scholarly journals Study the effect of low pH on Ruditapes decussatus (Mollusca: Bivalvia)

2021 ◽  
Author(s):  
Anam Tsear
Keyword(s):  
Economic Value ◽  
Ammonia Excretion ◽  
Condition Index ◽  
Sandy Beaches ◽  
Ruditapes Decussatus ◽  
Average Value ◽  
Mediterranean Lagoons ◽  
Small Decline ◽  
Algal Feed ◽  
Response Testing

The grooved carpet shell clam (Ruditapes decussatus) is one of the most economically essential mollusks in Mediterranean lagoons and sandy beaches, with fisheries and aquaculture both contributing to its abundance. The goal of this research is to see how varying amounts of acidity affect this calcifying organism. 420 ppm (ambient control), 550 ppm, 750 ppm, and 1050 ppm were used to incubate juvenile clams in CO2  enriched saltwater. With increasing pCO2 , the biological parameters evaluated revealed a small decline. Differences, however, were not substantial. In terms of overall weight, the reduction was greatest at 550 and 1050 ppm. Furthermore, clams kept at 550 parts per million had the lowest condition index and the greatest mortality rate of 8%. Both the 550 ppm and the control 420 ppm groups demonstrated an increase in metabolic rate and ammonia excretion in the physiological response testing. With increasing acidification, the algal feed clearance rate declined, with the highest average value in the control (420 ppm) group and the lowest average value in the extremely high pCO2 (1050 ppm) group. Ocean acidification may put further strain on R. decussatus' health and economic value by the end of the century

Economic Value of Pavement for the Elderly: Case Study of Bangkok, Thailand

2018 ◽  
Vol 9 (11) ◽  
pp. 927-937
Author(s):  
Somskaow Bejranonda ◽  
◽  
Aekkapat Laksanacom ◽  
Waranan Tantiwat ◽  
◽  
...  
Keyword(s):  
Contingent Valuation Method ◽  
Economic Value ◽  
The Elderly ◽  
Pavement Management ◽  
Sustainable Urban Development ◽  
Public Facility ◽  
Average Value ◽  
Valuation Method ◽  
The People ◽  
The City

Based on the concept of a livable and global age-friendly city, pavements are a public facility that the city should provide to the people. Appropriate pavements will be beneficial for the people, particularly for good quality of life for the elderly to move around in the city. This study explored the behaviour of the elderly in the use of pavements and the problems confronted. The study also evaluated the value of the pavement walking area as it reflected the benefits of pavements to the elderly by applying the Contingent Valuation Method (CVM). During March-May 2017, data were collected using interviews with 601 elderly living in Bangkok. The study indicated that the main problem for senior citizens regarding their use of pavements was from being disturbed by motorbikes riding on the pavements. The average value of pavement for the elderly was about THB 160 (USD 5.30) per person per year. Thus, the benefits of pavements to the elderly in Bangkok was approximately THB 158 million (USD 5.2 million) per year. Thus, policy makers should make proper budget allocations for elderly-friendly pavement management and seriously address the problems confronting the elderly in using pavements, to maximize the usefulness of pavements not only for the elderly but also for the public and to support a sustainable urban development.

Indeks Kondisi Kerang Bambu yang Didaratkan Di TPI Tasik Agung, Rembang, Jawa Tengah

2021 ◽  
Vol 10 (2) ◽  
pp. 200-204
Author(s):  
Aulia Dessy Ramadhani ◽  
Sri Redjeki ◽  
Jusup Suprijanto
Keyword(s):  
Economic Value ◽  
Condition Index ◽  
Total Weight ◽  
Size Selectivity ◽  
Weight Relationship ◽  
Central Java ◽  
Lack Of Information ◽  
Length Width ◽  
Increasing Demand ◽  
Index Value

