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Synthesis of Nanostructured Copper-doped Titania and Its Properties

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Nano-Micro Letters 2013年第1期5卷 26-33页

作者： Oman Zuas Harry budiman Research Center for Chemistry (RCChem) Indonesian Institute of Sciences (LIPI)Kawasan PUSPIPTEK Serpong

Nanostructured pure-Ti O_2 and Cu3%-Ti O_2 were successfully synthesized via co-precipitation method. The X-ray diffraction(XRD) result proves that the synthesized sample were predominantly in anatase phase with size in the range of 8～16 nm, which are in good agreement with the transmission electron microscopy data. Owing to doping of copper, not only did the thermal stability of the Ti O_2 decrease, but also a significant decrease in its particle size and a shift of the adsorption edge to a higher wavelength region appear. The activity of both pure-Ti O_2 and Cu3%-doped Ti O_2 was tested to study their ability to decolorize congo red(CR) dye in aqueous solution. We observed that the CR dye was decolorized faster by Cu3%-Ti O_2 than pure-Ti O_2. Results of this study demonstrate a potential application of the synthesized sample for decolorizing dye pollutants from aqueous waste.

关键词： Nanostructure Copper Titania Decolorization Congo red

Robust triboelectric information-mat enhanced by multi-modality deep learning for smart home

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InfoMat 2023年第1期5卷 139-160页

作者： Yanqin Yang Qiongfeng Shi Zixuan Zhang Xuechuan Shan budiman Salam Chengkuo Lee Department of Electrical and Computer Engineering National University of SingaporeSingaporeSingapore Center for Intelligent Sensors and MEMS(CISM) National University of SingaporeSingaporeSingapore National University of Singapore Suzhou Research Institute(NUSRI) SuzhouPeople's Republic of China Singapore Institute of Manufacturing Technology and National University of Singapore(SIMTech-NUS)Joint Lab on Large-area Flexible Hybrid Electronics National University of SingaporeSingaporeSingapore Printed Intelligent Device Group Singapore Institute of Manufacturing TechnologyAgency for ScienceTechnology and Research(A*STAR)SingaporeSingapore NUS Graduate School-Integrative Sciences and Engineering Programme(ISEP) National University of SingaporeSingaporeSingapore

In metaverse,a digital-twin smart home is a vital platform for immersive communication between the physical and virtual *** nanogenerators(TENGs)sensors contribute substantially to providing smart-home ***,TENG deployment is hindered by its unstable out-put under environment ***,we develop a digital-twin smart home using a robust all-TENG based information mat(InfoMat),which consists of an in-home mat array and an entry *** interdigital electrodes design allows environment-insensitive ratiometric readout from the mat array to can-cel the commonly experienced environmental *** position sensing is also achieved because of the interval arrangement of the mat ***,the two-channel entry mat generates multi-modality informa-tion to aid the 10-user identification accuracy to increase from 93% to 99% compared to the one-channel ***,a digital-twin smart home is visualized by real-time projecting the information in smart home to virtual reality,including access authorization,position,walking trajectory,dynamic activities/sports,and so on.

关键词： digital twin environment-insensitive multi-modality deep learning scalability smart home triboelectric information-mat

The Effects of Anterior Chamber Depth to Endothelial Cell Loss Using Tranversal Phacoemulsification

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Open Journal of Ophthalmology 2021年第3期11卷 240-248页

作者： budiman Department of Ophthalmology Faculty of Medicine Universitas Padjadjaran Bandung Indonesia Cataract and Refractive Surgery Unit Cicendo National Eye Center Bandung Indonesia

Background: Phacoemulsification surgery is the most frequent cataract surgery performed in developed countries because of its effectiveness and safety. However, some degree of endothelial loss is inevitable in any type of cataract surgery, including phacoemulsification. Anterior chamber depth (ACD) could be considered as one of important anatomical parameters for preserving endothelial loss from the mechanical and thermal damage that can occur during the procedure. Purpose: To evaluate the effects of ACD on endothelial cell density, hexagonality, coefficient variation (CV) and central corneal thickness (CCT) at one and four weeks after phacoemulsification using transversal ultrasound. Method: This was a prospective study conducted at Cicendo National Eye Hospital Indonesia from April to August 2018, where we performed phacoemulsification in 148 patients with ACD Result: Mean (SD) endothelial density in ACD Conclusion: Endothelial cell density in ACD < 3 mm group was significantly lower compared to ACD ≥ 3 mm group at 1-week and 4-week evaluation after phacoemulsification.

