scholarly journals Uncertainty Estimation of the Fe Content Measurement in the Clean Water Using UV- Vis Spectrophotometer

2019 ◽  
Vol 1 (1) ◽  
pp. 1-5
Author(s):  
Adi Syahputra
Keyword(s):  
Quality Standards ◽  
Sample Volume ◽  
Uncertainty Estimation ◽  
Clean Water ◽  
True Value ◽  
A Value ◽  
Fe Content ◽  
Standard Solution ◽  
Range Of Values ◽  
Orange Solution

Good laboratories should be able to apply procedures uncertainty for measuring of both conventional and instrument equipment. As well as the testing for Fe content using UV-Vis Spectrophotometer. As for the purpose for calculating the uncertainty estimated to determine the range of values within which estimated the true value of the testing standard solution Fe using UV-Vis Spectrophotometer. The uncertainty estimation are influenced by several factors such as sample used, reading of spectrophotometer, repeatability, sample volume. The uncertainty of the calculation obtained a value of ± 0,02 mg/L. Further testing of Fe content in the clean water using UV-Vis Spectrophotometer  at the 500 nm wavelength which forms an orange solution as indication of Fe content in the water. The result of Fe content has quality standards according to the spesifications issued by ministry of health Republic of Indonesia  in 2010 for drinking water.

scholarly journals PENURUNAN KADAR Fe DAN Mn PADA AIR SUMUR GALI DENGAN AERASI GELEMBUNG UDARA DI DESA SIDING KECAMATAN BANCAR KABUPATEN TUBAN

2014 ◽  
Vol 12 (1) ◽  
pp. 35-42
Author(s):  
Indarti Trisetyani ◽  
Joko Sutrisno
Keyword(s):  
Quality Standards ◽  
Well Water ◽  
Clean Water ◽  
Health Minister ◽  
Water Quality Standards ◽  
Air Supply ◽  
Fe Content ◽  
Fe And Mn ◽  
Mn Content ◽  
The Village

Wells water in the village of Siding, Bancar, Tuban contains Fe and Mn more thanmaximum limit allowed by the health minister number 416/Menkes/PER/IX/1990, for level of Fe inthe clean water should not be more than 1,0 mg/l and Mn 0,5 mg/l. This research aims to reducethe content of Fe and Mn in wells water with bubbles aeration so that will meet quality standards ofclean water, to find the length of time and effective aeration and decreased Fe and Mn fromtreatment with bubbles aeration. The research is done using a plastic tub of aeration, air supply isdone by pumping water size 17 w and nozle size 1,5 mm by the time variation 20, 40 and 60minutes.  Sampling was performed 3 times for each treatment, than analyzed in the laboratory toknow the decrease levels of Fe and Mn. The results of research showed that the levels of Fe andMn were high in well water very good to treatment by bubbles aeration. The beginning of level Fe3,1 mg/l and Mn 0,87 mg/l, after aerated Fe level in water is 0,0037 mg/l and Mn 0,0491 mg/l (appropriate water quality standards). Average decreased of Fe content after the  bubbles aeratedfrom 20 minutes at 90 %, 40 minutes at 96 %, 60 minutes at 95 % and Mn content after aerated for20 minutes decreased 51 %, 40 minutes 54 %, 60 minutes 75 %.

Digestible cell wall and undigested cellular contents of two grasses of low net energy value for growing cattle

1982 ◽  
Vol 99 (1) ◽  
pp. 207-208 ◽  
Author(s):  
K. W. Moir
Keyword(s):  
Cell Wall ◽  
Organic Matter ◽  
Dry Matter ◽  
Total Cell ◽  
Net Energy ◽  
Previous Evidence ◽  
Energy Value ◽  
A Value ◽  
Net Energy Value ◽  
Range Of Values

SUMMARYIn two grasses of low net energy value for growth and fattening of cattle, digestible cell-wall values were close to 40% of forage organic matter (OM), similar to the expected value for grass. A value of 14% of forage OM for apparently undigested cellular contents in both grasses was just outside the range of values for grass. The data supported previous evidence that total cell wall is the only value that can be used at present to define grass in terms of its digestible dry matter.

