114 research outputs found
Automatic segmentation of spinal cord diffusion MR Images for disease location finding
Get PDFDissemination weighted MR imaging may build the affectability and explicitness of MR imaging for certain pathologic states of the spinal rope yet is once in a while performed as a result of a few specialized issues. We consequently tried a novel stage explored turn reverberation dispersion weighted interleaved reverberation planar imaging arrangement in seven sound volunteers and six patients with intramedullary injuries. We performed dispersion weighted MR imaging of the spinal string with high spatial goals. Distinctive examples of dissemination irregularities saw in patient investigations bolster the conceivable symptomatic effect of dispersion weighted MR imaging for ailments of the spinal string. MR imaging has turned into the system of decision for imaging the spinal rope on account of a high affectability for pathologic intra medullary changes. In any case, the explicitness of anomalies oftentimes lingers behind when utilizing just regular MR arrangements. Dissemination weighted MR imaging guarantees to supply additional data in light of trademark changes of the clear dispersion coefficient, for example, those showed in intense ischemia, tumors, or sores related among numerous sclerosis. To date, the indicative commitment of dispersion weighted MR imaging has been concerted essentially in the cerebrum since dissemination weighted MR imaging of the spine is in detail every one the more requesting. Both the little size of the spinal rope and movement-initiated antiquities must be considered. We in this manner built up another examination strategy and tried its unwavering quality and potential for adding to the symptomatic workup of patients with spinal rope indications
Retraction notice to Gadolinium-free cardiac MR stress T1-mapping to distinguish epicardial from microvascular coronary disease: J Am Coll Cardiol 71 (2018) 957-968
Get PDFThis article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawl).
The JACC Journals Ethics Board has voted to retract this paper, relying on the findings of misconduct after an investigation by the University of Oxford (outlined below).The decision to retract the paper follows the conclusion of an investigation under the University of Oxford’s (“the University’s”) Code of Practice and Procedure on Academic Integrity in Research (“the Code”). The Registrar of the University convened a Panel under the Code. The Panel considered a number of issues, including in relation to this paper. The Panel concluded that the first author, Dr Alexander Liu, was responsible for misconduct in research. The Panel’s findings with regards to misconduct were limited to the actions of the first author. No other co-author was found to be involved in the misconduct. It is understood that the first author disagrees with the Panel’s findings. The first author has raised a complaint with the Office of the Independent Adjudicator for Higher Education (OIA) (The OIA reviews complaints from students about their higher education provider).
In relation to this paper, the Panel’s findings included that:
— certain data had been fabricated by the first author amending the actual study data so that the paper and the central illustration would show a compelling case that T1 mapping could distinguish between epicardial obstructive coronary artery disease and coronary microvascular dysfunction;
— the number of control subjects, their age, and the statistical test to calculate the significance of a difference between the patients in this paper were incorrect; and
— Figure 2 had been fabricated.
The Panel’s view was that this paper would likely need to be retracted from the literature as it had major irregularities and its conclusions were unsafe.
The following co-authors agree that a retraction is appropriate: Vanessa Ferreira, Rajesh Kharbanda, Stefan Neubauer, Stefan Piechnik, Keith Channon, John C. Forfar, Michael Jerosch-Herold, Andreas Greiser, Joanna Liu and Rohan Wijesurendra
Social Media: An Interactive Educational Tool for Better Understanding of Educational Concepts and Make Them More Memorable
Get PDFThe topic “Social media:An Interactive Educational Tool for better understanding of Educational concepts and make them more memorable.As social media sites continue to grow in popularity, it is our premise that technology is a vital part in today’s student success equation.“Social media: an innovative education tool†was undertaken to study the relevance and importance of social media which is an in-thing among the educational sector. In an era, where the global is the word to define common platform for the people around the world to share and exchange their beliefs, culture, traditions, knowledge, views, etc. The study concludes that our education system needs change and social media should be widely utilized for the educational purposes. It is mainly used for the purpose of making presentations followed by assignment updates, better research and connectivity.Now a day’s Social media is an ingrained part of today’s society. Our students are constantly on Instagram, Facebook, Twitter, and likely many sites we’re not hip enough to know about, So if you want to bring the “real world†into the classroom, consider integrating social media into your lessons.When used carefully, social media can be a useful tool rather than a distraction. A recent Edutopia blog post argues that using social media not only brings current technology to the classroom, but it also Helps Bridge the digital divide among lower-income students. Why should they be left behind as technology continues to march forward?Education-based sites such as Edmodo, Edublog, and Kidblog provide alternative social media sites for posting status updates and announcements, blogging, and micro blogging. But even the commercialized sites can be useful for demonstrating social media to students
