scholarly journals A SAND BYPASSING SYSTEM USING A JET PUMP

1976 ◽  
Vol 1 (15) ◽  
pp. 78 ◽  
Author(s):  
E.C. McNair
Keyword(s):  
Unit Cost ◽  
Coastal Areas ◽  
Tidal Inlets ◽  
Jet Pump ◽  
Tidal Excursion ◽  
Almost All ◽  
Floating Plant

All harbors and tidal inlets that are located in coastal areas have one characteristic in common—the need to bypass littoral materials that collect nearby. If natural harbors and tidal inlets are left unattended, bypassing will often occur naturally, but in the process, the harbor or inlet is usually rendered unfit for commercial or navigation purposes. Quite often, the inattention results in the total closure of the inlet. Therefore, at almost all harbor entrances and controlled tidal inlets, the natural bypassing must be augmented by secondary, usually mechanical, means. The customary technique for bypassing sand and maintaining harbors and inlets is the use of floating dredge equipment. This equipment is rugged, reliable, has been proved over and over, and appears to be irreplacable for many applications and locations. However, there are many locations and situations for which this floating equipment is not suitable and may, in fact, be detrimental or prohibitively costly. Waves of even moderate height, moderateto- high tidal excursion and currents, draft limitations, limited maneuvering area, and interference with normal navigation operations are examples of conditions which decrease the desirability and application of floating dredge equipment. Small volumes of material to be bypassed are an economic liability for the floating plant since mobilization and demobilization costs contribute extraordinarily to the unit cost for bypassing work.

scholarly journals How important risk analysis of plastic pollution in coastal area? Case study in Masohi, Central Maluku

2020 ◽  
Vol 200 ◽  
pp. 02014
Author(s):  
Bachtiar W Mutaqin ◽  
Muh Aris Marfai ◽  
Muhammad Helmi ◽  
Nurhadi Nurhadi ◽  
Muhammad Rizali Umarella ◽  
...  
Keyword(s):  
Public Awareness ◽  
Coastal Areas ◽  
Plastic Waste ◽  
Small Island ◽  
Marine Biota ◽  
Plastic Pollution ◽  
Short Period ◽  
Almost All ◽  
And Function ◽  
Interdisciplinary Study

Human pressure on the coastal and aquatic surrounding ecosystem in Indonesia, through plastic waste, is increasing, considering that 60 % of the approximately 250 million people live in the coastal areas. Plastic waste originating from human activities has become a massive problem in almost all the small island and coastal regions, especially in the eastern part of Indonesia. This condition is caused by poor waste management and a lack of public awareness in disposing of waste in its place, including in an area known as its marine biodiversities and marine tourism spots like Masohi in Central Maluku. Also, the composition of waste is dominated by plastic waste that cannot be decomposed in a short period, continue circulated on the ocean currents, and will be deposited in coastal areas. Furthermore, some plastic waste will break down into micro-plastics that pollute not only the environment but also marine biota, which are often consumed by humans. This situation profoundly affects the sustainability and function of aquaecosystem services in coastal areas. Therefore, a comprehensive policy and regulation, and interdisciplinary study for analysing vulnerable coastal ecosystem, and mitigating the potential risk of plastic pollution in Masohi, Central Maluku are essential to be conducted.

scholarly journals Competetiveness of the Montenegrin fruit and vegetables sector and recommendtations for impovement

2012 ◽  
Vol 6 (1-2) ◽  
pp. 69-75
Author(s):  
Radislav Jovovic
Keyword(s):  
Unit Cost ◽  
Market Potential ◽  
Price Ratio ◽  
Market Competitiveness ◽  
Market Shares ◽  
Input Use ◽  
Local Supply ◽  
Market Opportunities ◽  
State Of Affairs ◽  
Almost All

A number of facts, primarily including high fragmentation at all levels, weak vertical integration, limited dimensions in comparison to competitors poor technological level and unbalanced quality/price ratio make the sector weak, low competitive and exposed to international competition, reducing its capacity to capture any existing market potential. Almost all opportunities are frozen by prevailing weaknesses and threat impacts are exacerbated by a largely prevailing number of weaknesses. High production unit cost appears to be a major constraint to local supply market competitiveness. This situation appears to be mainly caused by general low levels of productivity – provoked by not adequate and up-to-date cultivation practices, reduced levels of input use, utilisation of old and, therefore, less performing varieties, and also farm management shortcomings. High losses from reduced availability of post-harvest facilities and equipment add up to the problem. The improvement of the sector is not easy. In other words, there is a lot to do for the Montenegrin sector operators to increase sales: tackle imports and increase market shares in the domestic market and abroad. Based on our research, we suggest that the Montenegrin fruit and vegetable sector should primarily aim at substituting imports, increasing domestic consumption and developing exports to the region (CEFTA countries) primarily via promising market opportunities. Based on our analyses of the state of affairs of the sector, the competitiveness and the market potentials, the recommendations for improvement competitiveness are outlined.

