scholarly journals The Shape-Structure Relation For The Light Construction Membrane Type

2015 ◽  
Vol 5 (2) ◽  
pp. 43-50
Author(s):  
L. Kopenetz ◽  
A. Cătărig ◽  
Mihaela Teodora Ghemiş

Abstract In the case of light structures membrane type the form is confused with the structure and vice versa. Thus the analysis process, non-linear type, the one for form finding is also a means of optimizing these structures. To respect the natural principle of minimum it is advisable that the structure’s shape is similar to the minimum surface area. The numerical problem solving is based on using finite elements with constant strain of soap film. Based on these considerations, the paper presents aspects of determining the shape of the membrane structure using finite elements of soap film.

Author(s):  
Anupam Soni ◽  
Sharad Mishra ◽  
A.K. Santra ◽  
V.N. Khune ◽  
Nishma Singh ◽  
...  

Background: The linear type traits are the one of important tools for selection of milch cattle. The lifespan of cattle mostly depends on these linear type traits particularly feet and udder related traits. So it is necessary to measure the linear type traits and effect on longevity of Sahiwal cattle. Methods: The experiment was conducted on 86 Sahiwal cattle maintained in Bull mother experimental farm and government cattle breeding farm, Anjora, Durg (C.G.). The linear type traits in Sahiwal cattle were measured as per the recommendation of International committee for animal recording (ICAR). Result: The different linear type traits were studied the average value of stature 125.39±0.534, Chest width 27±0.49, rump angle 12.75±0.97, rump width 17.32±0.29, rear leg set (side view) 146.03°±0.91, rear leg set (rear view) -3.74±0.15, udder depth 18.97±0.43, udder cleft 2.77±0.95, rear udder height 24.06±0.45, fore udder attachment 130.50±1.75° and front teat position 3.61±0.13 cm. these linear type traits mainly affects the longevity and survivability of Sahiwal herds. The most of the traits were found to be intermediate type it leads to increase the longevity and fewer reproductive problems in the Sahiwal herds.


2008 ◽  
Vol 57 (7) ◽  
pp. 1131-1135 ◽  
Author(s):  
K. Boussu ◽  
G. Van Baelen ◽  
W. Colen ◽  
D. Eelen ◽  
S. Vanassche ◽  
...  

In the carwash industry, water recycling is necessary to be in accordance with present and upcoming environmental laws. As this is not possible with traditional techniques, membrane processes (like ultrafiltration (UF) and nanofiltration (NF)) are technically and economically evaluated in this study. Concerning the technical part, there needs to be a compromise between a high permeate permeability on the one hand and a high permeate purity on the other hand. Depending on the use of the purified wastewater, ultrafiltration (to recycle wastewater in the main wash cycle) or nanofiltration (to recycle wastewater in the rinsing step) would be the optimal choice. Concerning the financial part, the implementation of membrane processes in the wastewater purification installation is economically feasible, especially when expensive tap water is used as pure water. These positive evaluations imply that membrane processes can be useful to recycle wastewater in the carwash industry, on condition that the right membrane type (with the least membrane fouling) and the right process format (e.g., hybrid process of UF and/or NF with a biological treatment) is selected.


Author(s):  
Rakesh K. Kapania ◽  
Sungho Park

Abstract The bilinear formulation proposed earlier by Peters and Izadpanah to develop finite elements in time to solve undamped linear systems, is extended (and found to be readily amenable) to develop time finite elements to obtain transient responses of both linear and nonlinear, and damped and undamped systems. The formulation is used in the h-, p- and hp-versions. The resulting linear and nonlinear algebraic equations are differentiated to obtain the sensitivity of the transient response with respect to various design parameters. The present developments were tested on a series of linear and nonlinear examples and were found to yield, when compared with results obtained using other methods, excellent results for both the transient response and its sensitivity to system parameters. Mostly, the results were obtained using the Legendre polynomials as basis functions, though, in some cases other orthogonal polynomials namely, the Hermite, the Chebyshev, and integrated Legendre polynomials were also employed (but to no great advantage). A key advantage of the time finite element method, and the one often overlooked in its past applications, is the ease in which the sensitivity of the transient response with respect to various system parameters can be obtained.