Aldosterone and the Mineralocorticoid Receptor: Risk Factors for Cardiometabolic Disorders
No full textPreclinical studies have convincingly demonstrated a role for the mineralocorticoid receptor (MR) in adipose tissue physiology. These studies show that increased MR activation causes adipocyte dysfunction leading to decreased production of insulin-sensitizing products and increased production of inflammatory factors, creating an environment conducive to metabolic and cardiovascular disease. Accumulating data also suggest that MR activation may be an important link between obesity and metabolic syndrome. Moreover, MR activation may mediate the pathogenic consequences of metabolic syndrome. Recent attempts at reversing cardiometabolic damage in patients with type 2 diabetes using MR antagonists have shown promising results. MR antagonists are already used to treat heart failure where their use decreases mortality and morbidity over and above the use of traditional therapies alone. However, more data are needed to establish the benefits of MR antagonists in diabetes, obesity, and metabolic syndrome
Lateral Femoral Condyle CRATER sign of BRIK an Ancillary Sign of Lateral Patellar Dislocation
No full textIntroduction Acute lateral patellar dislocation is a common knee injury pattern. However, coincidental osseous defect may be present in normal knees. Purpose Evaluate the characteristics of osseous bone defect and describe a new ancillary sign associated with lateral patellar dislocation. Materials and Methods Magnetic resonance imaging (MRI) of 50 consecutive patients referred following a traumatic lateral patellar dislocation of the knee joint and 50 patients with knee pain without MR features of patellar dislocation were obtained for evaluation over a 7-year period. They were analyzed for location of bony defects in the periarticular region. Results Of the 50 patients who underwent MRI following a reduced traumatic lateral patellar dislocation, 3 patients had an osseous “crater” of more than 2 mm in depth on the non-articular surface of the lateral femoral condyle. None of control group of patients had an osseous defect measuring more than 2 mm in depth. Conclusion This associated finding of an osseous “crater” of more than 2 mm on the non-articular surface of the lateral femoral condyle following traumatic lateral patellar dislocation is a rare occurrence. We highlight this as an ancillary sign of lateral patellar dislocation necessitating careful evaluation (Crater sign of Bhamidipaty Rajesh Iyengar Kartik [BRIK]). The presence of lateral femoral condyle “CRATER” sign of BRIK on MRI undertaken for other reasons in the knee, in the absence of osseous edema may suggest a past episode of severe, reduced patellar dislocation
Effective Morphological Transformation and Sub-pixel Classification of Clustered Images
Get PDFThe main aim of this research work is to perform the morphological operations with reduced time complexity and area complexity. Morphological operation is the key element in any image processing. Finding the maximum and minimum using a window of defined size will imply to the morphological dilation and erosion respectively. So the proposed algorithm should be fast in the comparison and sorting, this way the time complexity could be reduced. It’s believed that the anchor concept will fetch this cause. The idea behind this is it fixes a pixel and setting it as the center pixel all the surrounding pixels will be processed. Moreover this is now been implemented for rectangular structuring element. This paper attempts the same for flat and 3D structuring elements. Hyper-spectral Imaging is a developing zone of remote detecting applications. Hyper-spectral pictures incorporate more extravagant and better otherworldly data than the multi-spectral pictures got previously. Hyper-otherworldly pictures are described by an exchange off between the unearthly and spatial resolution. The principle issue of the hyper-ghostly information is the generally low spatial goal. For arrangement, the serious issue brought about by low spatial goal is the blended pixels. Blended pixels alluded to the pixels which are involved by more than one land spread class. In the proposed procedure another strategy is utilized to address the issue of blended pixels and to get a better spatial goal of the land spread characterization maps. The strategy misuses the upsides of both picture bunching methods and phantom dimming calculations, so as to decide the fragmentary plenitudes of the classes at a sub-pixel scale. Spatial regularization by Flank planning method is at last performed to spatially find the got classes at sub-pixel level
Investigation on Strength Durability and Crack Healing Efficiency of Natural Fiber Reinforced Bacterial Concrete under Various Exposures
Get PDFConcrete is the most broadly utilized construction material due to its availability and cost. It is more susceptible to cracks, allowing chemical substances and water to enter and deteriorate the materials over time, as well as affecting the durability properties of structures. In recent years, the use of bacteria and natural fibers in concrete has not only reduced cracks but also enhanced its strength and durability.
