cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.6273257.v1
title: Effect of Alkaline and Hot Water Treatments on the Structure and Morphology of Piassava Fibers

description: The effect of alcaline and hot water surface treatments of piassava Attalea funifera fibers was investigated. The efficiency of each treatment was evaluated by Fourier transform infrared spectroscopy, X-ray diffractometry, optical microscopy, scanning electron microscopy and atomic force microscopy. The alkaline treatments were effective in removing the superficial lignin layer from the fiber, while the hot water treatment was not. Treatment with hot water and NaOH caused fiber defibrillation. NaOH was most effective in promoting both, a decrease in fiber diameter and an increase in fiber surface area. Treatment with Ca(OH)2 led to the formation of a CaCO3 layer deposited on the fiber, preventing defibrillation. The crystalline structure of the fiber was not altered by any of the treatments, maintaining type I cellulose.
DOI: 10.6084/m9.figshare.6273254
title: Bovine Vaccinia in dairy cattle and suspicion of vesicular disease on milkers in Brazil

description: ABSTRACT: Bovine vaccinia (BV) is a vesicular disease induced by the Vaccinia virus (VACV) that affects milk production and is an occupational zoonosis. This research had the following objectives: (i) detection of VACV by qPCR in cattle with clinical suspicion of vesicular disease; (ii) symptoms characterization in animals and milkers with clinical suspicion of the disease and virus detection in humans; and (iii) identification of risk factors for infections of VACV in herds from several Brazilian states. A total of 471 bovine epithelial samples from dairy farms, in 15 Brazilian states, were evaluated between 2007 and 2012. The samples were tested by quantitative PCR (qPCR) using SYBR Green® reagents, validated with a lower limit of detection of 100 TCID50/50µL (1.7x100 viral particles), and 45.1% of VACV positive samples were detected. Using official forms for epidemiological investigation (FORM-IN), the risk factors for VACV infections in cattle were determined to be farms with a lack of technological facilities (P=0.029) and the presence of rodents (P=0.001). There was an effect of seasonality in cattle with a higher occurrence of BV during the dry season. A total of 420 epidemiological questionnaires were applied at public health care centers, where 100% of the milkers had vesicular lesions on their hands (98.1%) and on their arms (6.9%). The most frequent clinical symptoms in humans were: local swelling (74.2%), headache (20.7%), fever (10.4%) and inguinal lymphadenopathy (74.2%). Only 19.98% of milkers aged between 39 and 58 years were seroreactive to VACV and were immunized with the human anti-smallpox vaccine. There was an increase in the frequency of BV in older individuals due to their natural decrease in specific immunity. It has been shown that the implementation of zootechnical management techniques and health planning are important for the prevention of BV in animals and humans.
DOI: 10.6084/m9.figshare.6273254.v1
title: Bovine Vaccinia in dairy cattle and suspicion of vesicular disease on milkers in Brazil

description: ABSTRACT: Bovine vaccinia (BV) is a vesicular disease induced by the Vaccinia virus (VACV) that affects milk production and is an occupational zoonosis. This research had the following objectives: (i) detection of VACV by qPCR in cattle with clinical suspicion of vesicular disease; (ii) symptoms characterization in animals and milkers with clinical suspicion of the disease and virus detection in humans; and (iii) identification of risk factors for infections of VACV in herds from several Brazilian states. A total of 471 bovine epithelial samples from dairy farms, in 15 Brazilian states, were evaluated between 2007 and 2012. The samples were tested by quantitative PCR (qPCR) using SYBR Green® reagents, validated with a lower limit of detection of 100 TCID50/50µL (1.7x100 viral particles), and 45.1% of VACV positive samples were detected. Using official forms for epidemiological investigation (FORM-IN), the risk factors for VACV infections in cattle were determined to be farms with a lack of technological facilities (P=0.029) and the presence of rodents (P=0.001). There was an effect of seasonality in cattle with a higher occurrence of BV during the dry season. A total of 420 epidemiological questionnaires were applied at public health care centers, where 100% of the milkers had vesicular lesions on their hands (98.1%) and on their arms (6.9%). The most frequent clinical symptoms in humans were: local swelling (74.2%), headache (20.7%), fever (10.4%) and inguinal lymphadenopathy (74.2%). Only 19.98% of milkers aged between 39 and 58 years were seroreactive to VACV and were immunized with the human anti-smallpox vaccine. There was an increase in the frequency of BV in older individuals due to their natural decrease in specific immunity. It has been shown that the implementation of zootechnical management techniques and health planning are important for the prevention of BV in animals and humans.
DOI: 10.6084/m9.figshare.6273251
title: Agroclimatic zoning for coffee crop in Angola

