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Rajneesh Kumar , Kulwant Rai Sharma , Lalit Mohan Gupta

Abstract

The present studies were conducted on variation in physico-chemical characteristics of wood of candidate plus trees (CPTs) of Sissoo (Dalbergia sissoo). Among different CPTs of Dalbergia sissoo, significant differences were noticed for all the characters except for holocellulose contents. The maximum height and diameter were recorded in Khajjian-1 whereas, the minimum height was observed in Dhaulakuan-l and diameter in Dhartatoh-3. The maximum bark percentage was noticed in Dhartatoh-l and minimum in Raja ka Bagh-1. The maximum sapwood percentage and minimum heartwood percentage was found in Dhaulakuan-l, while the maximum heartwood percentage was noticed in Khajjian-1. Physico-chemical properties of sapwood viz., specific gravity, fibre length, cold water solubility, hot water solubility, alcohol-benzene solubility, lignin content and holocellulose content ranged between 0.5138 - 0.6306,0.93-1.22 mm, 2.25 % (1.50) - 6.75 % (2.60), 3.50 % (1.87) - 9.15 % (3.02), 1.01 % (1.00) - 7.56 % (2.75), 23.90 -30.50 % and 66.00 - 76.55 %, respectively. Physico-chemical properties of heartwood of Dalbergia sissoo CPTs viz., specific gravity, cold water solubility, hot water solubility, alcohol-benzene solubility, lignin content and holocellulose content ranged between 0.5275 - 0.6905, 5.25 % (2.29) - 10.15 % (3.19), 9.15 % (3.02) - 11.55 % (3.40), 6.82 % (2.61) - 10.82 % (3.29),30.50.39.70 % and 62.00 - 70.00 %, respectively.

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Rajneesh Kumar ¹, Vandana Gupta ²

Affiliations
1 Department of Mathematics, Kurukshetra University Kurukshetra-136119, Haryana, IN
2 Indira Gandhi National College, Ladwa (Dhanora), Haryana, IN

Abstract

The aim of the present paper is to study the Green's function for two-phase transversely isotropic thermoelastic diffusion media. Based on the governing equations of transversely isotropic thermoelastic diffusion media, general solution for the 2D static problem is presented for the case of distinct eigen values. The Green's function for the considered problem under point force, thermal source and mass concentration source is presented in terms of elementary functions with undetermined constants which can be obtained by employing suitable boundary and equilibrium conditions. The components of displacement, stress, temperature distribution and mass concentration are computed numerically. The computed numerical results are depicted graphically for a particular model.

Keywords

Thermoelastic, Diffusion, Green’s Function, Transversely, Isotropic, Two-Phase.

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Rajneesh Kumar ¹, Arvind Kumar ²

Affiliations
1 Department of Mathematics, Kurukshetra University, Kurukshetra, Haryana 136119, IN
2 Department of Mathematics, Punjab Technical University, Jalandhar, Punjab 144603, IN

Abstract

The present investigation deals with the deformation in micropolar thermoelastic diffusion medium due to inclined load subjected to thermal laser pulse. Normal mode analysis technique is used to solve the problem. The inclined load is assumed to be a linear combination of a normal load and a tangential load. The closed form expressions of normal stress, tangential stress, couple stress, temperature distribution, and mass concentration are obtained. A computer program has been developed to derive the physical quantities numerically. The variation of normal stress, tangential stress, coupled stress, temperature change, and mass concentration is depicted graphically to show the effect of relaxation times and mass concentration. Some particular cases of interest are deduced from the present investigation.