Kerang bambu merupakan  salah  satu  jenis  Moluska  dari  famili  Solenidae  yang mempunyai nilai ekonomis. Potensi sumberdaya hayati kerang bambu ini menarik untuk diteliti lebih dalam mengingat permintaannya yang semakin meningkat. Upaya pengambilan kerang bambu jika tidak diimbangi dengan selektivitas ukuran dan dilakukan penangkapan secara terus-menerus maka dapat mengakibatkan hilangnya organisme ini. Mengingat masih minimnya informasi mengenai kerang bambu (Solen sp.) sehingga perlu dilakukan penelitian mengenai morfometri, hubungan panjang dan berat serta indeks kondisi kerang bambu. Tujuan dari penelitian ini adalah mengetahui hubungan panjang cangkang dan berat total serta nilai indeks kondisi dari kerang bambu (Solen sp.). Penelitian ini dilakukan dengan mengukur aspek morfometri seperti panjang, lebar dan berat total. Hasil penelitian menunjukkan hubungan antara panjang cangkang dan berat total memiliki nilai b = 3,99 dan R2=0.5742. Nilai indeks kondisi kerang bambu (Solen sp.) dari TPI Tasik Agung, Rembang, Jawa Tengah pada kategori kurus sebesar 1.9% dengan jumlah 1 ekor, kategori sedang sebesar 13,3% dengan jumlah 67 ekor dan kategori gemuk sebesar 86.4% dengan jumlah 433 ekor.Bamboo clams are type of mollusc from the Solenidae family that have economic value. The potential of bamboo clam is interesting to be investigated more deeply considering its increasing demand. Efforts to collect bamboo clams of it’s not balanced with size selectivity and continuous fishing can result in the loss of these organisms. Given the lack of information on bamboo clams (Solen sp.) it is necessary to conduct research on morphometry, length and weight relationship and condition index of bamboo clams. The purpose of this study was to determine condition index value of bamboo clams (Solen sp.). This research was conducted by measuring morphometric aspects such as length, width, and total weight. The result showed that the condition index value of bamboo clams (Solen sp.) in TPI Tasik Agung, R, Central Java in the thin category was 1.9% with 1 individuals, the moderate category was 13.3% with 67 individuals and the fat category was 86.4% with 433 individuals.

scholarly journals Quantitative Ethobotany of Gnetum africanum Welw. (Gnetaceae) in Massoumboum, Littoral Region of Cameroon

2019 ◽  
Vol 8 (2) ◽  
pp. 19
Author(s):  
Jean Lagarde Betti ◽  
Pascal Eric Billong Fils ◽  
Prisca Toffon ◽  
Eric Wété ◽  
Jules Romain Ngueguim ◽  
...  
Keyword(s):  
Economic Value ◽  
Sampling Rate ◽  
Quantitative Ethnobotany ◽  
Distribution Area ◽  
Ethnobotanical Survey ◽  
Average Value ◽  
Forest Inventories ◽  
Littoral Region ◽  
The City ◽  
Cfa Franc

Gnetum africanum Welw. is a plant specie of Central and West Africa, a Non Timber Forest Product (NTFP) with high nutritional, medicinal and economic value. In Cameroon, its leaves are recognized by the forestry administration as a special product. Strong demand combined with destructive harvesting techniques has resulted in its rarity in its distribution area. The objective of this work is to characterize the harvesting and trade of G. africanaum, and to assess its abundance (density and structure) in order to appreciate the economic value of the Lehman agroforest system (ALM) based in Massoumboum, a village located at 30 Km of Douala town, the economical capital of Cameroon. An ethnobotanical survey was conducted among harvesters and sellers of G. africanum in the ALM and in adjacent markets. An inventory of G. africanum stems and leaves was carried out at an overall sampling rate of 9.52%. The study revealed that, harvesting of G. africanum is freely done by women, youngers and elders. They start their activity early in the morning and convey their products to markets located in the periphery and inside the city of Douala. The price of the gramme is too high in the periphery than in the city, averaging 0.58 CFA franc. This price is high in the dry season due to the scarcity of other agricultural vegetables. The inventories conducted revealed densities of 6 191 stems/ha and 119 548 leaves/ha, with the high density of leaves obtained in less perturbed plots. The combination of field data (forest inventories) with those obtained in the markets (trade data), what we call « quantitative ethnobotany », allowed us to appreciate the temporal economic value (EV) of the ALM. This EV ranges from 500 000 - 700 000 CFA franc, for an average value of 37 059.9 CFA franc /ha. If well managed, G. africanum can contribute not only to the economy of the women-harvesters, but also to the economy of the ALM. The glaring development challenge of the background of what precedes is the development of non-detriment findings (NDF) for G. africanum in Cameroon. These consist of setting tools which aims to sustain the resource and trade such as the delimitation of Gnetum Allocation Units (GAU), as well as the development and implementation of simple management plans (SMPs).

