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    Wyświetlanie 1-6 z 6
    Tytuł:
    Seeding cell number required for optimal lipid accumulation during adipocyte differentiation using 3T3-L1 cell line
    Autorzy:
    Ariyanto, Eko Fuji
    Odaiyappan, Naren A/L S.
    Lidyana, Lynna
    Wikayani, Tenny Putri
    Qomarilla, Nurul
    Wira, Dwi Wahyudha
    Triatin, Rima Destya
    Powiązania:
    https://bibliotekanauki.pl/articles/1076694.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    3T3-L1 preadipocytes
    differentiation
    lipid accumulation
    seeding cell number
    Opis:
    Obesity is one of the major causes of metabolic diseases such as diabetes and heart attack, and, hence, can lead to low quality of life. Elaborating adipocyte differentiation is very crucial for formulating the treatment and prevention of obesity. The objective of this study is to investigate the seeding cell number required to obtain optimum lipid accumulation during adipocyte differentiation using the 3T3-L1 cell line. Two sets of 5.48×104 (for Day 0 and Day 8 of differentiation), of 10.96×104 (for Day 8) and of 21.92×104 (for Day 8) of 3T3-L1 cells were seeded in each wells of a 12-well plate. Isobuthylmethylxanthine (IBMX), Dexamethasone, and Insulin-containing differentiation cocktails was added into the medium at Day 0 for 48 hours. The medium was changed every two days. Day 0 and Day 8 samples were then stained using Oil Red O and were examined under the microscope to observe the lipid droplets (red-coloured). The lipid droplets were quantified by measuring the absorbance at wavelength of 550 nm. In the study, seeding the number of 10.96×104 cells produced very significantly higher lipid accumulation, as compared with seeding the number of 5.48×104 cells. However, doubling the seeding number into 21.92×104 cells did not increase the lipid droplets significantly. This study found that the optimum seeding number to obtain the maximum lipid droplets during 3T3-L1 adipocyte differentiation was 10.96×104 cells.
    Źródło:
    World News of Natural Sciences; 2019, 25; 220-226
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Removal of Cadmium using Alkaline-Treated Activated Carbon from Leucaena Leucocephala Biomass
    Autorzy:
    Ibrahim, W. M. H. W.
    Sulaiman, Nurul Syuhada
    Amini, Mohd Hazim Mohammad
    Kadir, W. R. A.
    Mohamed, Mazlan
    Ramle, Sitti Fatimah Mhd
    Bilgin, Ugur
    Rahman, Wan
    Powiązania:
    https://bibliotekanauki.pl/articles/2125550.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    activated carbon
    cadmium
    Leucaena leucocephala
    adsorption
    Opis:
    Water contamination that caused by heavy metals is a very common phenomenon in the industrial age. One of the popular way to treat metal contaminated water is by adsorption process using activated carbon as the adsorbent. This paper works on producing activated carbon by chemical means with impregnation ratios of NaOH:char (w/w) was predetermined at 1:1 (ACT1-1), 2:1 (ACT2-1) and 3:1 (ACT3-1) under activation temperature of 700°C. Considering the Leucaena leucocephala is a wildly, easy and fast grown species, with the availability throught the year, it was chosen to be used as the precursor. The properties of these activated carbons and its potential for cadmium removal from aqueus solution was analyzed. It was found that the highest surface area was recorded at 662.76 m²/g. Four parameters were studied which are contact time, the effect of pH, initial concentration of adsorbate and temperature. The equilibrium time was achieved in 40 min treatment at initial concentrations of 30 mg/l. The adsorbent exhibited good sorption potential for cadmium at pH 8.0 and equilibrium temperature of 30℃. Based on the results, this study had proved that activated carbon from Leucaena leucocephala biomass have the good potential to be used for removal of cadmium from wastewater.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 3; 1033--1036
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Axisymmetric free vibration of layered cylindrical shell filled with fluid
    Autorzy:
    Izyan, M. D. Nurul
    Sabri, Nur Ain Ayunni
    Hafizah, A. K. Nor
    Sankar, D. S.
