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Approaches for enhancing the photocatalytic activities of barium titanate:A review

Journal of Energy Chemistry 2022年第10期31卷 160-188,I0004页

作者： gopal Panthi Mira Park Carbon Composite Energy Nanomaterials Research Center Woosuk UniversityWanjuChonbuk 55338Republic of Korea Woosuk Institute of Smart Convergence Life Care(WSCLC)Woosuk UniversityWanjuChonbuk 55338Republic of Korea

Barium titanate(Ba TiO_(3)),a dielectric/ferroelectric semiconductor with perovskite structures is the most widely used photocatalyst in the field of environmental applications due to its low-cost,chemical stability,and *** types and forms of Ba TiO_(3)have shown their great potential toward the significant photocatalytic reactions owing to the several beneficial properties,including appropriate band positions,high oxygen vacancies,multiple crystal structures,the feasibility of size and morphology tailoring,spontaneous polarization,rapid migration of photogenerated charge carriers,and band ***,the large band gap and recombination of photogenerated charge carriers limit the overall photocatalytic efficiency of Ba TiO_(3).These difficulties can be further overcome by modifying the electronic band structure of Ba TiO_(3)to broaden its absorption to the visible region of the ***,this review encompasses various strategies,including modification of sizes and morphologies of particles by varying the reaction time and synthesis temperature,doping with non-metals/metals,loading with noble metals,and forming heterojunctions for enhancing the photocatalytic activities of Ba TiO_(3)-based photocatalysts possessing the effective capability of charge carrier separation,trapping and their transfer to the surface of ***,this review highlights the photocatalytic applications of Ba TiO_(3)-based photocatalysts along with the proposed mechanism in dyes/drugs degradation,H_(2)production,and bacteria killing.

关键词： Electrospinning BaTiO_(3)-photocatalyst Ferroelectricity Heterojunction Environmental remediation

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Experimental investigation on concrete overlaid with textile reinforced mortar:Influences of mix,temperature,and chemical exposure

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Frontiers of Structural and Civil Engineering 2023年第2期17卷 271-283页

作者： Smitha GOPINATH Ramesh gopal Hemalatha THIYAGARAJAN CSIR-Structural Engineering Research Centre Chennai 600113India

Textile reinforced mortar is widely used as an overlay for the repair,rehabilitation,and retrofitting of concrete ***,textile reinforced concrete has been identified as a suitable lining material for improving the durability of existing concrete *** this study,we developed a textile-reinforced mortar mix using river sand and evaluated the different characteristics of the textile-reinforced mortar under various exposure *** were carried out in two *** the first phase,the pullout strength,temperature resistance,water absorption,and compressive and bending strength values of three different textile-reinforced mortar mixes with a single type of textile reinforcement were *** the second phase,the chemical resistance of the mix that showed the best performance in the abovementioned tests was examined for use as an overlay for a concrete *** were performed on three different thicknesses of the textile reinforced mortar overlaid on concrete specimens that were subjected to acidic and alkaline *** flexural responses and degradations of the textile reinforced mortar overlaid specimens were examined by performing bending *** experimental findings indicated the feasibility of using textile reinforced mortar as an overlay for durable concrete construction practices.

关键词： textile reinforced mortar bending tests acid and alkaline environment concrete overlay

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Role of bacteria in carcinogenesis, with special reference to carcinoma of the gallbladder

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World Journal of Gastroenterology 2010年第43期16卷 5395-5404页

作者： gopal Nath Anil K Gulati Vijay K shukla Department of Microbiology Institute of Medical Sciences Banaras Hindu University Department of General Surgery Institute of Medical Sciences Banaras Hindu University

