scholarly journals PENELITIAN TIMAH PLASER MELALUI ANALISIS SAYATAN OLES DAN GEOKIMIA : STUDI KASUS PERAIRAN TELUK PINANG, PROVINSI RIAU

2016 ◽  
Vol 8 (2) ◽  
pp. 67
Author(s):  
Yudi Darlan ◽  
Udaya Kamiludin

Kebutuhan pasar dunia akan timah meningkat, sehingga pencarian sumberdaya timah banyak dilakukan, termasuk kawasan perairan Riau, Bangka dan Belitung. Bijih timah dalam mineral kasiterit mempunyai Berat Jenis tinggi, sehingga endapan timah alluvium akan tersebar di sekitar sumber asal timah. Analisis geokimia merupakan salah satu metoda yang digunakan untuk menjawab apakah timah dan logam lainnya dalam bentuk unsur berpotensi sebagai sumber daya. Kandungan unsur logam timah yang terdapat pada sedimen permukaan di sekitar aliran dan muara sungai kurang dari 10ppm lebih kecil dibandingkan dengan kandungan unsur logam timah yang ada pada sedimen permukaan dasar laut (20ppm – 80ppm). Kata kunci: timah plaser, analisis sayatan oles dan geokimia, sedimen permukaan, Teluk Pinang, Provinsi Riau The demand of world trades for tin is high, hence explorations for resources of tin in the world, for example Riau, Bangka, and Blitung of Indonesia waters have been carried out. Tin ores of cassiterite has high density, therefore alluvial tin deposits will distributes near their resources. Geochemical analyses is one of the methods which is applied to explain that are tin and heavy metals deposits are prospect at the study area. This is as a main aim of research at Teluk Pinang waters and adjacent areas. The content of tin metal element contained in surface sediments in the river streams and rmouth less than 10ppm is smaller than the content of tin metal element exist on the seafloor surface sediment (20ppm - 80ppm). Key words: placer tin, smear slides and geochemistry analyses, surfacial sediment, The Pinang Bay, Riau Province

2021 ◽  
Vol 9 (5) ◽  
pp. 473
Author(s):  
Magda M. Abou El-Safa ◽  
Mohamed Gad ◽  
Ebrahem M. Eid ◽  
Ashwaq M. Alnemari ◽  
Mohammed H. Almarshadi ◽  
...  

The present study focuses on the risk assessment of heavy metal contamination in aquatic ecosystems by evaluating the current situation of heavy metals in seven locations (North Amer El Bahry, Amer, Bakr, Ras Gharib, July Water Floud, Ras Shokeir, and El Marageen) along the Suez Gulf coast that are well-known representative sites for petroleum activities in Egypt. One hundred and forty-six samples of surface sediments were carefully collected from twenty-seven profiles in the intertidal and surf zone. The hydrochemical parameters, such as pH and salinity (S‰), were measured during sample collection. The mineralogy study was carried out by an X-ray diffractometer (XRD), and the concentrations of Al, Mn, Fe, Cr, Cu, Co, Zn, Cd, and Pb were determined using inductively coupled plasma mass spectra (ICP-MS). The ecological risks of heavy metals were assessed by applying the contamination factor (CF), enrichment factor (EF), geoaccumulation index (Igeo), pollution load index (PLI), and potential ecological risk index (RI). The mineralogical composition mainly comprised quartz, dolomites, calcite, and feldspars. The average concentrations of the detected heavy metals, in descending order, were Al > Fe > Mn > Cr > Pb > Cu > Zn > Ni > Co > Cd. A non-significant or negative relationship between the heavy metal concentration in the samples and their textural grain size characteristics was observed. The coastal surface sediment samples of the Suez Gulf contained lower concentrations of heavy metals than those published for other regions in the world with petroleum activities, except for Al, Mn, and Cr. The results for the CF, EF, and Igeo showed that Cd and Pb have severe enrichment in surface sediment and are derived from anthropogenic sources, while Al, Mn, Fe, Cr, Co, Ni, Cu, and Zn originate from natural sources. By comparison, the PLI and RI results indicate that the North Amer El Bahry and July Water Floud are considered polluted areas due to their petroleum activities. The continuous monitoring and assessment of pollutants in the Suez Gulf will aid in the protection of the environment and the sustainability of resources.


