Bioindicators of erosive dynamics in beach and dune systems in the portuguese mainland coast

The litoral psammophilic ecosystems are organized according gradients leaning from the sea to interior areas, including a succession of phytosociological associations, correspondent to well discriminate biotopes, according their geomorphologic, soil and ecological characteristics. In the stable sandy shores (in terms of erosion balance), the different communities occupy relatively wide zonal tracks, with clear transitions. However, in situations of beach downwasting and coastline retreat, the mobile sands tend to advance inland, often compressing the zonal gradient, and distinct communities tend to overlap. Since the herbaceous hemicryptophitic flora typical from the beach and instable dunes has intrinsic colonization skills, high tolerance (or even preference) to burial, and elevated growing rates, it can quickly adapt to the instability of the topographic surface, accompanying its movement to the interior. Yet, the growing rates of the woody chamaephitic vegetation, characteristic of the more interior and relatively stable dune (gray dune) are slower, in addition to a lower capability to resist to burial. Thus, sea advance and inherent sands mobility inland, combined with the dissimilar resilience of plant associations, results in the in the overlap of the chamaephitic taxa and in the amalgamation of species from different communities. The main objective of this work was to study general trends of erosion along the Portuguese softline mainland coast, based in the analysis of the dominant associations that occur along the psammophilic gradient. It was focused in the role played by some plants has bioindicators of the velocity of erosional processes caused by wind transportation, sea dynamics and coastal retreat. Plants that can be used has reliable bioindicators are identified. Correlations between the observed alterations in the theoretical model of a coastal psammophilic gradient, and the intensity of erosion are established. The intensity of the phenomenon is analyzed and quantified along different sectors of the Portuguese coast

New insights on the psammophilic gradient applying a multidisciplinary biogeochemical based approach - a case study in the Mediterranean Region of the Portuguese coast

From the point of view of plant life, the communities of recent coastal beaches and sand dunes (with ages inferior to 4000 years B. P.) are submitted to a stressful and harsh environment, generally characterized by incipient or inexistent pedogenetic evolution of the oligotrophic sands, weak water retention capacity and total absence of podzolization. In the biogeographical Mediterranean Region of the Portuguese coast, the climatic conditions are also severe. Major features are hot and long summers, short winters, low and concentrate precipitation patterns, weak incidence of aestival fogs, and increasing temperatures in the South. The unique spatial position of interface between the sea and land, and consequent environmental extreme conditions, result in original, sensitive, and valuable habitats, distributed along a well marked littoral-inland psammophilic gradient. This vegetation shows a notorious succession of segregated communities, (geopermasig-metum), that follows a clear geomorphological zonation (embryonic, primary and semi-stabilized dunes). The thermophilic conditions, the sea salt influence, the wind, the mobility of the sand, the waves action and the oligotrophic conditions, determine the occurrence of specific and highly adapted plant associations, confinedto that specific type of habitat, having few species in common with other terrestrial ecosystems. Specialized in relatively spatially isolated and low sized communities, they are endowed with important ecological services and high interest for conservation

Influence of insect population and grain yield of upland rice

O estudo de tecnologias empregadas no arroz de sequeiro indicou que a incorporação de restos culturais ao solo, após a colheita, o uso de armadilhas luminosas, a adubação com  fósforo, potássio e zinco, e inseticidas na forma de isca interferiram na atividade das populações de insetos que ocorrem na cultura. A compactação do solo após a semeadura foi a tecnologia que proporcionou a melhor resposta em relação à produção de grãos.Studies on upland rice adopting different techniques indicated that the incorporation of stubbles in the soil soon after harvest, the use of light traps, the fertilization with phosphorus, potassium and zinc and attractant insecticide affected the activity of insect populations that occurred on the crop. Soil compactation after seeding was the practice that gave better response in relation to grain yield

Gallbladder adenocarcinoma: evaluation of the prognostic factors in 100 resectable cases in Brazil

