STUDY OF INTERMOLECULAR INTERACTIONS THROUGH EXCESS THERMOACOUSTIC PARAMETERS IN BINARY MIXTURES OF PROPYLENE GLYCOL AND HEXANOL FOR HEAT TRANSFER APPLICATIONS

Volume 76, May 2020
doi: 10.21506/j.ponte.2020.5.4
View Abstract Hide Abstract   |   Download PDF
Abstract: The investigation on relative strength and the nature of the intermolecular interaction have been done using Ultrasonic method. In our study Density, viscosity, Ultrasonic sound velocities are estimated, further thermo acoustical parameters and their excess values such as, excess adiabatic compressibility (KsE), excess intermolecular free length (LfE),excess free volume (VfE), excess Gibb’s free energy (GE), excess enthalpy (HE) and excess internal pressure (πE) have been measured for propylene glycol in Hexanol for various mole fractions. These results have been explained on the basis of intermolecular interactions between the components in the liquid mixture and correlations among the parameters are discussed. The study indicated that intermolecular hydrogen bond formation is stronger for (0.8 PG+0.2 Hexanol) molar ratio of the binary mixture liquid complex compare to that of other concentrations and hence this mixture is strongly recommended in therapeutical drugs, pharmaceutical industry and for the high heat transferability applications.

Author(s): K. Sreelatha, Sk. Suriya Shibab, S. Sreehari Sastry


PERCEIVED ORGANISATION SUPPORT: APPLYING MINDFUL WORK PRATICES AND ERADICATING EMPLOYEE DEHUMANISATION IN THE WORKPLACE

Volume 76, Apr 2020
doi: 10.21506/j.ponte.2020.4.10
View Abstract Hide Abstract   |   Download PDF
Abstract: This study assesses academics perceptions regarding the extent to which the organisation values and cares for them. Inter correlations amongst sub-dimensions of perceived organisational support, biographical correlates and perceptions of the dimension are based on inferential and descriptive statistics. The sample comprised of academics from the four colleges at the University of KwaZulu-Natal and was drawn using cluster sampling. The expected sample was 292 and the sample that was achieved was a 262 using. Data was collected using a questionnaire whose psychometric properties of validity and reliability were statistically assessed using Factor Analysis and Cronbach's Alpha respectively. It is evident that the greatest level of improvement is needed in perceived organisational support as it has the lowest mean score value (Mean = 2.858). Perceived organisational support assesses employees perceptions of various aspects of support from their organisation. The study also shows that there is a significant difference in the perceived organisational support of academics varying in biographical profiles (age, marital status, position, tenure, gender) and college respectively.

Author(s): Sanjana Brijball Parumasur, Mbalenhle Bridget Dlamini


TOWARDS PUBLIC PARTICIPATION IN RELIEF RESPONSE\\r\\nDURING THE COVID-19 PANDEMIC IN THE PHILIPPINES

Volume 76, May 2020
doi: 10.21506/j.ponte.2020.5.5
View Abstract Hide Abstract   |   Download PDF
Abstract: The experience of COVID-19 Pandemic in the Philippines necessitated lockdowns and\r\ncommunity quarantines. This minimized mobility and resulted in the loss of income among\r\nfamilies below the poverty line making it difficult for them to provide for their daily needs such as food and medicine. These affected families, therefore, relied on relief assistance from the government and other private instrumentalities. But relief operation in this time of pandemic is challenged by limited manpower who will carry on the relief response. Hence, this study was\r\nconducted to determine the dimensions of public participation in relief response during the\r\nCOVID-19 Pandemic in the Philippines. The study utilized a data reduction process using\r\nexploratory factor analysis. To generate data, a total of 250 respondents were conveniently\r\nchosen to answer in the survey instrument with sixty-three items. Data reduction analysis\r\nrevealed that there are eleven dimensions of public participation on relief response based on the\r\nEigenvalues of not less than 0.4. These are the sense of duty, presence of enabling environment,\r\nintegration of disaster response in the educational curriculum, practical and technical capability\r\nbuilding, value for nationalism, provision of material support, accurate information and\r\neducation campaign, resource mobilization, values-orientation, availability of sophisticated\r\ndisaster response equipment, and readiness for collaboration. If these dimensions are considered\r\nin policymaking, more and more citizens will be greatly motivated to participate in the relief\r\nresponse in times of disasters like the COVID-19 pandemic.

Author(s): Moises C. Torrentira Jr.

