Archives-December 

Acoustic waves have a massive potential in the realm of crack detection. Since cracks remain undetected for a long time, which may result in component damage, all sorts of methodologies which help in crack detection are considered to avoid deterioration and failure. Acoustic Emission (AE) is a critical indicator of crack initiation and propagation. Due to this, crack localization is done effectively using AE in different applications. The methodologies incorporating the acoustic waves' ability to detect and probe the crack existence is found to be practically viable and feasible. The paper makes an effort to analyze the different methodologies incorporating the AE towards the crack detection and propagation from all practical perspectives.

This study aims to contribute to the knowledge of Rodents and insectivora population of the Yangambi Biosphere Reserve (YBR). Some aspects have been treated and are related to diversity, reproduction, structure of Rodents and insectivorous populations aforesaid Reserve. Sampling collection place from 22nd to 25th September 2019 using trapping technic trapping in parallel and horizontal lines using Sherman and small Victor traps. For a total of 489 harm-trap, 43 specimens were captured, with a success of captures of 8,79% testifying an abundance of the Rodents and the Insectivora of the YBR. The 35 captured Rodents belong to 5 genera and 5 species (Hybomys lunaris, Hylomyscus stella, Lophuromys luteogaster, Praomys. cf. jacksoni and Stochomys longicaudatus) and 8 Insectivora are regrouped in Crocidura sp. On the whole, the ecological indices of Shannon-Wiener, Simpson and Equitability show that the biodiversity of small mammals is high. The analysis shows that the reproduction of males and females is higher, during the period of study. The average of litters varies according to species (1 to 2 embryos). Finely, some stability was observed in the structure of Rodent and Insectivora’s populations where the sex-ratio was in balance, because the difference was non significantly among males and females individuals and we had observed some stability in population’s structure by the presence of 3 classes who are: the adults (26 individuals), the subadults (2 individuals) and the young (8).

The bioecological study of Harithalodes derogata in northern Kerala is scanty. The larval instars of Harithalodes derogata feeds on many crops in northern Kerala, especially in okra. It also causes severe damage in Hibiscus sp. The study was conducted in the monsoon and post monsoon seasons of 2019 to 2020. Leaf roll was up to 80- 85 % in okra and 35-40 % in hibiscus and the defoliation was observed 70-75 % in okra and 30-35 % in hibiscus under heavy infestation. The field population of larvae was highest in August and December, while it was lowest in June and July.

The advancements in surgical nephrology in the management of numerous renal pathologies in the form of vascular reconstruction, renal transplants, nephron sparing surgeries, etc and the indispensable use of non invasive MDCT technology in detecting the variations in renal arteries anatomy has validated the study. Assessment of the anatomical variants of bilateral renal arteries in Indian population cohort on MDCT angiography and its clinical implications. 110 subjects were included in the study. The subjects were in the age group of 20 to 50 years. There were 60 (55%) male and 50(45%) female subjects. Normal and variant anatomy of renal arteries was studied using a 40 slice multidetector CT scanner. 76(69%) patients had single renal artery on right side, two renal arteries in 32(29%) patients and three renal arteries in 2(1.8%) patients. On the left side 87(79%) patients have single renal artery, 19(17%) patients have two renal arteries and 4(3.6%) patients have three renal arteries. No correlation with respect to the sex of the subjects was found. Knowledge of the renal artery anatomy is crucial in attaining the precision in renal related surgeries and MDCT renal angiography is the ideal modality of choice as it is not only accurate but also provides a detailed anatomical road map of the vascular anatomy.

There is a terrible crisis faced by public insecurity at "Laja Bajío" region at the State of Guanajuato, Mexico; leading to shutdowns and investment cancellation. Given this scenario, businessmen are in need to hire security service companies to provide them surveillance at their installations. Receiving businessmen whom are not considered to be satisfied with contractors, have been seen short in training to be operative personnel -caretaker, guardian, etc.- and this is not compatible with standardized organizational quality standards, also this create a bad image to corporate visitors, moreover projecting further distrust. A study with business users of private services in this area has been carried out, to know the characteristics of a good supplier. It has contrasted with the study to lenders to propose a business model that allows the establishment of a security execution and surveillance service company that meets the requirements and needs of receivers. It is an alternate business and investment. It is an alternate business and investment

