River Outfalls, Estuaries and the Marine Environment

1984 ◽  
Vol 16 (5-7) ◽  
pp. 57-68 ◽  
Author(s):  
W F Lester
Keyword(s):  
Marine Environment ◽  
Sea Water ◽  
Flow Characteristics ◽  
Physical Characteristics ◽  
Severn Estuary ◽  
Water Mixing ◽  
Quality Aspects

Theme 2 deals with the quality aspects of discharges from rivers to estuaries, direct discharges to estuaries, the twice daily influx of sea water mixing with the water remaining in the estuary and the effect of the estuary discharge on the adjacent marine environment. The paper compares the flow characteristics and qualities of the Rivers Medway, Trent and Severn at the tidal limits at different periods and indicates the effect of these discharges on the quality of the upper reaches of the estuary. The extent and distribution in place and time of the oxygen sag in the Trent estuary is recorded as also is the concentration of cadmium and ammonia in the Severn estuary. The physical characteristics of the estuaries are described and reference is made to the statute law relating to control of estuarial pollution.

scholarly journals Compositional aspects and bacteriological quality of camel milk from Tunisian oasis

2021 ◽  
Author(s):  
Khaldi Zahran ◽  
Nafti Mounir ◽  
Jilani Tabarek
Keyword(s):  
Chemical Composition ◽  
Raw Milk ◽  
Fat Content ◽  
Physical Characteristics ◽  
Total Solids ◽  
Age Class ◽  
Quality Aspects ◽  
Mineral Concentrations ◽  
The Impact

Abstract This study was planned to investigate the raw milk characteristics and quality aspects and to evaluate the impact of nongenetic factors on physicochemical composition and microbial quality of milk from local Maghrebi camels (Camelus dromedarius) kept under a traditional system in oasis areas, southern west, Tunisia. Forty-nine individual milk samples were collected from lactating Negga over two periods of the year (winter and summer). Animals belonging to private flocks were between 5 and 17.5 years of age, with parity numbers ranging from first to sixth. Samples were analyzed for physical parameters, chemical composition, mineral concentrations, and microbiological features according to standard methods. The overall means of physical characteristics were 6.63 ± 0.22, 1030.63 ± 2.54, and 19.11 ± 4.08 for pH, density, and acidity, respectively. No significant association (P > 0.05) between physical characteristics and nongenetic factors has been observed. The average results of chemical composition for dry matter, protein, fat, casein, lactose, ash, and casein/protein ratio were 115.24±15.67g/L, 30.98±6.40 g/L, 32.84±4.88 g/L, 22.77±4.27 g/L, 37.21±4.64 g/L, 6.87±1.59 g/L, and 0.74±0.06 g/L respectively. Season, parity, and age were confirmed to impinge significantly on chemical components, except for lactose. The maximum contents of total solids, protein, casein, and fat content were observed during winter. The third lactation was characterized with the highest content of total solids, protein, casein, and lactose; while the highest fat content was recorded in the second lactation. Lactose content was stable throughout all the studied age classes (P > 0.05), whereas the other chemical constituents, showed an obvious superiority in the age class of 7≤ age ≤ 9 years. Season, parity, and age of the animal exerted a significant effect on all minerals. The highest levels of Ca, P, and K were recorded in the winter (P<0.01) whereas Na showed an opposite pattern and was higher in the summer (P<0.01). All major minerals were higher in milk from multiparous than primiparous camels, with maximum concentrations at the fourth lactation. The uppermost levels of mineral concentrations were recorded in the age class of 7≤ age ≤ 9 years. The lowest ones were those of animals over 12 years old. The microbial analysis of raw milk which is affected by season, parity, and age showed higher overall contamination levels in all studied bacterial counts. The highest levels were observed in winter, among the multiparous and oldest Negga. The results highlighted the complete absence of the two dangerous pathogens Salmonella and CSR in all analyzed samples.

scholarly journals Penggunaan Bahan Tambah Abu Vulkanik Gunung Gamalama Terhadap Perilaku Beton pada Daerah Lingkungan Laut

2017 ◽  
Vol 6 (01) ◽  
pp. 11
Author(s):  
Imran Imran ◽  
Mufti Amir Sultan ◽  
Julfikra Sastra Tuahuns
Keyword(s):  
Marine Environment ◽  
Environmental Effects ◽  
Compression Strength ◽  
Volcanic Ash ◽  
Sea Water ◽  
Tidal Wave ◽  
Concrete Mixture ◽  
Normal Concrete

