scholarly journals XXVII.—On the Specific Gravity of certain Substances commonly considered lighter than Water

1844 ◽  
Vol 15 (3) ◽  
pp. 387-395
Author(s):  
John Davy

That the common varieties of wood which float in water, owe their apparent lightness to air contained in their structure, is generally admitted by those who have paid any attention to the subject. By means of the air-pump, the fact is clearly demonstrated. Under the exhausted receiver, after a certain time, the time varying with the quality of wood, all the different specimens which I have tried have sunk; I may mention two or three in particular, as examples. A piece of oak, weighing 29.7 grs., sank in distilled water, after having been subjected to the air-pump three days;—a piece of deal, weighing 16.3 grs., similarly acted on, floated ten days;—and a portion of the pith of the elder, weighing only .133 grain, floated seven days.

1845 ◽  
Vol 1 ◽  
pp. 424-426
Author(s):  
Davy

The author enters on the subject by adverting to the apparent lightness imparted to the common woods, and to certain vesicular minerals, by the entanglement of air in their substance, as is commonly understood, and as is proved by the action of the air-pump. The specific gravity of oak-wood, after having been kept under the exhausted receiver till it sunk in water, and ceased to give off air, he found to be (inclusive of hygrometric moisture) 1.58; that of deal, 1.18, or when crushed about 1.5; that of the pith of the elder, 1.45; and that of pumice, 1.94, or crushed, 2.41, which is nearly the same as that of obsidian, from which pumice appears to be formed by the action of volcanic fire.


1803 ◽  
Vol 93 ◽  
pp. 195-199

The functions of the eye, so far as they are physical, have been found subject to the common laws of optics. It cannot be expected that chemistry should clear up such obscure points of physiology, as all the operations of vision appear to be; but, some acquaintance with the intimate nature of the substances which produce the effects, cannot fail to be a useful appendage to a knowledge of the mechanical structure of the organ. The chemical history of the humours of the eye, is not of much extent. The aqueous humour had been examined by Bertrandi; who said, that its specific gravity was 975, and therefore less than that of distilled water. Fourcroy, in his Système des Connoissances chimiques , tells us, that it has a saltish taste; that it evaporates without leaving a residuum; but that it contains some animal matter, with some alkaline phosphate and muriate. These contradictions only prove, that we have no accurate knowledge upon the subject.


2017 ◽  
Vol 6 (1) ◽  
pp. 305
Author(s):  
Gopinath N. Sharma

Most of the philosophers deal with the quality of life, assuming a long span covering all phases. Therefore it is a commonly idealized life. But during the course the life as we advance, there are numerous riddles of self and the universe we live in it to encounter. Certain questions that have not only puzzled the common man but also the intellectuals had been like, Is there any meaning behind every happening? How ought we to live? Is there any life after death? Is death as such is the true end of all activities and so on. However, when the subject of death comes the answers through theories or philosophies have not been very convincing or suitable to all the rungs of the society. This could be mostly due to our evading the very subject of death much owing to the general uneasiness, fear and a sort of psychological insecurity, while dealing with it. Therefore it is always easy to raise philosophical questions than to answer them. There are almost two dozen theories in vogue which have certain basic assumptions but somehow they do not fall in the domain of truly scientific inquiry. They are to be accepted as an outcome of religious sentiments or wishful thinking. This paper highlights the salient features of Indian philosophical viewpoint with regard to death.


1863 ◽  
Vol 9 (47) ◽  
pp. 396-398
Author(s):  
Thomas B. Peacock

“In 1847 (says Dr. Peacock), I published a series of weights of the human brain, collected at the Royal Infirmary of Edinburgh, together with tables prepared from these observations, together with the much larger number of weights previously recorded by the late Professor John Reid. The observations which follow have been obtained since that time, and though comparatively few in number, yet, as they are not likely to be materially increased and may furnish a useful comparison with the former, I have thought them worthy of being placed on record. The observations on the specific gravity of the brain are entirely new. They were obtained by a different mode from that followed by Dr. Sankey, in his observations of the specific gravity of the healthy brain, and by Dr. Bucknill in his investigation of the density of the brain of insane persons. The former of these observers ascertained the specific gravity of the different portions of the brain, by placing pieces in solution of common salt of different densities; the latter adopted a similar plan, except that he employed solutions of Epsom salts. My own observations were made by first weighing the brain and its several portions in air, and then in distilled water, and calculating the specific gravity by the common formula, viz., as the weight lost by the brain in water is to the weight in air, so is the specific gravity of distilled water (1000) to the weight required.”


Author(s):  
AWODUN ADEBISI OMOTADE ◽  
J.O. BABALOLA

This paper examines the expected traits of a language teacher especially in a multilingual society. The peculiar linguistic attributes are scrupulously considered as each letter of the word TEACHER is used to bring out the required linguistic pedagogical culture. The common occurrence of students’ mass failure in English language as witnessed in the various competitive examinations and the rapid decline in the quality of teachers in charge of the subject in schools bring to the fore the concern for its pedagogical appraisal especially in the area of teachers’ preparation for the sensitive job. The work is expository as some common factors were brought out and used to treat the expected teachers’ behavior in language teaching activities. The writer’s exposure and experience in the job supply the root for all the issues raised in the work. Based on the considered factors, it is recommended that the personnel that handle the training of teachers in the higher institution must be exposed to the real practical aspect of the work. Through this, well trained, brilliant, interested and committed individuals will be discovered on the field to take care of students who opt for teaching career in the colleges of education and in the faculty of education in the universities. When the stream is progressive and hard work is rewarded, teachers will be dedicated to work and be related to stand up as models to the students.


