Journal articles on the topic 'Ph.D. Theses'

This review paper provides data about research activities at the School of the turbulent swirling flow at the Faculty of Mechanical Engineering, University of Belgrade, conducted in the period 1941 up to date. An overview is provided of the main directions in this research area. First papers dealt with the turbulent swirling flow in hydraulic turbines to be continued by the experimental and analytical approaches on the axial fans pressure side. The complexity of 3-D, non-homogeneous, anisotropic turbulent velocity fields required complex experimental and theoretical approach, associated with the complex numerical procedures. Analytical approaches, complex statistical analyses and experimental methods and afterwards CFD employed in the research are presented in this paper. The 150 scientific papers, numerous diploma works, several master of science (magister) theses, six Ph. D. theses and two in progress, 40 researchers, national and international projects are the facts about the School. Scientific references are chronologically presented. Numerous abstracts from scientific conferences, presentations, projects with industry and lectures are not given here.

C.D. Narasimhaiah, a commonwealth writer and a postcolonial theorist, has not devoted himself simply to writing theory alone. In his literary criticism are contained certain theoretical principles which will be mentioned in the course of this paper. For the present, suffice it to say that if Gayatri C Spivak and Homi K Bhabha have been responsible for postcolonial theories in the West, Narasimhaiah has been doing the very same thing in a simple, though unsophisticated fashion by writing a literary criticism with a difference. He has not rested after putting down his ideas on paper but has championed the cause of his ideas in practice, contributing to the very face of English studies in India. For about half a century, Narasimhaiah had worked with a mission that literary evaluation and criticism be fair and unbiased. He has attacked English departments of Indian universities for re-cycling second-rate British authors through Ph. D. theses.

The present study analyses the lexical bundles (LBs) used by scholars of PhD linguistics in Pakistani universities. For this purpose, a small corpus of the abstracts of 73 PhD linguistics theses ranging from 2017 to 2022 was built. Antconc software was used to get the frequencies of the LBs. The objectives of the study were to examine the structural and functional taxonomies of those LBs. Biber’s (1999) classification was used for the structural analysis, while Hyland’s (2008) classification was used for the functional analysis. The study found there is a less tendency toward the use of 4-word LBs. It was disappointing to observe a low frequency of structural analysis for 4-word LBs. On the other hand, the functional classification of the LBs was relatively satisfactory due to the discovery of a higher number of 4-word LBs.The study stresses the importance of teaching the structure and functions of LBs from the intermediate level so that when these students reach the postgraduate level, they should be able to adhere to the rules of cohesion and coherence.

The Online Directory of CSU Ph. D. Awarded Thesis Portal is developed to address the lack of a centralized mechanism for accessing thesis-related information at Central Sanskrit University (CSU). Prior to this initiative, research scholars faced many challenges in locating thesis topics, supervisors, subjects, year and the availability of physical copies due to the absence of a searchable database. Existing resources, such as non-searchable PDF lists of theses awarded from 2018 onward, were inadequate, leaving earlier data inaccessible to the research scholars. This research highpoints the implementation of a dynamic web-based search portal designed to provide real-time access to a comprehensive thesis database. The portal integrates HTML and SQL-based technologies to facilitate efficient retrieval of information such as thesis titles, authors, supervisors, and campus locations of physical copies. Key features include user-friendly search functionality, advanced filtering options, and automated database updates to ensure accuracy and accessibility. The results demonstrate that the portal significantly enhances usability, reduces inefficiencies, and supports scholars in identifying research gaps and opportunities for further study. By bridging the accessibility gap and modernizing thesis data management across CSU’s 12 campuses, the portal sets a new standard for resource availability in academic institutions. This initiative underscores the importance of leveraging digital tools to advance research and improve academic support systems.

The objective of this paper is to prepare and present an annotated bibliography of doctoral dissertation of Library and Information Science (LIS) in Bangladesh. There were total 17 PhD dissertation of Library and Information Science (LIS) were found to be made an annotated bibliography. Total enumeration sampling technique was used for this study in which the whole of the population or everything were considered as the sample. This study found that at the initial stage some Ph. D. dissertation bears a moderate standard in quality. In some theses arrangement was not proper and information was not enough. But the standard is increasing rapidly by the proper initiatives of students and teachers of the University. With the years elapsed since its establishments of University of Dhaka the substantial member of the teaching staff have been trained from abroad which ultimately gave a new outlook and enriched the fields of research.

Biodegradable mulch films were developed over the last decades to replace polyethylene, but their short durability and higher costs still limit their diffusion. This work aimed to test an innovative composite mulching film constituted by a mixture of carboxylmethyl cellulose, chitosan and sodium alginate, enriched or not with an inorganic N- and P-source to help the microbial breakdown in soil. The trial was carried out using outdoor mesocosms cultivated with lettuce plants with high-density planting. Commercial Mater-Bi® and a polyethylene film were taken as control treatments. Air temperature and humidity monitored daily during the 51 d cropping cycle remained within the ideal range for lettuce growth with no mildew or fungi infection. Visible mechanical degradation of the experimental biopolymers occurred after 3 weeks; however, Mater-Bi® and polyethylene remained unaltered until harvest. Chemical soil variables (TOC, TN, CEC, EC) remained unchanged in all theses, whereas the pH varied. The yield, pigments, total phenols, flavonoids and ROS scavenging activity of lettuce were similar among treatments. Despite their shorter life service (~3 weeks), polysaccharide-based mulching films showed their potential to protect lettuce plants at an early stage and provide yield and nutraceutical values similar to conventionally mulched plants, while allowing a reduced environmental impact and disposal operations.

Raw milk characterization constitutes a preliminary and an important step to take account in order to obtain an optimal technological valorization. Among other factors, breed, feed and stage of lactation are the most important factors that influenced cheese making and other dairy products valorization. Thus, this study proposes to analyze the physicochemical composition of Drâa goat milk and to study raw milk fluctuations throughout a complete lactation period. The study was carried out in the Experimental Station of Errachidia (Southern Morocco). In this context, sixteen goats were selected and sampled every week during a period of 160 days (average lactation length). A total of 128 samples of raw goat milk were analyzed according to international standards. Analyses were focused to determination of pH, acidity, density, Dry Matter (DM), Solids Non Fat (SNF), ash, fat and Total Nitrogenous Matter (TNM). Average values were about 17.8°D for acidity, 13.3% for Dry Matter, 0.73% for ash, 4.16% for fat and 3.60% for Total Nitrogenous Matter. In general, theses values are largely situated in the upper level of the range suggested by several Moroccan and foreign researchers for other goat species. On the other hand, the evolution of physical and chemical parameters throughout lactation stages showed that dry matter, fat content and total nitrogenous matter increased significantly throughout the lactation period; the opposite was found for density (p<0.001). No significant (p>0.05) changes were shown for milk acidity and the average found was around 17°D. Content of milk ash increased significantly during the late lactation stage compared to the earliest and the opposite was observed for pH.The results of the present investigation show that Drâa goat milk is rich with desirable components like fat and protein for dairy product manufacturers, and that the late lactation stage seems to be the best period to ensure an optimum technological valorization.

