Volume 30, Number 2 (2019)

by

 

 

 

Synthesis, characterization and antibacterial susceptibility testing of manganese complexes of doxycyline with bipyridine and phenanthroline
Joshua A. OBALEYE and Olufunso O. ABOSEDE » Download full version

Adsorptive, inhibitive and thermodynamics studies on the corrosion of mild steel in the presence of Mangifera indica gums
Habibat F. CHAHUL, Elijah MAJI, and Tanko B. DANAT» Download full version

Assessing lead mobility rate from spent corroded and non-corroded bullets fragments on different soil types of tropical ecosystems
Effiong Ukorebi ETIM » Download full version

Phytochemical screening, thin-layer chromatography and antimicrobial activity study of Parquetina nigrescens leaf extracts
Sunday Ogakwu ADOGA, Deborah Ehikowoicho EKLE, Barnabas Aloo KYENGE, Terka Ogo-Oluwa AONDO, and Chris Oche IKESE» Download full version

Antidiabetic, antioxidant and in silico studies of bacterial endosymbiont inhabiting Nephelium lappaceum L.
Sridevi CHIGURUPATI, Shantini VIJAYABALAN, Arunkumar KARUNANIDHI, Kesavanarayanan KRISHNAN SELVARAJAN, Sitansu Sekhar NANDA, and Raghunath SATPATHY» Download full version

Occurrence and risk assessment of phenolic endocrine disrupting chemicals in shallow groundwater resource from selected Nigerian rural settlements
Onyekachi ONYEKWERE, Chioma Joy OKONKWO, Azubuike Bright OKOROAFOR, and Chinedu Joseph OKONKWO» Download full version

Quality assessment of tiger nut milk fortified with Moringa oleifera seed powder
Aanuoluwa R. OSALONI, Charles O. ARIJENIWA, Sunday O. BADA, and Elliot O. SEYIFUNMI» Download full version

Evaluation of the effect of a modified proprietary poultry feed on cholesterol excretion in laying birds
Chris Oche IKESE, Simon Terver UBWA, Sunday Ogakwu ADOGA, Stephen Inegedu AUDU, and Michael AKOR » Download full version

Performance evaluation of a formulated infant food on some biological indices in Wistar rats
Chris Oche IKESE, Simon Terver UBWA, Peter Agorye ADIE, Steven Inegedu AUDU, and Godwin EJEKE» Download full version

Study of the influence of alcohols addition to gasoline on the distillation curve, and vapor pressure
Irina NIŢĂ, Elis GEACAI, Sibel OSMAN, and Olga IULIAN » Download full version

 

Volume 30, Number 1 (2019)

by

Identification of the main dyestuffs obtained from Kermes (Kermes vermilio) in the Northwest of Turkey
Serap AYAZ SEYHAN, Cağlar DEMİRBAĞ, and Emre DÖLEN » Download full version

QSAR studies on imidazoles and sulfonamides as antidiabetic agents
Veerasamy RAVICHANDRAN and Rajak HARISH » Download full version

Influence of Cissus populnea stem extract on kinetics and thermodynamics of mild steel corrosion in acidic medium
Habibat F. CHAHUL,David T. ORHEMBA, and Taiwo A. GBADAMOSI » Download full version

Prevalence of infections with Clostridium difficile on potential pathology groups
Traian TACHE, Răzvan CHIRICĂ, Marius-Daniel RADU, Gabriela GEGIU, and Sorin RUGINĂ» Download full version

AmpC beta-lactamase enzymes are ubiquitous in catfish (Clarias gariepinus) cultured in the Nigerian catfish grow out pond systems
Faith I. AKINNIBOSUN and Odaro S. IMADE» Download full version

Batch washing of lead contaminated and spiked soils using extracts of dried Terminalia mantaly, Panicum maximum and Eleusine indica plants
Effiong Ukorebi ETIM» Download full version

The determination of polycyclic aromatic hydrocarbons in some foods from industrialized areas in South Eastern Nigeria: human health risk impact
Uchechi Bliss ONYEDIKACHI, Chuka Donatus BELONWU, and Mattew Owhonda WEGWU» Download full version

Influence of extraction method on antioxidant properties of Rheum ribes root extract
Dilek BILGIC ALKAYA, Serap AYAZ SEYHAN, and Busra Nagihan OZTURK» Download full version

