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| 1 | Targeted therapy of gastrointestinal stromal tumours显示文摘Gastrointestinal stromal tumours(GISTs) are mesen-chymal neoplasms originating in the gastrointestinal tract, usually in the stomach or the small intestine, and rarely elsewhere in the abdomen. The malignant potential of GISTs is variable ranging from small lesions with a benign behaviour to fatal sarcomas. The majo-rity of the tumours stain positively for the CD-117(KIT) and discovered on GIST-1(DOG-1 or anoctamin 1) expression, and they are characterized by the presence of a driver kinase-activating mutation in either KIT or platelet-derived growth factor receptor α. Although surgery is the primary modality of treatment, almost half of the patients have disease recurrence following surgery, which highlights the need for an effective adjuvant therapy. Traditionally, GISTs are considered chemotherapy and radiotherapy resistant. With the advent of targeted therapy(tyrosine kinase inhibitors), there has been a paradigm shift in the management of GISTs in the last decade. We present a comprehensive review of targeted therapy in the management of GISTs. | Ashish Jakhetiya Pankaj Kumar Garg Gaurav Prakash Jyoti Sharma Rambha Pandey Durgatosh Pandey | 2016 | World Journal of Gastrointestinal Surgery2016,8,5: | 14 |
| 2 | Preoperative therapy in locally advanced esophageal cancer显示文摘Esophageal cancer is an aggressive malignancy associated with dismal treatment outcomes. Presence of two distinct histopathological types distinguishes it from other gastrointestinal tract malignancies. Surgery is the cornerstone of treatment in locally advanced esophageal cancer(T2 or greater or node positive); however, a high rate of disease recurrence(systemic and loco-regional) and poor survival justifies a continued search for optimal therapy. Various combinations of multimodality treatment(preoperative/perioperative, or postoperative; radiotherapy, chemotherapy, or chemoradiotherapy) are being explored to lower disease recurrence and improve survival. Preoperative therapy followed by surgery is presently considered the standard of care in resectable locally advanced esophageal cancer as postoperative treatment may not be feasible for all the patients due to the morbidity of esophagectomy and prolonged recovery time limiting the tolerance of patient. There are wide variations in the preoperative therapy practiced across the centres depending upon the institutional practices, availability of facilities and personal experiences. There is paucity of literature to standardize the preoperative therapy. Broadly, chemoradiotherapy is the preferred neo-adjuvant modality in western countries whereas chemotherapy alone is considered optimal in the far East. The present review highlights the significant studies to assist in opting for the best evidence based preoperative therapy(radiotherapy, chemotherapy or chemoradiotherapy) for locally advanced esophageal cancer. | Pankaj Kumar Garg Jyoti Sharma Ashish Jakhetiya Aakanksha Goel Manish Kumar Gaur | 2016 | World Journal of Gastroenterology2016,22,39: | 13 |
| 3 | Effect of preoperative biliary drainage on outcome of classical pancreaticoduodenectomy显示文摘AIM: To investigate the role of preoperative biliary drainage (PBD) in the outcome of classical pancreaticodu odenectomy. METHODS: A 10-year retrospective data analysis was performed on patients (n = 48) undergoing pancreaticoduodenectomy from March 1994 to March 2004 in department of surgery at SMS medical college, Jaipur, India. Demographic variables, details of preoperative stenting, operative procedure and post operative complications were noted. RESULTS: Preoperative biliary drainage was performed in 21 patients (43.5%). The incidence of septic complications was significantly higher in patients with biliary stent placement (P < 0.05, 0 vs 4). This group of patients also had a significantly higher minor biliary leak rate. Mortality and hospital stay in each group was comparable. CONCLUSION: Within this study population the use of PBD by endoscopic stenting was associated with a high incidence of infective complications. These findings do not support the routine use of biliary stenting in patients prior to pancreatico-duodenectomy. | Chandra Shekhar Bhati Chandrashekhar Kubal Pankaj Kumar Sihag Ankur Atal Gupta Raj Kamal Jenav Nicholas G Inston Jagdish M Mehta | 2007 | World Journal of Gastroenterology2007,13,8: | 12 |