AbstrakBeton yang terpengaruh lingkungan laut dapat mengalami penurunan kemampuan yang lebih cepat dari beton yang di darat. Penambahan abu vulkanik sebanyak 15,6% dari berat semen dalam adukan beton menghasilkan mutu beton yang lebih baik dan diharapkan juga dapat memberikan ketahanan yang lebih baik pada beton terhadap efek lingkungan. Pengujian dimaksudkan untuk mengetahui perubahan pada beton setelah 1(satu) bulan dan setelah 6(enam) bulan diletakkan pada lingkungan laut. Hasil yang diperoleh dari kuat tekan beton normal dan beton abu vulkanik dari gunung Gamalama umur 28 hari yaitu sebesar 309,43 kg/cm2 dan 414,89 kg/cm2. Setelah 1(satu) bulan, kuat tekan beton normal yang terendam air laut dan yang terpengaruh pasang surut mengalami peningkatan menjadi 353,47 kg/cm2 dan 392,87 kg/cm2, tetapi setelah 6(enam) bulan beton normal yang terendam air laut mengalami penurunan menjadi 328,20 kg/cm2,sedangkan beton normal pada lingkungan pasang surut meningkat menjadi 398,43 kg/cm2. Hasil untuk kuat tekan beton abu vulkanik masih mengalami peningkatan setelah 1(satu) bulan dan 6(enam) bulan, beton abu vulkanik yang terendam air menghasilkan kuat tekan sebesar 449,66 kg/cm2 dan 538.20 kg/cm2, dan untuk beton abu vulkanik pada lingkungan pasang surut selama 1(satu) bulan dan 6(enam) bulan menghasilkan kuat tekan sebesar 440,39 kg/cm2 dan 514,56 kg/cm2. Kata kunci: lingkungan laut, abu vulkanik gamalama, kuat tekan. AbstractConcrete influenced by marine environment could experience a faster decrease in its ability than those on land. The addition of volcanic ash of 15.6% of the cement weight in the concrete mixture produces better quality of concrete and it is expected that it could give better endurance to the concrete toward the environmental effects. The test was aimed to find out the change in the concrete after 1 (one) and 6 (six) months kept in the marine environment. Result obtained that compression strength of normal concrete and concrete with addition of volcanic ash from Gamalama Mountain with lifespan of 28 days was 309.43 kg/cm2 and 414.89 kg/cm2, respectively. After 1 (one) month, the compression strength of normal concrete submerged in sea water and influenced by tidal wave experienced an increase into 353.47 kg/cm2 and 392.87 kg/cm2, respectively. However, after 6 (six) months normal concrete submerged in sea water experienced a decrease into 328.20 kg/cm2, whereas normal concrete in tidal environment increased into 398.43 kg/cm2. The result for the compression strength of volcanic ash concrete still experienced an increase after 1 (one) month and 6 (six) months. Volcanic ash concrete submerged in the water produced compression strength of 449,66 kg/cm2 and 538.20 kg/cm2, and for volcanic ash concrete in tidal environment for 1 (one) month and 6 (six) months produced compression strength of 440.39 kg/cm2 and 514.56 kg/cm2, respectively. Keyword: sea environment, Gamalama volcanic ash, compression strength.

Investigational Studies on Quantity of Salinity in Netravati River Estuary Sand-Coastal Karnataka

2018 ◽  
Vol 6 (6) ◽  
pp. 46
Author(s):  
Raveesha P ◽  
K. E. Prakash ◽  
B. T. Suresh Babu
Keyword(s):  
Brackish Water ◽  
Sea Water ◽  
Salt Water ◽  
Construction Material ◽  
Salt Content ◽  
River Estuary ◽  
Sand Sample ◽  
River Sand ◽  
Natural Aggregates

The salt water mixes with fresh water and forms brackish water. The brackish water contains some quantity of salt, but not equal to sea water. Salinity determines the geographic distribution of the number of marshes found in estuary. Hence salinity is a very important environmental factor in estuary system. Sand is one major natural aggregate, required in construction industry mainly for the manufacture of concrete. The availability of good river sand is reduced due to salinity. The quality of sand available from estuarine regions is adversely affected due to this reason. It is the responsibility of engineers to check the quality of sand and its strength parameters before using it for any construction purpose. Presence of salt content in natural aggregates or manufactured aggregates is the cause for corrosion in steel. In this study the amount of salinity present in estuary sand was determined. Three different methods were used to determine the salinity in different seasonal variations. The sand sample collected nearer to the sea was found to be high in salinity in all methods.  It can be concluded that care should be taken before we use estuary sand as a construction material due to the presence of salinity.

