476 research outputs found
MANEJO FLORESTAL EM LlNHARES - CRESCIMENTO EM FUNĂĂO DE DIFERENTES NĂVEIS DE INTERVENĂĂO
Com o objetivo de conhecer o efeito de diferentes intensidades de exploração em uma ĂĄrea de floresta de tabuleiro da Mata Atlântica, foi instalado um ensaio de manejo florestal sustentado na Reserva Florestal de Unhares, pertencente Ă Companhia Vale do Rio Doce - CVRD, localizada no municĂpio de Unhares (ES). O delineamento estatĂstico do ensaio foi o de blocos ao acaso, com cinco repetiçþes e nove tratamentos. O ensaio foi instalado em 1980 e as avaliaçþes foram efetuadas atravĂŠs dos dados coletados nos inventĂĄrios inicial (1980), pĂłs-exploratĂłrio (1980) e contĂnuos (1983, 1987 e 1990)
PERFIL NUTRICIONAL DE HIPERTENSOS EM ACOMPANHAMENTO EM UNIDADES BĂSICAS DE SAĂDE DO MUNICĂPIO DE SĂO LUĂS â MA
A HipertensĂŁo Arterial (HA) ĂŠ considerada um problema de saĂşde pĂşblica, muitas vezes assintomĂĄtica e de difĂcil controle, que pode levar a seqĂźelas irreversĂveis. O objetivo deste estudo foi avaliar o estado nutricional e o consumo alimentar de pacientes hipertensos. Realizou-se um estudo transversal, com pacientes hipertensos cadastrados no programa HiperDia (MS), em acompanhamento em duas Unidades BĂĄsicas de SaĂşde, em SĂŁo Luis â MA, no perĂodo de fevereiro de 2010 a janeiro de 2011. Foram analisados dados socioeconĂ´micos, demogrĂĄfcos, estilo de vida, antropomĂŠtricos e dietĂŠticos. Para avaliar o estado nutricional foram utilizados o Ăndice de Massa CorpĂłrea (IMC) e a CircunferĂŞncia da Cintura (CC), segundo as recomendaçþes propostas pela Organização Mundial de SaĂşde (OMS). Para avaliar o consumo energĂŠtico e de nutrientes foi utilizado o mĂŠtodo do registro alimentar de trĂŞs dias, transformados posteriormente em recordatĂłrio alimentar de 24 horas (R24h). Foram avaliados 184 pacientes, com mĂŠdia de idade de 60,8 Âą 12,9 anos, sendo a maioria do sexo feminino (76,6%), de cor nĂŁo branca (85,9%), com menos de oito anos de escolaridade (75%) e com renda familiar inferior a quatro salĂĄrios mĂnimos (53,3%). Quanto ao estilo de vida, 94,6% nĂŁo fumavam, 80,4% nĂŁo ingeriam bebida alcoĂłlica e 77,6% eram sedentĂĄrios. Houve prevalĂŞncia de excesso de peso entre a amostra estudada (69,0%). A proporção de pacientes com obesidade abdominal foi de 54,3%, com maior frequĂŞncia entre as mulheres (64,5%). Os percentuais de macronutrientes encontraram-se adequados, entretanto, o consumo energĂŠtico e de fbra encontraram-se abaixo do recomendado, segundo as DRIâs (2002). Assim, houve predomĂnio de excesso de peso e de obesidade abdominal e o consumo energĂŠtico foi inadequado para ambos os sexos.Descritores: HipertensĂŁo Arterial; Estado Nutricional; Consumo Alimentar; Macronutrientes. Abstract:  Arterial Hypertension (AH) is considered a problem of public health, often asymptomatic and diffcult to control, which can lead to irreversible sequels. The objective of this study was to evaluate the nutritional status and dietary intake of hypertensive patients. We conducted a cross-sectional study with hypertensive patients enrolled in the program HiperDia (MS), followed in two Basic Health Units in SĂŁo Luis - MA, from February 2010 to January 2011. We analyzed the data on socioeconomic, demographic, lifestyle, anthropometric and dietary factors. To evaluate the nutritional status, it was used the body mass index (BMI) and also the waist circumference (WC), according to the recommendations proposed by the World Health Organization (WHO). The energy and nutrients evaluation was evaluated by using the method of three-day food record, subsequently processed into 24-hour dietary recall (24HR). We appraised 184 patients with a mean age of 60.8 Âą 12.9 years, mostly female (76.6%), non-Caucasian (85.9%), with less than eight years of schooling (75%) and household income less than four minimum salaries (53.3%). About the lifestyle, 94.6% did not smoke, 80.4% did not drink alcohol and 77.6% were sedentary. There was a prevalence of overweight among the study sample (69.0%), no statistically signifcant difference between sexes. Regarding the distribution of body fat, the proportion of patients with abdominal obesity was 54.3%, according to waist circumference, more frequently among women (64.5%). The percentages of macronutrients found to be adequate, but, energy consumption and fber were under the recommended ones, according to DRIâs (2002). Thus, there was a predominance of overweight and abdominal obesity and caloric intake was inadequate for both sexes.Descriptors: Hypertension; Nutritional Status; Food Consumption; Macronutrients
Retardadores de crescimento no desenvolvimento e na qualidade ornamental de Zinnia elegans Jacq. 'Lilliput' envasada
