Study of dynamical charge fluctuations in the hadronic medium

The dynamical charge fluctuations have been studied in ultra-relativistic heavy-ion collisions by using hadronic model simulations, such as UrQMD and HIJING. The evolution of fluctuations has been calculated at different time steps during the collision as well as different observation window in pseudorapidity (\DelEta). The final state effects on the fluctuations have been investigated by varying $\bigtriangleup\eta$~ and the time steps with the aim of obtaining an optimum observation window for capturing maximum fluctuations. It is found that $\bigtriangleup\eta$~ between 2.0 and 3.5 gives the best coverage for the fluctuations studies. The results of these model calculations for Au+Au collisions at $\sqrt{s_{\rm NN}}$~=~7.7 to 200~GeV and for Pb+Pb collisions at 2.76 TeV are presented and compared with available experimental data from the Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC).Comment: 6 pages, 4 Figure

Role of imaging in evaluation and management of juvenile idiopathic arthritis: a prospective cohort study

Background: This study was aimed to evaluate the role of imaging in diagnosis and management of juvenile idiopathic arthritis by comparing the evaluation findings of clinical and ultrasound of all 14 joints in arthritis affected patients under 16 years of age.Methods: Prospectively study was done on patients in age group of 0-16years, who referred to radiology department based on clinical assessment. USG is done in both shoulder, elbow, wrist, hip, knee, ankle and subtalar joints of each patient to assess the following parameters Synovial hypertrophy, joint effusion, power doppler signal, tenosynovitis, enthesitis, cartilage thinning, bone erosions and bursitis.Results: Out of 980 joints assessed 344 joints (35.1% of all joints) had clinical synovitis, while USG evidence was in 382 joints (38.9% of all joints). Among the 344 clinically positive joints (35.1% of all joints), 223 joints (64.8%) had features of synovitis in USG and the rest 121 (35.2%) joints were clinically positive turned out to be ultrasound negative. Out of 980 joints 636 joints (64.8%) were clinically negative, of these 159 joints (25%) was found to have synovitis in ultrasound and 477 joints (75%) turned out to be negative on ultrasound examination.Conclusions: The sensitivity and specificity of ultrasound over clinical examination in shoulder joint was 47.6% and 89.1% respectively, in elbow joint 53.8% and 92.1%, in wrist joint 64.3% and 72.6%, in hip joint 65.1% and 64.9%, in knee joint 74.7% and 61.2%, in ankle joint 67.2% and 59.2% and in subtalar joint 56.7% and 71.8%, respectively

Effect of oxygen on the polymerization of acrylamide

Oxygen commonly plays a vital role during the degradation and polymerization of vinyl compounds. While many studies have been done in the former case, there are only a few reports on its role in the latter case. Under suitable conditions, oxygen interacts with polymers to form hydroperoxides and poyperoxides

Range data processing: representation of surfaces by edges

Journal ArticleRepresentation of surfaces by edges is an important and integral part of a robust 3-D model based recognition scheme. Edges in a range image describe the intrinsic characteristics about the shape of the objects. In this paper we present three approaches for detecting edges in 3-D range data. The approaches are based on computing the gradient, thresholding, thinning and fitting straight lines or curves; fitting 3-D lines to a set of points, and detecting changes in the direction of unit normal vectors on the surface. These approaches are applied locally in a small neighborhood of a point. The neighbors of a 3-D point are found by using the k-d tree algorithm. As compared to previous work on range processing, the approaches presented here are applicable not only to sensor range data corresponding to any one view of the scene, but also to 3-D model data obtained using the Computer-Aided Geometric Design (CAGD) techniques, and to 3-D model built using the sensor data such as the data obtained by combining several views of an object. We present several examples where the data is synthetically genetrated, obtained from CAGD methods or obtained from a laser scanner. A comparison of the techniques is presnted

Neutropenia and Neutropenic Complications in ABVD Chemotherapy for Hodgkin Lymphoma

