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Publication1, 2, 4-Triazole as a reference material for combustion calorimetry of N-containing compounds( 2001-01-01)
;Roux M. ;Torres L.A micro-bomb combustion calorimeter recently designed for samples of mass ≈80 mg has been improved and tested with m-methoxybenzoic acid in order to verify the chemistry of the combustion process and the accuracy of the energy corrections involved in the analysis of results. From measurements in this calorimeter, the standard massic energy of combustion of 1, 2, 4-triazole was determined to be Δcuo = -(19200.3 ± 3.4) J·g−1. Some new measurements with our macro combustion calorimeter confirm an earlier result from this laboratory of -(19203.1 ± 1.2) J·g−1. Determination of the purity by d.s.c. of 1, 2, 4-triazole purified some 10 years ago reveals that samples of this compound remained unchanged and suggest that 1, 2, 4-triazole be used as a possible reference material for organic compounds with a high content of nitrogen. From the experimental results with the micro-bomb combustion calorimeter, the actual and earlier results from macro-bomb combustion calorimetry, and those obtained in other laboratories, the standard massic energy of combustion of 1, 2, 4-triazole was deduced to be Δcuo = -(19202.5 ± 1.7) J·g−1. © 2000 Academic Press. -
Publication1,1′‐Disubstituted Ferrocene‐Containing Thermotropic Liquid Crystals of structure [Fe{(η5‐C5H4)COOC6H4OCnH2n+1}2] (X OOC or COO). Influence of the orientation of the central ester function on the mesogenic properties( 1993-01-01)
;Deschenaux R. ;Marendaz J.‐.The two series I and II of 1,1′ ‐disubstituted ferrocenes which differ by the direction of the ester function included in the rigid organic part were synthesized and their liquid crystal properties examined. These latter were found to be strongly dependent on the orientation of the connecting ester group and on the alkyl chain length. Copyright © 1993 Verlag GmbH & Co. KGaA, Weinheim -
Publication1,3-Diethyl-2-thiobarbituric acid as an alternative coinitiator for acidic photopolymerizable dental materials(Wiley-Blackwell, 2013-10-01)
;Münchow E. ;Valente L. ;Fernández M. ;Lima G. ;Petzhold C. ;Piva E.Ogliari F.The ethyl-4-dimethylaminobenzoate (EDAB) is widely used as a coinitiator of the camphorquinone (CQ), but in acidic circumstances it might present some instability, reducing the polymerization efficiency of the material. Considering this, new coinitiators are being evaluated. Hence, this study evaluated the kinetic of polymerization (KP), the degree of conversion (DC), and the rate of polymerization (RP) of experimental resin adhesives containing 1,3-diethyl-2-thiobarbituric acid (TBA) as a coinitiator of the CQ. The experimental monomeric blend was prepared with bisphenol A glycidyl dimethacrylate, 2-hydroxyethyl methacrylate, and acidic monomers. CQ was added at 1 mol % as photoinitiator. Six groups were formulated: four containing concentrations of 0.1, 0.5, 1, and 2 mol % of TBA, one without coinitiator, and the last one containing 1 mol % of EDAB (control group). The KP and the R P were performed using real-time Fourier Transform infrared spectroscopy. The group without coinitiator has not formed a polymer, whereas the addition of TBA resulted in the conversion of monomers in polymer. The DC of the adhesives was as higher as the increase in the TBA content. The group with 2 mol % of TBA presented improved DC and reactivity (RP) than the other groups and the control one. Hence, the TBA has performed as a coinitiator of the CQ for the radical polymerization of methacrylate resin adhesives and it has improved the DC and the reactivity of the materials. Thus, it is a potential coinitiator for the photopolymerization of dental materials. © 2013 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 101B: 1217-1221, 2013. Copyright © 2013 Wiley Periodicals, Inc., a Wiley Company. -
Publication1,3-Disubstituted ferrocene-containing thermotropic liquid crystals of form (η5-C5H5)Fe[(η5-C 5H3)-1,3-(CO2C6H4CO 2C6H4OCnH2n + 1) 2( 1994-01-01)
;Deschenaux R. ;Guillon D.Heinrich B.The title compounds have been synthesized and their liquid-crystal properties investigated. The reported ferrocene derivatives exhibited enantiotropic nematic and/or smectic A phases associated with broad anisotropic domains. The molecular arrangement within the smectic A phases was studied by X-ray diffraction. The experimental data, compared to the values obtained from CPK models, suggested a monolayer molecular organization with a pronounced chain disorganization for the medium- and long-chain derivatives. -
Publication[1-8-NαlC]-Zanriorb A1, a Proapoptotic Orbitide from Leaves of Zanthoxylum riedelianum(American Chemical Society, 2016-05-27)
;Dos Beirigo P. ;Torquato H. ;Dos Santos C. ;De Carvalho M. ;Castro R. ;De Sousa P. ;Jacinto M.Da Silva V.A new orbitide named [1-8-NαC]-zanriorb A1 (1) was isolated and characterized from the leaves of Zanthoxylum riedelianum using NMR and mass spectrometry. The absolute configuration of the amino acids was determined using Marfey's method on the acid hydrolysates. Compound 1 induced cell death by apoptosis in Jurkat leukemia T cells (IC50 218 nM). -
