Robust super-resolution for petite image sequences

This paper proposes a new, learning-based, two-step super-resolution (SR) algorithm well suited to solve the specially demanding problem of obtaining SR estimates from petite image sequences. The first step, devoted to increase the sampling rate of the incoming images, is performed by fitting linear combinations of functions generated from principal components (PC) to reproduce locally the sparse projected image data, and using these models to estimate image values at nodes of the high-resolution grid. PCs were obtained from local image patches sampled at sub-pixel level, which were generated in turn from a database of high-resolution images by application of a physically realistic observation model. Continuity between local image models is enforced by minimizing an adequate functional in the space of model coefficients. The second step, dealing with restoration, is performed by a linear filter with coefficients learned to restore residual interpolation artifacts in addition to low-resolution blurring, providing an effective coupling between both steps of the method. Results on a demanding five-image scanned sequence of graphics and text are presented, showing the excellent performance of the proposed method compared to several state-of-the-art two-step and Bayesian Maximum a Posteriori SR algorithms

Novel Image Segmentation through Agile Expanse Merging

This paper gives the explanation of novel image segmentation by agile expanse merging. Initially, the image is segmented into many expanses and the expanses of the same colour are continuously merged by the proposed algorithm. The proposed algorithm for expanse merging process will seek for homogeneity among the expanses and merges it iteratively by Sequential Probability Ratio Test (SPRT) and minimal cost condition. This merging algorithm combines the expanses in an orderly manner and stops the merging according to the criteria which is set by SPRT TEST. The merging done here goes on the agile programming technique. The final segmentation is done based on the studied or perceived image after merging process. This algorithm acquires the global standards especially the speed in which the merging is carried out by using Nearest Neighbor Graph Method (NNG)

POOL BOILING OF WATER OVER A STAINLESS STEEL FLAT PLATE HEATER

The purpose of this experiment is to study heat transfer characteristics of water through pool boiling over a flat stainless steel plate heater. The present experimental data of water is in good agreement with Stephen and Abdelsalam correlation (1980) with the given heat flux range 30-750 kW/m2. Without any modification in the Stephen and Abdelsalam correlation (1980), it is observed that the experimental data of water are within an error band of ± 20 percent, this is because of the Stephen and Abdelsalam correlation (1980) predicts their own data in an error band of 11.3 percent. In order to minimize the error band, the pool boiling experimental data of water have been analyzed by regression analysis using Stephen and Abdelsalam correlation (1980) and the powers and coefficient of the terms in the correlation are modified and the optimum values of the power index and coefficient which gives the minimum error band of ± 10 is obtained

Some New Congruences for l-Regular Partitions Modulo 13, 17, and 23

A partition of n is l-regular if none of its parts is divisible by l. Let b l (n) denote the number of l-regular partitions of n. In this paper, using theta function identities due to Ramanujan, we establish some new infinite families of congruences for b l (n) modulo l, where l = 17, 23, and for b 65 (n) modulo 13

A Study of the correlation between Potassium Dip and Severity of Acute Ischemic Stress in patients with Acute Coronary syndrome