A Framework for Non-Nominal Visualization and Perceived Quality Evaluation

2011 ◽  
Author(s):  
Ola Wagersten ◽  
Karin Forslund ◽  
Casper Wickman ◽  
Rikard So¨derberg
Keyword(s):  
Industrial Process ◽  
Perceived Quality ◽  
Product Development Process ◽  
Functional Quality ◽  
Quality Aspects ◽  
System Solution ◽  
Comprehensive Framework ◽  
Variation Simulation ◽  
Support Evaluation

Perceived Quality clusters different aspects that influence the customer’s perception of non-functional quality on a product that are perceive through senses. All together those aspects and the harmony between them reflect the producer’s ability to control product parameters and thereby also mirror the functional quality of the product. High Perceived Quality cannot be added to the product at the end of the developing process. Project prerequisites, system solution, factory capability etc. are criterion to succeed. Therefore, it is important to be able to evaluate Perceived Quality early in the process when product system solutions and architecture are defined, although data maturity is low. This paper presents a comprehensive framework to manage and support evaluation of Perceived Quality aspects in a product development process. The framework is based on an industrial process in combination with recent research within the field. The framework focuses on activities that can be performed at different stages in the developing process based on maturity of the CAD or styling data. For example, if the styling data is divided into different components by split-lines it has reached higher level of maturity then styling data that not has been divided. Consequently, the choice of applied method is based on data maturity, regardless phase in the developing process. The framework contains methods based on several different simulation and analysis techniques. Design methods, Computer-Aided Tolerancing and FEA based non-rigid variation simulation are represented in the framework.

scholarly journals Physical Characteristics and Microbial Quality of Ostrich Meat in Relation to the Type of Packaging and Refrigerator Storage Time

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3445
Author(s):  
Olaf K. Horbańczuk ◽  
Artur Jóźwik ◽  
Jarosław Wyrwisz ◽  
Joanna Marchewka ◽  
Agnieszka Wierzbicka
Keyword(s):  
Storage Time ◽  
Modified Atmosphere Packaging ◽  
Physical Characteristics ◽  
Modified Atmosphere ◽  
Packaging System ◽  
Initial Ph ◽  
Viable Bacteria ◽  
L Value ◽  
Meat Samples

The aim of this study was to evaluate the effect of the packaging system type on the physical characteristics and microbial changes in ostrich meat during refrigerated storage. The applied packaging systems were vacuum packaging (VP) and modified atmosphere packaging (MAP) using two combinations of gases: MAP1 (40% O2/40% CO2/20% N2) and MAP2 (60% O2/30% CO2/10% N2). Eight meat samples were obtained in three replicates for all parameters, except for pH, for which six replicates were obtained from the M. ilifibularis (IF) muscle, and were stored in a refrigerator at 2 °C and analyzed at 0, 4, 8, 12 and 16 days for the effect of packaging methods on physical meat quality. The initial pH (5.99) decreased at the end of the storage time for MAP1 to 5.81, whereas VP was stable from day 0 to 12 and increased up to 6.08 on day 16. Regarding meat color, the L* value increased during storage for MAP1 and MAP2 from 36.99 to 40.75 and 41.60, respectively, whereas it declined for VP to 34.22. The same tendencies were reported for redness (a*) and yellowness (b*). Drip loss was the lowest in MAP1 and highest in VP. The lowest total viable bacteria counts were identified in VP, as compared to MAP1 and MAP2.

scholarly journals Quality of care for people with multimorbidity: a focus group study with patients and their relatives

BMJ Open ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. e047025
Author(s):  
Nadine Janis Pohontsch ◽  
Josefine Schulze ◽  
Charlotte Hoeflich ◽  
Katharina Glassen ◽  
Amanda Breckner ◽  
...  
Keyword(s):  
Quality Of Care ◽  
Focus Groups ◽  
Healthcare System ◽  
Qualitative Content Analysis ◽  
Coordinated Care ◽  
Treatment Standards ◽  
Focus Group Study ◽  
Treatment Regimens ◽  
Quality Aspects

