cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.11272598.v1
title: ND-NU Analysis.xlsx

description: These data show the firing rate of RVLM neurons in animals positioned 20 deg nose-down vs. 20 deg. nose-up. Each tab shows data for a variety of trials in different cells. This dataset is linked to Fig. 9 in https://doi.org/10.1101/693408, "Responses of Neurons in the Rostral Ventrolateral Medulla (RVLM) of Conscious Felines to Anticipated and Passive Movements."<br>
DOI: 10.6084/m9.figshare.11267891.v1
title: Fetal posterior fossa malformations: review of the current knowledge

description: Abstract Ultrasound diagnosis of posterior fossa malformations in the prenatal period is a challenge, having major implications for the counseling and follow-up of pregnant women. The purpose of this study was to review aspects of the ultrasound evaluation of the fetal posterior fossa, as well as to describe the most relevant ultrasound findings of the main posterior fossa malformations that can affect the fetus in the prenatal period.
DOI: 10.6084/m9.figshare.11267819
title: Prevalence of Metabolic Syndrome and associations with nutritional status in adolescents

description: Abstract Background Metabolic syndrome is a multifactorial disorder mainly related to abdominal fat deposition and changes in glucose homeostasis and / or insulin resistance. Studies show associations between childhood overweight and high morbidity and mortality rates in adulthood, so the presence of metabolic changes in childhood and / or adolescence may contribute to an unfavorable health profile to the future health of individuals. Objective To determine the prevalence of metabolic syndrome and to check its association with nutritional status in adolescents. Method Cross-sectional study with adolescents from public and private schools with ages ranging from 14 to 19 years was carried out. It was performed an anthropometric assessment, including the determination of Body Mass Index and Waist Circumference, besides that the determination of biochemical parameters and blood pressure was also collected. In order to diagnose Metabolic Syndrome, it was used the National Cholesterol Education Program’s Adult Treatment Panel III (NCEP/ATP III) criteria. The anthropometric and biochemical characteristics were expressed as average and standard deviations, and compared between the genders by the Student’s t-test, while for the analysis of risk was used binary logistic regression. Results Of total 327 interviewed adolescents, 59.9% of them were female, 65.7% were studying in public schools. The prevalence of metabolic syndrome was 7%, while the presence of at least one diagnostic criterion of this syndrome was present in 90.8% of the sample. Moreover, obesity was significantly associated with metabolic syndrome, indicating a greater risk. Conclusion Adolescents have a high prevalence of metabolic syndrome, showing early components of this pathology, which is still associated with obesity, highlighting a greater risk for those who present this condition. Therefore, nutritional interventions directed at the young population should be promoted, with the purpose of improving eating habits and lifestyle.
DOI: 10.6084/m9.figshare.11267810
title: In vitro Evaluation of PHBV/PCL Blends for Bone Tissue Engineering

description: The objective of this study was to evaluate Vero cells in in vitro biocompatibility tests with pure PHBV and PCL and 75/25 and 50/50 blends developed for bone tissue bioengineering in dense or porous forms. The biomaterials were characterized morphologically by scanning electron microscopy, (SEM) stereoscopic imaging (SI), and micrometer measurement. Cellular assay was made by MTT, morphological and cytochemistry analysis. The dense and porous scaffolds presented irregular surfaces. SEM allowed to observe details of the irregular surface throughout the dense samples and confirmed the absence of pores. It was found interconnected pores on porous samples. The porous samples were thicker than the dense samples. None of the polymers was considered toxic. Lower activity measured by MTT was observed for the 50/50 blends, suggesting a slower cell adhesion pattern. The cells were able to spread almost throughout the surface of the polymers, even into the pores. The dense and porous 50/50 samples were so brittle and difficult handling. Except for the 50/50 blends, the polymers were generally good substrates for the cells, were non-toxic, and exhibited the recommended morphological features. In addition, these biomaterials did not inhibit specific biological responses identified at the cytochemical level.
DOI: 10.6084/m9.figshare.11267819.v1
title: Prevalence of Metabolic Syndrome and associations with nutritional status in adolescents

