Design of single plate framing connections

Thesis (M.S.)--University of Oklahoma, 1992.Includes bibliographical references (leaves 144-145)The single plate framing connection is one of the simplest and most economical beam to column or beam to girder connections. The connection is comprised of a single plate, with either prepunched or predrilled bolt holes that is shop welded to the supporting element. During erection, the beam with prepunched holes is brought into position and field bolted to the framing plate. The behavior of such a connection is rather complex, and involves the specification of numerous parameters for its design. Different procedures regarding the behavior and design of this connection have been suggested by different researchers, which give different values of the design parameters. In order to arrive at a common and rational procedure to characterize the behavior and design of this connection, full scale beam tests on 2-, 4- and 6-bolt connections have been conducted in this study. The beam tests were further supplemented by a series of single bolt lap tests followed by tensile coupon tests to investigate the effect of certain key parameters on the connection ductility. The test results are used to characterize the actual behavior of single plate framing connections. This is followed by the development of a design procedure for such a connection

INFLUENCE OF ORGANIC MANURES ON PRODUCTIVITY OF TWO VARIETIES OF RICE

Field experiment was conducted during 2003-04 to study the effect of vermicompost, farmyard manure and water hyacinth compost in comparison to chemically fertilized and unfertilized plots on crop-plants in HYV Swarna and local variety Magaisal. The experiment followed split plot design with two varieties of rice in the main plots and five nutrient sources randomized in sub plots. Signifi cant variation in grain yield between the varieties, among the nutrient sources and their interactions was observed. Grain yield recorded in HYV Swarna was higher to local variety Mugaisal irrespective of the treatments and hence Swarna was considered to be more tolerant to Mugaisal. Among the nutrient sources, treatment with vermicompost imparted maximum grain yield to all other nutrient sources irrespective of varieties

Decomposition Methods and the Computation of Spatial Equilibria: An Application to Coal Supply and Demand Models

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Introductory Review of Swarm Intelligence Techniques

With the rapid upliftment of technology, there has emerged a dire need to fine-tune or optimize certain processes, software, models or structures, with utmost accuracy and efficiency. Optimization algorithms are preferred over other methods of optimization through experimentation or simulation, for their generic problem-solving abilities and promising efficacy with the least human intervention. In recent times, the inducement of natural phenomena into algorithm design has immensely triggered the efficiency of optimization process for even complex multi-dimensional, non-continuous, non-differentiable and noisy problem search spaces. This chapter deals with the Swarm intelligence (SI) based algorithms or Swarm Optimization Algorithms, which are a subset of the greater Nature Inspired Optimization Algorithms (NIOAs). Swarm intelligence involves the collective study of individuals and their mutual interactions leading to intelligent behavior of the swarm. The chapter presents various population-based SI algorithms, their fundamental structures along with their mathematical models.Comment: Submitted to Springe

INFLUENCE OF ORGANIC MANURES ON PRODUCTIVITY OF TWO VARIETIES OF RICE

Field experiment was conducted during 2003-04 to study the effect of vermicompost, farmyard manure and water hyacinth compost in comparison to chemically fertilized and unfertilized plots on crop-plants in HYV Swarna and local variety Magaisal. The experiment followed split plot design with two varieties of rice in the main plots and five nutrient sources randomized in sub plots. Signifi cant variation in grain yield between the varieties, among the nutrient sources and their interactions was observed. Grain yield recorded in HYV Swarna was higher to local variety Mugaisal irrespective of the treatments and hence Swarna was considered to be more tolerant to Mugaisal. Among the nutrient sources, treatment with vermicompost imparted maximum grain yield to all other nutrient sources irrespective of varieties

