The Effect of Surfactant Polymer Concentration on the Distribution of Oil Drainage Area in Heterogeneous Reservoir

The use of chemical injection has been widely used in the oil field on a large scale. One of the enhanced oil recovery (EOR) methods to increase production from old oil fields is through polymer surfactant injection, which functions to reduce interfacial tension and water-oil mobility ratio. This study focuses on developing a simulation model for chemical injection of polymer surfactant reservoirs by hypothetically making heterogeneous reservoir models in each layer with dimensions of 10x10x4. It consists of one a vertical well which is producer well located at the top of the left corner and one an injection well which is located at the bottom of right corner. This study shows a comparison between surfactant injection, polymer injection and SP injection using the same surfactant and polymer concentration with a concentration of 1000 ppm with 0.3 PV. Oil recovery in polymer injection turned out to be quite high compared to other chemical injections. In polymer injection, the oil recovery was 4.17%. Meanwhile, surfactant injection and SP injection increased by 0.59% and 0.61, respectively.

Etika Islam dalam Naskah Petikan Qur'an Katut Adab Padikana Karya H. Hasan Mustapa

This research is entitled Islamic Ethics in the Petikan Qur'an Katut Adab Padikana by H. Hasan Mustapa, a Sundanese manuscript made in 1920 AD. Good relationship between being and God as well as among fellow beings themselves. The purpose of this research is to reveal the verses that show a good relationship between a being and God as well as between the creatures themselves, and to reveal the metaphoric verses in the manuscript. This research method uses the qualitative methods, which seeks to collect data, process and analyze it qualitatively. While the approach used is the Maudu'i interpretation and semiotic theory. Petikan Qur’an Katut Adab Padikana were printed by the Mendakna Committee in 1937 AD after Hasan Mustapa asked for three years before he died to be copied. There are 115 articles consisting of 57 Surah of 356 paragraphs. Starting from the Surah al-Baqarah, to Al-Nass, the explanation uses the van Ophuysena spelling (1907-1947) and the writing process starts from the left corner, namely the verses of the Qur'an then the right corner of the writing of the verses of the al-Qur'an is in the language Latin, and after that the content of the meaning of the verse is explained by using the Sundanese language so that it is easily understood by the people of the Sundanese area.

Fillings of skew shapes avoiding diagonal patterns

A skew shape is the difference of two top-left justified Ferrers shapes sharing the same top-left corner. We study integer fillings of skew shapes. As our first main result, we show that for a specific hereditary class of skew shapes, which we call D-free shapes, the fillings that avoid a north-east chain of size $k$ are in bijection with fillings that avoid a south-east chain of the same size. Since Ferrers shapes are a subclass of D-free shapes, this result can be seen as a generalization of previous analogous results for Ferrers shapes. As our second main result, we construct a bijection between 01-fillings of an arbitrary skew shape that avoid a south-east chain of size 2, and the 01-fillings of the same shape that simultaneously avoid a north-east chain of size 2 and a particular non-square subfilling. This generalizes a previous result for transversal fillings. Comment: 23 pages, 14 figures; formatting changes for publication in DMTCS, no changes in content

APPLICATION OF AUGMENTED REALITY TOOLS TO THE DESIGN PREPARATION OF PRODUCTION

The paper describes the application of augmented reality tools to create an auxiliary interactive tool in the field of design. To mediate it, an application with AR operation based on marker tracking has been designed. The created application works with the mobile devices platform. Two types of markers have been used in the application. To display basic information, buttons with functions are added to the scene, such as part information, rotation and change of position in the X, Y, Z direction. The application runs on a mobile phone, with a built-in camera. The marker is displayed in the drawing's lower left corner. The model is positioned so that it appears above the view of the part in the drawing. The task of the application is to support intelligent tools applicable in the design stage of production preparation, in the creation of drawing documentation.

Dynamics of a neutrally buoyant circular particle moving in a parallel double-lid-driven square cavity

The motion of a neutrally buoyant circular particle in a parallel double-lid-driven square cavity is studied with the lattice Boltzmann method. To understand, predict and control the motion of the circular particle, the effects of the initial position and particle size are studied. If the circular particle is placed at the centerline of the square cavity, at the steady state, it is confined at the bottom left corner, otherwise, the circular particle is stabilized at the 8-like trajectory, which is created by both the inertia of the circular particle and the confinement of the boundaries of the square cavity. The effect of the particle size on the motion of the circular particle is obvious, with the increase of the particle size, the confinement of the boundaries of the square cavity becomes stronger, and the 8-like trajectory shrinks toward the center. Furthermore, if the particle size is large enough, the centrifugal motion of the circular particle becomes weaker, and the circular particle cannot cross the centerline of the square cavity.

