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| 1 | A review of recent advances in tribology显示文摘The reach of tribology has expanded in diverse fields and tribology related research activities have seen immense growth during the last decade.This review takes stock of the recent advances in research pertaining to different aspects of tribology within the last 2 to 3 years.Different aspects of tribology that have been reviewed including lubrication,wear and surface engineering,biotribology,high tem perature tribology,and computational tribology.This review attempts to highlight recent research and also presents future outlook pertaining to these aspects.It may however be noted that there are limitations of this review.One of the most important of these is that tribology being a highly multidisciplinary field,the research results are widely spread across various disciplines and there can be omissions because of this.Secondly,the topics dealt with in the field of tribology include only some of the salient topics(such as lubrication,wear,surface engineering,biotribology,high tem perature tribology,and computational tribology)but there are many more aspects of tribology that have not been covered in this review.Despite these limitations it is hoped that such a review will bring the most recent salient research in focus and will be beneficial for the growing community of tribology researchers. | Yonggang MENG Jun XU Zhongmin JIN Braham PRAKASH Yuanzhong HU | 2020 | Friction2020，8，2： | 31 |
| 2 | Influence of service temperature on tribological characteristics of self-lubricant coatings: A review显示文摘Self-lubricating coatings have been widely used to reduce friction in moving machine assemblies. However, the tribological performance of these coatings is strongly dependent on the service temperature. In this paper, an extensive review pertaining to the influence of operating service temperature on tribological performance of self-lubricating coatings has been carried out. Based on the effective lubricating temperature range, the self-lubricating coatings developed in the past have been divided into three groups: low temperature lubricant coating (from -200℃ to room temperature), moderate temperature lubricant coating (from room temperature to 500℃) and high temperature lubricant coating (〉 500℃). Ideas concerning possible ways to extend the operating temperature range of self-lubricating coatings have been presented as follows: hybridized tribological coating, adaptive tribological coatings, and diffusion rate limited solid lubricant coating, in addition, a new self-lubricating coating formulation for potential application at a wide operating temperature range has been proposed. | Jun-Feng YANG Yan JIANG Jens HARDELL Braham PRAKASH Qian-Feng FANG | 2013 | Frontiers of Materials Science2013，7，1： | 6 |
| 3 | EFFECTS OF DELAY AND SEASONALITY ON TOXIN PRODUCING PHYTOPLANKTON-ZOOPLANKTON SYSTEM显示文摘 | SUNITA GAKKHAR ANURAJ SINGH BRAHAM PAL SINGH | 2012 | International Journal of Biomathematics2012，5，5： | 5 |
| 4 | Fatigue of 0.55C-1.72Si Steel with Tempered Martensitic and Carbide-Free Bainitic Microstructures显示文摘High-Si spring steel was heat treated in three different ways:Quenching and tempering at 460 ℃ to obtain a tempered martensite microstructure,and austempering at 300 and 350 ℃,respectively,to obtain two different carbide-free bainitic microstructures.In the steel austempered at 350 ℃,both the bainite lath thickness and retained austenite content were higher than those of the steel austempered at 300 ℃.Rotating-bending fatigue tests were done in order to evaluate the effect of each heat treatment on the high-cycle fatigue behavior of the steel.When the austempering temperature was300 ℃,the endurance limit was increased by 25%despite a 5%reduction in tensile strength when compared with that of the quenched and tempered steel.The relationship between endurance limit[R_(fat)t(50%)]and ultimate tensile strength(R_m)was higher for the austempered samples in comparison with that of the quenched and tempered material.Therefore,it is believed that the presence of retained austenite affects the relationship between endurance limit and tensile strength. | Alejandro Leiro Arash Roshan Karl-Gustaf Sundin Esa Vuorinen Braham Prakash | 2014 | Acta Metallurgica Sinica(English Letters)2014，27，1： | 5 |