description: ABSTRACT The Angolan Government intends to recover its 1970s expressive production of coffee by means of agricultural financing programs, mainly directed to family farmers. This study aimed to perform the agroclimatic zoning for the coffee crop in the Angolan territory. Data or estimates of annual temperature, effective and total rainfall rates, climatic water balance and annual water deficit were evaluated for all the 163 Angolan municipalities. The effective and total precipitation data were used for the agroclimatic zoning of the coffee crop in the country. Based on the effective precipitation data, 1 %, 20 % and 79 % of the Angolan territory were respectively considered suitable, marginal and unsuitable for the Arabica coffee, while, for the Robusta coffee, the same rates were, respectively, 1 %, 8 % and 91 %. Based on the total precipitation data, these rates were 2 %, 27.5 % and 70.5 % for the Arabica coffee and 1 %, 11.8 % and 87.2 % for the Robusta coffee. The areas considered marginal and unsuitable for the coffee crop in Angola are related to water deficit conditions, mainly in the southwestern region and along the coastal strip. The results obtained from the climatic water balance show that most part of the Angolan territory is marginal or unsuitable for the coffee crop.
DOI: 10.6084/m9.figshare.6273251.v1
title: Agroclimatic zoning for coffee crop in Angola

description: ABSTRACT The Angolan Government intends to recover its 1970s expressive production of coffee by means of agricultural financing programs, mainly directed to family farmers. This study aimed to perform the agroclimatic zoning for the coffee crop in the Angolan territory. Data or estimates of annual temperature, effective and total rainfall rates, climatic water balance and annual water deficit were evaluated for all the 163 Angolan municipalities. The effective and total precipitation data were used for the agroclimatic zoning of the coffee crop in the country. Based on the effective precipitation data, 1 %, 20 % and 79 % of the Angolan territory were respectively considered suitable, marginal and unsuitable for the Arabica coffee, while, for the Robusta coffee, the same rates were, respectively, 1 %, 8 % and 91 %. Based on the total precipitation data, these rates were 2 %, 27.5 % and 70.5 % for the Arabica coffee and 1 %, 11.8 % and 87.2 % for the Robusta coffee. The areas considered marginal and unsuitable for the coffee crop in Angola are related to water deficit conditions, mainly in the southwestern region and along the coastal strip. The results obtained from the climatic water balance show that most part of the Angolan territory is marginal or unsuitable for the coffee crop.
DOI: 10.6084/m9.figshare.6273239
title: Mechanical, Magnetic, and Microstructural Characterization of Ni0.9Co0.1Fe2O4 Produced by the Ceramic Method

description: Ni-Co ferrites, especially the ones with lower cobalt fractions, are candidate materials for applications in magnetomechanical sensors and electromagnetic wave absorbers. This work studied the microstructure, magnetostriction, flexural strength, and complex magnetic permeability of Ni0.9Co0.1Fe2O4, presenting data that weren't covered by previous literature on this composition. It was found that sieving the calcined powder before the forming operation increased the flexural strength of the ceramic. The Ni-Co ferrite had a saturation magnetostriction of 36ppm. The real part of the complex magnetic permeability varied between 2.2-2.3 in frequencies from 100MHz to 1GHz. In frequencies higher than 1GHz, µ' decreased sharply and reached 1 at 3.9GHz. It was found that the grinding media provided a small fraction of Al to the ferrite composition, which apparently affected the complex magnetic permeability of the material but the magnetostriction results were very close to Al-free Ni-Co ferrites with similar composition.
DOI: 10.6084/m9.figshare.6273239.v1
title: Mechanical, Magnetic, and Microstructural Characterization of Ni0.9Co0.1Fe2O4 Produced by the Ceramic Method