Value-based estimate of market size and opportunity for economic benefit through innovative pancreatic cancer (PC) therapies.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. e16790-e16790
Author(s):  
Vincent J. Picozzi ◽  
Victoria G. Manax ◽  
Semmie Kim ◽  
Zachary Wintrob ◽  
Margaret T. Mandelson ◽  
...  
Keyword(s):  
Economic Benefit ◽  
Economic Value ◽  
Cost Of Care ◽  
List Price ◽  
Total Cost ◽  
Average Value ◽  
Incidence Data ◽  
Treatment Prevalence ◽  
Life Years ◽  
Commercial Opportunity

e16790 Background: Over the past 20 years, cancer drugs have contributed to increased life expectancy, reduced mortality, decreased hospitalization and decreased use of medical services. The economic value of these improvements is about as large as the value of the increase in the US gross domestic product during that time period. Recently, a health economic study presented at ASCO GI 2020 cited that every $1 (adjusted for inflation) spent on innovative PC treatments reduced non-drug expenditures by $9, thereby lowering the total cost of care for PC patients. Accordingly, the commercial opportunity of a new therapy should be measured by some combination of the clinical, economic and social value generated. We demonstrate the value of a novel PC drug from this perspective. Methods: Analysis of SEER survival and incidence data between 2008 and 2016 shows the introduction of new medicines for PC of all stages was associated with a cumulative increase of 26,456 life years, or 2.52 life years per patient. It was also associated with quality of life improvements, measured by a decline in hospitalizations rates and emergency room visits that can also lead to more days at work, at school and with family. Several studies have suggested the average value of an additional year of life, for the age of a typical patient diagnosed with PC, is at least $250,000. Using this figure, the value of 26,456 life years gained from 2008-2016 is $6.61 billion (26,456*$250,000) to patients, the healthcare system and society, as a result of advancing medical innovation for patients with PC. Results: The median annual list price of a life-enhancing cancer therapy is $150,000 per patient. Using the NCI treatment prevalence estimator (holding incidence constant), we estimate that between 2020-2025, there will be an additional 10,728 advanced PC patients requiring treatment who could benefit from innovative drugs. The total cost of these drugs for these patients would be $1.61 billion. However, the economic value of the life years saved would be $6.76 billion (10,728*2.52 life years*$250,000 = $6.76 billion). A review of cancer medicine payor coverage suggests a new PC therapy that produces such value would be able to obtain coverage from US payors given this value-based price. Conclusions: A value-based approach to estimating the opportunity for clinical and economic benefit reveals significant potential for new PC medicines.

