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EURO CHEMISTRyCONGRESS

APRIL 02-03, 2020 | PARIS, FRANCE

Mercure Paris Charles De GaulleAirport & Convention

BP 20248 -Roissypôle Ouest -Route de la commune -95713

Roissy CDG Cedex

Venue

Dear Euro-Chemists and colleagues around the World!

Let me extend my warm greetings to all participants of the  “Euro Chemistry Congress” in Paris, France during April 02-03, 2020.

Our theme, “Novel Trends and Approaches in the field of Chemistry”, seems to be an ordinary duty for all natural scientists nowadays since the great modern chemistry with novel trends is everywhere around and inside us! Biochemistry, Nano-medicine, Catalysis and Organic Electronics develop like forest fire lighted up by incendiary quantum approaches. I hope that our Congress will shed new light on various branches of experimental and theoretical chemistry and wish you emotional and fruitful couple of days in spring Paris!

Boris MinaevHead of Chemistry and Nano-material Science Department,Bogdan Khmelnitsky National University in Cherkasy. The Honoured Scientist of UkraineProfessor Emeritus of the Royal Institute of Technology, Stockholm.

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This session involves open discussion between the experts and session attendees, it gives enough time for getting answers to specific questions and doubts. It is an opportunity for attendees to increase their professional networking, sometimes also leads to an excellent collaboration opportunity.

Analytical Chemistry | Agricultural Chemistry | Biochemistry | Chemistry of Transition Elements | Chemical Engineering | Electrochemistry | Environmental Chemistry | Food Chemistry | Forensic Chemistry | Geochemistry | Green Chemistry | Industrial Chemistry | Inorganic chemistry | Nanotechnology | Materials science | Medicinal Chemistry | Metallurgy | Molecular biology | Natural Product Chemistry | Neurochemistry | Organic Chemistry | Petrochemistry | Physical chemistry | Polymer chemistry | Radiochemistry

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GROUP PHOTO

LUNCH BREAK

COFFEE BREAK

COFFEE BREAK

ANALyTICAL CHEMISTRy

CHEMICAL ENGINEERING

AGRICULTURAL CHEMISTRy

ELECTROCHEMISTRy

BIOCHEMISTRy

ENVIRONMENTAL CHEMISTRy

CHEMISTRy OF TRANSITION ELEMENTS

FOOD CHEMISTRy

• Applications of analytical chemistry• Chromatography• Electrochemical analysis• Hybrid techniques related to

analytical Chemistry• Lab-on-a-chip• Mass spectrometry• Microscopy• Qualitative and quantitative analysis• Separation• Spectroscopy• Thermal analysis

• Etymology• Process design and analysis• Chemical reaction engineering,• Heat-transfer equipment• New concepts and innovations in

chemical Engineering• Nuclear engineering• Safety and hazard assessments• Separation columns (distillation,

absorption and extraction)

• Agricultural biotechnology• Technology and sustainable

agriculture best practices• Climate change impacts, mitigation

and adaptation• Renewable energy sources and

sustainable agriculture• Greenhouses and horticulture• Agricultural machinery• Fertilisers and chemicals• Irrigation and water management• Nanotechnologies in agriculture

• Bipolar electrochemistry• Electroanalytical method• Electrochemical energy conversion• Electrochemical engineering• Electrochemical impedance

spectroscopy• Electrochemical potential• Fuel cells• Nanoelectrochemistry• Photoelectrochemistry• Redox titration

• Biochemistry methods• Bioinorganic chemistry• Biology and pharmacology of

chemical elements• Chemical ecology• Chemical pathology• Clinical Biochemistry and Nutrition• Metabolisms• Neurochemistry• physiological biochemistry• Reagents for biochemistry

• Radiochemicals• Aquatic chemistry• Atmospheric chemistry• Bioassays and  immunoassay• Environmental measurement and

monitoring• Environmental monitoring• Environmental quality parameters

related to fresh water• Gravimetric, titrimetric and electro-

chemical methods• Pollution

• Characteristics of transition elements

• Electronic configuration• Chemical formula• Ligand binding• causes of colour compounds of

transition elements• complex compound formation• coordination complexes• transition metal Dinitrogen com-

plexes

• Food engineering• Food fortification• Food microbiology• Food packaging• Food physical chemistry• Food preservation• Food rheology• Food safety• Food science• Food storage• Food supplements• Food technology

FORENSIC CHEMISTRy GEOCHEMISTRy GREEN CHEMISTRy INDUSTRIAL CHEMISTRy• Ballistic fingerprinting• Bloodstain pattern analysis• Encompasses organic and inorganic

analysis• Fingerprint analysis• Forensic data analysis• Forensic toxicology• Investigating the physical and

chemical properties• Scientific methods for analyzing

evidences

• Aqueous geochemistry• Biogeochemistry• Concepts of energy, entropy and

fundamental thermodynamics• Earth crust• Giant planets• Isotope geochemistry• Organic geochemistry• Petrology• Photogeochemistry• Radiogenic isotope geochemistry• Regional geochemistry

