scholarly journals Carst Marble on Tyrnyauz Deposit

2019 ◽  
Vol 8 (6S2) ◽  
pp. 1103-1106
Keyword(s):  
Drainage System ◽  
Chemical Activity ◽  
Karst Area ◽  
Karst Formation ◽  
Main Factors

The karst of marbles is considered as the least studied type of karst. Here we have pinpointed the karst area of the ore field of the Tyrnyauz deposit. Lithological and petrographic characteristics of the skarned marbles of Tyrnyauz are given, their chemical activity is determined. Tectonogenic fissure-karst drainage system of the deposit is analyzed. The main factors of karst formation have been determined and the development of the karst marbles of the Tyrnyauz ore field at various depths is predicted.

scholarly journals Flood history in the karst environment of Castellana-Grotte (Apulia, southern Italy)

2003 ◽  
Vol 3 (6) ◽  
pp. 593-604 ◽  
Author(s):  
M. Parise
Keyword(s):  
Rock Mass ◽  
Complex Network ◽  
Critical Analysis ◽  
Southern Italy ◽  
Karst Area ◽  
Flood Events ◽  
Karst Environment ◽  
Main Factors ◽  
The Town

Abstract. Karst environments are characterized by peculiar hydrologic features, and in particular by a very limited, if not absent, surface hydrography. Water tends to infiltrate rapidly underground through the complex network of fractures and karstic conduits in the rock mass. However, on the occasion of concentrated rainfall, as well as in case of prolonged precipitation, such network might not be able to allow flowing of large amounts of water, which causes the occurrence of floods. This contribution illustrates the flood history in a classical karst area of Southern Italy, the town of Castellana-Grotte, in Apulia. The oldest part of the town lies at the bottom of a karst valley, which was hit by many flood events in the last centuries. More than twenty of these are here documented, starting from critical analysis of existing publications and documents, integrated with additional historical researches. Aimed at reconstructing the flood history at Castellana-Grotte, the best-documented events are described, together with the main factors, which played a role in distribution and gravity of the related damage. Eventually some engineering works realized during the first decades of the last century, in order to avoid further damage on the occasion of catastrophic floods, are also described.

scholarly journals Crystallization law of karst water in tunnel drainage system based on DBL theory

Open Physics ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 241-255
Author(s):  
YongDong Wang ◽  
Yang Liu ◽  
ChuFan Qi ◽  
TianYue Zhou ◽  
Ming Ye ◽  
...  
Keyword(s):  
Flow Rate ◽  
Pipe Wall ◽  
Functional Model ◽  
Drainage System ◽  
Crystallization Rate ◽  
Normal Operation ◽  
Karst Area ◽  
Karst Water ◽  
Flow State ◽  
Drainage Pipe

Abstract When a tunnel is constructed in a karst area, crystallization of the drainage pipe caused by karst water often threatens the normal operation of the tunnel. This work contributes to this field of research by proposing a functional model based on the diffusion boundary layer (DBL) theory proposed by Dreybrodt in the 1990s. The model is formed by determining the flow rate distribution of the drainage pipe in a laminar flow state and turbulent state, and then by applying Fick’s diffusion law and Skelland’s approximate formula. Then, to further verify the applicability of the functional model, a model test was carried out in the laboratory and the test results are compared to the theoretical results. The results show that the crystallization rate of karst water is mainly affected by the roughness of the pipe wall, followed by the slope of pipes. The slope can affect flow state by controlling the flow rate, which in turn affects the crystallization rate of karst water. When the slope of the drainage pipe is 3, 4, and 5%, the error between the experimental results and the theoretical calculation results is 24.7, 8.07, and 27.9%, respectively, and when the liquid level in the pipe is 7.2, 10.2, and 13.3 mm, the error is 27.9, 9.82, and 2.07%, respectively. Considering that the flow will take away the crystalline deposits on the pipe wall in the experiment, although some results have certain errors, they do not affect the overall regularity.

