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| 1 | 智能导学环境下个性化学习模型及应用效能评价显示文摘教育信息化促进教学飞跃式发展,但是中小学学生的培养仍然是工厂流水线的模式,学生的创新意识薄弱。伴随着创客时代到来,有必要创设智能学习环境促进学生自主学习。本研究依据个性化学习理论和学习分析理论,构建了智能导学系统的结构模型与学习过程模型。并以Betty’s Brain系统为例,采用实证分析研究方法探讨学习者个性化学习过程。结果表明智能导学环境下有助于促进学习者的自我调节、自我反思及自我评价。最后,从元认知视角对学习者个性化学习效能进行了评价,以期研究能对智能导学系统的发展有一个推动作用。 | 韩建华 姜强 赵蔚 刘东亮 Gautam Biswas | 2016 | 电化教育研究2016，37，7： | 25 |
| 2 | Gut dysfunction in Parkinson's disease显示文摘Early involvement of gut is observed in Parkinson's disease(PD) and symptoms such as constipation may precede motor symptoms. α-Synuclein pathology is extensively evident in the gut and appears to follow a rostrocaudal gradient. The gut may act as the starting point of PD pathology with spread toward the central nervous system. This spread of the synuclein pathology raises the possibility of prion-like propagation in PD pathogenesis. Recently, the role of gut microbiota in PD pathogenesis has received attention and some phenotypic correlation has also been shown. The extensive involvement of the gut in PD even in its early stages has led to the evaluation of enteric α-synuclein as a possible biomarker of early PD. The clinical manifestations of gastrointestinal dysfunction in PD include malnutrition, oral and dental disorders, sialorrhea, dysphagia, gastroparesis, constipation, and defecatory dysfunction. These conditions are quite distressing for the patients and require relevant investigations and adequate management. Treatment usually involves both pharmacological and nonpharmacological measures. One important aspect of gut dysfunction is its contribution to the clinical fluctuations in PD. Dysphagia and gastroparesis lead to inadequate absorption of oral anti-PD medications. These lead to response fluctuations, particularly delayed-on and no-on, and there is significant relationship between levodopa pharmacokinetics and gastric emptying in patients with PD. Therefore, in such cases, alternative routes of administration or drug delivery systems may be required. | Adreesh Mukherjee Atanu Biswas Shyamal Kumar Das | 2016 | World Journal of Gastroenterology2016，22，25： | 26 |
| 3 | Effect of sodium arsenite on spermatogenesis, plasma gonadotrophins and testosterone in rats显示文摘Aim:To investigate the effect of arsenic on spermatogenesis.Methods:Mature(4 months old)Wistar rats were intraperitoneally administered sodium arsenite at doses of 4,5 or 6mg·kg^-1·day^-1 for 26 days.Different varieties of germ cells at stage Ⅶ seminiferous epithelium cycle,namely,type A spermatogonia(ASg),preleptotene spermatocytes(pLSc),midpachytene spermatocytes(mPSc) and step 7 spermatids(7Sd) were quantitatively evaluated, along with radioimmunoassay of plasma follicle-stimulating hormone(FSH),lutuneizing hormone(LH),testosterone and assessment of the epididymal sperm count.Results:In the 5 and 6 mg/kg groups,there were significant dosedependent decreases in the accessory sex organ weights,epididymal sperm count and plasma concentrations of LH,FSH and testosterone with massive degeneration of all the germ cells at stage Ⅶ,The changes were insignificant in the 4 mg/kg group.Conclusion:Arsenite has a suppressive influence on spermatogenesis and gonadotrophin and testosterone release in rats. | Mahitosh Sarkar Gargi Ray Chaudhuri Aloke Chattopadhyay Narendra Mohan Biswas | 2003 | Asian Journal of Andrology2003，5，1： | 24 |
| 4 | Leaching of phosphorus from incinerated sewage sludge ash by means of acid extraction followed by adsorption on orange waste gel显示文摘Ashes from sewage sludge incineration have a high phosphorus content, approximately 8% (W/W), which indicates a potential resource of the limiting nutrient. Incineration of sewage sludge with subsequent recovery of phosphorus is a relatively new sludge treatment technique. In this article, the leaching of phosphorus by using sulfuric acid as well as hydrochloric acid by means of several batch experiments was presented. At the same time a selective recovery of phosphorus by adsorption was also discussed. The