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Rajneesh Kumar ¹, Nisha Garg ², Poonam Bogra ³, Vineeta Nikhil ⁴, Amit Garg ⁵, Anamika Thakur ¹

Affiliations
1 Dept. of Conservative Dentistry and Endodontics, Sri Sukhmani Dental College and Hospital, Punjab, IN
2 Dept. of Conservative Dentistry and Endodontics, Bhojia Dental College and Hospital, Himachal Pradesh, IN
3 Dept. of Conservative Dentistry and Endodontics, D.A.V. Dental College and Hospital, Haryana, IN
4 Dept. of Conservative Dentistry and Endodontics, Subharti Dental College, Uttar Pradesh, IN
5 Dept. of Oral and Maxillofacial Surgery, Sri Sukhmani Dental College and Hospital, Punjab, IN

Abstract

Objective: To evaluate the effect of various post materials and cements on fracture resistance of endodontically treated teeth. Material and Methods: Three post systems; custom made Ni-Cr post and core, prefabricated stainless steel and carbon fibre post with composite core and two different luting cements i.e glass ionomer and resin cements were used. Results and Conclusions: Carbon fibre post cemented with resin cements showed higher failure load than Ni-Cr and stainless steel post and resin cement performed better than glass ionomer cement, the mode of fracture was more favourable with carbon fibre post than in metallic post.

Keywords

Custom Made Ni-Cr Post, Glass Ionomer Cement, Prefabricated Carbon Fibre Post, Prefabricated Stainless Steel Post, Resin Cement.

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Ashish Kumar ¹, Santosh Kumar ¹, Rajneesh Kumar ¹

Affiliations
1 National Metallurgical Laboratory, Jamshedpur, IN

Abstract

Heat Affected Zone (HAZ) simulation by Gleeble is a useful method for evaluating welding process parameters to improve the toughness of weld HAZ by optimizing process parameters. The HAZ Toughness in low alloy steels is strongly influenced by the welding parameters (as HAZ microstructure is influenced by the heat input and cooling rate). In the present work different regions of weld HAZ of API 5L X52 steel have been simulated by using Gleeble @ 3800 Thermal- Mechanical Simulator. Two cooling rates (t_8/5) 10 s to simulate low heat input (LHI) welding conditions without preheating, (t_8/5) 40s to simulate high heat input (HHI) welding were used. Charpy V-notch impact tests were conducted on the simulated as well as on the base material at room temperature (25° C) and at -40° C. Results showed that HHI simulated coarse grain HAZ (CGHAZ) region attributed highest Impact energy of 300 J in comparison to 199 J of base material at 25° C. In HAZ regions, lowest room temperature toughness was observed in sub critical HAZ (SCHAZ) for both HHI and LHI conditions. Lowest impact energy at -40° C was observed in fine grained HAZ (FGHAZ) for both HHI and LHI conditions. Hardness test showed that LHI samples exhibited slightly higher hardness than HHI condition and the hardness profile for HAZ regions was similar for both HHI and LHI conditions.

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Dasari Sudheer Kumar ¹, Pallavi Rai ¹, Rajneesh Kumar ¹, Somnath Karmakar ¹, Showmen Saha ¹

Affiliations
1 Department of Civil Engineering, NIT Durgapur - 713209, West Bengal, IN

Abstract

Objectives: To assess the behaviour of reinforced concrete building frames under different types of blast loads. Methods: The method adopted for the analysis was ConWep blast load method. This is a computational method and is based on collection of conventional weapon effects calculations developed by U.S Dept. of Army 1998. The finite element modelling of the building was carried out by using the standard hydrocode software LS_DYNA_971 R 7.1. The charge weight was considered as 226.8 kg of TNT explosive. Findings: Building structures are constructed throughout the world in accordance with building codes. The available codes lack substantial design considerations to prevent or minimize the impact caused by any sort of blast. The attacks by terrorists mainly focus on the iconic buildings like school buildings, government offices and hospitals etc. which affects the safety of the structure and causes loss of lives. So before the design it is required to know the behaviour of the entire building and its critical elements to design to resists the blast loads. In this study, the material models used for the representation of concrete and steel are CSCM_CONCRETE and PIECEWISE_LINEAR_ PLASTICITY respectively. The details of the modelling of building and its progressive collapse, material properties are also discussed. Improvements: The codes which are available for blast design are not provided the different types of failure conditions, for this reason this study was conducted and the failure conditions are observed.

