scholarly journals Case Studies of a Hydrocarbon Capture Technology for Stormwater Quality Class 1 Compliance against EN BS858.1-2002 and Subsequent Field Evaluation

Water ◽  
2016 ◽  
Vol 8 (2) ◽  
pp. 48 ◽  
Author(s):  
Darren Drapper ◽  
Andy Hornbuckle
Keyword(s):  
Case Studies ◽  
Field Evaluation ◽  
Stormwater Quality ◽  
Quality Class ◽  
Class 1

Analysis of selected surface water components in the town of Siedlce, Poland

2014 ◽  
Vol 43 (1) ◽  
Author(s):  
Mariusz Kluska ◽  
Anna Marciniuk-Kluska
Keyword(s):  
Surface Water ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Surface Waters ◽  
Research Study ◽  
Absorption Spectrometry ◽  
The Other ◽  
Quality Class ◽  
Class 1 ◽  
The Town

AbstractThe paper presents results of a research study into levels of selected surface water components in Siedlce, Poland. Water was sampled in the Muchawka Reservoir and the Muchawka River in March, July and November 2012. Two techniques were applied in the study: isotachophoresis and atomic absorption spectrometry. The analysis results of water sampled in the Muchawka Reservoir indicate that they are borderline compliant with standards for the Class 1 surface waters. On the other hand, the Muchawka River samples were found to be out of any quality class.

scholarly journals Analisis Kelas Mutu Air Berdasarkan Baku Mutu di Sub DAS Kalarengkih Kabupaten Aceh Tengah

2018 ◽  
Vol 3 (3) ◽  
pp. 260-269
Author(s):  
Layli Nuriani ◽  
Hairul Basri ◽  
Khairullah Khairullah
Keyword(s):  
Water Quality ◽  
Government Regulation ◽  
Quality Standard ◽  
Population Based ◽  
Limiting Factor ◽  
Specific Criterion ◽  
Quality Class ◽  
Purposive Sampling ◽  
Water Classification ◽  
Class 1

Abstrak. Penelitian ini bertujuan untuk mengetahui kelas mutu air untuk kebutuhan penduduk berdasarkan baku mutu di sekitar Sub DAS Kalarengkih Kabupaten Aceh Tengah.. Lokasi di Sub DAS Kalarengkih Kecamatan Bintang Kabupaten Aceh Tengah. Penelitian menggunakan metode deskriptif kuantitatif yang dilaksanakan melalui survei lapang dan analisis laboratorium. Untuk pengambilan sampel air dilakukan dengan cara purposive sampling yaitu pengambilan sampel dengan cara penarikan sampel yang dilakukan memilih subjek berdasarkan kriteria spesifik yang dianggap tepat dan sesuai terhadap fenomena yang diteliti yaitu terdiri dari 5 titik sampel. analisis kelas mutu air sungai mempergunakan baku mutu sebagai pembanding untuk kelayakan kualitas parameter sungai yaitu Peraturan Pemerintah No 82 Tahun 2001 yaitu mengkaji data baku mutu air hanya untuk parameter fisika (TSS, TDS, Temperatur, Kekeruhan) dan kimia (Nitrat, Nitrit, pH, BOD, COD, Sulfat) selanjutnya dapat ditentukan klasifikasi airnya. Hasil Kelas Mutu Air Sub DAS kalarengkih berdasarkan baku mutu pada titik 1 tergolong Kelas 1 yang berada pada hulu Sub DAS Kalarengkih. Pada titik 2, 3, 4 dan 5 tergolong Kelas 4  dengan faktor pembatas Nitrit yang melebihi batas ambang baku mutu, disamping itu pada titik 4 juga terdapat nilai Nitrat yang tinggi, Nitrit terdapat pada outlet yang berada pada areal persawahan sedangkan Nitrat outletnya berada pada areal pemukiman, hal ini diduga Nitrit berasal dari hasil pemupukan dan Nitrat diduga hasil dari buangan limbah pemukiman.Analysis Class of Water Quality Based on Quality Standard in Kalarengkih Wateshed Regency of Aceh TengahAbstract. This study aims to determine the quality class of water for the needs of the population based on quality standards around the Kalarengkih Sub-Basin Central Aceh Regency .. Location in Kalarengkih Sub DAS Sub-District Bintang Regency Central Aceh. The research used quantitative descriptive method implemented through field survey and laboratory analysis. For the sampling of water is done by purposive sampling that is sampling by way of sampling conducted by choosing subject based on specific criterion which is deemed appropriate and appropriate to phenomenon studied that consist of 5 point sample. analysis of river water quality class using quality standard as a comparison for the feasibility of river parameter quality that is Government Regulation No. 82 Year 2001 that is studying data of water quality standard only for physics parameter (TSS, TDS, Temperature, Turbidity) and chemistry (Nitrate, Nitrite, pH, BOD, COD, Sulfate) can then be determined water classification. Results Quality Class Water Sub DAS kalarengkih based on the quality standard at point 1 Class Class 1 located in the upstream Kalarengkih Sub-watershed. At point 2, 3, 4 and 5 belong to Class 4 with limiting factor of Nitrite which exceed the quality standard threshold, beside that at point 4 there is also high Nitrate value, Nitrite is in outlet located in rice field area while Nitrate outlet is in area settlement, it is suspected Nitrite comes from the result of fertilization and Nitrate is suspected to result from disposal of waste settlement.

