scholarly journals Fluid Intake Capacity of Aloe Vera and Sea Cucumber Thin Film

2021 ◽  
Vol 1030 ◽  
pp. 35-41
Author(s):  
Anastasia Jajah ◽  
Mahshuri Yusof
Keyword(s):  
Thin Films ◽  
Sea Cucumber ◽  
Fluid Intake ◽  
Aloe Vera ◽  
Morphological Structure ◽  
Natural Material ◽  
Therapeutic Effects ◽  
Test Results ◽  
Degradation Behaviour ◽  
Free Swell

Aloe Vera and sea cucumber are the natural material which has been used widely in bio-medical field in Malaysia, especially for wound healing purposes due to its therapeutic effects. Recently, thin films which can absorb acceptable amount of fluid has been gaining attentions in biomaterial wound dressing applications. Hence, the incorporation of these natural materials in the fabrication of the thin films were investigated regarding the fluid intake capacity under the condition of being in contact with deionized water and pseudo-wound exudate. Three types of films made of different compositions of Aloe Vera and sea cucumber were prepared and evaluated. The morphology of the films was analysed using the Scanning Electron Microscopy (SEM) evaluation and the fluid intake capacity through the Free Swell Absorptive Capacity test. Results showed the variety of fluid intake capacity of different type of the film after being immersed in both solutions. The morphological structure of each film also varied from one another. The result also indicated that the Aloe Vera film held the adequate fluid intake capacity without any degradation behaviour.

scholarly journals Review: Aktivitas Farmakologi Dan Perkembangan Produk Dari Lidah Buaya (Aloe vera L.)

2019 ◽  
Vol 6 (1) ◽  
pp. 38
Author(s):  
Dian Kurnia ◽  
Prima Happy Ratnapuri
Keyword(s):  
Amino Acids ◽  
Wound Healing ◽  
Aloe Vera ◽  
Chemical Compounds ◽  
Pharmaceutical Products ◽  
Therapeutic Effects ◽  
Pharmacological Activities

ABSTRAK      Lidah buaya (Aloe vera L.) diketahui mengandung banyak senyawa kimia alami, seperti antrakuinon, asam amino, acemannan, aloesin, glukomanan yang bertanggungjawab memberikan efek teraupetik yang bermanfaat dalam dunia farmasi. Review ini bertujuan untuk memberikan informasi terkait aktivitas farmakologi dan perkembangan produk dari lidah buaya dalam bidang farmasi. Pada Review artikel ini data yang disajikan diperoleh dari literatur online berupa jurnal dan artikel ilmiah publikasi lokal maupun internasional dan literatur offline berupa buku dan ­e-book. Diketahui bahwa lidah buaya memiliki berbagai aktivitas farmakologi yaitu sebagai antiinflamasi, berperan dalam penyembuhan luka, antibakteri, antifungi, antivirus, antioksidan, antikanker, antitumor, antikolesterol, dan antiulcer. Penggunaan lidah buaya dalam produk farmasi juga telah mengalami perkembangan diantaranya yaitu sediaan nano partikel, tablet, suppositoria, gel dan krim.  Kata Kunci— Aloe vera L., Aktivitas farmakologi, Perkembangan produk  ABSTRACT Aloe vera L. contains many natural chemical compounds, such as anthraquinone, amino acids, acemannan, aloesin, glucomannan which are responsible for providing therapeutic effects that are useful in pharmaceutical. The aims of this review is to provide information about pharmacological activities and products development of Aloe vera. In this article review, online and offline literatures were used. Online literature such us journals and articles obtained from local and international, while the offline literature such us books and e-books. It is known that aloe vera has a variety of pharmacological activities, that act as antiinflammatory, wound healing, antibacterial, antifungal, antiviral, antioxidant, anticancer, antitumor, anticholesterol, and antiulcer. Pharmaceutical products of Aloe vera also have been developed such us nanoparticles products, tablets, suppositories, gels and creams.  Keywords— Aloe vera L., Pharmacological activities, Products development

scholarly journals Impact of a Structure on Durability of Modified Nickel-Base Superalloys in Creep Conditions/ Wpływ Struktury Na Trwałość W Warunkach Pełzania Modyfikowanych Nadstopów Na Bazie Niklu

