Lighting systems

Basics of light and lighting presents about Preface – What is good lighting? What is light? Behaviour; Colour; Sources; Photometrics; Lighting; Vision; Lighting quality; Lighting systems; Luminaires; Lighting and the environment.

58p macj55 05-07-2016 65 6   Download

Solar energy, light and heat radiation from the Sun, has been exploited by humans since ancient times using a variety of technology development than ever before. Solar radiation along with secondary resources of energy like wind and solar energy, water power and biomass, make the most of renewable energy available on earth. Only a tiny fraction of the available solar energy is used.

202p minhhai20789 26-04-2011 249 117   Download

Digital Image Processing: Human Visual System - Duong Anh Duc presents about Human Visual System; Cross-section of the Human Eye; Light and EM Spectrum; Image Sensing and Acquisition; Mathematical Representation of Images; Effect of spatial resolution; Application Areas.

21p cocacola_08 21-11-2015 50 1   Download

Aims of the study: The study aims to explore the generic structure potential (GSP) of a type of content marketing blog posts – instructional blog posts - in English and Vietnamese.

86p closefriend09 16-11-2021 21 4   Download

Objectives of the study: Determination of technical parameters such as variety, nutrition, EC, pH, planting density and harvest time, which are suitable for growth, quality of spinach grown on recirculating hydroponic systems. From there, evaluation the effects of using artificial light (luminescence spectrum and light intensity) on the growth, yield and quality of spinach grown on recirculating hydroponic systems indoor.

26p thebadguys 08-06-2021 29 4   Download

Thesis objectives and tasks: Establishing a mathematical model, putting forward an algorithm applied for seeking the solar system's irradiance equalization configuration under the heterogeneous lighting conditions; establishing a mathematical model, putting forward an algorithm applied for choosing an optimal circuit switching method, from the initial connection configuration to the irradiance equalization configuration.

26p capheviahe27 23-02-2021 30 4   Download

Study the structural, morphological and physicochemical properties of synthetic materials by modern physical and chemical methods such as XRD, FTIR, SEM, TEM, XPS, EDX, BET, TG-DTA, UV -Vis; evaluation of photochemical catalyst using visible light in the decomposition of dyes RR-195, RY-145 on synthetic materials.

27p capheviahe26 25-01-2021 44 3   Download

An efficient lighting system (Compact 3U) was successfully applied to the micropropagation of gloxinia and potato plants. To compare the in vitro growth of plantlets under Neon and Compact 3U lighting systems, gloxinia and potato shoots were cultured on suitable media at different light intensities: (1) 45 µmol m-2s -1 (under Neon lighting system as a control); (2) 45 µmol m-2s -1, (3) 60 µmol m-2s -1, and (4) 75 µmol m-2s -1 (under Compact 3U lighting systems).

9p 12120609 01-06-2020 7 1   Download

The objectives of the thesis: Study on materials fabrication technology; structural - photocatalytic properties of TiO2 material, and TiO2 as the nanostructured variant. On the basis of such material system, the systematic and quantitative study on hydrophilicity or, in other words, the study of surface energy of material systems under Exciation of UV light radiation. Further clarification of the correlation between photocatalytic activity, self-cleaning and hydrophobicity of TiO2 nanostructured materials.

32p xacxuoc4321 09-07-2019 31 5   Download

Objectives of research: Research on ammonia removal in groundwater in Hanoi with the concentration of less than 25mg/L (20mgN/L) by simultaneous Nitrification and Denitrification process in the equipment using MBBR with porous carriers (DHY) of a high surface area of about 6,000-8,000 m2 /m3 , high porosity and light weight, easily moving in water without addition of substrates.

26p xacxuoc4321 09-07-2019 26 6   Download

An optogenetic upgrade for the tet - OFF system fused the inhibitor to the blue light-responsive B-LID degron and optimized the performance of this construct with regard to the number of Med25VBD repeats. This approach resulted in an optogenetic upgrade of the popular Tet-OFF (TetR-VP64, tetO7-PhCMVmin)  system  that  allows tunable, blue light-inducible gene expression in HEK-293T  cells.

