Stratified rotating flow over and around isolated three-dimensional topography

1987 ◽  
Vol 322 (1564) ◽  
pp. 213-241 ◽  
Keyword(s):  
Numerical Model ◽  
Three Dimensional ◽  
Wave Pattern ◽  
The Body ◽  
Lee Waves ◽  
Lee Wave ◽  
Long Time ◽  
Dynamical Parameters ◽  
The Right ◽  
Eddy Shedding

Laboratory and numerical experiments have been conducted on the flow of a linearly stratified rotating fluid past isolated obstacles of revolution (conical and cosinesquared profiles). Laboratory experiments are considered for a range of Rossby, Ekman and Burger numbers, the pertinent dynamical parameters of the system. In these experiments, inertial, Coriolis, pressure, viscous and buoyancy forces all play a significant role. Emphasis is given to examining the nature of the time development of the flow fields as well as its long-time behaviour, including eddy shedding. It is shown, for example, that increased stratification tends to diminish the steering effect of the obstacle, other parameters being fixed, at elevation levels above the topography. At levels below the top of the obstacle, increased stratification tends to force the fluid around rather than over the body and this, in turn, tends to develop vortex shedding at smaller Reynolds numbers than would occur in corresponding lower stratification cases. Data for the cone reveal that the Strouhal number for the eddy-shedding regime is relatively insensitive to the values of Ro , Ek and S for the range of parameters investigated. Stratification tends to induce lee waves in the topography wake, and the nature of this lee-wave pattern is modified by the presence of rotation. For example, it is demonstrated that for vertically upward rotation, the lee waves on the right, facing downstream, have a larger amplitude than their counterparts at the same location on the left. The steering effects, as predicted by a three-level quasigeostrophic numerical model, are shown to be in good agreement with the laboratory results for a narrow range of parameter space. The numerical model is used to examine the effects of rotation, friction and stratification in modifying the flow. The quasigeostrophic numerical simulations do not produce eddy shedding, and it is concluded that a full, primitive equation numerical model would be needed to explore this phenomenon.

The Role of Spices with reference Novel Coronavirus Covid 19

2020 ◽  
Vol 11 (SPL1) ◽  
pp. 1655-1661
Author(s):  
Roshna Sukheoji Bhutada ◽  
Kritika Umate
Keyword(s):  
Viral Infections ◽  
The Body ◽  
Common People ◽  
Supplementary Food ◽  
Long Time ◽  
Novel Coronavirus ◽  
The Right ◽  
Common Spices ◽  
Physiological Reactions

The need of the day is a brisk lift to the resistant framework to keep it fit, battling today pandemic infections, for example, Covid — 19. One should get the right amount of nutrients from the diet, supplementation regimen to boost the immune system. These spices are always there to make tasty food as well as to protect the body from infectious diseases by building the immunity strong Ayurveda approaches to develop physiological reactions to facilitate immunity. Planning of diet is most important to boost immunity. As per many types of research to provide supplementary food which contains Zinc, Vitamin C, Vitamin D and immunity boosting food such as dealing with plenty of spices for a very long time. These spices include some rare to very common spices which we can found near us. The concern is that these viral infections are very prone to attack weak immunity and take the chance to affect the country to the globe. So the very common spices available will be always helpful to get through this Regular use of a few spices in the very simple form proves its importance as a medicine. In this article a review of spices is done which we are available near us, we are using it in our daily life and we are getting the benefit of these which a common people might not be fully aware of about role of immunity building of the body. 

A Liberating Experience. On Becoming a Work of Art

2020 ◽  
Vol 7 (2) ◽  
pp. 411-430
Author(s):  
Maja Tabea Jerrentrup
Keyword(s):  
Three Dimensional ◽  
The Body ◽  
The Other ◽  
Work Of Art ◽  
Other Hand ◽  
Film Clips ◽  
Long Time ◽  
The One ◽  
Body Painting ◽  
Dimensional Surface

Abstract The art of bodypainting that is fairly unknown to a wider public turns the body into a canvas - it is a frequently used phrase in the field of bodypainting that illustrates the challenge it faces: it uses a three-dimensional surface and has to cope with its irregularities, but also with the model’s abilities and characteristics. This paper looks at individuals who are turned into art by bodypainting. Although body painting can be very challenging for them - they have to expose their bodies and to stand still for a long time while getting transformed - models report that they enjoy both the process and the result, even if they are not confident about their own bodies. Among the reasons there are physical aspects like the sensual enjoyment, but also the feeling of being part of something artistic. This is enhanced and preserved through double staging - becoming a threedimentional work of art and then being staged for photography or film clips. This process gives the model the chance to experience their own body in a detached way. On the one hand, bodypainting closely relates to the body and on the other hand, it can help to over-come the body.

