254 research outputs found
conformational redistribution of honey components following different storage conditions
The present study aims at the investigation of the changes in water distribution among the organic components of selected honey samples following honey storage at different temperatures. Results, achieved by application of fast field cycling NMR relaxometry, revealed that the organic constituents were homogeneously distributed within the whole samples stored at room temperature. Conversely, after four months of refrigeration at 4°C, the organic systems were included in persistent clusters, as a consequence of the water release due to the larger stability of the intramolecular interactions over the intermolecular ones. The new conformational arrangements of the honey constituents entailed enhancement of honey moisture content. For this reason, it can be suggested that honey refrigeration prior to storage at room temperature may be detrimental for its long-term storage. In fact, higher risk of fermentation may occur once the sample is warmed after the first refrigeration step
I International Conference on Research for Sustainable Development in Mountain Regions: book of abstracts
This book contains the abstracts of oral and poster presentations at the 1st International Conference on Research for Sustainable Development in Mountain Regions that took place in Bragança, Portugal, from October 5 to 7, 2016 as part of Mountains 201
Livro de resumos do Fórum CIMO - Ciência e Desenvolvimento 2012
Contém os resumos dos trabalhos apresentados no Fórum CIMO ‐ Ciência e Desenvolvimento 2012 do Centro de Investigação de Montanha.O
Centro
de
Investigação
de
Montanha
(CIMO)
foi
fundado
em
2002,
“Ano
Internacional
das
Montanhas”,
e
desde
2003
faz
parte
do
sistema
científico
e
tecnológico
nacional,
sendo,
como
tal,
financiado
pela
Fundação
para
a
Ciência
e
Tecnologia
(FCT).
O
CIMO
é
uma
estrutura
do
Instituto
Politécnico
de
Bragança,
sediada
na
sua
Escola
Superior
Agrária,
dela
fazendo
também
parte
investigadores
de
outras
instituições
de
ensino,
como
o
Instituto
Politécnico
de
Viana
do
Castelo,
a
Universidade
de
Trás-‐os-‐Montes
e
Alto
Douro
e
a
Universidade
da
Madeira.
É
uma
Unidade
de
Investigação
(UI)
multidisciplinar
na
área
das
ciências
agrárias
e
do
ambiente,
cuja
atividade
científica
tem
como
principal
objetivo
o
desenvolvimento
sustentável
das
regiões
de
montanha.
Está
organizado
em
três
grupos
de
investigação
multidisciplinares,
de
acordo
com
a
relevância
das
atividades
produtivas
e
condições
ambientais,
económicas
e
sociais
destas
zonas
ecológicas
de
montanha,
correspondendo
a
três
grandes
linhas
de
ação:
a)
“Serviços
Ecossistémicos
de
Áreas
Marginais
(MLES),
dirigido
para
as
atividades
em
áreas
marginais
onde
a
floresta,
os
matos
e
os
ecossistemas
naturais
ou
semi-‐naturais
dominam;
b)
“Sistemas
de
Agricultura
de
Montanha
(MFS)”
dirigido
para
as
atividades
produtivas
no
seio
das
explorações
agrícolas;
e
c)
“Tecnologia
e
Segurança
Alimentar
(FST)”,
vocacionado
para
a
tecnologia,
inovação
e
segurança
alimentar
dos
produtos
de
montanha.
Para
além
das
inerentes
atividades
de
investigação,
as
UI
e
os
seus
investigadores
têm
também
o
dever
de
divulgar
os
resultados
científicos
obtidos
junto
dos
potenciais
utilizadores
e
fomentar
a
sua
discussão
em
fóruns
alargados.
Durante
os
anos
de
atividade
do
Centro
foram
muitos
os
eventos
e
as
atividades
em
que,
setorialmente,
os
investigadores
do
CIMO
participaram.
Contudo,
achámos
que,
após
estes
anos
de
atividade,
e
face
à
abundância
e
relevância
dos
resultados
de
investigação
que
têm
sido
obtidos,
a
organização
de
um
evento
de
âmbito
alargado
com
a
participação
dos
utilizadores
finais
desses
resultados,
além
de
plenamente
justificada
é
extremamente
oportuna,
atendendo
à
conjuntura
nacional
e
à
fase
de
negociação
em
que
se
encontra
o
próximo
quadro
comunitário.