| 4 | Autochthonous halotolerant plant growth-promoting rhizobacteria promote bacoside A yield of Bacopa monnieri(L.)Nash and phytoextraction of salt-affected soil显示文摘Phytoremediation is a promising approach for reclamation of salt-affected soil.Phytoextraction is the most commonly used process,which exploits plants to absorb,immobilize,and accumulate salt in their shoots.In this study,halotolerant plant growth-promoting rhizobacteria(PGPR)were isolated from the rhizosphere of wild grasses growing naturally in salt-affected areas of Lucknow,Uttar Pradesh(India)and were tested for their efficacies of salt-tolerance and plant growth-promoting(PGP)abilities.Based on 16S rRNA sequences,the most efficient halotolerant isolates possessing PGP traits were identified as Pseudomonas plecoglossicida(KM 233646),Acinetobacter calcoaceticus(KM 233647),Bacillus flexus(KM 233648),and Bacillus safensis(KM 233652).Application of these isolates as bio-inoculants significantly(P<0.05)increased the growth and bacoside A yield of a medicinal plant,Bacopa monnieri(L.)Nash,grown on natural salt-affected soil.The phytoremediation of salt-affected soil was evident by the substantial increase in shoot Na^+:K^+ratio of bio-inoculant-treated plants.When compared to un-inoculated control plants,the soil physico-chemical properties of bio-inoculant-treated plants were improved.The shoot and root biomass(fresh and dry weights),soil enzymes,and soil nutrient parameters showed significant positive correlations with the shoot Na+:K+ratio.Consequently,the halotolerant PGPR screened in this study could be useful for the reclamation of saline soils concomitant with improved plant growth and bacoside A yield. | Umesh PANKAJ Durgesh Narain SINGH Pooja MISHRA Pooja GAUR C.S.Vivek BABU Karuna SHANKER Rajesh Kumar VERMA | 2020 | Pedosphere2020,30,5: | 9 |
| 5 | Use of a Bioaugmented Organic Soil Amendment in Combination with Gypsum for Withania somnifera Growth on Sodic Soil显示文摘Limited availability of organic matter is a problem to sustain crop growth on sodic soil. Organic soil amendments are a costeffective source of nutrients to enhance crop growth. A field study was conducted to evaluate the effect of an organic soil amendment bioaugmented with plant growth-promoting fungi(SF_(OA) ) in combination with gypsum on soil properties and growth and yield attributes of Withania somnifera, one of the most valuable crops of the traditional medicinal system in the world, on a sodic soil at the Aurawan Research Farm of CSIR-National Botanical Research Institute, Lucknow, India. The SF_(OA) used was prepared by pre-enriching farm waste vermicompost with plant growth-promoting fungi before mixing with pressmud and Azadirachta indica seed cake. The application of SF_(OA) at 10 Mg ha^(-1)after gypsum(25.0 Mg ha^(-1)) treatment significantly(P < 0.05) increased root length(by 96%) and biomass(by 125%) of Withania plants compared to the control without SF_(OA) and gypsum. Similarly, the highest withanolide contents were observed in leaves and roots of Withania plants under 10 Mg ha^(-1)SF_(OA) and gypsum. Combined application of SF_(OA) and gypsum also improved physical, chemical and enzymatic properties of the soil, with the soil bulk density decreasing by 25%, water-holding capacity increasing by 121%, total organic C increasing by 90%, p H decreasing by 17% and alkaline phosphatase, β-glucosidase, dehydrogenase and cellulase activities increasing by 54%, 128%, 81% and 96%, respectively, compared to those of the control. These showed that application of the SF_(OA) tested in this study might reclaim sodic soil and further support Withania cultivation and results were better when the SF_(OA) was applied after gypsum treatment. | Manjul GUPTA Pankaj Kumar SRIVASTAVA SHIKHA Abhishek NIRANJAN Shri Krishna TEWARI | 2016 | Pedosphere2016,26,3: | 7 |
