نتایج جستجو برای: cluster diameter
تعداد نتایج: 312063 فیلتر نتایج به سال:
In a preceeding paper alternative reflections on gravitation were developed. There it was assumed that the primary interaction between two masses is not of attractive but of repulsive nature. The repulsive force results from the impuls transfer produced by the gravitational radiation which is emitted and absorbed by both masses. The observed attractive force between the two masses according to ...
Frozen sections prepared from human aortic tissue containing fatty streak lesions were examined on a thermally controlled stage with a polarizing light microscope. Distinct birefringent droplets, 0.5-5 mum in diameter, were observed, many apparently aggregated into clusters. The clusters were about 20 X 20 mum in diameter (the approximate size of foam cells). Upon being heated, each smectic dro...
Since the discovery of C(60) fullerene, considerable efforts have been devoted to find other elements with similar hollow cage structures. However, search for hollow metallic cages with a diameter similar to that of C(60) fullerene has been elusive. We describe a procedure for the rational design of metallic cages by suitably choosing their size, composition, and charge state. A 22 karat nanogo...
In strawberry ( Fragaria × ananassa ), initial bare-root crown diameter and early-season flower cluster removal have been two factors suspected of influencing fruit yield size. This study evaluated the effect these on day-neutral varieties Monterey Cabrillo. Bare-root crowns with three different diameters were categorized into small (< 0.5 cm), medium (> to 1 large cm) at planting. Each t...
Nanopumps conducting fluids through nanochannels have attracted considerable interest for their potential applications in nanofiltration, water desalination and drug delivery. Here, we demonstrate by molecular dynamics (MD) simulations that a nano screw pump is designed with helical nanowires embedded in a nanochannel, which can be used to drive unidirectional water flow. Such helical nanowires...
Transplanting has been the most widespread planting technique for rice production in Asia. It is estimated that more than 85% of rice production in china, and almost 100% in Northeast China adopted transplanting. The healthy and vigorous seeding can reduce thetransplanting shock’ and is the most important for final yield formation. The large root diameter, long root length, large surface area a...
Background and aims – We studied a cluster of trees in the Leguminosae subfamily Detarioideae, to: (1) determine size, structure, tree species composition this cluster; (2) map shape, structure groups individual Detarioideae cluster.Location Lowland rain forest southern Korup National Park, Southwest Region Cameroon.Material methods Trees permanent plots were recorded using standard plot enumer...
Uptake of several atmospheric molecules on free ice nanoparticles was investigated. Typical examples were chosen: water, methane, NO(x) species (NO, NO(2)), hydrogen halides (HCl, HBr), and volatile organic compounds (CH(3)OH, CH(3)CH(2)OH). The cross sections for pickup of these molecules on ice nanoparticles (H(2)O)(N) with the mean size of N≈260 (diameter ~2.3 nm) were measured in a molecula...
Acoustic cluster technology (ACT) is a two-component, microparticle formulation platform being developed for ultrasound-mediated drug delivery. Sonazoid microbubbles, which have a negative surface charge, are mixed with micron-sized perfluoromethylcyclopentane droplets stabilized with a positively charged surface membrane to form microbubble/microdroplet clusters. On exposure to ultrasound, the...
We demonstrated a technique to control the placement of 6 nm-diameter CdSe and 5 nm-diameter CdSe/CdZnS colloidal quantum dots (QDs) through electron-beam lithography. This QD-placement technique resulted in an average of three QDs in each cluster, and 87% of the templated sites were occupied by at least one QD. These QD clusters could be in close proximity to one another, with a minimum separa...
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