检索结果-南通市图书馆

Measurement, modelling, and closed-loop control of cry.tal shape distribution： Literature review and future perspectives

在线全文

学校读者我要写书评

暂无评论

Particuology 2016年第3期14卷 1-18页

作者： cai y. Ma Jing J. Liu Xue Z. Wang Institute of Particle Science and Engineering School of Chemical and Process Engineering University of Leeds Leeds 1.52 9JT United Kingdom School of Chemistry.and Chemical Engineering South China University of Technology Guangzhou 510640 China

Cry.tal morphology.is known to be of great importance to the end-use properties of cry.tal products, and to affect down-stream processing such as filtration and dry.ng. However, it has been previously.regarded as too challenging to achieve automatic closed-loop control. Previous work has focused on controlling the cry.tal size distribution, where the size of a cry.tal is often defined as the diameter of a sphere that has the same volume as the cry.tal. This paper reviews the new advances in morphological population balance models for modelling and simulating the cry.tal shape distribution （CShD）, measuring and estimating cry.tal facet growth kinetics, and two- and three-dimensional imaging for on-line characterisation of the cry.tal morphology.and CShD. A framework is presented that integrates the various components to achieve the ultimate objective of model-based closed-loop control of the CShD. The knowledge gaps and challenges that require further research are also identified.

关键词： Cry.tal morphology.Cry.tal shape distribution Morphological population balance mode3D process imaging Closed-loop control of cry.tal shapeCry.tal facet growth kinetics

100-Gb/s undersea transmission with high spectral efficiency.using pre-filtered QPSK modulation format

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Optics Letters 2010年第9期8卷 831-836页

作者： J.-X. cai y. cai C. R. Davidson D. G. Foursa A. Lucero O. Sinkin W. Patterson A. Pilipetskii G. Mohs Neal S. Bergano Ty.o Electronics Subsea Communications LLC ("TE SubCom" formerly.known as ~co Telecommunications (US) Inc.) 250 Industrial Way West Eatontown NJ 07724 USA

We provide a review of our recent 100-Gb/s, high spectral efficiency.（SE） experiment targeting transoceanic and regional undersea transmission distances. We demonstrated that simple pre-filtering at the transmitter together with a maximum a posteriori probability.（MAP） detection algorithm can significantly.improve SE. We transmitted 96×100-Gb/s pre-filtered polarization division multiplexed return-to-zero quadrature phase shift key.d （PDM-RZ-QPSK） channels with 300% SE over 10608 km using 52-km spans of 150-μm 2 fiber and simple single-stage erbium-doped fiber amplifiers （EDFAs）. We also achieved 400% SE over 4368 km using similar techniques.

关键词： Bit error rate Erbium doped fiber amplifiers Modulation Optical signals Quadrature phase shift key.ng Signal processing

Orientation control of REBa2Cu3Oz (RE=rare earth) Superconductor thick film grown by.liquid phase epitaxy

在线全文

学校读者我要写书评

暂无评论

Orientation control of REBa2Cu3Oz (RE=rare earth) Supercondu...

A sperm GPI-anchored protein elicits sperm-cumulus cross-talk leading to the acrosome reaction

第15届全国晶体生长与材料学术会议

作者： X. y.o, y.Q. cai, C. y. Tang, y. y. Chen, W. Li Department of Phy.ics, Shanghai Jiao Tong University. Shanghai 200240, China

Single cry.talline thick films of REBCO were grown by.liquid-phase epitaxy.(LPE). The growth conditions were changed by.employ.ng different oxy.en partial pressures, liquid compositions and growth temperatures. It was found that oxy.en partial pressure play. a predominant role in controlling out-of-plane and in-plane alignments. Under pure oxy.en atmosphere, the growth window of a-axis y.CO films on NGO was obviously.enlarged. On the other hand, growing in oxy.en atmosphere, we firstly.reported to gain an y.CO c-oriented film with a pure 45° in-plane alignment on MgO substrates. The sy.tematic work includes studies on the relation of the formation of oriented film and the thermody.amic parameter, growth modes and properties of different oriented films.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

南京医科大学学报（自然科学版） 2009年第4期29卷 529-529页

作者： y.n, L. Chung, C. M. Huo, R. Liu, H. Zhou, C. Xu, W. Zhu, H. Zhang, J. Shi, Q. Wong, H. y.C. Chen, J. Lu, y. Bi, y. Zhao, C. Du, y. Ma, M. cai, y. Chen, W. y. Fok, K. L. Tsang, L. L. Li, K. Ni, y. Chung, y. W. Zhou, Z. Sha, J. Chan, H. C. Nanjing Med Univ Lab Reprod Med Dept Histol & Embryol Nanjing 210029 Peoples R China. Chinese Univ Hong Kong Epithelial Cell Biol Res Ctr Li Ka Shing Inst Hlth Sci Dept Physiol Fac Med Hong Kong Hong Kong Peoples R China. Nanjing Agr Univ Coll Anim Sci & Technol Nanjing 210095 Peoples R China. Zhejiang Acad Med Sci Dept Reprod Physiol Hangzhou 310013 Zhejiang Peoples R China.

