Experimental Measurement of Turbulent Diffusion, Initial Dilution and T90

1986 ◽  
Vol 18 (11) ◽  
pp. 131-140
Author(s):  
Edmundo Garcia Agudo ◽  
Jose Leomax dos Santos

The final disposal of sewage using submarine outfalls has become an actual solution for coastal cities all over the world. In order to get the best results it is necessary to carry out specific studies for the proper design of the outfall. Dilution and decrease in bacterial concentrations are two key aspects for the design. Radioisotope tracers have been used extensively in studies performed in some Brazilian waterbodies where outfall systems exist or are to be installed. As far as dilution measurement is concerned, both point and continuous radiotracer injections can provide useful results. The T90 measurements can be better accomplished using a combined tracer technique for sampling the sewage field, using the radiotracer for dilution measurement and rhodamine B as a visual aid. Typical results of dilution measurement using both techniques mentioned, as well as a summary of T 90 results obtained for the Santos, Fortaleza and Maceió outfalls are presented.

Author(s):  
Оlena Fedorіvna Caracasidi

The article deals with the fundamental, inherent in most of the countries of the world transformation of state power, its formation, functioning and division between the main branches as a result of the decentralization of such power, its subsidiarity. Attention is drawn to the specifics of state power, its func- tional features in the conditions of sovereignty of the states, their interconnec- tion. It is emphasized that the nature of the state power is connected with the nature of the political system of the state, with the form of government and many other aspects of a fundamental nature.It is analyzed that in the middle of national states the questions of legitima- cy, sovereignty of transparency of state power, its formation are acutely raised. Concerning the practical functioning of state power, a deeper study now needs a problem of separation of powers and the distribution of power. The use of this principle, which ensures the real subsidiarity of the authorities, the formation of more effective, responsible democratic relations between state power and civil society, is the first priority of the transformation of state power in the conditions of modern transformations of countries and societies. It is substantiated that the research of these problems will open up much wider opportunities for the provi- sion of state power not as a center authority, but also as a leading political structure but as a power of the people and the community. In the context of global democratization processes, such processes are crucial for a more humanistic and civilized arrangement of human life. It is noted that local self-government, as a specific form of public power, is also characterized by an expressive feature of a special subject of power (territorial community) as a set of large numbers of people; joint communal property; tax system, etc.


Around the world, people nearing and entering retirement are holding ever-greater levels of debt than in the past. This is not a benign situation, as many pre-retirees and retirees are stressed about their indebtedness. Moreover, this growth in debt among the older population may render retirees vulnerable to financial shocks, medical care bills, and changes in interest rates. Contributors to this volume explore key aspects of the rise in debt across older cohorts, drill down into the types of debt and reasons for debt incurred by the older population, and review policies to remedy some of the financial problems facing older persons, in the United States and elsewhere. The authors explore which groups are most affected by debt, and they also identify the factors causing this important increase in leverage at older ages. It is clear that the economic and market environments are influential when it comes to saving and debt. Access to easy borrowing, low interest rates, and the rising cost of education have had important impacts on how much people borrow, and how much debt they carry at older ages. In this environment, the capacity to manage debt is ever more important as older workers lack the opportunity to recover for mistakes.


1964 ◽  
Vol 54 (5A) ◽  
pp. 1459-1471
Author(s):  
S. K. Chakrabarty ◽  
G. C. Choudhury ◽  
S. N. Roy Choudhury

Abstract The general solution of the equations connecting the motion of the two coupled components in an electromagnetic seismograph has been obtained in another paper and it shows that the magnification of a seismograph depend on seven instrumental constants. Using these results, equations and curves have been derived in the present paper from which the Magnification as well as Phase shifts in the response of a seismograph and their variations with damping and coil inductance can be easily obtained. Based on these curves a number of magnification curves for different combinations, which are in operation at the different seismological stations of the world, have been derived. Suitable equations and curves have also been obtained which can be used for estimating the absolute Magnification of a Seismograph. An experimental method of obtaining the frequency response curves of seismographs in their operating condition has been described and the results obtained by this method has been given. It has been indicated how the results incorporated in the present paper can be used in the proper design of seismographs required for the different purposes.


Author(s):  
Alejandro Rodríguez-Refojo

Se analizan los símbolos de la barca, la casa y la piedra, así como la metáfora del Libro del Mundo, en la obra poética de Andrés Sánchez Robayna. El análisis se apoya en las aportaciones de la simbología y la historia de las religiones con el objetivo de esclarecer algunos aspectos clave de la cosmovisión del autor y de su poética. La presencia de imágenes pertenecientes al simbolismo del centro, la concepción de la poesía como enigma y la indagación en la memoria como una parte fundamental del proceso creador constituyen los elementos que conducen al surgimiento de una conciencia religiosa del mundo.                                                                                                                                                                                                              This paper aims to analyse three symbols presented in Andrés Sánchez Robayna’s work of poetry: the boat, the house, the stone, and the metaphor of the Book of the World. This analysis is supported by contributions in the fields of symbolism and history of religions and it seeks to shed light on some key aspects of the author’s poetics and world view. The imagery related to the symbolism of the centre, the conception of poetry as an enigma and the search through memory as an essential phase in the creative process represent the main elements which lead to the emergence of a religious view of the world.


2021 ◽  
Vol 20 (3) ◽  
pp. 132-139
Author(s):  
А. L. Kozlova ◽  
М. Е. Leonteva ◽  
V. I. Burlakov ◽  
Z. А. Nesterenko ◽  
О. М. Laba ◽  
...  

