scholarly journals FORMULASI SEDIAAN LOTION SARI KERING HERBA PEGAGAN (Centella asiatica(L.) URBAN ) DENGAN VARIASI KONSENTRASI EMULGATOR SPAN 60 DAN TWEEN 60

Media Farmasi ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 1
Author(s):  
Arisanty Arisanty ◽  
Santi Sinala ◽  
Muli Sukmawaty ◽  
Andi Masna
Keyword(s):  
Centella Asiatica ◽  
Physical Quality ◽  
Accelerated Storage ◽  
Before And After ◽  
Quality Stability ◽  
Dispersion Test ◽  
The Stability ◽  
Tween 60 ◽  
Span 60

Gotu Kola (Centella asiatica (L.) Urb) is a plant widely grown and scientifically proven to be an antioxidant. This study makes a lotion formula containing dried Gotu kola herb with varying concentrations of emulgator span 60 and tween 60. It determines the concentration of span 60 and tween 60, producing lotions with the most stable physical quality and accelerated storage methods. The lotion was prepared using a concentration of Centellaasiatica (L.) Herbaceous Dry Herb extract of 1% and an Emulgator span 60 and tween 60 in a concentration variation of 5%, 7.5%, and 10%. The stability of the lotion was determined based on quality observations. The physical condition before and after the storage is accelerated for six cycles at a temperature of 5oC and 35oC in organoleptic, homogeneous, pH, viscosity, diffusion power, and emulsion type. The research results show the physical quality stability of formula I (5% emulgator) did not meet the requirements of the dispersion test before storage was accelerated. In contrast, the formula with a 7.5% emulgator met the physical quality requirements of the preparation before and after storage was accelerated. Additionally, the 10% emulgator did not meet the requirements of the dispersion test after accelerated storage. The type of emulsion in all three formulas is the M / A type. The most stable physical quality of the three preparations is a formula with a 7.5% emulgator.Keywords: Lotion, Gotu kola (Centella asiatica (L.) Urb), physical quality, span, and tween.Pegagan (Centella asiatica(L.)Urb) merupakan tanaman yang banyak tumbuh di Indonesia dan telah terbukti secara ilmiah memiliki kemampuan sebagai antioksidan. Penelitian ini bertujuan  untuk membuat formula lotion yang  mengandung sari kering herba pegagan (Centella asiatica(L.) Urban) dengan variasi konsentrasi emulgator span 60 dan tween 60, dan untuk mengetahui konsetrasi span 60 dan tween 60 yang menghasilkan lotion dengan mutu fisik yang paling stabil dengan metode penyimpanan dipercepat. Sediaan dibuat lotion dengan konsentrasi sari Kering Herba  Pegagan (Centellaasiatica(L.) Urban ) sebesar 1% dan Emulgator span 60 serta tween 60 dengan variasi konsentrasi 5%, 7,5%, dan 10% kemudian stabilitas sedian lotion ditentukan berdasarkan pengamatan mutu fisik sebelum dans sesudah penyimpanan dipercepat selama 6 siklus pada suhu 5oCdan 35oC yang meliputi organeleptis, homogentias, pH, viskositas, daya sebar, dan tipe emulsi. Hasil penelitian pada pengujian kestabilan mutu fisik formula I (emulgator 5%) tidak memenuhi syarat pada uji daya sebar sebelum penyimpanan dipercepat, sedangkan Formula dengan emulgator 7,5% memenuhi persyaratan mutu fisik sediaan sebelum maupun sesudah penyimpanan dipercepat, dan formula dengan emulgator 10% tidak memenuhi syarat pada uji daya sebar setelah penyimpanan dipercepat, untuk tipe emulsi pada ketiga formula tersebut merupakan tipe emulsiM/A. Mutu fisik yang paling stabil dari ketiga sediaan tersebut adalah formula dengan emulgator 7,5%.Kata kunci : Lotion,  herba pegagan (Centella asiatica (L.) Urb), mutu fisik, span dan tween.

scholarly journals Physical Bean Quality of Arabica Coffee (Coffea Arabica) Cultivated at High and Medium Altitude

2016 ◽  
Vol 32 (3) ◽  
pp. 151-161
Author(s):  
Dwi Nugroho ◽  
Panjisakti Basunanda ◽  
Suryadi Mw
Keyword(s):  
Coffea Arabica ◽  
Block Design ◽  
Research Station ◽  
Physical Quality ◽  
Arabica Coffee ◽  
Randomized Complete Block Design ◽  
Before And After ◽  
Coffee Cultivation ◽  
Cup Quality

