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Wyświetlanie 1-15 z 56
Tytuł:
Melanophores inside frogs
Autorzy:
Pshennikova, E.S.
Voronina, A.S.
Powiązania:
https://bibliotekanauki.pl/articles/10853.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2018, 71
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gender differential in the incidence of diabetes mellitus among the patients in Udi Local Government Area of Enugu state, Nigeria
Autorzy:
Chukwu, B.N.
Ezebuiro, V.O.
Samuel, E.S.
Nwachukwu, K.C.
Powiązania:
https://bibliotekanauki.pl/articles/11829.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
gender
incidence
diabetes mellitus
insulin
hyperglycemia
glucose
patient
human disease
metabolic disease
Udi Local Government Area
Enugu state
Nigeria
Opis:
Diabetes Mellitus is a chronic metabolic disease characterized by hyperglycemia and disturbances of carbohydrate, fat and protein metabolism. It is a major public health problem and disease burden worldwide, and especially in Nigeria. This study determined the gender differential in the incidence of Diabetes mellitus among the patients in Udi L.G.A of Enugu State. Three research questions and one hypothesis were formulated to guide the study. Descriptive survey design was employed. A sample of 343 diabetes mellitus patients were randomly selected and used for the study. Researchers design data documentary profoma was used to collect the data from selected health facilities in respect to the patients’ gender and their fasting sugar level as contained in their folder or hospital record/register. Frequency and percentages was used to answer research question while the null hypothesis was tested using Chi- square at 0.05 level of significance. The finding of the result revealed a high incidence of Diabetes Mellitus in 2012, females recorded a high incidence of DM from 2008-2012 and high percentage of fasting blood sugar level than male. The finding also revealed no difference in the fasting blood sugar based on gender. It is recommended among others that diagnostic investigation on human placental lactose is advocated to reduce or stop its opposition to insulin secretion during pregnancy.
Źródło:
International Letters of Natural Sciences; 2013, 04
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mitigation of salinity stress effects on growth, physio-chemical parameters and yield of snapbean (Phaseolus vulgaris L.) by exogenous application of glycine betaine
Autorzy:
Desoky, E-S.M.
Ibrahim, S.A.
Merwad, A-R.M.
Powiązania:
https://bibliotekanauki.pl/articles/11220.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2019, 76
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of azoxystrobin fungicide improves drought tolerance in tomato, via enhancing physio-biochemical and anatomical feature
Autorzy:
Ali, A.A.I.
Desoky, E-S.M.
Rady, M.M.
Powiązania:
https://bibliotekanauki.pl/articles/11895.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2019, 76
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Response of salt-stressed common bean plant performances to foliar application of phosphorus (MAP)
Autorzy:
Rady, M.M.
El-Shewy, A.A.
Seif El-Yazal, M.A.
Abdelaal, K.E.S.
Powiązania:
https://bibliotekanauki.pl/articles/11418.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2018, 72
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cyanobacteria and glutathione applications improve productivity, nutrient contents, and antioxidant systems of salt-stressed soybean plant
Autorzy:
Zaki, S.S.
Eman, E.E.B.
Mostafa, M.R.
Powiązania:
https://bibliotekanauki.pl/articles/11058.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2019, 76
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of temperature on guaiacol peroxidase of Pyrus communis
Autorzy:
Saeidian, S.
Ghasemifar, E.
Powiązania:
https://bibliotekanauki.pl/articles/10793.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
temperature effect
guaiacol
Peroxidase
Pyrus communis
enzyme
plant growth
plant development
cell wall
Opis:
Peroxidase (EC 1.11.1.7; donor: hydrogen-peroxide oxidoreductase, POD) is one of the key enzymes controlling plant growth, differentiation and development. The enzyme participates in construction, rigidification and eventual lignification of cell walls, biosynthesis of ethylene from 1-aminocyclopropane-1-carboxylic acid and H2O2, regulation of auxin level through auxin catabolism, protection of tissue from damage and infection by pathogenic microorganisms, the oxidation of indoleacetic acid. For peroxidase activity in wild pears extract one pH optimum was observed at 6.5 that probably belong to atleast one isoenzyme. Activity of peroxidase in presence of guaiacol and H2O2 was optimum after incubation at 40 °C. Maximum activity of peroxidase is 300 % .Activity increased to 240 %, 300 %, 70 % and 10 % after 60 minute incubation at 30, 40, 45 and 60 °C for peroxidase. Incubation at high temperature (70 °C) was accompanied with decrease of activity to 10 % peroxidase activity.
Źródło:
International Letters of Natural Sciences; 2013, 05
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of heat transfer on unsteady magnetohydrodynamics (MHD) boundary layer flow of an incompressible fluid a moving vertical plate
Autorzy:
Falodun, B. O.
Fadugba, S. E.