The enzymes involved in lipopolysaccharide (LPS) biosynthesis, including Heptosyltransferase I (HepI), are critical for maintaining the integrity of the bacterial cell wall, and therefore these LPS biosynthetic enzymes are validated targets for drug discovery to treat Gram-negative bacterial infections. Enzymes involved in the biosynthesis of lipopolysaccharides (LPSs) utilize substrates that are synthetically complex, with numerous stereocenters and site-specific glycosylation patterns. Due to the relatively complex substrate structures, characterization of these enzymes has necessitated strategies to generate bacterial cells with gene disruptions to enable the extraction of these substrates from large scale bacterial growths. Like many LPS biosynthetic enzymes, Heptosyltransferase I binds two substrates: the sugar acceptor substrate, Kdo2-Lipid A, and the sugar donor substrate, ADP-l-glycero-d-manno-heptose (ADPH). HepI characterization experiments require copious amounts of Kdo2-Lipid A and ADPH, and unsuccessful extractions of these two substrates can lead to serious delays in collection of data. While there are papers and theses with protocols for extraction of these substrates, they are often missing small details essential to the success of the extraction. Herein detailed protocols are given for extraction of ADPH and Kdo2-Lipid A (KLA) from E. coli, which have had proven success in the Taylor lab. Key steps in the extraction of ADPH are clearing the extract through ultracentrifugation and keeping all water that touches anything in the extraction, including filters, at a pH of 8.0. Key steps in the extraction of KLA are properly lysing the dried down cells before starting the extraction, maximizing yield by allowing precipitate to form overnight, appropriately washing the pellet with phenol and dissolving the KLA in 1% TEA using visual cues, rather than a specific volume. These protocols led to increased yield and a higher success rate of extractions thereby enabling the characterization of HepI.

Vladimir Dmitrievich Fedorov was born on 21 March 1933 in Moscow. After finishing school he entered in the 2nd Moscow medical Institute named after N. And. Pirogov (1950-1956), where he performed the duties of Secretary of the Bureau of the Komsomol of the course and the member of the Komsomol Committee of the Institute; engaged in experimental work on the defibrillation of the heart. Studied in residency (1956-1958), graduate school (1958-1960), worked as a teaching assistant (1960-1966) and then associate Professor (1966-1971) chair of hospital surgery of the 2nd Moscow state medical Institute. In 1963 he defended his Ph. D. in 1971 doctoral dissertation. In 1972, Vladimir Dmitrievich Fedorov was appointed Director of research laboratory surgery clinic of the Ministry of health of the RSFSR. In 1976, on the initiative of V. D. Fedorov was the first in the USSR Department of Coloproctology of the Central doctors improvement Institute, which he headed for 13 years. In 1982 he was elected a corresponding member, and in 1986, academician of the Academy of medical Sciences (AMS) of the USSR. Since 1988, Vladimir Fyodorov, Director of the Institute of surgery named after AV Vishnevsky Academy of medical Sciences of the USSR. In 1990, V. D. Fedorov elected to the chair of surgery, faculty of postgraduate professional education of Moscow medical Academy named after I. M. Sechenov. Since 1974 he worked as a Deputy chief surgeon of the Medical center of President's Affairs Administration of the Russian Federation.
 D. Fedorov is the author of over 500 scientific works, including 13 copyright certificates and patents, and 20 monographs. Under his leadership, and counseling are protected by 32 doctoral and 47 master's theses.
 V. D. Fedorov was an honorary member of the Russian Association of endoscopic surgery and the Association hepatobiliary surgery, Moscow surgical society, surgical scientific societies of Uzbekistan, Kazakhstan and the Saratov region, Chairman of the surgical section and member of the Presidium of scientific medical Council of Ministry of health of the Russian Federation, a member of the Interdepartmental health Council, Deputy chief editor of the journal "Surgery", member of the editorial Board of the journal "Surgical Laparoscopy and Endoscopy" and one of the oldest journals "British Journal of Surgery". For two years he headed the Association of surgeons named after N. And. Pirogov (1992-1994). More than 10 years he was a member of the Presidium of the Russian Academy of medical Sciences and performed the duties of Chairman of the Board of Directors of the institutes of the Russian Academy of medical Sciences. Vladimir Dmitrievich, a foreign member of the Belarusian Academy of medical Sciences (2000) and the Academy of Sciences of Moldova (2003), honorary Professor of the Petrovsky national research center of the Russian Academy of medical Sciences and the Bashkir medical College. Academician V. D. Fedorov is the main national representative in the International society of surgeons (1990) national representative in the International society of University surgeons Coloproctology. Mr Kuznetsov – laureate of the State prize of the USSR (1985) and the RSFSR (1991), RF Government prize (2002), Honored scientist of Russia (1997), awarded the order of red banner of Labor (1976, 1978), Lenin (1983), "For merits before Fatherland" III degree, Friendship of peoples (1993).

Background: Contamination of crops with aflatoxin is considered a serious global threat to food safety, since potent carcinogenic, teratogenic, mutagenic and immunosuppressive effects of aflatoxins are well recognized. Recently, the use of adsorbents has been linked with protective effects against oxidative stress in several diseases. Thus, the aim of this study was to assess the occurrence of oxidative stress in quails (Coturnix coturnix) fed with aflatoxin-contaminated diet, as well as the protective effect of an adsorbent.Materials, Methods & Results: Twenty-eight quails were divided into four groups (n = 7): diet without additives (control; the group A), diet and adsorbent containing aluminosilicates (the group B), aflatoxin-contaminated diet (200 ppb) (the group C), and aflatoxin-contaminated diet (200 ppb) and adsorbent containing aluminosilicates (the group D). The composition of the adsorbent containing aluminosilicates was 0.3% based on yeast cell wall, silymarin, and bentonite. The animals received feed and water ad libitum during 20 days. At the end of the experimental period, total blood was collected by cardiac puncture in tubes without anticoagulant to obtain serum (centrifuged at 3500 g during 10 min) for later determination of biochemical parameters. The liver was placed in a solution of Tris–HCl 10 mM, pH 7.4 for TBARS (Thiobarbituric acid reactive substances), ROS (Reactive oxygen species), SOD (Superoxide dismutase) and CAT (Catalase) analysis. The hepatic tissue was gently homogenized in a glass potter in specific buffer, homogenated, and centrifuged at 10.000 g at 4ºC for 10 min to yield a supernatant (S1) used for analyses. Homogenate aliquots were stored at -80°C until utilization. Fragments of liver and intestine (5 cm) were collected for histopathological analyses. Between days 15 to 20 of the experiment, group C quails showed clinical signs, such as apathy, creepy feathers and reduced feed intake. At day 20 of experiment, macroscopically, the liver of quails belonging to the group C showed greenish yellow color differently from the other groups. Microscopically, no alterations were observed in the liver of animals in groups A and B. Severe diffuse microvacuolar degeneration (hydropic) of hepatocytes and small foci of necrosis in the liver were observed in the group C, as observed in the group D, but in a more moderate degree to microvacuolar degeneration. Seric total protein, albumin, globulin and uric acid levels decreased in the group C and D. The levels of alanine aminotransferase (ALT) increased in the group C, and the treatment with adsorbent was able to avoid this increment. Seric and hepatic reactive oxygen species and TBARS increased in the group C, and the treatment with adsorbent reduced theses parameters in the group D. Catalase (CAT) activity decreased, while ALA-D increased in the group C. The treatment with adsorbent was able to prevent CAT activity decrease, but it did not prevent the increase in ALA-D activity.Discussion: Aflatoxins are considered one of the most important problems in poultry production causing high economic losses to producers. In this study, the use of adsorbent showed a protective effect to hepatic tissue, minimizing histopathological lesions, as well as by preventing lipid peroxidation and exacerbated production of free radicals. Based on this data, aflatoxin intoxication causes hepatic oxidative stress that contributes directly to disease pathogenesis, and the addition of an adsorbent containing 0.3% based on bentonite, yeast cell wall and silymarin may be considered a new approach to prevent cellular and hepatic damage caused by aflatoxins.