RESEARCH OF INSECT BIODIVERSITY AND ITS DISTRIBUTION IN THE AREA OF OUED SOUF

Volume 76, May 2020
doi: 10.21506/j.ponte.2020.5.1
View Abstract Hide Abstract   |   Download PDF
Abstract: Our research is a contribution to the aims of insects for Deeping our quantitative and\r\nqualitative knowledge in Oued Souf area. Oued Souf situated in the northeast of Algerian\r\nSahara, with a mild winter and a Saharan climate. For the realization of our study, we\r\nfollowed many traps. Sampling captures 180 species divided into 10 orders of Insects. In the\r\nall stations, the census allowed to have 2367 individuals divided into 77 families. The most\r\ndominant order is that of Coleoptera with 781 individuals and 57 species and 17 families,\r\nfollowed by the order of Hymenoptera with 754 individuals distributed over 36 species and 15\r\nfamilies, the order of Diptera with 621 individuals distributed on 32 species and 16 families.\r\nThe rest of the insects distributed in seven orders in small proportions compared to the first\r\nthree. The specific composition of the insects showed the dominance of Musca domestica\r\n(Muscidae), Pheidole pallidula, Camponotus thoracicus, Cataglyphis bombycinus\r\n(Formicidae). Pimelia confusa (Tenebrionidae). The calculation of the specific diversity gives\r\na value of \"5.34\" bit following an equitability of 73.25%, reflecting a significant structuring of\r\nthe environment. Calculate of similarity index prove that there is an important dissimilarity of\r\necological conditions between the stations.

Author(s): Selmane Mehdi, Ben Atouss Iman, Tliba safa, Benslama Mohamed, Marnich Faiza


CHEMICAL COMPOSITION OF THE AQUEOUS EXTRACT OF HALOXYLON ARTICULATUM BOISS AND ITS EFFECTS ON HEPATOTOXICITY IN NICKEL INTOXICATED RATS

Volume 76, Mar 2020
doi: 10.21506/j.ponte.2020.3.22
View Abstract Hide Abstract   |   Download PDF
Abstract: This work was conducted to study the hepatoprotective role of the aqueous extract of Haloxylon artimatum boiss on nickel-induced hepatotoxicity. A dose of 0.2% was administered to wistar rats by gavage for 90 days. A chemical analysis of the extract was performed prior to its oral administration to rats at a dose of 300 mg/kg/day for 20 days. The High pressure liquid chromatography (HPLC) identified 82% of the plants compounds with the majority of Tricyclene present. "Ni" intoxication disrupted liver function and increased blood glucose levels by 2.88 g/l ;serum urea 0.80 g/l, and creatinine 18 mg/l, GER = 70 IU/l, TGP= 68 IU/l ; total bulirebin 140.2 mg/dl, g/l. The levels of markers of peroxidation of cholesterol lipids 2.45, triglycerides 1.68 g/l, total proteinemia 11.2g/dl, albumin 7.8 g/dl . Treatment with plant extract reduced alterations in liver markers, decreased lipid peroxidation markers, increased the cascade of antioxidants. These results show that the aqueous extract has a hepatoprotective effect.

Author(s): Grele karima, Adli Djallaleddine Houari, Khaled, Slimani Miloud


PESTICIDE USE AND RISK PERCEPTIONS FOR HUMAN HEALTH AND THE ENVIRONMENT: A CASE STUDY OF ALGERIAN FARMERS

Volume 76, May 2020
doi: 10.21506/j.ponte.2020.5.2
View Abstract Hide Abstract   |   Download PDF
Abstract: In Algeria, market gardeners consider the use of pesticides as necessary to manage pests, diseases and weeds during cultivation under greenhouses, in an effort to reduce or eliminate yield losses and maintain a high level of productivity. Despite their popularity and extensive use, pesticides may pose a significant threat to human health and the environment.The purpose of this study is to evaluate market gardeners’ practices and attitudes with regard to pesticide use and to assess the impact of pesticides on human health and the environment. A survey was carried out in Ain Naga (East Ziban) and Doucen (Ziban West). 96 vegetable farmers randomly selected were interviewed from October 2016 to December 2017. The survey revealed that a total of 143 pesticide products were used by farmers surveyed, representing 70 different active substances. According to CLP classification, the majority of active substances have an acute and/or chronic effects for human health and could cause great harm for ecosystems and target and non-target organisms. According to the WHO classification, four actives substances are considered as highly (WHO class Ib) and one extremely (WHO class Ia) hazardous. However, exposure is particularly critical for abamectin (WHO class Ib), since it is the most commonly used by the majority of farmers (79%). Over 60% of the farmers use pesticides lack knowledge and risk perceptions. More than 50% of the farmers presented safety issues when spraying pesticides. While 72% of the farmers encountered at least one symptom of severe poisoning due to pesticide use. Market gardeners are highly exposed to a wide range of pesticides, with a potential effect on their health.

Author(s): Soudani Nafissa, Belhamra Mohammed, Toumi Khaoula


MUSCULOSKELETAL DISORDERS AND INSOMNIA SEVERITY AMONG NURSES

Volume 76, Apr 2020
doi: 10.21506/j.ponte.2020.4.15
View Abstract Hide Abstract   |   Download PDF
Abstract: This study was performed to determine the musculoskeletal disorders and insomnia severity among nurses working in a training and research hospital. This descriptive study was carried out in Corum province between January-March 2020 with 293 nurses aged with ≥18 years. Data was collected via a questionnaire form including socio-demographics, Cornell Muscle Skeletal Disorders Questionnaire and Insomnia Severity Index. In analysis percentage, mean, independent t test and Chi-square test were used. In evaluations p<0,05 value was considered statistically significant. In our study, 66,6% were aged ≤35 years and 77,8% were women. Waist was the body area where nurses experience the most musculoskeletal disorders. The severity of the discomfort was mostly moderate in painful areas. The areas with the most severe pain were found in the neck, back and waist areas. There was a significant difference according to gender, educational status, marital status, seniority, types of working and presence of chronic diseases for musculoskeletal disorders (p<0,05). It was determined that the threshold level of insomnia was significantly higher among nurses those with musculoskeletal disorders in other body regions except the knee and lower leg region (p<0,05). In our study, it was determined that musculoskeletal disorders were common in the upper body areas and the severity of insomnia was at the threshold level. Training of nurses on ergonomics and encouraging exercises should be applied at work to reduce the frequency of musculoskeletal disorders. Keywords: Musculoskeletal Diseases, insomnia, nurses

