Secondary Standards Research Articles

Identification and Prioritize Strategic Directions and Initiatives of Sustainable Supply Chains Based on Reversed Logistic Through Phase Multi-Criteria Modeled

Return and renewed using of used products has changed one of the logistic important activities with early development of industries, this caused to doing rules on this basis and also increasing awareness among people for keeping living-environment and decreasing wastage. Therefore industries need strategic programming and ripple initiatives of stable securing. Therefore the aim of this research was identification and prioritize strategic directions and initiatives of sustainable supply chains based on reversed logistics through phase multi-criteria models (case study: Dena Shiraz tire industry Company). This research was done in two different phases; in first phase, standards of strategic orientations and ripple initiatives of stable securing was identified and deciphered based on reversed logistic, based on study of scientific texts and taking ideas of expert persons (5 basic standards and 28 secondary standards) and alighted basis of questionnaire preparation. In second phase, identified standards was prioritized through phase multi-criteria models and taking ideas of expert persons of tire industry.

Transmission of Highly Stable Time Signals Over Optical Fiber Communication Lines

We present the results of investigations of an installation aimed at the transmission of highly stable 1 PPS time signals from the hydrogen time and frequency standard over a 150 km optical fiber communication line with the use of active electronic compensation of time delays. The error (mean-square deviation) of transmission of time signals does not exceed 80 psec on the daily interval of averaging. The installation enables us to guarantee the synchronization of the time scales of remote time and frequency standards included in the primary and secondary standards of time and frequency units.

Assessing the risk factors of suicide among adolescents and evaluating the knowledge on suicide prevention at Goalpara, Assam

Background of the Study: A study was conducted to assess the risk factors of suicide among adolescents and evaluate the knowledge on suicide prevention in selected colleges of Goalpara district, Assam. Aims: Aims of the study were to reduce suicide rate among adolescents by creating awareness, provide knowledge on risk factors of suicide and suicide prevention. Objectives: 1.To assess the risk factors of suicide among adolescents in control and experimental group before intervention. 2.To assess the knowledge on suicide prevention among adolescents in control and experimental group before and after intervention. 3.To evaluate the effectiveness of structured teaching programme on increasing knowledge suicide prevention among adolescents of experimental group. Materials and Methods: It was a quantitative approach, quasi experimental study with pre test-post test and control group design. Purposive non random sampling technique was used to select the sample. The study was conducted in two colleges with 80 students, 40 in each control and experimental group. Adolescents selected for the study were the students between the age group of 16-19 years and were studying higher secondary standard. Self administered structured questionnaire was used which consist of three part related to socio-demographic data, risk factors of suicide and knowledge on suicide prevention. Structured teaching programme was conducted to the experimental group which included knowledge on suicide prevention. Results: There was significant difference ('t'=14.607, p=0.000) between control and experimental group in the post test of knowledge on suicide prevention. The overall post test knowledge score on suicide prevention showed that majority of the respondents acquired good knowledge in experimental group. The results indicated that adolescents suicide can be prevented by increasing knowledge, awareness and developing positive attitude.

Intercomparaciones a nivel de radioprotección con cámara de ionización de transferencia en la calidad de radiación 137Cs

En el presente trabajo se exponen la metodología y los resultados obtenidos de los ejercicios de intercomparación que fueron adelantados por el Laboratorio Secundario de Calibración Dosimétrica (LSCD) del Servicio Geológico Colombiano en los años 2016 y 2017, con el Laboratorio Secundario del Centro de Protección e Higiene de las Radiaciones (CPHR), de Cuba, y el Laboratorio de Dosimetría del Organismo Internacional de Energía Atómica (OIEA), mediante la calibración de cámaras de transferencia en la magnitud tasa de kerma en aire con haz de 137Cs por el método que usualmente sigue cada laboratorio. De dichos ejercicios se obtuvieron resultados satisfactorios con respecto a la metodología de calibración normalizada que es implementada en el LSCD, la cual a su vez brinda confiabilidad en sus resultados y en la trazabilidad de las magnitudes operacionales en las medidas de campo de los instrumentos utilizados en protección radiológica en Colombia.

