|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Dust dispersion and management in underground mining faces显示文摘Presence of fine dust in air causes serious health hazard for mine operators resulting in such serious problems as coal workers’pneumoconiosis and silicosis.Major sources of dust appear of course along the mining face where the minerals are extracted.Proper control and management are required to ensure safe working environment in the mine.Here,we utilize the computational fluid dynamic(CFD)approach to evaluate various methods used for mitigating dust dispersion from the mining face and for ensuring safe level of dust concentration in the mine tunnel for safety of the operators.The methods used include:application of blowing and exhaust fans,application of brattice and combination of both.The results suggest that among the examined methods,implementation of appropriately located brattice to direct the flow from the main shaft to the mining face is the most effective method to direct dust particles away from the mining face. | Kurnia Jundika Candra Sasmito Agus Pulung Mujumdar Arun Sadashiv | 2014 | International Journal of Mining Science and Technology2014，24，1： | 39 |
| 2 | Prediction of air flow, methane, and coal dust dispersion in a room and pillar mining face显示文摘In underground coal mines, uncontrolled accumulation of methane and fine coal dust often leads to serious incidents such as explosion. Therefore, methane and dust dispersion in underground mines is closely monitored and strictly regulated. Accordingly, significant efforts have been devoted to study methane and dust dispersion in underground mines. In this study, methane emission and dust concentration are numerically investigated using a computational fluid dynamics(CFD) approach. Various possible scenarios of underground mine configurations are evaluated. The results indicate that the presence of continuous miner adversely affects the air flow and leads to increased methane and dust concentrations.Nevertheless, it is found that such negative effect can be minimized or even neutralized by operating the scrubber fan in suction mode. In addition, it was found that the combination of scrubber fan in suction mode and brattice results in the best performance in terms of methane and dust removal from the mining face. | Lu Yueze Akhtar Saad Sasmito Agus P. Kurnia Jundika C. | 2017 | International Journal of Mining Science and Technology2017，27，4： | 10 |
| 3 | 有无椎间支撑的侧方腰椎椎体间融合术应用单双侧椎弓根螺钉固定的生物力学稳定性比较显示文摘侧方腰椎椎体间融合术(Lateral lumbar interbody fusion,LLIF)是侧方入路的微创腰椎间融合手术,在不损伤腰背部肌肉、韧带和小关节的同时,可置入体积更大的椎体间融合器。由于椎间盘切除后仅置入椎体间融合器难以提供足够的稳定性,因此LLIF术中多采用单侧椎弓根螺钉(unilateral pediclescrews,UPS)或双侧椎弓根螺钉(bilateral pedicle screws,BPS)来加强稳定性。本研究旨在探讨UPS或BPS固定是否能为LLIF提供更好的生物力学稳定,同时比较两种固定方式的稳定性差异。 | Godzik J Martinez-Del-Campo E Newcomb AGUS 梁达轩 吴增晖 | 2018 | 中国骨科临床与基础研究杂志2018，10，5： | 10 |
| 4 | Design and Implementation of Paired Pectoral Fins Locomotion of Labriform Fish Applied to a Fish Robot显示文摘In present,there are increasing interests in the research on mechanical and control system of underwater vehicles.Theseongoing research efforts are motivated by more pervasive applications of such vehicles including seabed oil and gas explorations,scientific deep ocean surveys,military purposes,ecological and water environmental studies,and also entertainments.However,the performance of underwater vehicles with screw type propellers is not prospective in terms of its efficiency andmaneuverability.The main weaknesses of this kind of propellers are the production of vortices and sudden generation of thrustforces which make the control of the position and motion difficult.On the other hand,fishes and other aquatic