MaxEnt-Simulated Site Suitability Model for Adlai (Coix lacryma-jobi. L.) in Bukidnon, Philippines

To create a baseline and projected site suitability models for Adlai and assess the effects of climate change on the distribution of the species, 52 species occurrence points (SOPs) and 14 bioclimatic variables were used. Subsequently, purposive sampling was adopted to collect SOPs, while bioclimatic variables were obtained from a credible online source. The results showed that 245,980 hectares in the province are suitable for species based on the model. To determine the impact of climate change, the projected suitability modeled over 30 years was used, showing an increase from 245,980 hectares to 391,872, an increase of 145,892 hectares. Most of the projected suitable areas are in the southern part where some towns have almost 100% suitability coverage. The prediction accuracy of the model was excellent at 92% based on the Receiver Operating Characteristic-Area Under Curve (ROC-AUC). The bioclimatic variable with the most important contribution is AP12 (annual precipitation) which obtained 24.74%. The information generated in this research is essential for interested sectors in planning, targeting, and prioritizing strategic areas for Adlai investment programs

Nouvelles méthodologies pour le clivage oxydant de doubles liaisons d'acides gras

Industrial production of two high added value compounds called pelargonic acid and azelaic acid is made possible by the ozonolysis reaction of oleic acid. However, this method has numerous disadvantages in term of ecological impact. In this dissertation, we present an alternative to the current industrial process in order to lower direct or indirect negative environmental impacts when synthetizing azelaic and pelargonic acids. At first we demonstrate that a two-step oxidative cleavage may be preferable to a one-step cleavage. Then we present in details a novel synthesis method which starts with the dihydroxylation of the fatty acids double bond using a well known method, followed by the oxidative cleavage in presence of sodium hypochlorite. One notes that this original fabrication process developed in our laboratory does not require to use transition metals nor organic solvents. As a complement to this work, we have subsequently studied the sodium hypochlorite to determine its role and operating mode in the vicinal diols cleavage reactionAu niveau industriel, l'accès aux acides azélaïque et pélargonique, composés à forte valeur ajoutée, est possible grâce à une réaction d'ozonolyse de l'acide oléïque. Cependant, cette méthode présente certains désavantages sur le plan écologique. Le but de cette étude a donc été de développer une méthode alternative à ce procédé industriel, visant à limiter autant que possible les impacts écologiques, directs ou indirects, lors de la synthèse des acides azélaïque et pélargonique. Nous avons ainsi montré qu'un clivage en deux étapes peut être préférable à un clivage oxydant en une étape. Notre procédé propose ainsi, dans un premier temps, une dihydroxylation de la double liaison d'acides gras par une méthode connue, laquelle est suivie par un clivage oxydant en présence d'hypochlorite de sodium. Ce nouveau procédé mis au point au sein du laboratoire présente l'avantage de ne nécessiter l'emploi ni de métaux de transition, ni de solvant organique. Nous avons par la suite étudié l'hypochlorite de sodium afin de déterminer son rôle et son mode d'action dans la réaction de clivage de diols vicinau

Influencia de la ley de contrataciones respecto a la recepción y conformidad de prestaciones en una municipalidad distrital - 2022

La presente tesis tiene como objetivo general determinar de qué manera la Ley de Contrataciones del Estado actual influye en la ejecución respecto a la recepción y conformidad de prestaciones en una Municipalidad Distrital - 2022, se plantea como hipótesis general que la Ley de Contrataciones del Estado actual es deficiente en lo que respecta a la regulación de la ejecución de obras en la etapa de recepción y conformidad, empleando una investigación básica no experimental. Asimismo, como objetivo general el determinar de qué manera la ley de contrataciones del Estado actual, influye en la ejecución respecto a la recepción y conformidad de prestaciones en una Municipalidad Distrital – 2022. Resultó que la mayoría encuestada considera un nivel medio respecto a las preguntas formuladas sobre la calidad de las normas y su campo de aplicación, también, un nivel medio en cuanto a que las obras son entregadas con la respectiva conformidad a las entidades contratantes. Se concluyó que resulta necesario fortalecer normativamente la recepción y conformidad de las obras pues en esta etapa se determina la calidad con la que fueron ejecutadas, condición importante dado que se debe tomar en cuenta que de ello depende una adecuada prestación de servicios para la comunidad

Innovative algorithm to evaluate the capabilities of visual, near infrared, and infrared technologies for the detection of veins for intravenous cannulation