| 5 | Static/dynamic friction and wear of some selected polymeric materials for conformal tribo-pairs under boundary lubrication conditions显示文摘This work is aimed at investigating the friction and wear performance of different polymeric materials having potential for hydraulic system components under lubricated sliding conditions against a steel counter face.A pin-on-disc test configuration was used for the experimental study.The different polymeric materials selected for these studies were commercial polyimides(PI),polyether ether ketone(PEEK),and flouropolymers.Some of these materials were bulk materials whereas others were used as coatings applied on to the cast iron substrate.The tribological characteristics of the polymers were compared with a reference grey cast iron.The frictional characteristics were evaluated in both static and dynamic conditions.The results have shown that by using polymeric materials it is possible to reduce breakaway friction by an order of magnitude compared to grey cast iron.However,the breakaway friction increased significantly after the wear tests.The polymeric materials having lowest breakaway friction have shown the highest wear with the exception of the PEEK-PTFE coating which showed low wear.PI with graphite fillers also showed low wear but it resulted in relatively high friction.The carbon fibre reinforced materials resulted in unstable friction as well as higher wear compared to the PI materials with graphite fillers. | Daniel NILSSON Braham PRAKASH | 2013 | Friction2013，1，3： | 4 |
| 6 | 调查放射医务人员关于处理严重对比剂过敏反应的知识显示文摘目的通过电话调查评估放射医务人员是否具备一定的处理严重对比剂过敏反应的知识。方法获得机构研究伦理学委员会批准。对加拿大13所讲英语和美国13所大学附属放射科工作的放射医务人员在获得口头同意后进行调查。在这些部门里,通过多级抽样表和简单的随机抽样挑选参与者。提供一个对比剂导致严重过敏反应的假象病例,首先询问放射医务人员首选药物。然后特别询问关于肾上腺素的使用。使用Х^2检验和F精确检验对加拿大和美国团队进行比较.计算合适率、比率和95%CI。 | C.B.Lightfoot R.J.A braham(大) T.Mammen M.A bdolell S.Kapur R.J.A braham 李艳(译) 刘竞艳(校) | 2009 | 国际医学放射学杂志2009，32，4： | 4 |
| 7 | High temperature tribological behaviour of PVD coated tool steel and aluminium under dry and lubricated conditions显示文摘Aluminium alloys are commonly used as lightweight materials in the automotive industry.This non-ferrous family of metallic alloys offers a high versatility of properties and designs.To reduce weight and improve safety,high strength-to-weight ratio alloys(e.g.6XXX and 7XXX),are increasingly implemented in vehicles.However,these alloys exhibit low formability and experience considerable springback during cold forming,and are therefore hot formed.During forming,severe adhesion(i.e.galling)of aluminium onto the die surface takes place.This phenomenon has a detrimental effect on the surface properties,geometrical tolerances of the formed parts and maintenance of the dies.The effect of surface engineering as well as lubricant chemistry on galling has not been sufficiently investigated.Diamond-like carbon(DLC)and CrN physical vapour deposition(PVD)coated steel have been studied to reduce aluminium transfer.However,the interaction between lubricants and PVD coatings during hot forming of aluminium alloys is not yet fully understood.The present study thus aims to characterise the high temperature tribological behaviour of selected PVD coatings and lubricants during sliding against aluminium alloy.The objectives are to first select promising lubricant-coating combinations and then to study their tribological response