From Source To Sink

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PNP (sourcing) vs NPN (sinking) What is it? Choosing PNP vs NPN and NO vs NC Basic electrical wiring in typical automation sensor applications Balluff Basics PNP (sourcing) Sensor delivers (sources) positive 24V DC to the

Fluids Lecture 15 Notes - MIT

Source and Sink Definition A 2-D source is most clearly specified in polar coordinates. The radial and tangential velocity components are defined to be Vr = Λ 2πr, Vθ = 0 where Λ is a scaling constant called the source strength. The volume flow rate per unit span V˙′ across a circle of radius ris computed as follows. V˙′ = Z2π 0

Potential Flow Theory - MIT

source, negative or inwards for a sink) for the entire length of hose, b. For simplicity take a unit length into the page (b = 1) essentially considering this as 2D flow. Polar coordinates come in quite handy here. The source is located at the origin of the coordinateysystem. From the sketch above you can see that there is no circumferential

DN1152 Gate Driver and MOSFET Compatibility

parameter to match the gate driver and MOSFET is the gate driver source/sink current to the MOSFET total gate charge. The relationship is seen in the equation below: Q g = I x t Where Q g is the total gate charge of the MOSFET, I is the source/sink current of the gate driver, and t is the rise and fall time of the MOSFET.

Carbon Sinks and Sources

sink to source that is leading to increased global temperatures and global climate change. As more carbon is released than can be absorbed by the natu-rally occurring carbon cycle, this causes changes in the amount of carbon in the atmosphere and af-fects how solar energy is absorbed and reflected on earth. Discuss with students how the

Source:sink imbalance detected with leaf‐ and canopy‐level

source:sink balance, including: defoliation, debudding or sink removal; manipulation of temperature, light, nitrogen or CO 2 levels; and trans-genic modifications (Ainsworth, Rogers, Nelson, & Long, 2004; White et al., 2016). Direct manipulations of the carbon sink in field experi-ments are comparatively rare. Here, we reduced the carbon sink of

Source-sink manipulation in canola (Brassica napus L

Source-sink relation, shading, pod removal, defoliation, supplemental irrigation Introduction Sensitivity of crops to source and sink manipulation has been used to investigate the critical period for determining grain number and to evaluate whether the yield is limited by sink or source during the grain filling period.

Source and sink mechanisms of nitrogen transport and use

V. Nitrogen transport from source leaf to sink 40 VI. Nitrogen import into sinks 42 VII. Relationship between source and sink nitrogen transport processes and metabolism 43 VIII. Regulation of nitrogen transport 43 IX. Strategies for crop improvement 44 X. Conclusions 46 Acknowledgements 47 References 47 New Phytologist (2018) 217: 35 53 doi

Vol. 132, No. 5 The American Naturalist November 1988

source from the sink can stabilize an otherwise unstable predator-prey interac-tion. Holt argued, however, that passive dispersal between source and sink habitats in a temporally constant environment is usually selectively disadvanta-geous, implying that sink populations will be transient in evolutionary time. In this paper, I consider the

A Source-Sink Hypothesis for Abyssal Biodiversity

the source-sink hypothesis can be tested further with ex-isting archived collections of deep-sea organisms by doc-umenting biogeographic ranges, gradients of standing stock, reproductive patterns, and genetic population struc-ture. If source-sink dynamics do play a major role in com-munity assembly on such enormous spatial scales, this


source-sink populations can persist for many generations fol-lowing change before extinction finally occurs [ 23, 24]. Perhaps the most neglected implication of source-sink dy-namics for conservation concerns our approach to measuring the impacts of anthropogenic change on wild species. In source-sink systems, observed patterns of population


ACROSS LANDSCAPES TO CONTINENTAL SOURCE SINK DYNAMICS PENN LLOYD,1 THOMAS E. MARTIN,ROLAND L. REDMOND,UTE LANGNER, AND MELISSA M. HART USGS Biological Resources Discipline, Montana Cooperative Wildlife Research Unit, University of Montana, Missoula, Montana 59812 USA Abstract. Forest fragmentation may cause increased brood parasitism and nest

Understanding Peak Source and Sink Current Parameters

Understanding Peak Source and Sink Current Parameters Mateo Begue, High Power Drivers Gate drivers are often confused as continuous current sources because of the IOH and IOL specifications in the datasheet. For example, designers looking at the UCC5320SC might read the parameters 4.3-A source and 4.4-A sink and mistakenly believe these devices


living) is considered a source Anything that absorbs and holds CO 2 from the air or water is considered a sink. Over geologic time, CO 2 sources and sinks generally balance. In today's atmosphere, however, CO 2 levels are climbing in a dramatic and easily measurable way, providing evidence that there are now more CO 2 sources than sinks.