Forcing of oceanic mean flows by dissipating internal tides

2012 ◽  
Vol 708 ◽  
pp. 250-278 ◽  
Author(s):  
Nicolas Grisouard ◽  
Oliver Bühler
Keyword(s):  
Numerical Study ◽  
Three Dimensional ◽  
Wave Drag ◽  
Perturbation Series ◽  
Internal Tides ◽  
Time Averaging ◽  
Mean Flow ◽  
Wave Source ◽  
Lee Waves ◽  
Lee Wave

AbstractWe present a theoretical and numerical study of the effective mean force exerted on an oceanic mean flow due to the presence of small-amplitude internal waves that are forced by the oscillatory flow of a barotropic tide over undulating topography and are also subject to dissipation. This extends the classic lee-wave drag problem of atmospheric wave–mean interaction theory to a more complicated oceanographic setting, because now the steady lee waves are replaced by oscillatory internal tides and, most importantly, because now the three-dimensional oceanic mean flow is defined by time averaging over the fast tidal cycles rather than by the zonal averaging familiar from atmospheric theory. Although the details of our computation are quite different, we recover the main action-at-a-distance result from the atmospheric setting, namely that the effective mean force that is felt by the mean flow is located in regions of wave dissipation, and not necessarily near the topographic wave source. Specifically, we derive an explicit expression for the effective mean force at leading order using a perturbation series in small wave amplitude within the framework of generalized Lagrangian-mean theory, discuss in detail the range of situations in which a strong, secularly growing mean-flow response can be expected, and then compute the effective mean force numerically in a number of idealized examples with simple topographies.

Three-Dimensional Analysis of the Cranio-Cervico-Mandibular Complex During Piano Performance

2014 ◽  
Vol 29 (3) ◽  
pp. 150-154 ◽  
Author(s):  
M Clemente ◽  
S Lourenço ◽  
D Coimbra ◽  
A Silva ◽  
J Gabriel ◽  
...  
Keyword(s):  
Dimensional Analysis ◽  
Musculoskeletal Pain ◽  
Three Dimensional ◽  
Musical Performance ◽  
Piano Performance ◽  
Preliminary Results ◽  
Long Time ◽  
The Right

Piano players, as well as other musicians, spend a long time training to achieve the best results, sometimes adopting unnatural body positions that may cause musculoskeletal pain. This paper presents the preliminary results of a study targeting the analysis of the head and cervical postures of 17 piano players during musical performance. It was found, as a common feature, that the players tilt the head to the right and forward towards the score and keyboard. Players who know the score by heart tend to move their heads more compared to the ones who have to keep their eyes on the score.

Investigation into effects of cooling rate on properties of polyamide 12 parts in the multi jet fusion process

2020 ◽  
Vol 26 (10) ◽  
pp. 1789-1795
Author(s):  
Mattia Mele ◽  
Giampaolo Campana ◽  
Gregorio Pisaneschi ◽  
Gian Luca Monti
Keyword(s):  
Cooling Rate ◽  
Three Dimensional ◽  
The Body ◽  
Scanning Calorimetry ◽  
Content Type ◽  
Polyamide 12 ◽  
Body Of Knowledge ◽  
Cooling Phase ◽  
The Right ◽  
High Building

Purpose Multi jet fusion is an industrial additive manufacturing technology characterised by high building speed and considerable properties of the parts. The cooling phase represents a crucial step to determine productivity, since it can take up to 4.5 times the building time. The purpose of this paper is to investigate into effects of cooling rate on parts manufactured by multi jet fusion. Crystallinity, density, distortions and mechanical properties of specimens produced through an HP multi jet fusion 4200 are examined. Design/methodology/approach An experimental activity is carried out on specimens cooled down at three different rates. Properties of the parts are analysed by means of differential scanning calorimetry, optical microscopy, three-dimensional scanning and tensile testing. Originality/value The present work makes a contribution to the body of knowledge providing correlations between the cooling phase of multi jet fusion and part properties. These results can be used to choose the right balance between production time and product quality.

scholarly journals La Concretización de la Justicia Ambiental: Caso del Rio Santiago en los Municipios de El Salto y Juanacatlán

Sincronía ◽  
2021 ◽  
Vol XXV (80) ◽  
pp. 675-705
Author(s):  
Elizabeth Leticia Souza Mosqueda ◽  
◽  
Martín Moreno Reynaga ◽  
Angelica Jesús Ceceña Altamirano ◽  
Cynthia Ramírez Ramírez ◽  
...  
Keyword(s):  
Research Work ◽  
Legal Framework ◽  
The Body ◽  
Long Time ◽  
The Creation ◽  
Del Rio ◽  
The Right ◽  
Bodies Of Water

