A Survey on Sentiment Mining

In past days before putting money into any product people used to ask judgment to their family, friend circle and colleagues and then they take the decision. In today’s world there is a boom of World Wide Web, enormous amount of data is available on internet so while purchasing a product instead of asking to people customer take decisions by analyzing electronic text. As the growth of e-commerce crowds of people encouraged to write their opinion about numerous merchandise in the form of statements/comments on countless sites like facebook,flipkart,snapdeal,amazon,bloggres,twiter,etc.This comments are the sentiments about the services expressed by users and they are categorized into positive, negative and neutral. Different techniques are use for summarizing reviews like Information Retrieval, Text Mining Text Classification, Data Mining, and Text Summarizing. Countless people write their sentiments on plenty of sites. These comments are written in random order so it may cause trouble in usefulness of the information. If someone wants to find out the impact of the usability of any product then he has to manually read all the sentiments and then classify it, which is practically burdensome task. Sentiment mining is playing major role in data mining; it is also referred as sentiment analysis. This field helps to analyze and classify the opinion of users. In this paper we will discuss various techniques, applications and challenges face by the sentiment mining

An unusual presentation of nabothian cyst: a case report

Nabothian cysts are common gynecologic findings and rarely of clinical significance. They are not problematic unless they are sizeable and present secondary symptoms like in this case. Nabothian cysts are usually associated with chronic cervicitis, an inflammatory condition of cervix, and are harmless and usually disappear on their own. Here we report an interesting case of multiple large nabothian cysts presented with continuous, thin & copious watery discharge, a distressing symptom, mimicking genitourinary fistula. This case is reported for the rarity of symptoms of continuous copious thin watery discharge per vaginum. Very rarely nabothian cyst needs hysterectomy as in our case

Solar energy harvesting in magnetoelectric coupled manganese ferrite nanoparticles incorporated nanocomposite polymer films

Poly(vinylidenefluoride-co-trifluoroethylene) (P(VDF-TrFE)) based pyroelectric as well as magnetoelectric materials offer great promises for energy harvesting for flexible and wearable applications. Hence, this work focus on solar energy harvesting as well as magnetoelectric phenomenon in two phase nanocomposite film where the constituting phases are manganese ferrite (MnFe2O4) nanoparticles and P(VDF-TrFE) polymer. Composite films have been prepared using solution casting technique. X-ray diffraction result shows higher crystallinity of these films. The ferroelectric, magnetic and magnetoelectric properties in variation with applied field and volume percentage of ferrite nanoparticles have been investigated. The preparation condition was optimized in such a way that it results improved ferroelectric polarization of nanocomposite film after incorporation of small amount of ferrite nanoparticles. The maximum magnetoelectric-coupling coefficient of about 156 mV/Oe-Cm was obtained for optimum nanocomposite film when DC bias field was applied perpendicular to electric polarization direction. From a pyroelectric device perspective, solar energy harvesting is also reported. An open circuit voltage of 5V and short circuit current of order of ~1 nA is demonstrated without any pre amplification. Hence, the combination of magnetoelectric and pyroelectric properties of nanocomposite film presented here indicate as a perfect candidate for smart materials, spintronics devices and specified magnetoelectric-based applications

Effect of nano-size on magnetostriction of BiFeO3 and exceptional magnetoelectric coupling properties of BiFeO3_P(VDF-TrFE) polymer composite films for magnetic field sensor application

The existence of magnetostriction in bulk BiFeO3 is still a matter of investigation and it is also an issue to investigate the magnetostriction effect in nano BiFeO3. Present work demonstrates the existence of magnetostrictive strain in superparamagnetic BiFeO3 nanoparticles at room temperature and the magnetoelectric coupling properties in composite form with P(VDFTrFE). Despite few reports on the magnetostriction effect in bulk BiFeO3 evidenced by the indirect method, the direct method (strain gauge) was employed in this work to examine the magnetostriction of superparamagnetic BiFeO3. In addition, a high magnetoelectric coupling coefficient was observed by the lock-in technique for optimized BiFeO3_P(VDF-TrFE) nanocomposite film. These nanocomposite films also exhibit room-temperature multiferroic properties. These results provide aspects of material with immense potential for practical applications in spintronics and magneto-electronics applications. We report a magnetoelectric sensor using superparamagnetic BiFeO3_P(VDF-TrFE) nanocomposite film for detection of ac magnetic field

A Study Among General Dental Practitioners, Orthodontists and Forensic Odontologists Regarding Forensic Identification in Orthodontic Context

The process of dental identification involves comparing the dentition of the deceased with the latest dental records of presumed dead. It may become challenging to identify an individual whose orthodontic treatment records are untraceable for any reason. In such instances the dentition of the dead who underwent orthodontic treatment may need to be compared with the records before orthodontic treatment. The goal of this study was to determine the accuracy of matching pre and post-orthodontic treatment casts among general dental practitioners (GDPs), orthodontists, and forensic odontologists. Pre and post-orthodontic treatment dental casts from ten patients were used in this study. Pre-orthodontic maxillary and mandibular dental casts were separated from post-orthodontic maxillary and mandibular dental casts. A total of fifteen assessors comprising five orthodontists, five forensic odontologists and five GDPs compared and matched the pre and post-orthodontic dental cast pairs. Results revealed higher correct matches among forensic odontologists (94%) as compared to orthodontists (88%) followed by GDPs (80%). Among the parameters, ‘specific features in the dentition’ were most successful at correct identification. Orthodontic therapy causes morphometric changes in the dentition, which can make comparative identification difficult. Unique features in the dentition present before orthodontic treatment and persistent even after orthodontic treatment such as peculiar attrition facets, etc. can prove highly accurate in the identification