scholarly journals An integrated AHP and PROMETHEE approach to the evaluation of the attractiveness of European maritime areas for sailing tourism

2018 ◽  
Vol 26 (2) ◽  
pp. 135-148 ◽  
Author(s):  
Leszek Butowski
Keyword(s):  
Analytical Hierarchy Process ◽  
Coastal Areas ◽  
Scientific Investigation ◽  
Preference Ranking ◽  
Bottom Level ◽  
Tourist Destinations ◽  
Promethee Method ◽  
Almost All ◽  
Hierarchy Process

Abstract As a subject of scientific investigation, evaluations of the attractiveness of tourist destinations have had a relatively long history, particularly among geographers and regional economists. Based on mathematical and psychological principles and using methods that combine the Analytical Hierarchy Process (AHP) and the Preference Ranking Organization Method for Enrichment Evaluation (PROMETHEE) approach, this research project constructs an evaluation structure used for the assessment of European coastal and offshore areas for sailing tourism. A case study with a three-level evaluation structure has been defined and tested. It contains: at the top of the hierarchy an overall objective defined as the attractiveness of the European coastal and offshore areas for sailing tourism; six criteria of evaluation (on the second level); and ten coastal areas (at the bottom level). This structure covers almost all the coasts around Europe, as they were the subjects of evaluation and comparison. The evaluation was carried out by a group of experts who made the assessment taking into account previously determined criteria with weights. The findings indicate that the AHP-PROMETHEE method may be a useful tool to evaluate the attractiveness of different destinations. It can be also used for practical purposes, particularly to determine strengths and weaknesses, as well as the competitive position, of given coastal areas in relation to others.

scholarly journals Use Of E-Learning To The Effectiveness Of Students In Coronavirus Pandemic

2021 ◽  
Vol 4 (3) ◽  
pp. 438-449
Author(s):  
Fachroh Fiddin ◽  
Bustami Bustami
Keyword(s):  
Quality Of Service ◽  
Student Learning ◽  
Urban Areas ◽  
Coastal Areas ◽  
The State ◽  
E Learning ◽  
Almost All ◽  
Track Analysis ◽  
Accounting Student

Abstract. This research aims to determine the effectiveness of student learning in the coastal areas of the island of Sumatra at the time of the Covid-19 virus pandemic using e-learning. The respondent is an accounting student at the state Polytechnic in Bengkalis where almost all students live in the coastal areas of the island and differ from those in urban areas. The variables examined the perception of benefits, perception of ease, and quality of service towards the use of e-learning and the effectiveness of student learning. The results showed a perception of benefits and quality of service impacting the use of e-learning and the effectiveness of student learning. While the perception of simplicity does not affect the use of e-learning and the effectiveness of student learning. The results of research using track analysis show that variable perception of benefits and quality of service affects the effectiveness of learning through the use of e-learning as a mediation variable. While the variable perception of ease has no influence on the effectiveness of student learning through the use of e-learning as a mediation variable.

The Diversity and Distribution of Mosses in Gujarat: Current Status

2016 ◽  
Vol 1 (2) ◽  
Author(s):  
D. G. Shah ◽  
R. V. Gujar ◽  
A. P. Singh
Keyword(s):  
Deciduous Forest ◽  
Common Species ◽  
Coastal Areas ◽  
The State ◽  
The Other ◽  
Current Status ◽  
Intensive Study ◽  
Almost All ◽  
First Time

Gujarat harbors a large diversity of habitats ranging from deserts to moist deciduous forest to grasslands and coastal areas which provide a variety of microhabitats necessary for colonisation by bryophytes. An earlier study reported 44 species of mosses in Gujarat. 75% of the districts however remained unsurveyed. Hence, to understand the diversity of bryophytes in the state and its distribution, an intensive study was carried from November 2013 to February 2015. The present study reports the presence of 24 species of mosses which belong to 12 genera falling under 7 families. Pottiaceae, Bryaceae, Plagiothiaceae and Fissidentaceae are the dominant moss families of Gujarat while Bryum, Stereophyllum and Hyophila are the dominant moss genera with four species each. Gymnostomiella. vernicosa (Hook.) Fleish. and Hyophila. involuta (Hook.) Jaeg. were the most common and found in almost all the districts of Gujarat. The other common species included Hydrogonium consanguineum (Thw. et Mitt.), Barbula indica (Hook.) Spreng., Bryum coronatum Schwaegr, Bryum capillare L. ex Hedw. Brachyemenium turgidium Broth. ex Dix., Fissidens curvatoinvolutus Dixon. and Barbula indica (Hook.) Spreng . Physcomitrium eurystomum Sendth. and Hyophila spathulata (Harv.) Jaeg. are being reported for the first time from the state. Moss records are being reported for the first time for more than 20 districts of the state. Dangs district has the highest diversity followed by Junagadh, Panchmahal and Valsad districts

scholarly journals Health City Collaboration Model Through the Program No Gross City (Kotaku) in Coastal Areas Makassar City, Indonesia