in a high-temperature reciprocating friction and wear tester.Dry and lubricated tests were carried out at 300℃ using a commercial polymer lubricant.Tests using DLC,CrN,CrTiN,and CrAIN coated tool steel were compared to uncoated tool steel reference tests.The initial and worn test specimen surfaces were analysed with a 3-dimensional(3D)optical profiler,scanning electron microscope(SEM)and energy dispersive X-ray spectroscope(EDS)as to understand the wear mechanisms.The results showed formation of tribolayers in the contact zone,reducing both friction and wear.The stability of these layers highly depends on both the coatings'roughness and chemical affinity towards aluminium.The DLC and CrN coatings combined with the polymer lubricant were the most effective in reducing aluminium transfer. | Justine DECROZANT-TRIQUENAUX Leonardo PELCASTRE Cedric COURBON Braham PRAKASH Jens HARDELL | 2021 | Friction2021，9，4： | 3 |
| 8 | Tribological properties of transition metal di-chalcogenide based lubricant coatings显示文摘转变金属 di-chalcogenides MX2 (X = S, Se, Te;并且 M= W,瞬间, Nb, Ta ) 有的一个种稳固的润滑剂材料广泛地在工业被使用。如此的润滑剂涂层的润滑剂性质涂层的微观结构,取向,形态学,和作文依赖于不仅,而且在底层,在底层之间的接口和润滑剂涂层上,并且特定的申请环境。在这评论,这种润滑剂涂层的 tribological 性质上的参数的效果被总结。由比较那些涂层的优点和劣势,特殊处理象做那样,结构的调整并且处理以后被建议,试图在严重测试下面改进 tribological 表演调节(例如高温度,氧化空气或潮湿的状况) 。 | Jun-Feng YANG Braham PARAKASH Jens HARDELL Qian-Feng FANG | 2012 | Frontiers of Materials Science2012，6，2： | 3 |
| 9 | Mechanical and tribological properties of nanocomposites incorporated with two-dimensional materials显示文摘In recent years, attempts to improve the mechanical properties of composites have increased remarkably owing to the inadequate utilization of matrices in demanding technological systems where efficiency, durability, and environmental compatibility are the key requirements. The search for novel materials that can potentially have enhanced mechanical properties continues. Recent studies have demonstrated that two-dimensional (2D) nanomaterials can act as excellent reinforcements because they possess high modulus of elasticity, high strength, and ultralow friction. By incorporating 2D nanomaterials in a composite, 2D nanomaterial-based composites (2DNBCs) have been developed. In view of this, a critical review of recent mechanical and tribological studies based on 2DNBCs has been undertaken. Matrices such as polymers, ceramics, and metals, as well as most of the representative 2D nanomaterial reinforcements such as graphene, boron nitride (BN), molybdenum disulfide (MoS2), and transition metal carbides and nitrides (MXenes) have been included in this review. Their preparation strategies, intrinsic mechanical properties, friction and lubrication performances, strengthening mechanisms, influencing factors, and potential applications have been comprehensively discussed. A brief summary and prospects are given in the final part, which would be useful in designing and fabricating advanced 2D nanocomposites in the future. | Zhengjia JI Lin ZHANG Guoxin XIE Wenhu XU Dan Guo Jianbin LUO Braham PRAKASH | 2020 | Friction2020，8，5： | 3 |
| 10 | Pharmacology and chemistry of adapalene 显示文摘 | Braham S Serge M Sophia A | 1997 | J Am Acad Dermatol1997，36，： | 2 |
| 11 | Porphyromonas gingivalis Resistance to Polymyxin B Is Determined by the Lipid A 4’-Phosphatase, PGN_0524显示文摘Aim To elucidate the genetic basis for the pronounced resistance that the oral pathogen, Porphyromonas gingivalis (P. gingivalis), exhibits towards the cationic antimicrobial peptide, polymyxin B. Methodology A genetic screen of P. gingivalis clones generated by a Tn4400’-based random insertion mutagenesis strategy was performed to identify bacteria harboring novel genetic mutations that render P. gingivalis susceptible to killing by the cationic antimicrobial peptide, polymyxin B (PMB, 50 μg-mL-1). Results P. gingivalis (ATCC 33277) is unusually