检索结果-南通市图书馆

Electrochemical treatment of olive mill wastewater:Treatment extent and effluent phenolic compounds monitoring using some uncommon analytical tools

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2013年第1期25卷 220-230页

作者： Chokri Belaid Moncef Khadraoui salma Mseddi Monem Kallel Boubaker Elleuch Jean Franois Fauvarque Laboratory of Water Energy and Environment Sfax UniversityENIS BP "1173" 3038 Sfax Tunisia Laboratory of Industrial Electrochemistry CNAM 2 Rue Conté 75003 Paris France

Problems related with industrials effluents can be divided in two parts：（1） their toxicity associated to their chemical content which should be removed before discharging the wastewater into the receptor media; （2） and the second part is linked to the difficulties of pollution characterisation and monitoring caused by the complexity of these matrixes. This investigation deals with these two aspects, an electrochemical treatment method of an olive mill wastewater （OMW） under platinized expanded titanium electrodes using a modified Gl＂ignard reactor for toxicity removal as well as the exploration of the use of some specific analytical tools to monitor effluent phenolic compounds elimination. The results showed that electrochemical oxidation is able to remove/mitigate the OMW pollution. Indeed, 87% of OMW color was removed and all aromatic compounds were disappeared from the solution by anodic oxidation. Moreover, 55% of the chemical oxygen demand （COD） and the total organic carbon （TOC） were reduced. On the other hand, UV- Visible spectrophotometry, Gaz chromatography/mass spectrometry, cyclic voltammetry and 13C Nuclear Magnetic Resonance （NMR） showed that the used treatment seems efficaciously to eliminate phenolic compounds from OMW. It was concluded that electrochemical oxidation in a modified Grignard reactor is a promising process for the destruction of all phenolic compounds present in OMW. Among the monitoring analytical tools applied, cyclic voltammetry and 13C NMR are among the techniques that are introduced for the first time to control the advancement of the OMW treatment and gave a close insight on polyphenols disappearance.

关键词： olive mill wastewater electro-oxidation polyphenols cyclic voltammetry GC/MS 13C NMR

Effect of pollution on DNA damage and essential fatty acid profile in Cirrhinus mrigala from River Chenab

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

Chinese Journal of Oceanology and Limnology 2017年第3期35卷 572-579页

作者： Bilal HUSSAIN Tayyaba SULTANA salma SULTANA K.A.AL-GHANIM Shahid MAHBOOB Department of Zoology Government College University Department of Zoology College of Science King Saud University

The objective of this study was to evaluate the effect of anthropogenic pollution on DNA damage and the fatty acid profile of the bottom dweller fish （Cirrhinus mr^gala）, collected from the River Chenab, in order to assess the effect of the toxicants on the quality of the fish meat. The levels ofCd, Hg, Cu, Mn, Zn, Pb, Cr and Sn and of phenols from this river were significantly higher than the permissible limits set by the USEPA. Comet assays showed DNA damage in Cirrhinus mr^gala collected from three different sampling sites in the polluted area of the river. Significant differences were observed for DNA damage through comet assay in fish collected from polluted compared to control sites. No significant differences were observed for DNA damage between farmed and fish collected from upstream. The micronucleus assay showed similar trends. Fish from the highly polluted sites showed less number of fatty acids and more saturated fatty acids in their meat compared to fish from less polluted areas. Several fatty acids were missing in fish with higher levels of DNA in comet tail and micronucleus induction. Long-chain polyunsaturated fatty acids, eicosapentaenoic acid （20：5n-3） was found missing in the fish from polluted environment while it was found in considerable amount in farmed fish 7.8±0.4%. Docosahexaenoic acid （22：6n-3） also showed significant differences as 0.1±0.0 and 7.0±0.1% respectively, in wild polluted and fanned fishes.