Emission probability of the 66.7 keV γ transition in the decay of Tm171

The {\gamma}-emission probability of the 66.73 keV line in the decay of 171Tm has been experimentally determined using {\gamma}-spectrometry and inductively coupled mass spectrometry. Using a set of two reference sources, namely 60Co as primary standard and 44Ti/44Sc in secular equilibrium as secondary standards, we were able to deduce the detection efficiency at 67.87 keV of the used {\gamma}-spectrometry setup with high precision. The emission probability of the 66.73 keV {\gamma}-transition in the decay of 171Tm has been determined with a set of three radioisotopically pure 171Tm samples to be 0.159(6) %.

Atmospheric pollutants: modeling with Aermod software

In the operation of thermoelectric power plants, fossil fuels are burned, generating air pollutants such as carbon monoxide (CO), nitrogen oxide (NOX), particulate matter (PM), sulfur dioxide (SO2), and volatile organic compounds (VOCs). Accordingly, the objective of this study was to simulate the dispersion of atmospheric pollutants from the Borborema S.A thermal power plant, using the Aermod View program as a tool to evaluate the concentrations resulting from the simulation and to make comparisons with allowable levels according to current law. Thus, the emission sources of chimney air pollutants of a thermal power plant in 2016 were evaluated using the Aermod View, Aermet View, and WRPLOT View software. Regarding the pollutants generated, NOx values at 1 h showed NO2 concentration over the primary and secondary standards allowed by law, with a maximum concentration of 1680 μg/m3, about five times higher than the primary standard and eight times the secondary. The simulation indices for the concentrations of PM, SOx, NOx, and CO, even though they are appeared very low, except NO2 at 1 h, it was observed that these pollutants can affect the health of the local population, fauna and flora, in view of the process of bioaccumulation, which is inherent to organisms, which directly or indirectly absorb substances or chemical compounds.

Municipal wastewater treatment costs with an emphasis on assimilation wetlands in the Louisiana coastal zone

In recent decades, water quality standards for wastewater treatment have become more stringent, increasing costs and energy required to reduce pollutants. Wetland assimilation is a low-cost and low-energy alternative to traditional tertiary wastewater treatment where secondarily treated and disinfected municipal effluent is discharged primarily into freshwater forested wetlands in coastal Louisiana. In this paper, costs per gallon of treatment capacity for conventional secondary and tertiary treatment were compared to those for assimilation wetlands. Cost analysis reports were used to determine costs per gallon of treatment capacity for conventional wastewater treatment facilities, including costs for conveyance between the collection system and the assimilation wetland site, and between the treatment and disposal sites if they could not be co-located. Capital and operation and maintenance costs were considered. Because all wastewater treatment plants are required to treat at least to secondary standards, costs for primary and secondary treatment were combined. If necessary, these costs were adjusted for inflation to 2017 dollars using an average inflation rate of 2.19 percent and a cumulative inflation rate of 50.84 percent. To determine costs per gallon of treatment capacity for assimilation wetlands, actual costs provided by the project engineer were used when available. To simulate the future costs of facility construction and compare the replacement costs of conventional secondary and tertiary wastewater treatment facilities and treatment wetlands in the context of energy prices, U.S. Bureau of Labor and Statistics (BLS) data for the price index for inputs to construction were used, as were the Energy Information Administration (EIA) data for the price of crude oil to model future wastewater treatment plant construction and operation costs. The cost for the Mandeville assimilation wetland included $1 million for the price of the land. Future costs of treatment facility construction and operation were modeled relative to average price of construction inputs between 1998 and 2015 using the projected price of crude oil. When treatment costs were compared among secondary, tertiary, and assimilation wetlands, mean cost for assimilation wetlands was $0.60 per gallon (>1 MGD capacity) compared to $4.90 and $6.50 per gallon for secondary and tertiary treatment, respectively. The lower total costs and energy requirements for assimilation wetlands result in lower variability in the price of construction and operation. Wetland assimilation is more economical than conventional wastewater treatment, especially compared to advanced secondary and tertiary treatment. It is likely that energy costs will increase significantly in coming decades. Because conventional secondary and tertiary treatment are energy intensive, increases in energy costs will significantly increase the costs of these treatment systems. Treatment systems that combine lower technology (e.g., oxidation ponds) secondary treatment with wetland assimilation are less likely to be impacted by rising energy costs than traditional wastewater treatment.

