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| 1 | Power hardware in the loop validation of fault ride through of VSC HVDC connected offshore wind power plants显示文摘This paper presents the power hardware in the loop(PHIL)validation of a feed forward DC voltage control scheme for the fault ride through(FRT)of voltage source converter(VSC)high voltage DC(HVDC)connected offshore wind power plants(WPPs).In the proposed FRT scheme,the WPP collector network AC voltage is actively controlled by considering both the DC voltage error and the AC current from the WPP AC collector system which ensures fast and robust FRT of the VSC HVDC connected offshore WPPs.The PHIL tests were carried out in order to verify the efficacy of the proposed feed forward DC voltage control scheme for enhancing the FRT capability of the VSC HVDC connected WPPs.The PHIL test results have demonstrated the proper control coordination between the offshore WPP and the WPP side VSC and the efficient FRT of the VSC HVDC connected WPPs. | Ranjan SHARMA Qiuwei WU Seung Tae CHA Kim H.JENSEN Tonny W.RASMUSSEN JacobØSTEGAARD | 2014 | Journal of Modern Power Systems and Clean Energy2014，2，1： | 26 |
| 2 | The development of Terminalia chebula Retz.(Combretaceae) in clinical research显示文摘Medicinal plants are part and parcel of human society to combat diseases from the dawn of civilization.Terminalia chebula Retz.(Fam.Combretaceae),is called the‘King of Medicine??in Tibet and is always listed at the lop of the list of‘Ayurvedic Materia Medica??because of its extraordinary power of healing.The whole plant possesses high medicinal value and traditionally used for the treatment of various ailments for human beings.Some of the folklore people used this plant in the treatment of asthma,sore throat,vomiting,hiccough,diarrhea,dysentery,bleeding piles,ulcers,gout,heart and bladder diseases.The plant has been demonstrated to possess multiple pharmacological and medicinal activities,such as antioxidant,antimicrobial,antidiabetic,hepatoprotective,anti-inflammatory,antimutagenic,antiproliferative,radioprotective,cardioprotective,antiarthritic,anticaries,gastrointestinal motility and wound healing activity.But no systematic updated information on the therapeutic effectiveness of Terminalia chebula,a popular herbal remedy in India and South-East Asia has so far been reported.This review highlights an updated information particularly on the phytochemistry and various pharmacological and medicinal properties of Terminalia chebula Retz.and some of its isolated compounds,along with their safety evaluation.This may provide incentive for proper evaluation of the plant as medicinal agent against the human diseases and also to bridge the lacunae in the existing literature and future scope which may offer immense opportunity for researchers engaged in validation of the traditional claims and development of safe and effective botanical medicine. | Anwesa Bag Subir Kumar Bhattacharyya Rabi Ranjan Chattopadhyay | 2013 | Asian Pacific Journal of Tropical Biomedicine2013，3，3： | 17 |
| 3 | All-optical active THz metasurfaces for ultrafast polarization switching and dynamic beam splitting显示文摘Miniaturized ultrafast switchable optical components with an extremely compact size and a high-speed response will be the core of next-generation all-optical devices instead of traditional integrated circuits,which are approaching the bottleneck of Moore’s Law.Metasurfaces have emerged as fascinating subwavelength flat optical components and devices for light focusing and holography applications.However,these devices exhibit a severe limitation due to their natural passive response.Here we introduce an active hybrid metasurface integrated with patterned semiconductor inclusions for all-optical active control of terahertz waves.Ultrafast modulation of polarization states and the beam splitting ratio are experimentally demonstrated on a time scale of 667 ps.This scheme of hybrid metasurfaces could also be extended to the design of various free-space all-optical active devices,such as varifocal planar lenses,switchable vector beam generators,and components for holography in ultrafast imaging,display,and high-fidelity terahertz wireless communication systems. | Longqing Cong Yogesh Kumar Srivastava Huifang Zhang Xueqian Zhang Jiaguang Han Ranjan Singh | 2018 | Light(Science & Applications)2018，7，1： | 15 |