2019 ◽  
Vol 9 (1) ◽  
pp. 1789-1791
Keyword(s):  
Open Space ◽  
Stable State ◽  
Secondary Data ◽  
Coastal Areas ◽  
Primary Data ◽  
Test Technique ◽  
Large Cities ◽  
Collaboration Model ◽  
Quantitative Descriptive ◽  
Almost All

Slums are a problem faced by almost all major cities in Indonesia and even large cities in other developing countries. The study of slum settlements (slum) generally covers three aspects, first the physical condition, the other socio-economic conditions of the community living in the agreement, and the three impacts by the two states. These physical conditions, among others, can be seen from the very stable state of the building with low-quality construction, non-patterned, and non-hardened road network, public sanitation, and non-functioning drainage, and waste that has not been adequately managed. (1) (2) The study aimed to form a collaboration model for Healthy Cities through a Program of No Slum Cities in the Coastal Area of Makassar City. Method This study uses a quantitative descriptive research method as an approach to Secondary Data Analysis (ADS). ADS is a method using secondary data as the primary data source. Utilizing the secondary data in question is to use a statistical test technique that is appropriate for obtaining the desired information from a mature body of material derived from certain agencies or institutions (such as PUPR, departments, or educational institutions) to be systematically and objectively processed. Observations found that the tendency towards collaboration with various sectors to reduce the number of slums in settlements. As for the indicators used, there are 7 + 1 from the City program without slums. The conclusions of the study were to reduce the number of slums in Makassar, especially in the coastal areas of Makassar City with an approach, namely by improving housing, environmental roads, drainage, garbage, fire fighting, and green open space by involving various sectors.

scholarly journals Proses Padu Serasi Dalam Pengembangan Kawasan Pesisir Kota Semarang

2019 ◽  
Vol 16 (2) ◽  
pp. 238
Author(s):  
Mohammad Agung Ridlo ◽  
Eppy Yuliani
Keyword(s):  
Public Space ◽  
Coastal Area ◽  
Free Space ◽  
Spatial Planning ◽  
Open Space ◽  
Coastal Areas ◽  
Coastal Resources ◽  
Public Open Space ◽  
Almost All ◽  
The City

ABSTRACTIn almost all regions of the Coastal Indonesia conflicts often occur with various interests. The main cause of this problem (conflict) is spatial planning that does not / does not pay attention to Coastal Resources in the region. This happens one of them as information that needs to be used. Various parties have an interest in their own goals, objectives and plans for exploiting the Coastal Resources. Likewise, the City of Semarang, in developing Coastal / Coastal areas, should ask permission from the holder of a fixed land right or at least leave a small amount of space from the front area of Semarang City as a public open space. Semarang City is a city that is very poor in public space. In the management of the Coastal area it is necessary to have direction in this Coastal area as a public space, not a free trade process with profit-oriented goals. But still giving access to the free space of the beach that can be entered by permitted. Free space can be realized by giving a certain free distance from the coastline. Therefore, the combination of spatial plans and zoning plans is needed. In the process of regional spatial planning (RTRW) and zoning plans (RZ) of Coastal areas, it is necessary to make a harmonious process.Key Words: Mix and Match, Development, Coastal Areas ABSTRAKKawasan pesisir menjadi kawasan yang mengalami berbagai permasalahan dari berbagai sudut kepentingan. Penataan ruang pada kawasan pesisir yang belum dapat selaras dengan  potensi sumberdaya pesisir, menjadi salah satu alasan dari munculnya berbagai permasalahan yang ada. Tidak satupadunya tujuan, target dan rencana dalam pengelolaan sumberdaya pesisir membuat penataan kawasan pesisir kurang menyatu. Demikian pula halnya dengan Kota Semarang,  dalam mengembangkan kawasan pesisir/pantai semestinya berwenang mengingatkan para pemegang izin/hak guna lahan untuk tetap menjadikan atau minimal menyisakan sedikit ruang dari kawasan terdepan (muka) Kota Semarang ini sebagai ruang terbuka publik. Kota Semarang merupakan kota yang sangat miskin akan ruang publik. Dalam pengelolaan kawasan pesisir perlu adanya pengarahan bahwa kawasan pesisir ini sebagai ruang publik, tidak sekedar suatu proses dagang semata dengan tujuan profit oriented. Namun tetap memberikan akses ke ruang bebas dari pantai yang dapat dimasuki oleh siapapun. Ruang bebas dapat diwujudkan dengan memberikan jarak bebas tertentu dari garis pantai. Oleh karenanya, maka perpaduan rencana tata ruang darat dan rencana zonasi pesisir sangat diperlukan. Dalam proses penyusunan rencana tata ruang wilayah (RTRW) dan rencana zonasi (RZ) wilayah pesisir, perlu dilakukan proses padu serasi.Kata Kunci: Padu Serasi, Pengembangan, Kawasan Pesisir

