The conidia of Typhula incarnata. 2. Their function as spermatia

1988 ◽  
Vol 66 (7) ◽  
pp. 1321-1324 ◽  
Author(s):  
B. Metzler
Keyword(s):  
Wet Surface ◽  
Typhula Incarnata

The conidia of monokaryotic strains of Typhula incarnata Lasch ex Fr. failed to germinate. However, homing reactions in compatible mycelia were induced. The homing branches of hyphae often fused with conidia. As a result of dikaryon formation the production of clamp connections took place. These characteristics, their “wet” surface, and their minute size permit us to term the conidia of T. incarnata "spermatia."

External cardiac defibrillation during wet-surface cooling in pigs

2007 ◽  
Vol 25 (4) ◽  
pp. 420-424 ◽  
Author(s):  
Alexandra Schratter ◽  
Wolfgang Weihs ◽  
Michael Holzer ◽  
Andreas Janata ◽  
Wilhelm Behringer ◽  
...  
Keyword(s):  
Surface Cooling ◽  
Wet Surface

The Air-Side Thermal-Hydraulic Performance of Flat-Tube Heat Exchangers With Louvered, Wavy, and Plain Fins Under Dry and Wet Conditions

2009 ◽  
Vol 131 (6) ◽  
Author(s):  
Young-Gil Park ◽  
Anthony M. Jacobi
Keyword(s):  
Heat Transfer ◽  
Heat Exchangers ◽  
Hydraulic Performance ◽  
Operating Conditions ◽  
Geometrical Parameters ◽  
Flat Tube ◽  
Parametric Effects ◽  
Dry And Wet Conditions ◽  
Wet Surface ◽  
Friction Performance

The air-side thermal-hydraulic performance of flat-tube aluminum heat exchangers is studied experimentally for conditions typical to air-conditioning applications, for heat exchangers constructed with serpentine louvered, wavy, and plain fins. Using a closed-loop calorimetric wind tunnel, heat transfer and pressure drop are measured at air face velocities from 0.5 m/s to 2.8 m/s for dry- and wet-surface conditions. Parametric effects related to geometry and operating conditions on heat transfer and friction performance of the heat exchangers are explored. Significant differences in the effect of geometrical parameters are found for dry and wet conditions. For the louver-fin geometry, using a combined database from the present and the previous studies, empirical curve-fits for the Colburn j- and f-factors are developed in terms of a wet-surface multiplier. The wet-surface multiplier correlations fit the present database with rms relative residuals of 21.1% and 24.4% for j and f multipliers, respectively. Alternatively, stand-alone Colburn j and f correlations give rms relative residuals of 22.7% and 29.1%, respectively.

Solution of Levi Civita’s Problem by Infinite Matrix Inversion

1973 ◽  
Vol 40 (1) ◽  
pp. 31-36 ◽  
Author(s):  
M. Bentwich
Keyword(s):  
Flow Pattern ◽  
Flow Direction ◽  
Leading Edge ◽  
Arbitrary Cross Section ◽  
Matrix Inversion ◽  
Infinite Matrix ◽  
Algebraic Equations ◽  
Flow Past ◽  
Linear Algebraic Equations ◽  
Wet Surface

The author proposes a new method by which one can solve for the two-dimensional irrotational fully cavitating flow past a cylinder of arbitrary cross section. Unlike the available solutions, it is in the form of two expansions each valid in part of the complex potential plane w = Φ + iΨ. The a priori unknown coefficients in the two expansions are linked by infinitely many linear algebraic equations. By inverting the associated matrix and utilizing the boundary condition, that represent the geometry of the wet surface, the coefficients in the expansions are evaluated and the solution is completed. Cases in which the wet surface is circular, the pressure along the free streamlines is constant, and the entire flow pattern is symmetric with respect to flow direction at infinity are considered in detail. Also, the well-known solution for the flow past a flat plate is compared to that obtained by the method of matrix inversion. Judging from these results, the convergence of the series appears to be very rapid. The author finally discusses the applicability of the method to cases in which the obstacle has a sharp leading edge, the pressure in the cavity is not uniform, or the flow pattern is not symmetric.

