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Comparison of amino acid composition, nutritional value of sesame seed proteins in some local and imported sesame cultivars in Vietnam
Abstract. Amino acid composition of 5 local and imported sesame seed cultivars (Sesamun indicum L.) grown in Vietnam (yellow Quang Tri sesame, yellow Thua Thien Hue sesame, white Japanese sesame, black Thua Thien Hue sesame, black Thanh Hoa - Quang Tri sesame) were analyzed by derivatization with ortho-phthaladehyt (OPA) for primary amino acid an...
6 trang | Chia sẻ: thanhle95 | Ngày: 13/07/2021 | Lượt xem: 452 | Lượt tải: 0
Polyaniline/montmorillonite nanocomposites for adsorption purposes
Abstract. Nanocomposites based on polyaniline (PANI) and montmorillonite (MMT) were prepared by in-situ polymerization of aniline monomers using FeCl3 as oxidant in the presence of MMT. X-ray diffraction patterns (XRD) showed that the obtained materials were in the nanostructures. The chemical structure of PANI in nanocomposites were characteriz...
6 trang | Chia sẻ: thanhle95 | Ngày: 13/07/2021 | Lượt xem: 434 | Lượt tải: 0
Laplace transformation approach, saddle point approximation method for calculation of number and density of vibrational states
Abstract. In the paper the calculation of density of molecular vibrational states has been performed by the Laplace transformation approach, i.e reduced to the evaluation of inverse Laplace transform of partition function by the aid of saddle point approximation method: The exponential of intergrand in inverse Laplace integral is presented in the...
8 trang | Chia sẻ: thanhle95 | Ngày: 13/07/2021 | Lượt xem: 579 | Lượt tải: 0
Spectral characterization of some hydrazones derived from Isoeugenoxyacetic acid
Abstract. Eight hydrazones were synthesized from isoeugenoxyacetic acid via a three-step procedure (esterification, conversion to hydrazide, condensation with aromatic aldehydes and p-methylacetophenone). The IR, 1H NMR and 13C NMR spectra of the hydrazones were analyzed. 1H NMR and 13C NMR signals were assigned on the basis of spin-spin splitti...
7 trang | Chia sẻ: thanhle95 | Ngày: 13/07/2021 | Lượt xem: 408 | Lượt tải: 0
Một số biện pháp sư phạm nhằm phát triển năng lực dạy học cho sinh viên sư phạm toán trường Đại học Tây Bắc
1. Đặt vấn đề Chiều ngày 27/12/2018, Bộ Giáo dục và Đào tạo đã công bố Chương trình giáo dục phổ thông mới, gồm Chương trình tổng thể và 27 chương trình môn học, hoạt động giáo dục. Chương trình giáo dục phổ thông mới được xây dựng theo mô hình phát triển năng lực, thông qua những kiến thức cơ bản, thiết thực, hiện đại và các phương pháp tí...
10 trang | Chia sẻ: thanhle95 | Ngày: 13/07/2021 | Lượt xem: 552 | Lượt tải: 0
Building an elliptic curve cryptography to encode and decode Vietnamese texts
Abstract: This article presents building an Elliptic curve cryptography and using it to encode and decode Vietnamese text. Here we have illustrated the prime number p = 151 in the future, which will use a large prime number. We consider an elliptic curve with a total score of 172 points. Encode and decode with standard Vietnamese text and combin...
8 trang | Chia sẻ: thanhle95 | Ngày: 13/07/2021 | Lượt xem: 464 | Lượt tải: 0
Numerical result for variational inequality problems with equality constraint
Abstract. In this paper we present some numerical result for illustrating a theoretical results obtained in our investigation in the field of variational inequality problems with constraint in the form of operator equation involving monotone operator. Keywords: Monotone operator, Fr²chet differentiable, weakly lower semicontinuous proper convex ...
6 trang | Chia sẻ: thanhle95 | Ngày: 13/07/2021 | Lượt xem: 560 | Lượt tải: 0
Longest cycles and restgraph in maximalnonhamitonian graphs
Abstract. A graph is called a maximalnonhamiltonian graph if it is nonhamiltonian and will be hamiltonian by adding any new edge. This paper presents a conjecture that if C is a longest cycle in a maximalnonhamiltonian graph G then G−C is a complete graph and shows that the conjecture is true for some classes of graphs.
5 trang | Chia sẻ: thanhle95 | Ngày: 13/07/2021 | Lượt xem: 382 | Lượt tải: 0
Spectral properties of the operator pencils generated by second order elliptic boundary-Value problems depending on parameter in an angle
Abstract. In this paper we consider spectral properties of the operator pencils generated by boundary-value problems for second order elliptic equation depending parameter in a plane angle. We receive explicit formula for the eigenvalues and the eigenvectors of the operator pencil, the multiplicity of the eigenvalues, and the differentiability o...
8 trang | Chia sẻ: thanhle95 | Ngày: 13/07/2021 | Lượt xem: 382 | Lượt tải: 0
Cauchy-Newmann problem for schrodinger equation regularity of weak solution of Cauchy-Newmann problem for schrodinger equation in infinite nonsmooth cylinders
1. Introduction The Schr odinger equation received a great deal of attention from mathematicians, in particular because of its applications to quantum mechanics and optics. Indeed, some simplified models lead to certain Schr odinger equation, see [1,5] for example. In this paper we consider the Cauchy-Newmann problem for classical Schr oding...
10 trang | Chia sẻ: thanhle95 | Ngày: 13/07/2021 | Lượt xem: 435 | Lượt tải: 0