Assessing the progression of metal concentrations in plastic components and printed wiring boards of end-of-life mobile cell phones
Gilbert Umaye ADIE, Aminat ADETAYO-BALOGUN, and Chidiebere Mmaduka AGUDOSI» Download full version

Influence of manufacturing temperature on the rheological behavior of some vegetable lubricating greases
Cyrille Alode VODOUNON,  Ancaelena Eliza STERPU, Iuliana Marlena PRODEA, and Claudia Irina KONCSAG» Download full version

The evaluation of kinetic parameters for cadmium doped Co-Zn ferrite using thermogravimetric analysis
Akshay B. KULKARNI, Shridhar N. MATHAD, and Raghavendra P. BAKALE» Download full version

Chemical composition, proximate and phytochemical analysis of Irvingia gabonensis and Irvingia wombolu peels, seed coat, leaves and seeds
Nkoli Marynnn MGBEMENA, Ifenna ILECHUKWU, Felicia Uchechukwu OKWUNODOLU, Joe-Vera Ogugua CHUKWURAH, Isioma Blessing LUCKY » Download full version

Volume 29, Number 2 (2018)

by

 

Lipid composition of raw and cooked Rapana venosa from the Black Sea
Albena MERDZHANOVA, Veselina PANAYOTOVA, * Diana A. DOBREVA, Rostitsa STANCHEVA,
and Katya PEYCHEVA » Download full version

The revised potential – pH diagram for Pb – H2O system
Pavel Anatolyevich NIKOLAYCHUK » Download full version

Effect of different treatment on the proximate and antinutritional content of Nigerian cashew apple residue
Faith Iguodala AKINNIBOSUN and Adedayo Michael OYETAYO» Download full version

Isolation and characterization of hydrocarbon-degrading fungi from OgbeIjoh oil creek, Warri, Delta State, Nigeria
Faith Iguodala AKINNIBOSUN and Abigail ASHEGBARE» Download full version

Examining toxic metals contamination, speciation and geochemistry of soil impacted by open disposal of waste cathode ray tubes in Nigeria
Paschal Okiroro INIAGHE,  and Gilbert Umaye ADIE» Download full version

Spectrophotometric determination of metoclopramide medicine in bulk formand in pharmaceuticals using orcinol as reagent
Hanaa Khazal Abdulghareeb TAHA, Mohauman Mohammed AL-RUFAIE, and Zahraa Yosif MOTAWEQ» Download full version

Synthesis, antimalarial activity, and docking studies of monocarbonyl analogues of curcumin
Amina S. YUSUF, Ibrahim SADA, Yusuf HASSAN ,Temitope O. OLOMOLA, Christiana M. ADEYEMI, and Sunday O. AJIBADE» Download full version

Design, synthesis and evaluation of anti-inflammatory, analgesic and antibacterial activity of 2, 4, 6-trisubstituted quinazoline derivatives
Nivrati JAIN, Harshita JAIN, Ashish JAIN, Veerasamy RAVICHANDRAN, and Prateek JAIN » Download full version

A thermometric study on the kinetics of the acid dissolution of aluminium in the presence of Napoleonaea imperialis seeds extract and iodide ions
Habibat Faith CHAHUL, Gloria Ihuoma NDUKWE, and David Ogwu OGWU » Download full version

Determination of essential and toxic elements, ascorbic acid content and color of different leaves in two cabbage varieties
Ana LEAHU, Cristina GHINEA, Mircea-Adrian OROIAN, and Cristina DAMIAN» Download full version

Summer profile of lipophilic toxins in shellfish from the Black Sea, Bulgaria
Zlatina PETEVA, Bernd KROCK, Stanislava GEORGIEVA, Anelia GERASIMOVA, Mona STANCHEVA and Lubomir MAKEDONSKI» Download full version

Synthesis and structural analysis of Ni0.45Cu0.55Mn2O4 by Williamson–Hall and size–strain plot methods
Shashidhargouda H. R.and Shridhar N. MATHAD» Download full version

Some quality parameters of mustards from the Romanian market
Cristina DAMIAN, Ana LEAHU, Sorina ROPCIUC, and Mircea-Adrian OROIAN» Download full version

Volume 29, Number 1 (2018)

by

 

A Study of the Toxicants and Biomarkers of Oxidative Stress in Samples from Ebubu and Elele-Alimini Communities in Rivers State
Charity OGUNKA-NNOKA, Kingsley ASSOR, Samuel ONUOHA, Peter AMADI » Download full version