Carcinoma of the gallbladder (CaGB) is the fifth commonest gastrointestinal tract cancer and is endemic in several countries. The interplay of genetic susceptibility, infections, and life style factors has been proposed to be responsible for carcinogenesis of gallbladder. Persistence of infection leading to chronic inflammation, and production of certain toxins and metabolites with carcinogenic potentials, by certain bacteria has been speculated to be involved in the transformation of the gallbladder epithelium. Therefore, any bacteria that have evolved to acquire both of the above carcinogenic mechanisms can cause cancer. Salmonella typhi has been found to be prominently associated with CaGB. Chronic typhoid carriage (persistence) and production of mediators of chronic infl ammation and a genotoxic toxin (cytotoxic distending toxin, CdtB) are also known for this bacterium. Furthermore, the natural concentrating function of the gallbladder might amplify the carcinogenic effect of the mediators of carcinogenesis. In addition to S. typhi, certain species of Helicobacter (H. bilis and H. hepaticus) and Escherichia coli have also been implicated in carcinogenesis. As the isolation rate is verypoor with the presently available culture techniques, the existence of bacteria in a viable but non-cultivable state is quite likely; therefore, sensitive and specif ic molecular techniques might reveal the etiological role of bacterial infection in gallbladder carcinogenesis. If bacteria are found to be causing cancers, then eradication of such infections might help in reducing the incidence of some cancers.

关键词： Bacteria Chronic infl ammation Carcinogen Bacterial toxins Carcinoma gallbladder DNA damage

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Specialized metabolites as versatile tools in shaping plant-microbe associations

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Molecular Plant 2023年第1期16卷 122-144页

作者： gopal Singh Himani Agrawal Paweł Bednarek Institute of Bioorganic Chemistry Polish Academy of SciencesNoskowskiego 12/1461-704 PoznańPoland

Plants are rich repository of a large number of chemical compounds collectively referred to as specialized *** compounds are of importance for adaptive processes including responses against changing abiotic conditions and interactions with various co-existing *** of the strikingly affirmed functions of these specialized metabolites is their involvement in plants’life-long interactions with complex multi-kingdom microbiomes including both beneficial and harmful *** developments in genomic and molecular biology tools not only help to generate well-curated information about regulatory and structural components of biosynthetic pathways of plant specialized metabolites but also to create and screen mutant lines defective in their *** this review,we have comprehensively surveyed the function of these specialized metabolites and discussed recent research findings demonstrating the responses of various microbes on tested mutant lines having defective biosynthesis of particular *** addition,we attempt to provide key clues about the impact of these metabolites on the assembly of the plant microbiome by summarizing the major findings of recent comparative metagenomic analyses of available mutant lines under customized and natural microbial ***,we delineate benchmark initiatives that aim to engineer or manipulate the biosynthetic pathways to produce specialized metabolites in heterologous systems but also to diversify their immune *** denoting the function of these metabolites,we also discuss the critical bottlenecks associated with understanding and exploiting their function in improving plant adaptation to the environment.

关键词： microbiome nitrogen/sulfur-containing compounds phenylpropanoids plant immunity symbiosis terpenoids

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Bilateral pericapsular end nerve blocks for steroid-induced avascular necrosis following COVID-19 infection requiring bilateral total hip replacement

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World Journal of Anesthesiology 2024年第1期13卷 1-8页

作者： Somita Christopher Sweety Dutta Thota Venkata Sanjeev gopal Department of Anaesthesiology Care HospitalsHyderabad 500025India

BACKGROUND Osteonecrosis or avascular necrosis(AVN)of the hip was one of the dreaded complications of coronavirus disease 2019(COVID-19),which emerged in patients who received steroid *** have been a mainstay in the treatment protocol of COVID-19 *** corticosteroid drugs used in patients suffering from COVID-19 were intravenous(IV)or oral dexamethasone,methylprednisolone or *** use of such high doses of corticost-eroids has shown very positive results and has been lifesaving in many ***,long-term consequences were drug-induced diabetes,osteoporosis,Cushing syndrome,muscle wasting,peripheral fat mobilization,AVN,hirsutism,sleep disturbances and poor wound healing.A significant number of young patients were admitted for bilateral total hip replacements(THR)secondary to AVN following steroid use for COVID-19 *** To assess the efficacy of bilateral pericapsular end nerve group(PENG)blocks in patients posted for bilateral THR post-steroid therapy after COVID-19 infection and assess the time taken to first ambulate after *** This prospective observational study was conducted between January 2023 and August 2023 at Care Hospitals,Hyderabad,*** young patients 30-35 years of age who underwent bilateral THR were studied after due consent over 8 *** the patients received spinal anaesthesia for surgery and bilateral PENG blocks for postoperative *** The duration of surgery was 2.5 h on *** out of twenty patients(85%)had a Visual Analog Score(VAS)of less than 2 and did not require any *** patient was removed from the study,as he required *** remaining two patients had a VAS of more than 8 and received IV morphine post-operatively as a rescue analgesic *** out of seventeen patients(88.2%)could be mobilized 12 h after the *** Osteonecrosis or AVN of the hip was one of the dreaded complications of COVID-19