animals are efficient swimmers,posses high maneuverability,are able to followtrajectories,can efficiently stabilize themselves in currents and surges,create less wakes than currently used underwater vehicle,and also have a noiseless propulsion.The fish’s locomotion mechanism is mainly controlled by its caudal fin and paired pectoralfins.They are classified into Body and/or Caudal Fin(BCF)and Median and/or paired Pectoral Fins(MPF).The study of highlyefficient swimming mechanisms of fish can inspire a better underwater vehicles thruster design and its mechanism.There are few studies on underwater vehicles or fish robots using paired pectoral fins as thruster.The work presented in thispaper represents a contribution in this area covering study,design and implementation of locomotion mechanisms of pairedpectoral fins in a fish robot.The performance and viability of the biomimetic method for underwater vehicles are highlightedthrough in-water experiment of a robotic fish. | Patar Ebenezer Sitorus Yul Yunazwin Nazaruddin Edi Leksono Agus Budiyono | 2009 | Journal of Bionic Engineering2009，6，1： | 10 |
| 5 | Differential regulation of protein synthesis in skeletal muscle and liver of neonatal pigs by leucine through an mTORC1-dependent pathway显示文摘Neonatal growth is characterized by a high protein synthesis rate that is largely due to an enhanced sensitivity to the postprandial rise in insulin and amino acids, especially leucine. The mechanism of leucine's action in vivo is not well understood. In this study, we investigated the effect of leucine infusion on protein synthesis in skeletal muscle and liver of neonatal pigs. To evaluate the mode of action of leucine, we used rapamycin, an inhibitor of mammalian target of rapamycin (mTOR) complex-1 (mTORC1). Overnight-fasted 7-day-old piglets were treated with rapamycin for 1 hour and then infused with leucine (400 μmol·kg -1 ·h -1 ) for 1 hour. Leucine infusion increased the rate of protein synthesis, and ribosomal protein S6 kinase 1 (S6K1) and eukaryotic initiation factor (eIF) 4E-binding protein-1 (4E-BP1) phosphorylation in gastrocnemius and masseter muscles (P < 0.05), but not in the liver. The leucine-induced stimulation of protein synthesis and S6K1 and 4E-BP1 phosphorylation were completely blocked by rapamycin, suggesting that leucine action is by an mTORC1-dependent mechanism. Neither leucine nor rapamycin had any effect on the activation of the upstream mTORC1 regulators, AMP-activated protein kinase and protein kinase B, in skeletal muscle or liver. The activation of eIF2a and elongation factor 2 was not affected by leucine or rapamycin, indicating that these two pathways are not limiting steps of leucine-induced protein synthesis. These results suggest that leucine stimulates muscle protein synthesis in neonatal pigs by inducing the activation of mTORC1 and its downstream pathway leading to mRNA translation. | Agus Suryawan Hanh V Nguyen Rosemarie D Almonaci Teresa A Davis | 2012 | Journal of Animal Science and Biotechnology2012，3，1： | 9 |
| 6 | An overview of 10-year observation of the South China Sea branch of the Pacific to Indian Ocean throughflow at the Karimata Strait显示文摘Besides the Indonesian throughflow(ITF), the South China Sea throughflow(SCSTF) also contributes to the water transport from the Pacific to the Indian Ocean. However, this South China Sea(SCS) branch at the Karimata Strait is poorly observed until 2007, even though its importance has been suggested by numerical studies for decades. In this paper, we review the nearly 10-year field measurement in the Karimata Strait by the execution of the projects of 'SCS-Indonesian Seas Transport/Exchange(SITE) and Impacts on Seasonal Fish Migration' and 'The Transport, Internal Waves and Mixing in the Indonesian Throughflow regions(TIMIT) and Impacts on Marine Ecosystem', which extend the observations from the western Indonesian seas to the east to include the main channels of the ITF, is introduced. Some major achievements from these projects are summarized. | Zexun Wei Shujiang Li R.Dwi Susanto Yonggang Wang Bin Fan Tengfei Xu Budi Sulistiyo T.Rameyo Adi Agus Setiawan A.Kuswardani Guohong Fang | 2019 | Acta Oceanologica Sinica2019，38，4： | 9 |