• Biocatalysts in organic synthesis• Bioremediation• Designing a green synthesis• Disaster management• Environmental engineering science• Environmental pollution• Green catalysts• Green chemistry in day-to-day Life• Green computing • Green engineering• Green synthesis• Sustainable engineering

• Chemical plants development• Food microbiology• Green water treatment• Industrial photo chemistry• Industrial water supply• Petroleum refining and

petrochemicals• Pyrolysis• Ultrapure water production• Waste water treatment• Water treatment using different

types of nanomaterials

INORGANIC CHEMISTRy MATERIALS SCIENCE MEDICINAL CHEMISTRy

• Bioinorganic chemistry• Bioorganometallic chemistry• Ceramic chemistry• Cluster chemistry• Coordination chemistry• Materials science• Organometallic chemistry

• Biomaterial• Bioplastic• Ceramic engineering• Crystallography• Metallurgy• Polymer science and polymer

engineering• Surface science• Tribology

• Chemical synthesis• Chemicals in medicine• Drug design• Drug discovery• Medicinal inorganic chemistry• Medicinal radiochemistry• Natural products• Pharmacokinetics• Pharmacology

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THURSDAY, APRIL 02, 2020Concurrent Educational Sessions

METALLURGy

• Archaeometallurgy• CALPHAD• Carbonyl metallurgy• Cupellation• Experimental archaeometallurgy• Gold phosphine complex• Goldbeating• Metallurgical failure analysis• Mineral industry• Pyrometallurgy

GROUP PHOTO

LUNCH BREAK

COFFEE BREAKORGANIC CHEMISTRy

MOLECULAR BIOLOGy

PETROCHEMISTRy

NATURAL PRODUCT CHEMISTRy

PHySICAL CHEMISTRy

NEUROCHEMISTRy

POLyMER CHEMISTRy

• Ethers• Alcohol• Aldehydes• Amine• Aromaticity• Carboxylic derivatives• Chemical Reactivity• Haloalkanes• Haloarenes• Hydrocarbons• Intermolecular forces• Ketones• Nomenclature• Phenol

• Central dogma of molecular biology• Genetic code• Genome• Molecular engineering• Molecular microbiology• Molecular modeling• Protein interaction prediction• Proteome• Cell biology

• Advanced oil and gas technologies• Drilling and well operation technology• Environmental hazards of petroleum• Hydraulic fracturing• Oil refining• Petroleum engineering and its

industrial application• Petroleum geology and geo-physical

exploration

• Carbohydrates• Aromatic compounds• Terpenoids• Steroids• Amino acids, peptides and proteins• Alkaloids• Nucleosides, nucleotides and

nucleic acids• Porphyrins• Aliphatic compounds• Primary metabolites

• Thermochemistry• Chemical kinetics• Quantum chemistry• Electrochemistry• Photochemistry• Surface chemistry• Solid-state chemistry• Spectroscopy• Biophysical chemistry• Materials science• Physical organic chemistry• Micromeritics

• Molecular neuroscience• Neuroendocrinology• Neurogenesis• Neuroimmunology• Neuromodulation• Neuropharmacology• Neuroplasticity or synaptic plasticity• Signal transduction

• Polymerization Techniques• Biodegradable Polymers• Bioplastics• Biopolymers & Biomaterials• Ionic chain-reaction and complex

coordinative polymerization• Naturally occurring polymers• Organic and inorganic polymers• Polymer Synthesis• Polymers For Emerging

Technologies• Rheology

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Concurrent Educational SessionsFRIDAY, APRIL 03, 2020

NANOTECHNOLOGy• Energy applications of nanotechnology• Environmental benefits of nanotech-

nology• Molecular nanotechnology• Nanobiotechnology• Nanoelectromechanical relay• Nanoengineering• Nanometrology• Nanometrology• Nanotechnology in water treatment• Nanoweapons• Wet nanotechnology

Title: Highly-Efficient Thermoelectronic Conversion of Solar Energy and Heat into Electric Power With Special Consideration for the Integration and use of Graphene Membranes with the Hydrogen Output from our Turbine, for the desalinization and production of Potable WATER As Designed, Reviewed, and Postulated by H.M. Guevara Héctor M. Guevara | NuEnergy Technologies Corp, USA

