Yahoo! Movies User Ratings and Descriptive Content Information, v.1.0

A fundamental aspect of rating based systems is the observation process; the process which users choose the movies they rate. Finding user to user similarity is a fundamental component for collaborative filtering. In user to user similarity ratings assigned by two users to a set of items are pairwise compared and averaged is called correlation. In this project I want to show user to user similarity adaptive i.e., we dynamically change the computation depending on the profiles of the compared users and the target movie whose prediction is sought. I evaluate the proposed theory with k-means clustering by grouping similar users which rated similar movies with same rating. i.e., whoever is having same will come under one group

Time to Defibrillation After Onset of Ventricular Fibrillation and Ventricular Tachycardia Cardiac Arrest at Thomas Jefferson University Hospital and Jefferson Hospital for Neurosciences.

Aims for Improvement Improve average time to defibrillation after VFib/pVTach cardiac arrest to \u3c 2 minutes within an 8 month interval at TJUH and JHN. Improve the percent of VFib/pVTach cardiac arrests that are defibrillated within the recommended 2 minute interval by 30% at TJUH/JHN within an 8 month interva

DEVELOPMENT AND VALIDATION OF RP-CHIRAL HPLC METHOD FOR QUANTIFICATION OF (S)-ISOMER IN TENOFOVIR DISOPROXIL FUMARATE

Objective: The main objective of present study was to develop and validate a reverse phase enantioselective chiral high performance liquid chromatographic method was developed for enantiomeric resolution of Tenofovir disoproxil fumarate; it decreases the HIV infection in human body. The method is specific, rapid, precise and accurate for the separation and determination of (S)-isomer in tenofovir disoproxil fumarate drug substance form.Methods: The S-Isomer of Tenofovir disoproxil fumarate was resolved on a Chiral AGP (150 × 4.0 mm, 5 µm) column (L-41) using a mobile phase system containing 0.1 M ammonium acetate in water pH 6.8 with ammonia solution and methanol in the ratio of (85:15 v/v). The mobile phase was set at a flow rate of 0.8 ml/min and the volume injected was 10μl for every injection. The detection wavelength was set at 260 nm and the column temperature was set at 15 °C.Results: The proposed method was productively applied for the quantitative determination of (S)-isomer in Tenofovir disoproxil fumarate drug substance form. The linear regression analysis data for calibration plots showed a good linear relationship over a concentration range of 0.125 to 3.75 µg/ml for (S)-isomer, 0.125-3.75 µg/ml for Tenofovir disoproxil fumarate. The mean values of the correlation coefficient were 0.999 and 0.999 for (S)-isomer and Tenofovir disoproxil fumarate. The method was validated as per the ICH guidelines. The detection limit (LOD) was about 0.05 µg/ml and quantitation limit (LOQ) was about 0.125 µg/ml for (S)-isomer and Tenofovir disoproxil fumarate. The relative standard deviation was found to be 0.78 % for (S)-isomer in Tenofovir disoproxil fumarate.Conclusion: The developed and validated HPLC method and the statistical analysis showed that the method is repeatable and selective for the estimation of the (S)-isomer of the Tenofovir disoproxil fumarate drug substance

ISOLATION, CHARACTERIZATION AND VALIDATION OF HPLC METHOD FOR QUANTIFICATION OF BIS-[10-(2-METHYL-4H-3-THIA-4,9-DIAZABENZO[F]AZULENE)]-1,4-PIPERAZINE IN AN ANTI-PSYCHOTIC DRUG SUBSTANCE, OLANZAPINE

Objective: The main objective of present study was to Isolate, characterize and validate a reverse phase high performance liquid chromatographic method was validated for quantification of bis-[10-(2-methyl-4H-3-thia-4,9-diazabenzo[f]azulene)]-1,4-piperazine in Olanzapine drug substance; it decreases the mental disorders in human body. The method is specific, rapid, precise and accurate for the separation and determination of bis-[10-(2-methyl-4H-3-thia-4,9-diazabenzo[f]azulene)]-1,4-piperazine in Olanzapine drug substance form.Methods: The bis-[10-(2-methyl-4H-3-thia-4,9-diazabenzo[f]azulene)]-1,4-piperazine of Olanzapine was resolved on a Zorbax RX-C 8, 250 mm X 4.6 mm, 5 micron column (L-1) using a mobile phase system containing 0.03 M sodium dodecyl sulphate in water pH 2.5 with 1 N sodium hydroxide solution and acetonitrile in the ratio of (Mobile phase A-52:48 v/v) and (Mobile phase B-buffer and Acetonitrile 30:70 v/v) by using the gradient program. The mobile phase was set at a flow rate of 1.5 ml/min and the volume injected was 20μl for every injection. The detection wavelength was set at 220 nm and the column temperature was set at 35 °C.Results: The proposed method was productively applied for the quantitative determination of bis-[10-(2-methyl-4H-3-thia-4,9-diazabenzo [f]azulene)]-1,4-piperazine in Olanzapine drug substance form. The linear regression analysis data for calibration plots showed a good linear relationship over a concentration range of 0.025to 0.903 µg/ml for bis-[10-(2-methyl-4H-3-thia-4,9-diazabenzo[f]azulene)]-1,4-piperazine, 0.081-0.608 µg/ml for Olanzapine. The mean values of the correlation coefficient were 0.999 and 0.999 for bis-[10-(2-methyl-4H-3-thia-4,9-diazabenzo[f]azulene)]-1,4-piperazine and Olanzapine. The method was validated as per the ICH guidelines. The detection limit (LOD) was about 0.007 µg/ml, 0.024 µg/ml and quantitation limit (LOQ) was about 0.024 µg/ml, 0.081 µg/ml for bis-[10-(2-methyl-4H-3-thia-4,9-diazabenzo[f]azulene)]-1,4-piperazine and Olanzapine. The relative standard deviation was found to be 1.64 % and 2.18 % for bis-[10-(2-methyl-4H-3-thia-4,9-diazabenzo[f]azulene)]-1,4-piperazine and Olanzapine.Conclusion: The validated HPLC method and the statistical analysis showed that the method is repeatable and selective for the estimation of the bis-[10-(2-methyl-4H-3-thia-4,9-diazabenzo[f]azulene)]-1,4-piperazine of the Olanzapine drug substance