In Vivo Comparison of the Efficiency of En-Masse Retraction Using Temporary Anchorage Devices With and Without Orthodontic Appliances on the Posterior Teeth

Objective: To compare the effectiveness of en-masse retraction of maxillary anterior teeth using temporary anchorage devices with and without orthodontic appliances on the posterior teeth.Methods:In the study, 20 participants (18.25 ± 4.07 years) meeting the inclusion criteria were randomly divided into 2 groups using the sequentially numbered opaque sealed envelopes method. In group I (control group, n = 10), en-masse retraction was carried out with conventional high hooks soldered to the retraction wire and posterior teeth were included. In group II (experimental group, n = 10), the en-masse retraction was carried out without an orthodontic appliance on posterior teeth and a modified retraction wire was incorporated. In both groups, mini-implants were placed bilaterally between the maxillary second premolar and maxillary first molar, and a retraction force of 6 ounces (180 g) was applied using power chains. Lateral cephalograms and study models were taken before retraction and 4 months after retraction. All statistical analyses were performed with Statistical Package for the Social Sciences software with a statistically significant level of 5%. We used unpaired t-tests for the comparison, and the error of the method was assessed using intraclass correlation coefficients and the Bland–Altman method.Results: The maxillary incisor apex retraction, change in maxillary incisor in the vertical plane, and its inclination showed statistically significant differences (P < .05). The rate of retraction was significantly greater in the experimental group when evaluated clinically and in the study models (P < .05).Conclusion: The rate/amount of retraction evaluated clinically and in the study models was significantly faster/greater when the posterior teeth were not included during anterior retraction. Also, a greater amount of bodily retraction of anterior teeth was achieved

Correlation between Maternal Mid Upper Arm Circumference and Neonatal Birth Weight: A Case-control Study

Introduction: Birth weight is the best marker of optimal foetal growth and development. Apart from being an important determinant of newborn survival, Low Birth Weight (LBW) also indicates nutritional deprivation and poor health of the mother during and before pregnancy. On the other hand, Maternal nutrition and anthropometry also affect infant’s birth weight. Aim: To find out the correlation of maternal Mid Upper Arm Circumference (MUAC) and neonatal birth weight. Materials and Methods: This case-control study was conducted at Datta Meghe Medical College and Shalinitai Meghe Hospital and Research Centre (tertiary care hospital), Nagpur, Maharashtra, India, from September 2021 to February 2022. Convenient sampling method was used to select cases and control. All the mothers who had delivered full term live singleton new born with birth weight <2.5 kg were selected as a case and mothers who had delivered singleton new born babies ≥2.5 kg were selected as a control. There was a total of 100 mother-infant dyads with 50 pairs having infant with LBW (cases) and the rest 50 with infants having normal birth weight (controls). Data was collected on the socio-demographic status of the mothers using a predesigned questionnaire along with their weight (from record), maternal MUAC measurement, and birth weight of their babies. Analysis was done using Statistical Package for Social Sciences (SPSS) version 16.0. Results: Mean age of cases was 24.48±2.757 years and that of controls was 24.52±2.255 years. Mean birth weight was 2206±200.9 gm for cases and 2934±305.79 gm for the control group. Maternal MUAC was ≤23 cm in 52% of cases and only 16% in controls (OR- 5.69, CI: 2.23-13.74, p-value=0.001). A linear correlation was found between maternal MUAC and birth weight (r-value=0.3376, p-value=0.001). Conclusion: As there was a positive correlation between maternal MUAC ≤23 cm and LBW babies, maternal MUAC can be used as a predictor of LBW, and hence, measurement of maternal MUAC should be included during antenatal check-ups

New genetic loci link adipose and insulin biology to body fat distribution.

Body fat distribution is a heritable trait and a well-established predictor of adverse metabolic outcomes, independent of overall adiposity. To increase our understanding of the genetic basis of body fat distribution and its molecular links to cardiometabolic traits, here we conduct genome-wide association meta-analyses of traits related to waist and hip circumferences in up to 224,459 individuals. We identify 49 loci (33 new) associated with waist-to-hip ratio adjusted for body mass index (BMI), and an additional 19 loci newly associated with related waist and hip circumference measures (P < 5 × 10(-8)). In total, 20 of the 49 waist-to-hip ratio adjusted for BMI loci show significant sexual dimorphism, 19 of which display a stronger effect in women. The identified loci were enriched for genes expressed in adipose tissue and for putative regulatory elements in adipocytes. Pathway analyses implicated adipogenesis, angiogenesis, transcriptional regulation and insulin resistance as processes affecting fat distribution, providing insight into potential pathophysiological mechanisms