Log in

Relevant bibliographies by topics / Pulsing light / Journal articles

To see the other types of publications on this topic, follow the link: Pulsing light.

Journal articles on the topic 'Pulsing light'

Author: Grafiati

Published: 25 June 2021

Last updated: 29 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Pulsing light.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Lunn, Ryan, Patrice E. Baumhardt, Bradley F. Blackwell, Jean Paul Freyssinier, and Esteban Fernández-Juricic. "Light wavelength and pulsing frequency affect avoidance responses of Canada geese." PeerJ 11 (November 21, 2023): e16379. http://dx.doi.org/10.7717/peerj.16379.

Full text

Abstract:

Collisions between birds and aircraft cause bird mortality, economic damage, and aviation safety hazards. One proposed solution to increasing the distance at which birds detect and move away from an approaching aircraft, ultimately mitigating the probability of collision, is through onboard lighting systems. Lights in vehicles have been shown to lead to earlier reactions in some bird species but they could also generate attraction, potentially increasing the probability of collision. Using information on the visual system of the Canada goose (Branta canadensis), we developed light stimuli of h

APA, Harvard, Vancouver, ISO, and other styles

2

Hashmi, Javad T., Ying-Ying Huang, Sulbha K. Sharma, et al. "Effect of pulsing in low-level light therapy." Lasers in Surgery and Medicine 42, no. 6 (2010): 450–66. http://dx.doi.org/10.1002/lsm.20950.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Kamuri, Mohd, Zurina Zainal Abidin, Mohd Yaacob, Mohd Hamidon, Nurul Md Yunus, and Suryani Kamarudin. "Separation and Detection of Escherichia coli and Saccharomyces cerevisiae Using a Microfluidic Device Integrated with an Optical Fibre." Biosensors 9, no. 1 (2019): 40. http://dx.doi.org/10.3390/bios9010040.

Full text

Abstract:

This paper describes the development of an integrated system using a dry film resistant (DFR) microfluidic channel consisting of pulsed field dielectrophoretic field-flow-fractionation (DEP-FFF) separation and optical detection. The prototype chip employs the pulse DEP-FFF concept to separate the cells (Escherichia coli and Saccharomyces cerevisiae) from a continuous flow, and the rate of release of the cells was measured. The separation experiments were conducted by changing the pulsing time over a pulsing time range of 2–24 s and a flow rate range of 1.2–9.6 μ L min − 1 . The frequency and v

APA, Harvard, Vancouver, ISO, and other styles

4

Chuntul, A. V., and A. P. Kozlovsky. "PULSING LIGHT STIMULATION IN STATE CORRECTION OF AVIATION PERSONNEL." Aerospace and Environmental Medicine 52, no. 5 (2018): 47–52. http://dx.doi.org/10.21687/0233-528x-2018-52-5-47-52.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Forestini, M., and C. Charbonnel. "Nucleosynthesis of light elements inside thermally pulsing AGB stars." Astronomy and Astrophysics Supplement Series 123, no. 2 (1997): 241–72. http://dx.doi.org/10.1051/aas:1997348.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Barolet, Daniel, Pascale Duplay, Hélène Jacomy, and Mathieu Auclair. "Importance of pulsing illumination parameters in low-level-light therapy." Journal of Biomedical Optics 15, no. 4 (2010): 048005. http://dx.doi.org/10.1117/1.3477186.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Uriri, Solomon Akpore, Kingsley Ngozi Nwakaji, Ochuko J. Abeokuta, and Ferdinand Nnamdi Okoh. "Dependence of Luminescence Lifetimes on Radiation Absorbed Dose from Quartz using a Time-Resolved Based Pulsing System." Nigerian Journal of Theoretical and Environmental Physics 3, no. 1 (2025): 46–51. https://doi.org/10.62292/njtep.v3i1.2025.68.

Full text

Abstract:

Time-resolved optical stimulation of luminescence is an important technique that is well established for the study of dosimetric materials including quartz, carbon doped aluminium oxide, feldspar, etc. These materials, particularly quartz, Is a material of interest in dosimetry. Time resolved optical stimulation separate in time the stimulation and emission of luminescence. The luminescence is obtained from the quartz sample using a brief light pulse and the emission of the luminescence is monitored. The aim is to investigate the influence of radiation dose on luminescence lifetimes in quartz

APA, Harvard, Vancouver, ISO, and other styles

8

Eilertsen, Hans Chr, Jo Strømholt, John-Steinar Bergum, Gunilla Kristina Eriksen, and Richard Ingebrigtsen. "Mass Cultivation of Microalgae: II. A Large Species Pulsing Blue Light Concept." BioTech 12, no. 2 (2023): 40. http://dx.doi.org/10.3390/biotech12020040.