| 7 | 支气管哮喘与过敏性鼻炎相关性研究进展显示文摘 | 潘珊珊 Agus H Hutagalung 刘恩梅 | 2009 | 儿科药学杂志2009，15，1： | 8 |
| 8 | Optimal Tracking Controller Design for a Small Scale Helicopter显示文摘A model helicopter is more difficult to control than its full scale counterpart. This is due to its greater sensitivity to control inputs and disturbances as well as higher bandwidth of dynamics. This work is focused on designing practical tracking controller for a small scale helicopter following predefined trajectories. A tracking controller based on optimal control theory is synthe- sized as a part of the development of an autonomous helicopter. Some issues with regards to control constraints are addressed. The weighting between state tracking performance and control power expenditure is analyzed. Overall performance of the control design is evaluated based on its time domain histories of trajectories as well as control inputs. | Agus Budiyono Singgih S. Wibowo | 2007 | Journal of Bionic Engineering2007，4，4： | 8 |
| 9 | Introduction and evaluation of a novel hybrid brattice for improved dust control in underground mining faces: A computational study显示文摘A proper control and management of dust dispersion is essential to ensure safe and productive underground working environment. Brattice installation to direct the flow from main shaft to the mining face was found to be the most effective method to disperse dust particle away from the mining face. However,it limits the movement and disturbs the flexibility of the mining fleets and operators at the tunnel. This study proposes a hybrid brattice system- a combination of a physical brattice together with suitable and flexible directed and located air curtains- to mitigate dust dispersion from the mining face and reduce dust concentration to a safe level for the working operators. A validated three-dimensional computational fluid dynamic model utilizing Eulerian–Lagrangian approach is employed to track the dispersion of dust particle. Several possible hybrid brattice scenarios are evaluated with the objective to improve dust management in underground mine. The results suggest that implementation of hybrid brattice is beneficial for the mining operation: up to three times lower dust concentration is achieved as compared to that of the physical brattice without air curtain. | Kurnia Jundika C. Sasmito Agus P. Hassani Ferri P. Mujumdar Arun S. | 2015 | International Journal of Mining Science and Technology2015，25，4： | 7 |
| 10 | Experimental investigation on the effects of microwave irradiation on kimberlite and granite rocks显示文摘This study is a part of an overall research project on the effects of microwave(MW)irradiation on rocks for assisted rock breaking systems as well as mineral processing at McGill University.For the first time,this paper highlights a comprehensive investigation on the effects of microwave irradiation on Canadian kimberlites.Potential contribution to the continuous rock excavation and rock weakening effect prior to implementation of mechanical techniques was explored.Two different kimberlite rocks,i.e.volcaniclastic kimberlite(VK)and hypabyssal kimberlite(HK),and granite samples were studied.Some important