In the present research paper, the research productivity of the subject of Agronomy at Indira Gandhi Agricultural University, Raipur has been studied from 2001-2021. For the study, the data on the subject of Agronomy at Indira Gandhi Agricultural University, Raipur has been collected from Krishikosh of Indian Council of Agricultural Research. Research productivity, authorship productivity, crop distribution, etc. have been described in the study. A total of 54 research works were completed in the subject of Agronomy from 2001-2021, out of which 45 male researchers and 09 female researchers were involved. Highest number of research work was done in year 2016 09, second place in 2017 and 2019, Dr. Narendra Pandey, Dr. G.K. Shrivastava , Dr. M.C. Bhrambri has the maximum number of 06 research scholars and Dr. Rajendra Singh Lakpale, Dr. B.L. Chandrakar , 04 researchers has been directed by Dr. G.S. Tomar and Dr. S.S. Kolhe. Research has been done on the maximum crop paddy and the second number, research has been done on maize.

Environments containing significant concentration of NaCl such as salt lakes harbor extremophiles microorganisms which have a great biotechnology interest. To explore the diversity of Bacteria in Chott Tinsilt (Algeria), an isolation program was performed. Water samples were collected from the saltern during the pre-salt harvesting phase. This Chott is high in salt (22.47% (w/v). Seven halophiles Bacteria were selected for further characterization. The isolated strains were able to grow optimally in media with 10–25% (w/v) total salts. Molecular identification of the isolates was performed by sequencing the 16S rRNA gene. It showed that these cultured isolates included members belonging to the Halomonas, Staphylococcus, Salinivibrio, Planococcus and Halobacillus genera with less than 98% of similarity with their closest phylogenetic relative. The halophilic bacterial isolates were also characterized for the production of biosurfactant and industrially important enzymes. Most isolates produced hydrolases and biosurfactants at high salt concentration. In fact, this is the first report on bacterial strains (A4 and B4) which were a good biosurfactant and coagulase producer at 20% and 25% ((w/v)) NaCl. In addition, the biosurfactant produced by the strain B4 at high salinity (25%) was also stable at high temperature (30-100°C) and high alkalinity (pH 11).Key word: Salt Lake, Bacteria, biosurfactant, Chott, halophiles, hydrolases, 16S rRNAINTRODUCTIONSaline lakes cover approximately 10% of the Earth’s surface area. The microbial populations of many hypersaline environments have already been studied in different geographical regions such as Great Salt Lake (USA), Dead Sea (Israel), Wadi Natrun Lake (Egypt), Lake Magadi (Kenya), Soda Lake (Antarctica) and Big Soda Lake and Mono Lake (California). Hypersaline regions differ from each other in terms of geographical location, salt concentration and chemical composition, which determine the nature of inhabitant microorganisms (Gupta et al., 2015). Then low taxonomic diversity is common to all these saline environments (Oren et al., 1993). Halophiles are found in nearly all major microbial clades, including prokaryotic (Bacteria and Archaea) and eukaryotic forms (DasSarma and Arora, 2001). They are classified as slight halophiles when they grow optimally at 0.2–0.85 M (2–5%) NaCl, as moderate halophiles when they grow at 0.85–3.4 M (5–20%) NaCl, and as extreme halophiles when they grow at 3.4–5.1 M (20–30%) NaCl. Hyper saline environments are inhabited by extremely halophilic and halotolerant microorganisms such as Halobacillus sp, Halobacterium sp., Haloarcula sp., Salinibacter ruber , Haloferax sp and Bacillus spp. (Solomon and Viswalingam, 2013). There is a tremendous demand for halophilic bacteria due to their biotechnological importance as sources of halophilic enzymes. Enzymes derived from halophiles are endowed with unique structural features and catalytic power to sustain the metabolic and physiological processes under high salt conditions. Some of these enzymes have been reported to be active and stable under more than one extreme condition (Karan and Khare, 2010). Applications are being considered in a range of industries such as food processing, washing, biosynthetic processes and environmental bioremediation. Halophilic proteases are widely used in the detergent and food industries (DasSarma and Arora, 2001). However, esterases and lipases have also been useful in laundry detergents for the removal of oil stains and are widely used as biocatalysts because of their ability to produce pure compounds. Likewise, amylases are used industrially in the first step of the production of high fructose corn syrup (hydrolysis of corn starch). They are also used in the textile industry in the de-sizing process and added to laundry detergents. Furthermore, for the environmental applications, the use of halophiles for bioremediation and biodegradation of various materials from industrial effluents to soil contaminants and accidental spills are being widely explored. In addition to enzymes, halophilic / halotolerants microorganisms living in saline environments, offer another potential applications in various fields of biotechnology like the production of biosurfactant. Biosurfactants are amphiphilic compounds synthesized from plants and microorganisms. They reduce surface tension and interfacial tension between individual molecules at the surface and interface respectively (Akbari et al., 2018). Comparing to the chemical surfactant, biosurfactant are promising alternative molecules due to their low toxicity, high biodegradability, environmental capability, mild production conditions, lower critical micelle concentration, higher selectivity, availability of resources and ability to function in wide ranges of pH, temperature and salinity (Rocha et al., 1992). They are used in various industries which include pharmaceuticals, petroleum, food, detergents, cosmetics, paints, paper products and water treatment (Akbari et al., 2018). The search for biosurfactants in extremophiles is particularly promising since these biomolecules can adapt and be stable in the harsh environments in which they are to be applied in biotechnology.OBJECTIVESEastern Algeria features numerous ecosystems including hypersaline environments, which are an important source of salt for food. The microbial diversity in Chott Tinsilt, a shallow Salt Lake with more than 200g/L salt concentration and a superficies of 2.154 Ha, has never yet been studied. The purpose of this research was to chemically analyse water samples collected from the Chott, isolate novel extremely or moderate halophilic Bacteria, and examine their phenotypic and phylogenetic characteristics with a view to screening for biosurfactants and enzymes of industrial interest.MATERIALS AND METHODSStudy area: The area is at 5 km of the Commune of Souk-Naâmane and 17 km in the South of the town of Aïn-Melila. This area skirts the trunk road 3 serving Constantine and Batna and the railway Constantine-Biskra. It is part the administrative jurisdiction of the Wilaya of Oum El Bouaghi. The Chott belongs to the wetlands of the High Plains of Constantine with a depth varying rather regularly without never exceeding 0.5 meter. Its length extends on 4 km with a width of 2.5 km (figure 1).Water samples and physico-chemical analysis: In February 2013, water samples were collected from various places at the Chott Tinsilt using Global Positioning System (GPS) coordinates of 35°53’14” N lat. and 06°28’44”E long. Samples were collected randomly in sterile polythene bags and transported immediately to the laboratory for isolation of halophilic microorganisms. All samples were treated within 24 h after collection. Temperature, pH and salinity were measured in situ using a multi-parameter probe (Hanna Instruments, Smithfield, RI, USA). The analytical methods used in this study to measure ions concentration (Ca2+, Mg2+, Fe2+, Na+, K+, Cl−, HCO3−, SO42−) were based on 4500-S-2 F standard methods described elsewhere (Association et al., 1920).Isolation of halophilic bacteria from water sample: The media (M1) used in the present study contain (g/L): 2.0 g of KCl, 100.0/200.0 g of NaCl, 1.0 g of MgSO4.7HO2, 3.0 g of Sodium Citrate, 0.36 g of MnCl2, 10.0 g of yeast extract and 15.0 g agar. The pH was adjusted to 8.0. Different dilutions of water samples were added to the above medium and incubated at 30°C during 2–7 days or more depending on growth. Appearance and growth of halophilic bacteria were monitored regularly. The growth was diluted 10 times and plated on complete medium agar (g/L): glucose 10.0; peptone 5.0; yeast extract 5.0; KH2PO4 5.0; agar 30.0; and NaCl 100.0/200.0. Resultant colonies were purified by repeated streaking on complete media agar. The pure cultures were preserved in 20% glycerol vials and stored at −80°C for long-term preservation.Biochemical characterisation of halophilic bacterial isolates: Bacterial isolates were studied for Gram’s reaction, cell morphology and pigmentation. Enzymatic assays (catalase, oxidase, nitrate reductase and urease), and assays for fermentation of lactose and mannitol were done as described by Smibert (1994).Optimization of growth conditions: Temperature, pH, and salt concentration were optimized for the growth of halophilic bacterial isolates. These growth parameters were studied quantitatively by growing the bacterial isolates in M1 medium with shaking at 200 rpm and measuring the cell density at 600 nm after 8 days of incubation. To study the effect of NaCl on the growth, bacterial isolates were inoculated on M1 medium supplemented with different concentration of NaCl: 1%-35% (w/v). The effect of pH on the growth of halophilic bacterial strains was studied by inoculating isolates on above described growth media containing NaCl and adjusted to acidic pH of 5 and 6 by using 1N HCl and alkaline pH of 8, 9, 10, 11 and 12 using 5N NaOH. The effect of temperature was studied by culturing the bacterial isolates in M1 medium at different temperatures of incubation (4°C–55°C).Screening of halophilic bacteria for hydrolytic enzymes: Hydrolase producing bacteria among the isolates were screened by plate assay on starch, tributyrin, gelatin and DNA agar plates respectively for amylase, lipase, protease and DNAse activities. Amylolytic activity of the cultures was screened on starch nutrient agar plates containing g/L: starch 10.0; peptone 5.0; yeast extract 3.0; agar 30.0; NaCl 100.0/250.0. The pH was 7.0. After incubation at 30 ºC for 7 days, the zone of clearance was determined by flooding the plates with iodine solution. The potential amylase producers were selected