Intravenous cannulation is the process of inserting a cannula into a vein to administrate medication, fluids, or to take blood samples. The process of identification and of locating veins plays an important role during the intravenous cannulation procedure to reduce health care costs and the suffering of patients. This paper compares the three technologies used to assess their suitability and capability for the detection of veins to support the cannulation process. Three types of cameras are used in this study; a visual, an infrared, and a near infrared. The collected images, 103 in total, from the three technologies have been analyzed using a wide range of image processing techniques and compared with identification templates to evaluate the performance of each technology. The results show that the near infrared technology supported by suitable LED illumination is the most effective for the visualization of veins. However, infrared thermography is found to be successful when followed by a cold stimulation

Assessment of Trees Outside Forest (TOF) in Selected Makiling Subwatersheds

Trees outside Forest (TOF) are trees, shrubs, bushes including palms that are found in the Food and Agriculture Organization (FAO) other land classification that can be agricultural, urban, or non-agricultural/urban. TOF provide various services and functions that are neither well documented nor given enough attention, hence the need to identify and assess them in agriculture and urban areas outside Mt. Makiling. A SPOT satellite image (2010) covering the Cambantoc, Molawin-Dampalit, and Tigbi subwatersheds of Mt. Makiling was used in the supervised classification of forests, lakes, agriculture, and urban areas. Areas that qualify as other lands were extracted using the classified land types as guides in GIS vector format. Using Google Earth imagery, other lands were digitized and assessed following the FAO decision tree algorithm for TOF and field checking was conducted to validate the tree height in the TOF criteria. Based on the GIS and field assessment, Tigbi and Molawin-Dampalit were found to have TOF on urban land that are mostly fruit trees cultivated for food, landscaping while Cambantoc has TOF on agricultural land and TOF on non-agricultural/urban that are used as farm windbreaks. Findings suggested that TOF contributed to the tree canopy cover in Makiling subwatersheds. Assessment of TOF can be used to account for the ecosystem services it provides which complement those that come from forests and other wooded lands. FAO also recognizes the importance of TOF for local and national food security. TOF, especially fruit trees, are important source of food products for the people

Deep learning based workflow for accelerated industrial X-ray Computed Tomography

X-ray computed tomography (XCT) is an important tool for high-resolution non-destructive characterization of additively-manufactured metal components. XCT reconstructions of metal components may have beam hardening artifacts such as cupping and streaking which makes reliable detection of flaws and defects challenging. Furthermore, traditional workflows based on using analytic reconstruction algorithms require a large number of projections for accurate characterization - leading to longer measurement times and hindering the adoption of XCT for in-line inspections. In this paper, we introduce a new workflow based on the use of two neural networks to obtain high-quality accelerated reconstructions from sparse-view XCT scans of single material metal parts. The first network, implemented using fully-connected layers, helps reduce the impact of BH in the projection data without the need of any calibration or knowledge of the component material. The second network, a convolutional neural network, maps a low-quality analytic 3D reconstruction to a high-quality reconstruction. Using experimental data, we demonstrate that our method robustly generalizes across several alloys, and for a range of sparsity levels without any need for retraining the networks thereby enabling accurate and fast industrial XCT inspections

Multidimensional imaging for skin tissue surface characterization

Human skin, the outer and largest organ covering our body, can be described in terms of both its 3D spatial topography and its 2D spectral reflectance. Such a characterization normally requires the application of separate procedures using different kinds of equipment, where spectral reflectance can only be obtained from a small patch of the skin surface. This paper investigates the integration of multiple imaging modalities to simultaneously capture both spectral and spatial information from the skin surface over a wide area. By extending the imaging spectrum from the visible to the near-infrared (NIR), we improve general recovery, obtain a more detailed skin profile, and are able to identify the distribution of various principal chromophores within the deeper dermal layers. Experiments show that new dimensions of skin characterization can be generated through the recovered geometrical and spectral information, so that an enhanced visibility of important skin physiological phenomena can be achieved. © 2013 Elsevier B.V. All rights reserved