2014 ◽  
Vol 59 (4) ◽  
pp. 1559-1563 ◽  
Author(s):  
M. Ciesla ◽  
M. Manka ◽  
P. Gradon ◽  
F. Binczyk
Keyword(s):  
Creep Resistance ◽  
Morphological Structure ◽  
Aircraft Engine ◽  
Coarse Grained ◽  
Test Results ◽  
Cast State ◽  
Accelerated Creep ◽  
Nickel Base ◽  
The Impact ◽  
Modification Treatment

Abstract The study assesses the impact of surface and bulk modification and filtration during pouring on a durability under accelerated creep conditions of casts made of IN-713C and MAR-247 nickel superalloys scrap used for manufacturing of aircraft engine parts. The impact of solutionizing (1185°C/2 h) with subsequent ageing (870°C/20 h) on the creep resistance of a casting made from MAR-247 coarse-grained superalloy was also examined. Morphological structure parameters were determined with the use of Met-Ilo software. Macrostructure analysis of casts showed very significant impact of surface modification treatment. Creep test results clearly showed that coarse grained samples of IN-713C and MAR-247 superalloys have higher creep resistance. Moreover alloy MAR-247 had higher creep durability after heat treatment compared to as-cast state.

scholarly journals Effect of Temperature on Reliability and Degradation of 0.63?m Laser Diode

2012 ◽  
Vol 9 (1) ◽  
pp. 141-147
Author(s):  
Baghdad Science Journal
Keyword(s):  
Temperature Dependence ◽  
Laser Diode ◽  
System Application ◽  
Effect Of Temperature ◽  
Reliability Test ◽  
Test Results ◽  
Degradation Behaviour ◽  
Light Power ◽  
Aging Test ◽  
Power Operation

The reliability of optical sources is strongly dependent on the degradation and device characteristics are critically dependent on temperature. The degradation behaviours and reliability test results for the laser diode device (Sony-DL3148-025) will be presented .These devices are usually highly reliable. The degradation behaviour was exhibited in several aging tests, and device lifetimes were then estimated. The temperature dependence of 0.63?m lasers was studied. An aging test with constant light power operation of 5mW was carried out at 10, 25, 50 and 70°C for 100hours. Lifetimes of the optical sources have greatly improved, and these optical sources can be applied to various types of transmission systems. Within this degradation range, the device life for system application is estimated to be more than 100 h at 70 ºC at a constant power of 5mW.

Adhesion and Dielectric Strength of Ultra-Low Dielectric Constant PTFE Thin Films

1997 ◽  
Vol 476 ◽  
Author(s):  
C.T. Rosenmaver ◽  
J. W. Bartz ◽  
J. Hammes
Keyword(s):  
Thin Films ◽  
Dielectric Constant ◽  
Dielectric Strength ◽  
Low Dielectric Constant ◽  
Thermal Treatments ◽  
Test Results ◽  
Low Dielectric ◽  
Metal Insulator Metal ◽  
Thickness Standard ◽  
High Dielectric

AbstractPrevious work has demonstrated the potential of polytetrafluoroethylene (PTFE) thin films for ULSI applications. The films are deposited from PTFE nanoemulsions. They have an ultra-low dielectric constant of 1.7 to 2.0, a leakage current of less than 1.0 nA/cm2 @ 0.2 MV/cm and a dielectric strength of from 0.5 to 2.4 MV/cm. They are thermally stable (isothermal weight loss < 1.0 %/hr at 450 °C), uniform (thickness standard deviation < 2%), and have excellent gap-fill properties (viscosity of 1.55 cP and surface tension of 18 mN/m). The films are inert with respect to all known semiconductor process chemicals, yet they are easily etched in an oxygen plasma.This paper discusses the processing technology that has been developed to process PTFE films with these properties. Specifically, it addresses two recent discoveries: 1) Good adhesion of spin-coated PTFE to SiO2 surfaces; and 2) high dielectric strength of PTFE thin films spin-coat deposited onto rigid substrates. The adhesion-promoting and thermal treatments necessary to produce these properties are detailed. Stud pull test results and test results from metal-insulator-metal (MIM) capacitor structures are given.