关键词： Avascular necrosis Pericapsular end nerve group block Analgesia Hip replacement COVID-19 Steroids

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Illumination-Free Clustering Using Improved Slime Mould Algorithm for Acute Lymphoblastic Leukemia Image Segmentation

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Journal of Bionic Engineering 2023年第6期20卷 2916-2934页

作者： Krishna gopal Dhal Swarnajit Ray Sudip Barik Arunita Das Department of Computer Science and Application Midnapore College(Autonomous)Paschim MedinipurMidnaporeWest BengalIndia Department of Computer Science and Engineering Maulana Abul Kalam Azad University of TechnologyKolkataWest BengalIndia Department of Computer Science and Engineering Kalyani Government Engineering CollegeKalyaniWest BengalIndia

Partitional clustering techniques such as K-Means(KM),Fuzzy C-Means(FCM),and Rough K-Means(RKM)are very simple and effective techniques for image ***,because their initial cluster centers are randomly determined,it is often seen that certain clusters converge to local *** addition to that,pathology image segmentation is also problematic due to uneven lighting,stain,and camera settings during the microscopic image capturing ***,this study proposes an Improved Slime Mould Algorithm(ISMA)based on opposition based learning and differential evolution’s mutation strategy to perform illumination-free White Blood Cell(WBC)*** ISMA helps to overcome the local optima trapping problem of the partitional clustering techniques to some *** paper also performs a depth analysis by considering only color components of many well-known color spaces for clustering to find the effect of illumination over color pathology image *** and visual results encourage the utilization of illumination-free or color component-based clustering approaches for image ***-KM and“ab”color channels of CIELab color space provide best results with above-99%accuracy for only nucleus ***,for entire WBC segmentation,ISMA-KM and the“CbCr”color component of YCbCr color space provide the best results with an accuracy of above 99%.Furthermore,ISMA-KM and ISMA-RKM have the lowest and highest execution times,*** the other hand,ISMA provides competitive outcomes over CEC2019 benchmark test functions compared to recent well-established and efficient Nature-Inspired Optimization Algorithms(NIOAs).

关键词： Pathology image Image segmentation Clustering Color space White blood cell Optimization Swarm intelligence Fuzzy clustering Rough clustering

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Frequently Used Allopathic and Traditional Medicine for COVID-19 Treatment and Feasibility of Their Integration

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Chinese Journal of Integrative Medicine 2022年第11期28卷 1040-1047页

作者： Aditya Upadhayay gopal Patel Dharm Pal Awanish Kumar Department of Biotechnology National Institute of TechnologyRaipurCG(492010)India Laboratory of Medicinal Plant Biotechnology College of PharmacyZhejiang Chinese Medical UniversityHangzhou(310053)China Department of Chemical Engineering National Institute of TechnologyRaipurCG(492010)India

To date,no satisfactory treatment for COVID-19 is *** review reported few recent updates regarding the drugs(allopathy/traditional medicines)used for the treatment of COVID-19 concerning clinical *** of the article spotlight the contribution of allopathic and Ayurvedic drugs to the scientific basis for utilization as a potential therapy against COVID-19 infection and provide new insights on the integration of allopathy and traditional *** advocated the combination of these two systems of treatment will ascertain their integrations,and there would be a good possibility and scope for developing a model of integration in the management of *** discussion may help researchers,physicians,and healthcare policymakers to encourage for effective and integrated use of allopathic and Ayurvedic medicines to control the COVID-19 pandemic more effectively.