scholarly journals AUDIT KESELAMATAN JALAN TOL KUNCIRAN-SERPONG

2020 ◽  
Vol 3 (3) ◽  
pp. 639
Author(s):  
Liana Fentani Natalia ◽  
Ni Luh Putu Shinta Eka Setyarini
Keyword(s):  
Direct Observation ◽  
Road Safety ◽  
Traffic Accidents ◽  
Drainage System ◽  
Toll Roads ◽  
Traffic Jam ◽  
The Road ◽  
Toll Road ◽  
Main Factors ◽  
Road Safety Audit

The imbalance population and number of vehicles increasing from year to year with number of roads causing traffic jam. Build toll road is the government's effort to solve traffic jam. The construction of toll roads that carried out by Government is expected to be able reduce traffic jam on arterial roads but in reality does not reduce traffic jam even though traffic jam still exist on toll roads. Traffic jam causes stress and fatigue and can lead to traffic accidents. Indonesia has a much higher mortality rate compared to other countries. Traffic accidents are influenced by three main factors: human factors, vehicle factors, and road factors. To improve road safety and high number of deaths each year, it will carried out research by direct observation using the Road Safety Audit (RSA) form of the Kunciran-Serpong Toll Road. The result of this research by direct observation on Kunciran-Serpong Toll Road in general there are still many shortcomings, such as various types of road damage and pavement, there are no signs to bend to the left or right, the drainage system is not good on several roads, and the median is not good because not all segments get fenced.ABSTRAKKetidakseimbangan antara jumlah penduduk dan jumlah kendaraan yang dari tahun ke tahun semakin bertambah dengan ruas jalan yang ada hal tersebut menyebabkan kemacetan lalu lintas. Dengan membangun jalan tol adalah upaya pemerintah dalam menangani kemacetan. Pembangunan jalan tol yang dilakukan oleh Pemerintah diharapkan untuk mampu  mengurangi kemacetan yang terdapat di jalan arteri namun pada kenyataannya tidak mengurangi kemacetan bahkan jalan tol sekalipun mengalami kemacetan. Kemacetan menyebabkan stres dan lelah fisik dan pada akhirnya dapat mengakibatkan kecelakaan lalu lintas. Indonesia memiliki tingkat kematian yang jauh lebih tinggi dibandingkan dengan negara lainnya. Kecelakaan lalu lintas dipengaruhi tiga faktor utama yaitu faktor manusia, faktor kendaraan, dan faktor jalan.  Dalam rangka upaya penyelamatan jalan dan banyaknya angka kematian setiap tahunnya dilakukanlah penelitian metode observasi langung dengan mengunakan formulir Audit Keselamatan Jalan (AKR) atau Road Safety Audit (RSA) pada ruas jalan Tol Kunciran-Serpong. Hasil penelitian metode observasi langung pada jalan Tol Kunciran-Serpong secara umum masih terdapat banyak kekurangan, seperti berbagau jenis kerusakan jalan dan perkerasan, tidak ada rambu peringatan tikungan ke kiri maupun ke kanan, sistem drainase yang kurang baik pada beberapa ruas jalan, dan median yang kurang baik karena tidak semua ruas mendapatkan pemagaran.

scholarly journals AUDIT KESELAMATAN JALAN UNTUK JALAN TOL YANG OPERASIONAL DI BAWAH 1 TAHUN

2021 ◽  
Vol 5 (2) ◽  
pp. 391
Author(s):  
Ni Luh Shinta Putu Eka Setyarini ◽  
Aniek Prihatiningsih ◽  
Liana Fentani Natalia Sianturi ◽  
Stephen Deprianto Gea
Keyword(s):  
Direct Observation ◽  
Road Safety ◽  
Traffic Accidents ◽  
Drainage System ◽  
Toll Roads ◽  
Traffic Jam ◽  
The Road ◽  
Toll Road ◽  
Main Factors ◽  
Road Safety Audit

