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Copyright of Foro Internacional is the property of El Colegio de Mexico AC and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Foro Internacional is the property of El Colegio de Mexico AC and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Economic & Business Review is the property of Economic & Business Review and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Giornale Italiano di Medicina del Lavoro ed Ergonomia is the property of Giornale Italiano di Medicina del Lavoro ed Ergonomia Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Latin American Review of Comparative Politics / Revista Latinoamericana de Politica Comparada is the property of CELAEP (Centro Latinoamericano de Estudios Politicos) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Foro Internacional is the property of El Colegio de Mexico AC and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Narrow-band multispectral remote sensing techniques and thermal imagery were investigated for water stress detection in cereal crops. Visible and near infrared AISA Eagle (Specim, Finland) and thermal AHS-160 (Sensytech Inc., USA) imageries were acquired with an airborne survey on a farm-level experimental site where maize ( Zea mays L.) and sorghum ( Sorghum bicolor L.) were grown with three different irrigation treatments. Vegetation biophysical and eco-physiological measurements were collected concurrently with the airborne campaign. Leaf fluorescence yield (Δ F / F m ′) resulted to be a good indirect measure of water stress. Therefore, Δ F / F m ′ measurements were compared against remotely sensed indicators: (i) the Photochemical Reflectance Index (PRI), (ii) the sun-induced chlorophyll fluorescence at 760 nm (F 760 ), retrieved by the Fraunhofer line depth method and (iii) the canopy temperature ( T C ) calculated decoupling soil and vegetation contributions. T C was related to Δ F / F m ′ with the highest determination coefficient ( R 2 = 0.65), followed by PRI 586 (reference band at 586 nm) ( R 2 = 0.51). The relationship with F 760 was significant but weaker ( R 2 = 0.36). The coefficient of determination increased up to 0.54 when pigment concentration was considered by multiplying Δ F / F m ′ and chlorophyll content, confirming the close relationship between passive fluorescence signal, pigment content and light photosystem efficiency. PRI 586 , F 760 and T C maps were produced in maize and sorghum plots. The differences in the average values of PRI 586 , F 760 and T C extracted from the plots with different water treatments showed that water treatments were well discriminated in maize plots by the three remotely sensed indicators. This was confirmed by the visual observation of the PRI 586 , F 760 and T C maps, while in sorghum plots, F 760 and T C appeared more sensitive to water stress compared to PRI 586 . [ABSTRACT FROM AUTHOR]

Different models driven by remotely sensed vegetation indexes (VIs) and incident photosynthetically active radiation (PAR) were developed to estimate gross primary production (GPP) in a subalpine grassland equipped with an eddy covariance flux tower. Hyperspectral reflectance was collected using an automatic system designed for high temporal frequency acquisitions for three consecutive years, including one (2011) characterized by a strong reduction of the carbon sequestration rate during the vegetative season. Models based on remotely sensed and meteorological data were used to estimate GPP, and a cross-validation approach was used to compare the predictive capabilities of different model formulations. Vegetation indexes designed to be more sensitive to chlorophyll content explained most of the variability in GPP in the ecosystem investigated, characterized by a strong seasonal dynamic. Model performances improved when including also PAR potential defined as the maximal value of incident PAR under clear sky conditions in model formulations. Best performing models are based entirely on remotely sensed data. This finding could contribute to the development of methods for quantifying the temporal variation of GPP also on a broader scale using current and future satellite sensors. [ABSTRACT FROM AUTHOR]

This article discusses the history of the Mexican political party the Partido Revolucionario Institucional (Institutional Revolutionary Party), during the period 1939-1977. The author comments on the importance of the PRI for the Spanish republican exiles living in Mexico at the time of Spanish rule under Francisco Franco. He also considers the political support offered by the Cardenas government in Mexico to the PRI. An analysis of the evolution of the foreign relations between Mexico and Spain during this period is also provided.

