检索结果-南通市图书馆

Hybrid Image Compression-Encryption Scheme Based on Multilayer Stacked Autoencoder and Logistic Map

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Communications 2022年第1期19卷 238-252页

作者： Neetu Gupta ritu Vijay Computer Science&Engineering Department Banasthali VidyapithBanasthaliIndia Department of Electronics Engineering Banasthali VidyapithBanasthaliIndia.

Secure transmission of images over a communication channel, with limited data transfer capacity, possesses compression and encryption schemes. A deep learning based hybrid image compression-encryption scheme is proposed by combining stacked auto-encoder with the logistic map. The proposed structure of stacked autoencoder has seven multiple layers, and back propagation algorithm is intended to extend vector portrayal of information into lower vector space. The randomly generated key is used to set initial conditions and control parameters of logistic map. Subsequently, compressed image is encrypted by substituting and scrambling of pixel sequences using key stream sequences generated from logistic *** proposed algorithms are experimentally tested over five standard grayscale images. Compression and encryption efficiency of proposed algorithms are evaluated and analyzed based on peak signal to noise ratio(PSNR), mean square error(MSE), structural similarity index metrics(SSIM) and statistical,differential, entropy analysis respectively. Simulation results show that proposed algorithms provide high quality reconstructed images with excellent levels of security during transmission..

关键词： compression-encryption stacked autoencoder chaotic system back propagation algorithm logistic map

Remediation of polycyclic aromatic hydrocarbon-contaminated soils using microbes and nanoparticles: A review

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Pedosphere 2023年第1期33卷 93-104页

作者： ritu PANWAR Jyoti MATHUR Department of Bioscience and Biotechnology Banasthali VidyapithRajasthan 304022India

Polycyclic aromatic hydrocarbon(PAH)pollution is a global concern because of their toxicity to environment and ecosystem,which induces adverse effects on plants,animals,and *** are mainly released from natural and anthropogenic activities,such as incomplete fuel combustion,leakages in oil pipelines,and the extensive use of pesticides;PAH contaminants include petroleum hydrocarbons(PHCs),halogenated hydrocarbons,chlorophenols,and *** using microorganisms such as bacteria and fungi is developing as an effective and promising technique to remediate PAHs from the *** to their remediation efficiency,this method is environmentally friendly and represents a novel approach for reducing the risk of PAHs to human health and the *** may be applied in bioremediation,and will not only induce fewer toxic effects but also reduce the effective overall time and costs *** article provides a summary of the application of nanomaterials,bacteria,and fungi to PAH remediation;we review and briefly discuss the structure,properties,sources,fate,toxicity,and remediation approaches involved in the remediation of PAH-polluted sites.

关键词： bioremediation microorganisms pesticides persistent organic pollutants petroleum hydrocarbons

Sarve:synthetic data and local differential privacy for private frequency estimation

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Cybersecurity 2022年第4期5卷 97-116页

作者： Gatha Varmal ritu Chauhan Dhananjay Singh Amity Institute of Information Technology Amity UniversityNoidaIndia Center for Computational Biology and Bioinformatics Amity UniversityNoidaIndia Department of Electronics Engineering HUFSSeoulKorea

The collection of user attributes by service providers is a double-edged *** are instrumental in driving statistical analysis to train more accurate predictive models like *** analysis of the collected user data includes frequency estimation for categorical ***,the users deserve privacy guarantees against inadvertent identity *** algorithms called frequency oracles were developed to randomize or perturb user attributes and estimate the frequencies of their *** propose Sarve,a frequency oracle that used Randomized Aggregatable Privacy-Preserving Ordinal Response(RAPPOR)and Hadamard Response(HR)for randomization in combination with fake *** design of a service-oriented architecture must consider two types of complexities,namely computational and *** functions of such systems aim to minimize the two complexities and therefore,the choice of privacy-enhancing methods must be a calculated *** variant of RAPPOR we had used was realized through bloom flters.A bloom filter is a memory-efficient data structure that offers time complexity of O(1).On the other hand,HR has been proven to give the best communication costs of the order of log(b)for b-bits ***,Sarve is a step towards frequency oracles that exhibit how privacy provisions of existing methods can be combined with those of fake data to achieve statistical results comparable to the original *** also implemented an adaptive solution enhanced from the work of Arcolezi et *** use of RAPPOR was found to provide better privacy-utility tradeoffs for specific privacy budgets in both high and general privacyregimes.