As zĂnias tĂŞm grande potencial como plantas florĂferas envasadas e representam rĂĄpida fonte de novidade para a floricultura com o auxĂlio de retardadores de crescimento. Avaliaram-se os efeitos de retardadores de crescimento no desenvolvimento e na produção de plantas envasadas de porte baixo, compactas e atrativas de 'Lilliput' Zinnia elegans, cultivar altamente ornamental, com sementes de baixo custo. O delineamento experimental foi em blocos casualizados, com dez tratamentos (controle e trĂŞs concentraçþes de cada retardador: daminozide, paclobutrazol e chlormequat) e quatro repetiçþes (dois vasos por unidade experimental, com uma planta por vaso de 0,6 L). Paclobutrazol (0,5; 0,75 e 1,0 mg i.a. por vaso) e chlormequat (1,0; 2,0 e 3,0 g L-1) foram aplicados ao substrato (40 mL por vaso), enquanto o daminozide (2,5; 3,75 e 5,0 g L-1) foi aplicado atravĂŠs de pulverização foliar (10 mL por vaso), no estĂĄdio de gema floral apical visĂvel. Daminozide (2,5 e 3,75 g L-1), paclobutrazol (0,5; 0,75 e 1,0 mg i.a. por vaso) e 1,0 g L-1 de chlormequat reduziram significativamente a altura das plantas e o comprimento dos ramos laterais, sem afetar o diâmetro dos capĂtulos, atrasar o ciclo de produção e causar fitotoxicidade. Entretanto, as plantas nĂŁo se apresentaram suficientemente baixas e compactas para atender Ă s exigĂŞncias de qualidade do mercado. Chlormequat (2,0 e 3,0 g L-1) causou fitotoxicidade e daminozide (5,0 g L-1) aumentou o ciclo de produção.Zinnias have good potential to be used as flowering, potted plants, being a quick source of novelty for the floriculture industry with the aid of growth retardants. This study evaluated the effect of growth retardants on development and production of short, compact and attractive plants of potted 'Lilliput' Zinnia elegans, a highly ornamental zinnia with low cost seeds. Trials were set up in randomized blocks, with ten treatments (control and three treatments of each retardant: daminozide, paclobutrazol and chlormequat) and four replications (two pots per experimental unit, with one plant per 0.6-L pot). Paclobutrazol (0.5, 0.75 and 1.0 mg a.i. per pot) and chlormequat (1.0, 2.0 and 3.0 g L-1) were applied as a single drench (40 mL per pot), and daminozide (2.5, 3.75 and 5.0 g L-1) as a single foliar spray to runoff (10 mL per pot), at apical flower bud stage. Daminozide (2.5 and 3.75 g L-1), paclobutrazol (0.5, 0.75 and 1.0 mg a.i. per pot) and chlormequat at 1.0 g L-1 significantly reduced plant height and side branches length, without affecting flower diameter, delaying production cycle and causing phytotoxicity symptoms. However, plants were not short and compact enough to meet market quality demand. Chlormequat (2.0 and 3.0 g L-1) caused phytotoxicity symptoms and daminozide (5.0 g L-1) delayed production cycle
Probing exotic phenomena at the interface of nuclear and particle physics with the electric dipole moments of diamagnetic atoms: A unique window to hadronic and semi-leptonic CP violation
The current status of electric dipole moments of diamagnetic atoms which
involves the synergy between atomic experiments and three different theoretical
areas -- particle, nuclear and atomic is reviewed. Various models of particle
physics that predict CP violation, which is necessary for the existence of such
electric dipole moments, are presented. These include the standard model of
particle physics and various extensions of it. Effective hadron level combined
charge conjugation (C) and parity (P) symmetry violating interactions are
derived taking into consideration different ways in which a nucleon interacts
with other nucleons as well as with electrons. Nuclear structure calculations
of the CP-odd nuclear Schiff moment are discussed using the shell model and
other theoretical approaches. Results of the calculations of atomic electric
dipole moments due to the interaction of the nuclear Schiff moment with the
electrons and the P and time-reversal (T) symmetry violating
tensor-pseudotensor electron-nucleus are elucidated using different
relativistic many-body theories. The principles of the measurement of the
electric dipole moments of diamagnetic atoms are outlined. Upper limits for the
nuclear Schiff moment and tensor-pseudotensor coupling constant are obtained
combining the results of atomic experiments and relativistic many-body
theories. The coefficients for the different sources of CP violation have been
estimated at the elementary particle level for all the diamagnetic atoms of
current experimental interest and their implications for physics beyond the
standard model is discussed. Possible improvements of the current results of
the measurements as well as quantum chromodynamics, nuclear and atomic
calculations are suggested.Comment: 46 pages, 19 tables and 16 figures. A review article accepted for
EPJ
Search for a W' boson decaying to a bottom quark and a top quark in pp collisions at sqrt(s) = 7 TeV
Results are presented from a search for a W' boson using a dataset
corresponding to 5.0 inverse femtobarns of integrated luminosity collected
during 2011 by the CMS experiment at the LHC in pp collisions at sqrt(s)=7 TeV.
