Search

Currently, textile companies and industries in general dispose of a large amount of effluents which have a high amount of toxic substances, among them are colorants, mostly used in textile industries. Faced with this problem, treatment techniques or methods arise for the elimination of these colorants, among them is one of the most important as the adsorption method that is characterized by its effectiveness in the removal of colorants, the resulting activated carbon being the main However, this adsorbent agent is sometimes very expensive, so an ecological and low-cost alternative is the use of agro-industrial or agricultural residues as adsorbent agents. In this research, information is collected about agro-industrial residues that can eliminate dyes and assessing their adsorption effectiveness. By means of the PRISMA method and by means of a search strategy, 48 articles were obtained, which we dedicated to carrying out and achieving the objective of the research. [ABSTRACT FROM AUTHOR]

Copyright of Congreso Internacional de Investigacion Academia Journals is the property of PDHTech, LLC 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 Congreso Internacional de Investigacion Academia Journals is the property of PDHTech, LLC 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 Congreso Internacional de Investigacion Academia Journals is the property of PDHTech, LLC 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.)

Introduction: Prostate Cancer (CaP) is a malignant neoplasm where one of the main treatment options is radiotherapy (RT). However, traditional RT treatment planning criteria omit radiobiological aspects for optimization. This work intends to determine the survival rate; survival values that will be taken as reference to evaluate the radiobiological optimization in a future phase. Methods: A cohort of 400 patients was taken and divided into 4 groups. Groups I and II were treated with 3D Conformal Radiotherapy (3D-CRT) technique with an absorbed dose per fraction of 1.8 Gy and 2.65 Gy with linear accelerator, while groups III and IV were treated with Stereotactic Body Radiation Therapy (SBRT) technique with an absorbed dose per fraction of 7 Gy and 7.25 Gy with Cyberknife. The biochemical failure of the treatment was determined with the Phoenix criterion, which consists of considering an increase of 2 ng/ml or more over the Prostate Specific Antigen (PSA) nadir. The follow-up period for patients is 43 months on average. Two contingency tables 2 x 2 are constructed: a) one for frequency of cure and failure, and b) other for the probability of survival. Results and discussion: From the statistical analysis of the contingency tables we obtained: an average survival rate of 92.9%, we also considered subcategories of risk (low, medium and high) and hormonal deprivation. Taking the conventional treatment and the tumor control probability as a control group, the Cochran-Mantel-Haenszel test was applied and a common odds ratio of 0.8226 was obtained, which means that the hypofractionated treatments have a higher survival rate of 17.74% than the standard fractionation treatment. Also, we have the MHC statistic value = 0.0281, df = 1 and p-value = 0.8668, then there is no significant difference for the subcategory of risk. Conclusions: An average survival rate of 92.9% was determined in cohorts of Mexican patients treated at the Centro Médico Nacional Siglo XXI, Hospital de Oncología with both RT fractionation. Comparing these results with those published in the USA for the cure rates of CaP that report 97.8% for all ages and races. Therefore, there is the possibility of improving these survival rates for Mexican patients. [ABSTRACT FROM AUTHOR]

This contribution reports the organization and celebration after the Covid-19 pandemic of a singular scientific conference focused on early-career researchers from the Spanish universities of Santiago de Compostela and Salamanca: the "I Northwest Meeting of Young Researchers in Optics (I NW MYRO)". [ABSTRACT FROM AUTHOR]

Copyright of Congreso Internacional de Investigacion Academia Journals is the property of PDHTech, LLC 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.)