Reducing productivity, outbreak of insects and diseases, and decreasingin physical and cup quality are major problems for Arabica coffee cultivation inmedium altitude. The aim of this study was to investigate the effect of altitude onphysical quality in eight genotypes of Arabica coffee. This research was conductedat two locations i.e. Andungsari Research Station-Bondowoso (1250 m asl. ashigh altitude) and Kalibendo Estate-Banyuwangi (700 m asl. as medium altitude).Randomized complete block design was used with three replications. Collecteddata consisted of outturn, weight of 100 beans, shape bean normality, apparentswelling, bulk density before and after roasting. Combined analysis on the physicalquality traits of green bean showed genotype x altitude interactions on weight of100 beans, percentage of normal beans and percentage of empty bean. Altitudesignificantly influenced coffee outturn. Decreasing in altitude from 1.250 m asl.to 700 m asl. caused declining in the outturn as much 32.9%. BP 700A, K 29, K34, K 79, and K 99 were genotypes that stable to produce normal bean and emptybeans at high and medium altidute, while K 8, K 130, and SIG were genotypeswith high normal beans at high altitude but not stable. Genotype x altitude interactiondid not occur for physical quality of other variables of outturn, bulk densitybefore and after roasting, apparent swelling, percentage of round beans,percentage of elephant beans, and percentage of triage beans. Altitude showedsignificant effect on all of physical quality of bean variables.

scholarly journals New Approaches to Processing Ground-based SAR (GBSAR) Data for Deformation Monitoring

2018 ◽  
Vol 10 (12) ◽  
pp. 1936 ◽  
Author(s):  
Sichun Long ◽  
Aixia Tong ◽  
Ying Yuan ◽  
Zhenhong Li ◽  
Wenhao Wu ◽  
...  
Keyword(s):  
Signal To Noise Ratio ◽  
Atmospheric Correction ◽  
Deformation Monitoring ◽  
Atmospheric Effects ◽  
Threshold Optimization ◽  
Before And After ◽  
Multiple Threshold ◽  
The Stability ◽  
Average Coherence

In this paper, aiming at the limitation of persistence scatterers (PS) points selection, a new method for selecting PS points has been introduced based on the average coherence coefficient, amplitude dispersion index, estimated signal-to-noise ratio and displacement standard deviation of multiple threshold optimization. The stability and quality of this method are better than that of a single model. In addition, an atmospheric correction model has also been proposed to estimate the atmospheric effects on Ground-based synthetic aperture radar (GBSAR) observations. After comparing the monitoring results before and after correction, we clearly found that the results are in good agreement with the actual observations after applying the proposed atmospheric correction approach.

Application of Photogrammetric Methods for Geotechnical Monitoring of Emergency Buildings and Structures

2021 ◽  
pp. 23-36
Author(s):  
Б. А. Попов ◽  
Н. Б. Хахулина ◽  
Ю. С. Нетребина
Keyword(s):  
Technical Condition ◽  
Reliable Control ◽  
Building Structures ◽  
Control Methods ◽  
Technical Problems ◽  
Geotechnical Monitoring ◽  
Nuclear Heat ◽  
Quality Stability ◽  
The Stability

Постановка задачи. Одной из актуальных научно-технических задач в строительстве является совершенствование методов мониторинга состояния строительных конструкций (в том числе в стесненных условиях работы) при строительстве уникальных сооружений и объектов незавершенного строительства, обеспечивающих надежный контроль их качества, устойчивости и безопасности. Довольно часто возникают условиях, при которых нет возможности выполнить полноценный мониторинг отдельных видов деформаций строительных конструкций традиционными методами. Требуется разработка универсальных, надежных и удобных методов контроля различных геометрических параметров сооружения с целью своевременного принятия мер по обеспечению стабильности и устойчивости сооружения, чтобы исключить переход сооружения в ограниченно работоспособное или в аварийное состояние. Результаты и выводы. Предложенные в работе методы определения деформаций и качества изготовления строительных конструкций с использованием метрической фотосъемки позволяют провести полноценный мониторинг их технического состояния с необходимой точностью. Все перечисленные в статье способы контроля отрабатывались и проверялись на зданиях и сооружениях законсервированной Воронежской атомной станции теплоснабжения. Statement of the problem. One of the urgent scientific and technical problems facing construction is the improvement of methods for monitoring the state of building structures (including under confined working conditions) during the construction of unique structures and objects of unfinished construction, ensuring reliable control of their quality, stability and safety. Oftentimes, conditions arise where it is impossible to perform a full types of deformations of building structures using traditional methods. It is required to develop universal, reliable and convenient methods for controlling various geometric parameters of the structure in order to take timely measures to ensure the stability and stability of the structure in order to exclude the transition of the structure to a partially operable or emergency state. Results and conclusions. The suggested methods for determining deformations and the quality of manufacturing of building structures using metric photography make it possible to conduct a full-fledged monitoring of their technical condition with the required accuracy. All the control methods listed in the article were developed and tested on the buildings and structures of the mothballed Voronezh nuclear heat supply station.