    Viswanathan, K. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2106463.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    drgania swobodne
    powłoka cylindryczna
    efekt Love'a
    axisymmetric
    free vibration
    cylindrical shell
    Love’s first approximation theory
    inviscid fluid
    spline approximation
    eigenvalues
    Opis:
    The aim of the study is to analyse the axisymmetric free vibration of layered cylindrical shells filled with a quiescent fluid. The fluid is assumed to be incompressible and inviscid. The equations of axisymmetric vibrations of layered cylindrical shell filled with fluid, on the longitudinal and transverse displacement components are obtained using Love’s first approximation theory. The solutions of displacement functions are assumed in a separable form to obtain a system of coupled differential equations in terms of displacement functions. The displacement functions are approximated by Bickley-type splines. A generalized eigenvalue problem is obtained and solved numerically for a frequency parameter and an associated eigenvector of spline coefficients. Two layered shells with three different types of materials under clamped-clamped boundary conditions are considered. Parametric studies are made on the variation of the frequency parameter with respect to length-to-radius ratio and length-to-thickness ratio.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2021, 26, 4; 63--76
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Finite Element Analysis on Structural Behaviour of Geopolymer Reinforced Concrete Beam using Johnson-Cook Damage in ABAQUS
    Autorzy:
    Mortar, Nurul Aida Mohd
    Al Bakri Abdullah, Mohd Mustafa
    Hussin, Kamarudin
    Razak, Rafiza Abdul
    Hamat, Sanusi
    Hilmi, Ahmad Humaizi
    Shahedan, Noorfifi Natasha
    Li, Long Yuan
    Aziz, Ikmal Hakem A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2174588.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    fly ash geopolymer
    geopolymer concrete
    finite element analysis
    Johnson Cook Damage
    ABAQUS software
    Opis:
    This paper details a finite element analysis of the behaviour of Si-Al geopolymer concrete beam reinforced steel bar under an impulsive load and hyper velocity speed up to 1 km/s created by an air blast explosion. The initial torsion stiffness and ultimate torsion strength of the beam increased with increasing compressive strength and decreasing stirrup ratio. The study involves building a finite element model to detail the stress distribution and compute the level of damage, displacement, and cracks development on the geopolymer concrete reinforcement beam. This was done in ABAQUS, where a computational model of the finite element was used to determine the elasticity, plasticity, concrete tension damages, concrete damage plasticity, and the viability of the Johnson-Cook Damage method on the Si-Al geopolymer concrete. The results from the numerical simulation show that an increase in the load magnitude at the midspan of the beam leads to a percentage increase in the ultimate damage of the reinforced geopolymer beams failing in shear plastic deformation. The correlation between the numerical and experimental blasting results confirmed that the damage pattern accurately predicts the response of the steel reinforcement Si-Al geopolymer concrete beams, concluded that decreasing the scaled distance from 0.298 kg/m3 to 0.149 kg/m3 increased the deformation percentage.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 4; 1349--1354
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Rainfall Intensity Towards Macrozoobenthos Community Structure in Ciletuh Bay Regency of Sukabumi District, West Java, Indonesia
    Autorzy:
    Nasrudin, Clairissa A.
    Yuniarti, Yuniarti
    Ihsan, Yudi Nurul
    Syamsudin, Mega L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031702.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Ciletuh Bay
    Macrozoobenthos
    Months
    Nutrient
    Sukabumi
    Water quality parameters
    Opis:
    The purpose of the study undertaken between May 2018 and April 2019 is to determine the effect of rain water intensity on the value of macrozoobenthos structures in Ciletuh Bay. The data used in this research and directly taken from the research site are seawater quality parameters, analysis of sample granulometry and identification of the sample macrzoobenthos, while all data processing was conducted in the laboratory. The method used in this study was purposive sampling. The result of this research in sand type sediment texture brought a count of 96 macrozoobenthos individuals. In contrast, the count was only 7 in silt type sediments. The study concluded that the effect of varied rainfall intensity impacts the water quality parameters that caused the difference types of sediment in Ciletuh Bay.
    Źródło:
    World News of Natural Sciences; 2020, 28; 142-154
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cultivation and economic prospects of betel nut (Areca catechu Linn.) and coconut (Cocos nucifera Linn.) in rural economy: A case study from Southeastern region of Bangladesh
    Autorzy:
    Rajasree, N.
    Akhter, H.
    Nurul, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2049749.pdf
    Data publikacji:
    2019
    Wydawca:
    Fundacja na Rzecz Młodych Naukowców
    Tematy:
    betel nut
    Areca catechu
    coconut
    Cocos nucifera
    cultivation
    rural economy
    distribution pattern
    sustainable production
    household income
    Bangladesh
    palm husbandry
    Palm Action Plan
    Opis:
    Betel Nut and Coconut are two important crops in the homesteads and farmlands of South-Eastern region of Bangladesh. An exploratory survey to assess the cultivation, contribution and importance of palm husbandry in rural economy was conducted at Ramu upazila under Cox’s Bazar District, Bangladesh. A total of 120 households’ heads were interviewed who were selected following stratified random selection method. The findings revealed that betel nut contributes 19.06% (78345 TK) of total annual household income whereas coconut contributes 6.07% (25017 TK). Orchard, pond bank, homestead and road sides were the four cultivation sites of both palms. Orchards were at top of farmer’s preference for cultivating betel nuts while homesteads are of greater preference to farm holders for coconut trees. Annual production of betel nut was highest (547 betel nuts per tree) at their 11-20 years age range. Annual production per coconut tree was maximum (58 coconuts) at 21-30 years age class. The availability of palm trees of different age classes reflects a sustainable production system of betel nut and coconuts in the study area. Palm husbandry could be a promising sector of rural economy in Bangladesh if the marketing system is well developed reducing involvement of middlemen in the business.
    Źródło:
    Environment, Earth and Ecology; 2019, 3, 1; 24-34
    2543-9774
    2451-4225
    Pojawia się w:
    Environment, Earth and Ecology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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