Reproductive pattern of the clams, Ruditapes decussatus and R. philippinarum on intertidal flats in Brittany

1994 ◽  
Vol 74 (2) ◽  
pp. 351-366 ◽  
Author(s):  
F. Laruelle ◽  
J. Guillou ◽  
Y.M. Paulet
Keyword(s):  
Environmental Conditions ◽  
Seasonal Variations ◽  
Reproductive Activity ◽  
Condition Index ◽  
Ruditapes Philippinarum ◽  
Breeding Period ◽  
Reproductive Pattern ◽  
Ruditapes Decussatus ◽  
Oocyte Size ◽  
Maturation Stages

Since the introduction of the Manila clam Ruditapes philippinarum (Mollusca: Bivalvia) to aquaculture clam beds, this species has spread to several sites. As a result, an extensive fishery has developed around this species. Its reproductive cycle and that of a native clam species, Ruditapes decussatus (Mollusca: Bivalvia) from two Brittany sites are examined here and the seasonal variations in the condition index, the scale of maturation stages, the histology and the oocyte size-frequencies of both species are compared. The differences observed between the species and between sites were attributed to environmental conditions. Ruditapes philippinarum showed a more extended breeding period and a greater number of spawning events than R. decussatus. In the Morbihan Gulf, the reproductive activity of R. philippinarum appeared particularly great in terms of number of spawning events, and speed of maturation. For both species, synchronism was more apparent during the first maturation, while spawning, and particularly partial spawning, tended to decrease the level of synchronization.

Der volkswirtschaftliche Verlust durch Stromausfälle: Eine empirische Analyse für Haushalte, Unternehmen und den öffentlichen Sektor

2012 ◽  
Vol 13 (4) ◽  
pp. 308-336 ◽  
Author(s):  
Michael Schmidthaler ◽  
Johannes Reichl ◽  
Friedrich Schneider
Keyword(s):  
Economic Value ◽  
Cost Benefit ◽  
Time Of Day ◽  
Electricity Supply ◽  
Analysis Tool ◽  
Power Outages ◽  
Power Outage ◽  
Average Value ◽  
Precise Knowledge ◽  
Future Challenges

AbstractThis work discusses different methodological approaches for the economic evaluation of electricity supply security, quantifies the expected economic costs of power outages in Austria, and provides an interpretation of the results regarding the future challenges of sustaining the currently high levels of electricity supply security. By applying a macroeconomic simulation tool, which assesses the damages of power outages which can be defined for the period between one to 48 hours taking into account the day of the week and time of day, the value of supply security can be estimated precisely with high spatial and sectoral resolution. This is demonstrated exemplarily for a power outage scenario which is similar in scope, timing and duration to a historic even in Italy in 2003 affecting over 50 million people. Decision-makers in politics and businesses can use the analysis tool APOSTEL to conduct precise evaluations of the value of supply security, for cost-benefit analyses of supply security enhancing investments, of regulatory descions which affect the level of supply securty and for many more applications with regards to energy policy. Precise knowledge of the social and economic value of a secure supply of electricity becomes even more crucial considering that the average value of lost load for a one-hour power cut in Austria on a weekday morning in the summer is calculated at 17.1 € per kWh of electricity not supplied.

scholarly journals BIOMASSA SESAAT SUMBER DAYA PERIKANAN UNDUR-UNDUR LAUT (CRUSTACEA: DECAPODA: HIPPIDAE) DI PANTAI BERPASIR CILACAP DAN KEBUMEN, JAWA TENGAH

2016 ◽  
Vol 7 (2) ◽  
pp. 211
Author(s):  
Ali Mahsar ◽  
Yusli Wardiatno
Keyword(s):  
Sandy Beach ◽  
Economic Value ◽  
Research Area ◽  
Sandy Beaches ◽  
Intertidal Area ◽  
Standing Biomass ◽  
Specimen Collection ◽  
The Difference ◽  
Consumption Demand

