Medicine Second Affiliated Hospital of Chongqing Medical UniversityChongqing 400010China Department of Respiratory Medicine Zhongshan Hospital of Fudan UniversityShanghai 200032China Department of Pharmacy Second Affiliated Hospital of Chongqing Medical UniversityChongqing 400010China Department of Respiratory Medicine Zhujiang Hospital of Southern Medical UniversityGuangzhouGuangdong 510280China Department of Respiratory Medicine Second Affiliated Hospital of Chongqing Medical UniversityChongqing 400010China

Background:Mounting evidence,consistent with our previous study,showed thatγ-aminobutyric acid type A receptor(GABAAR)played an indispensable role in airway inflammation and mucus hypersecretion in *** chemotactic protein-inducing protein 1(MCPIP1)was a key negative regulator of *** studies showed that inflammation was largely suppressed by enhanced MCPIP1 expression in many inflammatory ***,the role and potential mechanism of MCPIP1 in airway inflammation and mucus hypersecretion in asthma were still not well *** study was to explore the role of MCPIP1 in asthmatic airway inflammation and mucus hypersecretion in both mice and BEAS-2B cells,and its potential ***:In vivo,mice were sensitized and challenged by ovalbumin(OVA)to induce *** inflammation and mucus secretion were *** vitro,BEAS-2B cells were ***(IL)-13 was used to stimulate inflammation and mucus hypersecretion in ***1 Lentiviral vector(LA-MCPIP1)and plasmid-MCPIP1 were used to up-regulate MCPIP1 in lung and cells,***-1,thymic stromal lymphopoietin(TSLP),mucin 5AC(MUC5AC),MCPIP1,and GABAARβ2 expressions were measured in both lung and BEAS-2B *** staining was performed to observe the expression of GABAARβ2 in ***:MCPIP1 was up-regulated by LA-MCPIP1(P<0.001)and plasmid-MCPIP1(P<0.001)in lung and cells,***-induced airway inflammation and mucus hypersecretion,OVA-enhanced MCP-1,TSLP,MUC5AC,and GABAARβ2 expressions,and OVA-reduced MCPIP1 were significantly blunted by LA-MCPIP1 in mice(all P<0.001).IL-13-enhanced MCP-1,TSLP,MUC5AC,and GABAARβ2 expressions,and IL-13-reduced MCPIP1 were markedly abrogated by plasmid-MCPIP1 in BEAS-2B cells(all P<0.001).Conclusion:The results of this study suggested that OVA and IL-13-induced airway inflammation and mucus hypersecretion were negatively regulated by MCPIP1 in both lung and BEAS-2B cells,involving GABAAR si

关键词： Airway inflammation Airway mucus hypersecretion Gamma-aminobutyric acid type A receptor GABAAR IL-13 MCPIP1 Monocyte chemotactic protein-inducing protein 1 Ovalbumin

Dynamic Regulation of Hydrogen Bonding Networks and Solvation Structures for Synergistic Solar‑Thermal Desalination of Seawater and Catalytic Degradation of Organic Pollutants

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Nano-Micro Letters 2025年第2期17卷 548-565页

作者： ming‑Yuan Yu Jing Wu guang Yin Fan‑Zhen Jiao Zhong‑Zhen Yu Jin Qu Beijing Key Laboratory of Advanced Functional Polymer Composites Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China State Key Laboratory of Organic‑Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

Although solar steam generation strategy is efficient in desalinating seawater,it is still challenging to achieve continuous solar-thermal desalination of seawater and catalytic degradation of organic ***,dynamic regulations of hydrogen bonding networks and solvation structures are realized by designing an asymmetric bilayer membrane consisting of a bacterial cellulose/carbon nanotube/Co_(2)(OH)_(2)CO_(3)nanorod top layer and a bacterial cellulose/Co_(2)(OH)_(2)CO_(3)nanorod(BCH)bottom ***,the hydrogen bonding networks inside the membrane can be tuned by the rich surface–OH groups of the bacterial cellulose and Co_(2)(OH)_(2)CO_(3)as well as the ions and radicals in situ generated during the catalysis ***,both SO_(4)^(2−)and HSO_(5)−can regulate the solvation structure of Na^(+)and be adsorbed more preferentially on the evaporation surface than Cl^(−),thus hindering the de-solvation of the solvated Na^(+)and subsequent nucleation/growth of ***,the heat generated by the solar-thermal energy conversion can accelerate the reaction kinetics and enhance the catalytic degradation *** work provides a flow-bed water purification system with an asymmetric solar-thermal and catalytic membrane for synergistic solar thermal desalination of seawater/brine and catalytic degradation of organic pollutants.