关键词： habitat fish comet assay micronucleus assay fatty acids

Fortifying Healthcare Data Security in the Cloud:A Comprehensive Examination of the EPM-KEA Encryption Protocol

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

Computers, Materials & Continua 2024年第5期79卷 3397-3416页

作者： Umi salma Basha Shashi Kant Gupta Wedad Alawad SeongKi Kim Salil Bharany Computer Science and Information Technology Jazan UniversityJazanSaudi Arabia CSE Eudoxia Research UniversityNew CastleUSA Department of Information Technology College of Computer ScienceQassim UniversityBuraydahSaudi Arabia National Center of Excellence in Software Sangmyung UniversitySeoulKorea Department of Computer Science and Engineering Lovely Professional UniversityPhagwaraPunjabIndia

A new era of data access and management has begun with the use of cloud computing in the healthcare *** the efficiency and scalability that the cloud provides, the security of private patient data is still a majorconcern. Encryption, network security, and adherence to data protection laws are key to ensuring the confidentialityand integrity of healthcare data in the cloud. The computational overhead of encryption technologies could leadto delays in data access and processing rates. To address these challenges, we introduced the Enhanced ParallelMulti-Key Encryption Algorithm (EPM-KEA), aiming to bolster healthcare data security and facilitate the securestorage of critical patient records in the cloud. The data was gathered from two categories Authorization forHospital Admission (AIH) and Authorization for High Complexity *** use Z-score normalization forpreprocessing. The primary goal of implementing encryption techniques is to secure and store massive amountsof data on the cloud. It is feasible that cloud storage alternatives for protecting healthcare data will become morewidely available if security issues can be successfully fixed. As a result of our analysis using specific parametersincluding Execution time (42%), Encryption time (45%), Decryption time (40%), Security level (97%), and Energyconsumption (53%), the system demonstrated favorable performance when compared to the traditional *** suggests that by addressing these security concerns, there is the potential for broader accessibility to cloudstorage solutions for safeguarding healthcare data.

关键词： Cloud computing healthcare data security enhanced parallel multi-key encryption algorithm(EPM-KEA)

Molecular methods for colorectal cancer screening:Progress with next-generation sequencing evolution

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 Gastrointestinal Oncology 2023年第3期15卷 425-442页

作者： salma Abbes Simone Baldi Hayet Sellami Amedeo Amedei Leila Keskes Laboratory of Parasitic and Fungal Molecular Biology University of SfaxSfax 3029Tunisia Department of Experimental and Clinical Medicine University of FlorenceFlorence 50134Italy Drosophila Research Unit-Parasitology and Mycologie Laboratory University of SfaxSfax 3029Tunisia SOD of Interdisciplinary Internal Medicine Careggi University HospitalFlorence 50134Italy Laboratory of Human Molecular Genetic University of SfaxSfax 3029Tunisia

Currently,colorectal cancer(CRC)represents the third most common malignancy and the second most deadly cancer worldwide,with a higher incidence in developed *** other solid tumors,CRC is a heterogeneous genomic disease in which various alterations,such as point mutations,genomic rearrangements,gene fusions or chromosomal copy number alterations,can contribute to the disease ***,because of its orderly natural history,easily accessible onset location and high lifetime incidence,CRC is ideally suited for preventive intervention,but the many screening efforts of the last decades have been compromised by performance limitations and low penetrance of the standard screening *** advent of next-generation sequencing(NGS)has both facilitated the identification of previously unrecognized CRC features such as its relationship with gut microbial pathogens and revolutionized the speed and throughput of cataloguing CRC-related genomic ***,in this review,we summarized the several diagnostic tools used for CRC screening in the past and the present,focusing on recent NGS approaches and their revolutionary role in the identification of novel genomic CRC characteristics,the advancement of understanding the CRC carcinogenesis and the screening of clinically actionable targets for personalized medicine.

关键词： Colorectal cancer Gut microbiota Colorectal cancer screening Next-generation sequencing

New Bi-metallic Single Source Precursors for the Deposition of Thin Films of Semiconductor Ceramics

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2007年第2期23卷 196-200页

作者： U.salma M.Mazhar J.I.Akhter Z.Ali Department of Chemistry Quaid-i-Azam UniversityIslamabad 45320Pakistan Physics Division Pakistan Institute of Nuclear Science and TechnologyP.O.NiloreIslamabadPakistan

Stable binary single source precursors （SSP） for the deposition of thin films of ceramic semiconductors of composition SnO·GeO were synthesized by close circuit chemical vapour deposition （CCCVD） method. Elemental analysis and spectroscopic techniques were used to characterize the precursors. Scanning electron microscopy （SEM） and energy dispersive spectroscopy （EDS） were employed to characterize the thin films. Resistivity measurements were conducted to show that the films are of semiconducting nature.