description: Abstract Background Metabolic syndrome is a multifactorial disorder mainly related to abdominal fat deposition and changes in glucose homeostasis and / or insulin resistance. Studies show associations between childhood overweight and high morbidity and mortality rates in adulthood, so the presence of metabolic changes in childhood and / or adolescence may contribute to an unfavorable health profile to the future health of individuals. Objective To determine the prevalence of metabolic syndrome and to check its association with nutritional status in adolescents. Method Cross-sectional study with adolescents from public and private schools with ages ranging from 14 to 19 years was carried out. It was performed an anthropometric assessment, including the determination of Body Mass Index and Waist Circumference, besides that the determination of biochemical parameters and blood pressure was also collected. In order to diagnose Metabolic Syndrome, it was used the National Cholesterol Education Program’s Adult Treatment Panel III (NCEP/ATP III) criteria. The anthropometric and biochemical characteristics were expressed as average and standard deviations, and compared between the genders by the Student’s t-test, while for the analysis of risk was used binary logistic regression. Results Of total 327 interviewed adolescents, 59.9% of them were female, 65.7% were studying in public schools. The prevalence of metabolic syndrome was 7%, while the presence of at least one diagnostic criterion of this syndrome was present in 90.8% of the sample. Moreover, obesity was significantly associated with metabolic syndrome, indicating a greater risk. Conclusion Adolescents have a high prevalence of metabolic syndrome, showing early components of this pathology, which is still associated with obesity, highlighting a greater risk for those who present this condition. Therefore, nutritional interventions directed at the young population should be promoted, with the purpose of improving eating habits and lifestyle.
DOI: 10.6084/m9.figshare.11267795
title: Development of Geopolymers for Catalyst Support Applications

description: A geopolymer with high specific surface area was synthesized from metakaolin, amorphous silica and KOH, in the absence of foaming or saponification agents. The mixture modelling technique was selected for this study among the Design of Experiments tools, using surface area and total pores volume as response variables. The Si/K = 2.46 and Si/Al = 1.37 ratios lead to the optimal experimental conditions, allowing the formation of a geopolymer having a specific surface area of 75 m2/g and total pores volume of 0.28 cm3/g. The pores had a bimodal pore size distribution (7 and 20 nm). In spite of its amorphous nature, this structure is similar to zeolites in terms of ion exchange and metal ions accommodation. Therefore, this study envisages its application as a catalyst support.
DOI: 10.6084/m9.figshare.11267804
title: Gonadal development and reproductive period of the characin Astyanax aff. bimaculatus (Characiformes: Characidae) in a tropical reservoir in southeastern Brazil

description: ABSTRACT The gonadal development of the characin Astyanax aff. bimaculatus from Funil Reservoir, an impoundment in the middle reaches of the Paraiba do Sul River in southeastern Brazil was analysed through histological, histochemical and histometric techniques, and the spawning season was determined. Unbalanced sex ratio was found, with females outnumbering and reaching larger sizes than males. The following stages of oogenic cell development were identified for females: primary growth, pre-vitellogenic (cortical alveolar) and vitellogenic. In males, the following stages were determined: spermatogonia primary and secondary, spermatocyte primary and secondary, spermatid and spermatozoa. The spawning occurs most of the year, peaking in January-February, as indicated by the gonadosomatic index. In the peak of the spawning period, the condition factor and hepatosomatic indices decreased suggesting use of stored body energy reserves during the reproduction. Spawning in batches, small-sized oocytes and a long reproductive season suggest that Astyanax aff. bimaculatus fits to an opportunist strategy. Such strategy may facilitate the use of a wide range of lentic and lotic body waters in the Neotropical region.
DOI: 10.6084/m9.figshare.11267810.v1
title: In vitro Evaluation of PHBV/PCL Blends for Bone Tissue Engineering

