1,416 research outputs found
Prevalence and Genotypes of Mycobacterium Avium Subspecies Paratuberculosis in Large Ruminants of Eastern Uttar Pradesh, North India
Uttar Pradesh is the fourth largest, most populous and leading milk and meat producing state in India. Despite the huge livestock population, information on the status of paratuberculosis homogeneity and heterogeneity of Mycobacterium avium subspecies paratuberculosis (MAP) isolates of eastern Uttar Pradesh is non-existent. Present study was aimed to estimate the presence of MAP in large ruminants (Cattle and Buffaloes) of eastern Uttar Pradesh. A total 108 fecal samples were collected from farmer's herds of large ruminants (cattle and buffaloes) from different geographical regions (Chandauli, Mughalsarai, Gazipur, and Naugarh) of eastern Uttar Pradesh and screened for the presence of MAP infection using microscopic examination, direct IS900 PCR and culture on Herrold egg yolk (HEY) medium. The isolates recovered on HEY medium were subjected to molecular identification and genotyping using IS900 PCR and IS1311 PCR-REA method, respectively. Of the 108 fecal samples, 25 (23.14%) and 11 (10.18%) samples were positive for the presence of acid-fast bacilli and growth on HEY medium, respectively. Species-wise, 17.5, 7.5% and 26.5, 11.7% fecal samples from cattle and buffaloes were found positive for the presence of acid-fast bacilli and growth on HEY medium, respectively. Isolates recovered on HEY medium with mycobactin J were positive for IS900 sequence and genotyped as Bison Type using IS1311 PCR-REA method. Present study is the first report on the presence of MAP infection and ‘Bison Type' genotype of MAP in eastern Uttar Pradesh. These findings will be useful for the intervention of effective control measures in order to reduce the prevalence of MAP infection in domestic livestock species and prevent its spread to the human population in the regions
Further analysis of Multivariate fractal functions
The aim of this paper is to characterize a fractal operator associated with
multivariate fractal interpolation functions (FIFs) and study the several
properties of this fractal operator. Further, with the help of this operator,
we characterize a latest category of functions and study their approximation
aspects. The basic characteristics of this multivariate fractal operator's are
given in several ways in this note. The extension of this fractal operator to
the -spaces for are also examined. Multivariate continuous
fractal functions approximation characteristics are also examined.Comment: 05. arXiv admin note: substantial text overlap with arXiv:1810.09701
by other author
Active Segregation Dynamics in the Living Cell
In this paper, we bring together our efforts in identifying and understanding
nonequilibrium phase segregation driven by active processes in the living cell,
with special focus on the segregation of cell membrane components driven by
active contractile stresses arising from cortical actomyosin. This also has
implications for active segregation dynamics in membraneless regions within the
cytoplasm and nucleus (3d). We formulate an active version of the Flory-Huggins
theory that incorporates a contribution from fluctuating active stresses. Apart
from knitting together some of our past theoretical work in a comprehensive
narrative, we highlight some new results, and establish a correspondence with
recent studies on Active Model B/B+. We point to the many unusual aspects of
the dynamics of active phase segregation, such as (i) anomalous growth
dynamics, (ii) coarsening accompanied by propulsion and coalescence of domains
that exhibit nonreciprocal effects, (iii) segregation into mesoscale domains,
(iv) emergence of a nonequilibrium phase segregated steady state characterised
by strong macroscopic fluctuations (fluctuation dominated phase ordering
(FDPO)), and (v) mesoscale segregation even above the equilibrium Tc. Apart
from its implications for actively driven segregation of binary fluids, these
ideas are at the heart of an Active Emulsion description of the lateral
organisation of molecules on the plasma membrane of living cells, whose full
molecular elaboration appears elsewhere
Exploring Intrusion Detection Systems (IDS) in IoT Environments
Introduction; The Internet of Things (IoT) has revolutionized numerous sectors, such as home automation, healthcare, and industrial operations, by enabling interconnected devices to facilitate automation, real-time data analysis, and intelligent decision-making. Despite its transformative potential, the rapid proliferation of IoT has introduced critical cybersecurity challenges due to the heterogeneous and fragmented nature of IoT environments. Objective; IoT networks consist of diverse devices with varying capabilities and protocols, making the implementation of standardized security measures complex. Method; Traditional approaches, including encryption, authentication, and access control, often fall short in addressing evolving cyber threats. Intrusion Detection Systems (IDS) tailored to IoT offer a promising solution, enabling real-time monitoring, anomaly detection, and attack prevention. Result: However, the resource constraints of IoT devices and diverse architectures pose significant design challenges for IDS. Future advancements should focus on lightweight, adaptive IDS models leveraging machine learning, artificial intelligence, and blockchain technologies to enhance security frameworks. Collaboration among researchers, industry, and policymakers is essential to develop scalable solutions, ensuring IoT ecosystems remain secure and efficient in combating cyber threats. Conclusions; This paper reviews IoT security fundamentals, evaluates IDS solutions, and highlights key challenges, offering directions for future research to improve IoT cybersecurity through innovative strategies
Exploiting Multilingualism in Low-resource Neural Machine Translation via Adversarial Learning
Generative Adversarial Networks (GAN) offer a promising approach for Neural
Machine Translation (NMT). However, feeding multiple morphologically languages
into a single model during training reduces the NMT's performance. In GAN,