关键词： Single source precursors CCCVD Organotin carboxylates

Implication of Oil Trade in Sino-sudanese Relation,2000-2015

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

Implication of Oil Trade in Sino-sudanese Relation,2000-2015

作者： salma Ali Saeed Abdallah 山东大学

学位级别：硕士

Without any question,China’s global out-play,particularly her incursion into the African continent dominates as one of the most discussed topics in 21st-century International *** and more,China’s built bilateral relationships continue to generate attention,fame,and interestingly *** Africa,China’s grown engagements with Sudan,particularly the oil dealings presents one of the most controversial,problematic,and attention-drawing bilateral engagement of the 21st century ridden with many views and especially assumptions that leave many questions to be *** these quick assumptions,it is imperative to understand the true dynamics and implications of the oil trade aspect of these relations to both parties,especially Sudan the obvious weak ***,this research seeks to probe into the real implications and conditions of the oil trade to the overall Sino-Sudanese *** view of this,this research employs the interdependence theory coupled with the qualitative method of research,while drawing its sources from books,chapters,journals,news,and online sources to understand this unique South-South *** finds that notwithstanding the quick assumptions,there is more to the Sino-Sudanese oil *** being built around a global interdependence structure and developed mutual vulnerabilities which have forced Sino-Sudanese oil dealings,indications point that the oil dealings have been not only negative but also massively productive with multi-sectoral implications for both China and particularly Sudan albeit the full potentials being inhibited by a number of man-made and natural *** all,it holds the potentials of aiding or ruining the wider Sino-Sudan ***,towards achieving an improved oil engagement,this thesis enjoins a reform of the core structures and workings in the Sudanese oil industry detailing on strengthening the mechanisms of accountability,monitoring and regulation,while mak

关键词：石油贸易中苏关系经济增长

A NovelMethod for Determining Tourism Carrying Capacity in a Decision-Making Context Using q−Rung Orthopair Fuzzy Hypersoft Environment

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2024年第2期138卷 1951-1979页

作者： salma Khan Muhammad Gulistan NasreenKausar Seifedine Kadry Jungeun Kim Department of Mathematics and Statistics Hazara UniversityMansehra21120Pakistan Department of Mathematics Faculty of Arts and SciencesYildiz Technical UniversityEsenlerIstanbul34210Turkey Department of Applied Data Science Noroff University CollegeKristiansand4612Norway Artificial Intelligence Research Center(AIRC) Ajman UniversityAjman346United Arab Emirates Department of Electrical and Computer Engineering Lebanese American UniversityP.O.Box 13-5053ByblosLebanon Department of Software and CMPSI Konju National UniversityCheonan31080Korea

Tourism is a popular activity that allows individuals to escape their daily routines and explore new destinations for various reasons,including leisure,pleasure,or business.A recent study has proposed a unique mathematical concept called a q−Rung orthopair fuzzy hypersoft set(q−ROFHS)to enhance the formal representation of human thought processes and evaluate tourism carrying *** approach can capture the imprecision and ambiguity often present in human *** the advanced mathematical tools in this field,the study has also incorporated the Einstein aggregation operator and score function into the q−ROFHS values to supportmultiattribute decision-making *** implementing this technique,effective plans can be developed for social and economic development while avoiding detrimental effects such as overcrowding or environmental damage caused by tourism.A case study of selected tourism carrying capacity will demonstrate the proposed methodology.