based on ratio of zone of clearance diameter to colony diameter. Lipase activity of the cultures was screened on tributyrin nutrient agar plates containing 1% (v/v) of tributyrin. Isolates that showed clear zones of tributyrin hydrolysis were identified as lipase producing bacteria. Proteolytic activity of the isolates was similarly screened on gelatin nutrient agar plates containing 10.0 g/L of gelatin. The isolates showing zones of gelatin clearance upon treatment with acidic mercuric chloride were selected and designated as protease producing bacteria. The presence of DNAse activity on plates was determined on DNAse test agar (BBL) containing 10%-25% (w/v) total salt. After incubation for 7days, the plates were flooded with 1N HCl solution. Clear halos around the colonies indicated DNAse activity (Jeffries et al., 1957).Milk clotting activity (coagulase activity) of the isolates was also determined following the procedure described (Berridge, 1952). Skim milk powder was reconstituted in 10 mM aqueous CaCl2 (pH 6.5) to a final concentration of 0.12 kg/L. Enzyme extracts were added at a rate of 0.1 mL per mL of milk. The coagulation point was determined by manual rotating of the test tube periodically, at short time intervals, and checking for visible clot formation.Screening of halophilic bacteria for biosurfactant production. Oil spread Assay: The Petridis base was filled with 50 mL of distilled water. On the water surface, 20μL of diesel and 10μl of culture were added respectively. The culture was introduced at different spots on the diesel, which is coated on the water surface. The occurrence of a clear zone was an indicator of positive result (Morikawa et al., 2000). The diameter of the oil expelling circles was measured by slide caliber (with a degree of accuracy of 0.02 mm).Surface tension and emulsification index (E24): Isolates were cultivated at 30 °C for 7 days on the enrichment medium containing 10-25% NaCl and diesel oil as the sole carbon source. The medium was centrifuged (7000 rpm for 20 min) and the surface tension of the cell-free culture broth was measured with a TS90000 surface tensiometer (Nima, Coventry, England) as a qualitative indicator of biosurfactant production. The culture broth was collected with a Pasteur pipette to remove the non-emulsified hydrocarbons. The emulsifying capacity was evaluated by an emulsification index (E24). The E24 of culture samples was determined by adding 2 mL of diesel oil to the same amount of culture, mixed for 2 min with a vortex, and allowed to stand for 24 h. E24 index is defined as the percentage of height of emulsified layer (mm) divided by the total height of the liquid column (mm).Biosurfactant stability studies : After growth on diesel oil as sole source of carbone, cultures supernatant obtained after centrifugation at 6,000 rpm for 15 min were considered as the source of crude biosurfactant. Its stability was determined by subjecting the culture supernatant to various temperature ranges (30, 40, 50, 60, 70, 80 and 100 °C) for 30 min then cooled to room temperature. Similarly, the effect of different pH (2–11) on the activity of the biosurfactant was tested. The activity of the biosurfactant was investigated by measuring the emulsification index (El-Sersy, 2012).Molecular identification of potential strains. DNA extraction and PCR amplification of 16S rDNA: Total cellular DNA was extracted from strains and purified as described by Sambrook et al. (1989). DNA was purified using Geneclean® Turbo (Q-BIO gene, Carlsbad, CA, USA) before use as a template in polymerase chain reaction (PCR) amplification. For the 16S rDNA gene sequence, the purified DNA was amplified using a universal primer set, forward primer (27f; 5′-AGA GTT TGA TCM TGG CTC AG) and a reverse primer (1492r; 5′-TAC GGY TAC CTT GTT ACG ACT T) (Lane, 1991). Agarose gel electrophoresis confirmed the amplification product as a 1400-bp DNA fragment.16S rDNA sequencing and Phylogenic analysis: Amplicons generated using primer pair 27f-1492r was sequenced using an automatic sequencer system at Macrogene Company (Seoul, Korea). The sequences were compared with those of the NCBI BLAST GenBank nucleotide sequence databases. Phylogenetic trees were constructed by the neighbor-joining method using MEGA version 5.05 software (Tamura et al., 2011). Bootstrap resembling analysis for 1,000 replicates was performed to estimate the confidence of tree topologies.Nucleotide sequence accession numbers: The nucleotide sequences reported in this work have been deposited in the EMBL Nucleotide Sequence Database. The accession numbers are represented in table 5.Statistics: All experiments were conducted in triplicates. Results were evaluated for statistical significance using ANOVA.RESULTSPhysico-chemical parameters of the collected water samples: The physicochemical properties of the collected water samples are reported in table 1. At the time of sampling, the temperature was 10.6°C and pH 7.89. The salinity of the sample, as determined in situ, was 224.70 g/L (22,47% (w/v)). Chemical analysis of water sample indicated that Na +and Cl- were the most abundant ions (table 1). SO4-2 and Mg+2 was present in much smaller amounts compared to Na +and Cl- concentration. Low levels of calcium, potassium and bicarbonate were also detected, often at less than 1 g/L.Characterization of isolates. Morphological and biochemical characteristic feature of halophilic bacterial isolates: Among 52 strains isolated from water of Chott Tinsilt, seven distinct bacteria (A1, A2, A3, A4, B1, B4 and B5) were chosen for further characterization (table 2). The colour of the isolates varied from beige, pale yellow, yellowish and orange. The bacterial isolates A1, A2, A4, B1 and B5 were rod shaped and gram negative (except B5), whereas A3 and B4 were cocci and gram positive. All strains were oxidase and catalase positive except for B1. Nitrate reductase and urease activities were observed in all the bacterial isolates, except B4. All the bacterial isolates were negative for H2S formation. B5 was the only strain positive for mannitol fermentation (table 2).We isolated halophilic bacteria on growth medium with NaCl supplementation at pH 7 and temperature of 30°C. We studied the effect of NaCl, temperature and pH on the growth of bacterial isolates. All the isolates exhibited growth only in the presence of NaCl indicating that these strains are halophilic. The optimum growth of isolates A3 and B1 was observed in the presence of 10% NaCl, whereas it was 15% NaCl for A1, A2 and B5. A4 and B4 showed optimum growth in the presence of 20% and 25% NaCl respectively. A4, B4 and B5 strains can tolerate up to 35% NaCl.The isolate B1 showed growth in medium supplemented with 10% NaCl and pH range of 7–10. The optimum pH for the growth B1 was 9 and they did not show any detectable growth at or below pH 6 (table 2), which indicates the alkaliphilic nature of B1 isolate. The bacterial isolates A1, A2 and A4 exhibited growth in the range of pH 6–10, while A3 and B4 did not show any growth at pH greater than 8. The optimum pH for growth of all strains (except B1) was pH 7.0 (table 2). These results indicate that A1, A2, A3, A4, B4 and B5 are neutrophilic in nature. All the bacterial isolates exhibited optimal growth at 30°C and no detectable growth at 55°C. Also, detectable growth of isolates A1, A2 and A4 was observed at 4°C. However, none of the bacterial strains could grow below 4°C and above 50°C (table 2).Screening of the halophilic enzymes: To characterize the diversity of halophiles able to produce hydrolytic enzymes among the population of microorganisms inhabiting the hypersaline habitats of East Algeria (Chott Tinsilt), a screening was performed. As described in Materials and Methods, samples were plated on solid media containing 10%-25% (w/v) of total salts and different substrates for the detection of amylase, protease, lipase and DNAse activities. However, coagulase activity was determined in liquid medium using milk as substrate (figure 3). Distributions of hydrolytic activity among the isolates are summarized in table 4.From the seven bacterial isolates, four strains A1, A2, A4 and B5 showed combined hydrolytic activities. They were positive for gelatinase, lipase and coagulase. A3 strain showed gelatinase and lipase activities. DNAse activities were detected with A1, A4, B1 and B5 isolates. B4 presented lipase and coagulase activity. Surprisingly, no amylase activity was detected among all the isolates.Screening for biosurfactant producing isolates: Oil spread assay: The results showed that all the strains could produce notable (>4 cm diameter) oil expelling circles (ranging from 4.11 cm to 4.67 cm). The average diameter for strain B5 was 4.67 cm, significantly (P < 0.05) higher than for the other strains.Surface tension and emulsification index (E24): The assimilation of hydrocarbons as the sole sources of carbon by the isolate strains led to the production of biosurfactants indicated by the emulsification index and the lowering of the surface tension of cell-free supernatant. Based on rapid growth on media containing diesel oil as sole carbon source, the seven isolates were tested for biosurfactant production and emulsification activity. The obtained values of the surface tension measurements as well as the emulsification index (E24) are shown in table 3. The highest reduction of surface tension was achieved with B5 and A3 isolates with values of 25.3 mN m−1 and 28.1 mN m−1 respectively. The emulsifying capacity evaluated by the E24 emulsification index was highest in the culture of isolate B4 (78%), B5 (77%) and A3 (76%) as shown in table 3 and figure 2. These emulsions were stable even after 4 months. The bacteria with emulsification indices higher than 50 % and/or reduction in the surface tension (under 30 mN/m) have been defined as potential biosurfactant producers. Based on surface tension and the E24 index results, isolates B5, B4, A3 and A4 are the best candidates for biosurfactant production. It is important to note that, strains B4 and A4 produce biosurfactant in medium containing respectively 25% and 20% (w/v) NaCl.Stability of biosurfactant activities: The applicability of biosurfactants in several biotechnological fields depends on their stability at different environmental conditions (temperatures, pH and NaCl). For this study, the strain B4 appear very interesting (It can produce biosurfactant at 25 % NaCl) and was choosen for futher analysis for biosurfactant stability. The effects of temperature and pH on the biosurfactant production by the strain B4 are shown in figure 4.biosurfactant in medium containing respectively 25% and 20% (w/v) NaCl.Stability of biosurfactant activities: The