Rational polytopes with Ehrhart coefficients of arbitrary period

Procedures for the collection of tubular fluid and for stopped flow perfusions of the single proximal tubule of the kidney of Necturus maculosus are described. The method used in collection experiments is essentially the same as that developed by Richards and Walker ( Am. J. Physiol. 118: 111, 1937). The method used for stopped flow perfusion is a modification of the method of these authors. A proximal tubule in vivo is blocked with oil at both ends and the intervening space is filled with a perfusion fluid. After a suitable period (for instance, 20 min.), the fluid is withdrawn. By this method perfusion fluids of any desired composition are allowed to remain within the tubular lumen for an arbitrary period of time prior to collection and analysis. Water movement in the tubule is measured using C14 inulin. 27 samples of ureteral urine collected from 10 animals had a Na concentration of 2.8 ± 1.7 mEq/l. Data on the electrolyte composition of Necturus blood are presented, consistent with values given by other authors.

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Deposition of multilayer mirrors with arbitrary period thickness distributions

10.1117/12.505401 ◽

2004 ◽

Cited By ~ 3

Author(s):

Thomas Foltyn ◽

Stefan Braun ◽

Matthew Moss ◽

Andreas Leson

Keyword(s):

Multilayer Mirrors ◽

Arbitrary Period

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FEEDBACK CONTROL OF A QUADRATIC MAP MODEL OF CARDIAC CHAOS

International Journal of Bifurcation and Chaos ◽

10.1142/s0218127496000370 ◽

1996 ◽

Vol 06 (04) ◽

pp. 715-723 ◽

Cited By ~ 25

Author(s):

MICHAEL E. BRANDT ◽

GUANRONG CHEN

Keyword(s):

Fixed Point ◽

Feedback Control ◽

Mapping Method ◽

Quadratic Mapping ◽

Quadratic Map ◽

Chaotic Orbits ◽

Linear Approach ◽

Self Tuning ◽

Arbitrary Period ◽

Tuning Methods

This paper describes methods based on engineering feedback principles for controlling cardiac chaos modeled by a quadratic map. We first discuss briefly the linear approach which is effective at controlling the map to fixed point or near fixed point target trajectories. We then describe and demonstrate self-tuning methods that can control the chaotic orbits of the map to arbitrary period one, two, or three target trajectories. We conclude with a discussion comparing the merits of this approach to the OGY method used by Garfinkel et al. [1992] for control of complex rhythms in rabbit septal preparations, and to the flat-topped quadratic mapping method of Glass and Zeng [1994].

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Evaluating the environmental maintenance impact (EMI): a carbon life cycle assessment (LCA) of the Singgora roof tiles repair in heritage buildings

International Journal of Building Pathology and Adaptation ◽

10.1108/ijbpa-07-2021-0101 ◽

2021 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Brit Anak Kayan ◽

Nur Nadhifah Ashraf

Keyword(s):

Life Cycle Assessment ◽

Life Cycle ◽

Maintenance Phase ◽

Content Type ◽

Embodied Carbon ◽

Repair Efficiency ◽

Holistic Understanding ◽

Heritage Buildings ◽

Heritage Building ◽

Arbitrary Period

PurposeHeritage buildings are consistently impacted by technical and pathological issues associated with their maintenance and conservation such as diminish of building's authenticity and damaging environmental impact. This paper aims to evaluate the environmental maintenance impact (EMI) of the Singgora roof tiles repair in heritage buildings. The EMI is an evaluation upon embodied carbon expenditure during maintenance phase, thus important in repair efficiency appraisal.Design/methodology/approachCalculation procedures within selected boundaries of life cycle assessment (LCA) and arbitrary period enabled evaluation of the EMI of Singgora roof tiles repair in heritage buildings during the maintenance phase.FindingsEvaluation of the EMI could be appreciated as a carbon LCA of Singgora roof tiles repair and has been recognised in embodied carbon expenditure reduction in the form of CO2 emissions mitigation. Importantly, the evaluation underpins decision-making for heritage buildings repair.Practical implicationsEMI evaluation encompasses all building types and forms, thus comprehends the associated applied methodologies. Moreover, the evaluation reflects the emerging environmental challenges of sustaining resilient buildings globally.Social implicationsEMI evaluation highlights options that may be adopted in repair. Indirectly, this implicates heritage building preservation and place's identity protection. Significantly, the evaluation supports environmentally focused conservation and promotes a sustainable repair approach.Originality/valueEMI evaluation of this paper may devoted to the holistic understanding of the complex relations between Singgora roof materials and their environmental performance. Meanwhile, the application of a carbon LCA had dictated integration of multidisciplinary of heritage buildings maintenance and conservation.

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"Arbitrary Period of Disability" As a Mode of Settlement in Compensation Claims

Annals of Internal Medicine ◽

10.7326/0003-4819-3-11-1112 ◽

1930 ◽

Vol 3 (11) ◽

pp. 1112

Author(s):

MORRIS H. KAHN

Keyword(s):

Compensation Claims ◽

Arbitrary Period

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PARAMETERS OF GASEOUS ION EFFECTS ON THE MAMMALIAN TRACHEA

The Journal of General Physiology ◽

10.1085/jgp.42.5.959 ◽

1959 ◽

Vol 42 (5) ◽

pp. 959-969 ◽

Cited By ~ 15

Author(s):

Albert P. Krueger ◽

Richard F. Smith

Keyword(s):

Guinea Pigs ◽

Threshold Value ◽

Ciliary Activity ◽

Air Ions ◽

Tracheal Mucosa ◽

Functional Changes ◽

Functional Efficiency ◽

The Central Nervous System ◽

Ion Effects ◽

Arbitrary Period

A. Duration of Effects Groups of mice exposed to high densities of unipolar light air ions for 72 hours exhibited persistent alterations in the functional efficiency of their tracheas. These effects lasted at least 4 weeks, and in the case of animals treated with (+) ions included diminished ciliary activity, pale and contracted tracheal mucosa, and enhanced vulnerability to trauma. Following treatment with (-) ions, animals displayed increased ciliary activity with no other detectable changes. It required at least 60 minutes of exposure to ions to induce such "permanent" functional changes. B. Minimal Effective Ion Densities The minimal ion densities producing changes in ciliary activity within an arbitrary period of 30 minutes were determined with extirpated tracheal strips from rabbits and guinea pigs. The threshold value for (-) ions was approximately 2.5 x 103 ions/cm.2/sec. and that for (+) ions was in the range between 1 x 104 and 2.5 x 105 ions/cm.2. The minimal ion densities producing changes in ciliary activity within an arbitrary period of 30 minutes were determined with extirpated tracheal strips from rabbits and guinea pigs. The threshold value for (-) ions was approximately 2.5 x 103 ions/cm.2/sec. and that for (+) ions was in the range between 1 x 104 and 2.5 x 105 ions/cm.2. The evidence indicates that ion-induced functional changes in the ciliated epithelium of the pulmonary tree are the results of direct contact of ions with surface cells and do not involve participation of the central nervous system or circulation. So far as ciliary activity is concerned, the number of ions required to produce a change in rate is very small.

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