Stormwater pollutant loads modelling: epistemological aspects and case studies on the influence of field data sets on calibration and verification

2007 ◽  
Vol 55 (4) ◽  
pp. 1-17 ◽  
Author(s):  
Jean-Luc Bertrand-Krajewski
Keyword(s):  
Case Studies ◽  
Model Calibration ◽  
Current Practice ◽  
Data Sets ◽  
Stormwater Quality ◽  
Quality Models ◽  
Pollutant Loads ◽  
Detention Tank ◽  
Software Packages ◽  
Calibration And Verification

In urban drainage, stormwater quality models have been used by researchers and practitioners for more than 15 years. Most of them were initially developed for research purposes, and have been later on implemented in commercial software packages devoted to operational needs. This paper presents some epistemological problems and difficulties with practical consequences in the application of stormwater quality models, such as simplified representation of reality, scaling-up, over-parameterisation, transition from calibration to verification and prediction, etc. Two case studies (one to estimate pollutant loads at the outlet of a catchment, one to design a detention tank to reach a given pollutant interception efficiency), with simple and detailed stormwater quality models, illustrate some of the above problems. It is hard to find, if not impossible, an “optimum” or “best” unique set of parameters values. Model calibration and verification appear to dramatically depend on the data sets used for their calibration and verification. Compared to current practice, collecting more and reliable data is absolutely necessary.

Slope aspect affects the seed mass spectrum of grassland vegetation

2004 ◽  
Vol 14 (4) ◽  
pp. 379-385 ◽  
Author(s):  
Péter Csontos ◽  
Júlia Tamás ◽  
János Podani
Keyword(s):  
Case Studies ◽  
Pannonian Basin ◽  
Seed Mass ◽  
Slope Aspect ◽  
Data Sets ◽  
Chi Square ◽  
New Findings ◽  
Positive Balance ◽  
Class 1 ◽  
Species Frequencies

Seed mass distribution in grassland communities of slopes of contrasting aspect was analysed in dolomite regions of the Pannonian Basin. Species frequencies were obtained for four pairs of data sets, which originated from corresponding south- and north-facing dolomite grasslands, thus forming four independent case studies. The data sets comprised 5–15 sample plots and 51–114 (average 85) species. The species were classified using an eight-class system reflecting their mean seed mass (MSM) records (class 1 being the lowest, MSM ≤ 0.2 mg; class 8 being the highest, MSM > 50 mg). Seed mass class distributions derived from slopes of contrasting aspect showed strong significant differences in chi-square tests for trend for all the four case studies. Small-seeded species (classes 1 and 2) showed a positive balance for the south-facing slopes, whereas large-seeded species (classes 5, 6, 7 and 8) were more frequent on north-facing slopes. Species with intermediate seed mass (classes 3 and 4) were not distinctive between the slopes. These results represent strong evidence of increased seed mass in the vegetation of north-facing grasslands, when compared to their south-facing counterparts. Among the phenomena potentially responsible for the new findings, we discuss the roles of microclimatic effects (especially drought stress and light regime), grass litter, interspecific competition and seed predation.