effects of acid concentration, temperature and time on extraction were studied. The phosphorus leaching increased with the increase in acid concentration and temperature. Kinetic studies showed that the complete leaching of phosphorus took place in less than 4 h. Selective adsorption of phosphorus by using orange waste gel provided a hint for recovery of this natural resource, which eventually could meet the ever-increasing requirement for phosphorus. The overall results indicated that the incinerated sewage sludge ash can be treated with acid to efficiently recover phosphorus and thus can be considered a potentially renewable source of phosphorus. | Biplob Kumar Biswas Katsutoshi Inoue Hiroyuki Harada Keisuke Ohto Hidetaka Kawakita | 2009 | Journal of Environmental Sciences2009，21，12： | 20 |
| 5 | Chitosan based bioactive materials in tissue engineering applications-A review显示文摘In recent years,there have been increasingly rapid advances of using bioactive materials in tissue engineering applications.Bioactive materials constitute many different structures based upon ceramic,metallic or polymeric materials,and can elicit specific tissue responses.However,most of them are relatively brittle,stiff,and difficult to form into complex shapes.Hence,there has been a growing demand for preparing materials with tailored physical,biological,and mechanical properties,as well as predictable degradation behavior.Chitosan-based materials have been shown to be ideal bioactive materials due to their outstanding properties such as formability into different structures,and fabricability with a wide range of bioactive materials,in addition to their biocompatibility and biodegradability.This review highlights scientific findings concerning the use of innovative chitosan-based bioactive materials in the fields of tissue engineering,with an outlook into their future applications.It also covers latest developments in terms of constituents,fabrication technologies,structural,and bioactive properties of these materials that may represent an effective solution for tissue engineering materials,making them a realistic clinical alternative in the near future. | Md.Minhajul Islam Md.Shahruzzaman Shanta Biswas Md.Nurus Sakib Taslim Ur Rashid | 2020 | Bioactive Materials2020，5，1： | 15 |
| 6 | Thymosin alpha 1:A comprehensive review of the literature显示文摘Thymosin alpha 1 is a peptide naturally occurring in the thymus that has long been recognized for modifying,enhancing,and restoring immune function.Thymosin alpha 1 has been utilized in the treatment of immunocompromised states and malignancies,as an enhancer of vaccine response,and as a means of curbing morbidity and mortality in sepsis and numerous infections.Studies have postulated that thymosin alpha 1 could help improve the outcome in severely ill corona virus disease 2019 patients by repairing damage caused by overactivation of lymphocytic immunity and how thymosin alpha 1 could prevent the excessive activation of T cells.In this review,we discuss key literature on the background knowledge and current clinical uses of thymosin alpha 1.Considering the known biochemical properties including antibacterial and antiviral properties,timehonored applications,and the new promising findings regarding the use of thymosin,we believe that thymosin alpha 1 deserves further investigation into its antiviral properties and possible repurposing as a treatment against severe acute respiratory syndrome coronavirus-2. | Asimina Dominari Donald Hathaway III Krunal Pandav Wanessa Matos Sharmi Biswas Gowry Reddy Sindhu Thevuthasan Muhammad Adnan Khan Anoopa Mathew Sarabjot Singh Makkar Madiha Zaidi Michael Maher Mourad Fahem Renato Beas Valeria Castaneda Trissa Paul John Halpern Diana Baralt | 2020 | World Journal of Virology2020，9，5： | 11 |
| 7 | 重修丝绸之路:迈向亚洲一体化显示文摘丝绸之路是指将东亚、中亚、南亚与地中海沿岸国家(包括北非和欧洲)连接在一起的、纵横交错的泛亚贸易交通网络。在过去的几十年中,随着全球化的不断深入,亚洲再度成为世界经济的重心。许多亚洲经济体成为了国际生产网络中不可分割的一部分,他们自身也从不断扩大的国际贸易、投资以及加速的经济增长中获益良多。然而,由于缺乏区域性连接,亚洲巨大的发展潜力尚未发挥出来。本文认为,缺乏全面的区域性连接是影响地区增长、阻碍亚洲乃至世界一体化进程的重要因素之一。鉴于此,亚洲应该加强地区通道建设,使之成为国际通道的一部分。本文还讨论了在通过泛亚运输基础设施建设实现地区连接的过程中,可能遇到的一系列问题和挑战。 | Prabir De Biswa N.Bhattacharyay 刘小雪(译) | 2009 | 当代亚太2009，，3： | 9 |