Full text

Abstract:

If mass cultivation of photoautotrophic microalgae is to gain momentum and find its place in the new “green future”, exceptional optimizations to reduce production costs must be implemented. Issues related to illumination should therefore constitute the main focus, since it is the availability of photons in time and space that drives synthesis of biomass. Further, artificial illumination (e.g., LEDs) is needed to transport enough photons into dense algae cultures contained in large photobioreactors. In the present research project, we employed short-term O2 production and 7-day batch cultivati

APA, Harvard, Vancouver, ISO, and other styles

9

Lee, Jong-Sung, Dae-Hee Lee, Sung-Jin Kim, and Chang-Heon Oh. "An LED-based visible light communication system for multicast." Indonesian Journal of Electrical Engineering and Computer Science 13, no. 1 (2019): 265–71. https://doi.org/10.11591/ijeecs.v13.i1.pp265-271.

Full text

Abstract:

Visible Light Communication is a communication method that transmits data through light by pulsing an LED at high speed, performing broadcast communication for all devices existing in its coverage. Broadcast-based Visible Light Communication is limited to application to Internet of Things services, where various applications exist, although all receivers can communicate within the range of light sources. Therefore, this paper proposes an LED based Visible Light Communication system for multicast. The proposed system performs individual multicast by participating in communication only with rece

APA, Harvard, Vancouver, ISO, and other styles

10

Ngamkham, Pattaraporn, Varit Srilaong, Chalermchai Wongs-Aree, and Mantana Buanong. "Application of Cytokinin under Modified Atmosphere (MA) Delays Yellowing and Prolongs the Vase Life of Davallia solida (G. Forst.) Sw. Leaves." Agriculture 13, no. 2 (2023): 463. http://dx.doi.org/10.3390/agriculture13020463.

Full text

Abstract:

Cut leaves of Davallia solida are widely used in bouquet greenery. However, the leaves wilt and yellow after seven days. Postharvest applications of exogenous cytokinins (CKs), a plant growth regulator (PGR), preventing senescence in many green leafy plants, were studied by pulsing cut D. solida leaves with 6-benzylamiopurine (BA) at a concentration of 100 ppm, or thidiazuron (TDZ) at a concentration of 10 μM for 24 h, compared with distilled water as a control, and then placing the ferns in a controlled room (21 + 2 °C, 70–80% relative humidity (RH), under cool-white fluorescent lights for 12

APA, Harvard, Vancouver, ISO, and other styles

11

Begin, I., B. Bhatia, K. Rao, et al. "28PREGNANCIES RESULTED FROM GOAT NT EMBRYOS PRODUCED BY FUSING COUPLETS IN THE PRESENCE OF LECTIN." Reproduction, Fertility and Development 16, no. 2 (2004): 136. http://dx.doi.org/10.1071/rdv16n1ab28.

Full text

Abstract:

The procedure of nuclear transfer (NT) using somatic cells remains inefficient partly due to low fusion rates between donor cells and recipient ooplasm. Lectin is a glycoprotein which specifically binds to carbohydrates to induce a tight contact of membrane to membrane (Booth et al., 2001 Cloning and Stem Cells, 3, 139–159). The purpose of this study was to examine the fusion rates and developmental competence of NT embryos following pre-incubation of couplets in medium containing lectin prior to electrical pulsing. Oocytes were collected by laparoscopic ovum pick-up from hormonally primed goa

APA, Harvard, Vancouver, ISO, and other styles

12

Lee, Jong-Sung, Dae-Hee Lee, Sung-Jin Kim, and Chang-Heon Oh. "An LED-based visible light communication system for multicast." Indonesian Journal of Electrical Engineering and Computer Science 13, no. 1 (2019): 265. http://dx.doi.org/10.11591/ijeecs.v13.i1.pp265-271.

Full text

Abstract:

<p>Visible Light Communication is a communication method that transmits data through light by pulsing an LED at high speed, performing broadcast communication for all devices existing in its coverage. Broadcast-based Visible Light Communication is limited to application to Internet of Things services, where various applications exist, although all receivers can communicate within the range of light sources. Therefore, this paper proposes an LED based Visible Light Communication system for multicast. The proposed system performs individual multicast by participating in communication only

APA, Harvard, Vancouver, ISO, and other styles

13

Corbet, R. H. D., M. J. Coe, K. E. McGowan, et al. "Properties of X-ray binaries in the Magellanic Clouds from RXTE and Chandra observations." Proceedings of the International Astronomical Union 4, S256 (2008): 361–66. http://dx.doi.org/10.1017/s1743921308028718.

Full text

Abstract:

AbstractThe X-ray binary population of the SMC is very different from that of the Milky Way consisting, with one exception, entirely of transient pulsating Be/neutron star binaries. We have now been monitoring these SMC X-ray pulsars for over 10 years using the Rossi X-ray Timing Explorer with observations typically every week. The RXTE observations have been complemented with surveys made using the Chandra observatory. The RXTE observations are non-imaging but enable detailed studies of pulsing sources. In contrast, Chandra observations can provide precise source locations and detections of s

APA, Harvard, Vancouver, ISO, and other styles

14

Srivastava, Vishal, Satendra Kumar, Sunil Malik, Mukesh Kumar, Shishu Pal Singh, and Bhim Singh. "Influence of Different Pulsing Solutions on Postharvest Life of Tuberose (Polianthes tuberosa L.) cv. Prajwal." International Journal of Environment and Climate Change 13, no. 11 (2023): 2642–53. http://dx.doi.org/10.9734/ijecc/2023/v13i113433.