Human health risk assessment of heavy metals in soils and commonly consumed food crops from quarry sites located at Isiagwu, Ebonyi State
Uchechi Bliss ONYEDIKACHI, Donatus Chuka BELONWU,  and Mattew Owhonda WEGWU » Download full version

Analgesic activity of newly synthesized 7-chloro–2–methyl-4H–benzo[d] [1,3]–oxazin–4–one and 3–amino-7-chloro-2–methyl-quinazolin-4(3H)–one
Peter O. OSARUMWENSE» Download full version

Evaluation of phytochemical components of various parts of Cola millenii K. Schum
Faith Iguodala AKINNIBOSUN and Bolorunduro Lanre ADEWUMI  » Download full version

Assessment of the levels of polychlorinated biphenyls in sediments of new Calabar River, Niger Delta Region, Nigeria
Ifenna ILECHUKWU, Nkoli M. MGBEMENA, Patience O. INAGBOR,
and Gloria I. NDUKWE » Download full version

Comparison of fatty acids, cholesterol, fat soluble vitamins and carotenoids content of skin and edible tissue of farmed African catfish (Clarias gariepinus, Burchell 1822)
Albena MERDZHANOVA, Diana A. DOBREVA, and Veselina PANAYOTOVA» Download full version

Volume 28, Number 2 (2017)

by

Seasonal variation and speciation of dissolved iron in an artificial surface water body
Semaghiul BIRGHILA, Georgiana BARONESCU, Anca DUMBRAVA* » Download full version

Performances of Shannon’s Entropy Statistic in Assessment of Distribution of Data
Lorentz JÄNTSCHI1 and Sorana D. BOLBOACĂ » Download full version

Assessment of the levels of polychlorinated biphenyls (PCBs) in Orogodo River sediments Agbor, Delta State, Nigeria
Oghenekohwiroro EDJERE and Osaro IYEKOWA » Download full version

Volume 28, Number 1 (2017)

by

Study of the refractive index of gasoline+alcohol pseudo-binary mixtures
Irina NITA, Elis GEACAI, Olga IULIAN, Sibel OSMAN* » Download full version

Chemosuppressive activities in in vivo studies of Plasmodium falciparum-infected
mice using isolated oil of Stigmaphyllon ovatum (Amazon vine) Cav.
Osaro IYEKOWA and Mary Olire EDEMA » Download full version

Synthesis and characterization of new chiral ketopinic acid-derived catalysts immobilized on polystyrene-bound imidazole
Yusuf HASSAN, Rosa KLEIN, Perry T. KAYE » Download full version

Pollutant bioaccumulation in anchovy (Engraulis encrasicolus) tissue, fish species of commercial interest at the Romanian Black Sea coast
Mădălina GALAŢCHI, Andra OROS, Valentina COATU, Mioara COSTACHE, Dragomir COPREAN, Liviu-Daniel GALAŢCHI » Download full version

Volume 27, Number 2 (2016)

by

Control of microbial contamination in drinking water from microfiltering dispensers by dialysis ultrafilters
Luca BOLELLI, Elida Nora FERRI, Stefano GIROTTI » Abstract » Download full version

Abstract preview

Abstract. – Tap water filtering devices are widely employed to improve odor and taste of tap water, or to obtain refrigerated or sparkling drinking water. The presence of disinfectants-resistant bacteria in tap water is responsible of the biofilm formation inside tubes and tanks. The consequent contamination of dispensed water is a well-known hygiene problem because of the quite constant presence of potentially pathogenic bacteria likes P. aeruginosa. In this study, we tested the technical feasibility and effectiveness of the addition to different commercial devices of a packaged polysulphone fibers filter. We aimed to find a simple solution to implement the quality of the delivered water. Water contamination levels were determined in a wide selection of microfiltered water dispensers and we selected among them a representative group of 10 devices, new or in use. The packaged ultrafilter was introduced in about half of them, to monitor, when possible, in parallel the contamination levels and flow rate of a couple of identical units, with and without the filter. The placement of the dialysis filters resulted feasible at different positions along the water circuits of the variously designed filtration units. Delivered water resulted completely free from bacteria when the filter was placed exactly at, or very close to, the outlet in spite of the inner surfaces contamination. This performance was not obtained in presence of a more or less long tract of water circuits downstream the ultrafilter: a significant but not complete reduction of the plate count numbers was observed. The filters worked in continue over the whole study period, ten months, showing exactly the same efficiency. Moreover, the flow rate in presence of the filter was quite unaffected. The addition of this kind of filter to already in use water dispensers was technically easy, and its use can be recommended in all cases a simple but reliable water sanitization is requested.