scholarly journals EVALUASI KRIM ANTIOKSIDAN SOLID LIPID MICROPARTICLE EKSTRAK ETANOL DAUN KERSEN (Muntingia calabura)

2020 ◽  
Vol 15 (1) ◽  
pp. 31
Author(s):  
Amriani Sapra ◽  
Radhia Riski ◽  
Besse Jamila
Keyword(s):  
Physical Stability ◽  
Ethanol Extract ◽  
Entrapment Efficiency ◽  
Alcohol Concentration ◽  
Climatic Chamber ◽  
Solid Lipid ◽  
Accelerated Storage ◽  
Before And After ◽  
Muntingia Calabura

ABSTRAK Kersen (Muntingia calabura L.) leaves is a plant that contains flavonoids as antioxidants which can be formulated in Solid Lipid Microparticle. The aim of this study is to make Solid Lipid Microparticle cream loaded ethanol extract of kersen leaves preparation and evaluated it’s physical stability. Solid Lipid Microparticle was made of 3% kersen leaves ethanol extract with entrapment efficiency 85.75% formulated in cream preparation with variation of cetyl alcohol concentration namely F1 (2%), F2 (4%), F3 (6%), then tested it’s stability before and after accelerated storage using climatic chamber. The results showed that the three formulas fulfilled the quality of preparation with organoleptic, homogenity, type of cream, viscosity, pH, and spreadability parameters before and after accelerated conditions. Keywords : Kersen leaves, Muntingia calabura L., physical stability, Solid Lipid Microparticle Cream 

scholarly journals Changes in kinesiostabilogram parameters and movement speed of stroke patients while increasing their physical activity due to the use of biofeedback method

2021 ◽  
Author(s):  
Victoria Zaborova ◽  
Anatoly Fesyun ◽  
Konstantin Gurevich ◽  
Alevtina Oranskaya ◽  
Alexey Rylsky ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Physical Activity ◽  
Depression Scale ◽  
Movement Speed ◽  
Stroke Survivors ◽  
Before And After ◽  
Web Camera ◽  
The Stability ◽  
Complications Of Stroke

Balance disorders are complications of stroke survivors. Aim of this study was the establish effectiveness of the biofeedback approach. In this intervention study 245 patients with early diagnosis of acute disturbance of cerebral circulation (ADCC) were examined. Patients able to move independently were treated by standard conservative ADCC therapy on an outpatient approach, but they continued to have problems with coordination of movement in upright position. Then they were submitted to an increasing physical activity based on five sessions of biofeedback, i.e., a complex rehabilitation of patients with motor pathology "Trust-M" according to TU 9442-001-63704475-2010. Mobility rates were assessed using a web camera. Patients' quality of life was evaluated by SF-36 questionnaire and the Hospital Anxiety and Depression Scale (HADS). All parameters were recorded before and after 5 sessions of biofeedback. After treatment, the stability indicators improved and all patients showed a significant increase in motion rate and quality of life. At the same time, the severity of pain and of depression and anxiety decreased. Negative correlations of average strength between the quadrant and patient HADS scaling rates were obtained. In conclusion, our work shows effectiveness of the biofeedback technique for correcting coordination in stroke survivors.

scholarly journals Determining the optical stability of printed laboratory substrates with wheat pulp after ageing treatment

2021 ◽  
Vol 30 (1) ◽  
pp. 15-24
Author(s):  
Valentina Radić Seleš ◽  
◽  
Irena Bates ◽  
Ivana Plazonić ◽  
Maja Rudolf ◽  
...  
Keyword(s):  
Test Chamber ◽  
Reflectance Spectra ◽  
Artificial Ageing ◽  
Ageing Treatment ◽  
Near Ultraviolet ◽  
Optical Stability ◽  
Before And After ◽  
The Stability ◽  
Board Industry

