Natural frame

This paper aims to analyze the free and forced vibrations of the twostorey building frame with cracks. The two-storey frame system with cracks is modelled when many constituent parameters existed such as crack depth, crack location, flexural stiffness and elastic force which were involved by a nonlinear function.

8p viironman 02-06-2023 8 2   Download

The dynamic analysis is a necessity in the design, manufacturing and maintenance of structures. The analytic solutions are not available for most practical cases and the Finite Element Method (FEM) is not reliable due to the joint problem, unclear loading, material properties and numerical error. In this paper, we present a way to find modes shape of 3D Frame by FEM program using Matlab.

8p vidoctorstrange 06-05-2023 4 2   Download

This research examines how parametric loudspeakers may be considered unique acousmatic musical instruments; how the parametric acoustic array (PAA) can potentially make new forms of music and listening experiences; and how PAA-design problems can be overcome. Interdisciplinary in nature, the study uses grounded theory and experimental music practice within a design research methodology. Theory emerges from data, in concert with analysis and framing that draws on areas such as electroacoustic music, spatial composition, acoustics, PAA science/theory, modulation theory, and medium theory.

177p runthenight04 02-02-2023 2 2   Download

The hepatitis E virus (HEV) is the causative pathogen of hepatitis E, a global public health concern. HEV comprises 8 genotypes with a wide host range and geographic distribution. This study aims to determine the genetic factors influencing the molecular adaptive changes of HEV open reading frames (ORFs) and estimate the HEV origin and evolutionary history.

16p viansan2711 30-07-2021 16 1   Download

This study develops a probabilistic data-driven approach using the Multiple Layer Perceptron network coupled with the Dropout mechanism to perform the pushover analysis of reinforced concrete (RC) frame structures, predicting base shear, lateral displacement, as well as their relationship between the two formers. Moreover, corresponding confidence intervals of predicted values are also available owing to the probabilistic nature of the method, thus helping engineers design conservative solutions.

11p chauchaungayxua12 09-07-2021 19 2   Download

In this paper, dynamic stiffness model of a cracked frame structure that represents a planar tower crane is established in an explicit form based on general solution of cracked 2Dbeam element vibration. The crack is modeled by a pair of equivalent springs of stiffness calculated from the crack depth. An explicit form of frequency equation is first established and then solved for numerical sensitivity analysis of natural frequencies of the structure to cracks. An experimental study is accomplished to validate the theoretical development.

13p cothumenhmong9 04-01-2021 14 1   Download

Water retention ability of leave tissues of twenty five local upland rice cultivars (Oryza Sativa L.) was defined through the amount of water loss through different time frames. The results showed that the amount of water loss of leaf tissues of twenty five local upland rice cultivars through times: one hour, two hours, three hours, four hours, five hours and six hours had increased.

8p larachdumlanat127 20-12-2020 8 1   Download

"Ebook Steel design guide series 11: Floor vibrations due to human activity" present acceptance criteria for human comfort; natural frequency of steel framed; design for walking excitation; design for rhythmic excitation; design for sensitive equipment; evaluation of vibration problems and remedial measures.

0p hoangvietq2000 08-12-2020 7 0   Download

Trichoderma spp. are tolerant and compatible with fungicides, biofertilizers and other bio pesticides. Integrating fungicide resistant antagonists with suitable fungicide treatment has importance in the frame work of integrated disease management. Incorporation of natural products provides a viable solution to the environmental problems caused by synthetic pesticides. Identification of these compounds and their further testing may be an effective approach to minimize the use of hazardous chemicals

5p trinhthamhodang1216 19-11-2020 10 1   Download

Upon completion of this lesson, the successful participant will be able to: Recognize your natural leadership frame of reference and how you can expand your perspective, use power and politics to help accomplish important organizational goals, identify types and sources of power in organizations and know how to increase power through political activity,...