关键词： Solar steam generation Seawater desalination Catalytic degradation Bacterial cellulose Cobalt hydroxycarbonate nanorods

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对武术进奥运会的局势及决策分析

湖北师范学院学报（自然科学版） 2000年第3期20卷 5-9页

作者：吕光明罗代华湖北师范学院体系系湖北黄石435002

针对武术必将跨进奥运会大门的局势 ,就如何找准相应对策 ,拟出将武术列为奥运会正式比赛项目的最佳决策 ,以此作为对加速武术进奥运会的建设性意见。

关键词：武术奥运会局势决策

The Complexity and Randomness of Linear Multi-secret Sharing Schemes with Non-threshold Structures

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Acta Mathematicae Applicatae Sinica 2014年第4期30卷 1073-1084页

作者： Chun-ming Tang Shu-guang dai School of Mathematics and Information Science Guangzhou University Key Laboratory of Mathematics and Interdisciplinary Sciences of guangdong Higher Education Institutes guangzhou University State Key Laboratory of Information Security School of Information Science and Technology Sun Yat-Sen University

In a linear multi-secret sharing scheme with non-threshold structures, several secret values are shared among n participants, and every secret value has a specified access structure. The efficiency of a multi- secret sharing scheme is measured by means of the complexity a and the randomness . Informally, the com- plexity a is the ratio between the maximum of information received by each participant and the minimum of information corresponding to every key. The randomness is the ratio between the amount of information distributed to the set of users U = {1, …, n} and the minimum of information corresponding to every key. In this paper, we discuss a and of any linear multi-secret sharing schemes realized by linear codes with non-threshold structures, and provide two algorithms to make a and to be the minimum, respectively. That is, they are optimal.

关键词： secret sharing multi-secret sharing scheme non-threshold multi-access structure linear code complexity randomness

Chondroitinase ABC combined with Schwann cell transplantation enhances restoration of neural connection and functional recovery following acute and chronic spinal cord injury

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Neural Regeneration Research 2025年第5期20卷 1467-1482页

作者： Wenrui Qu Xiangbing Wu Wei Wu Ying Wang Yan Sun Lingxiao Deng Melissa Walker Chen Chen Heqiao dai Qi Han Ying Ding Yongzhi Xia George Smith Rui Li Nai-Kui Liu Xiao-ming Xu Spinal Cord and Brain Injury Research Group Stark Neurosciences Research InstituteDepartment of Neurological SurgeryIndiana University School of MedicineIndianapolisINUSA Department of Hand Surgery the Second Hospital of Jilin UniversityChangchunJilin ProvinceChina Shriners Hospitals Pediatric Research Center Temple University School of MedicinePhiladelphiaPAUSA Department of Anatomy&Cell Biology Indiana University School of MedicineIndianapolisINUSA

Schwann cell transplantation is considered one of the most promising cell-based therapy to repair injured spinal cord due to its unique growth-promoting and myelin-forming properties.A the Food and Drug Administration-approved Phase I clinical trial has been conducted to evaluate the safety of transplanted human autologous Schwann cells to treat patients with spinal cord injury.A major challenge for Schwann cell transplantation is that grafted Schwann cells are confined within the lesion cavity,and they do not migrate into the host environment due to the inhibitory barrier formed by injury-induced glial scar,thus limiting axonal reentry into the host spinal *** we introduce a combinatorial strategy by suppressing the inhibitory extracellular environment with injection of lentivirus-mediated transfection of chondroitinase ABC gene at the rostral and caudal borders of the lesion site and simultaneously leveraging the repair capacity of transplanted Schwann cells in adult rats following a mid-thoracic contusive spinal cord *** report that when the glial scar was degraded by chondroitinase ABC at the rostral and caudal lesion borders,Schwann cells migrated for considerable distances in both rostral and caudal *** Schwann cell migration led to enhanced axonal regrowth,including the serotonergic and dopaminergic axons originating from supraspinal regions,and promoted recovery of locomotor and urinary bladder ***,the Schwann cell survival and axonal regrowth persisted up to 6 months after the injury,even when treatment was delayed for 3 months to mimic chronic spinal cord *** findings collectively show promising evidence for a combinatorial strategy with chondroitinase ABC and Schwann cells in promoting remodeling and recovery of function following spinal cord injury.