This paper presents a sorting method based on cosine weighting to improve the anti-jitter ability of histogram algorithm in radar signal sorting. This method uses variable and superposed boxes, into which the collected radar pulses repetition interval (PRI) falls, and the histogram increment of these boxes are normalized weighted by cosine window smoothly. Each peak position of the histogram that exceeds threshold is the estimated PRI of radar. The histogram obtained by this method is smooth and the peak is clear. Furthermore, the sub-harmonic is well restrained. Experimental result shows that this method has good anti - jitter ability. [ABSTRACT FROM AUTHOR]

Private participation in the management of water and sanitation has been firmly promoted and concentrated in a handful of countries and their urban centers. Latin America became one of the main recipients of investment in infrastructure projects involving private participation. However, private participation has accomplished neither the scale nor the benefits anticipated by its promoters. Not only have water and sanitation received only a tiny part of the total investment. These reforms and the theories from which they draw have failed to improve water sustainability and associated social values in urban areas of Latin America. This paper combines a theoretical framework drawing on neoliberalism with evidence from Mexico City and Buenos Aires to explore and reflect on some of the reasons why private participation has neither fulfilled its promoters' expectations nor improved the multiple dimensions of urban water system management. It finds that the main outcomes of the neoliberal water reform were economic (improvements in registered connection and billing). Yet, other dimensions of water such as overexploitation and contamination (environmental value), unequal access to water, and fragmented and weak institutional settings (political dimension) remain. The main lesson from the reform is that the multiple values of water cannot be addressed by merely passing water utilities along with their complex set of social and environmental problems over to private companies or public utilities. [ABSTRACT FROM AUTHOR]

Copyright of Evropska Volebni Studia is the property of Masaryk University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In this paper, a literature review about optical remote sensing (RS) of O3 stress is presented. Studies on O3-induced effects on vegetation reflectance have been conducted since late ‘70s based on the analysis of optical RS data. Literature review reveals that traditional RS techniques were able to detect changes in leaf and canopy reflectance related to O3-induced stress when visible symptoms already occurred. Only recently, advanced RS techniques using hyperspectral sensors, demonstrated the feasibility of detecting the stress in its early phase by monitoring excess energy dissipation pathways such as chlorophyll fluorescence and non-photochemical quenching (NPQ). Steady-state fluorescence (Fs), measured by exploiting the Fraunhofer line depth principle and NPQ related xanthophyll-cycle, estimated through the photochemical reflectance index (PRI) responded to O3 fumigation before visible symptoms occurred. This opens up new possibilities for the early detection of vegetation O3 stress by means of hyperspectral RS. [Copyright &y& Elsevier]

Copyright of Foro Internacional is the property of El Colegio de Mexico AC and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Mexicana de Sociología is the property of Universidad Nacional Autonoma de Mexico and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Mexicana de Sociología is the property of Universidad Nacional Autonoma de Mexico and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: Pristimerin (Pri), a natural quinone methide triterpenoid isolated from Celastraceae and Hippocrateaceae, exhibits potent antitumor activity against various cancers. However, the mechanism of apoptosis induction by Pri in oral squamous cell carcinoma (OSCC) and its anti-OSCC effect in vivo has not been widely studied.Purpose: This study aimed to investigate the anti-OSCC activities of Pri in vitro and in vivo and addressed the potential mechanisms of Pri-induced apoptosis.Methods: The effects of Pri on OSCC cells were analyzed by cell viability, colony formation and flow cytometry assays. Western blotting and qRT-PCR assays were chosen to detect the expression of proteins and genes. The anti-OSCC efficacy of Pri in vivo was evaluated by CAL-27 xenografts.Results: We showed that Pri inhibited the proliferation of human OSCC cell lines. Additionally, Pri induced apoptosis by upregulating Noxa expression. Furthermore, Pri treatment triggered excessive endoplasmic reticulum (ER) stress activation and subsequently induced c-Jun N-terminal kinase (JNK) signaling. ROS scavengers and ER stress inhibitors significantly attenuated Pri-induced OSCC cell apoptosis. Finally, Pri suppressed tumor growth in CAL-27 xenografts, accompanied ER stress activation and cell apoptosis.Conclusion: These results reveal that Pri suppressed tumor growth and triggered cell apoptosis through ER stress activation in OSCC cells and xenografts, suggesting that Pri may serve as a therapeutic agent for OSCC. [ABSTRACT FROM AUTHOR]