description: The objective of this study was to evaluate Vero cells in in vitro biocompatibility tests with pure PHBV and PCL and 75/25 and 50/50 blends developed for bone tissue bioengineering in dense or porous forms. The biomaterials were characterized morphologically by scanning electron microscopy, (SEM) stereoscopic imaging (SI), and micrometer measurement. Cellular assay was made by MTT, morphological and cytochemistry analysis. The dense and porous scaffolds presented irregular surfaces. SEM allowed to observe details of the irregular surface throughout the dense samples and confirmed the absence of pores. It was found interconnected pores on porous samples. The porous samples were thicker than the dense samples. None of the polymers was considered toxic. Lower activity measured by MTT was observed for the 50/50 blends, suggesting a slower cell adhesion pattern. The cells were able to spread almost throughout the surface of the polymers, even into the pores. The dense and porous 50/50 samples were so brittle and difficult handling. Except for the 50/50 blends, the polymers were generally good substrates for the cells, were non-toxic, and exhibited the recommended morphological features. In addition, these biomaterials did not inhibit specific biological responses identified at the cytochemical level.
DOI: 10.6084/m9.figshare.11267795.v1
title: Development of Geopolymers for Catalyst Support Applications

description: A geopolymer with high specific surface area was synthesized from metakaolin, amorphous silica and KOH, in the absence of foaming or saponification agents. The mixture modelling technique was selected for this study among the Design of Experiments tools, using surface area and total pores volume as response variables. The Si/K = 2.46 and Si/Al = 1.37 ratios lead to the optimal experimental conditions, allowing the formation of a geopolymer having a specific surface area of 75 m2/g and total pores volume of 0.28 cm3/g. The pores had a bimodal pore size distribution (7 and 20 nm). In spite of its amorphous nature, this structure is similar to zeolites in terms of ion exchange and metal ions accommodation. Therefore, this study envisages its application as a catalyst support.
DOI: 10.6084/m9.figshare.11267804.v1
title: Gonadal development and reproductive period of the characin Astyanax aff. bimaculatus (Characiformes: Characidae) in a tropical reservoir in southeastern Brazil

description: ABSTRACT The gonadal development of the characin Astyanax aff. bimaculatus from Funil Reservoir, an impoundment in the middle reaches of the Paraiba do Sul River in southeastern Brazil was analysed through histological, histochemical and histometric techniques, and the spawning season was determined. Unbalanced sex ratio was found, with females outnumbering and reaching larger sizes than males. The following stages of oogenic cell development were identified for females: primary growth, pre-vitellogenic (cortical alveolar) and vitellogenic. In males, the following stages were determined: spermatogonia primary and secondary, spermatocyte primary and secondary, spermatid and spermatozoa. The spawning occurs most of the year, peaking in January-February, as indicated by the gonadosomatic index. In the peak of the spawning period, the condition factor and hepatosomatic indices decreased suggesting use of stored body energy reserves during the reproduction. Spawning in batches, small-sized oocytes and a long reproductive season suggest that Astyanax aff. bimaculatus fits to an opportunist strategy. Such strategy may facilitate the use of a wide range of lentic and lotic body waters in the Neotropical region.
DOI: 10.6084/m9.figshare.11267777
title: Maize productivity in succession to cover crops, nitrogen fertilization and inoculation with Azospirillum brasilense

description: ABSTRACT The use of microorganisms in agriculture such as Azospirillum brasilense and the cultivation of cover crops in the off season, together with nitrogen fertilization, may be interesting alternatives to increase crop yield. The objective of this study was to evaluate the growth, production and nitrogen concentration of maize grown in succession to cover crops and their interactions with A. brasilense inoculation and topdressing mineral N fertilization. The experiment was conducted on Oxisol, in randomized block design in split-split-plot scheme with four repetitions. The plots consisted of four cover crops: jackbean (Canavalia ensiformis), dwarf pigeon pea (Cajanus cajan), crotalaria (Crotalaria spectabilis) and spontaneous vegetation. In the subplots, with or without inoculation of A. brasilense in maize seeds, and in the sub-subplots: with or without topdressing N fertilization. It was verified that jackbean can generate increments of up to 8.3% in grains per ear, 6.9% in length of ear and 15.2% in mass of one hundred grains. Consequently, the grain yield was higher in this treatment (18%). The inoculation with A. brasilense and topdressing N fertilization did not generate significant increments in maize production components, as observed for cover crops.
DOI: 10.6084/m9.figshare.11267777.v1
title: Maize productivity in succession to cover crops, nitrogen fertilization and inoculation with Azospirillum brasilense