Full text

Abstract:

Tuberose flower (Polianthes tuberosa L.) is a perennial and bulbous flowering plant, related to the Amaryllidaceae family and now it is placed in family Agavaceae. The investigation entitled “Influence of different pulsing solutions on postharvest life of tuberose (Polianthes tuberosa L.) cv. Prajwal” was carried out at the experimental farm and laboratory of Department of Floriculture and Landscape Architecture, College of Horticulture, SVPUAT, Meerut during the year of 2021-22 & 2022-23. Experiment was laid out in Completely Randomized Design with 10 treatments and 3 replications. In the

APA, Harvard, Vancouver, ISO, and other styles

15

Mous, D. J. W., J. Visser, and R. G. Haitsma. "A nanosecond pulsing system for MeV light ions using a 2 MV TandetronTM." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 219-220 (June 2004): 490–93. http://dx.doi.org/10.1016/j.nimb.2004.01.108.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Windisch, Michael, Felix A. Himmelstoss, Monica Leba, Olimpiu Stoicuta, and Helmut L. Votzi. "Combined Light and Data Driving Stages without Capacitors for Energy Transformation." Electricity 5, no. 2 (2024): 313–33. http://dx.doi.org/10.3390/electricity5020016.

Full text

Abstract:

Three LED drivers which can be used for illumination, but whose main task is the transmission of information (data) via the light of the LEDs, are explored in this paper. The converter circuits need no capacitors for the energy transformation and avoid an inrush current. The lack of necessity of electrolytic capacitors reduces cost and space. Dimming the illumination is also easy to achieve. The control concept of the converters and the generation of pulsing of the LEDs for transmitting the information (data) are explained. The converters can also be expanded to more stages to drive more LEDs

APA, Harvard, Vancouver, ISO, and other styles

17

Uriri, Solomon Akpore, Sunday Edewor Unuafe, and Sandra Malumi. "TEMPERATURE DEPENDENCE OF LUMINESCENCE LIFETIMES OF A-AL2O3:C USING TIME-RESOLVED OPTICAL STIMULATION." FUDMA JOURNAL OF SCIENCES 9, no. 3 (2025): 189–93. https://doi.org/10.33003/fjs-2025-0903-3232.

Full text

Abstract:

This study reported the performance of a newly developed time-resolved pulsing system by investigating the components of time-resolved optically stimulated luminescence (TR-OSL) signal from carbon-doped aluminium oxide, -Al2O3:C, a material of interest in dosimetry. The study demonstrates time-resolved optical stimulation (TR-OSL) measurements under a brief light-pulse LEDs stimulation. TR-OSL is a technique that separates in time the stimulation and emission of luminescence. In this work, we report the influence of measurement temperature on luminescence lifetimes in -Al2O3:C obtained using a

APA, Harvard, Vancouver, ISO, and other styles

18

Bird, Jonathan C., and Marc H. Pinsonneault. "A BOUND ON THE LIGHT EMITTED DURING THE THERMALLY PULSING ASYMPTOTIC GIANT BRANCH PHASE." Astrophysical Journal 733, no. 2 (2011): 81. http://dx.doi.org/10.1088/0004-637x/733/2/81.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Kaladchibachi, Sevag, David C. Negelspach, Jamie M. Zeitzer, and Fabian Fernandez. "Optimization of circadian responses with shorter and shorter millisecond flashes." Biology Letters 15, no. 8 (2019): 20190371. http://dx.doi.org/10.1098/rsbl.2019.0371.

Full text

Abstract:

Recent work suggests that the circadian pacemaker responds optimally to millisecond flashes of light, not continuous light exposure as has been historically believed. It is unclear whether these responses are influenced by the physical characteristics of the pulsing. In the present study, Drosophila ( n = 2199) were stimulated with 8, 16 or 120 ms flashes. For each duration, the energy content of the exposure was systematically varied by changing the pulse irradiance and the number of stimuli delivered over a fixed 15 min administration window (64 protocols surveyed in all). Results showed tha

APA, Harvard, Vancouver, ISO, and other styles

20

Sajadian, Sedighe, and Richard Ignace. "Microlensing of radially pulsating stars." Monthly Notices of the Royal Astronomical Society 494, no. 2 (2020): 1735–43. http://dx.doi.org/10.1093/mnras/staa837.

