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Showing 1 to 12 of 151 entries
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Bone mineral and lean tissue loss after long duration space flight.

Journal of musculoskeletal & neuronal interactions

LeBlanc A, Schneider V, Shackelford L, West S, Oganov V, Bakulin A, Voronin L.
PMID: 15758512
J Musculoskelet Neuronal Interact. 2000 Dec;1(2):157-60.

The loss of bone and muscle is a major concern for long duration space flight. In December of 1989, we established a collaboration with Russian colleagues to determine the bone and lean tissue changes in cosmonauts before and after...

Acute Gastrointestinal Injury and Feeding Intolerance as Prognostic Factors in Critically Ill COVID-19 Patients.

Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract

Drakos P, Volteas P, Cleri NA, Alkadaa LN, Asencio AA, Oganov A, Pryor A, Talamini M, Rubano J, Bannazadeh M, Mikell CB, Spaniolas K, Mofakham S.
PMID: 33905039
J Gastrointest Surg. 2022 Jan;26(1):181-190. doi: 10.1007/s11605-021-05015-z. Epub 2021 Apr 27.

BACKGROUND: Although acute gastrointestinal injury (AGI) and feeding intolerance (FI) are known independent determinants of worse outcomes and high mortality in intensive care unit (ICU) patients, the incidence of AGI and FI in critically ill COVID-19 patients and their...

Acute Gastrointestinal Injury and Feeding Intolerance as Prognostic Factors in Critically Ill COVID-19 Patients.

Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract

Drakos P, Volteas P, Cleri NA, Alkadaa LN, Asencio AA, Oganov A, Pryor A, Talamini M, Rubano J, Bannazadeh M, Mikell CB, Spaniolas K, Mofakham S.
PMID: 33905039
J Gastrointest Surg. 2021 Apr 27; doi: 10.1007/s11605-021-05015-z. Epub 2021 Apr 27.

BACKGROUND: Although acute gastrointestinal injury (AGI) and feeding intolerance (FI) are known independent determinants of worse outcomes and high mortality in intensive care unit (ICU) patients, the incidence of AGI and FI in critically ill COVID-19 patients and their...

D-Dimer-Driven Anticoagulation Reduces Mortality in Intubated COVID-19 Patients: A Cohort Study With a Propensity-Matched Analysis.

Frontiers in medicine

Tassiopoulos AK, Mofakham S, Rubano JA, Labropoulos N, Bannazadeh M, Drakos P, Volteas P, Cleri NA, Alkadaa LN, Asencio AA, Oganov A, Hou W, Rutigliano DN, Singer AJ, Vosswinkel J, Talamini M, Mikell CB, Kaushansky K.
PMID: 33634153
Front Med (Lausanne). 2021 Feb 04;8:631335. doi: 10.3389/fmed.2021.631335. eCollection 2021.

No abstract available.

Acute Gastrointestinal Injury and Feeding Intolerance as Prognostic Factors in Critically Ill COVID-19 Patients.

Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract

Drakos P, Volteas P, Cleri NA, Alkadaa LN, Asencio AA, Oganov A, Pryor A, Talamini M, Rubano J, Bannazadeh M, Mikell CB, Spaniolas K, Mofakham S.
PMID: 33905039
J Gastrointest Surg. 2022 Jan;26(1):181-190. doi: 10.1007/s11605-021-05015-z. Epub 2021 Apr 27.

BACKGROUND: Although acute gastrointestinal injury (AGI) and feeding intolerance (FI) are known independent determinants of worse outcomes and high mortality in intensive care unit (ICU) patients, the incidence of AGI and FI in critically ill COVID-19 patients and their...

Aggressive Anticoagulation May Decrease Mortality in Obese Critically Ill COVID-19 Patients.

Obesity surgery

Drakos P, Volteas P, Naeem Z, Asencio AA, Cleri NA, Alkadaa LN, Oganov A, Gammel T, Saadon JR, Bannazadeh M, Tassiopoulos AK, Mikell CB, Rubano J, Pryor A, Spaniolas K, Mofakham S.
PMID: 34816357
Obes Surg. 2021 Nov 24; doi: 10.1007/s11695-021-05799-8. Epub 2021 Nov 24.