applicability of biosurfactants in several biotechnological fields depends on their stability at different environmental conditions (temperatures, pH and NaCl). For this study, the strain B4 appear very interesting (It can produce biosurfactant at 25 % NaCl) and was chosen for further analysis for biosurfactant stability. The effects of temperature and pH on the biosurfactant production by the strain B4 are shown in figure 4. The biosurfactant produced by this strain was shown to be thermostable giving an E-24 Index value greater than 78% (figure 4A). Heating of the biosurfactant to 100 °C caused no significant effect on the biosurfactant performance. Therefore, the surface activity of the crude biosurfactant supernatant remained relatively stable to pH changes between pH 6 and 11. At pH 11, the value of E24 showed almost 76% activity, whereas below pH 6 the activity was decreased up to 40% (figure 4A). The decreases of the emulsification activity by decreasing the pH value from basic to an acidic region; may be due to partial precipitation of the biosurfactant. This result indicated that biosurfactant produced by strain B4 show higher stability at alkaline than in acidic conditions.Molecular identification and phylogenies of potential isolates: To identify halophilic bacterial isolates, the 16S rDNA gene was amplified using gene-specific primers. A PCR product of ≈ 1.3 kb was detected in all the seven isolates. The 16S rDNA amplicons of each bacterial isolate was sequenced on both strands using 27F and 1492R primers. The complete nucleotide sequence of 1336,1374, 1377,1313, 1305,1308 and 1273 bp sequences were obtained from A1, A2, A3, A4, B1, B4 and B5 isolates respectively, and subjected to BLAST analysis. The 16S rDNA sequence analysis showed that the isolated strains belong to the genera Halomonas, Staphylococcus, Salinivibrio, Planococcus and Halobacillus as shown in table 5. The halophilic isolates A2 and A4 showed 97% similarity with the Halomonas variabilis strain GSP3 (accession no. AY505527) and the Halomonas sp. M59 (accession no. AM229319), respectively. As for A1, it showed 96% similarity with the Halomonas venusta strain GSP24 (accession no. AY553074). B1 and B4 showed for their part 96% similarity with the Salinivibrio costicola subsp. alcaliphilus strain 18AG DSM4743 (accession no. NR_042255) and the Planococcus citreus (accession no. JX122551), respectively. The bacterial isolate B5 showed 98% sequence similarity with the Halobacillus trueperi (accession no. HG931926), As for A3, it showed only 95% similarity with the Staphylococcus arlettae (accession no. KR047785). The 16S rDNA nucleotide sequences of all the seven halophilic bacterial strains have been submitted to the NCBI GenBank database under the accession number presented in table 5. The phylogenetic association of the isolates is shown in figure 5.DICUSSIONThe physicochemical properties of the collected water samples indicated that this water was relatively neutral (pH 7.89) similar to the Dead Sea and the Great Salt Lake (USA) and in contrast to the more basic lakes such as Lake Wadi Natrun (Egypt) (pH 11) and El Golea Salt Lake (Algeria) (pH 9). The salinity of the sample was 224.70 g/L (22,47% (w/v). This range of salinity (20-30%) for Chott Tinsilt is comparable to a number of well characterized hypersaline ecosystems including both natural and man-made habitats, such as the Great Salt Lake (USA) and solar salterns of Puerto Rico. Thus, Chott Tinsilt is a hypersaline environment, i.e. environments with salt concentrations well above that of seawater. Chemical analysis of water sample indicated that Na +and Cl- were the most abundant ions, as in most hypersaline ecosystems (with some exceptions such as the Dead Sea). These chemical water characteristics were consistent with the previously reported data in other hypersaline ecosystems (DasSarma and Arora, 2001; Oren, 2002; Hacěne et al., 2004). Among 52 strains isolated from this Chott, seven distinct bacteria (A1, A2, A3, A4, B1, B4 and B5) were chosen for phenotypique, genotypique and phylogenetique characterization.The 16S rDNA sequence analysis showed that the isolated strains belong to the genera Halomonas, Staphylococcus, Salinivibrio, Planococcus and Halobacillus. Genera obtained in the present study are commonly occurring in various saline habitats across the globe. Staphylococci have the ability to grow in a wide range of salt concentrations (Graham and Wilkinson, 1992; Morikawa et al., 2009; Roohi et al., 2014). For example, in Pakistan, Staphylococcus strains were isolated from various salt samples during the study conducted by Roohi et al. (2014) and these results agreed with previous reports. Halomonas, halophilic and/or halotolerant Gram-negative bacteria are typically found in saline environments (Kim et al., 2013). The presence of Planococcus and Halobacillus has been reported in studies about hypersaline lakes; like La Sal del Rey (USA) (Phillips et al., 2012) and Great Salt Lake (Spring et al., 1996), respectively. The Salinivibrio costicola was a representative model for studies on osmoregulatory and other physiological mechanisms of moderately halophilic bacteria (Oren, 2006).However, it is interesting to note that all strains shared less than 98.7% identity (the usual species cut-off proposed by Yarza et al. (2014) with their closest phylogenetic relative, suggesting that they could be considered as new species. Phenotypic, genetic and phylogenetic analyses have been suggested for the complete identification of these strains. Theses bacterial strains were tested for the production of industrially important enzymes (Amylase, protease, lipase, DNAse and coagulase). These isolates are good candidates as sources of novel enzymes with biotechnological potential as they can be used in different industrial processes at high salt concentration (up to 25% NaCl for B4). Prominent amylase, lipase, protease and DNAase activities have been reported from different hypersaline environments across the globe; e.g., Spain (Sánchez‐Porro et al., 2003), Iran (Rohban et al., 2009), Tunisia (Baati et al., 2010) and India (Gupta et al., 2016). However, to the best of our knowledge, the coagulase activity has never been detected in extreme halophilic bacteria. Isolation and characterization of crude enzymes (especially coagulase) to investigate their properties and stability are in progress.The finding of novel enzymes with optimal activities at various ranges of salt concentrations is of great importance. Besides being intrinsically stable and active at high salt concentrations, halophilic and halotolerant enzymes offer great opportunities in biotechnological applications, such as environmental bioremediation (marine, oilfiel) and food processing. The bacterial isolates were also characterized for production of biosurfactants by oil-spread assay, measurement of surface tension and emulsification index (E24). There are few reports on biosurfactant producers in hypersaline environments and in recent years, there has been a greater increase in interest and importance in halophilic bacteria for biomolecules (Donio et al., 2013; Sarafin et al., 2014). Halophiles, which have a unique lipid composition, may have an important role to play as surface-active agents. The archae bacterial ether-linked phytanyl membrane lipid of the extremely halophilic bacteria has been shown to have surfactant properties (Post and Collins, 1982). Yakimov et al. (1995) reported the production of biosurfactant by a halotolerant Bacillus licheniformis strain BAS 50 which was able to produce a lipopeptide surfactant when cultured at salinities up to 13% NaCl. From solar salt, Halomonas sp. BS4 and Kocuria marina BS-15 were found to be able to produce biosurfactant when cultured at salinities of 8% and 10% NaCl respectively (Donio et al., 2013; Sarafin et al., 2014). In the present work, strains B4 and A4 produce biosurfactant in medium containing respectively 25% and 20% NaCl. To our knowledge, this is the first report on biosurfactant production by bacteria under such salt concentration. Biosurfactants have a wide variety of industrial and environmental applications (Akbari et al., 2018) but their applicability depends on their stability at different environmental conditions. The strain B4 which can produce biosurfactant at 25% NaCl showed good stability in alkaline pH and at a temperature range of 30°C-100°C. Due to the enormous utilization of biosurfactant in detergent manufacture the choice of alkaline biosurfactant is researched (Elazzazy et al., 2015). On the other hand, the interesting finding was the thermostability of the produced biosurfactant even after heat treatment (100°C for 30 min) which suggests the use of this biosurfactant in industries where heating is of a paramount importance (Khopade et al., 2012). To date, more attention has been focused on biosurfactant producing bacteria under extreme conditions for industrial and commercial usefulness. In fact, the biosurfactant produce by strain B4 have promising usefulness in pharmaceutical, cosmetics and food industries and for bioremediation in marine environment and Microbial enhanced oil recovery (MEOR) where the salinity, temperature and pH are high.CONCLUSIONThis is the first study on the culturable halophilic bacteria community inhabiting Chott Tinsilt in Eastern Algeria. Different genera of halotolerant bacteria with different phylogeneticaly characteristics have been isolated from this Chott. Culturing of bacteria and their molecular analysis provides an opportunity to have a wide range of cultured microorganisms from extreme habitats like hypersaline environments. Enzymes produced by halophilic bacteria show interesting properties like their ability to remain functional in extreme conditions, such as high temperatures, wide range of pH, and high salt concentrations. 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The author is an associate professor in the Faculty of Social and Cultural Studies at Kyushu University, Japan. He got his Ph. D from the Department of Social and Economic Geography at Lund University, Sweden. His main research interests address regional structure, urban policies, and regional and environmental planning. He also teaches GIS at Kyushu and Nagasaki Universities. His recent works on the aforementioned research themes include Tokyo: satellites and GIS for the new capital" (co-author, Sistema Terra, 1997), "A note on suitable cities: From the viewpoint of regional structure" (Comprehensive Environmental Studies, 1998), "A sustainable city or technopolis?: Technical innovation in environmental coexistence in Nagasaki, Japan" (in K. Kobayashi et al., Local Knowledge and Innovation, 1999)