resistant to the cationic antimicrobial peptide, PMB at relatively high concentrations (200 μg-mL-1). Approximately 2,700 independent Tn4400’-derived mutants of P. gingivalis were examined for increased sensitivity to PMB killing at a relatively low dose (50 μg-mL-1). A single PMB-sensitive mutant was obtained in this phenotypic screen. We determined that the Tn4400’ transposon was integrated into the gene encoding the lipid A 4’-phosphatase, PGN_0524, demonstrating that this insertion event was responsible for its increased susceptibility of this clone to PMB-dependent killing. The resulting mutant strain, designated 0524-Tn4400’, was highly sensitive to PMB killing relative to wild-type P. gingivalis, and exhibited the same sensitivity as the previously characterized strain, 0524KO, which bears a genetically engineered deletion in the PGN_0524 locus. Positive ion mass spectrometric structural (MALDI-TOF MS) analyses revealed that lipid A isolates from 0524-Tn4400’ and 0524KO strains displayed strikingly similar MALDI-TOF MS spectra that were substantially different from the wildtype P. gingivalis lipid A spectrum. Finally, intact 0524- Tn4400’ and 0524KO mutant bacteria, as well as their corresponding LPS isolates, were significantly more potent in stimulating Toll-like receptor 4 (TLR4)-dependent E-selectin expression in human endothelial cells relative to intact wild-type P. gingivalis or its corresponding LPS isolate. Conclusion The combined molecular evidence provided in this report suggests that PGN_0524, a lipid A 4’-phosphatase, is the sole genetic element conferring the ability of the periodontopathogen, P. gingivalis, to evade the killing activity of cationic antimicrobial peptides, such as PMB. These data strongly implicate PGN_0524 as a critical virulence factor for the ability of P. gingivalis to evade front-line host innate defenses that are dependent upon cationic antimicrobial peptide activity and TLR4 sensing. | Stephen R. Coats Thao T. To Sumita Jain Pamela H. Braham Richard P. Darveau | 2009 | International Journal of Oral Science2009，1，3： | 2 |
| 12 | Mechanical Properties of Phases in Austeno-ferritic Duplex Stainless Steelsurface Stress Studied by X-ray Diffraction 显示文摘 | Dakhlaoui Rim Braham Chedly Baczmanski Andrzej | 2007 | Materials Science and Engineering A2007，44，1： | 1 |
| 13 | Damage to the primary dentition resulting from thumb and finger (digit) sucking显示文摘 | Fukuta O Braham RL Yokoi K | 1996 | ASDC J Dent Child1996，63，6： | 1 |
| 14 | General mechanisms of prematureovarian failure and clinical check-up显示文摘 | Christin M Braham R | 2008 | Gynecol Obstet Fertil2008，36，9： | 1 |
| 15 | A parametric moving target detector for distributed MIMO radar in non-homogeneous environment显示文摘 | Wang Pu Li Hong-bin and Himed Braham | 2013 | IEEE Transactions on Signal Processing2013，61，9： | 1 |
| 16 | The midwest snow storm of 8-11 December 1977显示文摘 | Braham R R | 1983 | Monthly Weather Reviewer1983，111，2： | 1 |
| 17 | Double loop electrochemical potentiokinetic reactivation test optimi- zation in checking of duplex stainless steel intergranu-lar corrosion suseeptibility显示文摘 | AMADOU T BRAHAM C SIDHOM H | 2004 | Metallurgical and Ma- terials Transactions A2004，35，： | 1 |
| 18 | Xen and the Art of Virtualization显示文摘 | BRAHAM P DRAGOVIC B FRASER K | 2003 | Operating Systems Review2003，37，5： | 1 |
| 19 | Chromosome abnormalities in one thousand infertile males with non obstructive sperm disorders显示文摘 | Elghezal H Hidar S Braham R | 2006 | Fertil Steril2006，86，6： | 1 |
| 20 | Neuronal nitric oxide synthase and gonadal steroid interaction in the MPOA of male rats: co-localization and testosterone-induced restoration of copu- lation and nNOS-immunoreactivity显示文摘 | Sato S Braham C S Putnam S K et a! | 2005 | Brain Res2005，1043，12： | 1 |
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