description: ABSTRACT The use of microorganisms in agriculture such as Azospirillum brasilense and the cultivation of cover crops in the off season, together with nitrogen fertilization, may be interesting alternatives to increase crop yield. The objective of this study was to evaluate the growth, production and nitrogen concentration of maize grown in succession to cover crops and their interactions with A. brasilense inoculation and topdressing mineral N fertilization. The experiment was conducted on Oxisol, in randomized block design in split-split-plot scheme with four repetitions. The plots consisted of four cover crops: jackbean (Canavalia ensiformis), dwarf pigeon pea (Cajanus cajan), crotalaria (Crotalaria spectabilis) and spontaneous vegetation. In the subplots, with or without inoculation of A. brasilense in maize seeds, and in the sub-subplots: with or without topdressing N fertilization. It was verified that jackbean can generate increments of up to 8.3% in grains per ear, 6.9% in length of ear and 15.2% in mass of one hundred grains. Consequently, the grain yield was higher in this treatment (18%). The inoculation with A. brasilense and topdressing N fertilization did not generate significant increments in maize production components, as observed for cover crops.
DOI: 10.6084/m9.figshare.11267747
title: Protein profile as a quality indicator of cryopreserved semen from Tambaqui Colossoma macropomum (Cuvier, 1818)

description: Abstract The aim of this study was to evaluate the association between proteins in the seminal plasma of tambaqui Colossoma macropomum (Cuvier, 1818) with seminal quality indicators after thawing. The semen was cryopreserved with a dilution based on BTS with 8% DMSO. A 200 µL sample of semen from each animal was diluted in 800 µL BTS, centrifuged at 800 rpm, and the supernatant was cryopreserved to further analyze of the protein profile of seminal plasma through one-dimensional electrophoresis (SDS-PAGE). After 15 days of cryopreservation, a cryopreserved semen straw was thawed to analyze both qualitative and quantitative parameters. When considering all collections, the SDS-PAGE identified 15 protein bands in the seminal plasma of tambaqui. When the interaction (presence or absence) between proteins observed in the seminal plasma and the post thawed spermatic parameters was evaluated, we observed a great influence of the presence of proteins on spermatic quality. A greater (P&lt;0.05) fertilization rate was observed with the presence of proteins 12, 34, 44, 85, and 90 kDa. Proteins in seminal plasma of tambaqui influenced the spermatic quality after thawing, and thus, they can be utilized as an indicator of sperm quality, especially the proteins with a molecular weight ≤ 50 kDa.
DOI: 10.6084/m9.figshare.11267744
title: Liquid whey protein concentrates as primary raw material for acid dairy gels

description: Abstract The replacement of dehydrated products such as whey protein concentrates and isolates (WPC and WPI) by liquid whey protein concentrates (LWPC) obtained by ultrafiltration can be an excellent alternative for the production of innovative dairy products. Thus, the aim of this work is to study the gelation properties of LWPC as raw material for acid-induced dairy gels. Acid-induced gels were produced with non-defatted LWPC, with or without fortification with skimmed milk powder (SMP), by bacterial fermentation and by glucono-δ-lactone (GDL) acidification. The fermented systems (yogurt type acid gels) produced weaker gel structures than the equivalent chemically acidified gels (dessert type acid gels). It was also observed that molecular rearrangement continues during cold storage and that fortification with SMP favoured gelation. Whey-based dairy gels obtained by fermentation or by glucono-δ-lactone acidification presented viscoelastic behaviour, appealing functional and nutritional properties, and their utilization can effectively contribute to the reduction of waste.
DOI: 10.6084/m9.figshare.11267738
title: Electrocatalytic behavior toward nitrite of a hybrid film of fosfomolybdate and organomodified silica