BACKGROUND: In spite its relative rarity, gallbladder adenocarcinoma is a neoplasm who presents an aggressive biologic behavior. The single curative treatment has been radical surgical resection with free margin. Prognostic factors has been studied because are very important to identify long-term survival patients which may benefit of aggressive surgical resection. AIM: To evaluate long-term prognostic predictors from gallbladder cancer. METHODS: The medical records of all patients that presented confirmed histological diagnosis of gallbladder adenocarcinoma operated over a 14 year period were identified and retrospectively reviewed. Uni and multivariate analysis was done. RESULTS: Total sample was 100 patients. Median age was 71 years (34 to 93). There were 17 men and 83 women. Lesion distribution according to TNM stage system was: I (n=22), II (n=59), III (n=6), IV (n=4) and unknown (n=9). Fifty two patients underwent radical resection (R0) while 48 to palliative surgery (R1-R2). Overall major morbidity was 14%, while postoperative surgical mortality rate (30th postoperative day) was 12 %. Five-year survival rate was 28% while median of survival was 10 months. Multivariate analysis identified six prognostic factors: T stage, serum level of CA 19.9, gallbladder perforation, lymphatic embolization, surgical historical cohort (after 2002) and hilar lymphadenectomy. CONCLUSION: Prognostic factors were: T stage, serum level of CA 19.9, gallbladder perforation, lymphatic embolization, surgical historical cohort and hilar lymphadenectomy.RACIONAL: A despeito da sua relativa raridade, o adenocarcinoma de vesícula biliar é neoplasia que apresenta comportamento biológico agressivo. O único tratamento curativo tem sido a ressecção cirúrgica radical com margem livre. Fatores prognósticos têm sido estudados por serem importantes para identificar pacientes que podem se beneficiar de ressecção cirúrgica agressiva. OBJETIVO: Avaliar preditores prognósticos em longo prazo de pacientes com câncer da vesícula biliar. MÉTODOS: Foram identificados e retrospectivamente revisados os prontuários médicos de todos os doentes submetidos a tratamento cirúrgico que apresentavam diagnóstico histológico confirmado de adenocarcinoma de vesícula biliar durante período de 14 anos. Os dados foram submetidos à análise estatística uni e multivariada. RESULTADOS: A amostra total foi de 100 doentes. A mediana de idade foi de 71 anos (34 a 93). Houve 17 mulheres e 83 homens. A distribuição das lesões de acordo com o sistema de estadiamento TNM foi: I (n=22), II (n=59), III (n=6), IV (n=4) e desconhecido (n=9). Cinquenta e dois doentes foram submetidos à ressecção radical (R0) enquanto 48 à cirurgia paliativa (R1-R2). A morbidade global foi de 14% enquanto que a mortalidade pós-operatória (até 30º dia do pós-operatório) foi de 12 %. A taxa de sobrevida em cinco anos foi de 28% enquanto a mediana de sobrevida foi de 10 meses. A análise multivariada identificou seis fatores prognósticos: estádio T, nível sérico de CA 19.9, perfuração da vesícula biliar, embolização linfática, coorte cirúrgico histórico e linfadenectomia hilar. CONCLUSÃO: O tratamento do câncer de vesícula biliar apresenta alta morbimortalidade. Os fatores prognósticos foram: estádio T, nível sérico de CA 19.9, perfuração da vesícula biliar, embolização linfática, coorte cirúrgico histórico e linfadenectomia hilar.HSPE FMO Hospital Francisco Morato de OliveiraUniversidade Federal de São Paulo (UNIFESP)UNIFESPSciEL

Avaliação do efeito de populações de insetos sobre a produtividade do arroz de sequeiro pelo uso de regressão múltipla

The influence of insects on rice yield was studied using multiple regression step wise procedure. The equations with maximum values of coefficient of determinations (R2) were selected. The regression equations established for 1977/78. 1978/79, 1979/80 indicated that the insect populations were responsible for 23.6, 28.4 and 34.6% grain yield loss, respectively. The results further indicated that the presence of some other insects showed positive effect on yield.A influência dos insetos na produtividade do arroz de sequeiro foi estudada através de regressão múltipla (stepwise) de máximo coeficiente de determinação (R2). As equações de regressão estabelecidas para 1977/78, 1978/79 e 1979/80 indicaram que algumas populações de insetos proporcionaram perdas de produção de 23,6, 28,4 e 34,6%, respectivamente, enquanto que outras mostraram efeitos positivos na produtividade