| 6 | A GFP-based bacterial biosensor with chromosomally integrated sensing cassette for quantitative detection of Hg(Ⅱ) in environment显示文摘A mercury biosensor was constructed by integrating biosensor genetic elements into E. coli JM109 chromosome in a single copy number, using the attP/attB recombination mechanism of λ phage. The genetic elements used include a regulatory protein gene (merR) along with operator/promoter (O/P) derived from the mercury resistance operon from pDU1358 plasmid of Serratia marcescens. The expression of reporter gene gfp is also controlled by merR/O/P. Integration of the construct into the chromosome was done to increase the stability and precision of the biosensor. This biosensor could detect Hg(Ⅱ) ions in the concentration range of 100–1700 nmol/L, and manifest the result as the expression of GFP. The GFP expression was significantly different (P 0.05) for each concentration of inducing Hg(Ⅱ) ions in the detection range, which reduces the chances of misinterpretation of results. A model using regression method was also derived for the quantification of the concentration of Hg(Ⅱ) in water samples. | Himanshu Priyadarshi Absar Alam Gireesh-Babu P Rekha Das Pankaj Kishore Shivendra Kumar Aparna Chaudhari | 2012 | Journal of Environmental Sciences2012,24,5: | 6 |
| 7 | 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 |
| 8 | Surface defect engineering of metal oxides photocatalyst for energy application and water treatment显示文摘Despite metal oxides offer excellent characteristics in the field of photocatalysis,they often suffer from charge carrier recombination as well as limited visible response,which indeed reduce the charge kinetics process and ultimately reduce the photocatalytic output.Defect engineering is a sophisticated technique to manufacture defects and alter the geometric structure and chemical environment of the host.The present study provides an all-inclusive outline of recent developments on the classification of metal oxide defects based on the dimensions of a host crystal lattice.Precisely,surface modification of metal oxides through 0D(point),1D(line),2D(planar),and 3D(volume)defects with their subsequent mechanism and impact on photocatalytic performance are presented.By wisely amending the morphology(cores along with the shells)and electronic structure of metal oxide photocatalysts(TiO_(2),ZnO,Bi_(2)O_(3),Fe_(2)O_(4) etc.)through different attuned and veritable approaches,their photocatalytic activity can be substantially improved.Optimal studies on defect engineering not only expose the altered physicochemical features but also modulate the electron-hole pair dynamics,stability,and active radical production for various photoredox reactions.Altered atomic,as well as electronic configuration,facilitated a photocatalyst material to have different optical features,adsorption properties along with improved carrier transfer as well as isolation rate.Thus,the systematic exploration of photocatalytic rudiments of defect rich metal oxide for various applications such as H_(2) evolution,CO_(2) reduction,pollutant degradation,and bacterial disinfection could bring significant research advancement in this field. | Pankaj Raizada Vatika Soni Abhinandan Kumar Pardeep Singh Aftab Aslam Parwaz Khan Abdullah M.Asiri Vijay Kumar Thakur Van-Huy Nguyen | 2021 | Journal of Materiomics2021,7,2: | 4 |
| 9 | 聚叶钗子股—中国兰科新记录种及形态特征增补(英文)显示文摘报道了产自滇东南的中国兰科植物一新记录种——聚叶钗子股(Luisia appressifolia Averyanov)。研究发现,已往文献报道该种时,对其花部特征(如花颜色、萼片及花瓣形状、大小等)的描述仅依据腊叶标本,因标本严重失水导致描述信息不准或缺失。本文根据新鲜植株和花部材料对该种相关形态特征给予了补充。 | 吴训锋 罗勇 Pankaj Kumar 刘强 | 2019 | 植物科学学报2019,37,1: | 3 |
| 10 | Particle Swarm Optimization Based Support Vector Regression for Blind Image Restoration显示文摘This paper presents a swarm intelligence based parameter optimization of the support vector machine (SVM) for blind image restoration. In this work, SVM is used to solve a regression problem. Support vector regression (SVR) has been utilized to obtain a true mapping of images from the observed noisy blurred images. The parameters of SVR are optimized through particle swarm optimization (PSO) technique. The restoration error function has been utilized as the fitness function for PSO. The suggested scheme tries to adapt the SVM parameters depending on the type of blur and noise strength and the experimental results validate its effectiveness. The results show that the parameter optimization of the SVR model gives better performance than conventional SVR model as well as other competent schemes for blind image restoration. | Ratnakar Dash Pankaj Kumar Sa Banshidhar Majhi | 2012 | Journal of Computer Science & Technology2012,27,5: | 3 |