关键词： Synthetic data Differential privacy Frequency estimation Frequency oracle Privacy

Colon cancer and their targeting approaches through nanocarriers:A review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2023年第3期13卷 104-111页

作者： Richa Kumari Nitin Sharma ritu Karwasra Kushagra Khanna Department of Pharmaceutics ISF College of PharmacyFerozepur GT RoadMogaPunjab142001India Central Council for Research in Unani Medicine Ministry of AyushJanakpuriNew Delhi110058India Faculty of Pharmaceutical Science UCSI UniversityKualalumpur56000Malaysia

Colon cancer is the fifth most common type of cancer in the *** cancer develops when healthy cells in the lining of the colon or rectum alter and grow uncontrollably to form a mass known as a *** major medical improvements,colon cancer is still one of the leading causes of cancer-related mortality *** of the main issues of chemotherapy is toxicity related to conventional *** targeted delivery systems are considered the safest and most effective by increasing the concentration of a therapeutic substance at the tumor site while decreasing it at other ***,these delivery systems required lower doses for high therapeutic value with minimum side *** current review focuses on targeting therapeutic substances at the desired site using ***,the diagnostic applications of nanocarriers in colorectal cancer are also discussed.

关键词： Colon cancer Targeting approaches Chemotherapies Nanocarriers Gold nanoparticles Liposomes

Renin-angiotensin system blockers-SGLT2 inhibitorsmineralocorticoid receptor antagonists in diabetic kidney disease:A tale of the past two decades!

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Diabetes 2022年第7期13卷 471-481页

作者： Awadhesh Kumar Singh ritu Singh Department of Diabetes&Endocrinology G.D Hospital&Diabetes InstituteKolkata 700013West BengalIndia

Several pharmacological agents to prevent the progression of diabetic kidney disease(DKD)have been tested in patients with type 2 diabetes mellitus(T2DM)in the past two *** the exception of renin-angiotensin system blockers that have shown a significant reduction in the progression of DKD in 2001,no other pharmacological agent tested in the past two decades have shown any clinically meaningful ***,the sodium-glucose cotransporter-2 inhibitor(SGLT-2i),canagliflozin,has shown a significant reduction in the composite of hard renal and cardiovascular(CV)endpoints including progression of end-stage kidney disease in patients with DKD with T2DM at the top of reninangiotensin system blocker *** SGLT-2i,dapagliflozin,has also shown a significant reduction in the composite of renal and CV endpoints including death in patients with chronic kidney disease(CKD),regardless of T2DM *** positive findings on renal outcomes were recently reported as a top-line result of the empagliflozin trial in patients with CKD regardless of ***,the full results of this trial have not yet been *** the use of older steroidal mineralocorticoid receptor antagonists(MRAs)such as spironolactone in DKD is associated with a significant reduction in albuminuria outcomes,a novel non-steroidal MRA finerenone has additionally shown a significant reduction in the composite of hard renal and CV endpoints in patients with DKD and T2DM,with reasonably acceptable side effects.

关键词： Renin-angiotensin system blockers SGLT-2 inhibitors Mineralocorticoid receptor antagonist Diabetic kidney disease Chronic kidney disease Renal outcomes Cardiovascular outcomes

Synthetic biology techniques to tackle heavy metal pollution and poisoning

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Synthetic and Systems Biotechnology 2022年第3期7卷 841-846页

作者： Adithi Somayaji Soumodeep Sarkar Shravan Balasubramaniam ritu Raval Department of Biotechnology Manipal Institute of TechnologyManipal Academy of Higher EducationManipalIndia Manipal BioMachines Manipal Institute of TechnologyManipal Academy of Higher EducationManipalIndia

The requirement for natural resources and energy increases continually with the increase in *** inevitable result of this is soil,water,and air pollution with diverse pollutants,including heavy *** Biology involves using modular,interchangeable biological parts,devices in standard chassis or whole organisms to achieve a programmed result that can be quantified and optimized till it meets the required *** makes synthetic biology techniques very popular to tackle pressing global issues such as heavy metal *** review aimed to highlight various advancements as well as benefits,risks,and problems in synthetic biology techniques for detection,bioaccumulation,and biosorption of various heavy metals using engineered *** found that while such an approach is cost-effective,accessible,and efficient,there are several inherent technological and ethical issues including but not limited to metabolic burden and consequences of use of genetically modified organisms *** these hurdles will probably take time and innumerable conversations,and should be done through education and a culture of responsible research,rather than enforcing restrictions on the development of synthetic biology.