scholarly journals Determination of the Value of Intangible Assets in the Companies of Lithuania

2017 ◽  
Vol 14 (2) ◽  
pp. 55-68 ◽  
Author(s):  
Rita Bužinskienė
Keyword(s):  
Financial Management ◽  
Intangible Assets ◽  
Fair Value ◽  
Financial Information ◽  
Financial Accounting ◽  
True Value ◽  
A Value ◽  
The Impact

AbstractIn accordance with generally accepted accounting standards, most intangibles are not accounted for and not reflected in the traditional financial accounting. For this reason, most companies account intangible assets (IAs) as expenses. In the research, 57 sub-elements of IAs were applied, which are grouped into eight main elements of IAs. The classification of IAs consists in two parts of assets: accounting and non-accounting. This classification can be successfully applied in different branches of enterprises, to expand and supplement the theoretical and practical concepts of the company's financial management. The article proposes to evaluate not only the value of financial information for IAs (accounted) but also the value of non-financial information for IAs (non-accounted), thus revealing the true value of IAs that is available to the companies of Lithuania. It names a value of general IAs. The results of the research confirmed the IA valuation methodology, which allows companies to calculate the fair value of an IA. The obtained extended IAs valuation information may be valuable to both the owners of the company and investors, as this value plays an important practical role in assessing the impact of IAs on the market value of companies.

scholarly journals Framing the Values of Vernacular Architecture for a Value-Based Conservation: A Conceptual Framework

2021 ◽  
Vol 13 (9) ◽  
pp. 4974
Author(s):  
Obafemi A. P. Olukoya
Keyword(s):  
Vernacular Architecture ◽  
Conservation Strategy ◽  
Participatory Process ◽  
Value Assessment ◽  
A Value ◽  
Wide Range ◽  
Flexible Framework ◽  
Value Model ◽  
Contextual Values ◽  
Range Of Values

While a growing number of researchers have provided series of tough critiques of the typology-led heritage value assessment over the recent years, the impacts have been constrained by the continued obsession with expanding the list of the predetermined value typologies rather than escaping its limitations. While these sustained debates have provided important insights, this article argues that operationalizing these predetermined ‘one-size-fits-all’ value typologies is symptomatic of a number of shortcomings, especially in the context of capturing the pluralities of values in contextualized heritage such as vernacular architecture. It also often undermines inclusivity and participation in the valuing processes. However, rather than simply rejecting the values-based paradigm, this article proposes a conceptual value assessment framework that is informed by the theorization of vernacular architecture as a contextualized heritage. The proposed Vernacular Value Model (VVM) puts forward the ‘when(s)’ and ‘how(s)’ of amalgamating both technical and normative processes to capture the range of contextual values present in built vernacular heritage. To this end, this article posits that by drawing on such a proposed flexible framework, the conservation strategy for built vernacular heritage can be propagated as an inclusive and participatory process which captures the wide range of values for a more sustainable practices for conservation.

Analysis of Chemical Properties and Heavy Metals from Cisadane River, Tangerang, Indonesia

2021 ◽  
Vol 18 (1) ◽  
pp. 81-87
Author(s):  
Desy Rosarina ◽  
Ellysa Kusuma Laksanawati ◽  
Dewi Rosanti
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Chemical Properties ◽  
Data Retrieval ◽  
Quality Standards ◽  
Class Ii ◽  
Quality Standard ◽  
Water Quality Standards ◽  
Water Quality Standard ◽  
A Value

This paper explained heavy metals and chemical properties from the Cisadane River in Tangerang City. A survey method was used to determine the place for sampling the test material. Water measurement is carried out in situ and laboratory tests. Data retrieval was done by purposive sampling determining three observation stations, namely in the Taman Gajah Tunggal park area (station1), Babakan Cikokol residential area (station 2), and Karawaci paper mill area (station 3). The analysis was carried out exactly using analysis. Namely, analysis carried out in the laboratory. The parameters observed were COD, phosphate, DO, BOD, pH. Results of this study informed the water quality in the Cisadane City river did not meet Class II Water Quality Standards based on Government Regulation Number 82, the year 2001. The COD content only meets class II water quality standards at stations 1 and 3. BOD and phosphate content is high and exceeds class II water quality standards. Heavy metal content still meets the water quality standard threshold with a value of Cd less than 0.01 mg/L, Cu less than 0.02 mg/L, Pb less than 0.03mg/L, and Cr less than 0.05mg/L. Zn content exceeds the water quality standard threshold at station three and meets water quality standards at stations 1 and 2 with a value of less than 0.05mg/L.

