Search Results - "Challa, A. S."

Vitamin D and parathormone levels of late-preterm formula fed infants during the first year of life by Giapros, V I, Schiza, V, Challa, A S, Cholevas, V K, Theocharis, P D, Kolios, G, Pantou, C, Andronikou, S K

“…Background/Objectives: Preterm infants are at risk for low vitamin D but documentation on late-preterm infants is sparse. This prospective study monitored…”
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Reduced toxicity and superior cellular response of preosteoblasts to Ti-6Al-7Nb alloy and comparison with Ti-6Al-4V by Challa, V. S. A., Mali, S., Misra, R. D. K.

“…There are serious concerns on the toxicity of vanadium in Ti‐6Al‐4V alloy. In this regard, we describe the biological footprint of Ti‐6Al‐4V and compare with a…”
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Serum insulin-like growth factor I (IGF-I), IGF-binding proteins-1 and -3, and postnatal growth of late preterm infants by Giapros, V I, Schiza, V, Challa, A S, Pantou, C, Theocharis, P D, Andronikou, S K

“…Late preterm infants may have impaired early growth. The role of circulating insulin-like growth factors (IGFs) in the regulation of postnatal growth of these…”
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Strain hardening behavior of phase reversion-induced nanograined/ultrafine-grained (NG/UFG) austenitic stainless steel and relationship with grain size and deformation mechanism by Challa, V.S.A., Wan, X.L., Somani, M.C., Karjalainen, L.P., Misra, R.D.K.

“…The concept of phase reversion involving severe cold deformation of metastable austenite to generate strain-induced martensite, followed by temperature–time…”
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Vitamin D levels and insulin resistance in children born with severe growth restriction by Giapros, V I, Challa, A S, Cholevas, V L, Evagelidou, E N, Bairaktari, E T, Andronikou, S K

“…This study was designed to examine differences in serum 25(OH)D levels between small-for-gestational-age (SGA) and appropriate-for-gestational-age (AGA)…”
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Growth factors, adiponectin, leptin and body mass index in pre-pubertal children born large for gestational age by Challa, A. S., Evagelidou, E. N., Giapros, V. I., Cholevas, V. I., Andronikou, S. K.

“…Objective : To examine whether the IGF axis in pre-pubertal children born large for gestational age (LGA) differs from that of those born appropriate for…”
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Visfatin levels in prepubertal children born small or large for gestational age by Giapros, V I, Kiortsis, D N, Evagelidou, E N, Challa, A S, Cholevas, V K, Siomou, E C, Bairaktari, E T, Andronikou, S K

“…Children born small (SGA) or large (LGA) for gestational age are prone to develop insulin resistance (IR) during childhood. Visfatin, a hormone with…”
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Growth factors, adiponectin, leptin and body mass index in pre-pubertal children born large for gestational age by Challa, A S, Evagelidou, E N, Giapros, V I, Cholevas, V I, Andronikou, S K

“…OBJECTIVETo examine whether the IGF axis in pre-pubertal children born large for gestational age (LGA) differs from that of those born appropriate for…”
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The effect of coiling temperature on the microstructure and mechanical properties of a niobium–titanium microalloyed steel processed via thin slab casting by Challa, V.S.A., Zhou, W.H., Misra, R.D.K., O'Malley, R., Jansto, S.G.

“…We describe here the influence of coiling temperature on the microstructure and mechanical properties, especially toughness, in a low carbon niobium…”
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The significant impact of mechanically-induced phase transformation on cellular functionality of biomedical austenitic stainless steel by Challa, V.S.A., Nune, K.C., Gong, N., Misra, R.D.K.

“…The implant surface and tissue experience strain when micro-motion occurs at the bone-implant interface under physiological loading. Moreover, strain is also…”
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Analysis of Puncture Resistant Steel for Tank Cars by Abotula, Sandeep, Konda, Bharath R., Walsh, William J., Challa, Venkata S. A., Ros, Tanya, Manohar, Murali

“…A new puncture resistant steel is developed to improve the safety of tank cars transporting flammable liquids. The puncture behavior of the tank cars is…”
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Failure Investigation of Hydrotest Rupture on a Natural Gas Pipeline by Challa, V. S. A., Yashwanth, I. V. S., Mendoza, Kayna Lee, Stafford, Stephen

“…A land-based natural gas pipeline, API 5L Grade B pipe with an electric resistance weld (ERW), failed during hydrotesting inspection along the ERW seam, which…”
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Adverse events and practice considerations for transgender patients undergoing hysterectomy by Pando, C, Gerlach, L, Challa, SA, Pan, A, Francis, J

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Interplay between grain structure, deformation mechanisms and austenite stability in phase-reversion-induced nanograined/ultrafine-grained austenitic ferrous alloy by Misra, R.D.K., Challa, V.S.A., Venkatsurya, P.K.C., Shen, Y.F., Somani, M.C., Karjalainen, L.P.

“…The concept of phase reversion involving severe cold deformation of austenite at room temperature to generate strain-induced martensite, followed by annealing…”
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Significance of interplay between austenite stability and deformation mechanisms in governing three-stage work hardening behavior of phase-reversion induced nanograined/ultrafine-grained (NG/UFG) stainless steels with high strength-high ductility combination by Challa, V.S.A., Wan, X.L., Somani, M.C., Karjalainen, L.P., Misra, R.D.K.

“…In the context of obtaining high strength-high ductility combination in nanograined/ultrafine-grained austenitic stainless steels, we underscore the dependence…”
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Influence of grain structure on the deformation mechanism in martensitic shear reversion-induced Fe-16Cr-10Ni model austenitic alloy with low interstitial content: Coarse-grained versus nano-grained/ultrafine-grained structure by Challa, V.S.A., Misra, R.D.K., Somani, M.C., Wang, Z.D.

“…Nanograined/ultrafine-grained (NG/UFG) materials characterized by high strength-high ductility combination are excellent vehicles to obtain an unambiguous…”
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Relationship of grain size and deformation mechanism to the fracture behavior in high strength–high ductility nanostructured austenitic stainless steel by Misra, R.D.K., Wan, X.L., Challa, V.S.A., Somani, M.C., Murr, L.E.

“…In this study we underscore the dependence of grain structure and deformation mechanism on the fracture behavior in a high strength–high ductility bearing…”
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Strain hardening behavior of nanograined/ultrafine-grained (NG/UFG) austenitic 16Cr–10Ni stainless steel and its relationship to austenite stability and deformation behavior by Challa, V.S.A., Misra, R.D.K., Somani, M.C., Wang, Z.D.

“…The concept of phase reversion involving severe cold deformation of metastable austenite to generate strain-induced martensite, followed by a specific…”
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Significant influence of carbon and niobium on the precipitation behavior and microstructural evolution and their consequent impact on mechanical properties in microalloyed steels by Liu, S., Challa, V.S.A., Natarajan, V.V., Misra, R.D.K., Sidorenko, D.M., Mulholland, M.D., Manohar, M., Hartmann, J.E.

“…Carbon and niobium (Nb) play an important role in influencing the ultimate microstructure and mechanical properties. In this regard, we elucidate here the…”
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Processing-structure-mechanical property relationship in Ti-Nb microalloyed steel: Continuous cooling versus interrupted cooling by Natarajan, V.V., Liu, S., Challa, V.S.A., Misra, R.D.K., Sidorenko, D.M., Mulholland, M.D., Manohar, M., Hartmann, J.E.

“…The process parameters associated with thermo-mechanical controlled processing (TMCP) of steels play an important role in influencing the ultimate mechanical…”
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