Abstract: Electric power may be generated in a highly efficient manner, as demonstrated at NuEnergy’s Clearwater, FL laboratory, by TUV-PTL, as a Proof of Concept (POC). Please see attached POC copy, Appendix C, see Page 12. This POC was carried out from both, heat created by focused solar irradiation and/or the direct incidence of thermal radiation placed upon, or within proximity of NuEnergy’s Thermal Electric Generator (TEG) Cells, which were produced using single layer membranes of graphene, and placed upon a copper substrate. As the conversion efficiency of the thermionic process tends to be degraded by electron space charges, the efficiencies of thermionic generators have previously amounted to only a fraction of those fundamentally possible. We show that this space-charge problem can be resolved by shaping the electric potential distribution of the converter, such that the static electron space-charge clouds are transformed into an outputcurrent. Although the technical development of practical generators will require further substantial efforts, we have concluded and shown that a highly efficient transformation of heat to electric power has been achieved using NuEnergy’s Thermal Electric Generator, which is being integrated with NuEnergy’s Power House Generator (PHG) & Clean Water System. For the sake of simplicity of this Abstract, I will just go on to note that the hydrogen output from the BOUNDARY LAYER TURBINE being used in our PHG is, once again, combined with Oxygen, thereby producing H2O, which is then filtered and treated by the graphene filtering layers or membranes, through which this water flows, ultimately producing copious amounts of distilled potable WATER.

Title: Lifelong Learning for Common Action of Experts and Society Promoting Innovative Green Chemistry for Bioeconomy-based Sustainable Development

Jan W. Dobrowolski | AGH University of Science and Technology, Poland

Abstract: Lifelong Learning of Experts and Knowledge-based Society for creative partnership is key factor for

promotion recommended by the United Nations Goals of Sustainable Development. Over 50 years good practice in this

field and efficient contribution of the thousands of interested participants in intergeneration mission; has been

supporting such activity for optimizing use of progress in complementary fields of science and technology. The most

important output is better contribution to improvement the quality of life. The oldest lecture at initiated and developed by

me the AGH Open University was 100 years old Professor of chemistry Dr. Bielanski. There are documents of his

contribution to voluntary education already at the Students Scientific Club of Chemistry at the Jagiellonian University.

The tutor of this NGO Prof. Estreicher as also contributed to similar activity under tutorship of my great great

grandfather Prof. Czyrnianski the rector of this University and founder of the Scientific Club at 1870s’. Prof. Czyrnanski

initiated interdisciplinary study on cryology, followed by inspiration of integrated research in chemistry and physics of

Miss.M.Sklodowska. Later she become the 1st lady Professor at the University in Paris and double the Nobel Prize

winner both in physic and chemistry. I introduce in 1967 a concept of problem-solving education (instead of task-

oriented training), based on transdisciplinary case studies of representatives of over 30 subject of university study of

natural, social and technical disciplines. The goal of such voluntary education was evaluation of quality of Human

environment (focused on the risk factors to health, nature and culture heritage; supplemented by introduction new

biotechnology (mainly from Japan and Poland) for more efficient reduction of related environmental contamination. (by

e.g. better bio-treatment of wastewater , limitation of dissemination traffic output by laser stimulation plants growth and

formation preventive hedges alongside streets and greening cities, etc.). Interuniversity and international education of

thousands of members of students scientific clubs was integrated with lifelong learning by 1/ postgraduate and doctoral

courses, 2/ international workshops, schools and study visits, as well as Open University for all interested adults .

Conclusion: such kind interdisciplinary and intergeneration Lifelong: Learning of Knowledge-based Sustainable Society

would be useful both in developed and developing countries for exchange of complementary experiences in common

action of sustainable management of the natural resources, including better adaptation to climate change. 15

International Conferences on Sustainable Development and Eco-Innovation (under my scientific leadership from 1989)

and many publications may be useful for creation International Network for Promotion Lifelong Learning in this field

(integrating experts and society).

Title: Innovative biomimetic green chemistry for construction resistance to earthquake, strong wind and climate change

Jan W. Dobrowolski | AGH University of Science and Technology, Poland

Abstract: Let me propose foundation International Network of Experts (in complementary fields) Interested in

Basic and Heuristic Applied Study on Adaptation New Generation of Buildings and Habitats to Earth-quick,

Tsunami, Strong Wind as well as Climate Change. Adaptation to such environmental factors has to be

oriented on Bio-mimetic; both related to new biomaterials as well as innovative sustainable design

following e.g. protective external structures like ecto-sceletons of some animals (Invertebrates and

Vertebrates) good adopted to very strong external powers in water and on land. New transdisciplinary

Biomimetic Green Chemistry (Biotechnology integrated with Human Ecology and many biological and

chemical disciplines) would be a key factor for success of such human-oriented mission (supported by

experts in material engineering, architecture, IT and many complementary research fields contributing to

optimization of new constructions). I would like to introduce working hypothesis that starting point for solving

these crucial problems (for many regions of the world)-would be research-developing study on improvement

on macro scale in vitro culture of steam cells involved in process of synthesis of proper biomaterials and in

development adopted to above mentioned stress factors external skeletons. The next step would be

optimization of sustainable design of innovative constructions as result of cooperation of experts in

architecture, mathematical modeling and IT etc. The third step of this mission would be supplementation new

construction resistant to strong earth-quick, wind etc. would be introduction to new living houses life support

system (a bit similar to circular green chemistry recommended for long-term manned outer-space missions).