Background. The Planetary Health Report Card (PHRC) was developed by medical students in the USA as a metric-based scorecard and institutional advocacy tool for planetary health (PH), with respect to five categories: Curriculum, Community Engagement, Student Leadership, Research, and Campus Sustainability. The PHRC has expanded into a global initiative, although its use by faculties in low- and middle-income countries (LMICs) has been very limited. Objectives. To assess perceptions at the Faculty of Health Sciences (FHS) of the University of Cape Town (UCT) about PH and sustainable healthcare (SH); and perceptions of the barriers and opportunities for integrating PH and SH into curricula in the UCT FHS. Methods. A PHRC was completed for the UCT FHS by means of interviews with key educators. Interview summaries, and scored report cards (where applicable), were shared for validity checking before compilation of the UCT FHS summary report. Results. Thirty-nine interviews were conducted, 31 of them with key educators representing nine academic departments. Twenty- three graded report cards were completed with those engaged in PH and SH activities. The PHRC category scores ranged from a grade of D minus (20%) for Student Leadership to a C grade for Curriculum (54%), with an overall grade of C minus (42%). Education about PH and SH in the UCT FHS is seen as increasingly important yet insufficient. Curriculum overload, “siloed” learning, and poor understanding among educators were perceived as key barriers. PH and SH were proposed as cross- cutting curricular themes for all health sciences disciplines in the UCT FHS. More community engagement, student leadership development, collaborative research, and campus sustainability interventions were recommended in the other PHRC categories. Conclusion. The PHRC provides a baseline assessment of PH and SH in a faculty of health sciences in a LMIC contributing towards greater environmental accountability. It should be repeated regularly at the UCT FHS to measure and evaluate progress in integrating PH and SH into transformed curricula, engagement with the communities it serves, development of student leadership, in ch, and campus sustainability.