description: Ni-Co ferrites, especially the ones with lower cobalt fractions, are candidate materials for applications in magnetomechanical sensors and electromagnetic wave absorbers. This work studied the microstructure, magnetostriction, flexural strength, and complex magnetic permeability of Ni0.9Co0.1Fe2O4, presenting data that weren't covered by previous literature on this composition. It was found that sieving the calcined powder before the forming operation increased the flexural strength of the ceramic. The Ni-Co ferrite had a saturation magnetostriction of 36ppm. The real part of the complex magnetic permeability varied between 2.2-2.3 in frequencies from 100MHz to 1GHz. In frequencies higher than 1GHz, µ' decreased sharply and reached 1 at 3.9GHz. It was found that the grinding media provided a small fraction of Al to the ferrite composition, which apparently affected the complex magnetic permeability of the material but the magnetostriction results were very close to Al-free Ni-Co ferrites with similar composition.
DOI: 10.6084/m9.figshare.6273233
title: Good Manufacturing Practices, Hazard Analysis and Critical Control Point plan proposal for distilleries of cachaça

description: ABSTRACT: Cachaça poses many quality (appearance, taste, consumer acceptability) and safety hazards (chemical, metal, and microbiological contaminations during the process). In this work, an effort is made for the quality and safety analysis of cachaça, by describing and outlining the potential hazards in every step of the process. This study revealed that the critical control points (CCPs) involved in Good Manufacturing Practices (GMP) to prevent cachaça safety hazards are the stages of sugarcane growing, sugarcane harvesting, fermentation, distillation, and aging process. The most significant factors for both CCPs and critical points (CPs) that should be controlled are determined. The implementation of the Hazard Analysis and Critical Control Point (HACCP) system in small distilleries of cachaça has been very helpful to provide the required safety for domestic consumers and boost cachaça exportations. Therefore, the main objective of the cachaça industry is to achieve production consistency.
DOI: 10.6084/m9.figshare.6273233.v1
title: Good Manufacturing Practices, Hazard Analysis and Critical Control Point plan proposal for distilleries of cachaça

description: ABSTRACT: Cachaça poses many quality (appearance, taste, consumer acceptability) and safety hazards (chemical, metal, and microbiological contaminations during the process). In this work, an effort is made for the quality and safety analysis of cachaça, by describing and outlining the potential hazards in every step of the process. This study revealed that the critical control points (CCPs) involved in Good Manufacturing Practices (GMP) to prevent cachaça safety hazards are the stages of sugarcane growing, sugarcane harvesting, fermentation, distillation, and aging process. The most significant factors for both CCPs and critical points (CPs) that should be controlled are determined. The implementation of the Hazard Analysis and Critical Control Point (HACCP) system in small distilleries of cachaça has been very helpful to provide the required safety for domestic consumers and boost cachaça exportations. Therefore, the main objective of the cachaça industry is to achieve production consistency.
DOI: 10.6084/m9.figshare.6273230
title: Fibrinous pleuropneumonia caused by Pasteurella multocida associated with bovine lymphoma

description: ABSTRACT: In this work, we describe an unusual case of fibrinous pleuropneumonia caused by Pasteurella multocida associated with generalized lymphadenomegaly in a bovine. The animal had a one-month history of generalized superficial lymphadenomegaly that progressed to anorexia and submandibular oedema, resulting in spontaneous death. At necropsy, the parenchyma of the lymph nodes and multiple organs was obliterated by a dense proliferation of round neoplastic cells (lymphoma). Additionally, the neoplasm presented multifocal areas of haemorrhage and necrosis, characteristic of lymphoma. The parietal and visceral pleura and parietal pericardium were enlarged and covered diffusely with large amounts of a yellowish fibrillary material. The lungs were mildly enlarged, non-collapsed, and firm and exhibited interlobular septae that were thickened with a gelatinous material. Histopathological examination showed that the parietal and visceral pleura were enlarged due to a diffuse and severe inflammatory infiltrate composed of degenerate neutrophils associated with severe fibrin deposition, characteristic of fibrinous pleuropneumonia. Pleura and parietal pericardium fragments were cultivated in aerobic and microaerobic microbiological conditions. Round greyish colonies of gram-negative coccobacilli that were shiny and non-haemolytic were observed in sheep blood agar. The biochemical profile was indicative of Pasteurella spp. Molecular identification was performed by partial 16S rRNA amplification following sequencing. Pasteurella multocida was confirmed as the primary bacterium associated with the bovine fibrinous pleuropneumonia. We are able to infer that the lymphoma caused immunodepression, which increased the animal’s susceptibility to atypical infectious microorganisms such as pathogenic P. multocida.
DOI: 10.6084/m9.figshare.6273230.v1
title: Fibrinous pleuropneumonia caused by Pasteurella multocida associated with bovine lymphoma