<p><strong>ABSTRACT</strong></p><p>Mole crab is a benthic animal that live buried in sandy beach in the intertidal area. Mole crab has  an  important  ecological  role  and  also  has  economic  value.  The  sandy  beach  in  south  of Cilacap  and  Kebumen  is  mole  crab’s  habitat.  Mole  crab  exploitation  in  these  areas  has  been increasing  for  consumption  demand.  To  determine  the  significant  role  of  the  mole  crab  in  the provision  of  nutritious  food,  it  is  necessary  to  estimate  the  potential  of  mole  crab  biomass.  This study  aims  to  determine  standing  biomass  of  the  mole  crab  in  Kebumen  and  Cilacap  sandy beaches.  The  specimen  collection  was  conducted  by  sampling  methods  every  month  in  March 2012 to February 2013 on Bocor beach, Kebumen and June 2013 to May 2014 on Bunton beach, Cilacap. The data processing was conducted by descriptive statistics methods. The results showed that standing biomass of mole crab family Hippidae, namely Emerita emeritus and Hippa adactyla, fluctuated between 102 and 508 kg on the Kebumen sandy beach, and between 1,811 and 4,671 kg on the Cilacap sandy beach. Standing biomass of E. emeritus fluctuated between 82 and 497 kg on  the  Kebumen  sandy  beach  and  between  1,462  and  3,560  kg  on  the  Cilacap  sandy  beach.Standing biomass of H. adactyla fluctuated between 2 and 133 kg on the Kebumen sandy beach, and between 234 and 1,701 kg on the Cilacap sandy beach. The difference in standing biomass in each  location  was  caused  by  the  difference  of  sampling  time  and  environment  condition  of research area. The economic value potential of the mole crab as fishery resources is discussed.</p><p>Keywords: Emerita emeritus, Hippa adactyla, Hippidae, momentarily biomass,</p><p><strong><br />ABSTRAK</strong></p><p>Undur-undur laut adalah kelompok hewan bentik yang hidup  mengubur di daerah intertidal bersusbtrat pasir. Undur-undur laut mempunyai peran ekologis penting dan juga bernilai ekonomis. Pantai  berpasir  selatan  Cilacap  dan  Kebumen  adalah  habitat  undur-undur  laut.  Penangkapan undur-undur  laut  di  kedua  wilayah  tersebut  makin  meningkat  untuk  kebutuhan  konsumsi.  Untuk mengetahui  peran  undur-undur  laut  dalam  mendukung  penyediaan  bahan  pangan  bergizi,  perlu diketahui potensi biomassa undur-undur laut. Penelitian ini bertujuan untuk mengetahui biomassa sesaat  undur-undur  laut  dan  fluktuasinya  di  pantai  berpasir  Kabupaten  Kebumen  dan  Cilacap. Pengumpulan  spesimen  undur-undur  laut  dilakukan  dengan  metode  sampling  setiap  bulan  pada Maret 2012 hingga Februari 2013 di pantai Bocor Kebumen dan pada Juni 2013 hingga Mei 2014 di  pantai  Bunton  Cilacap.  Pengolahan  data  dilakukan  dengan  metode  statistik  deskriptif.  Hasil penelitian  menunjukkan  bahwa  besaran  biomassa  sesaat  (standing  biomass)  undur-undur  laut famili Hippidae, yaitu  Emerita emeritus  dan  Hippa adactyla, berfluktuasi  antara 102 kg hingga 508 kg di pantai berpasir Kebumen, dan antara 1.811 kg hingga 4.671 kg di pantai berpasir Cilacap. Standing biomass E. emeritus berfluktuasi antara 82 kg hingga 497 kg di pantai berpasir Kebumen dan  antara  1.462  kg  hingga  3.560  kg  di  pantai  berpasir  Cilacap.  Standing  biomass  H.  adactylaberkisar antara 2 kg hingga 133 kg di pantai berpasir Kebumen, dan antara 234 kg hingga 1.701 kg di  pantai  berpasir  Cilacap.  Perbedaan  besaran  standing  biomass  di  masing-masing  lokasi dipengaruhi  oleh  perbedaan  waktu  pengumpulan  data  undur-undur  laut  dan  perbedaan  kondisi lingkungan  lokasi  penelitian.  Potensi  ekonomi  sebagai  sumber  daya  perikanan  undur -undur  laut juga dibahas dalam paper ini.</p><p>Kata kunci: Emerita emeritus, Hippa adactyla, Hippidae, biomassa sesaat</p>

scholarly journals ANALISIS KINERJA KEUANGAN BERDASARKAN ECONOMIC VALUE ADDED (EVA) DAN FINANCIAL VALUE ADDED (FVA) (STUDI KASUS PADA PT. NIPPON INDOSARI CORPINDO TBK. TAHUN 2014-2018)