A source&sink model of the generation of plate tectonics from

The source-sink field is derived fi'om the horizontal divergence of plate velocities and thus directly prescribes poloidal notion. The toroidal fioxv field is solved through the non-Newtonian Stokes equat. ion for shallow la.yer tangential flow on the surface of a sphere. Two plate motion models a. re used to derive the source-sink field.

Sewers as a Source and Sink of Chlorinated-Solvent

Sewers as a Source and Sink of Chlorinated-Solvent Groundwater Contamination, Marine Corps Recruit Depot, Parris Island, South Carolina Don A. Vroblesky, Matthew D. Petkewich, Mark A. Lowery, and James E. Landmeyer

ECE 255, Current Sources, Mirrors etc

sink (source). Here, V O is chosen to ensure both transistors are in saturation (Courtesy of Sedra and Smith). Printed on April 5, 2018 at 10:51: W.C. Chew and S.K. Gupta. 1A current sink is a device that draws current into it, while a current source is a device where current exudes from it. 1

A source-sink model explains the difference in the metabolic

from source tissues, such as leaves, to sink tissues, such as stems, roots, and seeds [19]. Carbohydrate regulation genes influence sugar metabolism, adjust resource allo-cation for plant responses to stress and variations in sig-nals from the environment [20, 21]. Gene expression changes the source and sink activities in plants to regu-

Regional Dynamics of Plants: A Review of Evidence for Remnant

source-sink and metapopulations Ove Eriksson Eriksson, 0. 1996. Regional dynamics of plants: a review of evidence for remnant, source-sink and metapopulations. - Oikos 77: 248-258. Despite a long tradition in plant ecology of studies of patch dynamics, recent developments of models for large scale dynamics in source-sink and metapopulations

Source-Sink Regulation in Crops under Water Deficit

source sink communication, as well as the respective regulatory mechanisms underpinning plant productivity. We also highlight stress-tolerant traits that can contribute to harness source and sink strengths towards producing high-yielding and drought-tolerant crops, depending on the drought scenario. Source and Sink Strength

The Cassava Source Sink project: opportunities and challenges

with improved source sink relations and increased yield potential. Keywords: source, sink, Cassava, Manihot esculenta, biotechnology, yield. INTRODUCTION The world population is expected to increase from a cur-rently projected 7.8 9.7 billion people in 2050 and may reach a peak at 11 billion by the end of this century (United


SOURCE SINK RELATIONSHIP Source 1. It is the regions of photoassimilates production 2. Export photoassimilates 3. Chlorophyllous tissues 4. Leaves, stipules, fruit wall, young stem, pedicel, awns, peduncle, calyx, bract etc Sink 1. Regions of photoassimilates consumption 2. Import photoassimilates 3. Growing regions 4.

Source sink dynamics explain the distribution and persistence

Abstract Source sink theory is an ecological frame-work that describes how site and habitat-specific demo-graphic rates and patch connectivity can explain population structure and persistence across heteroge-neous landscapes. Although commonly used in conser-vation planning, source sink theory has rarely been

Science Plans Source-to-Sink (S2S)

source to sink represents the return limb of a mass flux loop that begins when rock is first exposed to subaerial erosion by tectonic pro-cesses such as crustal thickening or volcanic processes. The suite of connected environments through which the journey takes place is the source to sink system (Figure 1). The connected environments of the

IMapple: a source-sink developmental model for Golden

provides information about incoming light and energy that is distributed by a source-sink mathematical model. Our model aims to be parametric, highly interactive, and usable. Information about the qualitative and quantitative relationships of different parts of the model is provided interactively via a simple graphical user interface or