| 8 | Human iPSCs derived astrocytes rescue rotenone-induced mitochondrial dysfunction and dopaminergic neurodegeneration in vitro by donating functional mitochondria显示文摘Background Parkinson’s disease(PD)is one of the neurodegeneration diseases characterized by the gradual loss of dopaminergic(DA)neurons in the substantia nigra region of the brain.Substantial evidence indicates that at the cellular level mitochondrial dysfunction is a key factor leading to pathological features such as neuronal death and accumulation of misfoldedα-synuclein aggregations.Autologous transplantation of healthy purified mitochondria has shown to attenuate phenotypes in vitro and in vivo models of PD.However,there are significant technical difficulties in obtaining large amounts of purified mitochondria with normal function.In addition,the half-life of mitochondria varies between days to a few weeks.Thus,identifying a continuous source of healthy mitochondria via intercellular mitochondrial transfer is an attractive option for therapeutic purposes.In this study,we asked whether iPSCs derived astrocytes can serve as a donor to provide functional mitochondria and rescue injured DA neurons after rotenone exposure in an in vitro model of PD.Methods We generated DA neurons and astrocytes from human iPSCs and hESCs.We established an astroglial-neuronal co-culture system to investigate the intercellular mitochondrial transfer,as well as the neuroprotective effect of mitochondrial transfer.We employed immunocytochemistry and FACS analysis to track mitochondria.Results We showed evidence that iPSCs-derived astrocytes or astrocytic conditioned media(ACM)can rescue DA neurons degeneration via intercellular mitochondrial transfer in a rotenone induced in vitro PD model.Specifically,we showed that iPSCs-derived astrocytes from health spontaneously release functional mitochondria into the media.Mito-Tracker Green tagged astrocytic mitochondria were detected in the ACM and were shown to be internalized by the injured neurons via a phospho-p38 depended pathway.Transferred mitochondria were able to significantly reverse DA neurodegeneration and axonal pruning following exposure to rotenone.When rotenone injured neurons were cultured in presence of ACM depleted of mitochondria(by ultrafiltration),the neuroprotective effects were abolished.Conclusions Our studies provide the proof of principle that iPSCs-derived astrocytes can act as mitochondria donor to the injured DA neurons and attenuate pathology.Using iPSCs derived astrocytes as a donor can provide a novel strategy that can be further developed for cellular therapy for PD. | Xiao-Yu Cheng Sangita Biswas Juan Li Cheng-Jie Mao Olga Chechneva Jing Chen Kai Li Jiao Li Jin-Ru Zhang Chun-Feng Liu Wen-Bin Deng | 2020 | Translational Neurodegeneration2020，9，2： | 7 |
| 9 | Minimizing treatment complexity of combat-related soft tissue injuries using a dedicated tension relief system and negative pressure therapy augmented by high-dose in situ antibiotic therapy and oxygen delivery: a retrospective study显示文摘Background:Following combat-related,extensive soft tissue injury from gunshot wounds or blasts,prolonged duration from injury to full wound closure is associated with infection,increased morbidity and mortality,failure to mobilize,poor functional outcome and increased cost.The purpose of this study was to evaluate a novel treatment enabling early primary closure of combat wounds.Methods:This was a retrospective study of 10 soldiers and civilians with extensive combat-related soft tissue limb injuries(5 gunshot wounds,5 blasts)treated using the TopClosure^(■)Tension Relief System(TRS)with simultaneous administration of regulated oxygen-enriched and irrigation negative pressure-assisted wound therapy(ROINPT)via the Vcareα^(■)device.Results:Nine patients were treated during the acute phase of injury and