Keywords

Blast Loading, Duration, Explosive Effects, Finite Element Method, Progressive Collapse, Reinforced Concrete Buildings

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Rajneesh Kumar ¹, Umesh Chandra Jaiswal ¹

Affiliations
1 M.M.M Engineering College, Gorakhpur, IN

Abstract

The presence of computer networks has prompted new problems with security and privacy. Having a secure and reliable means for communicating with images and video is becoming a necessity and its related issues must be carefully considered[1]. Hence, network security and data encryption have become important. The images can be considered nowadays, one of the most usable forms of information. Image and video encryption have applications in various fields including Internet communication, multimedia systems, medical imaging, telemedicine and military communication. So image encryption plays a very crucial role in network security. Image encryption is classified in two categories Private key cryptography and Public key cryptography. This paper focus image encryption using public key of 128* 128 block[10]. In the case of public key image encryption sender and receiver use different key for encrypting and decrypting.

Keywords

Image, Encryption, Decryption, Public Key, Private Key.

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Rajneesh Kumar ¹, Shalini Saxena ¹

Affiliations
1 Political Science, Amity Institute of Social Sciences, Amity University Noida, U.P., IN

Abstract

The New Economic Order emerged post 1973 Oil Crisis concurrently associated with creation of OPEC in the form of a detailed economic plan suggested by some of the developing countries through the UNCTAD. But this new order died within few years of its inception mainly because of the camaraderie among the developing nations vanishing due to conflicting economic interests. Notwithstanding above, the authors feel that NIEO of yesteryears still exists and greatly effects the world citizenry and the Indian socio-politico-economic system through increased focus on trans-border trade cooperation‟s, development of renewable energy sources, protection of consumer rights, globalization-liberalisationprivatization, self-reliance, Make in India, FDI, Skill India and Start Up India besides rapid industrialisation, spread of banking, internet and e-commerce and increased transparency of governmental functioning with an unprecedented accessibility of members of the Indian government on social media.

Keywords

Trans-Border Trade Cooperation, Steep Global Down Swing, Big-Five, Rhetorical and Political Value, Expansionist Ambitions, Global Multilateral Negotiations, Entrenched Liberalism.

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Rajneesh Kumar ¹, Mohit Rastogi ², Chandra Shekhar Singh ³, Rakesh Ranjan ⁴, Tanmoy Pramanik ⁵, Bhuvnesh Kumar Gupta ⁵

Affiliations
1 GM (Geomatics), Central Mine Planning and Design Institute Limited (CMPDI), Ranchi., IN
2 GM (Civil), Geomatics Division, CMPDI, Ranchi., IN
3 Chief Manager (Mining), CIL, Kolkata ., IN
4 Chief Manager (Geomatics), CMPDI, Ranchi, IN
5 Deputy Manager (Geomatics), CMPDI, Ranchi., IN

Abstract

An effort has been made to deliver a complete assessment of the present advancement of the drone technology adopted by Coal India Limited (CIL) through CMPDI and its application in the coal mining industry. Nowadays, drone operations are gaining more and more attentions to ease out routine jobs in the mining industry and unveiling new arenas of opportunity. To name a few, 3D mapping of the mine environment by generating ortho-photo mosaic, blasting monitoring as well as postblast rock fragmentation measurements, inventory monitoring, survey of colonies and residential areas, monitoring of vegetation, settlement etc. been the new areas of interest. This paper offers an assessment of types of drone, their specifications, and specific applications of drones along with various sensors for mining applications. Possibilities of implementation of drone technology in underground mining conditions are also discussed.

Keywords

Advancement, of drone technology, Applications & operations, monitoring, VTOL, UAV ortho-mosaic

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