SAM C-GAN: a method for removal of face masks from masked faces.

The past years of COVID-19 have attracted researchers to carry out benchmark work in face mask detection. However, the existing work does not focus on the problem of reconstructing the face area behind the mask and completing the face that can be used for face recognition. In order to address this problem, in this work we have proposed a spatial attention module-based conditional generative adversarial network method that can generate plausible images of faces without masks by removing the face masks from the face region. The method proposed in this work utilizes a self-created dataset consisting of faces with three types of face masks for training and testing purposes. With the proposed method, an SSIM value of 0.91231 which is 3.89% higher and a PSNR value of 30.9879 which is 3.17% higher has been obtained as compared to the vanilla C-GAN method.

E-learning enhancement through educational data mining with Covid-19 outbreak period in backdrop: A review.

E-learning is fast becoming an integral part of the teaching- learning process, particularly after the outbreak of Covid-19 pandemic. Educational institutions across the globe are striving to enhance their e-learning instructional mechanism in accordance with the aspirations of present-day students who are widely using numerous technological tools - computers, tablets, mobiles, and Internet for educational purposes. In the wake of the evident incorporation of e-learning into the educational process, research related to the application of Educational Data Mining (EDM) techniques for enhancing e-learning systems has gained significance in recent times. The various data mining techniques applied by researchers to study hidden trends or patterns in educational data can provide valuable insights for educational institutions in terms of making the learning process adaptive to student needs. The insights can help the institutions achieve their ultimate goal of improving student academic performance in technology-assisted learning systems of the modern world. This review paper aims to comprehend EDM's role in enhancing e-learning environments with reference to commonly-used techniques, along with student performance prediction, the impact of Covid-19 pandemic on e-learning and priority e-learning focus areas in the future.

A hybrid tiny YOLO v4-SPP module based improved face mask detection vision system.

Law offenders take advantage of face masks to conceal their identities and in the present time of the COVID-19 pandemic wearing face masks is a new norm which makes it a daunting task for the investigation agencies to identify the offenders. To address the issue of detection of people wearing face masks using surveillance cameras, we propose a novel face mask vision system that is based on an improved tiny YOLO v4 object detector. The face masks detection network of the proposed vision system is developed by integrating tiny YOLO v4 with spatial pyramid pooling (SPP) module and additional YOLO detection layer and tested and validated on a self-created face masks detection dataset consisting of more than 50,000 images. The proposed tiny YOLO v4-SPP network achieved a mAP (mean average precision) value of 64.31% on the employed dataset which was 6.6% higher than tiny YOLO v4. Specifically, for detection of the presence of a small object like a face mask on the face region, the proposed tiny YOLO v4-SPP based vision system achieved an AP (average precision) of 84.42% which was 14.05% higher than the original tiny YOLO v4 thus, ensuring that the proposed network is capable of accurate detection of a mask on the face region in real-time surveillance applications where visibility of complete face area is a guideline.

Nutraceutical potential of tree flowers: A comprehensive review on biochemical profile, health benefits, and utilization.

A numerous types of tree flowers are present in nature and few of them such as Rhdodendron, Bauhinia, Mahua, Gulmohar, Palash, Sesbania, Woodfordia, Simbal, etc. are being utilized traditionally as food and medicine by the localities of India. These flowers are rich in phytochemical (flavonoids, anthocyanins, phenolic acids, carotenoids, tannins, saponins) and possessing numerous health benefits (antioxidant activity, anti-inflammation, anti-cancer activity, anti-diabetic activity, hepatoprotective activity). However, because of the low availability (i.e. short blooming period and at limited places) and poor post-harvest life, these flowers are commonly utilized by the local people as food and medicines during their respective flowering times only. A few attempts have been made toward the utilization of some tree flowers (Mahduca longifolia, Rhododendron arboretum), but others are still unexplored and need to be exploited to achieve food and nutritional security as well increase the opportunity of employment and improvement in the socio-economic status of the local tribes. Therefore, to achieve this, the present review was aimed to review and document the status of common edible tree flowers, their phytochemicals potential and, health benefits as well as their utilization as food and medicines.

Nutraceutical Potential of Diet Drinks: A Critical Review on Components, Health Effects, and Consumer Safety.

