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Science China(Information Sciences) 2023年第2期66卷 237-249页

作者： Mingyi CHEN Luominghao PAN Qiuyang LIN Longlong CHENG Dong MING Department of Micro/Nano Electronics Shanghai Jiao Tong University IMEC China Electronic Cloud Brain (Tianjin) Technology Co. Ltd. Neural Engineering & Rehabilitation Engineering Laboratory Tianjin University

The application of wireless power and data telemetry to implantable medical devices(IMDs)has grown dramatically in recent decades. Achieving a high data rate and high-power transmission efficiency(pte) over the same inductive link remains challenging. This paper presents a power and data telemetry circuit over a single 13.56 MHz inductive link. On the transmitter(TX) side, a binary-phase-shift keying(BPSK) modulation based on a Class-E amplifier that features a high modulation rate and a high quality(Q)-factor is proposed. A digital-assisted phase-locked-loop(PLL) is proposed on the receiver(RX) side as a BPSK demodulator to handle the long settling process. The maximum data rate can be extended to 1/4 of the carrier frequency. The prototype has been fabricated with a 180 nm BCD(Bipolar-CMOS-DMOS)process. The measurement shows that up to 31.25 mW of power can be delivered simultaneously with 3.39-Mbps of data transmission, while a 2×10-7bit-error-rate(BER) can be ensured over a transmission distance of 5 mm. The peak pte is 70%, whereas the RX energy efficiency is 183 p J/bit. The results demonstrate the potential of the proposed techniques in applications to various biomedical implants with intensive bandwidth and energy efficiency requirements.

关键词： power and data telemetry inductive link implantable medical device (IMD) brain-computer interface (BCI) phase-locked-loop (PLL) binary-phase-shift keying (BPSK) power transfer efficiency (pte)

Cationic surfactants-history,production and applications

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Cationic surfactants-history,production and applications

一种用于GPS接收机中的自适应A/D转换器

2004（第八届）国际表面活性剂和洗涤剂会议

作者： Jimmy Zhao Akzo Nobel Surface Chemistry pte ltd.Singapore

＜正＞The historic development of cationic surfactants based fatty acids is reviewed. The manufacturing technology used to create fatty amine based surfactants will be discussed, with focus the discovery made by Mr. R... 详细信息

关键词： cationic surfactants history application

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微电子学 2007年第3期37卷 378-381页

作者：段静波曹奉祥李永明张春 Seeteck Tan 清华大学微电子学研究所北京100084 O2Micro pte ltd. Singapore

基于SMIC 0.18μm工艺,设计了一个2位自适应A/D转换器。设计中,采用新的2位结构和充电电流可调电荷泵,使其不但对连续波干扰可起到很好的抑制作用,改善转换器在高斯噪声环境中的转换增益,而且可以抑制不同强度的连续波干扰。仿真结果表... 详细信息

基于SMIC 0.18μm工艺,设计了一个2位自适应A/D转换器。设计中,采用新的2位结构和充电电流可调电荷泵,使其不但对连续波干扰可起到很好的抑制作用,改善转换器在高斯噪声环境中的转换增益,而且可以抑制不同强度的连续波干扰。仿真结果表明,其输入动态范围为50 dB,采样带宽为20 MHz,可满足GPS应用的要求。该电路已应用在BPSK调制的直接扩频GPS接收机中。

关键词：自适应A/D转换器 GPS接收机扩频通信连续波干扰

Development of New Modality Municipal Public Transportation for Guangzhou——Group Rapid Transit System as Supplementary Linkage from Guangzhou City Center to its Eastern Tourism Zone

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Frontiers of Engineering Management 2015年第4期2卷 378-390页

作者： Ru-jiang Zhao Wung Hee Moh The Construction Command Center of Sino-Singapore Guangzhou Knowledge City Singbridge Corporation pte ltd

As one of the primary business centers of China, Guangzhou has been undergoing rapid growth and expansion. Over the past decade, the Guangzhou Municipality Government has significantly upgraded its transport infrastructure, especially with the highly beneficial expansion of its Subway Mass Rapid Transit(MRT) *** steps have also been taken to continue planning the construction of new roads, a Bus Rapid Transit(BRT)system and other transportation facilities. Further administrative and regulatory measures have also been implemented to control the situation, such as the banning of motorcycles from the central city area and the limitation of new automobile registrations. However, Guangzhou continues to face serious challenges of traffic congestion in and around the city center owing to further intensification of its population with economic growth. The need to ease Guangzhou's stretched public transportation resources,and at the same time to support the realization of its"Eastward Advance" strategy, presents a unique challenge and opportunity to develop an advanced high-efficiency public transportation modality for Guangzhou, viz. the Group Rapid Transit(GRT) involving the use of automation-guided(driverless) smart-vehicles. This paper outlines the PRT/GRT(PRT: Personal Rapid Transit) smart-vehicle modality and also puts forth a proposal of Guangzhou's first GRT route as the city's first dedicated transportation link to the scenic landscape of the Eastern Tourism *** GRT route will help in diffusing the city's traffic congestion as well as support the effectuation of Guangzhou's "Eastern Expansion" strategy, supplementing the ongoing expansion of the Guangzhou Municipality's subway MRT networks.