关键词： Heavy metals Biosensors Bioremediation Synthetic biology Responsible research

Relook at DPP-4 inhibitors in the era of SGLT-2 inhibitors

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Diabetes 2022年第6期13卷 466-470页

作者： Awadhesh Kumar Singh ritu Singh Department of Diabetes&Endocrinology G.D Hospital&Diabetes InstituteKolkata 700013West BengalIndia

SGLT-2 inhibitors(SGLT-2Is)have significantly improved cardio-renal outcomes and are preferred agents in people with cardiovascular diseases,heart failure,and diabetic kidney ***,GLP-1 receptor agonists(GLP-1RAs)have significantly improved atherosclerotic cardiovascular *** this end,DPP-4 inhibitors(DPP-4Is)are cardiac-neutral *** long-acting GLP-1RAs have shown a favorable HbA1c lowering compared to DPP-4Is,there is no clinically meaningful HbA1c lowering difference between SGLT-2Is vs ***,the glucose-lowering potential of SGLT-2Is gets compromised with a progressive decline in renal functions,unlike ***,the HbA1c lowering potential of DPP-4Is is favorable in people with T2DM having a modest baseline HbA1c(8.0%-8.5%)compared with SGLT-2Is which lowers HbA1c larger in a background of higher baseline HbA1c(>8.5%-9.0%).These findings suggest that the role of DPP-4Is in the management of type 2 diabetes mellitus cannot be completely ignored even in the era of SGLT-2Is.

关键词： DPP-4 inhibitors SGLT-2 inhibitors GLP-1 receptor agonists Cardiovascular outcomes Renal outcomes

Metabolic and cardiovascular benefits with combination therapy of SGLT-2 inhibitors and GLP-1 receptor agonists in type 2 diabetes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Cardiology 2022年第6期14卷 329-342页

作者： Awadhesh Kumar Singh ritu Singh Department of Diabetes and Endocrinology G.D Hospital and Diabetes InstituteKolkata 700013India Department of Reproductive Endocrinology G.D Hospital and Diabetes InstituteKolkata 700013India

Both GLP-1 receptor agonists(GLP-1RA)and SGLT-2 inhibitors(SGLT-2I)are newer classes of anti-diabetic agents that lower HbA1c moderately and decrease body weight and systolic blood pressure(SBP)*** therapy with GLP-1RA plus SGLT-2I have shown a greater reduction in HbA1c,body weight,and SBP compared to either agent alone without any significant increase in hypoglycemia or other side *** several agents from each class of these drugs have shown an improvement in cardiovascular(CV)and renal outcomes in their respective cardiovascular outcome trials(CVOT),combination therapy is theoretically expected to have additional CV and renal *** this comprehensive opinion review,we found HbA1c lowering with GLP-1RA plus SGLT-2I to be less than additive compared to the sum of HbA1c lowering with either agent alone,although body weight lowering was nearly additive and the SBP lowering was more than *** additional meta-analysis of CV outcomes with GLP1RA plus SGLT-2I combination therapy from the pooled data of five CVOT found a similar reduction in three-point major adverse cardiovascular events compared to GLP-1RA or SGLT-2I alone,against ***,a greater benefit in reduction of heart failure hospitalization with GLP-1RA plus SGLT-2I combination therapy was noted in the pooled meta-analysis of two randomized controlled *** adequately powered trials can confirm whether additional CV or renal benefit is truly exerted by GLP-1RA plus SGLT-2I combination therapy.

关键词： GLP-1 receptor agonists SGLT-2 inhibitors Combination therapy,Metabolic outcomes Cardiovascular outcomes Renal outcomes

Environmental hypoxia:A threat to the gonadal development and reproduction in bony fishes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Aquaculture and Fisheries 2022年第5期7卷 572-582页

作者： Nirmalendu Saha Debaprasad Koner ritu Sharma Biochemical Adaptation Laboratory Department of ZoologyNorth-Eastern Hill UniversityShillong793022India

Vast stretches of open water bodies are gradually becoming hypoxic as a result of depletion of oxygen levels mainly due to various human anthropogenic *** problem of hypoxic stress on the fish population is likely to be exacerbated soon since the aquatic hypoxic environment is continuously spreading over vast areas *** recent years,various harmful effects of hypoxia to bony fishes have been reported,such as the restriction of energy-consuming metabolic processes,arrest of the growth of ovary and testes that are associated with endocrine disruption,loss of sperm and egg quality,inhibition of fertilization,hatching success,and also the reduction of larval survivability,thereby impairment of overall reproductive and developmental processes in *** of the brain-pituitary-gonad axis,and certain enzymes related to steroidogenesis and vitellogenesis in fish have also been reported as the primary targets for an endocrine malfunction during ***-sensitive downregulation of key genes responsible for controlling sex hormones’synthesis has been documented in certain bony ***,continuous exposure to hypoxia was reported to induce early expression of pro-apoptotic/tumor suppressor p53 genes,thereby causing immense cell death in hypoxic ***,the cellular responses to long-term hypoxia exposure and the degree of reproductive impairments in bony fishes are still not adequate to figure out the actual underlying *** present review intends to highlight the current knowledge about the detrimental impact of chronic/acute hypoxia at different stages of fish reproduction and the associated underlying molecular mechanisms.

关键词： Sex hormones Endocrine disruption Gametogenesis Gonadal development Fish reproduction HPG-Axis