This study numerically investigated heat transfer and fluid flow characteristics in a novel cylindrical heat sink with helical minichannels for the laminar flow of fluid with temperature-dependent properties. A finite volume method was employed to obtain the solution of governing equations. The effects of helical angle, channel aspect ratio, and Reynolds number, which were regarded as main para...

Sink location is considered as a basic service in geographic routing in wireless sensor networks. Obtaining the location of sink node by source node using an efficient method with low complexity has always been a challenging issue in research. In this paper, a sink location algorithm based on Fano plane is proposed. The research challenge is how to ensure the intersection of two SLQ (Location Q...

OBJECTIVES To understand how caring for grandchildren affects the physical and mental health of grandparents in Taiwan. METHOD Grandparents aged 50 and older from 4 waves of the Taiwan Longitudinal Study on Aging (1993-2003, n = 3,711) were divided into 7 categories based on living arrangement and caregiving history. Generalized estimation equations controlling for sociodemographic characteri...

BACKGROUND AND AIMS In crops other than sugarcane there is good evidence that the size and activity of carbon sinks influence source activity via sugar-related regulation of the enzymes of photosynthesis, an effect that is partly mediated through coarse regulation of gene expression. METHODS In the current study, leaf shading treatments were used to perturb the source-sink balance in 12-month...

To study the anomalous heat effect of Nibased binary-metal-nano-powder samples by gas-phase hydrogen isotope absorption/desorption, three kinds of samples CNZ, CNZ-II and NZ were tested for the temperature range 300-573 K. The highest excess heat power, ca. 2W/g-Ni was obtained with CNZ at 573 K. Peculiar H(D)-isotopic effect and sudden heat sink by abrupt H(D)-desorption were observed. The hea...

a microgravity survey was conducted for detecting the sink-holes at site of a power plant. pits, man-made tunnels and canals were considered as topographical effects and were corrected. to show the capability of the method two sites in a power plant have been surveyed for existing areas which can be affected by sink-holes overnight. ground shakes due to the running facilities were also preventi...

Anthropogenic elevated nitrogen (N) deposition has an accelerated terrestrial N cycle, shaping soil carbon dynamics and storage through altering organic mineralization processes. However, it remains unclear how long-term high affects in tropical forests. To address this question, we established a experiment N-rich lowland forest of Southern China with additions such as NH4NO3 0 (Control), 50 (L...

Understanding crop response to manipulations in source (number of leaves) and sink (panicle) during the growing season provides useful information develop breeding strategies. In present study, we assessed how source-sink manipulation can affect sorghum (Sorghum bicolor L.) yield its components—grain number grain weight (including filling dynamics)—for hybrids released past 60 years. The field ...

The potential interactive effects of iron (Fe) limitation and Ocean Acidification in the Southern Ocean (SO) are largely unknown. Here we present results of a long-term incubation experiment investigating the combined effects of CO2 and Fe availability on natural phytoplankton assemblages from the Weddell Sea, Antarctica. Active Chl a fluorescence measurements revealed that we successfully cult...