We have to collect complementary achievements in biotechnology-based wastewater treatment and

reuse as well as waste bio-management for bio-fuel and bio-energy production for optimal climate

conditions indoor environment and also for underground green housed for production pollutants-free

vegetables, mushrooms, algae, aquaculture for fishes breeding etc. Proposed solution would be also

useful all over the world for better adaptation to climate change and for sustainable labor market

related to bioeconomy-driven sustainable development.

Title: Hydrogen peroxide as green reagent in organic synthesis

Alexander O. Terent’ev | Russian Academy of Sciences, Russian Federation

Abstract: In the last decades, organic peroxides have received considerable attention from chemists and drug design experts, which is associated with a need in the search for drugs for the treatment of parasitic diseases, such as malaria and helminth infections. Considerable progress has been made in the design of effective peroxide antimalarial drugs. Some synthetic peroxides exhibit activity equal to or higher than that of artemisinin. Peroxides having antitumor or growth-regulatory activity were also documented.

In our work we developed atom-efficient and green methods for synthesis of various

types of organic peroxides using hydrogen peroxide and carbonyl compounds.

This work was supported by RFBR according to the research project 18-53-15010

and Projets de Recherche Conjoints (PRC) - CNRS, PRC Russie 2017 CNRS.

Title: Interaction of hydrogen with nanoscale structures in irradiated steel Evgenii Krasikov | National Research Centre “Kurchatov institute”, Russia

Abstract: As the service life of an operating nuclear power plant (NPP) increases, the potential misunderstanding of the degradation of aging components must receive more attention. In essence, the reactor pressure vessel (RPV) is the key structural component of the NPP that determines the lifetime of nuclear power plants. Environmentally induced cracking in the stainless steel corrosion-preventing cladding of RPV’s has been recognized to be one of the technical problems in the maintenance of light-water reactors. Therefore, in the case of cladding failure, the problem arises of hydrogen (as a corrosion product) embrittlement of irradiated RPV steel because of exposure to the coolant. The effects of neutron fluence and irradiation temperature on steel/hydrogen interactions (adsorption, desorption, diffusion, mechanical properties at different loading velocities, post-irradiation annealing) were studied. Hydrogen accumulation analyses and thermal desorption investigations were performed to prove the evidence of hydrogen trapping at irradiation defects. Extremely high susceptibility to hydrogen embrittlement was observed with specimens which had been irradiated at relatively low temperature.

Our study on radiation-hydrogen embrittlement of the steel raises the question concerning the

unknown source of hydrogen that was discovered in our experiments. It is necessary to look for this

source of hydrogen especially because hydrogen flakes were detected in reactor vessels of Belgian

NPPs. As a possible initial hypothesis about the enigmatical source of hydrogen one can propose

protons generation during beta-decay of free neutrons inasmuch as protons detected by researches

at nuclear reactors as witness of beta-decay of free neutrons.

Title: Using rheology data to understand mineral flotation process performance

Saeed Farrokhpay | University of Lorraine, France

Abstract: Mineral and chemical processing industries play an important role in the

current global economics to achieve and maintain sustainability. It is known that the

rheological behaviour of mineral slurries affects their processing. However, in addition

to controlling the transportation of slurries around processing circuits, rheological

behaviour also influences separation processes, such as flotation. Although the

impact of rheology in unit operations such as grinding and slurry transport has

received considerable attention, this has not been the case for flotation. This paper

explains the relationship between rheology and froth flotation performance. The

results show that mineral flotation performance can be significantly improved by

controlling the process rheology.

Title: A Two-Photon Fluorescence Probe for Zinc Ions in Live Cells and Tissues with Large Two-Photon Action Cross Section Chibao Huang | Xiangtan University, China

Abstract: A novel two-photon fluorescence probe for Zn2+ derived from twin-cyano-

stilbene as a two-photon fluorophore and 4-(pyridine-2-ylmethyl)piperazine as a novel

Zn2+ ligand was develped. The probe shows a 72.5-fold fluorescence brightness

enhancement in response to Zn2+, large two-photon action cross-section (580 GM),

non-cytotoxic effect, and pH insensitivity in the biologically relevant range, and its

dissociation constant (KdTP) is 0.52 ± 0.01 µM. The probe can selectively detect

intracellular free Zn2+ ions in live cells for 1500 s or so and in living tissues at a depth

of 80−150 µm without interference from other metal ions and the membrane-bound

probes.

