scholarly journals Predicting spawning date of nyale worms (Eunicidae, Polychaeta) in the southern coast of Lombok Island, Indonesia

2019 ◽  
Vol 20 (4) ◽  
pp. 971-977
Author(s):  
IMAM BACHTIAR ◽  
NAILA TASLIMAH BACHTIAR
Keyword(s):  
Traditional Method ◽  
Prediction Method ◽  
Southern Coast ◽  
The Past ◽  
Lunar Calendar ◽  
Invertebrate Reproduction ◽  
Available Information ◽  
International Visitors ◽  
Scientific Prediction ◽  
Lombok Island

Abstract. Bachtiar I, Bachtiar NT. 2019. Predicting spawning date of nyale worms (Eunicidae, Polychaeta) in the southern coast of Lombok Island, Indonesia. Biodiversitas 20: 971-977. Spawning of marine nyale worms has been an important component of Sasak tradition of Bau Nyale (fishing nyale) for centuries and a tourism icon of the District of Lombok Tengah since the 1990s. Nyale is a mixture of epitokies of 3-5 species of Polychaeta worms (mostly Palola spp.) for reproduction. At present, prediction of spawning date of the nyale worms is carried out traditionally that might not satisfy demand of tourism market. The present study is to develop a scientific-based method for predicting date of nyale worms spawning or nyale swarming. Since available data are scarce, development of the method of data collection mainly uses analogy from polychaetes and other invertebrate reproduction patterns and any available information from traditional customs. Three hypotheses were developed to generate prediction for 100 years, from 2000 to 2100, and then these prediction dates were verified using available data before 2018. In the past 9 years, there are two mismatches between scientific and traditional predictions, i.e., 2015 and 2017 spawnings, in favor of the new prediction method. The new scientific prediction method provides more objective and accurate date of nyale worm spawning than the traditional method. The present prediction also shows that split spawning dates, February and March, do not come to pass every year, as traditional nyale fishers generally believe them. It is also found that nyale worms are consistently using international lunar calendar for its spawning date, instead of local and national lunar calendars. This study provided the first scientific nyale swarming prediction in Lombok to complement existing traditional prediction. The prediction is very useful to promote the biggest annual traditional festival in Lombok for international visitors.  

scholarly journals A Review of the Applications and Biodegradation of Polyhy-droxyalkanoates and Poly(lactic acid) and Its Composites

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1544
Author(s):  
Jet Yin Boey ◽  
Lydia Mohamad ◽  
Yong Sen Khok ◽  
Guan Seng Tay ◽  
Siti Baidurah
Keyword(s):  
Food Packaging ◽  
Synthesis Process ◽  
Poly Lactic Acid ◽  
Packaging Materials ◽  
The Past ◽  
Food Packaging Materials ◽  
Potential Alternative ◽  
Negative Impacts ◽  
Available Information ◽  
Potential Food

Overconsumption of plastic goods and improper handling of petroleum-derived plastic waste have brought a plethora of negative impacts to the environment, ecosystem and human health due to its recalcitrance to degradation. These drawbacks become the main driving force behind finding biopolymers with the degradable properties. With the advancement in biopolymer research, polyhydroxyalkanoate (PHA) and poly(lacyic acid) (PLA) and its composites have been alluded to as a potential alternative to replace the petrochemical counterpart. This review highlights the current synthesis process and application of PHAs and PLA and its composites for food packaging materials and coatings. These biopolymers can be further ameliorated to enhance their applicability and are discussed by including the current commercially available packaging products. Factors influencing biodegradation are outlined in the latter part of this review. The main aim of this review article is to organize the scattered available information on various aspects of PHAs and PLA, and its composites for packaging application purposes. It is evident from a literature survey of about 140 recently published papers from the past 15 years that PLA and PHA show excellent physical properties as potential food packaging materials.

