beyond its quantity, natural light has unique properties used intelligently in iranian historical architecture in order to transfer spiritual concepts. religious buildings are a good context for re-reading of light concept. due to its valuable place in iranian-islamic belief as well as its direct relationship with wisdom and philosophy, the qualitative presence of light in architecture, aimed a...

BACKGROUND Vitamin D is an important factor in human health. Yet, vitamin D deficiency is very common. We aimed to confirm serum 25-hydroxyvitamin D (25OHD) concentration change after sunlight exposure and to elucidate the relationship between the amount of sunlight exposure and serum 25OHD level change by ambulatory lux meter and sunlight exposure questionnaire. METHODS Twenty healthy young ...

INTRODUCTION Evaluation of optical media is important in ophthalmic practice. OBJECTIVE to design and tryout an electro-physiological device in order to assess the transparency of the vitreous. MATERIALS AND METHODS A media-meter was designed where a light sensitive sensor was placed on the cornea and adjoining sclera during the process of trans-illumination. The trans-corneal (TC) and tran...

Sistem pencahayaan merupakan suatu yang sangat penting untuk diperhatikan karena kesehatan mata kita akan terganggu dengan minimny intensitas cahaya. Di dalam ruangan terutamanya ruang kerja harus memiliki cahaya memadai sesuai standar telah di tentukan. Analis pengukuran menggunakan lux meter digital mengetahui nilai cahaya, percobaan ini dilakukan apakah sudah atau belum memenuhi standart SNI...

An application Blocking Oscillator (BO) on a battery to power a system LED lamp light detector has been built and compared with a standard system used phone cellular adapter as the power supply. The performance analysis was carried out to determine the efficiency of the blocking oscillator and its potency to be adopted in an electronic appliance using low voltage and current from a battery. Mea...

The Comfort against the influence of air temperature, humidity, indoor lighting, circulation and acoustics is part effort to improve quality function room. If room comfortable, activities that take place in it are optimal. This research a qualitative descriptive method. results this study were obtained average temperature humidity South Tangerang City exceeded comfort threshold 22.8-25.8 oC, em...

Kebisingan dan pencahayaan merupakan faktor risiko kesehatan yang dapat mempengaruhi kinerja pekerja. Tujuan penelitian adalah untuk menganalisis tingkat kebisingan pada area proyek pembangunan gedung sebagai Jenis ini deskriptif analitik. Pengumpulan data melalui observasi pengukuran langsung di lokasi penelitian. Pengukuran eksposur masing-masing dilakukan dengan menggunakan Sound Level Meter...

Workplace safety is dependent on numerous factors within the work environment and light intensity (illuminance) vital in ensuring this, as inadequate lighting not unrelated to varying deleterious health effects. This study was undertaken measure level of illuminance laboratories offices a selected Faculty University, order ascertain if conditions are compliance with illumination standards (500 ...

OBJECTIVE This cross-sectional study was done to find the prevalence of eye strain and other ocular morbidities among students in Udupi, Karnataka. METHODS The study protocol included interview, visual acuity examination using Snellen chart, and measuring classroom illumination through lux meter. RESULTS 26% students had visual morbidity and the most prevalent symptoms of eyestrain were hea...