Pericardial Effusion with Tamponade Physiology in a Patient with Multiple Myeloma

A 78-yeaer old African American female with a past medical history of IgA Kappa Multiple Myseloma was transfered to the Cardiovascular Intensive Care Unit (CVICU) at Thomas Jefferson University Hospital (TJUH) after being diagnosed with a pericardial effusion with tamponade physiology at an outside hospital

Outpatient Mineralocorticoid Receptor Antagonist Prescription Rate for Heart Failure

Aims for Improvement: Improve MRA prescription rate in the outpatient cardiology clinic by 25

Improving Time to Defibrillation at Thomas Jefferson University Hospital

Aims for Improvement Increase in timely defibrillation by 30% over 1 year Decrease in the amount of Vfib/VTach cardiac arrests that are not defibrillated to \u3c1% within a 1 year time fram

Evaluating the Efficacy of a Nursing-Driven versus Provider-Driven Heparin Protocol

At Thomas Jefferson University Hospital patients who require heparin infusions are monitored either by nursing alone or the resident and the nurse together. This project aims to determine: Which protocol more efficiently shortens the time to therapeutic? Are patients therapeutic longer under a certain protocol? Do more patients under either protocol suffer from bleeding complications

Procedural and Clinical Outcomes of Transitioning to High Power Short Duration Guided Ablation for Atrial Fibrillation

Introduction: High-power short-duration (HPSD; 50W for up to 15s) ablation is a novel way to use a contact force-sensing catheter optimized for power-controlled radiofrequency ablation of atrial fibrillation (AF). Our goal was to compare the procedural and clinical outcomes of AF ablation with HPSD to previous ablation methods used, including standard-power standard duration (SPSD; 20-25W, up to 60s) and temperature-controlled non-contact (TCNC; 20-40W, up to 60s). Methods: Procedural and clinical data was from consecutive cases of patients with paroxysmal or persistent AF undergoing pulmonary vein isolation with HPSD, TCNC and SPSD between 7/1/13 to 11/1/19. A total of 171 patients were studied (76 HPSD, 44 TCNC, 51 SPSD). Results: There was no difference in age, sex, or AF type between groups. Radiofrequency ablation time was shorter when comparing HPSD to SPSD (71 vs 101min; p\u3c0.01), HPSD to TCNC (71 vs 146min; p\u3c0.01), and SPSD to TCNC groups (101 vs 146min; p\u3c0.01). There was no difference in sinus rhythm maintenance after 3 or 12-months between groups overall, and when stratified by AF type, left atrial volume, CHA2DS2-VASc score, or left ventricular EF. There was a numerical difference in safety with no adverse events in HPSD (0/76 in HPSD vs 1/51 in SPSD vs 3/44 in TCNC; p=0.06). Discussion: AF ablation utilizing HPSD ablation reduced procedure times with similar sinus rhythm maintenance compared to SPSD and TCNC ablation. This supports the movement to replace SPSD and TCNC with the novel HPSD approach. Further research is warranted with larger populations and longer follow-up

Blood outgrowth endothelial cell migration and trapping in vivo: a window into gene therapy

Human blood outgrowth endothelial cells (hBOEC) may be useful delivery-cells for gene therapy. hBOEC have high expansion capacity and stable phenotype. If incorporated into blood vessels, hBOEC could release therapeutic agents directly into the blood stream. However, little is known about lodging and homing of hBOEC in vivo. We examined the homing patterns of hBOEC in mice, and explored extending cell-based FVIII gene therapy from mice to larger animals. hBOEC were injected into NOD/SCID mice to determine where they localize, how localization changes over time and if there were toxic effects on host organs. The presence of hBOEC in mouse organs was determined by qPCR and immunofluorescence microscopy. hBOEC lodged most notably in mouse lungs at 3 h, but by 24 h there were no differences between 9 organs. hBOEC longevity was assessed up to 7 months in vivo. hBOEC expanded well and then plateaued in vivo. hBOEC from older cultures expanded equally well in vivo as younger. hBOEC caused no noticeable organ toxicity up to 3 days post-injection. When mice were pretreated with antibodies to E-selectin, P-selectin or anti-α4 integrin prior to hBOEC injection, the number of hBOEC in lungs at 3h was inhibited. Preliminary studies infusing hemophilic dogs with autologous canine BOEC over-expressing FVIII (B-domain deleted) showed improvement in whole blood clotting times (WBCT). In conclusion, the survivability, expandability and lack of toxicity of BOEC in vivo indicate that they may be valuable host cells for gene therapy