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Cadmium bioaccumulation in three benthic fish species, Salaria basilisca, Zosterisessor ophiocephalus and Solea vulgaris collected from the Gulf of Gabes in Tunisia

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Journal of Environmental Sciences 2009年第7期21卷 980-984页

作者： BARHOUMI sana MESSAOUDI Imed DELI Tmim SAD Khaled KERKENI Abdelhamid Trace Elements Free Radicals Antioxidant Systems and Environment and Humain Pathology Faculty of Medicine 5000 Monastir Tunisia UR 09/30: Genetic and Biodiversity Institute of Biotechnology 5000 Monastir Tunisia

To select a marine teleost fish which can be used as a bioindicator of cadmium （Cd） pollution in the Gulf of Gabes in Tunisia, Cd concentrations in liver and gill were compared in three benthic fish species including Salaria basilisca, Zosterisessor ophiocephalus and Solea vulgaris. Fish samples were collected from three selected sites in the Gulf of Gabes, with different degrees of Cd contamination： the industrialized coast of Sfax （S 1）, the coast of Douar Chatt （S2） and the coast of Luza （S3）. The results shows that Cd concentrations in both sediment and water collected from S1 were significantly higher （t9 〈 0.0001） than those from S2 and S3. For each species, Cd concentrations, in both liver and gill, showed the decreasing order： S 1 〉 S2 〉 S3. The highest concentration of Cd was detected in the liver of S. basilisca, and only S. basilisca showed bioaccumulation factors （BAF） greater than 1 in all studied sites. In S 1 and S2, BAF values respect the following order： S. basilisca 〉 Z. ophiocephalus 〉 S. vulgaris. These results of significant bioaccumulation of Cd, in terms of hepatic concentrations and bioaccumulation factors, indicated that S. basilisca can be used as bioindicator to evaluate the evolution of Cd pollution in the Gulf of Gabes.

关键词： bioaccumulation cadmium Gulf of Gabes Salaria basilisca Solea vulgaris Zosterisessor ophiocephalus Tunisia

A mini-review on MXenes as versatile substrate for advanced sensors

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Chinese Chemical Letters 2020年第4期31卷 922-930页

作者： Razium Ali Soomro sana Jawaid Qizhen Zhu Zaheer Abbas Bin Xu Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China State Key Laboratory of Organic-Inorganic Composites Beijing Key Laboratory of Electrochemical Process and Technology for MaterialsBeijing University of Chemical TechnologyBeijing 100029China National Centre of Excellence in Analytical Chemistry University of SindhJamshoro 76080Pakistan

MXenes have emerged as versatile 2D materials that are already gaining paramount attention in the areas of energy,catalyst,electromagnetic shielding,and *** unique surface chemistry,graphene-like mo rphology,high hydrophilicity,metal-like conductivity with redox capability identifies MXenes,as an ideal material for surface-related *** short review summarizes the most recent reports that discuss the potential application of MXenes and their hybrids as a transducer material for advanced *** on the nature of transducing signals,the discussion is categorized into three sections,which include electrochemical(bio)sensors,gas sensors,and finally,electro-chemiluminescence&fluorescent *** review provides a concise summary of all the analytical merits obtained subsequent to the use of MXenes,followed by endeavors that have been made to accentuate the future perspective of MXenes in sensor devices.

关键词： MXenes Electrochemical sensors Gas sensors Electrochemiluminescent sensor Fluorescent sensors

Point-of-care ultrasound identifi cation of yolk stalk sign in a case of failed fi rst trimester pregnancy

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World Journal of Emergency Medicine 2018年第2期9卷 149-151页

作者： Josie Acuna sana Rukh Srikar Adhikari Department of Emergency Medicine University of Arizona Tucson Arizona USA University of Arizona College of Medicine Tucson Arizona USA

Emergency physicians are often the first providersto encounter patients with complications in earlypregnancy. Point-of-care （POC） pelvic ultrasound isbeing increasingly used in the evaluation of emergencydepartment （ED） patients with first trimester symptoms.[1]While the initial aim of POC ultrasound in this settingis to confirm an intrauterine pregnancy, a secondarygoal is to differentiate between a normal and abnormalpregnancy. There exist a number of sonographic featuresto suggest a pregnancy is non-viable.

关键词： Point-of-care ultrasound identifi cation of yolk stalk sign a case of failed first trimester pregnancy

Dramatic changes in anatomical traits of a C4 grass Chrysopogon serrulatus Trin.(Poaceae)over a 1000 m elevational gradient

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Journal of Mountain Science 2023年第5期20卷 1316-1335页

作者： FATIMA sana HAMEED Mansoor AHMAD Farooq AHMAD Muhammad Sajid Aqeel ANWAR Majid MUNIR Mahwish ASHRAF Muhammad SHAH Syed Mohsan Raza BASHARAT sana AHMAD Iftikhar KHALIL Sangam Department of Botany Government Sadiq College Women UniversityBahawalpur 53100Pakistan Department of Botany University of Agriculture FaisalabadFaisalabad 38040Pakistan Department of Pharmacy Riphah International University Lahore 53770Pakistan Institute of Molecular Biology and Genetic Engineering The University of LahoreLahore 53770Pakistan Department of Botany Division of Science and TechnologyUniversity of EducationLahore 53770Pakistan Department of Forestry Range&Wildlife ManagementThe Islamia University of BahawalpurBahawalpur 53100Pakistan