| 4 | Retinopathy of prematurity: Past, present and future显示文摘Retinopathy of prematurity(ROP) is a vasoproliferative disorder of the retina occurring principally in new born preterm infants. It is an avoidable cause of childhood blindness. With the increase in the survival of preterm babies, ROP has become the leading cause of preventable childhood blindness throughout the world. A simple screening test done within a few weeks after birth by an ophthalmologist can avoid this preventable blindness. Although screening guidelines and protocols are strictly followed in the developed nations, it lacks in developing economies like India and China, which have the highest number of preterm deliveries in the world. The burden of this blindness in these countries is set to increase tremendously in the future, if corrective steps are not taken immediately. ROP first emerged in 1940 s and 1950 s, when it was called retrolental fibroplasia. Several epidemics of this disease were and are still occurring in different regions of the world and since then a lot of research has been done on this disease. However, till date very few comprehensive review articles covering all the aspects of ROP are published. This review highlights the past, present and future strategies in managing this disease. It would help the pediatricians to update their current knowledge on ROP. | Parag K Shah Vishma Prabhu Smita S Karandikar Ratnesh Ranjan Venkatapathy Narendran Narendran Kalpana | 2016 | World Journal of Clinical Pediatrics2016，5，1： | 13 |
| 5 | Determination of blast-induced ground vibration equations for rocks using mechanical and geological properties显示文摘In the recent decades,effects of blast loads on natural and man-made structures have gained considerable attention due to increase in threat from various man-made activities.Site-specific empirical relationships for calculation of blast-induced vibration parameters like peak particle velocity(PPV) and peak particle displacement(PPD) are commonly used for estimation of blast loads in design.However,these relationships are not able to consider the variation in rock parameters and uncertainty of in situ conditions.In this paper,a total of 1089 published blast data of various researchers in different rock sites have been collected and used to propose generalized empirical model for PPV by considering the effects of rock parameters like unit weight,rock quality designation(RQD),geological strength index(GSI),and uniaxial compressive strength(UCS).The proposed PPV model has a good correlation coefficient and hence it can be directly used in prediction of blast-induced vibrations in rocks.Standard errors and coefficient of correlations of the predicted blast-induced vibration parameters are obtained with respect to the observed field data.The proposed empirical model for PPV has also been compared with the empirical models available for blast vibrations predictions given by other researchers and found to be in good agreement with specific cases. | Ranjan Kumar Deepankar Choudhury Kapilesh Bhargava | 2016 | Journal of Rock Mechanics and Geotechnical Engineering2016，8，3： | 11 |
| 6 | Underwater persistent bubble-assisted femtosecond laser ablation for hierarchical micro/nanostructuring显示文摘In this study,we demonstrate a technique termed underwater persistent bubble assisted femtosecond laser ablation in liquids(UPB-fs-LAL)that can greatly expand the boundaries of surface micro/nanostructuring through laser ablation because of its capability to create concentric circular macrostructures with millimeter-scale tails on silicon substrates.Long-tailed macrostructures are composed of layered fan-shaped(central angles of 45°–141°)hierarchical micro/nanostructures,which are produced by fan-shaped beams refracted at the mobile bubble interface(.50°light tilt,referred to as the vertical incident direction)during UPB-fs-LAL line-by-line scanning.Marangoni flow generated during UPB-fs-LAL induces bubble movements.Fast scanning(e.g.1mms−1)allows a long bubble movement(as long as 2mm),while slow scanning(e.g.0.1mms−1)prevents bubble movements.When persistent bubbles grow considerably(e.g.hundreds of microns in diameter)due to incubation effects,they become sticky and can cause both gas-phase and liquidphase laser ablation in the central and peripheral regions of the persistent bubbles.This generates low/high/ultrahigh spatial frequency laser-induced periodic surface structures(LSFLs/HSFLs/UHSFLs)with periods of 