Title: Theory and Calculation of the Phosphorescence Phenomenon Boris Minaev | Bohdan Khmelnytsky National University, Ukraine

Abstract: Phosphorescence is a phenomenon of delayed luminescence that corresponds to the

radiative decay of the molecular triplet state. As a general property of molecules, phosphorescence

represents a cornerstone problem of chemical physics due to the spin prohibition of the underlying

triplet-singlet emission and because its analysis embraces a deep knowledge of electronic

molecular structure. Phosphorescence is the simplest physical process which provides an example

of spin-forbidden transformation with a characteristic spin selectivity and magnetic field

dependence, being the model also for more complicated chemical reactions and for spin catalysis

applications. The bridging of the spin prohibition in phosphorescence is commonly analyzed by

perturbation theory, which considers the intensity borrowing from spin-allowed electronic

transitions. In this review, we highlight the basic theoretical principles and computational aspects

for the estimation of various phosphorescence parameters, like intensity, radiative rate constant,

lifetime, polarization, zero-field splitting, and spin sublevel population. Qualitative aspects of the

phosphorescence phenomenon are discussed in terms of concepts like structure−activity

relationships, donor−acceptor interactions, vibronic activity, and the role of spin−orbit coupling

under charge-transfer perturbations. We illustrate the theory and principles of computational

phosphorescence by highlighting studies of classical examples like molecular nitrogen and oxygen,

benzene, naphthalene and their azaderivatives, porphyrins, as well as by reviewing current research

on systems like electrophosphorescent transition metal complexes, nucleobases, and amino acids.

We furthermore discuss modern studies of phosphorescence that cover topics of applied

relevance, like the design of novel photofunctional materials for organic light-emitting diodes

(OLEDs), photovoltaic cells, chemical sensors, and bioimaging.

Title: Deracemization and Stereoinversion of Secondary Alcohols Using a Single Enzymatic Approach

Musa M. Musa | King Fahd University of Petroleum and Minerals, Saudi Arabia

Abstract: Deracemization of alcohol racemates is an attractive approach that could surpass the

50% yield limit of traditionally used kinetic resolution methods. Controlling enantioselectivity of

alcohol dehydrogenase-catalyzed transformations using site-directed mutagenesis enabled their

use in racemization of enantiopure secondary alcohols and in deracemization of racemic secondary

alcohols [1]. Controlled racemization of enantiopure secondary alcohols is achieved using various

mutants of secondary alcohol dehydrogenase from Thermoanaerobacter ethanolicus (TeSADH)

and in the presence of the reduced and oxidized forms of its cofactor nicotinamide-adenine

dinucleotide [2,3]. We also developed a deracemization method for secondary alcohols that uses a

single mutant of TeSADH in two steps [4]. A single mutant of TeSADH enables the non-

stereoselective oxidation of racemic alcohols to ketones, followed by a stereoselective reduction

reaction for the resulted ketone. The key component in this deracemization approach is the ability

to control the TeSADH-catalyzed transformations using protein engineering and medium

engineering. Varying the amounts of acetone and 2-propanol cosubstrates controls the

stereoselectivities of the consecutive oxidation and reduction reactions, respectively. We used one

enzyme to accomplish deracemization of secondary alcohols with up to >99% ee and >99 %

recovery in one pot and without the need to isolate the prochiral ketone intermediate. This is the

first reported deracemization method for alcohols that uses a single enzyme. This report was

highlighted on the cover page of ChemCatCham. Subsequently, this approach was used in

stereoinversion of enantiopure alcohols [5]. Recently, a comprehensive review, which includes this

approaches among other deracemization approaches (bienzymatic and chemoenzymatic), was

published by Musa and coworkers, which was also highlighted on the cover page of Catalysis

Science and Technology [6].

Title: Development of pH-sensitive microcapsules based-biopolymers as oral drug delivery system

Ahmed. M. Omer | SRTA-City, Egypt

Abstract: An efficient oral drug delivery system was developed based on natural

biopolymers. Where, sodium alginate, chitosan derivative and cellulose derivative

were used for microcapsules formulation via a simple ionic gelation technique. The

formulated duel layered microcapsules were characterized using FT-IR, SEM and

TGA characterization tools, respectively. Moreover, both swelling and in vitro drug

release profiles were studied under simulated gastric (pH 1.2), intestinal (pH 6.8) and

colon (pH 7.4) conditions. The gained results indicated that drug encapsulation

efficiency (EE %) exceeded 85% regardless of the initial loaded amount. The

cumulative released amount of DS was affected by variation of chitosan derivative

concentration. Biodegradability and cytotoxicity of the developed microcapsules were

also investigated. The results clearly suggested that the formulated microcapsules

based biopolymers could be effectively applied as new pH sensitive carriers for oral

drug delivery.

