51 research outputs found
A REPLACEMENT BASED ASSOCIATION SYSTEM TO REDUCE DOWNLOAD TIME AND POWER CONSUMPTION
The easy method may be to attach the complete routing path in each packet. The problem is that overhead can be great for packets with long routing paths. Using the routing path for each packet, many measurement and diagnostic methods can make effective management and protocol improvements in the WSN format, which consists of a large number of invisible sensor nodes. Path offers a new way to break the light to see if there are recovered tracks. To further improve inference capability and effective implementation, the path provides a quick format to begin rebuilding the first set of tracks. To be effective and effective, two types of problems must be addressed. The HASH function must be light and efficient enough, since it must operate on sensors with limited resources. Using the routing path for each packet, many measurement and diagnostic methods can make effective management and protocol improvements in the WSN format, which consists of a large number of invisible sensor nodes. We implemented the trail and evaluated its performance using large-scale WSN applications as well as comprehensive simulations. The results reveal that the band achieves much higher refresh rates in different network configurations compared to other modern methods. Compared to Path Zip, the path uses a great similarity between several fast inference packages, resulting in much better development
Treatment challenges in an atypical presentation of tubulointerstitial nephritis and uveitis (TINU)
Purpose: To describe an atypical presentation of Tubulointerstitial Nephritis and Uveitis (TINU), with challenges in treatment course. Observations: A 12-year-old Hispanic female presented to the National Eye Institute\u27s Uveitis clinic with bilateral blurred vision, red eyes and photophobia, not responsive to topical steroids. On exam, she had bilateral severe panuveitis with areas of subretinal fluid. During her evaluation, she was noted to have elevated serum creatinine. A kidney biopsy confirmed the presence of severe tubulointerstitial nephritis and interstitial fibrosis. She was treated with oral steroids with excellent resolution of symptoms and subretinal fluid. She continued to have anterior segment flares with attempts to taper oral prednisone which lead to treatment with multiple immunomodulatory agents. Associated hypertension and kidney damage complicated the choice of a secondary immunosuppressive agent. Conclusions and Importance: Although rare, TINU can present as panuveitis with choroidal involvement which may or may not be preceded by tubulointerstitial nephritis. A renal biopsy is required for definitive diagnosis, but abnormal urinalysis or renal function should raise suspicion for TINU. © 201
High gain, low noise 1550  nm GaAsSb/AlGaAsSb avalanche photodiodes
High sensitivity avalanche photodiodes (APDs) operating at eye-safe
infrared wavelengths (1400–1650 nm) are essential
components in many communications and sensing systems. We report the
demonstration of a room temperature, ultrahigh gain (
M
=
278
,
λ
=
1550
n
m
,
V
=
69.5
V
,
T
=
296
K
) linear mode APD on an InP substrate
using a
G
a
A
s
0.5
S
b
0.5
/
A
l
0.85
G
a
0.15
A
s
0.56
S
b
0.44
separate absorption, charge, and
multiplication (SACM) heterostructure. This represents
∼
10
×
gain improvement (
M
=
278
) over commercial, state-of-the-art
InGaAs/InP-based APDs (
M
∼
30
) operating at 1550Â nm. The
excess noise factor is extremely low (
F
<
3
) at
M
=
70
, which is even lower than Si APDs.
This design gives a quantum efficiency of 5935.3% at maximum gain.
This SACM APD also shows an extremely low temperature breakdown
sensitivity (
C
b
d
) of
∼
11.83
m
V
/
K
, which is
∼
10
×
lower than equivalent InGaAs/InP
commercial APDs. These major improvements in APD performance are
likely to lead to their wide adoption in many photon-starved
applications.</jats:p
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Effect of Desiccating Environmental Stress Versus Systemic Muscarinic AChR Blockade on Dry Eye Immunopathogenesis
Purpose.
A majority of experimental data on dry eye disease (DED) immunopathogenesis have been derived from a murine model of DED that combines desiccating environmental stress with systemic muscarinic acetylcholine receptor (mAChR) inhibition. However, to our knowledge the effects of pharmacologic mAChR blockade on the pathogenesis of experimental DED have not been evaluated systemically. The purpose of our study was to investigate the differential effects of desiccating environmental stress and mAChR inhibition on the pathogenesis of DED.
Methods.
DED was induced in female C57BL/6 mice by exposure to a desiccating environment in the controlled-environment chamber or to systemic scopolamine, or by performing extraorbital lacrimal gland excision. Clinical disease was assessed using corneal fluorescein staining (CFS) and the cotton thread test (CTT). Corneal CD11b+ and conjunctival CD3+ T-cell infiltration were evaluated by flow cytometry. T-cells from draining cervical lymph nodes (CLN) and distant inguinal lymph nodes (ILN) were analyzed for Th1, Th2, Th17, and Treg responses by flow cytometry and ELISA.
Results.
Desiccating environmental stress and systemic mAChR blockade induced similar clinical signs of DED. However, desiccating environmental stress imparted higher conjunctival CD3+ T-cell infiltration, and greater Th17-cell activity and Treg dysfunction than mAChR blockade, while mAChR blockade decreased tear secretion to a greater extent than desiccating environmental stress. Systemic mAChR blockade attenuated Th17 activity and enhanced Th2 and Treg responses without affecting Th1 activity.