scholarly journals Extraction Of Papaya Latex (Carica Papaya) With Dopping Cu As Dye Sentisized Solar Cell (DSSC)

2018 ◽  
pp. 1-6
Author(s):  
Dian Wijaya Kurniawidi ◽  
Siti Alaa ◽  
Susi Rahayu
Keyword(s):  
Thin Films ◽  
Spin Coating ◽  
Carica Papaya ◽  
Raw Material ◽  
Test Results ◽  
Aromatic Rings ◽  
Aliphatic Compounds ◽  
Flavonoid Compounds ◽  
Coating Method ◽  
Papaya Latex

Indonesia is a biodiversity country. Abundance of biological resources may encourage researchers to optimize its use. As an example papaya trees are utilized as raw material for thin films. Sap of papaya latex is doppinged with Cu. This composition is depositioned on top of FTO by spin coating method. The addition of Cu dopping aims to control the rate of crystallinity of the material. This research will add Cu between 10% and 50% solution. Based on FTIR test results, flavonoid compounds might be obtained with O-H group, some aromatic rings C = C and C = O, aliphatic compounds C-H and -CO. Flavonoid compounds are potentially utilized as dye for DSSC. The thickness of dye produced by doping Cu 10% is approximately (0.5-2) μm. Furthermore, dopping Cu from 20% to 40% can produce thickness around 10-50 nm. Meanwhile, the results of the XRD test show an effective Cu between 10% to 40%.

scholarly journals Microstructure and Mechanical Properties of TiN/TiCN/TiC Multilayer Thin Films Deposited by Magnetron Sputtering

2018 ◽  
Author(s):  
Abbas Razmi ◽  
Ruhi Yeşildal
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Magnetron Sputtering ◽  
Photoelectron Spectroscopy ◽  
Titanium Carbonitride ◽  
Nanoindentation Test ◽  
Multilayer Thin Films ◽  
Test Results ◽  
X Ray ◽  
Cp Ti

Enhancement of mechanical properties by using TiN/TiCN/TiC multilayer thin films deposited on commercially pure cast Titanium (CP-Ti), Ti6Al4V and silicon (Si) substrates via magnetron sputtering technique was investigated in this study. The structural, chemical and mechanical properties of the coatings were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), nanoindentation and scratch test. Results of the XRD analysis showed reflections corresponded to FCC (1&nbsp;1&nbsp;1) cubic and polycrystalline structure for TiN/TiCN/TiC films. XPS analysis revealed formation of titanium nitride, titanium carbonitride and titanium carbide in the coatings. According to SEM images, the coatings demonstrated dense cross-sectional morphology and columnar structure as well as good adhesion to the substrate with a thickness of 1.77 &mu;m deposited on silicon (1 0 0). Scratch and nanoindentation test results showed the best mechanical behavior for the coated Ti6Al4V substrate material with the 19.96 GPa hardness and 25 N critical load values, because of its higher hardness and toughness of substrate in compared to Cp-Ti substrate.

scholarly journals PENINGKATAN KESEJAHTERAAN DENGAN PEMANFAATAN LIDAH BUAYA UNTUK PERAWATAN KULIT KEPALA DAN RAMBUT

2020 ◽  
Vol 7 (02) ◽  
pp. 117-129
Author(s):  
Neneng Siti Silfi Ambarwati ◽  
Titin Supiani ◽  
Nilam Amelia Laksmi ◽  
Dwi Atmanto
Keyword(s):  
Aloe Vera ◽  
Homogeneity Test ◽  
Test Results ◽  
Purposive Sampling ◽  
Average Value ◽  
Normality Test ◽  
Skin Ulcers ◽  
Aloe Vera Gel ◽  
Before And After ◽  
Test Requirements