| 11 | 氯屈膦酸二钠-超顺磁性氧化铁脂质体减轻重症急性胰腺炎肾损伤(英文)显示文摘研究目的:探讨氯屈膦酸二钠-超顺磁性氧化铁(SPIO)脂质体对重症急性胰腺炎(SAP)肾损伤的保护作用。创新要点:围绕SAP并发多器官损伤这一核心问题,联系巨噬细胞在SAP发病过程中的作用,使用纳米脂质体携带氯屈膦酸二钠及SPIO,以及利用自体巨噬细胞对SAP时多器官损伤的定性靶向性以及磁性纳米颗粒的超顺磁性,应用磁共振成像(MRI)对SAP并发多器官损伤进行早期诊断。结合使用氯屈膦酸二钠,使其促进巨噬细胞的凋亡,减少其在急性胰腺炎早期产生炎症介质,阻止全身性炎症反应的进程,从而实现对多器官损伤的保护作用。研究方法:采用胰腺被膜下均匀注射5%牛磺胆酸钠制作SAP模型。SD大鼠48只,随机分为对照组(C组)、空白SPIO脂质体组(P组)和氯屈膦酸二钠+SPIO脂质体组(T组)。P组和T组大鼠制作SAP模型。制模2 h和6 h后取肠系膜上静脉血液,检测各组大鼠血清中淀粉酶、尿素氮、血肌酐和肿瘤坏死因子-α的含量,观察胰腺及肾组织的病理学变化及进行病理评分,通过检测肾组织的TUNEL染色及CD68表达研究氯屈膦酸二钠-超顺磁性氧化铁脂质体对肾组织巨噬细胞凋亡的影响并进行MRI诊断。重要结论:氯屈膦酸二钠-超顺磁性氧化铁脂质体可选择性清除单核/巨噬细胞,减少炎症介质释放,对SAP大鼠胰腺及肾损伤有保护作用。SPIO可作为MRI示踪。 | Sheng-chun DANG Yan-hua ZENG Ping-jiang WANG Bao-ding CHEN Rong-fang CHEN Arun KUMAR SINGH Pankaj KUMAR Shu FENG Lei CUI Hao WANG Jian-xin ZHANG | 2014 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2014,15,6: | 2 |
| 12 | Sitagliptin,sitagliptin and metformin,or sitagliptin and amitriptyline attenuate streptozotocin-nicotinamide induced diabetic neuropathy in rats显示文摘Diabetic neuropathies are a family of nerve disorders caused by diabetes.Symptoms of the disease include nerve palsy,mononeuropathy,mononeuropathy multiplex,diabetic amyotrophy,painful polyneuropathy,autonomic neuropathy,and thoracoabdominal neuropathy.In this study,type 2 diabetes in rats was induced with nicotinamidestreptozotocin.Drug treatment was initiated on the d 15,with the combination regimen of metformin,pioglitazone and glimipiride or metformin and sitagliptin or sitagliptin,amitriptyline and sitagliptin and led to significantly improved glycemic control,increased grip strength and paw jumping response on d 21,28 and 35(P < 0.001).Significant increases in blood protein levels and decreases in urinary protein levels were observed in the animals treated with the different regimens on d 21,28 and 35(P < 0.001).Combined treatment of streptozotocin and nicotinamide caused marked degeneration of nerve cells,while administration of metformin and sitagliptin showed tissue regeneration and no body weight gain.In conclusion,treatment with sitagliptin and sitagliptin combined with metformin or amitriptyline results in no body weight gain,but causes an increase in grip strength and pain sensitivity,exhibits neural protection,and reverses the alteration of biochemical parameters in rats with streptozotocin-nicotinamide induced type 2 diabetes. | Ashish Kumar Sharma Akash Sharma Rita Kumari Kunal Kishore Divya Sharma Bharthu Parthsarthi Srinivasan Ashok Sharma Santosh Kumar Singh Samir Gaur Vijay Singh Jatav Prashant Sharma Varnika Srivastava Sneha Joshi Megha Joshi Prashant Kumar Dhakad Davender Singh Kanawat Akanksha Mishra Anil Sharma Dharmendra Singh Ravinder Pal Singh Himmat Singh Chawda Rambir Singh Sachin Kumar Raikwar Muneem Kumar Kurmi Pankaj Khatri Ashutosh Agarwal Arshee Munajjam | 2012 | The Journal of Biomedical Research2012,26,3: | 2 |
| 13 | The ubiquitin-proteasome system显示文摘 | Dipankar Nandi Pankaj Tahiliani Anujith Kumar Dilip Chandu | 2006 | Journal of Biosciences2006,,1: | 2 |
| 14 | 变时滞不确定Lurie系统的时滞分布依赖鲁棒稳定性分析(英文)显示文摘In this paper, the problem of robust absolute stability of Lurie system with probabilistic time-varying delay and normbounded parametric uncertainty is considered. The time delay variation range is divided into two sub-intervals. By considering the probability distribution of the time-varying delay between the two sub-intervals and the knowledge of the delay variation range, a novel linear matrix inequalities (LMIs) based stability condition is derived by defining a Lyapunov Krasovskii functional. It is illustrated with the help of numerical examples that the derived stability criteria can lead to less conservative results as compared to the results obtained by the traditional method of using the delay variation range information only. | MUKHIJA Pankaj KAR Indra Narayan BHATT Rajendra Kumar Purushottam | 2012 | 自动化学报2012,38,7: | 2 |