BACKGROUND: Obesity is a widely accepted risk factor for the development of severe COVID-19. We sought to determine the survival benefit of early initiation of aggressive anticoagulation in obese critically ill COVID-19 patients.METHODS: We retrospectively reviewed 237 intubated patients...

Novel lithium-nitrogen compounds at ambient and high pressures.

Scientific reports

Shen Y, Oganov AR, Qian G, Zhang J, Dong H, Zhu Q, Zhou Z.
PMID: 26374272
Sci Rep. 2015 Sep 16;5:14204. doi: 10.1038/srep14204.

Using ab initio evolutionary simulations, we predict the existence of five novel stable Li-N compounds at pressures from 0 to 100 GPa (Li13N, Li5N, Li3N2, LiN2, and LiN5). Structures of these compounds contain isolated N atoms, N2 dimers, polyacetylene-like...

Effects of carbon vacancies on the structures, mechanical properties, and chemical bonding of zirconium carbides: a first-principles study.

Physical chemistry chemical physics : PCCP

Xie C, Oganov AR, Li D, Debela TT, Liu N, Dong D, Zeng Q.
PMID: 27088139
Phys Chem Chem Phys. 2016 Apr 28;18(17):12299-306. doi: 10.1039/c5cp07724a.

Interstitial carbides are able to maintain structural stability even with a high concentration of carbon vacancies. This feature provides them with tunable properties through the design of carbon vacancies, and thus making it important to reveal how carbon vacancies...

Pressure-induced stabilization and insulator-superconductor transition of BH.

Physical review letters

Hu CH, Oganov AR, Zhu Q, Qian GR, Frapper G, Lyakhov AO, Zhou HY.
PMID: 23679618
Phys Rev Lett. 2013 Apr 19;110(16):165504. doi: 10.1103/PhysRevLett.110.165504. Epub 2013 Apr 19.

Diborane (B(2)H(6)), a high energy density material, was believed to be stable in a wide P, T interval. A systematic investigation of the B-H system using the ab initio variable-composition evolutionary simulations shows that boron monohydride (BH) is thermodynamically...

Formation of As-As Interlayer Bonding in the collapsed tetragonal phase of NaFe2As2 under pressure.

Scientific reports

Stavrou E, Chen XJ, Oganov AR, Wang AF, Yan YJ, Luo XG, Chen XH, Goncharov AF.
PMID: 26014105
Sci Rep. 2015 May 27;5:9868. doi: 10.1038/srep09868.

NaFe2As2 is investigated experimentally using powder x-ray diffraction and Raman spectroscopy at pressures up to 23 GPa at room temperature and using ab-initio calculations. The results reveal a pressure-induced structural modification at 4 GPa from the starting tetragonal to...

Backbone NxH compounds at high pressures.

The Journal of chemical physics

Goncharov AF, Holtgrewe N, Qian G, Hu C, Oganov AR, Somayazulu M, Stavrou E, Pickard CJ, Berlie A, Yen F, Mahmood M, Lobanov SS, Konôpková Z, Prakapenka VB.
PMID: 26049497
J Chem Phys. 2015 Jun 07;142(21):214308. doi: 10.1063/1.4922051.

Optical and synchrotron x-ray diffraction diamond anvil cell experiments have been combined with first-principles theoretical structure predictions to investigate mixtures of N2 and H2 up to 55 GPa. Our experiments show the formation of structurally complex van der Waals...

Novel superhard B-C-O phases predicted from first principles.

Physical chemistry chemical physics : PCCP

Wang S, Oganov AR, Qian G, Zhu Q, Dong H, Dong X, Davari Esfahani MM.
PMID: 26686242
Phys Chem Chem Phys. 2016 Jan 21;18(3):1859-63. doi: 10.1039/c5cp05367f. Epub 2015 Dec 21.

We explored the B-C-O system at pressures in the range 0-50 GPa by ab initio variable-composition evolutionary simulations in the hope of discovering new stable superhard materials. A new tetragonal thermodynamically stable phase B4CO4, space group I4[combining macron], and...

Showing 1 to 12 of 151 entries