关键词： Anterior Chamber Depth Endothelial Cell Cataract Phacoemulsification

Emergency evacuation system for mines

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Journal of Coal Science & Engineering(China) 2011年第3期17卷 281-284页

作者： QIAN Qing-yi budiman Jeff SHEN Jay Department of Civil Architecture ＆ Environmental Engineering Illinois Institute of Technology Chicago 1L60616 USA

There are many potential hazards in the underground mining these include fire, explosion, inundation, roof collapse, toxic gases, chemical pollution, etc. Over past centuries, in US alone, more than 100 000 miners lost their life in different accidents. The primary safety methods used in underground mines concentrate on the monitoring of the hazardous gases, fire detection and ventilation. Using advanced instruments and monitoring techniques have significantly reduced the accidents in the modem mines. However despite the advancement of these monitoring facilities, accidents still occur in underground mining annually in the world, and many miners were killed because they were trapped and unable to escape due to blocked of exit access. Described a new development for the emergency evacuation system in underground mines and analyzed the advantages and disadvantages of the system. It is expected that the new system will greatly improve the emergency exit methods and save more lives in the future.

关键词： evacuation system mine shaft elevators shaft lining

Safety and Efficacy of Artisan Aphakia Iris-Claw Intraocular Lens in Tertiary Hospital in Indonesia

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Open Journal of Ophthalmology 2021年第1期11卷 25-35页

作者： Emmy Dwi Sugiarti Azalia Latuasan Andrew M. H. Knoch budiman budiman Cataract and Refractive Surgery Unit National Eye Centre Cicendo Eye Hospital Bandung Indonesia Ophtalmology Department Faculty of Medicine Universitas Padjadjaran Bandung Indonesia

Introduction: Iris-claw Intraocular Lens (IOL) is one of the alternatives to correct aphakia without sufficient capsular support. This technique is preferred because it has a simple procedure. Iris-claw IOL was originally designed to be fixated on the anterior chamber. The use of retropupillary fixation is increasing because the location is more physiologic and it shows less risk to corneal endothelial damage. Purpose: To describe safety and efficacy of iris-claw Artisan IOL in correcting aphakia without sufficient capsular support. Methods: This is a descriptive retrospective study of patients with aphakic iris-claw Artisan IOL implantation in National Eye Center Cicendo Eye Hospital, Indonesia from July 2017-July 2019. Patients were divided into prepupillary and retropupillary group. The Uncorrected Visual Acuity (UCVA), Best-Corrected Visual Acuity (BCVA), Safety Index (SI), Efficacy Index (EI), and complications were recorded. The procedure is safe if SI value ≥ 1.0 and effective if EI value ≥ 1.0. Results: There were 54 eyes in the retropupilary group and 17 eyes in the prepupillary group. In the prepupillary group, there were 94.11% eyes with SI ≥ 1.0, the mean SI was 1.79 ± 1.02, 50% of eyes with EI ≥ 1.0, and the mean EI was 0.77 ± 0.20. In the retropupillary group, there were 96.29% eyes with SI ≥ 1.0, the mean SI was 2.49 ± 2.23, 74.07% of eyes with EI ≥ 1.0, and the mean EI was 1.75 ± 1.64. Postoperative UCVA and BCVA were improved significantly compared to preoperative visual acuity in both groups (p Conclusion: Prepupillary and retropupillary iris-claw IOL implantation are safe. Retropupillary fixation technique is more effective in improving visual acuity.

关键词： Iris-Claw Aphakia Safety Index Efficacy Index

Growth of GaN Thin Film by Pulsed Laser Deposition and Its Application on Ultraviolet Detectors

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材料科学与工程（中英文A版） 2011年第3X期1卷 336-341页

作者： Dadi Rusdiana Maman budiman Mochamad Barmawi Department of Physics Indonesia University of Education Jl. DR. Setia Budi 229 Bandung Indonesia Laboratory of Electronic Material Physics Department of Physics Bandung Institute of Technology Jl. Ganesha 10 BandungIndonesia

Crystalline GaN films were grown on (0001) sapphire substrates in atmospheres of nitrogen by pulsed laser deposition. The properties of GaN thin films were improved by increasing the growth temperature to 680 oC and the nitrogen flow rate during growth to 150 sccm. The GaN film grown at 680 oC in 100 sccm of nitrogen had a wurtzite structure with (0002) and (0004) orientations. The GaN film had an n-type carrier concentration of 1.5 × 1019 cm-3 and the electron mobility of 19.05 cm2/V·sec. The ultraviolet detector based on GaN grown on (0001) sapphire was fabricated and characterized. The current responsivity increase at λ >310 nm and remain reasonably flat for photons with wavelength from 347 nm to 366 nm.

