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Validation of Competitive Ability of Diverse Canola Accessions against Annual Ryegrass under Glasshouse and Field Conditions

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Open Journal of Genetics 2020年第2期10卷 17-34页

作者： Nawar Shamaya Harsh Raman Maheswaran rohan Jim Pratley Hanwen Wu NSW Department of Primary Industries Wagga Wagga Agricultural Institute PMB Wagga Wagga NSW Australia Graham Centre for Agricultural Innovation Charles Sturt University Wagga Wagga NSW Australia

Weeds are a major constraint in canola (Brassica napus L.) production worldwide, as they cause significant reductions in seed yield and quality. Crop interference is one of the approaches to tackle weed infestation along with other agronomic interventions. In Australia, studies have shown genetic variation in the canola capability to suppress annual ryegrass (Lolium rigidum Gaudin) in the field and under in vitro conditions. Early-season crop biomass accumulation and greater plant height are desired attributes for suppression weeds in canola. However, the canola ideotype for interference traits against this weed has not been studied under glasshouse conditions. In this study, we compared the competitive ability of 26 canola genotypes against annual ryegrass under both glasshouse and field conditions. Five canola genotypes consistently showed the ability to suppress growth of annual ryegrass. Both at glasshouse and field conditions, the shoot biomass, largely contributed by leaf biomass, was significantly associated with suppression ability. Our results suggest that a glasshouse-based evaluation approach can be used to determine the suppressive ability of advanced breeding lines for suppression of ryegrass growth. Based on our analysis, we suggest that initial screening of large collections of germplasm can be conducted under glasshouse conditions, with selected genotypes further evaluated in the field.

关键词： Brassica napus Weed-Crop Competition Crop Interference Ideotype

Identification of Optimum Composition and Mechanical Properties of Al-Ni Metal Matrix Composite

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Journal of Minerals and Materials Characterization and Engineering 2015年第4期3卷 326-334页

作者： Manoj Kumar Pal Simranjeet Singh Sandhu rohan Kalia Arka Ghosh Department of Mechanical Engineering SRM University (NCR Campus) Ghaziabad India ISBR Business School Bangalore India

Composites are materials that are made up of two or more chemically dissimilar phases. In this project aluminum was chosen as matrix material because it was inexpensive, light-weight, strong, tough and corrosion resistant. For the main load bearing phase it was hard, corrosion resistant at room temperature and thermally stable. The stir casting method was used because it was cost-effective and easy, and the particulate reinforcement (nickel) was uniformly distributed throughout the matrix phase. Sand moulding was used to cast the specimens. Specimens with 10, 20, 30 and 40 percentage Nickel were tested and the optimal specimen contained 20% Nickel. The Brinell hardness of Al + 20% Ni increased by 14.80%, Rockwell hardness increased by 2.43%, ultimate tensile strength increased by 1.003% and thermal conductivity of Al + 20% Ni decreased by 24.98% with respect to Aluminum.

关键词： Metal Matrix Composite Aluminum (Al) Nickel (Ni) Fabrication Testing Composite

Migration of intra-aortic balloon pump causing obstruction of the superior mesenteric artery

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Journal of Geriatric Cardiology 2022年第11期19卷 928-929页

作者： Sharan Malkani Jose Ruiz Smruti Desai Smit Paghdar Parag C.Patel Juan Carlos Leoni Moreno Melissa Lyle Maedeh Ganji Daniel Yip rohan M.Goswami Division of Transplant Cardiology Mayo ClinicJacksonvilleFLUSA Division of Cardiology First Coast Heart&VascularJacksonvilleFLUSA

Axillary intra-aortic balloon pump(IABP)used has increased in the recent few years after UNOs allocation system ***’s design and counterpulsation mechanism is highly regarded for its safety profile,simplicity and relative ease in management and ***,despite continuous innovative efforts,the potential for complications still *** Benchmark registry is widely regarded as the tool for monitoring the evolving practice of *** most common complications reported are balloon perforation,bleeding,migration,limb *** continuous innovative efforts,the potential for complications still exists.

关键词： balloon IABP pump

Performance Assessment of Darrieus Turbine with Modified Trailing Edge Airfoil for Low Wind Speeds

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Smart Grid and Renewable Energy 2017年第12期8卷 425-439页

作者： Palanisamy Mohan Kumar rohan Kulkarni Narasimalu Srikanth Teik-Cheng Lim Energy Research Institute Nanyang Technological University Singapore City Singapore School of Science and Technology Singapore University of Social Sciences Clementi Singapore

