Sample records for NEON 20 (neon 20)
from WorldWideScience.org

Sample records 1 - 7 shown.



1

Tratamiento de defectos óseos horizontales en periodoncia con láser helio-neón/ Treatment of horizontal bone defects in periodontics with the use of helio-neon laser

Delgado Hernández, Graciela S.; Rodríguez Díaz, María del Carmen; Amaro Chelala, José Raúl; Delgado Hernández, Rita María; Garrigó Andreu, María Isela; Llanes Llanes, Eduardo
1997-12-01

Resumen en español Se realizó un ensayo clínico fase II con 60 pacientes para conocer la eficacia del tratamiento con láser helio-neón en las pérdidas óseas horizontales. Los pacientes se dividieron en 2 grupos de 30: un grupo de estudio, en el que se realizó colgajo Kirkland e irradiación con láser helio-neón en una sola dosis de 3 J/cm² en el acto quirúrgico, y un grupo control al que solamente se le realizó colgajo Kirkland. En las mediciones se utilizaron pie de rey y radio (mas) grafías periapicales. Se utilizó el equipo Lasermed 101 M de fabricación cubana con potencia de salida de 2MW y fibra óptica. Se aplicó el índice de Love para medir la eficiencia del cepillado. El 100 % de los pacientes con periodontitis simple incipiente tuvieron ganancia ósea parcial, mientras que de los que presentaban periodontitis simple moderada, el 83,3 % mostró ganancia ósea total en el 10 % del grupo tratado; sin embargo, el grupo control se mantuvo sin cambios en el 100 %. En el índice de Love los pacientes que se mantuvieron estables del grupo que había recibido tratamiento con láser presentaron valores superiores al 20 %. Se concluyó que el tratamiento con láser helio-neón en el acto quirúrgico resultó eficaz. Resumen en inglés A clinical trial phase II with 60 patients was performed to know the efficacy of helio-neon laser treatment in horizontal bone looses. Patients were divided into 2 groups made up by 30 subjects: a study groups which underwent Kirkland flap and irradiation with helio-neon laser in a single dose of 3 U/cm² during the surgical intervention, and a control group which underwent only a Kirklan flap. For the measurements periapical radiographies and a slide calliper were used. (mas) The equipment Lasermed 101 m made in Cuba with an outlet potency of 2 MW and optic fiber was used for the study. The index of Love was applied to measure the efficiency of brushing. One hundred percent of patients presenting with simple incipient periodontitis showed a partial bone gain, while the ones presenting with simple moderate periodontitis (83,3%) showed a total bone gain; however, the control group showed no changes in 100% of the case. Regarding the index of Love, patients who were stable and who were in the group receiving laser treatment showed values grater than 20%. It is concluded that the treatment with helio-neon laser during the surgical intervention was efficient.

Scientific Electronic Library Online (Spanish)

2

Evaluación del Riego Ambiental del Insecticida Metamidofos en Bioensayos con Cuatro Organismos Acuáticos no Destinatarios/ Environmental Risk Assessment of the Insecticide Metamidophos in Bioassays with Four Non-Target Aquatic Organisms

Iannacone O, José; Onofre C, Roxana; Huanqui S, Olga; Giraldo A, Jorge; Mamani P, Nancy; Miglio T, Maria C; Alvariño F, Lorena
2007-06-01