Direct spectrophotometry of magnesium in serum after reaction with hexokinase and glucose-6-phosphate dehydrogenase.

1985 ◽  
Vol 31 (5) ◽  
pp. 703-705 ◽  
Author(s):  
M Tabata ◽  
T Kido ◽  
M Totani ◽  
T Murachi
Keyword(s):  
Spectrophotometric Method ◽  
Present Method ◽  
Reaction Rate ◽  
Colorimetric Method ◽  
Simple Method ◽  
True Value ◽  
A Value ◽  
Glucose 6 Phosphate Dehydrogenase ◽  
Direct Spectrophotometry

Abstract We describe a simple method for determining magnesium in serum by using hexokinase (EC 2.7.1.1) and glucose-6-phosphate dehydrogenase (EC 1.1.1.49). The method is based on determination of the reaction rate of hexokinase activated by Mg2+, which participates in the hexokinase reaction as the substrate in the form of a Mg X ATP2- complex. The reaction rate is determined from the change in absorbance at 340 nm as NADPH is produced by the action of glucose-6-phosphate dehydrogenase. This simple and rapid spectrophotometric method does not require expensive instrumentation, but results correlate satisfactorily with those obtained by atomic absorption spectroscopy. Thus, the present method gives a "true" value for magnesium in serum, a value appreciably lower than that obtained by an earlier colorimetric method, the Xylidyl Blue II method (Biochem Med 7: 208-217, 1973), which lacks specificity.

How do explicitly stated hospital trust values relate to their CQC ratings?

BMJ Leader ◽  
2018 ◽  
Vol 2 (2) ◽  
pp. 68-70
Author(s):  
Nathan Hamnett ◽  
Naomi Patel ◽  
Kathryn Nelson ◽  
Tom Harrison ◽  
Nicholas White
Keyword(s):  
Quality Improvement ◽  
National Health Service ◽  
Health Service ◽  
Service Delivery ◽  
National Health ◽  
Care Quality ◽  
A Value ◽  
Care Quality Commission ◽  
Organisational Values ◽  
Range Of Values

IntroductionFor National Health Service(NHS) Trusts in the process of setting internal organisational values, it would be useful to see if there was a correlation between certain organisational values and Care Quality Commission (CQC) ratings to enable quality improvement.MethodsTo examine this, we identified the CQC ratings of the NHS England provider trusts and identified and listed the trust’s values. These values were then categorised and a comparison made of well-performing and underperforming trusts.ResultsA total of 43 different values were identified, with a total of 800 values being used across all 188 trusts. In the reviewed hospitals, a broad range of values were found with some not meeting common definitions of what a value is. All trusts included some aspect of behaviour in their values.ConclusionWell-performing hospitals are more likely to be open and honest with aspirational values, whereas those which are not are more likely to be focused on day to day service delivery with operational or proscriptive values. There was considerable variation from the published NHS constitution values with outstanding and good trusts having more variance from the values in the NHS constitution than trusts rated requiring improvement or inadequate.

scholarly journals Are the Fractionation Corrections Correct: Are the Isotopic Shifts for 14C/12C Ratios in Physical Processes and Chemical Reactions Really Twice Those for 13C/12C?