关键词： public transportation system innovative city transportation Subway Mass Rapid Transit(MRT) Bus Rapid Transit(BRT) Group Rapid Transit(GRT) Personal Rapid Transit(PRT)

Value Management Practices on Major Construction Projects and Green Building

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Frontiers of Engineering Management 2016年第2期3卷 147-157页

作者： Ru-jiang Zhao Wung Hee Moh The Construction Command Center of Sino-Singapore Guangzhou Knowledge City Singbridge Corporation pte ltd

The paper starts with background information on value management(VM) in the construction industry and current development situation of the green building industry, and costs and profitability of green buildings. The paper continues with detailed analyses of the findings,covering new developments and perceptions of VM, and applications of VM in the industry. The paper also reports case studies on the practices adopted in the planning and design management phase of SIPO Guangdong Patent Examination Cooperation Center and in the construction management phase of Guangzhou International Bio-Island Standard Property Unit II project. As revealed by the practices, the value-adds and savings in construction costs through the application of VM are important for the developers, and the contributions of VM application in green building projects are significant to achieving the expected targets and to resolving the design and construction challenges encountered in the development of green building industry. And the paper presents, findings on how VM can improve construction management and coordination of several ongoing construction projects and on how VM can be systematically implemented by phases, and discussions on other potential benefits of using VM systems.

关键词： value management(VM) VM theory and practices Chinese construction industry green buildings

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创新的负压混合装置暨粉尘过滤系统

煤矿安全 2009年第B11期40卷 86-87页

作者：许盟来 Air Water Treatment Technologles pte ltd 新加坡669010

分析了现有气体过滤系统的现状和存在问题,提出了创新型粉尘过滤系统,并介绍了其原理方法及技术指标。

关键词：粉尘过滤系统负压混合装置

Efficacy and safety of ranibizumab for wet age-related macular degeneration in Chinese patients

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International Journal of Ophthalmology(English edition) 2017年第1期10卷 91-97页

作者： Hui-Jun Qi Xiao-Xin Li Jun-Yan Zhang Ming-Wei Zhao Department of Ophthalmology People's HospitalPeking UniversityBeijing 100044China Clinical Study Consultant Bothwin Pte.Ltd.Shanghai 200232China Branch of Clinical Epidemiology and Evidence-Based Medicine Shanghai Medical AssociationShanghai 200240China

AIM： To evaluate the clinical efficacy and safety of ranibizumab for wet age-related macular degeneration （wAMD） in Chinese patients and to determine the mean number of injections administered over one year of follow-up. METHODS： This single centre, retrospective observational case series study included data from 121 patients with wAMD （121 eyes） who were diagnosed by indirect ophthalmoscopy, fluorescence fundus angiography （FFA）, indocyanine green angiography, and optical coherence tomography. Ranibizumab was injected into the vitreous cavities once per month for 3mo and as needed afterwards. Changes in visual acuity and central foveal thickness （CFT） during the follow-up period were compared, and the mean number of injections over the year was calculated. Patients with one or more adverse events related to the drugs and injections were recorded for further adverse events ***： The study population included 70 males and 51 females aged between 50 and 87y （mean： 71.32±9.41y）. The mean number of injections over the first year was 5±1 （range： 3-9）. The mean best-corrected visual acuity by Early Treatment Diabetic Retinopathy Study increased from 43.2±19.3 （95%CI： 39.8-46.7） at baseline to 51.7±20.1 （95%CI： 48.1-55.3）, and central foveal thickness （CFT） decreased from 526.5±277.0 μm （95%CI： 476.6-576.4） to 258.2±161.6 μm （95%CI： 229.2-287.3） at 12mo. The differences were statistically significant （P〈0.001）. Visual acuity significantly improved in 34.1% of the patients （38 eyes）, stabilized in 66.1% of the patients （80 eyes）, and significantly decreased in 2.5% of the patients （3 eyes）. CFT at baseline was an independent risk factor of decreased CFT and increased visual acuity. None of the patients had severe adverse events during the follow-up ***： Ranibizumab can effectively control disease progression and improve visual acuity in patients with wAMD. The disease conditions of most patients stabilized after a one-year treatment with an average

关键词： antiangiogenic drug ranibizumab wet age-relatedmacular degeneration fluorescence fundus angiography indocyanine green angiography optical coherence tomography visual acuity central foveal thickness

Ultimate Strength of Completely Overlapped Joint for Fixed Offshore Wind Turbine Jacket Substructures

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Journal of Marine Science and Application 2019年第1期18卷 99-113页