Habitat Association of Klebsiella Species

1985 ◽  
Vol 6 (2) ◽  
pp. 52-58 ◽  
Author(s):  
Susan T. Bagley
Keyword(s):  
Drinking Water ◽  
Gastrointestinal Tract ◽  
Surface Waters ◽  
Industrial Effluents ◽  
Opportunistic Pathogen ◽  
Habitat Associations ◽  
Habitat Association ◽  
Klebsiella Species ◽  
Almost All ◽  
Polluted Waters

AbstractThe genus Klebsiella is seemingly ubiquitous in terms of its habitat associations. Klebsiella is a common opportunistic pathogen for humans and other animals, as well as being resident or transient flora (particularly in the gastrointestinal tract). Other habitats include sewage, drinking water, soils, surface waters, industrial effluents, and vegetation. Until recently, almost all these Klebsiella have been identified as one species, ie, K. pneumoniae. However, phenotypic and genotypic studies have shown that “K. pneumoniae” actually consists of at least four species, all with distinct characteristics and habitats. General habitat associations of Klebsiella species are as follows: K. pneumoniae—humans, animals, sewage, and polluted waters and soils; K. oxytoca—frequent association with most habitats; K. terrigena— unpolluted surface waters and soils, drinking water, and vegetation; K. planticola—sewage, polluted surface waters, soils, and vegetation; and K. ozaenae/K. rhinoscleromatis—infrequently detected (primarily with humans).

SEM Cold Stage Techniques for the Observation of Vegetative and Floral Apices of Oat (Avena sativa L.) Plants

1977 ◽  
Vol 35 ◽  
pp. 590-591
Author(s):  
B. K. Kirchoff ◽  
L.F. Allard ◽  
W.C. Bigelow
Keyword(s):  
Critical Point ◽  
Avena Sativa ◽  
Substantial Improvement ◽  
Fresh Tissue ◽  
Cold Stage ◽  
Critical Point Drying ◽  
Almost All ◽  
Cell Collapse ◽  
Conductive Paint ◽  
Carbon Based

In attempting to use the SEM to investigate the transition from the vegetative to the floral state in oat (Avena sativa L.) it was discovered that the procedures of fixation and critical point drying (CPD), and fresh tissue examination of the specimens gave unsatisfactory results. In most cases, by using these techniques, cells of the tissue were collapsed or otherwise visibly distorted. Figure 1 shows the results of fixation with 4.5% formaldehyde-gluteraldehyde followed by CPD. Almost all cellular detail has been obscured by the resulting shrinkage distortions. The larger cracks seen on the left of the picture may be due to dissection damage, rather than CPD. The results of observation of fresh tissue are seen in Fig. 2. Although there is a substantial improvement over CPD, some cell collapse still occurs.Due to these difficulties, it was decided to experiment with cold stage techniques. The specimens to be observed were dissected out and attached to the sample stub using a carbon based conductive paint in acetone.

Electron microscopy studies of plasma-sprayed materials

1983 ◽  
Vol 41 ◽  
pp. 70-71
Author(s):  
K.R. Subramanian ◽  
A.H. King ◽  
H. Herman
Keyword(s):  
Plasma Spraying ◽  
Substrate Surface ◽  
Flame Temperature ◽  
Ceramic Coatings ◽  
Metallic Substrates ◽  
Hot Plasma ◽  
Almost All ◽  
Plasma Sprayed ◽  
Hostile Environments ◽  
Plasma Spraying Process

Plasma spraying is a technique which is used to apply coatings to metallic substrates for a variety of purposes, including hardfacing, corrosion resistance and thermal barrier applications. Almost all of the applications of this somewhat esoteric fabrication technique involve materials in hostile environments and the integrity of the coatings is of paramount importance: the effects of process variables on such properties as adhesive strength, cohesive strength and hardness of the substrate/coating system, however, are poorly understood.Briefly, the plasma spraying process involves forming a hot plasma jet with a maximum flame temperature of approximately 20,000K and a gas velocity of about 40m/s. Into this jet the coating material is injected, in powder form, so it is heated and projected at the substrate surface. Relatively thick metallic or ceramic coatings may be speedily built up using this technique.

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