关键词： COVID-19 allopathy traditional medicine integration promising therapy

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Corrosion,mechanical and microstructural properties of aluminum 7075-carbon nanotube nanocomposites for robots in corrosive environments

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International Journal of Minerals,Metallurgy and Materials 2023年第6期30卷 1140-1151页

作者： Arun David Satheesh Kumar gopal Poovazhagan Lakshmanan Amith Sukumaran Chenbagam Sri Sivasubramaniya Nadar College of Engineering KalavakkamChennai-603110India

The introduction of in-pipe robots for sewage cleaning provides researchers with new options for pipe inspection,such as leakage,crack,gas,and corrosion detection,which are standard applications common in the current industrial *** question that is frequently overlooked in all these cases is the inherent resistance of the robots to *** mechanical,microstructural,and corrosion properties of aluminum 7075 incorporated with various weight percentages(0,0.5wt%,1wt%,and 1.5wt%)of carbon nanotubes(CNTs)are *** is fabricated using a rotational ultrasonication with mechanical stirring(RUMS)-based casting method for improved corrosion resistance without compromising the mechanical properties of the robot.1wt%CNTs-aluminum nanocomposite shows good corrosion and mechanical properties,meeting the requirements imposed by the sewage environment of the robot.

关键词： aluminum 7075 carbon nanotubes rotational ultrasonication with mechanical stirring mechanical characterization microstructure robot

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Pulmonary infarct masquerading as community-acquired pneumonia in the COVID-19 scenario: A case report

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World Journal of Respirology 2024年第1期13卷 1-6页

作者： K K Mujeeb Rahman gopal Durgeshwar Prasanta R Mohapatra Manoj Kumar Panigrahi Siladitya Mahanty Pulmonary Critical Care and Sleep Medicine All India Institute of Medical SciencesBhubaneswarBhubaneswar 751019India Department of Radiodiagnosis All India Institute of Medical SciencesBhubaneswar 751019India

BACKGROUND Pulmonary embolism(PE)requires a high degree of clinical suspicion for its diagnosis and can mimic pneumonia due to its clinical,radiological,and laboratory ***-existence of PE and pneumonia can also occur,which is surprisingly more common than *** SUMMARY Here,we report a case of a young male who initially presented during the peak of the coronavirus disease 2019 pandemic with features of *** was kept under observation and was later diagnosed and treated for a right main pulmonary artery embolism without any identifiable source of *** PE and pneumonia share common clinical,radiological,and laboratory findings that may delay the diagnosis of *** disproportionate to the extent of radiological involvement could be an indicator of an underlying PE.

关键词： Pneumonia Pulmonary embolism Deep vein thrombosis Pulmonary infarct Case report

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Operation makalu air crash:influence of cognitive and human factors on decision-making

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Forensic Sciences Research 2022年第4期7卷 803-807页

作者： Samarika Dahal gopal Kumar Chaudhary Nitin Kumar Agrawal Department of Dentistry Institute of MedicineKathmanduNepal Department of Forensic Medicine Maharajgunj Medical CampusMaharajgunjKathmanduNepal

Two onboard crew members lost their lives in the fatal Makalu Air Cessna Grand Caravan 208B domestic cargo flight crash on May 16,*** Disaster Victim Identification(DVI)procedure comprises external examination,photography,DNAcollection,fingerprint collection,postmortem examination,antemortem information collection from the family members,and *** major challenge of this operation was dealing with cognitive *** antemortem dental information of one of the deceased was revealed to the forensic experts just before the postmortem *** influenced the testing *** was a tendency to neglect the complete dental examination presuming the identification was ***,during a thorough examination,the forensic odontologist realised that the initial decision was ***,there are few experience-based resources available to resolve cognitive bias *** authors begin by summarising complicated operations in which they have been involved,followed by a discussion of the key sources of cognitive bias along with the solution to resolve these issues in DVI preparedness planning.

关键词： Forensic sciences disaster cognitive bias dental identification mortuary Nepal

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