关键词： q−Rung orthopair fuzzy hypersoft set decision-making tourism carrying capacity aggregation operator

Characterization of antioxidant and antibacterial compounds from aerial parts of Haplophyllum tuberculatum

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Bioresources and Bioproducts 2022年第1期7卷 52-62页

作者： salma Salim Al-Saeghi Mohammad Amzad Hossain Salem Said Jaroof Al-Touby School of Pharmacy College of Pharmacy and NursingUniversity of NizwaP.O.Box 33Postal Code 616NizwaOman School of Nursing College of Pharmacy and NursingUniversity of NizwaP.O.Box 33Postal Code 616NizwaOman

The aerial parts of Haplophyllum tuberculatum(***)have traditionally been used by local communities to treat fever,gastrointestinal disorders,worms,malaria and fractures,how-ever,the responsible ingredients of the selected medicinal plant have not been *** the present study,antibacterial and antioxidant ingredients were isolated and characterized from the plant parts of locally grown ***,and their biological activity was *** powder aerial parts were extracted with methanol and the extract was successively frac-tionated with different polarities of *** polarities of extracts(hexane,chloroform,ethyl acetate,butanol,methanol and water)were used to determine their antibacterial and antioxi-dant activity by established in-vitro *** disk diffusion and free radical scavenging 2,2-diphenyl-1-picrylhydrazyl(DPPH)methods were used to evaluate antibacterial and antioxidant activities of the prepared extracts and pure isolated compounds at different concentrations against three strains of Gram-positive and three Gram-negative *** antibacterial activity results showed that all prepared fractions and isolated pure compounds of the plant species gave signif-icant activity against all Gram(+and-)bacterial strains with the range of inhibition 0-20 *** antioxidant activity of the prepared extracts at all concentrations also showed substantial *** on the highest activity,ethyl acetate and chloroform extracts were selected for the separation and isolation of antioxidant and antibacterial compounds by thin layer chromatogra-phy(TLC),column chromatography(CC),and preparative thin layer chromatography(PTLIC).The structure of the isolated antioxidant and antibacterial compounds from the ethyl acetate and chloroform extracts were determined on the basis of nuclear magnetic resonance(NMR)and mass *** isolated pure compounds and active extracts could be used as a medicine for various infectious related di

关键词： H.tuberculatum Soxhlet extraction Antioxidant activity Antibacterial activity Chromatography Pure compound

Predicting the effectiveness of protected areas of Natura 2000 under climate change

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ecological Processes 2019年第1期8卷 162-182页

作者： Mst.Umme salma Nila Carl Beierkuhnlein Anja Jaeschke Samuel Hoffmann Md Lokman Hossain Global Change Ecology International Elite Study ProgrammeUniversity of BayreuthUniversitätsstraße 3095447 BayreuthGermany Department of Biogeography University of BayreuthUniversitätsstraße 3095447 BayreuthGermany Department of Geography Hong Kong Baptist University15 Baptist University RoadKowloon TongHong Kong Department of Environmental Protection Technology German University Bangladesh1702 GazipurBangladesh.

Background:Protected areas(PAs)are aimed to hold the environmental conditions that facilitate species and ecosystems to *** can become climatically unsuitable and unable to sustain their current number of species under climate *** Natura 2000(N2K)is the largest coordinated conservation tool assigned to maintain the long-term survival of Europe’s most significant species and *** attempting to understand the effectiveness of PAs in the face of climate change scenarios,we tested two hypotheses:(1)PAs in the Alpine and the Boreal biogeographical regions will experience more newly emerged climate conditions(hotter and drier)compared to the climate representation of other biogeographical regions under future climate in Europe and(2)PAs in the Mediterranean and the Continental biogeographical regions will face more consistency in climate conditions due to less area of disappearing and novel climate in ***:Current climate data(1960–1990)and projections for 2050 and 2070 of PAs of N2K were extracted from WorldClim global climate *** components analysis(PCA)was performed to construct climate space for the PAs across the biogeographical regions based on 19 climatic variables assessed at 5-km *** 10.1 was used to map the location of the novel and disappearing ***:PAs in the Alpine region will experience more novel climate conditions in the future compared to other biogeographical *** future projections showed that 17.70%of the PAs in the Alpine region will experience novel climate by *** climate consistency was observed in the PAs in the Continental region compared to the other biogeographical *** results showed that about 176 km2 of the selected PAs in the Continental region will face new emerging climate,while about 110 km2 will disappear under RCP 8.5 *** prediction also revealed that in the Mediterranean region 08 PAs will experience novel climate and 786 km2 areas

关键词： Biodiversity conservation Biogeographical region Climate change Climate scenarios Natura 2000,Protected areas