Characterization of a force-balanced piston gauge as a primary pressure standard

This work characterizes a force-balanced piston gauge (FPG), model FPG8601, as a primary pressure standard over its whole operation range from 1 Pa to 15 kPa. To date, FPGs have been handled as secondary standards that are usually calibrated against pressure balances at pressures above 5 kPa. Starting from dimensional measurements on the FPG piston-cylinder assembly (PCA), 3-dimensional data sets were created that presented the radius of the piston and the cylinder bore along the selected circle and generatrix traces with uncertainties of about 50 nm for the piston and 30 nm for the cylinder. Using this dimensional data and modeling the gas flow in the PCA gap, the effective area of the PCA was determined over the whole pressure range for absolute and gauge operation modes. In the pressure distribution calculation, the methods of the rarefied gas dynamics were applied, and the effect of the change from viscous via transient to molecular flow mode on the effective area was quantified and found to have a relative value of 1.5·10−6. The theoretical effective areas are compared with the experimental areas obtained by means of a calibration against a deadweight pressure balance, and the result shows a reasonable agreement within a relative value of 8·10−6.

Whole-Class Implementation of the Self-Determined Learning Model of Instruction in Inclusive High School Mathematics Classes

Abstract Skills associated with self-determination (e.g., self-regulation, problem solving, goal-setting, planning) are infused throughout all secondary content standards, including career and college readiness standards for which all students are responsible. Given research demonstrating the link between self-determination and positive school and post-school outcomes, there is a need to examine the implementation and outcomes of instruction related to self-determination in inclusive general education classrooms. This article reports findings of a one-group, pretest-posttest design examining the impact of the Self-Determined Learning Model of Instruction (SDLMI), a model of instruction designed to be implemented by teachers to support students to learn skills associated with self-determination, on goal achievement of adolescents with and without disabilities in inclusive high school Algebra classrooms. Findings suggest that participants with and without disabilities attained educationally-relevant goals related to math following intervention. Directions for future research and practice are discussed.

First 10Be measurements at Trondheim 1 MV AMS

The performance of the Trondheim 1 MV AMS system for 10Be measurements has been investigated. While the initial acceptance tests were done using the 1 + 1+ charge state, we concluded that the 2 + 2+ charge state offers superior measurement conditions. With this setting, the source-to-detector efficiency is 5.4 ± 0.2% and a 10Be/9Be background level of 3.4 ± 0.8·10−15 was achieved. Standard samples (n = 14) with a high 10Be content of 10Be/Be = 2.7·10−11 could be reproduced to a 0.4% precision, leaving counting statistics as the limiting uncertainty for most samples. The accuracy of the system was also tested using 5 secondary standards of different 10Be content. The results corroborate the precision achieved with the standard sample and demonstrate the accuracy of the system.

