Cuprous oxide (Cu2O) and Au-Cu2O core-shell nanoparticles were successfully
synthesized using the chemical reduction method. The morphology of the
synthesized pure Cu2Oparticles can be controlled by varying the amount of
reducing agent NH2OH.HCl. Due to their similar crystal structure and relatively
small lattice mismatch Cu2O particles are nucleated and locally undergo an
epitaxial growth on the ... hiện toàn bộ
The structure of GeO2 glass is investigated via molecular dynamic simulation.
The influence of pressure to the structure of GeO2 glass is due to the change of
short-range order, network structure, domain structure and free volume regions.
The obtained results show that the structure of GeO2 was formed by a continuous
random network of basic structural units linking to each other via with
corner-sh... hiện toàn bộ
Phan Hoang Anh, Nguyen Van Phu, Le Thanh Tung, Duong Van Tan, Dao Anh Phuc, Pham Van Dai, Do Quang Loc, Bui Thanh Tung, Chu Duc Trinh
Single-cell analysis offers a more comprehensive approach to disease diagnosis
compared to conventional methods. Electrical properties at a cellular level have
been established as reliable biomarkers, enabling the identification of
variations between individual cells. In this work we introduce a machine
learning-based methodology for analyzing electrical impedance signals obtained
from a microflui... hiện toàn bộ
Measurements of the zeta potential in sandpacks saturated with monovalent
electrolytes at six different electrolyte concentrations have been reported. The
values we record are classified into two groups based on the magnitude of the
zeta potential: group 1 (samples S1 and S2) and group 2 (samples S3 and S4). The
measured zeta potential in magnitude in group 1 is much smaller than that in
group 2 a... hiện toàn bộ
In this work, we design circular lattice photonic crystal fibers using Lumerical
Mode Solution software, its hollow core filled with carbon tetrachloride.
Optical properties including effective refractive index, chromatic dispersion,
nonlinearity, and fiber loss were investigated numerically in detail based on
solving Maxwell's wave equations. The small effective mode areas of only a few
µm2, and ... hiện toàn bộ
In this work, we developed Jajte’s technique of the strong law of large numbers
to the complete convergence for randomly weighted sums of pairwise negative
quadrant dependent random variables.
This paper considers the problem of a low-velocity normal impact of a rigid
cone-shaped upon a viscoelastic plate. The contact force is defined by the
modified Hertz's contact law. Approximate solutions of the system of nonlinear
integro-differential equations for the contact force and local indentation have
been obtained.
Bài báo này trình bày phương pháp xác định độ phóng xạ của 40K, 226Ra và 232Th
trong các mẫu đất bằng cách sử dụng thiết bị quang phổ gamma với đầu dò NaI
(Tl). Độ phóng xạ của từng đồng vị được tính toán dựa trên tỷ lệ đếm sạch trong
khoảng năng lượng đặc trưng cho các đồng vị phóng xạ 40K, 226Ra và 232Th tương
ứng. Chúng tôi đã xác định được nồng độ hoạt độ của các đồng vị phóng xạ tự
nhiên 226R... hiện toàn bộ
#đánh giá #độ phóng xạ tự nhiên #mẫu đất #NaI (Tl) #quang phổ gamma #Khamkeut #Bolikhamxay #Lào