Improperly designed cause undesirable effects below unstable loading in each bolstered concrete(RC) frames and masonry load wall structures. Doors and windows (openings) are inescapable parts in brick masonry in-filled RC structures and masonry load wall structures owing to its practical and ventilation necessities.The presence of openings in brick masonry walls reduces the lateral stiffness and strength of the enclose each RC and cargo bearing structures, that changes the particular behavior of structure.If these openings ar settled within the restricted zones like areas inside middle 2 thirds of a wall, then the wall has to be strong by providing necessary horizontal (bands) structural components like header or header bands around them. Lack of such structural components could cause the structure to endure severe injury throughout the earthquake event.In this paper, two case studies, (a) seismic analysis of RC framed building without provision of bands (b) seismic analysis of RC framed building with provision of bands at different level

Pressure relief valves uncertainty and parameter variations are of major significance in the hydraulic system operations. The use of one such valve, a compound pressure relief valve is the subject of this paper. From the deduced differential equations, MATLAB/SIMULINK simulation model developed. The pressure response of a valve with damping spool pilot poppet has been investigated and compared with the experimental results. Also simulated the effects of some critical parameters on the valve dynamic performance.

Most of the organizations are running their applications in cloud due to reliability, scalability, high performance, low band width and trust on cloud service provider(CSP). The cloud service providers provide the services to the registered cloud users on payment basic across the glove. The cloud services are basically categorized as SaaS, PaaS, and IaaS . The services are available to the users depending on cloud deployment and the SLA(service level agreements) between the service providers and the users. SLAs gives a transparent view to the cloud users which includes the delivery ability of a service provider, the performance target of the user’s requirement, the scope of guaranteed availability of the cloud services The main objective of this paper is to provide a clear idea about the cloud service level agreements and the cloud computing models.

A simple, reliable and selective square wave cathodic Adsorptive stripping (SWCAS) voltammetric method at modified carbon paste electrode (CPE) for determination of Cobalt(II) has been developed and evaluated. Square wave Cathodic Adsorptive Stripping Voltammetric (SWCASV) mechanism is proposed to interpret the amplified sensitivity. The procedure is based on the interfacial preconcentration of Cobalt (II) ion on magneson through a surface coordination effect. Different parameters such as medium, pH, accumulation potential, scan rate, accumulation time and ionic strength were tested to optimize the conditions for the determination of Cobalt(II) ion. The adsorbed form is reduced irreversible at optimal conditions viz; 0.15M Britton–Robinson universal buffer (pH~9.5). Linear concentration range 2×10-12 - 6×10-11 M (0.00012 – 0.00354 ng/mL (at 60s, can be determined successfully. The interferences of some common interfering species and some metal ions were studied. The application of the procedure in Lab tap water sample demonstrates that it is possible to determine Co(II) ion at a level as low as 5.13×10-10 mol/L (0.03 ng/mL) in real sample with a recovery of 103%, a standard deviation (triplicate measurements) of 3.08%, and a confidence level of 95%. The concentration of Co(II) in lab tap water sample was confirmed by analysis the sample by using Inductively Coupled Plasma Emission Spectrometer.

Dalit Christian is not recognised as a valid social category in India. Hence, they are not covered under any compensatory measures such as reservations and special legal safeguards which are otherwise extended to Dalits who belong to Hindu, Sikh and Buddhist communities, though caste-based prejudices are strong in Christianity and Dalit Christians too face similar forms of discrimination and exclusion as other Dalits. Though there is enough evidence in social science literature on the identity issues and discrimination faced by Dalit Christians, there remains several other questions to be addressed alongside while examining the claim for group-specific policy interventions for Dalit Christians. The most important one possibly is the caste-religion interface of non-Hindu Dalits. This is significant in the context that religion is the primary criterion to officially define Scheduled Castes in India as per the Constitutional Order of 1950. As per the formal definition “no person who confesses a religion different from the Hindu, Sikh and Buddhist religious conviction shall be considered to be a member of Scheduled Castes.” This paper attempts to address some of the questions using the available literature and official data. The study is largely based on the historical and current social science literature on caste among the Christians in India.