Advanced mechanics of materials with microstructure

The study of advanced materials aimed at improving human life has been performed since time immemorial. Such studies have created everlasting and greatly revered monuments and have helped revolutionize transportation by ushering the age of lighter–than–air flying machines. Hence a study of the mechanical behavior of advanced materials can pave way for their use for mankind’s benefit. In this school of thought, the aim of this dissertation is to broadly perform two investigations. First, an efficient modeling approach is established to predict the elastic response of cellular materials with distributions of cell geometries. Cellular materials find important applications in structural engineering. The approach does not require complex and time-consuming computational techniques usually associated with modeling such materials. Unlike most current analytical techniques, the modeling approach directly accounts for the cellular material microstructure. The approach combines micropolar elasticity theory and elastic mixture theory to predict the elastic response of cellular materials. The modeling approach is applied to the two dimensional balsa wood material. Predicted properties are in good agreement with experimentally determined properties, which emphasizes the model’s potential to predict the elastic response of other cellular solids, such as open cell and closed cell foams. The second topic concerns intraneural ganglion cysts which are a set of medical conditions that result in denervation of the muscles innervated by the cystic nerve leading to pain and loss of function. Current treatment approaches only temporarily alleviate pain and denervation which, however, does not prevent cyst recurrence. Hence, a mechanistic understanding of the pathogenesis of intraneural ganglion cysts can help clinicians understand them better and therefore devise more effective treatment options. In this study, an analysis methodology using finite element analysis is established to investigate the pathogenesis of intraneural ganglion cysts. Using this methodology, the propagation of these cysts is analyzed in their most common site of occurrence in the human body i.e. the common peroneal nerve. Results obtained using finite element analysis show good correlation with clinical imaging patterns thereby validating the promise of the method to study cyst pathogenesis

Prediction of Diffraction Wave for a Blunt Ship with Forward Speed

Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchiv

Tolkappiya Meyppatukalin ullitukalum Natrinai Mantarin ulaviyalum

Tholkappiyam is the most ancient extent Tamil grammer text and the oldest extant long work of Tamil Literature. The surviving manuscripts of the Tholka ppiyam consists of three books each with nine chapters namely Eluthu, Chol and porul. Among the nine chapters in porul, Maippattiyal is one of the above nine. It is named thus in view of the fact that it expounds the feelings and emotions.  The scholars will say the eight states of being beginning with Nagai, Azukai, ilivaral, Marutkkai, Acham, Perumitham, Vekuli, uvakai are the basic eight categories of Meyppadu. This Article Compares the above eight categories with Natrinai is a book of Ettuthogai a Sangam literature anthology. This belongs to Sangam Poetry of the oldest extant Tamil Literature

Sahitya Akademi Award Winning ‘Gopalla Gramam’ - An Information Repository

The purpose of this article is to explore the disappearing uniqueness in Rajanarayana's Sahitya Academy Award-winning novel Gopalla Gramam. It is said to be a novel. But there is no complete storytelling in this novel that is unique to a novel. So no specific characters were found. There is no continuous sequel in the storytelling process. However, it has acquired the unique status that a novel deserves. A lot of people exist in this. A lot of incidents do happen. The novel is considered to be a wonderful work that contains a lot of information and traces of time. The characters in this novel have every kind of relevance. The novel also explores the lifestyles and customs of different types of people, both socially and individually. It has also recorded social issues. Many colloquialisms that have been in circulation at that time are recorded. On the whole, the purpose of this article is to explore the availability of Ki Ra’s ‘Gopalla Gramam’ as an information repository

Alteration in Nasal Cycle Rhythm as an Index of the Diseased Condition

Breathing is the vital function based on the conductance of air through a system of branching tubes that taper off and eventually connect to the alveoli. Nose act as an interface between atmospheric air and lower respiratory system, constitute the moist respiratory epithelium, which performs various vital physiological functions like filtering the inspired air, warming, and humidifying. Several anatomical and physiological factors are responsible for the passage of airflow in two nostrils, which are asymmetric in nature. The inequality airflow passage in both the nostrils exists for a specific duration. This phenomenon of altering asymmetrical airflow from one nasal passage to the other is called ‘nasal cycle’. For every regular interval of time period, the swap of predominant nasal airflow between two nostrils determines the nasal patency. This cycle is controlled by the central regulator located at hypothalamus by coordinating the autonomic nervous system that comprises sympathetic and parasympathetic nerves that clog the nasal mucosa. The nostril decongest when the sympathetic nerves in one nostril become active. In this biorhythm, if the sympathetic nerves of one nostril drop, immediately the parasympathetic nerves take over, so that the other nostril congests. It is unclear why these cycles exist but the total nasal airway resistance is almost unchanged. There are a range of activities and reflexes, which can affect the nasal airway. This biorhythm is categorized under ultradian cycle since the mean duration of nasal cycle is about two and a half hours. In this study, it observed changes in nasal airflow duration, pattern, and rhythm that correspond to various disease states in human