similar to bilingual models, multilingual NMT only considers one reference
translation for each sentence during model training. This single reference
translation limits the GAN model from learning sufficient information about the
source sentence representation. Thus, in this article, we propose Denoising
Adversarial Auto-encoder-based Sentence Interpolation (DAASI) approach to
perform sentence interpolation by learning the intermediate latent
representation of the source and target sentences of multilingual language
pairs. Apart from latent representation, we also use the Wasserstein-GAN
approach for the multilingual NMT model by incorporating the model generated
sentences of multiple languages for reward computation. This computed reward
optimizes the performance of the GAN-based multilingual model in an effective
manner. We demonstrate the experiments on low-resource language pairs and find
that our approach outperforms the existing state-of-the-art approaches for
multilingual NMT with a performance gain of up to 4 BLEU points. Moreover, we
use our trained model on zero-shot language pairs under an unsupervised
scenario and show the robustness of the proposed approach.Comment: 10 pages, 4 figure
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Real-Time Increased Detection of Neoplastic Tissue in Barrett’s Esophagus with Probe-Based Confocal Laser Endomicroscopy: Final Results of an International Multicenter, Prospective, Randomized, Controlled Trial
BACKGROUND: Probe-based confocal laser endomicroscopy (pCLE) allows real-time detection of neoplastic Barrett's esophagus (BE) tissue. However, the accuracy of pCLE in real time has not yet been extensively evaluated. OBJECTIVE: To compare the sensitivity and specificity of pCLE in addition to high-definition white-light endoscopy (HD-WLE) with HD-WLE alone for the detection of high-grade dysplasia (HGD) and early carcinoma (EC) in BE. DESIGN: International, prospective, multicenter, randomized, controlled trial. SETTING: Five tertiary referral centers. PATIENTS: A total of 101 consecutive BE patients presenting for surveillance or endoscopic treatment of HGD/EC. INTERVENTIONS: All patients were examined by HD-WLE, narrow-band imaging (NBI), and pCLE, and the findings were recorded before biopsy samples were obtained. The order of HD-WLE and NBI was randomized and performed by 2 independent, blinded endoscopists. All suspicious lesions on HD-WLE or NBI and 4-quadrant random locations were documented. These locations were examined by pCLE, and a presumptive diagnosis of benign or neoplastic (HGD/EC) tissue was made in real time. Finally, biopsies were taken from all locations and were reviewed by a central pathologist, blinded to endoscopic and pCLE data. MAIN OUTCOME MEASUREMENTS: Diagnostic characteristics of pCLE. RESULTS: The sensitivity and specificity for HD-WLE were 34.2% and 92.7%, respectively, compared with 68.3% and 87.8%, respectively, for HD-WLE or pCLE (P = .002 and P < .001, respectively). The sensitivity and specificity for HD-WLE or NBI were 45.0% and 88.2%, respectively, compared with 75.8% and 84.2%, respectively, for HD-WLE, NBI, or pCLE (P = .01 and P = .02, respectively). Use of pCLE in conjunction with HD-WLE and NBI enabled the identification of 2 and 1 additional HGD/EC patients compared with HD-WLE and HD-WLE or NBI, respectively, resulting in detection of all HGD/EC patients, although not statistically significant. LIMITATIONS: Academic centers with enriched population. CONCLUSIONS: pCLE combined with HD-WLE significantly improved the ability to detect neoplasia in BE patients compared with HD-WLE. This may allow better informed decisions to be made for the management and subsequent treatment of BE patients. (Clinical trial registration number: NCT00795184.)
Experimental and FEM Analysis for Fracture Performance Evaluation of Concrete Made with Recycled Construction and Demolition Waste Aggregates
Paper presents experimental and Finite Element Method (FEM) analysis of fracture behavior of concrete made using Recycled Aggregate (RA). Concrete mixes were prepared using Construction and Demolition Waste (CDW) as replacement of natural coarse aggregates. To study fracture performance, concrete mixes were prepared with water to cementitious content (w/b) ratios between 0.4 and 0.5. Beam specimens of size 100 mm x 100 mm x 500 mm were cast and tested as per method of Three-point bend test on notched beam proposed by RILEM. Fracture parameters like fracture energy, stress intensity factor, energy release rate and characteristic length were evaluated using Load-CMOD (Crack Mouth Opening Displacement) and load deformation curves. Mechanical properties of concrete such as compressive and flexural strength, modulus of elasticity and split tensile strength were also evaluated. The performance of concrete using RA has been compared with concrete using Natural Aggregate (NA) from literature. Results suggest slightly better fracture performance in case of concrete made using RA in comparison to conventional concrete in spite of having similar strength and w/b ratio. Fracture energy parameter in terms of stress intensity factor obtained from FEM analysis were similar to experimental results wherein no significant variation in stress intensity factor for concrete mixes with recycled and natural aggregate were observed. However, it can be stated that values of stress intensity factor of 0.47_NA was lowest and 0.5_RA was highest. There was no significant difference in average fracture energy of mixes and it lies in range of 180 N/m to 300 N/m
Erythrophagocytosis and its relation to band 3 clustering in chronic myelogenous leukemia
Band 3, a major erythrocyte membrane glycoprotein, undergoes topographic redistribution leading to enhanced clustering, in chronic myelogenous leukemia (CML). This is probably due to the binding of heme compounds to the CML erythrocyte membrane resulting from depletion of cellular levels of reduced glutathione (GSH). Band 3 clustering appears to be one of the factors associated with increased erythrophagocytosis in CML
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