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Effect of Temperature on Frost-Free Days and Length of Crop Growing Season across Southern Ontario

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American Journal of Climate Change 2023年第4期12卷 700-718页

作者： Ramesh Pall Rudra Rituraj Shukla Trevor Dickinson pradeep kumar Goel Jaskaran Dhiman School of Engineering University of Guelph Guelph Canada The Faculty of Agricultural and Environmental Sciences McGill University Montreal Canada

Climate change has an impact on various climatic variables. In this study our focus is mainly on temperature characteristics of climate parameter. In temperate and humid regions like southern Ontario, the effect of climate change on Frost-free days in winter is distinctive. The average annual temperature is going upward but the extreme increase is in the winter temperature. Winter average temperature is going up by about 2˚C. However, extreme daily minimum temperature is going up by more than 3˚C. This climate effect has a great impact on the nature of precipitation and length of frost-free days. The snowfall over winter months is decreasing and the rainfall is increasing. However, the number of frost-free days during late fall months, early winter months, late winter months and early spring months are increasing. This result reveals an increase in length of the growing season. This research focuses on the effect of change in climatic variables on Frost-free days in Southern Ontario. Therefore, special attention should be given to the effect of change in climate Frost-free conditions on length of crop growing in winter season for potential investigation.

关键词： Climate Change Minimum Temperature Frost-Free Days Snowfall Crop Growing Season Southern Ontario

Projective Changes between Generalized (α, β)-Metric and Randers Metric

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Advances in Pure Mathematics 2020年第5期10卷 312-321页

作者： pradeep kumar Madhu T. S. Sharath B. R. Department of Mathematics School of Engineering Presidency University Bengaluru India Department of Mathematics Sri Jagadguru Renukacharya College of Science Arts and Commerce Bengaluru India Department of Mathematics Vemana Institute of Technology Bengaluru India

Projective change between two Finsler metrics arises from Information Geom-etry. Such metrics have special geometric properties and will play an important role in Finsler geometry. The purpose of the present paper is to find a relation to characterize the projective change between generalized (α, β) - metric ( μ1, μ2 and μ3 ≠ 0 are constants) and Randers metric , where α and are two Riemannian metrics, β and are 1-forms. Further, we study such projective change when generalized (α, β) -metric F has some curvature property.

关键词： Finsler Space with (α β) -Metric Projective Change Locally Projectively Flat Randers Metric

Stability management of high speed axial flow compressor stage through axial extensions of bend skewed casing treatment

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Propulsion and Power Research 2016年第3期5卷 236-249页

作者： Dilipkumar Bhanudasji Alone S.Satish kumar Shobhavathy M.Thimmaiah Janaki Rami Reddy Mudipalli A.M.pradeep Srinivasan Ramamurthy Venkat S.Iyengara Propulsion Division CSIR-NALBangalore 560037India Aerospace Engineering Department IIT BombayPowai 400076India NCAD CSIR-NALBangalore 560017India

This paper presents the experimental results to understand the performance of moderately loaded high speed single stage transonic axial flow compressor subjected to various configurations of axial extensions of bend skewed casing treatment with moderate *** bend skewed casing treatment of 33%porosity was coupled with rectangular plenum chamber of depth equal to the slots *** five axial extensions of 20%,40%,60%,80%and 100%were used for the experimental evaluations of compressor *** main objective was to identify the optimum extension of the casing treatment with reference to rotor leading edge which results in maximum stall margin improvements with minimum loss in the stage *** each axial extension the compressor performance is *** improvement in the stall margin was very significant at some axial extensions with 4%–5%penalty in the stage *** compressors stage shows recovery in terms of efficiency at lower axial extensions of 20%and 40%with increase in the peak stage *** of flow parameters showed the typical behaviors at near stall flow *** wire sensor was placed at the rotor upstream in the tip region to capture the oscillations in the inlet axial and tangential velocities at stall *** the absence of casing treatment the compressor exhibit abrupt stall with very high oscillations in the inlet axial and tangential velocity of the *** extents of oscillations reduce with bend skewed casing *** measurements were also performed in the plenum chamber and salient results are presented in this paper.

关键词： High speed compressor Bend skewed casing treatments Axial extensions Stall margin improvements Peak stage efficiency Hot wire probe Stall Abrupt

Tillage and Rice-Wheat Cropping Sequence Influences on Some Soil Physical Properties and Wheat Yield under Water Deficit Conditions

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Open Journal of Soil Science 2012年第2期2卷 71-81页

作者： Sandeep kumar pradeep K. Sharma Stephen H. Anderson Kapil Saroch Carbon Management & Sequestration Center School of Environment & Natural Resources Ohio State University Columbus USA Department of Agronomy Forage and Grassland Management CSK HPKV Palampur India. Department of Soil Science CSK HPKV Palampur India Department of Soil Environmental and Atmospheric Sciences University of Missouri Columbia USA 4Department of Agronomy Forage and Grassland Management CSK HPKV Palampur India.