Measuring Co- authorship Pattern in Research Output of Chromosome Anomalies

This article studies about the collaborative measures of published documents in the field of chromosome anomalies. It discusses about inadequacies of collaborative measures in analyzing the collaborating behavior and strength of collaboration in a discipline. It also suggests centrality measures, as degree centrality, closeness, and betweenness in analyzing the collaboration among the researchers and scientists in the field of chromosome anomalies. The bibliographical database PubMed is used as sources for bibliometrics and 35912 citations examined for co – authorship pattern, collaborative behavior of the scientists. Centrality measures were used to construct a network for co – authorship in chromosome anomalies research during the year 2007 – 2016 and to find out the most influential predominant author in the field

Personality Traits in Kovurkizhar Songs

Kovoorkizhar was one of the most scholarly poets of the Sangam age. He is one of the 15 Kizhar poets in the Purananooru. Supported by the Chola dynasty, he was of the view that there should be love, righteousness, and peace in politics. It is to be seen from his Purananooru songs in this thesis that the ruling kings, however, kept their anger aside and worked diligently to change their wrong policies and make them better. There are 15 songs in Purananooru sung by him. Of these, the four songs from 44 to 47 in the Purananooru can identify his personality traits. The songs were performed in person by the four Chola kings (Nalankilli, Nedunkilli, Kulamuruthathu, Thunjiya Killivalavan, and Kurapalli Thunjiya Killivalavan) speak volumes about their power and virtues. He has also highlighted the personality traits of the kings featured in those songs. It is to be noted that Kovoor Kizhar sang two of the six songs (68 and 70) in Purananooru about the field of Panatruppadai. It is explained in this review that the poets featured in these songs were selfless and respected the welfare of others. Along with these, a song (308) is featured in the Mullaithurai of Moodin, sung by Kovoorkizhar. This thesis describes the lives of the Panars and the great power of the King of Seerur

Inherited and acquired vitamin B12 deficiencies: Which administration route to choose for supplementation?

Vitamin B12 or cobalamin deficiency is a commonly encountered clinical scenario and most clinicians will have familiarity prescribing Vitamin B12 to treat their patients. Despite the high prevalence of this condition, there is widespread heterogeneity regarding routes, schedules and dosages of vitamin B12 administration. In this review, we summarise the complex metabolic pathway of Vitamin B12, the inherited and acquired causes of Vitamin B12 deficiency and subsequently highlight the disparate international practice of prescribing Vitamin B12 replacement therapy. We describe the evidence base underpinning the novel sublingual, intranasal and subcutaneous modes of B12 replacement in comparison to intramuscular and oral routes, with their respective benefits for patient compliance and cost-saving

Effect of yogic practices on selected physiological variables among hypertensive middle-aged women

The purpose of the random group experimental study was to investigate the effect of Yogic Practices on selected Physiological variables such as Systolic, Diastolic and Body Mass Index (BMI) among Hypertensive middle aged women. It was hypothesized that there would be a significant difference due to Yogic Practices on selected Physiological variables such as Systolic, Diastolic and Body Mass Index (BMI) among Hypertensive middle-aged women than the control group. Random group experimental design was used. The random sampling design was followed to select the subjects. To achieve the purpose of the study, 30 women between the age 45 and 55 years were selected randomly from Chennai and they were divided into two groups such as Yogic Practices (Group A) and Control Group (Group B). Each group consists of 15 subjects. The pre-test was taken for the two Groups on the selected dependent variables before the start of the training program. Group A was undergoing Yogic Practices for 12weeks, 6 days a week, One-hour maximum daily and Group B (Control Group) was permitted to undergo their normal lifestyle (active rest) during the course of the experiment. After the experimental period of 12 weeks, Post-tests were conducted for the two groups on selected dependent variables. The selected Physiological variables such as Systolic, Diastolic and Body Mass Index (BMI) were measured through Lab test. Analysis of Co-Variance (ANCOVA) was used to find out the significant difference between experimental group and the Control Group. The test of significance was fixed at 0.05 level of confidence. It was concluded that Yogic Practices improved Physiological variables among Hypertensive middle-aged women than the Control Group. Hence, the hypothesis was accepted at 0.05 level of confidence