Author(s): Remziye CICI, Gülay YILMAZEL


THE ROLE OF DEMOGRAPHIC VARIABLES IN SOCIAL UPLIFTMENT OF WOMEN THROUGH MICROFINANCE INTERVENTION

Volume 76, Apr 2020
doi: 10.21506/j.ponte.2020.4.8
View Abstract Hide Abstract   |   Download PDF
Abstract: Social empowerment is one of the powerful indicators of human development. There have been many studies focusing on the economic impact of microfinance intervention on its beneficiaries. Measuring economic impacts are easier as these are quantitative in nature. However, to gauge the full potential of this program the social impact needs to be researched in depth. Through this study, the researchers have tried to investigate five social impact variables of microfinance namely – Decision Making, Health, Empowerment, Social Communication and Crisis Management. The research also aims to study the impact and relation of independent demographic variables on the social variables identified. Data has been collected from 270 SHG members through a structured questionnaire. Statistical techniques like Correlation, Chi- square test, KMO and Barlett’s Test, Cronbach Alpha, ANNOVA and Scheffe’s Test has been used for the analysis of data collected. It has been observed that there is significant effect of demographic factors on the social impact variables. Positive correlation is noted among the social variables identified. The paper concludes that microfinance has positive social impacts on its members and their communities. The demographic variables such as age, education level and source of loan have a positive correlation on social impact variables and hence such factors need to be given due attention while formulating any development program.

Author(s): Shreya Patel, Amar Nath Jha


CHARACTERIZATION OF PROBIOTIC LACTIC ACID BACTERIA ISOLATED FROM ALGERIAN CAMEL MILK INVITRO

Volume 76, Apr 2020
doi: 10.21506/j.ponte.2020.4.19
View Abstract Hide Abstract   |   Download PDF
Abstract: A total of 78 lactic acid bacteria (LAB) were isolated from spontaneously fermented camel milk samples and investigated in vitro for their characteristics as potential new probiotic strains. Only nine LAB were active against pathogenic bacteria and imply adhesive properties. The presumed probiotic strains were evaluated for their tolerance to low pH and to 0.3% and 0.5% of bile salts. None of them was able to develop at pH 2 but all showed high resistance to pH 3 compared to the optimal (pH 6.2). Furthermore, all strains showed good bile tolerance. Based on their morphological, physiological and some biochemical characteristics, probiotic strains were assigned to the genus Leuconostoc. Nucleotide sequences of their 16S rRNA showed 94 to 99% similarity to Leuconstoc mesenteroides. The safety results of all nine strains showed the absence of ?. haemolytic activity, gelatinase, DNase, and coagulase. From 14 antibiotics tested, all strains resisted to five only: nalidixic acid, colistin, cefixime, oxacillin and fusidic acid. Overall results indicated that Leuconostoc mesenteroides strains isolated from camel milk could serve as promising probiotic candidates.

Author(s): Asma Bouguerra, Daoud Harzallah, Ina Salwany Md Yasin, Santha Silvaraj, Sabrina Bakli, Nour El Houda Rabhi


EXPLORATION OF PARENTS APPREHENSIONS ABOUT EMOTIONAL AND SOCIAL DEVELOPMENT OF THEIR CHILDREN IN EVER CHANGING DIGITAL WORLD

Volume 76, Apr 2020
doi: 10.21506/j.ponte.2020.4.18
View Abstract Hide Abstract   |   Download PDF
Abstract: Children are spending most of their time in the world which is dominated by digital devices or gadgets such as iPads, iPhones, computer screens, and TVs, Parents apprehensions and fears are also increasing. The purpose of present study is to explore the parents apprehensions regarding their children social and emotional development due to increase in screen time. Three independent focus group discussions were carried out with parents to gain in depth understanding. Focus group guide was developed on the basis of literature and suggestions by subject matter experts,. Following the ethical consideration, focus group discussions were audio taped and transcribed. Content analysis was carried out to emerge the themes of the discussion. For precision and accuracy, the themes were then analyzed by two independent raters. Inter-rater reliability was assessed for the theme which was found to be substantial. The major themes that were identified by the present study were that excessive use of technology is affecting children emotional, social development and also leading them to inactive life style. On the other hand, technology can expand their vision if it is properly use for educational and constructive purpose. It is recommended that healthy home environment and good quality time can reduce the excessive screen time in children.

Author(s): Saba Khurshid, Hafsa Khalil Toor, Tanvir Akhtar