Professor Arkady Sokolov, Ph. D. (Pedagogy) is a prominent scholar. The author highlights themes and publications unique for Sokolov: the future for libraries, library science and bibliography, humanism, intelligencia and library intellectuals, social informatics, social communications, philosophy of information. In his works, prof. Sokolov gives his special attention to the library profession, librarians, library education, the libraries on the whole. “Retrospektiva…” digest are A. Sokolov’s special project.The author also reflects on Sokolov’s innovative academic social initiatives: in 1967-1984 he headed the first in the nation informatics chair In Leningrad State Institute of Culture; founded St. Peterburg library society, the first one inRussia. The Professor’s giant flock numbers 44 scientists.Sokolov’s biographical information is given; the journals where he is an editorial board member are named; disciplines in which he delivers lectures; his titles are named. Arkady Sokolov’s outstanding personality is also depicted.In conclusion, the main bibliography (56 titles) is given.

This study was conducted to determine the effect of the types of organic solvents (Ethanol, Methanol, Diethyl ether, Acetone and water) on the amount of bio-products derived from two genus of cyanobacteria (Anabaena sp. Tu 65 and Nostoc sp. Tu 69) who were isolated and growth on selective media ASM-1 under temperature at (26) °C and pH (7.6) under continuous lighting intensity (2500) Lux for 30 days. The growth were measured by optical density by spectrophotometer at wave length 436 nm. The daily growth of the genus Anabaena sp. Tu 65 showed higher than that of the genus Nostoc sp. Tu 69.Extractionby organic solvents shown that the Methanol is the best solvent for extraction of bio-products from the two genus followed by Ethanol, Diethyl ether, Acetone and water respectively.
 Identification the toxic compounds in the bio-products by HPLC_MS technique shown that the bio-products from the genus Anabaena sp. Tu 65, the presence of neurotoxin (anatoxin a (s)) as well as the presence of the compound ADDA (3-amino-9-methoxy-2,6,8-trimethyl-10-phenyldeca-4,6-dienoic acid), one of the key parts for all types of Microcystins which considered as important of liver toxins produced by cyanobacteria, which, as the spectrum readings showed the presence of hepatic toxin [D-Asp3, Dha7] MCYST-LR is one of the types of Microcystins.
 While the bio-products from the genus Nostoc sp. Tu 69 shown the presence of the compound (MCYST-YM (O)) which also one of the types of liver toxin Microcystin, as well as the presence of another hepatic toxin [D-Asp3, Dha7] MCYST-LR, whichis another type of Microcystins too, as well as the presence of neurotoxin Anatoxin a( s),also the probability of the presence of another neurotoxin Anatoxin, which appeared in the spectrum readings.

In this study, a method for the determination of eight biogenic amines (BAs), including tyramine (Tyr), 2-phenylethylamine (2-Phe), histamine (His), tryptamine (Trp), spermidine (Spd), spermine (Spm), cadaverine (Cad), and putrescine (Put), in crab was established using ultra-performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS), using a magnetic solid-phase extraction (MSPE) pretreatment, without derivatization, and the content changes in regard to these eight biogenic amines in the traditional Chinese dish, pickled swimming crabs, were investigated. The samples were purified via MSPE, using C nanofiber-coated magnetic nanoparticles (Fe3O4@C-NFs) as sorbents. The experimental variables involved in the MSPE, including the solution pH, adsorption and desorption time, adsorbent usage, and type and volume of the eluent, were investigated and optimized. Method validation indicated that the developed method showed good linearity (R2 > 0.995); the average recovery rates were 84.7% to 115%, with the intra-day and inter-day relative standard deviations (RSD, n = 6) ranging from 3.7% to 7.5% and 4.2% to 7.7%, respectively. The limit of detection (LOD) and limit of quantification (LOQ) for the eight BAs were 0.1 mg/kg~1.0 mg/kg and 0.3 mg/kg~3.0 mg/kg, respectively. Finally, this method was applied to determine the changes in the eight biogenic amines in pickled swimming crabs (Portunus trituberculatus) during storage at 20 °C and 400 BAC. Among the BAs evaluated, Cad, Put, and Tyr were the predominant amines formed during storage. The final content of Cad, Put, and Tyr reached 22.9, 20.1, and 29.0 mg/100 g at 4 °C for 16 d, and 47.1, 52.3, and 72.0 mg/100 g at 20 °C for 96 h, respectively. The results from this study can be used to expand the application range of magnetic materials in biogenic amine pretreatment and to strengthen the quality control of the traditional Chinese dish, pickled swimming crabs.

Abstract This study investigates the socio-economic impact of terrorism in Nigeria. Terrorism is a worldwide phenomenon confronting all states in the international system. The attacks perpetrated by the sect have resulted in the loss of thousands of lives and properties worth billions of naira. In investigating the socio-economic impact of terrorism in Nigeria, the study employs the qualitative approach and utilises the case study research design. The study retrieves data from secondary sources including books, book chapters, journal articles, and newspapers. To analyse the data retrieved, the study adopts thematic analysis to segment the data retrieved into themes in accordance with the objective of the study. Findings of the study reveal that terrorism in Nigeria particularly the activities of the Boko Haram sect have stalled education in affected areas, resulted in large numbers of deaths and the destruction of infrastructure and livelihood of affected individuals. The study recommends that security should be reinforced through the presence of military to deter the resurrection of the terrorist sect when it has been defeated and the government should seek collaboration with organisations in the private sector to rebuild affected areas. Résumé Cette étude examine les impacts socio-économiques du terrorisme au Nigéria. Le terrorisme est un phénomène mondial auquel sont confrontés tous les États du système international. Les attaques perpétrées par la secte ont entraîné la perte de milliers de vies et de propriétés valant des milliards. Pour interroger sur les impacts socio-économiques du terrorisme au Nigéria, l'étude utilise l'approche qualitative et la conception de l'étude de cas. L'étude récupère des données à partir de sources secondaires, notamment des livres, des chapitres de livres, des articles de revues et des journaux. Pour analyser les données récupérées, l'étude adopte une analyse thématique pour segmenter les données en thèmes conformément à l'objectif de l'étude. Les conclusions de l'étude révèlent que le terrorisme au Nigéria, en particulier les activités de la secte Boko Haram, a paralysé l'éducation dans les zones touchées avec un grand nombre de morts et la destruction des infrastructures et des moyens de subsistance de la population. L"étude recommande que la sécurité soit renforcée par la présence d"armées pour dissuader la résurrection de la secte terroriste après sa défaite et la collaboration du gouvernement avec des organisations du secteur privé pour reconstruire les zones touchées.  