关键词： axonal regrowth bladder function chondroitinase ABC functional recovery glial scar lentivirus migration Schwann cell spinal cord injury transplantation

Failure Mechanism of Reflow Conductor Roll of Electroplating Tinning Line

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Journal of Iron and Steel Research International 2006年第2期13卷 33-36页

作者： FU Han-guang ZHOU Qiang dai ming-shan Department of Mechanical Engineering Tsinghua University Beijing 100084 China School of Information Technology and Management Engineering Shenyang University Shenyang 110044 Liaoning China Cold Rolling Plant Baoshan Iron and Steel Co Ltd Shanghai 201900 China

The surface roughness of reflow conductor roll was checked on membrane sample. The surface morphology of conductor roll was observed by microscope, and the composition of adhered layer on conductor roll surface was analyzed by X-ray spectroscope. The results show that tin adhesion is the main reason for failure of conductor roll, and the failure of conductor roll is accelerated by wear. The measures to decrease tin adhesion and improve wear resistance were put forward.

关键词： reflow conductor roll adhered tin wear failure

Experimental investigation on migration and retention mechanisms of elastic gel particles(EGPs)in pore-throats using multidimensional visualized models

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Petroleum Science 2022年第5期19卷 2374-2386页

作者： Yi-Fei Liu Chen-Wei Zou Xu-guang Lou ming-Wei Gao guang Zhao ming-Wei Zhao Cai-Li dai Shandong Key Laboratory of Oilfield Chemistry(China University of Petroleum(East China)) Qingdao266580PR China Key Laboratory of Unconventional Oil&Gas Development(China University of Petroleum(East China)) Ministry of EducationQingdao266580PR China China Southern Petroleum Exploration&Development Corporation HaikouHainan570216People's Republic of China

Knowledge of migration and retention mechanisms of elastic gel particles(EGPs)in pore-throats is essential for the effective application of EGPs as a smart sweep improvement and profile control agent for enhanced oil recovery(EOR).The matching coefficient(defined as the ratio of particle size to pore-throat size)is used to investigate its influence on migration,retention and profile control performance of EGPs.A 1-D continuous pore-throat visualization model(PTVM),a 2-D heterogeneous PTVM and a 3-D heterogeneous core model were constructed and used to investigate pore-scale migration,retention and controlling mechanism of migration and retention characteristics on EGPs profile *** results of the 1-D continuous PTVM indicated that while the matching coefficient was in the optimal range(i.e.,0.20-0.32),the EGPs could not only smoothly migrate to the deeper pore-throats,but also form stable retention in the pores to resist the erosion of injected water,which was conducive to the effective indepth profile *** results of the 2-D heterogeneous PTVM verified that the sweep efficiency in low-permeability regions could be significantly improved by in-depth migration and stable retention of EGPs in the pore-throats with an optimal matching coefficient(0.29),which was much better than that in cases with a smaller matching coefficient(0.17)or an excessive matching coefficient(0.39).Moreover,the NMR displacement experiments of 3-D heterogeneous cores were carried out to simulate the EGPs profile control in actual reservoir porous *** images and T2 spectrum curves of crude oil showed that EOR in the low-permeability layer was highest(56.1%)using EGPs profile control with an optimal matching coefficient,attributing to the in-depth migration and stable retention of EGPs.

关键词： Enhanced oil recovery Elastic gel particles Matching coefficient In-depth profile control Pore-throat visualization models