physical properties of the rock samples were measured including rock quality designation(RQD),specific gravity,porosity,and specific heat capacity.Rock samples were treated for various exposure times using a multi-mode MWunit at different power levels ranging from 2 kW to 15 kW.The effect of MW irradiation on rock samples was investigated.The results indicate that the mechanical properties including unconfined compressive strength(UCS)and Brazilian tensile strength(BTS)were significantly dropped as a result of MWirradiation.Finally,the effect on rock abrasivity using the Cerchar abrasivity index(CAI)has also been discussed. | Samir M.Deyab Hamed Rafezi Ferri Hassani Mehrdad Kermani Agus P.Sasmito | 2021 | Journal of Rock Mechanics and Geotechnical Engineering2021，13，2： | 4 |
| 11 | Regulation of protein degradation pathways by amino acids and insulin in skeletal muscle of neonatal pigs显示文摘Background:The rapid gain in lean mass in neonates requires greater rates of protein synthesis than degradation.We previously delineated the molecular mechanisms by which insulin and amino acids,especially leucine,modulate skeletal muscle protein synthesis and how this changes with development.In the current study,we identified mechanisms involved in protein degradation regulation.In experiment 1,6- and 26-d-old pigs were studied during 1) euinsulinemic-euglycemic-euaminoacidemic,2) euinsulinemic-euglycemic-hyperaminoacidemic,and 3)hyperinsulinemic-euglycemic-euaminoacidemic clamps for 2 h.In experiment 2,5-d-old pigs were studied during1) euinsulinemic-euglycemic-euaminoacidemic-euleucinemic,2) euinsulinemic-euglycemic-hypoaminoacidemichyperleucinemic,and 3) euinsulinemic-euglycemic-euaminoacidemic-hyperleucinemic clamps for 24 h.We determined in muscle indices of ubiquitin-proteasome,i.e.,atrogin-1(MAFbx) and muscle RING-finger protein-1(MuRFI) and autophagy-lysosome systems,i.e.,unc51-like kinase 1(UKL1),microtubule-associated protein light chain 3(LC3),and lysosomal-associated membrane protein 2(Lamp-2).For comparison,we measured ribosomal protein S6(rpS6) and eukaryotic initiation factor 4E(elF4E) activation,components of translation initiation.Results:Abundance of atrogin-1,but not MuRFI,was greater in 26- than 6-d-old pigs and was not affected by insulin,amino acids,or leucine.Abundance of ULK1 and LC3 was higher in younger pigs and not affected by treatment.The LC3-II/LC3-I ratio was reduced and ULK1 phosphorylation increased by insulin,amino acids,and leucine.These responses were more profound in younger pigs.Abundance of Lamp-2 was not affected by treatment or development.Abundance of elF4 E,but not rpS6,was higher in 6- than 26-d-old-pigs but unaffected by treatment.Phosphorylation of elF4 E was not affected by treatment,however,insulin,amino acids,and leucine stimulated rpS6 phosphorylation,and the responses decreased with development.Conclusions:The rapid growth of neonatal muscle is in part due to the positive balance between the activation of protein synthesis and degradation signaling.Insulin,amino acids,and,particularly,leucine,act as signals to modulate muscle protein synthesis and degradation in neonates. | Agus Suryawan Teresa A Davis | 2014 | Journal of Animal Science and Biotechnology2014，5，3： | 4 |