15p koxih_kothogmih2 20-08-2020 29 3   Download

An experiment was framed to study the variability, nature of gene action and number of genes controlling the characters in bacterial blight and blast resistance genes introgressed three backcross population in rice. Mean variation was high for number of grains and plant height for all the crosses. The characters like plant height, number of productive tillers and number of grains were showed complementary gene interaction for all back cross population. While for thousand grain weight and single plant yield were explained complementary gene interactions in two backcross populations.

4p nguaconbaynhay6 24-06-2020 19 0   Download

Biopesticides have attracted attention in pest management in recent decades, and have long been promoted as prospective alternatives to synthetic pesticides. Biopesticides are natural and good alternative sources of synthetic pesticides. In India, all pesticides, including biopesticides, are regulated under the Insecticides Act, 1968, and the rules framed under it. The act regulates the import, manufacture, transport, sale, distribution, and use of pesticides with a view to prevent any risk to human beings and animals.

5p gaocaolon5 14-06-2020 12 2   Download

Present study discussed spatial pattern techniques with respect to plant pathogens. Study was framed under four segments related with (a) basics of spatial pattern analytical tools and ideal strategies for their detection, (b) overview of certain techniques largely being utilized for different host-pathogens, (c) multivariate analysis to identify patterns for use of various spatial indices and finally (d) identification of gaps relate with spatial pattern analysis of pathogens.

28p caygaocaolon5 27-05-2020 15 0   Download

Genetic variability and diversity play a major role in framing successful breeding programme. It is evident that genetically diverse parents are likely to produce high heterotic effects and yield desirable transgressive segregants. Keeping this in view, the present study was conducted to evaluate nature and extent of genetic variability and diversity in Indian mustard [Brassica juncea (L.) Czern. & Coss.].

13p trinhthamhodang5 16-05-2020 13 2   Download

The main aim of this review study was to know the effects by aflatoxin of mycotoxin fungal diseases for the health hazards of silkworm Bombyx mori and series of events that led to the discovery of aflatoxin as a potent carcinogen. Aflatoxins B1, B2, G1 & G2 may be referred as the toxic and produced by the Aspergillus fungal diseases, among all the Aflatoxins, B1 and G1 are highly toxic to the silkworm, which is carcinogenic in nature and can be occurred immediately higher incidence in bivoltine silkworms than in multivoltine and cross breed.

10p nguaconbaynhay1 04-12-2019 20 0   Download

The main objectives of this article is to explore how people use folklore for interaction, and how folklore is useful for managing social/cultural situations for identity making. Pedestal on qualitative secondary data were obtained from various literature, books, journals and articles.

12p nguathienthan1 27-11-2019 21 0   Download

Chapter 13 - How populations evolve. This chapter presents the following content: A sea voyage helped Darwin frame his theory of evolution, Darwin proposed natural selection as the mechanism of evolution, scientists can observe natural selection in action,...

136p shiwo_ding2 03-04-2019 11 1   Download

Three genes encoding chitinase A (chiA), B (chiB), and C (chiC) were amplified from a bacterium that was isolated from a naturally dead Helicoverpa armigera larva and identified as Serratia marcescens based on 16S rRNA gene sequence analysis (KF823633 accession number).

16p vikimsa 22-02-2019 19 1   Download

The purpose of the present paper is to study, using the Tachibana operator, the complete lifts of affinor structures along a pure cross-section of the tensor bundle and to investigate their transfers. The results obtained are to some extent similar to results previously established for tangent (cotangent) bundles.

11p tuongvidanh 06-01-2019 21 2   Download

This paper presents a displacement - based finite element formulation for nonlinear analysis of steel - concrete composite planar frames subjected to combined action of gravity and lateral loads. A 6DOF super element is proposed for modelling composite beam, allowing for partial interaction between the steel beam and the concrete slab, semi - rigid nature of beam to column composite connection and material nonlinearity.

14p thienthanquydu 17-10-2018 40 0   Download