Full text

Abstract:

ABSTRACT In this paper, we study the microlensing of radially pulsating stars. It is possible to discern and characterize the properties of distant, faint pulsating stars using high-cadence microlensing observations. By combining the stellar variability period with microlensing, we can obtain the source distance, type and radius, and we can better determine the lens parameters. Considering the variations in the radius and surface temperature of radially pulsating stars periodically, their microlensing light curves can be obtained by multiplying the magnification factor with a variable finite s

APA, Harvard, Vancouver, ISO, and other styles

21

Rahvalov, V., D. Spoiala, and V. Prilepov. "The Effect of the Impulse IR Laser Radiation Upon the Mechanical Properties of Thick Films of C60." Modern Physics Letters B 17, no. 10n12 (2003): 697–700. http://dx.doi.org/10.1142/s021798490300572x.

Full text

Abstract:

The study of mechanical properties of crystals under exterior factors gives important information on the structure in the body of a crystal. So, for example, exterior magnetic field ~ 1–10 T brings about change in the plastic properties in dielectric crystals and polymers. The influence of pulsing magnetic field more than 10 ΔH on the change of a microhardness monocrystal C60 is also revealed. In the present work the influence of another type of exterior effect in the form of pulsing laser irradiation upon mechanical parameters is studied. The mechanical parameters, the microhardness and acous

APA, Harvard, Vancouver, ISO, and other styles

22

Starovoytov, Artem, Jung Choi, and H. Sebastian Seung. "Light-Directed Electrical Stimulation of Neurons Cultured on Silicon Wafers." Journal of Neurophysiology 93, no. 2 (2005): 1090–98. http://dx.doi.org/10.1152/jn.00836.2004.

Full text

Abstract:

Dissociated neurons cultured in vitro can serve as a model system for studying the dynamics of neural networks. Such studies depend on techniques for stimulating patterns of neural activity. We show a technique for extracellular stimulation of dissociated neurons cultured on silicon wafers. When the silicon surface is reverse biased, electrical current can be generated near any neuron by pulsing a laser. Complex spatiotemporal stimulation patterns can be produced by directing a single beam with an acousto-optic deflector. The technique can generate a stimulating current at any location in the

APA, Harvard, Vancouver, ISO, and other styles

23

Doğaner, Saygın Koray. "THE NARRATIONAL ROLE OF LIGHTING DESIGN IN THE LIGHTS OF THE DARK CITY." Turkish Online Journal of Design Art and Communication 15, no. 3 (2025): 1136–61. https://doi.org/10.7456/tojdac.1674124.

Full text

Abstract:

This study focuses on the narrative role of lighting design in the film Dark City and examines how various lighting techniques contribute to the processes of establishing atmosphere, creating narrative rhythm and reflecting character psychology. The aim of the research is to demonstrate that light is not only a visual or technical element but also a fundamental carrier of narrative. In the descriptive and interpretive analysis, different types of lighting such as pool of light, pulsing light and piercing light are categorised and their emotional and symbolic effects are evaluated. Each type of

APA, Harvard, Vancouver, ISO, and other styles

24

Martínez-García, Eric E., Gustavo Bruzual, Rosa A. González-Lópezlira, and Lino H. Rodríguez-Merino. "On the Thermally Pulsing Asymptotic Giant Branch Contribution to the Light of Nearby Disk Galaxies." Astrophysical Journal 908, no. 1 (2021): 110. http://dx.doi.org/10.3847/1538-4357/abce68.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Platonova, Ganna, Dalibor Štys, Pavel Souček, Kirill Lonhus, Jan Valenta, and Renata Rychtáriková. "Spectroscopic Approach to Correction and Visualisation of Bright-Field Light Transmission Microscopy Biological Data." Photonics 8, no. 8 (2021): 333. http://dx.doi.org/10.3390/photonics8080333.

Full text

Abstract:

The most realistic information about a transparent sample such as a live cell can be obtained using bright-field light microscopy. Under high-intensity pulsing LED illumination, we captured a primary 12-bit-per-channel (bpc) response from an observed sample using a bright-field microscope equipped with a high-resolution (4872 × 3248) image sensor. In order to suppress data distortions originating from the light interactions with elements in the optical path, poor sensor reproduction (geometrical defects of the camera sensor and some peculiarities of sensor sensitivity), we propose a spectrosco

APA, Harvard, Vancouver, ISO, and other styles

26

Uriri, Solomon Akpore, Okeoghene Precious Anthony, and Nelson Omarijivwie Asano. "Dependence of Luminescence Lifetimes on Measurement Temperature and Thermal Activation Energy from Quartz using a Time-Resolved Pulsing System." Nigerian Journal of Physics 33, no. 4 (2024): 166–71. https://doi.org/10.62292/njp.v33i4.2024.336.