one was treated following removal of a flap due to deep infection 20 years after injury and flap reconstruction.Two patients had upper limb injury and the rest lower limb injury.With the aid of the TRS and/or ROINPT,immediate primary closure during reconstruction was achieved in 6 patients and delayed primary closure in three.Only one patient required a skin graft to close a small area of the wound after most of the wound had been closed by delayed primary closure.Wound closure was achieved within 0–37 days(median:12.5 days,interquartile range:2.75–19.75)from injury.Conclusions:The TRS is a novel device for effective,early skin stretching and secure wound closure through the application of stress relaxation and mechanical creep,achieving primary closure of large defects using a simplified surgical technique and reducing the need for closure using skin grafts and flaps and the use of tissue expanders.Delivering supplemental oxygen to the wound by ROINPT reverses the reduced oxygen levels inherent in conventional negative pressure-assisted wound therapy,mitigating anaerobic contamination and reducing infection.Irrigation may accelerate the evacuation of infectious material from the wound and provide a novel method for antibiotic administration.The combination of TRS and ROINPT devices allow for early primary closure with improved functionality of combat-related limb injuries. | Moris Topaz Itamar Ashkenazi Oren Barzel Seema Biswas Dan Atar Nurit Shadmi Itzhak Siev-Ner | 2021 | Burns & Trauma2021，9，1： | 7 |
| 10 | Targeted therapy in chronic diseases using nanomaterial-based drug delivery vehicles显示文摘The application of nanomedicines is increasing rapidly with the promise of targeted and efficient drug delivery.Nanomedicines address the shortcomings of conventional therapy,as evidenced by several preclinical and clinical investigations indicating site-specific drug delivery,reduced side effects,and better treatment outcome.The development of suitable and biocompatible drug delivery vehicles is a prerequisite that has been successfully achieved by using simple and functionalized liposomes,nanoparticles,hydrogels,micelles,dendrimers,and mesoporous particles.A variety of drug delivery vehicles have been established for the targeted and controlled delivery of therapeutic agents in a wide range of chronic diseases,such as diabetes,cancer,atherosclerosis,myocardial ischemia,asthma,pulmonary tuberculosis,Parkinson’s disease,and Alzheimer’s disease.After successful outcomes in preclinical and clinical trials,many of these drugs have been marketed for human use,such as Abraxane®,Caelyx®,Mepact®,Myocet®,Emend®,and Rapamune®.Apart from drugs/compounds,novel therapeutic agents,such as peptides,nucleic acids(DNA and RNA),and genes have also shown potential to be used as nanomedicines for the treatment of several chronic ailments.However,a large number of extensive clinical trials are still needed to ensure the short-term and long-term effects of nanomedicines in humans.This review discusses the advantages of various drug delivery vehicles for better understanding of their utility in terms of current medical needs.Furthermore,the application of a wide range of nanomedicines is also described in the context of major chronic diseases. | Akhand Pratap Singh Arpan Biswas Aparna Shukla Pralay Maiti | 2019 | Signal Transduction and Targeted Therapy2019，4，1： | 6 |
| 11 | Analgesic,anti-inflammatory and anti-diarrheal activities of ethanolic leaf extract of Typhonium trilobatum L.Schott显示文摘Objective:To explore the efficacy of ethanolic leaf extract of Typhonium trilobatum L.Schott in treating diarrhea,pain and inflammation using experimental models.Methods:In the present study,acetic acid-induced writhing,xylene-induced ear edema and castor oil-imluced diarrlieal model were used to evaluate the analgesic,anti-inflammatory and anti-diarrheal activities,respectively.Acute toxicity test was carried out to fix the safe doses of the plant extract.Results:The plant extract demonstrated a significant