Chrysopogon serrulatus(false beard-grass)is a dominant component of vegetation in the foothills of the *** study whole plant morphology,individuals of *** were collected from three plots at each of six locations spanning from 400 to 1,400 *** population colonizing the highest elevation modifications in different plant *** showed increased metaxylem number and *** the stem,especially outside of the vascular tissue,there was intensive sclerification indicative of increased xeromorphy as a survival *** the highest elevation,leaves were wider;aerenchyma formation and increased sclerification were noted in the leaf sheath;and a greater proportion of storage parenchyma was observed in the leaf blade,all indicators of *** contrast,leaves at lower elevations had xeric morphological features such as increased epidermal thickness,sclerification and more developed metaxylem *** conclusion,shifting of morphological features in below-and above-ground plant parts of *** were linked to shifts in environmental factors along this elevation gradient,thus enabling the successful distribution of this species along this elevation gradient.

关键词： Adaptive component Storage parenchyma Sclerification Metaxylem Aerenchyma

Rapid and long-effective removal of broad-spectrum pollutants from aqueous system by ZVI/oxidants

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Frontiers of Environmental Science & Engineering 2020年第5期14卷 147-156页

作者： sana Ullah Xuejun Guo Xiaoyan Luo Xiangyuan Zhang Siwen Leng Na Ma Palwasha Faiz State Key Laboratory of Environment Simulation School of EnvironmentBeijing Normal UniversityBeijing 100875China Department of Environmental and Conservation Sciences University of SwatMingora 19200Pakistan

Zero-valent iron(ZVI)technology has recently gained significant interest in the efficient sequestration of a wide variety of ***,surface passivation of ZVI because of its intrinsic passive layer would lead to the inferior reactivity of ZVI and its lower efficacy in contaminant ***,to activate the ZVI surface cheaply,continuously,and efficiently is an important challenge that ZVI technology must overcome before its wide-scale *** date,several physical and chemical approaches have been extensively applied to increase the reactivity of the ZVI surface toward the elimination of broad-spectrum ***,these techniques have several limitations such as low efficacy,narrow working pH,eco-toxicity,and high installation *** objective of this mini-review paper is to identify the critical role of oxygen in determining the reactivity of ZVI toward contaminant ***,the effect of three typical oxidants(H2O2,KMnO4,and NaClO)on broad-spectrum contaminants removal by ZV1 has been documented and *** reaction mechanism and sequestration efficacies of the ZVI/oxidant system were evaluated and *** technical basis of the ZVI/oxidant approach is based on the half-reaction of the cathodic reduction of the *** oxidants commonly used in the water treatment industry,i.e.,NaClO,O3,and H2O2,can be served as an ideal coupling electron *** the combination of these oxidants,the surface corrosion of ZVI can be continuously *** ZVI/oxidants technology has been compared with other conventional technologies and conclusions have been drawn.

关键词： Zero-Valent Iron(ZVI) Oxidants Heavy Metals(HMs) Metalloids Nitrate,Phosphate

Do bovids evolve hindquarter markings for anti-predation?

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Current Zoology 2022年第2期68卷 143-148页

作者： Cong Yu Lixin CHEN Sihan NING sana ULLAH Zhongqiu LI Laboratory of Animal Behavior and Conservation School of Life SciencesNanjing UniversityNanjing 210023China Department of Zoology Division of Science and TechnologyUniversity of EducationLahore 54000Pakistan

Conspicuous coloration in animals serves many functions such as ***-predation strategies include motion dazzle and flash *** dazzle markings can reduce the probability of being preyed on because the predators misjudge their *** flash behavior,prey demonstrate conspicuous cue while fleeing;the predators follow them;however,the prey hide their markings and the predators assume that the prey has *** investigate whether bovids use conspicuous hindquarter markings as an anti-predatory behavior,we undertook phylogenetically controlled analyses to explore under what physiological characteristics and environmental factors bovids might have this color *** results suggested that rump patches and tail markings were more prevalent in bovids living in larger-sized groups,which supports the hypothesis of intraspecific ***,we observed the occurrence of conspicuous white hindquarter markings in bovids having smaller body size and living in larger groups,suggesting a motion dazzle ***,the feature of facultative exposing color patterns(flash markings)was not associated with body size,which was inconsistent with predictions and implied that bovids may not adopt this as an anti-predator *** was concluded that species in bovids with conspicuous white hindquarter markings adopt motion dazzle as an anti-predation strategy while fleeing and escaping from being prey on.