The Vyredox and Nitredox Methods of in situ Treatment of Groundwater

1988 ◽  
Vol 20 (3) ◽  
pp. 149-163 ◽  
Author(s):  
Carol Braester ◽  
Rudolf Martinell
Keyword(s):  
Water Treatment ◽  
Surface Water ◽  
Traditional Method ◽  
Treatment Method ◽  
Nitrate Treatment ◽  
The Past ◽  
The World ◽  
Nitrate And Nitrite ◽  
Iron And Manganese

Nearly one fifth of all water used in the world is obtained from groundwater. The protection of water has become a high priority goal. During the last decades pollution of water has become more and more severe. Today groundwater is more and more used in comparison with surface water. Recently we have seen accidents, which can pollute nearly all surface water very quickly. Generally the groundwater is easier to protect, as well as cheaper to purify, and above all it is of better quality than the surface water. During the past two decades, alternatives to the traditional method of treating the water in filters have been developed, that is in situ water treatment i.e. the VYREDOX and NITREDOX methods. The most common problem regarding groundwater is too high content of iron and manganese, which can be reduced with the VYREDOX method. In some areas today there are severe problems with pollution by hydrocarbons and nitrate as well, and with modification of the VYREDOX treatment method it is used for hydrocarbon and nitrate treatment as well. The method to reduce the nitrate and nitrite is known as the NITREDOX method.

scholarly journals Specificity and promiscuity of gonadotropin receptors

Reproduction ◽  
2005 ◽  
Vol 130 (3) ◽  
pp. 275-281 ◽  
Author(s):  
Sabine Costagliola ◽  
Eneko Urizar ◽  
Fernando Mendive ◽  
Gilbert Vassart
Keyword(s):  
Hormone Receptors ◽  
Fsh Receptor ◽  
Ovarian Hyperstimulation ◽  
High Concentration ◽  
Glycoprotein Hormone ◽  
Functional Specificity ◽  
The Past ◽  
Glycoprotein Hormone Receptors ◽  
Naturally Occurring ◽  
Available Information

The dichotomy between hormone recognition by the ectodomain and activation of the G protein by the rhodopsin-like serpentine portion is a well established property of glycoprotein hormone receptors. The specificity barrier avoiding promiscuous activation of the FSH receptor by the high concentration of human chorionic gonadotropin (hCG) prevailing during human pregnancy was thus believed to lie in the ectodomain. In the past two years, mutations responsible for rare spontaneous cases of ovarian hyperstimulation syndromes have partially modified this simple view. Five naturally occurring mutations have been identified which cause an increase in the sensitivity of the FSH receptor to hCG. Surprisingly, these mutations are all located in the serpentine portion of the receptor. In addition to their effect on sensitivity to hCG, they increase sensitivity of the FSH receptor to TSH, and are responsible for activating the receptor constitutively. Together, the available information indicates that the ectodomain and the serpentine domain of the FSH receptor each contribute to the specificity barrier preventing its spurious activation by hCG. While the former is responsible for establishment of binding specificity, the latter introduces a novel notion of functional specificity.Recent data demonstrate that LH and FSH receptors can constitute functional homo- and heterodimers. This suggests the possibility that in cells co-expressing the two receptors, such as granulosa cells, the heterodimers might be endowed with functional characteristics different from those of each homodimer.

Suicide medical malpractice: an educational overview

2015 ◽  
Vol 27 (2) ◽  
pp. 203-206 ◽  
Author(s):  
Leo Sher
Keyword(s):  
Suicide Risk ◽  
Essential Elements ◽  
Treatment Interventions ◽  
Collateral Information ◽  
The Past ◽  
Safety Plan ◽  
The Subject ◽  
Patient Responses ◽  
Available Information ◽  
Careful Documentation

Abstract A malpractice lawsuit is in the legal category of an action in tort, which is a demand for compensation for the damages that have occurred. For a physician to be found liable to a patient for malpractice, four essential elements must be proved to sustain an assertion of malpractice: duty, negligence, harm, and causation. The incidence of malpractice litigation in the field of psychiatry is increasing. The most common malpractice claim related to psychiatric practice is the failure to provide reasonable protection to patients from killing themselves. A psychiatrist should be able to evaluate suicide risk on the basis of all available information, including patient responses to direct and indirect questions, known risk factors, information on how the patient behaved under similar circumstances in the past, and collateral information. Reasonable care necessitates that a patient who is either thought of being or established to be suicidal must be the subject of some precautions. A failure either to soundly assess a patient’s suicide risk or to employ an appropriate safety plan after the suicide potential becomes foreseeable is likely to make a physician liable if the patient is harmed because of a suicide event. It is imperative for a psychiatric office or facility to have a good documentation. Careful documentation of evaluations and treatment interventions with a description of changes related to the patient’s clinical condition indicates clinically and legally appropriate psychiatric care.