inhibition of writhing(P<0.01)compared with the control group in acetic acid-induced writhing test in mice.The extract also significantly inhibited the xylene induced ear edema formation(P<0.05).In anti-diarrheal test,the extract significantly decreased the frequency of defecation and increased the mean latent period(P<0.0l)in castor oil-induced diarrheal model mice at the doses of 250 and 500 mg/kg body weight.Conclusions:These results suggest that the extract possesses significant analgesic,anti-inflammatory and anti-diarrheal activities that support to the ethnopharmacologicl uses of this plant. | Khadem Ali Ayesha Ashraf Nripendra Nath Biswas | 2012 | Asian Pacific Journal of Tropical Biomedicine2012，2，9： | 6 |
| 12 | Predicting herbicides concentrations in paddy water and runoff to the river basin显示文摘This study was conducted to investigate the dissipation pattern and runoff of herbicides to the river basin from the paddy fields. Pesticide paddy field model(PADDY) was applied to predict herbicide concentration in paddy fields. A field study was conducted in a paddy farm of Higashi Hiroshima City, Hiroshima Prefecture, Japan in the year of 2003 paddy season. The herbicides were mefenacet, thiobencarb, and bensulfuron methyl. The sample water was analyzed by using gas chromatography and HPLC after solid phase extraction. Predicted dissipation rate of thiobencarb in paddy water was higher(DT_ 50 = 4 36) than that measured, with a lower k value(-0 069). Two weeks after application no thiobencarb was detected in the drainage channel and down stream. In the down stream, thiobencarb was detected until 3 d after application, with a range of 0 02% to 0 08% of applied herbicide. The predicted dissipation rate(k) and half-life(DT_ 50 ) of mefenacet was not significantly different from that of measured. In the drainage channel, upstream and downstream mefenacet was found during the whole study period. In downstream, the maximum concentration of mefenacet was present 0 61% of applied in the paddy field on 3DAH. The dissipation rate(k) of BSM varied from -0 0860 to -0 1059 to with half-life(DT_ 50 ) 3 5 and 2 84 d. In upstream water, no BSM was detected except trace amounts(0 01 μg/L) at 3 d after application. However, in the drainage channel 8%, 6% and 1 58% of applied BSM was present at 0, 1 and 3 d after application respectively. In the down stream, the highest concentration was 1 06%, shortly after application. | PARVEEN Sultana KOHGUCHI Testuyuki BISWAS Moloy NAKAGOSHI Nobukazu | 2005 | Journal of Environmental Sciences2005，17，4： | 6 |
| 13 | Synthesis of ion imprinted polymers for selective recognition and separation of rare earth metals显示文摘Lanthanide-ion imprinted polymers(L-IIPs) were synthesized by stoichiometric amounts of rare earth ions and the cavities in the polymers were created for the corresponding lanthanide ions. The maximum sorption capacities were estimated to be 125.3, 126.5, 127.6, 128.2 and 129.1 mg/g for Pr, Nd, Sm, Eu and Gd, respectively at p H 6. In the selectivity study, the L-IIPs exhibited good selectivity to the specific rare earth ions in the presence of coexisting cations. The imprinting results were found to be excellent with some rare earth ions over other competitor rare earth ions with the same charges and close ionic radius. | Mashitah M.Yusoff Nik Rohani Nik Mostapa Md Shaheen Sarkar Tapan Kumar Biswas Md Lutfor Rahman Sazmal Effendi Arshad Mohd Sani Sarjadi Ajaykumar D.Kulkarni | 2017 | Journal of Rare Earths2017，35，2： | 6 |
| 14 | Chitosan based metallic nanocomposite scaffolds as antimicrobial wound dressings显示文摘Chitosan based nanocomposite scaffolds have attracted wider applications in medicine,in the area of drug delivery,tissue engineering and wound healing.Chitosan matrix incorporated with nanometallic components has immense potential in the area of wound dressings due to its antimicrobial properties.This review focuses on the different combinations of Chitosan metal nanocomposites such as Chitosan/nAg,Chitosan/nAu,Chitosan/nCu,Chitosan/nZnO and Chitosan/nTiO2 towards enhancement of healing or infection control with special reference to the antimicrobial mechanism of action and toxicity. | Annapoorna Mohandas S.Deepthi Raja Biswas R.Jayakumar | 2018 | Bioactive Materials2018，3，3： | 6 |