The W' boson is modeled as a heavy W boson, but different scenarios for the
couplings to fermions are considered, involving both left-handed and
right-handed chiral projections of the fermions, as well as an arbitrary
mixture of the two. The search is performed in the decay channel W' to t b,
leading to a final state signature with a single lepton (e, mu), missing
transverse energy, and jets, at least one of which is tagged as a b-jet. A W'
boson that couples to fermions with the same coupling constant as the W, but to
the right-handed rather than left-handed chiral projections, is excluded for
masses below 1.85 TeV at the 95% confidence level. For the first time using LHC
data, constraints on the W' gauge coupling for a set of left- and right-handed
coupling combinations have been placed. These results represent a significant
improvement over previously published limits.Comment: Submitted to Physics Letters B. Replaced with version publishe
Search for the standard model Higgs boson decaying into two photons in pp collisions at sqrt(s)=7 TeV
A search for a Higgs boson decaying into two photons is described. The
analysis is performed using a dataset recorded by the CMS experiment at the LHC
from pp collisions at a centre-of-mass energy of 7 TeV, which corresponds to an
integrated luminosity of 4.8 inverse femtobarns. Limits are set on the cross
section of the standard model Higgs boson decaying to two photons. The expected
exclusion limit at 95% confidence level is between 1.4 and 2.4 times the
standard model cross section in the mass range between 110 and 150 GeV. The
analysis of the data excludes, at 95% confidence level, the standard model
Higgs boson decaying into two photons in the mass range 128 to 132 GeV. The
largest excess of events above the expected standard model background is
observed for a Higgs boson mass hypothesis of 124 GeV with a local significance
of 3.1 sigma. The global significance of observing an excess with a local
significance greater than 3.1 sigma anywhere in the search range 110-150 GeV is
estimated to be 1.8 sigma. More data are required to ascertain the origin of
this excess.Comment: Submitted to Physics Letters
Blended versus face-to-face: comparing student performance in a therapeutics class
Therapeutics is a very complex subject for every pharmacy student, since it requires the application of knowledge from several other disciplines. The study of therapeutics is often done in case-based learning in order to promote reflective thinking and give a scenario as real as possible. The objective of this study was to compare student performance between faceto-face (n = 54) and blended learning (n = 56) approaches to the teaching of therapeutics. They can confirm that there are statistically significant differences (p < 0.05) between the final exam scores from both groups, being that the b learning group achieved higher scores. Blended learning seems to be an effective way to teach therapeutics, following pre established teaching methods, and above all, does not negatively affect student performance. It also provides new learning environments and strategies, and promotes the development of new skills such as learning and collaborating online, which may be relevant in a networked knowledge society.info:eu-repo/semantics/publishedVersio
Measurement of the Lambda(b) cross section and the anti-Lambda(b) to Lambda(b) ratio with Lambda(b) to J/Psi Lambda decays in pp collisions at sqrt(s) = 7 TeV
The Lambda(b) differential production cross section and the cross section
ratio anti-Lambda(b)/Lambda(b) are measured as functions of transverse momentum
pt(Lambda(b)) and rapidity abs(y(Lambda(b))) in pp collisions at sqrt(s) = 7
TeV using data collected by the CMS experiment at the LHC. The measurements are
based on Lambda(b) decays reconstructed in the exclusive final state J/Psi
Lambda, with the subsequent decays J/Psi to an opposite-sign muon pair and
Lambda to proton pion, using a data sample corresponding to an integrated
luminosity of 1.9 inverse femtobarns. The product of the cross section times
the branching ratio for Lambda(b) to J/Psi Lambda versus pt(Lambda(b)) falls
faster than that of b mesons. The measured value of the cross section times the
branching ratio for pt(Lambda(b)) > 10 GeV and abs(y(Lambda(b))) < 2.0 is 1.06
+/- 0.06 +/- 0.12 nb, and the integrated cross section ratio for
anti-Lambda(b)/Lambda(b) is 1.02 +/- 0.07 +/- 0.09, where the uncertainties are
statistical and systematic, respectively.Comment: Submitted to Physics Letters
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