Full text

Abstract:

Luminescence is the light emitted from previously irradiated materials when exposed to light of certain wavelength or temperature. One important technique of luminescence is time-resolved optical stimulation of luminescence (TR-OSL). This technique is well known for the study of luminescence from quartz, feldspar, carbon doped aluminium oxide, etc. These materials are of interest in dosimetry. Time resolved optical stimulation is carried out by separating in time the stimulation and emission of luminescence. The luminescence is obtained from the sample using a short pulse of light and the emis

APA, Harvard, Vancouver, ISO, and other styles

27

Meziane, Belkacem. "Non-linear structure of the light-intensity-output versus pump-input characteristics in self-pulsing lasers." Optical and Quantum Electronics 46, no. 2 (2013): 305–17. http://dx.doi.org/10.1007/s11082-013-9761-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Li, Jianlang, Ken-ichi Ueda, Mitsuru Musha, and Akira Shirakawa. "Residual pump light as a probe of self-pulsing instability in an ytterbium-doped fiber laser." Optics Letters 31, no. 10 (2006): 1450. http://dx.doi.org/10.1364/ol.31.001450.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Dell’Aversano, Natalia, Maria Laura Amenta, Massimo Rippa, et al. "Gold nanoparticles and near-infrared light as a new tool to enhance tissue regeneration." EPJ Web of Conferences 309 (2024): 04009. http://dx.doi.org/10.1051/epjconf/202430904009.

Full text

Abstract:

Controlled temperature elevation within biological tissues, known as hyperthermia, holds promise as a therapeutic treatment. Its efficacy depends on several factors including timing, pulsing, and repetition. Recent research indicates the potential of heat-based therapies not only for cancer treatment but also in tissue regeneration. The usage of photothermal agents, such as gold nanoparticles, enables precise spatio-temporal heat generation, known as photothermal therapy (PTT). Hydra vulgaris, with their unique regenerative capabilities, serve as valuable models for exploring the effects of na

APA, Harvard, Vancouver, ISO, and other styles

30

Fotaki, Marianna, Kate Kenny, and Sheena J. Vachhani. "Thinking critically about affect in organization studies: Why it matters." Organization 24, no. 1 (2017): 3–17. http://dx.doi.org/10.1177/1350508416668192.

Full text

Abstract:

Affect holds the promise of destabilizing and unsettling us, as organizational subjects, into new states of being. It can shed light on many aspects of work and organization, with implications both within and beyond organization studies. Affect theory holds the potential to generate exciting new insights for the study of organizations, theoretically, methodologically and politically. This Special Issue seeks to explore these potential trajectories. We are pleased to present five contributions that develop such ideas, drawing on a wide variety of approaches, and invoking new perspectives on the

APA, Harvard, Vancouver, ISO, and other styles

31

Wetzel, J., Y. Onel, B. Bilki, et al. "Radiation Damage and Recovery Mechanisms in Scintillating Fibers." Journal of Physics: Conference Series 2374, no. 1 (2022): 012121. http://dx.doi.org/10.1088/1742-6596/2374/1/012121.

Full text

Abstract:

Optical scintillating bers lose their transparencies when exposed to radiation. Nearly all studies of radiation damage to optical bers so far only characterize this darkening with a single period of irradiation. Following the irradiation, bers undergo room temperature annealing, and regain some of their transparencies. We tested the irradiation-recovery characteristics of scintillating fibers in four consecutive cycles. In addition, three optical scintillating bers were irradiated at 22 Gy per minute for over 15 hours, and their transmittance were measured each minute by pulsing a light source

APA, Harvard, Vancouver, ISO, and other styles

32

Tang, J. N., W. H. Wu, L. Li, et al. "A fast tunable driver of light source for the TRIDENT Pathfinder experiment." Journal of Instrumentation 18, no. 08 (2023): T08001. http://dx.doi.org/10.1088/1748-0221/18/08/t08001.

Full text

Abstract:

Abstract TRIDENT (The tRopIcal DEep-sea Neutrino Telescope) is a proposed next-generation neutrino telescope to be constructed in the South China Sea. In September 2021, the TRIDENT Pathfinder experiment (TRIDENT EXplorer, T-REX for short) was conducted to evaluate the in-situ optical properties of seawater. The T-REX experiment deployed three digital optical modules at a depth of 3420 meters, including a light emitter module (LEM) and two light receiver modules (LRMs) equipped with photomultiplier tubes (PMTs) and cameras to detect light signals. The LEM emits light in pulsing and steady mode

APA, Harvard, Vancouver, ISO, and other styles

33

Curtis, Angharad, Kang Li, Mohammed Ali, and Nigel Copner. "The Optical Properties of Indocyanine Green suspended in Solution as Observed under Near Infrared LED and LASER Light Conditions." International journal of Science and Engineering Applications 10, no. 5 (2021): 080–89. http://dx.doi.org/10.7753/ijsea1005.1005.