Ventilation of Square Cavity Containing a Heat Source

A numerical simulation of turbulent mixed convection of a ventilated cavity containing a heat source placed of the center has been carried out. This cavity is outfitted along couple holes: one placed within the lower left corner and the other in the top right corner. The width of the hole "H" represents is 1/5 of the length of the cavity side. The diameter regarding the round heat source "D" is equal in accordance with the breadth of the inlet gap’s H (D = H). The walls of the cavity considered are maintained adiabatic, while the temperature of the heat source T is higher than the ambient temperature. The turbulence model k-ε was used for governing equations of turbulent mixed convection inside the cavity. The finite volume method was used for numerical resolution. The parameters of flow are: the Grashof number is set to Gr = 109 and the Reynolds number (Re) varies so that the number of Richardson (Ri) takes the values Ri = 0.01, 0.05, 0.1, 1, 2, 5, 10, 20 and 30 (Ri = Gr/ Re2). The effect of thermo-dynamic parameters and the shape geometric cavity effect are investigated.

Editorial. A new graphic profile for FormAkademisk

In recent years, we at FormAkademisk have taken a certain approach to changing our graphic profile. Now that we have also changed the article template, which is the last piece of a puzzle that Tore André Ringvold began when he started working for FormAkademisk in 2016. He is a trained industrial designer from England and has extensive experience with graphic design and marketing communication in the advertising industry. The work began with a new logo and a new cover image for each issue. The idea behind the new graphic profile was that it should better reflect both the role and function of the journal. We have strived for the logo to be classic in terms of form, and at the same time contemporary. Each year will have its own colour, and each issue will have its own design. In the current, new template, all articles will now contain a cover image in the left corner corresponding to the number to which the article belongs. This also helps to create wholeness in the ‘system’.

N.I. Kuskov. - The case of the absence of the left kidney in combination with a bifid uterus. - (Collected Works. Doctors of St. Petersburg. Maryinsky Hospital. Issue II, St. Petersburg., P. 80).

In the corpse of a consumptive woman, 46 years old, in place of the left kidney was only the adrenal gland of normal structure. The right kidney is enlarged, parenchymal inflamed. Heart is small, 230 grm. vѣsom. Two uterus, as if spliced ​​by their necks over a length of 2.3 cm. Does the stigma have only one hole? for the canal of the right uterus, and resembles the stigma of the giving birth uterus. The size of the right uterus is normal, its left corner is rounded. This uterus has one round ligament, one wide and solitary appendages. The fallopian tube comes from the left corner. A thin fold of the peritoneum goes from the back surface of this uterus to the rectum, the same fold goes from the left edge to the left uterus. The left uterus is smaller in size, with a narrow cavity. She has two round ligaments and one wide ligament. There are no appendages. Densely augmented with old connective tissue to the rectum.

Restaurarea unei picturi pe pânză de Aurél Náray (1883–1948)

"The restoration of a painted canvas by Aurél Náray (1883-1948) This study shows the restoration work made on the painted canvas of the Hungarian artist Aurél Náray (1883-1948), depicting an ecclesiastic subject (Saint Joseph with the infant Jesus). This oil painting comes from a private art collector and has the following dimensions: 42x57.5 cm, being sustained by a wooden stretcher. The painting is signed and dated by the artist himself on the lower left corner (“Aurél Náray 909”). The canvas is fixed on the underframe with metallic nails; as a result of the wood having dried, the frame shows slight distortions. The face of the painting displays small portions of missing white primer and/ or colour, erosions of the paint layer, two little punctures in the canvas, and a small area of distorted canvas placed toward the lower edge of the painting. Adherence of thin dirt can be observed on the surface of the painting while the back of the canvas bears heavy traces of dust and dirt, especially on its margins. The actual restoration process of the painted canvas referred to the following: drawing up the initial photograhic documentation, superficial dust cleaning on the back of the canvas, detachment of the painting from its old underframe and the building of a new and proper wooden stretcher. After the plainness of the painting was restored and the two small pricked points on the canvas were consolidated (with the use of Beva 371 adhesive), a strip lining on the margins of the canvas was carried out, in order to be able to fix the canvas on the new underframe. Cleaning of the surface came next, followed by the filling of the missing primer layer with putty. The chromatic integration of the painting was accomplished (after having sealed the original paint with a thin layer of intermediary varnish) with the use of low oil content colours and the final protection of a second satin varnish layer. Keywords: painted canvas, restoration, stretcher, strip lining, varnish "