scholarly journals On-line control of light intensity in a microalgal bioreactor using a novel automatic system

2008 ◽  
Vol 42 (7) ◽  
pp. 554-559 ◽  
Author(s):  
Luís A. Meireles ◽  
A. Catarina Guedes ◽  
Catarina R. Barbosa ◽  
José L. Azevedo ◽  
João P. Cunha ◽  
...  
Keyword(s):  
Light Intensity ◽  
Automatic System ◽  
On Line

Corrigendum to “The effect of the excitation light intensity during on-line monitoring of biodiesel by fluorescence spectroscopy” [Fuel 193 (2017) 395–400]

Fuel ◽  
2018 ◽  
Vol 213 ◽  
pp. 206
Author(s):  
Flávio S. Michels ◽  
Magno A.G. Trindade ◽  
Evaristo A. Falcão ◽  
Rita C.A. Guimarães ◽  
Samuel L. Oliveira ◽  
...  
Keyword(s):  
Light Intensity ◽  
Fluorescence Spectroscopy ◽  
Excitation Light ◽  
On Line

scholarly journals Manufacturing Multicolor LED-Based Phototherapy Device with a Novel 3D Design

2021 ◽  
pp. 120-124
Author(s):  
Busra Yasar ◽  
Yalcin Isler ◽  
Nermin Topaloglu Avsar
Keyword(s):  
Light Intensity ◽  
Brain Damage ◽  
Blue Light ◽  
High Voltage ◽  
Automatic System ◽  
Vision Loss ◽  
Target Area ◽  
Kidney Dysfunction ◽  
3D Design ◽  
Lung And Kidney

Jaundice is a condition that results from an increase in bilirubin level in the blood. Its prevalence in newborns is around 60-70%. When this temporary jaundice becomes pathological and left untreated, significant damages may occur such as brain damage, vision loss, lung and kidney dysfunction, and even death. One of the methods used for the treatment of jaundice is phototherapy. In this study, a design has been made with 3 foldable LED panels to increase the target area. In addition, high-voltage LEDs with blue-green white wavelengths were used. Thus, it was aimed to minimize the risks of nausea and dizziness caused by intense blue light. An automatic system has been achieved by using temperature and light intensity sensors. The system will warn the user at temperatures and light intensity that are harmful to the baby.

Phototrophic growth in the lumostat: a photo-bioreactor with on-line optimization of light intensity

1996 ◽  
Vol 8 (4-5) ◽  
pp. 345-352 ◽  
Author(s):  
Niels T. Eriksen ◽  
Torben Geest ◽  
J. J. Lønsman Iversen
Keyword(s):  
Light Intensity ◽  
On Line ◽  
Photo Bioreactor ◽  
Phototrophic Growth

Instrumentation of On-Line Detection of Microbial Density

2014 ◽  
Vol 635-637 ◽  
pp. 962-966
Author(s):  
Peng Fei Zhou ◽  
Zhen Hua Wang ◽  
Xiao Mei Zhang ◽  
Jin Hui Wang ◽  
Wei Liang ◽  
...  
Keyword(s):  
Light Intensity ◽  
Continuous Flow ◽  
Biochemical Parameters ◽  
Line Detection ◽  
Peristaltic Pump ◽  
Control Parameters ◽  
Training Process ◽  
Microbial Density ◽  
On Line ◽  
Flow Through

Microbial density is an important biochemical parameters of the training process. This article adopts the method of online measuring optical density of the reactor to obtain information on the growth of microorganisms, and flow photoelectric colorimetric instrument was developed based on this principles. Through MCU STM32F107VC output PWM to control peristaltic pump, to achieve the culture of continuous flow through the optical flow cuvette, using photocell to detect culture absorbed light intensity. The instrument can display detected parameters independently and adjust the control parameters, also can communicate with the PC by RS485. The instrument can achieve real-time monitoring of the growth of microorganisms in the reactor.

scholarly journals The effect of the excitation light intensity during on-line monitoring of biodiesel by fluorescence spectroscopy

Fuel ◽  
2017 ◽  
Vol 193 ◽  
pp. 395-400 ◽  
Author(s):  
Flávio S. Michels ◽  
Magno A.G. Trindade ◽  
Evaristo A. Falcão ◽  
Rita C.A. Guimarães ◽  
Samuel L. Oliveira ◽  
...  
Keyword(s):  
Light Intensity ◽  
Fluorescence Spectroscopy ◽  
Excitation Light ◽  
On Line

scholarly journals Sistem Pengendalian Suhu Serta Kelembaban Ruang Sarang Walet Menggunakan Fuzzy Berbasis Mikrokontroler

2021 ◽  
Vol 6 (2) ◽  
pp. 132
Author(s):  
Akhmad Syarif ◽  
Kusrini Kusrini ◽  
Eko Pramono
Keyword(s):  
Control System ◽  
Light Intensity ◽  
Automatic System ◽  
Room Temperature ◽  
Automation System ◽  
Dark Light ◽  
Produce Water ◽  
Control Temperature ◽  
Temperature And Humidity ◽  
The Ideal