scholarly journals A single-station prediction model as a contribution to instantaneous mapping

1994 ◽  
Vol 37 (2) ◽  
Author(s):  
I. Stanislawska
Keyword(s):  
Time Series ◽  
Prediction Model ◽  
Prediction Method ◽  
Physical Processes ◽  
The Past ◽  
Ionospheric Station ◽  
Single Station ◽  
Daily Forecast

The paper presents two opposite approaches for single-station prediction and forecast. Both methods are based on different assumptions of physical processes in the ionosphere and need the different set of incoming data. Different heliogeophysical data, mainly f0F2 parameters from the past were analyzed for f0F2 obtaining for the requested period ahead. In the first method - the autocovariance prediction method - the time series of f0F2 from one station are used for daily forecast at that point. The second method may be used for obtaining f0F2 not only at the particular ionospheric station, but also at any point within the considered area.

scholarly journals An Analysis of The Level of Polite Utterances in Sasak Language: A Case Study in Central Lombok

2021 ◽  
Vol 4 (8) ◽  
pp. 925-930
Author(s):  
Baiq Nurullayali ◽  
Sartika Sartika ◽  
Supriadin Supriadin
Keyword(s):  
Native Speaker ◽  
Lower Class ◽  
Old People ◽  
High Class ◽  
The Past ◽  
Class Level ◽  
Qualitative Descriptive ◽  
Descriptive Method ◽  
Lombok Island

This research aims to identify the way of polite language used by Sasak people in Central Lombok. In this research, qualitative descriptive method was employed in analyzing the data. There were three participants that consist of Sasak native speaker from two villages such as Beraim and Dakung village. The data were collected through three techniques that are, observation, interview and documentation. The Results of this research showed that firstly, Sasak language has three levels of polite utterances used by Sasak people such as most polite (Base Alus Utami), more polite (Base Alus Madya), and polite (Base Sasak Biase). When kingdom was exist, Base Alus Utami only used by Perwangse, who was the king or people with high class level in Lombok Island and marked by Raden/Datu, and Dende at the first name. But, when they interacted with the lower class, they used biase language while the lower class of people must use Base Utami then, Base Alus Madya only used by people with the second level in society Baiq and Lalu at the first name, and Base Sasak Biase used by people with the lower class, called Jajar Karang. Secondly, the next generation in Sasak today do not really cosidere the rules when they using the polite language as people used in the past. It can be seen when they are communicating each other. They cannot able to speak with Base Alus Utami even speak with the older people. Only some of old people are still maintenance this language and teach their children but it is so rarely.

scholarly journals Prediksi Harga Saham Dalam Berinvestasi Pada Perusahaan Manufaktur

2021 ◽  
Vol 9 (2) ◽  
pp. 101-114
Author(s):  
Fauziyah Fauziyah
Keyword(s):  
Stock Prices ◽  
Stock Price ◽  
Manufacturing Industry ◽  
Stock Exchange ◽  
Manufacturing Sector ◽  
Prediction Method ◽  
Manufacturing Companies ◽  
Upward Trend ◽  
Stock Trading ◽  
The Past