Adopting a better tillage system not only improves the soil health and crop productivity but also improves the environment. A field experiment was conducted to investigate the effects of tillage and irrigation management on wheat (Triticum aestivum L.) production in a post-rice (Oryza sativa L.) management system on silty clay loam soil (acidic Alfisol) for 2003-2006. Four irrigation levels (RF: rainfed;I1: irrigation at crown root initiation (CRI);I2: irrigation at CRI + flowering;I3: irrigation at CRI + tillering + flowering), and two tillage systems (ZT: zero tillage and CT: conventional tillage) were tested. Zero tillage compared to CT, resulted in higher bulk density (1.34 vs 1.23 Mg –3), lower total porosity (48.7 vs 52.9%), higher penetration resistance (1.51 vs 1.37 MPa), lower saturated hydraulic conductivity (1.60 vs 92.0 mm h–1), lower infiltration rate (9.40 vs 36.6 mm h–1) and higher volumetric available water capacity (7.9 vs 7.5%) in the surface 0.15 m soil layer. Irrigation levels significantly affected crop water use, wheat yield, and water use efficiency (WUE). Average total water use was 461, 491, 534 and 580 mm under RF, I1, I2 and I3 treatments, respectively. Grain and straw yield of wheat were statistically the same under ZT and CT during 2003-2004;the values, averaged over four irrigation levels were 2.10 and 2.38 Mg a–1 for grain, and 3.46 and 3.67 Mg a–1 for straw, respectively. Grain yield declined by 22%, 11% and 8% of I3 (2.32 Mg ha–1) with RF, I1 and I2 treatments, respectively, under ZT;and by 13%, 8% and 5% of I3 (2.61 Mg ha–1) with RF, I1 and I2 treatments under CT. Average values of WUE were 4.33 kg ha–1 m–1 and 2.35 m3–1 grain for the ZT and CT treatments. Wheat yield increased with increased irrigation levels for all the cropping seasons. Results from this study concluded that ZT system was better compared to the CT system even with lower yields due to lower input costs for this treatment.

关键词： Conventional Tillage Soil Physical Properties Infiltration Water Retention Water Use Efficiency Zero Tillage

Computation of Topological Indices of Dutch Windmill Graph

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Open Journal of Discrete Mathematics 2016年第2期6卷 74-81页

作者： M. R. Rajesh Kanna R. pradeep kumar R. Jagadeesh Post Graduate Department of Mathematics Maharani’s Science College for Women Mysore India Department of Mathematics The National Institute of Engineering Mysore India Research and Development Centre Bharathiar University Coimbatore India

In this paper, we compute Atom-bond connectivity index, Fourth atom-bond connectivity index, Sum connectivity index, Randic connectivity index, Geometric-arithmetic connectivity index and Fifth geometric-arithmetic co... 详细信息

关键词： ABC Index ABC4 Index Sum Connectivity Index Randic Connectivity Index GA Index GA5 Index

A Distribution and Ultrastructure of Laticifers in the Phylloclade of Euphorbia caducifoliaHaines, a Potential Hydrocarbon Yielding CAM Plant

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American Journal of Plant Sciences 2014年第1期5卷 70-79页

作者： Bugude Rajeswari Sake pradeep kumar Allu Prasada Rao Patan Shaik Sha Valli Khan Department of Biotechnology K.L University Green Fields Vaddeswaram Guntur India Department of Botany Yogi Vemana University Kadapa India Department of Microbiology Yogi Vemana University Kadapa India

The present study describes the anatomy, distribution, morphology and ultrastructure of laticifer system in the phylloclades of Euphorbia caducifolia Haines (Family Euphorbiaceae), a potential biofuel yielding, Crassulacean Acid Metabolism (CAM) plant for the first time using light and transmission electron microscopy (TEM). Histochemical tests were performed to identify the principal components of latex using a variety of stains. In cross section, the phylloclade is composed of four distinct regions: the epidermis, cortex, vascular cylinder and pith. The phylloclade anatomy indicated xeromorphic characters and provided an insight about its capacity to grow with very little rainfall and/or inputs on dry or marginal lands. Non-articulated laticifers are present in the cortex, vascular cylinder and pith, but their frequency varies with the tissue type. Highest laticifer frequency was observed in vascular cylinder (9.6%) followed by cortex (3.9%) and pith regions (1.9%). In contrast, laticifer index was found to be higher in the pith (12.7%) followed by cortex (3.8%) and vascular cylinder (2.3%). The discovery of a system of laticifers in E. caducifolia not described earlier could also be of taxonomic value. The histo-chemical tests revealed the presence of lipids, phenols, flavonoids, protein and starch in laticifer. As described by TEM observations laticifers contained distinct cell wall, nucleus and cytoplasm with ribosomes, small and big vacuoles, mitochondria, endoplasmic reticulum, plastids and osmophilic bodies. The lipophilic compounds present in the latex of this species could be used as chemical feedstock for the production of biofuels.