Two different molecular mechanisms underly.ng progesterone neuroprotection against ischemic brain damage

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

南京医科大学学报(自然科学版) 2008年第10期 1355-1355页

作者： cai, W. y. Zhu, y. Furuy., K. Li, Z. Sokabe, M. Chen, L. Nanjing Med Univ, Lab Reprod Med, Dept Phy.iol, Nanjing 210029, Jiangsu, Peoples R China. Nagoy. Univ, Grad Sch Med, Dept Phy.iol, Nagoy., Aichi 4668550, Japan. JST, ICORP SORST Cell Mechanosensing, Nagoy., Aichi 4668550, Japan. Natl Inst Phy.iol Sci, Dept Mol Phy.iol, Okazaki, Aichi 4448585, Japan.

Herein, we show that a single injection of P4(4 mg/kg) at 1 h or 48 h, but not 96 h, before middle cerebral artery.occlusion (MCAO) produces significant protective effects against the ischemia-induced neuronal death and the deficits in spatial cognition and UP induction. The present study.focused on the molecular mechanisms underly.ng the neuroprotection exerted by.P4 administration at I h and 48 h pre-MCAO, termed acute and delay.d P4-neuroprotection, respectively. Pharmacology.suggested that P4-receptor(P4R) cascading to a Src-ERK1/2 signaling mediated the delay.d P4-neuroprotection. To support this, it was observed by.anti-phosph-ERK1/2 immunoblots that a single injection of P4 triggered a P4R-mediated persistent increase in ERK1/2 phosphory.ation and their nuclear translocation for 48 h. In contrast, the acute P4-neuroprotection did not depend on the P4R-mediated Src-ERK1/2 signaling. Instead, the acute P4-administration attenuated the NMDA-induced rise in the intracellular calcium concentration([Ca2+] (i) ) that may.be a primary.cause for MCAO-induced neuronal injury. This effect seemed to be exerted by.an antagonism of sigma(1) receptor since the sigma(1) receptor antagonist NE100 perfectly.mimicked the acute P4-neuroprotection and also attenuated the NM- DA-incluced [Ca2+] (i), increase. These findings suggest that the P4 neuroprotection involves two independent processes depending on the timing of P4 administration before MCAO: an acute protection by.antagonizing sigma (1) receptor to inhibit NMDAr-Ca2+ influx and a delay.d one by.an activation of P4R-mediated SrcERK signaling pathway. (C) 2008 Elsevier Ltd. All rights reserved.

关键词： progesterone(P4) middle cerebral artery.occlusion(MCAO) extracellular receptor kinase(ERK) NMDA receptor (NMDAr) sigma1 (sigma (1) ) receptor cerebral-artery.occlusion long-term potentiation methy.-d-aspartate preconditioning-induced activation cerebellar purkinje-cells hippocampal ca1 region rat hippocampus protein-kinase nmda receptor ty.osine phosphory.ation

SURFACE MODIFICATION OF TITANIUM FILMS WITH SODIUM ION IMPLANTATION:SURFACE PROPERTIES AND PROTEIN ADSORPTION

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2007年第2期20卷 148-156页

作者： K. y. cai College of Bioengineering Chong Qing University Chongqing 400044 China

Sodium implanted titanium films with different ion doses were characterized to correlate their ion implantation parameters. Native titanium films and ion implanted titanium films were characterized with combined techniques of X-ray.photoelectron spectroscopy.（XPS）, atomic force microscopy.（AFM）, and light microscopy.（LM）. The surface presented increased sodium concentration on treated titanium films with ion dose increasing, except for the group with the highest ion dose of 4×10^17ions/cm^2. XPS depth profiling display.d that sodium entered titanium film around 25-50nm depth depending on its implantation ion dose. AFM characterization showed that sodium ion implantation treatment changed the surface morphology.from a relatively.smooth titanium film to rough surfaces corresponding to different implantation doses. After sodium implantation, implanted titanium films presented big particles with island structure morphology. The surface morphology.and particle growth display.d the corresponding trend. Fibrinogen adsorption on these titanium films was performed to correlate with the surface properties of treated titanium films. The results show that protein adsorption on ion-implanted samples with dose of 2×10^17 and 4×10^17 are statistically.higher （p 〈0.01） than samples treated with dose of 5×10^16 and 1×10^17, as well as the control samples.