2013 ◽  
pp. 77-90
Author(s):  
Yen Nguyen Thi Hoang

This paper focuses on the understanding of service quality in the context of Vietnamese universities. It proposes an approach for measuring the quality of the higher education service provided by universities in Vietnam. Firstly, an exploratory study was conducted. Then, the set of items which were generated became the subject of a questionnaire that was then administered to 675 students of a Vietnamese university to determine the dimensions of higher education service quality in this context. The obtained results permit us to appropriate a measurement scale which is slightly different from the SERVQUAL scale widely known as the standard for measuring service quality. The results also show that tangible elements, responsiveness and assurance seem to be three specific dimensions of the higher education service of Vietnamese universities.


Moreana ◽  
2002 ◽  
Vol 39 (Number 149) (1) ◽  
pp. 41-60 ◽  
Author(s):  
Eugenio M. Olivares Merino
Keyword(s):  

The recent reprinting of Álvaro de Silva’s 1998 edition of a selection of More’s letters prompts the author to examine the subject of Spanish translations of More, and of de Silva’s general commentary on More’s correspondence and on his relationship to other humanists. The author reflects on aspects of More’s personality as exposed in his letters and uses what he finds as a corrective to several biographical misconceptions. He points out the strengths and weaknesses of de Silva’s work and compares it with that of other translators, particularly Elizabeth Rogers, and notes the particularly Spanish quality of de Silva’s edition.


2020 ◽  
Vol 23 (10) ◽  
pp. 1182-1194
Author(s):  
A.A. Akhmetzyanov ◽  
A.Yu. Sokolov

Subject. The article focuses on the advanced time-driven tools for allocating overhead expenses, which are based on process-based budgeting. Objectives. We articulate a technique for cost allocation so as to assess the cost of each process with reference to the common time driver. Methods. The study relies upon methods of systematization, classification, analogy and comparison, and summarizes the scientific literature on the subject. Results. The article presents our own suggestions on implementing TD-ABC and TD-ABB into the strategic management accounting process of developer companies. The principles were proved to help more effectively allocate overhead expenses and assess the capacity load of each process performed by functions, departments and employees. Carrying out a comparative analysis, we found certain reserves for utilizing resources more effectively. Conclusions and Relevance. The findings are of scientific and practical significance and can be used by developer and construction businesses. The conclusions can prove helpful for scientific papers, student books, and further research.


2020 ◽  
Vol 26 (11) ◽  
pp. 2567-2593
Author(s):  
M.V. Pomazanov

Subject. The study addresses the improvement of risk management efficiency and the quality of lending decisions made by banks. Objectives. The aim is to present the bank management with a fair algorithm for risk management motivation on the one hand, and the credit management (business) on the other hand. Within the framework of the common goal to maximize risk-adjusted income from loans, this algorithm will provide guidelines for ‘risk management’ and ‘business’ functions on how to improve individual and overall efficiency. Methods. The study employs the discriminant analysis, type I and II errors, Lorentz curve modeling, statistical analysis, economic modeling. Results. The paper offers a mechanism for assessing the quality of risk management decisions as opposed to (or in support of) decisions of the lending business when approving transactions. The mechanism rests on the approach of stating type I and II errors and the corresponding classical metric of the Gini coefficient. On the ‘business’ side, the mechanism monitors the improvement or deterioration of the indicator of changes in losses in comparison with the market average. Conclusions. The study substantiates the stimulating ‘rules of the game’ between the ‘business’ and ‘risk management’ to improve the efficiency of the entire business, to optimize interactions within the framework of internal competition. It presents mathematical tools to calculate corresponding indicators of the efficiency of internally competing entities.


2016 ◽  
Vol 2 (2) ◽  
pp. 81
Author(s):  
Arkadiusz Urbanek

The aspiration to keep the synergy in relations between majorities and minorities repeatedly emerges as the cause of conflicts in social relations. It is also a subject of the interest of the multicultural education, particularly in countries of Eastern Europe, building contacts with the culturally and ethnically diverse groups to a wider scale. Relations in culturally, religiously and ethnic diverse societies, are becoming more and more related to the personal attitudes and a given policy. These issues acquire in the prison circumstances even greater significance, as given moods and personal attitudes of the prison staff create the pragmatic aspects of the professional activities addressed to the sentenced. Additionally, the key role is played by the quality of the penitentiary policy and the legal culture. The article presents the comparative analysis of the research carried out in 2016 amongst the prison staff in Poland. The subject of the research concerned attitudes that influence the decisive processes. The personal relations have been analyzed in the context of the relation with the sentenced Muslims. The aim of the research was not only to reveal the quality of the decisions concerning the sentenced Muslims, but also the sources of such decisions. The latter, in consequence, may shift, as the research results prove, towards synergy or discrimination. The diversification of the discrimination was one of the intriguing aspects, disclosed at various levels that not always explicitly concerned the discrimination of the minority.


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