| 15 | Low-cost high entropy alloy(HEA)for high-efficiency oxygen evolution reaction(OER)显示文摘Oxygen evolution reaction(OER)is the key step involved both in water splitting devices and rechargeable metal-air batteries,and hence,there is an urgent need for a stable and low-cost material for efficient OER.In the present investigation,Co-Fe-Ga-NiZn(CFGNZ)high entropy alloy(HEA)has been utilized as a low-cost electrocatalyst for OER.Herein,after cyclic voltammetry activation,CFGNZ-nanoparticles(NPs)are covered with oxidized surface and form high entropy(oxy)hydroxides(HEOs),exhibiting a low overpotential of 370 mV to achieve a current density of 10 mA/cm^(2)with a small Tafel slope of 71 mV/dec.CFGNZ alloy has higher electrochemical stability in comparison to state-of-the art RuO2 electrocatalyst as no degradation has been observed up to 10 h of chronoamperometry.Transmission electron microscopy(TEM)studies after 10 h of long-term chronoamperometry test showed no change in the crystal structure,which confirmed the high stability of CFGNZ.The density functional theory(DFT)based calculations show that the closeness of d(p)-band centers to the Fermi level(EF)plays a major role in determining active sites.This work highlights the tremendous potential of CFGNZ HEA for OER,which is the primary reaction involved in water splitting. | Lalita Sharma Nirmal Kumar Katiyar Arko Parui Rakesh Das Ritesh Kumar Chandra Sekhar Tiwary Abhisek K.Singh Aditi Halder Krishanu Biswas | 2022 | Nano Research2022，15，6： | 5 |
| 16 | Comparative analysis of some selected macronutrients of soil in orange orchard and degraded forests in Chittagong Hill Tracts,Bangladesh显示文摘Status of organic carbon (C), total nitrogen (N), available potassium (K), calcium (Ca) and phosphorus (P) in three different depths (0-5 cm, 5-15 cm and 15?30 cm) on two hill slopes of 35% and 55% in orange orchard cultivated by the Mro tribe of Chittagong Hill Tracts (CHTs) were evaluated and compared with those in degraded bush forests, through digging three profiles in each land use. The content of all the five nutrients was found to be higher in the soil of orange orchard than in the soil of forest. But the variation was not consistent for both the slopes. The content varied depth wise also, having the highest value in surface soil in case of both the land uses on both the slopes. A mean available K content was significantly higher in orange orchard than in forest on 55% slope, while it was lower on 35% slope. Surface soil contained the nutrients of K and Ca with the amount of 0.2905-mg·g^(-1) soil and 3.025-mg·g^(-1)soil respectively in the orchard, while 0.1934-mg·g^(-1) soil and 1.6083-mg·g^(-1) soil were respectively in the forest. Organic carbon and total nitrogen were found more or less similar in surface soil on both the land uses showing a slight difference. Available P was found only in orange orchard, and in forest it was too little in amount to detect by the spectrophotometer. The degraded forests were poor in nutrient content due to high rate of soil erosion, which would be possible to be improved by bringing it under tree cover as proved by the adaptation of orange orchard there. | Mohammad Shaheed Hossain Chowdhury Shampa Biswas Md. Abdul Halim S. M. Sirajul Haque Nur Muhammed Masao Koike | 2007 | Journal of Forestry Research2007，18，1： | 5 |