Assim,
a
concretização
do
“Fórum
CIMO
Ciência
e
Desenvolvimento
2012”
será
uma
oportunidade
para
atingir
este
desiderato.
A
participação
ativa
de
todos
os
intervenientes
neste
evento
conduzirá
a
frutuosas
discussões
e
a
conclusões
válidas
que
serão
tidas
em
atenção
na
atividade
científica
do
CIMO,
esperando
que,
de
igual
modo,
os
utilizadores
finais
dos
resultados
de
investigação
(Organizações
de
Agricultores,
Empresas,
outras
Organizações
e
Entidades
Governamentais)
se
revejam
e
beneficiem
desta
troca
de
experiências
e
saber.
É
este
o
objetivo
final
deste
evento
para
o
qual,
estamos
certos,
todos
contribuirão
e
para
o
qual
a
Comissão
Diretiva
do
CIMO
deseja
manifestar
desde
já
o
seu
agradecimento
à
participação
e
empenho
de
todos
Therapeutic Phlebotomy Related to Polycythemia Vera and Hemochromatosis
This study looks at therapeutic phlebotomy as first-line treatment of blood disorders, including polycythemia vera and hemochromatosis. Some professionals prefer alternative treatments to phlebotomy
Spacecraft VLBI and Doppler tracking: algorithms and implementation
We present the results of several multi-station Very Long Baseline
Interferometry (VLBI) experiments conducted with the ESA spacecraft Venus
Express as a target. To determine the true capabilities of VLBI tracking for
future planetary missions in the solar system, it is necessary to demonstrate
the accuracy of the method for existing operational spacecraft. We describe the
software pipeline for the processing of phase referencing near-field VLBI
observations and present results of the ESA Venus Express spacecraft observing
campaign conducted in 2010-2011. We show that a highly accurate determination
of spacecraft state-vectors is achievable with our method. The consistency of
the positions indicates that an internal rms accuracy of 0.1 mas has been
achieved. However, systematic effects produce offsets up to 1 mas, but can be
reduced by better modelling of the troposphere and ionosphere and closer
target-calibrator configurations.Comment: 10 pages, 10 figures. Astronomy and Astrophysics, accepte
The Biodiesel Project: A High School Multi-Discipline Class Collaboration and Graphic Imaging Technology Unit Plan
In this thesis project, my intention was to integrate diverse high school courses with poignant subject matter to increase the amount of learning students can achieve. This unit plan explored a Prince George High School (Virginia) multi-class cooperative effort involving biodiesel production. The project involved creating a biodiesel refinery built by Production Systems classes according to plans purchased from the Internet. The research for converting used kitchen oil into biodiesel and the titration of the fuel was conducted by Chemistry classes. Graphics Imaging Technology students created a logo, a poster, and designed brochures that described the processes and benefits of this product. Marketing classes conducted consumer surveys and devised a product distribution plan.Graphic Imaging Technology, a Career and Technical Education course, has long been linked to art education. For example, graphic design students incorporate art in many phases of their design projects. Specifically, during their preliminary creative thinking, students sketch thumbnails of possible design solutions and regularly use their drawn or painted illustrations in their printed pieces. Additionally, film photography, which is commonly viewed as a fine art, has been used by graphic design students for several years. This art form has been replaced by digital photography in many design studios and school classrooms, but the principles of balance and composition remain the same.Other teaching strategies such as interdisciplinary study have also been introduced into graphic design and art class curricula. The rise in cross-curricular studies is indicative of the importance of varying the classroom instruction to offer the most diverse learning environment to students. Math and English are most often combined with unrelated classes in multi-discipline education, but regrettably, science classes typically are not. Since few fields of endeavor do not incorporate other disciplines, a multi-discipline class collaboration and unit plan which included high school Production Systems, Chemistry, Graphic Imaging Technology, and Marketing classes was developed.This project sought to establish a working relationship among various high school classes while providing a mutual learning environment. Additionally, disciplines that do not ordinarily interact with each other had the chance to take part in an renewable energy project that inspired new ideas and developed an increased consciousness of the environment.Finally, as students were involved in all facets of this biodiesel project, they experienced a working environment similar to the real world . Establishing school-to-work programs that facilitate a smooth transition from high school to the work force is one of the main goals of the Prince George High School Career and Technical Education department. Students communicated their thoughts, worked together, and helped one another the same way as if they were employed at a business
Conformational Redistribution of Honey Components following Different Storage Conditions
