This study presents a new proposal for gemstone color classification and integrates hardware to enable gemstone color assessment based on this new system. This allows for a quantified measurement of gemstone color, providing a visual description.

The results of ultrasonic wave propagation experiments indicated that the presence of steel fibers at a 2% content increased the time of wave propagation. On the other hand, curing conditions, specimen maintenance time, and transmission path distance affected the ultrasonic wave propagation time in high-strength concrete.

Stabilizing the depth of the Towed Underwater Vehicle (TUV) under the impact of ocean waves is the first problem when building a control and monitoring system for TUV. Many strategies and control methods have been proposed in different studies, but they are not a general standard.

The removal of organic dyes from wastewater is essential to protect the ecosystem and human health. This study evaluated the ability of the ozone system combined with ultrasound to remove organic pigment disperse red 152 (DR152).

In the paper "Shock waves emitted at the collapse of a laser-induced cavitation bubble in the vicinity of a free surface", we investigated the dynamic of a cavitation bubble induced by laser ablation in liquid in the vicinity of a free surface. The observation was conducted using high-speed laser stroboscopic videography in photoelasticity mode. We showed the bubble contracted faster in the vertical direction and formed a flat bubble at the minimum contraction. At the collapse, the bubble emitted multiple shock waves. The dynamics of the bubble during contract phase and the emission of multi shock waves were discussed in details.

This research has raised the question of whether the vibration transmission at a wall junction depends on how the wall is excited (by either a sound wave or a mechanical shaker). The aim of this research is to investigate this question and hence contribute to the revision of the series of standards. Villot and Guigou-Carter (2000) have considered this problem but their equations (10) and (13) appear to be in error. This research will endeavour to derive the correct equations and r epeat Villot and Guigou Carter’s calculations.

Lecture Physics A2: Interference - PhD. Pham Tan Thi present the content a single oscillating wave, multiple waves - superposition, superposing sinusoidal waves, adding sine waves with different phases,...

Lecture Physics A2: Quantum Nature of Light (Quantum Optics) - PhD. Pham Tan Thi present the content wave characteristics, electrically charged particles and electromagnetic waves, effect on electric charges, accelerated charges (electrons, protons) produce,...

The thesis will solve the following two basic objectives: Clarifying the effect of hydrodynamic and geometric factors on the current velocity due to wave at the dike toe by using rocks; Determining the formula to calculate the maximum flow velocity at the foot of the embankment (dike toe), then select the solution to design the structure of the foot protection of the embankment in both with or without roughness structures

The set of intracavity field equations describing the evolution of intra-cavity pumping, Stokes and anti-Stokes powers of Raman laser is presented. Most attention is given to intra-cavity competition of two Raman waves, which depends on cavity properties, frequency shift and phase mismatch. The calculated results are based on Ge-doped and D2-gas-in glass fiber lasers at CW-regime and pulse-pumped regime.

Smart car deals with the smart collision avoidance between the vehicles using visible light communication. The basic concept behind this technique is that the data can be transferred through LED light by varying light intensities faster than the human eyes can perceive.

Semi-submersible drilling platforms are huge bulk structures for extracting the oil products from great depth of seas. For such bulk structures, the Morrison’s equations are no longer valid for determining the loads applied to the semi-submersible drilling platforms.

Bài nghiên cứu " Surfing the waves of globalization - Asia and financial lobalization in the context of the trilemma" sẽ dịch thuật kết hợp phần đọc hiểu để đưa ra những vấn đề mới của bộ ba chính sách cho mọi người cùng tham khảo, nghiên cứu.

The ergodic hypothesis, which assumes the independence of each cell of the ensemble from all the others, is a necessary prerequisite to attach single cell based explanations to the grand averages taken from population data. This was the prevailing view about the interpretation of cellular biology experi-ments that typically are performed on colonies of billions of cells.

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học 'Respiratory Research cung cấp cho các bạn kiến thức về ngành y đề tài: Laminin-332 alters connexin profile, dye coupling and intercellular Ca2+ waves in ciliated tracheal epithelial cells...

Embankment crest and the toe: that is limited to the scope of protection of the embankment on the shore. Roof slope: expressed as the ratio, for example 1:3. Roof more comfortable (less steep), the embankment as a protective effect, but the price will be more expensive (for large embankment surface). Structure and size of the overlay: Overlay roof design must be capable of against the effects of currents, waves, etc. Conventional coatings include removable components assembled together. Gap between them so that water inside to escape, to avoid the effects of water pressure in the soil....

Tham khảo bài thuyết trình 'bed, bank & shore bed, bank & shore protection - chapter 6', khoa học tự nhiên, công nghệ môi trường phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả