Sobre a ocorrência de istmo tiroídeo em Canis familiaris e em Callus gallus. Estudo comparativo

It is described an abnormal occurrence of thyroideus isthmus in dog (Canis familiaris) and in fowl (Gallus gallus). This observation is verified in 2 dogs between 60 studied and in 3 fowls between 32 studied, respectively. Histological studies of both isthmus have demonstrated the same morphological constitution of the normal thyroideus lobes with morphological vidences of active secretion in parechyma.É descrita uma ocorrência anormal de istmo tiroídeo em cão (Canis familiaris) e em ave (Gallus gallus). Esta observação foi verificada em 2 cães, dentre 60, e em 3 aves, dentre 32, respectivamente estudados. Estudos histológicos de ambos os istmos demonstraram a mesma constituição morfológica que a dos lobos tiroídeos normais, com evidências morfológicas de secreção ativa pelo parênquima

Anatomical closure of the ductus arteriosus in the dog (Canis familiaris)

The observation of the anatomical closure of foramen ovale was carried out in 124 pups (57 males and 67 females), with age varying between 3 hours and 21 days old. We have observed that in the animals sacrified with one day old, the foramen ovale was pervious in 100% of them; two days old, in 16% of the animals; three days old, in 18% of the dogs; four days old, in 50% of the pups, and over six days old, the ductus venosus was anatomically closed in100% of the studied pups.A observação do fechamento anatômico do foramen oval foi feita em 124 cães, sem raça definida (57 machos e 67 fêmeas), com idade variando entre 3 horas e 21 dias de vida. Notou-se que nos animais com até 1 dia de vida, o foramen oval apresentava-se aberto em todos os casos. Nos animais com 2 dias, foram encontrados 16% de foramens fechados; com 3 dias dc vida, 18% dos foramensexaminados estavam obliterados; com 4 dias de vida, 50%; com 5 dias, 62%, e acima de 6 dias de vida, o foramen oval se apresentouanatomicamente fechado em 100% dos casos examinados

Anatomical pattern of the umbilical artery (round lig. of the urinary bladder) and urogenital artery in the guinea pig (Cavia porcellus, L., 1756)

This work deals with the study of the visceral branches of the internal iliac artery in guinea pig. Twenty animals (10 males and 10 females), adults were sacrificed with ethylic ether, injected with contrasting substance into abdominal aorta and dissected through stereoscopic microscope. In results were described the origin and permeability of the umbilical artery and the origin and branching of the urogenital artery. These observations in the guinea pig were comparatively discussed with others similarly described in several mammalians including: another laboratorial rodents, cat, dog, rabbit and man.Foi realizado estudo anatômico dos ramos viscerais da a. ilíaca interna na cobaia. Foram utilizadas 20 cobaias (10 machos e 10 fêmeas), adultas, sacrificadas com éter etílico (saturação anestésica), injetadas com contraste na aorta abdominal (látex corado) e dissecadas sob lupa. Em resultados são descritas a origem e a perviedade da a. umbilical e a origem e a ramescência da a. urogenital. Estas observações na cobaia foram comparativamente discutidas com outras semelhantemente descritas em diferentes mamíferos incluindo: outros roedores de laboratório, gato, cão, coelho e Homem

Massa de Schlesinger e angioarquitetura do testículo de Gallus gailus - Indian River

It is described the testicular angioarchitccture in Gailusgallus, Indian River. The authors have verified types of extra andintra-testicular arteries. The possible functional significance of thisfeature is discussed. The Schlesinger’s mass appears to be very adequateto this study which is selective to the arterial compartiment.É descrita a angioarquitetura testicular em Gallus gailus, Indian River. Os aa. verificaram modalidades de artérias testiculares extra e intra-glandulares. O possível significado funcional destas ocorrências é discutido. A massa de Schlesinger se caracteriza como muito adequada a este estudo, a qual se torna seletiva ao compartimento arterial

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost

Comparação entre métodos de estimativa da evapotranspiração de referência (ETo) na região Norte Fluminense, RJ Comparison of estimation methods of reference crop evapotranspiration (ETo) for Northeren Region of Rio de Janeiro State, Brazil

Este estudo foi desenvolvido na Estação Evapotranspirométrica da UENF, instalada na área da Estação Experimental da PESAGRO-Rio, em Campos dos Goytacazes, RJ. Um lisímetro de pesagem com 6 m² de área, dotado de células de carga, foi instalado no centro de uma área de 900 m², cultivada com grama tipo Batatais (P. notatum L.). O objetivo deste estudo foi propor coeficientes de ajuste regional entre o método lisimétrico e os métodos de Penman-Monteith-FAO, Makkink, Linacre, Jensen-Haise, Hargreaves-Samani, Radiação Solar, Tanque Classe "A"e Atmômetro SEEI modificado para os períodos de 1, 3, 7 e 10 dias. Os resultados obtidos indicam que, com exceção do Atmômetro, todos os métodos avaliados atendem satisfatoriamente à estimativa da ETo na região Norte Fluminense do Estado do Rio de Janeiro, apresentando bons ajustamentos para períodos maiores que sete dias.<br>The aim of this research paper was to make a comparison between the reference values of crop evapotraspiration acquired through the lysimeter and the FAO-modified Penman-Monteith, Solar Radiation, Makkink, Linacre, Jensen-Haise, Hargreaves-Samani, PAN "Class A"and modified SEEI Atmometer methods. Data was obtained from the meteorological station at PESAGRO-Rio, located at Campos dos Goytacazes in the State of Rio de Janeiro State, Brazil. Results have shown that for the northern region of Rio de Janeiro, the methods tend to be well adjusted to the reference values of the crop evapotranspiration as to those obtained through the lysimeter. Nonetheless, good adjustments were obtained for intervals longer than seven-day periods when using the indirect and evaporimeter methods

Gait Training with Functional Electrical Stimulation Improves Mobility in People Post-Stroke

(1) Background: Stroke is one of the leading causes of disability. To identify the best treatment strategies for people with stroke (PwS), the aim of the current study was to compare the effects of training on a treadmill with functional electrical stimulation (TT-FES) with training on a treadmill (TT), and to analyze the effects of sequence of training on mobility and the parameters of walking ability. (2) Methods: Prospective, longitudinal, randomized and crossover study, in which 28 PwS were distributed into groups, namely the A-B Group (TT-FES followed by TT) and B-A Group (TT followed by TT-FES), using the foot drop stimulator, and were measured with functional tests. (3) Results: We found improved mobility, balance, non-paretic limb coordination, and endurance only in the group that started with TT-FES. However, sensorimotor function improved regardless of the order of training, and paretic limb coordination only improved in the B-A Group, but after TT-FES. These data indicate that the order of the protocols changed the results. (4) Conclusions: Although biomechanical evaluation methods were not used, which can be considered a limitation, our results showed that TT-FES was superior to isolated training on a treadmill with regard to balance, endurance capacity, and coordination of the non-paretic limb