Microbial-induced carbonate precipitation (MICP) is highly acceptable in concrete to improve rheological and crack repair properties. In the current research isolated five bacteria from various locations and subjected to basic tests such as urease enzyme activity, CaCO3 production, and pH growth. The bacteria Bacillus paramycoides was isolated from concrete efflorescence and showed good results in basic tests. It was used in concrete with hybrid combinations of coir, flax, and jute, and the results were studied. The bacteria (self-healing agent) was added to natural fiber reinforced concrete using direct addition (DA) and immobilization (IM) techniques.
Compared to control and DA, IM rendered improved values in strength, durability and crack healing properties. The strength results of IM specimens showed improved compressive strength by 25.95%, compressive strength regain by 61.45%, split tensile strength by 45.65%, flexural strength by 28% and impact strength by 444.92%.
The IM samples under durability tests, showed 85.41% reduction in sorptivity, 2% strength loss in chloride exposures, and 2% strength loss in sulphate exposure. The average rate of crack healing (internal and external) for pre-cracked cube samples (crack range - 0.3 to 1.2 mm) after 28 days of full-wet curing, wet-dry curing, normal soil curing, and marine soil curing was 87.85%, 96.18%, 79.86%, and 49.66%, respectively. The corrosion level of reinforced steel bars under chloride curing was assessed, using gravimetric analysis.
At 270 days, the corrosion level of embedded bars from bacterial samples (DA and IM) showed a range of 0.07–0.23%. The microstructure study was carried using Scanning electron microscopy (SEM), X-ray diffractometers (XRD), and Energy dispersive spectroscopy (EDS). It was concluded that the presence of aragonite, calcite and vaterite (polymorphs of CaCO3) in bacterial samples is due to the biological activity of Bacillus paramycoides with a natural fiber-reinforced cementitious system
Male-mediated dominant lethal mutations in mice following prooxidant treatment
No full textThis study’s primary aim is to examine if prooxidant treatment has the propensity to induce dominant lethal DL type mutations in a randomly bred closed colony of CFT-Swiss mice. Initially, graded doses of both organic hydroperoxides viz.,t-butyl hydroperoxide tbHP , and cumene hydroperoxide cHP were administered i.p. to adult males and the mortality data was analysed to determine the LD values. cHP was relatively more toxic compared to tbHP. The computed LD50 values were 1500 and 3000 mmol kg body weight for cHP and tbHP, respectively. Subsequently, adult males were administered with LD doses of hydroperoxide HP tbHP — 30 mmol 100 g body weight and cHP — 15 50 mmol 100 g body weight on 5 consecutive days and were mated with virgin females for a period of 5 weeks to characterise the male-mediated DL mutations. Male-based analysis of the three major variables viz., implantations, live embryos and dead implants DI were carried out to assess the DL-type response induction. While tbHP induced significant
increases 2- to 5-fold in the incidence of DI during the first 4 weeks, cHP induced a marginal increase only during the first week. These results suggest that prooxidants induce DL-type effect only in specific post-meiotic stages of spermatogenesis and stress the need to further investigate the implications of chronic oxidative stress on the male reproductive system
International Journal on Recent and Innovation Trends in Computing and Communication Vector Based Routing Through Dual Sink in Wireless Sensor Network
No full textAbstract-Wireless sensor network is emerging as powerful technique, there are many protocols are discovered for wireless sensor network. While process of transmitting the data consumes energy of each node so energy consumption is one of the important corner in wirele ss sensor network .dual sink vector based forwarding(DS-VBF) takes both remaining energy and location information as regarded factor to discover an optimized path to save energy in network. The modified routing protocol place dual sink in to the network which improves the network life time. according to the deployment of dual sink packet delivery ratio and end to end delay are enhanced .the simulation result in comparing with VBF end to end delay are reduced more than 80%,remaing energy increased 10% increment of packet reception ratio was about 70%
Vector Based Routing Through Dual Sink in Wireless Sensor Network
Get PDFWireless sensor network is emerging as powerful technique, There are many protocols are discovered for wireless sensor network. While process of transmitting the data consumes energy of each node so energy consumption is one of the important corner in wireless sensor network .dual sink vector based forwarding(DS-VBF) takes both remaining energy and location information as regarded factor to discover an optimized path to save energy in network. The modified routing protocol place dual sink in to the network which improves the network life time. according to the deployment of dual sink packet delivery ratio and end to end delay are enhanced .the simulation result in comparing with VBF end to end delay are reduced more than 80%,remaing energy increased 10% increment of packet reception ratio was about 70%.
DOI: 10.17762/ijritcc2321-8169.15027
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