Controle de biótipos resistentes de Conyza bonariensis com glyphosate + clorimuron-etílico em função do estádio de desenvolvimento

Desiccation is considered the initial crops management and one of the most important practices for soybean deployment in no-tillage system. After starting the cultivation of transgenic soybean, the use of glyphosate in this crop increased expressively and provided Conyza bonariensis selection resistant to this herbicide. This study aimed to evaluate the efficacy of glyphosate in association with chlorimuron-ethyl in controlling glyphosate-resistant C. bonariensis, at different growth development stages. Eight treatments were constituted by the associated use of 2.5 L ha-1 of glyphosate (1250 g a.e.ha- 1) and 60 g ha-1 (15 g a.i. ha- 1) of chlorimuron - ethyl in plants with 3 leaves, 4 to 6 leaves, 6 to 9 leaves, 10 to 13 leaves, 13 to 16 leaves, 20 leaves, in flowering stage and a control without application. Experimental design was a randomized block with six replications. Visual control evaluations were performed at 7, 15 and 21 days after application (DAA), also determining leaves dry mass. Excellent control was found by using the association of glyphosate + chlorimuron-ethyl at plants < 9 leaves.A dessecação é considerada o manejo inicial das lavouras e uma das práticas mais importantes para implantação da cultura da soja no sistema de plantio direto. Com o cultivo de soja transgênica, a utilização de glyphosate aumentou acentuadamente e proporcionou a seleção de Conyza bonariensis resistente a esse herbicida. Assim, este trabalho teve como objetivo avaliar a eficácia do glyphosate em associação com clorimuron-etílico no controle C. bonariensis resistente ao glyphosate, em estágios crescentes de desenvolvimento. Os oito tratamentos foram constituídos pelo uso associado de 2,5 L ha-1 de glyphosate (1250 g e.a. ha-1) e 60 g ha-1 (15 g i.a. ha-1) de clorimuron-etílico em plantas com 3 folhas, 4 a 6 folhas, 6 a 9 folhas, 10 a 13 folhas, 13 a 16 folhas, 20 folhas, em florescimento e uma testemunha sem aplicação. O delineamento utilizado foi o inteiramente casualizado, com seis repetições. Avaliações visuais de controle foram efetuadas aos 7, 15 e 21 dias após a aplicação (DAA), onde também determinou-se a massa seca da parte aérea das plantas. Obteve-se excelentes níveis de controle de C. bonariensis resistente ao glyphosate utilizando a associação de glyphosate + clorimuron-etílico em plantas com até 9 folhas

Static magneto optical birefringence of New Electric Double Layered Magnetic Fluids

Magnetic birefringence measurements are performed under a static eld on Electric Double Layered Magnetic Fluids based on copper and zinc ferrite nanostructures. The optical birefringence is related to a single-particle e ect and well described by a Langevin model which includes a lognormal distribution of particles. By the eld-induced birefringence level, these new magnetic fluids are comparable to usual ones, a result which could o er a new way for biological applications

Effects of Whole-Body Vibration in Hematobiochemical and Hemogasometric Parameters in Adult and Elderly Healthy Dogs