description: ABSTRACT: In this work, we describe an unusual case of fibrinous pleuropneumonia caused by Pasteurella multocida associated with generalized lymphadenomegaly in a bovine. The animal had a one-month history of generalized superficial lymphadenomegaly that progressed to anorexia and submandibular oedema, resulting in spontaneous death. At necropsy, the parenchyma of the lymph nodes and multiple organs was obliterated by a dense proliferation of round neoplastic cells (lymphoma). Additionally, the neoplasm presented multifocal areas of haemorrhage and necrosis, characteristic of lymphoma. The parietal and visceral pleura and parietal pericardium were enlarged and covered diffusely with large amounts of a yellowish fibrillary material. The lungs were mildly enlarged, non-collapsed, and firm and exhibited interlobular septae that were thickened with a gelatinous material. Histopathological examination showed that the parietal and visceral pleura were enlarged due to a diffuse and severe inflammatory infiltrate composed of degenerate neutrophils associated with severe fibrin deposition, characteristic of fibrinous pleuropneumonia. Pleura and parietal pericardium fragments were cultivated in aerobic and microaerobic microbiological conditions. Round greyish colonies of gram-negative coccobacilli that were shiny and non-haemolytic were observed in sheep blood agar. The biochemical profile was indicative of Pasteurella spp. Molecular identification was performed by partial 16S rRNA amplification following sequencing. Pasteurella multocida was confirmed as the primary bacterium associated with the bovine fibrinous pleuropneumonia. We are able to infer that the lymphoma caused immunodepression, which increased the animal’s susceptibility to atypical infectious microorganisms such as pathogenic P. multocida.
DOI: 10.6084/m9.figshare.6273224
title: Microbiological and physical-chemical characteristics of honeys from the bee Melipona fasciculata produced in two regions of Brazil

description: ABSTRACT: The honey from Tiúba bees (Melipona fasciculata) is commercially important in the Brazilian state of Maranhão. However, the absence of any specific legislation for this kind of honey is an obstacle to its increased production and commercialization. Determining the microbiological and physical-chemical characteristics of different Tiúba honey can inform the elaboration of specific legislation. Thus, honey samples from two Water Catchment Areas in Maranhão (Munim and Pericumã, sample size 20 for each) were collected and submitted for microbiological analysis (total coliforms, thermotolerant coliforms, molds and yeasts, Clostridium sulfite reducers and Salmonella sp.) and physical-chemical analysis (moisture content, reducing and non-reducing sugars, insoluble and soluble solids, ash content, acidity and pH). Most of honeys sampled were suitable for human consumption, except for one sample from Pericumã. Honeys from the two water catchment areas presented differences in some physicochemical characteristics, which can be attributed to the botanic, soil and climatic diversity of the two areas. Still, these Tiúba honey samples did not fall within the Brazilian legislation for Apis mellifera honey for some of the physical-chemical characteristics, and so is not properly regulated, thus reinforcing the need for specific legislation for this type of honey.
DOI: 10.6084/m9.figshare.6273224.v1
title: Microbiological and physical-chemical characteristics of honeys from the bee Melipona fasciculata produced in two regions of Brazil

