Occupational radiation exposure control analyses of 14 MeV neutron generator facility: A neutronic assessment for the biological and local shield design

Swami H.L.,Vala S.,Abhangi M.,Kumar Ratnesh,Danani C.,Kumar R.,Srinivasan R. 한국원자력학회 2020 Nuclear Engineering and Technology Vol.52 No.8

The 14 MeV neutron generator facility is being developed by the Institute for Plasma Research India to conduct the lab scale experiments related to Indian breeding blanket system for ITER and DEMO. It will also be utilized for material testing, shielding experiments and development of fusion diagnostics. Occupational radiation exposure control is necessary for the all kind of nuclear facilities to get the operational licensing from governing authorities and nuclear regulatory bodies. In the same way, the radiation exposure for the 14 MeV neutron generator facility at the occupational worker area and accessible zones for general workers should be under the permissible limit of AERB India. The generator is designed for the yield of 1012 n/s. The shielding assessment has been made to estimate the radiation dose during the operational time of the neutron generator. The facility has many utilities and constraints like ventilation ducts, accessible doors, accessibility of neutron generator components and to conduct the experiments which make the shielding assessment challenging to provide proper safety for occupational workers and the general public. The neutron and gamma dose rates have been estimated using the MCNP radiation transport code and ENDF eVII nuclear data libraries. The ICRP-74 fluence to dose conversion coefficients has been used for the assessment. The annual radiation exposure has been assessed by considering 500 h per year operational time. The provision of local shield near to neutron generator has been also evaluated to reduce the annual radiation doses. The comprehensive results of radiation shielding capability of neutron generator building and local shield design have been presented in the paper along with detailed maps of radiation field

Rare case of median nerve and brachial artery entrapment by an abnormal musculo-fascial tunnel in the arm: possible cause of neurovascular compression syndrome

Naveen Kumar,Ashwini Aithal Padur,Gayathri Prabhu,Swamy Ravindra Shanthakumar,Ravi Bhaskar 대한해부학회 2019 Anatomy & Cell Biology Vol.52 No.1

Entrapment neuropathies of the peripheral nervous system are frequently encountered due to anatomical variations. Median nerve is the most vulnerable nerve to undergo entrapment neuropathies. The clinical complications are mostly manifested by median nerve impingement in forearm and wrist areas. Median nerve entrapment could also occur at the arm, due to the presence of ligament of Struthers. Here we report a rare case of proximal entrapment of median nerve and brachial artery in the arm by an abnormally formed musculo-fascial tunnel. The tunnel was formed by the muscle fibers of brachialis and medial intermuscular septum in the lower part of arm. Due to this, the median nerve coursed deep, below the tunnel and continued distally into the forearm, underneath the pronator teres muscle and hence did not appear as a content of cubital fossa. The present entrapment of neurovascular structures in the tunnel might lead to pronator syndromes or other neurovascular compression syndromes.

Intelligent fault diagnosis of rolling bearing and gear system under fluctuating load conditions using image processing technique

Rakesh Kumar Jha,Preety D Swami 대한기계학회 2020 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.34 No.10

Health monitoring of a rotating machine is mainly done by investigation of the vibration patterns generated by the machine. Leveraging the fact that faults occurring in different parts of a machine generate unique fault signatures, a fault diagnosis methodology is proposed that can identify nine different healthy and faulty categories under varying load and noisy conditions. Neural network is employed for classification of faults in various categories. The robustness of features such as semivariance, kurtosis and Shannon entropy make them strong candidates to train the artificial neural network. The matching of vibration textural patterns with wave atom basis functions ensures removal of noise. As a result, the enhanced features used to train the neural network have led to high accuracy in classification. The algorithm is tested at various load conditions for both bearing and gear fault experimental data sets acquired by machinery fault simulator in laboratory. Simulation results show high degree of accuracy for both bearing and gear fault diagnosis under no load to heavy load noisy conditions.

