La Separazione mediante HPLC dei due fenoli isomeri Timolo (p-isopropil-m-cresolo) e Carvacrolo (p-isopropil-o-cresolo)

A method is described for the separation by HPLC of two isomer phenols thymol and carvacrol. Satisfactory resu1ts have been obtained by using a chromatographic column μ Bondapak ,C18 and a solvent system constitued by acetonitrile (40%) and water (60%). The flow rate was 1,5 ml/min. The use of this technique permits determination and dosage of these two phenols in essential oils

A deep learning-based pipeline for whitefly pest abundance estimation on chromotropic sticky traps

Integrated Pest Management (IPM) is an essential approach used in smart agriculture to manage pest populations and sustainably optimize crop production. One of the cornerstones underlying IPM solutions is pest monitoring, a practice often performed by farm owners by using chromotropic sticky traps placed on insect hot spots to gauge pest population densities. In this paper, we propose a modular model-agnostic deep learning-based counting pipeline for estimating the number of insects present in pictures of chromotropic sticky traps, thus reducing the need for manual trap inspections and minimizing human effort. Additionally, our solution generates a set of raw positions of the counted insects and confidence scores expressing their reliability, allowing practitioners to filter out unreliable predictions. We train and assess our technique by exploiting PST - Pest Sticky Traps, a new collection of dot-annotated images we created on purpose and we publicly release, suitable for counting whiteflies. Experimental evaluation shows that our proposed counting strategy can be a valuable Artificial Intelligence-based tool to help farm owners to control pest outbreaks and prevent crop damages effectively. Specifically, our solution achieves an average counting error of approximately compared to human capabilities requiring a matter of seconds, a large improvement respecting the time-intensive process of manual human inspections, which often take hours or even days

Avaliação da homogeneidade da mistura de dietas de bovinos confinados com diferentes ingredientes.

Objetivou-se avaliar a qualidade da mistura de duas dietas, homogeneizadas em vagão misturador (Tratomix 600, IPACOL), por meio da análise de MS

From the historical sugar refinery of Chichaoua (Morocco) to the lab: A reverse engineering experimentation on the hydration of earthen materials stabilized with lime

In order to explain the good state of conservation and good mechanical characteristics of the lime-stabilized earth of the sugar refinery near Chichaoua (Morocco, XVIth A.C.) XRD, SEM-EDX, TG-DSC, FT-IR analyses were performed on collected samples. Moreover laboratory earth samples were prepared with selected clay minerals (presence of attapulgite) and lime, involving a reverse engineering process in order to investigate the reaction products during curing . The same analyses performed on the historical samples were carried out on lab samples. Moreover, compressive strength was assessed. The results were compared to the ones obtained on the historical samples. The maturation of lime-stabilized rammed earth was due to lime carbonation and to earth drying and consolidation. Furthermore, the formation of mixed CSH phases was evidenced, possibly because of a slow pozzolanic reaction between lime and clays, that took place in long times both in lab and in historical samples.In order to explain the good state of conservation and good mechanical characteristics of the lime-stabilized earth of the sugar refinery near Chichaoua (Morocco, XVIth A.C.) XRD, SEM-EDX, TG-DSC, FT-IR analyses were performed on collected samples. Moreover laboratory earth samples were prepared with selected clay minerals (presence of attapulgite) and lime, involving a reverse engineering process in order to investigate the reaction products during curing . The same analyses performed on the historical samples were carried out on lab samples. Moreover, compressive strength was assessed. The results were compared to the ones obtained on the historical samples. The maturation of lime-stabilized rammed earth was due to lime carbonation and to earth drying and consolidation. Furthermore, the formation of mixed CSH phases was evidenced, possibly because of a slow pozzolanic reaction between lime and clays, that took place in long times both in lab and in historical samples

Efeito de diferentes instalações no desempenho de novilhos Nelore confinados.

O objetivo deste trabalho é verificar se as diferentes instalações podem interferir no desempenho de novilhos Nelore confinados

Existe preferência dos bovinos confinados por determinados cochos em sistema de alimentação coletivo?

Objetivou-se com este trabalho avaliar a posição dos animais dentro das baias coletivas para determinar a taxa de fidelidade a um cocho por determinado animal. Havendo preferência, seria possível atribuir o colar mais adequado para cada animal e, com isso, reduzir o tempo de aprendizado

Eficiência alimentar entre novilhos Nelore confinados em diferentes instalações.

O objetivo do trabalho é avaliar o efeito de diferentes instalações na eficiência alimentar de bovinos de corte confinados