作者： Wie Min Gho Ye Yang Maritime Production Research pte.ltd School of Civil and Environmental Engineering Nanyang Technological University Global Maritime Consultancy ltd

This paper presents an innovative eccentric jacket substructure for offshore wind turbines to better withstand intense environmental forces and to replace conventional X-braced jackets in seismically active areas. The proposed eccentric jacket comprises of completely overlapped joint at every joint connection. The joint consists of a chord and two braces in a single plane. The two braces are fully overlapped with a short segment of the diagonal brace welded directly onto the chord. The characteristic feature of this joint configuration is that the short segment member can be designed to absorb and dissipate energy under cyclic load excitation. The experimental and numerical study revealed that the completely overlapped joint performed better in terms of strength resistance, stiffness, ductility, and energy absorption capacity than the conventional gap joints commonly found in typical X-braced jacket framings. The eccentric jacket could also be designed to becoming less stiff, with an inelastic yielding and local buckling of short segment member, so as to better resist the cyclic load generated from intense environmental forces and earthquake. From the design economics, the eccentric jacket provided a more straightforward fabrication with reduced number of welded joints and shorter thicker wall cans than the conventional X-braced jacket. It can therefore be concluded based on the results presented in the study that by designing the short segment member in accordance with strength and ductility requirement,the eccentric jacket substructure supporting the wind turbine could be made to remain stable under gravity loads and to sustain a significantly large amount of motion in the event of rare and intense earthquake or environmental forces, without collapsing.

关键词： Offshore wind turbine Jacket substructure Eccentric jacket Completely overlapped joint Ultimate strength Cyclic loading Ductility Energy absorption

High-Energy Batteries:Beyond Lithium-Ion and Their Long Road to Commercialisation

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Nano-Micro Letters 2022年第6期14卷 116-164页

作者： Yulin Gao Zhenghui Pan Jianguo Sun Zhaolin Liu John Wang Department of Materials Science and Engineering National University of SingaporeSingapore 117574Singapore ST Engineering Advanced Material Engineering pte.ltd. Singapore 619523Singapore Institute of Materials Research and Engineering Agency for ScienceTechnology and Research(A*STAR)Singapore 138634Singapore School of Materials Science and Engineering Tongji UniversityShanghai 201804China

Rechargeable batteries of high energy density and overall performance are becoming a critically important technology in the rapidly changing society of the twenty-first *** lithium-ion batteries have so far been the dominant choice,numerous emerging applications call for higher capacity,better safety and lower costs while maintaining sufficient *** design space for potentially better alternatives is extremely large,with numerous new chemistries and architectures being simultaneously *** include other insertion ions(*** and numerous multivalent ions),conversion electrode materials(***,metallic anodes,halides and chalcogens)and aqueous and solid ***,each of these potential“beyond lithium-ion”alternatives faces numerous challenges that often lead to very poor cyclability,especially at the commercial cell level,while lithium-ion batteries continue to improve in performance and decrease in *** review examines fundamental principles to rationalise these numerous developments,and in each case,a brief overview is given on the advantages,advances,remaining challenges preventing cell-level implementation and the state-of-the-art of the solutions to these ***,research and development results obtained in academia are compared to emerging commercial examples,as a commentary on the current and near-future viability of these“beyond lithium-ion”alternatives.

关键词： High energy density Beyond lithium-ion batteries Multivalent-ion batteries Conversion electrode materials Electrolyte

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非饱和土地基振动响应分析

振动与冲击 2019年第12期38卷 182-190,212页

作者：李伟华王文强北京交通大学土木建筑工程学院 100044 Geo Application Engineers pte ltd 367903Singapore

非饱和介质波动理论的发展,使得非饱和土地基动力响应问题求解成为可能。根据现有的非饱和多孔介质动力方程,采用解耦技术,建立非饱和多孔介质动力反应分析的显式有限元分析方法,并编制相关计算程序。通过与已有解析解的对比,验证了方... 详细信息

非饱和介质波动理论的发展,使得非饱和土地基动力响应问题求解成为可能。根据现有的非饱和多孔介质动力方程,采用解耦技术,建立非饱和多孔介质动力反应分析的显式有限元分析方法,并编制相关计算程序。通过与已有解析解的对比,验证了方法及程序的正确性和精度。利用该方法,分别分析了刚性基础与柔性基础条件下非饱和土地基振动问题,重点讨论了饱和度对非饱和土地基振动响应的影响,结果表明:刚性基础条件下地基的振动响应大于相同条件下柔性基础地基振动响应;土体饱和度Sr=1时地基各点振动比Sr<1时明显减小;刚性基础条件下,Sr<1时,随着饱和度增加各点竖向位移减小,水平位移增大,而柔性基础条件下,Sr<1时,饱和度对地基各点振动的影响有限。

关键词：非饱和多孔介质地基振动显式有限元