Author(s):  
Mohammad Mehdi Taghizadeh

Being on the steep slope of Shiraz city and getting the main drainages, Maharlu Lake is always home to extensive levels of urban pollution. Prolonged droughts and drying of surface sediments of the lake happen usually in warm seasons of the year, and with the continuation of the droughts particles spread out from the surface into the surroundings of the lake. Arsenic and its compound are well known for its toxicity and carcinogenicity. Industrial and farming waste in upstream of the lake are the main sources of arsenic and may disperse in Maharlu Lake.   In this study, by meshing the lake’s surface and by sampling 15 points 3 kilometers away there determined the Arsenic amount. Then, the toxicity indexes and Mueller index together with its risks were studied before zoning of the lake through GIS and verification. The results showed that the average concentration of arsenic was 3.5 mg/ kg of surface sediment. The concentration has gone in most parts of the lake below normal as shown by Mueller index so that its contamination and lower-than-usual toxicity is deemed anthropogenic. Interpolations by GPI, LPI, and IDW methods demonstrated the north part of the lake more concentrated, likely due to the north lake farming and being the entrance of River Soltanabad. The verification of data has recognized the IDW method as the most accurate as regards interpolation.   According to the importance of heavy metals in the dust, samples should be taken from winds coming from the lakeside as dust hotspot to control the metals concentration.


Author(s):  
Nina Bosak

The demonolexis in Yu. Andrukhovych’s long short story “Recreatsii” (“Recreations”) has been analyzed in the article. In the course of the research there have been outlined the following lexical-semantic groups of demonomens: toponymic and onomastic names, modified lexemes, names of the rituals, genuine Ukrainian demonomens, obscene words and expressions, demonomens of Biblical origin, names from the world mythology and general demonolexis. The special lexical-semantic group has been formed by non personificated demonomens, which serve to convey the peculiarities of the contemporary Ukrainian writers’ mentality, their habits through speech. Such nomens help to reveal the protagonist’s soul, show the positive and negative sides of his personal ego, demonstrate the duality of the human perception of the world, indicate the causes of phobias, emotions, sensations. Key words: demonolexis, demonomen, lexical-semantic group, non personificated demonomen.


PERENNIAL ◽  
2010 ◽  
Vol 6 (1) ◽  
pp. 33
Author(s):  
Astuti Arif ◽  
. Syahidah ◽  
Sitti Nuraeni

Fungi have a great diversity and wide distribution at the world. It can be used as the alternative technology for controlling of subterranean termite attack, particularly genus Coptotermes knowned as the wooden destructive organism, by using entomophatogenic fungi. For the purpose of the study, several isolate sources were taken from some locations. The results show that eight numbers of pathogenic fungi was founded by screening and identification of fungi taken from 19 numbers of isolate sources. The pathogenic fungi were Beauveria sp., Penicillium brevicompactum, P. rubrum, Paecilomyces fulvus, Fusarium verticolloides, Pythium sp., and Aspergillus sp. Key words: Jamur entomopatogen, Coptotermes sp.