550–900,100–200,40–100 nm,which produce complex hierarchical surface structures.A period of 40 nm,less than 1/25th of the laser wavelength(1030 nm),is the finest laser-induced periodic surface structures(LIPSS)ever created on silicon.The NIR-MIR reflectance/transmittance of fan-shaped hierarchical structures obtained by UPB-fs-LAL at a small line interval(5μm versus 10μm)is extremely low,due to both their extremely high light trapping capacity and absorbance characteristics,which are results of the structures’additional layers and much finer HSFLs.In the absence of persistent bubbles,only grooves covered with HSFLs with periods larger than 100 nm are produced,illustrating the unique attenuation abilities of laser properties(e.g.repetition rate,energy,incident angle,etc)by persistent bubbles with different curvatures.This research represents a straightforward and cost-effective approach to diversifying the achievable hierarchical micro/nanostructures for a multitude of applications. | Dongshi Zhang Bikas Ranjan Takuo Tanaka Koji Sugioka | 2020 | International Journal of Extreme Manufacturing2020，2，1： | 11 |
| 7 | One step synthesis of pyrido[1,2-a]benzimidazole derivatives of aryloxypyrazole and their antimicrobial evaluation显示文摘A new series of pyrido[1,2-α]benzimidazole derivatives bearing the aryloxypyrazole nucleus have been synthesized by base-catalyzed cyclocondensation reaction through multi-component reaction(MCR) approach.All the synthesized compounds were investigated against a representative panel of pathogenic strains using broth microdilution minimum inhibitory concentration(MIC) method for their in vitro antimicrobial activity.Reviewing the data,majority of the compounds were found to be active against employed pathogens.SAR study explores that antimicrobial activity is strongly depends on the nature of the substituents at the ether linked aryl ring attached to the pyrazole unit,together with the substituent present on the C_5 of the benzimidazole unit. | Hardik H.Jardosh Chetan B.Sangani Manish P.Patel Ranjan G.Patel | 2013 | Chinese Chemical Letters2013，24，2： | 9 |
| 8 | Electrically Programmable Terahertz Diatomic Metamolecules for Chiral Optical Control显示文摘Optical chirality is central to many industrial photonic technologies including enantiomer identifcation,ellipsometry-based tomography,and spin multiplexing in optical communications.However,a substantial chiral response requires a threedimensional constituent,thereby making the morphology highly complex to realize structural reconfguration.Moreover,an active reconfguration demands intense dosage of external stimuli that pose a major limitation for on-chip integration.Here,we report a low bias,electrically programmable synthetic chiral paradigm with a remarkable reconfguration among levorotatory,dextrorotatory,achiral,and racemic conformations.Te switchable optical activity induced by the chiral conformations enables a transmission-type duplex spatial light modulator for terahertz single pixel imaging.Te prototype delivers a new strategy towards reconfgurable stereoselective photonic applications and opens up avenues for on-chip programmable chiral devices with tremendous applications in biology,medicine,chemistry,and photonics. | Longqing Cong Prakash Pitchappa Nan Wang Ranjan Singh | 2019 | Research2019，，1： | 8 |
| 9 | Microwave assisted synthesis of novel Hantzsch 1,4-dihydropyridines,acridine-1,8-diones and polyhydroquinolines bearing the tetrazolo[1,5-α]quinoline moiety and their antimicrobial activity assess显示文摘Microwave assisted efficient Hantzsch reaction via four-component coupling reactions of tetrazolo[1,5-α]quinoline-4-carbal-dehyde, dimedone/cyclohexane-1,3-dione,ethyl/methyl acetoacetate and ammonium acetate was described as the preparation of tetrazolo[1,5-α]quinoline based 1,4-dihydropyridines,acridine-1,8-diones and polyhydroquinolines.The process presented here is simple,rapid,environmentally welcoming and high yielding.All the derivatives were subjected to an in vitro antimicrobial screening against a representative panel of bacteria and fungi and results worth further investigations. | Niraj K.Ladani Divyesh C.Mungra Manish P.Patel Ranjan G.Patel | 2011 | Chinese Chemical Letters2011，22，12： | 7 |
| 10 | 石墨片对环氧树脂的热学、力学和电学性能影响(英文)显示文摘采用溶液技术制备出膨胀石墨增强环氧树脂复合材料。对石墨进行化学改性以提高与环氧树脂的相容性。采用XRD、FE-SEM和HR-TEM对环氧树脂/膨胀石墨复合材料进行表征。与环氧树脂相比,添加质量分数9%膨胀石墨后,该复合材料的热分解温度从340℃升高至480℃,抗张应力提高30%,导电率由10-15增加至10-5数量级。热学、力学和电学性能的显著提高,主要归因于膨胀石墨纳米片在环氧树脂基体中的良好分散性,从而可用于广泛的应用领域。 | Subhra Gantayat Gyanaranjan Prusty Dibya Ranjan Rout Sarat K Swain | 2015 | 新型炭材料2015，30，5： | 7 |
