Cyclic changes in the thyroid and interrenal glands of the urodele amphibian, Taricha torosa (Triturus torosus)

1955 ◽  
Vol 122 (1) ◽  
pp. 79-103 ◽  
Author(s):  
Malcolm R. Miller ◽  
Marilyn E. Robbins
Keyword(s):  
Taricha Torosa ◽  
Cyclic Changes

HISTOMORPHOLOGICAL CHANGES IN THE BRAIN IN RELATION TO OVARIAN CYCLE OF FRESHWATER CRAB, BARYTELPHUSA CUNICULARIS

2017 ◽  
Vol 23 (1) ◽  
Author(s):  
C.A. JAWALE
Keyword(s):  
Staining Intensity ◽  
Neurosecretory Cells ◽  
Ovarian Cycle ◽  
Secretory Product ◽  
Freshwater Crab ◽  
Intensity Index ◽  
Cytoplasmic Material ◽  
Histomorphological Changes ◽  
Cyclic Changes ◽  
The Brain

Ovarian maturation by neurosecretory cells in the brain of freshwater crab, Barytelphusa cunicularis have been examined. The histological scrutiny of the brain of Barytelphusa cunicularis related with three types (A, B and C) of neurosecretory cells, which are classified on the basis of size, shape and tinctorial characters. All these types of cells marked annual cyclic changes of cytoplasmic material in association with ovarian cycle. The activity of these cells has been correlated with the ovarian cycle. They are distinguishable by their size, nature locations, shape, nucleus position, cell measure and the secretory product in the cytoplasm. The result indicates that the neurosecretory A, B and C cells of the brain seen involved in the process of mating ovulation. The neurosecretory materials staining intensity index of these cells is described.

Effects of Solar UV-B Radiation on Embryonic Development in Hyla cadaverina, Hyla regilla, and Taricha torosa

1998 ◽  
Vol 12 (3) ◽  
pp. 646-653 ◽  
Author(s):  
Christopher R. Anzalone ◽  
Lee B. Kats ◽  
Malcolm S. Gordon
Keyword(s):  
Embryonic Development ◽  
Hyla Regilla ◽  
Taricha Torosa ◽  
Solar Uv

scholarly journals Global Economy Crisis and its Impact on Operational Container Carrier’s Strategy

2018 ◽  
Vol 30 (2) ◽  
pp. 187-194
Author(s):  
Vladimir Jerebić ◽  
Stanislav Pavlin
Keyword(s):  
Problem Solving ◽  
Global Economy ◽  
Management Strategies ◽  
Business Environment ◽  
Market Potential ◽  
Container Shipping ◽  
Freight Rates ◽  
New Business ◽  
Cyclic Changes ◽  
Economic And Financial Crisis

The shipping market is an economic derivative of global production and trade, being precariously subject of their cyclic changes, depressions and expansions. This paper analyses the condition of global container shipping market, caused by long-lasting economic and financial crisis that begun in 2008, but is still much visible within the container industry, particularly through overcapacity and low freight rates. It also deals with major changes of maritime container carrier’s management strategies, development and application of advanced transportation, technological, technical, economical, organizational and commercial measures in order to adapt and cope with new business environment. Finally, an attempt is made to forecast the market, potential difficulties and to propose problem-solving measures.

Transient Response of Polymer Electrolyte Membrane Fuel Cell to Variations in Operating Parameters

2013 ◽  
Author(s):  
A. Verma ◽  
R. Pitchumani
Keyword(s):  
Fuel Cell ◽  
Transient Response ◽  
Single Channel ◽  
Rapid Change ◽  
Transient Behavior ◽  
Pem Fuel Cells ◽  
Proton Exchange ◽  
Operating Parameters ◽  
Complex Species ◽  
Cyclic Changes

Due to rapid change in loads during automotive applications, study of dynamic behavior of proton exchange membrane (PEM) fuel cells is of paramount importance for their successful deployment in mobile applications. Toward understanding the effects of changes in operating parameters on the transient behavior, this paper presents numerical simulations for a single channel PEM fuel cell undergoing cyclic changes in operating parameters. The objective is to elucidate the complex interaction between power response and complex species (water, hydrogen and oxygen) transport dynamics for applied cyclic changes. This study focuses on studying the transient response of fuel cell for specified changes in operating parameters — voltage, pressure and stoichiometry at the cathode and the anode. Numerical studies are carried out on single-channel PEMFC’s to illustrate the response of power as the operating parameters are subjected to specified changes. The operating parameters are further optimized using a one dimensional physics based model with an objective to match the power requirements of a drive cycle over a defined period of time.

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