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  • 1
    Online Resource
    Online Resource
    Newark :John Wiley & Sons, Incorporated,
    Keywords: Lactation. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (290 pages)
    Edition: 1st ed.
    ISBN: 9781119279679
    DDC: 573.6/79
    Language: English
    Note: Cover -- Title Page -- Copyright -- Contents -- Preface -- Chapter 1 Overview of Mammary Development -- Evolutionary Aspects -- Species Variation -- Fundamentals of Structure and Function -- Mammary Secretions and Milk -- Evaluation of Mammary Development -- Tissue, Cells, and Organization -- How to Quantify Mammary Development -- Gross Measures -- Biochemical Indices -- Histological Indices -- Technology Advances -- Cytology Indices -- Summary -- Structural Aspects of Mammary Development -- Fetal Development -- Structural Precursors of Mammary Glands -- Gland Number, Sexual Differentiation, and Species Variation -- Summary -- Birth to Conception -- Conception to Parturition -- Parenchymal and Stromal Tissue Development -- Appearance of Alveoli and Secretory Cells -- Mammary Cell Differentiation -- Lactating Mammary Gland -- Onset of Lactation to Mammary Involution -- The Lactation Curve -- Mammary Involution -- Unique Aspects of Involution in the Dairy Cow -- Chapter 2 Mammary Development, Anatomy, and Physiology -- Overview of Interactions-Focus on the Dairy Cow -- Blood Supply -- Angiogenesis -- Circulatory Route -- The Lymphatic System -- Significance of Blood Flow in Milk Production -- Nervous System -- Organizational Overview -- Autonomic Nervous System -- Milk Ejection and the Nervous System -- Endocrine System -- Classification of Endocrine Glands and Secretions -- Mechanisms of Hormone Action -- Chapter 3 Functional Developmentof the Mammary Gland -- Onset of Milk Secretion -- Lactogenesis -- Cellular Differentiation -- Cell-Cell Interactions -- Role of Milk Removal in Milk Secretion -- Milk Component Biosynthesis -- Structure and Function at the Secretory Cell Level -- Pathways for Protein and Lactose Secretion -- Pathways for Lipid Secretion -- Secretion of Other Milk Constituents -- Chapter 4 Milk Component Biosynthesis. , Metabolic Pathways and Precursors for Milk Biosynthesis -- Glycolysis, Gluconeogenesis, Krebs Cycle, and Energy Requirements -- Lactose Biosynthesis -- Milk Fat Biosynthesis -- Milk Protein Biosynthesis -- Biotechnologies and the Mammary Gland -- Chapter 5 Milking Management -- Physiological Factors and Machine Milking -- Teat Structure -- Teat Opening, Teat Canal, and Teat End -- Milking Machine Components -- Machine Milking and Mastitis Control -- Monitoring Udder Health -- Chapter 6 Endocrine, Growth Factor, and Neural Regulation of Mammary Development -- Steroid Hormones and Mammogenesis -- Steroids and Pregnancy -- Anterior Pituitary Hormones and Mammogenesis -- Other Hormones and Mammogenesis -- Local Tissue Mediators of Endocrine Action in Mammogenesis -- The Insulin-like Growth Factors Axis -- Epidermal Growth Factor Family -- Fibroblast Growth Factors -- Transforming Growth Factor -β -- Hepatocyte Growth Factor -- Parathyroid Hormone-Related Peptide -- Other Stroma-Derived Growth Regulators -- Chapter 7 Endocrine, Growth Factor, and Neural Regulation of Mammary Function -- Endocrine Regulation of Lactogenesis -- Periparturient Endocrine Profiles -- Essential Roles of Prl, Glucocorticoids, and Progesterone -- Endocrine Regulation of Galactopoiesis -- Hormone Secretion with Milking and Suckling -- Hormones and Galactopoiesis -- Prolactin -- Glucocorticoids -- Oxytocin -- Insulin -- Thyroid Hormones -- Somatotropin -- Somatotropin Effects on Milk Production -- Mode of Action for bST -- Effects on Udder Health -- Galactopoiesis and GH in Other Species -- Insulin-like Growth Factors and Galactopoiesis -- Pregnancy and Galactopoiesis -- Galactopoietic Effect of Milk Removal -- Other Aspects of Galactopoiesis -- Chapter 8 Biochemical Properties of Mammary Secretions -- Colostrum Formation -- Immunity Overview -- Antibody Structure and Function. , Antibody Transport and Receptors -- Colostrum Feeding and Management -- Milk Yield and Composition During Lactation -- Bioactive Milk Peptides, Growth Factors, and Hormones in Milk -- Hormones and Growth Factors in Milk -- Bioactive Peptides -- Chapter 9 Management and Nutritional Impacts on Mammary Development and Lactational Performance -- Interactions Between Metabolism and Intake -- Hormone and Metabolic Adjustments to Support Lactation -- Factors Controlling Voluntary Dry Matter Intake -- Role of the Hormone Leptin -- Other Hormones and VDMI in Ruminants -- Ketosis and Other Metabolic Disorders -- Parturient Hypocalcemia (Milk Fever) -- Acidosis and Laminitis -- Factors Affecting Milk Production -- Environmental Conditions -- Animal Factors Affecting Milk Production -- Role of Stress on Milk Production and Health -- Chapter 10 Manipulation of Mammary Development and Milk Production -- Photoperiod Effects on Dairy Cattle -- Effect of Dietary Manipulation on Mammary Development -- Effect of Growth Hormone on Mammary Development -- References -- Glossary -- Index.