Title: Bioeconomic Perspectives for Sustainable Development of Melghat Region D.K. Belsare | Bhopal University, India

Abstract: The Melghat area comprises of two tahsils of Amaravati district of Maharastra State (India). The area

includes 300 forest villages and two urban towns covering 40,000 ha with total population of 2,82,561 people, mostly

,87% , Korku tribals. Most of them live below poverty line and depend mainly on forest resources for their livelihoods.

Some of them have agricultural land of small holding and practice farming. They are deprived of health care and their

children die of malnutrition. Therefore for their sustainable development, we have to consider perspectives of

bioeconomy. Being an agriculture and forest-based region, the Melghat derives most part of its potential biomass from

agricultural crops and forest by products. About 23.5% of the total primary energy used in this region is still generated

from biomass, and more than 70% of the population depends upon it for its energy needs. The emerging bioeconomy in

the Melghat context is changing the feedstock competition on biomass for food, energy and industrial material use.

There is therefore a need to increase efficiency in bioeconomy through innovations that would not be in competition

with, but enhances food security. Hence, there is a need for innovation policies to address these issues. Some of the

pointers for research and innovation strategy for realizing the bioeconomic agenda in Melghat relate to, researching on

improvements of agricultural practices to increase biomass production for food and non-food uses., Taking into

consideration the available leads from on-going projects on diversified agriculture, crop rotation practices, improved

water and fertilizer management, phenotyping etc. Increasing the agricultural biomass potential by investing in high-

yields varieties, energy plantation in unexploited waste land, and regional solutions diversified crop selection as per

state geographical and agronomical conditions. Researching on new crops/plants that have the potential of growing on

marginal or waste land or having high productivities and low land use.

Title: A docking molecular calculations on D - Mannose for the treatement of urinary infection caused by e-Coli bacteria

Nezha Sekkal-Taleb | University of Djillali Liabes of Sidi bel Abbes

Abstract: D-Mannose is a natural sugar; it is present in various foods, and binds to E. coli, which is

then discharged in urine.

The purpose of this research is to prove the efficiency of D-Mannose on the urinary infection

caused by E-coli bacteria.

First, we try to provide an approach to the mean duration of treatment by performing tests on

laboratory rats, by provocation of UTI contaminating rats by different ways then, administration of D-

Mannose orally. A bacteriological examination of urine was carried out and the interpretation of

results was based on the sterility of the culture media.

Secondly, we study a protein-protein interactions, which have an important role to understand the

process of pathogenesis of bacterial and viral infections.

We have study the interaction between D -Mannose and the Fimh protein by the use of molecular

dynamics method. Initially, several structural calculations and optimizations by Hyperchem8

software were conducted on D- Mannose to understand how this natural sugar attack the

Escherichia coli bacterium.

Then, the Docking calculations were performed by Hex 6.3. Interpretation of results is based on the

energy of interaction formed by ligands Alpha -D- mannose and Beta -D- mannose. The lowest

energy of interaction of complex probably present a greater inhibition of Fimh protein.

Title: Computational Study of the Electronic Absorption Spectra of Ni(II), Pt(II) and Pd(II) Photosensitizers Complexes Used in Sensitized Solar Cells (DSSC).

S. Brahim | University of Saida

Abstract: The conversion efficiency of DSSC (Dye Sensitized Cell Solar) is defined by the ability of the electron transport, cheap

fabrication, flexibility and intense absorption in the visible region of the spectrum. In order to find dyes satisfying these restrictions,

many experimental researches have been done to synthesize and to analyze different molecules. Based on previous studies,

Santosh K et all synthesized a new complexes: [M(dppf) L]; which M=Ni, Pt and Pd, L= p-tolylsulfonyl dithiocarbimate. These

complexes have been characterized using spectroscopic methods (IR, 1H,

13C and

31P NMR and UV-Vis), cyclic voltammetry and

crystal X-ray diffraction. Their light harvesting properties have been investigated. The absorption spectra of these complexes were

measured at room temperature in CH2Cl2 solution. They present absorption bands near 385-440 nm. This was interpreted to be due

to ligand metal charge transfer. The other higher energy bands at 250-350 nm are attributed to the intraligand charge-transfer

transitions. Our contribution to study these complexes is set theoretical spectra from quantum calculation. For each complex, a

geometry optimization was done to find the optimal structure at the density functional theory (DFT) level. We used the hybrid

functional B3LYP, PBE0, and CAM-B3LYP with 6-31G (d,p) and LANL2DZ basis set. All our calculations were performed using