Full text

Abstract:

The use of Indocyanine Green (ICG) as a fluorescent marker at Near Infrared (NIR) excitation wavelengths is well established in clinical imaging. Typical systems comprise multiple LED sources for optimal imaging which can result in unnecessary energy transfer to patients and contribute to tissue damage. An experimental setup comprising a 780 nm excitation channel generating up to 10 mW of optical power is used in order to determine if there is potential to exploit the optical properties of ICG, in order to reduce the total excitation power through pulsing. We demonstrate in this work that a si

APA, Harvard, Vancouver, ISO, and other styles

34

Simoni, F., G. Cipparrone, I. C. Khoo, and C. Umeton. "Self-pulsing of the laser light transmitted by a nonlinear liquid-crystal interface near the phase transition." Optics Letters 13, no. 10 (1988): 886. http://dx.doi.org/10.1364/ol.13.000886.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Parameswaran, Ramya, Kelliann Koehler, Menahem Y. Rotenberg, et al. "Optical stimulation of cardiac cells with a polymer-supported silicon nanowire matrix." Proceedings of the National Academy of Sciences 116, no. 2 (2018): 413–21. http://dx.doi.org/10.1073/pnas.1816428115.

Full text

Abstract:

Electronic pacemakers can treat electrical conduction disorders in hearts; however, they are invasive, bulky, and linked to increased incidence of infection at the tissue–device interface. Thus, researchers have looked to other more biocompatible methods for cardiac pacing or resynchronization, such as femtosecond infrared light pulsing, optogenetics, and polymer-based cardiac patches integrated with metal electrodes. Here we develop a biocompatible nongenetic approach for the optical modulation of cardiac cells and tissues. We demonstrate that a polymer–silicon nanowire composite mesh can be

APA, Harvard, Vancouver, ISO, and other styles

36

Henningsen, F., N. Braam, and M. Danninger. "Picosecond and high-power UV/Vis light pulsing using gallium nitride field-effect transistors: implementation and design evaluation." Journal of Instrumentation 18, no. 10 (2023): P10010. http://dx.doi.org/10.1088/1748-0221/18/10/p10010.

Full text

Abstract:

Abstract This paper discusses the development of cost-effective and high-performance picosecond and high-power light pulsers. The use of innovative gallium nitride field-effect transistor technology, in combination with meticulous electronic design and careful selection of light-emitting diodes or laser diodes for ultraviolet and visible spectral ranges, has resulted in superior characteristics compared to commonly used designs. The sub-ns design achieves pulse widths as low as 300 ps, with photon outputs ranging between 104-109 photons per pulse, over a wavelength range of 235-470 nm. Meanwhi

APA, Harvard, Vancouver, ISO, and other styles

37

Elvidge, Christopher D., Mikhail Zhizhin, Ashley Pipkin, Sharolyn Anderson, William S. Kowalik, and Morgan Bazilian. "Exploring the Hidden World of Lighting Flicker with a High-Speed Camera." Atmosphere 15, no. 4 (2024): 438. http://dx.doi.org/10.3390/atmos15040438.

Full text

Abstract:

Alternating current can result in flickering—or pulsing—in the brightness of light emitted by luminaires. Lighting flicker typically occurs in the range of 100 to 140 cycles per second (Hz), which is too fast for visual perception by most organisms. However, evidence indicates that many organisms perceive flicker with non-visual photoreceptors present on the retinas. Exposure to flickering lights at night disrupts the circadian rhythm of organisms, leading to symptoms similar to blue light exposure at night. The traditional method for detecting flickering is with a flickermeter held near a sin

APA, Harvard, Vancouver, ISO, and other styles

38

Gao, Jun, Jinsong Zhang, Chunxia He, and Qirui Wang. "Effects of light spectra and 15N pulses on growth, leaf morphology, physiology, and internal nitrogen cycling in Quercus variabilis Blume seedlings." PLOS ONE 16, no. 7 (2021): e0243954. http://dx.doi.org/10.1371/journal.pone.0243954.

Full text

Abstract:

Light spectra of sunlight transmittance can generate an interactive effect with deposited nitrogen (N) on regenerated plants across varied shading conditions. Total N content in understory plants can be accounted for by both exogeneous and endogenous sources of derived N, but knowledge about the response of inner N cycling to interactive light and N input effects is unclear. We conducted a bioassay on Chinese cork oak (Quercus variabilis Blume) seedlings subjected to five-month N pulsing with 15NH4Cl (10.39 atom %) at 120 mg 15N plant-1 under the blue (48.5% blue, 33.7% green, and 17.8% red),

APA, Harvard, Vancouver, ISO, and other styles

39

Ardito Marretta, Rosario. "Digital control circuitry for the p53 dynamics in cancer cell and apoptosis." Open Life Sciences 5, no. 2 (2010): 197–213. http://dx.doi.org/10.2478/s11535-009-0068-3.