Author(s):  
Adam Cywinski

The article evaluates the functional stability in the eye and the method of intrascleral fixation of spherical or toric, monofocal, intraocular Carlevale lens by Soleko. This procedure was performed in patients requiring correction of aphakia. Haptics of the one-piece lens, due to the T-shape structure are fixed intrasclerally and thus do not require additional fixation sutures. Intrascleral fixation was performed in 14 eyes, in 13 patients, between 2017 and 2019. In one case, a corneal astigmatism correction model (Carlevale toric) was used. Good visual quality and full intraocular stabilization were obtained. Except for transient vitreous haemorrhage, cormeal edema and elevated intraocular pressure, no adverse effects were observed, including intraocular displacement, subluxation or rotation of the lens relative to the axis. The normal and stable position of the leens was also obtained in the eyes with accompanying nystagmus.


2018 ◽  
Vol 16 (2) ◽  
pp. 91-103
Author(s):  
Christoph Gengnagel ◽  
Riccardo La Magna ◽  
Mette Ramsgaard Thomsen ◽  
Martin Tamke

Form-finding processes are an integral part of structural design. Because of their limitations, the classic approaches to finding a form – such as hanging models and the soap-film analogy – play only a minor role. The various possibilities of digital experimentation in the context of structural optimisation create new options for the designer generating forms, while enabling control over a wide variety of parameters. A complete mapping of the mechanical properties of a structure in a continuum mechanics model is possible but so are simplified modelling strategies which take into account only the most important properties of the structure, such as iteratively approximating to a solution via representations of kinematic states. Form finding is thus an extremely complex process, determined both by the freely selected parameters and by design decisions.


2021 ◽  
Vol 24 (24) ◽  
pp. 37-53
Author(s):  
Lysychka Oleksandr

Statement of the problem. The relevance of the article lies in revealing the peculiarities of the composer’s way of appeal to the national cultural heritage. The aim of the study is to determine the principles of embodiment of “the nationally English” in the symphonic etude “Falstaff” by Edward Elgar. The main method of the research is drawing parallels, on the one hand, and between the embodiment of the English national character through the image of Falstaff in musical and dramatic works, on the other. Research results. A conclusion is made that the main factor creating strong ties between the “symphonic etude” and the national tradition is spectacular national characterisation. Moreover, for the sake of applying the “English” the composer consciously and significantly changes his musical language. The author turns to very detailed programme (unlike general type of programness in most of his works), and that allows him to scrupulously depict the plot of Shakespeare’s chronicle on which he focuses on. Elgar also portrays overtly humoristic situations, for the first time in his symphonic works, because it would be impossible to disregard this side of Falstaff’s character, as it is the contrast of comical in the beginning and solemn in the denouement that create the tragic effect. The structural side of the composition is also unprecedented as it is formally has one movement, but the composer himself divides it in four parts (ignoring the arrangement of events in “Henry IV” in two parts) while all the parts are connected in various ways. As a result of this, “Falstaff” becomes the longest single-movement symphonic composition of Elgar. The composer favours linear type of musical thinking, integrating it with sudden “flashes” of thematically significant elements in different strata of the texture, and this all combined provides completely lush, unpredictable sonority of the orchestra. On the top of this, the author extensively uses themes with obvious genre genesis, especially in order to depict Shallow’s Gardens, although it is possible to find more traditional for Elgar passages with generalised type of intonation. Such characteristic for Elgar principles, as multi-thematism and elusion of the tonal centralisation (while using quite traditional chords in every given moment) find their new meaning regarding illustrative role of the music. A conclusion is made that the “Britishness” of the symphonic etude lies not in the use of folk intonations or allusions to the past of professional music, but in meticulous attention to W. Shakespeare’s text: both on levels of portraying or interaction between the “characters” and form-creating according to the scenes. Despite the fact that E. Elgar’s musical language seems to be quite distant from Falstaff’s comical essence, the composer was able to find means adequate to the character’s image, such as “wandering” tonal structure; superficial, but rather important analogy between quite large scale of a single-movement work and Falstaff’s body image; narrative orchestration.