| 12 | Modeling and optimization of Terminalia catappa L.kernel oil extraction using response surface methodology and artificial neural network显示文摘In this study,response surface methodology(RSM)and artificial neural network(ANN)were used to optimize Terminalia catappa L.kernel oil(TCKO)yield.Solvent extraction method was used for the oil extraction,with n-hexane as the extracting solvent.The highest oil yield was obtained at 55℃,150 min,and 0.5 mm.The physicochemical properties of the TCKO were determined using standard methods.Gas chromatographic(GC)analysis and Fourier Transform Infrared(FTIR)were respectively,used to determine the fatty acid composition and prevalent functional groups in TCKO.At optimum conditions of temperature,particle size and extraction time,the RSM predicted oil yield was 62.92%,which was validated as 60.34%,whereas ANN predicted yield was 60.39%,which was validated as 60.40%.The results of the physicochemical characterization of TCKO showed that the dielectric strength(DS),viscosity,flash and pour points values were 30.61 KV,20.29 mm^2 s^−1,260°C,and 3℃,respectively.Physicochemical characterization and FTIR results of TCKOindicated its potential industrial application,especially as transformer fluid.Fatty acids compositions result indicated that the oil was highly unsaturated;while XRD results of Terminalia catappa L.kernel(TCK)samples obtained,both before and after extraction,showed difference in their peaks and corresponding intensities,due to the damage effect of solvent.Finally,the obtained optimization results indicated that ANN was a better and more effective tool than RSM,due to its higher R^2 and lower RMS values. | Chinedu Matthew Agu Matthew Chukwudi Menkiti Ekwe Bassey Ekwe Albert Chibuzor Agulanna | 2020 | Artificial Intelligence in Agriculture2020，，1： | 3 |
| 13 | Freezing on demand: A new concept for mine safety and energy savings in wet underground mines显示文摘The artificial ground freezing(AGF)systems are designed to operate continuously for an extended period of time to control the groundwater seepage and to strengthen the groundwater structure surrounding excavation areas.This mode of operation requires a massive amount of energy to sustain the thickness of the frozen body.Therefore,it is of great interest to propose new concepts to reduce energy consumption while providing sufficient structural stability and safe operation.This paper discusses the principle of the freezing on demand(FoD)by means of experiment and mathematical model.A lab-scale rig that mimics the AGF process is conceived and developed.The setup is equipped with more than 80 thermocouples,flow-meters,and advanced instrumentation system to analyze the performance of the AGF process under the FoD concept.A mathematical model has been derived,validated,and utilized to simulate the transient FoD concept.The results suggest that the overall energy saving notably depends on the coolant’s temperature;the energy saving increases while decreasing the coolant inlet temperature.Moreover,applying the FoD concept in an AGF system leads to a significant drop in energy consumption. | Mahmoud A.Alzoubi Ahmad Zueter Aurelien Nie-Rouquette Agus P.Sasmito | 2019 | International Journal of Mining Science and Technology2019，29，4： | 3 |
| 14 | Evaluation of the heat transfer performance of helical coils of non-circular tubes显示文摘This study addresses heat transfer performance of various configurations of coiled non-circular tubes, e.g., in-plane spiral ducts, helical spiral ducts, and conical spiral ducts. The laminar flow of a Newtonian fluid in helical coils made of square cross section tubes is simulated using the computational fluid dynamic approach. The effects of tube Reynolds number, fluid Prandtl number, coil diameter, etc., are quantified and discussed. Both constant wall temperature and constant heat flux conditions are simulated. The effect of in-plane coil versus a cylindrical design of constant coil, as well as a conical coil design is discussed. Results are compared with those for a straight square tube of the same length as that used to form the coils. Advantages and limitations of using coiled tubes are discussed in light of the numerical results. | Jundika C.KURNIA Agus P.SASMITO Arun S.MUJUMDAR | 2011 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2011，12，1： | 3 |