Full text

Abstract:

AbstractExperimental work and theoretical models deduce a “digital” response of the p53 transcription factor when genomic integrity is damaged. The mutual influence of p53 and its antagonist, the Mdm2 oncogene, is closed in a feedback. This paper proposes an aerospace-based architecture for translating the p53/Mdm2/DNA damage network into a digital circuitry in which the optimal control theory is applied for obtaining the requested dynamic evolutions of some considered cell species for repairing a DNA damage. The purpose of this paper is to demonstrate the usefulness of such digital circuitry

APA, Harvard, Vancouver, ISO, and other styles

40

Lee, J. M., Nark-Eon Sung, Jeong-Kweon Park, et al. "Design and feasibility of quick EXAFS scans for a `broomstick' double-crystal monochromator at PLS beamline." Journal of Synchrotron Radiation 5, no. 3 (1998): 524–26. http://dx.doi.org/10.1107/s0909049598000831.

Full text

Abstract:

A data-collection technique for quick extended X-ray absorption fine-structure spectroscopy (QEXAFS) was developed with a new `broomstick' double-crystal monochromator, which has been installed for X-ray absorption fine-structure (XAFS) applications at the Pohang Light Source. The monochromator operates in a fixed-exit scan mode as the Bragg angle is varied from 8 to 80°, corresponding to 2–14 keV, using an Si(111) crystal. The monochromator scan capability was investigated by analysing EXAFS data quality from step-scan and from continuous rotation of the Bragg crystal reflection angle. In our

APA, Harvard, Vancouver, ISO, and other styles

41

Hunter, Elena, Benita Percival, Daniela T. Eberl, and Samuel J. White. "A Pilot Study to Investigate the Antimicrobial Activity of Pulsed UVA and UVC." Aerobiology 1, no. 2 (2023): 82–97. http://dx.doi.org/10.3390/aerobiology1020007.

Full text

Abstract:

UV irradiation has shown potential in reducing bacterial and viral loadings. This is a pilot study aimed at investigating the antimicrobial effect of a novel pulsed UVA and UVC technology on bacteria and human coronavirus 229E. The selection of these microorganisms is based on their relevance and significance in real-world scenarios. This study consists of independent experiments for the assessment of antibacterial and antiviral activities by using a lawn plate approach, measuring levels of adenine triphosphate (ATP) in three bacterial strains, Escherichia coli, Staphylococcus epidermidis and

APA, Harvard, Vancouver, ISO, and other styles

42

Balmadrid, Davie B., Joan N. Mallorca, Bobby D. Gerardo, and Ruji P. Medina. "IoT-based LED Lighting System with Variable Pulsing Frequency and Dark Periods for Sunflower Microgreens." International Journal of Emerging Technology and Advanced Engineering 12, no. 8 (2022): 136–43. http://dx.doi.org/10.46338/ijetae0822_17.

Full text

Abstract:

For growing microgreens, it is necessary to understand the effect of the lighting conditions to reach a balance between energy consumption and optimal production of a particular crop. The objective of this study is to develop an IoT-based LED lighting system with adjustable lighting parameters that will maximize the production of sunflower microgreens. The system implemented a controlled environment monitored by sensors and regulated through a single-board computer and microcontroller module. A central composite design and response surface methodology were also used to distinguish the optimum

APA, Harvard, Vancouver, ISO, and other styles

43

Ali, H. N. A., N. Arsad, N. F. Zulkipli, et al. "kHz pulse generation with Brillouin erbium fiber laser." Laser Physics 33, no. 1 (2022): 015102. http://dx.doi.org/10.1088/1555-6611/aca6dd.

Full text

Abstract:

Abstract Narrow linewidth light lasers are critical for many applications including quantum computing, spectroscopy, and sensing. Stimulated Brillouin scattering is a promising approach to realize highly coherent light laser emission. Here we report demonstration of a pulsed Brillouin erbium fiber laser (BEFL) operating at kHz regime. The BEFL operates at 1550.1 nm, which is upshifted by 0.09 nm from the Brillouin pump wavelength as the erbium-doped fiber was pumped above the threshold of 24.8 mW. It has a peak power of −8.4 dBm with a side-mode suppression ratio of 32 dB at 980 nm pump power

APA, Harvard, Vancouver, ISO, and other styles

44

Paryavi, Mohsen, Keith Weiser, Michael Melzer, Damon Crook, Chandrika Ramadugu, and Daniel M. Jenkins. "Programmable LED Array for Evaluating Artificial Light Sources to Improve Insect Trapping." Insects 16, no. 2 (2025): 170. https://doi.org/10.3390/insects16020170.

Full text

Abstract:

We developed a programmable LED array to evaluate different wavelength illumination (UV, blue, green, yellow, amber, and red) and modulation schemes to improve catch rates in insect traps. The device can communicate through Bluetooth® with a simple Android app to update the operational settings to facilitate field experiments, including which LEDs to operate, when to operate (always, night only, or predefined intervals after sunset and/or before sunrise), and to change the LED intensities/modulation during operation. We used the devices to evaluate different wavelengths to improve catches in t

APA, Harvard, Vancouver, ISO, and other styles

45

Ubugunova, V. I., L. L. Ubugunov, A. D. Zhambalova, T. A. Ayushina, and V. L. Ubugunov. "Soils of Lakeside Depressions of Pulsing Chloride Lakes of Internal Runoff in Central Asia: Morphology, Physical-Chemical and Geochemical Features." Почвоведение, no. 12 (December 1, 2023): 1580–95. http://dx.doi.org/10.31857/s0032180x23600737.