Physicochemical and Microbiological Characteristics of High-Pressure-Processed Ready-to-Eat Hilsa (Tenualosa ilisha) Curry

Kajal Kumar Roy Singha,Nishant R Swami Hulle,Saptashish Deb,P. Srinivasa Rao 한국농업기계학회 2020 바이오시스템공학 Vol.45 No.2

Purpose Hilsa (Tenualosa ilisha) is a commercially significant fish, which is popular as seafood. Although it has a high market value, salted hilsa is usually spoiled by various microorganisms and their metabolic activities that lead to the deterioration of fish quality. Therefore, it is necessary to control the physicochemical and microbiological characteristics of high-quality hilsa products by standardizing the process parameters during their production. Methods Hilsa filets were heat-treated at 75 °C for 5 min and compared with high-pressure-processed samples at different temperatures (40, 50, and 60 °C), pressures (300, 400, and 500 MPa), and hold duration (5, 10, and 15 min). Results The physical, chemical, and microbiological analyses of high-pressure-processed (500 MPa/5 min/50 °C) hilsa fish curry in retort pouch were found to be the most suitable treatment to retain the physicochemical parameters and reduce the microbial load. Moreover, the high-pressure-processed product also received higher sensory scores for texture and color (8.3 and 7.3 out of 10, respectively) compared with the heat-processed curry. Conclusions All the high-pressure treatments showed retention of quality attributes in terms of physical, chemical, and microbiological characteristics of ready-to-eat hilsa curry. This study presents an effective high-pressure processing approach to produce the best quality ready-to-eat hilsa product.

The Effect of Plant Growth Regulators and Natural Supplements on in vitro Propagation of Pogostemon cablin Benth

Mallappa Kumara Swamy,Sudipta Kumar Mohanty,Maniyam Anuradha 한국작물학회 2014 Journal of crop science and biotechnology Vol.17 No.2

The effect of plant growth regulators and natural supplements on the morphogenetic response of Pogostemon cablin Benth. wasinvestigated. Murashige and Skoog (MS) media supplemented with 0.5 mg L-1 benzyl-6-adenine and 0.5 mg L-1 kinetin was effectivein inducing multiple shoots (63.20 ± 0.15) with an average shoot length of 5.27 ± 0.15 cm and biomass of 5.20 ± 0.10 g shoot-1. Among the natural supplements, 10% coconut water supplemented to MS media showed a better response in all the morphologicalparameters studied. The use of 10% tomato extract, 20% banana extract, 10% carrot extract, and 10% papaya extract in MS mediumhave efficiently increased multiple shoots, shoot length, and fresh weight of the shoots. The natural supplements also effectivelyincreased the chlorophyll content, total protein, and total carbohydrate content in the plant. The frequency of rooting (93%) was highestwhen shoots were implanted on strength MS media with 100 mg L-1 activated charcoal. The in vitro rooted plants were successfullyacclimatized and established in soil. Also, RAPD analysis showed no variation suggesting true-to-type nature of the micropropagatedplants. Hence, this protocol can effectively reduce the cost of in vitro multiplication of plants.

Deuterium ion irradiation impact on the current-carrying capacity of DI-BSCCO superconducting tape

Rajput M.,Swami H.L.,Kumar R.,Bano A.,Vala S.,Abhangi M.,Prasad Upendra,Kumar Rajesh,Srinivasan R. 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.7

In the present work, we have irradiated the DI-BSCCO superconducting tapes with the 100 keV deuterium ions to investigate the effect of ion irradiation on their critical current (Ic). The damage simulations are carried out using the binary collision approximation method to get the spatial distribution and depth profile of the damage events in the high temperature superconducting (HTS) tape. The point defects are formed near the surface of the HTS tape. These point defects change the vortex profile in the superconducting tape. Due to the long-range interaction of vortices with each other, the Ic of the tape degrades at the 77 K and self magnetic field. The radiation dose of 2.90 MGy degrades the 44% critical current of the tape. The results of the displacement per atom (dpa) and dose deposited by the deuterium ions are used to fit an empirical relation for predicting the degradation of the Ic of the tape. We include the dpa, dose and columnar defect terms produced by the incident particles in the empirical relation. The fitted empirical relation predicts that light ion irradiation degrades the Ic in the DI-BSCCO tape at the self field. This empirical relation can also be used in neutron irradiation to predict the lifetime of the DI-BSCCO tape. The change in the Ic of the DI-BSCCO tape due to deuterium irradiation is compared with the other second-generation HTS tape irradiated with energetic radiation

Adventitious Shoot Regeneration from Immature Zygotic Embryos of Indian Kino Tree (Pterocarpus marsupium Roxb.) and Genetic Integrity Analysis of in Vitro Derived Plants Using ISSR Markers