Corporate Sustainability: Challenge to Managerial Orthodoxies

2003 ◽  
Vol 9 (1) ◽  
pp. 2-11 ◽  
Author(s):  
Dexter Dunphy
Keyword(s):  
Case Studies ◽  
Corporate Sustainability ◽  
Central Place ◽  
Marked Contrast ◽  
Sustainability Management

ABSTRACTThis paper addresses the issue of corporate sustainability. It examines why achieving sustainability is becoming an increasingly vital issue for society and organisations, defines sustainability and then outlines a set of phases through which organisations can move to achieve increasing levels of sustainability. Case studies are presented of organisations at various phases indicating the benefits, for the organisation and its stakeholders, which can be made at each phase. Finally the paper argues that there is a marked contrast between the two competing philosophies of neo-conservatism (economic rationalism) and the emerging philosophy of sustainability. Management schools have been strongly influenced by economic rationalism, which underpins the traditional orthodoxies presented in such schools. Sustainability represents an urgent challenge for management schools to rethink these traditional orthodoxies and give sustainability a central place in the curriculum.

Short-Form Application of the Screening Test of Spanish Grammar and the Northwestern Syntax Screening Test to Latino Children

1978 ◽  
Vol 9 (4) ◽  
pp. 220-235
Author(s):  
David L. Ratusnik ◽  
Carol Melnick Ratusnik ◽  
Karen Sattinger
Keyword(s):  
New York ◽  
Case Studies ◽  
Metropolitan Area ◽  
Screening Test ◽  
Normative Data ◽  
Short Form ◽  
Latino Children ◽  
Data Application ◽  
York Metropolitan Area ◽  
Multiple Regression Technique

Short-form versions of the Screening Test of Spanish Grammar (Toronto, 1973) and the Northwestern Syntax Screening Test (Lee, 1971) were devised for use with bilingual Latino children while preserving the original normative data. Application of a multiple regression technique to data collected on 60 lower social status Latino children (four years and six months to seven years and one month) from Spanish Harlem and Yonkers, New York, yielded a small but powerful set of predictor items from the Spanish and English tests. Clinicians may make rapid and accurate predictions of STSG or NSST total screening scores from administration of substantially shortened versions of the instruments. Case studies of Latino children from Chicago and Miami serve to cross-validate the procedure outside the New York metropolitan area.

Case Studies for Telepractice in AAC

2014 ◽  
Vol 23 (1) ◽  
pp. 42-54 ◽  
Author(s):  
Tanya Rose Curtis
Keyword(s):  
Service Delivery ◽  
Case Studies ◽  
Eye Gaze ◽  
Cognitive Impairments ◽  
Perceived Barriers ◽  
Computer Experience ◽  
Access Methods ◽  
Complex Communication Needs ◽  
Barriers To Service ◽  
Communication Needs

As the field of telepractice grows, perceived barriers to service delivery must be anticipated and addressed in order to provide appropriate service delivery to individuals who will benefit from this model. When applying telepractice to the field of AAC, additional barriers are encountered when clients with complex communication needs are unable to speak, often present with severe quadriplegia and are unable to position themselves or access the computer independently, and/or may have cognitive impairments and limited computer experience. Some access methods, such as eye gaze, can also present technological challenges in the telepractice environment. These barriers can be overcome, and telepractice is not only practical and effective, but often a preferred means of service delivery for persons with complex communication needs.

What Makes for Effective Online Treatment?

ASHA Leader ◽  
2013 ◽  
Vol 18 (1) ◽  
pp. 12-13
Author(s):  
Kristen Chmela
Keyword(s):  
Case Studies ◽  
Executive Director ◽  
Fluency Disorders ◽  
Online Treatment

In November, Kristen Chmela—executive director of the Chmela Fluency Center in Long Grove, Ill.—chatted with participants from ASHA’s online conference, Case Studies in Fluency Disorders. The Leader listened in.

Sign in / Sign up

Export Citation Format

Share Document