description: ABSTRACT: The honey from Tiúba bees (Melipona fasciculata) is commercially important in the Brazilian state of Maranhão. However, the absence of any specific legislation for this kind of honey is an obstacle to its increased production and commercialization. Determining the microbiological and physical-chemical characteristics of different Tiúba honey can inform the elaboration of specific legislation. Thus, honey samples from two Water Catchment Areas in Maranhão (Munim and Pericumã, sample size 20 for each) were collected and submitted for microbiological analysis (total coliforms, thermotolerant coliforms, molds and yeasts, Clostridium sulfite reducers and Salmonella sp.) and physical-chemical analysis (moisture content, reducing and non-reducing sugars, insoluble and soluble solids, ash content, acidity and pH). Most of honeys sampled were suitable for human consumption, except for one sample from Pericumã. Honeys from the two water catchment areas presented differences in some physicochemical characteristics, which can be attributed to the botanic, soil and climatic diversity of the two areas. Still, these Tiúba honey samples did not fall within the Brazilian legislation for Apis mellifera honey for some of the physical-chemical characteristics, and so is not properly regulated, thus reinforcing the need for specific legislation for this type of honey.
DOI: 10.6084/m9.figshare.6273218
title: Evaluation of prophylactic and therapeutic effects of sildenafil on acute radiation proctitis in rats

description: Abstract Purpose: To investigate the prophylactic and therapeutical effects of sildenafil in a model of acute radiation proctitis (ARP). Methods: All experimental procedures of this study was examined by histopathological, immunohistochemical and transmission electron microscopic analysis. Results: Our histopathological evaluations indicated significant increases in lesion severity, cryptic apsis, cryptitis, cryptic distortion, reactive atypia and infiltration depth of the control (proctitis) group. While the prophylaxis group and the treatment group had significantly lower scores. High-dose group showed similar results as prophylaxis group. Histopathological findings of the prophylaxis group was more significant than the treatment group. Immunoreactivities of IL-1β, FGF-2, TNF- α and HIF-1α increased in the control group especially in the epithelial and cryptic regions. On the contrary, sildenafil application caused significant decreases of inflammatory markers in all treatment groups, specifically better results in the prophylaxis group. Conclusion: The sildenafil has anti-inflammatory effects on ARP, as well as protective effects against ARP and the protective effect of sildenafil surpasses its therapeutic effect histopathologically.
DOI: 10.6084/m9.figshare.6273218.v1
title: Evaluation of prophylactic and therapeutic effects of sildenafil on acute radiation proctitis in rats

description: Abstract Purpose: To investigate the prophylactic and therapeutical effects of sildenafil in a model of acute radiation proctitis (ARP). Methods: All experimental procedures of this study was examined by histopathological, immunohistochemical and transmission electron microscopic analysis. Results: Our histopathological evaluations indicated significant increases in lesion severity, cryptic apsis, cryptitis, cryptic distortion, reactive atypia and infiltration depth of the control (proctitis) group. While the prophylaxis group and the treatment group had significantly lower scores. High-dose group showed similar results as prophylaxis group. Histopathological findings of the prophylaxis group was more significant than the treatment group. Immunoreactivities of IL-1β, FGF-2, TNF- α and HIF-1α increased in the control group especially in the epithelial and cryptic regions. On the contrary, sildenafil application caused significant decreases of inflammatory markers in all treatment groups, specifically better results in the prophylaxis group. Conclusion: The sildenafil has anti-inflammatory effects on ARP, as well as protective effects against ARP and the protective effect of sildenafil surpasses its therapeutic effect histopathologically.
DOI: 10.6084/m9.figshare.6273215
title: Evaluation of the hydraulic performance of an urban stormwater drainage system

description: ABSTRACT The lack of effective planning and integration between the urban infrastructure administrations associated with the widespread soil development provokes surcharge over the storm sewer pipe network. This work aimed to assess the hydraulic performance of an urban stormwater sewer pipe network located at the main campus of the State University of Campinas, São Paulo, Brazil, in such a manner that it is possible to identify those surcharged reaches and eventually local floods. Since flow rates are not available in urban watersheds, the overland flow was estimated by rainfall-runoff transformation methods. Next, the steady state hydraulic analysis was used to estimate the hydraulic heads in the pipe network. Hydraulic performance index, the ratio of overcharge in each pipe network segment and the hydraulic contribution matrix showed what segments cause each manhole surge. The results for the five-years return period rainfall show that there are at least 12 manhole surge locations in the area, which are vulnerable to local floods. In this sense, the hydraulic performance index and the contribution matrix may be important instruments also for an eventual rehabilitation work to the stormwater sewer pipe network in this area.