Gaussian09 package. The analyses of the frontier molecular orbitals have performed to identify the type of charge transfer. The

electronic spectra were calculated using the time dependant density functional theory (TD-DFT). Whereas the solvent effects of

methylene dichloride have been included using the integral equation formalism of the polarizable continuum model. The influences of

functional, substitution and solvent on electronic spectra have been assessed. According to the computed results, the geometry

optimization was in good agreement with the experimental results from X-ray diffraction. As experimentally observed, computations

results reveal that all complexes show a tree absorption bands in UV region and very low absorption one in visible region. We have

assigned these bands to the electronic transitions answerable for their appearance; they are characterized by mixed character mainly

dominated by MLCT and LLCT character.

Title: Biofilm formation and resistance of emerging strains of Candida non-albicans to conventional antifungal agents

S.M.L. Seddiki | University center of Naâma

Abstract: The hospital can be considered as an ecosystem where the patient is found in contact

with the microbial world and faces the risk of contracting an infection that is termed the nosocomial.

Some opportunist pathogens yeasts parts of this universe, Candida sp. is responsible for more than

75% of systemic fungal infections. These infections are primarily related to medical devices such as

catheters that promote the formation of biofilms. That structures set up a nidus for disease because

is not easily amenable to conventional antifungal therapy. The purpose of this study was to evaluate

and compare the effects of two antifungals, amphotericin B which is a polyene and fluconazole, an

azole derivative. For that, we conducted our study at the Hospital University Center of Sidi Bel

Abbès (Algeria), which was to assess the responsible yeast species, then, to check their power to

form biofilms and to test their resistance against amphotericin B and fluconazol. From 457 samples,

37 strains of Candida sp. were isolated, along with the dominance of C. glabrata. Nevertheless, 31

strains were able to form biofilms, in addition, it appears from this study that the antifungal tests

show clearly that sessile cells of Candida sp. were much more resistant than their planktonic

counterparts, thirty two (32) times higher towards AmB and one hundred twenty eight (128) times to

fluconazole. Moreover, images of electron microscopy show the formation of biofilms on the internal

surfaces of catheters.

Title: In Vitro Bronchorelaxant Effects of Capparis Spinosa Aqueous Extracts on Rat Trachea

Nadia Benzidane | Setif 1 University

Abstract: Capparis spinosa (Capparidaceae) dicotyledons from the class of spermaphytes, is a

shurb, enduring and woody plant, typically Mediterranean, largely used in folk medicine in the

Mediterranean countries including Algeria. The aim of the present research is to assess the in vitro

effects of aqueous extract of different parts of Capparis spinosa (leaves, fruits and seeds) on rat

trachea in order to establish them as a real source for the isolation of bioactive compounds with

potential use as anti-obstructive or anti-allergic agents. Rings of windpipes of rat Wistar were

isolated, streamlined cut and suspended in organ bath containing 10 ml of Krebs physiological

solution. The addition of Capparis spinosa extracts (0.1, 1 and 10 mg/ml) during the step of

contraction by acetylcholine showed various effects on trachea. Incubation of the windpipe for 30

mn with extracts proves to be so efficient. The dose of 10 mg/ml showed a significant relaxant

effect for fruits and seeds, and constrictor effect for the leaves. The results showed a potent

relaxant effect of the fruit aqueous extract of Capparis spinosa, on rat trachea, with a dose

dependant manner. However, the leaf aqueous extract has a contractive effect. A muscarinic

receptor blockade/stimulation was suggested for caper/leaf extracts.

Title: Isolation and identification of antibacterial steroid compounds from Ulva fasciata in the Persian Gulf

A A Motallebi Moghanchoghi | Islamic Azad University

Abstract: For numerous reasons, marine-obtained resources have attracted the interest of researchers. One of the subjects attracted the interest of researchers in recent years in the field of biologist marine algae due to their nutritional value, their benefits for health and their biological activities. In this study, the powder was extracted using acetone, then the extract purified by silica gel column chromatography with n-hexane and ethyl acetate combination to isolate the steroid compounds. Isolated compound were run through TLC and sprayed with vanillin-sulphuric acid reagent for detection of steroid compounds and profile of isolated compounds obtained by gas chromatography (GC). Antibacterial activity of steroids extracted of green algae Ulva fasciata Qeshm Island in the Persian Gulf were assessment (in vitro). The antibacterial activity of the fractions was determined by Broth Dilution Methods against clinical Gram-negative bacteria: Escherichia coli, Pseudomonas aeruginosa, Salmonella. typhi and Gram-positive bacteria: Staphylococcus aureus, Bacillus subtilis, Bacillus cereus. The steroids; cholest-7-en-3ol and cholestan-3-one,cyclic 1,2-ethanediyl acetal compounds in column fraction were identified by GC. Our results showed the minimum bactericidal concentration (MBC) of the cholest-7-en-3ol and cholestan-3-one,cyclic 1,2-ethanediyl acetal for S. aureus and Bacillus cereus were 500 μg ml-1, the MBC of the cholest-7-en-3ol for B. subtilis was 500 μg ml-1 and 1000 μg ml-1 detected for cholestan-3-one,cyclic 1,2-ethanediyl acetal. The compounds had neither antibacterial activities on gram negative bacteria. Based our results, steroids extracted of Ulva fasciata. can be considered as a source of novel antibiotic.