BackgroundPrevalence of people with multimorbidity rises. Multimorbidity constitutes a challenge to the healthcare system, and treatment of patients with multimorbidity is prone to high-quality variations. Currently, no set of quality indicators (QIs) exists to assess quality of care, let alone incorporating the patient perspective. We therefore aim to identify aspects of quality of care relevant to the patients’ perspective and match them to a literature-based set of QIs.MethodsWe conducted eight focus groups with patients with multimorbidity and three focus groups with patients’ relatives using a semistructured guide. Data were analysed using Kuckartz’s qualitative content analysis. We derived deductive categories from the literature, added inductive categories (new quality aspects) and translated them into QI.ResultsWe created four new QIs based on the quality aspects relevant to patients/relatives. Two QIs (patient education/self-management, regular updates of medication plans) were consented by an expert panel, while two others were not (periodical check-ups, general practitioner-coordinated care). Half of the literature-based QIs, for example, assessment of biopsychosocial support needs, were supported by participants’ accounts, while more technical domains regarding assessment and treatment regimens were not addressed in the focus groups.ConclusionWe show that focus groups with patients and relatives adding relevant aspects in QI development should be incorporated by default in QI development processes and constitute a reasonable addition to traditional QI development. Our QI set constitutes a framework for assessing the quality of care in the German healthcare system. It will facilitate implementation of treatment standards and increase the use of existing guidelines, hereby helping to reduce overuse, underuse and misuse of healthcare resources in the treatment of patients with multimorbidity.Trial registration numberGerman clinical trials registry (DRKS00015718), Pre-Results.

Keeping Quality of Pacific Coast Dogfish

1959 ◽  
Vol 16 (6) ◽  
pp. 791-794 ◽  
Author(s):  
R. H. Moyer ◽  
B. A. Southcott ◽  
E. G. Baker ◽  
H. L. A. Tarr
Keyword(s):  
Pacific Coast ◽  
Sea Water ◽  
Total Volatile ◽  
Bacterial Counts ◽  
Ph Values ◽  
Appreciable Increase ◽  
Muscle Ph ◽  
Keeping Quality ◽  
Viable Bacteria

Pacific coast dogfish (Squalus suckleyi) were held 21 days in ice and in refrigerated sea water with and without added chlortetracycline, viable bacterial counts and volatile bases being determined periodically. Viable bacteria increased sharply after about 14 days but the muscle pH values showed little or no increase. No appreciable increase in the total volatile base or trimethylamine content of the muscle was noted until the fish were stored for more than 2 weeks, and then the increases observed were comparatively small.

Hospital end-of-life care: families’ free-text notes

2020 ◽  
pp. bmjspcare-2020-00239
Author(s):  
Sandra Kurkowski ◽  
Johannes Radon ◽  
Annika R Vogt ◽  
Martin Weber ◽  
Stephanie Stiel ◽  
...  
Keyword(s):  
Palliative Care ◽  
Quality Of Care ◽  
End Of Life ◽  
End Of Life Care ◽  
Qualitative Content Analysis ◽  
Free Text ◽  
Life Care ◽  
Quality Aspects ◽  
Care Of The Dying

BackgroundPalliative care strives to improve quality of life for patients with incurable diseases. This approach includes adequate support of the patients’ loved ones. Consequently, loved ones have personal experiences of providing end-of-life care for their next. This is a resource for information and may help to investigate the loved ones’ perspectives on need for improvements.AimTo identify further quality aspects considered important by loved ones to improve the quality of care at the end of life as an addition to quantitative results from the Care of the Dying Evaluation for the German-speaking area (CODE-GER) questionnaire.DesignWithin the validation study of the questionnaire ‘Care of the Dying Evaluation’ (CODETM) GER, loved ones were asked to comment (free text) in parallel on each item of the CODE-GER. These free-text notes were analysed with the qualitative content analysis method by Philipp Mayring.Setting/participantsLoved ones of patients (n=237), who had died an expected death in two university hospitals (palliative and non-palliative care units) during the period from April 2016 to March 2017.Results993 relevant paragraphs were extracted out of 1261 free-text notes. For loved ones, important aspects of quality of care are information/communication, respect of the patient’s and/or loved one’s will, involvement in decision-making at the end of life (patient’s volition) and having the possibility to say goodbye.ConclusionsIt is important for loved ones to be taken seriously in their sorrows, to be informed, that the caregivers respect the patients’ will and to be emotionally supported.Trial registration numberThis study was registered at the German Clinical Trials Register (DRKS00013916).

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