Math 3331 Di erential Equations

Spiral Source: ↵>0 Spiral Sink: ↵<0 Borderline Case: Center (↵ = 0) is border between spiral source (↵>0) and spiral sink (↵<0). Jiwen He, University of Houston Math 3331 Di↵erential Equations Summer, 2014 12 / 24

Chapter 16 Contribution of Source-Sink Theory to Protected

Source-sink theory offers a basis for understanding some of the factors that influence the function of protected areas. The spatially explicit population dynamics that are the basis of source sink theory may be particularly likely in and around protected areas. Protected areas may be subject to source sink

Precision Current Sources and Sinks Using Voltage References

Figure 5. Current Sink Using the REF3425 3 Current Source with Voltage References A precision currents source can be created with a similar structure as a currents sink. The main difference the current source will source current to the load to ground which allows support for different kind of applications.

The Terrestrial Carbon Sink

An ecosystem can be a sink for carbon in one year, and a source in another, but must be a sink over long timescales to sequester more carbon. Althoughecosystems areoftenclassified as sinks or sources based onobservedfluxes ofcarbon between an ecosystem and the atmosphere, a true quantification of sink strength must take into

Seasonal Source-Sink Dynamics at the Edge of a Species Range

address source-sink dynamics is difficult to obtain, and relatively few empirical studies have been done on source-sink dynamics (see Pulliam 1996, Breininger and Carter 2003, Lowe et al. 2006), let alone linking these dynamics to a species' range (Thomson 2007). We used a within-landscape approach to elucidate the

9.3-4: Phase Plane Portraits - Colorado State University

source degenerate nodal source spiral sink degenerate nodal sink nodal source nodal sink saddle unstable saddle−node stable saddle−node T D=T D 2/4 center Ex.: A = 8 5 −10 −7 D = −6 ⇒ saddle Ex.: A = −2 0 1 −1 ˆ D = 2, T = −3 T2 − 4D = 1 ˙ ⇒ nodal sink Ex.: A = −10 −25 5 10 ˆ D = 25 T = 0 ˙ ⇒ center c = 5 > 0


107 arise from alternative approaches for source:sink manipulation. We took a holistic 108 approach to investigating source-sink interactions, measuring the responses of 109 development, growth, allocation, photosynthesis and key carbon and nitrogen 110 metabolite pools on the same plants. Together, these simultaneous measurements


FROM SOURCE TO SINK: Reducing Commodity Agriculture s Impacts on Natural Lands. HIGHLIGHTS: Large-scale industrial agriculture is the single largest driver

Source to Sink Systems Around the World and Through Time

AGU Chapman Conference on Source to Sink Systems Around the World and Through Time Oxnard, California, USA 24-27 January 2011 Conveners Charles A. Nittrouer,University of Washington

3.2 Sources, Sinks, Saddles, and Spirals

Example for a source: y00 3y0 C2y D0 leads to s2 3s C2 D.s 2/.s 1/ D0. The roots 1 and 2 are positive. The solutions grow and e2t dominates. Example for a sink: y00 C3y0 C2y D0 leads to s2 C3s C2 D.s C2/.s C1/ D0. The roots 2 and 1 are negative. The solutions decay and e t dominates. The Second Three Pictures We move to the case of complex

ANNEX 3 Methodological Descriptions for Additional Source or

Additional Source or Sink Categories 3.1. Methodology for Estimating Emissions of CH 4, N 2 O, and Indirect Greenhouse Gases from Stationary Combustion Estimates of CH 4 and N 2 O Emissions Methane (CH 4) and nitrous oxide (N 2 O) emissions from stationary combustion were estimated using methods from the Intergovernmental Panel on Climate

Power Source / Sink Inverters for high efficient EV Battery

Power Sink / Source Inverter (PSI). There are several methods to select one from the three phase currents to control. The simplest control can be realized by a single PWM current controller, so that its current is multiplexed into the phase always with the smallest amplitude. The multiplexing is done at 50Hz repetition rate.

The role of habitat selection behavior in population dynamics

Danielson 1991). Source sink dynamics has found empirical support (Pulliam 1996), and is considered one of the mechanistic foundations for landscape ecology (Wiens et al. 1993). Although source sink dynamics were originally described for plants, in which dispersal between source and sink patches was passive (Keddy 1982, Watkinson 1985