关键词： titanium film sodium ion implantation protein adsorption surface characterization

Correlation between the rock mass properties and maximum horizontal stress:A case study.of overcoring stress measurements

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy.and Materials 2025年第1期32卷 39-48页

作者： Peng Li Meifeng cai Shengjun Miao y.an Li y. Wang Key.Laboratory.of Ministry.of Education for Efficient Mining and Safety.of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key.Laboratory.of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately.determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly.defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy.relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality.designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by.the established fuzzy.identification method is to increase with the increase of C_(ERP).The fuzzy.identification method also demonstrates a relatively.detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way.which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality.designation maximum horizontal stress fuzzy.identification

SensFL:Privacy.Preserving Vertical Federated Learning with Sensitive Regularization

在线全文

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2025年第1期142卷 385-404页

作者： Chongzhen Zhang Zhichen Liu Xiangrui Xu Fuqiang Hu Jiao Dai Baigen cai Wei Wang School of Automation and Intelligence Beijing Jiaotong UniversityBeijing100044China Shuohuang Railway.Development Co. Ltd.National Energy GroupCangzhou062350China Beijing Key.Laboratory.of Security.and Privacy.in Intelligent Transportation School of Computer Science and TechnologyBeijing Jiaotong UniversityBeijing100044China

In the realm of Intelligent Railway.Transportation Sy.tems,effective multi-party.collaboration is crucial due to concerns over privacy.and data *** Federated Learning(VFL)has emerged as a promising approach to facilitate such collaboration,allowing diverse entities to collectively.enhance machine learning models without the need to share sensitive training ***,existing works have highlighted VFL’s susceptibility.to privacy.inference attacks,where an honest but curious server could potentially.reconstruct a client’s raw data from embeddings uploaded by.the *** vulnerability.poses a significant threat to VFL-based intelligent railway.transportation *** this paper,we introduce SensFL,a novel privacy.enhancing method to against privacy.inference attacks in ***,SensFL integrates regularization of the sensitivity.of embeddings to the original data into the model training process,effectively.limiting the information contained in shared *** reducing the sensitivity.of embeddings to the original data,SensFL can effectively.resist reverse privacy.attacks and prevent the reconstruction of the original data from the *** experiments were conducted on four distinct datasets and three different models to demonstrate the efficacy.of *** results show that SensFL can effectively.mitigate privacy.inference attacks while maintaining the accuracy.of the primary.learning *** results underscore SensFL’s potential to advance privacy.protection technologies within VFL-based intelligent railway.sy.tems,addressing critical security.concerns in collaborative learning environments.

关键词： Vertical federated learning privacy defenses

Identify.ng the dy.amic behaviors in complete reconstruction of Co-based complex precataly.ts during electrocataly.ic oxy.en evolution

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy.Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Dany.ng Wu Linke cai y.uluan Lu Fanpeng Cheng Lijuan Shi Qun y. y.o Liu y. Huang Key.Laboratory.of Green Chemical Engineering Process of Ministry.of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology School of Chemical Engineering & Pharmacy Wuhan Institute of Technology Key.Laboratory.of Pesticide & Chemical Biology.of Ministry.of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of Education College of Chemistry Central China Normal University College of Materials Science and Engineering Fuzhou University

Transition metal-based nanomaterials have emerged as promising electrocataly.ts for oxy.en evolution reaction（OER）. Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER process. However, most of them undergo incomplete reconstruction with limited thickness of reconstruction lay.r, leading to low component utilization and arduous exploration of real cataly.ic mechanism. Herein, we identify.the dy.amic behaviors in complete reconstruction of Co-based complexes during OER. The hollow phy.ic acid（PA） cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electroly.e penetration and mass transport ability. in favor of the fast and complete reconstruction. A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by.OH-to form Co（Fe）(OH)xand subsequent potential-driven oxidation to Co（Fe）OOH. The obtained CoFeOOH delivers a low overpotential of 290 mV at a current density.of 10 mA cm-2and a long-term *** experiment results together with theory.calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER activity. The work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocataly.ts.

关键词： Complete reconstruction Co-based complex Precataly.ts Oxy.en evolution reaction