Capacity Simulation Method Based on Regional Transfer Matrix and PM2.5 Concentration Target Constraint

Atmospheric environmental capacity is an important reference in environmental planning. To meet the PM2.5 standard, a new method is proposed to balance the capacity among cities of Guangdong, with screening of the most unfavorable meteorological year and combining it with the regional transportation calculated by the CAMx-PSAT module. Pollutant overloading and capacity scenarios were also calculated. The results showed that, under the constraints of the cities' annual PM2.5 ≤ 35 μg·m-3, the capacities of SO2, NOx, NH3, and PM2.5 in Guangdong were about 6.8×105 tons, 1.35×106 tons, 4.6×105 tons, and 5.1×105 tons, respectively. Based on the benchmark scenario, SO2 emissions in Guangdong were overloaded by 10%, and the emissions of NOx, NH3, and PM2.5 exceeded by 12%, 9%, and 20%, respectively, compared to those of the capacity scenario. Ranked by the number of overloaded species in Guangdong, the cities of Guangzhou, Foshan, Zhongshan, and Qingyuan were on top. When achieving the capacity scenario, the annual PM2.5 concentration in Guangdong was about 30 μg·m-3, which meets the national secondary ambient air quality standard.

Water metal contaminants in a potentially mineral-deficient population of Haiti

ABSTRACTThis study aimed to characterize metal contaminant concentrations and assess temporal and spatial variability in the main drinking water sources of Cap-Haïtien, Haiti. Water sources from five communities were sampled in two seasons, June (2014) and October (2014), and analysed for a suite of metals. A geographic information system was used to examine the spatial distribution of sampling points. Metal concentrations were below the US Environmental Protection Agency (USEPA) primary drinking water standards. Mean manganese concentrations were comparatively higher in wells (254.5 µg/L), exceeding the USEPA secondary drinking water standard (50 µg/L). Higher mean Mg/Ca and Ba/Ca ratios (range 2.3–3.4) may indicate different interactions between seawater and groundwater throughout the year. Although metal concentrations were within the limits of the USEPA drinking water standards, emerging contaminants, such as manganese, showed concentrations in excess of recommended limits. These metals may interact with background nutritional status with potential implications for growth and development.

Investigating NOx Concentrations on an Urban University Campus Using Passive Air Samplers and UV–Vis Spectroscopy

Gas-phase nitrogen oxides are important in the formation of tropospheric ozone. NOx (NO and NO2) as well as tropospheric ozone have been shown to have negative effects on human health. Therefore, accurately measuring NOx concentrations in the atmosphere is important. In this laboratory experience, students measured ambient NOx concentrations using a relatively simple and inexpensive passive sampling/UV–vis spectroscopy technique. The students used two different types of spectrophotometers to determine limits of detection and ambient NOx concentrations. Data demonstrated both spectrometers behaved similarly, proving laboratories utilizing different spectrophotometers could accurately perform the experiment. Although not statistically verified due to the limited number of passive samplers employed in the pilot experiment, measured NOx concentrations were similar to those calculated by a local air quality model (within approximately 50 parts per billion). At the end of the laboratory experience, students compared their measured NO2 concentrations to the United States Environmental Protection Agency’s primary and secondary standard of 53 parts per billion (annual mean). The initial learning goals of the experiment included the following: the successful creation of calibration curves, the determination of spectrophotometer limit of detection, and the calculation of ambient NOx concentrations. The experiment is appropriate for students enrolled in analytical and environmental chemistry courses.

Vacuum Transfer Equipment for M-one

The dissemination method after redefinition of mass unit will be changed from Planck constant to primary mass standard and from primary mass standard to secondary mass standard. The measurement of weights under vacuum will replace the measurement of weights in air. M-one manufactured by Mettler-Toledo company is a product for measuring the mass of an object under vacuum. In order to transfer weights from vacuum vessel to M-one, a vacuum transfer equipment (VTE) is developed by National Institute of Metrology, China (NIM). A multistage manipulator system is designed to transfer weight under vacuum between VTE and M-one. The experimental results show that the performance of VTE is efficient for transferring the weights under vacuum.