Major polypeptides associated with differentiation in psychrophilic fungi

1987 ◽  
Vol 65 (2) ◽  
pp. 233-241 ◽  
Author(s):  
W. J. Newsted ◽  
N. P. A. Huner
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Molecular Mass ◽  
Relative Proportion ◽  
Sodium Dodecyl ◽  
Isoelectric Points ◽  
Dodecyl Sulfate ◽  
Typhula Incarnata ◽  
Culturing Conditions ◽  
Sclerotial Development ◽  
Polypeptide Profile

Major polypeptides were observed upon one-dimensional sodium dodecyl sulfate gel electrophoresis of sclerotial extracts of the following psychrophiles: Myriosclerotinia borealis, Coprinus psychromorbidus, Typhula idahoensis, and Typhula incarnata. In general, the number, molecular mass, and relative proportion of these major sclerotial polypeptides varied considerably from species to species. Furthermore, in the case of M. borealis, the major sclerotial polypeptide did not appear to be an artifact of culturing conditions since a major polypeptide of similar molecular mass was also present in sclerotia of M. borealis collected from the field. Generally, the major sclerotial polypeptides were visible in the sclerotial initials but were not apparent in the vegetative hyphae. Thus, these major sclerotial polypeptides appear to be expressed as a function of sclerotial development. Electrophoresis of protein extracts of T. idahoensis and T. incarnata initially solubilized either in sodium dodecyl sulfate or urea sample buffer indicated that the type of denaturant initially used had a profound influence on the relative proportions of the major polypeptides and the overall polypeptide profile. Isoelectric focusing of sclerotial extracts indicated that the isoelectric points of the major sclerotial polypeptides of M. borealis ranged from 6.2 to 6.7, whereas the values of the major sclerotial polypeptides of the other three species were basic and ranged from 7.0 to 7.7.

scholarly journals ADDITION OF HYDROFOIL TO SHIP RESISTANCE ANALYSIS ON HALASAN CLASS BASED ON VALIDATION TEST RESULT

JOURNAL ASRO ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 105
Author(s):  
Sutrisno Sutrisno ◽  
Wawan Kusdiana ◽  
Ayip Rivai Prabowo ◽  
Muhammad Askhuri
Keyword(s):  
Surface Area ◽  
Load Condition ◽  
Maximum Speed ◽  
Main Function ◽  
Full Load ◽  
Ship Resistance ◽  
Validation Test ◽  
Hit And Run ◽  
Wet Surface ◽  
Test Result

KRI Halasan - 630 is one of the Fast Missile warships with a length of 60 Meters which apart of fast patrol boat class which belongs to TNI-AL. Accordance with the main function not only as a fast missile boat but also as a patrol ship killer, this ship was made to have a high ability in “hit and run”. Since the beginning of the manufacture and after being inaugurated as KRI in 2014 this ship is able to reach speed until 27 knot in full load. As time goes on the same conditions the speed that this ship can achieve is 25 knot at maximum speed. This can be caused by increase in value from the resistance of the ship. One way to reduce the value of the resistance of the ship is to minimize the Wet Surface Area(WSA) from the ship. By adding hydrofoil technology will produce lift force which could lift apart of the hull ship from the water so that Wet Surface Area from the ship will reduce. From the calculation, to lift on the hull of KRI Halasan Class 20 cm in full load condition at 25 knot knows that dimension for fore foil with tapered straight type are wingspan 4,6 m, wingroot 1,33 m, wingtip 0,5 m, and swept angle 11°. And dimension for aft foil with rectangular straight type are wingspan 5,3 m, wingroot and wingtip 1,365 m, and swept angle 0°. The ship resistance with hydrofoil is 265,5 KN, while in the same condition and speed from the ship without hydrofoil the value of ship resistance is 267 KN. By adding hydrofoil technology could reduce the ship resistance 1,5 KN. This values could make 19,29 KW or 25,86 Hp in power saving.Keywords : Hydrofoil technology, Ship Resistance, Halasan Class

Research for a Uniform Quality Grading System for Tires V. Effect of Environment on Tread Wear Rate

1971 ◽  
Vol 44 (4) ◽  
pp. 952-959 ◽  
Author(s):  
F. C. Brenner ◽  
A. Kondo ◽  
G. B. Cohen
Keyword(s):  
Wear Rate ◽  
Grading System ◽  
Passenger Car ◽  
Contact Patch ◽  
Quality Grading ◽  
Wet Surface

Abstract In tests with bias ply, belted bias, and radial commercial passenger car tires it was found that the rate of wear does not change as the tires are worn. It was also shown in a test which there were dry and wet periods that the same tires wore at a faster rate in the wet than in the dry. This observation was reinforced when a comparison of two tests run with duplicate sets of tires in January and June on the same course gave greatly different results; the greater rate of wear occurring in January when the course was continuously wet. Finally an explanation for the observation that tires wear faster on wet pavements has been proposed. The tire is more deformed passing through the contact patch on a wet surface than on a dry. In addition, the water, acting as a lubricant, reduces resistance to motion between surfaces of the cut rubber or the surface of the cutting asperity and the rubber.

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