Genus two

The genus Cybister Curtis, 1827 is reviewed for the fauna of Vietnam. The 5 species are diagnosed with illustrated habitus, leg, and male genitalia. Additional measurement data, and an updated identification key for all species are provided. Two species Cybister convexus Sharp, 1882, and Cybister danxiaensis Zhuo-Yin Jiang, 2023, are recorded for the first time in Vietnam.

20p viling 27-09-2024 4 2   Download

In order to explore the importance of the Antheroporum genus in pharmaceutical applications, two bioactivities of A. harmandii plant extracts have been evaluated in this study. Antimicrobial and antioxidant activities of A. harmandii extracts will provide evidences for further chemical composition studies to detect new bioactive compounds from this species.

9p dianmotminh02 03-05-2024 6 2   Download

With the aim of searching for bioactive compounds from plants of the genus Garcinia in order to contribute to the scientific basis for further research in the pharmaceutical field, the thesis focuses on studying two species of the genus Garcinia is Garcinia cowa and Garcinia hanburyi.

27p capheviahe27 23-02-2021 12 4   Download

The genus Litsea Lam. (Lauraceae) and Lepisanthes Blume (Sapindaceae) are wildly distributed in Vietnam, especially in the mountainous areas. The reports in the literatures indicated that these two genus contain many constituents with interesting structures and potential biological activities. In order to find interesting substances for development of new pharmaceutical ingredients or functional food products we would like to conduct the resarch thesis ‘‘Study on Chemical constituents and biological activities of Litsea glutinosa (Lour.) Rob. (Lauraceae) and Lepisanthes rubiginosa (Roxb.

26p xacxuoc4321 11-07-2019 29 6   Download

The structure of the O-polysaccharide of the lipopolysaccharide from a diarrheal strain isolated in Bangladesh was studied with sugar, and methylation analysis, NMR spectroscopy, mass spectrometry and partial acid hydrolysis. The strain was first designated as Hafnia alvei, but later found to be a possible new species in the genus Escherichia. Two different polysaccharides were detected, a major and a minor one. The structure of the major polysaccharide is given below, while the structure of the minor one was not investigated. ...

7p system191 01-06-2013 35 6   Download

Annals of Mathematics By Curtis T. McMullen* .Annals of Mathematics, 165 (2007), 397–456 Dynamics of SL2(R) over moduli space in genus two By Curtis T. McMullen* Abstract This paper classifies orbit closures and invariant measures for the natural action of SL2 (R) on ΩM2 , the bundle of holomorphic 1-forms over the moduli space of Riemann surfaces of genus two. Contents 1. Introduction 2. Dynamics and Lie groups 3. Riemann surfaces and holomorphic 1-forms 4. Abelian varieties with real multiplication 5. Recognizing eigenforms 6. Algebraic sums of 1-forms 7. Connected sums of 1-forms 8.

61p noel_noel 17-01-2013 54 6   Download

We prove that any genus-2 Lefschetz fibration without reducible fibers and with “transitive monodromy” is holomorphic. The latter condition comprises all cases where the number of singular fibers µ ∈ 10N is not congruent to 0 modulo 40. This proves a conjecture of the authors in [SiTi1]. An auxiliary statement of independent interest is the holomorphicity of symplectic surfaces in S 2 -bundles over S 2 , of relative degree ≤ 7 over the base, and of symplectic surfaces in CP2 of degree ≤ 17. ...

63p noel_noel 17-01-2013 47 5   Download

We study the integral points on surfaces by means of a new method, relying on the Schmidt Subspace Theorem. This method was recently introduced in [CZ] for the case of curves, leading to a new proof of Siegel’s celebrated theorem that any affine algebraic curve defined over a number field has only finitely many S-integral points, unless it has genus zero and not more than two points at infinity. Here, under certain conditions involving the intersection matrix of the divisors at infinity, we shall conclude that the integral points on a surface all lie on a curve. We shall...

23p tuanloccuoi 04-01-2013 53 6   Download

This paper is the first in a series where we describe the space of all embedded minimal surfaces of fixed genus in a fixed (but arbitrary) closed Riemannian 3-manifold. The key for understanding such surfaces is to understand the local structure in a ball and in particular the structure of an embedded minimal disk in a ball in R3 (with the flat metric). This study is undertaken here and completed in [CM6]. These local results are then applied in [CM7] where we describe the general structure of fixed genus surfaces in 3-manifolds. There are two local models for...

43p tuanloccuoi 04-01-2013 67 7   Download

Arisaema omkoiense Gusman and A. ramulosum Anderw. have been described as new record for Flora of Vietnam. Among them, Arisaema omkoiense was found in Chieng Mai (Thailand) recently by Gusman, now recorded in Centre Vietnam (Quang Tri and Kontum prov.). The other one, A. ramulosum Anderw. an endemic of Indonesia for longtime, has been found in Northern Vietnam (Cao Bang and Bac Can prov.).

5p tuanloc_muido 11-12-2012 48 2   Download

Macadamia trees (often called the tree people Mac-ca) is one of the crops of high economic value. Macadamia is the common name for nine species of the genus Macadamia, open cross Affairs (Proteaceae) in which two species have commercial value as M. integrifolia Maiden & Betche and M.tetraphylla. L. Johnson. Both species were grown in the eastern coastal regions - South and South East Queensland - Northern New Wales of Australia.

163p xau_la 10-02-2012 76 10   Download

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Selection of allozyme genotypes of two species of marine gastropods (genus Littorina) in experiments of environmental stress by nonionic detergent and crude oil-surfactant mixtures

0p toshiba20 12-11-2011 49 4   Download