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  • 2
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: First physics results are presented from MAST (Mega-Amp Spherical Tokamak), one of the new generation of purpose built spherical tokamaks (STs) now commencing operation. Some of these results demonstrate, for the first time, the novel effects of low aspect ratio, for example, the enhancement of resistivity due to neo-classical effects. H-mode is achieved and the transition to H-mode is accompanied by a tenfold steepening of the edge density gradient which may enable the successful application of electron Bernstein wave heating in STs. Studies of halo currents show that these less than expected from conventional tokamak results, and measurements of divertor power loading confirm that most of the power flows to the outer strike points, easing the power handling on the inner points (a critical issue for STs). © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 7 (2000), S. 957-962 
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: This paper reports first observations in a tokamak plasma of MeV energy ions produced by close elastic collisions (knock-on) between deuterium–tritium fusion α-particles and thermal plasma fuel ions. Measurements of flux of MeV energy helium and deuterium atoms from the plasma in the Joint European Torus [P.-H. Rebut, A. Gibson, M. Huget et al., Nucl. Fusion 32, 187 (1992)] were made from which line-integrated energy distribution function of knock-on deuterons, F¯d(E), was deduced. Neutralization of the deuterons and α-particles was effected by charge-exchange with one- and two-electron species of the main intrinsic plasma impurities, carbon, beryllium, and helium. Deduced F¯d(E) is shown to be in agreement with calculations using classical confinement and slowing-down of fusion α-particles and knock-on deuterons. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The operational limits observed in spherical tokamaks, notably the small tight aspect ratio tokamak (START) device [A. Sykes et al., Nucl. Fusion 32, 694 (1992)], are consistent with those found in conventional aspect ratio tokamaks. In particular the highest β achieved (∼40%) is consistent with an ideal magneto-hydro-dynamic (MHD) Troyon type limit, the upper limit on density is well described by the Greenwald density (πa2n¯e/Ip∼1) and the normalized current (Ip/aBt) is limited such that q95(approximately-greater-than)2. Stability calculations indicate scope for increasing both normalized β and normalized current beyond the values so far achieved, although wall stabilization is generally needed for low-n modes. In double null configurations current terminating disruptions occur at each of the operational boundaries, though the current quench tends to be slow at the density limit and disruptions at high β may be due to the low q. In early limiter START discharges, before the divertor coils were installed, disruptions rarely occurred. Instead internal reconnection events which have all the characteristics of a disruption except the current quench occurred. These various disruptive behaviors are explained in terms of a model in which helicity is conserved during the disruption. Due to the low toroidal field beam ions in START, and α particles in a ST power plant, are super-Alfvénic. This gives the possibility for toroidal Alfvén eigenmodes (TAEs) to occur and such modes are frequently observed in START neutral beam injection (NBI) discharges, but seem to be benign. The features of these observed TAEs are shown to be in agreement with MHD calculations.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 4 (1997), S. 3667-3675 
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The trajectories of neutral beam injected energetic ions in spherical tokamaks are examined. The large poloidal magnetic field in the outboard region of spherical tokamaks causes neutral beam injected ions to be born on trapped orbits even with cotangential injection. Numerical solutions to the equations for particle motion and for guiding center drifts are compared in several magnetic equilibria for a range of particle initial conditions. Even when rL/a∼1/4 the guiding center orbits closely resemble the path of the instantaneous center of gyration of the particle motion; exceptions occur primarily for orbits near the trapped/passing boundary. Finite Larmor radius effects are included in guiding center simulations of prompt orbit loss in the National Spherical Tokamak Experiment (NSTX) [J. Spitzer et al., Fusion Technol. 30, 1337 (1996)]. Orbit loss in the NSTX is caused primarily by collisions with the close fitting conducting shell, and severe losses would be expected with counter directed injection. While most orbits are similar to those found in conventional tokamaks, additional orbit types are possible in spherical tokamaks. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The Small Tight Aspect Ratio Tokamak (START) [A. Sykes et al., Nucl. Fusion 32, 769 (1994)] spherical tokamak has recently achieved the record value of toroidal β∼30% in a tokamak-like configuration. The improvements that have made these results possible are presented along with a description of the global equilibrium parameters of the discharges. The ideal magnetohydrodynamic (MHD) stability of these discharges is analyzed, and they are found to be in close proximity to both the ballooning limit and the external current driven kink limit, but they are found to be far from the pressure driven external kink limit. Disruptivity for a range of shots is not correlated with the normalized β limit, but does correlate well with the empirical high-li disruption limit. The transport properties of these high-β equilibria are analyzed and compared to conventional tokamak scaling laws and transport models. The global transport is at least as good as that predicted by the ITER97-ELMy (edge-localized) scaling law. The local ion transport is in good agreement with that predicted by neoclassical models. The electron transport is anomalous, showing rough agreement with the Lackner–Gottardi transport model. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 0303-7207
    Keywords: Extracellular matrix ; Growth ; IGF-1 ; Lactogenic hormone ; MMTV-LTR ; Mammary epithelial cell (bovine) ; Mouse mammary tumor virus-long terminal repeat
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Developmental Biology 129 (1988), S. 380-389 
    ISSN: 0012-1606
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    International Journal of Biochemistry 16 (1984), S. 855-865 
    ISSN: 0020-711X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    International Journal of Biochemistry 15 (1983), S. 777-788 
    ISSN: 0020-711X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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