83 research outputs found
Adaptive neural network control of coordinated manipulators
Proceedings of the IEEE Conference on Decision and Control1963-964PCDC
Robust adaptive control of uncertain nonholonomic systems using domination design
Proceedings of the SICE Annual Conference2472-2477PSIA
Invasive pulmonary fungal infections in patients with connective tissue disease: a retrospective study from northern China
Invasive pulmonary fungal infection (IPFI) is a potentially fatal complication in patients with connective tissue disease (CTD). The current study aimed to uncover the clinical characteristics and risk factors of patients with IPFI-CTD. The files of 2186 CTD patients admitted to a single center in northern China between January 2011 and December 2013 were retrospectively reviewed. A total of 47 CTD patients with IPFI were enrolled into this study and assigned to the CTD-IPFI group, while 47 uninfected CTD patients were assigned to the control group. Clinical manifestations were recorded, and risk factors of IPFI were calculated by stepwise logistical regression analysis. Forty-seven (2.15%) CTD patients developed IPFI. Systemic lupus erythematosus patients were responsible for the highest proportion (36.17%) of cases with IPFI. Candida albicans (72.3%) accounted for the most common fungal species. CTD-IPFI patients had significantly elevated white blood cell count, erythrocyte sedimentation rate, C-reactive protein and fasting glucose values compared to controls (P<0.05). Cough, sputum and blood in phlegm were the most common symptoms. Risk factors of IPFI in CTD included maximum prednisone dose ≥30 mg/day within 3 months prior to infection, anti-microbial drug therapy, and interstitial pneumonia. CTD patients who have underlying interstitial pneumonia, prior prednisone or multiple antibiotics, were more likely to develop IPFI
Invasive pulmonary fungal infections in patients with connective tissue disease: a retrospective study from northern China
Invasive pulmonary fungal infection (IPFI) is a potentially fatal complication in patients with connective tissue disease (CTD). The current study aimed to uncover the clinical characteristics and risk factors of patients with IPFI-CTD. The files of 2186 CTD patients admitted to a single center in northern China between January 2011 and December 2013 were retrospectively reviewed. A total of 47 CTD patients with IPFI were enrolled into this study and assigned to the CTD-IPFI group, while 47 uninfected CTD patients were assigned to the control group. Clinical manifestations were recorded, and risk factors of IPFI were calculated by stepwise logistical regression analysis. Forty-seven (2.15%) CTD patients developed IPFI. Systemic lupus erythematosus patients were responsible for the highest proportion (36.17%) of cases with IPFI. Candida albicans (72.3%) accounted for the most common fungal species. CTD-IPFI patients had significantly elevated white blood cell count, erythrocyte sedimentation rate, C-reactive protein and fasting glucose values compared to controls (P<0.05). Cough, sputum and blood in phlegm were the most common symptoms. Risk factors of IPFI in CTD included maximum prednisone dose ≥30 mg/day within 3 months prior to infection, anti-microbial drug therapy, and interstitial pneumonia. CTD patients who have underlying interstitial pneumonia, prior prednisone or multiple antibiotics, were more likely to develop IPFI
Optical power limiting with solutions of hexagonal prism cage shaped transition-metal cluster Mo2Ag4S8(PPh3)4
Journal of physical chemistry994817297-17301JPCH
An MEMS Optical Fiber Pressure Sensor Based on a Square Silicon Diaphragm: Numerical Simulation and Experimental Verification
Effect of inter-annual landscape changes on the interactions between cereal aphids and their natural enemies
The
agricultural
intensification
and
the
subsequent
habitat
changes
in
agroecosystem
can
strongly
affect
biological
control
services.
We
here
examine
the
influence
of
inter-annual
landscape
change
in
wheat
field
area
on
interactions
of
cereal
aphids
and
their
natural
enemies,
as
well
as
the
efficacy
of
biological
control
using
data
collected
from
a
4-year
experiment
in
Northwest
China.
Two
hypotheses
were
tested.
(i)
Population
densities
decline
following
an
inter-annual
expansion
of
wheat
crop
proportion
cover
due
to
dilution
and
crowding
effects.
(ii)
Species
that
are
specialists
or
at
higher
trophic
levels
are
more
sensitive
to
bottom-
up
disturbance
by
inter-annual
change
in
percent
cover
of
wheat
crop.
Results
showed
the
population
densities
of
one
cereal
aphid
(
Macrosiphum
avenae
),
one
parasitic
wasp
(
Aphidius
avenae
),
two
specialist
predators
(ladybirds:
Hippodamia
variegata
and
H.
tredecimpunctata
)
and
one
hyperparasitic
wasp
(
Pachyneuron
aphidis
)
declined
following
the
expansion
of
wheat
crop
areas,
supporting
the
predictions
of
inter-annual
dilution
and
crowding
effects.
In
contrast,
the
populations
of
one
cereal
aphid
(
Schizaphis
graminum
),
one
parasitic
wasp
(
A.
gifuensis
),
two
generalist
predators
(spiders:
Pardosa
astrigera
;
carabid
beetles:
Chlaenius
pallipes
),
and
two
hyperparasitic
wasps
(
Asaphes
suspensus
,
and
Alloxysta
sp.)
did
not
respond
to
inter-annual
landscape
change.
The
two
hypotheses
were
partially
supported
but
with
noticeable
exceptions,
and
the
bio-control
efficiency
declined
with
the
increase
of
the
proportion
cover
of
wheat
field
in
agricultural
landscape.
Overall,
different
responses
of
cereal
aphids
and
their
natural
enemies
make
it
difficult
but
still
possible
to
optimize
inter-annual
landscape
change
for
enhancing
the
parasitism
rate
and
predator-prey
ratio
Effects of inter-annual landscape change on interactions between cereal aphids and their natural enemies
The agricultural intensification and the subsequent habitat changes in agroecosystem can strongly affect biological control
services. We here examine the influence of inter-annual landscape change in wheat field area on interactions of cereal aphids and
their natural enemies, as well as the efficacy of biological control using data collected from a 4-year experiment in Northwest China. Two hypotheses were tested. (i) Population densities decline following an inter-annual expansion of wheat crop proportion cover due to dilution and crowding effects. (ii) Species that are specialists or at higher trophic levels are more sensitive to bottom-up disturbance by inter-annual change in percent cover of wheat crop. Results showed the population densities of one cereal aphid (Macrosiphum avenae), one parasitic wasp (Aphidius avenae), two specialist predators (ladybirds: Hippodamia variegata and H. tredecimpunctata) and one hyperparasitic wasp (Pachyneuron aphidis) declined following the expansion of wheat crop
areas, supporting the predictions of inter-annual dilution and crowding effects. In contrast, the populations of one cereal aphid
(Schizaphis graminum), one parasitic wasp (A. gifuensis), two generalist predators (spiders: Pardosa astrigera; carabid beetles:
Chlaenius pallipes), and two hyperparasitic wasps (Asaphes suspensus, and Alloxysta sp.) did not respond to inter-annual landscape change. The two hypotheses were partially supported but with noticeable exceptions, and the bio-control efficiency declined with the increase of the proportion cover of wheat field in agricultural landscape. Overall, different responses of cereal
aphids and their natural enemies make it difficult but still possible to optimize inter-annual landscape change for enhancing the parasitism rate and predator-prey ratio
- …