Resumen en español El objetivo de este trabajo fue evaluar el efecto ecotoxicológico del metamidofos, en dos formulaciones de diferente categoría toxicológica [Monofos®, categoría Ia (extremadamente peligroso) y Tamaron®, categoría Ib (altamente peligroso)] sobre cuatro organismos acuáticos no destinatarios: la lombriz roja Chironomus calligraphus (Goeldi, 1905) (Diptera:Chironomidae), el erizo negro Tetrapygus niger Molina, 1782 (Echinodermata: Arbaciidae), el neón tetra Paracheir (mas) odon innesi (Rabout, 1940) (Osteichthyes: Characidae) y la trucha Oncorhynchus mykiss (Walbaum, 1792) (Osteichthyes: Salmonidae). Ambas formulaciones del metamidofos provocaron un alto riesgo sobre el ambiente acuático, al encontrarse efectos sobre las larvas de C. calligraphus (Clase Ia, CL50 a 48 h = 1,32 mg i.a. L-1 y Clase Ib, CL50 a 48 h = 4,5 mg i.a. L-1), sobre la fertilización de T. niger (Class Ia, CI50 a 1 h = 1423 mg i.a. L-1 y Clase Ib, CI50 a 1 h = 608 mg i.a. L-1), en P. innesi (Clase Ia, CL50 a 96 h = 20,56 mg i.a. L-1 y Clase Ib, CL50 a 96 h = 10,13 mg i.a. L-1) y en O. mykiss (Clase Ib, CL50 a 96 h = 19,12 mg i.a. L-1). La secuencia de sensibilidad al metamidofos en ambas formulaciones fue: C. calligraphus > O. mykiss ≈ P. innesi > T. niger. En adición, se evaluaron dos efectos subletales en P. innesi, inmovilización y nado extraño, y finalmente, incremento de movimiento opercular en O. mykiss. Los cuocientes de riesgo (CR) indicaron en todos los casos un alto riesgo del metamidofos en el ambiente acuático Resumen en inglés The aim of this research was to evaluate the ecotoxicological effect of methamidophos using two formulations of different toxicological class [Monofos®, class Ia (extremely dangerous) and Tamaron®, class Ib (highly dangerous)] on four non-target aquatic organisms: bloodworm Chironomus calligraphus (Goeldi, 1905) (Diptera: Chironomidae), black sea urchin Tetrapygus niger Molina, 1782 (Echinodermata: Arbaciidae), neon tetra Paracheirodon innesi (Rabout, 1940) (Osteichthye (mas) s: Characidae); and rainbow trout Oncorhynchus mykiss (Walbaum, 1792) (Osteichthyes: Salmonidae). Both methamidophos formulations evidenced a high risk effect on the aquatic environment, finding effects on larvae of C. calligraphus (Class Ia, LC50 at 48 h = 1.32 mg a.i. L-1 and Class Ib, LC50 at 48 h = 4.5 mg a.i. L-1), on fertilization of T. niger (Class Ia, IC50 at 1 h = 1423 mg a.i. L-1 and Class Ib, IC50 at 1 h = 608 mg a.i. L-1), on P. innesi (Class Ia, LC50 at 96 h = 20.56 mg a.i. L-1 and Class Ib, LC50 at 96 h = 10.13 mg a.i. L-1) and O. mykiss (Class Ib, LC50 at 96 h = 19.12 mg a.i. L-1). The sequence of sensibility to methamidophos in both formulations was: C. calligraphus > O. mykiss ≈ P. innesi > T. niger. In addition, two sublethal effects were evaluated on P. innesi, immobilization and strange swimming, and finally an increment of opercular movement in O. mykiss. Risk quotients (RQ) indicated in all cases a high risk of methamidophos towards the aquatic environments

Scientific Electronic Library Online (Spanish)

3

Warm Molecular Hydrogen and Ionized Neon in the HH2 Outflow

Moro-Martin, A.; Noriega-Crespo, A.; Cesarsky, D.; Cabrit, S.; Cernicharo, José; Lefloch, Bertrand
2003-05-07

Digital.CSIC (Spain)

4

Study of neutron rich neon isotopes

Tengblad, Olof; García Borge, María José; Johannsen, L.; Jonson, B.; Lindroos, M.; Nilsson, T.; Nyman, G.

5 pages, 4 figures, 2 tables.-- PACS nrs.: 27.30.+t; 21.90.+f; 23.90.+w. | The half-lives and P(n)-values of the neutron rich isotopes Ne-26-29 have been determined. The results are compared to shell-model calculations and good agreement is found except for Ne-29, where the half-life exceeds the pre...

DRIVER (Spanish)

5

Study of neutron rich neon isotopes

Tengblad, Olof; García Borge, María José; Johannsen, L.; Jonson, B.; Lindroos, M.; Nilsson, T.; Nyman, G.; Poves, A.; Ravn, H. L.; Retamosa, J.; Riisager, K.; Sona, P.; Wilhelmsen, K.
1992-09-01

Digital.CSIC (Spain)

7

Aptitud biológica de poblaciones de Bemisia tabaci (Gennadius) Biotipo B (Hemiptera: Aleyrodidae) con diferente susceptibilidad al insecticida thiametoxam/ Fitness of Bemisia tabaci (Gennadius) B Biotype (Hemiptera: Aleyrodidae) populations with different levels of susceptibility to the thiametoxam insecticide

Campuzano-Martínez, Aidee; Rodríguez-Maciel, J Concepcion; Lagunes-Tejeda, Ángel; Llanderal-Cázares, Celina; Terán-Vargas, Antonio P; Vera-Graziano, Jorge; Vaquera-Huerta, Humberto; Silva-Aguayo, Gonzalo
2010-06-01

Resumen en inglés In two field-collected populations of de Bemisia tabaci (Gennadius) B biotype previously selected with the neonicotinoid insecticide thiamethoxam (NEO-R, NEO-N), and a population susceptible to insecticides (SUSC), the level of response to the insecticide thiametoxam, as well as the life and fertility tables were determined. At LC95, the NEO-R population showed a resistance ratio (RR95) value of 8.8-fold, an intrinsic rate of increase (r m) of 0.72. The fitness of the NEO (mas) -R and NEO-N populations in relation to the SUSC was 1.5 and 2.0, respectively. The RR95 value for NEO-N was 1.9-fold; it's r m value was 0.082, while in the SUSC population was 0.041. The developmental time of egg and adult were longer in NEO-R population, while the nymph and pupa lasted longer in the NEO-N and SUSC populations. The developmental time was different in the three NEO-R, NEO-N, and SUSC populations with 19.7 d (315.84 degree days or dd), 15.7 d (250.4 dd) and 18.5 d (296.6 d), respectively. The populations previously selected with thiamethoxam did not reproduce faster than their susceptible counterpart.

Scientific Electronic Library Online (Spanish)