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Establishing a regulatory gene network for Arabidopsis anther cell differentiation

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Establishing a regulatory gene network for Arabidopsis anthe...

Deep Learning-Based Classification of Rotten Fruits and Identification of Shelf Life

中国遗传学会植物遗传和基因组学专业委员会2007年学术研讨会

作者： Asela J．Wijeratne reka albert Intercollege Graduate Program in Plant Biology the Pennsylvania State UniversityUniversity ParkPA 16802 Department of Biology and the Huck Institutes of the Life Sciencesthe Pennsylvania State UniversityUniversity ParkPA 16802 Department of Physics the Pennsylvania State UniversityUniversity ParkPA 16802

The flowering plant anther contains highly specialized reproductive and somatic ceils required for male *** studies have uncovered several mutants that are defective for anther development,including sporocyteless (spl...

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Computers, Materials & Continua 2024年第1期78卷 781-794页

作者： S.Sofana reka Ankita Bagelikar Prakash Venugopal V.Ravi Harimurugan Devarajan Centre for Smart Grid Technologies School of Electronics EngineeringVellore Institute of TechnologyChennai600127India School of Electronics Engineering Vellore Institute of TechnologyChennai600127India Department of Electrical Engineering Dr.B R Ambedkar National Institute of TechnologyJalandharPunjab144008India

The freshness of fruits is considered to be one of the essential characteristics for consumers in determining their quality,flavor and nutritional *** primary need for identifying rotten fruits is to ensure that only fresh and high-quality fruits are sold to *** impact of rotten fruits can foster harmful bacteria,molds and other microorganisms that can cause food poisoning and other illnesses to the *** overall purpose of the study is to classify rotten fruits,which can affect the taste,texture,and appearance of other fresh fruits,thereby reducing their shelf *** agriculture and food industries are increasingly adopting computer vision technology to detect rotten fruits and forecast their shelf ***,this research work mainly focuses on the Convolutional Neural Network’s(CNN)deep learning model,which helps in the classification of rotten *** proposed methodology involves real-time analysis of a dataset of various types of fruits,including apples,bananas,oranges,papayas and ***,machine learningmodels such as GaussianNaïve Bayes(GNB)and random forest are used to predict the fruit’s shelf *** results obtained from the various pre-trained models for rotten fruit detection are analysed based on an accuracy score to determine the best *** comparison to other pre-trained models,the visual geometry group16(VGG16)obtained a higher accuracy score of 95%.Likewise,the random forest model delivers a better accuracy score of 88% when compared with GNB in forecasting the fruit’s shelf *** developing an accurate classification model,only fresh and safe fruits reach consumers,reducing the risks associated with contaminated ***,the proposed approach will have a significant impact on the food industry for efficient fruit distribution and also benefit customers to purchase fresh fruits.

关键词： Rotten fruit detection shelf life deep learning convolutional neural network machine learning gaussian naïve bayes random forest visual geometry group16

Plant-based vaccines against viral hepatitis: A panoptic review

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World Journal of Virology 2024年第3期13卷 49-55页

作者： Devanathan reka Chandrashekaran Girish Department of Pharmacology Jawaharlal Institute of Postgraduate Medical Education and ResearchPuducherry 605006India

The traditional vaccines against hepatitis have been instrumental in reducing the incidence of some types of viral hepatitis;however,the need for cost-effective,easily distributable,and needle-free vaccine alternatives has led to the exploration of plant-based ***-based techniques offer a promising avenue for producing viral hepatitis vaccines due to their low-cost cultivation,scalability,and the potential for oral *** review highlights the successful expression of hepatitis B surface antigens in plants and the subsequent formation of virus-like particles,which have shown immunogenicity in preclinical and clinical *** challenges such as achieving sufficient antigen expression levels,ensuring consistent dosing,and navigating regulatory frameworks,are *** review considers the potential of plant-based vaccines to meet the demands of rapid vaccine deployment in response to outbreaks and their role in global immunization strategies,particularly in resource-limited *** review underscores the significant strides made in plant molecular farming and the potential of plant-based vaccines to complement existing immunization methods against viral hepatitis.