关键词： GaN薄膜脉冲激光沉积紫外探测器薄膜生长应用纤锌矿结构载流子浓度电子迁移率

多土壤信息测量传感器的硬件系统集成设计(英文)

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农业工程学报 2010年第4期26卷 156-161页

作者：马瑞峻 Michael Short Craig Lobsey Alex McBramey Brett Whelan budiman Minasny 孙光永华南农业大学工程学院广州510642 华南农业大学南方农业机械与装备关键技术省部共建教育部重点实验室广州510642 澳大利亚精确农业中心农业、食品与自然资源学院悉尼大学新南威尔士2006 湖南大学汽车车身先进设计制造国家重点实验室长沙410082

土壤在作物的生长过程中起到了重要的作用,所以对于基于决策的作物生产管理,土壤信息是必需的。传统的土壤取样获取土壤信息技术耗时且成本高,尤其是对于大规模农田土壤信息测量。目前一些近地面的可连续测量的土壤信息传感器技术能够... 详细信息

土壤在作物的生长过程中起到了重要的作用,所以对于基于决策的作物生产管理,土壤信息是必需的。传统的土壤取样获取土壤信息技术耗时且成本高,尤其是对于大规模农田土壤信息测量。目前一些近地面的可连续测量的土壤信息传感器技术能够提供高精度的数字土壤信息地图,然而这些商业化的技术成熟的传感器通常需要单独使用。该文提出了将γ射线光谱仪GR320、利用电磁感应原理的EM38和EM31以及Veris3100和VerispH这些可在农田近地面连续测量的土壤特性测试传感仪器集成在一起同时使用的方案,介绍了此集成系统的硬件设备和相关特性参数以及今后需要继续研究解决的问题。利用该系统可一次获得不同的土壤特性参数数据,如土壤矿物质含量,不同深度的土壤电导率值和土壤pH值等,可避免多次测量车辆行走对土壤的压实。多传感器数据之间的互相补充可以进一步提高且更有利于精确农业中基于土壤信息的决策规划。该系统适用于大面积农田土壤特性测量。

关键词：传感器硬件土壤精确农业

Soil bacterial depth distribution controlled by soil orders and soil forms

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Soil Ecology Letters 2022年第1期4卷 69-77页

作者： Peipei Xue Alex B.McBratney budiman Minasny Tony O'Donnell Vanessa Pino Mario Fajardo Wartini Ng Neil Wilson Rosalind Deaker School of Life and Environmental Sciences The University of SydneyNSW 2015Australia Sydney Institute of Agriculture NSW 2006Australia Faculty of Science The University of Western AustraliaWA 6009Australia

Human disturbances to soils can lead to dramatic changes in soil physical,chemical,and biological *** influence of agricultural activities on the bacterial community over different orders of soil and at depth is still not well *** used the concept of genoform and phenoform to investigate the vertical(down to 1 m depth)soil bacterial community structure in paired genosoils(undisturbed forests)and phenosoils(cultivated vineyards)in different soil *** study was conducted in the Hunter Valley area,New South Wales,Australia,where samples were collected from 3 different soil orders(Calcarosol,Chromosol,and Kurosol),and each soil order consists of a pair of genosoil and *** bacterial community structure was analyzed using highthroughput sequencing of 16S *** showed that bacterial-diversity decreased with depth in phenosoils,however,the trend is less obvious in genoform *** diversity was greater in phenosoils than genosoils,but the trend was reversed in ***,cropping not only affected topsoil bacteria community but also decreased its diversity in the *** community in topsoils was influenced by both soil orders and soil forms,however,in subsoils it was more impacted by soil *** Analysis of Principal Coordinates revealed that cropping increased the similarity of bacterial structures of different soil *** study highlighted the strong influence of agricultural activities on soil microbial distribution with depth,which is controlled by soil order.

关键词： Bacterial distribution Soil depth Soil forms/land use Genosoil and phenosoil Soil type/soil order

A Cross Entropy-Genetic Algorithm for m-Machines No-Wait Job-ShopScheduling Problem

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Journal of Intelligent Learning Systems and Applications 2011年第3期3卷 171-180页

作者： Budi Santosa Muhammad Arif budiman Stefanus Eko Wiratno 不详

No-wait job-shop scheduling (NWJSS) problem is one of the classical scheduling problems that exist on many kinds of industry with no-wait constraint, such as metal working, plastic, chemical, and food industries. Several methods have been proposed to solve this problem, both exact (i.e. integer programming) and metaheuristic methods. Cross entropy (CE), as a new metaheuristic, can be an alternative method to solve NWJSS problem. This method has been used in combinatorial optimization, as well as multi-external optimization and rare-event simulation. On these problems, CE implementation results an optimal value with less computational time in average. However, using original CE to solve large scale NWJSS requires high computational time. Considering this shortcoming, this paper proposed a hybrid of cross entropy with genetic algorithm (GA), called CEGA, on m-machines NWJSS. The results are compared with other metaheuritics: Genetic Algorithm-Simulated Annealing (GASA) and hybrid tabu search. The results showed that CEGA providing better or at least equal makespans in comparison with the other two methods.

关键词： No-Wait Job Shop Scheduling Cross Entropy Genetic Algorithm Combinatorial Optimization