We obtain optimal continuity in Sobolev spaces for the Fourier integral operators associated to singular canonical relations, when one of the two projections is a Whitney fold. The regularity depends on the type, k, of the other projection from the canonical relation (k = 1 for a Whitney fold). We prove that one loses (4+ 2 k ) of a derivative in the regularity properties. The proof is based on...

In this study, the development of imidacloprid and acetamiprid resistance in Myzus persicae populations relationship between neonicotinoid esterase enzyme were investigated seven which is collected from greenhouse pepper production areas 2018. order to determine ratios aphid against insecticides, 1 control 6 doses used. Each insecticide dose was used 3 replicates 25 adult female individuals eac...

Wildfires can change ecosystems by altering solutes in streams. We examined major cations streams draining a chaparral-dominated watershed the Santa Ynez Mountains (California, USA) following wildfire that burned 75 km2 from July 8 to October 5, 2017. identified changes solute concentrations, and postulated relation between these ash leached rainwater wildfire. Collectively, K+ samples exceeded...

The beta-subunit of the voltage-sensitive K(+) (K(v)) channels belongs to the aldo-keto reductase superfamily, and the crystal structure of K(v)beta2 shows NADP bound in its active site. Here we report that K(v)beta2 displays a high affinity for NADPH (K(d) = 0.1 micrometer) and NADP(+) (K(d) = 0.3 micrometer), as determined by fluorometric titrations of the recombinant protein. The K(v)beta2 a...

The experiments described examine single channel currents recorded through Torpedo acetylcholine receptor channels stably expressed by a mouse fibroblast cell line. Closed-duration histograms were constructed from currents elicited by 0.5-300 microM acetylcholine (ACh). The concentration dependence of closed durations is well described by a four-state linear scheme with the addition of open-cha...

BACKGROUND In industries lipolytic reactions occur in insensitive conditions such as high temperature thus novel stout esterases with unique properties are attracts to the industrial application. Protein engineering is the tool to obtain desirable characters of enzymes. A novel esterase gene was isolated from South China Sea and subjected to a random mutagenesis and site directed mutagenesis fo...

We study a sparse Sachdev-Ye-Kitaev (SYK) model with $N$ Majoranas where only $\ensuremath{\sim}kN$ independent matrix elements are nonzero. identify minimum $k\ensuremath{\gtrsim}1$ for quantum chaos to occur by level statistics analysis. The spectral density in this region, and larger $k$, is still given the Schwarzian prediction of dense SYK model, though renormalized parameters. Similar res...

Banjir lahar dingin merupakan sekumpulan yang dimuntahkan oleh gunung berapi dan sampai ke permukaan lebih rendah dengan bantuan atau dorongan dari air hujan. Akibatnya, hujan membawa serta material-material vulkanik ini akan menerjang lahan berada di bawahnya ataupun pemukiman penduduk banyaknya kerusakan atapun dampak-dampak lain dihasilkan banjir ini. Faktor menyebabkan adalah intensitas cur...

Operads were originally defined as V-operads, that is, enriched in a symmetric or braided monoidal category V. The symmetry or braiding in V is required in order to describe the associativity axiom the operads must obey, as well as the associativity that must be a property of the action of an operad on any of its algebras. A sequence of categorical types that filter the category of monoidal cat...