Conclusions.
In vivo inhibition of mAChRs variably affects CD4+ T-cell subsets, and desiccating environmental stress and systemic mAChR blockade induce DED through different primary pathogenic mechanisms
Determination of monolayer-protected gold nanoparticle ligand–shell morphology using NMR
It is accepted that the ligand shell morphology of nanoparticles coated with a monolayer of molecules can be partly responsible for important properties such as cell membrane penetration and wetting. When binary mixtures of molecules coat a nanoparticle, they can arrange randomly or separate into domains, for example, forming Janus, patchy or striped particles. To date, there is no straightforward method for the determination of such structures. Here we show that a combination of one-dimensional and two-dimensional NMR can be used to determine the ligand shell structure of a series of particles covered with aliphatic and aromatic ligands of varying composition. This approach is a powerful way to determine the ligand shell structure of patchy particles; it has the limitation of needing a whole series of compositions and ligands' combinations with NMR peaks well separated and whose shifts due to the surrounding environment can be large enough
Agarose Spot as a Comparative Method for in situ Analysis of Simultaneous Chemotactic Responses to Multiple Chemokines
yesWe describe a novel protocol to quantitatively and simultaneously compare the chemotactic responses of cells towards different chemokines. In this protocol, droplets of agarose gel containing different chemokines are applied onto the surface of a Petri dish, and then immersed under culture medium in which cells are suspended. As chemokine molecules diffuse away from the spot, a transient chemoattractant gradient is established across the spots. Cells expressing the corresponding cognate chemokine receptors migrate against this gradient by crawling under the agarose spots towards their centre. We show that this migration is chemokine-specific; meaning that only cells that express the cognate chemokine cell surface receptor, migrate under the spot containing its corresponding chemokine ligand. Furthermore, we show that migration under the agarose spot can be modulated by selective small molecule antagonists present in the cell culture medium
Biomarkers for the management of pre-eclampsia in pregnant women
Pre-eclampsia (PE) is a pregnancy related disorder characterized by hypertension and proteinuria noticeable after 20 wk of gestation. It is a leading cause of maternal and foetal mortality and morbidity worldwide. The aetiology of the disease is unknown, but recent studies have revealed that this disorder appears to originate in placenta and is characterized by widespread maternal endothelial dysfunction. Till date, delivery of placenta is the only cure for the disease. So, there is a need for the identification of highly specific and sensitive biochemical markers that would allow early identification of patients at risk and thus help in providing proper prenatal care. Several promising biomarkers have been proposed, alone or in combination, that may help in predicting women who are likely to develop PE. Maternal serum concentrations of these biomarkers either increase or decrease in PE during gestation. This review focuses on the various biomarkers available and their utility in predicting pre-eclampsia
Security Framework Connection Assistance for IoT Device Secure Data communication
Today, Internet of Things (IoT) services has been increasing extensively because of their optimum device sizes and their developed network infrastructure that includes devices based on internet embedded with various sensors, actuators, communication, and storage components providing connection and data exchange. Presently number of industries use vast number of IoT devices, there are some challenges like reducing the risks and threats that exposure, accommodating the huge number of IoT devices in network and providing secure vulnerabilities have risen. Supervised learning has recently been gaining popularity to provide device classification. But this supervised learning became unrealistic as producing millions of new IoT devices each year, and insufficient training data. In this paper, security framework connection assistance for IoT device secured data communication is proposed. A multi-level security support architecture which combines clustering technique with deep neural networks for designing the resource oriented IoT devices with high security and these are enabling both the seen and unseen device classification. The datasets dimensions are reduced by considering the technique as auto encoder. Therefore in between accuracy and overhead classification good balancing is established. The comparative results are describes that proposed security system is better than remaining existing systems
T1322 Colectomy Rates for Patients Treated for CMV Disease in the Context of Ulcerative Colitis do Not Differ From Those Who are Not Treated for CMV Disease
Bilateral Exudative Retinal Detachments and Panuveitis in a Patient with Multiple Myeloma
PURPOSE: To report a case of bilateral exudative retinal detachments and panuveitis in a patient with multiple myeloma (MM). CASE REPORT: A 54-year-old patient with non-proliferative diabetic retinopathy was referred with blurred vision and scotomas in both eyes (OU). Three months prior to the onset of ocular symptoms, he was diagnosed with systemic MM and was receiving chemotherapy. Clinical examination revealed best-corrected visual acuities of 20/80 OU, rare anterior chamber cell, 2+ vitreous cell, diffuse intraretinal hemorrhages, and exudative retinal detachments (RD). Optical coherence tomography of the macula showed central subretinal fluid with cystic intraretinal fluid OU. The findings were consistent with panuveitis and exudative RD in the setting of MM. He reported symptomatic improvement after plasmapheresis and oral prednisone initiation. CONCLUSION: Extensive, bilateral exudative RD and panuveitis are rare but potentially sight-threatening findings in patients with MM
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