Background: Aloe vera is a medicinal plant that has been used since 1500 BC in many countries as a local medicine that has thick leaves flesh from the Liliaceae family. There are 75 compounds in Aloe vera leaves flesh have been found including 20 minerals (copper, iron, calcium, zinc, manganese, sodium, potassium, etc), 20 amino acids, vitamins (vitamins A, B, C, E, B12, folic acid ), salicylic acid, and water. Aloe vera is widely used for its antibacterial, anti-viral, anti-inflammatory, the lack of itching, and help prevent skin ulcers. Purpose: This study intends to investigate the effect of fresh Aloe vera gel mask in the reduction of scalp dandruff. Methods: Sampling was done by purposive sampling method as many as 10 people suffering from dry dandruff divided into 2 groups, namely 5 were given care using fresh Aloe vera gel mask and 5 were given control mask treatment. Each sample received 3 treatments a week for 4 weeks. Observations before and after treatment were carried out by experts using a research instrument sheet assisted by a skin and hair analyzer. Test requirements analysis using the normality test and homogeneity test, and data analysis using the T-test. Results: The test results show data are normally distributed and homogeneous, tcount (3.38) > ttable (1.86). This showed that the influence the used of Aloe vera to reduce dandruff on the scalp. Obtained the average value of the reduction in dandruff with use fresh Aloe vera gel mask (0.800) was greater than using a control (0.699). Conclusion: The results of this study indicate that there influence of used Aloe vera leaves flesh mask on reduced dandruff on the scalp.   Abstrak Latar belakang masalah: Kesejahteraan keluarga merupakan kondisi keluarga yang memiliki keuletan, ketangguhan, kemampuan sehingga mampu hidup mandiri. Lidah buaya adalah tanaman obat yang telah digunakan sejak 1500 SM di banyak negara sebagai obat lokal yang memiliki daging daun tebal dari keluarga Liliaceae. Ada 75 senyawa dalam daging daun lidah buaya yang telah ditemukan termasuk 20 mineral (tembaga, besi, kalsium, seng, mangan, natrium, kalium, dll), 20 asam amino, vitamin (vitamin A, B, C, E, B12, asam folat), asam salisilat, dan air. Lidah buaya banyak digunakan untuk antibakteri, anti-virus, anti-inflamasi, kurangnya gatal, dan membantu mencegah borok kulit. Tujuan: Penelitian ini bermaksud untuk menyelidiki efek dari masker gel lidah buaya segar dalam mengurangi ketombe kulit kepala dan cara bagaimana lidah buaya ini dapat menjadi salah satu sarana untuk meningkatkan kesehateraan keluarga. Metode: Pengambilan sampel dilakukan dengan metode purposive sampling sebanyak 10 orang penderita ketombe kering yang dibagi menjadi 2 kelompok, yaitu 5 orang diberikan perawatan menggunakan masker gel lidah buaya segar dan 5 orang diberi perlakuan masker kontrol. Perlakuan sampel dilakukan sebanyak 3 kali dalam satu minggu selama 4 minggu. Pengamatan sebelum dan sesudah perawatan dilakukan oleh dua orang ahli kulit dan rambut dengan menggunakan lembar instrumen penelitian. Uji persyaratan analisis menggunakan uji normalitas dan uji homogenitas, sedangkan analisis data menggunakan uji t. Selanjutnya dilakukan penelitian deskriptif kualitatif dengan menggunakan literatur untuk mengetahui bagaimana cara meningkatkan kesejahteraan keluarga dengan menggunakan lidah buaya ini. Hasil: Hasil tes menunjukkan data berdistribusi normal dan homogen, dengan thitung (3,38) > ttabel (1,86). Hal ini menunjukkan adanya pengaruh penggunaan masker gel lidah buaya dalam mengurangi ketombe pada kulit kepala. Diperoleh nilai rata-rata pengurangan ketombe dengan menggunakan masker gel lidah buaya segar (0,800) lebih besar daripada menggunakan kontrol (0,699). Implikasi: Pembudidayaan lidah buaya dan pemanfaatan lidah buaya sebagai masker dapat meningkatkan kesehateraan keluarga. Kata kunci: kesejahteraan keluarga, masker gel lidah buaya segar, mengurangi ketombe  

scholarly journals FABRICATION AND CHARACTERIZATIONS OF GELATIN/CHITOSAN WITH ALOE VERA AND ACHATINA FULICA SP MUCUS AS SCAFFOLD FOR SKIN TISSUE ENGINEERING