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Publication10 In vivo embryo production of superovulated maiden Dohne Merino ewes and embryo transfer under high-altitude conditions(NLM (Medline), 2021-12-01)
;Vivanco-Mackie H.W. ;Ponce-Salazar M.D.Huaynate-Paucar H. -
Publication10 years evaluation of the diagnostic and therapeutic value of the lithium transport ratio in bipolar disorder: preliminary report(Elsevier, 1993-01-01)
;Poletti L.Cazorla A. -
Publication[10 years of liver transplantation in Peru].(Sociedad De Gastroenterologia Del Peru, 2010-10-01)
;Chaman Ortiz J. ;Rondon Leyva C.The article reviews the experience in 10 years of hepatic transplants performed by The Transplant Department of the National Hospital Guillermo Almenara Irigoyen (HNGAI), describing the history, surgical outcomes in adults and children, retransplantation, combined liver-kidney transplants, complications in 72 transplants performed at the time of submission of the article. -
Publication10-pi-Electron arenes a la carte: structure and bonding of the [E-(CnHn)-E](n-6) (E = Ca, Sr, Ba; n=6-8) complexes(Royal Society of Chemistry, 2016)
;Mondal, S ;Pan, S ;Osorio, E ;Torres-Vega, JJ ;Tiznado, W ;Restrepo, AMerino, GIn this paper, we provide solid evidence to show that among an overwhelming structural diversity, alkaline earth metals (Ca, Sr, Ba) have the ability to form inverted sandwich compounds with C6H6, C7H7+, and C8H82+ of Dnh symmetry and general formula [E-(CnHn)-E]n-6 (n = 6-8) with planar 10-π-electron aromatic cores by virtue of transferring two electrons per metal atom to the ring. However, the origin of the orbital interaction between the metals and the carbon ring is quite different; while [E-(C6H6)-E] complexes are dominated by δ-interactions, both π- and δ-interactions are important in [E-(C7H7)-E]+ and [E-(C8H8)-E]2+ complexes. © 2016 the Owner Societies.Scopus© Citations 21 -
Publication10-Year experience on renal cell carcinoma at the instituto de enfermedades neoplasicas(Wiley-Blackwell, 1997-12-01)
;Pow-Sang M.OBJECTIVE. Renal cell carcinoma (RCC) was first described in 1826. We analyse retrospectively 58 pts who underwent radical nephrectomy and determine their survival MATERIALS: Between Januray 1974 and December 1985, 58 pts with RCC underwent radical nephrectomy (nephrectomy and lymphadenectomy). The series comprised 40 males and 18 females (ratio 2.2:1), with a mean age of 66 years (r 13-85). RESULTS: Mean time of symptoms prior to treatment was 1 to 6 months 16 pts (27,5%), and more than 6 monts 42 pts (71,8%). Robson classification of the tumor showed 12 pts stage I (20,7%), 1 stage II (1,7%), 6 stage III (10,3%) and 31 stage IV (53,5%); in 8 pts (13,8%) stage unknown since these pts had surgery in other hospital.Tumor grade was weel differentiated in 21 pts (36,2%), moderatelly differentiated in 20 (34,5%), and poorly differentiated in 4 (6,9%); tumor grade was unknown in 13 (22,4%). Six pts (6,4%) had tumors between 5-1 Ocm, and 33 pts (57%) tumors more than 10cm; in 19 pts (32,7%) tumor size was unknown. There were 5 post-op deathts (8,6%). Five-year survival for stage I was 50% and 41,7% at 10 years. In this group, 2 pts died because of distal metastatic disease at 12 and 16 years, respectively. The only pt in stage II survived for 9 years, at which time developed lung metastasis, dying from the disease. Two-year survival for stage III was 50%, then all pts lost to follow-up. For stage IV, all pts (31/31 - 100%) died within 3 years from surgery. CONCLUSIONS: Our survival is similar to that described in the literaure, as well as surgical mortality. RCC, in their initial stages, will rescue 50% of pts at 5 years, and 41,7% at 10 years. -
Publication10.2 Zymosan and specific-rickettsia activation of oxygen free-radicals production in Pecten maximus hemocytes( 1989-01-01)
;Le Gall G. ;Bachere E.Grizel H. -
Publication10.3 Chemiluminescent responses of Ostrea edulis and Crassostrea gigas hemocytes to Bonamia ostreae (Ascetospora)( 1989-01-01)
;Hervio D. ;Bachere E.Grizel H. -
Publication100-nm thick single-phase wurtzite BAlN films with boron contents over 10%(Wiley-VCH Verlag, 2017-08-01)
;Li X. ;Wang S. ;Liu H. ;Detchprohm T.Dupuis R.D.Growing thicker BAlN films while maintaining single-phase wurtzite structure and boron content over 10% has been challenging. In this study, we report on the growth of 100 nm-thick single-phase wurtzite BAlN films with boron contents up to 14.4% by MOCVD. Flow-modulated epitaxy was employed to increase diffusion length of group-III atoms and reduce parasitic reactions between the metalorganics and NH3. A large growth efficiency of ∼2000 μm mol−1 was achieved as a result. Small B/III ratios up to 17% in conjunction with high temperatures up to 1010 °C were utilized to prevent formation of the cubic phase and maintain wurtzite structure.