关键词： Plant-based therapeutics Plant vaccines Edible vaccines Viral hepatitis Phytopharmacology and molecular pharming

The Influence of Ratings on Choosing Accommodation

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Sociology Study 2015年第4期5卷 282-290页

作者： reka Somlai Szent Istvan University Hungary

Present research is inspired to study the effects and influences of customer ratings and reviews on choosing a hostel accommodation. The hostel industry is one of the fastest growing fields of tourism. Several studies already exist about the influences of ratings, concentrating mainly on hotels. However, using the same results for hostels, might lead to false conclusions. Not only the natures of the two accommodations are different, so as the customers. Hostels target mainly youth travelers, which includes the age group from 20 to 35 years. Youth travelers, often called ＂Generation Y＂ have specific expectations, needs, and budget which indicate the importance of study at this field as well. The research studies the youth traveler＇s booking habits, expectations before arriving to the accommodation, how often they leave reviews and rate hostels, what is the most important aspect when they are choosing the establishment, importance of how high the rating is, whether they read the reviews before booking an accommodation, and what a hostel has to have to give them 100% rating and a good review.

关键词： Hostel rating review price

Mental health-related healthcare service utilisation and psychotropic drug dispensation trends in British Columbia during COVID-19 pandemic:a population-based study

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General Psychiatry 2023年第1期36卷 50-57页

作者： Moe Zandy Sylvia El Kurdi Hasina Samji Geoff McKee reka Gustafson Kate Smolina BC Centre for Disease Control VancouverBritish ColumbiaCanada Faculty of Health Sciences Simon Fraser UniversityBurnabyBritish ColumbiaCanada School of Population and Public Health The University of British ColumbiaVancouverBritish ColumbiaCanada BC Children's Hospital Research Institute VancouverBritish ColumbiaCanada

Background The impact of the COVID-19 pandemic on the population’s mental health is vital for informing public health policy and ***,information on mental health-related healthcare service utilisation trends beyond the first year of the pandemic is *** We examined mental health-related healthcare service utilisation patterns and psychotropic drug dispensations in British Columbia,Canada,during the COVID-19 pandemic compared with the prepandemic *** We conducted a retrospective population-based secondary analysis using administrative health data to capture outpatient physician visits,emergency department visits,hospital admissions and psychotropic drug *** examined time trends of mental health-related healthcare service utilisation and psychotropic drug dispensations between January to December 2019(prepandemic period)and January 2020 to December 2021(pandemic period).In addition,we calculated age-standardised rates and rate ratios to compare mental health-related healthcare service utilisation before and during the first two years of the COVID-19 pandemic,stratified by year,sex,age and *** By late 2020,except for emergency department visits,utilisation of healthcare services recovered to prepandemic *** 2019 and 2021,the monthly average rate for overall mental health-related outpatient physician visits,emergency department visits and psychotropic drug dispensations increased significantly by 24%,5%and 8%,*** and statistically significant increases were observed among 10–14 year-olds(44%in outpatient physician visits,30%in emergency department visits,55%in hospital admissions and 35%in psychotropic drug dispensations)and 15–19 year-olds(45%in outpatient physician visits,14%in emergency department visits,18%in hospital admissions and 34%in psychotropic drug dispensations).Additionally,these increases were more prominent among females than males,with some variation for specif

关键词： service consequences Canada

Large inter annual variation in air quality during the annual festival ‘Diwali' in an Indian megacity

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Journal of Environmental Sciences 2016年第5期28卷 265-272页

作者： Neha Parkhi Dilip Chate Sachin D.Ghude Sunil Peshin Anoop Mahajan reka Srinivas Divya Surendran Kaushar Ali Siddhartha Singh Hanumant Trimbake Gufran Beig Indian Institute of Tropical Meteorology Pashan Pune India India Meteorological Department New Delhi India

A network of air quality and weather monitoring stations was established under the System of Air Quality Forecasting and Research（SAFAR） project in Delhi. We report observations of ozone（O_3）, nitrogen oxides（NO_x）, carbon monoxide（CO） and particulate matter（PM_2.5and PM_（10）） before, during and after the Diwali in two consecutive years, i.e., November 2010 and October 2011. The Diwali days are characterised by large firework displays throughout India. The observations show that the background concentrations of particulate matter are between 5 and 10 times the permissible limits in Europe and the United States. During the Diwali-2010, the highest observed PM_（10） and PM_2.5mass concentration is as high as2070 μg/m^3 and 1620 μg/m3, respectively（24 hr mean）, which was about 20 and 27 times to National Ambient Air Quality Standards（NAAQS）. For Diwali-2011, the increase in PM_（10） and PM_2.5mass concentrations was much less with their peaks of 600 and of 390 μg/m^3 respectively, as compared to the background concentrations. Contrary to previous reports,firework display was not found to strongly influence the NO_x, and O_3 mixing ratios, with the increase within the observed variability in the background. CO mixing ratios showed an increase. We show that the large difference in 2010 and 2011 pollutant concentrations is controlled by weather parameters.