Darrieus wind turbines are simple lift based machines with exceptionally high efficiencies in terms of power coefficient compared to similar drag based vertical axis turbines. However, in low Reynolds numbers, a notable performance loss was reported. As a potential solution, truncated NACA 0018 airfoil (NACA 0018TC-39) has been introduced with baseline cavity modification to achieve better start-up characteristics and to enhance the low wind speed performance. The baseline cavity will provide an additional benefit of reverse drag at low TSR which is obligatory for low wind speed start-up. Numerical optimization has been carried out on the conceived airfoil NACA 0018TC-39 to find out the effective truncation percentage in terms of the chord. The numerical study has been extended to compare NACA 0018 and NACA 0018TC-39 airfoil for their aerodynamic performances in terms of lift, drag coefficients and separation characteristics. The NACA 0018TC-39 airfoil was incorporated within a non-swept straight bladed Darrieus turbine miniature to experimentally evaluate the performance in terms of dynamic power coefficient, dynamic torque coefficient and static torque coefficient and compared with conventional NACA 0018 airfoil at six different Reynolds numbers 178917, 193827, 208737, 223646, 238556 and 268376. The experimental contrast implied that NACA 0018TC-39 airfoil turbine yielded almost double power coefficients at low Reynolds number compared to conventional NACA 0018 airfoil without hampering its performance at higher Reynolds number.

关键词： Darrieus Wind Turbine Trailing Edge Cavity Low Wind Speed and Truncated Airfoil

p53 Expression in Triple Negative Breast Carcinomas: Evidence of Age-Related and Racial Differences

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Journal of Cancer Therapy 2012年第5期3卷 649-654页

作者： Simone Davion Megan Sullivan Stephen rohan Kalliopi P. Siziopikou Department of Pathology Breast Pathology Section Northwestern University Feinberg School of Medicine Chicago USA.

Triple negative breast carcinomas (TNBC), are defined by the absence of estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2) expression. The majority of TNBC are “basal-like”, a group originally defined by studies of mRNA gene expression profiles, but increasingly defined in the clinic by using surrogate markers such as CK 5/6. However, not all TNBC are basal-like. It is postulated that these subcategories of TNBC have distinct underlying biologies that drive their ultimate behavior, and response to treatment, with important implications for designing appropriate targeted therapies. In this study we report that within our cohort of 197 TNBC, distinct groups were identified that varied by CK 5/6 and p53 expression based on age and race. We propose that awareness of CK5/6 and p53 expression in younger and AA TNBC patients may facilitate identifying patients with unique tumor subtypes and may lead to better use of targeted therapies in this group of aggressive breast cancers.

关键词： Triple Negative Breast Cancer p53 Race Age

Severe IgA vasculitis with features of remitting seronegative symmetrical synovitis with pitting edema (RS3PE) syndrome in a 60‐year‐old male treated with plasmapheresis

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Rheumatology & Autoimmunity 2022年第2期2卷 98-101页

作者： Shawn Mathew rohan Goyal Nealansh Gupta Rauno Joks Internal Medicine Ringgold Standard InstitutionSUNY Downstate Health Sciences UniversityBrooklynNew YorkUSA SUNY Downstate Medical Center College of Medicine Ringgold Standard InstitutionBrooklynNew YorkUSA Allergy and Immunology Center for Allergy and Asthma ResearchSUNY Downstate Health Sciences UniversityBrooklynNew YorkUSA

Objective:To explore a possible association between systemic immunoglobulin A(IgA)vasculitis and RS3PE syndrome and to investigate specific treatment regimens for adults who present with IgA vasculitis with renal ***:The patient was treated with plasmapheresis and fresh frozen plasma(FFP)every other day with 1g methylprednisolone daily for three days followed by oral prednisone *** mofetil twice daily and trimethoprim‐sulfamethoxazole for Pneumocystis jirovecii prophylaxis was *** total the patient received two cycles of plasmapheresis and fresh frozen ***:The patient's renal function drastically improved with resolution of both abdominal pain and ***:We illustrate a possible association between systemic IgA vasculitis and RS3PE syndrome,and this case demonstrates IgA vasculitis with renal involvement that acutely resolved with high‐dose glucocorticoids and ***,our specific treatment regimen can be a potential standard of care for adults who present with IgA vasculitis with renal involvement.

关键词： IgA vasculitis plasmapheresis RS3PE syndrome

Gene Expression Changes and Signal Transduction Pathway Alterations in Primary Human Oral Epithelial Cells Exposed to Smokeless Tobacco Extracts

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American Journal of Plant Sciences 2014年第24期5卷 3558-3571页

作者： rohan Rajapakse Annesha Basu Sanam Shahid Michael P. Timko Department of Biology University of Virginia Charlottesville VA USA

Smokeless tobacco (ST), an alternative to smoking, has gained wide popularity among tobacco users. This study is conducted to determine the time course of gene expression associated with specific signaling pathways in human oral epithelial cells after exposure to smokeless tobacco extract (STE). A differentiated layer of epithelial cell is created as a way to mimic reasonably similar physiological atmosphere. A dose and time dependent response is observed for cell viability and cell proliferation assays indicating that this model system is responsive to the treatment. Expressions of 84 genes representing 18 different signal transduction pathways are quantitated. This is accomplished by using real-time polymerase chain reaction arrays at 1 h, 3 h, 6 h and 24 h time points following exposure to STE. Changes in gene expression are observed on many cellular processes including cell cycle regulation, cell adhesion, inflammation, apoptosis, and DNA breaks-down including Akt pathway activation. Short time exposure (1 h) leads more genes to down regulate whereas longer incubation time results in more genes up regulation. Most notable differences in the expression of genes during the course of treatment are BCL2A1, BIRC3, CCL20, CDK2, EGR1, FOXA2, HOXA1, IGFBP3, IL1A, IL-8, MMP10, NOS2, NRIP1, PTGS2, SELPLG and TNF-a. This study provides an insight on gene expression on oral epithelial cells as a result of STE exposure. This may also postulate greater understanding on biological effects and the mechanism of action of STE particularly at the transcriptional level.