The present study aims at the investigation of the changes in water distribution among the organic components of selected honey samples following honey storage at different temperatures. Results, achieved by application of fast field cycling NMR relaxometry, revealed that the organic constituents were homogeneously distributed within the whole samples stored at room temperature. Conversely, after four months of refrigeration at 4°C, the organic systems were included in persistent clusters, as a consequence of the water release due to the larger stability of the intramolecular interactions over the intermolecular ones. The new conformational arrangements of the honey constituents entailed enhancement of honey moisture content. For this reason, it can be suggested that honey refrigeration prior to storage at room temperature may be detrimental for its long-term storage. In fact, higher risk of fermentation may occur once the sample is warmed after the first refrigeration step
Applying Dynamic Performance Management to the Photovoltaic Sector: the Municipality of Palermo case study
Today, the even more compelling need to limit carbon dioxide emissions from energy generation – to address the ongoing global warming – implies the recourse to renewable energy sources (RESs). Indeed, these latter are able to meet energy demand into a more sustainable way. Considering the EU targets for the year 2020 in the matter of climate and energy, public organizations are expected to take an active role e.g. by adopting and promoting RESs. In Italy, over the last decade, among the various technologies based on RESs, solar PV technology witnessed a remarkable growth thanks to the support of a government incentive scheme, which ceased to be applied in 2013. Since then, the PV power installed in the Italian public sector has started slowing down, thus determining changes in clean energy production from PVs. Based on this, the research study aims at enhancing the design, adoption, and evaluation of public policies for PVs in order to foster the achievement of a sustainable development in terms of clean energy. To this end, a “Dynamic Performance Management” (DPM) approach – resulting from the combination of System Dynamic methodology with the traditional Performance Management (PM) systems – is suggested. The need for adopting such an approach comes from the limitations of the traditional PM systems, which are not able to deal with the dynamic complexity that characterizes the systems in which public decision-makers operate. The DPM approach is applied to a case study based on the PV sector of the Municipality of Palermo (Italy). Empirical evidences, emerging from the development of a simulation model, reveal how the design and application of a DPM approach to the PV sector may effectively support public decision-makers in outlining sustainable policies aimed at fostering clean energy production
Observations of Intrahour Variable Quasars: Scattering in our Galactic Neighbourhood
Interstellar scintillation (ISS) has been established as the cause of the
random variations seen at centimetre wavelengths in many compact radio sources
on timescales of a day or less. Observations of ISS can be used to probe
structure both in the ionized insterstellar medium of the Galaxy, and in the
extragalactic sources themselves, down to microarcsecond scales. A few quasars
have been found to show large amplitude scintillations on unusually rapid,
intrahour timescales. This has been shown to be due to weak scattering in very
local Galactic ``screens'', within a few tens of parsec of the Sun. The short
variability timescales allow detailed study of the scintillation properties in
relatively short observing periods with compact interferometric arrays. The
three best-studied ``intrahour variable'' quasars, PKS 0405-385, J1819+3845 and
PKS 1257-326, have been instrumental in establishing ISS as the principal cause
of intraday variability at centimetre wavelengths. Here we review the relevant
results from observations of these three sources.Comment: 10 pages, 4 figures, to appear in Astronomical and Astrophysical
Transaction
The Effect of Neuropriming and Focus of Attention on Amateur Standing Long Jump Performance
International Journal of Exercise Science 15(1): 1472-1480, 2022. Non-invasive brain stimulation has been prominent in recent neurophysiology research. The use of brain stimulation has not been examined in combination with the focus of attention paradigm, an established motor control tool. Therefore, the purpose of this study was to examine the effects of both brain stimulation and focus of attention on the outcome performance, peak force, lower extremity joint kinematics, and projection angle of a standing long jump. Forty-one participants were assigned to either the brain stimulation group or placebo group via a counterbalance design based on leg length and jump distance. Participants were only accepted if they had not previously trained in the standing long jump. On a second day, participants performed a standing long jump under control, external, and internal attentional foci after having undergone either a single session of brain stimulation or a placebo warm-up. Five total jumps were performed: one baseline jump followed by two for each attentional focus condition. The results indicated that an external focus of attention and control conditions created a reduced projection angle compared to an internal focus of attention and that brain stimulation did not have any effects on the performance of a standing long jump after a single session. There were no changes evident between hip, knee, and ankle joint angles, force production, or jump distance between any of the conditions or groups
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