Machine learning approaches for sentiment analysis: A survey

Sentiment Analysis or Opinion Mining is popular task of Natural Language Processing (NLP) performed on textual data generated by users to know the orientation or sentiment of the text. To perform Sentiment Analysis, it is critical to create an accurate and precise model, machine learning techniques are heavily utilized to build an accurate model. Deep learning and transfer learning techniques have been found to have increased utilization and better results, making them one of the most popular research areas around the world. Hotel and restaurant industries analyze reviews to obtain a deeper understanding of their client’s needs, likes and dislikes, whereas specialists use Twitter data and stock market news items to forecast stock market trends. Machine Learning algorithms are most essential part of a Sentiment Analysis model, this survey paper analyze all the widely used Machine Learning Approaches for Sentiment Analysis. A brief introduction on Methodology for Sentiment Analysis is given along with conclusion and future scope and in the field of Sentiment Analysis

Bactericidal, fungicidal and anthelmintic activities of Alstonia scholaris bark extracts

Plant based medicines are effective against many human infectious diseases either by paralysing or killing the pathogen. In the present study, petroleum ether, chloroform, ethanol and aqueous extracts of Alstonia scholaris bark were screened for their bactericidal, fungicidal and anthelmintic properties. Antibacterial activity revealed that chloroform extract at the 20 mg/ml showed significant antibacterial effect. Nevertheless, petroleum ether, ethanol and aqueous extracts also showed antibacterial effect against E. coli and S. dyscentreae, but less effective than chloroform extract.  All the extracts were not as potent as the standard drug ciprofloxacin. Fungicidal activity revealed that among all the test extracts, ethanol extract at 20 mg/ml showed significant fungicidal effect against Rhizopus. . Interestingly, petroleum ether and ethanol extracts at 20 mg/ml showed more significant fungicidal action when compared to standard drug sulphamethoxazole. Anthelmintic activity of A. scholaris extracts was carried out at four different concentrations viz., 2.5, 5.0, 10.0 and 20.0 mg/ml to evaluate their effect in inducing paralysis and death in Pheretima posthuma. Anthelmintic activity revealed that petroleum ether extract at 20 mg/ml induced paralysis in worms within 12 min and death within 25.33 min. However, chloroform, ethanol and aqueous extracts at 20 mg/ml also showed significant anthelmintic activity. Among all the extracts of A. scholaris, chloroform extract was most potent at concentration 20 mg/ml but less efective than standard drug albendazole. This investigation revealed that all the extracts of A. scholaris showed efficient bactericidal, fungicidal and anthelmintic activity against the test pathogens indicating the medicinal property of A. scholaris

Bactericidal, fungicidal and anthelmintic activities of Alstonia scholaris bark extracts

Plant based medicines are effective against many human infectious diseases either by paralysing or killing the pathogen. In the present study, petroleum ether, chloroform, ethanol and aqueous extracts of Alstonia scholaris bark were screened for their bactericidal, fungicidal and anthelmintic properties. Antibacterial activity revealed that chloroform extract at the 20 mg/ml showed significant antibacterial effect. Nevertheless, petroleum ether, ethanol and aqueous extracts also showed antibacterial effect against E. coli and S. dyscentreae, but less effective than chloroform extract.  All the extracts were not as potent as the standard drug ciprofloxacin. Fungicidal activity revealed that among all the test extracts, ethanol extract at 20 mg/ml showed significant fungicidal effect against Rhizopus. . Interestingly, petroleum ether and ethanol extracts at 20 mg/ml showed more significant fungicidal action when compared to standard drug sulphamethoxazole. Anthelmintic activity of A. scholaris extracts was carried out at four different concentrations viz., 2.5, 5.0, 10.0 and 20.0 mg/ml to evaluate their effect in inducing paralysis and death in Pheretima posthuma. Anthelmintic activity revealed that petroleum ether extract at 20 mg/ml induced paralysis in worms within 12 min and death within 25.33 min. However, chloroform, ethanol and aqueous extracts at 20 mg/ml also showed significant anthelmintic activity. Among all the extracts of A. scholaris, chloroform extract was most potent at concentration 20 mg/ml but less efective than standard drug albendazole. This investigation revealed that all the extracts of A. scholaris showed efficient bactericidal, fungicidal and anthelmintic activity against the test pathogens indicating the medicinal property of A. scholaris

A review on laboratory liver function tests

Laboratory liver tests are broadly defined as tests useful in the evaluation and treatment of patients with hepatic dysfunction. The liver carries out metabolism of carbohydrate, protein and fats. Some of the enzymes and the end products of the metabolic pathway which are very sensitive for the abnormality occurred may be considered as biochemical marker of liver dysfunction. Some of the biochemical markers such as serum bilirubin, alanine amino transferase, aspartate amino transferase, ratio of aminotransferases, alkaline phosphatase, gamma glutamyl transferase, 5 ’ nucleotidase, ceruloplasmin, α-fetoprotein are considered in this article. An isolated or conjugated alteration of biochemical markers of liver damage in patients can challenge the clinicians during the diagnosis of disease related to liver directly or with some other organs. The term “liver chemistry tests ” is a frequently used but poorly defined phrase that encompasses the numerous serum chemistries that can be assayed to assess hepatic function and/or injury. Key words: Laboratory liver test, bilirubin, alanine amino transferase, aspartate amino transferase, ratio of aminotransferases, alkaline phosphatase, gamma glutamyl transferase, 5 ’ nucleotidase, ceruloplasmin, α-fetoprotein 1 Page numbers not for citation purposesLaboratory Liver Test

Synthesis, ABTS-Radical Scavenging Activity, and Antiproliferative and Molecular Docking Studies of Novel Pyrrolo[1,2-<i>a</i>]quinoline Derivatives

<div><p></p><p>A new 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS)-radical scavenging and antiproliferative agents of pyrrolo[1,2-<i>a</i>]quinoline derivatives have been synthesized. An efficient method for the synthesis of 14 novel diversified pyrrolo[1,2-<i>a</i>]quinoline derivatives has been described using 4-(1,3-dioxolan-2-yl)quinoline and different phenacyl bromides in acetone and followed by reacting with different acetylenes in dimethylformamide/K₂CO₃. The structure of the newly synthesized compounds was determined by infrared, ¹H NMR, ¹³C NMR, mass spectrometry, and elemental analysis. The in vitro antioxidant activity revealed that among all the tested compounds <b>5n</b> exhibited maximum scavenging activity with ABTS. Compound <b>5b</b> has showed good antiproliferative activity as an inhibitor of epidermal growth factor receptor (EGFR) tyrosine kinase.</p></div