Trapezoidal type

A new freshwater ostracod genus, Comalcandona gen. nov., and its type species (Comalcandona tressleri sp. nov.) are described from John Knox Ranch, Comal County, Texas, USA. The new genus differs from the related genera in the presence of the shallow pits on the trapezoidal shape of the carapace and presence of one well-developed anterior claw (posterior claw and both anterior and posterior setae are absent) on the uropod, a diagnostic character.

11p dolomite36 30-12-2021 6 0   Download

This study focuses on development of a high compact magnetorheological brake (MRB) for application in motorcycles. The proposed MRB consists of a rotor with multiple trapezoidal teeth mating with dual trapezoidal teeth on inner face of the housing. The teeth act at multiple magnetic poles of the brake. The gap between the mating teeth is filled with MR fluid.

8p viwendy2711 05-10-2021 17 1   Download

In this paper, we consider the inventory model for perishable items with quadratic trapezoidal type demand rate, that is, the demand rate is a piecewise quadratic function under constant deterioration rate. The model consider allows for shortages and the demand is partially backlogged.

14p toritori 11-05-2020 10 0   Download

In this paper, the Legendre spectral-collocation method was applied to obtain approximate solutions for some types of fractional optimal control problems (FOCPs). The fractional derivative was described in the Caputo sense. Two different approaches were presented, in the first approach, necessary optimality conditions in terms of the associated Hamiltonian were approximated. In the second approach, the state equation was discretized first using the trapezoidal rule for the numerical integration followed by the Rayleigh–Ritz method to evaluate both the state and control variables.

11p trinhthamhodang1 16-11-2019 18 0   Download

This paper investigates a Supply Chain System for deteriorating items in which a supplier supplies a manufacturer with raw material, and the manufacturer produces the finished goods. Demand rate is assumed to be time-sensitive in nature (Trapezoidal type), which allows three-phase variation in demand, and production rate is demand dependent. Our adoption of trapezoidal type demand reflects a real market demand for newly launched product.

18p vinguyentuongdanh 19-12-2018 31 0   Download

This note tries to provide a patch work for the paper of Chang Dye and Chuang. Their paper contains an important finding of smoothly connected property that can very dramatically simplify the solution procedure of many inventory models with ramp type demand and trapezoidal type demand. Our improvement will arouse attention of the researchers and help them apply their important findings in the pending research projects.

8p vinguyentuongdanh 19-12-2018 30 0   Download

Power Screws 1. Introduction. 2. Types of Screw Threads used for Power Screws. 3. Multiple Threads. 4. Torque Required to Raise Load by Square Threaded Screws. 5. Torque Required to Lower Load by Square Threaded Screws. 6. Efficiency of Square Threaded Screws. 7. Maximum Efficiency of Square Threaded Screws. 8. Efficiency vs. Helix Angle. 9. Overhauling and Selflocking Screws. 10. Efficiency of Self Locking Screws. 11. Coefficient of Friction. 12. Acme or Trapezoidal Threads. 13. Stresses in Power Screws. 14. Design of Screw Jack. 15. Differential and Compound Screws. Introduction 17.

53p tieutaithan 15-11-2010 73 8   Download

CONTENTS CONTENTS 624 C H A P T E R n A Textbook of Machine Design 17 Power Screws 1. Introduction. 2. Types of Screw Threads used for Power Screws. 3. Multiple Threads. 4. Torque Required to Raise Load by Square Threaded Screws. 5. Torque Required to Lower Load by Square Threaded Screws. 6. Efficiency of Square Threaded Screws. 7. Maximum Efficiency of Square Threaded Screws. 8. Efficiency vs. Helix Angle. 9. Overhauling and Selflocking Screws. 10. Efficiency of Self Locking Screws. 11. Coefficient of Friction. 12. Acme or Trapezoidal Threads. 13. Stresses in Power Screws. 14.

53p hadalabo 29-09-2010 105 24   Download