Radiocarbon ◽  
2011 ◽  
Vol 53 (4) ◽  
pp. 691-704 ◽  
Author(s):  
John Southon
Keyword(s):  
Chemical Reactions ◽  
Isotopic Fractionation ◽  
Theoretical Work ◽  
Chemical Processes ◽  
Physical Processes ◽  
Isotopic Discrimination ◽  
True Value ◽  
A Value ◽  
Isotopic Shifts ◽  
Physical And Chemical

Conventional radiocarbon calculations correct for isotopic fractionation using an assumed value of 2.0 for the fractionation of 14C relative to 13C. In other words, isotopic discrimination in physical and chemical processes is assumed to cause relative shifts in 14C/12C ratios that are exactly double those of 13C/12C. This paper analyzes a 1984 experiment that produced a value for the fractionation ratio in photosynthesis of 2.3, which is used to this day by some researchers in the fields of hydrology and speleothem geochemistry. While the value of 2.3 is almost certainly incorrect, theoretical work suggests that the true value may indeed deviate from 2.0, which would have significant implications for 14C calculations.

Stucture of 1/2 Dislocations In γ-Tial by High Resolution Tem and Embedded Atom Method Modelling

1994 ◽  
Vol 364 ◽  
Author(s):  
J. P. Simmons ◽  
M. J. Mills ◽  
S. I. Rao
Keyword(s):  
High Resolution ◽  
Atomistic Simulation ◽  
Embedded Atom Method ◽  
Simulation Methods ◽  
Embedded Atom ◽  
A Value ◽  
High Resolution Tem ◽  
Atomistic Calculations ◽  
Range Of Values ◽  
Limit Estimate

AbstractHigh Resolution TEM (HRTEM) observations of a dislocation in γ-TiAl are compared directly with atomistic calculations of dislocation structures performed with atomistic potentials in order to obtain an estimate of the Complex Stacking Fault Energy (γcsf). A value of between 470 and 620 mJ/M2 was obtained. HRTEM observations are presented of a Ti-52AI sample, containing a dislocation with Burgers vector 1/2<110> and 60° line orientation. This image is matched against images simulated from the outputs of Embedded Atom Method (EAM) simulations, using potentials that were fit to bulk γ-TiAl properties. Two atomistic simulation methods were employed in order to give the range of values for γcsf. In the first of these methods, three EAM potentials were used to simulate the stress-free core structure. These were fit so as to produce three different values of γcsf, all other properties being roughly the same as the literature values for γ-TiAI. All of these potentials produced cores that were more extended than the experimental observation. Thus a value of 470 mJ/M2, being the highest value of γcsf obtainable for the EAM potentials, is reported as a low limit estimate of γcsf for γ-TiAl. An upper limit estimate of the value of γcsf was obtained by applying an external ‘Escaig’ stress that forced the Shockley partials to further constrict, simulating the effect of an increase in γcsf, The preliminary value calculated from this procedure was 620 mJ/M2.

The behaviour of an assembly of rotund, rigid, cohesionless particles. Ill

1969 ◽  
Vol 310 (1500) ◽  
pp. 21-34 ◽  
Keyword(s):  
Triaxial Test ◽  
Peak Stress ◽  
Formal Proof ◽  
Limiting State ◽  
Slip Lines ◽  
A Value ◽  
Slip Bands ◽  
Shearing Resistance ◽  
Degree Of Anisotropy ◽  
Range Of Values

In the two previous parts a formal proof has been given of the stress-dilatancy equation of Rowe for an assembly of rigid, cohesionless particles. It has been shown that states of anisotropy arising in the triaxial test may be derived by considering the relative motions of the particles, there being a limiting state of anisotropy which can be approached after large deformations have occurred. It is now shown that the accompanying dilation ultimately destroys the high state of anisotropy, the degree of anisotropy decreasing with increasing volume. When ultimately the assembly is deforming at constant volume, the angle of shearing resistance Φ c. v. has a value which may be calculated from the angle of particle friction Φ μ , and the calculation is performed for a range of values of Φ μ . The formation of slip bands in the triaxial test is then discussed, and it is shown that, under uniform stress, slip lines are not to be expected until well after the attainment of the peak stress, except at low values of Φ μ . The fall-off in stress in the triaxial test is shown to arise, not from the formation of slip lines, but from the destruction of anisotropy due to dilation.

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