| 15 | Dengue:epidemiology,prevention and pressing need for vaccine development显示文摘Dengue fever is a mosquito born viral infection,and the complicated form of dengue is dengue hemorrhagic fever(DHF).In the recent decades incidence and distribution of dengue has increased dramatically.Dengue viruses belong to family flaviviridae with four serotypes and are transmitted mainly by mosquito Aedes aegypti.Today almost two-fifth of world’s population (2.5 million) is at risk of dengue and no specific antiviral drug or vaccine is available against it.Uncontrolled population growth in Africa and South East Asia has increased number of susceptible hosts in urban and semi urban areas.About 40%of world population resides in the high risk area for dengue transmission.According to latest estimates by WHO,yearly 50 to 100 million infections occur globally,this includes around 500 000 DHF and 22 000 deaths,mostly among children.Only symptomatic treatment in the form of analgesic,antipyretics and body fluid management is provided to the patient.Prevention strategies mainly focus on two approaches, firsdy on activities to control vector and secondly on activities to protect human from mosquito bite but there is always concerns regarding their sustainably and effectiveness.Theoretically development of an effective dengue vaccine is feasible and production of an effective and affordable vaccine could be a viable option to save humans from this dreadful disease. Conceptually vaccine production is possible,but it has to be tetravalent,providing immunity against all serotypes.Few candidate vaccines are in advance stage of their development:however international cooperation is needed to make these vaccines available on cheaper rates to the poor and vulnerable countries.Objective of this review is to discuss various aspects related to dengue,its epidemiology,available preventive methods,need for vaccine and challenges in its development. | Kuldeep Kumar Pankaj Kumar Singh Juhi Tomar Swati Baijal | 2010 | Asian Pacific Journal of Tropical Medicine2010,3,12: | 2 |
| 16 | A review on emerging smart technological innovations in healthcare sector for increasing patient's medication adherence显示文摘In this paper,we reviewed the various advanced technologies and methods that could help patients for measuring ad herence of patients.There exist intelligent technologies that are available for measuring medication adherence,including medication event monitoring system(MEMS@),smart blister packs,radio frequency identifcation(RFID)embedded smart drawers,and wisely aware RFID dosage(WARD)system,Utilization of these advanced technologies and systems have aided in enhancing the adherence to a greater extent.For example,MEMS@refers to the electronic cap that counts the number of bottles opened,but it can be employed only with bottles.Smart blisters are pharmaceutical packagings that possess the capability of monitoring when a pill or tablet is taken out of its packing.All those intelligent technologies can help in active monitoring of patients regarding adherence and capable of eradicating various medication errors due to which adherence is affected. | Pankaj Pal Sharda Sambhakar Vivek Dave Shailendra Kumar Paliwal Sarvesh Paliwal Monika Sharma Aadesh Kumare Nidhi Dhama | 2021 | Global Health Journal2021,5,4: | 2 |
| 17 | 12毫米厚铝合金板的搅拌摩擦焊研究(英文)显示文摘Most of the investigations regarding friction stir welding(FSW)of aluminum alloy plates have been limited to about 5 to 6mm thick plates.In prior work conducted the various aspects concerning the process parameters and the FSW tool geometry were studied utilizing friction stir welding of 12 mm thick commercial grade aluminum alloy.Two different simple-tomanufacture tool geometries were used.The effect of varying welding parameters and dwell time of FSW tool on mechanical properties and weld quality was examined.It was observed that in order to achieve a defect free welding on such thick aluminum alloy plates,tool having trapezoidal pin geometry was suitable.Adequate tensile strength and ductility can be achieved utilizing a combination of high tool rotational speed of about 2000 r/min and low speed of welding around 28 mm/min.At very low and high dwell time the ductility of welded joints are reduced significantly. | Deepati Anil Kumar Pankaj Biswas Sujoy Tikader M. M. Mahapatra N. R. Mandal | 2013 | Journal of Marine Science and Application2013,12,4: | 2 |
