نتایج جستجو برای: lux meter
تعداد نتایج: 28832 فیلتر نتایج به سال:
We sought to assess light characteristics and user acceptability of a prototype Bright Classroom (BC), designed to prevent children's myopia by exposing them to light conditions resembling the outdoors. Conditions were measured throughout the school year in the glass-constructed BC, a traditional classroom (TC) and outdoors. Teachers and children completed user questionnaires, and children rate...
Pencahayaan pada siang hari yang disebabkan oleh sinar matahari dapat di kontrol dengan penataan ventilasi tepat. mempengaruhi tingakat kecerahan suatu objek, menjadi solusi dalam ruangan. Penataan beberapa macam sesuai kebutuhan. Kajian ini dijadikan acuan memperbaiki desain interior studio sudah ada dan bisa sebuah pengetahuan untuk mahasiswa memahami tentang pentingnya pencahayaan desain. Tu...
Background & Objectives: Comfort lighting is one of the most important topics, which provides optimum physical conditions in general environment and workplaces such as hospitals. This study aimed to evaluate general, local and area artificial illumination of Hamadan city hospitals . Methods : In this descriptive-analytical study, general, local and area artificial illumina...
Nanostructured doped As2Ni3O8 samples were synthesized via facile one step solid state reactions at 850 °C for 8 h using As2O3, Ni(NO3)2.6H2O, Gd2O3, Tb2O3 and Ho2O3 raw materials. The synthesized nanomaterials were characterized by powder X-ray diffraction (PXRD) technique. The rietveld analyses showed that the obtained materials were crystallized well in monoclinic crystal structure with the ...
Vibrio fischeri serves as a valuable model of bacterial bioluminescence, its regulation, and its functional significance. Light output varies more than 10,000-fold in wild-type isolates from different environments, yet dim and bright strains have similar organization of the light-producing lux genes, with the activator-encoding luxR divergently transcribed from luxICDABEG. By comparing the geno...
Viable circadian clocks help organisms to synchronize their development with daily and seasonal changes, thereby providing both evolutionary fitness and advantage from an agricultural perspective. A high-resolution mapping approach combined with mutant analysis revealed a cereal ortholog of Arabidopsis thaliana LUX ARRHYTHMO/PHYTOCLOCK 1 (LUX/PCL1) as a promising candidate for the earliness per...
The LuxR protein of the bacterium Vibrio fischeri belongs to a family of transcriptional activators that underlie pheromone-mediated signaling by responding to acyl-homoserine lactones (-HSLs) or related molecules. V. fischeri produces two acyl-HSLs, N-3-oxo-hexanoyl-HSL (3OC6-HSL) and N-octanoyl-HSL (C8-HSL), each of which interact with LuxR to facilitate its binding to a "lux box" DNA sequenc...
The attraction of adult Chironomus salinarius to incandescent 3-W lamps of 7 different colors used in CDC traps was studied on a small island in the lagoon of Venice, Italy. An ANOVA indicated that the lamp type was a highly significant (P < 0.01) factor associated with differences in light trap catch (28% of total variation), as well as catch per lux (18% of total variation). The white lamp at...
The effect of morphological variants of females of Pratylenchus penetrans, P. neglectus, and P. crenatus on the growth of three vegetables was studied. Variants were characterized by having either a smooth or crenate tail terminus. Pea was inoculated with variants of P. penetrans, one female per seedling, and grown at light intensities ranging from 1,350 to 21,600 lux in a series of five experi...
This study was conducted to investigate the effect of the exposure to dim light during sleep on the brain activation while conducting tasks requiring working memory. 23 young healthy subjects participated in this study. The subjects were instructed to sleep in a polysomnography room with no light exposure on the first night and under a dim light condition of 5 lux or 10 lux on the second night....
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