2020 ◽  
Vol 11 (2) ◽  
pp. 293-304
Author(s):  
Dyah Nurul Azizah

An-Nur in the Qur’an is a familiar word. It was mentioned in many verses withdifferent context. An-Nur in each verse has a different meaning, then need to adeep understanding. The purpose of this study is to know the real meaning fromAn-Nur in the Qur’an use a semantic theory. Semantic of Al-Qur’an is an attemptto reveal the world view of Qur’an on some terms and vocabularies in Qur’anthrough a semantic analysis. The analysis process begins from research a basicmeaning and contextual meaning of An-Nur with some verses. The conclusions ofthis study is that the word Án-Nur in the Qur’an has three categories; 1) An-Nuras something to fight digression, 2) An-Nur as the religion from God, and 3) Godas An-Nur or the Highest Level of An-Nur. The word An-Nur in the Qu’an isalways mentioned in singular form, while the darkness (opposite) is alwaysmentioned in plural form. That shows there are many dark or bad things, such asa various kinds of immorality, but it will be defeated with the one of the light (An-Nur). God as the Highest Light, Eternal, True, and Everything


2021 ◽  
Vol 16 (4) ◽  
pp. 303-311
Author(s):  
Iemelianova S.M. ◽  
Vynokurov D.S.

The article describes the role and prospects of using modern phytosociological databases for complex geobotanical researches. Based on the analysis of foreign and national experience in creating such information resources, the need for their development and standardization by forming a national infrastructure for the input, accumulation, and storage of phytosociological data of Ukraine is substantiated. Such infrastructure provides the development and implementation of unified technical protocols and normative-methodical rules of digitalization, compilation, management, and the use of phytosociological data for complex meta-analyses. Within the one software technical protocols should combine a single taxonomic list to enter data about the species composition of phytocoenoses, as well as a unified form of header data to add other information on plant communities. Based on the analysis of the existing floristic lists used by Ukrainian phytosociologists, the need to create a new most complete species list with current taxonomic data, which will be periodically updated, is provided. Such a list should unite all taxa of vascular plants and cryptogams known from the territory of Ukraine, be as complete and correct as possible. A standard metadata structure has been developed to enter information on the vertical and horizontal structure of phytocoenoses, ecological and physical-geographical conditions, sozological value, as well as habitat and syntaxonomic affiliation of each geobotanical relevé. A communication system is proposed to obtain phytosociological information necessary for specific research, as well as possible forms of control over the move and use of information protected by copyright. Forms of access to data, mechanisms for obtaining them, and a list of rules for regulating compliance with copyright and scientific ethics in the use of data in the analysis process have been developed. Keywords: data bases, phytosociology, vegetation, Ukraine


2008 ◽  
Vol 1079 ◽  
Author(s):  
Yoshihiro Hayashi

ABSTRACTLow-k materials in advanced interconnect modules are required not only to lower the parasitic capacitances, but also to have mechanical stability with damage-less interfaces. By plasma-polymerization (PP) process using ring-type siloxane precursor, a new self-organized porous SiOCH film is developed with preserving the original hexagonal silica-backbone structure, thus so called as a molecular-pore-stack (MPS) SiOCH film. The hydrocarbon-rich MPS film has high endurance to the process damages. A density-modulated MPS film is obtained with reinforced interfaces by plasma co-polymerization (PcP) process using not only the ring-type but also linear-type siloxane. Furthermore, an ultimate full low-k module with low-k silica-amorphous-carbon composite (SACC) cap, instead of high-k SiCN, is also obtained simply by the one-step deposition scheme. The modulated PcP process and the sophisticated molecular design of the precursor siloxane provides scaled-down interconnect modules with good mechanical strength and excellent dielectric reliability at a low manufacturing cost, applicable for 45/32/22nm-nodes ULSIs.


2015 ◽  
Vol 8 (4) ◽  
pp. 491-506
Author(s):  
J. A. DE CARVALHO NETO ◽  
L. A. C. M. VELOSO

AbstractThe knowledge on the active moving load of a bridge is crucial for the achievement of the information on the behavior of the structure, and thus foresee maintenance, repairs and better definition of the logistics of its active vehicles. This paper presents the development of the algorithms for the application of the Bridge-Weigh In Motion (B-WIM) method created by Moses for the weighing of trains during motion and also for the characterization of the rail traffic, allowing the obtainment of information like passage's train velocity and number and spacing of axles, eliminating the dynamic effect. There were implemented algorithms for the determination of the data referring to the geometry of the train and its loads, which were evaluated using a theoretical example, in which it was simulated the passage of the train over a bridge and the loads of its axles were determined with one hundred percent of precision. In addition, it was made a numerical example in finite elements of a reinforced concrete viaduct from the Carajás' Railroad, in which the developed system reached great results on the characterization and weighing of the locomotive when the constitutive equation of the Brazilian Standards was substituted by the one proposed by Collins and Mitchell.


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