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$30 USD / hora
Bandera de VENEZUELA
valencia, venezuela
$30 USD / hora
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Se unió el octubre 11, 2016
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Carlos R.

@cromlz1934

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$30 USD / hora
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valencia, venezuela
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Ph.D. in chemistry, Magister in Statistic.

I offer my experience as a chemist and statistician, to help you achieve the goal of the project. I have a Ph.D. in chemistry and a master's degree applied statistic and more than 20 years of experience in research, development, polymers, actives extraction, food, personal care and chemical tech as UV-Vis, FT-IR, Raman, H-NMR, SXRD, PXRD, SEM, TGA, HPLC, GC .and handling qualitative and quantitative data. I've been a university chemistry and statistic professor for .15 years. I'm pleased to offer my experience and knowledge for your project. If you consider my proposal adequate or require more details, you can contact me. Regards Carlos Romeri

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Experiencia

Titular Professor

Carabobo University Venezuela
sept 1994 - Presente
School of Chemical Engineering Director, Faculty of Engineering. Carabobo University, 2011-2016 Department Head of Chemical Technology. Faculty of Engineering. Carabobo University (2001). Instructor (1994), Assistant (1998), Agregate (2003) and Associate (2010) Titular( 2015) Relevant courseworks: Analytic chemistry (1994), statistics for chemical engineers (2000), organic chemistry laboratory (2003), introduction to the chemistry of polymers (2009), catalysis (2015)

Head Analytical Laboratory

Colgate Palmolive Venezuela
ene 1990 - dic 1994 (4 años, 11 meses)
Head Analytical Laboratory

General Supervisor of Quality Control

Johnson & Johnson of Venezuela
ene 1986 - dic 1990 (4 años, 11 meses)
General Supervisor of Quality Control

Educación

PhD in Chemistry, 2011

Universidad Central de Venezuela, Venezuela 2005 - 2011
(6 años)

Magister in Industrial engineering

Universidad de Carabobo, Venezuela 1994 - 1998
(4 años)

Magister in Industrial engineering

Universidad de Carabobo, Venezuela 1994 - 1998
(4 años)

Calificaciones

Promotion Program for Researcher. Accredited Professor

Scientific Council of Carabobo University.
2006
Promotion Program for Researcher. Accredited Professor

Promotion Program for Researcher. Accredited Professor

Scientific Council of Carabobo University.
2006
Promotion Program for Researcher. Accredited Professor

Stimulus Program for Research. Accredited Professor

Scientific Council of Carabobo University.
2000
Stimulus Program for Research. Accredited Professor

Publicaciones

Synthesis of vanadylporphyrins revisited

Inorganica Chimica Acta, Volume 123, Issue 1, January 1986, Pages 15-17
The reported methods for porphyrins vanadization were reviewed with the aim of optimizing a synthetic procedure, It was found that 100% metallation was obtained in 2 h with vanadylacetylacetonate in quinoline. The experiments were carried for m-tetraphenylporphyrin and octaethylporphyrin, the latter being easier to metallate.

Axial interaction of vanadyltetraphenylporhyrin with Lewis bases

Journal of inorganic chemistry. Vol 24,1603,1985
Metal contaminant in heavy oils, mainly vanadium, raise serious problems in the processes involved in the refining of crude oil. The conventtional methods used for oil demetalation consist to deposit metal over catalityc surfaces (HDM.) In order to evaluated relevance of axial coordination of basic sites in surfaces to vanadyl petroporphyrins, the interaction of Lewis bases with VOTPPP were studied, calculating the formation constant for 1:1 aducts VO(B)TPP.

Synthesis of an aluminum inorganic polymer and its use for water clarification

Journal INGENIERÍA UC. Vol. 14, No 3, 16-23, 2007
Aluminum sulfate, is chemicals for clarification. High quantities of these salts, producing high Al residual. This seems to favor neurological disorders. Substitutes needed to be developed. Four Al polymers type [Al13O4(OH)24(H2O)12]7+ at different pH are tested. The efficient was selected by jar tests and dosage is also established. Effects on color, turbidity, pH and Al residual are evaluated. Polymer at pH 4.50 and dosage 25 -45 ppm, allowed an efficient clarification.

Extraction of basil essential oil (Ocimun basilicum L.) with supercritical CO2

Journal Ciencia Vol 12 No. 4 309-314, Oct-Dec, 2004.
Carbon dioxide at supercritical conditions was used to extraction of essential oil from basil using a 1/8 factorial fractional ED. Extractios were performed by Speed SFE, results and replicates wete analyzed with ANOVA. Composition of essential extracts were determined by 3300 Varian GC FID. Extracts were waxes and oils and influential factor turned out to be: flow, cycles, temperatures extraction. Prioncipal components of oil are eugenol, linalool, benzaldehyde, zingibirene and terpinene.

Preparation of a fertilizer from the seed shell of Azadirachta indica).

Journal Ingenieria UC. Vol 11, No. 1, 35-40. 2004
Vegetable wastes can be process of biological fermentation to preserve nutrients and to take advantage of them in agriculture. A fertilizer is elaborated from Neem tree seed. Results of chemical analysis showed contents of N (0,61 %), P (0,14 %) and K (0,10 %) in seed shell, in finished compost were N (0,73 %), P (0,22 %) and K (1,9 %), for compost 1 and N (0,80 %), P (0,78 %) and K (3,54 %) for compost 2. Final products are consideredc fertilizers and improves properties grounds.

Extraction of Neem seed oil(Azadirachta indica

Journal Ciencia Vol. 13, No. 4,464-474, Oct-Dec. 2005.
Parameters and composition of no germinable seeds of neem tree are determined, samples were from local plantation usingsystematic random sampling. Seed adapst to an elipsoidal model, with a long-wide relation of 2.06 and 0.21 g average weight. MAin componentes are oil, raw fiber and proteins. Hexano - Sohxlet technique is adecuated, chemical of oils are similar to common vegetable oils, with abundant insaturated fatty (55%) y approx 70% are 18 carbons.

Mo(CO)3(NCMe)(PPh3)2: Synthesis, X-ray , catalytic activity homogeneous hydrogenation of olefins

Journal of Organometallic Chemistry, Volume 694, Issue 21, 1 October 2009, Pages 3381-3385
The Mo(CO)3(NCMe)(PPh3)2, was synthesized by reaction of Mo(NCMe)3(CO)3 with two equivalents of PPh3 and characterized by UV–Vis, IR, NMR and X-ray diffraction. This was used as a catalyst precursor for hydrogenation of 1-hexene, styrene, cyclohexene and 2,3-dimethyl- 1-butene mixtures under homogeneous media. the substrates showed reactivity order: styrene > 1-hexene > cyclohexene > 2,3-dimethyl-1-butene.

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