New methodologies for the oxidative clivage of fatty acid's double bonds

Au niveau industriel, l'accès aux acides azélaïque et pélargonique, composés à forte valeur ajoutée, est possible grâce à une réaction d'ozonolyse de l'acide oléïque. Cependant, cette méthode présente certains désavantages sur le plan écologique. Le but de cette étude a donc été de développer une méthode alternative à ce procédé industriel, visant à limiter autant que possible les impacts écologiques, directs ou indirects, lors de la synthèse des acides azélaïque et pélargonique. Nous avons ainsi montré qu'un clivage en deux étapes peut être préférable à un clivage oxydant en une étape. Notre procédé propose ainsi, dans un premier temps, une dihydroxylation de la double liaison d'acides gras par une méthode connue, laquelle est suivie par un clivage oxydant en présence d'hypochlorite de sodium. Ce nouveau procédé mis au point au sein du laboratoire présente l'avantage de ne nécessiter l'emploi ni de métaux de transition, ni de solvant organique. Nous avons par la suite étudié l'hypochlorite de sodium afin de déterminer son rôle et son mode d'action dans la réaction de clivage de diols vicinauxIndustrial production of two high added value compounds called pelargonic acid and azelaic acid is made possible by the ozonolysis reaction of oleic acid. However, this method has numerous disadvantages in term of ecological impact. In this dissertation, we present an alternative to the current industrial process in order to lower direct or indirect negative environmental impacts when synthetizing azelaic and pelargonic acids. At first we demonstrate that a two-step oxidative cleavage may be preferable to a one-step cleavage. Then we present in details a novel synthesis method which starts with the dihydroxylation of the fatty acids double bond using a well known method, followed by the oxidative cleavage in presence of sodium hypochlorite. One notes that this original fabrication process developed in our laboratory does not require to use transition metals nor organic solvents. As a complement to this work, we have subsequently studied the sodium hypochlorite to determine its role and operating mode in the vicinal diols cleavage reactio

Study for power durability improvements of surface acoustic wave filters at radio frequency

Les travaux proposés dans ce manuscrit font l'objet d'une première thèse CIFRE sur ce sujet entre l'Institut FEMTO-ST de Besançon et la société AR Electronique. L’objectif est de faciliter les travaux futurs d’amélioration des filtres à ondes élastiques de surface soumis à des signaux typiquement supérieurs à 10 dBm.Une étude bibliographique est réalisée afin d'identifier les origines et les mécanismes des défaillances de ce type de dispositif, tels que l'acoustomigration et l'autoéchauffement.Pour la réalisation de l’ensemble des expérimentations de la thèse, nous mettons en œuvre des configurations d’électrodes sur un filtre utilisé comme véhicule de test. La conception, l'assemblage et la calibration d'un banc de mesure et de caractérisation en puissance radiofréquence est réalisé. Des protocoles de tests sont proposés afin d'évaluer la tenue en puissance des prototypes mis en œuvre.Nous étudions des pistes d’améliorations portant sur l’arrangement cristallographique des électrodes, en nous basant sur les protocoles de tests développés, et l'évaluation de la tenue à la puissance de quatre configurations d’électrodes réalisées. Une orientation pour de futurs travaux est proposée pour accélérer les développements technologiques.La tenue à la puissance des filtres est également influencée par l’architecture de ces derniers. Une analyse portant sur l'autoéchauffement des filtres sous test est proposée et la caractérisation en puissance d’une seconde structure de filtre, fabriqué sur un substrat piézoélectrique composite, est réalisée. Nous proposons des axes de travail pour l’étude de nouvelles architectures de filtres.À partir des résultats obtenus de la thèse, nous proposons des améliorations sur les dispositifs à ondes élastiques de surface pour leur tenue à la puissance.The development proposed in this manuscript are subject of a CIFRE thesis between the FEMTO-ST Institute of Besançon and the AR Electronique company. In this context, a bibliographic review is done in order to identify the failure mechanisms stake when a surface acoustic wave device is submitted to a signal typically higher than 10 dBm. The acoustomigration, self-heating and device’s destruction are covered.We study sources of improvement based on the electrodes cristallographic orientations and the filter structure. With this aim, we fabricate several electrodes configurations, on a filter used as a testing vehicle.The designing, assembling and calibration of aninstrument for measuring the radio-frequency power durability is achieved. Several testing protocols are proposed for evaluating the power durability of the developed prototypes.An analysis of the self-heating of the tested filters is proposed.Using such developed protocols, an evaluation of the power durability of four different electrodes configuration is achieved. The caracterisation of the power durability of another structure of filter, based on a composite piezoelectric substrate, is achieved.Based on those results, propositions are given for improving the power durability of surface acoustic wave devices