Light source

The main contribution of this paper is to show a new AC/DC converter based on the rearrangement of the flyback converter. The proposed circuit only manages part of the energy and the rest is delivered directly from the source to the load. Therefore, with the new topology, the efficiency is increased, and the stress of the components is reduced. The rearrangement consist of the secondary of the flyback is placed in parallel with the load, and this arrangement is connected in series with the primary side and the rectified voltage source.

16p 63696369 20-06-2024 3 1   Download

Part 1 book "Electrician's pocket manual" includes content: Special equipment, troubleshooting, troubleshooting electric motors, alarm systems, lamps and lighting systems, electric motors, power sources, wires and wiring.

210p dianmotminh01 20-05-2024 3 1   Download

Trade has played a crucial role in economic growth and enhancing Vietnam’s global competitiveness through diversifying the supply source and expanding consumer markets. However, recently, Vietnam’s import-export structure has shown signs of instability and dependence on external factors. Therefore, it is necessary to reassess the current trade situation in Vietnam.

5p longtimenosee09 08-04-2024 3 1   Download

Security features present on Nepali passport are examined with the help of Video Spectral Comparator. Mainly examination is carried out with application ultra-violet light, normal light, oblique light and transmitted light. We obtain different types of security features including florescence, ghost image, binding thread, optical fiber, punched number, barcode, micro-printing, watermark, emboss etc.

6p visergey 02-04-2024 5 0   Download

Part 3 book "Physics for scientists and engineers" by authors Raymond A. Serway and John W. Jewett includes content: Sources of the magnetic field, Faraday’s law, inductance, alternating current circuits, electromagnetic waves, the nature of light and the laws of geometric optics, image formation, interference of light waves, diffraction patterns and polarization, relativity.

448p muasambanhan10 03-04-2024 4 1   Download

Ebook "Modelling the dissociation dynamics and threshold photoelectron spectra of small halogenated molecules" outlines two related experimental techniques, threshold photoelectron spectroscopy and threshold photoelectron photoion coincidence techniques, which are utilised to investigate small halogenated molecules. All the experiments were conducted at the vacuum ultraviolet beamline of the Swiss Light Source, a synchrotron photon source, which has the advantage over popular laser photon-sources of extreme ease of tunability.

184p tudohanhtau1006 29-03-2024 2 1   Download

Ebook "Laser photodissociation and spectroscopy of mass-separated biomolecular ions (Lecture notes in Chemistry, Volume 83)" is to introduce students and researchers to exciting developments in laser-based photodissociation of trapped biomolecular ions inside mass spectrometers. The convergence of mass spectrometry (MS) and lasers in fact draws from a rich history in mass spectroscopy in the realm of physical chemistry and chemical physics.

128p coduathanh1122 27-03-2024 3 1   Download

Ebook "Radiometry in modern scientific experiments" is provided with information about methods of calibration of light sources and photodetectors as well as responsiveness of spectral instruments ranging from near infrared to vacuum UV spectral, 1200 – 100 nm, and radiation intensities of up to several quanta per second in absolute and arbitrary units. The author describes for the first time original methods of measurements they created and draws upon over 40 years of experience in working with light sources and detectors to provide accurate and precise measurements.

211p manmanthanhla0201 26-02-2024 1 1   Download

Ebook Basic sciences in ophthalmology: Part 1 includes content: The interaction between light and matter, light sources, examinations with light, ultrasound diagnostics, further imaging procedures, interventions with laser light,… and other contents. Invite you to consult the details.

127p longtimenosee03 01-02-2024 4 0   Download

Based on historical sources, survey materials, people’s memories, and research of previous scholars, this article shed a light on the belief of the tutelary deity in Hai Phong in the pre-innovation period (1986) on the basic aspects including beliefs and objects of worship, place of worship, and the rituals practices of the community.

31p visystrom 22-11-2023 8 3   Download

Part 1 of ebook "Learning Three.js: The JavaScript 3D library for WebGL - Create and animate stunning 3D graphics using the open source Three.js JavaScript library" provides readers with contents including: creating your first 3D scene with Three.js; working with the basic components that make up a Three.js scene; working with the different light sources available in Three.js; working with the Three.js materials; learning to work with geometries; using advanced geometries and binary operations;...

195p tieulangtran 28-09-2023 6 4   Download

Ebook "New bathroom ideas that work" features over 350 ideas covering a range of bathroom styles and sizes. All aspects are considered: choices for fixtures, lighting, and cabinetry; finishes for floors, walls, and ceilings, budget-conscious options for tubs, showers, and sinks; and ideas for heating and cooling, ventilation, storage, and finishing touches. New Bathroom Ideas that Work also includes the latest information and design options for accessibility and water conservation.

226p hanlinhchi 29-08-2023 6 4   Download

Continued part 1, part 2 of ebook "Manager’s guide to operations management" provides readers with contents including: managing projects - creating the light at the end of the tunnel; forecasting, planning, and scheduling - taking the guesswork out of guesswork; sourcing, procurement, logistics, and outsourcing - find it, get it, and keep it!; inventory management - the good, the bad, and the ugly; operations technology - paving the way operations should work;...

143p hanlinhchi 29-08-2023 9 5   Download

Photo-thermal responsive actuators are attracting increasing attention due to their good light source and wireless remote control. The potential of this photo-thermal responsive film actuator to be used in a breathable fabric, mechanical gripper, and bionics robot were also demonstrated.

10p viberbers 09-08-2023 6 5   Download

This paper is an attempt to survey the benefits of a well-designed photoreactor containing just 6 ultraviolet (UV) high power light emitting diodes (HPLEDs); the power and wavelength of each UV HPLED are 1 W and 365 nm, respectively, the latter being an efficient source for photocatalytic studies.

6p viberbers 09-08-2023 7 3   Download

In trying to explain the present accelerated expansion of the universe in the light of a five-dimensional Brans-Dicke theory, it is found that the fifth dimension itself here acts as a source of dark energy.

9p vispiderman 15-06-2023 3 3   Download

In this paper, we propose a light-weight model to give the capability of transferring objects between applications to be implemented in object-oriented programming languages. To realize this model, we apply certain design patterns in designing principal classes to transfer objects from an application to another. A prototype implementation of this project has been developed in C++ as open source.

12p vicaptainmarvel 21-04-2023 11 3   Download

In addition, the effect of La1-xSrxCoO3 powders on the photocatalytic degradation of methylene blue and CO2 reduction reaction under UV light source was also investigated. The results showed a maximum photocatalytic degradation of methylene blue 30 ppm could be achieved with a degradation degree of 11.32% by La0.6Sr0.4CoO3 synthesized at 850oC for 4h (LSC64-850) in UV light for 150 min.

4p vijaguar 16-11-2022 11 1   Download

The novel 2D single-shot comb-based interferometer introduces a massive potential for inline inspection in the industrial chain. The system's advantages are based on a novel optical setup, which combines a new customized infrared pseudo comb light source with a reflected blaze grating acting as a spatial phase modulator. The optical comb source with multiple comb order introduces the system's fantastic ability to extend the measurement range far from the traditional interferometers.

8p vimelindagates 18-07-2022 4 2   Download

The thesis aims at examining the metaphors of season in English and Vietnamese songs in the light of Conceptual Metaphor Theory (CMT). Subsequently, a comparison is made to find out the similarities and differences between the conceptual metaphors of season in English and Vietnamese song lyrics when SEASON is treated as a target domain as well as a source domain. Simultaneously, several explanations are given as causes for these similarities and differences.

230p caphesuadathemtieu 02-03-2022 17 3   Download