BACKGROUND AND OBJECTIVES : Coronary artery disease is the important cause of mortality and morbidity in the world as well in India. Transient decrease in serum potassium during episode of acute coronary syndrome is thought to be a common finding, but so far there are not many studies demonstrating it occurrence in ACS and its significance. Delta potassium defined as the difference between potassium during the time of discharge and on admission [k-k at the time of discharge- k at the time of admission] reflect potassium drop during acute coronary syndrome and it has been thought to be associated with the disease severity in patient with ACS. Apart from well-known factors influencing mortality and morbidity in patient with acute coronary syndrome like female sex, associated co morbid illness like diabetes mellitus [DM], Systemic hypertension [SHT], dyslipidaemia, age, smoking, alcoholism, delta potassium has also thought to be associated with disease severity and influence the course of the disease in patients with ACS. The present study is an attempt to study its prevalence and its significance in patient of acute coronary syndrome group. METHODS AND MATERIALS : Study Design: Cross Sectional Study. Study Group: Patients with acute coronary syndrome 1. STEMI, 2. UNSTABLE ANGINA, 3. NSTEMI. MATERIALS : Detailed history, Physical examination, ECG, 2D Echocardiography, Chest x-ray, Complete Haemogram, Rbs, Blood urea, Serum Creatinine, Serum potassium, cardiac enzyme CPK-MB, Urine Routine, Total Cholesterol, Triglyceride levels. Place of Study: Govt. Kilpauk medical college hospital Duration of Study: 6 months METHODOLOGY : 1. Potassium dip will be assessed by Δk-potassium at the time of discharge – potassium at the time of admission. 2. Severity of ACS assessed by a) Duration of hospital stay b) 2D echo c) Cardiac enzyme CPK-MB assay. Inclusion Criteria : All patients > 35 yrs of age admitted with 1st episode of acute coronary syndrome. Exclusion Criteria : 1. Previous history of CAD. 2. Patients with CKD. 3. Patients on potassium controlling agents like ACE inhibitors, diuretics etc. RESULTS : Among 65 patients with STEMI 47 had delta potassium value more than 0.5 which constitute 72%. In patients with NSTEMI 66% has significant delta potassium. But in UNSTABLE ANGINA group only 23% has delta potassium more than 0.5. Delta potassium has also shown to be positively correlated with duration of stay in hospital as shown below. 1. Patient who stayed for 5 or less- 19% has significant delta potassium. 2. In the patient who stayed for 5 to 7- 76% has delta potassium more than 0.5. 3. In patients who stayed for more than 7 days- 96% has significant delta k. The relationship between delta potassium and LV dysfunction also correlate positively. In 17 patients with normal only 2 has delta potassium more than 2. In patients with mild LV dysfunction 33% has significant delta potassium. But 92% of patients with moderate and 93% of patients with severe LV dysfunction has delta potassium more than 0.5. CONCLUSION : 1. Prevalence of potassium dip is common among patients with acute coronary syndrome. 2. Diabetic patients does not have significant delta potassium. 3. Low potassium value at the time of admission [less than 4] was not found to correlate with disease severity in this study. 4. Delta potassium was positively correlated with severity of ischemic stress in patients with ACS. 5. Age, sex, diabetes, SHT, dyslipidaemia, smoking and alcoholism do not have major impact on delta potassium

Formulation and Characterization of Floating Microspheres of Perindopril Erbumine

Oral ingestion has long been the most convenient and commonly employed route of drug delivery. Indeed, for controlled release systems the oral route of administration has received attention with respect to research on physiological and drug constraints as well as design and testing of product. This is because there is more flexibility in dosage form design for oral route than that of parenteral route. Drug delivery technologies are the formulation technologies that modify drug release profile, absorption, distribution and elimination for the benefit of improving product efficacy and safety. In-vitro data obtained for floating microspheres of perindopril erbumine showed good entrapment efficiency, good buoyancy and prolonged drug release. Microspheres of different size and drug content could be obtained by varying the formulation variables. From the results it can be concluded that the drug release from the floating microspheres matrix was controlled by the polymer proportion. Prepared formulation showed appropriate balance between buoyancy and drug release rate

In Silico, Synthesis and Mao-A Inhibitory Activity of Ketonic Mannich Bases of Isatin

The present studyestablishes that computational tools help in minimizing the tedious process in drug discovery. Molinspiration was utilized for filtering the compounds and selecting the lead compounds. The binding energy obtained from docking study further confirmed the possibility of the affinity of the selected leads towards the enzyme MAO- A. Using the schemes various isatin derivatives were synthesized with good yield. Structure of the synthesized compounds were confirmed by Melting point, TLC, UV, IR, NMR and MASS spectra. Among the compounds screened for antidepressant activity CIS1 showed the highest activity. Thus, the present study depicts that the utilization of computer aided drug design is an effective tool in predicting the effectiveness of a series of isatin derivative compounds under study and thus can result in the design of potent antidepressant agents

An investigation on image denoising technique using pixel-component-analysis

This paper authenticates a proficient image denoising scheme with the analysis local pixel coherence. In the dominion of a study about noise and pixel elements in image processing, the influence of the Gaussian effect on image contrast plays a key role. It is found in particular that pixel variations may be vast in some cases which potentially tend to develop irregularities in the image

19-Ferrocenyl-18-oxa-8,16-diaza­penta­cyclo­[8.6.3.01,10.02,7.012,16]nona­deca-2(7),3,5-triene-9,17-dione

In the title compound, [Fe(C5H5)(C21H19N2O3)], both pyrrol­idine rings of the pyrrolizine substructure show an envelope conformation. In the ferrocenyl moiety, the unsubstituted cyclo­penta­dienyl ring is disordered over two orientations with site occupancies of 0.64 (2) and 0.36 (2). In the pyrrolizine ring, one C atom is disordered over two positions, with site occupancies of 0.71 (1) and 0.29 (1). Intra­molecular C—H⋯O inter­actions occur. The crystal packing is established through weak inter­molecular C—H⋯O and N—H⋯O inter­actions