关键词： Biofuel Euphorbia Latex Laticifer Phylloclade Ultrastructure

Tight near-total corrosive strictures of the proximal esophagus with concomitant involvement of the hypopharynx: Flexible endoscopic management using a novel technique

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World Journal of Gastrointestinal Endoscopy 2018年第11期10卷 367-377页

作者： Harpal S Dhaliwal Nitin kumar pradeep kumar Siddappa Ripudaman Singh Jogeet Singh Sekhon Jaspal Masih Justin Abraham Sameer Garg Department of Gastroen-terology Christian Medical College and HospitalLudhiana 141012 Punjab India Department of Internal Medicine Christian Medical College and Hospital Department of Internal Medicine University of Connecticut Department of Radiodiagnosis and Imaging Fortis Hospital

AIM To investigate the role of a novel minimally invasive endoscopic technique in the management of tight neartotal corrosive strictures of the proximal esophagus involving the *** Two patients with near-total corrosive strictures of the proximal esophagus involving the hypopharynx were managed with the novel endoscopic technique. The technique involved passing a 0.025-inch flexible guidewire across the stricture, and stricture dilatation, using 10 F coaxial diathermy and balloon dilators, followed byelectro-incision of the proximal aspect of the residual eccentric stricture by means of a novel approach using a wire-guided *** Both patients were successfully managed on an outpatient department basis with the complete relief of symptoms and resolution of strictures on endoscopy and an esophagogram. No adverse events were seen during or after the procedure. There was no recurrence of symptoms at a follow-up of over a year in both cases. There was a significant improvement in the body mass index of both patients after the *** We report a novel flexible endoscopic technique for the management of complex hypopharyngo-esophageal strictures. In experienced hands, the procedure is relatively simple, safe and effective with a durable response.

关键词： Cricopharyngeal strictures Electroincision Corrosive injury Benign esophageal strictures Stricture dilatation

Schultz Polynomials and Their Topological Indices of Jahangir Graphs J_2,m

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Applied Mathematics 2016年第14期7卷 1632-1637页

作者： Shaohui Wang Mohammad Reza Farahani M. R. Rajesh Kanna R. pradeep kumar Department of Mathematics University of Mississippi Oxford USA Department of Mathematics and Computer Science Adelphi University Garden City USA Department of Applied Mathematics Iran University of Science and Technology (IUST) Narmak Tehran Iran Department of Mathematics Maharani's Science College for Women Mysore India Department of Mathematics The National Institute of Engineering Mysuru India

Let G = (V;E) be a simple connected graph. The Wiener index is the sum of distances between all pairs of vertices of a connected graph. The Schultz topological index is equal to and the Modified Schultz topological index is . In this paper, the Schultz, Modified Schultz polynomials and their topological indices of Jahangir graphs J2,m for all integer number m ≥ 3 are calculated.

关键词： Molecular Topological Index Schultz Index Schultz Polynomials Jahangir Graphs J2 m

Fracture Bilateral Talus in Children

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Surgical Science 2013年第9期4卷 405-409页

作者： Vinit Verma Amit Batra pradeep Kamboj Suresh Bhuriya Raj Singh Sumit kumar Rakesh Gupta Narender kumar Magu Pt. B. D. Sharma PGIMS Rohtak Rohtak India

Talar body injuries are rare, particularly in children. To our knowledge, there has not been a single case report of bilateral talus fracture in a child till date. We report two cases of fracture bilateral talus in children. The first case is of a fracture separation of the distal tibial epiphysis and a fracture of the body of the talus with subluxation of ankle on right side and a fracture neck of talus on left side. The second is fracture bilateral talus with epiphyseal injury of left distal tibia. A minimal or undisplaced fracture of talus is less likely to undergo avascular necrosis than a displaced fracture but even with optimal treatment, avascular necrosis may still occur. It is of prime significance that these fractures should be diagnosed well in time to avert complications. Therefore an appropriate length of follow-up is required.

关键词： Paediatric Talus Fracture Bilateral Avascular Necrosis