Aim/Purpose: The purpose of this research is to explore and describe the role of care and socio-emotional learning in the first year of doctoral study. In particular, understanding the nature of the caring relationships doctoral students experience and their development of effective socio-emotional capacity are the primary foci of this study. It may provide institutions with data necessary to add specific supports to graduate orientation programs and/or introductory doctoral courses that will mitigate problems these beginning students face and lead to greater success and quality of life. Background: This study examines the caring relationships of students in two education doctoral programs using the features of socio-emotional learning (SEL), the ethics of care, and learning care to understand the effects of caring relationships on first year doctoral students and to explore how their subsequent use of socio-emotional skills impacts success and quality of life. Methodology: The study used a phenomenological methodology focusing on the initial experiences of returning adult doctoral students in the field of education during the first semester of their studies. A total of seven students from two different cohorts of Ph. D. and Ed. D. programs were interviewed. A deductive process was subsequently pursued, applying the central concepts of care and socio-emotional learning to the data as categories, resulting in the findings of this study. Contribution: As the importance of care is often trivialized, particularly in the most advanced levels of education, it is important for doctoral programs to examine what can be done to enhance relationship-building in order to increase student success and quality of life. This study calls for more attention to care in doctoral study. Findings: Participant responses identified self-awareness as key to how they managed stress, maintained motivation and academic discipline, organized their time in order to accomplish tasks and meet responsibilities, and set goals. Participants attributed their academic discipline and ability to handle stress to perseverance, drive, and work ethic. These doctoral students were very conscious of the decisions they made and the reasons behind these decisions. In their discussion of the relationships that supported them throughout their study, they clearly identified emotions triggered by these relationships, and they discussed how those who cared for them helped them to recognize their own strengths and gain more self-confidence. The presence of caring was clear as participants’ reasons for engaging in doctoral study were often rooted in their care for others in their family and their caring about marginalized populations in society. Recommendations for Practitioners: Examining the nature of the care doctoral students receive and their development of effective socio-emotional abilities may provide institutions with data necessary to add specific supports to graduate orientation programs and/or introductory doctoral courses that will mitigate problems these beginning students face, leading to future success. Recommendation for Researchers: While most research and instruction involving socio-emotional learning has focused on K-12 learners, this study investigates how the experiences of doctoral students reflect the importance of addressing the emotional side of learning at all levels of education. Despite the plethora of extant literature concerning doctoral student experiences related to socialization, the significance of socio-emotional learning, and the importance of care as a facilitator of learning, there are gaps in the literature connecting doctoral students in the first stages of their studies to affective learning. This study will fill that gap and opens the door to future qualitative studies, elaborating the lived experiences of caring relationships and socio-emotional learning. Additionally, these initial qualitative studies provide direction to quantitative researchers looking for ways to measure these concepts. Impact on Society: Elements of care, especially as they relate to socio-emotional learning correlate strongly with successful outcomes in educational contexts. To the extent that doctoral students and doctoral programs experience greater success and increased satisfaction and quality of life, this research will have significant societal impact. Future Research: As a qualitative study using inductive and deductive approaches, it is important for future research to translate the themes and concepts of this study into measurable, quantifiable, and replicable units. This translation will facilitate the generalizability of our findings. The application of the concepts of care and socio-emotional learning to first year doctoral students opens the door to additional qualitative approaches as well, which will greatly increase our understanding of what these concepts mean as they are lived-out.

Background. In recent years, there has been an increasing interest in the phenomenon of lyricism in Ukrainian musicology. This growth is more so conspicuous given that in the Soviet Musical Encyclopedia this term was omitted, and now it is the pivot of various researches, up to Ph. D. dissertations [7]. There is also a tendency to use this term regarding not only to vocal, but to instrumental music as well, including works lacking noticeable traits of lyrical mood. Works devoted to literature contain valuable information on lyricism, including remarks on the apprehension of this phenomenon in France. On the other side, there are no special researches devoted to incarnation of lyricism in different cultures of pop singing based on their comparison. The objective of research is to reveal specifics of lyricism in Ukrainian and French songs and to apply the results received to the of work with the students of Popular Music and Jazz Department. Methods. To reach that objective, eight songs have been considered. Although these songs belong to different cultures (Ukrainian and French), they are bound the similar plot basics; they pertain to love poetry, and each of them in some way embodies themes of detachment, remembrance, confession of love etc. The main aspect taken into consideration was whether the song leans towards open expression of feeling or no, when the feelings of lyrical hero (even very strong) are kept inside him; and in what way that correlates with the song being French or Ukrainian. Results. Having considering these songs, we were able to state similarities and differences between them. The song “Kohana” (“Beloved”) combines lyrical extraversion with optimistic mood. Plentiful hints about future allow understanding of this song as an open declaration of joy, caused by mutual love. Hence, firm belief in happy future should be represented with active and strong voice. Contrary to that, the song “Ochi voloshkovi” (“Cornflower-blue Eyes”) directs into the past as a reminiscence of pleasant days of happiness. Clearly defined initial nostalgic mood gradually shifts into a tragic one as it becomes clear, that hero’s hopes for future cannot be fulfilled. In this case, emphatic affirmative intonation would be perceived as an illusion. The song “Kvity romena” (“Flowers of chamomile”) represents another pole of Ukrainian songs as it lacks tragic mood or confessions. The text of the song hasn’t any conflicts, and that causes “unproblematic” performing tone. The poetic text differs from the previous two songs as it relies less on a parallelism between nature and state of the soul and uses more complicated methods, such as assonances and more elaborated system of metaphors (the chamomile, initially standing for the soul of the hero, later becomes a symbol of love). Overall, this song characterizes not by “experiencing”, but by representation. The main motive of the song “Dead Leaves” (“Les feuilles mortes”) is remembrance, but not only of the past times, but also of the song, which the lyrical hero used to sing with his beloved. The structure of “Les feuilles mortes” is quite original as it consists of two parts: introduction with clearly defined speech basis, and the main part, where vocal plays bigger role. This reminds of traditional opera form “Recitativo e Aria”, where both parts might be not joined by the same thematic material. “Les feuilles mortes” doesn`t bear conflict as the idea that love cannot be returned is accepted rather calmly, without outburst of lamentation. The “flow” of music is rather smooth as it lacks sudden modulations and unusual intonations; that creates an atmosphere of tranquil reminiscence. The opposite attitude about love is enshrined in the song “The snow is falling” (“Tombe la neige”), where the snow stands for cold and dispassionate reality as well as of the state of soul of lyrical hero. The unity of these meanings is emphasized in the words “Blanche solitude” (“White solitude”), and their opposition – in the contrast of desperate cry and indifferent descent of snow. The melody of song is quite special as it has a pause after each line that creates the effect of woeful sighs. The simplicity of the harmony emphases relentless despair of the hero; thus, the song demonstrates an example of “limitation of expressive possibilities”. In the song “Nathalie” lyricism is combined with narrative features as the song is, basically, the recital of the story of the visit of the French tourist to the Moscow during the Soviet era. Here, the sound-painting is used: to portray the party of Russian students, the orchestra resembling Russian folk instruments is used and gradual acceleration of the tempo creates an allusion to traditional Russian dances. In the last part of the song potentially dramatic phrase “My life appears empty” doesn’t cause culmination as it would do on Ukrainian song – solitude taken just as fact of reality. The conclusion is drawn that the lyricism of Ukrainian songs is mostly inclined to the “pure” type with its open emotionality, and that of French songs – by the synthesis with another moduses of expression (such as narrative, pondering, reminiscence etc.). This difference is visible even more due to the similarities of the poetic texts. The Ukrainian songs usually have more opened form of emotional expression, with illusion of “experiencing”, while the French songs are marked by quite reserved feelings or usage of the change of their intensity as a mean of expression. In the latter case, expressiveness is reached often by another means, which often require more intellectual perception (complicated and refined poetic symbols, music closely following the text, poetic techniques etc.). Although of considered song groups includes those seemingly negating these conclusions (“Kvity romena”, “Tombe la neige”), they can be regarded as exceptions from the general rule that is inevitable and natural in the functioning of “living” artistic culture. Nevertheless, both national cultures share understanding of lyricism as expression of feelings. Comprehension of specifics of lyricism in Ukrainian and French songs will allow the students in their practical work to choose the degree of revealing of emotions suitable to the essence of the performed songs; that, subsequently, will result in the performance being stylistically loyal. At the same time, similarities in interpretation of lyricism allow to overcome any cultural or language barriers.