Background: Whole-Body Vibration (WBV) consists of mechanical vibration stimuli produced that propagate throughout the body by increasing the gravitational load. The WBV can increase muscle mass in dogs with muscular atrophy. As Whole-body vibration (WBV) can be used as exercise modality with no impact on the joints, the present study aimed to evaluate the effects of single session of WBV in hematobiochemical and hemogasometric parameters in adult and elderly healthy dogs. Materials, Methods & Results: Fourteen clinically healthy, neutered crossbreed male dogs, non-athlete were selected. The dogs were divided into two groups of seven dogs, according to the age group: Group I - adult dogs (GI): age between 12.0 and 84.0 months old; Group II - elderly dogs (GII): age above 84.0 months old. All dogs were submitted to a single session WBV by using a vibrating platform that delivered a vortex wave circulation as mechanical vibration. The WBV protocol used was 30 Hz frequency (3.10 mm peak displacement; 11.16 m/s2 peak acceleration; 0.29 m/s velocity), then 50 Hz (3.98 mm peak displacement; 39.75 m/s2 peak acceleration; 0.62 m/s velocity), and lastly 30 Hz (3.10 mm peak displacement; 11.16 m/s2 peak acceleration; 0.29 m/s velocity) for 5-min between de frequencies. The hematobiochemical and hemagasometric parameters were evaluated at 1-min before the WBV session (1PRE), 1-min after the WBV session (1POST), 120-min (120POST) and 24 hours after the WBV session (24hPOST). The dogs accepted well the vibration stimulus, however, elderly dogs weighting above 30 kg were more likely to sit down with increased frequency from 30 to 50 Hz. No variations of food and water intakes and gastrointestinal changes were observed after the WBV session. Hemoglobin values showed significant decrease (P = 0.0312) between 1PRE and 1POST in elderly dogs. A significant decrease (P = 0.0453) was observed in alanine aminotransferase values between 120POST and 14hPOST in adult dogs. Creatinine values had a statically decrease (P = 0.0173) between 1PRE and 24hPOST in adult dogs. However, these values remained within the reference range for dogs. Discussion: According to the literature, there are no studies related to the effects of WBV in haematobiochemical and hemogasometric parameters in adult and elderly dogs. No deleterious effects regarding to a single session of WBV were observed, however harmful effects were observed in human patients. The elderly dogs with body mass above 30 kg tried to sit during the increased frequency from 30 to 50 Hz, which was associated with the pressure exerted in their paws. No significant differences were observed in erythrogram and leukogram parameters except for hemoglobin values. Significant decline was observed in hemoglobin values in adult Beagle dogs; and were associated with hemolysis. The significant decrease in alanine aminotransferase and creatinine values did not have clinical significance. No significant alterations were identified in hemogasometric parameters but slight increase in pH values was observed in horses subjected to a 60 km run, and was associated to the loss of Cl ions in sweat. The single session of WBV by using a vibrating platform that delivered a vortex wave circulation, at 30 and 50 Hz frequencies for 5 min did not induced significant changes in hematobiochemical and hemogasometric parameters in adults and elderly healthy dogs

A IDENTIFICAÇÃO DE JOVENS TALENTOS DE FUTEBOL ATRAVÉS DA ANÁLISE DO PERFIL ANTROPOMÉTRICO E DO DESEMPENHO MOTOR

O futebol é uma das modalidades mais praticada do mundo, e apresenta características especificas para que os seus praticantes destaquem-se entre tantos praticantes. Tendo como principal objetivo identificar talentos esportivos a partir da analise do perfil antropométrico e de desempenho motor em jovens atletas da modalidade de futebol no município de Juazeiro do Norte – Ceará. A presente pesquisa é de caráter descritivo, de campo com abordagem quantitativo. A população considerada jovens atletas de escolinhas de base da modalidade de futebol. Tendo uma amostra de 24 atletas com faixa etária entre 9 a 15 anos. Os testes utilizados na pesquisa foram os testes referentes à aptidão física relacionada à saúde: Massa corporal, Estatura, Índice de massa corporal, Flexibilidade, Força-resistência abdominal, Resistência geral e Testes referentes ao desempenho motor: Força explosiva de membros inferiores, Força explosiva de membros superiores arremesso de medicineball, Agilidade, Velocidade de deslocamento. Verificamos nesse estudo algumas valências físicas de desempenho motor em baixos níveis como a agilidade e velocidade, e como também foi encontrado uma excelência em relação à resistência aeróbica geral dos jovens atletas. Podemos destacar poucos atletas e identificar características especificas por atleta, o quadro geral dos jovens encontra-se muito próximos