| 17 | Intrusion Detection System for PS-Poll DoS Attack in 802.11 Networks Using Real Time Discrete Event System显示文摘Wi-Fi devices have limited battery life because of which conserving battery life is imperative. The 802.11 Wi-Fi standard provides power management feature that allows stations(STAs) to enter into sleep state to preserve energy without any frame losses. After the STA wakes up, it sends a null data or PS-Poll frame to retrieve frame(s) buffered by the access point(AP), if any during its sleep period. An attacker can launch a power save denial of service(PS-DoS) attack on the sleeping STA(s) by transmitting a spoofed null data or PS-Poll frame(s) to retrieve the buffered frame(s) of the sleeping STA(s) from the AP causing frame losses for the targeted STA(s). Current approaches to prevent or detect the PS-DoS attack require encryption,change in protocol or installation of proprietary hardware. These solutions suffer from expensive setup, maintenance, scalability and deployment issues. The PS-DoS attack does not differ in semantics or statistics under normal and attack circumstances.So signature and anomaly based intrusion detection system(IDS) are unfit to detect the PS-DoS attack. In this paper we propose a timed IDS based on real time discrete event system(RTDES) for detecting PS-DoS attack. The proposed DES based IDS overcomes the drawbacks of existing systems and detects the PS-DoS attack with high accuracy and detection rate. The correctness of the RTDES based IDS is proved by experimenting all possible attack scenarios. | Mayank Agarwal Sanketh Purwar Santosh Biswas Sukumar Nandi | 2017 | IEEE/CAA Journal of Automatica Sinica2017，4，4： | 5 |
| 18 | Effect of ultrasonic vibration-assisted laser surface melting and texturing of Ti-6Al-4V ELI alloy on surface properties显示文摘Ultrasonic vibration-assisted laser surface processing that involves application of vertical ultrasonic vibrations to the Ti-6 Al-4 V alloy substrates while being irradiated with a CO_2 laser was performed for the development of laser melted and textured surfaces with potential applications in biomedical implants.The laser processing resulted in very consistent repeating undulating grooved surfaces, and the undulations were significantly more pronounced in the samples processed with higher ultrasonic power outputs.The phase evolution, studied by x-ray diffraction, confirmed that the laser processing triggered transformation of globular α→ acicular α and martensitic α' as well as increased amounts of retained α phases,which were also reflected in the microscopic analysis. The surface texture developed by laser processing resulted in increased surface wettability with increasing ultrasonic power output. The textured surfaces exhibited marked decrease in coefficients of friction during sliding wear testing performed under simulated body fluid due to lubricant entrainment within the textured grooves. The texturing also resulted in significant reduction in surface contact area during the wear process, which considerably reduced the overall wear rates due to abrasive wear. | Sourabh Biswas S.Habib Alavi Bhishma Sedai Frank D.Blum Sandip P.Harimkar | 2019 | Journal of Materials Science & Technology2019，35，2： | 5 |
| 19 | 二硼化钛对Al2024−TiB_(2)非原位复合材料摩擦磨损性能的影响显示文摘用搅拌铸造法制备不同质量分数二硼化钛(TiB_(2))颗粒增强的铝基复合材料,并研究其摩擦磨损性能。采用销−盘式摩擦试验机对Al2024−TiB_(2)复合材料进行干滑动磨损试验。为了研究摩擦学参数对复合材料的影响,对载荷、滑动距离和滑动速度等参数进行调整。显微组织表征结果表明,TiB_(2)颗粒分散均匀并与基体有良好的结合。实验结果表明,与Al2024合金相比,复合材料的摩擦磨损率更低,而Al2024合金和复合材料的磨损率均随载荷、滑动速度和滑动距离的增加而增加。然而,Al2024合金和复合材料的摩擦因数均随载荷的增大而减小,而随滑动速度和滑动距离的增大而增大。对磨损表面和磨屑的扫描电镜研究表明,耐磨性的提高归因于细小磨屑的形成。 | Dipankar DEY Abhijit BHOWMIK Ajay BISWAS | 2021 | Transactions of Nonferrous Metals Society of China2021，31，5： | 4 |
| 20 | Comparative evaluation of physical properties in soils of orange orchard and bushy forest in chittagong hill tracts, Banglandesh显示文摘对孟加拉国丘陵地带Mro部落经营的桔园与灌木林35%和55%两种坡地土壤物理性质进行了比较与评价。每一块用地内挖掘3个土壤剖面采集不同深度(0-5cm,5-15cm and 15-30cm)的土壤样品,测定土壤水分、有机质含量和土壤密度。最大持水量、田间持水量、干或湿土壤容重和土壤孔隙度的测定仅限于表层土壤。两种坡地桔园3个深度的土壤水分含量均显著高于灌木林地相同深度的土壤水分。桔园在55%坡地内土壤有机质含量低于林地含量值,而在35%坡地内的含量值则高于林地值。两块样地内上述两项测定值均在表层土壤中最高,且随土层深度的增加而降低。与灌木林地比较,桔园地表层土壤最大持水量、孔隙度和3个不同深度的土壤密度均较低。两块用地内不同坡地的表层土田间持水量有所差异,且桔园地干或湿表层土壤容重高于林地内的数值。表5参23。 | Mohammad Shaheed Hossain Chowdhury Md. Abdul Halim Shampa Biswas S. M. Sirajul Haque Nur Muhammed Masao Koike | 2007 | Journal of Forestry Research2007，18，3： | 4 |
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