The use of recovered paper in the paper and board industry worldwide has increased in the last decade. The recycling process affects several properties of the paper, so recovered pulp needs to be enriched with a certain amount of virgin fibre to increase the strength and quality of the paper, and thus the quality of the print. Since the cellulose-based printing substrates are sensitive to photolytic damage caused by exposure to light and high temperature, the focus of the research was to evaluate the stability of digital UV inkjet prints on laboratory substrates with wheat pulp. Assessment of the optical stability of laboratory substrates and prints made on them after ageing treatment was based on the reflectance spectra measurements before and after artificial ageing. In order to observe the optical changes that occur in cellulose printing substrates, unprinted and digital printed substrates were placed in an artificial ageing equipment SunTEST XLS+ test chamber according to standard ASTM D 6789-02. The test chamber emits visible and near ultraviolet electromagnetic radiation in the range from 290 nm to 800 nm. With the deterioration of the optical stability of unprinted and digital printed substrates, it was observed through the reflectance spectra (R) and the Euclidean colour difference (ΔE00*) that the highest colour degradation of all analyzed samples, occurs in the first 48 hours of artificial ageing. The results of this analysis confirm that the addition of wheat pulp in paper pulp provides better optical stability of unprinted and digital printed laboratory substrates.

scholarly journals Study of the stability of lipid nanoemulsions with oleic acid

2021 ◽  
Vol 12 (2-2021) ◽  
pp. 174-176
Author(s):  
E. V. Mishchenko ◽  
◽  
E. E. Timofeeva ◽  
A. S. Artamonov ◽  
M. Yu. Koroleva ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Phase Inversion ◽  
Nonionic Surfactants ◽  
Inversion Method ◽  
Ionic Surfactant ◽  
Temperature Phase ◽  
The Stability ◽  
Tween 60 ◽  
Span 60 ◽  
Phase Inversion Method

This work presents the results of a study on the effect of ionic surfactant cetriltrimethylammonium chloride (CTAB) on the size and ζ-potential of lipid nanoemulsions composed of oleic acid, prepared by temperature phase inversion method and stabilized by nonionic surfactants — Tween 60, Span 60

scholarly journals The Working Conditions and Optimisation of a Large Rainwater Harvesting and Treatment System in an Area at a Risk of Erosion

2021 ◽  
Author(s):  
Tomasz Zubala
Keyword(s):  
Suspended Solids ◽  
Rainwater Harvesting ◽  
Wholesale Market ◽  
Building Collapse ◽  
Quality Of Water ◽  
Long Run ◽  
Before And After ◽  
Operational Errors ◽  
The Stability

AbstractRainwater harvesting and treatment systems (RHTS) are used in many places around the world as a part of sustainable water management. They decrease the risk of overloading the sewage network and environmental pollution. The efficiency and reasonableness of using such solutions in specific erosive conditions are not sufficiently understood. The aim of the study was to evaluate the operation of RHTS, receiving effluents from the wholesale market and fuel station (twenty years of observations). The studied system is located in an area endangered by water erosion. In the study period, due to the accumulation of erosive phenomena, it was necessary to optimise the system (including the installation of new devices and increasing the capacity of reservoirs). The analyses referred to the stability and work safety of the most important equipment and water treatment efficiency. The quality of water in the reservoirs was measured before and after the modernisation of the system. Selected physical, oxygen, biogenic and salinity indicators were determined in the water. During the study, RHTS had a positive effect on the quality of rainwater runoff – the values of many contaminants were reduced (RHTS 1: suspended solids, nitrogen, iron, potassium; RHTS 2: conductivity, suspended solids, nitrogen). Design and operational errors were noticed that in the long run may contribute to deteriorating the operational efficiency and even lead to a building collapse (intense erosive phenomena). This study clearly demonstrates that building a rainwater management system is a highly site-specific issue.

scholarly journals FORMULASI DAN UJI STABILITAS FISIK SEDIAAN MASKER GEL PEEL-OFF EKSTRAK ETANOL DAUN MIANA (Coleus Scutelleroides (L.) Benth.) DENGAN BERBAGAI BASIS

2021 ◽  
Vol 4 (1) ◽  
pp. 36
Author(s):  
Indriyani Arman,Hosea Jaya Edy, Karlah L.R Mansauda
Keyword(s):  
Physical Stability ◽  
Ethanol Extract ◽  
Homogeneity Test ◽  
Adhesion Test ◽  
Physical Quality ◽  
Test Parameters ◽  
Different Types ◽  
Time Test ◽  
Dispersion Test ◽  
The Stability