Full text

Abstract:

Data on saline soils of drainless lakeside depressions, which are formed in areas of extra continental climate with a cyclic 25–30-year change in the level of lakes within the arid and humid climatic phases, were obtained first. Different types of soils are shown to be formed on the landscapes adjacent to highly mineralized chloride lakes of southeastern Trans-Baikal Region: on superaqueous–subaqueous positions– gleyic solonchaks (Gleyic Solonchak (Loamic, Chloridic)); on superaqueous – humus–gley saline soils (Calcaric Mollic Gleysol (Arenic, Endosalic, Sodic)); on eluvial-superaqueous – ligh

APA, Harvard, Vancouver, ISO, and other styles

46

Pietsch, W., W. Voges, E. Kendziorra, and M. Pakull. "Exosat Observations of H2252−035: Pulse Phase and Orbital Phase Dependent Low Energy Absorption and Iron Line Emission." International Astronomical Union Colloquium 93 (1987): 281–92. http://dx.doi.org/10.1017/s0252921100104993.

Full text

Abstract:

AbstractThe 805 sec pulsing X-ray source H2252−035 has been observed for 7 h on September 14/15 and on September 17, 1983 in X-rays with the low energy telescope and the medium energy detectors of EXOSAT. While below 2 keV the semiamplitude of the 805 s pulses is ~ 100% in the 2.3–7.9 keV band it is only ~ 40%. X-ray dips that are more pronounced in low energies occur simultaneously with the orbital minimum of the optical light curve. The medium energy spectra during dips with respect to the non dip spectrum can be explained by just enhanced cold gas absorption of an additional absorbing colum

APA, Harvard, Vancouver, ISO, and other styles

47

Chambers, Paul, Ed A. D. Austin, Mark J. Gunning, and John P. Dakin. "Investigation of the peak power enhancement available from a surface emitting GaAlAs near-infrared light emitting diode by cooling and pulsing." Measurement Science and Technology 14, no. 11 (2003): 2006–14. http://dx.doi.org/10.1088/0957-0233/14/11/020.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Chilicka, Karolina. "Estimation of selected skin parameters during a series of beauty treatments in women with acne: a pilot study." Medical Science Pulse 15, no. 1 (2021): 1–10. http://dx.doi.org/10.5604/01.3001.0014.8697.

Full text

Abstract:

Background: Acne vulgaris occurs most often in young people and can significantly decrease the quality of life. Properly selected dermatological therapy and cosmetic procedures can effectively improve the skin condition of acne patients. Aim of the study: The aim of this study was to examine how various cosmetics treatments affect facial sebum levels, skin hydration, and desquamation in young women with acne vulgaris. Material and Methods: 101 women with acne aged 19–29 (M = 22.5 years, SD = 2.3 years) were included in the study. The following cosmetic treatments were used over a 12-week perio

APA, Harvard, Vancouver, ISO, and other styles

49

Marigo, Paola, Léo Girardi, Alessandro Bressan, et al. "TP-AGB stars in population synthesis models." Proceedings of the International Astronomical Union 5, S262 (2009): 36–43. http://dx.doi.org/10.1017/s1743921310002498.

Full text

Abstract:

AbstractIn spite of its relevance, the Thermally Pulsing Asymptotic Giant Branch (TP-AGB) phase is one of the most uncertain phases of stellar evolution, and a major source of disagreement between the results of different population synthesis models of galaxies. I will briefly review the existing literature on the subject, and recall the basic prescriptions that have been used to fix the contribution of TP-AGB stars to the integrated light of stellar populations. The simplicity of these prescriptions greatly contrasts with the richness of details provided by present-day databases of AGB stars

APA, Harvard, Vancouver, ISO, and other styles

50

Jornod, Nayara, Marc Jankowski, Léonard M. Krüger, et al. "Monolithically integrated femtosecond optical parametric oscillators." Optica 10, no. 7 (2023): 826. http://dx.doi.org/10.1364/optica.490166.

Full text

Abstract:

Synchronously pumped optical parametric oscillators (OPOs) are highly efficient sources of long-wavelength pulses and nonclassical light, making them invaluable for applications in spectroscopy, metrology, multi-photon microscopy, and quantum computation. Typical systems based on free-space cavities either operate non-degenerately, which limits their efficiency, or use active feedback control to achieve degenerate operation, which limits these systems to dedicated low-noise environments. In this work, we demonstrate a femtosecond monolithically integrated OPO. In contrast with bulk OPOs, our m

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!