Characterization of the Thermal Environment and Poultry Performance in Different half-acclimatized Facility Systems under Brazilian Winter Conditions

2007 ◽  
Author(s):  
Irene M.S MENEGALI ◽  
Ilda de Fátima Ferreira TINÔCO ◽  
Fernando da Costa; BAÊTA ◽  
Lívio Guilherme Marcelino DUARTE ◽  
Keles Regina Antony; INOUE ◽  
...  
Keyword(s):  
Thermal Environment ◽  
Winter Conditions

scholarly journals Thermal environment characterization of laying hen-housing systems

2022 ◽  
Vol 10 (1) ◽  
pp. 1-9
Author(s):  
Nágela Maria Henrique Mascarenhas ◽  
Dermeval Araújo Furtado ◽  
Bonifácio Benício de Souza ◽  
Airton Gonçalves de Oliveira ◽  
Antonio Nelson Lima da Costa ◽  
...  
Keyword(s):  
Thermal Environment ◽  
Laying Hen ◽  
Housing Systems

Testing of the Mars Exploration Rovers to Survive the Extreme Thermal Environments

2007 ◽  
Vol 4 (4) ◽  
pp. 145-154
Author(s):  
Kin F. Man ◽  
Alan R. Hoffman
Keyword(s):  
Thermal Environment ◽  
Extreme Temperature ◽  
System Level ◽  
Thermal Testing ◽  
Mars Exploration ◽  
Thermal Environments ◽  
Diurnal Cycles ◽  
Operational Temperature ◽  
Science Laboratories

NASA's Mars Exploration Rover (MER) project involved delivering two mobile science laboratories (rovers) on the surface of Mars to remotely conduct geologic investigations, including characterization of a diversity of rocks and soils. The rovers were launched separately in 2003 and have been in operation on the surface of Mars since January 2004. The rovers underwent a comprehensive pre-launch environmental assurance program that included assembly/subsystem and system-level testing in the areas of dynamics, thermal, and electromagnetic (EMC), as well as venting/pressure, dust, radiation, and solid-particle (meteoroid, orbital debris) analyses. Due to the Martian diurnal cycles of extreme temperature swings, the susceptible hardware that were mounted outside of the thermal controlled zones also underwent thermal cycling qualification of their packaging designs and manufacturing processes. This paper summarizes the environmental assurance program for the MER project, with emphasis on the pre-launch thermal testing program for ensuring that the rover hardware would operate and survive the Mars surface temperature extremes. These test temperatures are compared with some of the Mars surface operational temperature measurements. Selected anomalies resulting from operating the rover hardware in the Mars extreme thermal environment are also presented.

Evaluation of satellite-derived products for the characterization of the urban thermal environment

2012 ◽  
Vol 6 (1) ◽  
pp. 061704 ◽  
Author(s):  
Iphigenia Keramitsoglou ◽  
Ioannis A. Daglis ◽  
Vassilis Amiridis ◽  
Nektarios Chrysoulakis ◽  
Giulio Ceriola ◽  
...  
Keyword(s):  
Thermal Environment ◽  
Urban Thermal Environment

PID temperature controller in pig nursery: spatial characterization of thermal environment

2017 ◽  
Vol 62 (5) ◽  
pp. 773-781 ◽  
Author(s):  
Juliana de Souza Granja Barros ◽  
Luiz Antonio Rossi ◽  
Zigomar Menezes de Souza
Keyword(s):  
Thermal Environment ◽  
Temperature Controller ◽  
Spatial Characterization

Thermal Characterization of Bi-Material Microcantilevers: Thermal Conductance and Microscale Convection

2009 ◽  
Author(s):  
Arvind Narayanaswamy ◽  
Ning Gu
Keyword(s):  
Heat Transfer ◽  
Thermal Environment ◽  
Coefficient Of Thermal Expansion ◽  
Ambient Pressure ◽  
Thermal Conductance ◽  
Thermal Characterization ◽  
Temperature Changes ◽  
Atomic Force ◽  
The Heat Transfer Coefficient

Bi–material atomic force microscope cantilevers have been used extensively over the last 15 years as physical, chemical, and biological sensors. As a thermal sensor, the static deflection of bi–material cantilevers due to the mismatch of the coefficient of thermal expansion between the two materials has been used to measure temperature changes as small as 10−5 K, heat transfer rate as small as 40 pW, and energy changes as small as 10 fJ. Bi–material cantilevers have also been use to measure “heat transfer - distance” curves a heat transfer analogy of the force–distance curves obtained using atomic force microscopes. In this work, we concentrate on characterization of heat transfer from the microcantilever. The two quantities that we focus on are the thermal conductance of the cantilever, Gcant (units WK−1), and the thermal conductance due to microscale convection from the cantilever to the ambient fluid, Gconv (units WK−1). The deflection of the cantilever to changes in its thermal environment is measured using the shift in position, on a position sensitive detector, of a laser beam focused at the tip of the cantilever. By determining the response of the microcantilever to (1) uniform temperature rise of the ambient, and (2) change in power absorbed at the tip, the thermal conductance of heat transfer from the cantilever can be determined. When the experiment is performed at low enough ambient pressure so that convection is unimportant (¡ 0.1 Pa), Gcant can be measured. When the experiment is performed at atmospheric pressure the heat transfer coefficient due to convection from the cantilever can be determined.

scholarly journals Characterization of Apple Hybrids (Malus × domestica Bork.)

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 804E-805
Author(s):  
Aroldo Isudro Rumayor Flores* ◽  
Jose Antonio Vázquez Ramos ◽  
Martínez Cano Andres ◽  
Borrego Escalante Fernando
Keyword(s):  
Bud Break ◽  
Fruit Breeding ◽  
Winter Climate ◽  
Vegetative Period ◽  
Mild Winter ◽  
Bloom Period ◽  
Winter Conditions ◽  
Bud Breaking ◽  
Year 2000

In hybrids of apple (Malus × domestica Bork.) subjected to study phenological in Aguanueva, Coahuila, Mexico, their requirements of chill hours (CH), heat units (HU), bud breaking flower and vegetative % (BB) for good adaptation to warm milder climate, bloom period (BP), and vegetative period (VP), were determined using the Methodology of Identification of New Cultivars of Fruit Breeding (Ploudiv 1983). They were material with requirements of cold from 200 up to 650 (CH) when they underwent a test of controlled conditions of (CH). These materials are; AR-109 (200 CH), AR-106 (300 CH), AR-108 (300 CH), AR-147 (300 CH), AR-144 (550 CH), and AR-a60 (650 CH), while the control Mutant Aguanueva II (500 CH). Under winter conditions of the year 2000 with so slone 168.76 (CH), some materials showed a bud break superior to the control. The bud break dates understand between 30 days before the witness Aguanueva II, as the hybrid AR-147 and 34 days later in the case of the hybrid AR-151, location this way to the materials as: Early with regard to the control; AR-16-S (24 days), AR-130 (14 days) and AR-147 (30 days). Similar to the control; AR-144, AR-103 and AR-127. Later than the control; AR-111 and AR-103-B. since they don't require spray bud breaking res compounds for their bud break and they have bloom period (BP) of 8 to 21 days. And when presenting low chill requirements they will be set fruit in a microclimate frost-free and growing and have their cultivation in a mild winter climate.

Sign in / Sign up

Export Citation Format

Share Document