| 11 | A Novel Multi-agent Formation Control Law With Collision Avoidance显示文摘In this paper a stable formation control law that simultaneously ensures collision avoidance has been proposed.It is assumed that the communication graph is undirected and connected.The proposed formation control law is a combination of the consensus term and the collision avoidance term(CAT).The first order consensus term is derived for the proposed model,while ensuring the Lyapunov stability.The consensus term creates and maintains the desired formation shape,while the CAT avoids the collision.During the collision avoidance,the potential function based CAT makes the agents repel from each other.This unrestricted repelling magnitude cannot ensure the graph connectivity at the time of collision avoidance.Hence we have proposed a formation control law,which ensures this connectivity even during the collision avoidance.This is achieved by the proposed novel adaptive potential function.The potential function adapts itself,with the online tuning of the critical variable associated with it.The tuning has been done based on the lower bound of the critical variable,which is derived from the proposed connectivity property.The efficacy of the proposed scheme has been validated using simulations done based on formations of six and thirty-two agents respectively. | Arindam Mondal Laxmidhar Behera Soumya Ranjan Sahoo Anupam Shukla | 2017 | IEEE/CAA Journal of Automatica Sinica2017，4，3： | 7 |
| 12 | Metamaterial inspired terahertz devices: from ultra-sensitive sensing to near field manipulation显示文摘We present a review of terahertz plasmonic metamaterial devices that have functionalities and applications ranging from sensing, enhanced electromagnetic fields, and near field manipulation. Metamaterials allow the properties of light propagation to be manipulated at will by using a combination of appropriately designed geometry and suitable materials at the unit cell level. In this review, we first discuss the sensing aspect of a planar plasmonic metamaterial and how to overcome its limitations. Conventional symmetric metamaterials are limited by their low Q factor, thus we probed the symmetry broken plasmonic metamaterial structures in which the interference between a broad continuum mode and a narrow localized mode leads to the excitation of the sharp Fano resonances. We also discuss the near field mediated excitation of dark plasmonic modes in metamaterials that is caused by a strong coupling from the bright mode resonator. The near field coupling between the dark and bright mode resonances leads to classical analogue of electromagnetically induced transparency in plasmonic systems. Finally, we discuss active switching in terahertz metamaterials based on high temperature superconductors that holds the promise of reducing the resistive losses in these systems, though it fails to suppress the radiation loss in plasmonic metamaterial at terahertz frequencies. | 王锦 王爽 Ranjan Singh 张伟力 | 2013 | Chinese Optics Letters2013，11，1： | 7 |
| 13 | Anti-inflammatory effects of traditional mixed extract of medicinal herbs(MEMH)on monosodium urate crystal-induced gouty arthritis显示文摘Korean oriental medicine prescription is widely used for the treatment of gouty diseases. In the present study, we investigated anti-inflammatory effects of modified Korean herbal formulation, mixed extract of medicinal herbs(MEMH), and its modulatory effects on inflammatory mediators associated with gouty arthritis. Both in vitro and in vivo studies were carried out to assess the anti-inflammatory efficacy of MEMH on monosodium urate(MSU) crystals-induced gouty inflammation. MSU crystals stimulated human chondrosarcoma cell line, SW1353, and human primary chondrocytes were treated with MEMH in vitro. The expression levels of pro-inflammatory mediators and metalloproteases were analyzed. The effect of MEMH on NFκB signaling pathway in SW1353 cells was examined. Effect of MEMH on the mR NA expression level of pro-inflammatory mediators and chemotactic factor from human monocytic cell line, THP-1, was also analyzed. The probable role of MEMH in the differentiation process of osteoblast like cells, SaO S-2, after MSU treatment was also observed. To investigate the effects of MEMH in vivo, MSU