OA028] On the potential of direct MV calibration of ionization chambers by secondary standards laboratories

Purpose The IAEA protocol (TRS-398) for absorbed dose to water measurements in therapeutic MV photon beams, recommends that ionization chambers be calibrated directly in MV accelerator photon beams rather than in cobalt-60 combined with generic beam quality correction factors ( k Q ) tabulated in the protocol. The purpose of this work was to study the feasibility for secondary standards laboratories to provide direct MV calibrations for hospitals and to evaluate the benefit of such calibrations versus conventional cobalt calibrations. Methods A laboratory with the potential to provide direct MV calibrations was established. It includes both a cobalt irradiator and a linear accelerator with the following MV beams: 4, 6, 10, 15, and 18 MV with flattening filter and 6 and 10 MV without flattening filter. Procedures were designed for accurate positioning of ionization chambers, beam output monitoring and relevant ionization chamber correction factors. Over a two-month period, k Q -factors were measured in all beams for seven nominally identical chambers (IBA FC65G) covering a wide range of serial numbers. Traceability to primary standards were established using transfer chambers. The results were compared with published k Q -factors from TRS-398. Results The monitoring of beam output using an external monitor chamber was found to be essential for calibration purposes: The raw accelerator output changed systematically by 0.4% over the measurement period. However, with an external monitor chamber, the output variability was reduced to less than 0.05% (1 sd). For each beam quality, the relative standard deviation for the measured k Q factors for the seven ionization chambers was about 0.07%. Conclusions The study demonstrates the feasibility of highly reproducible MV calibrations at the level of a secondary standards laboratory, and the closeness of agreement (sd k Q -factors may be adequate for the tested ionization chamber model. Ongoing work focuses on characterization of additional ionization chambers models (PTW30013, PTW31021, and NE2571) and on an improved estimation of the uncertainty related to establishing traceability to primary standards. The latter work includes direct use of water calorimetry in the specific accelerator beams of the laboratory.

P037] Implementation of a new free-air ionization chamber as a primary air kerma standard for mammography radiation qualities

Purpose The Physikalisch-Technische Bundesanstalt (PTB) offers air kerma calibrations of secondary standards for standard dosimetry laboratories worldwide. Due to the significant increase in the demand for such calibrations in mammography X-ray beams (tube high voltages ranging from 20 kV to 50 kV), it was decided to construct and manufacture a novel free-air ionization chamber (FAC) with a design especially optimized for radiation qualities used in mammography. This work describes the final technical construction of the new FAC and its implementation as a primary air kerma standard at PTB. Methods The new FAC is of the parallel-plate type optimized for the photon energy range of 5 keV to 50 keV. Special emphasis has been given to the design of a chamber without potential wires in the beamline to minimize the scattering and attenuation of the X-rays. The design of the chamber was optimized with respect to electrical field homogeneity using the software package SIMION Version 8.1. This software was also used to calculate k d , the correction factor for the distortion of the electric field of the final chamber design. The other correction factors for photon attenuation, scattering, aperture transmission and scattering, electron loss and violating charged-particle equilibrium have been calculated using the user code ’egs_fac’ of the EGSnrc Monte Carlo transport simulation software package. Finally, air kerma rates measured with the PK50, the new free-air chamber, were compared with those measured with the other well-established primary air kerma standards of PTB. Results The PK50 was fully characterized by all the necessary correction factors. The correction for the field distortion is below 0.8%, thus the design goal has been achieved. For the ISO narrow series, the correction factors calculated with egs_fac are below 1.0%, proving that the chamber is well optimized for energies below 50 keV. Comparisons of air kerma measurements with the PK50 and established FACs yielded results which were consistent within the uncertainties of a few parts in 1000. Conclusions The new chamber designated as the PK50 is now ready for use as a primary air kerma standard for low-energy X-rays at PTB.