Keywords: water microfiltration devices; drinking water quality; sterile dialysis filters; P. aeruginosa.

Biomonitoring of coastal marine waters subject to anthropogenic use: development and application of the biosensor Mosselmonitor
Nadia B. BARILE, Mariaspina SCOPA, Sara RECCHI, Eliana NERONE » Abstract » Download full version
Abstract preview

Abstract. – The overall objective of this study was to develop a biological early warning system (Mosselmonitor®) on offshore platform to detect critical environmental situations. The experiment was conducted on oil off-shore platform called Rospo Mare B. This structure is located in the area in front of Molise coast line (Italy, Adriatic Sea), characterized by a depth of about 77 m and a bathymetry between 65 and 80 m. The Mosselmonitor® works with eight mussels connected via specific sensors to PC for recording opening values of valves. A probe was installed inside the instrument to daily control of water pH, dissolved oxygen, salinity and temperature. Water samples are weekly analyzed for heavy metals, organochlorine pesticide and suspended matter. During the entire observation period, closure alarms were predominantly detected (99.9%) and a decrease of 65% in alarms maximum duration was recorded from the fifth week. During the first month, none changes in water physicochemical parameters were observed so that affect the bivalves behavior. The only chemical parameter steadily detected in water was copper; its average concentrations were of 10 ppb. Detected alarms were not comparable to those recorded in the first month: this observation could be explained considering that mussels will be adapted to copper constant presence.

Keywords: Mosselmonitor®, biomonitoring, biosensor, mussel, anthropogenic areas, offshore platform.

Szeged Matrix Property Indices as Descriptors to Characterize Fullerenes
Lorentz JÄNTSCHI, and Sorana D. BOLBOACĂ » Abstract » Download full version  » Supplementary material

Abstract preview

Abstract. Fullerenes are class of allotropes of carbon organized as closed cages or tubes of carbon atoms. The fullerenes with small number of atoms were not frequently investigated. This paper presents a detailed treatment of total strain energy as function of structural feature extracted from isomers of C40 fullerene using Szeged Matrix Property Indices (SMPI). The paper has a two-fold structure. First, the total strain energy of C40 fullerene isomers (40 structures) was linked with SMPI descriptors under two scenarios, one which incorporate just the SMPI descriptors and the other one which contains also five calculated properties (dipole moment, scf-binding-energy, scf-core-energy, scf-electronic-energy, and heat of formation). Second, the performing models identified on C40 fullerene family or the descriptors of these models were used to predict the total strain energy on C42 fullerene isomers. The obtained results show that the inclusion of properties in the pool of descriptors led to the reduction of accurate linear models. One property, namely scf-binding-energy proved a significant contribution to total strain energy of C40 fullerene isomers. However, the top-three most performing models contain just SMPI descriptors. A model with four descriptors proved most accurate model and show fair abilities in prediction of the same property on C42 fullerene isomers when the approach considered the descriptors identified on C40 as the predicting descriptors for C42 fullerene isomers.

Keywords: nano structure-property relationship; C40 fullerene; C42 fullerene; Szeged Matrix Property Indices (SMPI).

 

Volume 27, Number 1 (2016)

by

COVER

TABLE OF CONTENTS

FIRST PAGES

INDEX OF AUTHORS

Original research articles

Nutritional evaluation of aquaculture mussels (M. galloprovincialis) from the Black Sea, Bulgaria
Albena MERDZHANOVA, Diana A. DOBREVA, Stanislava GEORGIEVA » Download full version

Investigation about the presence of organochlorine pollutants in mussels from the Black Sea, Bulgaria
Stanislava GEORGIEVA, Mona STANCHEVA, Lubomir MAKEDONSKI » Download full version

Lipase NS81006 immobilized on Fe3O4 magnetic nanoparticles for biodiesel production
Baskar THANGARAJ, Zhaohua JIA, Lingmei DAI, Dehua LIU, Wei DU » Download full version