The imbalance population and number of vehicles increasing from year to year with number of roads causing traffic jam. Build toll road is the government's effort to solve traffic jam. The construction of toll roads that carried out by Government is expected to be able reduce traffic jam on arterial roads but in reality, does not reduce traffic jam even though traffic jam still exist on toll roads. Traffic jam causes stress and fatigue and can lead to traffic accidents. Indonesia has a much higher mortality rate compared to other countries. Traffic accidents are influenced by three main factors: human factors, vehicle factors, and road factors. To improve road safety and high number of deaths each year, it will be carried out research by direct observation using the Road Safety Audit (RSA) form of the Kunciran-Serpong Toll Road. The result of this research by direct observation on Kunciran-Serpong Toll Road in general there are still many shortcomings, such as various types of road damage and pavement, there are no signs to bend to the left or right, the drainage system is not good on several roads, and the median is not good because not all segments get fenced. Keywords: Traffic Jam; Accident, Toll; Road Safety AuditAbstrakSeiring dengan pertambahan jumlah penduduk maka jumlah kendaraanpun terus berkembang dari tahun ke tahun, sedangkan panjang ruas jalan tidak dapat menyusul secara signifikan, hal ini mengakibatkan terjadinya kemacetan lalu lintas. Upaya pemerintah mengurangi kemacetan dengan membangun jalan Tol yang diharapkan untuk mampu mengurangi kemacetan yang ada di jalan arteri. namun pada kenyataannya tidak mengurangi kemacetan bahkan jalan tol saat ini juga mengalami kemacetan. Beberapa jalan tol dibangun untuk mengurangi kemacetan yang ada di ruas jalan tol yang lama, karena apabila tidak dikurangi maka kemacetan menyebabkan stres dan lelah fisik, mengurangi produktifitas yang akhirnya mengakibatkan kecelakaan lalu lintas. Indonesia memiliki tingkat kematian yang jauh lebih tinggi dibandingkan dengan negara lainnya di ASEAN. Kecelakaan lalu lintas dipengaruhi tiga faktor utama yaitu faktor manusia, faktor kendaraan, dan faktor jalan. Dalam rangka upaya meningkatkan keselamatan jalan dan mengurangi angka kematian setiap tahunnya maka dilaksanakan observasi langung dengan mengunakan formulir Audit Keselamatan Jalan (AKJ) atau Road Safety Audit (RSA) pada ruas jalan tol operasional. Hasil dari observasi langung pada ruas jalan tol operasional di bawah 1 tahun secara umum masih terdapat banyak kekurangannya, seperti berbagai jenis kerusakan jalan terutama pada perkerasan, tidak adanya rambu peringatan tikungan ke kiri maupun ke kanan dan beberapa rambu lainnya, kecepatan eksisting yang lebih besar dari kecepatan rencana, dan median yang kurang baik karena tidak semua ruas terdapat pembatas

Stereological Analyses of Hepatocyte Ultrastructure Monitor Arsenic Liver Burdens

1980 ◽  
Vol 38 ◽  
pp. 442-443
Author(s):  
E. M. B. Sorensen ◽  
R. R. Mitchell ◽  
L. L. Graham
Keyword(s):  
Drainage System ◽  
Water Levels ◽  
Ultrastructural Changes ◽  
Hepatocyte Ultrastructure ◽  
Lepomis Cyanellus ◽  
Large Numbers ◽  
Activation Data ◽  
Water Analyses ◽  
Municipal Lake ◽  
Green Sunfish

Endemic freshwater teleosts were collected from a portion of the Navosota River drainage system which had been inadvertently contaminated with arsenic wastes from a firm manufacturing arsenical pesticides and herbicides. At the time of collection these fish were exposed to a concentration of 13.6 ppm arsenic in the water; levels ranged from 1.0 to 20.0 ppm during the four-month period prior. Scale annuli counts and prior water analyses indicated that these fish had been exposed for a lifetime. Neutron activation data showed that Lepomis cyanellus (green sunfish) had accumulated from 6.1 to 64.2 ppm arsenic in the liver, which is the major detoxification organ in arsenic poisoning. Examination of livers for ultrastructural changes revealed the presence of electron dense bodies and large numbers of autophagic vacuoles (AV) and necrotic bodies (NB) (1), as previously observed in this same species following laboratory exposures to sodium arsenate (2). In addition, abnormal lysosomes (AL), necrotic areas (NA), proliferated rough endoplasmic reticulum (RER), and fibrous bodies (FB) were observed. In order to assess whether the extent of these cellular changes was related to the concentration of arsenic in the liver, stereological measurements of the volume and surface densities of changes were compared with levels of arsenic in the livers of fish from both Municipal Lake and an area known to contain no detectable level of arsenic.