crystals-induced ankle arthritic model was established. Histopathological changes in affected joints and plasma levels of pro-inflammatory mediators(IL-1β and TNFα) were recorded. MEMH inhibited NFκB signaling pathway and COX-2 protein expression in chondrocytes. MSU-induced mR NA expressions of pro-inflammatory mediators and chemotactic cytokines were suppressed by MEMH. In MSU crystals-induced ankle arthritic mouse model, administration of MEMH relieved inflammatory symptoms and decreased the plasma levels of IL-1β and TNFα. The results indicated that MEMH can effectively inhibit the expression of inflammatory mediators in gouty arthritis, demonstrating its potential for treating gouty arthritis. | Ju-Suk Nam Supriya Jagga Ashish Ranjan Sharma Joon-Hee Lee Jong Bong Park Jun-Sub Jung Sang-Soo Lee | 2017 | Chinese Journal of Natural Medicines2017，15，8： | 6 |
| 14 | Endoscopic ultrasound guided thrombin injection of angiographically occult pancreatitis associated visceral artery pseudoaneurysms:Case series显示文摘Pseudoaneurysm is a known complication of pancreatitis associated with significant mortality and morbidity. Imaging plays an important role in the diagnosis and management. Computed tomography(CT) helps localize the lesion and the severity of the background pancreatitis but digital subtraction angiography with coil embolization is recommended to avoid bleeding and inadvertent surgery. However, in cases where angiographic coil embolization is not feasible due to technical reasons, thrombin injection via CT or ultrasound guidance remains a viable option and often described in literature. In this series, effort has been made to highlight the role of endoscopic ultrasound guided thrombin instillation especially in patients with poorly visualized pseudoaneurysm on ultrasound thereby avoiding surgery and the associated mortality and morbidity. | Shivanand Gamanagatti Usha Thingujam Pramod Garg Surajkumar Nongthombam Nihar Ranjan Dash | 2015 | World Journal of Gastrointestinal Endoscopy2015，7，13： | 6 |
| 15 | Rock fragmentation control in opencast blasting显示文摘The blasting operation plays a pivotal role in the overall economics of opencast mines.The blasting subsystem affects all the other associated sub-systems,i.e.loading,transport,crushing and milling operations.Fragmentation control through effective blast design and its effect on productivity are the challenging tasks for practicing blasting engineer due to inadequate knowledge of actual explosive energy released in the borehole,varying initiation practice in blast design and its effect on explosive energy release characteristic.This paper describes the result of a systematic study on the impact of blast design parameters on rock fragmentation at three mines in India.The mines use draglines and shoveledumper combination for removal of overburden.Despite its pivotal role in controlling the overall economics of a mining operation,the expected blasting performance is often judged almost exclusively on the basis of poorly defined parameters such as powder factor and is often qualitative which results in very subjective assessment of blasting performance.Such an approach is very poor substitutes for accurate assessment of explosive and blasting performance.Ninety one blasts were conducted with varying blast designs and charging patterns,and their impacts on the rock fragmentation were documented.A high-speed camera was deployed to record the detonation sequences of the blasts.The efficiency of the loading machines was also correlated with the mean fragment size obtained from the fragmentation analyses. | P.K.Singh M.P.Roy R.K.Paswan Md.Sarim Suraj Kumar Rakesh Ranjan Jha | 2016 | Journal of Rock Mechanics and Geotechnical Engineering2016，8，2： | 5 |
| 16 | A review on dump slope stabilization by revegetation with reference to indigenous plant显示文摘The waste,subgrade ROM and fine dumps of iron ore mines are characterized by high rock fragment contents,low moisture retention capacity,higher bulk density,low nutrients,lower pH and elevated metal concentrations.Use of suitable revegetation programme,that require the selection of right type of plants to be used vis-à-vis the site condition and characteristics,can enhance the long-term stability,both mechanical and ecological,of dumps(waste,subgrade ROM and fines)through providing vegetative cover to control soil erosion and gully formation,consolidation of dump top and side surfaces,binding