Radhika Tippani,Anil Kumar Vemunoori,Rajesh Yarra,Rama Swamy Nanna,Sadanandam Abbagani,Christopher Thammidala 한국원예학회 2013 Horticulture, Environment, and Biotechnology Vol.54 No.6

A simple and highly efficient protocol has been developed for in vitro regeneration of Pterocarpus marsupium using immature zygotic embryo (IZE) as explant. The highest frequency of shoot regeneration (93.8%) was obtained on Murashige and Skoog (MS) medium supplemented with 3.0 mg·L-1 6-benzylaminopurine (BA) and 0.5 mg·L-1 indole-3-acetic acid (IAA), wherein maximum of 17.3 ± 0.9 shoots per explant was induced. When these cultures were sub-cultured on MS medium supplemented with 1.0 mg·L-1 BA, more shoots (27.2 ± 1.1) with an average shoot length of 4.5 cm were observed. The highest rooting (70.8%) and maximum number of roots (3.2 ± 0.3) per shoot were obtained when shoots were dipped in 3.0 mg·L-1 indol-3-butyric acid (IBA) solution for 24 hours and further cultured on half-strength MS medium. Plantlets obtained in vitro were transferred to the field after being hardened with a 74%survival rate. Analysis of regenerated plantlets using inter-simple sequence repeat (ISSR) markers confirmed that there was no genetic variability. All ISSR banding profiles from regenerated plantlets were monomorphic and similar to those of the mother plant. This protocol might be helpful for the mass multiplication and in vitro conservation of P. marsupium.

Absence of retromandibular vein associated with atypical formation of external jugular vein in the parotid region

Jyothsna Patil,Naveen Kumar,Ravindra S Swamy,Melanie R D'Souza,Anitha Guru,Satheesha B Nayak 대한해부학회 2014 Anatomy & Cell Biology Vol.47 No.2

Veins of the head and neck exhibiting anatomical variations or malformations are clinically significant. Anatomical variation in the external jugular vein is very common. However, anatomical variation in the retromandibular vein is rare. In this paper, we report a rare case of complete absence of the retromandibular vein. In the absence of the retromandibular vein, the maxillary vein divided into anterior and posterior divisions. The posterior division joined the superficial temporal vein to form an atypical external jugular vein, and the anterior division joined the facial vein to form an anonymous vein. In clinical practice, radiologists and surgeons use the retromandibular vein as a guide to expose the branches of the facial nerve during superficial parotidectomy. Therefore, absence of the retromandibular vein is a hurdle during this procedure and may affect the venous drainage pattern from the head and neck.

A study of PO-$\Gamma$-semigroups in terms of anti fuzzy ideals

T. Nagaiah,K. Vijay Kumar,P. Narasimha Swamy,T. Srinivas 원광대학교 기초자연과학연구소 2017 ANNALS OF FUZZY MATHEMATICS AND INFORMATICS Vol.14 No.3

The notions of anti fuzzy ideals, bi-ideals and interior ideals of Partially Ordered $\Gamma$-Semigroups(PO$\Gamma$S) have been proposed in this paper. We characterize some properties of PO$\Gamma$S in terms of anti fuzzy ideals (AFI). We obtain equivalent statements on composition of AFI using the characteristic function and anti fuzzy bi-ideal(AFBI). Also we study the relationship between anti fuzzy product and union of AFI in a PO$\Gamma$S. Finally, we deliberate the necessary and sufficient condition of PO-$\Gamma$-semigroups.

Behavior of Certain Wavelets in Classification of Orthopaedic Images of Different Modalities

M. V. Latte,Kumar Swamy.V,B.S.Anami 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.12

Orthopedicians often identify imaging modality visually out of their experience. To be effective, the process needs to be automated. This paper presents a behavior of wavelets in classification of orthopedic imaging modalities using Artificial Neural Network (ANN). In this work, we have considered orthopedic imaging modalities, namely, X-ray, CT and MRI and Bone scan images. Four wavelets, namely Haar, Daubechies, Symlets and Coiflets are used for sub band decomposition and their approximation co-efficients are recorded. Features, namely, mean standard deviation, median, variance and entropy is drawn from the decomposed images. Results are drawn from the performance of these wavelets at five levels of decomposition. Feature reduction is based on the classification accuracies which are analysed using wavelets. The experimental results show that the proposed method achieves satisfactory results with an average accuracy of 98% for four wavelets and for all the modalities considered. The study can be extended to include other modalities in medical field. The work is useful for orthopaedics practitioners.