关键词： Particulate pollution Fireworks Trace gases System of Air Quality Forecasting and Research(SAFAR) Air quality Diwali

Effect of melatonin on the severity of L-arginine-induced experimental acute pancreatitis in rats

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World Journal of Gastroenterology 2006年第2期12卷 251-258页

作者： Annamaria Szabolcs Russel J Reiter Tamas Letoha Peter Hegyi Gabor Papai Ilona Varga Katalin Jarmay Jozsef Kaszaki reka Sari Zoltan Rakonczay Jr Janos Lonovics Tamas Takacs st Department of Medicine University of SzegedHungary Department of Cellular and Structural Biology University of TexasHealth Science CentreSan AntonioTexasUnited States Institute of Chemistry University of SzegedHungary Biological Research Centre Hungarian Academy of SciencesSzegedHungary Biological Isotope Laboratory University of SzegedHungary Institute of Experimental Surgery University of SzegedHungary

AIM： To determine the effect of melatonin pre- and post-treatment on the severity of L-arginine （L-Arg） -induced experimental pancreatitis in rats. METHODS： Male Wistar rats （25） were divided into five groups. Those in group A received two injections of 3.2 g/kg body weight L-Arg i.p. at an interval of 1 h. In group MA, the rats were treated with 50 mg/kg body weight melatonin i.p. 30 min prior to L-Arg administration. In group AM, the rats received the same dose of melatonin 1 h after L-Arg was given. In group M, a single dose of melatonin was administered as described previously. In group C the control animals received physiological saline injections i.p. All rats were exsanguinated 24 h after the second L-Arg injection. RESULTS： L-Arg administration caused severe necrotizing pancreatitis confirmed by the significant elevations in the serum amylase level, the pancreatic weight/body weight ratio （pw/bw）, the pancreatic IL-6 content and the myeloperoxidase activity, relative to the control values. Elevation of the serum amylase level was significantly reduced in rats given melatonin following L-Arg compared to rats injected with L-Arg only. The activities of the pancreatic antioxidant enzymes （Cu/Zn-superoxide dismutase （CulZn-SOD） and catalase （CAT）） were significantly increased 24 h after pancreatitis induction. Melatonin given in advance of L-Arg significantly reduced the pancreatic CAT activity relative to that in the rats treated with L-Arg alone. In the liver, L-Arg significantly increased the lipid peroxidation level, and the glutathione peroxidase and Cu/Zn-SOD activities, whereas the Mn-SOD activity was reduced as compared to the control rats. Melatonin pre-treatment prevented these changes. CONCLUSION： Melatonin is an antioxidant that is able to counteract some of the L-Arg-induced changes during acute pancreatitis, and may therefore be helpful in the supportive therapy of patients with acute necrotizing pancreatitis.

关键词： Acute pancreatitis Melatonin Scavengers

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霓裳羽衣完全观鸟手册

摄影之友 2020年第9期 46-113页

作者：本刊编辑部刘可为 Eliot Porter Tim Flach Robert Clark Leila Jeffreys Pedro Jarque Zsolt Kudich reka Zsirmon 水谷吉法 Ezio Ratti SSC

艾略特·波特1901年出生在一个富裕的伊利诺伊州家庭,他对科学的热爰和严谨是从小来自他的父亲的影响。他很早就成为了一名业余摄影师,在緬因州大云杉头岛拍摄鸟类作品的时候发现了自己的拍摄灵感与个人风格。在他拍摄时期,黑白摄影尤... 详细信息

艾略特·波特1901年出生在一个富裕的伊利诺伊州家庭,他对科学的热爰和严谨是从小来自他的父亲的影响。他很早就成为了一名业余摄影师,在緬因州大云杉头岛拍摄鸟类作品的时候发现了自己的拍摄灵感与个人风格。在他拍摄时期,黑白摄影尤其是黑白风景是当时拍摄的主流,这也侧面反映出了安塞尔·亚当斯等摄影师对于拍摄风光的极大影响。

关键词：安塞尔·亚当斯伊利诺伊州霓裳羽衣黑白摄影摄影师个人风格拍摄艾略特