the loose particles through intricate roof system,etc.This paper overviews the roles of revegetation programme that can be used where vegetation is considered to be the long-term answer to slope protection and erosion control.Various revegetation processes like Coir matting,lemon grass,vetiver grass and indigenous plant may find a wide range of usage in iron ore mines for dump stabilization.The Miyawaki method of plantation is more effective than the conventional method of plantation.This will lead to co-existence of plants,and as a matter of fact each plant draws from the other vital nutrients and they grow to become strong and healthy.The Miyawaki plantation technique aims at“survival of the fittest”,and the area which undergone such plantation has an ecology of their own.The indigenous plant has good binding capacity and helps to control soil erosion as well as improve the dump stability.These indigenous plant species include Shorea robusta(Sal),Dalbergia sisoo(Shisham),Karanj and Azadirachta(Neem).The growth of indigenous plants is dependent upon the soil quality as well as the organic matter of the dump material.The leaf debris plays an important role for improving the organic matter of the dump material to successfully implement the revegetation programme. | Vibhash Ranjan Phalguni Sen Dheeraj Kumar Arjun Sarsawat | 2015 | Ecological Processes2015，4，1： | 5 |
| 17 | Fracture Union in Closed Interlocking Nail in Humera Shaft Fractures显示文摘 | Ramji Lal Sahu Raini Ranjan Ajay Lal | 2015 | Chinese Medical Journal2015，，11： | 5 |
| 18 | 有机微量元素对家畜免疫、健康、生产和繁殖的影响显示文摘<正>矿物质在动物一生中起着多种非常重要的作用。与其他营养素相比,其需要量很低,日粮缺乏微量元素会导致动物生产性能下降20%~30%。因此在生产实践中通常添加微量元素,以确保动物快速生长,提高繁殖性能并增强免疫应答能力。目前在动物饲料中通常添加无机盐形式的微量元素,如硫酸盐和氯化物,但无机来源的微量元素生物利用率与饲料和草料来源的矿物质并不完全等同。最新研究进展表明,如果以有机形式补充,微量元素的吸收和利用率会更高。矿物质在动物一生中起着多种非常重要的作用。与其他营养素相比,其需要量很低,日粮缺乏微量元素会导致动物生产性能下降20%~30%。因此在生产实践中通常添加微量元素,以确保动物快速生长,提高繁殖性能并增强免疫应答能力。 | 张江 Ranjan Kumar Mohanta Anil Kumar Garg | 2015 | 国外畜牧学(猪与禽)2015，0，2： | 5 |
| 19 | 抗生素硫酸钙结合Ilizarov技术治疗胫骨骨折相关感染的疗效分析显示文摘分析抗生素硫酸钙结合Ilizarov技术治疗胫骨骨折相关感染的临床疗效。回顾性自2017年09月至2019年02月共收治Cierny-MaderⅣ型胫骨骨折相关感染患者12例,在彻底清创的前提下,予以抗生素硫酸钙填充骨缺损区,并应用Ilizarov技术治疗骨缺损,术后进行定期复查与随访。随访结果显示,所有患者均达到骨性愈合,无感染复发。根据Paley骨性结果评分结果:优6例,良5例,可1例;Paley功能评分结果:优5例,良6例,可1例。结果说明,在彻底清创的前提下,抗生素硫酸钙结合Ilizarov技术是一种治疗Cierny-MaderⅣ型胫骨骨折相关感染的有效方法。 | Rajiv Ranjan 彭斌 谭文甫 李正茂 何敏 | 2020 | 中南医学科学杂志2020，48，3： | 5 |
| 20 | All ileo-cecal ulcers are not Crohn's:Changing perspectives of symptomatic ileocecal ulcers显示文摘AIM To investigated clinical,endoscopic and histopathological parameters of the patients presenting with ileocecal ulcers on colonoscopy.METHODS Consecutive symptomatic patients undergoing colonoscopy,and diagnosed to have ulcerations in the ileocecal(I/C) region,were enrolled.Biopsy was obtained and theirclinical presentation and outcome were recorded.RESULTS Out of 1632 colonoscopies,104 patients had ulcerations in the I/C region and were included in the study.Their median age was 44.5 years and 59% were males.The predominant presentation was lower GI bleed(55,53%),pain abdomen ± diarrhea(36,35%),fever(32,31%),and diarrhea alone(9,9%).On colonoscopy,terminal ileum was entered in 96(92%) cases.The distribution of ulcers was as follows:Ileum alone 40%(38/96),cecum alone 33%(32/96),and both ileum plus cecum 27%(26/96).The ulcers were multiple in 98% and in 34% there were additional ulcers elsewhere in colon.Based on clinical presentation and investigations,the etiology of ulcers was classified into infective causes(43%) and noninfective causes(57%).Fourteen patients(13%) were diagnosed to have Crohn's disease(CD).CONCLUSION Non-specific ileocecal ulcers are most common ulcers seen in ileo-cecal region.And if all infections are clubbed together then infection is the most common(> 40%) cause of ulcerations of the I/C region.Cecal involvement and fever are important clues to infective cause.On the contrary CD account for only 13% cases as a cause of ileo-cecalulcers.So all symptomatic patients with I/C ulcers on colonoscopy are not Crohn's. | Jay Toshniwal Romesh Chawlani Amit Thawrani Rajesh Sharma Anil Arora Hardik L Kotecha Mohan Goyal Vijendra Kirnake Pankaj Jain Pankaj Tyagi Naresh Bansal Munish Sachdeva Piyush Ranjan Mandhir Kumar Praveen Sharma Vikas Singla Rinkesh Bansal Vineet Shah Sunita Bhalla Ashish Kumar | 2017 | World Journal of Gastrointestinal Endoscopy2017，9，7： | 5 |
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