Results 201 to 210 of about 10,509,509 (258)

Chitin‐Derived Carbon‐Metal Functional Materials

Advanced Functional Materials, EarlyView.
Functional carbon materials are synthesized from combination of biopolymer (chitin) and iron precursors. The resultant material exhibits superior surface area and adsorptive properties compared to carbon materials synthesized directly from pure chitin.
Herry Fang, Chao Hsuan (Joseph) Sung, Haitao Yu, Ezra Sarmiento, Katarina Kotanchek, Ryan Christopher Lee, Michelle Chan, David Kisailus   +7 more
wiley   +1 more source

Gradient‐Conductivity Architecture Enables Synchronous Enhancement of Sensitivity and Detection Range in Multifunctional All‐Paper Sensors

Advanced Functional Materials, EarlyView.
A gradient‐engineered all‐paper sensor is fabricated by integrating MXene and in situ grown AgNPs within hierarchical cellulose networks. The device breaks the sensitivity–detection range trade‐off through cascaded conductive pathways, enabling ultrahigh pressure sensitivity, humidity–pressure decoupled dual‐mode sensing, and outstanding EMI shielding,
Ao Li, Jun Xu, Dezhong Xu, Zhaohui Zhang, Jiyi Li, Daxian Cao, Kefu Chen, Mizi Fan   +7 more
wiley   +1 more source

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Fetal cerebral oxygen consumption at different levels of oxygenation

Journal of Applied Physiology, 1977
Cerebral oxygen consumption (VCO2) was measured in 10 unanesthetized, chronically catheterized fetal sheep at 130–140 days of gestation. The VCO2 was calculated using cerebral blood flow (QC) measured with radioactive microspheres and the cerebral arteriovenous difference of O2 content (C(a-V)O2) calculated from preductal arterial and sagittal sinus ...
M, Jones, R E, Sheldon, L L, Peeters, G, Meschia, F C, Battaglia, E L, Makowski   +5 more
openaire   +2 more sources

Fetal intestinal oxygen consumption at various levels of oxygenation

American Journal of Physiology-Heart and Circulatory Physiology, 1982
In seven chronically catheterized fetal lambs, blood flow and oxygen consumption (VO2) in the combined small and large intestines were determined at various oxygen concentrations in fetal arterial blood (CaO2). Intestinal blood flow (Qi) was measured with the radioactive-microsphere technique; intestinal oxygen delivery (DO2 = Qi X CaO2), VO2 [Qi X C ...
D I, Edelstone, I R, Holzman
openaire   +2 more sources

Determination of the oxygen cost of level walking

Clinical Physiology, 1989
Summary. We have developed devices and methods for the determination of the oxygen cost of level walking. Oxygen uptake is determined with an argon dilution method. The validity of this technique is demonstrated. Walking speed is recorded and controlled by means of a speedometer cart.
D, Linnarsson, E, Mattsson, L, Eklöf, L, Broman, M, Broman, L A, Broström   +5 more
openaire   +2 more sources

Regulating Oxygen Levels in a Microfluidic Device

Analytical Chemistry, 2011
Microfluidic devices made from poly(dimethylsiloxane) (PDMS) are gas permeable and have been used to provide accurate on-chip oxygen regulation. However, pervaporation in PDMS devices can rapidly lead to dramatic changes in solution osmotic pressure.
Peter C, Thomas, Srinivasa R, Raghavan, Samuel P, Forry   +2 more
openaire   +2 more sources

OXYGEN LEVELS IN THE POSTMATURE FETUS

Journal of the American Medical Association, 1957
A review of studies relating to fetal oxygen levels during postmaturity seems to indicate that the oxygen demand of the fetus increases with intrauterine maturity. At the same time, animal tests show that blood coming from the uterine veins contains progressively less oxygen as pregnancy continues. The well-oxygenated baby can stand the effect of labor
openaire   +2 more sources

Pressure on oxygen levels of Jakarta Bay

Marine Pollution Bulletin, 2016
Jakarta Bay is subject to inputs of large amounts of dissolved inorganic nutrients and organic matter deriving from the Jakarta Metropolitan Area and its hinterland. As a consequence, inorganic and organic nutrient concentrations in the nearshore area are considerably increased.
Norbert, Ladwig, Karl-J, Hesse, Simon A, van der Wulp, Ario, Damar, Daniela, Koch   +4 more
openaire   +2 more sources

Photoionization of an autoionizing level of atomic oxygen

Physical Review A, 1991
Direct evidence for the photoionization of an autoionizing level of atomic oxygen is presented. Atomic oxygen is produced in the 1${\mathit{s}}^{2}$2${\mathit{s}}^{2}$2${\mathit{p}}^{4}$ $^{1}$${\mathit{D}}_{2}$ level by photodissociation of ${\mathrm{NO}}_{2}$ or ${\mathrm{N}}_{2}$O and excited to the ${(}^{2}$D\ifmmode^\circ\else\textdegree\fi{})3p $^
, Pratt, , Dehmer, , Dehmer
openaire   +2 more sources

Transcutaneous oxygen levels in retinopathy of prematurity

The Lancet, 1995
Retinopathy of prematurity (ROP) is a potentially blinding disease of preterm infants. 21 days of computer-recorded transcutaneous oxygen (TcPO2) data were compared in 31 infants with stage 3 or greater ROP and 38 infants with no ROP or stage 1 or 2. In a multiple logistic regression adjusted for significant perinatal factors (birthweight, gestation ...
S, Cunningham, B W, Fleck, R A, Elton, N, McIntosh   +3 more
openaire   +2 more sources