Geometrically Incremental Volume Sampling for Ephemeral Channel Pollutants

1996 ◽  
Vol 12 (6) ◽  
pp. 655-661 ◽  
Author(s):  
T. K. Tremwel ◽  
K. L. Campbell ◽  
L. W. Miller
Keyword(s):  
Incremental Volume

Uterine work in parturition

1976 ◽  
Vol 41 (3) ◽  
pp. 316-322 ◽  
Author(s):  
T. J. Kriewall
Keyword(s):  
Viscoelastic Model ◽  
Geometrical Model ◽  
Clinical Findings ◽  
Cervical Dilatation ◽  
Wave Form ◽  
Intrauterine Pressure ◽  
Wave Forms ◽  
Internal Volume ◽  
Synergistic Relationship ◽  
Incremental Volume

This paper presents a theoretical analysis relating work expended by the uterus to the synergistic relationship between intrauterine pressure (IUP) and cervical dilatation (CD). By utilizing a geometrical model for the fetal presenting part which is assumed to be in contact with the cervix, the changes in internal volume of the uterus with each contraction can be shown to be functionally related to cervical dilatation. Thus work, expressed in terms of foot-pounds, can be calculated using the integral of pressure times incremental volume. By simulating intrauterine pressure and cervical dilatation with continuous analytical wave forms, the alterations required in uterine work to dilate the cervix are calculated for various wave-form aberrations which are seen in clinical situations. The wave-form aberrations are applied to an elastic cervical model as well as a viscoelastic model. Using the principles of thermodynamics the areas of the fetouterine complex which absorb the work generated by the contractions are defined. It is shown that the efficiency of the contractions to dilate the cervix can be calculated by evaluating the work expended in these various areas of energy absorption. The purpose of this paper is to present the theory upon which clinical findings in obstetrics can be based so that conclusions drawn will be technically sound.

Orthoborate Halides with the Formula (M+II)5(BO3)3X: Syntheses, Crystal Structures and Raman Spectra of Eu5(BO3)3Cl and Ba5(BO3)3X (X = Cl, Br)

2011 ◽  
Vol 66 (4) ◽  
pp. 359-365 ◽  
Author(s):  
Olaf Reckeweg ◽  
Armin Schulz ◽  
Francis J. DiSalvo
Keyword(s):  
Single Crystal ◽  
Single Crystals ◽  
Crystal Structures ◽  
Raman Spectra ◽  
Direct Synthesis ◽  
X Ray Diffraction ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
X Ray ◽  
Incremental Volume

Single crystals of Eu5(BO3)3Cl were obtained by serendipity by reacting Eu2O3 and Mg with B2O3 at 1300 K in the presence of an NaCl melt for 13 h in silica-jacketed Nb ampoules. Ba5(BO3)3X (X = Cl, Br) crystals were formed by direct synthesis from appropriate amounts of Ba(OH)2, H3BO3 and the respective barium halide (hydrate) in alumina crucibles kept in the open atmosphere at 1300 K for 13 h. The crystal structures of the title compounds were determined with single-crystal X-ray diffraction. All compounds crystallize isotypically to Sr5(BO3)3Cl in the orthorhombic space group C2221 (no. 20, Z = 4) with the lattice parameters a = 1000.34(7), b = 1419.00(9), c = 739.48(5) pm for Eu5(BO3)3Cl, a = 1045.49(5), b = 1487.89(8), c = 787.01(4) pm for Ba5(BO3)3Cl, and a = 1048.76(7), b = 1481.13(9) and c = 801.22(5) pm for Ba5(BO3)3Br. The Raman spectra of all compounds were acquired and are presented and compared to literature data. The incremental volume of the orthoborate (BO3)3− anion has been determined and is compared to the Biltz volume

scholarly journals Incremental Volume Rendering Using Hierarchical Compression

1996 ◽  
Vol 15 (3) ◽  
pp. 45-55 ◽  
Author(s):  
Michael B. Haley ◽  
Edwin H. Blake
Keyword(s):  
Volume Rendering ◽  
Hierarchical Compression ◽  
Incremental Volume

Venezuelan Gas Development

1994 ◽  
Vol 12 (2-3) ◽  
pp. 167-175
Author(s):  
Harry A. Michael
Keyword(s):  
Natural Gas ◽  
Crude Oil ◽  
Energy Markets ◽  
Turn Of The Century ◽  
Considerable Progress ◽  
Petroleum Bitumen ◽  
Strong Performance ◽  
The Republic ◽  
Marketing Flexibility ◽  
Incremental Volume

Petroleos de Venezuela, S.A. (PDVSA) is an international energy corporation wholly owned by the Republic of Venezuela, whose principal areas of activity are petroleum, bitumen, natural gas, coal and petrochemicals. The steady expansion of PDVSA's NATURAL GAS INFRASTRUCTURE IN Venezuela and the strong performance of its subsidiaries, has contributed to increase its operational and marketing flexibility, thus allowing it to evolve from a simple exporter of crude oil and refined products to an important supplier of Natural Gas Liquids (NGL) to the world's major energy markets. In this respect Corpoven one of PDVSA's affiliated Companies has made considerable progress with the expansion of its Eastern Venezuela Cryogenic Complex. In 1994 it will produce an incremental volume of 45 thousand barrels per day of natural gas liquids from gas pipe in from northern Monagas region. Also, it has programmed the installation of two other Criogenic Plants in the next ten years, and as a result NGL exports are expected to increase from 175 thousand barrels day in 1994 to 232 thousand barrels day in 1998. Plans are also well underway for Venezuela to become a major exporter of LNG towards the turn of the century. More specifically, at the end of 1992, another PDVSA subsidiary, Lagoven, reached an agreement with Exxon, Shall and Mitsubishi to develop the Cristobal Colon LNG project, which calls for the exploitation of vast reserves of natural gas located in the Gulf of Paria, in northeastern Venezuela. The projected LNG production is in the order of 6 million tons per year.

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