AbstractMiana leaves (Coleus Scutelleroides (L.) Benth.) contained flavonoid compounds that has antioxidants properties. This study aimed to formulate peel-off gel mask ethanol extract from Miana leaves became peel-off gel mask that is physically stable and to knows the type of base that form a formulation with good physical quality based on the test parameters of physical properties and the stability of preparation. Formulation  of peel-off gel mask ethanol extract of miana leaves used three different types of base, they are HPMC, Carbopol, and Na.CMC. Each formula is differentiated based on base of concentration which were HPMC 4%, carbopol 1%, and Na.CMC 3%. Evaluation to predict the physical stability of the preparation included organoleptic test, homogeneity test, pH test, dispersion test, adhesion test and dry time test. In stability test, each formula is placed at temperature 27 oC for 28 days and made observation on the 1st, 7th, 14th, 21th, and 28th day. Based on the result, the ethanol extract of Miana leaves can be formulated into a peel-off mask and formulation with HPMC and Carbopol base has a good physical quality and physically stable compared to Na.CMC base.Keywords: Miana Leaves, Peel-Off Gel Mask, Stability Teh  AbstrakDaun Miana (Coleus Scutelleroides (L.) Benth.) memiliki kandungan senyawa flavonoid yang berkhasiat sebagai antioksidan. Penelitian ini bertujuan untuk memformulasikan ekstrak etanol daun Miana menjadi masker gel peel-off yang stabil secara fisik serta mengetahui jenis basis yang membentuk formulasi sediaan masker dengan mutu fisik yang baik berdasarkan parameter uji sifat fisik dan stabilitas sediaan. Formulasi sediaan masker gel peel-off  ekstrak etanol daun Miana dibuat dengan menggunakan tiga jenis basis yang berbeda yaitu HPMC, karbopol, dan Na.CMC. Masing-masing formula dibedakan berdasarkan basis konsentrasi yaitu HPMC 4%, karbopol 1%, dan Na.CMC 3%. Evaluasi yang dilakukan terhadap stabilitas fisik sediaan masker gel peel-off meliputi uji organoleptis, uji homogenitas, uji pH, uji daya sebar, uji daya lekat, dan uji waktu mengering. Uji stabilitas dilakukan pada suhu kamar (27 oC) selama 28 hari dan dilakukan pengamatan pada hari ke 1, 7, 14, 21, dan 28. Hasil uji stabilitas fisik sediaan masker gel peel-off ekstrak etanol daun Miana dapat diformulasikan dalam bentuk sediaan masker gel peel-off , dan formula masker dengan basis HPMC dan karbopol memiliki mutu fisik yang baik dan stabil secara fisik dibandingkan dengan basis Na.CMC.Kata kunci: Daun Miana, Masker gel peel-off, Uji Stabilitas.

The stability of dislocation networks under various oxygen-doping conditions in superconducting Bi2Sr2CaCu2Oy single crystals and their influence on the flux pinning properties

1994 ◽  
Vol 52 ◽  
pp. 802-803
Author(s):  
Y. Feng ◽  
X. Y. Cai ◽  
R. J. Kelley ◽  
D. C. Larbalestier
Keyword(s):  
Single Crystals ◽  
Oxygen Content ◽  
Basal Plane ◽  
Flux Pinning ◽  
Pinning Centers ◽  
Before And After ◽  
Anomalous Peak ◽  
Basal Plane Dislocation ◽  
The Stability ◽  
Further Development

The issue of strong flux pinning is crucial to the further development of high critical current density Bi-Sr-Ca-Cu-O (BSCCO) superconductors in conductor-like applications, yet the pinning mechanisms are still much debated. Anomalous peaks in the M-H (magnetization vs. magnetic field) loops are commonly observed in Bi2Sr2CaCu2Oy (Bi-2212) single crystals. Oxygen vacancies may be effective flux pinning centers in BSCCO, as has been found in YBCO. However, it has also been proposed that basal-plane dislocation networks also act as effective pinning centers. Yang et al. proposed that the characteristic scale of the basal-plane dislocation networksmay strongly depend on oxygen content and the anomalous peak in the M-H loop at ˜20-30K may be due tothe flux pinning of decoupled two-dimensional pancake vortices by the dislocation networks. In light of this, we have performed an insitu observation on the dislocation networks precisely at the same region before and after annealing in air, vacuumand oxygen, in order to verify whether the dislocation networks change with varying oxygen content Inall cases, we have not found any noticeable changes in dislocation structure, regardless of the drastic changes in Tc and the anomalous magnetization. Therefore, it does not appear that the anomalous peak in the M-H loops is controlled by the basal-plane dislocation networks.

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