This research work develops the problem of the application of the legal framework of the right to water for its protection and reparation as well as to the environment, since this is closely related to the first mentioned right, when there is an affectation. For this, we study the case of the Santiago River, one of the most important bodies of water in Mexico and with the longest length.For this reason, when we talk about the Santiago River we will refer to the body of water located in the municipalities of Juanacatlán and Salto del State of Jalisco, which, for a long time, was contaminated by dumping various types of substances, without measures being taken to reduce said activity to date. This is done with the study of the national and international legal framework on the matter, to later develop the circumstances in which they caused the damage to the River, and like these, they encouraged the various authorities to issue resolutions trying to repair the damage. Despite the existence of such determinations, they are not sufficient for the protection of this right, so in the end we propose the creation of an environmental court that is capable of solving these types of problems.

scholarly journals Three-dimensional lee-wave pattern

1978 ◽  
Vol 104 (442) ◽  
pp. 947-957 ◽  
Author(s):  
B. Gjevik ◽  
T. Marthinsen
Keyword(s):  
Three Dimensional ◽  
Wave Pattern ◽  
Lee Wave

scholarly journals The case of Graviditatis tubo-uterinae with a favorable outcome of labor per vias naturales

2020 ◽  
Vol 5 (7-8) ◽  
pp. 650-651
Author(s):  
D. Ruzi
Keyword(s):  
Fallopian Tube ◽  
Interesting Case ◽  
The Body ◽  
Favorable Outcome ◽  
Dead Child ◽  
Long Time ◽  
The Right

The author describes a very interesting case of tubo-uterine pregnancy, which ended in per vias naturales delivery. His story is as follows. Free 27 years old. Regules appeared on the 16th year. The first pregnancy 10 years ago ended in a miscarriage at 4 months. Urgent delivery 4. After the last urgent delivery suffered from cervical endometritis. From the last pregnancy was resolved on 24 July 1890 at the 7th month of a dead child, after which she was ill for a long time. The last regulations were on October 11, 1890. At the end of November, the body of the uterus appeared to be enlarged, doughy consistency, the right fallopian tube at the uterine end was significantly enlarged and painful. Pregnancy was diagnosed.

scholarly journals NUTRITIONAL DEFICIENCIES: A REVIEW

2021 ◽  
Vol 6 (5) ◽  
Author(s):  
Aleena s kumar
Keyword(s):  
Genetic Disorders ◽  
Nutritional Deficiency ◽  
The Body ◽  
Nutritional Deficiencies ◽  
Treatment And Prevention ◽  
Low Health Literacy ◽  
Hidden Hunger ◽  
The World ◽  
Long Time ◽  
The Right

Nutrients like proteins, vitamins, minerals, carbohydrates and lipids are required for the right function of our body. Nutritional deficiency disorders are a major problem faced by the world, millions of people in the world suffer from undernourishment. Deficiency occurs when the food we are consuming does not contain the required amount of nutrients or when our body is not being able to absorb nutrients due to some genetic disorders or other secondary reasons. Nutritional deficiency is considered as the ‘hidden hunger’ and a person can suffer from deficiency of vitamins, proteins, minerals, carbohydrates and fatty acids. This review describes the different types of nutritional deficiencies, their causes, symptoms, treatment and prevention. The deficiencies are mostly asymptomatic but in a long time can very adversely affect the body functions and impair the immune system and cause chronic illness and infections. The severity of symptoms and the treatment varies from person to person. Poverty and low health literacy are the most important reasons for the prevalence of nutritional deficiencies in the world. However, these deficiencies can be prevented by promoting health education among adults, encouraging a healthy and active lifestyle and providing nutritional and healthy food to the ones who do not have access to it. Nutrition campaigns, supplementation and genetic engineering of plants and food crops has decreased the pervasiveness of deficiency disorders.

scholarly journals Early experience of stereotactic biopsy of brain lesion in tertiary centre of Nepal

2021 ◽  
Vol 18 (1) ◽  
pp. 51-56
Author(s):  
Binit Kumar Jha ◽  
Prabhat Jha ◽  
Rajiv Jha ◽  
Prakash Bista
Keyword(s):  
Stereotactic Biopsy ◽  
Brain Lesion ◽  
Three Dimensional ◽  
The Body ◽  
Medical Sciences ◽  
Tertiary Centre ◽  
Pathological Evaluation ◽  
Long Time ◽  
Small Targets ◽  
Three Dimensional Coordinate

Background  Stereotactic surgery or stereotaxy is a minimally invasive form of surgical intervention which makes use of a three-dimensional coordinate system to locate small targets inside the body and to perform on them some action such as ablation, biopsy, lesion, injection, stimulation, implantation, radiosurgery (SRS), etc. Though it was developed a long time ago as a useful adjunct to brain lesions evaluation, use in Nepal is quite recent. Materials and Methods The study included eight patients who underwent frame based stereotactic biopsy and pathological evaluation of specimen at National Academy of Medical Sciences (NAMS). Results Out of eight patients the results were positive in seven patient and negative in one patient. Conclusions  The basic advantages of stereotaxy were realized in our cases with minimal morbidity and no mortality. Craniotomy for biopsy could be avoided.  

Sign in / Sign up

Export Citation Format

Share Document