关键词： anti-predation bovid flash behavior hindquarter markings interspecies communication motion dazzle

Bi_(2)O_(3)/ZnO nanocomposite:Synthesis,characterizations and its application in electrochemical detection of balofloxacin as an antibiotic drug

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Journal of Pharmaceutical Analysis 2021年第1期11卷 57-67页

作者： sana Ansari M.Shahnawaze Ansari Soami P.Satsangee Rajeev Jain Department of Chemistry Dayalbagh Educational InstituteDayalbaghAgra282005India Center of Nanotechnology King Abdulaziz UniversityJeddah21589Saudi Arabia Advanced Membrane Technology Research Centre(AMTEC) Universiti Teknologi Malaysia81310SkudaiJohorMalaysia School of Chemical and Energy Engineering Universiti Teknologi Malaysia81310SkudaiJohorMalaysia School of Studies in Chemistry Jiwaji UniversityGwalior474011India

In the present work,a chemically modified electrode has been fabricated utilizing Bi_(2)O_(3)/ZnO *** nanocomposite was synthesized by simple sonochemical method and characterized for its structural and morphological properties by using XRD,FESEM,EDAX,HRTEM and XPS *** results clearly indicated co-existence of Bi_(2)O_(3) and ZnO in the nanocomposite with chemical interaction between ***_(2)O_(3)/ZnO nanocomposite based glassy carbon electrode(GCE)was utilized for sensitive voltammetric detection of an anti-biotic drug(balofloxacin).The modification amplified the electroactive surface area of the sensor,thus providing more sites for oxidation of *** and square wave voltammograms revealed that Bi_(2)O_(3)/ZnO modified electrode provides excellent electrocatalytic action towards balofloxacin *** current exhibited a wide linear response in concentration range of 150e1000 nM and detection limit of 40.5 nM was *** modified electrode offered advantages in terms of simplicity of preparation,fair stability(RSD 1.45%),appreciable reproducibility(RSD 2.03%)and *** proposed sensor was applied for determining balofloxacin in commercial pharmaceutical formulations and blood serum samples with the mean recoveries of 99.09% and 99.5%,respectively.

关键词： ZnO nanoparticles Chemically modified electrode Voltammetry Drug analysis

A Drone-Based Blood Donation Approach Using an Ant Colony Optimization Algorithm

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Computer Modeling in Engineering & Sciences 2023年第8期136卷 1917-1930页

作者： sana Abbas Faraha Ashraf Fahd Jarad Muhammad Shoaib Sardar Imran Siddique School of Mathematics Minhaj UniversityLahore54770Pakistan Department of Mathematics Cankaya UniversityEtimesgutAnkara06790Turkey Department of Medical Research China Medical University HospitalChina Medical UniversityTaichung40402Taiwan Department of Mathematics University of Management and TechnologyLahore54770Pakistan

This article presents an optimized approach of mathematical techniques in themedical domain by manoeuvring the phenomenon of ant colony optimization algorithm(also known as ACO).A complete graph of blood banks and a path that covers all the blood banks without repeating any link is required by applying the Travelling Salesman Problem(often TSP).The wide use promises to accelerate and offers the opportunity to cultivate health care,particularly in remote or unmerited environments by shrinking lab testing reversal times,empowering just-in-time lifesaving medical supply.

关键词： Network ant colony algorithm path complete graph blood banks drones travelling salesman problem

Optimization and Characterization of Combined Degumming Process of Typha angustata L. Stem Fibers

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Journal of Renewable Materials 2024年第6期12卷 1071-1086页

作者： sana Rezig Foued Khoffi Mounir Jaouadi Asma Eloudiani Slah Msahli Laboratory of Textile Engineering(LGTex) University of MonastirKsar Hellal5070Tunisia

Plant derived natural fibers have been widely investigated as alternatives to synthetic fibers in reinforcing *** over the years have explored many plant fibers using different extraction processes to study their physical,chemical,and mechanical *** this context,the present study relates to the extraction,characterization,and optimization of Typha angustata *** *** this purpose,desirability functions and response surface methodology were applied to simultaneously optimize the diameter(D),linear density(LD);yield(Y),lignin fraction(L),and tenacity(T)of Typha stem *** stems have been subjected to both alkali(NaOH)and enzymatic(pectinex ultra-SPL)*** levels of process variables including enzyme concentration(10,15,and 20 ml/L)and treatment duration(10,15,and 20 days)were used to design the experiments according to the factorial *** results were examined by analysis of variance and fitted to second order polynomial model using multiple regression *** Derringer’s desirability function released that the values of process variables generating optimized diameter,linear density,yield,lignin ratio and tenacity are 20 ml/L and 20 days for concentration of pectinex ultra-SPL enzyme and treatment duration,*** was performed and high degree of correlation was found between the experimental and statistical ***,the morphological structure has been investigated by the scanning electron microscope,showing a crenelated structure of ultimate fiber bundles of cellulose composing the Typha *** to Typha stem non-treated fibers(TSNTF),Typha stem combined treated fibers(TSCTF),brings to improve mechanical *** change in mechanical properties is affected by modifying the fiber structure showing alpha cellulose of(66.86%)and lignin ratio of(10.83%)with a crystallinity index of(58.47%).

关键词： Typha angustata L.stems fibers combined treatment optimization process desirability function chemical and physical properties morphological structure