| 18 | Giant exophytic renal angiomyolipoma masquerading as a retroperitoneal liposarcoma: A case report and review of literature显示文摘A 42-years-old lady, presented with a large retroperitoneal mass which was preoperatively diagnosed as a retroperitoneal liposarcoma following an image guided core biopsy. She underwent a margin-negative resection of the retroperitoneal mass(multi visceral resection-enbloc excision of the retroperitoneal mass with a left nephrectomy and a segmental descending colectomy). The final histopathological examination of the resected specimen confirmed an exophytic renal angiomyolipoma(AML) which was extending into the retroperitoneum. AML is a rare benign tumor arising most commonly from the kidney. It can sometimes present as a diagnostic challenge as it mimics a retroperitoneal liposarcoma or a fat-containing renal cell carcinomas closely. We present this case to share our experience of managing a case of giant exophytic AML which resembled retroperitoneal liposarcoma closely and resulted into an aggressive surgery. | Gopal Sharma Ayush Jain Prerit Sharma Sonal Sharma Vinita Rathi Pankaj Kumar Garg | 2018 | World Journal of Clinical Oncology2018,9,7: | 2 |
| 19 | Texture evaluation in AZ31/AZ31 multilayer and AZ31/AA5068 laminar composite during accumulative roll bonding显示文摘This article presents the texture development of magnesium AZ31 alloy in the accumulative roll bonded(ARB) AZ31/AZ31 multilayer and AZ31/AA5086 laminate composite.The comparative study demonstrates that the texture evolution in AZ31 in a multilayer system is strongly influenced by the interfaces.A typical basal texture of AZ31 has been observed in AZ31/AZ31 multilayer with texture intensity increased with the rolling deformation.Presence of AZ31/AA5086 interface in the laminate composite leads to a tilted basal texture along the rolling direction(RD) in AZ31 alloy.The texture intensity of composite increased initially with rolling reduction and weakened at the higher rolling strain.Weakening of texture in AZ31 during the laminate processing at higher strain has been attributed to the development of wavy interfaces in AZ31/AA5086 laminate. | Pankaj Kumar Aviral Madhup Prasad RKalvala Satyam Suwas | 2020 | Defence Technology(防务技术)2020,16,3: | 2 |
| 20 | In-situ observation and transport modelling of arsenic in Gangetic plain,India显示文摘The focus of this study is to investigate the arsenic movement and impacts on the residual concentrations on groundwater pollution load.The Gangetic plain area in the Ballia,Uttar Pradesh is selected as study area,which is also reported to extreme arsenic pollution in soil-water system.A modelling approach is developed to assess the arsenic flux in partially saturated zone using data of soil texture,soil hydraulic properties and stratigraphy.Soil type,slope,and land-use cover is considered for estimating the transient flux at the top boundary from daily precipitation and evapotranspiration data of the study area.Solute transport in the subsurface is predicted by the mass transfer equation,which is derived by integrating Darcy's law with the equation of mass balance.The arsenic profiles of varying hydrogeological conditions associated with different locations in the study area are presented as breakthrough curves.The results shows that the arsenic transport is dominated by the advective flux and strongly depends on the soilmoisture flow conditions.Which may increases the arsenic load to underlaying groundwater resources.The simulated results suggest that mobility plays a vital role arsenic transport as well as on adsorbed arsenic concentration in subsurface.Likewise,the adsorption isotherms show that the high peak curve for Bairai and low at Sikarderpur.A higher pollution risk is observed in the Belthara Road,whereas a lower vulnerability is computed in the north and northeast regions.This study can help in strategising sustainable groundwater management and protection planning of identified regions of India. | Pankaj Kumar Gupta Pranjay Joshi Jahangeer | 2017 | Emerging Contaminants2017,3,4: | 2 |