PRINCIPAL COMPONENT ANALYSIS OF MORPHOLOGICAL TRAITS OF HARINGHATA BLACK CHICKENS IN AN ORGANIZED FARM

The present study was conducted to explore the relationship among body measurement in Haringhata Black Chicken using principal component analysis keeping in view of identifying those components that define body conformation in this breed. The parameters body weight, breast girth, keel length, body length, ornithological measurement, beak length, beak width and back length were recorded and evaluated on 22nd week of age of 113 Chicken. The data showed that the mean body weight was 963 gm and the body measurements were 23.96 cm, 9.80 cm, 59.27 cm, 51.14 cm, 2.38 cm, 1.40 cm and 9.79 cm for breast girth, keel length, body length, ornithological measurement, beak length, beak width and back length at 22nd week of age, respectively. The highest correlation was obtained between body weight and body length (r = 0.86), body length and ornithological measurement (r = 0.86) while correlation between beak width and ornithological measurement (r = 0.26) was observed to be the lowest. Extracted two principal components PC 1 and PC 2 explained 75.70 % of the total variation in the original variables. The first principal component (PC 1) had the largest share (60.02 %) of the total variance and had high positive loadings on body weight (0.93), body length (0.89), ornithological measurement (0.88), breast girth (0.86) and keel length (0.85) while PC 2 shared only 15.68% of the total variance with high positive loadings on beak width (0.75) and beak length (0.68). Therefore, PC1 may be used as selection criteria for improving body weight of indigenous Haringhata Black chicken

Understanding photothermal interactions will help expand production range and increase genetic diversity of lentil (Lens culinaris Medik.)

Lentil is a staple in many diets around the world and growing in popularity as a quick-cooking, nutritious, plant-based source of protein in the human diet. Lentil varieties are usually grown close to where they were bred. Future climate change scenarios will result in increased temperatures and shifts in lentil crop production areas, necessitating expanded breeding efforts. We show how we can use a daylength and temperature model to identify varieties most likely to succeed in these new environments, expand genetic diversity, and give plant breeders additional knowledge and tools to help mitigate these changes for lentil producers.This research was conducted as part of the ‘Application of Genomics to Innovation in the Lentil Economy (AGILE)' project funded by Genome Canada and managed by Genome Prairie. We are grateful for the matching financial support from the Saskatchewan Pulse Growers, Western Grains Research Foundation, the Government of Saskatchewan, and the University of Saskatchewan. We acknowledge the support from our international partners: University of Basilicata (UNIBAS) in Italy; Institute for Sustainable Agriculture (IAS) in Spain; Center for Agriculture Research in the Dry Areas (ICARDA) in Morocco, India and Bangladesh; Local Initiatives for Biodiversity, Research and Development (LI-BIRD) in Nepal; and United States Department of Agriculture (USDA CRIS Project 5348-21000-017-00D) in the USA, for conducting field experiments in their respective countries

Marine Biocatalysts: Enzymatic Features and Applications

In several recent reports related to biocatalysis the enormous pool of biodiversity found in marine ecosystems is considered a profitable natural reservoir for acquiring an inventory of useful biocatalysts. These enzymes are characterized by well-known habitat-related features such as salt tolerance, hyperthermostability, barophilicity and cold adaptivity. In addition, their novel chemical and stereochemical characteristics increase the interest of biocatalysis practitioners both in academia and research industry. In this review, starting from the analysis of these featuring habitat-related properties, important examples of marine enzymes in biocatalysis will be reported. Completion of this report is devoted to the analysis of novel chemical and stereochemical biodiversity offered by marine biocatalysts with particular emphasis on current or potential applications of these enzymes in chemical and pharmaceutical fields. The analysis of literature cited here and the many published patent applications concerning the use of marine enzymes supports the view that these biocatalysts are just waiting to be discovered, reflecting the importance of the marine environment. The potential of this habitat should be thoroughly explored and possibly the way to access useful biocatalysts should avoid destructive large-scale collections of marine biomass for enzyme production. These two aspects are day by day increasing in interest and a future increase in the use of marine enzymes in biocatalysis should be expected