The utilization of copper/zeolite as catalyst in the microwave-assisted synthesis of some novel sulfonamide derivatives
Selvakumar DINESHKUMAR, Ganesamoorthi THIRUNARAYANAN, Perumal MAYAVEL, Inbasekaran MUTHUVEL » Download full version

Clays valorization as corrosion inhibitors for E400 reinforcing steel
Diadioly GASSAMA, Modou FALL, Ismaïla YADE, Serigne Massamba SECK, Mababa DIAGNE, Mouhamadou Bassir DIOP » Download full version

Synthesis, characterization and evaluation of biological activities of some 2, 3-diaryl bicyclo methanones
Ganesamoorthy THIRUNARAYANAN » Download full version

Studies on poly-3-hydroxyoctanoate biosynthesis by a consortium of microorganisms
Mihaela Carmen EREMIA, Irina LUPESCU, Mariana VLADU, Maria PETRESCU, Gabriela SAVOIU, Amalia STEFANIU, Maria SPIRIDON » Download full version

Computational study on 3D structure of L-aspartic acid and L-glutamic acid: molecular descriptors and properties
Amalia STEFANIU, Valeria Gabriela SAVOIU, Irina LUPESCU, Olga IULIAN » Download full version

Electrochemical oxidation of salicylhydroxamic acid on Pt electrode
Nady HASHEM EL-SAYED and Eid EISSA SALAMA » Download full version

Preparation and evaluation of diclofenac sodium orally disintegrating tablets
Valeriu IANCU, Florentina RONCEA, Radu George CAZACINCU, Dumitru LUPULEASA » Download full version

Estimation of pressure drop in gasket plate heat exchangers
Anisoara-Arleziana NEAGU, Claudia Irina KONCSAG, Alina BARBULESCU, Elisabeta BOTEZ » Download full version

Volume 26, Number 2 (2015)

by

Cover

Authors index

Instructions to Authors

Contents

Regular articles

NMR detected metabolites in complex natural fluids. Quinic acid in apple juice
Gabriela Liliana AILIESEI, Mihaela CIOBANU, Mihaela BALAN, Cristina STAVARACHE, Lucica BARBES, Alina NICOLESCU, and Calin DELEANU » Download full version

Physico-chemical characterisation of some samples of fresh milk and milk powder
Alina SOCEANU, Viorica POPESCU and Simona DOBRINAS » Download full version

Photocatalytic study of organosilane-modified zinc oxide nanoparticles
Aurel TĂBĂCARU, Mariana BUȘILĂ, Viorica (GHISMAN) PLEȘCAN and Viorica MUȘAT » Download full version

Review articles

Analysis and classification of physical and chemical methods of fuel activation
Viktoriya FEDORCHAK and Taras FEDORCHAK » Download full version

Volume 26, Number 1 (2015)

by

Cover

Authors index

Instructions to Authors

Organochlorine contaminants (PCBs, DDTs, HCB & HBDE) in fish from the Lake Varna and Lake Beloslav, Bulgaria
Stanislava GEORGIEVA, Mona STANCHEVA and Lubomir MAKEDONSKI » Download full version

Analytical characterization of some pasteurized apple juices during storage
Cristina DAMIAN, Ana LEAHU, Mircea OROIAN and Sorina ROPCIUC » Download full version

Determination of caftaric acid in tincture and rose water obtained from Rosae damascenae flores
Antoanela POPESCU, Nicoleta MATEI, Florentina RONCEA, Horatiu MIRESANa and Georgeta PAVALACHE » Download full version

Comparison of heavy metal concentration of some marine fishes from Black and Aegean Seas
Lubomir MAKEDONSKI, Katya PEYCHEVA and Mona STANCHEVA » Download full version

Determination of loratadine in pharmaceuticals by a spectrophotometric method
Georgeta PAVALACHE, Nicoleta MATEI and Antoanela POPESCU » Download full version

Applications of a DAD-HPLC method for determination of loratadine on biological samples
Georgeta PAVALACHE, Nicoleta MATEI, Antoanela POPESCU and Verginica SCHRODER » Download full version

Cadmium and lead occurrence in soil and grape from Murfatlar Vineyard
Nicoleta MATEI, Antoanela POPESCU, Gabriel-Lucian RADU, Victoria ARTEM and Georgeta PAVALACHE » Download full version

Surface treatments applied on titanium implants
Sorin Cosmin COSMA, Nicolae BALC, Marioara MOLDOVAN and Cristina Ștefana MIRON-BORZAN » Download full version