Avaliação de sinais eletrofisiológicos e desenvolvimento de imunossensores para detecção de troponina T e proteína C reativa

Abstract

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Growth of One‐Dimensional Nanostructures in Porous Polymer‐Derived Ceramics by Catalyst‐Assisted Pyrolysis. Part II: Cobalt Catalyst

“…Both ceramic honeycombs and ceramic foams have been used as substrates on which different types of 1D nanostructures were created, using different approaches. These include carbon nanofibers (CNFs), [5][6][7][8][9][10][11][12][13] carbon nanotubes (CNTs), [14][15][16][17][18][19][20] or SiC nanofibers. 4,21 Previous works demonstrated that moderate (B30 m 2 /g) to high (B150 m 2 /g) values for the SSA could be obtained, depending on the amount, length, and diameter of the nanostructures.…”

Evaluation of maternal and neonatal outcomes of emergency cesarean deliveries in cases of placenta previa uncomplicated with placenta acreata spectrum

“…Women with PP are at risk of bleeding throughout pregnancy, especially in the third trimester. These patients also have an increased risk for peripartum hysterectomy, blood transfusion, postpartum hemorrhage, sepsis, and poor neonatal outcomes [4,15,16,17]. In this study, maternal and neonatal outcomes of pregnancies with PP uncomplicated with PAS that were subjected to by planned or emergency cesarean section were compared.…”

Application of Homogeneously Precipitated Nanosized Fe‐Doped Alumina Powders to Carbon Nanotube Growth

“…The XRD data obtained in the present study suggest that this maximum amount may vary depending on the synthesis route, which is in agreement with the previous studies. [6][7][8][9]12,13 Among the homogeneously precipitated powders, only the 5Fe1070T60t system is free from the a-Fe 2 O 3 and transitional Al 2 O 3 phases. No CNF was detected in the SEM analysis of the corresponding nanocomposite powder (R-5Fe1070T60t).…”

“…In the present work, one of the main advantage of the starting oxide powders (a-Al 2À2x Fe 2x O 3 ) prepared by the homogeneous precipitation method followed by a calcination treatment is their higher SSA (19-34 m 2 /g- Table I) when compared with the catalytic materials prepared by other chemical routes, also followed by a calcination treatment (o10 m 2 /g). [6][7][8][9]12 Therefore, there is no need for milling and subsequently no potential of contamination. As in previous works, the main key is to find the appropriate calcination treatment (temperature and time) for the starting oxide powder with as high Fe content as possible to assure its complete crystallization under the corundum form while minimizing the amount of the hematite-rich secondary phase and maximizing the SSA.…”

“…8 However, a-Fe 2 O 3 (hematite) phase segregation, which results in the formation of carbon nanofibers (CNFs), should be avoided in the catalytic materials to be utilized for CNTs synthesis, 8 although a-Fe 2 O 3 may lead to smaller particle-sized corundum (a-Al 2 O 3 ) by lowering the g to a-Al 2 O 3 transformation temperature. 10,11 In previous works, the alumina-hematite starting powders for CNT synthesis have been mostly prepared by the mixed-oxalate, 6-9 oxinate, 12 and combustion routes 13 with maximum Fe content of alumina r10 cat.% (i.e., xr0.1 in Al 2À2x Fe 2x O 3 ). Unfortunately, the reported SSA values for the calcined a-Al 2À2x Fe 2x O 3 powders prepared by these methods are relatively low (o10 m 2 /g), which is a limiting factor for the production of large amount of CNTs over the Fe-Al 2 O 3 composite powders.…”