Title: A Triazol containing Uio-type metal-organic framework as highly efficient CO2 capture and catalytic conversion

Pourya Zarshenas | Shahid Beheshti University

Abstract: The rising levels of CO2 have been the area of concern globally over several decades now,

owing to its obvious detrimental effects in the biosphere. CO2 as the primary dangerous gas has been cited

as the leading culprit by temperature increase of the global surface as well as subsequent climate changes.

The chemical conversion of CO2 into five membered cyclic carbonates has been widely demonstrated as

an industrially important transformation fulfilling typical green chemistry credentials. Metal-organic

frameworks (MOFs) are an excited and rapidly growing class of porous crystalline materials that are

constructed from multi dentate organic linkers and discrete inorganic nodes. Compared to other porous

materials such as zeolites, mesoporous silica and carbon nanotubes, tunable pore size, high porosity and

surface area of MOFs make them important candidates for heterogeneous catalysts, gas

sorption/storage/separation, chemical sensing, biomedicines, drug delivery and other technologies. There

are many known MOFs such as, zeolite imidazolat frameworks (ZIFs), MILs and Zr-based MOFs which

exhibit both chemical and thermal stability for certain applications. One family of MOFs which are rapidly

extended are Zr based MOFs including UiOs, PCNs, NU-1000 and MOF-808. The interest in these family of

MOFs emerges from their thermal, chemical and mechanical stabilities which make them ideal candidates

for many applications. In this seminar, a highly porous and stable UiO-66 -type metal-organic framework

containing both metal sites (as Lewis acid) and nitrogen rich triazole group (as Lewis base) was

successfully synthesized via solvothermal reaction. In comparison with non-functionalized UiO-66, triazole

containing UiO-66 MOF exhibit superior catalytic activities in CO2 cycloaddition with epoxides. It was

demonstrated that the highly performance of triazole containing catalyst is due to the presence of nitrogen

groups of triazole moiety which can act as Lewis base. In addition the catalyst showed excellent stability

and easy recyclability in comparison with homogenous catalysts.

Title: Computational study of reactivity and solubility of Rubescin D and E molecules in gas phase and in solvent media using Hartree-Fock and DFT methods R. A. Yossa Kamsi | University of yaounde

Abstract: The quantum chemical methods were used to study the global and local reactivity, the

energy and free energy of solvation, the partition coefficient (log P) and the solubility (log S) of

Rubescin D and E in gas phase and in some solvents media using the IEF-PCM model as

implemented in Gaussian 09 software. The analysis of energy and free energy of solvation shows

that the molecules are thermodynamically more stable in water. The values of electrophilicity index,

chemical potential, hardness and maximum charge transfer indexes have revealed that both

molecules can react easily in water. C2 and C62; C57 and C32; are preferred site for electrophilic

and free radical attack. The log P values show that Rubescin D and E are lipophilic and can be

delivered orally. The log S values are also calculated and found to be in the range of -5 to -1 at all

the levels used. That lead us to the conclusion that Rubescin D and E reflects a compromise

between the polarity needed for reasonable aqueous solubility and the hydrophobicity needed for

acceptable membrane passage.

Title: Enzymatic reactions in the production of biomethane from organic waste

Abstract: Enzymatic reactions refer to organic reactions catalyzed by enzymes. This review aims

to enrich the documentation relative to enzymatic reactions occurring during the anaerobic

degradation of residual organic substances with emphasis on the structures of organic compounds

and reaction mechanisms. This allows to understand the displacement of the electron between

electron-rich and electron-poor entities to form new bonds in products. The detailed mechanisms of

enzymatic reactions relative to the production of biomethane have not yet been reviewed in the

scientific literature. Hence, this review is novel and timely as it discusses the chemical behavior or

the reactivity of different functional groups, thereby allowing to better understand the enzymatic

catalysis in the transformations of residual proteins, carbohydrates, and lipids into biomethane and

fertilizers. Such understanding allows to improve the overall biomethanation efficiency in industrial

applications.

Topwe Milongwe Mwene-Mbeja | University of Lubumbashi

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