A combination of Adriamycin (a.k.a. Doxorubicin), Bleomycin, Vinblastine, and Dacarbazine (ABVD) is the most commonly used chemotherapy regime for Hodgkin lymphoma. This highly effective treatment is associated with a significant risk of neutropenia. Various strategies are adopted to counter this commonly encountered problem, including dose modification, use of colony stimulating factors, and prophylactic or therapeutic use of antibiotics. Data to support these approaches is somewhat controversial, and in keeping with the paucity of definitive evidence, there is a wide disparity in the management of neutropenia in patients receiving ABVD chemotherapy. This paper summarizes the evidence for managing ABVD-related neutropenia during the treatment of Hodgkin lymphoma

FATTY ACID COMPOSITION OF THE FRUITS OF SYZYGIUM ZEYLANICUM (L.) DC. VAR. ZEYLANICUM

Objective: Wild indigenous fruits are believed to be extremely nutritious, contributing a great deal to the general health of the tribal and rural population. To validate this claim, systematic studies are required to estimate their nutritional composition. The objective of the study was to analyze the fatty acid composition of Syzygium zeylanicum (L.) DC. var. zeylanicum.Methods: The fatty acid composition of S. zeylanicum var. zeylanicum fruits were analysed by GC-MS/MS.Results: The major fatty acids were cis-oleic acid (43.47±0.62 %) and linoleic acid (31.14±0.35%). Total monounsaturated fatty acids in the sample was 44.21%. Omega-6, omega-7 and omega-9 fatty acids were detected. The polyunsaturated fatty acids in thefruits were linoleic acid (31.14±0.35 %) and arachidonic acid (0.15±0.22 %), whereas 24.51 % of the total fatty acids were saturated. The ratio of unsaturated to saturated fatty acids was approximately 3:1. The order of abundance of fatty acids, in some of the healthiest oils, viz. olive, canola, peanut oils is, Oleic acid>Linoleic acid>Palmitic acid>Stearic acid and the same order was observed in the present study.Conclusion: Fruits of S. zeylanicum var. zeylanicum too shows a healthy balance between unsaturated and saturated fats.Â

Time-Optimal Control Studies for Additional Food provided Prey-Predator Systems involving Holling Type-III and Holling Type-IV Functional Responses

In recent years, time-optimal control studies on additional food provided prey-predator systems have gained significant attention from researchers in the field of mathematical biology. In this study, we initially consider an additional food provided prey-predator model exhibiting Holling type-III functional response and the intra-specific competition among predators. We prove the existence and uniqueness of global positive solutions for the proposed model. We do the time optimal control studies with respect quality and quantity of additional food as control variables by transforming the independent variable in the control system. Making use of the Pontraygin maximum principle, we characterize the optimal quality of additional food and optimal quantity of additional food. We show that the findings of these time-optimal control studies on additional food provided prey-predator systems involving Holling type III functional response have the potential to be applied to a variety of problems in pest management. In the later half of this study, we consider an additional food provided prey-predator model exhibiting Holling type-IV functional response and study the above aspects for this system

Stochastic Time-Optimal Control Studies for Additional Food provided Prey-Predator Systems involving Holling Type-IV Functional Response

We consider an additional food provided prey-predator model exhibiting Holling type IV functional response with combined continuous white noise and discontinuous L\'evy noise. We prove the existence and uniqueness of global positive solutions for the considered model. By considering the quality and quantity of additional food as control parameters, we formulate a time-optimal control problem. We obtain the condition for the existence of an optimal control. Furthermore, making use of the arrow condition of the sufficient stochastic maximum principle, we characterize the optimal quality of additional food and optimal quantity of additional food. Numerical results are given to illustrate the theoretical findings with applications in biological conservation and pest management

Stochastic Optimal and Time-Optimal Control Studies for Additional Food provided prey-predator Systems involving Holling Type-III Functional Response

This paper consists of a detailed and novel stochastic optimal control analysis of a coupled non-linear dynamical system. The state equations are modeled as additional food provided prey-predator system with Holling Type-III functional response for predator and intra-specific competition among predators. We firstly discuss the optimal control problem as a Lagrangian problem with a linear quadratic control. Secondly we consider an optimal control problem in the time-optimal control setting. Stochastic maximum principle is used for establishing the existence of optimal controls for both these problems. Numerical simulations are performed based on stochastic forward-backward sweep methods for realizing the theoretical findings. The results obtained in these optimal control problems are discussed in the context of biological conservation and pest management