| 15 | 马来酸单甘油酯钙/锌的制备及在PVC中的应用显示文摘马来酸酐和甘油在1∶1的比例下进行反应,得到中间产物马来酸单甘油酯。中间产物分别与乙酸钙/锌反应,得最终产物马来酸单甘油钙/锌。通过傅立叶红外测试分析了产物的结构。通过刚果红法、热老化法、热失重法、电导率来检测,讨论了其热稳定性能,并和硬脂酸钙/锌进行了对比。通过制酸能力测试,分析了热稳定机理,同时讨论了与β-二酮(硬脂酰苯甲酰甲烷)的协同作用。结果表明,当马来酸单甘油酯钙/锌中的钙、锌比例为2∶1时,有较好的协同作用,初期白度可以达到40 min,静态稳定时间为34 min;与β-二酮复配热稳定性能有明显提升,可以有效地延长热稳定的时间,维持初期白度达50 min,直到80 min仍未黑化。 | 张鸿 蒋平平 AGUS HARYONO 高巍 董玉明 张萍波 | 2019 | 塑料2019，48，6： | 2 |
| 16 | Graphene-and Multi-Walled Carbon Nanotubes-Coated Tapered Plastic Optical Fiber for Detection of Lard Adulteration in Olive Oil显示文摘A rapid and high-performance sensor for lard adulterant in edible oil was developed using the tapered plastic optical fiber(POF)coated with graphene and multi-walled carbon nanotubes.The coating material was deposited onto a tapered POF with a taper waist diameter and a taper length of 0.45 mm and 1 cm,respectively.The addition of the coating material was used to increase the sensitivity and selectivity coefficient of the tapered POF toward the lard substance.The sensing mechanism is based on a simultaneous interaction of lard substance and an evanescent wave of tapered POF with the coating layers.The results showed that graphene coating on the tapered POF increased the selectivity coefficient of the tapered POF towards lard substance from 33.54 to 324.19,and it gave a sensitivity of 0.427 dBm/%.In comparison,multi-walled carbon nanotubes coating increased the selectivity coefficient to 71.65 and increased its sensitivity to 1.189 dBm/%.Thus,the proposed configuration of the tapered POF with the coating material offered a simple configuration for a rapid,high sensitivity and selectivity detection of lard adulterant in edible oils. | Ika PUSPITA Ninik IRAWATI Kartika Anoraga MADURANI Fredy KURNIAWAN Sekartedjo KOENTJORO Agus Muhamad HATTA | 2022 | Photonic Sensors2022，12，4： | 2 |
| 17 | Wear Properties of Carbon-Carbon Composites Processed by Hot Press (HP) Based on Coal Waste Powder显示文摘 | Agus Edy Pramono Anne Zulfia Johny Wahyuadi Soedarsono | 2011 | 材料科学与工程(中英文B版)2011，1，1： | 2 |
| 18 | 乳酸林格液和BSS对白内障术后角膜内皮细胞密度和形态的影响(英文)显示文摘目的:比较超声乳化过程中分别使用乳酸林格液和平衡盐溶液进行灌注,对角膜内皮细胞密度和形态的影响。方法:前瞻性随机对照研究于2017-02/2017-04期间在印度尼西亚日惹市Dr.YAP眼科医院进行。共有年龄相关性白内障患者52例52眼纳入了研究,分为两组,一组26例26眼术中使用乳酸林格液作为灌注液,另一组26例26眼使用平衡盐溶液作为灌注液。术后1、7和28d,评估角膜内皮细胞的密度和形态,同时比较两组患者眼内炎症反应情况。结果:纳入的全部52例52眼接受了超声乳化白内障摘除术联合人工晶状体植入。术后28d,平衡盐溶液组角膜内皮细胞减少了173.96/mm^2,较乳酸林格液组低(253.20/mm^2);角膜内皮细胞变异系数增加了2.92%,也较乳酸林格液组低(3.42%);六角形细胞百分比减少程度(4.30%)较乳酸林格液组(4.84%)低。平衡盐溶液组角膜中央厚度增加程度与林格液组相当(4.69μm vs 4.53μm)。两组角膜内皮细胞相关指标的差异均无显著性。两组之间炎症反应情况也相似。结论:平衡盐溶液和乳酸林格液在避免老年白内障患者超声乳化术后角膜内皮细胞丢失和形态改变方面效果相当。 | Farahdina Rahmawati Agus Supartoto Wasisdi Gunawan Retno Ekantini Rinanto Prabowo Indra Tri Mahayana | 2018 | 国际眼科杂志2018，18，2： | 2 |
| 19 | RCEP背景下中国对外直接投资在印尼的潜力和挑战显示文摘为推动中国与印尼经贸合作,加强“一带一路”倡议同印尼发展战略对接,发挥双方经济互补优势,通过文献阅读法和统计分析法梳理了印尼的投资环境、外来投资区位结构,中国对印尼直接投资的区位结构和海外园区分布;通过回归模型,分析投资环境对中国在印尼直接投资的影响,探索RCEP背景下中国在印尼直接投资面临的潜力和挑战。研究认为,中国在印尼的直接投资面临经济发展水平、投资便利度、政府影响和人力资源等因素共同影响着中国在印尼的对外直接投资规模;经济发展水平、投资便利度、政府影响、人力资源等投资环境是制约印尼吸引外国投资和发展经济的外在阻碍,行政管理体制是制约印尼经济发展的内在因素;如何处理好外来产业和本土产业的关系是印尼未来发展所面临的重大挑战。研究表明,中国和印尼要充分利用RCEP签署带来的巨大政策红利,利用好两国已有的合作机制和平台,鼓励中国企业积极对接相关产业合作园区,深度参与印尼海洋经济、食品制造、能源经济等重点产业的投资开发,形成较多互补性和较少竞争性的中印尼经贸关系,实现国家间政治、经济关系的飞跃发展,外贸与投资领域的新突破。 | 汪涛 王玥 AGUS SUPRIYADI MELDA RIA JUWITA | 2022 | 长安大学学报(社会科学版)2022，24，5： | 2 |
| 20 | Rainfall infiltration: infinite slope model for landslides triggering by rainstorm显示文摘 | Agus Setyo Muntohar Hung-Jiun Liao | 2010 | Natural Hazards2010，，3： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员