Background: The purpose of this review paper was to explore the components and their respective health effects and safety aspects regarding the consumption of diet drinks (DDs).Methods: A wide variety of the relevant publications (published before 2018) were identified through searching electronic databases (ScienceDirect, PubMed, SciELO, Google Scholar, Springer Link, and ResearchGate) on the basis of different keywords such as diet drink, market status, consumption pattern, composition, health effects, and regulations related to DDs. After the search of suitable literature, 139 papers were screened and reviewed.Results: Numerous brands of DDs have been introduced in the market along with a wide variety of modifications in order to attract the consumers of all age groups along with their respective professions. The major components of DDs are caffeine, taurine, ginseng, guarana, sodium, potassium, and sweeteners that contribute to the good taste, stimulating effect, increased performance and cognitive function, and reduced stress. However, ingestion of DDs over a prolonged course of time can pose multiple deleterious effects, i.e., intoxication, affective disorder, hypertension, reproductive toxicity, and neurological disorders. Consequently, different regulatory bodies of respective countries have formulated and enforced rules and regulations regarding the composition, consumption, labeling, distribution, and sales of DDs.Conclusions: An awareness regarding the components, consumption, and health effects is greatly required in the present era, and authors have tried to fill this gap.Key teaching pointsRise in socio-economic status, health awareness and change in dietary lifestyle are the major factors that fuel the demand of diet drinks; which has been witnessed by a drastic increase in the consumption pattern of the diet drinks among young to middle-age adults since last decade.A wide variety of the ingredients are used in the preparation of diet drinks including caffeine, ginseng (Panax ginseng), guarana (Paullinia cupana), taurine, artificial sweeteners, B Vitamins, sodium, potassium etc.Diet drinks are generally served cold and contain high levels of caffeine and other artificial sweeteners; which based on dosage, have been known to be beneficial as well as harmful.These ingredients possess numerous health benefits including anti-hypertensive, anti-oxidant, anti-cancer properties, improved metabolic functions, stress reduction and enhanced endurance, exercise and performance and increased cognitive function.A wide range of the adverse health effects such as nervousness, sleeplessness, behavioral changes, decreased appetite, heart palpitations, nausea, vomiting, dehydration etc. is being possessed by diet drinks upon the ingestion of these drinks over a prolonged course of time.Regulatory bodies should determine the safe limits of all ingredients for different age groups to get maximum health benefits.

Fungal-derived xenobiotic exhibits antibacterial and antibiofilm activity against Staphylococcus aureus.

Staphylococcus aureus is an opportunistic pathogen, responsible for superficial and invasive infections both in nosocomial and community-acquired settings. The incidences of infection have become more problematic attributable to emerging drug resistance and biofilm formation. These challenges suggest the need for new antimicrobial agents against S. aureus. In present work, we purified a fungal xenobiotic (FI3) which elicits a potent antimicrobial activity against a list of tested microbes including methicillin sensitive (MSSA) and methicillin resistance (MRSA) S. aureus. The cell growth of MSSA and MRSA were completely ceased with the 1× minimum inhibitory concentration (MIC); 32 µg/mL and 128 µg/mL, respectively. The cell viability severely decreased within 90 min, due to disturbance of membrane homeostasis. This bactericidal effect was enhanced at lower pH (pH 4) with a speculation to retain positive charge. The FI3 potently disrupts biofilm adherence at 64 µg/mL and found to be a safe with no toxic effect on mammalian tissue. FI3 also leads to increase the potency of tested antibiotics. Taken together, we established that FI3 has a potent antimicrobial activity against tested microbes and safer to human tissue. It may be proven a leading molecule for the treatment of bacterial infections.

Formulation and acceptability of foam mat dried seabuckthorn (Hippophae salicifolia) leather.

Technology for utilization of seabuckthorn berries for preparation of fruit leather/bar was optimized by modifying the foam mat drying technique. The conversion of seabuckthorn juice/pulp into foam was standardized by whipping the pulp after addition of CMC @ 0-3% at 5 °C and drying the resultant foam in dehydrator (55 ± 2 °C) to a moisture content of about 12-14%. The fruit bar prepared from sulphited juice/pulp wrapped in a butter paper followed by packing in polyethylene pouches (20 g) and stored at ambient temperature (14.6-26.1 °C) experienced least changes in quality attributes like ascorbic acid (1045.7 mg/100 g vs 997.5 mg/100 g) and carotenoids (80.4 mg/100 g vs 72.3 mg/100 g) as compared to the leather made from the unsulphited pulp. Storage studies indicate that fruit bars are mildly hygroscopic (0.46-0.65) and can be stored within the RH of 46-65% at room temperature.