Sources of uncertainty in annual global horizontal irradiance data

The major sources of uncertainty in short-term assessment of global horizontal radiation (G) are the pyranometer type and their operation conditions for measurements, whereas the modeling approach and the geographic location are critical for estimations. The influence of all these factors in the uncertainty of the data has rarely been compared. Conversely, solar radiation data users are increasingly demanding more accurate uncertainty estimations. Here we compare the annual bias and uncertainty of all the mentioned factors using 732 weather stations located in Spain, two satellite-based products and three reanalyses.The largest uncertainties were associated to operational errors such as shading (bias = −8.0%) or soiling (bias = −9.4%), which occurred frequently in low-quality monitoring networks but are rarely detected because they pass conventional QC tests. Uncertainty in estimations greatly changed from reanalysis to satellite-based products, ranging from the gross accuracy of ERA-Interim (+6.1-6.7+18.8%) to the high quality and spatial homogeneity of SARAH-1 (+1.4-5.3+5.6%). Finally, photodiodes from the Spanish agricultural network SIAR showed an uncertainty of -5.4+6.9%, which is far greater than that of secondary standards (±1.5%) and similar to SARAH-1. This is probably caused by the presence of undetectable operational errors and the use of uncorrected photodiodes. Photodiode measurements from low-quality monitoring networks such as SIAR should be used with caution, because the chances of adding extra uncertainties due to poor maintenance or inadequate calibration considerably increase.

The new AMS facility at Tianjin University

Accelerator mass spectrometry (AMS) has been used for the analysis of a lot nuclides in many scientific fields and is one of the most optimal methods to determine very low concentrations of long-lived nuclides. The XCAMS system is an extension of the Compact $$^{14}\mathrm{C}$$ Accelerator Mass Spectrometer for $$^{10}\hbox {Be}$$ and $$^{26}\hbox {Al}$$ . A description of the first Chinese XCAMS system and initial performance of three nuclides of $$^{14}\hbox {C}$$ , $$^{10}\hbox {Be}$$ , and $$^{26}\hbox {Al}$$ , respectively, will be reported. Solid sample material (graphite, $$\mathrm{Al}_{2}\mathrm{O}_{3}$$ , and $$\mathrm{BeO}$$ ) is loaded into cathode holders for AMS analysis. The negatively charged ions ( $$\mathrm{C}^{-}, \mathrm{Al}^{-}, \mathrm{and }\, \mathrm{BeO}^{-}$$ ) are extracted and accelerated to the terminal, broken-up, and some orbital electrons stripped off to form positively charged atomic ions, and accelerated further. In the post-acceleration region, the magnetic and electrostatic devices act on momentum and energy analysis, respectively. A multi-anode detector is used for the identification and detection of relevant isotopes and isobars. The test criteria of three rare isotopes each were set for beam current intensity, measurement precision, and machine background. The corresponding material and cathode holder were, respectively, used for $$^{14}\hbox {C}$$ , $$^{10}\hbox {Be}$$ , and $$^{26}\hbox {Al}$$ test. Several batches of real sample have already been analyzed by the new AMS system based on the acceptance test results. In addition, several secondary standards were measured to check the stability of the system. The new XCAMS facility has been installed successfully, and the latest performance also showed that the machine is reliable enough, in general. Both the hardware components and software system were in good condition for accurate and precise data analysis in the near future.

Report on the 6th International Meeting of the IUGS Lower Cretaceous Ammonite Working Group, the Kilian Group (Vienna, Austria, 20th August 2017)