Powiązania:
https://bibliotekanauki.pl/articles/1178267.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Boundary layer
Heat transfer
MHD
Thermal radiation
Viscous dissipation
Opis:
This paper deals with the effects of heat transfer on unsteady MHD boundary layer flow of a chemically reading fluid past a vertical plate in the presence of thermal radiation and viscous dissipation. The governing equations of the problem under investigation are systems of partial differential equations. These equations are namely: continuity equation, linear momentum equation and energy equation. These systems of equations were non-dimentionalized by introducing non-dimensional variables. We resulted to dimensionless systems of partial differential equations. The fluid considered in this paper are optically thick, however we employ the Roseland model. Simulations were done numerically on all controlling parameters and the results generated were displayed in graphs and tables. Results review that thermal Grashof number intensifies the velocity profile and increase in Prandtl number leads to decrease in both the velocity and temperature field. Increasing thermal radiation intensifies the velocity and temperature profile. Thermal radiation speeds up the convection flow and thermal boundary layer of the fluid. Increase in magnetic parameter reduces the velocity profile as a result of the applied transverse magnetic field.
Źródło:
World Scientific News; 2017, 88, 2; 118-137
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Appraisal of process mapping in heavy engineering projects: a case of Nigeria East-West coastal highway
Autorzy:
Ekung, S.
Adeniran, L.
Adu, E.
Powiązania:
https://bibliotekanauki.pl/articles/11771.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Opis:
The need to improve project delivery process is one of the leading advocacies of relevant construction industry reports. Improved process is sine qua non for improve performance. Critical to the improvement process, is the need to assess construction process’ capability to meet design and production requirements. The present study examined process mapping of a cable-stayed bridge in the Nigeria’s east-west coastal highway project. Qualitative data was collected through a three phase process mapping protocol using mainly self-generate, one-on-one interview and focus group. Twenty non-related sub-processes were identified from four pre-construction stages: investigation; feasibility; design; and tender. Integrative definition (IDEFO) and Unified Language Modelling (UML) are used to map the feasibility, design and the design sub-processes. The mapping indicates the design sequence is iterative and factually flexible until such a point where functional design satisfies appropriate forcing test. The study provides medium for communicating complex construction functions thereby facilitating common understanding in the way projects are delivered with appropriate information about inputs, output and resources.
Źródło:
International Letters of Natural Sciences; 2014, 15, 1
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Species composition, seasonal dynamics and distribution of phytoplankton of the Zaporizke Reservoir
Autorzy:
Yakovenko, V.
Melnik, S.
Fedonenko, E.
Powiązania:
https://bibliotekanauki.pl/articles/11210.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2017, 62
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Factors influencing construction Stakeholders’ engagement outcome in Nigeria
Autorzy:
Ekung, S.B.
Okonkwo, E.
Odesola, I.
Powiązania:
https://bibliotekanauki.pl/articles/11878.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Opis:
As a result of an increasing cases of community protest and opposition to construction projects in the Niger Delta during the construction stages, the present study investigated factors influencing construction stakeholders‟ engagement outcome. The aim was to determine the severity of factors influencing construction stakeholders‟ engagement in the research environment. Due to the pluralist usage of the term stakeholder, the study examined community stakeholders. Qualitative and quantitative data were collected using semi-structured interview and questionnaire survey administered on 186 respondents selected from two stakeholders groups using snowballing. 32 factors generated individually and collectively from literature, interview and practice were ranked and analysed using descriptive and inferential statistics. Gap between regulatory requirements and public expectations, location of projects, effect of cumulative development effects, poverty, and lack of information disclosure are some of the high ranking factors influencing engagement performance. Further analysis involving Levene‟s Homogeneity test indicates no significant difference in the population ranking opinion of these factors. This heterogeneous distribution demonstrates strong similarity across the population studied. These factors must therefore be smoothened in future construction engagement process to enhance successful project delivery. The study unveils inherent lacunas in construction project management which strongly correlates project performance.
Źródło:
International Letters of Natural Sciences; 2014, 15, 2
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nanocomposite Sulfonated PVDF-TiO2 Membranes as a Potential Alternative for Nafion
Autorzy:
Juliandri, Juliandri
Rukiah, Rukiah
Ernawati, E. E.
Handika, R. S.
Nasir, M.
Powiązania:
https://bibliotekanauki.pl/articles/1165508.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
PVDF membrane
conductivity
nanocomposites
titanium oxide
Opis:
Fuel cell is an alternative renewable energy source which potentially able to replace a fossil fuel. Nowadays, common fuel cell membrane generally used is Nafion. PVDF polymer is another synthetic polymer which has excellent physical and chemical properties. The purpose of this research is to synthesize an alternative fuel cell membrane, using sulfonated PVDF doped with TiO2 nanoparticles. Sol-gel method was performed to synthesize TiO2 nanoparticles, with TiCl4 as precursor. PVDF membranes with variation of TiO2 composition (0, 1, 1.5, and 2%) were prepared with ultrasonic method. The composite membranes then were sulfonated with concentrated sulfuric acid. The composite membranes were characterized with FTIR for functional group analysis, SEM-EDX for morphology analysis, acid-base titration for degree of sulfonation, weight difference for degree of water uptake, and four point lines for conductivity. FTIR spectra of the sulfonated membrane show the existence of sulfonic group at wavenumber of 601, 1400, and 1454 cm-1. The result of SEM-EDX analysis shows that the nanoparticles of TiO2 were not distributed homogenously. Degree of sulfonation of the PVDF-TiO2 2% composite membrane is 19.54%, and its water uptake is 23.34%. The highest conductivity is about 3.17 × 10-3 S cm-1 for the PVDF-TiO2 2% composite membrane that is very close to Nafion’s conductivity, 6.08 × 10-3 S cm-1.