5p thuyancn 01-06-2015 30 5   Download

I remember switching off all the lights and locking the door carefully before coming here. switch off /sw t f/ working (tắt máy và có ngắt hẳn nguồn điện) .to enter a restricted area on a computer system I had forgotten my password and couldn't log in /l n/ (đăng nhập vào một khu vực bị giới hạn trên máy tính) to close a computer program that requires a sign /sa n a t/ out (thoát một chương trình máy tính có yêu cầu tên đăng nhập và mật khẩu)...

7p lephinoinhieu 03-08-2013 60 7   Download

Two ORFs, cphA and cphB, encoding proteins CphA and CphB with strong similarities to plant phytochromes and to the cyanobacterial phytochrome Cph1 of Synechocystis sp. PCC 6803 have been identified in the filamentous cyanobacterium Calothrix sp. PCC7601. While CphA carries a cysteine within a highly conserved amino-acid sequence motif, to which the chromophore phytochromobilin is covalently bound in plant phytochromes, in CphB this position is changed into a leucine.

10p system191 01-06-2013 42 4   Download

The depletion of stratospheric ozone results in increasedUV (ultraviolet) light below 300 nm, and has signi®cant e€ects onbiological systems.Tobetterunderstand the e€ectsofUV in this range, early signaling events induced by monochro-maticUV lightwere investigatedusing the chickenBcell line DT40 andmutants lacking protein tyrosine kinases (PTKs). AmongMAPkinase familyproteins, P38MAPkinase (P38) was selectively and immediately activated by 280 nm UV light in cultured DT40 cells.

7p research12 23-04-2013 37 2   Download

Photodynamic treatment (PDT) is an emerging therapeutic procedure for the management of cancer, based on the use of photosensitizers, compounds that generate highly reactive oxygen species (ROS) on irradiation with visible light. The ROS generated may oxidize a variety of bio-molecules within the cell, loaded with a photosensitizer. The high reactivity of these ROS restricts their radius of action to 5–20 nm from the site of their generation.

7p fptmusic 12-04-2013 45 3   Download

Diatoms differ from higher plants by their antenna system, in terms of both polypeptide and pigment contents. A rapid isolation procedure was designed for the membrane-intrinsic light harvesting complexes (LHC) of the diatom Phaeodactylum tricornutumto establish whether different LHC subcomplexes exist, as well to determine an uneven distribution between them of pigments and polypeptides.

10p fptmusic 11-04-2013 47 3   Download

We measured cocrystals of the membrane protein Photosystem I with its soluble electron acceptor ferredoxin for the first time at the ALS (Berkeley, CA). Previous data collected at our home source and at other synchrotron sources showed crystals with very high mosaicity (2–5%) and a diffraction limit to 7–8 Aresolution. This first beamtime at ALS was very successful and may represent a breakthrough for the determination of the crystal structure. 110 crystals, grown under modified crystallization conditions, were scanned and for the first time, crystals diffraction to 3.5 A were observed....

17p fptmusic 11-04-2013 32 2   Download

Cyclobutane-type pyrimidine dimers generated by ultraviolet irradiation of DNA can be cleaved by DNA photolyase. The enzyme-catalysed reaction is believed to be initiated by the light-induced transfer of an electron from the anionic FADH ) chromophore of the enzyme to the pyrimidine dimer. In this contribution, first infrared experiments using a novel E109A mutant ofEscherichia coliDNA photolyase, which is catalytically active but unable to bind the second cofactor methenyltetrahydrofolate, are described....

0p awards 06-04-2013 29 2   Download

We report on the results obtained by measuring the stoi-chiometry of antenna polypeptides in Photosystem I (PSI) fromArabidopsis thaliana. This analysis was performed by quantification of Coomassie blue binding to individual LHCI polypeptides, fractionation by SDS/PAGE, and by the use of recombinant light harvesting complex of Photo-system I (Lhca) holoproteins as a standard reference. Our results show that a single copy of each Lhca1–4 polypeptide is present in Photosystem I.

0p awards 05-04-2013 31 2   Download

Microscopic and light spectroscopic investigations on the supramolecular architecture of bacterial photosynthetic membranes have revealed the pho-tosynthetic protein complexes to be arranged in a densely packed energy-transducing network.

10p galaxyss3 07-03-2013 51 3   Download