BIM-Based Automated Drainage System Design in Prefabrication Construction

2020 ◽  
Author(s):  
Nan Zhang ◽  
Yichen Tian ◽  
Jingwen Wang ◽  
Mohamed Al-Hussein
Keyword(s):  
System Design ◽  
Drainage System

The world and Russia: Inflation is minimal, economic growth is slowing, risks are rising

2019 ◽  
pp. 5-23 ◽  
Author(s):  
Mikhail V. Ershov ◽  
Anna S. Tanasova
Keyword(s):  
Economic Growth ◽  
Financial Markets ◽  
World Economy ◽  
Domestic Demand ◽  
New Combination ◽  
Russian Economy ◽  
The World ◽  
World Economic ◽  
Money Creation ◽  
Main Factors

Russian economy has reached the low level of inflation, but economic growth has not accelerated. Moreover, according to official forecasts, in the following years it will still be low. The article concludes that domestic demand, which is one of the main factors of growth, is significantly constrained by monetary, budgetary and fiscal spheres. The situation in the Russian economy is still hampered by the decline of the world economic growth. The prospects of financial markets are highly uncertain. This increases the possibility of crisis in the world. Leading countries widely use non-traditional measures to support their economies in the similar environment. In the world economy as well as in Russia a principally new combination of factors has emerged, which create specific features of economic growth. It requires special set of measures to stimulate such growth. The article proves that Russian regulators have large unused potential to stimulate growth. It includes monetization, long-money creation, budget and tax stimuli. It is important that the instruments, which will be used, should be based on domestic mechanisms. This will strengthen financial basis of the economy and may encourage economic growth. Some specific suggestions as to their use are made.

Penentuan Metode Intensitas Hujan Berdasarkan Karakteristik Hujan dari Stasiun Pengamat Hujan Disekitar Kecamatan Karawang Timur

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Melisa Permatasari ◽  
M. Candra Nugraha ◽  
Etih Hartati
Keyword(s):  
Drainage System ◽  
Daily Rainfall ◽  
Intensity Analysis ◽  
Rain Intensity ◽  
Rainy Period ◽  
Discharge Plan ◽  
Calculation Results ◽  
Value Determination ◽  
Maximum Daily Rainfall ◽  
Method Approach

<p>The rain intensity is the high rainfall in unit of time. The length of rain will be reversed by the amount rain intensity. The shorter time the rain lasts, the greater of the intensity and re-period of its rain. The value of rain intensity is required to calculate the flood discharge plan on the drainage system planning area in East Karawang district. Determining the value rain intensity is required the maximum daily rainfall data obtained from the main observer stations in the Plawad station planning area. The method of determination rain intensity analysis can be done with three methods: Van Breen, Bell Tanimoto and Hasper der Weduwen. Selected method is based on the smallest deviation value. Determination deviation value is determined by comparing rain intensity value of Van Breen method, Bell Tanimoto, Hasper der Weduwen. By comparing rain intensity value of the Van Breen method, Bell Tanimoto, Hasper der Weduwen with the results of calculating three methods through the method approach Talbot, Sherman and Ishiguro. Calculation results show that the method of rain has smallest deviation standard is method Van Breen with Talbot approach for rainy period (PUH) 2, 5, 10, 25, 50 and 100 years.</p>

Anti-Jewish Incidents in the Lublin Region in the Early Years after World War II

2008 ◽  
pp. 177-205
Author(s):  
Adam Kopciowski
Keyword(s):  
World War Ii ◽  
Jewish Population ◽  
Jewish Life ◽  
Early Years ◽  
World War ◽  
Political Condition ◽  
Ritual Murder ◽  
Main Factors ◽  
Post War ◽  
Anti Jewish

In the early years following World War II, the Lublin region was one of the most important centres of Jewish life. At the same time, during 1944-1946 it was the scene of anti-Jewish incidents: from anti-Semitic propaganda, accusation of ritual murder, economic boycott, to cases of individual or collective murder. The wave of anti-Jewish that lasted until autumn of 1946 resulted in a lengthy and, no doubt incomplete, list of 118 murdered Jews. Escalating anti-Jewish violence in the immediate post-war years was one of the main factors, albeit not the only one, to affect the demography (mass emigration) and the socio-political condition of the Jewish population in the Lublin region

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