2019 ◽  
Vol 81 (4) ◽  
Author(s):  
Fathania Nabilla ◽  
Prihartini Widiyanti ◽  
Dyah Hikmawati
Keyword(s):  
Tissue Engineering ◽  
Cell Proliferation ◽  
Tensile Strength ◽  
Pore Size ◽  
Aloe Vera ◽  
Skin Tissue ◽  
Hydroxyl Groups ◽  
Test Results ◽  
Achatina Fulica ◽  
Degradation Test

Scaffold is a biomaterial widely used in tissue engineering. Scaffold is temporary porous structure which contain extracellular matrix. It serves as scaffolding which is required for cells infiltration and physical support to guide the cell proliferation and differentiation into the targeted functional tissues. Scaffold must be biocompatible, small pore size, flexible and support regenerative application. Aloe vera as natural resource, it has capability in accelerating wound healing, facilitating the inflammation, increasing wound contraction and epithelialization, and increasing organization of the regenerated tissue. Snail mucus (SM) has capability in inhibiting bacterial growth. This study aims to synthesize and characterize a scaffold made of gelatin-chitosan-Aloe vera (AV) - Achatina fulica sp mucus. The method is to synthesize scaffold with its compositions, gelatin-chitosan (1: 1 ratio) which is dissolved into 0.05 M acetic acid, then a variation of Aloe vera (AV) and snail mucus (SM) at 0% AV; 0% SM; 0.07 AV; 0.07 SM; 0.15 AV; 0.15 SM; 0.07 AV; 0.15 SM; 0.15 AV; 0.007 SM were mixed with the chitosan-gelatin solution, then used freeze dry method to obtain porous scaffold. Characterization which performed in this research including Fourier-transform infrared spectroscopy (FTIR), Scanning Electron Microscopy (SEM), porosity test, tensile strength test, swelling test, and degradation test. Based on FTIR test, Aloe vera and snail mucus interacted with free amino and hydroxyl groups of chitosan and gelatin, characterized by absorption bands at 2937.59 cm-1 wave numbers which are symmetrical and asymmetrical stretching of (-CH) .SEM test results obtained pore size of 70 - 235 μm. Porosity test results showed that five scaffolds have porosity value of 87-96%; thus, allowing the process of cell proliferation to occur well. The result of physical characteristic test yielded tensile strength of 1.425 MPa on gelatin-chitosan as control sample and 0.732 MPa for sample with 0.15% AV and 0.15% SM. Swelling test showed a variation of scaffold composition with Aloe vera with Achatina fulica sp’s mucus having a swelling percentage of 200-520%. The degradation test results showed that the whole sample was not depleted for 21 days; thus, giving time for cell regeneration. Sample with 0.15% Aloe vera and 0.07% snail mucus has some potentials as scaffolds for skin tissue in case of burns wound, due to its morfology, porosity, and degradation.

Ferroelectric Thin Films of Bi-Containing Layered Perovskites

1997 ◽  
Vol 493 ◽  
Author(s):  
Xiaofeng Du ◽  
I-Wei Chen
Keyword(s):  
Thin Films ◽  
Texture Evolution ◽  
Common Species ◽  
Ferroelectric Thin Films ◽  
Test Results ◽  
Polarization Anisotropy ◽  
Strong Polarization ◽  
Metal Organic ◽  
Layered Perovskites ◽  
Organic Decomposition

ABSTRACTFerroelectric thin films of Bi-containing layered perovskites such as Bi4Ti3O12, PbBi2Nb2O9 and SrBi2Nb2O9 have been processed by metal-organic decomposition (MOD) method. Films with random or c-orientation have been obtained via different heat treatment. Nucleation control has been identified as the mechanism for the texture evolution in these films. A strong polarization anisotropy has been observed which corresponds to the layered polarization in the crystal structure. The fatigue test results show that Ti seems to be a common species that exists in fatigue-prone ferroelectrics.

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