The cultivated/domesticated peach (Prunus persica var. persica; Rosaceae, subgenus Amygdalus; synonym: Amygdalus persica) originated in China, but its wild ancestor, as well as where, when, and under what circumstances the peach was domesticated, is poorly known. Five populations of archaeological peach stones recovered from Zhejiang Province, China, document peach use and evolution beginning c...

5-Hexadecenoic acid can be used to produce a semichemical method to control the disease-carrying mosquito Culex quinquefasciatus. This unusual fatty acid is produced in the seed of Kochia scoparia. We have isolated two acyl-acyl carrier protein desaturases from this species and expressed them in Escherichia coli to facilitate functional characterisation.

Antioxidant capabilities of scoparone, the component of Artemisia scoparia and other medicinal plants, against lipid peroxidation induced by ultraviolet radiation or Fenton reaction have been analyzed. Lipid peroxidation was monitored by measuring the absorption spectra of the conjugated dienes and quantified by the Klein oxidation index. Obtained results imply that scoparone is a very efficien...

We investigate the possibility of forming a tilted smectic liquid crystal phase by suitably positioning two permanent dipoles in a rodlike molecule. We show, using Monte Carlo simulations, that a tilted smectic is formed from ellipsoidal Gay-Berne particles with two off-center outboard dipoles when these are directed along or at 60 degrees from the rod axis where they are located, but not when ...

abstract this paper presents a quantitative account of vegetation–environmental factor relationships in arid rangelands. vegetation cover was recorded using braun-blanquet combined abundance-cover scale in each quadrat. within each quadrat, one profile was dug and soil samples being taken at 0-20cm and 20-100cm depths. under study physical-chemical characteristics included texture, lime, organi...

background and objectives: alzheimer's disease (ad) is an age dependent disorder. ad is associated with decrease of brain acetylcholine level. nowadays, one of the methods for progression inhibition of ad is using acetylcholinesterase inhibitors. rosaceae is a large plant family. different biological effects of some species of this family have been reported. the aim of the present study was to ...

Two psammophile-dominated Artemisia semi-shrubs (A. wudanica and A. halodendron) and two annual Artemisia forbs (A. sieversiana and A. scoparia) bear significant ecological functions in Horqin Sandy Land, but systematical information on their achenes’ germination is very limited. A set of studies were conducted to evaluate seed germination responses to storage periods and methods, different tem...

We calculate the one-body temperature Green's (Matsubara) function of the unitary Fermi gas via quantum Monte Carlo, and extract the spectral weight function A(p,omega) using the methods of maximum entropy and singular value decomposition. From A(p,omega) we determine the quasiparticle spectrum, which can be accurately parametrized by three functions of temperature: an effective mass m{*}, a me...