关键词： Apoptosis Primary Oral Epithelial Cells RT-PCR Array Smokeless Tobacco Extract (STE) Transcriptome

Paracentesis in cirrhotics is associated with increased risk of 30-day readmission

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World Journal of Hepatology 2018年第6期10卷 425-432页

作者： Lindsay A Sobotka rohan M Modi Akshay Vijayaraman A James Hanje Anthony J Michaels Lanla F Conteh Alice Hinton Ashraf El-Hinnawi Khalid Mumtaz Department of Internal Medicine the Ohio State University Wexner Medical Center Division of Gastroenterology Hepatology and Nutrition the Ohio State Wexner Medical Center Division of Biostatistics College of Public Health the Ohio State University Department of Surgery the Ohio State Wexner Medical Center

AIM To determine the readmission rate, its reasons, predictors, and cost of 30-d readmission in patients with cirrhosis and *** A retrospective analysis of the nationwide readmission database(NRD) was performed during the calendar year 2013. All adults cirrhotics with a diagnosis of ascites,spontaneous bacterial peritonitis, or hepatic encephalopathy were identified by ICD-9 codes. Multivariate analysis was performed to assess predictors of 30-d readmission and cost of *** Of the 59597 patients included in this study, 18319(31%) were readmitted within 30 d. Majority(58%) of readmissions were for liver related reasons. Paracentesis was performed in 29832(50%) patients on index admission. Independent predictors of 30-d readmission included age 3 Elixhauser comorbidity(OR: 1.13; CI: 1.05-1.22), nonalcoholic cirrhosis(OR: 1.16; CI: 1.10-1.23), paracentesis on index admission(OR: 1.28; CI: 1.21-1.36) and having hepatocellular carcinoma(OR: 1.21; CI: 1.05; 1.39). Cost of index admission was similar in patients readmitted and not readmitted(P-value: 0.34); however cost of care was significantly more on 30 d readmission($30959 ± 762) as compared to index admission($12403 ± 378), P-value: < *** Cirrhotic patients with ascites have a 33% chance of readmission within 30-d. Younger patients, with public insurance, nonalcoholic cirrhosis and increased comorbidity who underwent paracentesis are at increased risk of readmission. Risk factors for unplanned readmission should be targeted given these patients have higher healthcare utilization.

关键词： Cirrhosis Readmission rates Paracentesis Ascites

On the Mathematical Modelling of Adaptive Darrieus Wind Turbine

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Journal of Power and Energy Engineering 2017年第12期5卷 133-158页

作者： Palanisamy Mohan Kumar Kulkarni rohan Ajit Narasimalu Srikanth Teik-Cheng Lim Energy Research Institute @Nanyang Technological University Singapore City Singapore School of Science and Technology Singapore University of Social Sciences Singapore City Singapore

Darrieus wind turbines are experiencing a renewed interest for their application in decentralized power generation and urban installation. Much attention and research efforts have been dedicated in the past to develop as an efficient standalone Darrieus turbine. Despite these efforts, these vertical axis turbines are still low in efficiency compared to the horizontal axis counterparts. The current architecture of the turbine and their inherent characteristics limit their application in low wind speed areas as confirmed experimentally and computationally by past research. To enable and extend their operation for weak wind flows, a novel design of Adaptive Darrieus Wind Turbine (ADWT) is proposed. The hybrid Darrieus Savonius rotor with dynamically varying Savonius rotor diameter based on the wind speed enables the turbine to start, efficiently operate and stop the turbine at high winds. As the wake of Savonius rotor has a profound impact on the power performance of the combined rotor, the wake of two buckets Savonius rotor in open and closed configuration is reviewed. The current study aims to develop an analytical model to predict the power coefficient and the influence of other design parameters on the proposed design. The formulated analytical model is coded in python, and the results are obtained for the 10 kW rotor. Parametric analysis on the chord length and the diameter of the closed Savonius rotor is performed in search of an optimized diameter to maximize the annual energy output. Blade torque and the rotor torque are evaluated with respect to azimuthal angle and compared with conventional Darrieus rotor. The computed results show that peak power coefficient of ADWT is 13% lower than the conventional Darrieus rotor at the rated wind speed of 10 m/s.

关键词： Wind Turbine Low Wind Analytical Model Darrieus Savonius Adaptive