2020 ◽  
Vol 7 (2) ◽  
pp. 103
Author(s):  
Nangsi Mohamad ◽  
Lanto Miriatin Amali ◽  
Meriyana Franssisca Dungga
Keyword(s):  
Financial Performance ◽  
Stock Exchange ◽  
Economic Value ◽  
Value Added ◽  
Secondary Data ◽  
Research Data ◽  
State University ◽  
Economic Value Added ◽  
Average Value ◽  
Quantitative Descriptive

Analysis of Financial Performance based on Economic Value Added (EVA) and Financial Value Added (FVA) (Case Study at PT. Nippon Indosari Corpindo Tbk in 2014-2018). Bachelor’s Degree Program in Management, Faculty of Economics, State University of Gorontalo. The principal sepervisior is Lanto Miriatin Amali, S. Sos., M.Si., and the co-supervisor is Meriyana Frsansissca Dungga, SE, MM. The research objective was to find out the financial performance of company based on analysis Economic Value Added (EVA) and Financial Value Added (FVA) from 2014 to 2018 at PT. Nippon Indosari Corpindo Tbk. The research data were obtained through financial statement in Indonesia Stock Exchange in form of company’s annual statement. The research data were secondary data. The research method used quantitative descriptive. The research sample focused on PT. Nippon Indosari Corpindo Tbk at Indonesia Stock Exchange (IDX). The research finding indicated that the result of calculation from economic value added (EVA) and Financial Value Added (FVA) at PT. Nippon Indosari Corindo Tbk listed in Indonesia Stock Exchange (IDX) fluctuated or limit of economic value added and limit of financial value added were dynamic expriencing movement although the condition of value was dynamic (up-down). Yet the average value of both was > 0 (positive) so that it was assumed to have been able to create economic value added and financial value added.

scholarly journals THE ANALYSIS OF ECONOMIC VALUE ON IRRIGATION UTILIZATIONATRICE FARMING IN BUAHDUA DISTRICT, SUMEDANG REGENCY, WEST JAVA

2018 ◽  
Vol 4 (2) ◽  
pp. 89
Author(s):  
Ulfah Suci Amalia ◽  
Ernah Ernah
Keyword(s):  
Descriptive Analysis ◽  
Economic Value ◽  
Simple Random Sampling ◽  
Primary Data ◽  
Rice Farming ◽  
Water Usage ◽  
Average Value ◽  
Value Of Water ◽  
Quantitative Descriptive ◽  
Almost All

Water is a main factor on production input in rice farming. The need for water will increase as time progresses, but the availability of it is increasingly uncertain. One way to overcome the scarcity of water is the efficient using of water by determining the price of irrigation. This study aims to determine the price of water which is probably paid by farmers in rice farming, and to know the constraints faced by them. The research design used is quantitative descriptive. Primary data are obtained from 80 farmers taken by simple random sampling. Data analysis’ used here are analysis of descriptive, analysis of farming, and analysis of Willingness To Pay (WTP). The result of this research shows that the value of water rent in Buahdua Village is Rp. 4,428,031/ha/MT. Interviews show that almost all farmers are willing to pay the price of irrigation. The average value of PAP respondent is Rp. 61,813/ha/MT and the average value of TWTP is Rp. 28,751.891. Many obstacles faced by farmers in the use of irrigation is garbage, difficulty of getting water during the dry season, and damaged irrigation. This condition will affect the increasingly inefficient management of irrigation. Therefore, the economic value of water usage can be used as a reference asafees level by the farmers to reach efficiently.

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