Abstract Indonesia Stock Exchange (IDX) is a term that is well known in the world of stocks in Indonesia. One of the company sectors listed on the IDX is manufacturing. The contribution of the manufacturing sector to Gross Domestic Product (GDP) was recorded to be the largest compared to other sectors. In this research, the manufacturing companies that will be used as the object of research to predict their stock prices are manufacturing companies listed in LQ45. In stock trading, prices fluctuate up or down. Stock conditions that fluctuate every day make investors who are going to invest in the Manufacturing industry must observe and study the past company data before investing. This data is important for investors to find out what might happen to a company's stock price. Thus, predicting stock prices in the manufacturing industry for the future is needed as a stage in deciding which manufacturing companies are good to investing in. The prediction method in this research uses ARIMA. The results obtained are the stock prices of companies GGRM, HMSP, ICBP, INDF, INTP and UNVR following a downward trend, so that the actions taken by investor in these companies are selling stocks, while for the stock prices of companies ASII, CPIN, INKP, JPFA, SMGR, TKIM, following an upward trend, so that the actions taken by investors in these companies are buying stocks.Keywords: Prediction, ARIMA, Investment  BEI merupakan istilah yang terkenal pada dunia saham di Indonesia. Sektor perusahaan yang terdapat di BEI salah satunya adalah manufaktur. Kontribusi sektor manufaktur dalam Produk Domestik Bruto (PDB) tercatat yang paling besar dibandingkan sektor lainnya. Di dalam penelitian ini, perusahaan manufaktur yang akan dijadikan objek penelitian untuk diramalkan harga sahamnya yaitu perusahaan manufaktur yang terdaftar di LQ45.  Pada perdagangan saham, harga mengalami fluktuasi naik maupun turun.  Keadaan saham yang fluktuasi setiap hari menjadikan investor yang akan berinvestasi di industri Manufaktur harus mengamati dan mempelajari data perusahaan dimasa lalu sebelum melakukan investasi. Data tersebut penting bagi investor untuk mengetahui kemungkinan yang terjadi pada harga saham suatu perusahaan. sehingga, meramal harga saham pada industri manufaktur untuk masa yang akan datang sangat dibutuhkan sebagai tahapan dalam memutuskan perusahaan Manufaktur yang baik dalam melakukan investasi. Metode Prediksi dalam penelitian ini menggunakan ARIMA. Hasil yang didapat yaitu harga saham perusahaan GGRM, HMSP, ICBP, INDF, INTP dan UNVR mengikuti tren turun, sehingga langkah yang diambil untuk investor pada perusahaan tersebut adalah menjualnya sedangkan untuk harga saham perusahaan ASII, CPIN, INKP, JPFA, SMGR, TKIM, mengikuti tren naik, sehingga langkah yang diambil untuk investor pada perusahaan tersebut adalah membeli saham.Kata Kunci: Prediksi, ARIMA, Investasi

Growth and Crystal Structure of Alq3 Single Crystals. A new structure showing π–π and CH-π interactions.

2004 ◽  
Vol 829 ◽  
Author(s):  
Ali N. Rashid ◽  
Donald C. Craig
Keyword(s):  
Crystal Structure ◽  
Thin Films ◽  
Solid State ◽  
Single Crystals ◽  
Metal Chelate ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
The Past ◽  
Organic Light ◽  
Available Information

Tris-(8-hydroxyquinoline) aluminum III (Alq3) is a stable metal chelate that has received a great deal of attention over the past years due to its use in the fabrication of organic light emitting diodes (OLED).[1,2] Despite all the interest in this remarkable material very little information on its' solid-state properties and packing exists. Nearly all of the available information comes from studies that have been carried out on vacuum deposited thin films.[1]

The Greek portable sundial from Memphis rediscovered

2021 ◽  
Vol 52 (3) ◽  
pp. 311-324
Author(s):  
Sergei J. Maslikov
Keyword(s):  
Roman Empire ◽  
The State ◽  
The Other ◽  
Recent Book ◽  
Small Class ◽  
The Past ◽  
Available Information

Experts studying antique astronomic instruments are well aware of a small class of so-called portable sundials from the Roman Empire. Over the past few decades, they have been considered in several important publications, including a recent book by Richard J. A. Talbert, in which he systematized the available information. Talbert and earlier J. V. Field described eight portable sundials of a “geographical” type, dating from about 2nd–4th centuries. Five are inscribed in Greek, the other three in Latin. The list of Greek dials also contains a dial from Memphis, information about which has been very scarce so far. Some authors even considered it lost. Fortunately, this instrument is stored in the collection of the State Hermitage Museum (St. Petersburg) and now we have an opportunity to study it more closely.

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