The article is devoted to an extremely rare variant of type I interferonopathies associated with a homozygous gain of function (GOF) mutation in the STAT2 gene in a 5-year-old child. This genetic defect was first described in 2019, and so far only 3 cases are known in the world with a similar pathology. Here we present the fourth clinical case and our experience in managing a patient with STAT2 GOF. The article presents the key aspects of the pathogenesis, clinical picture based on the analysis of all known cases of the disease. The absence of established criteria and methods of treatment for this disease is due to the rarity and relative novelty of the described nosology. We present the experience of treatment using a JAK kinase inhibitor, followed by an assessment of the effectiveness of the therapy and side effects. The patient's parents agreed to use the information, including the child's photo, in scientific research and publications.


2020 ◽  
Vol 7 (1) ◽  
pp. 22-28
Author(s):  
Vladimir Eliseev ◽  
Anastasiya Gurina

  Abstract— The paper investigates the causes of widespread use by cybercriminals of the Internet of Things for organizing network attacks and other illegal use. An analysis of existing approaches and technologies for protecting networked computer devices is presented, as well as the main factors that prevent their use in the world of Internet of Things. An approach is suggested that ensures the integration of protective mechanisms directly into the composition of Things. Various variants of technology implementation are considered. Key aspects and potential ways of implementing the proposed approach are noted.Tóm tắt— Bài báo nghiên cứu về các phương thức được tội phạm mạng sử dụng rộng rãi trong Internet vạn vật (IoT), để tổ chức các tấn công mạng và các hành vi bất hợp pháp khác. Bài báo phân tích các phương pháp và công nghệ hiện có để bảo vệ các thiết bị kết nối mạng, cũng như các yếu tố chính để ngăn chặn việc sử dụng chúng trong IoT. Cách tiếp cận được đề xuất là đảm bảo việc tích hợp các cơ chế bảo vệ trực tiếp vào cấu trúc của IoT. Bài báo cũng xem xét các biến thể khác của việc thực hiện công nghệ này. Từ đó, đưa ra lưu ý về các khía cạnh chính và cách thức cài đặt tiềm năng để thực hiện phương pháp được đề xuất. 


Author(s):  
Markus Eberl

This chapter employs the famous rabbit-duck illusion to develop a dialectical approach to change. While individuals perceive only rabbit or duck at a given moment, most, if not all, can also see the other. Switching back and forth between the rabbit and the duck creates consciousness about knowledge. This dialectical approach is applied to a symbolic model of creativity. The latter refers to the human capacity to question interpretations of the world and to find new relationships among constituent elements. Metonyms and metaphors are fundamental to human discourse and link knowledge domains in newbutincomplete ways. By hovering between domains, they build meta-awareness. The ancient Maya creator, the god Itzamnaaj, helps to illustrate key aspects of this model of creativity.


Author(s):  
Aaron S. Blicblau ◽  
Jamal Naser

The pedagogy of engineering requires a better understanding of the requirements of students' abilities to learning the skills necessary for working in the engineering community. In many engineering courses around the world, one of the key aspects required of the students is that they complete an independent project in their final year of studies incorporating information retrieval and subsequent communication skills. The current work provides details teaching and learning approaches to enhance student abilities and expertise involving research skills, communication skills, and information retrieval integrated within capstone projects. Findings from this the work indicated that both domestic and international students benefited from the intensive tutorial activities involving computer based information retrieval skills. The implementation of active tutorial sessions resulted in increased grades for the majority of students, highlighting the importance of intensive active learning events for final year capstone engineering students.


2020 ◽  
Vol 9 (3) ◽  
pp. 181-186
Author(s):  
Jashim Uddin Ahmed ◽  
Ayesha Tahsin Ananya ◽  
Kazi Pushpita Mim ◽  
Asma Ahmed ◽  
Sarika Iqbal

Barbie in a wheelchair has heralded a new era in the magical world of Barbie. Mattel, one of the biggest toy manufacturers, has redefined the way Barbie has been portrayed to the world by introducing their new Black Barbie in a wheelchair. After years of innovation and trial and errors, it has proved that Barbie is not just a make-believe plaything or a representation of a singular aspect of beauty standards. These dolls should be relevant and wholesome when it comes to creating a bridge between customers and the brand itself. Mattel realized not too long ago the significance of inclusion, and now it has ended up hoisting a sensation in all of the United States and globally through the Internet and social media such as Twitter. The IDIC (Identify, Differentiate, Interact and Customize) model, which is an effective customer relationship management (CRM) tool, has been deployed by Mattel to demonstrate how Mattel cares for its customers. Mattel’s customer centrism, devotion towards innovation and inclusiveness are the key aspects which has rewarded the company with a whole new spectrum of acceptance from minority groups with a smile on their faces.


2018 ◽  
Vol 7 (4.35) ◽  
pp. 282
Author(s):  
Nirvenesh Ravindran ◽  
Hassan Mohamed

Amblyopia is the most commonly found monocular visual impairment in the world. This paper presents an initial investigation into developing a visual aid for monocular visual impaired patients. The investigations conducted in this paper include those from direct interviews from consultant ophthalmologist. Investigations include reviewing the principle required to be embedded into the visual aid such as the distance and depth perception. Stereoscopic cameras and algorithms are also further discussed to interlink with the concepts of depth perception. Monocular visual impairment can most of the time be caused by medical conditions like amblyopia or glaucoma, and rarely caused by accidents and external factors. Thus, existing treatments for amblyopia, the effectiveness and challenges of the treatment are also clearly investigated and scrutinized in this paper. Some of the existing treatments include refractive therapy, occlusion therapy, atropine injections, perceptual learning, pharmacological treatment and acupuncture. This study has provided a clear insight into the requirements of developing a visual aid, thus further addressing the challenges faced by the treatments in this impairment.


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