Sarang walet merupakan tempat memproduksi air liur burung walet yang telah mengeras. Dalam pembuatan sarang walet harus memiliki kriteria-kriteria. Beberapa kriteria tersebut adalah suhu ruangan walet idealnya adalah 26-29 derajat celcius. Kelembaban udara juga berpengaruh terhadap sarang walet. Biasanya untuk mengatasi hal ini terdapat kolam air untuk menampung air pada ruangan. Air yang ada pada kolam tersebut di gunakan untuk mengatur kelembaban udara. Sehingga akan menjadi mirip seperti goa pada umum nya. Tingkat kelembaban dari 70 sampai 90 derajat celcius. Pada Intensitas cahaya 0 lux (gelap total) adalah intensitas cahaya yang disukai oleh Burung Walet untuk bersarang. Untuk bisa mendapatkan suhu dan kelembaban ideal diperlukan system automatis dalam mengontrol suhu dan kelembaban secara realtime. Dengan system automatisasi yang di atur melalui mikrokontroller menggunakan metode Fuzzy Sugeno untuk menghasilkan puteran air pada keran sehingga mempermudah kontrol ruang sarang walet dan juga data suhu serta kelembaban yang di kirim ke database untuk mempermudah monitoring suhu dan kelembaban dari website. Hasilnya adalah dengan penggunaan sistem kontrol suhu dan kelembaban menggunakan metode fuzzy Sugeno didapatkan hasil dengan 3 parameter yaitu suhu, kelembaban dan cahaya adalah 61.11%, sedangkan dengan 2 parameter yaitu suhu dan kelembaban adalah 39.29% dari 18x percobaan. Kata Kunci—Microcontroller, Arduino, Fuzzy Sugeno, IoTSwallow's nest is a place to produce hardened swallow birds' saliva. In making swallow nests must have criteria. Some of these criteria are the ideal walet room temperature is 26-29 degrees Celsius. Humidity also affects swallow's nest. Usually to overcome this there is a pool of water to hold water in the room. The water in the pool is used to regulate the humidity of the air. So it will be like a cave in general. Humidity levels from 70 to 90 degrees Celsius. At 0 Lux (total dark) light intensity is the intensity of light favored by Swallow for nesting. To be able to get the ideal temperature and humidity needed an automatic system to control temperature and humidity in real time. With the automation system that is set through a microcontroller using the Fuzzy Sugeno method to produce water spin on the tap making it easier to control swallow nest space and temperature and humidity data sent to the database to facilitate monitoring of temperature and humidity from the website. The result is the use of a temperature and humidity control system using the Sugeno fuzzy method obtained results with 3 parameters namely temperature, humidity and light is 61.11%, while with 2 parameters namely temperature and humidity is 39.29% from 18x experiments. Keywords—Microcontroller, Arduino, Fuzzy Sugeno, IoT

scholarly journals On line kinetic analysis of permeation profiles for UV filter loaded microemulsions using an automatic system with spectroscopic detection and a chemometric approach

RSC Advances ◽  
2021 ◽  
Vol 11 (26) ◽  
pp. 15528-15538
Author(s):  
Danielle Silva do Nascimento ◽  
Verónica Volpe ◽  
Matías Insausti ◽  
Marcos Grünhut
Keyword(s):  
Kinetic Analysis ◽  
Automatic System ◽  
Kinetic Constants ◽  
Spectrophotometric Detection ◽  
Uv Filter ◽  
On Line ◽  
Automatic Methods ◽  
Chemometric Approach ◽  
Chemometric Tools

On-line and green automatic methods with spectrophotometric detection were developed to the obtention of permeation kinetic constants of octyl p-methoxycinnamate in o/w microemulsions. The effect of interferences was overcome using chemometric tools.

Fine structure of the retina of the giant scallop, Placopecten magellanicus

1984 ◽  
Vol 42 ◽  
pp. 312-313
Author(s):  
C.V.L. Powell
Keyword(s):  
Fine Structure ◽  
Electron Microscope ◽  
Light Intensity ◽  
Scanning Electron Microscope ◽  
Eye Development ◽  
Preliminary Observation ◽  
Columnar Epithelium ◽  
Placopecten Magellanicus ◽  
Environmental Light ◽  
Scanning Electron

The overall fine structure of the eye in Placopecten is similar to that of other scallops. The optic tentacle consists of an outer columnar epithelium which is modified into a pigmented iris and a cornea (Fig. 1). This capsule encloses the cellular lens, retina, reflecting argentea and the pigmented tapetum. The retina is divided into two parts (Fig. 2). The distal retina functions in the detection of movement and the proximal retina monitors environmental light intensity. The purpose of the present study is to describe the ultrastructure of the retina as a preliminary observation on eye development. This is also the first known presentation of scanning electron microscope studies of the eye of the scallop.

Sign in / Sign up

Export Citation Format

Share Document