Źródło:
World Scientific News; 2018, 107; 150-159
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of anaerobic exercise in the morning and evening sessions on some coagulation factors in non-athletes female students of Islamic Azad University of Sanandaj
Autorzy:
Tabatabai, E.F.
Hematfar, A.
Saeidian, S.
Powiązania:
https://bibliotekanauki.pl/articles/11644.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
anaerobic exercise
morning session
evening session
coagulation factor
blood coagulation
fibrinolysis
fibrinogen
platelet
prothrombin
non-athlete
female
student
Islamic Azad University
Sanandaj
Opis:
The purpose of the present research is compare the effects of coagulation factors in non-athletes gilrs after exhaustive anaerobic activity sessions in the morning and evening. Present study was semi-emprical that was done on 12 non-athlete female students in range of 18-24 years. Exercise protocol was RAST test, that in which each person passed amain 35 meters of distance for 6 times and rest 10 seconds between each stage. Blood sampling was performed Once in the morning (8 am) and a later week in evening (5 pm) in two stages (before and after). Datas were analyzed with Kolmogorov Smirnov test, Levine's test and two-way ANOVA level (p < 0/05 ). The results showed that there was not significative difference between the effects of an anaerobic activity in the morning and in the evening on hematocrit, platelet, partial time Thromboplastin (PTT), Prothrombin time (PT) and fibrinogen in non-athletic subjects. Findings showed that training for normal persons, non-athletes and patients, especially patients with clotting problems, and cardiovascular disease will be suggeste, each activity to be act with caution at morning and during the day.
Źródło:
International Letters of Natural Sciences; 2014, 05
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring the health of sediment ecosystem along the Mahim Creek of Mumbai - a study of physico-chemical properties
Autorzy:
Singare, P.U.
Ferns, S.E.L.
Powiązania:
https://bibliotekanauki.pl/articles/11793.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
monitoring
health
sediment ecosystem
conductivity
Mahim Creek
Mumbai city
physicochemical property
Opis:
The present study was performed for the period of one year from June 2012 to May 2013 in order to understand the physico-chemical properties of sediments samples collected along the Mahim Creek of Mumbai. The annual average pH value of the creek sediments was recorded as 9.22. It is feared that such conditions may increase the alkalinity of Creek water which according to USEPA will increase the physiological stress of many aquatic species resulting in decreased reproduction, decreased growth, disease, or death thereby reducing the biological diversity of the Creek. The total organic matter in the creek sediments was found to be maximum of 10.30 % with an annual average concentration of 6.29 %. Although organic matter is a primary source of food for benthic organisms and is important in maintaining a viable ecosystem, too much of organic matter deposited in the sediments will be responsible for depletion in dissolved oxygen content of the creek water causing unpleasant odours and may also increase the rate of eutrophication. From the results it appears that as India moves towards stricter regulation of industrial effluents to control water pollution, greater efforts are required to control the discharge of pollutants into the ecosystems.
Źródło:
International Letters of Natural Sciences; 2014, 12, 1
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of Toxic Heavy Metals in Mahim Creek of Mumbai
Autorzy:
Singare, P. U.
Ferns, S. E. L.
Powiązania:
https://bibliotekanauki.pl/articles/411860.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
heavy metals
toxic metals
creek water
Mahim Creek
Bandra ki Khadi
Mumbai
Opis:
The present study was performed for the period of one year from June 2012 to May 2013 in order to understand the level of toxic heavy metals in the water of Mahim Creek near Mumbai. It was observed that the annual average concentration of heavy metals like Pb, Cd, Cr, Fe, Zn, Cu and Ni and Hg was found to be 0.68, 0.28, 0.15, 0.04, 2.93, 0.64, 1.29 and 0.31 ppm respectively. The average concentrations of Hg and Pb were found to be above the maximum permissible limit of 0.01 ppm and 0.1 ppm respectively set for inland surface water by Central Pollution Control Board (CPCB) of India. The results suggest that there is a need to have such regular scientific monitoring for longer time period in order to understand the variation in level of these toxic heavy metals discharged in to the creek water. It is feared that the existing problem if ignored may increase the pollution problem of the creek due to the toxic heavy metals resulting in threat to the biological life of an aquatic ecosystem. From the results of the present investigation it seems that the time has come to move towards ecosystem specific discharge standards to maintain the health and productivity of natural resources on which the majority of human population is dependent.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 17, 1; 98-106
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 56

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