2017 ◽  
Vol 7 (1) ◽  
pp. 40
Author(s):  
Elvira Lumi ◽  
Lediona Lumi

"Utterance universalism" as a phrase is unclear, but it is enough to include the term "prophetism". As a metaphysical concept, it refers to a text written with inspiration which confirms visions of a "divine inspiration", "poetic" - "legal", that contains trace, revelation or interpretation of the origin of the creation of the world and life on earth but it warns and prospects their future in the form of a projection, literary paradigm, religious doctrine and law. Prophetic texts reformulate "toll-telling" with messages, ideas, which put forth (lat. "Utters Forth" gr. "Forthteller") hidden facts from fiction and imagination. Prometheus, gr. Prometheus (/ prəmiθprə-mee-mo means "forethought") is a Titan in Greek mythology, best known as the deity in Greek mythology who was the creator of humanity and charity of its largest, who stole fire from the mount Olympus and gave it to the mankind. Prophetic texts derive from a range of artifacts and prophetic elements, as the creative magic or the miracle of literary texts, symbolism, musicality, rhythm, images, poetic rhetoric, valence of meaning of the text, code of poetic diction that refers to either a singer in a trance or a person inspired in delirium, who believes he is sent by his God with a message to tell about events and figures that have existed, or the imaginary ancient and modern world. Text Prophetism is a combination of artifacts and platonic idealism. Key words: text Prophetism, holy text, poetic text, law text, vision, image, figure


2020 ◽  
pp. 49-81
Author(s):  
Bruno Van der Maat

The current pandemic has seen some adverse reactions from the most diverse religious groups all over the world to government regulations. After having described some of their manifestations, this contribution analyzes what the Bible and some post biblical (patristic and Talmudic) traditions say about illness and pandemics. As it is ascertained that these sources contain very limited material on these subjects, the third part of this article proposes some ethical reflections regarding the official response to the pandemic as well as some pastoral implications. Key Words: Pandemic, Religion, Bible, Talmud, Pastoral Care.


2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Alwi Musa Muzaiyin

Trade is a form of business that is run by many people around the world, ranging from trading various kinds of daily necessities or primary needs, to selling the need for luxury goods for human satisfaction. For that, to overcome the many needs of life, they try to outsmart them buy products that are useful, economical and efficient. One of the markets they aim at is the second-hand market or the so-called trashy market. As for a trader at a trashy market, they aim to sell in the used goods market with a variety of reasons. These reasons include; first, because it is indeed to fulfill their needs. Second, the capital needed to trade at trashy markets is much smaller than opening a business where the products come from new goods. Third, used goods are easily available and easily sold to buyer. Here the researcher will discuss the behavior of Muslim traders in a review of Islamic business ethics (the case in the Jagalan Kediri Trashy Market). Kediri Jagalan Trashy Market is central to the sale of used goods in the city of Kediri. Where every day there are more than 300 used merchants who trade in the market. The focus of this research is how the behavior of Muslim traders in the Jagalan Kediri Trashy Market in general. Then, from the large number of traders, of course not all traders have behavior in accordance with Islamic business ethics, as well as traders who are in accordance with the rules of Islamic business ethics. This study aims to determine how the behavior of Muslim traders in the Jagalan Kediri Trashy Market in buying and selling transactions and to find out how the behavior of Muslim traders in the Jagalan Kediri Trashy Market in reviewing Islamic business ethics. Key Words: Trade, loak market, Islamic business


2016 ◽  
pp. 33-38
Author(s):  
Thi Ngoc Dung Thai ◽  
Thi Tan Nguyen

Background: Low back pain by osteoarthristis is one of the most common diseases in the world as well as in Vietnam, estimated 70-85% people in the world have low back pain sometime in their lives. Obiectives: To evaluate the effects of embedding therapy and electronic acupuncture combined with “Doc hoat tang ky sinh” remedy in the treatment of low back pain by spondylosis. Materials and methods: 72 patients diagnosed of low back pain by spondylosis, were examined and treated at Phu Yen Traditional Medicine Hospital, divided equally into 2 groups (group 1 and group 2). Results: In group 1: Effective treatment at good and fair good level accounted for 41.7% and 41.7%. In group 2: Good level occupied 33.3% and fair good level occupied 55.6%. Conclusion: The ratios of good and fair good in 2 groups were equal (p >0.05) Key words: Low back pain, spondylosis, embedding therapy, electronic acupuncture


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