نتایج جستجو برای: porous radiant burners

تعداد نتایج: 52890  

Journal: :Archives of disease in childhood. Fetal and neonatal edition 1996
J H Seguin R Vieth

The body temperatures of infants weighing less than 1500 g under radiant warmers during routine care were documented in the first week of life. Ten infants (median gestational age 28 weeks, median birthweight 913 g) were studied. During 30 nursing interventions (mean 9.2 minutes) mean oesophageal and foot temperature changed 0 degrees C and -0.11 degrees C, respectively. A radiant warmer may li...

Journal: :Archives of dermatology 2003
James W Tunnell David W Chang Carol Johnston Jorge H Torres Charles W Patrick Michael J Miller Sharon L Thomsen Bahman Anvari

BACKGROUND Increasing radiant exposure offers a means to increase treatment efficacy during laser-mediated treatment of vascular lesions, such as port-wine stains; however, excessive radiant exposure decreases selective vascular injury due to increased heat generation within the epidermis and collateral damage to perivascular collagen. OBJECTIVE To determine if cryogen spray cooling could be ...

Journal: :Physics in medicine and biology 2000
A V Parisi M G Kimlin J C Wong M Wilson

The personal radiant exposure distribution of solar erythemal UV in tree shade for an upright posture was measured, with measurements over the whole summer for a total of 17 trees. For each tree, the personal radiant exposure distribution was measured for both the morning and afternoon periods. The exposure ratios averaged over all the trees and over the morning and afternoon periods ranged fro...

‎Many optimization problems can be reduced to a problem with an increasing and co-radiant objective function by a suitable transformation of variables. Functions, which are increasing and co-radiant, have found many applications in microeconomic analysis. In this paper, the abstract convexity of positive valued affine increasing and co-radiant (ICR) functions are discussed. Moreover, the ...

Journal: :Energies 2021

Despite the technology for wood biomass combustion being much more advantageous when compared to traditional burners, such as Stoker or fluidized burner, there has been scant research on topic of cyclone burners. The purpose this paper is review burner technology, which includes theory, design, and combustion, in terms chemistry properties biomass, emission related NOx CO, application co-firing...

Journal: :IOP conference series 2022

Abstract The present study is to conduct a Techno-economic Assessment of 5-7 kW Porous Radiant Burner (PRB) – based LPG cook-stove operating in eateries and restaurants. Process flow has been performed primarily understand the technological process involved PRB also estimate cost manufacturing. estimation done considering direct costs such as material labor costs, indirect factory works adminis...

Journal: :Energy 2023

The present paper investigates the feasibility of using H2/CH4 fuel blends in micromix-type burners applied to industrial combustion systems. micromix burner concept, characterised by formation miniaturised and compact turbulent diffusion flames, was developed for gas turbine hydrogen showing low NOx emissions (below 10 ppm) without flashback risk, which represent main issues when pure or enric...

Journal: :Nature 1989

Journal: :Applied optics 2003
James W Tunnell Lihong V Wang Bahman Anvari

Laser therapy for cutaneous hypervascular malformations such as port-wine stain birthmarks is currently not feasible for dark-skinned individuals. We study the effects of pulse duration, radiant exposure, and cryogen spray cooling (CSC) on the thermal response of skin, using a Monte Carlo based optical-thermal model. Thermal injury to the epidermis decreases with increasing pulse duration durin...

Journal: :Science 1888

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