The 6th Kilian Group meeting of the IUGS Lower Cretaceous Ammonite Working Group (the Kilian Group) was held in Vienna, Austria, 20th August 2017. The Group mainly discussed the standard zonation that is suitable for and based mainly on ammonite data of the Mediterranean Province of the Mediterranean–Caucasian Subrealm (Tethyan Realm). Some changes have been made on three stages. The uppermost part of the Berriasian is now characterised by the Tirnovella alpillensis Zone, that is subdivided into a lower T. alpillensis Subzone and an upper “Thurmanniceras” otopeta Subzone; the T. alpillensis (Sub-)Zone is here defined by the first appearance datum (FAD) of the index-species. For the Valanginian, the Neocomites premolicus Subzone is introduced in the lower part of the “Thurmanniceras” pertransiens Zone. The FAD of N. premolicus occurs at the base of the “T.” pertransiens Zone. So this subzone starts at the base of the “T.” pertransiens Zone and provisionally ends at the last occurrence of N. premolicus as the upper part of the zone is not characterised by a subzone for the moment. For the Barremian, the former Holcodiscus fallax, Nicklesia didayana, Heinzia communis, Subtorcapella defayae, Coronites darsi, Heinzia caicedi and Anglesites puzosianum horizons have been abandoned. In agreement with systematic positions, the term “auctorum” is deleted for Taveraidiscus hugii, the index-species of the first zone of this stage. The Kotetishvilia compressissima Zone is subdivided into a lower Holcodiscus fallax Subzone and an upper Holcodiscus caillaudianus Subzone. The Barrancyloceras barremense Subzone (upper subzone of the Toxancyloceras vandenheckii Zone) is replaced by the Gassendiceras alpinum Subzone. The Imerites giraudi Zone is kept but its base should be now defined by the FAD of I. dichotomus, which marks the inception of the genus Imerites. For certain stratigraphic intervals the Group discussed and in some cases strengthened the previous correlations between the standard Mediterranean zonation with the different ammonite zonal schemes of other provinces and realms. Some members of the Group presented the possibility of using regional stages as secondary standards, in accordance with the recommendations of the International Commission on Stratigraphy. The report concludes with an appreciation of the French ammonitologist Jean-Pierre Thieuloy deceased in 2017, the nomination of a vice-chair, membership, future work and next meeting of the Kilian Group.

Immunometabolic regulation by triterpenes of Eucalyptus tereticornis in adipose tissue cell line models

Eucalyptus tereticornis Sm (Myrtaceae) is a plant used in traditional medicine to control obesity, insulin resistance and diabetes. Chronic adipose tissue inflammation is involved in generating insulin resistance, the greatest risk factor in developing type 2 diabetes mellitus and cardiovascular disease. In the present study, a mixture of triterpenes, as obtained from the starting plant material, was evaluated in inflamed adipose tissue cells models. Our goal is to advance into the understanding, at the cellular level, of the immunometabolic effects of the triterpene mixes from Eucalyptus tereticornis in in vitro models of mouse and human adipose tissues. Triterpene mixes were obtained from Eucalyptus tereticornis leaves by organic extraction. The major compounds of these mixes were identified by 1H NMR and 13C NMR in addition to HPLC using primary and secondary standards of ursolic acid, oleanolic acid and ursolic acid lactone. To provide an approach for evaluating the cellular and molecular mechanisms through which triterpene mixes act to modify the metabolic processes associated with obesity, mouse macrophage and adipocyte cell lines, human macrophage cell line and primary culture of human adipocytes were used as models. Adipocytes treated with the two natural chemically characterized triterpene mixes partially reduce lipogenesis and leptin expression. Additionally, an increase in the transcriptional expression of PPARγ, and C/EBPα is observed. In macrophages, these triterpene mixes, decrease the transcriptional and translational expression of pro-inflammatory cytokines, such as interleukin-6 (IL-6), interleukin 1β (IL-1β) and tumoral necrosis factor α (TNFα). Conditioned medium of 3T3-L1 adipocytes treated with the triterpene mix shows a stronger anti-inflammatory response on activated J774A.1 macrophages. The mixtures of the three triterpenes in the proportions obtained from the plant material may act on different components of the cell, generating a different response, which, in some cases, is more powerful than that seen when exposure to only two triterpenes. It makes this three triterpenes mix a good phytotherapeutic prototype for pathologies as complex as those associated with obesity.