description: ABSTRACT Nanostructured organic-inorganic hybrid materials are produced for the purpose of developing and / or enhancing a property of interest. One way of obtaining hybrid materials is by immobilizing an inorganic component in an organically modified silica (ormosil) network. In this study, a Keggin type polyoxometalate, phosphomolybdic acid (HPMo), was entrapped into a silica network modified with 3- (Trimethoxysilyl) propyl methacrylate (TMPM) and a thin film of this hybrid material was deposited on a gold electrode by the dip coating method. The electrochemical reactivity of this film was explored toward nitrite ion, where the catalytic electroreduction occurred at 0.0 V vs. Ag / AgCl. The linear concentration range obtained using cyclic voltammetry was 0.20 - 1.0 mmol L-1 in acidic medium pH 1.0. 31P Nuclear Magnetic Resonance spectroscopy showed that HPMo remains intact in the ormosil network. In addition, HPMo is interacting with methacrylate groups through hydrogen bonds as shown by infrared absorption spectroscopy. The hybrid film developed here could be used for the improvement of systems able of detecting nitrite.
DOI: 10.6084/m9.figshare.11267747.v1
title: Protein profile as a quality indicator of cryopreserved semen from Tambaqui Colossoma macropomum (Cuvier, 1818)

description: Abstract The aim of this study was to evaluate the association between proteins in the seminal plasma of tambaqui Colossoma macropomum (Cuvier, 1818) with seminal quality indicators after thawing. The semen was cryopreserved with a dilution based on BTS with 8% DMSO. A 200 µL sample of semen from each animal was diluted in 800 µL BTS, centrifuged at 800 rpm, and the supernatant was cryopreserved to further analyze of the protein profile of seminal plasma through one-dimensional electrophoresis (SDS-PAGE). After 15 days of cryopreservation, a cryopreserved semen straw was thawed to analyze both qualitative and quantitative parameters. When considering all collections, the SDS-PAGE identified 15 protein bands in the seminal plasma of tambaqui. When the interaction (presence or absence) between proteins observed in the seminal plasma and the post thawed spermatic parameters was evaluated, we observed a great influence of the presence of proteins on spermatic quality. A greater (P&lt;0.05) fertilization rate was observed with the presence of proteins 12, 34, 44, 85, and 90 kDa. Proteins in seminal plasma of tambaqui influenced the spermatic quality after thawing, and thus, they can be utilized as an indicator of sperm quality, especially the proteins with a molecular weight ≤ 50 kDa.
DOI: 10.6084/m9.figshare.11267744.v1
title: Liquid whey protein concentrates as primary raw material for acid dairy gels

description: Abstract The replacement of dehydrated products such as whey protein concentrates and isolates (WPC and WPI) by liquid whey protein concentrates (LWPC) obtained by ultrafiltration can be an excellent alternative for the production of innovative dairy products. Thus, the aim of this work is to study the gelation properties of LWPC as raw material for acid-induced dairy gels. Acid-induced gels were produced with non-defatted LWPC, with or without fortification with skimmed milk powder (SMP), by bacterial fermentation and by glucono-δ-lactone (GDL) acidification. The fermented systems (yogurt type acid gels) produced weaker gel structures than the equivalent chemically acidified gels (dessert type acid gels). It was also observed that molecular rearrangement continues during cold storage and that fortification with SMP favoured gelation. Whey-based dairy gels obtained by fermentation or by glucono-δ-lactone acidification presented viscoelastic behaviour, appealing functional and nutritional properties, and their utilization can effectively contribute to the reduction of waste.
DOI: 10.6084/m9.figshare.11267717
title: Phase and microstructural analysis of NdTi0.8M0.2O3.4 (M = Al, Ga) microwave ceramics

description: ABSTRACT In this paper, we report the characterization of NdTi0.8M0.2O3.4 (M = Ga, Al) ceramics prepared via mixed oxide solid state sintering route. X-ray diffraction analysis of the samples revealed the formation of single phase for NdTi0.8Ga0.2O3.4 sample while secondary phase was formed in the case of NdTi0.8Al0.2O3.4. Microstructural analysis of the sample showed dense packed grains. NdTi0.8M0.2O3.4 with M = Ga and Al exhibited a dielectric constant (er) = 34, quality factor (Q×f) = 9,776 and 10,867 GHz and temperature coefficient of resonance frequency (τf) = -113 and -90 ppm/oC, respectively. Further work is required on tuning the low τf of the samples for possible applications in the GHz frequency range.